JPH082017Y2 - ATS device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic train stop device (hereinafter referred to as an ATS device) for automatically stopping a train when the train approaches a stop signal.

[0002]

2. Description of the Related Art In order to safely manage train operation, an alarm is issued when a train approaches a stop signal, and a train is automatically braked to stop the train unless a driver takes necessary action. An ATS device is used. ATS device
For example, as shown in FIG. 3, it has a ground element 31 provided at a point a certain distance before the traffic signal S2 and an on-board device 2 provided on the train 1. The ground element 31 has a resonance circuit of a coil L and a capacitor C, and the coil L of the resonance circuit is a relay 32.
Is connected to the operation contact 33. The relay 32 is excited when the signal sent from the signal device 10 indicates the progress and closes the operating contact 33, shorts the coil L of the ground element 31, and indicates that the signal sent from the signal device 10 is stopped. At this time, it becomes non-excited, the operation contact 33 is opened, the short circuit of the coil L of the ground element 31 is released, and the frequency of the information sent from the ground element 31 is switched. That is, the ground element 31 sends out information of, for example, a frequency of 103 kHz when the traffic light S2 shows the progress, and outputs a frequency of 130 kHz when the traffic light S2 shows the stop.
Is sending out information.

The on-board device 2 is an on-board child 35 including an antenna.
And an onboard receiver 36. The onboard receiver 36 has an oscillating unit 37, a selective amplifying unit 38, and a logic unit 39. The oscillating unit 37 is always provided with a fundamental frequency of, for example, 105 kHz via the car top 35.
Oscillates to excite the main relay of the logic unit 39, and the indicator lamp 40
"Progress" is displayed on. Train 1 runs and car train 3
When 5 is electromagnetically coupled to the ground element 31, when the ground element 31 is controlled to the progress condition side and sends out 103 kHz information, this frequency 103 kHz and the fundamental frequency 105 k of the oscillator 37
Since Hz is close to each other, the onboard receiver 36 is in the same state as when the ground element 31 is not present, and displays "progress" on the indicator light. Further, when the on-board child 35 is electromagnetically coupled to the on-board child 31, when the on-board child 31 is controlled to the stop condition side and sends out information of 130 kHz, the oscillation frequency of the on-board receiver 36 is 105 kHz. The main frequency of the logic unit 39 is de-energized by shifting to the natural frequency 130 kHz of 31 and the display of the indicator lamp is set to "stop", and the bell is sounded to notify "stop" to activate the brake. There is. In this way, the traffic light S
The brake information is transmitted to the train 1 only by installing one kind of ground element 31 at a certain point in front of 2.

[0004]

[Problems to be solved by the invention] However, conventional A
Since the ground element 31 of the TS device has the resonance circuit of the coil L and the capacitor C, the price of the ground element 31 is high and the size is relatively large, so that the installation is not easy. In addition, there is also a disadvantage in that the car top 35, which is an antenna that receives information from the ground wire 31, is also large in size, and that the outfitting work for the train is not easy.

The present invention has been made in order to improve such disadvantages, and an object thereof is to obtain an ATS device which can reduce the price of equipment and facilitate installation work and outfitting work. is there.

[0006]

An ATS device according to the present invention has a terrestrial transmitter (4) and a bar antenna (5) as ground devices, and an on-board child (11) and an on-board device as on-board devices. And a receiver (12), and the terrestrial transmitter (4) outputs traffic signal information according to the indication of the traffic signal in front,
When the front traffic signal (S2) shows the stop, it outputs a continuous wave, and the bar antenna (5) transmits the continuous wave sent from the ground transmitter (4) to the vehicle. It is installed between the rails. is, on-board coil (11) is intended to receive the traffic signal information transmitted from a ground bar antenna (5), traffic information
For checking the receiving coil (13) that receives information and the receiving coil
The on-board receiver (12) sends out the modulation wave for inspection to the modulation coil (14) of the on-board child (11) while the bar coil has loosely coupled the modulation coil (14) for sending out the modulation wave. Continuous wave from the ground with the receiving coil (13)
And outputs a brake information as it is received, strange
Harmonic generator (15), modulator (19) and oscillator (16)
And a brake information detector (18), and a modulated wave generator
(15) sends a modulation wave for verification to the modulation coil (14)
The oscillator (16) generates a signal wave of the fundamental frequency and
The modulator (19) is the modulated wave sent from the receiving coil (13).
Signal of the fundamental frequency generated by the oscillator (16) due to
Modulates the wave, and the brake information detector (18) is a receiving coil.
(13) Modulation for verification without receiving continuous wave from the ground
Signal wave modulated by wave is sent from modulator (19)
Sometimes it outputs a progress signal, and the receiving coil (13) is on the ground
Received continuous wave from the received continuous wave and modulated for verification by the received continuous wave
The wave is disturbed and the signal wave transmitted from the modulator (19) is changed.
When the tuning is different from the signal wave modulated by the reference modulation wave
It is characterized by sending a brake signal to .

[0007]

[Operation] In this invention, as a car upper member from the ground
Using a bar antenna in which a receiving coil that receives signal information and a modulating coil that sends out a modulating wave to the receiving coil are loosely coupled, the modulating wave output from the modulating wave generator of the on-board receiver is always sent through the modulating coil. And send it to the receiving coil for verification. The modulated wave sent to the receiving coil modulates the signal wave of the fundamental frequency generated from the oscillator of the on-board receiver and sends it to the brake information detecting section, and the brake information detecting section outputs a progress signal.

On the other hand, the terrestrial transmitter sends a continuous wave to the bar antenna when the traffic signal in front of the terrestrial transmitter indicates the stop. The bar antenna to which the continuous wave is sent sends signal information on the vehicle, and the magnetic flux output from the bar antenna due to the continuous wave is much larger than the magnetic flux sent from the modulation coil of the car top. Therefore, when the reception coil of the car top and the ground bar antenna are coupled when the traffic signal in front is stopped, the modulated wave for inspection sent from the modulation coil to the reception coil is sent out from the ground bar antenna. The modulation level of the signal wave of the fundamental frequency sent to the brake information detection unit is changed by being disturbed by the continuous wave. The brake information detector detects this change in modulation factor and outputs a stop signal.

[0009]

1 is a block diagram showing the configuration of an embodiment of the present invention. As shown in the figure, the ATS device is the ground device 3
And an on-board device 2 mounted on the train 1. The ground device 3 sends signal information to the train 1, and has a ground transmitter 4 and a bar antenna 5. The terrestrial transmitter 4 has an oscillator 6, an amplifier 7, a relay 8 and a failure detector 9, and a continuous wave generated by the oscillator 6 is passed through the amplifier 7, the failure detector 9, and the recovery contact 8b of the relay 8 to a bar antenna. Send to 5. The bar antenna 5 is for transmitting the continuous wave sent from the ground transmitter 4 onboard the vehicle, and is installed between the rails at a point a certain distance before the signal S2. Ground transportation
The relay 8 of the signal receiver 4 is excited by the signal sent from the signal device 10 when the forward traffic signal S2 indicates the progress and opens the recovery contact 8b, so that the continuous wave sent from the oscillator 6 is released.
The signal sent to the bar antenna 5 is cut off, and when the traffic light S2 shows the stop, it becomes non-excited and the recovery contact 8b is closed.
The continuous wave sent from the oscillator 6 is sent to the bar antenna 5.
It

The on-board device 2 receives the traffic signal information sent from the ground device and outputs a brake signal, and has an on-board child 11 and an on-board receiver 12. The train carrier 11 is composed of a bar antenna in which a receiving coil 13 and a modulating coil 14 for sending a modulated wave to the receiving coil are loosely coupled. The on-board receiver 12 includes a modulated wave generator 15 that sends a modulated wave to the modulation coil 14 of the on-board child 11, and an oscillator 16 that generates a fundamental frequency.
And the oscillator 1 by the modulated wave sent from the receiving coil 13.
Modulator it modulated signal waves of the fundamental frequency that are generated in the 6
It has 19 and the amplifier 17 and the brake information detection part 18 which sends out a brake signal.

The operation of the ATS device configured as described above will be described with reference to the waveform chart of FIG. The modulation wave output from the modulation wave generation unit 15 is constantly sent to the modulation coil 14 of the car body 11. This modulated wave is sent from the modulating coil 14 to the receiving coil 13 for checking. A fundamental frequency, for example, 105 kHz generated from an oscillator 16 is amplitude-modulated by a modulator 19 by the modulated wave sent to the receiving coil 13, and a signal having a waveform shown in FIG. It is sent to the brake information detection unit 18 via. When a signal obtained by amplitude-modulating the basic frequency as shown in FIG. 2A is sent, the brake information detection unit 17 excites the main relay and outputs a progress signal, and the display lamp 40 displays "progress".

On the other hand, the oscillator 6 of the terrestrial transmitter 4 always outputs a continuous wave and sends it to the recovery contact 8b of the relay 8 via the amplifier 7 and the failure detector 9. This relay 8 is excited when the traffic signal S2 in front of the relay 8 indicates the progress, and the contact 8 is restored.
Since b is open, the continuous wave output from the oscillator 6 is not sent to the bar antenna 5 when the traffic signal S2 is in the traveling state, and the state is the same as when the bar antenna 5 is not present. Therefore, in this state, even if the train 1 runs and the car top 35 reaches the position of the bar antenna 5, the car top 11
The verification modulation wave sent from the modulation coil 14 to the reception coil 13 is not disturbed, and the break information detection unit 17 outputs the progress signal.

When the front traffic light S2 changes to the stop indication,
The relay 8 of the terrestrial transmitter 4 becomes non-excited by the signal sent from the signal device 10 and closes the restoration contact 8b. By closing the restoration contact 8b, the continuous wave output from the oscillator 6 is sent to the bar antenna 5 and the magnetic flux corresponding to the continuous wave is emitted from the bar antenna 5. When the train 1 travels in this state and the car top 35 reaches the position of the bar antenna 5, the magnetic flux output from the bar antenna 5 is much larger than the magnetic flux sent out from the modulation coil 14 of the car top 11. Due to its size, the magnetic flux of the modulation wave for inspection sent from the modulating coil 14 to the receiving coil 13 is disturbed by the magnetic flux sent from the ground bar antenna 5. Therefore, the modulation degree of the signal wave of the fundamental frequency sent to the break information detecting unit 18 is shown in FIG.
It changes as shown in (b). Break information detector 18
When the change in the modulation degree is detected, a stop signal is output to turn the display of the indicator lamp 40 to "stop", and a bell is sounded to notify "stop" to activate the brake.

In this way, the modulation wave for verification is constantly sent from the modulation coil 14 to the receiving coil 13 of the car top 11, and the modulation wave for verification is received in response to the continuous wave sent from the bar antenna 5 on the ground. Since the disturbance signal is detected and a break signal is transmitted, the S / N ratio can be improved according to the transmission levels of the modulated wave for inspection and the continuous wave, and the front traffic signal S2 is stopped. Sometimes the on-board device 2 can reliably output the brake signal.

Further, the failure detector 9 of the terrestrial transmitter 4 constantly monitors the current of the continuous wave output from the oscillator 6, so that when the failure occurs in the oscillator 6 or the amplifier 7, the failure is surely detected. be able to.

[0016]

As described above, according to the present invention, a modulation wave for verification is constantly sent from the modulation coil to the receiving coil of the car top, and a continuous wave sent from the bar antenna on the ground is received for verification. Detected that the modulated wave of the
Since the signal is transmitted, the car top can be formed by the bar antenna having two coils, and the car top can be manufactured at a low cost.

Further, since the car top is formed by the small bar antenna, it can be easily attached to the train.
Outfitting costs can be reduced.

Further, since the grounding element is only required to have a small bar antenna, the cost can be reduced and the installation can be easily performed.

Furthermore, since the S / N ratio can be improved according to the transmission levels of the modulated wave for inspection and the continuous wave, the brake on the on-board device can be reliably operated when the traffic signal in front is stopped. A signal can be output.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a waveform diagram showing the operation of the above embodiment.

FIG. 3 is a block diagram showing a configuration of a conventional example.

[Explanation of symbols]

 1 Train 2 Onboard Device 3 Ground Device 4 Ground Transmitter 5 Bar Antenna 6 Oscillator 8 Relay 11 Onboard 12 Onboard Receiver 13 Receiving Coil 14 Modulating Coil 15 Modulated Wave Generator 16 Oscillator 18 Break Information Detector

Claims (1)

[Scope of utility model registration request] 1. A ground transmitter (4) and a bar antenna (5) are provided as ground devices, and a car top (1) is provided as a vehicle device.
1) and an on-board receiver (12), and the ground transmitter (4) is a traffic signal according to the indication of the traffic signal in front.
It outputs information, and outputs a continuous wave when the front traffic signal (S2) shows the stop, and the bar antenna (5) transmits the continuous wave sent from the ground transmitter (4) to the vehicle. It is installed between the rails, and the car top (11) receives the signal information transmitted from the bar antenna (5) on the ground, and the receiving coil (13) and the receiving coil that receive the signal information. Modulation for checking
The on-board receiver (12) sends out a modulated wave for verification to the modulation coil (14) of the on-board child (11) and a receiving coil. When the continuous wave is received from the ground at (13), the brake information is output, and it is different from the modulated wave generating section (15).
Controller (19), oscillator (16), and brake information detector
(18) and the modulated wave generator (15) has a modulation coil.
The modulated wave for inspection is sent to Le (14), and the oscillator (16)
The signal wave of the fundamental frequency is generated, and the modulator (19) receives
The oscillator (16) by the modulated wave sent from the IL (13)
The signal wave of the fundamental frequency generated in
The information detection unit (18) is a receiving coil (13) from the ground.
The signal wave modulated by the modulation wave for verification without receiving the continuous wave
Output progress signal when being sent from modulator (19)
Then, the receiving coil (13) receives the continuous wave from the ground and receives it.
The modulated continuous wave for confirmation is disturbed by the continuous wave received, and the modulator (1
The modulation level of the signal wave sent from 9) is the modulation wave for verification.
Sends a brake signal when it differs from the signal wave modulated by
ATS device characterized by taking out .