CN208110295U - A kind of control circuit of signal system safety power supply - Google Patents
A kind of control circuit of signal system safety power supply Download PDFInfo
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- CN208110295U CN208110295U CN201721880902.4U CN201721880902U CN208110295U CN 208110295 U CN208110295 U CN 208110295U CN 201721880902 U CN201721880902 U CN 201721880902U CN 208110295 U CN208110295 U CN 208110295U
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- control circuit
- delay machine
- power supply
- machine control
- host module
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Abstract
The utility model relates to a kind of control circuits of signal system safety power supply, including the first delay machine control circuit, the second delay machine control circuit and execution unit, signal system includes two host modules, first host module, the second host module pass through the first delay machine control circuit respectively, the second delay machine control circuit is connect with execution unit, the input terminal of the execution unit is connected with a vehicle-mounted power supply, and the output end of execution unit is connect by power-switching circuit with the first host module and the second host module.When system failure, the power supply of two owner's machines is simultaneously switched off, guarantees thoroughly to disconnect power supply, security risk is not present；And host detects the state of two execution units simultaneously, can be oriented to secure side when the Host Detection of principal series is to execution unit abnormal state；After system enters delay machine state, it can be maintained at delay machine state, re-powering by manual mechanical switch K4 to system just can make system exit delay machine state, guarantee the safety of system.
Description
Technical field
The utility model relates to railway security power supply control technology fields, and in particular to a kind of signal system safety power supply
Control circuit.
Background technique
In railway signal control system, safety power supply control is the key point of design, it is ensured that in emergency circumstances can
Power supply is disconnected fast and reliablely, guarantees safety, rather than carries out active and standby system's switching.Safety power supply control at present is usually each system
Host module respectively controls this power supply for being, only disconnects this power supply for being upon opening, in addition a system will continue to work.In the presence of disconnected
Halfway problem is opened, there is security risk.
Utility model content
The purpose of this utility model is to provide a kind of control circuits of signal system safety power supply, when system failure,
The power supply of two systems is simultaneously switched off, guarantees thoroughly to disconnect power supply, improves the safety of system.
To achieve the above object, the utility model uses following technical scheme：
A kind of control circuit of signal system safety power supply, including the first delay machine control circuit, the second delay machine control circuit
And execution unit, signal system include two host modules, the first host module, the second host module pass through the first delay machine respectively
Control circuit, the second delay machine control circuit are connect with execution unit, and the input terminal of the execution unit is connected with a vehicle-mounted power supply, and is held
The output end of row unit is connect by power-switching circuit with the first host module and the second host module；
First host module controls the work of the first delay machine control circuit by square-wave signal, is controlled by the first delay machine
The connection of circuit control execution unit and power supply realizes power supply simultaneously to the power supply shape of the first host module and the second host module
State；
Second host module controls the work of the second delay machine control circuit by square-wave signal, is controlled by the second delay machine
The connection of circuit control execution unit and power supply realizes power supply simultaneously to the power supply shape of the first host module and the second host module
State.
Further, the execution unit includes the first relay and the second relay, the first delay machine control circuit
It is connect with the coil of the first relay, the second delay machine control circuit is connect with the coil of the second relay, first relay
It is connected to power supply with one end of the second relay switch, the other end of the switch is through power-switching circuit and the first host module
It is connected with the feeder ear of the second host module.
Further, the first delay machine control circuit includes DC/DC module, comparator, sound conversion circuit, first opens
It closes, second switch and third switch, the input terminal of the DC/DC module are the input terminal of the first delay machine control circuit, DC/DC mould
The output end of block is connect by first switch with the coil of the first relay, the noninverting input and anti-phase input of the comparator
End is connected through peripheral circuit and the output end of first switch respectively, and the output end of comparator and the control terminal of second switch connect,
The first end of the second switch is connect with the first end that the coil of the first relay and third switch, and second end is opened with third
The second end of pass connects, the second end ground connection of the third switch, the input terminal of the sound conversion circuit and the first host mould
The output end of block connects, and output end is connect with the control terminal that third switchs.
As shown from the above technical solution, the control circuit of signal system safety power supply described in the utility model, works as system
When delay machine, the power supply of two systems is simultaneously switched off, guarantees thoroughly to disconnect power supply, security risk is not present；And host detects two simultaneously
The state of execution unit can be oriented to secure side when the Host Detection of principal series is to execution unit abnormal state；When system enters
To after delay machine state, it can be maintained at delay machine state, system can just be made by only re-powering by manual mechanical switch K4 to system
Delay machine state is exited, guarantees the safety of system.
Detailed description of the invention
Fig. 1 is the circuit block diagram of the utility model；
Fig. 2 is the circuit diagram of the delay machine control circuit of the utility model.
Specific embodiment
The utility model is described further with reference to the accompanying drawing：
As shown in Figure 1, the control circuit of the signal system safety power supply of the present embodiment, including the first delay machine control circuit 1,
Second delay machine control circuit 2 and execution unit 3, the signal system of the present embodiment include two host modules, the first host module
4, the second host module 5 is connect by the first delay machine control circuit 1, the second delay machine control circuit 2 with execution unit 3 respectively, is held
The input terminal of row unit 3 is connected with a vehicle-mounted power supply, and output end is connected and the first host module 4, second by power-switching circuit
Host module 5 connects.
As shown in Figure 1, 2, execution unit 3 includes the first relay K1 and the second relay K2, the first delay machine control circuit 1
It is connect with the coil of the first relay K1, the second delay machine control circuit 2 is connect with the coil of the second relay K2, the first relay
One end of K1 and the second relay K2 switch connects to power supply, the other end warp of the first relay K1 and the second relay K2 switch
Power-switching circuit 6 is connect with the feeder ear of the first host module 4 and the second host module 5.
First host module 4 and the second host module 5 control the first delay machine by the control of dynamic square-wave signal respectively and control
Circuit 1 and the work of the second delay machine control circuit 2；First delay machine control circuit 1 and the second delay machine control circuit 2 control execution respectively
Relay in unit 3 is attracted, and is controlled power supply by execution unit 3 and is supplied simultaneously to the first host module 4, the second host module 5
Electricity；First host module 4 or the second host module 5 in real time detect the switch state of execution unit 3, when the first host mould
When block 4 or the second host module 5 break down, stop the output of dynamic square-wave signal, disconnects the relay of the work of execution unit 3
Device realizes that the first delay machine control circuit 1 and the second delay machine control circuit 2 power off simultaneously.
When upper electrical initiation, delay machine control circuit meeting control execution unit 3 is in attracting state, to maintain the initial of host
Change.If host initialization failure within a certain period of time, delay machine control circuit can disconnect the letter of the control to execution unit 3 automatically
Number, release conditions are to guarantee safety.After the completion of host initialization for when I system is principal series, the first host at this time
Module 4 issues dynamic square-wave signal, and the second host module 5 does not issue dynamic square-wave signal.
First host module 4 sends dynamic square-wave signal, by the first delay machine control circuit 1 control execution unit 3 after
Electric appliance K1 is attracted, and the 110VDC after relay K1 control supplies the first host module 4 and the work of the second host module 5, this
When execution unit K2 be in release conditions；The host of two systems detects the state of execution unit K1 and K2 simultaneously, when first
When host module 4 breaks down or detects that failure needs delay machine, stop dynamic square-wave signal output, execution unit after
Electric appliance K1 release, to realize that two be that power supply simultaneously switches off.Similarly when the second host module is principal series.
As shown in Fig. 2, the first delay machine control circuit includes DC/DC module 6, comparator U1, sound conversion circuit U2, first
Switch K4, second switch K2, third switch K3, DC/DC module 6 input terminal be the first delay machine control circuit 1 input terminal,
The output end of DC/DC module 6 is connect by first switch K4 with the coil of the first relay K4, the input in the same direction of comparator U1
End is connect by resistance R2 with the output end of first switch K4, which is simultaneously grounded by resistance R3, comparator U1's
Inverting input terminal is connect by resistance R1 with the output end of first switch K4, which is simultaneously grounded through capacitor C1.Compare
The output end of device U1 is connect with the control terminal of second switch K2, the coil of the first end of second switch K2 and the first relay K1 and
The first end of third switch K3 connects, and second end is connect with the second end of third switch K3, the second termination of third switch K3
Ground, the input terminal of the sound conversion circuit 7 are connect with the output end of the first host module 4, the output end of sound conversion circuit 7 with
The control terminal of third switch K3 connects.The switch K2 and switch K3 of the present embodiment can use optocoupler, metal-oxide-semiconductor, relay or three
Pole pipe.
A indicates the square-wave signal connecting pin of the second host module 5 in Fig. 2, and B indicates the square-wave signal of the first host module 4
Connecting pin, C indicate that returning for the second host module 5 surveys connecting pin, and D indicates that returning for the first host module 4 surveys connecting pin.
DC/DC module 6, for electricity required for the work of delay machine control circuit will to be converted to without the VCC110V of control
Pressure, the host of signal system pass through Dynamic Signal（Square wave）Mode by sound conversion circuit U2 by control signal be converted into surely
Fixed level signal is to control switch K3.The mode that can stop Dynamic Signal when system needs to disconnect power supply disconnects
K1。
Beginning is powered on, the reference voltage for the comparator that closure mechanical switch K4, resistance R2 and resistance R3 partial pressure is constituted is rapid
It establishing, while capacitor C1 starts to charge by resistance R1, comparator U1 exports low level at this time, and driving switch K2 is closed,
To closing relay K1, signal system is started to work.When voltage at the both ends capacitor C1 is higher than the voltage at the both ends resistance R3, than
Compared with device U1 output switching activity, relay K1 is disconnected, if signal system does not start dynamic signal output normally before this, is
System is by power loss, to guarantee safety.If system can normally start before this and dynamic signal output, signal system can lead to
It crosses sound conversion circuit U2 and exports a dead level, control switch K3 closure maintains signal to control relay K1 closure
The power supply of system.
Sound conversion circuit U2 is internal type failure safe, it can convert dynamic control signal to dead level control
Signal.When there is no Dynamic Signal to input or faults itself, dead level signal automatic control switch K3 disconnection can be exported, is made
Execution unit is in release conditions, to disconnect the power supply of two systems to guarantee safety.When signal system discovery danger needs to power off
When, it can be by way of stopping Dynamic Signal, by disconnecting the control loop of K2 block system relay K1, thus switching signal system
The power supply of system.After system enters delay machine state, only system is re-powered by manual mechanical switch K4 can just make be
System exits delay machine state, to guarantee safety.
The second delay machine control circuit 2 of the present embodiment is identical as the physical circuit of the first delay machine control circuit 1, and work is former
Reason is also identical, and the difference with the first delay machine control circuit is that the first end of switch K2 connects relay K2, sound conversion circuit U2
Input terminal connection be the second host module 5.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this
The various changes and improvements that the technical solution of utility model is made should all fall into the protection that the utility model claims book determines
In range.
Claims (4)
1. a kind of control circuit of signal system safety power supply, it is characterised in that：Including the first delay machine control circuit, the second delay machine
Control circuit and execution unit, signal system include two host modules, and the first host module, the second host module pass through respectively
First delay machine control circuit, the second delay machine control circuit are connect with execution unit, the input terminal and vehicle mounted electric of the execution unit
The output end of source connection, execution unit is connect by power-switching circuit with the first host module and the second host module；
First host module controls the work of the first delay machine control circuit by square-wave signal, passes through the first delay machine control circuit
The connection of control execution unit and power supply realizes power supply simultaneously to the power supply state of the first host module and the second host module；
Second host module controls the work of the second delay machine control circuit by square-wave signal, passes through the second delay machine control circuit
The connection of control execution unit and power supply realizes power supply simultaneously to the power supply state of the first host module and the second host module.
2. the control circuit of signal system safety power supply according to claim 1, it is characterised in that：The execution unit packet
The first relay and the second relay are included, the first delay machine control circuit is connect with the coil of the first relay, the second delay machine
Control circuit is connect with the coil of the second relay, and one end of first relay and the second relay switch and power supply connect
It connects, the other end of the switch is connect through power-switching circuit with the feeder ear of the first host module and the second host module.
3. the control circuit of signal system safety power supply according to claim 2, it is characterised in that：The first delay machine control
Circuit processed includes DC/DC module, comparator, sound conversion circuit, first switch, second switch and third switch, the DC/DC
The input terminal of module is the input terminal of the first delay machine control circuit, the output end of DC/DC module by first switch with first after
The coil of electric appliance connects, and the noninverting input and inverting input terminal of the comparator are defeated through peripheral circuit and first switch respectively
Outlet connection, the output end of comparator and the control terminal of second switch connect, the first end of the second switch and the first relay
The first end connection of coil and the third switch of device, second end are connect with the second end that third switchs, the third switch
Second end ground connection, the input terminal of the sound conversion circuit are connect with the output end of the first host module, output end and third
The control terminal of switch connects.
4. the control circuit of signal system safety power supply according to claim 2, it is characterised in that：The second delay machine control
Circuit processed is identical as the physical circuit of the first delay machine control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880902.4U CN208110295U (en) | 2017-12-28 | 2017-12-28 | A kind of control circuit of signal system safety power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880902.4U CN208110295U (en) | 2017-12-28 | 2017-12-28 | A kind of control circuit of signal system safety power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208110295U true CN208110295U (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721880902.4U Active CN208110295U (en) | 2017-12-28 | 2017-12-28 | A kind of control circuit of signal system safety power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942647A (en) * | 2017-12-28 | 2018-04-20 | 合肥工大高科信息科技股份有限公司 | A kind of control circuit and its control method of signal system safety power supply |
-
2017
- 2017-12-28 CN CN201721880902.4U patent/CN208110295U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942647A (en) * | 2017-12-28 | 2018-04-20 | 合肥工大高科信息科技股份有限公司 | A kind of control circuit and its control method of signal system safety power supply |
| CN107942647B (en) * | 2017-12-28 | 2024-03-22 | 合肥工大高科信息科技股份有限公司 | Control circuit and control method for signal system safety power supply |
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