CN111949011B - Performance test equipment of brake control unit - Google Patents
Performance test equipment of brake control unit Download PDFInfo
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- CN111949011B CN111949011B CN202010895749.2A CN202010895749A CN111949011B CN 111949011 B CN111949011 B CN 111949011B CN 202010895749 A CN202010895749 A CN 202010895749A CN 111949011 B CN111949011 B CN 111949011B
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- 238000011056 performance test Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 99
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000002955 isolation Methods 0.000 claims description 43
- 230000003750 conditioning effect Effects 0.000 claims description 26
- 238000004088 simulation Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 description 12
- 230000000875 corresponding effect Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000012905 input function Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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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
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The invention discloses performance test equipment of a brake control unit, which comprises an air path control device, wherein the air path control device comprises a plurality of air pipelines, and the diameters of the air pipelines are different; the air pipelines are all provided with electromagnetic valves, and the pressure in the air pipelines can be adjusted and the on-off of the air pipelines can be controlled through the electromagnetic valves; the air path control device is connected with a brake control unit through the air pipeline; the electric control device comprises a control module, an information acquisition module and a network communication module; the control module, the information acquisition module, the network communication module and the brake control unit are electrically connected. The technical problem that the performance test of the brake control units of multiple types of motor train units or different vehicles of the motor train unit of the same type cannot be met by the test equipment in the prior art is solved.
Description
Technical Field
The invention belongs to the technical field of detection tests, and particularly relates to performance test equipment of a brake control unit.
Background
The motor train unit brake control unit is a device which is arranged on each motor train unit to realize a brake control function and is a core component of a motor train unit brake system. The performance of the brake control unit of the motor train unit determines whether the brake control system can accurately, stably and reliably realize the control of the braking force, and is related to the running safety of the motor train unit. Therefore, pre-factory performance testing of a brake control unit is an important step in ensuring its performance.
At present, because tested pieces of motor train units of different models have great difference in the aspects of electrical interfaces, air channel interfaces and the like, most of the existing test equipment for the brake control units are only suitable for motor train units of specific models, the debugging requirements of the brake control units of motor train units of various models or motor train units of the same model and different vehicles cannot be met, and the universality, the compatibility and the expansibility are lacked.
Disclosure of Invention
The invention aims to provide performance test equipment for a brake control unit, and aims to solve the technical problem that the test equipment in the prior art cannot simultaneously meet the performance test of the brake control units of multiple types of motor train units or different vehicles of the motor train unit of the same type.
In order to realize the purpose, the invention adopts the following technical scheme:
a performance testing apparatus of a brake control unit, comprising:
the air channel control device comprises a plurality of air pipelines, and the diameters of the air pipelines are different; the air pipelines are all provided with electromagnetic valves, and the pressure in the air pipelines can be adjusted and the on-off of the air pipelines can be controlled through the electromagnetic valves; the air path control device is connected with the tested piece through the air pipeline;
the electric control device comprises a control module, an information acquisition module and a network communication module; the control module, the information acquisition module, the network communication module and the tested piece are electrically connected.
Preferably, the gas path control device comprises an air inlet passage and an air outlet passage which are communicated with each other;
the air inlet passage comprises a first air inlet passage, a second air inlet passage and a third air inlet passage, and each air inlet passage is communicated with the tested piece;
the air outlet passage comprises a first air outlet passage and a second air outlet passage, and each air outlet passage is communicated with the tested piece.
Preferably, the first air inlet passage comprises a proportional solenoid valve, a switch solenoid valve and a cut-off cock which are connected in sequence, and the cut-off cock is connected with a T port of the tested piece;
the second air inlet passage comprises a braking air storage cylinder, a proportional electromagnetic valve, a switch electromagnetic valve and a cut-off cock which are sequentially connected, and the cut-off cock is connected with an MR opening of a tested piece;
the third air inlet passage comprises a proportional electromagnetic valve, a simulated train pipe air cylinder, a switch electromagnetic valve and a cut-off cock which are sequentially connected, wherein the cut-off cock is connected with the M port of the tested piece;
preferably, the first air outlet passage is connected with a simulation brake cylinder, and the simulation brake cylinder is connected with a brake cylinder output port C of the tested piece; a switch electromagnetic valve and a cut-off cock are arranged between the simulation brake cylinder and a brake cylinder output port C of the tested piece and used for testing the brake cylinder pressure output by the brake control unit;
the second air outlet passage is connected with an output interface M of the tested piece, and a switch electromagnetic valve and a cut-off cock are sequentially arranged between the second air outlet passage and the output interface M of the tested piece; the testing device is used for testing the output pressure of the brake control unit during sanding and parking brake functions.
Preferably, each air inlet passage and each air outlet passage are provided with a test interface, so that the pressure test is realized;
and pressure sensors are arranged on each air inlet passage and each air outlet passage, so that the pressure is monitored in real time.
Preferably, the gas circuit control device further includes a speed signal generating device, and the speed signal generating device includes:
a servo driver electrically connected to the electrical control device;
the servo motor is electrically connected with the servo driver;
the speed measuring gear is connected with the power output end of the servo motor;
and the speed sensor is arranged on one side of the speed measuring gear and is electrically connected with the tested piece.
Preferably, the information acquisition module includes an analog acquisition unit, and the analog acquisition unit includes:
the analog quantity output board card is respectively and electrically connected with the speed signal generating device and the tested piece, and the speed signal generating device is electrically connected with the tested piece;
the analog quantity input board card is electrically connected with the tested piece;
the analog quantity output board card and the analog quantity input board card are electrically connected with the control module.
Preferably, an analog output isolation board card and an analog output conditioning board card are electrically connected between the analog output board card and the speed signal generating device as well as between the analog output board card and the tested piece;
an analog input isolation board card and an analog input conditioning board card are electrically connected between the analog input board card and the tested piece.
Preferably, the information acquisition module includes a switching value acquisition unit, and the switching value acquisition unit includes:
the switching value output board card is electrically connected with the tested piece, and a switching value output isolation board card is arranged between the switching value output board card and the tested piece;
the switching value input board card is electrically connected with the tested piece; a switching value input isolation board card is arranged between the switching value input board card and the tested piece;
the switching value output board card and the switching value input board card are electrically connected with the control module.
Preferably, the analog output board card is electrically connected with the proportional solenoid valve;
the analog output isolation board card and the analog output conditioning board card are electrically connected between the analog output board card and the proportional solenoid valve;
a pressure output port of the proportional solenoid valve is connected with the pressure sensor, and the pressure sensor sends the acquired pressure to the analog input board card through the analog input conditioning board card and the analog input isolating board card;
the switching value output board card is electrically connected with the switching electromagnetic valve; and the switching value output isolating plate is electrically connected between the switching value output board card and the switching electromagnetic valve.
Preferably, the network communication module comprises an MVB board card, an Ethernet board card and a CAN board card, and the MVB board card, the Ethernet board card and the CAN board card are all electrically connected with the tested piece.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention designs a performance test device of a brake control unit, which comprises a gas path control device and an electric control device. The air path control device comprises a plurality of air pipelines, and the diameters of the air pipelines are different; the air pipeline is provided with the electromagnetic valves, the pressure in the air pipeline can be adjusted and the on-off of the air pipeline can be controlled through the electromagnetic valves, and therefore the requirements of air channel interfaces and the air pressure of tested pieces of different models of motor train units can be met. Meanwhile, the electric control device comprises a control module, an information acquisition module and a network communication module; the real-vehicle environment of the motor train unit brake control unit is simulated by utilizing the control module, the information acquisition module and the network module, and various performance signals output by the motor train unit brake control unit are acquired.
Therefore, the test equipment can be compatible with the brake control units of different models of motor train units and the brake control units of the same model of motor train units with different train numbers for performance tests through the cooperative matching between the gas circuit control device and the electric control device. The technical problem that the tested equipment cannot simultaneously meet the performance test of the brake control units of multiple types of motor train units or different vehicles of the motor train unit of the same type in the prior art is solved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a performance testing device of a brake control unit;
FIG. 2 is a schematic structural diagram of the gas path control device;
FIG. 3 is a schematic structural diagram of an electrical control device;
FIG. 4 is a schematic diagram of the air path control device of the performance testing apparatus of the brake control unit;
fig. 5 is a functional principle diagram of a performance testing device of the brake control unit.
In the above figures: 1. a gas path control device; 101. a proportional solenoid valve; 102. switching on and off the electromagnetic valve; 103. the cock is cut off; 104. braking the air storage cylinder; 105. simulating a train pipe air reservoir; 106. simulating a brake cylinder; 107. a test interface; 108. a pressure sensor; 109. a filter; 110. a speed signal generating device; 111. a servo driver; 112. a servo motor; 113. a speed measuring gear; 114. a speed sensor; 115. a signal conversion device;
2. an electrical control device; 210. a control module; 220. an analog output board card; 221. an analog quantity output isolation board card; 222. analog quantity is input into the isolation board card; 223. outputting an analog quantity to a conditioning board card; 224. inputting analog quantity into a conditioning board card; 225. a switching value output board card; 226. a switching value input board card; 227. switching value output isolation board card; 228. the switching value is input into an isolation board card; 229. inputting an analog quantity into a board card; 240. a relay bank; 241. a disconnection protector bank; 242. a terminal block; 243. an air switch bank; 250. an MVB board card; 260. an Ethernet board card; 270. a CAN board card; 280. reserving a network interface;
3. a tested piece; 31. an analog quantity signal input interface; 32. an analog quantity signal output interface; 33. a speed signal input interface; 34. a switching value signal input interface; 35. a switching value signal output interface; 36. a network signal interface;
4. hoisting the device; 5. a printer; 6. an upper computer; 7. an emergency stop button; 8. a total air pressure gauge; 9. a power indicator light; 10. an equipment failure light; 11. a brake cylinder pressure gauge; 12. a router.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", "first", "second", etc. indicate orientations or positional relationships based on the positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present application, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or through an intermediary profile. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the embodiment of the application, in order to solve the problem that the test equipment of the brake control unit in the prior art cannot simultaneously meet the performance test of the brake control units of multiple types of motor train units or different vehicles of the motor train units of the same type, the general idea is as follows:
the invention designs a performance test device of a brake control unit, which comprises a gas circuit control device 1 and an electric control device 2. The air path control device 1 comprises a plurality of air pipelines, and the diameters of the air pipelines are different; the air pipeline is provided with the electromagnetic valves, the pressure in the air pipeline can be adjusted and the on-off of the air pipeline can be controlled through the electromagnetic valves, and therefore the air pipeline interface requirements and the air pressure requirements of brake control units of motor train units of different models can be met. Meanwhile, the electrical control device 2 comprises a control module 210, an information acquisition module and a network communication module; the control module 210, the information acquisition module and the network module are used for simulating the real-vehicle environment of the brake control unit of the motor train unit and acquiring various performance signals output by the brake control unit of the motor train unit.
Therefore, the test equipment can be compatible with the performance tests of the tested piece 3 of the motor train unit with different models and the tested piece 3 of the motor train unit with the same model and different train numbers by the cooperation between the gas circuit control device 1 and the electric control device 2. The technical problem that in the prior art, the test equipment of the tested piece 3 cannot meet the performance test of the tested piece 3 of multiple types of motor train units or different vehicles of the motor train unit with the same type at the same time is solved.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
A performance test device of a brake control unit comprises an air path control device 1 and an electric control device 2. The electrical control device 2 and the air passage control device 1 are used in cooperation. The tested piece 3 is a brake control unit and is hoisted on the air path control device 1 through the hoisting device 4. The structure of the hoisting device 4 can be changed according to the size of the tested piece 3, so that the tested piece 3 of different motor train units can be compatible. After the tested piece 3 is installed, the gas circuit control device 1 and the electric control device 2 are respectively connected with the tested piece 3 through a gas circuit pipeline and a cable.
With particular reference to fig. 1, the air path control device 1 includes a plurality of air lines, and the diameters of the air lines are different; the air pipelines are all provided with electromagnetic valves, and the pressure in the air pipelines can be adjusted through the electromagnetic valves; the air path control device 1 is connected with the tested piece 3 through the air pipeline; the electric control device 2 comprises a control module 210, an information acquisition module and a network communication module; the control module 210, the information acquisition module and the tested piece 3 are connected through the network communication module.
With reference to fig. 1, the air passage control device 1 is mainly provided with an air passage for testing, a dummy brake cylinder 106, a proportional solenoid valve 101, a dummy train pipe reservoir 105, a brake reservoir 104, an on-off solenoid valve 102, a shutoff cock 103, and the like. And the gas path control device 1 comprises an air inlet passage and an air outlet passage which are communicated with each other. The air inlet passage comprises a first air inlet passage, a second air inlet passage and a third air inlet passage, and each air inlet passage is communicated with the tested piece 3; the air outlet passage comprises a first air outlet passage and a second air outlet passage, and each air outlet passage is communicated with the tested piece 3. Specifically, a filter 109 is arranged at an air inlet in the air path control device 1, impurities in a workshop air source are filtered through the filter 109 to ensure that the air for the test is dry and clean, and the filtered air flows into the first air inlet passage, the second air inlet passage and the third air inlet passage respectively.
More specifically, the first intake passage includes a proportional solenoid valve 101, an on-off solenoid valve 102, and a shutoff cock 103 connected in this order, and is connected to the T port of the test piece 3 through the shutoff cock 103; the second air inlet passage comprises a braking air storage cylinder 104, a proportional solenoid valve 101, a switch solenoid valve 102 and a cut-off cock 103 which are connected in sequence, and is connected with the MR opening of the tested piece 3 through the cut-off cock 103; the third air inlet passage comprises a proportional solenoid valve 101, a simulated train pipe air cylinder 105, an on-off solenoid valve 102 and a cut-off cock 103 which are connected in sequence, wherein the cut-off cock 103 is connected with the M port of the tested piece 3.
Further, the first air outlet passage is connected with a simulation brake cylinder 106, and the simulation brake cylinder 106 is connected with a brake cylinder output port C of the tested piece 3; and a switch electromagnetic valve 102 and a stop cock 103 are arranged between the simulated brake cylinder 106 and the brake cylinder output port C of the tested piece 3 and are used for testing the brake cylinder pressure output by the brake control unit. The second air outlet passage is connected with an output interface M of the tested piece 3, and a switch electromagnetic valve 102 and a cut-off cock 103 are sequentially arranged between the second air outlet passage and the output interface M of the tested piece 3; the testing device is used for testing the output pressure of the brake control unit during the output sanding and parking brake functions.
Further, the gas circuit control device 1 further includes a speed signal generating device 110, which includes a servo driver 111, a servo motor 112, a speed measuring gear 113, and a speed sensor 114. The servo driver 111 is electrically connected with the electric control device 2, the servo motor 112 is electrically connected with the servo driver 111, and the speed measuring gear 113 is connected with the power output end of the servo motor 112. The speed sensor 114 is disposed at one side of the speed measuring gear 113, and the speed sensor 114 is electrically connected to the tested object 3, that is, the speed sensor 114 is connected to the speed signal input interface 33. In this embodiment, 4 sets of speed signal generating devices 110 are provided, so that eight speeds can be simulated simultaneously to meet the debugging requirements of a single vehicle.
In summary, in order to meet the air path interface requirements and the air pressure requirements of the test piece 3 tests of the motor train units with different models, a plurality of air path passages with different diameters are arranged, and the air path control device 1 is provided with a plurality of passages of the above 5 types. Therefore, the number and the type of the air passage interfaces of the tested piece 3 can be selected. Meanwhile, each air inlet passage and each air outlet passage are provided with a test interface 107 and a pressure sensor 108, so that pressure test and real-time detection are realized. Each passage is also provided with a cut-off cock 103, so that the gas circuit can be cut off and shut off when an accident happens in the test process, and the use safety is improved. The pressure sensor 108, the test interface 107 and the cut-off cock 103 on each air path are collectively mounted on the back of the air path control device 1, so that manual testing is facilitated.
The electrical control device 2 comprises a control module 210, an information acquisition module and a network communication module, the control module 210, the information acquisition module and the network communication module are used for simulating the real vehicle environment of the tested piece 3 of the motor train unit, providing an isolation plug signal, a brake command line signal, an electric brake signal, an axle speed signal, a network signal and the like required by the normal work of the tested piece 3 of the single motor train unit, acquiring a speed grade signal, an air compressor control signal, a sanding control signal, an anti-skid control signal and the like which are externally output by the tested piece 3 of the motor train unit, and being compatible with the electrical interface test and the performance test of the tested piece 3 of the motor train unit with different models and the tested piece 3 of the motor train unit with the same model and different vehicle numbers.
The electrical control device 2 is provided with an upper computer 6, and the upper computer 6 is electrically connected with the control module 210.
Specifically, as shown in fig. 2 and fig. 3, the information acquisition module includes an analog quantity acquisition unit, and the analog quantity acquisition unit includes an analog quantity output board card 220 and an analog quantity input board card 229. The analog quantity output board card 220 is respectively and electrically connected with the speed signal generating device 110 and the tested piece 3, and meanwhile, the speed signal generating device 110 is electrically connected with the tested piece 30; the analog input board 229 is electrically connected to the test object 3. The analog output board 220 and the analog input board 229 are electrically connected to the control module 210.
Further, an analog output isolation board 221 and an analog output conditioning board 223 are electrically connected between the analog output board 220 and the speed signal generating device 110 and the tested piece 3, that is, the analog output board 220 is electrically connected with the analog output isolation board 221, the analog output isolation board 221 is electrically connected with the analog output conditioning board 223, and the analog output conditioning board 223 is electrically connected with the speed signal generating device 110 and the tested piece 3 respectively.
More specifically, when the speed simulation function needs to be realized, the analog output conditioning board 223 is electrically connected with the servo driver 111, and then is electrically connected with the speed signal input interface 33 in the tested piece 3 through the speed sensor 114; when the analog quantity control function needs to be realized, the analog quantity output conditioning board 223 is electrically connected with the analog quantity signal input interface 31 of the tested piece 3.
Meanwhile, an analog input isolation board 222 and an analog input conditioning board 224 are electrically connected between the analog input board 229 and the tested piece 3, and the analog input conditioning board 224 is connected with the analog signal output interface 32 of the tested piece 3. In conclusion, the speed simulation function and the analog quantity control function can be tested through the acquisition unit.
As shown in fig. 5, the speed simulation function may simultaneously simulate bicycle 1-4 axle speed signals. The control module 210 receives a speed set value sent by the upper computer 6 in real time, calculates an analog quantity set value according to a preset formula, sends the set value through the analog quantity output board card 220, and modulates the set value into a voltage or current analog quantity signal which can be identified by the servo driver 111 by using the analog quantity output conditioning board card 223 after the isolation processing of the analog quantity output isolation board card 221. The servo driver 111 controls the servo motor 112 to rotate according to a set value, and drives the speed measuring gear 113 to rotate. The speed measuring gear 113 cooperates with the speed sensor 114 to generate a speed pulse signal, and the speed pulse signal is sent to the speed signal input interface 33 of the tested piece 3. In this embodiment, the speed sensor 114 is preferably a dual channel speed sensor 114. Therefore, the simulation of the speed environment is realized through the structure and the connection mode.
The analog quantity control function can simulate analog quantity signals such as electric braking, transverse acceleration and the like through the analog quantity output board card 220, and after signal isolation, conditioning and conversion processing, the analog quantity signals are changed into signal types and signal amplitudes which can be identified by the tested piece 3 and are sent to the analog quantity control function of the tested piece 3. Specifically, the analog quantity control function mainly receives the analog quantity output signal state of the upper computer 6 in real time through the control module 210, outputs the analog quantity output signal state through the analog quantity output board card 220, is isolated by the analog quantity output isolation board card 221, is modulated into a signal type which can be identified by the test piece 3 through the analog quantity output conditioning board card 223, and sends the signal type to the signal conversion device 115. The analog output signal is corresponding to the analog signal input interface of the tested piece 3 of the specific vehicle type and the vehicle number through the signal conversion device 115. The analog quantity signal output interface of the tested piece 3 of the specific vehicle type and vehicle number corresponds to the input of the analog quantity input conditioning board 224 through the signal conversion device 115, is modulated into an analog quantity signal type which can be collected, is isolated by the analog quantity input isolation board 222, is sent to a corresponding channel of the analog quantity input board 229 to be collected, and is sent to the upper computer 6 through the control module 210 to be displayed, so that the analog quantity control function is realized.
Further, with reference to fig. 5, the acquisition module further includes a switching value acquisition unit, the switching value acquisition unit includes a switching value output board card 225 and a switching value input board card 226, the switching value output board card 225 is electrically connected to the tested piece 3, a switching value output isolation board card 227 is further disposed between the switching value output board card 225 and the tested piece 3, and the switching value output isolation board card 227 is connected to the switching value signal input interface 34 of the tested piece 3; the switching value input board card 226 is electrically connected with the tested piece 3; a switching value input isolation board card 228 is further arranged between the switching value input board card 226 and the tested piece 3, and the switching value input isolation board card 228 is connected with the switching value signal output interface 35 of the tested piece 3; the switching value output board 225 and the switching value input board 226 are electrically connected to the control module 210. The switching value control function can be tested through the acquisition unit.
Specifically, the switching value control function module can simulate switching value signals such as an isolation cock and a brake command line through the switching value output board 225, send the switching value signals to the tested piece 3 after signal isolation and conversion processing, and send the switching value signals to the switching value input board 226 after signal conversion and isolation processing, wherein the switching value signals are controlled by the air compressor of the tested piece 3, subjected to sand scattering control and the like. More specifically, the switching value control function mainly receives the switching value output signal state of the upper computer 6 in real time through the control module 210, outputs the switching value output signal state through the switching value output board 225, and sends the switching value output signal state to the signal conversion device 115 after being isolated by the switching value output isolation board 227. The switching value output signal is corresponding to the switching value signal input interface of the tested piece 3 of the specific vehicle type and the vehicle number through the signal conversion device 115. The on-off signal output interface of the tested piece 3 of the specific vehicle type and the vehicle number corresponds to the input of the on-off input isolation board card 228 through the signal conversion device 115, is isolated and then sent to the corresponding channel of the on-off input board card 226 for collection, and is sent to the upper computer 6 through the control module 210 for display. The signal conversion device 115 for signal conversion in the switching value control function and the analog value control function can realize that different vehicle types share one set of input/output board card, input/output isolation board card and input/output signal conditioning board card according to the corresponding relation between the output signal of the vehicle type self-defined function module and the input signal of the tested piece 3 and the corresponding relation between the input signal of the function module and the output signal of the tested piece 3.
Further, the analog output board card 220 is electrically connected with the proportional solenoid valve 101; an analog output isolation board card 221 and an analog output conditioning board card 223 are electrically connected between the analog output board card 220 and the proportional solenoid valve 101; a pressure output port of the proportional solenoid valve 101 is connected with a pressure sensor 108, and the pressure sensor 108 sends the acquired pressure to an analog input board card 229 through an analog input conditioning board card 224 and an analog input isolation board card 222; the switching value output board card 225 is electrically connected with the switching solenoid valve 102; and a switching value output isolation plate is electrically connected between the switching value output board 225 and the switching solenoid valve 102.
The pressure regulation function is mainly to receive the state of the command signal of the on-off solenoid valve 102 of the upper computer 6 in real time through the control module 210, output through the switching value output board 225, and control the on-off solenoid valve 102 of the gas circuit control device 1 to be opened or closed after being isolated by the switching value output isolation board 227, so as to select a corresponding ventilation circuit in the test process. Meanwhile, the control module 210 also receives a pressure setting signal of the upper computer 6 in real time, converts the pressure setting signal into an analog quantity signal setting value, outputs the analog quantity signal setting value through the analog quantity output board 220, performs isolation processing through the analog quantity output isolation board 221, modulates the analog quantity signal setting value into a control signal of the proportional solenoid valve 101 through the analog quantity output conditioning board 223, controls the output port pressure of the proportional solenoid valve 101 of the gas circuit control device 1, acquires the output port pressure through the pressure sensor 108 of the gas circuit control device 1, transmits data to the analog quantity input conditioning board 224, modulates the data into an analog quantity signal type which can be acquired, performs isolation processing through the analog quantity input isolation board 222, and transmits the data to a corresponding passage of the analog quantity input board 229 for acquisition. After the control module 210 collects the actual pressure, it compares the actual pressure with the received pressure set value to form a pressure closed-loop control, so as to ensure the accuracy of the output pressure.
For a clearer explanation of the pressure regulation function, the following further description is given of the working principle:
as shown in fig. 1 to 5, a plurality of air passage channels with different diameters are arranged for meeting the air passage interface requirements and the air pressure requirements of the test piece 3 tests of the motor train units with different models. The gas path control device 1 is provided with 5 passages, and each passage on the gas path control device 1 is connected with a corresponding interface of the tested piece 3 before the test. First, the total wind enters the test stand preset air line through filter 109:
when the air flows into the first air inlet passage, the analog quantity output board 220 outputs a pressure setting signal (different pressure setting signals are output according to air spring loads of different vehicles), the output port pressure of the proportional solenoid valve 101 is controlled, the switching quantity output board 225 outputs an on-off instruction of the switch solenoid valve 102, the on-off of the switch solenoid valve 102 is controlled, air is filled into or exhausted from the tested piece 3 through a T port (namely an air spring interface T) of the tested piece 3, the outlet pressure of the passage is collected by the pressure sensor 108 on the pipeline and fed back to the analog quantity input board 229, and after the actual pressure is collected by the control module 210, the pressure is compared with the pressure setting value to form pressure closed-loop control, so that the accuracy of the output pressure is ensured.
When the air flows into the second air inlet passage, the pressure air enters the brake air storage cylinder 104, the analog quantity output board card 220 outputs a pressure setting signal (corresponding pressure setting signal is output according to the total air pressure range of different vehicles), the output port pressure of the proportional solenoid valve 101 is controlled, the switching quantity output board card 225 outputs an on-off instruction of the switching solenoid valve 102 to control the on-off of the switching solenoid valve 102, further, the tested piece 3 is charged with air or discharged air through an MR port (total air input interface MR) of the tested piece 3, the outlet pressure of the passage is collected by the pressure sensor 108 on the pipeline and fed back to the analog quantity input board card 229, after the actual pressure is collected by the control module 210, the pressure is compared with the pressure setting value to form pressure closed-loop control, and in order to ensure the air flow for the test, the passage adopts a large-diameter pipeline.
When the pressure flows into the third air inlet passage, the analog quantity output board 220 outputs a pressure setting signal (corresponding pressure setting signal is output according to the pressure of the train pipe of the train), the output port pressure of the proportional solenoid valve 101 is controlled and stored in the analog train pipe air cylinder 105, the switching quantity output board 225 outputs an on-off instruction of the switching solenoid valve 102 to control the on-off of the switching solenoid valve 102, further air is filled into or exhausted from the tested piece 3 through a train pipe interface BP, the outlet pressure of the passage is collected by a pressure sensor 108 on the pipeline and fed back to the analog quantity input board 229, the control module 210 compares the actual pressure with a pressure setting value to form pressure closed-loop control, in addition, the switching solenoid valve 102 is independently arranged on the analog train pipe air cylinder 105, and the pressure reducing on-off working condition of the train pipe is simulated by controlling the switching solenoid valve 102.
The output pressure of the tested piece 3 enters a preset pipeline through a tested piece 3 brake cylinder interface C, the switching value output board card 225 outputs a switching instruction of the switching electromagnetic valve 102 to control the switching of the switching electromagnetic valve 102, the pressure is output to the analog brake cylinder 106, the pressure sensor 108 on the pipeline collects the pressure of the pipeline and feeds the pressure back to the analog value input board card 229, and the control module 210 compares the collected actual pressure with the output pressure value required by the test outline to check whether the function of the tested piece 3 is normal or not;
and the second air outlet passage is used for allowing the output pressure of the tested piece 3 to enter a preset pipeline through the output interface M, the pressure sensor 108 on the pipeline collects the pressure of the passage and feeds the pressure back to the analog input board card 229, the control module 210 compares the pressure with the output pressure value required by the test outline after collecting the actual pressure to check whether the function of the tested piece 3 is normal, the switching value output board card 225 outputs an on-off instruction of the switching electromagnetic valve 102 after the test is finished, the on-off of the switching electromagnetic valve 102 is controlled to discharge the pressure air in the pipeline, and therefore the pressure regulation and the test are finished through the structure.
The network communication module is arranged on the electric control device 2 and can test the network communication function of the tested piece 3 of the motor train unit. Specifically, the network communication module mainly comprises an MVB board card 250, an ethernet board card 260 and a CAN board card 270, and the MVB board card 250, the ethernet board card 260 and the CAN board card 270 are all electrically connected with the tested piece 3. Meanwhile, the network communication module is provided with a reserved network interface 280. Each communication network is connected to the network communication interface 36 of the tested piece 3 through a dedicated communication cable. Meanwhile, the ethernet router 12 is configured on the electrical control device 2, and one ethernet test interface 107 corresponds to multiple tested pieces 3, so that the number of the ethernet test interfaces 107 is simplified. Each network connection can test whether the network communication function of the tested piece 3 is normal, and the internal signal belonging to the tested piece 3 or the test result judged by the inside of the tested piece 3 can be sent to the control module 210 through one of the networks for processing, displaying and recording.
Further, as shown in fig. 1, a total wind pressure gauge 8 and a brake cylinder pressure gauge 11 are further provided on the front of the electric control apparatus 2, thereby facilitating an operator to observe pressure changes in real time. Meanwhile, an emergency stop button 7 is arranged for powering off the device in emergency; and a power indicator lamp 9 and an equipment fault lamp 10 are used for indicating the current working state of the device.
Meanwhile, the electrical control apparatus 2 is further provided with a disconnecting protector row 241, a terminal row 242, an air switch row 243, and a relay row 240. The open-circuit protector row 241 is used for protecting the device from being influenced during short circuit; the terminal row 242 is convenient for distributing and collecting the same signals; air switch bank 243 is the assembly of system air switches; relay bank 240 is configured to receive commands to control the associated solenoid.
For a clearer explanation of the present application, the working principle of the present invention will be further explained by taking the embodiments shown in fig. 1 to 5 as examples:
after entering the main interface of the upper computer 6 through the control module 210, firstly, the model number and the vehicle number of the motor train unit to be tested are selected, and then, a manual test mode or an automatic test mode is selected.
After selecting the manual test mode, the user can respectively give and output 1-4 shaft speeds through the speed simulation function module, provide speed signals for the test of the tested piece 3 and check whether the speed function of the tested piece 3 is normal; switching value signals such as an isolation cock, a brake train line and the like are output through the switching value control function module to provide instructions for the action of the tested piece 3, whether the switching value input function of the tested piece 3 is normal is checked, and meanwhile, switching value instruction signals such as sanding, air compressor control and the like fed back by the tested piece 3 can be collected through the switching value control function module to check whether the switching value output function of the tested piece 3 is normal; analog quantity signals such as electric braking and transverse acceleration can be output through the analog quantity control function module to provide instructions for the action of the tested piece 3, whether the analog quantity input function of the tested piece 3 is normal is checked, and meanwhile, the analog quantity instruction signals fed back by the tested piece 3 can be collected through the analog quantity control function module to check whether the analog quantity output function of the tested piece 3 is normal; controlling a switching electromagnetic valve 102 of the gas path control device 1 to select a conducting gas path, regulating outlet pressure through a proportional electromagnetic valve 101 and a pressure sensor 108, providing total wind pressure, air spring pressure and the like for a test of a tested piece 3, and simultaneously carrying out related tests of gas path components in the tested piece 3 to check whether the functions of the gas path components are normal or not; the network communication function module sends the network signal in the format and receives the network signal fed back by the tested piece 3, so that whether the receiving and sending functions of the network module of the tested piece 3 are normal can be checked, and other test results sent by the tested piece 3 can be received.
After the automatic test mode is selected, the upper computer 6 can automatically complete the control of the test flow, the configuration of test parameters and the display, judgment and storage of various test results through the coordination speed simulation function, the switching value control function, the simulation value control function, the pressure regulation function and the network communication function according to the selected test item without manually controlling the test steps and only according to the test rule agreed in advance, and a test report can be printed through the printer 5 after the test is completed. In the automatic test mode, the test can be suspended, continued, saved, introduced and stopped. In the process of the test process, if the test process needs to be temporarily stopped, the test can be selected to be suspended, and the test can be continued by canceling the suspension at any time. When the test is not finished and the whole test process needs to be quitted, the test progress can be selectively stored, and when the test is carried out again, the test progress can be directly led in, so that the repeated test is avoided. When a large fault or error occurs in the test process, the test can be directly stopped, and then the manual test mode is switched to search the fault or error reason.
To sum up, through the cooperation of the gas circuit control device 1 and the electric control device 2, the test equipment can complete various test items of the tested piece 3. Under the manual test mode, the speed simulation function, the switching value control function, the analog value control function and the pressure regulation function can be utilized to realize one-way output and one-way collection, the network communication function is utilized to send a self-defined signal, and a feedback signal of the tested piece 3 is received. And under the automatic test mode, the specific vehicle type and the vehicle number are selected by reading the configuration file, and the automatic test process is determined. According to the configuration file, the test steps are controlled, a test instruction is sent to the tested piece 3, corresponding actions are completed after the tested piece 3 receives the test instruction, and the test equipment can directly acquire a test result by using a switching value acquisition unit or an analog value acquisition unit. And (3) after the test is finished, sending the test result judged in the tested piece 3 to the performance test equipment of the brake control unit through the network communication module.
Claims (9)
1. A performance testing apparatus of a brake control unit, comprising:
the air channel control device comprises a plurality of air pipelines, and the diameters of the air pipelines are different; and the air pipeline comprises an inlet passage and an outlet passage which are communicated with each other:
the intake passage includes a passage for the intake air,
the first air inlet passage comprises a proportional electromagnetic valve, a switch electromagnetic valve and a cut-off cock which are sequentially connected, wherein the cut-off cock is connected with a T port of a tested piece; and each air inlet passage is communicated with the tested piece;
the second air inlet passage comprises a braking air storage cylinder, a proportional electromagnetic valve, a switch electromagnetic valve and a cut-off cock which are sequentially connected, and the cut-off cock is connected with an MR opening of a tested piece;
the third air inlet passage comprises a proportional electromagnetic valve, a simulated train pipe air cylinder, a switch electromagnetic valve and a cut-off cock which are sequentially connected, wherein the cut-off cock is connected with a BP port of a tested piece;
the air outlet passage comprises a first air outlet passage and a second air outlet passage, and each air outlet passage is communicated with the tested piece;
the electric control device comprises a control module, an information acquisition module and a network communication module; the control module, the information acquisition module, the network communication module and the tested piece are electrically connected.
2. The performance test apparatus of a brake control unit according to claim 1,
the first air outlet passage is connected with a simulation brake cylinder, and the simulation brake cylinder is connected with a brake cylinder output port C of the tested piece; a switch electromagnetic valve and a cut-off cock are arranged between the simulation brake cylinder and a brake cylinder output port C of the tested piece and used for testing the brake cylinder pressure output by the brake control unit;
the second air outlet passage is connected with an output interface M of the tested piece, and a switch electromagnetic valve and a cut-off cock are sequentially arranged between the second air outlet passage and the output interface M of the tested piece; the testing device is used for testing the output pressure of the brake control unit during sanding and parking brake functions.
3. The performance test apparatus of a brake control unit according to claim 1,
each air inlet passage and each air outlet passage are provided with a test interface, so that the pressure test is realized;
and pressure sensors are arranged on each air inlet passage and each air outlet passage, so that the pressure is monitored in real time.
4. The performance test apparatus of a brake control unit according to claim 3, wherein a speed signal generating device is disposed on the air passage control device, the speed signal generating device including:
a servo driver electrically connected to the electrical control device;
the servo motor is electrically connected with the servo driver;
the speed measuring gear is connected with the power output end of the servo motor;
and the speed sensor is arranged on one side of the speed measuring gear and is electrically connected with the tested piece.
5. The performance test apparatus of a brake control unit according to claim 4, wherein the information acquisition module includes an analog quantity acquisition unit including:
the analog quantity output board card is respectively and electrically connected with the speed signal generating device and the tested piece, and the speed signal generating device is electrically connected with the tested piece;
the analog quantity input board card is electrically connected with the tested piece;
the analog quantity output board card and the analog quantity input board card are electrically connected with the control module.
6. The performance test apparatus of a brake control unit according to claim 5,
an analog output isolation board card and an analog output conditioning board card are electrically connected between the analog output board card and the speed signal generating device as well as between the analog output board card and the tested piece;
an analog input isolation board card and an analog input conditioning board card are electrically connected between the analog input board card and the tested piece.
7. The performance test apparatus of a brake control unit according to claim 6, wherein the information acquisition module includes a switching amount acquisition unit including:
the switching value output board card is electrically connected with the tested piece, and a switching value output isolation board card is arranged between the switching value output board card and the tested piece;
the switching value input board card is electrically connected with the tested piece; a switching value input isolation board card is arranged between the switching value input board card and the tested piece;
the switching value output board card and the switching value input board card are electrically connected with the control module.
8. The performance test apparatus of a brake control unit according to claim 7,
the analog quantity output board card is electrically connected with the proportional solenoid valve;
the analog output isolation board card and the analog output conditioning board card are electrically connected between the analog output board card and the proportional solenoid valve;
a pressure output port of the proportional solenoid valve is connected with the pressure sensor, and the pressure sensor sends the acquired pressure to the analog input board card through the analog input conditioning board card and the analog input isolating board card;
the switching value output board card is electrically connected with the switching electromagnetic valve; and the switching value output isolating plate is electrically connected between the switching value output board card and the switching electromagnetic valve.
9. The performance test equipment of the brake control unit according to claim 1, wherein the network communication module comprises an MVB board card, an Ethernet board card and a CAN board card, and the MVB board card, the Ethernet board card and the CAN board card are electrically connected to the tested piece.
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| CN111949011B true CN111949011B (en) | 2022-02-11 |
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| CN112859803A (en) * | 2021-01-04 | 2021-05-28 | 中车青岛四方车辆研究所有限公司 | Detection equipment and health state evaluation method for bicycle brake control device |
| CN113359683B (en) * | 2021-07-01 | 2022-12-06 | 中车制动系统有限公司 | Test system and test method for vehicle control brake control system of urban rail vehicle |
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Address after: No. 231, Ruichang Road, North District, Qingdao, Shandong Patentee after: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. Country or region after: China Patentee after: CRRC Brake System Co.,Ltd. Address before: No. 231, Ruichang Road, North District, Qingdao, Shandong Patentee before: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. Country or region before: China Patentee before: QINGDAO SRI TECHNOLOGY Co.,Ltd. |