JPH08301112A - Binary three-position type alternating current track circuit device - Google Patents

Abstract

PURPOSE: To accomplish common usage as power sources for 50Hz and for 60 Hz and to surely detect a train in a section in which induction disturbance from others exists. CONSTITUTION: In a transmission unit 2, an alternating current power source voltage is rectified by means of a rail side rectifier 21 so as to be converted into direct current voltage. This direct current voltage is oscillated by means of a synchronizing signal with a frequency (f), which is slightly higher than 50Hz or 60Hz, generated in a synchronizing signal generator 12, and a signal wave with a frequency (f) is transmitted to a rail circuit. In a receiving unit 3, voltage with a frequency (f) is impressed to a rail coil in a rail relay 33 by means of the transmitted signal wave, while direct current voltage rectified by means of a local side rectifier 35 is oscillated by means of the synchronizing signal with a frequency (f). Then, the voltage with a frequency (f) is impressed to a local coil in the rail relay 33, so that voltage inputted to the rail relay 33 for detection of a train is not related with a frequency for a commercial power source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binary three-position AC track circuit device which can be commonly used for power source frequencies of 50 Hz and 60 Hz.

[0002]

2. Description of the Related Art In a track circuit used for a railroad signal device for detecting a train, in either an AC electrification section or a DC electrification section, for example, a section provided near a Shinkansen or the like and inducing an overhead wire current or the like. Then, the power supply frequency in that section, that is, 50 Hz or 60 Hz cannot be used as the frequency of the signal power supply. In such a case, the track circuit uses audible frequencies around 1 kHz as the carrier wave,
An AF track circuit of a type that uses a signal modulated with the signal frequency as a power source, a double track circuit or a double track circuit that uses a frequency twice as high as a commercial frequency of 50 Hz or 60 Hz is mainly applied.

However, the AF track circuit has economical drawbacks such as a short control length and a high equipment cost. Also,
The double-track circuit is often used in the DC electrification section, but it is not sufficient as a countermeasure for the induction failure section because the train current contains a large amount of 100 Hz or 120 Hz, which is twice the power supply frequency. .

For this reason, as a countermeasure for the guide obstacle section,
A frequency-divided orbit circuit with a signal frequency of 1/2 of the power supply frequency of 50 Hz or 60 Hz is applied. As shown in the block diagram of FIG. 2, the frequency division track circuit is a track circuit BT.
On the ingress side, the reversing relay-23 and power supply frequency 50 (60) Hz
Is provided at a frequency of 25 (30) Hz for transmission to the track circuit BT, and a frequency divider 43 and a track relay 33 are provided on the entry side of the track circuit BT. Then, as shown in the waveform diagram of FIG. 3, the frequency divider 41 inputs a voltage whose phase is, for example, 90 degrees ahead of the power supply voltage from the reversing relay 23, and divides it into 1/2 frequency to obtain 25 (30 ) Hz signal current is sent to the track circuit BT through the impedance bond 25. On the entry side of the track circuit BT, the voltage phase-adjusted from the impedance bond 31 through the matching transformer 42 is 25 (30) Hz in the frequency divider 43.
A low-pass filter for use in the system is applied, the output of which is doubled by the frequency doubler, converted into a signal current of 50 (60) Hz, which is the same as the power supply frequency, and applied to the track coil of the track relay 33. A voltage of 50 (60) Hz of the same system as the input voltage of the frequency divider 41 is applied to the local coil of the orbit relay 33. in this way,
By applying a voltage whose phase is advanced by 90 degrees to the voltage applied to the local coil to the orbit coil, the fan blades of the orbit relay 33 rotate to drive the contacts. In this state, when the power supply voltage which is the input of the frequency divider 41 on the power transmission side is poled by the pole relay relay 23, the phase of the voltage applied to the rail coil of the rail relay 33 is the voltage applied to the local coil. 90 degrees from the phase of, and the rotational force of the blades works in the opposite direction to that before the reversal, and it is possible to move to the third position. Further, since 50 (60) Hz and its harmonics generated by the imbalance of the induction or train current are blocked by the low-pass filter in the frequency doubler, malfunction due to the disturbing current can be prevented.

[0005]

However, in the section where the 50 Hz power source and the 60 Hz power source alternate with each other, it is necessary to properly use the frequency divider and the frequency divider according to the power source frequency. , Fixed frequency equipment could not be used as a track circuit because of malfunction. In addition, the power consumption is large due to the characteristics of the frequency divider, the life of the contact of the reversing relay for reversing the power supply voltage that is the input of the frequency divider is short, and the running cost is high.
Furthermore, since the operating frequency is as low as 25 (30) Hz, the impedance bond becomes large. There is also a problem that the life of the track relay is shortened because the output waveform of the frequency doubler is bad as shown in FIG.

[0006] The present invention has been made to solve the above disadvantages, and can be commonly used as a 50 Hz power source and a 60 Hz power source, and can reliably detect a train even in a section where there is a guidance obstacle from another. Can be 2 yuan 3
The purpose is to obtain a unit type AC track circuit device.

[0007]

A two-element, three-position AC track circuit device according to the present invention has a power supply cable (11), a synchronization signal generator (12) and a synchronization signal cable (). 13), a track side rectifier (21), a transmitter (22) and a polarization relay (23) on the advance side of the track circuit, and a relay transformer (on the entrance side of the track circuit. 32), an orbit relay (33), a local power supply device (34), and a local side rectifier (35), which is a binary three-position AC orbit circuit device, wherein the power cable (11) is a track circuit. The power is supplied along with the frequency 50 Hz or 60 Hz and the power in which these frequencies coexist alternately, and the synchronizing signal generator (12) is supplied with the frequency 50 Hz or from the power cable (11).
60 Hz and the electric power where these frequencies coexist alternately, the frequency is 50 Hz or 60 Hz at a frequency slightly higher than the frequency of 60 Hz.
The sync signal is converted to a frequency f that does not correspond to an integer multiple of the frequency f, and the sync signal cable (13) is laid along the track circuit to synchronize the frequency f output from the sync signal generator (12). An orbital side rectifier (21) that transmits a signal and is provided on the advancing side of the orbital circuit rectifies the power of frequency 50 Hz or 60 Hz supplied from the power supply cable (11), and transmits DC power to the transmitter (22). The transmitter (22) converts the input DC power by the synchronizing signal of the frequency f sent from the synchronizing signal cable (13) and sends the signal wave of the frequency f to the inversion relay (23), The reversing relay (23) reverses the polarity of the signal wave of the frequency f output from the transmitter (22) under the condition of the presence or absence of a train in the front track circuit, and the track circuit via the resistor (24). Impedance Bonn at the end of the The orbit relay (33), which outputs the signal to the terminal (25) and is provided at the entry end of the orbit circuit, has an orbit coil and a local coil, and is applied to the blade by the voltage applied to each coil and the phase difference between them. The relay transformer (32) has a filter and a phase adjuster to apply a rotational force to drive the contacts, and a signal wave of frequency f is input from an impedance bond (31) provided at the entrance end of the track circuit. Then, the output voltage of the frequency f is sent to the orbit coil of the orbit relay (33), and the local side rectifier (35) rectifies the power of the frequency 50Hz or 60Hz supplied from the power cable (11), The electric power is sent to the local side power supply device (34), and the local side power supply device (34) converts the input DC power into the synchronization signal cable (1
It is characterized in that it is converted by the synchronizing signal of frequency f sent from 3) and the voltage of frequency f is sent to the local coil of the orbit relay (33).

[0008]

In the present invention, in the transmitting section of the track circuit, the AC power supply voltage is rectified into a DC voltage, and this DC voltage is oscillated with a synchronizing signal having a frequency f slightly higher than 50 Hz or 60 Hz which is the frequency of the commercial power supply. A signal wave of frequency f is sent to the track circuit, and a voltage of frequency f is applied to the track coil of the track relay by the signal wave sent by the receiving section of the track circuit, and a DC voltage obtained by rectifying the AC power supply voltage
The voltage input to the track relay for train detection is irrelevant to the frequency of the commercial power supply by oscillating with the synchronizing signal of No. 1 and applying the voltage of frequency f to the local coil of the track relay.

Further, the frequency of the signal wave sent to the track circuit is set to a frequency slightly higher than the frequency of the commercial power source of 50 Hz or 60 Hz, and the frequency f of the commercial power source is 50/60 Hz as the frequency f which does not correspond to an integral multiple of 50 Hz or 60 Hz. And to prevent induction disturbances caused by its harmonics.

[0010]

1 is a block diagram showing the configuration of an embodiment of the present invention. As shown in the figure, the track circuit device for detecting a train has a power supply line 1 and a transmitter 2 and a receiver 3 provided in each track circuit AT, BT, CT. The power supply line 1 has a power supply cable 11, a sync signal generator 12, and a sync signal cable 13. The power supply cable 11 and the synchronization signal cable 13 are laid along the track circuits AT, BT and CT. The power cable 11 has a frequency of 50 Hz or
When the power of 60 Hz or the frequencies of 50 Hz and 60 Hz coexist alternately, the power of 50 Hz and 60 Hz are alternately transmitted. The synchronizing signal generator 12 supplies the power of the frequency 50 Hz or 60 Hz supplied from the power cable 11 with a frequency slightly higher than the frequency 60 Hz and does not correspond to an integral multiple of the frequency 50 Hz or 60 Hz, such as 80 Hz, 83.3 Hz, 135 Hz. The frequency f is converted to the frequency f and the sync signal cable 13 is converted to the frequency f.
Send out the sync signal of.

The transmitter 2 is a rail-insulated track circuit A.
Orbit side rectifier 21 provided on the advancing side of T, BT, CT
The transmitter 22, the inversion relay 23, the resistor 24, and the impedance bond 25 connected to the advancing side boundary point 4 of the track circuit BT. The orbital rectifier 21 is a power cable 1
The DC voltage obtained by rectifying the voltage of 50 Hz or 60 Hz supplied from the transmitter 1 is sent to the transmitter 22. The transmitter 22 converts the input DC voltage by the synchronizing signal of the frequency f sent from the synchronizing signal cable 13 and sends the signal wave of the frequency f to the inversion relay 23. The reversing relay 23 reverses the polarity of the signal wave of the frequency f sent from the transmitter 22 by 180 degrees under the condition of the presence or absence of a train in the track circuit in front of the resistor 2
It is sent to the impedance bond 25 via 4 and output to each track circuit AT, BT, CT.

The receiving unit 3 is provided on the approach side of each track circuit AT, BT, CT, and is connected to the approach side boundary point 5 of each track circuit AT, BT, CT by an impedance bond 31 and a relay transformer 32. And orbit relay 33 and local power supply 34
And a local side rectifier 35. The orbit relay 33 has two coils, an orbital coil and a local coil, and applies a rotational force to the vanes by the voltage applied to the orbital coil and the local coil and the phase difference between them to drive the contacts. The relay transformer 32 has a band pass filter for frequency fHz and a phase adjuster, inputs a signal wave of frequency f from the impedance bond 31 connected to the entrance end of each track circuit, and outputs the frequency f. The voltage is sent to the orbit coil of the orbit relay 33.
The local side rectifier 35 sends a DC voltage obtained by rectifying the voltage of the frequency 50 Hz or 60 Hz supplied from the power supply cable 11 to the local power supply device 34. The local-side power supply device 34 converts the DC voltage sent by the sync signal of the frequency f sent from the sync signal cable 13 to convert the voltage of the frequency f into the track relay.
Send to 33 local coils.

In the track circuit device constructed as described above, the synchronizing signal generator 12 supplies the power of the frequency 50 Hz or 60 Hz supplied from the power supply cable 11 to, for example, 80 H.
It is converted into the frequency f of z and the sync signal of the frequency f is constantly sent to the sync signal cable 13. The track side rectifier 21 of the transmitter 2 provided on the advancing side of the track circuit BT rectifies the AC voltage of the frequency 50 Hz or 60 Hz supplied from the power supply cable 11 and sends the DC voltage to the transmitter 22.
The transmitter 22 transmits the transmitted DC voltage to the synchronization signal cable 13
The signal wave of the frequency f is sent to the reversing relay 23 by oscillating by the synchronizing signal of the frequency f sent from. The reversing relay 23, to which the signal wave of the frequency f is constantly sent, sends the signal wave of the frequency f sent from the transmitter 22 to the synchronization signal cable 13 when there is no train in the track circuit CT ahead. The phase is advanced by 90 degrees from the synchronizing signal of the frequency f sent out to the impedance bond 25 via the resistor 24.
To the track circuit BT.

If there is no train in the track circuit BT,
The signal wave of the frequency f sent from the impedance bond 25 is received by the relay transformer 32 through the impedance bond 31 connected to the approach side boundary point 5 of the track circuit BT. Upon receiving the signal wave from the track circuit BT, the relay transformer 32 sends a voltage whose phase matches the signal wave at the frequency f to the track coil of the track relay 33. In this way, the frequency f of the signal wave sent to the track circuit BT is set to a frequency slightly higher than the frequency of the commercial power source of 50 Hz or 60 Hz,
Also, by setting the frequency f that does not correspond to an integral multiple of 50 Hz or 60 Hz, it is possible to prevent the voltage input to the orbit coil of the orbit relay 33 from being hindered by the commercial power frequency of 50/60 Hz and its harmonics. it can.

On the other hand, the local side rectifier 35 is a power cable 1.
The direct current voltage obtained by rectifying the voltage of 50 Hz or 60 Hz supplied from No. 1 is sent to the local power supply device 34.
The local power supply unit 34 sends the DC voltage sent to the synchronization signal case.
It oscillates with the synchronizing signal of frequency f sent from the bull 13,
The voltage of the frequency f with the same phase as the synchronizing signal is applied to the orbit relay 33.
Send to the local coil. Therefore, the voltage applied to the track coil of the track relay 33 and the local coil has the same frequency,
The phase of the voltage applied to the orbit coil leads the phase of the voltage applied to the local coil by 90 degrees, and the orbit relay 33 constitutes a contact point showing the progress indication G.

When the train enters the track circuit BT in this state, the signal wave sent from the advancing side of the track circuit BT is short-circuited at the axle of the train and input to the track coil of the track relay 33 of the receiver 3. Voltage becomes "0" and the orbit relay
A reference numeral 33 constitutes a contact point which indicates a stop indication R when dropped.

When the train advances from the track circuit BT and advances into the track circuit CT and is on the track, the reversing relay 23 of the transmitter 2 provided on the advance side of the track circuit BT is sent from the transmitter 22. For example, the phase of the signal wave of frequency f from the synchronization signal of frequency f sent to the synchronization signal cable 13 is
It is delayed by 90 degrees and sent to the impedance bond 25 via the resistor 24 and output to the track circuit BT. Upon receiving the signal wave from the track circuit BT, the relay transformer 32 of the receiving unit 3 provided on the approach side of the track circuit BT receives a voltage whose frequency matches the phase of the signal wave at the frequency f, that is, the synchronization signal cable 13 Phase from the sync signal of frequency f sent to
The voltage delayed by 90 degrees is sent to the orbit coil of the orbit relay 33.
The orbit relay 33 constitutes a contact point indicating a caution signal Y when a voltage whose phase is delayed by 90 degrees from the voltage applied to the local coil is applied to the orbit coil. In this way, the orbit relay 33 is 3 of stop indication R, caution indication Y and progress indication G.
Be able to work in place.

[0018]

As described above, the present invention rectifies an AC power supply voltage into a DC voltage in a transmission section of a track circuit,
This DC voltage is 50Hz or 60H which is the frequency of commercial power source.
It oscillates with a synchronizing signal of frequency f a little higher than z, sends a signal wave of frequency f to the track circuit, and applies a voltage of frequency f to the track coil of the track relay by the signal wave sent in the receiving part of the track circuit. In addition, the DC voltage obtained by rectifying the AC power supply voltage is oscillated by the synchronizing signal of frequency f, and the voltage of frequency f is applied to the local coil of the track relay, so that it is input to the track relay for train detection. The voltage can be made independent of the frequency of the commercial power supply, and the frequency is 50Hz.
The equipment cost can be reduced by sharing the equipment in the section of the power supply voltage of 60 Hz.

Further, the frequency of the signal wave sent to the track circuit is set to a frequency slightly higher than 50 Hz or 60 Hz which is the frequency of the commercial power source, and the frequency f of the commercial power source is 50/60 Hz as the frequency f which does not correspond to an integral multiple of 50 Hz or 60 Hz. And, it is possible to prevent the occurrence of induction trouble due to its harmonics.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a configuration of a conventional frequency-divided frequency division track circuit.

FIG. 3 is a waveform diagram of each part of a conventional frequency-divided frequency track circuit.

[Explanation of symbols]

 1 Power Line 2 Transmitter 3 Receiver 11 Power Supply Cable 12 Synchronous Signal Generator 13 Synchronous Signal Cable 21 Orbital Side Rectifier 22 Transmitter 23 Polarization Relay 24 Resistor 25 Impedance Bond 31 Impedance Bond 32 relay transformer 33 orbit relay 34 local power supply device 35 local side rectifier 41 frequency divider 42 matching transformer 43 frequency multiplier

Claims (1)

[Claims] 1. A power supply cable (11), a synchronization signal generator (12) and a synchronization signal cable (13) are provided in a power supply line.
And a track side rectifier (21) on the advance side of the track circuit.
And a transmitter (22) and a reversing relay (23), and a relay transformer (32) and an orbit relay on the entry side of the track circuit.
(33), local power supply (34), local rectifier (3
5) is a two-element three-position AC track circuit device having a power cable (11) laid along the track circuit, and sends a frequency of 50 Hz or 60 Hz and electric power in which these frequencies coexist alternately. , The synchronization signal generator (12) is a power cable.
The frequency 50Hz or 60Hz supplied from the bull (11) and the electric power in which these frequencies coexist alternately are frequency 60Hz.
At a slightly higher frequency, the frequency is converted into a frequency f that does not correspond to an integer multiple of 50 Hz or 60 Hz and a synchronization signal is output, and the synchronization signal cable (13) is laid along the track circuit.
The orbit side rectifier (21) provided on the advancing side of the orbit circuit transmits the synchronizing signal of the frequency f output from the synchronizing signal generator (12) and has a frequency of 50 Hz supplied from the power cable (11) or
The power of 60 Hz is rectified and the DC power is sent to the transmitter (22).
The signal wave of frequency f is sent to the reversing relay (23) after being converted by the synchronizing signal of frequency f sent from the bull (13),
The reversing relay (23) reverses the polarity of the signal wave of the frequency f output from the transmitter (22) under the condition of the presence or absence of a train in the front track circuit, and the track circuit via the resistor (24). Impedance bond (2
The orbit relay (33) provided at the entry end of the orbit circuit has an orbit coil and a local coil. The voltage applied to each coil and the phase difference between them cause a rotational force on the blade. The relay transformer (32) has a filter and a phase adjuster, and inputs a signal wave of frequency f from an impedance bond (31) provided at the entrance end of the track circuit. , The output voltage of frequency f is sent to the orbit coil of the orbit relay (33), and the local side rectifier (35) is connected to the power cable (1
1) The power of 50 Hz or 60 Hz supplied from 1) is rectified and the direct current power is sent to the local side power supply device (34), and the local side power supply device (34) receives the input direct current power as a synchronization signal case.
A binary three-position AC track circuit device, characterized in that a voltage of frequency f is converted into a local coil of a track relay (33) by conversion with a synchronizing signal of frequency f sent from a bull (13).