JP4132534B2 - Automatic train control equipment ground equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ground device (hereinafter referred to as an ATC ground device) of an automatic train control device for controlling a train to travel at a safe operation speed on a railway line composed of a plurality of track circuits.
[0002]
[Prior art]
Conventionally, A TC Oite the ground equipment, receivers from each track circuit of railway lines to receive the ATC signal S1 for train control (hereinafter, referred to as ATC receiver) are known.
[0003]
According to this ATC receiver, while detecting whether or not a train is on each track circuit, the train speed is automatically controlled below the speed limit based on the position of the preceding train on the route. Each train can be operated safely.
[0004]
FIG. 5 is a block diagram of one specific example of an ATC receiver.
The ATC receiver 110 includes a reception input unit 120 for inputting an ATC signal S1 that is a train control signal from a track circuit (not shown), and a reception processing unit 130 for the introduced ATC signal S1. The reception input unit 120 has a configuration in which a transformer TF for reception input, an attenuator 121 for giving attenuation to the reception level, and a bandpass filter BPF1 mainly for noise removal are provided in this order.
[0005]
The reception processing unit 130 also converts an A / D converter 131 that converts the BPF output signal S121 of the bandpass filter BPF1 into a digital signal, a software attenuator 132 using a digital signal processor, and another signal component S131 for extracting a required signal component S131. This is a configuration in which a band pass filter BPF2 and an MSK demodulating unit 134 using an MSK (Minimum Sift Keying) method are sequentially provided.
[0006]
The software attenuator 132 is also provided with a correction control unit 139 that automatically corrects the attenuation amount.
[0007]
According to the ATC receiver 110, the ATC signal S1 is introduced from each track circuit through the transformer TF, the attenuator 121, and the bandpass filter BPF1, and after being converted into a digital signal, the software attenuator 132 performs a certain amount of attenuation. Let Further, in order to keep the reception level of the signal component S131 extracted by another bandpass filter BPF2 constant, the attenuation amount of the software attenuator 132 is adjusted by the correction control unit 139 while monitoring this reception level, and the level of the signal component S131 is detected. Follow-up can be performed.
[0008]
Then, the signal component S131 is demodulated into the train control information S132 by the MSK demodulator 134 and introduced into the determination processing unit 140 together with the signal component S131 itself. The determination processing unit 140 decodes the telegram included in the control information S132 while comparing the reception level of the signal component S131 with a predetermined reference value, and determines the presence of the train in the corresponding track circuit.
[0009]
[Problems to be solved by the invention]
However, the conventional ATC receiver has the following problems. If this level tracking function is to be provided for all track circuits on a single railway line, all of the individual ATC receivers of each track circuit must be provided with a level tracking function. For this reason, the apparatus cost, installation, and maintenance cost of the ATC ground apparatus as a whole are increased. Furthermore, in order to prevent incorrect level tracking when the level changes due to trains, a separate train tracking device is required, and the time and labor required to monitor the normality of each level tracking separately is also required. Become. The solution of these problems collectively was an important technical issue.
[0010]
An object of the present invention, the ground of the automatic train control system which can in each track circuit while centralize reception level of the train control signal, performs a stable train detection with held constant each received level from a remote location To provide an apparatus.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, a ground device of an automatic train control device according to the present invention includes a plurality of track circuit transmitting / receiving means for receiving a train control signal from each of a plurality of track circuits provided along a railway line, and the train A train control management means for performing train detection in each of the plurality of track circuits based on the result of determining the reception level of the control signal, and a ground device for the automatic train control device , wherein the track circuit transmission / reception means includes the track circuit and attenuated means Ru attenuates the received level of train control signal received from a Relais bell measuring means to measure the reception level after being attenuated by the attenuation means, the rail determination of a train traveling on the railway line a reception determination means for performing the measurement result by the level measuring means receiving level information, organize each determination result by the reception determination means Zaisen information, the reception level information and Zaisenjo Anda first transmitting means for transmitting through the communication network and train control management means, the reception level variation measuring means for measuring the amount of change in the reception level based on the reception level information, rail information and trains tracking means for tracking the location of the train on the basis of a reference value storage means for storing a reference value of the reception level, based on the change amount and the reference value of the received level information, any respect to the train control signal a correction value determining means which determines the amount of attenuation, a second transmission means for transmitting the attenuation amount determined by the correction value determination means to each of a plurality of damping means through to communications network organized in attenuation amount information, And the correction value determining means determines the amount of attenuation so that the reception level becomes the reference value, and then does not result in the presence of the train based on the tracking result by the train tracking means, and the leakage conductance of the track circuit Received by fluctuation When the level is determined to have decreased or increased, and determines the amount of attenuation so as to follow correct the reception level constant at all times with reference values.
[0012]
According to the ground device of this automatic train control device, the reception level of the train control signal is measured by the level measuring means, and the presence determination of the train traveling on the railway line is performed by the reception determining means. The reception level information and Zaisen information in each track circuit based on the measurement result is transmitted to the train control management unit, while monitoring the reception level of each orbit circuits by the train control management means to track the location of the train, train not due to rail, when the reception level is judged to have decreased or increased by the variation of the leakage conductance of the track circuit transmits the attenuation amount information to keep the reception level constant in each of the plurality of damping means, remote It is possible to indicate an attenuation amount that has been corrected to follow the transmission characteristics of a plurality of track circuits by an operation.
[0013]
That reception level information is received by the train control management hand stage, lowering of the reception level while automatically adjusting the attenuation of each of the plurality of damping means by the correction value determining means, the rise can be prevented.
[0014]
In the ground device of the automatic train control device according to claim 2 of the present invention, the train control management means monitors the reception level information of each of the plurality of track circuits, and the reception level measurement result is a predetermined amount within a predetermined time. It is characterized by having a warning means for issuing a warning to the administrator when the pressure is lowered or raised.
According to this, the administrator is informed of the decrease or increase of the predetermined amount in the reception level by the alarm means, and the administrator can adjust the attenuation amount of each attenuation means as necessary.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a diagram for explaining a configuration example of an ATC ground device according to an embodiment of the present invention.
This ATC ground device (ground device of an automatic train control device) 100 includes track circuit transmitting / receiving units 10a, 10b, 10c,... Including ATC transmitters 20 and ATC receivers 30 provided for each track circuit R1, R2, R3. ATC management device that receives the local area network LAN attached to the railway line and the reception level information S3 in each track circuit transmission / reception unit and transmits the attenuation amount information S4 and manages the reception level of the ATC signal S1, etc. 200.
[0016]
The ATC signal S1 is introduced from each track circuit R0, R1, R2, R3, and is a train detection signal for detecting the presence of the train C in the track circuit R1, for example. Hereinafter, the case of the track circuit R1 will be mainly described. In this case, the signal is obtained from the ATC signal S2 sent from the ATC transmitter 20 of the track circuit transmitting / receiving unit 10b.
[0017]
The train C may be a vehicle that is operated on the track circuits R0, R1, R2, and R3 along the fixed operation route and operated by the ATC information S3 described above. As described. The ATC ground device according to the present invention includes the ATC receiver 30, the LAN, and the ATC management device 200.
[0018]
FIG. 2 is a block diagram of a specific example of the track circuit transmitting / receiving unit and the ATC management apparatus shown in FIG.
The track circuit transceiver 10 includes an ATC transmitter 20 that sends an ATC signal S2 to the track circuit R1, an ATC receiver 30 that receives the ATC signal S2 from the track circuit R1, and a train C in another track circuit on the route. A transmission control unit 40 is provided for transmitting the position information and the like.
[0019]
The ATC transmitter 20 introduces the detection information of the train C such as each track circuit R0 from the transmission control unit 40, and from this, the ATC information organization unit 21 which organizes the ATC signal S1 of the track circuit R0 into a digital signal, For example, it has an MSK modulator 22 for modulating the ATC signal S1 by, for example, an MSK (Minimum Shift Keying) system, and an amplifier 23 for amplifying the modulated output.
[0020]
The ATC receiver 30 includes a reception input unit 31 that receives the ATC signal S1 from each track circuit R0, and a reception processing unit 32 that performs reception determination of ATC information while correcting the reception level of the ATC signal S1.
[0021]
The ATC management apparatus 200 includes a LAN transmission control unit 210, a logical operation unit 220 that calculates and calculates attenuation amount information S4 with respect to the reception level, a display unit 230 for alarm display, and the like. And an operation unit 240 for manually setting the amount.
[0022]
The logical operation unit 220 includes a reception level change amount measuring unit 221 that measures a change amount of the reception level, a reference value unit 222 that stores a reference value of the reception level, and a comparison that compares the change amount of the reception level with the reference value. Unit 223, a train tracking unit 224 that tracks the current traveling position of the train based on the train position information, the amount of change in the reception level in each track circuit R0, R1, R2, R3 is determined based on the tracking result, A determination unit 225 that does not cause an erroneous follow-up correction due to a level change, a correction amount calculation unit 226 that calculates a correction amount of a reception level based on the amount of change obtained by determination, and a correction value for determining the above-described software attenuator 132 A correction value determination unit 227 is included.
[0023]
FIG. 3 is a block diagram of a specific example of the ATC receiver shown in FIG.
The ATC receiver 10 receives and inputs the ATC signal S1, and decodes the reception input unit 20 described above, the reception processing unit 30 of the obtained BPF output signal S21, and the ATC information S32 obtained by processing. And a determination processing unit 40 that measures the reception level of the signal component S31 in the BPF output signal S21.
[0024]
The reception processing unit 30 receives an analog-to-digital converter 31 of the BPF output signal S31, a software attenuator 32 based on the converted digital signal, a bandpass filter BPF2 composed of a digital filter for separating the signal component S31, and ATC information S32 from the signal component S31. It has an MSK demodulator 34 that demodulates using the MSK method. The software attenuator 32 is provided with a SATT control unit 39 that controls the attenuation amount of the software attenuator 32.
[0025]
In the determination processing unit 40, the reception level of the signal component S31 of the message component S31 of the band-pass filter BPF2 is collated with another reference value, in which the message of the train control signal is decoded from the ATC information S32 by the MSK demodulation unit 34. Level detection unit 42, reception determination unit 43 that checks the correctness of the decoded message together with the detection result of level detection unit 42, and determines the presence of the train, and transmission management unit that organizes these determination results into a communication message of a predetermined format 44, a LAN transmission control unit 45 which is a LAN interface.
[0026]
FIG. 4 is a diagram for explaining the operation of the level tracking function in FIG.
For example, if an attempt is made to secure a detection compensation amount M1 of about 10 dB with respect to the minimum operation level L0, an attenuation amount L39 of 4 dB, for example, is required for the BPF output signal S31. The attenuation amount L39 is transferred to the SATT control unit 39 of the reception processing unit 30 and set as an initial value in the software attenuator 32.
[0027]
As a result, the level of the BPF output signal S31 is attenuated by 4 dB. Subsequently, when the level of the BPF output signal S3 decreases as the level of the ATC signal S1 decreases, the attenuation amount L39 of 3 dB is set in the attenuator 32 by the level tracking function of the SATT control unit 39. For this reason, the level of the BPF output signal S31 increases by 1 dB. Thereafter, as long as 2 dB, 1 dB, and 0 dB are set in the attenuator 32 as shown in the figure, the detection compensation amount M1 of about 10 dB can be maintained.
[0028]
When the level of the BPF output signal S31 is restored, the 0 dB attenuation L39 of the attenuator 32 is updated to the new attenuation L39 of 1 dB, 2 dB, and 3 dB. For this reason, the level of the BPF output signal S31 rises with 1 dB as an update unit for each update accompanying level tracking. As long as this is the case, the BPF output signal S31 can maintain the detection compensation amount M1 of approximately 10 dB.
[0029]
The present invention can be applied not only to the track circuit receiver of the ATC ground device, but also to the receiver of the train detection device using an AF (audio frequency) track circuit.
[0030]
【The invention's effect】
As described above, according to the present invention, the amount of attenuation with respect to the reception level of the train control signal in each track circuit is adjusted by remote control. It is possible to provide a ground device for an automatic train control device in which the reception level is kept constant.
In addition , since the reception level can be prevented from decreasing and rising while automatically adjusting the attenuation amount of each attenuation means, automatic centralized management can be realized. Further, according to the apparatus of the second aspect of the present invention, the alarm means notifies the administrator of a decrease or increase of the predetermined amount in the reception level, and the administrator can adjust the attenuation amount of each attenuation means as necessary. Therefore, it can be managed manually.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining a configuration example of an ATC ground device according to an embodiment of the present invention. FIG. 2 is a block diagram of a specific example of a track circuit transmitting / receiving unit and an ATC management device shown in FIG. 1 is a block diagram of a specific example of the ATC receiver shown in FIG. 1. FIG. 4 is a diagram for explaining the operation of the level tracking function in FIG. 3. FIG. 5 is a block diagram of an ATC receiver according to a conventional example. ]
10a, 10b, 10c, 10d ... Track circuit transmission / reception unit, 20 ... ATC transmitter, 30 ... ATC receiver, 40 ... Transmission control unit, 100 ... ATC ground device, 200 ... ATC management device, C ... Train , LAN ... local area network, R0, R1, R2, R3 ... track circuit, S1, S2 ... ATC signal, S21 ... BPF output signal, S31 ... signal component.

Claims (2)

A plurality of track circuit transmission / reception means for receiving train control signals from each of a plurality of track circuits provided along the railway line, and a result of determining the reception level of the train control signals, in each of the plurality of track circuits A train control management means for performing train detection , and an automatic train control device ground device,
The track circuit transmitting / receiving means includes
And attenuated means Ru attenuates the reception level of the train control signal received from the track circuit,
And Relais Bell measuring means to measure the reception level after being attenuated by said attenuating means,
Reception determination means for determining the presence of a train traveling on the railway line;
The receiving level information measurement result by the level measuring means, the determination result by the reception determination unit respectively organized Zaisen information, first transmission means for transmitting through the communication network the received level information and Zaisen Information And having
The train control management means includes
A reception level change amount measuring means for measuring a change amount of the reception level based on the reception level information;
Train tracking means for tracking the position of the train based on the presence line information;
Reference value storage means for storing a reference value of the reception level;
On the basis of the amount of change of the reception level and said reference value, a correction value determining means for determining any attenuation with respect to the train control signal,
And a second transmission means for transmitting the attenuation amount determined in each of a plurality of said damping means through to communications network organized in attenuation amount information by said correction value determining means,
The correction value determining means determines the attenuation amount so that the reception level becomes the reference value, and then does not result in the presence of a train on the basis of the tracking result by the train tracking means, When it is determined that the reception level has decreased or increased due to a variation in leakage conductance, the automatic train control is characterized in that the attenuation is determined so that the reception level is always tracked and corrected with the reference value. Equipment ground equipment. The train control management means is
While monitoring the reception level information of each of the plurality of the track circuit, in that the measurement result of the reception level had an alarm means for issuing an alarm to the administrator when the decrease or increase by a predetermined amount within a predetermined time ground device of the automatic train control system according to claim 1 Symbol mounting features.

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