JPS604025B2 - vehicle signaling device - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in vehicle signaling systems.

In transport vehicles that are operated unmanned on tracks, it is necessary to give speed commands to the vehicle and to detect which section of the track the vehicle is on.

As a signaling method for this purpose, for example, the method shown in FIG. 1 is used.

This is one of the methods for sliding signal lines, and involves installing signal lines SW, SW2 along the track, dividing them into sections SC, SC2, and connecting a power source to the SC side on the ground. A DC voltage is sent to the signal line from E and resistor R. On the vehicle, R; Poison E. is connected to both ends of resistor R2 from the signal line via pantographs Pan, Pan2. This voltage is used as the speed command. To change the speed command, press R.
Or change the value of E. On the other hand, section S
There is a receiver REC on the C2 leg, and the received voltage is different when the train is on the line in the relevant section and when it is not, and when the train is on the line, R≠
Takego E. ‐‐‐‐‐‐‐{・'When there is no line E,
．． ......{2}, and a train is detected based on the difference.

By the way, this method simplifies the transmitter side (R,,E,) on the ground and the equipment on the vehicle, but if we consider the case where the speed command becomes zero, 'li formula = 0 and R, = NokaE
, = 0 is required, and if this is done, the receiving side will not be able to distinguish between when the train is on the line and when there is no vehicle. Therefore,
When this method is used, a method such as applying a bias to the speed command voltage is also used, but this method has the disadvantage of complicating the device. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vehicle signaling system that has a simple configuration, is highly reliable, and is capable of detecting the presence of a train regardless of the speed command.

Therefore, in the present invention, the speed command is outputted from the ground as in the past, and a system is used in which a signal in a format different from that of the speed command is used for train detection.

An embodiment of the invention is shown in FIG.

This system constantly oscillates an AC signal for train detection from onboard the train. In the figure, the same components as in FIG. 1 are given the same reference numerals. In the figure, the speed command is assigned to section SC. E from the side. is applied to the vehicle as a DC power source through resistors R, and reactor L, and is applied to both ends of resistor R2 through pantographs Pan, and Pan2.

The reactor is used to block an AC signal, which will be described later. Next, the presence of the train is detected using the pantograph Pan, ,
An AC voltage is applied to the signal lines SW, SW2 via Pan2, this is received on the section SC2 side, and the capacitor C3
The relay Ry is operated via the relay Ry. capacitor C2,
C3 is for blocking direct current for speed command. In this way, the speed command and train detection can be performed without interfering with each other. The speed command is normally controlled depending on the conditions of the inner track circuit section, but is not shown. In this configuration,
The receiving side can be simply configured with capacitor C3 and relay Ry, making it simple, and the transmitting side does not need to be biased even when the speed command is zero.
It gets easier.

Furthermore, the AC power supply on the vehicle may be one in which the AC power line voltage is simply divided by a transformer. FIG. 3 shows another embodiment of the invention.

In this embodiment, L and C in FIG. 2 are replaced by making the ground power source E, an alternating current source, and the on-board power source E2 a direct current source. Is the speed pattern voltage on the car the same as AC voltage?
Alternatively, it can be obtained by rectifying with a diode bridge D field. In this case, a resistor is not required compared to FIG. 2, so power consumption can be reduced. FIG. 4 shows another embodiment of the present invention with improved security.

This applies to the embodiment shown in FIG.
Ry, relay relay R, and relay power supply VR are added. 1. First, if we consider the case where the resistor R2 is disconnected, the maximum voltage of E is applied to both ends of R2, and the speed command is also maximum, which is on the dangerous side. However, in this case, an overvoltage is detected by the overvoltage relay OVR, so if the brakes are applied on the vehicle based on this, the situation becomes stable. Furthermore, if the pantograph breaks or leaves the line, the IJ Ray will turn off, and if this continues, the situation will change from being on the line to not being on the line, which is dangerous.

However, in this case, when the vehicle first enters beyond section SC2, the lb contact (Ry,) connected to Ry2
is turned off, so Ry2 is also turned off. Once turned off, the two contacts connected to Ry2 are turned off, so Ry2 is held off. Therefore, if we assume that the line is present when Ry2 is turned off, even if Ry2 is turned off due to track separation, Ry2
is not affected and is on the safe side. The operation of turning on Ry2 is automatically performed because the powder contact connected to the R ground is turned on when the train enters the next section and Ry3 is turned on. In this way, it is possible to protect against dangerous failures.

In addition, instead of doing this, simply release relay Ry slowly to remove the effect of a single time disconnection, and if Ry is turned off before Ry3 is turned on due to destruction of the pantograph, etc., it will be considered a failure and the entire relay will be released. It is also possible to make the signal stop, stop the lightning, and stop all military vehicles.

That is, when the track circuits are IT and 2T, logic is taken from the track presence signals of IT and 2T as shown in FIG.

This is based on the memory that IT is on the line in the flip-flop FF, and if IT becomes zero (away from the line) when 2T is zero (no line on the line), a failure signal is sent from the final stage exclusive OR EOR. D is output. Therefore, security measures should be taken based on this condition. FIG. 6 shows another embodiment of the present invention in which an AC signal for train detection is oscillated from the ground. The method of speed command using direct current is the same as that shown in FIG. 2, so its explanation will be omitted. Train detection is done via signal lines SW, SW2 via capacitor C.
The AC signal given to the vehicle's pantograph Pan,,
This is done by short-circuiting the capacitor C2 through Pa. Therefore, when the train is on the line, the relay Ry is off, and when the train is not on the line, the relay Ry is turned on, and the presence of the train on the line is detected. Also for this configuration,
It goes without saying that it is possible to configure a signal system in which the AC power source and the DC power source are swapped, and L and C are swapped.

Since these configurations are of a closed circuit type (when the line is not present, the circuit is closed and the relay is energized), fail-safe operation can be achieved without providing a relay relay in the receiving means on the ground side. In the above embodiment, sections SC, . . . SC2 were provided only on one of the signal lines SW, . . . SW2, but they can be provided on both signal lines to improve reliability.

Further, one of the signal lines SW, SW2 may also be used as a power line (trolley). Further, when the train detection signal generated from the train is cut off, a means for improving the safety level by applying the brakes to the vehicle may be used in combination. As described above, according to the present invention, a vehicle signal system that can perform speed commands and train presence detection with a simple configuration can be obtained.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 shows a conventional embodiment, Fig. 2 shows an embodiment of the present invention, and Figs. 3, 4, and 6 show other embodiments of the present invention. FIG. 5, which is a diagram showing an embodiment, is a diagram for explaining the present invention. SW,, SW2...Signal line, SC,, SC2...Section, E,...Ground signal power supply, E2...Onboard signal power supply,
Pan,,Pan2...Pantograph,R,,R2...Resistor,L1,L2,L3・"Reactor,C,,C2,C
3. To the river capacitor Ry,, Ry2, Ry3...Relay. Figure 2 Figure 3 Figure 4 Figure 5 Chrysanthemum diagram

Claims (1)

[Scope of Claims] 1. A system that divides signals laid along a track into sections and uses the signal lines to issue speed commands to vehicles within the section and to detect the presence of trains within the section. , speed command means provided on the ground and transmitting one of the electric signals of direct current and alternating current to the signal line; and means provided on the vehicle to receive the one of the electric signals transmitted to the signal line. , a means installed on the ground for transmitting the other electric signal of DC and AC from one end of the section to the signal line; a means installed on the vehicle for short-circuiting the other electric signal; and a means installed on the ground for short-circuiting the other electric signal; and track presence detection means for receiving the other electrical signal from the signal line at the other end of the signal line. 2 The signal line laid along the track is divided into sections, and the signal line is used to give speed commands to vehicles within the section and to detect the presence of trains within the section, and is installed on the ground. Speed command means for transmitting one of DC and AC electric signals to the signal line;
means provided on the vehicle for receiving one of the electrical signals transmitted to the signal line; means provided on the vehicle for transmitting the other electrical signal of direct current and alternating current to the signal line; A vehicle signal device comprising: a track presence detection means for receiving the other electrical signal from the signal line.