JPS5943162Y2 - Power supply blockage control device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a power supply blockage control device using a check-in/check-out method for, for example, an automatically-driving rail vehicle.

As a conventional power supply blockage control device of this type, for example, the first
There is something like the one shown in the figure.

That is, the track 1 is divided into several power supply blocked sections (hereinafter abbreviated as "zones") 2, and a check-in signal sensor 3 and a check-out signal are installed at the boundary P between the zones to detect the passage of a vehicle 2 and emit a signal. A sensor 4 is provided, and the output of a vehicle memory relay circuit 5 inputting these detection signals cuts off the power supply to the blocked section immediately behind the blocked section where a vehicle is always present, thereby eliminating the risk of a rear-end collision with a vehicle. .

FIG. 1 is a relay circuit diagram extracting the relationship between the Nth zone (N is a positive integer) zn and the zones zn+1 and Zn-□ before and after it, and shows the relationship between the check-in signal sensor 3.
Checkout signal sensor 4. Vehicle memory relay circuit 5
etc. have the same configuration for each zone, and in order to distinguish them for each zone, each code has, for example, 3nt 3H+l s
Add a zone number like 3H-□.

Check-in signal sensor 3 (3n+t +3Hs3H
-□・・・・・・・・・) and checkout signal sensor 4 (4n+1, 4n, 4n-1...
) may be a contact type such as a limit switch operated by an actuator, or a non-contact type using a proximity sensor, phototube, etc., as long as it can detect the passage of the vehicle 2.

For example, the check-in signal sensor 3 is a receiver that receives signals such as light, sound, and radio waves emitted from a transmitter (not shown) installed in the head of the vehicle 2, and the check-out signal sensor 4 is installed in the tail of the vehicle 2. The receiver receives a signal which is of course different from the check-in signal emitted by a similar transmitter (not shown) provided.

When the vehicle 2 enters the N-th zone Zn-1 from the N-1 zone Zn-1, the check-in signal sensor 3n turns off its normally closed contact 3nb and de-energizes the relay 6n of the vehicle memory relay circuit 5. Cut it off temporarily.

In addition, when the vehicle 2 escapes from the Nth zone Z to the N+1th zone Zn+1, the checkout signal secessor 4n turns on its normally open contact 'na, energizes the relay 7n of the vehicle memory relay circuit 5, and temporarily turns it on. to operate.

FIG. 2 is a circuit diagram showing a specific example of a vehicle memory relay circuit 5n, in which a relay 8n having a self-holding contact sna
and connect relays 6 and 7 in series with this relay 8n.
Normally closed contacts 6nb and 7nb of n are connected to a power source.

Therefore, when the vehicle 2 enters the N-th zone Zn from the N-1 zone Zn-□, the relay 8n is activated, and the relay 8n is self-held until the vehicle 2 escapes from the N-th zone Zn.

Then, the vehicle moves from the Nth zone Zn to the N+1st zone zn+
, the normally closed contact 7nb of the relay 7n is temporarily turned off, and the self-holding is released.

FIG. 3 is a circuit diagram showing another specific example of the vehicle memory relay circuit 5n, in which a keep relay 9n is used, and this keep relay 9 is connected to the normally closed contact 6nbn of the relay 6.
n and the normally open contact 7na of relay 7.

Therefore, when the vehicle 2 enters the Nth zone Zn from the N-1st zone zn-□, the keep relay 9n is set, and the vehicle 2 enters the N+1st zone zn+1 from the Nth zone Zn.
It is reset when exiting to.

In other words, in either Figure 2 or Figure 3, it is the Nth zone Z.
The relay 8n or keep relay 9n operates to close its output contact (not shown) only when the vehicle 2 is present in When the vehicle 2 is present, it is possible to take measures such as not supplying power to the N-1th zone Zn-□, which is one zone in front of the vehicle 2.

However, in such conventional check-in/check-out blockage control devices, the check-out signal of one zone and the check-in signal of the next zone are sent independently to each vehicle memory relay circuit. Therefore, if each signal sensor fails, especially if only the check-out signal sensor in the previous section of two adjacent sections works and the check-in signal sensor in the next section does not, the vehicle may appear to be When the vehicle disappears in the middle of nowhere, it is impossible to control the vehicle to block the vehicle following it, which poses a very dangerous problem, as there is a risk of a rear-end collision.

This idea was made in view of the above points, and the check-out signal of the previous section of two adjacent sections and the check-in signal of the next section are transmitted by a switching type contact having the same or common movable contact. The purpose is to solve the conventional problems by using contacts to communicate to the vehicle memory relay circuit.

Hereinafter, embodiments of this invention will be described with reference to the accompanying drawings.

FIG. 4 is an explanatory diagram showing one embodiment of this invention, and the first
The same parts as those in the figures are given the same reference numerals, and their explanation will be omitted.

Further, the specific circuit of the vehicle memory relay circuit 5 is also the same as the circuit shown in FIG. 2 or FIG. 3.

In Figure 4, 10 (10n+□, 10n, 10n-□...
...) is a passage sensor that detects that the vehicle 2 has passed the boundary P, and this sensor can detect the passage of the vehicle 2 in the same way as the check-in signal sensor 3 or the check-out signal sensor 4 in Fig. 1. Either a contact type or a non-contact type may be used.

11 (11n+□, 11n, 11n-□) is a switching type contact that switches a normally closed contact (so-called B contact) 11b and a normally open contact (so-called A contact) 11a with the same or common movable piece, and is a C contact. It is called.

The switching contact 11 may be a switching contact of a relay that operates in response to a signal from the passing sensor 10, or the passing sensor 10 itself may be a switch having the switching contact 11, such as a C contact type limit switch. It's okay.

Among the switching contacts 11n, 11n+1..., the normally closed contacts 11nb, 11(n+□)b,... are used as check-in signals, and the normally open contacts 11na, 11(n)
＋□) a, ...... is a checkout signal,
It is sent to each vehicle memory relay circuit 5.

In FIG. 4, the switching contact 11n is operated by the output of the passing sensor 10n located almost at the boundary between the N-1 zone Zn-1 and the N-th zone 2, and the signal generated by opening the normally closed contact 11nb is the N-th zone Zn-1. This is the check-in signal of the sea 72, and the signal caused by the normally open contact 11na closing is the Nth
-1 This is the checkout signal for zone Zn-1.

Similarly, the vehicle 2 passing approximately the boundary between the Nth zone Zn and the N+1th zone Zn+□ is detected by the passing sensor 10n+1.

This detection output operates the switching contact 11n+□, and the signal that opens the normally closed contact 11(n+1)b of the switching contact 11n+1 is the check-in signal of the N+1 zone Zn+□, and the normally open contact 11(n+□)a The close signal becomes a checkout signal for the Nth zone Zn.

Therefore, if the vehicle memory relay circuit 5 is the circuit shown in FIG.
When passing the boundary P of zone Zn, the vehicle memory relay circuit 5n for the Nth zone Z connects the normally closed contact 7n of the relay In.
b remains closed, and since the relay 6n is de-energized, its normally closed contact 6nb is closed, so the relay 8n is activated and closes its self-holding contact 8na.

On the other hand, in the vehicle memory relay circuit 5n-1 (not shown) for the N-1 zone Zn-1, the relay In-1 is energized to open its normally closed contacts, and the relay 8n corresponding to the relay 8n in FIG. -1's self-hold is released.

After that, the vehicle 2 moves to the Nth zone Zn and the N+1th zone zn.
When passing the +1 boundary P, the switching contact 11n+ is operated by the output of the passing sensor 10, opening the normally closed contact 11(n+□)b, and switching the normally open contact 1
1(n+□) Close a.

As a result, the relay 7n of the vehicle memory relay circuit 5 for the Nth zone zn is activated and its normally closed liquid point is temporarily opened, so that the self-holding of the relay 8n is released.

Further, when the vehicle memory relay circuit 5 is a circuit using the keep relay shown in FIG. 3, for example, in the vehicle memory relay circuit 5n for the Nth zone zn, when the vehicle 2 enters the Normally closed contact 6n of relay 6n
b is closed, keep relay 9n is set, and vehicle 2 is in the Nth position.
When exiting the zone, normally open contact 7na of relay 7 closes and resets the keep relay.

That is, in any case, only when the vehicle 2 is present in the Nth zone Zn, the relay 8n is in the self-holding state or the keep relay 9n is in the set state, and its output contact (not shown) is closed to stop the vehicle. Output existence information.

Therefore, by this output, the N-th
It is possible to take measures such as not supplying power to one zone Zn-1 (blocking the power supply).

The operation of such vehicle memory relay circuit 5 is similar to the conventional example described above.

However, in the power supply blockage control device according to this invention,
Since the check-in signal and the check-out signal are generated by the same or common switching contact 11, in order to generate the check-out signal for a zone where the normally open contact 11a is closed, the normally closed contact 11b must be used. When it opens, the check-in signal for the zone immediately in front of it must be on.

If a checkout signal is not issued, the zone immediately behind that zone remains cut off from power supply.

As explained above, according to this invention, the check-out signal for the previous section of two adjacent sections and the check-in signal for the next section are generated using the same switching contact. The former is processed on the normally open contact side, and the latter is processed on the normally closed contact side, so the check-in signal for the next section is always output before the check-out signal from one section is output, which is different from the conventional method. It is impossible for vehicle presence information to disappear from any section by issuing only such a checkout signal.

Therefore, especially when a closed section is established based on vehicle presence information, a very beneficial effect in terms of safety can be obtained in that a rear-end collision with a following vehicle cannot occur.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of a conventional occlusion control device, Figures 2 and 3
The figures are circuit diagrams showing different specific examples of vehicle memory relay circuits, and FIG. 4 is an explanatory diagram showing one embodiment of this invention. 1... Track, 2... Vehicle, 3...
... Check-in signal sensor, 4 ... Check-out signal sensor, 5 ... Vehicle memory relay circuit, 10 ... Passage sensor, 11 ... Switchable type Contact point, 2...Closed section, P...Closed section boundary point.

Claims (1)

[Scope of utility model registration request] In a power supply blockage control device based on a check-in/checkout method, a vehicle operates both of the blocks in order to generate a checkout signal at the exit of a blockage section and a check-in signal at the entrance of a blockage section into which the vehicle should enter next. A switching contact is provided that operates when passing through the boundary of the closed section, the check-out signal is generated on the normally open contact side of the switching contact, and the check-in signal is generated on the normally closed contact side of the switching contact. A power supply blockage control device characterized in that: