CN105187049B - The dynamic acquisition circuit of fault-safety principle and the device of fault-safety principle - Google Patents
The dynamic acquisition circuit of fault-safety principle and the device of fault-safety principle Download PDFInfo
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- CN105187049B CN105187049B CN201510432442.8A CN201510432442A CN105187049B CN 105187049 B CN105187049 B CN 105187049B CN 201510432442 A CN201510432442 A CN 201510432442A CN 105187049 B CN105187049 B CN 105187049B
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Abstract
The present invention provides a kind of dynamic acquisition circuits of fault-safety principle, including：Relay contact unit, optical coupling unit, pulse input unit and signal gathering unit.The optical coupling unit includes the first photoelectric coupling subelement and the second photoelectric coupling subelement.The first photoelectric coupling subelement is connect with the second photoelectric coupling subelement, the relay contact unit is connect with the optical coupling unit, the pulse input unit is connect with the first photoelectric coupling subelement, and the signal gathering unit is connect with the second photoelectric coupling subelement.The present invention also provides a kind of device of the fault-safety principle for judging relay contact working condition, solves fault in the prior art and be oriented to the uncertain technical problem of state.
Description
Technical field
The present invention relates to technical field of semiconductors, in particular to a kind of dynamic acquisition circuit of fault-safety principle
And the device of fault-safety principle.
Background technology
In the operation of rail traffic, the safety and reliability of system seems particularly important, especially high-speed railway
Rapid development, the reliability of signalling arrangement will directly affect the safety of rail traffic, so can for the safety of signalling arrangement
There is supreme importance by property control.To ensure that safety, the control of signalling arrangement must satisfy the original of fault-safety principle
Then.
The principle of fault-safety principle specifically judges signal in rail traffic by acquiring the contacts status of relay
State to meet the mechanism of fault-safety principle when one or more of Acquisition Circuit electronic component damages, to
Ensure safe driving.
The contacts status for acquiring relay using the circuit described in Fig. 1 in the prior art, when contact S is closed, optocoupler
In phototriode conducting, the collector of phototriode exports low level.It is photosensitive in optocoupler when contact S is disconnected
Triode ends, the collector of phototriode.CPU judges relay by the level of the collector of acquisition phototriode
The state of node.Circuit shown in FIG. 1 has the disadvantages that：When the light emitting diode of resistance R5 open failures or optocoupler damages
When, the collector of the phototriode of optocoupler will collect always high level, and CPU can be judged as that relay contact disconnects, lead
Cause the condition adjudgement of mistake.When the light emitting diode short-circuit failure of optocoupler, the collector output of the phototriode of optocoupler is low
Level, CPU can be judged as relay contact closure, lead to the condition adjudgement of mistake.The failure of this circuit can be oriented to two kinds completely
Different state so that safety cannot be protected.
A kind of Acquisition Circuit or device for making failure be oriented to a determining state can be provided in Rail Transit System,
It is a technical issues of urgent need solves to those skilled in the art.
Invention content
In view of this, the present invention provides a kind of dynamic acquisition circuit of fault-safety principle and the dresses of fault-safety principle
It sets, the problem of failure to improve prior art circuits can be oriented to different states, cannot be ensured so as to cause safety.
To achieve the above object, the present invention provides the following technical solutions：A kind of dynamic acquisition circuit of fault-safety principle,
Including：Relay contact unit, optical coupling unit, pulse input unit and signal gathering unit.The optical coupling unit includes
First photoelectric coupling subelement and the second photoelectric coupling subelement.The first photoelectric coupling subelement and the second photoelectric coupling
Unit connects, and the relay contact unit is connect with the optical coupling unit, the pulse input unit and first light
It is electrically coupled subelement connection, the signal gathering unit is connect with the second photoelectric coupling subelement.
Further, optical coupling unit described in the dynamic acquisition circuit of above-mentioned fault-safety principle includes：Optocoupler U4, light
Coupling U6, resistance R5, resistance R6 and resistance R10.Wherein, the cathode of light emitting diode is the defeated of the optocoupler U4 in the optocoupler U4
Enter to hold, the output end of the extremely described optocoupler U4 of transmitting of phototriode in the optocoupler U4.Light emitting diode in the coupling U6
The just extremely described optocoupler U6 input terminal, the output of the extremely described optocoupler U6 of current collection of phototriode in the optocoupler U6
End.One end of the resistance R6 connects the pulse input unit, and the other end of resistance R6 connects the input terminal of the optocoupler U4.
The anode of anode the first power supply of connection of light emitting diode, the output end of the optocoupler U4 and the optocoupler U6 in the optocoupler U4
Input terminal connection.The collector of phototriode is connected by the anode of resistance R5 and the second source in the optocoupler U4
It connects.The cathode of light emitting diode is connected with the cathode of the second source in the optocoupler U6, the output end of the optocoupler U6 with
The signal gathering unit is connected, and the output end of the optocoupler U6 is also connected by R10 with the anode of first power supply.It is described
The emitter of phototriode is connected with the cathode of first power supply in optocoupler U6.Arteries and veins is inputted from the input terminal of the optocoupler U4
Signal is rushed, signal is acquired from the output end of the optocoupler U6, the comparison by acquiring signal and the input pulse signal can be sentenced
Whether deenergizing breaks down.
Further, described in the relay contact unit of the dynamic acquisition circuit of above-mentioned fault-safety principle
One end of relay contact unit is connect with the cathode of the second source, the other end of the relay contact unit with it is described
The output end of optocoupler U4 connects.Using above-mentioned connection type, when collected signal is identical as input pulse signal described in judgement
Relay contact unit disconnects, and collected signal judges that the relay contact unit closes when being differed with input pulse signal
There are component damages in conjunction or circuit.
Further, described in the relay contact unit of the dynamic acquisition circuit of above-mentioned fault-safety principle
One end of relay contact unit is connect with the cathode of the second source, the other end of the relay contact unit with it is described
The anode connection of light emitting diode in optocoupler U6.Using above-mentioned connection type, collected signal and input pulse signal waveform
Judge that the relay contact unit is closed when identical, collected signal judges when with input pulse signal waveform being not identical
There are component damages in the relay contact unit disconnection or circuit.
Further, in the dynamic acquisition circuit of above-mentioned fault-safety principle, the U4 output end with it is described after
Between appliance contact unit, the output end of the U4 is also connected with the anode of diode D9, the anode and described second of diode D8
The cathode of power supply is connected, the anode of the cathode connection diode D7 of the diode D8, the cathode of the diode D7 with it is described
The anode connection of second source, the cathode of the diode D9 are being connected to the diode D8 cathode and the diode D7 just
Between pole, be connected between the cathode and the second source cathode of the light emitting diode of the optocoupler U6 diode D11 and
The cathode of light emitting diode is connect with the diode D11 anodes in diode D12, the optocoupler U6, and the diode D11 is negative
Pole is connect with the anode of the diode D12, and the cathode of the diode D12 is connect with the second source cathode.Increase by two
Pole pipe can play a protective role to circuit, ensure normal operation.
The present invention also provides a kind of device for the fault-safety principle of relay contact cell operation condition adjudgement,
Including：Optical coupling unit, pulse input unit and signal gathering unit.The optical coupling unit includes that the first photoelectric coupling is single
Member and the second photoelectric coupling subelement, the first photoelectric coupling subelement are connect with the second photoelectric coupling subelement, the arteries and veins
It rushes input unit to connect with the first photoelectric coupling subelement, the signal gathering unit and second photoelectric coupling are single
Member connection.
For compared with the prior art, the dynamic acquisition circuit of fault-safety principle provided by the invention, including：Relay touches
Dot element, optical coupling unit, pulse input unit and signal gathering unit.The optical coupling unit includes the first photoelectric coupling
Unit and the second photoelectric coupling subelement.The first photoelectric coupling subelement is connect with the second photoelectric coupling subelement, described
Relay contact unit is connect with the optical coupling unit, and the pulse input unit connects with the first photoelectric coupling subelement
It connects, the signal gathering unit is connect with the second photoelectric coupling subelement.The dynamic acquisition circuit of the fault-safety principle
Failure can be made to be oriented to a determining state, to improve the safety of Rail Transit System.
Description of the drawings
Illustrate the embodiment of the present invention or technical solution in the prior art in order to clearer, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the circuit diagram for acquiring relay contact state in the prior art；
Fig. 2 is the structural representation of the dynamic acquisition circuit for the fault-safety principle that the first specific embodiment of the invention provides
Figure；
Fig. 3 is a kind of specific electricity of the dynamic acquisition circuit for the fault-safety principle that the first specific embodiment of the invention provides
Lu Tu；
Fig. 4 is the improvement circuit diagram of the dynamic acquisition circuit for the fault-safety principle that Fig. 3 is provided；
Fig. 5 is one of input and the timing diagram of output in the first specific embodiment of the invention；
Fig. 6 is input and the two of the timing diagram of output in the first specific embodiment of the invention；
Fig. 7 is another structure of the dynamic acquisition circuit for the fault-safety principle that the first specific embodiment of the invention provides
Schematic diagram；
Fig. 8 is the failure being used for relay contact cell operation condition adjudgement that the second specific embodiment of the invention provides
The structural schematic diagram of the device of failure to the safe side.
Wherein, reference numeral is summarized as follows：
Relay contact unit 100；Optical coupling unit 200；First photoelectric coupling subelement 210；Second photoelectric coupling
Unit 220；Pulse input unit 300；Signal gathering unit 400；Comparing unit 500；The device 600 of fault-safety principle.
Specific implementation mode
The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
With reference to Fig. 2, the present invention provides a kind of dynamic acquisition circuit of fault-safety principle, including：Relay contact unit
100, optical coupling unit 200, pulse input unit 300 and signal gathering unit 400.The optical coupling unit 200 includes first
Photoelectric coupling subelement 210 and the second photoelectric coupling subelement 220.The first photoelectric coupling subelement 210 and the second photoelectricity
It couples subelement 220 to connect, the relay contact unit 100 is connect with the optical coupling unit 200, the pulse input list
Member 300 is connect with the first photoelectric coupling subelement 210, the signal gathering unit 400 and second photoelectric coupling
Unit 220 connects.
In the first specific implementation mode provided by the invention, with reference to Fig. 2, the pulse input unit 300 and the light
The input terminal of coupling unit 200 connects, specifically, the pulse input unit 300 and the first optical coupling subelement 210
Connection detects signal for input pulse, and the signal gathering unit 400 is connect with the output end of the optical coupling unit 200,
Specifically, the signal gathering unit 400 is connect with the second photoelectric coupling subelement 220 for acquiring output signal.
Above-mentioned pulse input signal arrives the output signal after the optical coupling unit 200.
In this embodiment, 300 input pulse signal of the pulse input unit, the component in the circuit
When failure, the signal gathering unit 400 will not acquire dynamic pulse.When the signal gathering unit 400 acquires
It can be judged as that circuit breaks down less than dynamic pulse.Circuit components are made event occur using above-mentioned dynamic acquisition circuit
Failure can be made to be oriented to a determining state when barrier, erroneous judgement is avoided, to improve the safety of Rail Transit System.
With reference to Fig. 3, the dynamic acquisition circuit for the fault-safety principle that the first specific embodiment provides is provided in the present invention
A kind of physical circuit figure.The input of the optical coupling unit 200 terminates the pulse input unit 300, the optical coupling unit
200 output terminates the signal gathering unit 400.The optical coupling unit 200 includes：Optocoupler U4, optocoupler U6, resistance R5,
Resistance R6 and resistance R10.Wherein, the input terminal that the cathode of light emitting diode is the optocoupler U4 in the optocoupler U4, the light
The output end of the extremely described optocoupler U4 of transmitting of phototriode in coupling U4.Light emitting diode is just extremely described in the coupling U6
The input terminal of optocoupler U6, the output end of the extremely described optocoupler U6 of current collection of phototriode in the optocoupler U6.The resistance R6
One end connect the pulse input unit 300, the other end of resistance R6 connects the input terminal of the optocoupler U4.The optocoupler U4
The anode of anode the first power supply of connection of middle light emitting diode, the output end of the optocoupler U4 and the input terminal of the optocoupler U6 connect
It connects.The collector of phototriode is connect by resistance R5 with the anode of the second source in the optocoupler U4.The optocoupler
The cathode of light emitting diode is connected with the cathode of the second source in U6, output end and the signal acquisition of the optocoupler U6
Unit 400 is connected, and the output end of the optocoupler U6 is also connected by R10 with the anode of first power supply.In the optocoupler U6
The emitter of phototriode is connected with the cathode of first power supply.
In the first specific embodiment of the present invention, first power supply is the DC power supply that voltage is 5V or 3.3V,
The second source is the DC power supply that voltage is 24V.Pulse signal after the optical coupling unit 200 by exporting, by right
The analysis of acquisition signal may know that the dynamic acquisition circuit whether there is faulty component.
With reference to Fig. 3, in the first specific embodiment provided by the invention, further, in the relay contact unit
In 100, one end of the relay contact S is connect with the cathode of the second source, the other end of the relay contact S with
The output end of the optocoupler U4 connects.
With reference to Fig. 5 and Fig. 6, in the first specific embodiment, when the relay contact S is disconnected, in the defeated of optocoupler U4
When entering to hold input high level, the output end of optocoupler U6 collects high level；In the input terminal input low level of optocoupler U4, optocoupler
The output end of U6 collects low level.When the relay contact S is closed, in the input terminal input high level of optocoupler U4,
The output end of optocoupler U6 collects high level；In the input terminal input low level of optocoupler U4, the output end of optocoupler U6 collects
High level.
Whether relay contact S is disconnected or is closed, when element breaks down in circuit, such as：When resistance R5 is opened
Phototriode cut-off in Lu Shi, the optocoupler U4, the light emitting diode cut-off of the optocoupler U6, the output of the optocoupler U6
End output is high level；When the phototriode short circuit of the optocoupler U4, the LEDs ON of the optocoupler U6 is described
The output end output of optocoupler U6 is low level；When the light-emitting diode open-circuit of the U6 or short circuit, the output of the optocoupler U6
End output is high level.It can be seen that only in the case that relay contact S is disconnected and circuit composition device is all intact,
The pulse consistent with the input terminal input pulse signal of optocoupler U4 can be collected in the output end of optocoupler U6.Work as relay contact
S is closed or circuit composition device damages bad when and all cannot get dynamic pulse signal.
It can be closed in relay contact S using the access way at the both ends above-mentioned relay contact S or circuit forms device
When having damage, failure is oriented to a determining state, prevents the erroneous judgement to failure, improves Rail Transit System safety.
In other specific embodiments of the present invention, in the relay contact unit 100, the relay contact S
One end connect with the cathode of the second source, light-emitting diodes in the other end of the relay contact S and the optocoupler U6
The anode connection of pipe.
With reference to Fig. 5 and Fig. 6, in other specific embodiments, when the relay contact S is disconnected, optocoupler U4's
When input terminal input high level, the output end of optocoupler U6 collects high level；In the input terminal input low level of optocoupler U4, light
The output end of coupling U6 collects high level.When the relay contact S is closed, in the input terminal input high level of optocoupler U4
When, the output end of optocoupler U6 collects high level；In the input terminal input low level of optocoupler U4, the output end of optocoupler U6 acquires
To low level.
Whether relay contact S is disconnected or is closed, when element breaks down in circuit, such as：When resistance R5 is opened
Phototriode cut-off in Lu Shi, the optocoupler U4, the light emitting diode cut-off of the optocoupler U6, the output of the optocoupler U6
End output is high level；When the phototriode short circuit of the optocoupler U4, the LEDs ON of the optocoupler U6 is described
The output end output of optocoupler U6 is low level (relay contact S is closed) or high level (relay contact S is disconnected)；As the U6
Light-emitting diode open-circuit or short circuit when, the optocoupler U6 output end output be high level.It can be seen that only working as relay
In the case that contact S is closed and circuit composition device is all intact, it can just be collected with optocoupler U4's in the output end of optocoupler U6
The identical pulse of input terminal input pulse signal waveform.When relay contact S disconnections or circuit composition device damage bad when
It all cannot get dynamic pulse signal.
It can be disconnected in relay contact S using the access way at the both ends above-mentioned relay contact S or circuit forms device
When having damage, failure is oriented to a determining state, prevents the erroneous judgement to failure, improves Rail Transit System safety.
With reference to Fig. 4, in the first specific embodiment provided by the invention, further, the output end in the U4 and institute
Between stating relay contact S, the output end of the U4 is also connected with the anode of diode D9, the anode and described second of diode D8
The cathode of power supply is connected, the anode of the cathode connection diode D7 of the diode D8, the cathode of the diode D7 with it is described
The anode connection of second source, the cathode of the diode D9 are being connected to the diode D8 cathode and the diode D7 just
Between pole, be connected between the cathode and the second source cathode of the light emitting diode of the optocoupler U6 diode D11 and
The cathode of light emitting diode is connect with the diode D11 anodes in diode D12, the optocoupler U6, and the diode D11 is negative
Pole is connect with the anode of the diode D12, and the cathode of the diode D12 is connect with the second source cathode.
Diode is arranged at above-mentioned position specifically to act as：D7, D8 and D9 are to relay contact S branches importation
Protection, when there is the voltage more than 24V on relay contact S D9 cut-offs can prevent high voltage from entering optical coupling unit 200,
D7 provides the anode that voltage is released to the second source by access, and when there is the voltage less than 0V on relay contact S, D8 is carried
For access, negative voltage is released on the cathode of the second source.D11 and D12 is the work(for playing protection optical coupling unit 200
Can, when having high voltage on the cathode of second source, D11 and D12 are operated in the state reversely ended, and high voltage is prevented
Subsequent circuit.
Diode is set at foregoing circuit position for preventing damage of the high back voltage to circuit components.Increase by two poles
Pipe can play a protective role to circuit, ensure normal operation circuit.
With reference to Fig. 7, in the first specific embodiment provided by the invention, further, the fault-safety principle moves
State Acquisition Circuit can also include：Comparing unit 500, the comparing unit 500 is for comparing the pulse input unit 300
The acquisition signal waveform that waveform input signal and the signal gathering unit 400 acquire, judges the relay according to comparison result
The working condition of device contact point unit 100.Preferably, the comparing unit 500 by continuous 10 pulse input signal waveforms and with
The corresponding acquisition signal waveform of continuous 10 pulse input signals is compared.
In this first specific embodiment, specifically, when impulse waveform and the acquisition signal of the input signal
When waveform is completely the same, judge that the working condition of the relay contact unit 100 is safe work state.When the input is believed
Number impulse waveform with it is described acquisition signal waveform it is not quite identical when, judge the work of the relay contact unit 100
State is non-security working condition.
It adopts in manner just described when there are the situations of component damage in the dynamic acquisition circuit of the fault-safety principle
When, the working condition of the relay contact unit 100 is the non-security working condition of determination.Make failure that can be oriented to one really
Fixed state.
With reference to Fig. 8, the second specific embodiment of the invention provides a kind of for sentencing to relay contact cell operation state
The device 600 of disconnected fault-safety principle may include：Optical coupling unit 200, pulse input unit 300 and signal acquisition list
Member 400.The optical coupling unit include the first photoelectric coupling subelement 210 and the second photoelectric coupling subelement 220, described first
Photoelectric coupling subelement 210 is connect with the second photoelectric coupling subelement 220, the pulse input unit 300 and first light
It is electrically coupled the connection of subelement 210, the signal gathering unit 400 is connect with the second photoelectric coupling subelement 220.
The device 600 for the fault-safety principle to relay contact cell operation condition adjudgement can make list
Only device connects the both ends of the contact S of the relay and described device when needing to acquire the contact S state of relay
It connects.
In second specific embodiment provided by the invention, further, the optical coupling unit 200 may include：Optocoupler
U4, optocoupler U6, resistance R5, resistance R6 and resistance R10, wherein the cathode of light emitting diode is the optocoupler in the optocoupler U4
The input terminal of U4, the output end of the extremely described optocoupler U4 of transmitting of phototriode in the optocoupler U4 shine in the coupling U6
The input terminal of the just extremely described optocoupler U6 of diode, the extremely described optocoupler U6 of current collection of phototriode in the optocoupler U6
One end of output end, the resistance R6 connects the pulse input unit 300, and the other end of resistance R6 connects the optocoupler U4's
Input terminal, the anode of anode the first power supply of connection of light emitting diode, the output end of the optocoupler U4 and institute in the optocoupler U4
The input terminal for stating optocoupler U6 connects, and the collector of phototriode passes through resistance R5 and the second source in the optocoupler U4
Anode connects, and the cathode of light emitting diode is connected with the cathode of the second source in the optocoupler U6, and the optocoupler U6's is defeated
Outlet is connected with the signal gathering unit 400, and the output end of the optocoupler U6 also passes through the anode of R10 and first power supply
It is connected.The emitter of phototriode is connected with the cathode of first power supply in the optocoupler U6.
In second specific embodiment provided by the invention, further, when in use, by one end of relay contact S with
The cathode of the second source connects, and the other end of the relay contact S is connect with the output end of the optocoupler U4.
In other embodiments of the invention, when in use, by the negative of one end of relay contact S and the second source
Pole connects, and the other end of the relay contact S is connect with the anode of light emitting diode in the optocoupler U6.
Because circuit portion function is as in first specific embodiment in above-mentioned apparatus, details are not described herein again.
In conclusion using the dynamic acquisition circuit of above-mentioned fault-safety principle and for relay contact cell operation
The device of the fault-safety principle of condition adjudgement, but when circuit breaks down be oriented to a determinings state, avoid judge by accident from
And improve the safety of Rail Transit System.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment weight
Point explanation is all difference from other examples, and the same or similar parts between the embodiments can be referred to each other.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion so that article or equipment including a series of elements include not only those elements, but also is wrapped
Include other elements that are not explicitly listed.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that including the element article or equipment in there is also other identical elements.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should be noted that：Similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and is explained.
Claims (4)
1. a kind of dynamic acquisition circuit of fault-safety principle, which is characterized in that including：Relay contact unit, optical coupling list
Member, pulse input unit and signal gathering unit, the optical coupling unit include the first photoelectric coupling subelement and the second photoelectricity
Subelement is coupled, the first photoelectric coupling subelement is connect with the second photoelectric coupling subelement, the relay contact unit
It is connect with the optical coupling unit, the pulse input unit is connect with the first photoelectric coupling subelement, and the signal is adopted
Collection unit is connect with the second photoelectric coupling subelement, and the optical coupling unit includes：Optocoupler U4, optocoupler U6, resistance R5, electricity
Hinder R6 and resistance R10, wherein the cathode of light emitting diode is the input terminal of the optocoupler U4, the optocoupler in the optocoupler U4
The output end of the extremely described optocoupler U4 of transmitting of phototriode in U4, light emitting diode is just extremely described in the optocoupler U6
The input terminal of optocoupler U6, the output end of the extremely described optocoupler U6 of current collection of phototriode, the resistance R6 in the optocoupler U6
One end connect the pulse input unit, the other end of resistance R6 connects the input terminal of the optocoupler U4, in the optocoupler U4
The anode of anode the first power supply of connection of light emitting diode, the output end of the optocoupler U4 and the input terminal of the optocoupler U6 connect
It connects, the collector of phototriode is connected by the anode of resistance R5 and second source in the optocoupler U4, in the optocoupler U6
The cathode of light emitting diode is connected with the cathode of the second source, output end and the signal gathering unit of the optocoupler U6
It is connected, the output end of the optocoupler U6 is also connected by R10 with the anode of first power supply, photosensitive three pole in the optocoupler U6
The emitter of pipe is connected with the cathode of first power supply, one end of the relay contact unit and bearing for the second source
Pole connects, and the other end of the relay contact unit is connect with the output end of the optocoupler U4, the relay contact unit
The other end also in the optocoupler U6 light emitting diode anode connect.
2. the dynamic acquisition circuit of fault-safety principle as described in claim 1, it is characterised in that：In the output end of the U4
Between the relay contact unit, the output end of the U4 is also connected with the anode of diode D9, the anode of diode D8 with
The cathode of the second source is connected, and the anode of the cathode connection diode D7 of the diode D8, the diode D7's is negative
Pole is connect with the anode of the second source, and the cathode of the diode D9 is connected to the diode D8 cathode and two pole
Between the anode of pipe D7, two poles are connected between the cathode and the second source cathode of the light emitting diode of the optocoupler U6
The cathode of light emitting diode is connect with the diode D11 anodes in pipe D11 and diode D12, the optocoupler U6, two pole
Pipe D11 cathode are connect with the anode of the diode D12, and the cathode of the diode D12 is connect with the second source cathode.
3. the dynamic acquisition circuit of the fault-safety principle as described in claim 1~2 any one, which is characterized in that also wrap
It includes：Comparing unit, the comparing unit is for comparing the input signal of the pulse input unit and the signal gathering unit
The acquisition signal of acquisition judges the working condition of the relay contact unit according to comparison result.
4. a kind of device for the fault-safety principle to relay contact cell operation condition adjudgement, which is characterized in that packet
It includes：Optical coupling unit, pulse input unit and signal gathering unit, the optical coupling unit include the first photoelectric coupling subelement
And the second photoelectric coupling subelement, the first photoelectric coupling subelement are connect with the second photoelectric coupling subelement, the pulse
Input unit is connect with the first photoelectric coupling subelement, the signal gathering unit and the second photoelectric coupling subelement
Connection, the optical coupling unit include：Optocoupler U4, optocoupler U6, resistance R5, resistance R6 and resistance R10, wherein the optocoupler U4
The cathode of middle light emitting diode is the input terminal of the optocoupler U4, the extremely described light of transmitting of phototriode in the optocoupler U4
The output end of coupling U4, the input terminal of the just extremely described optocoupler U6 of light emitting diode in the optocoupler U6, light in the optocoupler U6
One end of the output end of the extremely described optocoupler U6 of the current collection of quick triode, the resistance R6 connects the pulse input unit, electricity
The other end of resistance R6 connects the input terminal of the optocoupler U4, anode the first power supply of connection of light emitting diode in the optocoupler U4
Anode, the output end of the optocoupler U4 are connect with the input terminal of the optocoupler U6, the current collection of phototriode in the optocoupler U4
Pole is connected by the anode of resistance R5 and second source, the cathode of light emitting diode and the second source in the optocoupler U6
Cathode is connected, and the output end of the optocoupler U6 is connected with the signal gathering unit, and the output end of the optocoupler U6 also passes through R10
It is connected with the anode of first power supply, the cathode phase of the emitter of phototriode and first power supply in the optocoupler U6
Even, when in use, one end of relay contact unit is connect with the cathode of the second source, the relay contact unit
The other end connect with the output end of the optocoupler U4, the other end of the relay contact unit is also sent out with the optocoupler U6
The anode connection of optical diode.
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| CN106019990B (en) * | 2016-05-19 | 2018-10-16 | 北京全路通信信号研究设计院集团有限公司 | A kind of the conditional information acquisition circuit and method of fault-safety principle |
| CN116360245B (en) * | 2023-05-31 | 2023-08-18 | 北京全路通信信号研究设计院集团有限公司 | Dynamic acquisition circuit and transponder transmission system |
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| CN102916689A (en) * | 2012-11-12 | 2013-02-06 | 北京广利核系统工程有限公司 | Digital value acquisition circuit with fault diagnosis capacity |
| CN104386091A (en) * | 2014-09-23 | 2015-03-04 | 浙江众合机电股份有限公司 | Rail traffic safety control circuit and system |
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| EP0571134B1 (en) * | 1992-05-22 | 1998-07-22 | AT&T Corp. | Optical regenerator circuit |
| CN102055464B (en) * | 2010-10-14 | 2012-09-05 | 中国北车股份有限公司大连电力牵引研发中心 | Velocity impulse processing circuit |
| CN102386902A (en) * | 2011-10-10 | 2012-03-21 | 北京联合大学 | Fail to safe relay and driving method thereof |
| CN202634402U (en) * | 2012-05-15 | 2012-12-26 | 上海工程技术大学 | 32-path data acquisition circuit having signal isolation function |
| CN102739235A (en) * | 2012-07-11 | 2012-10-17 | 南车株洲电力机车研究所有限公司 | Switching value acquisition insulating circuit |
| CN102916689A (en) * | 2012-11-12 | 2013-02-06 | 北京广利核系统工程有限公司 | Digital value acquisition circuit with fault diagnosis capacity |
| CN104386091A (en) * | 2014-09-23 | 2015-03-04 | 浙江众合机电股份有限公司 | Rail traffic safety control circuit and system |
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| CN105187049A (en) | 2015-12-23 |
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