JPH0820342A - Ground device and vehicle control device - Google Patents

Abstract

PURPOSE:To make a forward announcement with one carrier wave by providing transmitters interrupting the transmission of the presentation signals when the presentation announcement is made that the presentations in the forward closed zone are to be changed and transmitting the modulated presentation announcement signal for a predetermined time. CONSTITUTION:A train is traveled on a track 1 divided into multiple closed zones 0T, 1T, 2T... having uninsulated closed boundaries, and transmitters 21, 22 are separately connected to the closed zones 1T, 2T at one end respectively. Presentation signals F1, F2 modulated with carrier waves fc1, fc2 by frequencies fm1-fm7 determined correspondingly to presentations are transmitted from the transmitters 21, 22. When the presentation announcement is made that the presentations of the forward closed zones 2T, 3T are to be changed, the transmission of the presentation signals F1, F2 is interrupted, and presentation announcement signals P1, P2 formed when the carrier waves fc1, fc2 are modulated by the frequency fm determined correspondingly to the presentation announcement are transmitted for a prescribed time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground device and a vehicle control device.

[0002]

2. Description of the Related Art In recent years, a vehicle control device, for example, an automatic train control device (hereinafter referred to as an ATC device) has a multi-view structure and a closed section is shortened from the viewpoint of enhancing transportation capacity. Therefore, it is difficult to visually confirm the indication of the terrestrial traffic light, and an in-vehicle traffic light is adopted instead of the terrestrial traffic light. As an example of an in-vehicle signal device of an ATC device, a vehicle speed signal device provided with an in-vehicle signal device is disclosed in Nippon Signal Technical Report (Vol. 15, published January 1991). The on-board traffic light displays the signal indicating the closed section in which the train is traveling, not the signal indicating the closed section in front. Therefore, when the front closed section is in the low level, the front warning is given.

In such an ATC device, a ground device uses a non-resonant non-insulated track circuit, and separate carriers are used for the ATC display signal and the warning signal for forward warning. . The non-resonant non-insulated track circuit does not have a resonator for attenuating the carrier wave of the track circuit at the boundary portion of the track circuit, and allows the track circuit a plurality of carrier waves. Therefore, by keeping the modulated wave as the announcement signal as it is and changing it to the carrier wave for the advance notice, the indication of the front closed section can be displayed as the forward notice.

[0004]

However, the conventional ground device and vehicle control device have the following problems. (A) Because a different carrier is used for forward notice,
It cannot be applied to a resonance type non-insulated track circuit in which the carrier wave is limited to one wave. This is because the resonance-type non-insulated track circuit attenuates the carrier wave on the receiving end side by using the resonance circuit in order to clarify the closed boundary, and it is not allowed that two carrier waves exist. (B) Resonance-type non-insulated track circuits have been widely used in the past, and conventional equipment must be changed to non-resonance-type non-insulated track circuits for advance notice.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ground device which can give a forward notice with one carrier wave.

Another object of the present invention is to provide a vehicle control device capable of performing vehicle control based on forward notice of one carrier wave.

Another object of the present invention is to provide a ground device and a vehicle control device capable of giving a front notice while reducing the changes in conventional equipment.

[0008]

In order to solve the above problems, the ground apparatus according to the present invention includes a track, a transmitter, and a resonator. The track is divided into a plurality of closed sections, and the closed boundaries of the closed sections are not insulated. The transmitter is individually connected to one end side of each of the closed sections, and transmits a display signal in which a carrier wave is modulated at a frequency determined corresponding to the display, and the display of the front closed section changes. Transmission of the announcement signal is interrupted, and an announcement announcement signal obtained by modulating the carrier wave at a frequency determined corresponding to the announcement announcement is given for a certain time. Send. The resonator is individually connected to the other end of each of the closed sections and resonates at the frequency of the carrier wave in the closed section.

In a preferred example, the transmitter transmits the announcement notice signal using a plurality of modulation frequencies corresponding to the contents of the announcement notice.

In another preferred example, the transmitter stores a display pattern of adjacent block sections, receives a vehicle detection signal of its own block section and an adjacent block section, and detects a change in the vehicle detection signal. The display change of the front closed section is predicted from the display pattern and the display advance signal is transmitted.

In another preferred example, the transmitter includes a carrier wave generation circuit, a first modulated wave generation circuit, a second modulated wave generation circuit, a discrimination circuit, and a mixer circuit.
The carrier wave generation circuit generates the carrier wave. The first modulated wave generation circuit generates a first modulated wave having a frequency determined according to the indication. The second modulated wave generation circuit generates a second modulated wave having a frequency corresponding to the announcement notice. The discrimination circuit supplies the first modulated wave to the mixer circuit when transmitting the indication signal,
The second modulated wave is supplied to the mixer circuit when the display advance notice signal is transmitted. The mixer circuit modulates the carrier wave and the first modulated wave or the second modulated wave to obtain the display signal or the display advance signal.

The vehicle control device according to the present invention includes a ground device and an on-vehicle device. The ground device is the one described above. The on-board device includes a signal processing circuit. The signal processing circuit receives the detection signal and the detection notification signal, detects the detection to determine the display and the notification notification, and immediately before the reception signal cannot be received for the predetermined time. The above-mentioned display state of is maintained.

[0013]

The track is divided into a plurality of closed sections, and the closed boundaries of the closed sections are not insulated. The transmitter is individually connected to one end side of each closed section, and transmits a display signal obtained by modulating a carrier wave at a frequency determined corresponding to the display. The resonator is individually connected to the other end side of each closed section and resonates at the frequency of the carrier wave in the closed section. Therefore, the other end side is substantially short-circuited by the resonator, and the carrier wave of the indicating signal transmitted from the one end side is attenuated at the other end side and does not flow into the adjacent closed section behind the course.

The transmitter transmits the indication signal to the blocking section. Therefore, the on-board device that has received the display signal can display the on-board traffic light based on the display signal.

The transmitter interrupts the transmission of the indication signal and gives the carrier wave at a frequency determined in accordance with the announcement notice when giving an announcement notice that the indication of the front closed section changes. The modulated announcement notice signal is transmitted for a predetermined time. For this reason, the on-vehicle device can identify the present signal and the present notice signal according to the modulation frequency even if the carrier wave is the same. Therefore, it is possible to obtain a ground-based device capable of giving a forward notice with one carrier wave.

In the example in which the transmitter transmits the announcement notice signal using a plurality of modulation frequencies corresponding to the contents of the announcement notice, the announcement start, the announcement end, and the first and lower rank announcements are corresponding to each frequency. It is possible to transmit presentation information such as (a presentation one step lower than the presentation of the section), a second rank lower presentation (a presentation two steps lower than the presentation of the section), and the like. As a result, the accuracy of transmission of the notice is improved by a series of operations of the notice start, the notice notice (first rank lower notice), and the notice end, and appropriate control can be performed by the notice notice.

The transmitter stores the display pattern of the adjacent block section, receives the vehicle detection signals of its own block section and the adjacent block section, and detects the change of the vehicle detection signal and the block pattern in front of the block. In the example of predicting the change in the section and transmitting the notice signal, the preceding vehicle has advanced through the closed section ahead, the following vehicle is approaching the preceding vehicle that is stopped, etc. Appropriate advance notice can be given.

The ground equipment is the one described above. The on-board device includes a signal processing circuit. The signal processing circuit
The display signal and the display notification signal are received and detected to determine the display and the display notification, and the previous display signal is maintained even when the display signal cannot be received for a predetermined time. In this way, the ground device suspends the transmission of the display signal, transmits the display advance notice signal for a predetermined time, and the signal processing circuit immediately before the reception of the display signal for the predetermined time. Since the display signal is maintained, the on-board device can receive the display notification signal while maintaining the immediately preceding display signal. For this reason, the on-vehicle device that has received the notification signal can predict the change in the indication of the front closed section, and the control suitable for the indication of the front closed section before the vehicle enters the front closed section. Can be done. For example, if the transmitter is configured to transmit a notice signal in advance when the front closed section changes to a lower display, the on-board device sets the front closed section before the vehicle enters the front closed section. It is possible to predict the indication and perform brake control and the like in advance. As a result, a vehicle control device that can perform vehicle control based on the advance notice of one carrier wave can be obtained.

The carrier wave generating circuit generates a carrier wave, the first modulating wave generating circuit generates a first modulating wave having a frequency determined corresponding to the indication, and the discriminating circuit transmits the indicating signal. The first modulated wave is supplied to the mixer circuit, and the mixer circuit modulates the carrier wave and the first modulated wave to obtain the display signal. Therefore, the transmitter blocks the display signal as in the conventional case. You can send to the section.

The second modulated wave generation circuit generates a second modulated wave having a frequency determined corresponding to the announcement notice, and the discrimination circuit generates the second modulated wave when transmitting the announcement notice signal. The mixer circuit supplies the signal to the mixer circuit, the mixer circuit modulates the carrier wave and the second modulated wave, and obtains the announcement notice signal. Therefore, the transmitter can transmit the announcement notice signal in the closed section. Therefore, it is possible to give a forward notice only by adding the second modulated wave generation circuit and the discrimination circuit to the conventional transmitter. Therefore, it is possible to obtain a ground-based device capable of giving a front notice while reducing the changes in conventional equipment.

The signal processing circuit usually has a function of maintaining the immediately preceding display signal with respect to the instantaneous interruption for a certain period of time in order to prevent no signal due to the instantaneous interruption of the present signal. For this reason,
The vehicle control based on the forward warning of one carrier wave can be performed only by adding the function of identifying the modulation frequency of the announcement signal to the signal processing circuit.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the configurations of a ground device and a vehicle control device according to the present invention. The ground device according to the present invention includes an orbit 1, transmitters 21 and 22, and resonators 31 and 3.
Includes 2 and. In the figure, reference numeral 4 is a vehicle.

The track 1 has a plurality of closed sections 0T, 1T, 2
It is divided into T ... Blocked section 0T, 1T, 2T
The closed boundary of ... Is not insulated.

The transmitters 21 and 22 have closed sections 1T and 2T, respectively.
Carrier wave fc1, which is individually connected to one end side of each of
The frequencies fm1 to fm determined in correspondence with the actual display of fc2.
The display signals F1 and F2 modulated by 7 are transmitted. Since the carrier waves fc1 and fc2 are common to the respective display signals, specific examples of the display signals F1 and F2 are shown by the modulation frequencies fm1 to fm7 indicating the contents of the display signal. For example, when the in-vehicle signal display is 90 km / h, the modulation frequency fm1 is 16 Hz, and when the in-vehicle signal display is 75 km / h, the modulation frequency fm2 is 2.
The modulation frequency fm3 is set to 28 Hz when the vehicle interior signal display is 3 Hz and 55 km / h, and the modulation frequency fm7 is set to 77 Hz when the vehicle interior signal display is 0 km / h (01 display). The transmitter 21 suspends the transmission of the indication signal F1 and gives the carrier wave fc1 at a frequency determined in accordance with the announcement notice when giving the announcement notice that the indication of the front closed section 2T changes. The announcement notice signal P1 modulated by fm8 is transmitted for a predetermined time T. The modulation frequency fm8 is, for example, 8
It is set to 9 Hz. The timing of transmitting the announcement notice is instructed by a command signal S1 from a central device (not shown) that manages vehicle operation at the center. Similarly, the transmitter 22 suspends the transmission of the indication signal F2 and gives the carrier wave fc2 corresponding to the announcement notice when giving the announcement notice that the indication of the front closed section 3T changes. Frequency fm8
The announcement notice signal P2 modulated by is transmitted for a predetermined time T.

The resonators 31 and 32 have closed sections 1T and 2T.
Of the closed section 1T,
It resonates at the frequencies of the 2T carrier waves fc1 and fc2.

As described above, the track 1 is divided into a plurality of closed sections 1T and 2T, and the closed boundaries of the closed sections 1T and 2T are not insulated. Transmitters 21 and 22
Are respectively connected to one end sides of the closed sections 1T and 2T, and carrier signals fc1 and fc2 are modulated at frequencies fm1 to fm7 determined in correspondence with the manifestation signals F1 and F1.
Send 2. The resonators 31 and 32 are closed sections 1T and 2
Each of the other ends of T is individually connected to the closed section 1
It resonates at frequencies of carrier waves fc1 and fc2 of T and 2T.
Therefore, the other ends are substantially short-circuited by the resonators 31 and 32, and the display signals F1 and F2 transmitted from the one end are
The carrier waves fc1 and fc2 are attenuated on the other end side and do not flow into the adjacent closed sections 0T and 1T behind the path. Therefore, the closed sections 1T and 2T form a substantially independent track circuit, and a conventional resonant non-insulated track circuit can be configured. Present signals F1 and F of adjacent closed sections 1T and 2T
Since carrier frequencies fc1 and fc2 of No. 2 are different from each other, mutual interference of the display signals F1 and F2 in the closed sections 1T and 2T can be more reliably prevented.

The transmitter 21 switches the indication signal F1 to the closed section 1
Send to T. Similarly, the transmitter 22 transmits the indication signal F2 to the closed section 2T. Therefore, the on-board device 5 that has received the indication signal F1 can display the in-vehicle signal 6 in association with the indication of the closed section 1T. Similarly, the on-board device 5 that has received the display signal F2 can display the in-vehicle signal 6 in association with the display of the closed section 2T.

The transmitter 21 suspends the transmission of the indication signal F1 and gives the carrier wave fc1 in correspondence with the announcement notice when giving the announcement notice that the indication of the front closed section 2T changes. The announcement notice signal P1 modulated with the specified frequency fm8 is transmitted for a predetermined time T. Similarly, the transmitter 22
Stops the transmission of the indication signal F2 and gives the carrier wave f when giving an announcement notice that the indication of the front closed section 2T changes.
An announcement notice signal P2 obtained by modulating c2 with a frequency fm8 decided corresponding to the announcement notice is transmitted for a certain time T. Therefore, the on-board device 5 can identify the indicating signal F1 and the indicating notice signal P1 according to the modulation frequencies fm1 to fm7 and fm8 even if the carrier fc1 is the same. The same applies to the carrier wave fc2. Therefore, it is possible to obtain a ground-based device capable of giving a forward notice with one carrier wave.

In the embodiment, the transmitters 21 and 22 use the plurality of modulation frequencies fm8 to fm11 to indicate the announcement signal P.
1 and P2 are transmitted. In this example, each modulation frequency fm8
~ For fm11, start warning, end warning,
1st place lower display (display one step lower than the display of the relevant section),
It is possible to transmit the presentation information such as the second-ranking lower presentation (the presentation that is two steps lower than the presentation of the section). Therefore, the transmission accuracy of the notice is improved by a series of operations of the notice start, the notice notice (first rank lower notice), and the notice end, and appropriate control can be performed by the notice notice.

The transmitter 21 of the embodiment stores the presenting pattern of the adjacent closed sections 0T to 3T, and the closed pattern 1 of its own.
Vehicle detection signal S2 of T and adjacent closed sections 2T, 3T
The vehicle detection signal S3 of No. 1 is input, the change of the vehicle detection signal S3 and the change pattern are predicted to predict the change in the forward closed sections 2T and 3T, and the notice signal P1 is transmitted. The same applies to the transmitter 22. In this example, an appropriate advance notice can be given according to a change such as a preceding vehicle (not shown) having advanced through the closed section 3T or a following vehicle 4 approaching a stopped preceding vehicle.

The ground device A is the one described above. The on-board device 5 includes a signal processing circuit 51. The signal processing circuit 51 receives the detection signal F1 and the notification notification signal P1 and detects them to determine whether they are the notification and the notification notification, and when the notification signal F1 cannot be received for a predetermined time. The immediately preceding display signal F1 is maintained. Signal processing circuit 51 of the embodiment
Indicates that the receiving circuit 511 has the display signal F1 and the display advance notice signal P.
When 1 is received, the determination circuit 512 detects the present signal F1 and the present notice signal P1 and determines whether the present indication and the present notice are different. The on-board traffic light 6 is displayed according to the determined indication and the notice of the indication. In this way, the ground equipment A suspends the transmission of the display signal F1 and transmits the display advance notice signal P1 for a predetermined time T, and the signal processing circuit 51 outputs the display signal F1 for the predetermined time T. Since the immediately preceding announcement signal F1 is maintained even when reception is not possible, the on-board device 5 can receive the announcement notice signal P1 while maintaining the immediately preceding announcement signal F1. Therefore, the on-vehicle device 5 that has received the notification signal P1 can predict the change in the front closed section 2T, and the vehicle 4 can detect the front closed section 2T before the vehicle 4 enters the front closed section 2T. It is possible to perform control suitable for the display. For example, when the transmitter 21 is configured to transmit the notice signal P1 when the front closed section 2T changes to a lower display, the on-board device 5 causes the vehicle 4 to move before the vehicle 4 enters the front closed section 2T. In addition, the brake control and the like can be performed in advance by predicting the indication of the front closed section 2T. Display signal F2 and notification signal P
The same applies when receiving 2. This allows carrier wave 1
It is possible to obtain a vehicle control device capable of performing vehicle control based on the advance notice of waves.

FIG. 2 is a specific circuit diagram of the transmitter which constitutes the ground equipment according to the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same components.

The transmitter 21 includes a carrier wave generation circuit 211,
It includes a first modulated wave generation circuit 212, a second modulated wave generation circuit 213, a discrimination circuit 214, and a mixer circuit 215. The carrier wave generation circuit 211 generates a carrier wave fc1. The first modulated wave generation circuit 212 generates the first modulated waves fm1 to fm7 having a frequency determined according to the display. The second modulated wave generation circuit 213 generates the second modulated wave fm8 having a frequency corresponding to the announcement notice. The discrimination circuit 214 supplies the first modulation waves fm1 to fm7 to the mixer circuit 215 when transmitting the display signal F1, and the second modulation wave fm8 when transmitting the display notification signal P1. Supply to. The discriminating circuit 214 of the embodiment is constituted by a relay R8, and its contact is electrically connected to either the first modulated wave generating circuit 212 or the second modulated wave generating circuit 213. The mixer circuit 215 modulates the carrier wave fc1 and the first modulated wave fm1 to fm7 or the second modulated wave fm8 to obtain the display signal F1 or the display notification signal P1. The display signal F1 or the display notification signal P1 is amplified by the amplifier 216 and transmitted to the closed section 1T.

As described above, the carrier wave generation circuit 211 generates the carrier wave fc1, and the first modulated wave generation circuit 212 has the first modulated wave fm1 having a frequency determined in accordance with the display.
˜fm7, the discrimination circuit 214 supplies the first modulated waves fm1 to fm7 to the mixer circuit 215 when transmitting the indication signal F1, and the mixer circuit 215 causes the carrier wave fc1 to be generated.
And the first modulated waves fm1 to fm7 are modulated to obtain the display signal F1, the transmitter 21 can transmit the display signal F1 in the closed section 1T as in the conventional case.

The second modulation wave generation circuit 213 generates a second modulation wave fm8 having a frequency corresponding to the announcement notice, and the discrimination circuit 215 transmits the announcement notice signal P1 to the second modulation wave fm8. To the mixer circuit 215, and the mixer circuit 2
Reference numeral 15 modulates the carrier wave fc1 and the second modulated wave fm8 to obtain the announcement notice signal P1, so that the transmitter 21 can transmit the announcement notice signal P1 in the closed section 1T. For this reason,
Only by adding the second modulated wave generation circuit 213 and the discrimination circuit 214 to the conventional transmitter, it is possible to give a forward notice. Therefore, it is possible to obtain a ground-based device capable of giving a front notice while reducing the changes in conventional equipment.

On the other hand, the signal processing circuit 51 uses the present signal F1.
In order to prevent no signal due to momentary interruption of
It has a function of maintaining the immediately preceding display signal F1 with respect to the instantaneous interruption. Therefore, the vehicle control based on the forward notice of one carrier wave can be performed only by adding the function of identifying the modulation frequency fm8 of the announcement signal P1 to the signal processing circuit 51.

[0037]

As described above, according to the present invention, the following effects can be obtained. (A) It is possible to provide a terrestrial device that can give advance notice with one carrier wave. (B) It is possible to provide a vehicle control device that can perform vehicle control based on the advance notice of one carrier wave. (C) It is possible to provide a ground control device and a vehicle control device capable of giving a front notice with a small change in conventional equipment.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a ground device and a vehicle control device according to the present invention.

FIG. 2 is a specific circuit diagram of a transmitter that constitutes a ground device according to the present invention.

[Explanation of symbols]

 1 Trajectory 1T, 2T Blocked section 21, 22 Transmitter 31, 32 Resonator 4 Vehicle 5 Onboard device 51 Processing circuit 6 In-vehicle signal fc1, fc2 Carrier frequency F1, F2 Display signal fm1 to fm7 Modulation frequency of display signal P1, P2 Announcement notice signal fm8 Modulation frequency of announcement notice signal

Claims (5)

[Claims] 1. A ground apparatus including a track, a transmitter, and a resonator, wherein the track is divided into a plurality of closed sections, and a closed boundary of the closed section is not insulated. The transmitter is individually connected to one end side of each of the closed sections, and transmits a display signal in which a carrier wave is modulated at a frequency determined corresponding to the display, and the display of the front closed section changes. Transmission of the announcement signal is interrupted, and an announcement announcement signal obtained by modulating the carrier wave at a frequency determined corresponding to the announcement announcement is given for a certain time. The ground device for transmitting, wherein the resonator is individually connected to the other end side of each of the closed sections and resonates at the frequency of the carrier wave of the closed section. 2. The ground apparatus according to claim 1, wherein the transmitter transmits the announcement notice signal using a plurality of modulation frequencies corresponding to the contents of the announcement notice. 3. The transmitter stores a display pattern of adjacent block sections, receives vehicle detection signals of its own block section and an adjacent block section, and changes the vehicle detection signal and a display pattern. The ground apparatus according to claim 1 or 2, which predicts a change in a signal in a closed section in front of the vehicle, and transmits the signal to announce the signal. 4. The transmitter comprises a carrier generation circuit and a first carrier generation circuit.
A modulated wave generation circuit, a second modulated wave generation circuit, a discrimination circuit, and a mixer circuit, wherein the carrier wave generation circuit generates the carrier wave, and the first modulated wave generation circuit The circuit is for generating a first modulated wave of a frequency determined corresponding to the presentation, and the second modulated wave generation circuit is of a frequency determined for the announcement notice. A second modulated wave is generated, and the discrimination circuit supplies the first modulated wave to the mixer circuit when transmitting the display signal and transmits the display advance signal when transmitting the display signal. The second modulated wave is supplied to the mixer circuit, and the mixer circuit modulates the carrier wave and the first modulated wave or the second modulated wave to obtain the indication signal or the Claim 1, 2 or 3 for obtaining a notice signal Ground equipment of the mounting. 5. A vehicle control device including a ground device and an onboard device, wherein the ground device is any one of claims 1 to 4, wherein the onboard device is a signal processor. A circuit, the signal processing circuit receives the detection signal or the notification signal of the announcement, and detects the detection to determine the notification of the announcement or the notification of the announcement, the signal for the indication only for the predetermined time. A vehicle control device for maintaining the immediately preceding display state even when reception is not possible.