JPH05199621A - Train operation control command transmitter and receiver - Google Patents

Abstract

(57) [Abstract] [Object] The present invention ensures the reliability of a control command by invalidating the operation control command output when a failure of a modulation circuit that modulates a serial transmission signal converted from the operation control command is detected. It is a thing. [Structure] The original serial transmission signal obtained by demodulating the modulated serial transmission signal output from the modulation circuit 3 by the demodulation circuit 9 is used as the transmission data of the other system circuit and the second serial transmission / reception means 23 of the own system circuit. To the second series transmission transmitting means 22 of its own circuit and the second data comparing means 24 determines whether the data coincides or does not coincide with each other. By turning off 7 and the operation control command, an erroneous operation control command due to a failure of the modulation circuit 3 is stopped. At the same time, the transmitter failure is output by the second relay contact 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train operation control command transmitter having a function of transmitting a train operation control command from a driver's cab to a propulsion control device mounted on each car by a serial transmission signal and its signal. The present invention relates to a train operation control command receiver for receiving.

[0002]

2. Description of the Related Art FIG. 10 is a block diagram showing the configuration of a train operation control command transmitter shown on page 396 of "25th National Symposium on Cybernetics in Railways". In the figure, 11 and 21 are first and second input means for operation control commands, and 12 and 22 are first.
And second serial transmission / transmission means, 13 and 23 are first and second serial transmission / reception means, 14 and 24 are first and second data comparison means for comparing transmission data and reception data, and 3 is A modulation circuit that modulates a serial transmission signal, 4 is an excitation signal output circuit that outputs the presence or absence of signal excitation by AND logic, 5 is an AC amplifier that amplifies the excitation signal, and 6 is a transmission effective relay coil that is excited by the output of the AC amplifier , 7 are relay contacts driven by the transmission effective relay coil 6.

1 is called a 1-system circuit and 2 is called a 2-system circuit. Both circuits 1 and 2 are circuits having the same function, and are equipped with a microcomputer to realize the functions, and are therefore called a dual CPU system.

Next, the operation will be described. FIG. 11 is a signal waveform diagram for explaining the operation. Forward / reverse, powering,
A train operation control command such as a brake is generated from a mass-con handle, a brake handle, or an automatic driving device operated by a driver in a train driver's cab.
Parallel signals by pressure / no pressure in such example DC100V as shown in, S _1, S ₂ ..., as S _N, is input to the first and second input means 11, 21.

The train operation control mode is determined by the combination of pressurization / non-pressurization of DC100V of this parallel signal. Then, these parallel signals (that is, the operation control command signals) are converted into voltage levels that can be handled by the microcomputer circuit by the first and second input means 11 and 21, and the first and second serial transmission transmission means 12 are provided. , 22 respectively.

First and second serial transmission transmission means 12,
22 creates transmission data to be sent to the propulsion control device mounted on each vehicle based on the input parallel signal. As shown in FIG. 11B, the input operation control command signal D
A serial transmission signal corresponding to "1" for a C100V command and "0" for a 0V command is converted and output, and the first and second data comparison means 1 are provided.
The transmission data is given to 4, 24. The serial transmission signal output from the 1-system circuit 1 is the second serial transmission receiving means 2 of the 2-system circuit 2.
3 and is converted into a signal resistant to noise, for example, a frequency-modulated signal as shown in FIG. 11C via the modulation circuit 3. In this case, is converted into a signal of a frequency of 30.72KH _Z for the case of 20.48KH _Z, "0" for the case of the serial transmission signal is "1". On the other hand, the serial transmission signal output from the second system circuit 2 is given to the first serial transmission receiving means 13 of the first system circuit 1. The first and second serial transmission receiving means 13 and 23 create reception data from the received serial transmission signals and apply the reception data to the first and second data comparing means 14 and 24, respectively.

First and second data comparing means 14, 2
Reference numeral 4 compares the transmission data of the own system circuit with the reception data received by the other system. Since the functions of the 1st system and the 2nd system are the same, the contents of the transmission data and the contents of the reception data match when normal.

If they match, an excitation signal (an AC signal that changes voltage / current at a constant cycle, for example, a square wave) is output as a signal indicating normality, and if they do not match, excitation is performed as a signal indicating an abnormality. Stop (use DC signal without voltage / current change). The excitation signal output circuit 4 performs an AND logic output of the excitation signal (1) of the first system circuit 1 and the excitation signal (2) of the second system circuit 2. That is, the output is excited only when both signals are excited.

Excitation signal from the excitation signal output circuit 4 (3)
Is amplified by the AC amplifier 5 or is rectified after amplification and excites the transmission effective relay coil 6. Since the AC amplifier 5 amplifies only the AC component, when the excitation of the input signal is stopped, the output current disappears and the transmission effective relay coil 6 is demagnetized.

The excited transmission effective relay coil 6 drives the relay contact 7 to turn it on. When the relay contact 7 is on, the modulated serial transmission signal is output to the control command transmission line that runs through the train and given to the propulsion control device mounted on each vehicle.

With such a circuit, at least one of the excitation outputs stops even if one of the circuits of the first and second systems fails, and the relay contact 7 is turned off to send an erroneous control command to the train. It is possible to maintain the fail-safe property that prevents the transmission (continuation of transmission).

Consider, for example, a case where a failure occurs in the first input means 11 of the 1-system circuit 1. At this time, since an erroneous signal is given to the first serial transmission / transmission means 12 of the first system, the data content of the serial transmission signal output from the first system circuit 1 becomes incorrect, and the second system circuit 2 outputs it. A difference occurs with the data content of the second serial transmission signal.

This is detected by the first and second data comparing means 14 and 24 of both the first and second systems as a mismatch between the transmission data and the reception data, so that the excitation signal is stopped and the excitation signal output circuit 4 operates. The output excitation stops, the output power of the AC amplifier 5 disappears, and the transmission effective relay coil 6
Is demagnetized and the relay contact 7 is turned off.

This prevents an erroneous serial transmission signal from being continuously transmitted into the train via the modulation circuit 3.

As described above, the 1st and 2nd circuits always receive the transmission data of the own system and the reception data from the other system (that is, the restored transmission data of the other system) provided from the serial transmission receiving means 13 and 23. Therefore, as long as the comparison result is in agreement and the excitation signal is output, the validity of the data content of the serial transmission signal has been confirmed by another system.

The first and second data comparison means 1
The reason why the excitation signal is used for the outputs of 4 and 24 is that the failure mode of the excitation circuit is generally a stop of excitation and a fail-safe. In addition, a contact relay (a relay with a mechanical contact) is used because the failure mode of the contact relay is the off side (when there is sufficient margin for the electrical rating of the contact) and is fail-safe. It is because

Further, to describe the method of using this device, in an actual train, there are a plurality of cabs, so only the train operation control command transmitter of the first cab in which a driver appears is powered. Put in and use. This is because if a plurality of train operation control command transmitters operate at the same time, the transmission signals collide on the control command transmission line passing through the train, the waveform is disturbed, and transmission becomes impossible.

FIG. 12 is a block diagram showing the configuration of the train operation control command receiver for receiving the modulated serial transmission signal from the train operation control command transmitter described above, which is also described in the above-mentioned document. It should be noted that many parts similar to those of the above-described transmitter are included in the configuration, and corresponding components are denoted by reference numerals with 100 added.

The modulated serial transmission signal is demodulated by the demodulation circuit 103 and converted into a serial transmission signal having a voltage level that can be handled by the microcomputer circuit. The first and second serial transmission / reception means 111, 121 respectively generate first and second reception data from the input serial transmission signals and apply them to the first and second output means 112, 122, respectively. The first and second output means 112, 122 create output data for instructing a propulsion control device mounted on the vehicle based on the received data input, and a first control command signal serving as a control command, respectively. And outputs a second control command signal. The first and second input means 113 and 123 monitor other control command signals, and create input data representing the state.

First and second data comparison means 114,
124 denotes first and second output means 112, respectively.
The output data given by 122 and the input data given by the first and second input means 113, 123 are compared. Since the 1-system and 2-system have the same function, the contents of the output data and the input data are the same in the normal state.

If they match, an excitation signal indicating normality is output, and if they do not match, an excitation signal is output as an abnormal signal, and the excitation is stopped. The excitation signal output circuit 104 includes both comparison means 11
The outputs are excited only when the output signals (1) and (2) of 4,124 are both excited. The excitation signal (3) from the excitation signal output circuit 104 is amplified and rectified by the AC amplifier 105 to excite the control command valid relay coil 106. When the excitation of the input signal is stopped, the control command valid relay coil 10
6 is demagnetized.

Excited control command valid relay coil 10
6 drives the relay contact 107 to turn it on. When relay contact 107 is on, a control command is given to an external propulsion control device. As described above, as in the case of the transmitter, it is possible to maintain the fail-safe property of preventing the wrong control command from being given to the propulsion control device.

[0023]

Since the conventional train operation control command transmitter is configured as described above, the train operation control command transmitter is started up to start the train operation control command. Until the power is turned on to the command transmitter, it is not known whether there is an abnormality in the train operation control command transmitter.In order to check the operation, it is necessary for an attendant to get on the cab and start up. There was a problem that it could not be distinguished from starting and it was inconvenient to monitor the presence or absence of abnormal trains.

Further, there is also a problem that a staff member must manually switch to the spare train operation control command transmitter when a failure occurs.

Further, even if the train operation control command transmitted from each system circuit 1 and 2 as a serial transmission signal is correct, if the modulation circuit fails, the operation control command is issued in an incorrect signal format. There was a point.

The conventional train operation control command receiver also has the same problem. That is, it is not possible to distinguish between failure and non-startup, and at the time of failure, the clerk must manually switch to the spare train operation control command receiver. There is also a problem that it is difficult to distinguish it from a failure on the transmission side (train operation control command transmitter).

The present invention has been made to solve the above problems, and always monitors the occurrence of a failure of the self-device regardless of whether or not each driver's cab is activated, and immediately reports the occurrence of the failure. The purpose is to obtain a train operation command transmitter and receiver that can.

It is another object of the present invention to obtain a train operation control command transmitter and a receiver that can automatically switch to another spare system device when a failure occurs.

Furthermore, the occurrence of a failure in the modulation circuit is also monitored,
An object of the present invention is to obtain a train operation command transmitter that can stop the train operation control command when a failure occurs.

[0030]

A train operation control command transmitter according to the first aspect of the present invention uses a signal output from the first serial transmission transmission means and modulated by a modulation circuit into a modulated serial transmission signal. A demodulation circuit that demodulates the serial transmission signal is provided, and the demodulation serial transmission signal is received by the serial transmission receiving means as the serial transmission data of the other system circuit, and the serial comparison data is transmitted by the data comparison means together with the serial transmission data transmitted from the own system circuit. Comparison is made to determine whether the data contents match or not. When the data contents do not match, the first relay contact is turned off, the operation control command is cut off, and a failure signal is sent out via the second relay contact.

Further, the train operation control command transmitter according to the second aspect of the present invention compares the determination result by the cab activation determining means in the own system circuit with the determination result by the cab activation determining means in the other system circuit. At the same time, the operation control command in the serial transmission signal form transmitted from the own system circuit through the serial transmission transmission means and the operation control command transmitted in the same signal form from the other system circuit are compared, and the driver's cab start command of the transmission data is compared. Including the coincidence / non-coincidence determination, when the non-coincidence is determined, the first relay contact is turned off, the operation control command is cut off, and a failure signal is sent out via the second relay contact.

Further, the train operation control command transmitter according to the third aspect of the present invention examines the cab start command AND result output from the cab start determining means provided in each system circuit, and the logical product is satisfied. The cab start relay is provided to turn off the cab start command during the operation.

Further, the train operation control command transmitter according to the fourth aspect of the present invention is provided with the transmitters of the normal system and the standby system, and a failure occurs in the normal system transmitter by utilizing the output of the transmission effective relay coil. When this is done, the standby transmitter is automatically switched to.

In the train operation control command receiver according to the fifth aspect of the present invention, means for detecting reception stop of the serial transmission signal is provided in both systems, and when both means do not detect reception stop, output is provided. A control command valid signal is output when both the control command receiving relay to be performed and the first relay contact that outputs when the data of both systems match, and when the data of both systems do not match At this time, the failure signal is sent out via the second relay contact.

Further, the train operation control command receiver according to the sixth aspect of the present invention determines whether the received data including the reception stop detection signal is coincident or non-coincident, and when the discrepancy is judged, the first relay contact is turned off to make the control command effective. Disconnect the signal and send a fault signal through the second relay contact.

Further, in the train operation control command receiver according to the seventh aspect of the present invention, demodulation circuits are provided in both systems, and data comparison including the outputs of each demodulation circuit is performed to perform a failure determination operation.

Further, the train operation control command receiver according to the eighth aspect of the present invention is provided with the receivers of the normal system and the standby system, and the output of the control command effective relay coil is used to detect the failure of the normal system receiver. When it occurs, it is automatically switched to the standby transmitter.

[0038]

According to the first aspect of the invention, the original serial transmission signal obtained by demodulating the modulated serial transmission signal output from the modulation circuit by the demodulation circuit is input as the transmission data of the other system circuit, and the own system is transmitted. By comparing the transmitted data of the circuit and the data transmitted by the comparing means, the operation control command is turned off when the data does not match, so that an erroneous operation control command is not transmitted due to a failure of the circuit including the modulation circuit. ..

Further, according to the second aspect of the present invention, each system circuit is provided with a cab activation determining means for determining activation of the cab, and a cab activation relay is activated by a cab activation command of one system circuit. While driving, in each system circuit, the data comparison means determines whether or not the driver's cab start command and the operation control command in the own system circuit and the other system circuit match, and when the mismatch is determined, the first relay contact is turned off. By doing so, an erroneous operation control command will not be transmitted due to a failure of each unit including the cab activation determination unit.

According to the third aspect of the invention, the AND circuit checks the coincidence of the start commands output from the cab start judging means in each system circuit, and when no coincidence is judged, the cab is judged. By turning off the start relay, it is possible to reliably prevent the wrong start command from being sent.

According to the fourth aspect of the invention, when a failure occurs in the normal system transmitter, the switching means immediately operates to control the modulated serial transmission signal from the standby system transmitter in place of the normal system. Send to command transmission line.

Further, according to the fifth aspect of the invention, the reception stop detecting means is provided to control the ON / OFF of the control command valid signal depending on the presence / absence of the reception signal, and the failure signal is output by operating the output of the data comparing means. Since the second relay contact for outputting is provided, the data mismatch detection outputs of the first system and the second system can be discriminated as a failure signal of the receiver.

According to the sixth aspect of the invention, since the data comparison is performed by including the output signals from the reception stop detecting means of both systems, it is possible to detect the failure of the reception stop detecting means itself. Become.

Further, according to the seventh aspect of the invention, since demodulation circuits are provided in both systems for data comparison, it is possible to detect a failure of the demodulation circuit and the reliability as a receiver is improved. ..

According to the eighth aspect of the present invention, when a failure occurs in the normal system receiver, the switching means immediately operates, and the control command signal from the standby system receiver replaces the normal system. Sent to.

[0046]

EXAMPLES Example 1. Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 11 and 21 are first and second input means for operation control commands, 12 and 22 are first and second serial transmission and transmission means, and 13 and 23 are first and second serial transmission and reception means. , 14 and 24 are first and second data comparing means for comparing the transmitted data and the received data, 3 is a modulation circuit for modulating the serial transmission signal, and 9 is a demodulation circuit for demodulating the modulated serial transmission signal.

Reference numeral 4 is an excitation signal output circuit for outputting the presence or absence of signal excitation by AND logic, 5 is an AC amplifier for amplifying the excitation signal, 6 is a transmission effective relay coil excited by the output of the AC amplifier, and 7 and 8 are transmission. A first relay contact and a second relay contact driven by the effective relay coil 6.

Reference numeral 31 is the third provided for the driver's cab start command.
Is an input means, and its output is given to the cab starting relay 10 as a starting command.

1 is called a 1-system circuit and 2 is called a 2-system circuit. As in the conventional example, the 1-system circuit 1 and the 2-system circuit 2 are circuits having the same function, and each of them is equipped with a microcomputer to realize the function, and is therefore called a dual CPU system.

Next, the operation will be described. A driver boarded and started the driver's cab (specifically, enter the masscon key,
If the train operation control command transmitter is turned on before the operation such as inserting the reverse handle and inserting the brake handle is performed), the 1-system circuit 1 and the 2-system circuit 2 are commonly input. Transmission of transmission data is started based on the operation control command at that time.

When the driver's cab is not activated, the input operation control command is meaningless, but the signals corresponding to the operation control commands such as forward / reverse, power running, and brake are the first and the second signals. Detected by the second input means 11 and 21, converted into a voltage level that can be handled by the microcomputer circuit, as described in the conventional example, and sent to the first and second serial transmission and transmission means 12 and 22, respectively. Given.

First and second serial transmission and transmission means 12,
Reference numeral 22 creates transmission data to be sent to the propulsion control device mounted on each vehicle based on the input signal, converts this to a serial transmission signal and outputs it, and also outputs the first and second data comparison means 14 respectively. , 24 to send data.

The first serial transmission signal output from the 1-system circuit 1 is input into the modulation circuit 3. The modulation circuit 3 converts the first serial transmission signal into a signal resistant to noise (for example, a frequency modulation signal as shown in FIG. 11C). This modulated serial signal is converted into the original first serial transmission signal by the demodulation circuit 9, is given to the second serial transmission receiving means 23 of the second system circuit 2, and is input to the contact of the cab starting relay.

On the other hand, the second serial transmission signal output from the second system circuit 2 is given to the first serial transmission receiving means 13 of the first system circuit 1. The cab start command signal is detected by the third input means 31, and the start command is output to the "on" side when the signal indicates the "start" side and to the "off" side when the signal is the "non-start" side. To do.

The cab start relay 10 that receives this command
Performs an operation of sending a modulated serial transmission signal when the command is "on" side (contact is made) and not sending a modulated serial transmission signal when the command is "off" (cutting contact). Figure 2
FIG. 3 is a diagram showing an example in which the modulation circuit 3 of the present invention is embodied. In the figure, terminal A is an input terminal to which the first serial transmission signal is input. The operation will be briefly described. Input terminal A
The serial transmission signal (“1” or “0” serial signal as shown in FIG. 11B) is 1 / 2.1 / 3
It is sent to the frequency division switching circuit 33. 1/2 1/3 division switching circuit 33, serial transmission signal is divided by 2 a clock signal 1.2288MH _Z when it is "1".

Then, the signal divided into 1/2 or 1/3 is further divided into 1/20 by the 1/20 divider 34.
Is divided into. That is, the signal frequency 20.48KH _Z of serial transmission signal is "1," the signal of the serial transmission signal is "0" becomes frequency 30.72KH _Z, serial transmission signal FIG 11 (c) Is converted into a frequency-modulated signal corresponding to "1" or "0".

This signal carries out the operation of outputting the modulated serial transmission signal only when the driver's cab as shown in FIG. 3 (b) is started by passing through the relay contact for activating the driver's cab. Also, the first and second serial transmission receiving means 1
Reference numerals 3 and 23 create reception data from the received serial transmission signals, and apply the reception data to the own data comparison means 14 and 24, respectively.
On the other hand, the first and second data comparison means 14 and 24 respectively compare the transmission data of the own system circuit with the reception data received from the other system. Since the first system and the second system have the same function, the contents of the transmission data and the contents of the reception data match when they are normal.

If they match, an excitation signal (an AC signal that changes the voltage / current at a constant cycle, for example, a square wave) is output as a signal indicating normality, and if they do not match, excitation is performed as a signal indicating abnormality. Stop (use DC signal without voltage / current change).

The excitation signal output circuit 4 performs an AND logic output of the excitation signal of the 1-system circuit 1 and the excitation signal of the 2-system circuit 2.
That is, the output is excited only when both signals are excited.

The excitation signal is amplified by the AC amplifier 5 or is rectified after being amplified to excite the transmission effective relay coil 6. When the excitation of the input signal is stopped, the output power is lost and the transmission effective relay coil 6 is demagnetized. At the same time, the stop of the excitation signal is output to the outside by the second relay contact 8 driven by the transmission valid relay coil 6.

The excited transmission effective relay coil 6 is the first
The relay contact 7 is driven to turn it on. When the first relay contact 7 is on and the driver's cab is activated and the modulated serial transmission signal is being sent, it is output to the control command transmission line that runs through the train, and the propulsion control mounted on each vehicle It is given to the device as a control command.

With such a circuit, at least one of the excitation outputs is stopped and the first relay contact 7 is turned off regardless of the failure of the circuit of the first or second system. It is possible to maintain a fail-safe property that prevents the data from being transmitted (continue transmission).

Whether or not the driver's cab is activated,
By constantly checking the operation of the 1st and 2nd system circuits, the turning off of the second relay contact 8 can be immediately used as a failure and can be used for an alarm or the like.

Next, the necessity of the demodulation circuit 9 will be described. To maintain the fail-safe property, it is sufficient to directly input the first serial transmission signal to the second serial transmission means 23 without using the demodulation circuit as shown in the conventional embodiment (FIG. 10). is there. This is because the modulator circuit itself is, for example, an exciting circuit as shown in FIG. However, in this case, even if the modulation circuit fails and transmission stops, the failure cannot be detected.

In the present invention, the demodulation circuit is provided and the modulated transmission signal is monitored, so that the second data comparison means 24 detects the stop of the transmission due to the failure of the modulation circuit, and the stop of the excitation signal (2). Then, it is output from the second relay contact 8 as a transmitter failure.

Example 2. FIG. 4 shows the configuration of a fault-tolerant train operation control command transmitter that switches to a standby system when a failure occurs by using a relay contact that interlocks with the second relay contact 8 described above.

In FIG. 4, reference numeral 41 denotes a train operation control command transmitter A according to the embodiment of FIG. 1, which is normally used for transmitting the operation control command. Reference numeral 51 denotes a train operation control command transmitter A41, which transmits a similar operation control command to the train operation control command transmitter A41, but is a standby train operation control command transmitter B that stands by in case of failure of the train operation control command transmitter A41. ..

Train operation control command transmitter 4 for A system and B system
Similarly, 1 and 51 are always energized, and output the modulated serial transmission signal when the driver's cab start command is input.

Reference numeral 61 is a switching means having a switching contact driven by the output effective relay 6 incorporated in the train operation control command transmitter A41.
When 41 is on the normal side, it is connected to the side a in the figure, and when it is on the fault side, it is connected to the side b.

With the above configuration, the train operation control command transmitter A of the normal system is always self-checked regardless of whether the driver's cab is activated or not, so that any part of the internal failure (modulation circuit It is possible to realize a fault-tolerant train operation control command transmitter that can be reliably switched to the standby train operation control command transmitter B even in the case of failure (including failure).

Example 3. In the above embodiment, the case where the driver's cab start command is input independently of the driver's cab control command has been described, but it is possible that the driver's cab start command is input to the 1-system circuit and the 2-system circuit at once. An example of this case is shown in FIG.

In this example, the cab activation determining means 15 and 25 for determining the activation of the cab based on the input information are in the 1-system and 2-system circuits, respectively, and the cab activation relay is driven by the 1-system activation command. At the same time, it is input to the data comparison means 24 of the 2 system, and the start command of the 2 system is input to the data comparison means 14 of the 1 system.

When a mismatch is detected in the start command, the excitation signal is stopped and the transmission valid relay coil is demagnetized as in the case of a mismatch in the transmission data. This prevents the transmission command from being erroneously transmitted to the pull-through line in the train due to the failure of the driver's cab activation determining means. Other operations are the same as those of the embodiment shown in FIG. This method can detect an abnormality in the operation of the device as a failure in the case of making a logical judgment using a microcomputer circuit to judge the start of the driver's cab.

Example 4. Another example is shown in FIG. In this example, the 1 and 2 system cab start determination means 1 similar to the third embodiment
The cab start relay is driven by the logical product of the outputs of 5, 25 (AND circuit 40 in the figure). In this case 15,25
However, the probability of erroneously operating the cab starting relay is lowered by the AND circuit.

Although the cab starting relay is shown as a contact relay in each of the above-mentioned embodiments, there is no difference in essence even if a semiconductor relay using a transistor or the like is used, and it is considered that the relay has the same structure.

Further, the contact point of the driver's cab start command relay 10 and the first relay contact point of the transmission valid relay have the same structure regardless of which is inserted before or after on the transmission line.

Example 5. FIG. 7 is a block diagram showing the configuration of a train operation control command receiver according to an embodiment of the present invention. In the figure, 103 is a demodulation circuit for demodulating a modulated serial transmission signal on the control command transmission line, 111 and 121 are first and second serial transmission receiving means, 112 and 122 are first and second output means, 113 and 123 is the first and second
Input means 114 and 124 are first and second data comparison means 11 for comparing output data with input data.
5, 125 are first and second reception stop detecting means for detecting stop of reception, 104 is an excitation signal output circuit for outputting the presence or absence of signal excitation by AND logic, 105 is an AC amplifier for amplifying the excitation signal, 106 Is a control command valid relay coil excited by the output of the AC amplifier, 107 and 108 are first and second relay contacts driven by the control command valid relay coil 106, and 140 is a stop of the first and second reception. AND of both outputs of the detection means 115, 125
The logic circuit 110 is a control command receiving relay. In addition,
Here, as in the case of the transmitter, a dual CPU system including a 1-system circuit 101 and a 2-system circuit 102 is adopted.

Next, the operation will be described. The modulated serial transmission signal sent from the transmitter through the control command transmission line is demodulated by the demodulation circuit 103 and converted into a serial transmission signal having a voltage level that can be handled by the microcomputer circuit. The first and second serial transmission / reception means 111 and 121 generate reception data from the input serial transmission signals to generate first reception data, respectively.
And second output means 112, 122 and first and second
To the reception stop detecting means 115 and 125. The first and second output means 112, 122 create output data for instructing a propulsion control device mounted on the vehicle based on the received data input, and a first control command signal serving as a control command, respectively. And outputs a second control command signal. First
And the second reception stop detecting means 115, 125 monitor the reception state of the data, detect the reception stop and output the reception stop signal when normal data is not received for a certain time or longer. The first and second input means 113 and 123 monitor other control command signals, and create input data representing the state.

First and second data comparison means 114,
124 designates first and second output means 112, respectively.
The output data given by 122 and the input data given by the first and second input means 113, 123 are compared. Since the 1-system and 2-system have the same function, the contents of the output data and the input data are the same when normal.

If they match, an excitation signal indicating normality is output, and if they do not match, an excitation signal is output as an abnormal signal, and excitation is stopped. The excitation signal output circuit 104 includes both comparison means 11
The outputs are excited only when the output signals (1) and (2) of 4,124 are both excited. The excitation signal (3) from the excitation signal output circuit 104 is amplified and rectified by the AC amplifier 105 to excite the control command valid relay coil 106. When the excitation of the input signal is stopped, the control command valid relay coil 10
6 is demagnetized.

The control command valid relay coil 106 drives the first relay contact 107 and the second relay contact 108. The second relay contact 108 outputs to the outside as a failure that the control command valid relay coil 106 is demagnetized. Reception stop signals output from the first system 101 and the second system 102 are input to the AND logic circuit 140,
When both of the systems do not detect the reception stop, the control command reception relay 110 is excited.

The control command valid signal is the control command reception relay 1
It is output when both the conditions that 10 is excited and that the first relay contact 107 is on are satisfied. The control command valid signal notifies the propulsion control device to be controlled that the control command is valid.Use this output to turn on / off the circuit for the control command output from the receiver. Good.

With the circuit configuration as described above,
When the reception stop is detected in one or both systems, or when a failure occurs due to data mismatch in both systems, the output control command is invalidated (not validated) and an erroneous control command is issued. In addition to ensuring fail-safe properties that prevent the propulsion control device from being given, the failure occurrence of the receiver is output to the outside regardless of the presence or absence of a received signal.

Example 6. FIG. 8 shows a train operation control command receiver according to another embodiment. The difference from the fifth embodiment is that
The point is that the outputs of the reception stop detecting means 115, 125 are input to the data comparing means 114, 124 to detect the match / mismatch. With the above configuration,
When either one of the reception stop detecting means 115, 125 fails and the outputs of both of them become inconsistent, either or both of the data comparing means detect this and the output of the excitation signal is stopped and the control command valid relay coil 106. Is demagnetized and a receiver failure is output. That is, the failure of the reception stop detecting means can be detected, and the reliability is improved.

Example 7. FIG. 9 shows a train operation control command receiver according to still another embodiment.
First and second demodulation circuits 131 and 13 for each system
2 is provided, and processing is performed in both systems based on the serial transmission signals converted and output by each, and each output data is compared with the input data. Therefore, when either one of the demodulation circuits 131 and 132 fails and the outputs of both of them do not match, the data comparison means detects this and a receiver failure is output as in the sixth embodiment. That is, the failure of the demodulation circuit can be detected, and the reliability is further improved.

Example 8. Although illustration is omitted, by adopting the same configuration as that shown in FIG. 4 in the receiver as well, when the normal system receiver fails, the standby system receiver is automatically switched to the fault-tolerant train operation control. A command receiver can be realized.

Example 9. The various relays used in each of the above embodiments may be configured to operate using logic elements. Further, by connecting the train operation control command transmitter and the receiver described above by the duplicated control command transmission line, a more reliable control command transmission system can be realized.

[0088]

According to the first aspect of the invention, the original serial transmission signal obtained by demodulating the output of the modulation circuit is used as the serial transmission signal of the other system circuit, and the input signal to the comparing means coincides with the serial transmission signal of the own system circuit. Since the non-coincidence is determined, it is possible to reliably prevent the erroneous operation control command due to the failure of the modulation circuit.

Further, according to the second aspect of the invention, in each system circuit, the data comparison means determines whether or not the driver's cab start command in the own system circuit and the other system circuit coincides with each other. By turning off the relay contact, an erroneous start command due to a failure of the cab start determining means is not transmitted.

According to the third aspect of the invention, the AND circuit checks the coincidence of the start command output from the driver's cab start determining means in each system circuit, and if no match is determined, the operation start is started. By turning off the relay, it is possible to reliably prevent an incorrect start command from being sent.

Further, according to the fourth aspect of the invention, since the transmitter is automatically switched to the other transmitter of the standby system at the time of failure, maintainability and reliability of the transmitting function are improved.

Further, according to the fifth aspect of the present invention, the reception stop detecting means is provided to control the ON / OFF of the control command valid signal depending on the presence / absence of the received signal, and the output of the data comparing means operates to output the failure signal. Since the second relay contact is provided, it is possible to reliably determine and detect the failure of the receiver.

According to the sixth aspect of the invention, since the data comparison is performed by including the output signals from the reception stop detecting means of both systems, it is possible to detect the failure of the reception stop detecting means itself. Become.

According to the seventh aspect of the invention, since demodulation circuits are provided in both systems to perform data comparison, it is possible to detect a failure in the demodulation circuit.

Further, according to the eighth aspect of the invention, since the receiver is automatically switched to the other receiver of the spare system when a failure occurs, the maintainability and the reliability of the receiving function are improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a functional configuration of a train operation control command transmitter of the first invention.

FIG. 2 is a diagram showing a specific example of a modulation circuit in FIG.

FIG. 3 is an operation explanatory diagram of FIG. 2;

FIG. 4 is a configuration diagram of a train operation control command transmitter having a mechanism for switching to a standby system according to another embodiment of the present invention.

FIG. 5 is a block diagram showing a functional configuration of a train operation control command transmitter of the second invention.

FIG. 6 is a block diagram showing a functional configuration of a train operation control command transmitter of the third invention.

FIG. 7 is a block diagram showing a functional configuration of a train operation control command receiver of the fifth invention.

FIG. 8 is a block diagram showing a functional configuration of a train operation control command receiver of the sixth invention.

FIG. 9 is a block diagram showing a functional configuration of a train operation control command receiver of the seventh invention.

FIG. 10 is a block diagram showing a functional configuration of a conventional train operation control command transmitter.

FIG. 11 is a signal waveform diagram for explaining the operation.

FIG. 12 is a block diagram showing a functional configuration of a conventional train operation control command receiver.

[Explanation of symbols]

 1 1-system circuit 2 2-system circuit 3 Modulation circuit 4 Excitation signal output circuit 6 Transmission effective relay coil 7 First relay contact 8 Second relay contact 9 Demodulation circuit 10 Driver's cab start relay 11, 21, 21 First and second Input means 12,22 First and second serial transmission transmitting means 13,23 First and second serial transmission receiving means 14,24 First and second data comparing means 15,25 First and second operation Stand activation determination means 31 Third input means 41 Train operation control command transmitter A 51 Train operation control command transmitter B 61 Switching means 101 1-system circuit 102 2-system circuit 103, 131, 132 Demodulation circuit 104 Excitation signal output circuit 106 Control command valid relay coil 107 First relay contact 108 Second relay contact 110 Control command receiving relay 111, 121 First and second Serial transmission reception means 112,122 First and second output means 113,123 First and second input means 114,124 First and second data comparison means 115,125 First and second reception stop detection means

Claims (8)

[Claims] 1. A first and second input means for inputting an operation control command, a third input means for inputting a cab start command, and a first input means for a signal input from the first input means. First serial transmission transmitting means for generating transmission data and transmitting it as a first serial transmission signal, and second transmission data is generated from the signal input from the second input means and transmitted as a second serial transmission signal. Second serial transmission transmitting means, a modulation circuit that outputs a modulated serial transmission signal that is a modulation of the first serial transmission signal, and a demodulation of the modulated serial transmission signal that is the original first transmission signal.
, A demodulation circuit that outputs a demodulation serial transmission signal equal to the serial transmission signal, first serial transmission receiving means that receives the second serial transmission signal and creates first received data, and receives the demodulation serial transmission signal Second to create second received data
Serial transmission / reception means, first data comparison means for comparing the first transmission data and the first reception data and outputting a first excitation signal based on the comparison result, the second transmission data and the first transmission data Second data comparing means for comparing the second received data with each other and outputting a second excitation signal based on the comparison result, and when both the first excitation signal and the second excitation signal are output 3, an excitation signal output circuit for outputting an excitation signal, a transmission effective relay coil excited by the third excitation signal, and a driver's cab that is driven by a start command and connects the modulated serial transmission signal to the transmission line side into the train. A start relay, a first relay contact for connecting the modulated serial transmission signal to a control command transmission line for passing through the train when the transmission effective relay coil is excited, and a connection with excitation / demagnetization of the transmission effective relay coil. Train Traffic control command transmitter having an operation and a second relay contact for outputting a demagnetizing side as a fault signal to. 2. A first transmission data is created from first and second input means to which an operation control command and a cab start command are input, and a signal input from the first input means to generate a first serial data. First serial transmission transmitting means for transmitting as a transmission signal,
A second transmission data is created from the signal input from the second input means and is transmitted as a second serial transmission signal.
Serial transmission / transmission means, first driver's cab start-up determining means for judging driver's start-up from the signal input from the first input means, and outputting a first start-up command, input from the second input means Second cab activation determining means for determining activation of the cab from the generated signal and outputting a second activation command, a modulation circuit for modulating the first serial transmission signal and outputting a modulated serial transmission signal, the modulation A demodulation circuit that demodulates the serial transmission signal and outputs a demodulation serial transmission signal that is equal to the original first serial transmission signal; a first serial circuit that receives the second serial transmission signal and creates first received data. Column transmission / reception means, second serial transmission / reception means for receiving the demodulated serial transmission signal to create second reception data, comparing the first transmission data with the first reception data, and further comparing the first transmission data with the first reception data. Compare the start command and the second start command. First data comparison means for outputting a first excitation signal based on the comparison result, compares the second transmission data with the second reception data, and further outputs the first activation command and the second activation command. Second data comparing means for comparing and outputting a second excitation signal based on the comparison result, and outputting a third excitation signal when both the first excitation signal and the second excitation signal are output An excitation signal output circuit, a transmission enable relay coil excited by the third excitation signal, a cab start relay that is driven by a start command and connects the modulated serial transmission signal to the transmission line side into the train, and the transmission enable When the relay coil is excited, the first relay contact that connects the modulated serial transmission signal to the control command transmission line that runs through the train, and the transmission enable relay coil operates in conjunction with the excitation / demagnetization to activate the demagnetization side. Train Traffic control command transmitter comprising a second relay contact for outputting a disabled signal. 3. A first transmission data is created from first and second input means for inputting an operation control command and a driver's cab start command, and a first serial data is generated from a signal input from the first input means. First serial transmission transmitting means for transmitting as a transmission signal,
A second transmission data is created from the signal input from the second input means and is transmitted as a second serial transmission signal.
Serial transmission / transmission means, first driver's cab start-up determining means for judging driver's start-up from the signal input from the first input means, and outputting a first start-up command, input from the second input means Second cab activation determining means for determining activation of the cab from the generated signal and outputting a second activation command, a modulation circuit for modulating the first serial transmission signal and outputting a modulated serial transmission signal, the modulation A demodulation circuit that demodulates the serial transmission signal and outputs a demodulation serial transmission signal that is equal to the original first serial transmission signal; a first demodulation circuit that receives the second serial transmission signal and creates first received data. Column transmission / reception means, second serial transmission / reception means for receiving the demodulated serial transmission signal to create second reception data, comparing the first transmission data with the first reception data, and based on the comparison result The first de-energization device that outputs the first excitation signal Comparing means, second data comparing means for comparing the second transmission data and the second receiving data and outputting a second excitation signal based on the comparison result, the first excitation signal and the second data comparing means. An excitation signal output circuit that outputs a third excitation signal when both the excitation signal is output, a transmission valid relay coil that is excited by the third excitation signal, the first start command, and the second start A cab start relay that connects the modulated serial transmission signal to the transmission line side into the train driven by the logical product with the command, and passes the modulated serial transmission signal through the train when the transmission effective relay coil is excited. Train operation control command transmission including a first relay contact connected to the control command transmission line and a second relay contact that operates in conjunction with the excitation / demagnetization of the transmission effective relay coil and outputs the demagnetization side as a failure signal Vessel. 4. The train operation control command transmitter according to any one of claims 1 to 3 is provided in each of a normal system and a standby system, and an operation control command and a cab start command are constantly input to both transmitters. At the same time, when the transmission enable relay coil of the normal system transmitter is excited, the output line of the modulated serial transmission signal from the normal system transmitter is connected to the control command transmission line, and the transmission effective relay of the normal system transmitter is connected. Train operation control command transmitter equipped with switching means for switching the connection of the output line of the modulated serial transmission signal from the standby system transmitter to the control command transmission line when the coil is not excited. .. 5. A demodulation circuit for demodulating a modulated serial transmission signal from a train operation control command transmitter, a first serial transmission receiving means for creating first reception data from the demodulated serial transmission signal, and a demodulated serial transmission signal. Second serial transmission / reception means for creating second reception data from the transmission signal, and first first output command data for creating first output data from the first reception data and outputting a first control command signal as a control command. Output means, second output means for creating second output data from the second received data and outputting a second control command signal, and inputting the second control command signal for creating first input data First input means to
Second input means for inputting the first control command signal and creating second input data, first reception stop detecting means for detecting stop of reception of the first serial transmission receiving means, and second
Second reception stop detecting means for detecting reception stop of the serial transmission receiving means, first output data is compared with the first output data, and a first excitation signal is output based on the comparison result. Data comparing means for comparing the second output data with the second input data and outputting a second excitation signal based on the comparison result, the first excitation signal and the second data comparing means An excitation signal output circuit that outputs a third excitation signal when both of the excitation signals are output, a control command valid relay coil that is excited by the third excitation signal, and the first reception stop detection means. A control command receiving relay that is driven by a logical product of the outputs of the second reception stop detecting means and outputs when both means do not detect the reception stop, and outputs when the control command valid relay coil is excited. Lille of 1 A contact, a control command valid signal output circuit that outputs a control command valid signal when both the first relay contact and the control command reception relay output, and the control command valid relay coil operates in conjunction with the excitation / demagnetization of the coil. A train operation control command receiver including a second relay contact that outputs the demagnetization side as a failure signal. 6. A demodulation circuit for demodulating a modulated serial transmission signal from a train operation control command transmitter, a first serial transmission receiving means for creating first received data from the demodulated serial transmission signal, and a demodulated serial signal. Second serial transmission / reception means for creating second reception data from the transmission signal, and first first output command data for creating first output data from the first reception data and outputting a first control command signal as a control command. Output means, second output means for creating second output data from the second received data and outputting a second control command signal, and inputting the second control command signal for creating first input data First input means to
Second input means for inputting the first control command signal and creating second input data, first reception stop detecting means for detecting stop of reception of the first serial transmission receiving means, and second
Second reception stop detecting means for detecting reception stop of the serial transmission receiving means, comparing the first output data with the first input data, and further, the first reception stop detecting means and the second reception stop. First data comparing means for comparing outputs from the detecting means and outputting a first excitation signal based on the comparison result, comparing the second output data with the second input data, and further receiving the first receiving data. Second data comparison means for comparing outputs of the stop detection means and the second reception stop detection means and outputting a second excitation signal based on the comparison result, the first excitation signal and the second excitation signal When both are output
An excitation signal output circuit for outputting the excitation signal, a control command valid relay coil excited by the third excitation signal, and a reception stop detected by the output of the first or second reception stop detection means. When the control command receiving relay that outputs when the control command valid relay coil is excited, the first relay contact that outputs when the coil is excited, and the control command valid signal when both the first relay contact and the control command receiving relay output A train operation control command receiver including a control command valid signal output circuit that outputs a signal, and a second relay contact that operates in conjunction with excitation / demagnetization of the control command valid relay coil and outputs the degaussing side as a failure signal. 7. A first serial transmission signal is demodulated from a train operation control command transmitter to output a first serial transmission signal.
Demodulation circuit, a second demodulation circuit that demodulates the modulated serial transmission signal from the train operation control command transmitter and outputs a second serial transmission signal, first received data from the demodulated first serial transmission signal First serial transmission / reception means, second serial transmission / reception means for producing second reception data from the demodulated second serial transmission signal, first output data from the first reception data First output means for producing a first control instruction signal to be a control instruction and second output means for producing a second output data from the second received data and outputting a second control instruction signal. A first input means for inputting the second control command signal to create first input data, a second input means for inputting the first control command signal to create second input data, First for detecting reception stop of the first serial transmission receiving means Reception stop detecting means, second reception stop detecting means for detecting reception stop of the second serial transmission receiving means, comparing the first output data with the first input data, and further stopping the first reception The outputs of the detection means and the second reception stop detection means are compared, and the first output is made based on the comparison result.
Data comparing means for outputting an excitation signal of
Comparing the output data of the first reception stop detecting means with the output data of the second reception stop detecting means, and outputting a second excitation signal based on the comparison result. 2 data comparison means, an excitation signal output circuit that outputs a third excitation signal when both the first excitation signal and the second excitation signal are output, and is excited by the third excitation signal Control command valid relay coil, above first
Alternatively, a control command receiving relay that is driven by the output of the second reception stop detecting unit and outputs when the reception stop is not detected, a first relay contact that outputs when the control command valid relay coil is excited, A control command valid signal output circuit that outputs a control command valid signal when both the first relay contact and the control command receiving relay output, and the control command valid relay coil operates in conjunction with the excitation / demagnetization of the coil to activate the demagnetization side. A train operation control command receiver having a second relay contact that outputs a failure signal. 8. The train operation control command receiver according to claim 5 is provided in each of a normal system and a standby system, and a modulated serial transmission signal from the train operation control command transmitter is provided in both the receivers. Control command valid for the normal system receiver, the control command signal from the normal system receiver is output as a control command when the relay coil is excited, and the control command for the normal system receiver is valid. A train operation control command receiver having switching means for switching the output so that the control command signal from the standby system receiver is output as a control command when the relay coil is not excited.