CN215833552U - Signal machine simulation circuit and signal machine control panel aging inspection circuit - Google Patents
Signal machine simulation circuit and signal machine control panel aging inspection circuit Download PDFInfo
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- CN215833552U CN215833552U CN202121391714.1U CN202121391714U CN215833552U CN 215833552 U CN215833552 U CN 215833552U CN 202121391714 U CN202121391714 U CN 202121391714U CN 215833552 U CN215833552 U CN 215833552U
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Abstract
The utility model provides a signaler simulation circuit and a signaler control board aging inspection circuit, wherein a controller is set to respectively control the switching states of a first controlled change-over switch, a second controlled change-over switch and a tail end controlled change-over switch, and the set resistance value configuration of a first load resistor and a second load resistor is combined, so that the signaler control board can be subjected to multiple fault mode injection tests, the requirement of the signaler control board on the fault injection test in the aging inspection can be met, the requirements on resources such as a real signaler and an artificial trackside device can be greatly reduced, and the inspection and aging efficiency can be greatly improved. In the link of inspecting and aging the control panel of the annunciator, the simulation of a plurality of groups of annunciators can be realized in a unit space by replacing a real annunciator with the annunciator simulation circuit. The load current of the signal machine control board in different sizes can be obtained by adjusting the resistance values of the first load resistor and the second load resistor, and the inspection efficiency is further improved.
Description
Technical Field
The utility model relates to the technical field of simulation circuits, in particular to a signal machine simulation circuit and a signal machine control board aging test circuit.
Background
In the field of rail traffic control, object controllers are key devices of all-electronic interlocking systems. The object controller has a complicated structure in which an execution unit for controlling the traffic signal is a traffic signal control board. And the signal machine control panel receives the interlocking control command through the object controller, and then controls and manages the signal machine beside the track.
In the signal machine control panel factory aging inspection link, a plurality of signal machine control panels can be subjected to aging inspection simultaneously for improving inspection efficiency. Particularly, in the indoor test platform, the real object controller apparatus may control a plurality of sections according to actual conditions, and thus includes a plurality of signal control boards corresponding to each section.
When carrying out ageing inspection to the semaphore control panel, can face semaphore control panel load, the problem that the semaphore was chosen promptly adopts real semaphore or software simulation semaphore to carry out ageing inspection to the semaphore control panel at present usually. The real signal machine cannot be widely applied due to the limitation of factors such as large volume, more occupied space, complex wiring, high cost, more consumed resources and the like. The software simulation annunciator needs additional simulation trackside equipment such as an industrial personal computer and the like to run simulation software, so that the aging inspection cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a signaler simulation circuit and a signaler control board aging inspection circuit, which are used for solving the defects in the prior art.
The utility model provides a signal machine simulation circuit, comprising: the system comprises a controller, a head end controlled change-over switch group, a tail end controlled change-over switch and a power supply; the head end controlled change-over switch group at least comprises a first controlled change-over switch and a second controlled change-over switch, the first controlled change-over switch comprises a first control end, a first public end and a second public end, the second controlled change-over switch comprises a second control end, a third public end and a fourth public end, the tail end controlled change-over switch comprises a tail end control end and a tail end public end, and the controller is respectively and electrically connected with the first control end, the first public end and the third public end;
the power supply, the second public end, the fourth public end and the tail end public end are electrically connected, the normally closed contact corresponding to the first public end is electrically connected with the second control end, the normally closed contact corresponding to the third public end is electrically connected with the tail end control end, the normally closed contact corresponding to the second public end is electrically connected with the fourth public end, and the normally closed contact corresponding to the fourth public end is electrically connected with the tail end public end;
a normally open contact corresponding to the fourth common end is electrically connected with a first load resistor, a normally closed contact corresponding to the tail end common end is electrically connected with a second load resistor, and the resistance values of the first load resistor and the second load resistor are different;
the controller is configured to control the switching states of the first controlled changeover switch, the second controlled changeover switch, and the tail-end controlled changeover switch, respectively.
According to the signaler simulation circuit provided by the utility model, the normally open contact corresponding to the tail end common end is connected with a third load resistor, and the third load resistor is different from the first load resistor and the second load resistor in resistance value.
According to the simulation circuit of the signal machine, the head end controlled change-over switch group further comprises a third controlled change-over switch, and the third controlled change-over switch comprises a third control end, a fifth common end and a sixth common end;
the third control end is electrically connected with the normally closed contact corresponding to the first common end;
the fifth common end is electrically connected with the controller, and a normally closed contact corresponding to the fifth common end is electrically connected with the second control end;
the sixth common end is electrically connected with the normally closed contact corresponding to the second common end, the normally closed contact corresponding to the sixth common end is electrically connected with the fourth common end, the normally open contact corresponding to the sixth common end is electrically connected with a fourth load resistor, and the fourth load resistor is different from the first load resistor and the second load resistor in resistance value;
the controller is further configured to control a switch state of the third controlled diverter switch.
According to the simulation circuit of the signal machine, provided by the utility model, the controller is electrically connected with the first control end, the first public end and the third public end through a first line, a second line and a third line respectively;
the power supply is electrically connected with the second common terminal through a fourth line.
The annunciator simulation circuit provided by the utility model further comprises a feedback module, wherein the feedback module is electrically connected with the controller, and the controller is connected with an upper computer;
the feedback module is electrically connected with the first line, the second line, the third line and the fourth line respectively;
the feedback module is configured to collect line signals of the first line, the second line, the third line and the fourth line;
the controller is further configured to send the line signal to the upper computer.
According to the signal simulation circuit provided by the utility model, the controller is set to send a first control signal to the first control end through the first line, send a second control signal to the first public end through the second line and send a third control signal to the third public end through the third line;
the priorities of the first control signal, the second control signal, and the third control signal are sequentially decreased.
According to the signal machine simulation circuit provided by the utility model, the properties of the contact points connected with the first common end and the second common end are consistent, and the properties of the contact points connected with the third common end and the fourth common end are consistent.
According to the signaler simulation circuit provided by the utility model, the resistance value of the first load resistor is determined based on the voltage value of the power supply and the fault mode threshold current value; and the resistance value of the second load resistor is determined based on the resistance value of the internal resistance of the annunciator.
According to the signal simulation circuit provided by the utility model, the power supply is a power supply of a signal control board.
The utility model also provides an aging test circuit for the control board of the annunciator, which comprises the following components: a plurality ofly as described above semaphore emulation circuit, it is a plurality of semaphore emulation circuit is connected with the power electricity of the semaphore control panel to be examined.
The annunciator simulation circuit comprises a controller, a head end controlled change-over switch group, a tail end controlled change-over switch and a power supply, wherein the controller is set to respectively control the switching states of the first controlled change-over switch, the second controlled change-over switch and the tail end controlled change-over switch, and the set resistance value configuration of the first load resistor and the second load resistor is combined, so that the annunciator simulation circuit can support the injection test of multiple fault modes for the annunciator control panel, meets the requirement of the fault injection test in the annunciator control panel aging test, greatly reduces the requirements on resources such as a real annunciator and simulation trackside equipment, and greatly improves the test and aging efficiency. In the link of inspecting and aging the control panel of the annunciator, the simulation of a plurality of groups of annunciators can be realized in a unit space by replacing a real annunciator with the annunciator simulation circuit. The load current of the signal machine control board in different sizes can be obtained by adjusting the resistance values of the first load resistor and the second load resistor, and the inspection efficiency is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is one of the schematic structural diagrams of the semaphore simulation circuit provided by the present invention;
FIG. 2 is a second schematic diagram of the structure of the semaphore emulation circuit provided by the present invention;
fig. 3 is a third schematic structural diagram of the semaphore simulation circuit provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
When carrying out ageing inspection to the semaphore control panel, can face semaphore control panel load, the problem that the semaphore was chosen promptly adopts real semaphore or software simulation semaphore to carry out ageing inspection to the semaphore control panel at present usually. The adoption of a real signal machine has the following disadvantages:
1) the volume is large, the occupied space is large, the wiring is complex, the cost is high, the consumed resources are large, and the wide application cannot be realized;
2) the real quantity of the annunciators cannot meet the aging requirement of simultaneous detection of dozens of or even dozens of annunciator control panels, only serial detection can be carried out, and the efficiency is not high;
3) the application requirements of multiple real signal machines of an actual test platform cannot be met;
4) the real signal machine can not meet the requirements of fault injection test in the inspection aging process.
The adoption of software simulation annunciators has the following disadvantages:
1) the software simulation annunciator cannot simulate the working current of a real annunciator, so that the verification of the aging function is lacked;
2) additional simulation trackside equipment such as an industrial personal computer and the like is needed to run simulation software, and the aging inspection cost is increased.
Therefore, the embodiment of the utility model provides a signal machine simulation circuit, which is used for solving the problems in the prior art.
Fig. 1 is a schematic structural diagram of an annunciator simulation circuit provided in an embodiment of the present invention, and as shown in fig. 1, the annunciator simulation circuit includes: the system comprises a controller 1, a head end controlled change-over switch group 2, a tail end controlled change-over switch 3 and a power supply 4; the head-end controlled change-over switch group 2 at least comprises a first controlled change-over switch 21 and a second controlled change-over switch 22, the first controlled change-over switch 21 comprises a first control end 211, a first common end a and a second common end B, the second controlled change-over switch 22 comprises a second control end 221, a third common end C and a fourth common end D, the tail-end controlled change-over switch 3 comprises a tail-end control end 31 and a tail-end common end E, and the controller 1 is electrically connected with the first control end 211, the first common end a and the third common end C respectively;
the power supply 4, the second common end B, the fourth common end D and the tail end common end E are electrically connected, the normally closed contact corresponding to the first common end a is electrically connected with the second control end 221, the normally closed contact corresponding to the third common end C is electrically connected with the tail end control end 31, the normally closed contact corresponding to the second common end B is electrically connected with the fourth common end D, and the normally closed contact corresponding to the fourth common end D is electrically connected with the tail end common end E;
a normally open contact corresponding to the fourth common end D is electrically connected with a first load resistor 5, a normally closed contact corresponding to the tail end common end E is electrically connected with a second load resistor 6, and the first load resistor 5 and the second load resistor 6 have different resistance values;
the controller 1 is arranged to control the switching states of the first controlled changeover switch 21, the second controlled changeover switch 22 and the tail end controlled changeover switch 3, respectively.
Optionally, the simulation circuit for a signal machine provided in the embodiment of the present invention includes a controller 1, configured to implement switching states of a first controlled switch 21, a second controlled switch 22, and a tail-end controlled switch 3 in a head-end controlled switch group 2, where the first controlled switch 21, the second controlled switch 22, and the tail-end controlled switch 3 are all controlled switches, and each of the controlled switches includes a control end, a common end, and a normally open contact (NO) and a normally closed contact (NC) corresponding to the common end. The normally closed contact represents a contact connected with the common terminal in a normal state, and the normally open contact is opposite to the normally closed contact and represents a contact not connected with the common terminal in the normal state. In the embodiment of the present invention, each of the first controlled switch 21, the second controlled switch 22 and the tail-end controlled switch 3 includes two common ends, and each common end corresponds to one normally open contact and one normally closed contact. Thus, the tail-end controlled switch 3 may further include a tail-end common end F and its corresponding normally open contact and normally closed contact.
In the embodiment of the present invention, the controller 1 is electrically connected to the first common end a, and since the normally closed contact corresponding to the first common end a is electrically connected to the second control end 221, the on-off state of the second controlled switch 22 can be controlled. The controller 1 is electrically connected to the first control terminal 211, and can directly control the on/off state of the first controlled switch 21. The controller 1 is electrically connected to the third common terminal C, and since the normally closed contact corresponding to the third common terminal C is electrically connected to the tail end control terminal 31 of the tail end controlled switch 3, the on-off state of the tail end controlled switch 3 can be controlled.
When the controller 1 does not control the first controlled switch 21, the second controlled switch 22, and the tail-end controlled switch 3, the first common terminal a, the second common terminal B, the third common terminal C, the fourth common terminal D, the tail-end common terminal E, and the tail-end common terminal F all contact with corresponding normally closed contacts, and at this time, the power supply 4 may supply power to the second load resistor 6. When the controller 1 has a control effect on the first controlled change-over switch 21 and has no control effect on the second controlled change-over switch 22 and the tail end controlled change-over switch 3, the annunciator simulation circuit is switched to a no-load state at the moment, the corresponding load resistance is infinite, and the load current is 0mA, so that the annunciator simulation circuit can realize that the 0mA wire breakage fault mode of the annunciator is injected into the annunciator control panel to test.
When the controller 1 has no control effect on the first controlled change-over switch 21 and the tail end controlled change-over switch 3 and has a control effect on the second controlled change-over switch 22, the third common end C and the fourth common end D are both in contact with the corresponding normally open contacts, at this time, the power supply 4 can supply power to the first load resistor 5, the load resistor corresponding to the annunciator simulation circuit is the first load resistor 5, and the load current is the ratio of the voltage value of the power supply to the resistance value of the first load resistor 5. Can be according to inspection ageing and test demand this moment, through the resistance size of adjustment first load resistance 5, can retrain the load current that semaphore emulation circuit corresponds to between 40mA < I <80mA, make semaphore emulation circuit realize that 40mA to 80mA fault mode of semaphore injects into the semaphore control panel and tests.
In the embodiment of the present invention, in order to simulate a normal annunciator in which a fault does not occur, the resistance value of the second load resistor 6 may be set to the resistance value of the internal resistance of the annunciator.
The signaler simulation circuit provided by the embodiment of the utility model comprises a controller, a head-end controlled change-over switch group, a tail-end controlled change-over switch and a power supply, wherein the controller is set to respectively control the switching states of the first controlled change-over switch, the second controlled change-over switch and the tail-end controlled change-over switch, and is combined with the resistance value configuration of the first load resistor and the second load resistor, so that the multiple fault mode injection test on a signaler control board can be supported, the requirement on the fault injection test in the aging test of the signaler control board can be met, the requirements on resources such as a real signaler and a simulation trackside device can be greatly reduced, and the test and aging efficiency can be greatly improved. In the link of inspecting and aging the control panel of the annunciator, the simulation of a plurality of groups of annunciators can be realized in a unit space by replacing a real annunciator with the annunciator simulation circuit. The load current of the signal machine control board in different sizes can be obtained by adjusting the resistance values of the first load resistor and the second load resistor, and the inspection efficiency is further improved.
On the basis of the above embodiment, in the signaler simulation circuit provided in the embodiment of the present invention, the normally open contact corresponding to the tail-end common end is connected to a third load resistor, and the third load resistor has a different resistance value from both the first load resistor and the second load resistor.
Optionally, as shown in fig. 1, a third load resistor 7 may be further connected to the normally open contact corresponding to the tail end common end F, where the third load resistor 7 has a different resistance value from the first load resistor 5 and the second load resistor 6.
When the controller 1 has no control effect on the first controlled change-over switch 21 and the second controlled change-over switch 22 and has control effect on the tail-end controlled change-over switch 3, the first common end a, the second common end B, the third common end C and the fourth common end D are all in contact with corresponding normally closed contacts, the tail-end common end E and the tail-end common end F are all in contact with corresponding normally open contacts, at the moment, the power supply 4 can supply power for the third load resistor 7, the load resistor corresponding to the annunciator simulation circuit is the third load resistor 7, and the load current is the ratio of the voltage value of the power supply and the resistance value of the third load resistor 7. At this moment, the load current corresponding to the annunciator simulation circuit can be constrained to 0mA < I <40mA by adjusting the resistance value of the third load resistor 7 according to the requirements of aging inspection and test, so that the annunciator simulation circuit can realize that the annunciator 0mA to 40mA fault modes are injected into the annunciator control board for testing.
The signaler simulation circuit provided by the embodiment of the utility model introduces the third load resistor, so that more corresponding fault modes can be tested, and the reliability of the test is improved.
On the basis of the above embodiment, in the semaphore simulation circuit provided in the embodiment of the present invention, the head-end controlled change-over switch group further includes a third controlled change-over switch, and the third controlled change-over switch includes a third control terminal, a fifth common terminal, and a sixth common terminal;
the third control end is electrically connected with the normally closed contact corresponding to the first common end;
the fifth common end is electrically connected with the controller, and a normally closed contact corresponding to the fifth common end is electrically connected with the second control end;
the sixth common end is electrically connected with the normally closed contact corresponding to the second common end, the normally closed contact corresponding to the sixth common end is electrically connected with the fourth common end, the normally open contact corresponding to the sixth common end is electrically connected with a fourth load resistor, and the fourth load resistor is different from the first load resistor and the second load resistor in resistance value;
the controller is further configured to control a switch state of the third controlled diverter switch.
Optionally, as shown in fig. 2, the head end controlled switch group 2 further includes a third controlled switch 23, and the third controlled switch 23 includes a third control terminal 231, a fifth common terminal G and a sixth common terminal H. The third control end 231 is electrically connected to the normally closed contact corresponding to the first common end a, so that the controller 1 controls the on-off state of the third controlled switch 23. The fifth common terminal G is electrically connected to the controller 1, and since the normally closed contact corresponding to the fifth common terminal G is electrically connected to the second control terminal 221, the controller 1 can control the on/off state of the second controlled switch 23.
The sixth common end H is electrically connected with the normally closed contact corresponding to the second common end B, the normally closed contact corresponding to the sixth common end H is electrically connected with the fourth common end D, the normally open contact corresponding to the sixth common end H is electrically connected with the fourth load resistor 8, the fourth load resistor 8 is different from the first load resistor 5 and the second load resistor 6 in resistance value, and the fourth load resistor 8 is different from the third load resistor 7 in resistance value.
When the controller 1 does not control the first controlled switch 21, the second controlled switch 22, the third controlled switch 23, and the tail-end controlled switch 3, the first common end a, the second common end B, the third common end C, the fourth common end D, the tail-end common end E, the tail-end common end F, the fifth common end G, and the sixth common end H are all in contact with corresponding normally closed contacts, and at this time, the power supply 4 may supply power to the second load resistor 6. When the controller 1 has a control effect on the first controlled change-over switch 21 and has no control effect on the second controlled change-over switch 22, the third controlled change-over switch 23 and the tail end controlled change-over switch 3, the annunciator simulation circuit is switched to an idle state at the moment, the corresponding load resistance is infinite, the load current is 0mA, and then the annunciator simulation circuit can realize that the 0mA wire breaking fault mode of the annunciator is injected into the annunciator control panel for testing.
When the controller 1 has no control effect on the first controlled change-over switch 21, the second controlled change-over switch 22 and the tail end controlled change-over switch 3, and has a control effect on the third controlled change-over switch 23, the fifth common end G and the sixth common end H are both in contact with the corresponding normally open contacts, at this time, the power supply 4 can supply power to the fourth load resistor 8, the load resistor corresponding to the annunciator simulation circuit is the fourth load resistor 8, and the load current is the ratio of the voltage value of the power supply and the resistance value of the fourth load resistor 8. Can be according to inspection ageing and test demand this moment, through the resistance size of adjustment fourth load resistance 8, can retrain the load current that semaphore emulation circuit corresponds between the fixed range, make semaphore emulation circuit realize that the fault mode of semaphore current fixed range injects into the semaphore control panel and tests.
In the embodiment of the utility model, the third controlled change-over switch is introduced, so that the fourth load resistor can be added, the fault mode corresponding to the test can be further increased, and the reliability of the test can be increased.
On the basis of the above embodiment, in the semaphore simulation circuit provided in the embodiment of the present invention, the controller is electrically connected to the first control terminal, the first common terminal, and the third common terminal through a first line, a second line, and a third line, respectively;
the power supply is electrically connected with the second common terminal through a fourth line.
Optionally, in an embodiment of the present invention, the controller is electrically connected to the first control terminal, the first common terminal, and the third common terminal through a first line, a second line, and a third line, respectively, and the power supply is electrically connected to the second common terminal through a fourth line. Therefore, the control signal which can be transmitted is more stable, and the power supply loop of the power supply is more stable.
On the basis of the above embodiment, the simulation circuit of a signal machine provided in the embodiment of the present invention further includes a feedback module, the feedback module is electrically connected to the controller, and the controller is connected to an upper computer;
the feedback module is electrically connected with the first line, the second line, the third line and the fourth line respectively;
the feedback module is configured to collect line signals of the first line, the second line, the third line and the fourth line;
the controller is further configured to send the line signal to the upper computer.
Optionally, as shown in fig. 3, the annunciator simulation circuit further includes a feedback module 9, the feedback module 9 is electrically connected to the controller 1, and the controller 1 is connected to the upper computer; the feedback module 9 is electrically connected with the first line, the second line, the third line and the fourth line respectively; the feedback module 9 is used for acquiring line signals of the first line, the second line, the third line and the fourth line. The line signals of the first line, the second line and the third line are all control signals, and the switching states of the first controlled change-over switch 21, the second controlled change-over switch 22, the third controlled change-over switch 23 and the tail end controlled change-over switch 3 to be controlled can be determined through the control signals. And the line signal of the fourth line is a power supply signal, and whether the power supply 4 is normally connected to the annunciator simulation circuit can be judged through the power supply signal. The controller is used for sending the control signal and the power supply signal to the upper computer so as to enable the upper computer to perform state comparison and analysis.
In the embodiment of the utility model, the feedback module is introduced, so that the control action of the controller on each controlled change-over switch and the access state of the power supply can be monitored in real time, and the normal work of the simulation circuit of the signal machine is ensured.
On the basis of the foregoing embodiment, in the traffic signal simulation circuit provided in the embodiment of the present invention, the controller is configured to send a first control signal to the first control terminal through the first line, send a second control signal to the first common terminal through the second line, and send a third control signal to the third common terminal through the third line;
the priorities of the first control signal, the second control signal, and the third control signal are sequentially decreased.
Optionally, in this embodiment of the present invention, when the controller controls each controlled switch, the control action may be performed independently, that is, the controller may send a first control signal to the first control end through the first line to control the switch state of the first controlled switch, send a second control signal to the first common end through the second line to control the switch state of the second controlled switch, and send a third control signal to the third common end through the third line to control the switch state of the end-controlled switch. That is, load resistors with different resistances are connected to different controlled switches and are controlled by independent control signals.
It should be noted that the priorities of the first control signal, the second control signal, and the third control signal may be sequentially decreased to avoid load collision.
The control logic of the controller is shown in table 1.
TABLE 1 control logic table of controller
| A first control signal | The second control signal | Third control signal | Description of the utility model |
| 0 | 0 | 0 | Normal load |
| 1 | X | X | I-0 mA fault mode |
| 0 | 1 | X | 40mA<I<80mA failure mode |
| 0 | 0 | 1 | 0mA<I<40mA failure mode |
The three controlled switches are controlled by three independent control signals of the controller, and the control logic is as shown in table 1: "0" indicates that the control signal is not output, and the controlled changeover switch is not operated. "1" indicates that the control signal is output, and the controlled change-over switch is operated. "X" indicates a don't care state, and whether the controlled change-over switch is active or not does not affect the fault injection mode.
When the three control signals are not output, the output of the signal machine control panel is connected with a normal load to obtain a normal load current.
First control signal output, no matter whether two other control signals export, semaphore control panel load all is switched to no-load state, and semaphore control panel load current is 0mA this moment, realizes the 0mA disconnected silk fault mode injection test of semaphore.
The first control signal keeps not outputting, and when the second control signal was output, no matter whether third control signal exported, semaphore control panel load was switched to first load resistance, according to inspection ageing and test demand, through the resistance size of adjustment first load resistance, can retrain semaphore control panel load current to 40mA between I <80mA, realizes that the semaphore 40mA reaches 80mA fault mode injection test.
The first control signal and the second control signal are kept not to be output, when the third control signal is output, the load of the control board of the annunciator is switched to the second load resistor, similarly, the load current of the control board of the annunciator can be restricted to 0mA < I <40mA by adjusting the resistance value of the second load resistor according to the requirements of aging inspection and test, and the fault mode injection test of the annunciator from 0mA to 40mA is realized.
Thus, the priority of the three control signal outputs is first control signal > second control signal > third control signal. And (3) realizing the injection of the fault mode of the semaphore I being 0mA, and outputting a first control signal. And realizing fault mode injection of the signaler with 40mA < I <80mA, wherein the first control signal needs to be kept in a non-output state, and the second control signal is output. And the injection test of the 0mA to 40mA fault mode of the annunciator is realized, the first control signal and the second control signal are required to be kept not to be output, and the third control signal is output.
In the embodiment of the utility model, the controller sends three independent control signals to control the switching state of each controlled selector switch, so that independent control of different controlled selector switches can be ensured. Moreover, different control signals have different priorities, so that the load conflict of the control panel of the signal machine can be avoided.
On the basis of the above embodiment, in the traffic signal simulation circuit provided in the embodiment of the present invention, the properties of the contacts connected to the first common terminal and the second common terminal are the same, and the properties of the contacts connected to the third common terminal and the fourth common terminal are the same.
Optionally, in each controlled diverter switch adopted in the embodiment of the present invention, the two common terminals included in the controlled diverter switch are connected to the same contact, and the contact may include a normally closed contact and a normally open contact, that is, the two common terminals are connected to the normally open contact simultaneously or to the normally closed contact simultaneously. In the embodiment of the present invention, it is required to ensure that the properties of the contacts connected to the first common terminal and the second common terminal are consistent, the properties of the contacts connected to the third common terminal and the fourth common terminal are consistent, the properties of the contacts connected to the fifth common terminal and the sixth common terminal are consistent, and the properties of the contacts connected to the tail end common terminal E and the tail end common terminal F are consistent.
In the embodiment of the utility model, the properties of the contacts connected with the first public end and the second public end are set to be consistent, and the properties of the contacts connected with the third public end and the fourth public end are set to be consistent, so that synchronous control on different controlled change-over switches can be realized.
On the basis of the above embodiment, in the annunciator simulation circuit provided in the embodiment of the present invention, the resistance value of the first load resistor is determined based on the voltage value of the power supply and the fault mode threshold current value; and the resistance value of the second load resistor is determined based on the resistance value of the internal resistance of the annunciator.
Optionally, in the embodiment of the present invention, when determining the resistance values of the first load resistor and the second load resistor, the resistance value of the first load resistor may be determined based on the voltage value of the power supply and the fault mode threshold current value, so that the traffic signal simulation circuit may simulate the traffic signal in the fault mode. The failure mode threshold current value may be set according to a set failure mode, and for example, the failure mode threshold current values may be set to 40mA and 80mA, respectively. The resistance value of the internal resistance of the annunciator can be directly used as the resistance value of the second load resistor, so that the annunciator simulation circuit can simulate a normal annunciator.
In the embodiment of the utility model, the signaler simulation circuit can simulate a normal signaler and a signaler in a fault mode by configuring the resistance values of the first load resistor and the second load resistor, so that the inspection efficiency of the signaler control board is improved.
On the basis of the above embodiment, in the semaphore simulation circuit provided in the embodiment of the present invention, the power supply is a power supply of the semaphore control board.
Optionally, in the embodiment of the present invention, the power supply may have a power supply of the traffic signal control board, so that the traffic signal control board may have a capability of collecting a load current, and at the same time, the on-off state of each controlled switch may be determined, so as to perform inspection and cyclic aging on the traffic signal control board.
On the basis of the above embodiment, the annunciator simulation circuit provided in the embodiment of the present invention can select different types of controllers to control each controlled switch, and as long as the resources of the controllers are sufficient, a single controller can control a plurality of groups of controlled switches, and can implement simulation of a plurality of groups of annunciators in a unit space according to actual requirements.
On the basis of the above embodiment, an embodiment of the present invention further provides an aging test circuit for a control board of a signal, including: a plurality of above-mentioned embodiments semaphore emulation circuit, a plurality of semaphore emulation circuit are connected with the power electricity of the semaphore control panel that awaits examining. In the embodiment of the utility model, one signal lamp on the signal machine can be simulated through one signal machine simulation circuit, and if the signal machine control board to be detected can control 8 signal machines, the signal machine control board to be detected can be connected with 24 signal machine simulation circuits to simulate 24 signal lamps.
The aging inspection circuit for the control board of the annunciator, provided by the embodiment of the utility model, adopts the annunciator simulation circuit to replace a real annunciator, so that the inspection cost of the control board of the annunciator to be inspected can be reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A signal emulation circuit, comprising: the system comprises a controller, a head end controlled change-over switch group, a tail end controlled change-over switch and a power supply; the head end controlled change-over switch group at least comprises a first controlled change-over switch and a second controlled change-over switch, the first controlled change-over switch comprises a first control end, a first public end and a second public end, the second controlled change-over switch comprises a second control end, a third public end and a fourth public end, the tail end controlled change-over switch comprises a tail end control end and a tail end public end, and the controller is respectively and electrically connected with the first control end, the first public end and the third public end;
the power supply, the second public end, the fourth public end and the tail end public end are electrically connected, the normally closed contact corresponding to the first public end is electrically connected with the second control end, the normally closed contact corresponding to the third public end is electrically connected with the tail end control end, the normally closed contact corresponding to the second public end is electrically connected with the fourth public end, and the normally closed contact corresponding to the fourth public end is electrically connected with the tail end public end;
a normally open contact corresponding to the fourth common end is electrically connected with a first load resistor, a normally closed contact corresponding to the tail end common end is electrically connected with a second load resistor, and the resistance values of the first load resistor and the second load resistor are different;
the controller is configured to control the switching states of the first controlled changeover switch, the second controlled changeover switch, and the tail-end controlled changeover switch, respectively.
2. The signaler simulation circuit according to claim 1, wherein a third load resistor is connected to the normally open contact corresponding to the tail-end common terminal, and the third load resistor is different from the first load resistor and the second load resistor in resistance value.
3. The signal emulation circuit of claim 1, wherein the head end controlled switch bank further comprises a third controlled switch comprising a third control terminal, a fifth common terminal, and a sixth common terminal;
the third control end is electrically connected with the normally closed contact corresponding to the first common end;
the fifth common end is electrically connected with the controller, and a normally closed contact corresponding to the fifth common end is electrically connected with the second control end;
the sixth common end is electrically connected with the normally closed contact corresponding to the second common end, the normally closed contact corresponding to the sixth common end is electrically connected with the fourth common end, the normally open contact corresponding to the sixth common end is electrically connected with a fourth load resistor, and the fourth load resistor is different from the first load resistor and the second load resistor in resistance value;
the controller is further configured to control a switch state of the third controlled diverter switch.
4. The traffic signal emulation circuit of claim 1, wherein the controller is electrically connected to the first control terminal, the first common terminal, and the third common terminal via a first line, a second line, and a third line, respectively;
the power supply is electrically connected with the second common terminal through a fourth line.
5. The signal machine simulation circuit according to claim 4, further comprising a feedback module, wherein the feedback module is electrically connected with the controller, and the controller is connected with an upper computer;
the feedback module is electrically connected with the first line, the second line, the third line and the fourth line respectively;
the feedback module is configured to collect line signals of the first line, the second line, the third line and the fourth line;
the controller is further configured to send the line signal to the upper computer.
6. The signal emulation circuit of claim 4, wherein the controller is configured to send a first control signal to the first control terminal over the first line, a second control signal to the first common terminal over the second line, and a third control signal to the third common terminal over the third line;
the priorities of the first control signal, the second control signal, and the third control signal are sequentially decreased.
7. The semaphore emulation circuit of any of claims 1-6, wherein the contacts to which the first common terminal and the second common terminal are connected are identical in nature, and the contacts to which the third common terminal and the fourth common terminal are connected are identical in nature.
8. The signal machine simulation circuit according to any one of claims 1 to 6, wherein a resistance value of the first load resistance is determined based on a voltage value of the power supply and a fault mode threshold current value; and the resistance value of the second load resistor is determined based on the resistance value of the internal resistance of the annunciator.
9. The signal emulation circuit of any of claims 1-6, wherein the power supply is a power supply of a signal control board.
10. An aging inspection circuit for a control board of a signal, comprising: a plurality of semaphore emulation circuits according to any of claims 1-9, electrically connected to the power supply of the control board of the semaphore to be checked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121391714.1U CN215833552U (en) | 2021-06-22 | 2021-06-22 | Signal machine simulation circuit and signal machine control panel aging inspection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121391714.1U CN215833552U (en) | 2021-06-22 | 2021-06-22 | Signal machine simulation circuit and signal machine control panel aging inspection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN215833552U true CN215833552U (en) | 2022-02-15 |
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|---|---|---|---|
| CN202121391714.1U Active CN215833552U (en) | 2021-06-22 | 2021-06-22 | Signal machine simulation circuit and signal machine control panel aging inspection circuit |
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| Country | Link |
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| CN (1) | CN215833552U (en) |
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