CN112014675A - Detection circuit and detection device of automatic passing neutral section system - Google Patents
Detection circuit and detection device of automatic passing neutral section system Download PDFInfo
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- CN112014675A CN112014675A CN202010908812.1A CN202010908812A CN112014675A CN 112014675 A CN112014675 A CN 112014675A CN 202010908812 A CN202010908812 A CN 202010908812A CN 112014675 A CN112014675 A CN 112014675A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present disclosure provides a detection circuit and a detection device of an automatic passing neutral section system, the detection circuit includes: the first switch unit is configured to convert the power supply of the input end into a first parameter power supply after being closed and output the first parameter power supply from the output end; the second switch unit is configured to convert the power supply of the input end into a second parameter power supply after being closed and output the second parameter power supply from the output end; the vehicle induction coil signal simulation unit is connected with the output end of the first switch unit and is configured to simulate an input signal of the vehicle induction coil to the automatic passing neutral system; the vehicle induction coil fault simulation unit is connected with the output end of the second switch unit, and when the vehicle induction coil fault is simulated, the second switch unit and the automatic neutral section passing system are disconnected; when the simulated vehicle induction coil has no fault, the second switch unit and the automatic neutral section passing system are conducted in response to the input signal; and the detection unit is connected with the output end of the first switch unit and is used for acquiring the output signal of the automatic passing neutral section system and outputting a matched detection signal according to the output signal.
Description
Technical Field
The disclosure relates to the technical field of locomotives, in particular to a detection circuit and a detection device of an automatic neutral section passing system.
Background
At present, the automatic neutral section passing system of an assembly locomotive has a plurality of models and suppliers. The used detection and maintenance equipment has large volume and complex operation. The key detection and maintenance processes are all mastered in the hands of manufacturers, and great bottleneck is brought to the detection and maintenance work of the automatic passing neutral section system. The distance between each manufacturer and the user is far, the manufacturer needs to return to the factory for repair, the vehicle is not taken off for repair, the repair period is short, and the like.
Under this background, portable easy operation satisfies the check out test set that the on-vehicle was overhauld and becomes to overhaul actual need simultaneously.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a detection circuit and a detection device of an automatic passing neutral section system, which improve the test efficiency and the preparation degree of the passing neutral section system.
According to one aspect of the present disclosure, there is provided a detection circuit of an automatic passing neutral section system, the detection circuit comprising:
the first switch unit is configured to convert the power supply of the input end into a first parameter power supply after being closed and output the first parameter power supply from the output end;
the second switch unit is configured to convert the power supply of the input end into a second parameter power supply after being closed and output the second parameter power supply from the output end;
the vehicle induction coil signal simulation unit is connected with the output end of the first switch unit and is configured to simulate an input signal of the vehicle induction coil to the automatic passing neutral system;
the vehicle induction coil fault simulation unit is connected with the output end of the second switch unit, and when the vehicle induction coil fault is simulated, the second switch unit and the automatic neutral section passing system are disconnected; when the simulated vehicle inductance coil has no fault, the simulated vehicle inductance coil is used for responding to the input signal to conduct the second switch unit and the automatic passing neutral section system;
and the detection unit is connected with the output end of the first switch unit, and is used for acquiring the output signal of the automatic neutral-section passing system after the input signal is logically judged by the automatic neutral-section passing system and outputting a matched detection signal according to the output signal.
In an exemplary embodiment of the present disclosure, the detection circuit further includes:
and the power supply unit is connected with the input ends of the first switch unit and the second switch unit, and the input ends of the first switch unit and the second switch unit are connected in parallel.
In an exemplary embodiment of the present disclosure, the detection circuit further includes:
a first power indicator lamp connected in parallel with an output terminal of the first switching unit and configured to display a switching state of the first switching unit;
a second power indicator lamp connected in parallel with an output terminal of the second switching unit and configured to display a switching state of the second switching unit.
In an exemplary embodiment of the present disclosure, the detection circuit further includes:
and the locomotive running direction simulation unit is connected with the output end of the first switch unit and used for simulating the running direction of the locomotive and outputting running direction signals matched with different running directions.
In an exemplary embodiment of the present disclosure, the detection circuit further includes:
and the first indicator light unit is connected with the locomotive running direction simulation unit and used for lighting an indicator light corresponding to the locomotive running direction.
In an exemplary embodiment of the present disclosure, the vehicle induction coil signal simulation unit includes:
the multi-group inching buttons and the intermediate relay control coils are respectively connected with the first switch unit in parallel, and the inching buttons and the intermediate relay control coils in each group are connected in series.
In an exemplary embodiment of the present disclosure, the vehicle induction coil fault simulation unit includes:
the multiple groups of self-locking buttons and the first intermediate relay are respectively connected with the second switch unit in parallel, and the self-locking buttons in each group are connected with the control coil of the first intermediate relay in series.
In an exemplary embodiment of the present disclosure, the detection circuit further includes:
and the input end of the second indicator light unit is connected with the power supply and is used for responding to the input signal to light.
In an exemplary embodiment of the present disclosure, the second indicator light unit includes:
and the plurality of groups of second intermediate relays and the indicator lamps are respectively connected with the second switch unit in parallel, and the second intermediate relays in each group are connected with the indicator lamps in series.
According to one aspect of the present disclosure, there is also provided a detection apparatus of an automatic passing neutral system, the detection apparatus having the detection circuit of the automatic passing neutral system.
The detection circuit of the automatic neutral section passing system comprises a first switch unit, a second switch unit, a vehicle induction coil signal simulation unit, a vehicle induction coil signal input unit, a vehicle induction coil internal logic judgment unit, a detection unit and a vehicle neutral section passing unit, wherein the first switch unit and the second switch unit are connected with a power supply and then can provide a first parameter power supply and a second parameter power supply with two different parameters, the vehicle induction coil signal simulation unit can simulate an input signal of a vehicle induction coil to the automatic neutral section passing system after being connected through the first switch unit, the vehicle induction coil fault simulation unit can respond to the input signal to conduct the second switch unit and the automatic neutral section passing system to be detected to receive an electric signal of the second switch unit when the vehicle induction coil is not in fault, the automatic neutral section passing system to be detected feeds back the output signal to the detection unit after being logically judged according to the internal system of the input electric signal, the detection unit outputs a matched detection signal according to the output signal of, the whole test process is simple to operate, the test result is visually and clearly displayed, and the test efficiency and accuracy are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic diagram of a detection circuit provided in an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a detection circuit provided in an embodiment of the present disclosure;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 2;
fig. 5 is a schematic diagram of an arrangement of electric devices in the detection apparatus provided in an embodiment of the present disclosure;
FIG. 6 is a front view of a detection device provided in one embodiment of the present disclosure;
FIG. 7 is a rear view of a detection device provided in an embodiment of the present disclosure;
fig. 8 is a right side view of a detection apparatus provided in an embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements other than the listed elements; the terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.
The inventor finds that the existing testing equipment in the market is large in size, complex in operation and high in value, belongs to ground equipment, and cannot meet urgent requirements of maintenance and autonomous repair without getting off. By researching and analyzing the composition and working principle of the automatic passing neutral section system, the method for testing the functions of the automatic passing neutral section system and the portable testing device are urgently required, so that the overhauling efficiency can be greatly improved, and the overhauling cost can be reduced.
Embodiments of the present disclosure first provide a detection circuit of an automatic neutral-section passing system, as shown in fig. 1, the detection circuit includes: the system comprises a first switch unit 100, a second switch unit 200, a vehicle induction coil signal simulation unit 300, a vehicle induction coil fault simulation unit 400 and a detection unit 500. The first switching unit 100 is configured to convert the power supply of the input terminal into the first parameter power supply after being closed and output the first parameter power supply from the output terminal; the second switching unit 200 is configured to convert the power supply of the input terminal into a second parameter power supply after being closed and output the second parameter power supply from the output terminal; the car induction coil signal simulation unit 300 is connected with the output end of the first switch unit 100 and is configured to simulate the input signal of the car induction coil to the automatic passing neutral system 600; the vehicle induction coil fault simulation unit 400 is connected with the output end of the second switch unit 200, and when the vehicle induction coil fault is simulated, the second switch unit 200 is disconnected with the automatic neutral section passing system 600; when the simulated vehicle induction coil has no fault, the second switch unit 200 and the automatic neutral-section passing system 600 are turned on in response to the input signal; the detection unit 500 is connected to the output end of the first switch unit 100, and after the input signal is logically determined by the automatic neutral-section passing system 600, the detection unit 500 is configured to obtain the output signal of the automatic neutral-section passing system 600 and output a matched detection signal according to the output signal.
The detection circuit of the auto-passing phase-splitting system provided by the present disclosure, after the first switch unit 100 and the second switch unit 200 are connected to a power supply, a first parameter power supply and a second parameter power supply with two different parameters can be provided, after the car inductance coil signal simulation unit 300 is switched on by the first switch unit 100, an input signal of the car inductance coil to the auto-passing phase-splitting system 600 can be simulated, when the car inductance coil fault simulation unit 400 simulates that the car inductance coil has no fault, the car inductance coil fault simulation unit 400 responds to the input signal to conduct the second switch unit 200 and the auto-passing phase-splitting system 600, the auto-passing phase-splitting system 600 to be detected can receive an electric signal of the second switch unit 200, after the auto-passing phase-splitting system 600 to be detected is logically determined according to an internal system of the input electric signal, the output signal is fed back to the detection unit 500, the detection unit 500 outputs a matched detection signal according to the, therefore, whether the function of the automatic neutral section passing system 600 of the locomotive is normal or not can be directly judged according to the detection signal output by the detection unit 500, the whole test process is simple to operate, the test result is visually and clearly displayed, and the test efficiency and the test accuracy are improved.
In addition, the electric appliance part of the detection circuit is compact in structure, portable and easy to operate, electric appliances used by the products all belong to marketized products, the later maintenance cost is low, the detection and the maintenance of the functions of the automatic passing neutral section system of different manufacturers and different models can be met, the on-board and off-board maintenance requirements are met, the part maintenance cost is reduced, the maintenance efficiency is greatly improved, the quality hidden danger of the automatic passing neutral section system is eliminated, and the performance of the locomotive is ensured. The purpose of automatic repair of the automatic passing neutral section system is achieved. The average outrepair cost per unit is saved by 0.3 million, and the total annual repair cost is estimated to be saved by 15 million by taking 50 locomotives as an example. The man-hour aspect: the time of outsourcing is saved by 120 hours per locomotive on average, and 6000 hours are expected to be saved by taking 50 locomotives as an example all the year round, so that the overhaul efficiency is greatly improved, and the total requirements of cost reduction and efficiency improvement of the current locomotives are met.
As shown in fig. 1, the detection circuit further includes: a power supply unit 700. The power supply unit 700 is connected to the input terminals of the first switch unit 100 and the second switch unit 200, and the input terminals of the first switch unit 100 and the second switch unit 200 are connected in parallel. The detection circuit can directly utilize an internal power supply to supply power by arranging the power supply unit 700, avoids connecting an external power supply, improves the portability of the detection circuit, can ensure that a stable power supply is provided by arranging the power supply unit 700, and improves the reliability of the detection circuit.
Specifically, the power supply unit 700 can be a 220V power frequency power supply, and fuses FU1 and FU2(10A) can be connected in series in the main circuit of the output end, so that an overcurrent protection effect is achieved. The main circuit of the output end is connected with two specifications of a first switch unit 100 (switch power supply 1) of 220AC-110VDC and a second switch unit 200 (switch power supply 2) of 220AC-3.5VDC in parallel, and the two specifications of the switch units respectively supply power for the automatic phase passing system 600, the vehicle induction coil signal simulation unit 300 and the vehicle induction coil fault simulation unit 400. In addition, an indicator lamp HL0 can be connected in parallel in the main circuit at the output end of the power supply unit 700 to indicate whether the power supply unit 700 is working normally.
In addition, the first switch unit 100 and the second switch unit 200 may be externally connected with an external power source, the external power source is connected with the first switch unit 100 and the second switch unit 200 through a switch SB0, and the power source may be turned on and off by controlling the switch SB 0.
Wherein, the 110V power supply supplies power for the automatic passing neutral section system 600 work and the vehicle induction coil signal simulation unit 300 and the detection unit 500, and the 3.5V power supply supplies power for the vehicle induction coil fault simulation unit 400.
As shown in fig. 2 to 4, the detection circuit further includes: a first power indicator lamp HL5 and a second power indicator lamp HL 10. A first power indicator lamp HL5 connected in parallel with an output terminal of the first switching unit 100, configured to display a switching state of the first switching unit 100; the second power indicator lamp HL10 is connected with the output end of the second switch unit 200 in parallel and is configured to display the switch state of the second switch unit 200, both switch units are provided with on-off indicator lamps, whether the feedback 110VDC and 3.5VDC power supplies are normal or not is fed back, and the working state is clearly visible.
Specifically, the detection circuit further includes: and the locomotive running direction simulation unit is connected with the output end of the first switch unit and is used for simulating the running direction of the locomotive and outputting running direction signals matched with different running directions. The automatic passing neutral section system of the locomotive receives the running direction signal, thereby realizing the simulation of the running direction of the locomotive.
Wherein, detection circuitry still includes: a first indicator light unit. The first indicator light unit is connected with the locomotive running direction simulation unit and used for lighting an indicator light corresponding to the locomotive running direction. Through setting up first pilot lamp unit, can be clear, direct judgement locomotive's simulation traffic direction.
As shown in fig. 2 and 3, the locomotive running direction simulation unit comprises a rotary switch S1, a rotary knob switch S1 (three-position two-normally open) is operated to simulate the forward or backward running state of the locomotive, the simulated running direction of the locomotive is fed back through state indicator lamps HL3 and HL4, each test action has a corresponding indicator lamp feedback state, the whole test process is simple and visual, and the test efficiency and accuracy are improved. Here, the rotary switch S1 is at the position of turning on the contact 1 and the contact 2 and turning off the contact 3 and the contact 4, or turning off the contact 3 and the contact 4 and turning off the contact 1 and the contact 2.
Specifically, the vehicle induction coil signal simulation unit includes: and a plurality of groups of inching buttons and intermediate relay control coils. The plurality of groups of inching buttons and the intermediate relay control coil are respectively connected with the first switch unit in parallel, and the inching buttons and the intermediate relay control coil in each group are connected in series.
As shown in FIG. 2 and FIG. 3, four sets of jog buttons and intermediate relay control coils are provided to simulate two sets of vehicle sensing coils when the locomotive runs forwards or backwards respectively, and the jog buttons SB1, SB2, SB3 and SB4 are connected in series with the intermediate relay control coils KA1, KA2, KA3 and KA4 respectively, so that the input signals of the vehicle sensing coils to the automatic neutral-section passing system can be simulated by operating the 4 kinds of jog buttons.
In an exemplary embodiment of the present disclosure, the vehicle induction coil fault simulation unit includes: the multiple groups of self-locking buttons and the first intermediate relay are respectively connected with the second switch unit in parallel, and the self-locking buttons in each group are connected with the control coil of the first intermediate relay in series.
As shown in fig. 2-4, four sets of self-locking buttons and first intermediate relays are provided, and the self-locking buttons of B5, SB6, SB7 and SB8 are respectively connected in series with KA1 ', KA 2', KA3 'and KA 4' intermediate relays, so that the failure output state of the vehicle sensing coil is simulated by operating the on-off of the self-locking buttons of SB5, SB6, SB7 and SB 8. KA1 ', KA 2', KA3 ', KA 4' intermediate relays respond to KA1, KA2, KA3, KA4 intermediate relay control coil closures, respectively.
The locomotive is provided with two groups of vehicle sensing coils through the front and the back, each group of vehicle sensing coils comprises two vehicle sensing coils and is provided with four vehicle sensing coils of T1, T2, T3 and T4, the SB1, SB2, SB3 and SB4 inching buttons provided by the disclosure respectively simulate input signals of the vehicle sensing coils T1, T2, T3 and T4, the SB5, SB6, SB7 and SB8 self-locking buttons respectively simulate input fault signals of T1, T2, T3 and T4, and the knob switch S1 respectively simulates forward and backward analog input of the locomotive by rotating to conduct a 110V power supply and simulates the running direction of the locomotive.
Specifically, the detection circuit further includes: and the input end of the second indicator light unit is connected with the power supply and used for responding to the input signal to light.
Wherein the second indicator light unit includes: and the multiple groups of second intermediate relays and the indicator lamps are respectively connected with the second switch unit in parallel, and the second intermediate relays in each group are connected with the indicator lamps in series. As shown in fig. 2 to 4, four sets of second intermediate relays and indicator lamps, KA1 ″, KA2 ″, KA3 ″, KA4 ″, which are connected in series to HL6, HL7, HL8, and HL9 indicator lamps, are provided, where HL6 is a pulse signal indicator lamp of the vehicle sensor coil T1, HL7 is a pulse signal indicator lamp of the vehicle sensor coil T2, HL8 is a pulse signal indicator lamp of the vehicle sensor coil T3, and HL9 is a pulse signal indicator lamp of the vehicle sensor coil T4. The KA1 ', KA 2', KA3 ', KA 4' intermediate relays respond to KA1, KA2, KA3, KA4 intermediate relay control coil closures, respectively.
As shown in fig. 2-4, each set of the latching buttons is connected to an interface with the output end of the first intermediate relay, and is respectively provided with an X2 interface, an X3 interface, an X4 interface, and an X5 interface for simulating a T1 pulse signal, a T2 pulse signal, a T3 pulse signal, and a T4 pulse signal, wherein the X2 interface, the X3 interface, the X4 interface, and the X5 interface may be three-core sockets, and are connected to plugs corresponding to the automatic neutral section system, so that a function test can be performed.
As shown in fig. 2-4, a 20-core socket X1 is also included to connect with a corresponding plug of the auto-passing phase-splitting system for functional testing. The first switch unit is connected with the socket X1 to supply power to the auto-passing neutral section system, and the locomotive running direction simulation unit includes a rotary switch S1 connected with the socket X1 to output the simulated locomotive running direction to the auto-passing neutral section system.
In addition, the socket X1 includes a forecast/recovery signal interface 13 and a forced breaking signal interface 14, the forecast/recovery signal interface 13 is connected in series with an HL1 forecast/recovery signal indicating lamp, and the forced breaking signal interface 14 is connected in series with an HL2 forced breaking signal indicating lamp.
In addition, the socket X1 may also be provided with an expansion interface to upgrade the detection circuit.
According to one aspect of the present disclosure, there is also provided a detection apparatus of an automatic passing neutral system, the detection apparatus having the detection circuit of the automatic passing neutral system. The detection device of the automatic passing neutral section system can achieve the purpose of automatic passing neutral section system self-service repair, is portable and easy to operate, can meet various repair requirements of getting on a vehicle and getting off the vehicle, greatly improves the repair efficiency and saves the commission repair cost.
The arrangement of the electrical devices in the testing device 800 provided by the present disclosure is shown in fig. 5, where the area 1 is each status indicator light, button switch, transfer switch, etc.; the area 2 is the distribution board of each socket, a terminal row, an intermediate relay, a resistor and the like; the area 3 is a switch power supply, a fuse, a power input socket and the like of various specifications.
As shown in fig. 6, the front view of the testing device 800 clearly shows the distribution and functions of the indicator lights and the button switches, the overall distribution of the operation interface is compact, the operation buttons are adjacent to the indicator buttons, the operation is convenient, and the test indication is visual and clear.
As shown in fig. 7, the back view of the testing device 800 clearly shows the external power input interface of the testing device.
As shown in fig. 8, the right side view of the testing apparatus 800 shows an external test socket interface, in which 1 20-core socket and 4 3-core sockets are connected to a corresponding plug of the auto-neutral system, so as to perform a functional test.
The testing device provided by the disclosure combs and analyzes point position definitions of plugs of the automatic passing neutral section system by researching and analyzing the working power supply specification, the working principle, the logic control function and the external circuit signal input mode of the automatic passing neutral section system, and researches a set of method for testing the automatic passing neutral section function and the testing device thereof. According to the functional principle of the automatic neutral section passing system, two specifications of switching power supplies are selected, one power supply is used for supplying power to the tested automatic neutral section passing system and output signals of the tested automatic neutral section passing system, the other power supply is used for simulating voltage signals fed back by the vehicle induction coils, and whether the signals of the vehicle induction coils at various positions are normal or not and state indication of the vehicle induction coils are simulated through a reasonably designed logic circuit (detailed in figures 2-4). As can be seen from the front view of the testing device, 4 coil trigger buttons and 4 fault simulation buttons with self-locking functions are designed in the testing device, so that all external circuit input conditions in the locomotive application can be simulated; the locomotive application direction can be simulated through a change-over switch in the circuit; identifying through point location definition, identifying that when the automatic passing neutral section system obtains a normal or abnormal vehicle induction coil signal, the automatic passing neutral section system outputs a 110V high-level signal to the control system through a corresponding point location, and designing an indicator light with different colors connected in series with the output point location for displaying whether the automatic passing neutral section system is normal in function; by the device, the signal state of the locomotive in the actual operation condition and the passing neutral section can be simulated, whether the function of the passing neutral section system of the system is normal can be tested, and the purpose of overhauling and testing the function of the automatic passing neutral section system is achieved.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A detection circuit for an automatic passing neutral section system, comprising:
the first switch unit is configured to convert the power supply of the input end into a first parameter power supply after being closed and output the first parameter power supply from the output end;
the second switch unit is configured to convert the power supply of the input end into a second parameter power supply after being closed and output the second parameter power supply from the output end;
the vehicle induction coil signal simulation unit is connected with the output end of the first switch unit and is configured to simulate an input signal of the vehicle induction coil to the automatic passing neutral system;
the vehicle induction coil fault simulation unit is connected with the output end of the second switch unit, and when the vehicle induction coil fault is simulated, the second switch unit and the automatic neutral section passing system are disconnected; when the simulated vehicle inductance coil has no fault, the simulated vehicle inductance coil is used for responding to the input signal to conduct the second switch unit and the automatic passing neutral section system;
and the detection unit is connected with the output end of the first switch unit, and is used for acquiring the output signal of the automatic neutral-section passing system after the input signal is logically judged by the automatic neutral-section passing system and outputting a matched detection signal according to the output signal.
2. The detection circuit of claim 1, further comprising:
and the power supply unit is connected with the input ends of the first switch unit and the second switch unit, and the input ends of the first switch unit and the second switch unit are connected in parallel.
3. The detection circuit of claim 1, further comprising:
a first power indicator lamp connected in parallel with an output terminal of the first switching unit and configured to display a switching state of the first switching unit;
a second power indicator lamp connected in parallel with an output terminal of the second switching unit and configured to display a switching state of the second switching unit.
4. The detection circuit of claim 1, further comprising:
and the locomotive running direction simulation unit is connected with the output end of the first switch unit and used for simulating the running direction of the locomotive and outputting running direction signals matched with different running directions.
5. The detection circuit of claim 4, further comprising:
and the first indicator light unit is connected with the locomotive running direction simulation unit and used for lighting an indicator light corresponding to the locomotive running direction.
6. The detection circuit of claim 1, wherein the vehicle sensing coil signal simulation unit comprises:
the multi-group inching buttons and the intermediate relay control coils are respectively connected with the first switch unit in parallel, and the inching buttons and the intermediate relay control coils in each group are connected in series.
7. The detection circuit of claim 6, wherein the vehicle induction coil fault simulation unit comprises:
the multiple groups of self-locking buttons and the first intermediate relay are respectively connected with the second switch unit in parallel, and the self-locking buttons in each group are connected with the control coil of the first intermediate relay in series.
8. The detection circuit of claim 7, further comprising:
and the input end of the second indicator light unit is connected with the power supply and is used for responding to the input signal to light.
9. The detection circuit according to claim 8, wherein the second indicator light unit comprises:
and the plurality of groups of second intermediate relays and the indicator lamps are respectively connected with the second switch unit in parallel, and the second intermediate relays in each group are connected with the indicator lamps in series.
10. A test device for an automatic passing neutral system comprising a test circuit for an automatic passing neutral system according to any one of claims 1 to 9.
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