JPH06335117A - Home position stop controller - Google Patents

Abstract

PURPOSE:To accurately control a stopping position of a train with a simple structure by providing a vehicle signal transmitter on a train and providing a pattern belt and a receiver on the ground. CONSTITUTION:Vehicle position signals having a plurality of types of different frequencies are generated from a traveling vehicle, transmitted to the ground through an antenna 8 having transmission coils 8a-8c of an amplitude (w) arranged at an interval D, and received by loop coils 11a, 11b of a pattern belt 11. Then, the crossing loop coil 11a inverts a phase of a reception signal at each predetermined distance L, outputs it, and the single loop coil 11b outputs the reception signal as it is. Then, a receiver 12 senses a phase change of the reception signal from the coils 11a, 11b at each frequency, outputs a positive signal in the case of the same phase or outputs a negative signal in the case of different phase. A logic unit 3 generates a position signal of the vehicle at each distance (D-L), a vehicle position tracing unit 14 calculates a position and a speed of the vehicle to form brake command data, and sends it to the vehicle through an information transmitter 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed position stop control device for stopping a train at a target point, and more particularly to improvement of stop position accuracy.

[0002]

2. Description of the Related Art In recent years, an automatic train operation method has been adopted which automatically controls operation operations such as speed control and stop of a train. This operating method is a method of always knowing the train speed, position, operating time, preceding train and track status, controlling the train speed while comparing with the standard operation diagram to operate the train, and stop at a predetermined position.

A method of automatically stopping the train at a fixed position corresponds to a deceleration curve that the train follows when a brake is applied to the train on the distance and speed planes with the stop position as a reference. A curve is set and the brake device is controlled so as to decelerate along this curve.

However, it is difficult to make the braking force of an actual train having a different train set constant, and there is considerable variation. Therefore, even if control is performed so as to decelerate along a curve corresponding to the deceleration curve, There is an error from the deceleration curve that the train actually follows. In order to correct this, it is necessary to accurately detect the position of the running train. For this reason, conventionally, loop coils arranged at regular intervals on the ground are arranged at different positions, position signals of the same frequency are sent from each loop coil, and each loop coil is received by one receiving coil on the car top. The position signal from is detected. In this way, a large number of loop coils, which are signal sources arranged on the ground, are arranged to enhance the detection accuracy of the traveling position of the train and control the speed.

[0005]

As described above, conventionally, since the pattern composed of a large number of loop coils is arranged along the traveling path of the vehicle, it is not easy to install the pattern. . In addition, since the position signals are sent from each pattern, the ground equipment becomes complicated and large, resulting in a high price. Furthermore, if the loop coil interval is narrow, induction is likely to occur between the loop coils, making it difficult to detect the vehicle position with high accuracy.

Further, although the position where the train is stopped differs depending on the train set, it is desired to control the stop position of the train having a different set with higher accuracy.

The present invention has been made in response to such a demand, and an object thereof is to obtain a fixed position stop control device capable of controlling the stop position of a train with a simple structure and with higher accuracy.

[0008]

In the fixed position stop control device according to the present invention, an on-vehicle device has a vehicle signal transmitting device, an information transmitting / receiving device and an automatic driving control device, and a ground device is an information transmitting loop. And a pattern belt, a receiver, a logic unit, a vehicle position tracking unit, and an information transmission device, the vehicle signal transmission device has an oscillator and an antenna, and the oscillator generates signals of a plurality of different types of frequencies to the antenna. The transmitting antenna has a plurality of transmitting coils, each transmitting coil is arranged at regular intervals D along the traveling direction of the vehicle, has a size w smaller than the interval D, and transmits vehicle signals of different frequencies as described above. Information is transmitted to the pattern belt, the information transmission loop is arranged along the traveling direction of the vehicle, exchanges various information with the vehicle, and the pattern belt is arranged in parallel along the traveling direction of the vehicle. -Pucoil and simple A loop coil, the cross loop coils are arranged to intersect each other at a constant distance L, the single loop coil is formed by a continuous single loop, and the receiver is a filter and a phase detector. The filter includes a cross loop coil and a single loop coil, and the filter separates signals of different frequencies from the received signals sent from the cross loop coil and the single loop coil, respectively, and the phase detector detects the cross loop coil and loop coil. It detects the phase change of the received signal sent from the cross loop loop coil and outputs the positive signal when the received signal sent from the loop coil is in the same phase, and outputs the negative signal when the phases are different, The conversion unit outputs a pulse signal corresponding to the positive and negative signals sent from the phase detection unit, and the logic unit logically operates the pulse signal sent from the receiver for each frequency to obtain the distance (D-
A vehicle position signal is generated for each L), the vehicle position tracking unit tracks the vehicle position signal to create vehicle position data and speed data, and the speed data for each created vehicle position data is generated. The brake command data is created on the basis of the data and the speed predetermined for each vehicle position on the pattern belt, and the information transmission device transmits the created brake command data to the information transmission route. -Brake command data sent from the ground is sent to the automatic operation control device by the information transmission / reception device on the vehicle, and the automatic operation control device sends the brake command. The feature is that the speed is controlled by data.

[0009]

According to the present invention, vehicle position signals having a plurality of different frequencies are generated from a traveling vehicle and transmitted to the ground via an antenna having a plurality of transmitter coils of size w arranged at intervals D. The pattern installed on the ground
It is received by the two-layer loop coil of Humberto. The cross loop coil of the pattern belt changes the phase of the received signal by a certain distance L.
Each of them is inverted and output, and the other single loop coil outputs the received signal as it is. The reception signal sent from the cross loop coil and the single loop coil is sent to the receiver. The receiver sorts the signals of the plural kinds of frequencies sent, detects the phase change of the received signals sent from the cross loop coil and the single loop coil for each frequency, and crosses the cross loop loop.
A positive signal is output when the received signals sent from the loop coil and the single loop coil have the same phase, and a negative signal is output when the phases of the received signals sent from the cross loop coil and the single loop coil are different. Output. The logic unit logically operates a signal sent from the receiver for each frequency to generate a vehicle position signal for each distance (DL). The vehicle position tracking unit tracks the position signal of the vehicle to calculate the position and speed of the vehicle, and based on the calculated actual speed of the vehicle and the speed previously determined for each vehicle position on the pattern belt. Command data is created and a brake command is sent to the train via the information transmission device. The automatic driving control device on the vehicle controls the braking device by the transmitted braking command to stop the vehicle at a fixed position.

[0010]

1 and 2 are block diagrams showing the structure of an embodiment of the present invention. FIG. 1 shows an on-board device and FIG. 2 shows a ground device. The on-board device 2 mounted on the vehicle 1 is shown in FIG.
As shown in, the vehicle signal transmitting device 3 and the information transmitting / receiving device 4
It has an automatic driving control device 5 and an information transmission antenna 6. The vehicle signal transmitter 3 has different frequencies f ₁ , f ₂ , f ₃
It has oscillators 7a to 7c for generating the signal and an antenna 8. The antenna 8 has three transmission coils 8a to 8c. The three transmission coils 8a to 8c are arranged at intervals of D = 200 mm along the traveling direction of the vehicle, and the size w = 90 mm.
And each transmission coil 8a-8c has an oscillator 7a.
~ 7c. Then, the transmission coil 8a transmits a vehicle signal having a frequency f ₁ to the ground, the transmission coil 8b transmits a vehicle signal having a frequency f ₂ to the ground, and a transmission coil number 8c
Transmits a vehicle signal of frequency f ₃ to the ground.

The information transmission / reception device 4 includes an information transmission antenna 6
The monitor information and the like are transmitted to the ground via, and the control command transmitted from the ground is received and transmitted to the automatic driving control device 5. The automatic driving control device 5 controls driving operations such as speed control and stop of the vehicle 1.

As shown in FIG. 2, the ground device 9 includes an information transmission loop 10, a pattern belt 11, a receiver 12, a logic unit 13, a vehicle position tracking unit 14, an information transmission device 15, and a traveling direction discriminating unit. 16, failure detection unit 17 and automatic train control device 1
8 and.

The information transmission loop 10 is arranged along the traveling direction of the vehicle 1 and exchanges various information with the information transmission antenna 6 on the vehicle. The pattern belt 11 has two layers of loops, a cross loop coil 11a and a single loop coil 11b, which are arranged in parallel along the traveling direction of the vehicle 1 near the stop point. receiving a signal of a frequency f _1, f _2, f ₃ transmitted from the transmitting coil 8a~8c of. The cross loop coils 11a are arranged so as to cross each other at a distance L = 150 mm, and the single loop coil 11b is formed by a continuous single loop.

The receiver 12 has six filters 19a to 19a.
It has f, three phase detectors 20a to 20c, and three signal converters 21a to 21c. Filters 19a, 19
c and 19e are connected to the cross loop coil 11a, and the filters 19b, 19d and 19f are the single loop coil 11b.
It is connected to the. Then, the filters 19a and 19b pass only the signal of the frequency f ₁ and block the signals of other frequencies, and the filters 19c and 19d pass only the signal of the frequency f ₂ and block the signals of other frequencies. 19e,
19f passes only a signal of a frequency f _3, blocks the signals of other frequencies. The phase detector 20a includes a filter 19a,
19b compares the phase of the received signal of frequency f ₁ sent from 19b, and the signal sent from the filter 19a and the filter 19b.
Signal sent from the outputs of the positive signal of the frequency 2f ₁ when the same phase, when the phase difference 180 degrees frequency 2f ₁
Outputs the negative signal of. Similarly, the phase detectors 20b and 20c also have filters 19c and 19e and a filter 19 respectively.
The phases of the received signals sent from d and 19f are compared. When the signals sent from the filters 19c and 19e and the filters 19d and 19f have the same phase, positive signals of frequencies 2f ₂ and 2f ₃ are output and the phases are 180 When the frequency is different, the frequency is 2f ₂ ,
It outputs a negative signal of 2f ₃ . Signal converters 21a-21
c outputs a pulse signal that goes high when a positive signal is sent from each of the phase detectors 20a to 20c and goes low when a negative signal is sent.

The logic unit 13 includes the signal conversion units 21a to 21c.
The pulse signal output from the vehicle is logically operated to generate the position signal of the vehicle 1. The vehicle position tracking unit 14 sequentially tracks the position signal of the vehicle 1 sent from the logic unit 13 to detect the vehicle position.
Data and speed data are created, and a brake command data is created based on the created speed data for each vehicle position data and the speed predetermined for each vehicle position on the pattern belt 11.
Create the data. The information transmission device 15 includes a vehicle position tracking unit 14
The brake command data sent from the information transmission loop 10
The monitor information and the like sent from the vehicle is sent to the automatic train control device 18.

The traveling direction discriminating unit 16 includes signal converting units 21a to 21a.
21c, the order of the pulse signals respectively output is determined, the traveling direction of the vehicle 1 is detected, and it is sent to the vehicle position tracking unit 14. The failure detection unit 17 determines whether or not the pulse signals output from the signal conversion units 21a to 21c are missing,
Whether or not a failure has occurred in the vehicle position signal transmission device 3 on the vehicle, the pattern belt 11 and the receiver 12 on the ground and the failure point are determined, and the result is sent to the automatic train control device 18.

The operation of stopping the vehicle 1 at a fixed position by detecting the position of the traveling vehicle 1 by the fixed position stop control device configured as described above and performing the brake control is shown in FIG. This will be described with reference to the waveform chart of FIG.

When the vehicle 1 enters the position of the pattern belt 11, the signal of the frequency f ₁ transmitted from the transmitting coil 8a of the antenna 8 mounted on the vehicle 1 is crossed by the cross loop coil 11a of the pattern belt 11. And a single loop coil 1
1b, and sends to the filters 19a to 19f of the receiver 12. Since the crossing loop coils 11a for receiving the signal from the vehicle 1 are arranged so as to cross each other at a distance L = 150 mm, the phase of the received signal is obtained at every distance L = 150 mm as shown in FIG. 3 (a). Is inverted and output. On the other hand, a single rule
Since the coil 11b is formed by a continuous single loop, it continuously outputs the received signal whose phase does not change as shown in FIG. 3 (b).

The signals of frequency f ₁ are respectively filtered from the cross loop coil 11a and the single loop coil 11b by the filter 19.
a to 19f, the filters 19a and 19b pass only the signal of frequency f ₁ and send it to the phase detector 20a. The phase detector 20a compares the signal sent from the filter 19a with the signal sent from the filter 19b, and
When the signal sent from the filter 19a and the signal sent from the filter 19b have the same phase as shown in (c),
Outputting a positive signal of the frequency 2f _1, when the phases of the two signals are different 180 degrees sends the signal conversion unit 21a outputs a negative signal of frequency 2f _1. When the signal converter 21a positive signal of frequency 2f ₁ is sent, as shown in FIG. 3 (d), goes high, the output pulse signal and the negative signal of frequency 2f ₁ is sent to a low level To do. This distance L = 150m
A pulse signal that changes every m is sent to the logic unit 13, the traveling direction determination unit 16, and the failure detection unit 17.

The frequency f ₂ , which is transmitted from the transmission coils 8b and 8c of the antenna 8 mounted on the vehicle 1,
The signal of f ₃ is applied to the cross loop coil 1 of the pattern belt 11.
1a a single Le - Pukoiru also received at 11b, the and only passes the signal of frequency f ₂ in the filter 19c, 19d similarly, filter 19e, respectively through only a signal of a frequency f ₃ at 19f phase It is sent to the detection units 20b and 20c. Phase detecting unit 20b, 20c in cross Le - Pukoiru 11a and a single Le - Pukoiru frequency 2f _2, 2f ₃ depending on the phase of the received signal 11b positive, the signal conversion unit 21b converts the negative signal, 21c Send to. The signal converter 21b,
21c converts into a pulse signal according to the positive and negative signals of the frequencies 2f ₂ and 2f ₃ sent and outputs it.

The pulse signals output from each of the signal converters 21a to 21c are sent to the antenna 8 mounted on the vehicle 1.
Since the transmission coils 8a to 8c are arranged with the size w = 90 mm and the interval D = 200 mm, the frequency f ₁ transmitted from the transmission coil 8a is set as shown in FIG.
Output signal S (f ₁₎ output signal of the signal by the signal conversion unit 21b of the frequency f ₂ that is transmitted from the transmitting coil 8b with respect to S of the signal by the signal converting unit 21a (f ₂₎ is the distance D = 2
It is output with a delay of 00 mm. Similarly, the transmission coil 8b
Signal conversion unit 2 based on the signal of frequency f ₂ transmitted from
1b of the output signal S (f ₂₎ output signal of the signal by the signal conversion unit 21c of the frequency f ₃ that is transmitted from the transmitting coil 8c against S (f ₂₎ is output with a delay by a distance D = 200 mm.

Therefore, the logic unit 13 outputs the frequencies f ₁ , f ₂ ,
The pulse signals S (f ₁ ), S (f ₂ ), and S (f ₃ ) sent from the signal converters 21 a to 21 c corresponding to the signal of f ₃ are logically operated, and as shown in FIG. , Signal converters 21a-2
1c pulse signals S (f ₁ ), S (f ₂ ), S
A pulse signal S which becomes high level when any two signals of (f ₃ ) is high level and which becomes low level in other cases is generated as a position signal. The pulse signals S (f ₁ ), S (f ₂ ), and S (f ₃ ) for generating the pulse signal S have a high level width and a low level width of L = 150 mm.
Since (f ₁ ), S (f ₂ ), and S (f ₃ ) have a delay of D = 200 mm, the pulse signal S has a pulse width W = (D−L) = 50 mm and a repetition cycle T = 100 mm. become. Therefore, when the signals of the frequencies f ₁ , f ₂ , and f ₃ transmitted from the transmission coils 8a to 8c of the antenna 8 are sequentially received and the pulse signal S is generated as a position signal, the vehicle 1 traveling every distance W = 50 mm. The position of can be detected. Therefore, the traveling position of the vehicle 1 can be detected with high accuracy on the ground.

The vehicle position tracking unit 14 sequentially tracks the position data of the vehicle 1 detected by the logic unit 13 and calculates the position and speed of the vehicle 1 with respect to the stop point. Then, the calculated actual speed for each position of the vehicle 1 and the pattern belt 11 are set in advance.
Based on the speed determined for each vehicle position above,
Command data is created and sent to the information transmission means 15. The information transmission means 15 transmits the transmitted brake command data to the on-vehicle via the information transmission loop 10 and also to the automatic train control device 18.

The information transmission / reception device 4 on the vehicle sequentially receives the brake command data transmitted from the information transmission loop 10 via the information transmission antenna 6 and sends it to the automatic driving control device 5.

The automatic driving control device 5 controls driving operations such as speed control and stop by the transmitted brake command data to stop the vehicle 1 at a predetermined position. Since the actual traveling position and speed of the traveling vehicle 1 are detected and the brake command is sent out, the speed control of the vehicle 1 can be accurately performed, and the vehicle 1 can be accurately moved to a predetermined position. It can be stopped.

Further, while the traveling position of the vehicle 1 is being detected in this way, the traveling direction discriminating section 16 has the signal converting section 21.
Each pulse signal S output from a to 21c
(f ₁ ), S (f ₂ ), S (f ₃ ) are sequentially input, and the pulse signal S
From the transition state of (f ₁ ), S (f ₂ ), S (f ₃ ), the pulse signal S
The order of (f ₁ ), S (f ₂ ), and S (f ₃ ) is determined, the traveling direction of the vehicle 1 is detected, and the detected position is sent to the vehicle position tracking unit 14. Therefore, the vehicle position tracking unit 14 can also confirm the traveling direction of the vehicle 1.

Further, the failure detecting section 17 includes a signal converting section 21a.
Pulse signals S (f ₁ ), which are respectively output from
Whether or not S (f ₂ ) and S (f ₃ ) are missing is constantly determined. Then, for example, when an abnormality occurs in part of the pulse signal S (f ₂ ), it is determined that an abnormality has occurred in the system of the signal conversion unit 21b of the receiver 12 of the ground device 9. Then, when an abnormality occurs in either the on-board device 2 or the ground device, the failure detection unit 17 notifies the automatic train control device 18 of the failure of the device and the location of the failure. An alarm is issued and the location of the failure is displayed. Therefore, even if a failure occurs in the device, the cause of the failure can be easily determined.

[0028]

As described above, the present invention is mounted on a traveling vehicle, arranged at intervals D, and has a size w.
Transmit signals of different frequencies from multiple transmitter coils of
A plurality of types of frequencies output by the cross loop coil and the loop coil, which are received by the cross loop coil that inverts the phase of the received signal for each constant distance L and outputs the same, and the loop coil that outputs the received signal as it is. Since the position of the vehicle is detected by the change in the phase of the signal of, the position of the traveling vehicle is determined by (D-
L) units can be detected, and the actual position and speed of the traveling vehicle can be detected with high accuracy.

Further, since the speed of the vehicle is controlled based on the actually detected position and speed of the vehicle, the stop position of the vehicle can be controlled with high accuracy.

Further, since the pattern belt installed on the ground may be provided with a two-layer loop coil, mutual induction in the pattern belt can be reduced and the actual position of the vehicle can be detected stably. In addition, the ground facilities can be simplified.

Further, the traveling direction of the vehicle can be automatically detected on the ground by detecting the transition state of the output signal of the receiver by the signals of plural kinds of frequencies for detecting the position of the vehicle, It is possible to reliably confirm the safety of vehicle operation.

Further, since it is possible to automatically detect a device failure or a failure point by detecting the absence or absence of a plurality of types of signals output from the receiver, even if the device should fail. The cause of the failure can be easily determined.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an on-vehicle device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a ground device of the above embodiment.

FIG. 3 is a waveform diagram showing the operation principle of the above embodiment.

FIG. 4 is a waveform diagram showing the operation of the above embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 vehicle 2 vehicle equipment 3 vehicle signal transmission device 4 information transmission / reception device 5 automatic operation control device 6 information transmission antennas 7a to 7c oscillator 8 antennas 8a to 8c transmission coil 9 ground device 10 information transmission loop 11 pattern belt 11a Cross loop coil 11b Single loop coil 12 Receiver 13 Logic part 14 Vehicle position tracking part 15 Information transmission device 16 Running direction determination part 17 Failure detection part 18 Automatic train control device 19a-19f Filter 20a-20c Phase detection part 21a ~ 21c Signal converter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeru Ito 1 Nishinobuchi, Oita-shi, Oita-shi, Nippon Steel Co., Ltd. Oita Works (72) Inventor Kiwa Oita-shi, Oita Nishinobuchi, Oita-shi No. 1 Nippon Steel Co., Ltd. Oita Steel Co., Ltd. (72) Inventor Nobuhiro Ishii 1 Kyosan Co., Ltd. 2-29, Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa (72) Inventor Muneaki Yamashita Yokohama-shi, Kanagawa 2-29, Heian-cho, Tsurumi-ku 1 Kyosan Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. The on-board device includes a vehicle signal transmitting device, an information transmitting / receiving device, and an automatic driving control device, and the ground device includes an information transmitting loop, a pattern belt, a receiver, a logic unit, and a vehicle position tracking unit. And the information transmission device, the vehicle signal transmission device has an oscillator and an antenna, the oscillator generates signals of a plurality of different frequencies and sends them to the antenna, and the antenna has a plurality of transmission coils, and each transmission coil Are arranged at regular intervals D along the traveling direction of the vehicle,
The vehicle has a size w smaller than the interval D and transmits vehicle signals of different frequencies to the pattern belt. An information transmission loop is arranged along the traveling direction of the vehicle to exchange various information with the vehicle. The pattern belt has a cross loop coil and a single loop coil which are arranged in parallel along the traveling direction of the vehicle, and the cross loop coils are arranged so as to cross each other at a constant distance L. The loop coil is formed by a continuous single loop, the receiver has a filter, a phase detector and a signal converter, and the filter is a received signal sent from the cross loop coil and the single loop coil. The signals of different frequencies are respectively selected and passed, and the phase detector detects the phase change of the reception signal sent from the cross loop coil and the loop coil, and the reception signal sent from the cross loop coil and the loop coil is detected. Same rank , A positive signal is output when the phases are different, a negative signal is output when the phases are different, the signal conversion unit outputs a pulse signal according to the positive and negative signals sent from the phase detection unit, and the logic unit is a receiver. The pulse signal sent from each frequency is logically operated to generate a vehicle position signal for each distance (DL). The vehicle position tracking unit tracks the vehicle position signal to detect vehicle position data and speed data. -Create a brake command data based on the created speed data for each vehicle position data and the speed that is previously determined for each vehicle position on the pattern belt. The transmitter transmits the created brake command data to the vehicle via the information transmission loop, and the information transmitter / receiver on the vehicle automatically operates the brake command data sent from the ground. To the control unit, and the automatic operation control unit controls the speed with the transmitted brake command data. Fixed-position stop control apparatus, characterized by.