JPS62131866A - Car operation information transmitter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a system for transmitting information regarding the operation of railway vehicles between adjacent stations.

[Conventional technology]

On railways with low traffic volume, such as single-track sections, solid line transmission lines are installed for section blocking devices between adjacent stations, which transmit DC pulses and transmit vehicle operation information, but other communication When multiplexing with a carrier or using a wireless transmission path, information must be transmitted using a carrier wave, and in this case, in order to achieve high reliability and fail-safety, the same content must be sent and received repeatedly. , efforts are being made to avoid the occurrence of errors.

[Problem that the invention seeks to solve]

However, if the same content is to be transmitted and received repeatedly, the circuit configuration required for transmission/reception control and error checking becomes complex and expensive, making it unsuitable for use with relatively simple section blocking devices. will occur.

[Means for solving problems]

In order to solve the above-mentioned problem, the present invention is constructed by means of a bridge.

That is, a transmitter that sends out an AC signal with a frequency corresponding to the vehicle operation information to be transmitted, a receiver that rectifies the AC signal with a frequency corresponding to the vehicle operation information to be received and drives a fail-safe relay, and a transmitter. It is equipped with a relay contact point that connects the output of the transmitter on its own side to the transmission line and disconnects the input of the receiver from the transmission line in response to the generation of vehicle operation information.

[Effect]

Therefore, in response to the generation of vehicle operation information to be transmitted, the transmitter output of the corresponding frequency is connected to the transmission line by the contact of the relay, and an alternating current signal is transmitted, and the receiver input on the own side is connected from the transmission line to the relay. The contact is disconnected, preventing the possibility of malfunction due to the transmitted signal, while
A corresponding receiver at the other end rectifies the AC signal and drives a relay, thereby receiving vehicle operation information.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to circuit diagrams showing embodiments.

In the figure, a transmission line 1 consisting of a pair of railroad tracks or wireless lines is provided between stations ST□ and ST, which are adjacent to each other, and relays are installed at both ends of stations ST- and STm. A transmitter (hereinafter referred to as TX) that sends out an AC signal with a frequency fs"f4 corresponding to the vehicle operation information (hereinafter referred to as information) to be transmitted through contacts IA111B+ and 2AI+2B1.
21 to 24 outputs are connected in parallel, and
At station STs, an alternating current signal with frequency f11f2 is selected and amplified, passed through transformer T to rectifier REC, and then rectified to relay 2N.

Receiver (hereinafter referred to as RX) 3t that drives 2R individually.

32 are provided, and these inputs are connected to relay contact 2At.
RX3s is connected in parallel to transmission line 1 via l2Bz, and at station ST, RX3s similarly drives relays 1N and 1R with an AC signal of frequency f3-f4.
r 34 is provided, and the relay contacts IA2 + IBz
These inputs are connected in parallel to the transmission line 1 via.

In addition, relays IA and I each have fail-safe properties.
B, IHR, IFR, 2A, 2B, 2HR, 2FRK to station STa, logic circuit (hereinafter referred to as LG) for each STm 4t
-42 stations are constructed, and these station STi station S
The Tm side signal 51 and the station ST and side signal 52 of station STm are subject to control of the current status.

Note that the relay IN is driven by RX3t to RX34.

2R, IN, and IR also have fail-safe properties.

Here, when the vehicle departs from station ST to STm, LG4. switch PB
When IA is turned on, one relay operates and contact IAt
Turn on TX2. When the output of is connected to transmission line 1, contact 1 and 2 are turned off to disconnect the input of RX3s r34 from transmission line 1, and the AC signal with frequency f1 from TX21 is transmitted to transmission line 1. and K at the same time, this goes around to RX3a * 34, and RX3
Preventing s+34 from malfunctioning is provided.

Then, at the station STI, contact 2 inserted in series
RX31 receives the frequency flO AC signal via A112B2 and drives relay 2N, so contact 2Nt of LG42 turns on 9, and at the same time, a buzzer etc. sounds by a circuit omitted in the diagram to notify this. , station STA
When allowing a vehicle to depart from
When turned on, the latching type relay 2FR becomes the localization side, and the contact 2FR.

is turned on, and contact PR2B! is turned on. and 2
Activate relay 2B via HR.

If relay 2B operates, contact 2Bt turns on and TX is activated.
At the same time, an AC signal with a frequency of 14 is transmitted from 24, and RX3s l 32 is disconnected from the transmission path by turning off contact 21h, and the same state as described above occurs.During this time, KLG41
If switch PBIA is off, contact IAz
When turned on, the AC signal from TX24 is received by RX34, relay 1R operates, contact IRt is turned on, latching type relay IFR is set to the opposite position, and contact 1 is turned on.
Turn on FR2.

For this reason, LG4. If you operate the departure lever ■ to the station STI side and turn it on, it will be connected to the station STA via contact 1FR.
Relay IHR operates on the premise that contact TR of track circuit relay TR, which operates in response to the absence of a vehicle line between , ST, and detects the presence of a vehicle and restores the line, is on, and the contact IHR2 operates. When the contact is turned on, the signal light G (blue) of the traffic light 51 lights up to indicate progress.

Therefore, the vehicle is allowed to depart from station ST, the vehicle departs according to the progress indication of signal 5I, and the vehicle departs from station ST and ST.
If you enter the section between Tm, relay TR will be restored,
Relay IHR is also restored by turning off contact TRI, and contact I
When the recovery contact of HRI is turned on, signal light R of traffic light 51 (
(red) lights up to indicate a stop at stations ST, , ST1.
Block the section in between.

Regarding the above, when a vehicle departs from station STm to ST, the TX
An AC signal of frequency 12 is transmitted from 23, and its RX
In response to reception by 3s, switch PBI B of LG41
When turned on, an AC signal with a frequency of 12 is transmitted from TX2z, and upon reception by RX32, the operation of the departure lever to the station STA side becomes effective, and relay 2HR is activated on the assumption that contact TR2 is on, as described above. The signal 52 is activated, and the signal 52 becomes a progress indication, and becomes a stop indication according to the vehicle width entering the inter-station section.

In addition, TX2. -24 frequencies 11-f4 may be determined according to the number of information to be transmitted, and correspondingly, the selection frequencies of RX3r-34 may be determined, and as RX31-34,
ATS (Automatic Train 5top
, ) etc. may be used.

Therefore, if the TXs 21 to 24 stop oscillating or have a failure such as lower output image, no information is transmitted to the other party and no abnormality is displayed.

Contact I A+ + I even if an output is generated when unnecessary
Bl.

Blocked by 2At l 2B+ and similarly, frequency f1 goes to 12 and f2 goes to j'! or f3
changes to 14 and f4 changes to f3, then L G
The operation sequence of 41 +42 does not change, and similarly no abnormality is displayed.

Also, TX2. It is most dangerous if the frequency fs of TX 23 changes to 14 and the frequency 13 of T
There is no malfunction of 3313z, and no abnormality is displayed.

On the other hand, in the RX3t to 34, by applying those for ATS, in the case of self-oscillation or failure, the relays are not driven and there is no risk of abnormality occurring.

Therefore, with a simple configuration, it is possible to realize highly reliable information transmission that does not pose any danger to the operation of the vehicle and has 7 ale-safe conditions.

However, the number and frequency of TX21 to 24 may be determined according to the number of information to be transmitted and can be received separately from each other.
All you have to do is set it up.

In addition, the configuration of LG41+4t can be selected according to the situation as long as it can guarantee fail-safe properties.
Various modifications are possible, such as the number of displayed traffic lights 51 and 52 may be determined according to conditions.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, highly reliable and fail-safe transmission of vehicle operation information is realized with a simple and inexpensive configuration, and remarkable effects are obtained in information transmission for various railways. It will be done.

[Brief explanation of drawings]

The figure is a circuit diagram showing an embodiment of the present invention. 1...Transmission path, 21-24...TX (transmitter), 31-34...RX (receiver), 4□. 42...LG (logic circuit), 51,52...
・Signal, STA, STm...station, T...transformer, RFC...rectifier, IA, IB, IHR, I
F.R. IN, IR, 2A, 2B, 2HR, 2FR, 2N, 2R
Fist Fist ・Relay, lA111A211BllIB
212Al12A212Bt, 21h...Contact.

Claims (1)

[Claims] In a transmission device that transmits and receives vehicle operation information between mutually adjacent stations and responds to a logic circuit constituted by fail-safe relays, an alternating current signal of a frequency corresponding to the vehicle operation information to be transmitted is sent out. a transmitter, a receiver that rectifies an alternating current signal of a frequency corresponding to the received vehicle operation information and drives the fail-safe relay, and the transmitter on its own side in response to the generation of the vehicle operation information to be transmitted. A vehicle operation information transmission device comprising: a relay contact for connecting the output of the receiver to a transmission path and disconnecting the input of the receiver from the transmission path.