JP4666506B2 - Train sorting device - Google Patents

Description

  The present invention relates to a train sorting apparatus for sorting train types and using the sorted conditions for railroad crossing control, station guidance broadcasting, route control, and the like.

For example, in order to make the warning time of a level crossing uniform, as shown in Patent Document 1, for example, the type of train approaching the level crossing is selected, and the alarm start time of the level crossing is automatically changed according to the selected train type. ing. For example, Patent Literature 2 discloses a train sorting device that automatically sorts the types of trains. As shown in FIG. 4, the ground device of this train sorting device has an oscillation circuit composed of a train sorting ground element 4 having a primary coil 8 and a secondary coil 9 and an amplifier circuit 51, and an output side of the oscillation circuit. A plurality of filters 52a to 52d, amplifier circuits 53a to 53d, rectifier circuits 54a to 54d, and relays R1 to R4 have a reception frequency channel corresponding to the resonance frequency, and the train has a frequency signal corresponding to the train type. It has a train selection vehicle upper 3 provided with a coil and a capacitor for transmission. The oscillation circuit having the train sorting ground element 4 normally stops oscillating and is close to the frequency of the train sorting vehicle upper element 3 when the train sorting vehicle upper element 3 mounted on the train passes. Oscillate at frequency to select trains. For example, when the train sorting vehicle upper 3 transmits a signal of the frequency f2, the coil of the relay R2 of the frequency f2 is energized, and the coils of the other relays R1, R3, R4 are de-energized, and the frequency The information according to f2 is output and the type of train is selected.
JP-A-6-255492 Japanese Patent Publication No.46-35324

  Since the oscillation circuit having the train sorting ground element 4 of the train sorting apparatus normally stops oscillating, it is not possible to detect a failure of the train sorting ground element 4, cable disconnection, equipment failure, or the like. Or, even if the train sorting vehicle upper 3 passes, failure diagnosis cannot be performed.

  In order to be able to diagnose the failure of the oscillation circuit having the train sorting ground element 4, if the oscillation circuit having the train sorting ground element 4 is caused to oscillate at all times in the same manner as the ATS on-board device, the ATS vehicle The upper device is interfered and malfunctions, and it is difficult to always oscillate.

  An object of the present invention is to provide a train sorting device that can improve such disadvantages and reliably detect a failure and prevent interference with an ATS on-board device.

The train sorting device of the present invention has a train sorting ground element and a train sorting unit, the train sorting ground element has a primary coil and a secondary coil, and has a frequency indicating a train type transmitted from the train. The train selection unit has a transmission unit, a reception unit, and an arithmetic processing unit, and the transmission unit outputs an intermittent wave signal having the same frequency as a plurality of frequencies indicating the train type to the primary coil of the train selection ground unit. The receiving unit has a first signal processing unit and a second signal processing unit, and the first signal processing unit is the primary coil that is output from the secondary coil of the train sorting ground unit. Multiplying the transmitted intermittent signal of multiple frequencies and the received signal of the frequency signal indicating the train type transmitted from the train by the intermittent signal generated by the transmitter, and extracting the DC component into a digital signal Convert and output to the arithmetic processing unit, the second signal processing unit for train selection Intermittent wave signal generated by the reception signal and the transmission of the frequency of the signal indicating the train type transmitted from intermittent wave signal and a train of a plurality of frequencies transmitted by the primary coil and outputs from the secondary coil of the upper child Multiply the signal whose phase is shifted by 90 degrees, extract the DC component, convert it to a digital signal, and output it to the arithmetic processing unit. The arithmetic processing unit is connected to the first signal processing unit and the second signal processing unit. The train is selected based on the input signal.

  It is desirable that the secondary coil of the train sorting ground unit has a continuous wave transmission unit that outputs a continuous wave signal in a frequency band of a constant oscillation frequency used in the ATS on-board device.

Also, the continuous wave signal received by the primary coil of the train sorting ground unit is multiplied by the continuous wave signal generated by the continuous wave transmitter, and the DC component is extracted and converted to a digital signal. Multiplying the third signal processing unit, the reception signal of the continuous wave signal received by the primary coil of the train sorting ground element and the signal obtained by shifting the phase of the continuous wave signal generated by the continuous wave transmission unit by 90 degrees, A fourth signal processing unit that extracts the DC component and converts it into a digital signal, and a second arithmetic processing that detects a continuous wave by inputting signals from the third signal processing unit and the fourth signal processing unit Part .

  The train sorting device according to the present invention sends an intermittent wave signal having the same frequency as the plurality of frequencies indicating the train type to the primary coil of the train sorting ground element, and receives the plurality of frequencies received by the secondary coil of the train sorting ground element. It is possible to reliably detect disconnection, failure, etc. of the train sorting device including the train sorting ground element by orthogonally detecting the intermittent wave signal and the received signal of the frequency signal indicating the train type transmitted from the train. it can.

  Further, by outputting a continuous wave signal in the frequency band of the constantly oscillating frequency used in the ATS onboard device to the train sorting ground unit, the continuous oscillation frequency of the ATS onboard device is transmitted from the train sorting ground unit. It is possible to prevent the operation of changing the frequency by being drawn into the intermittent wave signal for train selection.

  Furthermore, by performing quadrature detection of the reception signal of the continuous wave signal output to the train sorting ground unit, it is possible to reliably detect disconnection or failure of the train sorting device and to enable bidirectional transmission.

FIG. 1 is a block diagram showing the configuration of the train sorting apparatus of the present invention. As shown in FIG. 2, the train sorting device 1 receives a signal from a train sorting vehicle upper 3 mounted on the train 2 and sorts the type of the train 2. The train sorting ground 4 And a train selector 5, an output transformer 6, and an input transformer 7. The train sorting ground element 4 has a primary coil 8 and a secondary coil 9. The primary coil 8 is connected to the train sorting unit 5 via an output transformer 6, and the secondary coil 9 is routed via an input transformer 7. It is connected to the train sorting unit 5.

  The train selection unit 5 includes a transmission unit 10, a reception unit 11, and an arithmetic processing unit 12. The transmission unit 10 includes an oscillation circuit 13, an intermittent wave generation unit 14, a D / A conversion unit 15, a low-pass filter 16, and an amplification unit 17. The reception unit 11 includes an attenuator 18, a first signal processing unit 19, and a second signal. The signal processing unit 20 is included. The first signal processing unit 19 includes a multiplication unit 21 that multiplies the reception signal and the transmission signal generated by the intermittent wave generation unit 14, a filter 22, and an A / D conversion unit 23. The second signal processing unit 20 includes The signal delay unit 24 that inputs the transmission signal generated by the intermittent wave generation unit 14 and outputs a signal whose phase is shifted by 90 degrees, and the phase of the reception signal and the transmission signal output from the signal delay unit 24 are shifted by 90 degrees A multiplication unit 25 for multiplying signals, a filter 26 and an A / D conversion unit 27 are provided.

  The intermittent wave generation unit 14 of the transmission unit 10 has a plurality of frequencies indicating the train type used in the train selection vehicle upper 3 mounted on each train by a signal of a predetermined frequency constantly output from the oscillation circuit 13. An intermittent signal having the same frequency as f1 to fn is generated. The generated frequencies f1 to fn are converted into analog signals by the D / A converter 15, unnecessary frequency components are removed by the low-pass filter 16, amplified by the amplifier 17, and train-grounded via the transmission transformer 6. It is output to the primary coil 8 of the child 4.

  The secondary coil 9 of the train sorting ground element 4 receives the signal output from the primary coil 8 and inputs the signal to the receiving unit 11 via the input transformer 7. The receiving unit 11 attenuates the received signal received by the attenuator 18 and sends it to the first signal processing unit 19 and the second signal processing unit 20. The first signal processing unit 19 multiplies the received reception signal and the intermittent signal output from the intermittent wave generation unit 14 of the transmission unit 10 by the multiplication unit 21. The multiplication timing is multiplied in synchronism with the intermittent signal output from the intermittent wave generation unit 14, the DC component is extracted by the filter 22, and other signal frequency components due to external noise or the like are removed to remove the A / D conversion unit. The digital signal is converted into a digital signal at 23 and output to the arithmetic processing unit 12. The second signal processing unit 20 multiplies the received reception signal and the signal obtained by shifting the phase of the intermittent signal output from the signal delay unit 24 by 90 degrees by the multiplication unit 25, and extracts the DC component by the filter 26. The digital signal is converted by the A / D converter 27 and output to the arithmetic processor 12.

  As described above, the signal having the frequency f1 to fn is output from the transmission unit 10 to the primary coil 8 of the train sorting ground element 4, and the signal output to the primary coil 8 is received by the secondary coil 9 to receive the reception unit 11. When the quadrature detection is performed and the signal is output to the arithmetic processing unit 12, for example, the train selection vehicle upper 3 transmitting a signal of frequency f 2 as the train selection signal passes through the train selection ground 4. When the secondary coil 9 receives the train selection signal having the frequency f2, the signal having the frequency f2 output from the primary coil 8 and received by the secondary coil 9 is amplified and sent to the receiving unit 11. The reception unit 11 performs quadrature detection on the transmitted signal, collates it with the intermittent wave signal output from the transmission unit 11, and outputs it to the arithmetic processing unit 12, thereby selecting the train selection signal having the frequency f2. it can.

In addition, since the signal of the frequency f1 to fn that is always output from the transmission unit 10 to the primary coil 8 is received by the secondary coil 9 and is orthogonally detected by the reception unit 11 and output to the arithmetic processing unit 12, It is possible to detect disconnection or failure of the ground device including the train sorting ground element 4.

This train sorting ground coils 4, as shown in FIG. 2, is placed at the center of the line 30, is configured to detect a train sorting board coil 3 installed in the central location of the train 2. On the other hand, the ground element 31 of the ATS device is installed by shifting by a predetermined distance from the center of the line 30 in the traveling direction, and usually a signal is transmitted from the primary coil side of the ATS vehicle upper element and the secondary element is transmitted. The side coil is configured to receive a signal. Due to the characteristics of the ATS on-board device, a phenomenon occurs in which the oscillation frequency is drawn to the frequency higher than the frequency used in the ATS on-board device. For this reason, if the signal of the frequency f1-fn is always transmitted from the primary coil 8 of the train selection ground element 4 , this transmission signal is drawn into the ATS onboard device and the frequency used in the ATS onboard device. There is a possibility that the oscillation frequency changes to a different frequency and malfunctions.

In order to prevent the transmission signal from the train sorting ground element 4 from interfering with the ATS on-board device and malfunctioning, as shown in the block diagram of FIG. 3, the ground device is used on the ATS on-board device. A continuous wave transmission unit 34 having an oscillation circuit 32 that generates a signal in a frequency band of a constant oscillation frequency, for example, a signal of frequency f0, and an amplifier 33 that amplifies a continuous wave output from the oscillation circuit 32 is provided. For example, a continuous wave signal having a frequency f0 to be output is transmitted from the secondary coil 9 of the train sorting ground element 4 through the transformer 7a. In this way, by transmitting a signal in the frequency band of the constantly oscillating frequency used in the ATS onboard device from the secondary coil 9, the always oscillating frequency of the ATS onboard device becomes the primary from the train sorting ground unit 4. It is possible to prevent the operation of changing the frequency by being drawn into the intermittent wave signal for train selection transmitted by the coil 8, and the ground element 31 of the ATS device is installed at the center of the line 30 like the train element 4 Even so, the transmission signal from the train sorting ground element 4 does not have to interfere with the ATS on-board device.

In addition, a continuous wave receiving unit 35 and an arithmetic processing unit 36 are provided for receiving a continuous wave signal transmitted from the secondary coil 9 of the train sorting ground element 4 and received by the primary coil 8 via the transformer 6a. The third embodiment includes a continuous wave receiver 35, an attenuator 37, a multiplier 38 that multiplies the received continuous wave signal by the continuous wave signal generated by the oscillation circuit 32, a filter 39, and an A / D converter 40. The signal processing unit 41, the signal delay unit 42 that inputs the continuous wave signal generated by the oscillation circuit 32 and outputs a signal whose phase is shifted by 90 degrees, the received continuous wave signal and the signal output from the signal delay unit 42 are multiplied And a fourth signal processing unit 46 having a filter 44 and an A / D conversion unit 45. The signals from the third signal processing unit 41 and the fourth signal processing unit 46 are arithmetically processed. Input to the unit 36 to detect continuous waves. Accordingly, it is possible to enable two-way transmission it is possible to detect a disconnection or failure of the ground system, including train sorting ground coils 4 and the continuous wave transmitting unit 34.

It is a block diagram which shows the structure of the train selection apparatus of this invention. FIG. 3 is a layout diagram of a train sorting ground element and an ATS device ground element. It is a block diagram which shows the structure of another train selection apparatus. It is a block diagram which shows the structure of the conventional train selection apparatus.

Explanation of symbols

1; train sorting device, 2; train, 3; train upper for train sorting, 4; ground for train sorting,
5; train selection unit, 6; output transformer, 7; input transformer, 8; primary coil.
9; secondary coil, 10; transmission unit, 11; reception unit, 12; arithmetic processing unit,
13; Oscillator circuit; 14; Intermittent wave generator; 15; D / A converter;
16; low-pass filter, 17; amplification unit, 18; attenuator, 19; first signal processing unit,
20; second signal processing unit, 21; multiplication unit, 22; filter, 23; A / D conversion unit,
24; signal delay unit, 25; multiplication unit, 26; filter, 27; A / D conversion unit,
30; Line, 31; Ground element of ATS device, 32; Oscillator circuit, 33; Amplifier,
34; continuous wave transmission unit, 35; continuous wave reception unit, 36; arithmetic processing unit, 37; attenuator,
38; multiplier 39; filter 40; A / D converter 41; third signal processor;
42; signal delay unit, 43; multiplication unit, 44; filter, 45; A / D conversion unit,
46: Fourth signal processing unit.

Claims (3)

A train sorting ground unit and a train sorting unit;
The train sorting ground element has a primary coil and a secondary coil, and receives a signal of a frequency indicating a train type transmitted from a train,
The train selection unit includes a transmission unit, a reception unit, and an arithmetic processing unit,
The transmission unit outputs an intermittent wave signal having the same frequency as a plurality of frequencies indicating a train type to a primary coil of the train sorting ground element,
The receiving unit includes a first signal processing unit and a second signal processing unit, and the first signal processing unit is transmitted by the primary coil that is output from a secondary coil of the train sorting ground unit. Multiply the intermittent signal of multiple frequencies and the received signal of the frequency signal indicating the train type transmitted from the train by the intermittent signal generated by the transmitter, extract the DC component and convert it to a digital signal Output to the arithmetic processing unit, and the second signal processing unit transmits from the train of intermittent signals having a plurality of frequencies transmitted from the primary coil output from the secondary coil of the train sorting ground element and the train. The received signal of the frequency signal indicating the train type is multiplied by a signal obtained by shifting the phase of the intermittent wave signal generated by the transmission unit by 90 degrees, the DC component is extracted and converted into a digital signal, and the calculation is performed. Output to the processing unit,
The arithmetic processing unit selects a train based on signals input from the first signal processing unit and the second signal processing unit.   The train sorting device according to claim 1, further comprising a continuous wave transmission unit that outputs a continuous wave signal in a frequency band of a constant oscillation frequency used in the ATS on-board device, to the secondary coil of the train sorting ground unit. Multiplying the reception signal of the continuous wave signal received by the primary coil of the train sorting ground element and the continuous wave signal generated by the continuous wave transmission unit, and extracting the DC component and converting it to a digital signal The signal processing unit, and the reception signal of the continuous wave signal received by the primary coil of the train sorting ground unit and the signal obtained by shifting the phase of the continuous wave signal generated by the continuous wave transmission unit by 90 degrees, A fourth signal processing unit that extracts the DC component and converts it into a digital signal; and a second calculation that detects a continuous wave by inputting signals from the third signal processing unit and the fourth signal processing unit. The train sorting device according to claim 2 , further comprising a processing unit .

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