JP2582263B2 - Transmission control device for switchgear security device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for controlling a traffic signal such as a railway traffic signal or a point switch, when controlling a traffic signal between a security control device and a security device. The present invention relates to a transmission control device for performing transmission and thereby controlling security devices.

[Conventional technology]

Taking an example railway security equipment, as shown a block diagram in Figure 4, the interlocking device 2 provided to the equipment room in 1, point lock unit 3 ₁ 3n was distributed to each site, and traffic lights 4 _{1 to} 4m
Multi-conductor cable 5 ₁ through 5n and each individual between the security device and the like
As well as connected by 6 ₁ ～6M, point lock unit 3 ₁ for supplying an AC power to be applied to the drive motor of the 3n, provided lightning protection transformer PT to the apparatus chamber 1, thereby the high voltage power source HV for example AC
The voltage is reduced to 10V and supplied to each site via the circuit breaker CB and the power supply line 7.

In addition, the interlocking device 2 includes, for example, a signal lamp transformer ST.
The AC power supply LV of AC100V is stepped down to 30V and supplied. The AC power supply of 30V is supplied from the continuous device 2 to each of the traffic lights 4 ₁ to 4.
m.

Normally 6-core cable is used for the multi-core cable 5 ₁ through 5n, as the multi-core cable 6 ₁ ～6M, the number of cores of the multi-core cable according to the current readings +1 traffic light 4 ₁ ~4m used .

[Problems to be solved by the invention]

However, in the conventional construction shown in FIG. 4, the multi-core cable 5 ₁ through 5n, takes a connection by 6 ₁ ~6m, these prices and construction costs become expensive, effects of lightning surges by increasing laying length In addition, there is a possibility that the cables may be easily affected and erroneous control may occur due to mutual contact between the cables, and furthermore, it is difficult to quickly restore the cables in the event of a cable disconnection accident.

[Means for solving the problem]

In order to solve the above-mentioned problem, the present invention is constituted by the following means.

That is, the equipment room (1) is composed of a plurality of terminals (12) and a power supply line (7). The equipment room includes a controller (11) and a transformer (PT). A plurality of terminals are connected to the room, and a plurality of terminals are branch-connected to the room. The controller modulates a control signal for controlling a switch provided from the outside and sends the modulated signal to a power supply line. Is for transmitting a power supply for operating the traffic light to the power supply line, the terminal device is for demodulating a signal transmitted from the controller via the power supply line, and is provided with a switch (3) and a traffic light (4). And a signal light transformer (ST) are connected, and the switch is supplied with power by being connected to a branch to a power supply line, and is supplied with a signal related to the switch demodulated by a terminal and controlled. And the signal is demodulated by the terminal. Together with the signal of the traffic signal relationship is controlled are supplied, in which the display on the power supply line by a power supplied through a transformer for the branch connected signal is configured to be performed.

[Action]

Therefore, if there is a power line or the like laid in common between the security control device and the security device, the control signal is transmitted without laying each individual multi-core cable, and the control by this is performed. Can be performed.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings showing examples.

FIG. 1 is a block diagram showing the entire configuration, in which a controller 11 is provided in the equipment room 1, terminals 12 _{1 to} 12n and signal lamp transformers ST _{1 to} STn are provided in each site, an interlocking device 2 and a controller. 11 constitutes a safety control device by using the power line 7 which is laid in common to between this and the point lock unit 3 ₁ 3n and traffic 4 ₁ to 4n, the controller 11 and the terminal 12 ₁ performs transmission and reception of control signals and display signals between the ～12N, the controller 11 3 ₁ terminal unit 12 ₁ ～12N translocations iron machine in accordance with a control signal transmitted from ~3n and traffic 4 ₁ to 4n performs control of the display signal indicating the situation to the transmitting terminal device 12 ₁ ~12n is, by receiving via a control unit 11 of this interlocking device 2 is summer and performs confirmation of control situation.

The signal transmission and reception between the controller 11 and the terminal unit 12 ₁ ~12n is frequency shift keying by the control signal or display signal carrier of 50～300KHz, power that communicates the modulated wave to the power supply line 7 On the other hand, the transmission is performed by superimposing on the current and transmitting the signal by demodulating the received modulated wave, thereby taking out the control signal or the display signal. And CRC
For example, a pulse signal of about 2400 BPS to which a code or the like is added is used.

FIG. 2 is a block diagram of the controller 11, in which an input / output unit 21 having a fail-safe property, a control unit 22, and
When a control unit 22 using a microcomputer creates a pulse signal according to a control signal given from the interlocking device 2 via the input / output unit 21 and gives it to the transmission unit 23, the unit 23 , A carrier wave is modulated by a pulse signal, and the modulated wave is transmitted to the power supply line 7 via an internal coupling circuit.

The modulation wave modulated by the display signal from the terminal unit 12 ₁ ~12n is received by the transmission unit 23 through the power line 7, the display signal by the control unit 22 from the summer and the pulse signal is made the demodulation wherein It is provided to the interlocking device 2 via the input / output unit 21.

Figure 3 is a block diagram of the terminal device 12 ₁ ~12n, FIG. 2 and similar transmission unit 31, the control unit 32, and is constituted by the output unit 33, from the controller 11 via a power supply line 7 The modulated wave is received by the transmission unit 31 and demodulated, and the output is decoded by the control unit 32. If the output is an address code addressed to itself, the subsequent pulse signal is converted into a control signal, and the switch is turned on. 3 or the traffic light 4, thereby performing control.
In response to a display signal indicating the current state from the switch 3 or the traffic signal 4 being given via the input / output unit 33, the control unit 32 creates a pulse signal in the same manner as the controller 11, and thereby the transmission unit
At 31, the carrier is modulated and transmitted to the power supply line 7.

Therefore, the control units 22 and 32 perform parallel / serial conversion between the control signal and the display signal and the pulse signal, and also perform transmission / reception control by half-duplex communication. A loop check for checking is performed, and if it is determined to be abnormal, control is performed on the safe side to ensure fail-safe performance.

In addition, various control functions can be added by using a micro computer for the control units 22 and 32.

That is, the rolling for the iron machine 3 ₁ 3n, without simultaneous power up of the drive motor to distribute inrush current generation time of startup as sequentially turned reduce the required capacity of the overall AC power supply Can be done.

On the other hand, for traffic light 4 ₁ to 4n, with performing the cross-sectional core detector lights unit, for example, the lower current-control to orange current-Invite blue lights unit when the blue current-has long been cross core In addition, the power supply of the lamp can be phase-controlled to minimize the inrush current to the filament and extend the life of the lamp.

In addition, in FIG. ₁ , 30V AC power is obtained from the power supply line 7 via the signal lamp transformers ST1 to STn for each site.
This is supplied to each individual to the signal unit 4 ₁ to 4n, each transformer ST
Since ₁ ～STn is summer and dedicated for each traffic signal 4 ₁ to 4n, labor to perform voltage adjustment according to conventional as cable length is eliminated.

Incidentally, in general, in the vicinity of the point lock unit 3 ₁ 3n traffic 4 ₁
~ 4n are provided, so that a terminal 12
The ones that may be provided _{1 ~12n.}

Therefore, the necessity of laying a multi-core cable between each security control device and each security device is eliminated, and the necessary costs and construction costs can be omitted. As a result, measures for cable disconnection accidents and the like are greatly reduced, so that overall economy and reliability are improved.

2 and 3 may be of a known configuration having a fail-safe property for a railway signal security device, thereby providing an overall fail-safe property.

However, in addition to using the power supply line 7, an arbitrary line may be used as long as the line is equivalent, and the configurations in FIGS. 2 and 3 can be variously modified, for example, selection according to conditions is arbitrary. It is.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, a large number of cable lays between the security control device and each security device is not required, and the economy and reliability are improved, and the fail-safe property can be secured. A remarkable effect can be obtained in transmission control of various security devices.

[Brief description of the drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a block diagram of the entire structure, FIG. 2 is a block diagram of a controller, and FIG.
The drawing is a block diagram of a terminal, and FIG. 4 is a block diagram of a conventional example. 2 ...... interlock device, 3 ₁ 3n ...... point lock machine, 4 ₁ to 4n ...... traffic, 7 ...... power line, 11 ...... controller, 12 ₁ ~12n ...... terminal, 22, 32 ... ... Control unit, 23,31 ... Transmission unit.

Claims (1)

(57) [Claims] An equipment room (1), a plurality of terminals (12),
The equipment room (1) is composed of a controller (11) and a transformer (PT). One end of the power supply line (7) is connected to the equipment room (1). A plurality of terminals (12) are connected to the branch, and the controller (11) modulates a control signal for switch control supplied from the outside and sends it to the power supply line (7). The transformer (PT) sends the power for operating the traffic light (4) to the power supply line (7), and the terminal (12) transmits the power supply line (7) from the controller (11). And a switch (3), a signal (4), and a signal lamp transformer (ST) are connected, and the switch (3) is connected to a power line. Power is supplied by being connected to the branch at (7), and the terminal (1)
The switch-related signal demodulated in 2) is supplied and controlled. The signal (4) is supplied with the signal-related signal demodulated by the terminal device (12) and is controlled. 7)
A transmission control device for a switchgear safety device, wherein the display is performed by a power supply supplied via a signal transformer (ST) branch-connected to the switch.