CN114003021A - Function test bed for universal electric control unit of locomotive - Google Patents
Function test bed for universal electric control unit of locomotive Download PDFInfo
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- CN114003021A CN114003021A CN202111271686.4A CN202111271686A CN114003021A CN 114003021 A CN114003021 A CN 114003021A CN 202111271686 A CN202111271686 A CN 202111271686A CN 114003021 A CN114003021 A CN 114003021A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
Abstract
The invention discloses a locomotive general electric control unit function test bed which comprises a control cabinet, a test cabinet, an inter-cabinet cable and a workbench. The control cabinet comprises an industrial personal computer integrating a digital quantity output board card, an MVB communication board card and an FIP communication board card, a program control power supply, an electronic load, a power amplifier, a relay matrix, a relay, a connector panel and a USB modular instrument; the test cabinet comprises an electric control unit of the locomotive to be tested and a connector panel; the industrial personal computer carries out data interaction with the tested locomotive electric control unit through RS232, MVB and FIP communication, controls the relay matrix through the digital quantity output board card, controls the program control instrument through serial communication, and realizes function test and simulation of the tested locomotive electric control unit. The invention has the advantages of high integration level, easy maintenance and function expansion, high utilization rate of the test bed, low space occupation rate of the field and small workload of equipment management, and can meet the requirement of automatic test of various locomotive control units.
Description
Technical Field
The invention relates to the field of testing devices, in particular to a locomotive general electric control unit function test bed.
Background
The test bed of the locomotive electric control unit is used for detecting the performance and parameters of the electric control unit and determining the technical state of the electric control unit, and plays an important role in the locomotive electric control unit maintenance and manufacturing industry. The existing locomotive electric control unit test bed is designed aiming at a single locomotive electric control unit, and has the defects of low test bed utilization rate, high site space occupancy rate and large equipment management workload. At present, no universal test bed capable of testing various locomotive electric control units exists in China.
Disclosure of Invention
The invention provides a locomotive general electric control unit function test bed, which aims to overcome the technical problems of limitation in detection of a locomotive electric control unit and the like.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a locomotive general electric control unit function test bed comprises: the system comprises a control cabinet, a test cabinet, a cable between cabinets and a workbench;
the control cabinet comprises an industrial personal computer integrating a digital quantity output board card, an MVB communication board card and an FIP communication board card, a program control power module, an electronic load, a power amplifier, a relay matrix, a double-pole relay, a single-pole relay, a connector panel and a USB modular instrument;
the program-controlled power supply module comprises a first program-controlled power supply and a second program-controlled power supply;
the industrial personal computer controls the output of the first program control power supply through serial communication, and the first program control power supply is connected to the electric control unit of the locomotive to be tested through the public end of the double-pole relay, the normally open end of the double-pole relay, the CNT interface of the control cabinet connector panel, the inter-cabinet cable and the TST interface of the test cabinet connector panel, so as to provide a power supply for the electric control unit of the locomotive to be tested;
the negative electrode of the output end of the second programmable power supply is connected with the common end of the single-pole relay and the negative electrode of the electronic load, the normally-opened end of the single-pole relay and the positive electrode of the electronic load are connected with the L line of the Xi end of the relay matrix, and the positive electrode of the output end of the second programmable power supply is connected with the H line of the Xi end of the relay matrix;
the electric control unit of the tested locomotive carries out data interaction with the industrial personal computer;
the digital quantity output board card controls the opening and closing of the single-pole relay double-pole relay and the relay matrix through the RS232 communication bus;
the MVB communication board is communicated with the tested locomotive electric control unit through an MVB communication bus and used for testing whether the MVB communication function of the tested locomotive electric control unit is normal or not;
the FIP communication board is communicated with the tested locomotive electric control unit through an FIP communication bus and used for testing whether the FIP communication function of the tested locomotive electric control unit is normal or not;
the test cabinet comprises a tested locomotive electric control unit and a connector panel.
Furthermore, the Yi end of the relay matrix is connected with the normally open end of the single-pole relay, and the Xi end of the relay matrix is connected with the common end of the single-pole relay.
Furthermore, the industrial personal computer controls the closing of the single-pole relay through serial communication to control the output of the second programmable power supply, and the second programmable power supply is connected to the electric control unit of the locomotive to be tested through the Xi end of the relay matrix, the Yi end of the relay matrix, the CNT interface of the control cabinet connector panel, the inter-cabinet cable and the TST interface of the test cabinet connector panel and is used for providing digital quantity input signals and analog quantity input signals of the locomotive control unit.
Furthermore, the industrial personal computer controls the disconnection of the single-pole relay through serial communication, controls the output of the second programmable power supply, is connected to the electric control unit of the locomotive to be tested through the electronic load, the Xi end of the relay matrix, the Yi end of the relay matrix, the CNT interface of the control cabinet connector panel, the inter-cabinet cable and the TST interface of the test cabinet connector panel, and is used for detecting the digital quantity output signal of the locomotive control unit.
Furthermore, the industrial personal computer controls the electronic load to operate through serial communication, and further detects an analog quantity signal output from the electric control unit of the locomotive to be detected; the analog signal reaches the electronic load through a TST interface of a test cabinet connector panel, an inter-cabinet cable, a CNT interface of a control cabinet connector panel, a Yi end of a relay matrix and an Xi end of the relay matrix.
Furthermore, the USB modular instrument comprises a signal generator, the industrial personal computer controls the output of the signal generator in the USB modular instrument through serial communication, and the output of the signal generator is connected to the tested locomotive electric control unit through a power amplifier, an Xi end of a relay matrix, a Yi end of the relay matrix, a CNT interface of a control cabinet connector panel, an inter-cabinet cable and a TST interface of a test cabinet connector panel, and is used for providing a PWM input signal of the tested locomotive electric control unit.
Further, the USB modular instrument comprises an oscilloscope, and the industrial personal computer controls the oscilloscope in the USB modular instrument to operate through serial communication so as to detect the PWM signal output from the electric control unit of the locomotive to be tested; the PWM signals reach the oscilloscope through a TST interface of the test cabinet connector panel, a cable between the cabinets, a CTN interface of the control cabinet connector panel, a Yi end of the relay matrix and an Xi end of the relay matrix.
Furthermore, the USB modular instrument further comprises a universal meter, the industrial personal computer controls the universal meter in the USB modular instrument to operate through a serial communication line, and the universal meter in the USB modular instrument is connected to the electric control unit of the locomotive to be tested through the Xi end of the relay matrix, the Yi end of the relay matrix, the CNT interface of the control cabinet connector panel, the cable between the cabinets and the TST interface of the test cabinet connector panel and is used for detecting the resistance value of an analog quantity input channel of the electric control unit of the locomotive to be tested.
Furthermore, the industrial personal computer RS232 communication bus, the MVB communication bus and the FIP communication bus interface are connected to the communication interface of the locomotive control unit through the CNT interface of the control cabinet connector panel, the inter-cabinet cable and the TST interface of the test cabinet connector panel and used for detecting the communication function of the tested locomotive electric control unit.
Furthermore, the test cabinet is connected with the control cabinet in a connector-cable-connector connection mode.
Has the advantages that: the industrial personal computer integrating the digital quantity output board card, the MVB communication board card and the FIP communication board card, the program control power module, the electronic load, the power amplifier, the relay matrix, the double-pole relay, the single-pole relay, the connector panel and the USB modular instrument are integrated in the test bed, data transmission is carried out through the RS232 communication bus, the MVB communication bus and the FIP communication bus, maintenance and function expansion are easy, the advantages of high utilization rate of the test bed, low space occupation rate of a field and small workload of equipment management are achieved, and the requirement of automatic testing of various locomotive control units can be met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a test stand topology of the present invention;
FIG. 2 is a general layout of the present invention;
FIG. 3 is a schematic diagram of digital input testing;
FIG. 4 is a schematic diagram of an analog input test;
FIG. 5 is a schematic diagram of a PWM input test;
FIG. 6 is a schematic diagram of a digital output test;
FIG. 7 is a schematic diagram of an analog output test;
fig. 8 is a schematic diagram of a PWM output test.
Wherein, 1, an industrial personal computer; 2. a first programmable power supply; 3. a second programmable power supply; 4. an electronic load; 5. a USB modular instrument integrating an oscilloscope, a signal generator and a universal meter; 6: a power amplifier; 7. a relay matrix; 8. a control cabinet connector panel; 9. a cable; 10. a test cabinet cable; 11. the electric control unit of the locomotive to be tested; 12. an electronic load; 13. a 220V power indicator lamp; 14. a 12V power indicator; 15. a 24V power indicator lamp; 16. a radiator fan switch; 17. a switch of the control cabinet; 18. an emergency stop button; 19. a power supply time sequence controller; 20. an industrial personal computer; 21: an inter-cabinet cable; 22: a display; 23. a test cabinet connector panel; 24. a work table; 25. a first accompanying device; 26. a second accompanying device; 27. a first locomotive electrical control unit placement area; 28: a second locomotive electrical control unit placement area; 29. a third locomotive electronic control unit placement area; 30. and a fourth locomotive electronic control unit placing area.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, 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.
The embodiment provides a function test bed of a universal electronic control unit of a locomotive, as shown in fig. 1-2, comprising: the system comprises a control cabinet, a test cabinet, a cable between cabinets and a workbench;
the control cabinet comprises an industrial personal computer integrating a digital quantity output board card, an MVB communication board card and an FIP communication board card, a program control power supply module, an electronic load, a power amplifier, a relay matrix, a double-pole relay, a single-pole relay, a connector panel and a USB modular instrument, wherein the USB modular instrument comprises an oscilloscope, a signal generator and a universal meter;
the test cabinet comprises a tested locomotive electric control unit and a connector panel;
the workbench comprises a rack and a display;
the electric control unit of the tested locomotive carries out data interaction with the industrial personal computer;
the digital quantity output board card controls the opening and closing of the single-pole relay double-pole relay and the relay matrix through the RS232 communication bus;
the MVB communication board is communicated with the tested locomotive electric control unit through an MVB communication bus and used for testing whether the MVB communication function of the tested locomotive electric control unit is normal or not;
the FIP communication board is communicated with the tested locomotive electric control unit through an FIP communication bus and used for testing whether the FIP communication function of the tested locomotive electric control unit is normal or not;
the end of the relay matrix Yi is connected with the normally open ends of the relays DPST _ 1-i-DPST _5-i (wherein i belongs to { x |1 ≦ x ≦ 64, and x is an integer }), and the end of the relay matrix Xi is connected with the common ends of the relays DPST _ i-1-DPST _ i-64 (wherein i belongs to { x |1 ≦ x ≦ 5, and x is an integer }).
In a specific embodiment, the programmable power supply module comprises a first programmable power supply PPS1 and a second programmable power supply PPS 2;
the industrial personal computer controls the closing of the single-pole relay through serial communication, controls the output of a second programmable power supply, is connected to the locomotive electric control unit to be tested through an Xi end of the relay matrix, a Yi end of the relay matrix, a CNT interface of the control cabinet connector panel, an inter-cabinet cable and a TST interface of the test cabinet connector panel, and is used for providing a digital quantity input signal and an analog quantity input signal of the locomotive control unit;
the industrial personal computer controls the output of the first programmable power supply PPS1 through serial communication, and is connected to the electric control unit of the locomotive to be tested through the public end of the double-pole Relay Relay _0-1, the normally open end of the double-pole Relay Relay _0-1, the CNT interface of the CNT-J9 connector panel of the control cabinet, the cable between the cabinets and the TST-J9 interface of the test cabinet connector panel, so as to provide a power supply for the electric control unit of the locomotive to be tested;
the negative electrode of the output end of the second program control power supply PPS2 is connected with the common end of the single-pole Relay Relay _0-2 and the negative electrode of the electronic load, the normally open end of the single-pole Relay Relay _0-2 and the positive electrode of the electronic load Eload2 are connected with the L line at the end of the Relay matrix X1, and the positive electrode of the output end of the second program control power supply PPS2 is connected with the H line at the end of the Relay matrix X1.
In the specific embodiment, the industrial personal computer controls the closing of the single-pole Relay Relay _0-2 through serial communication, controls the output of the second programmable power supply PPS2, and is connected to the locomotive electric control unit to be tested through an X1 end of the Relay matrix, Y1-Y16 ends of the Relay matrix, CNT-J1-CNT-J2 interfaces of the control cabinet connector panel, inter-cabinet cables and TST-J1-TST-J2 interfaces of the test cabinet connector panel, and is used for providing digital quantity input signals of the locomotive control unit.
In a specific embodiment, the industrial personal computer controls the disconnection of the single-pole Relay Relay _0-2 through serial communication, controls the output of the second programmable power supply PPS2, is connected to one end of a digital output interface of the locomotive electric control unit to be tested through a Relay matrix X1 end, L ends of Relay matrixes Y1-Y16, interfaces of control cabinet connector panels CNT-J3-CNT-J4, inter-cabinet cables and interfaces TST-J3-TST-J4 of a test cabinet connector panel, and detects a digital output signal of the locomotive electric control unit to be tested.
In a specific embodiment, the industrial personal computer controls the operation of an electronic load Eload1 through serial communication, and detects an analog quantity signal output from an electric control unit of the locomotive to be tested. The analog signal is transmitted to an electronic load ELoad1 through a TST-J7 interface of a test cabinet connector panel, an inter-cabinet cable, a CNT-J7 interface of a control cabinet connector panel, Y33-Y40 ends of a relay matrix and an X2 end of the relay matrix.
In a specific embodiment, the industrial personal computer controls the output of a signal generator in the USB modular instrument through serial communication, and the output is transmitted to the locomotive electric control unit to be tested through a power amplifier, a relay matrix X3 end, a relay matrix Y41-Y48 end, a CNT-J8 interface of a control cabinet connector panel, an inter-cabinet cable and a TST-J8 interface of a test cabinet connector panel, so as to provide a PWM input signal of the locomotive electric control unit to be tested.
In a specific embodiment, the industrial personal computer controls an oscilloscope in the USB modular instrument to operate through serial communication, and detects PWM signals output from the electric control unit of the locomotive to be tested. The PWM signal passes through a TST-J8 interface of a test cabinet connector panel, an inter-cabinet cable, a CTN-J8 interface of a control cabinet connector panel, ends of relay matrixes Y49-Y56 Yi and an end of a relay matrix X4 to an oscilloscope.
In a specific embodiment, the industrial personal computer controls a multimeter in the USB modular instrument to operate through a serial communication line, the multimeter in the USB modular instrument is connected to the locomotive electric control unit to be tested through a relay matrix X5 end, a relay matrix Y17-Y32 end, CNT-J5-CNT-J6 interfaces of a control cabinet connector panel, inter-cabinet cables and TST-J5-TST-J6 interfaces of a test cabinet connector panel, and the multimeter is used for detecting the resistance value of an analog quantity input channel of the locomotive electric control unit to be tested.
In a specific embodiment, the RS232 communication bus, the MVB communication bus and the FIP communication bus interface of the industrial personal computer are connected to the communication interface of the locomotive control unit through the CNT-J10 interface of the control cabinet connector panel, the inter-cabinet cable and the TST-J10 interface of the test cabinet connector panel, and are used for detecting the communication function of the electric control unit of the tested locomotive.
In a specific embodiment, the test cabinet is connected with the control cabinet through a connector-cable-connector.
As shown in FIG. 2, the control cabinet and the system cabinet of the present invention are connected together by respective interface panels and an inter-cabinet cable 14, and a display 22 is placed on a worktable 24 between the two cabinets. In order to prevent the working temperature of the industrial personal computer from being too high, a cooling fan is arranged above the industrial personal computer in the control cabinet and is controlled through a button switch 18. The control cabinet is provided with an indicator lamp 13 for indicating 220V power supply, an indicator lamp 15 for indicating 24V power supply, an indicator lamp 14 for indicating 12V power supply and an emergency stop button 18. And 17 is a switch of the control cabinet. For the test cabinet, 25 and 26 are accompanying devices used for simulating network communication between the electronic control units, and 27 to 30 are placing areas of the electronic control units.
Fig. 3 is a schematic diagram of digital input testing, taking measuring a digital input signal as an example: the industrial personal computer controls the Relay Relay _0-1 and the Relay Relay _0-2 to be closed, controls the output of a first programmable power supply PPS1, provides a power supply for an electric control unit of the tested locomotive, controls the Relay DPST _1-1 in a Relay matrix to be closed after the electric control unit of the tested locomotive is normally started, controls the output of a second programmable power supply PPS2, provides a digital quantity input signal for the electric control unit of the tested locomotive, transmits a state value of a digital quantity input channel to the industrial personal computer through an RS232, and judges whether the digital quantity input channel is normal or not through judging the state value; after the channel is tested, the industrial personal computer controls the Relay DPST _1-1 in the Relay matrix to be disconnected, after the digital quantity input channel is tested, the industrial personal computer controls the second program control power supply PPS2 to be closed and controls the Relay Relay _0-2 to be disconnected, and after all tests are finished, the industrial personal computer controls the first program control power supply PPS1 to be closed and controls the Relay Relay _0-1 to be disconnected.
Fig. 4 is a schematic diagram of analog input testing, taking measuring one analog input signal as an example: the industrial personal computer controls the Relay Relay _0-1 to be closed, controls the output of a first program control power supply PPS1, provides a power supply for the electric control unit of the tested locomotive, controls the Relay DPST _1-17 in the Relay matrix to be closed after the electric control unit of the tested locomotive is normally started, controls the output of a second program control power supply PPS2, provides an analog input signal for the electric control unit of the tested locomotive, transmits the value of an analog input channel to the industrial personal computer through RS232 by the electric control unit of the tested locomotive, and judges whether the function of the analog input channel is normal or not by judging the value by the industrial personal computer; after the channel is tested, the industrial personal computer controls the DPST _1-17 relays in the Relay matrix to be disconnected, after the analog input channel is tested, the industrial personal computer controls the second program control power supply PPS2 to be closed, and after all tests are finished, the industrial personal computer controls the first program control power supply PPS1 to be closed and controls the Relay Relay _0-1 to be disconnected.
Fig. 5 is a schematic diagram of a PWM input test, taking measuring one path of PWM input signal as an example: closing an industrial personal computer control Relay Relay 0-1, controlling the output of a first program control power supply PPS1, providing a power supply for an electric control unit of a tested locomotive, after the electric control unit of the tested locomotive is normally started, closing relays DPST _3-41 in a Relay matrix of the industrial personal computer control Relay, controlling a signal generator in a USB modular instrument, providing PWM input signals for the electric control unit of the tested locomotive, transmitting the value of a PWM input channel to an industrial personal computer by the electric control unit of the tested locomotive through RS232, and judging whether the function of the PWM input channel is normal or not by the industrial personal computer through judging the value; after the channel is tested, the industrial personal computer controls the DPST _3-41 relays in the Relay matrix to be disconnected, after the PWM input channel is tested, the industrial personal computer controls the signal generator in the USB modular instrument to be closed, and after all tests are finished, the industrial personal computer controls the first program control power supply PPS1 to be closed and controls the Relay Relay _0-1 to be disconnected.
Fig. 6 is a schematic diagram of digital output testing, taking measuring a digital output signal as an example: before the test is started, the Relay Relay _0-2 is guaranteed to be disconnected, the industrial personal computer controls the Relay Relay _0-1 to be closed, the first program control power supply PPS1 to output is controlled, a power supply is provided for an electric control unit of the tested locomotive, after the electric control unit of the tested locomotive is normally started, the industrial personal computer controls the Relay DPST _2-1 in a Relay matrix to be closed, the second program control power supply PPS2 to output is controlled, a digital output channel of the electric control unit of the tested locomotive is controlled to be opened through RS232, an electronic load Eload2 is controlled to work in a constant resistance mode and the voltage of the electronic load is read, and the industrial personal computer judges whether the digital output channel is normal or not according to the read voltage value; after the channel is tested, the industrial personal computer controls the Relay DPST _2-1 in the Relay matrix to be disconnected, after the digital quantity output channel is tested, the industrial personal computer controls the second program control power supply PPS2 and the electronic load Eload2 to be closed, and after all tests are finished, the industrial personal computer controls the first program control power supply PPS1 to be closed and controls the Relay Relay _0-1 to be disconnected.
Fig. 7 is a schematic diagram of an analog output test, which takes measuring one analog output signal as an example: the industrial personal computer controls the Relay Relay _0-1 to be closed, controls the output of a first program control power supply PPS1, provides a power supply for an electric control unit of the tested locomotive, controls the relays DPST _2-33 in a Relay matrix to be closed after the electric control unit of the tested locomotive is normally started, controls the output of an analog output channel of the electric control unit of the tested locomotive through RS232, controls the electronic load Eload1 to work in a constant resistance mode and reads the voltage of the electronic load, and judges whether the analog output channel is normal or not through the read voltage value; after the channel is tested, the industrial personal computer controls the DPST _2-33 relays in the Relay matrix to be disconnected, after the analog output channel is tested, the industrial personal computer controls the electronic load Eload1 to be closed, and after all tests are finished, the industrial personal computer controls the first program control power supply PPS1 to be closed and controls the Relay Relay _0-1 to be disconnected.
Fig. 8 is a schematic diagram of a PWM output test, which takes a measurement of one PWM output signal as an example: the industrial personal computer controls the Relay Relay _0-1 to be closed, controls the output of a first program control power supply PPS1, provides a power supply for the electric control unit of the tested locomotive, controls the relays DPST _4-48 in the Relay matrix to be closed after the electric control unit of the tested locomotive is normally started, controls the PWM output channel output of the electric control unit of the tested locomotive through RS232, controls the oscilloscope in the USB modular instrument to read, and judges whether the PWM output channel function is normal or not by reading the oscilloscope value in the USB modular instrument; after the channel is tested, the industrial personal computer controls the DPST _4-48 relays in the Relay matrix to be disconnected, after the PWM output channel is tested, the industrial personal computer controls the oscilloscope in the USB modular instrument to be closed, after all tests are finished, the industrial personal computer controls the first program control power supply PPS1 to be closed, and the Relay Relay _0-1 is controlled to be disconnected.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a locomotive general electric control unit function test platform which characterized in that includes: the system comprises a control cabinet, a test cabinet, a cable between cabinets and a workbench;
the control cabinet comprises an industrial personal computer integrating a digital quantity output board card, an MVB communication board card and an FIP communication board card, a program control power module, an electronic load, a power amplifier, a relay matrix, a double-pole relay, a single-pole relay, a connector panel and a USB modular instrument;
the program-controlled power supply module comprises a first program-controlled power supply and a second program-controlled power supply;
the industrial personal computer controls the output of the first program control power supply through serial communication, and the first program control power supply is connected to the electric control unit of the locomotive to be tested through the public end of the double-pole relay, the normally open end of the double-pole relay, the CNT interface of the control cabinet connector panel, the inter-cabinet cable and the TST interface of the test cabinet connector panel, so as to provide a power supply for the electric control unit of the locomotive to be tested;
the negative electrode of the output end of the second programmable power supply is connected with the common end of the single-pole relay and the negative electrode of the electronic load, the normally-opened end of the single-pole relay and the positive electrode of the electronic load are connected with the L line of the Xi end of the relay matrix, and the positive electrode of the output end of the second programmable power supply is connected with the H line of the Xi end of the relay matrix;
the electric control unit of the tested locomotive carries out data interaction with the industrial personal computer;
the digital quantity output board card controls the opening and closing of the single-pole relay double-pole relay and the relay matrix through the RS232 communication bus;
the MVB communication board is communicated with the tested locomotive electric control unit through an MVB communication bus and used for testing whether the MVB communication function of the tested locomotive electric control unit is normal or not;
the FIP communication board is communicated with the tested locomotive electric control unit through an FIP communication bus and used for testing whether the FIP communication function of the tested locomotive electric control unit is normal or not;
the test cabinet comprises a tested locomotive electric control unit and a connector panel.
2. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the Yi end of the relay matrix is connected with the normally open end of the single-pole relay, and the Xi end of the relay matrix is connected with the common end of the single-pole relay.
3. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the industrial personal computer controls the closing of the single-pole relay through serial communication, controls the output of the second programmable power supply, is connected to the locomotive electric control unit to be tested through the Xi end of the relay matrix, the Yi end of the relay matrix, the CNT interface of the control cabinet connector panel, the cable between the cabinets and the TST interface of the test cabinet connector panel, and is used for providing digital quantity input signals and analog quantity input signals of the locomotive control unit.
4. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the industrial personal computer controls the disconnection of the single-pole relay through serial communication, controls the output of the second programmable power supply, is connected to the electric control unit of the locomotive to be tested through an electronic load, the Xi end of the relay matrix, the Yi end of the relay matrix, the CNT interface of the control cabinet connector panel, the inter-cabinet cable and the TST interface of the test cabinet connector panel, and is used for detecting digital quantity output signals of the locomotive control unit.
5. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the industrial personal computer controls the electronic load to operate through serial communication, and further detects an analog quantity signal output from the tested locomotive electric control unit; the analog signal reaches the electronic load through a TST interface of a test cabinet connector panel, an inter-cabinet cable, a CNT interface of a control cabinet connector panel, a Yi end of a relay matrix and an Xi end of the relay matrix.
6. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the USB modular instrument comprises a signal generator, the industrial personal computer controls the output of the signal generator in the USB modular instrument through serial communication, and the output of the signal generator is transmitted to the tested locomotive electric control unit through a power amplifier, an Xi end of a relay matrix, a Yi end of the relay matrix, a CNT (carbon nanotube) interface of a control cabinet connector panel, an inter-cabinet cable and a TST (time delay test) interface of a test cabinet connector panel and is used for providing PWM (pulse width modulation) input signals of the tested locomotive electric control unit.
7. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the industrial personal computer controls the oscilloscope in the USB modular instrument to operate through serial communication so as to detect a PWM signal output from the electric control unit of the locomotive to be tested; the PWM signals reach the oscilloscope through a TST interface of the test cabinet connector panel, a cable between the cabinets, a CTN interface of the control cabinet connector panel, a Yi end of the relay matrix and an Xi end of the relay matrix.
8. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the USB modular instrument further comprises a universal meter, the industrial personal computer controls the universal meter in the USB modular instrument to operate through a serial communication line, and the universal meter in the USB modular instrument is connected to the tested locomotive electric control unit through an Xi end of the relay matrix, a Yi end of the relay matrix, a CNT (carbon nanotube) interface of the control cabinet connector panel, an inter-cabinet cable and a TST (transistor test) interface of the test cabinet connector panel and is used for detecting the resistance value of an analog quantity input channel of the tested locomotive electric control unit.
9. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the industrial personal computer RS232 communication bus, the MVB communication bus and the FIP communication bus interface are connected to a communication interface of the locomotive control unit through a CNT interface of the control cabinet connector panel, an inter-cabinet cable and a TST interface of the test cabinet connector panel and used for detecting the communication function of the tested locomotive electric control unit.
10. A locomotive general electric control unit function test stand according to claim 1, characterized in that: the test cabinet is connected with the control cabinet in a connector-cable-connector connection mode.
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| CN202111271686.4A CN114003021A (en) | 2021-10-29 | 2021-10-29 | Function test bed for universal electric control unit of locomotive |
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Application publication date: 20220201 |