CN109443808B - Vehicle brake intelligent test system interface device - Google Patents
Vehicle brake intelligent test system interface device Download PDFInfo
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- CN109443808B CN109443808B CN201811159645.4A CN201811159645A CN109443808B CN 109443808 B CN109443808 B CN 109443808B CN 201811159645 A CN201811159645 A CN 201811159645A CN 109443808 B CN109443808 B CN 109443808B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Electric Propulsion And Braking For Vehicles (AREA)
- Regulating Braking Force (AREA)
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Abstract
The invention relates to an interface device of an intelligent test system for vehicle braking, which is used for a train air braking test system and comprises a braking electronic simulation system (1), a braking control simulation system (2), a brake test system (3) and a sensor system (4), wherein the braking electronic simulation system (1) sends a braking or relieving signal to the braking control simulation system (2), then the braking control simulation system (2) controls the brake test system (3) to brake or relieve a train, and the sensor system (4) is used for acquiring braking or relieving process test data on the brake test system (3) and feeding the test data back to the braking electronic simulation system (1) for data processing and analysis. Compared with the prior art, the method has the advantages of high efficiency, strong adaptability, simple structure, multiple measurement points, complete data, wide application range and the like.
Description
Technical Field
The invention relates to the field of train air brake test systems, in particular to an interface device of a vehicle brake intelligent test system.
Background
The number and the variety of the railway locomotive brake machines are various, the existing train brake test system is difficult to adapt to the brake tests of different types, the requirements on the braking of the train are higher and higher along with the heavy load and the speed increasing requirements of the train and the development of a long marshalling train, and the performance test evaluation of the brake system needs to be enhanced; the brake models of the novel freight trains at home and abroad are more and more, and novel test equipment needs to be continuously reconstructed and built. The train braking test has the outstanding characteristics of large number of brakes, various test points and data, long time period for reconstructing the existing test equipment and building new equipment, and huge investment, and is difficult to meet the requirements of train braking performance test and safety and reliability evaluation.
Therefore, a test system with strong adaptability is urgently needed, an intelligent vehicle brake test system interface device which can be widely suitable for train brake system performance tests of different standards, different types and different levels is developed by utilizing an intelligent technology, a brake test is carried out by combining a physical brake test system, influence factors related to the train brake system performance, including influence effects of components and technical data on various technical indexes of train brake, are evaluated, and the intelligent vehicle brake test system has wide adaptability.
The test system with strong adaptability mainly comprises: 1) establishing a set of digital brake simulation models which simulate the brake process and performance and are suitable for various types of brakes in a computer, establishing a brake measurement and control system, a data processing system and a human-computer interface, and establishing a vehicle brake intelligent test system through a hardware interface which is connected with a physical brake test system through a brake electronic simulation system; 2) a novel electronic brake simulation system is formed by a brake control simulation device for simulating train brake control, performance data acquisition, statistical analysis and digital brake simulation model correction of a few connected vehicle physical brake machines in the brake process. The train brake test system with more varieties and more quantity and capable of processing data and simulating new working conditions is formed by connecting the interface device of the intelligent test system for vehicle brake with a small quantity of real object brakes.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an interface device of an intelligent vehicle brake test system.
The purpose of the invention can be realized by the following technical scheme:
an interface device of an intelligent test system for vehicle braking is used for an air brake test system of a train and comprises a brake electronic simulation system, a brake control simulation system, a brake test system and a sensor system, wherein the brake electronic simulation system sends a brake or release signal to the brake control simulation system, then the brake control simulation system controls the brake test system to brake or release the train, the sensor system is used for acquiring brake or release process test data on the brake test system, feeding the test data back to the brake electronic simulation system for data processing and analysis, and sending a corrected brake or release signal to the brake control simulation system according to a result obtained by processing and analysis so as to realize feedback control circulation. The four systems are connected to form a train braking test system which can be widely suitable for different brake performance test requirements and simulate new working conditions, and the performance evaluation and technical analysis test of the train air braking system are realized. The electronic simulation system receives basic instructions related to a brake test to be executed, and accurately controls the air pressure of a train brake pipeline to realize inflation relieving and braking effects through data calculation of a brake simulation model and execution of a control strategy in an intelligent control program.
The brake test system comprises an auxiliary air cylinder, a brake air cylinder, a working air cylinder, an air distribution valve and a dust collector, wherein the auxiliary air cylinder, the brake air cylinder and the working air cylinder are all connected to the air distribution valve through brake air path pipelines, compressed air used for simulating brake signals and power firstly flows to the air distribution valve after being dedusted by the dust collector, the air distribution valve conveys the compressed air to the auxiliary air cylinder, the brake air cylinder and the working air cylinder according to preset pressure, and the specific braking or relieving of the train is realized through the matching of the auxiliary air cylinder, the brake air cylinder and the working air cylinder.
Furthermore, the sensor system comprises a pressure sensor and a flow sensor, the pressure sensor is arranged at the joint of a brake gas path pipeline in the brake test system, an auxiliary air cylinder, a brake air cylinder and a working air cylinder, the flow sensor is arranged on an output pipeline of the brake control simulation system, and the pressure sensor is also arranged at the position of an input starting end of a balance air cylinder and an input starting end of a brake test system pipeline.
Furthermore, the braking electronic simulation system comprises a data processing center, a braking microcomputer control unit and a data acquisition unit, wherein the data acquisition unit is used for acquiring data obtained by the pressure sensor and the flow sensor, the data acquisition unit transmits the acquired data to the data processing center, the processing center processes, analyzes and calculates the received data to obtain a target pressure value of the braking simulation model, and the braking microcomputer control unit receives a braking or relieving signal sent to the braking control simulation system after receiving the target pressure value of the braking simulation model from the data processing center.
Furthermore, the data processing center is composed of a plurality of server-level CPUs, the data acquisition unit is used for converting analog input quantity into digital quantity required by a microcomputer system so as to interface with the CPUs, and the brake microcomputer control unit is based on an intelligent pulse width modulation brake microcomputer control unit.
The brake control simulation device comprises an inflation pipeline, an electromagnetic valve, a balance air cylinder, a relay valve, an air storage cylinder and an air source, compressed air generated by the air source firstly flows through the air storage cylinder to be subjected to pressure stabilization and pressure storage, then flows to the relay valve and the balance air cylinder respectively, a microcomputer control unit sends a brake or release signal to the electromagnetic valve, the electromagnetic valve is controlled to be switched on and off by the electric signal, the switching-on and switching-off of the electromagnetic valve controls the compressed air flowing to the balance air cylinder through the electromagnetic valve, so that the internal pressure of the balance air cylinder is changed, the compressed air in the balance air cylinder flows to the relay valve and forms pneumatic control on the relay valve, the relay valve is controlled to complete the charging and discharging of the compressed air to the brake test system, and power is provided for the braking or the release of the brake test system.
In terms of the model of the interface device of the whole test system, the core model system is a train brake control model which is built according to the brake device repeatability, the train pipeline fluid transfer rule and the fluid action principle of each train in the train brake system. The brake electronic simulation system is used for simulating brake air pressure signals of different marshalling trains and each position of the train to control the brake test system, so that real brake or release test data of the train at each position is obtained, the brake or release test data is collected and fed back to the brake electronic simulation system through the sensor system, and a brake simulation model is verified or corrected in real time.
Compared with the prior art, the invention has the following advantages:
1. the interface device of the vehicle brake intelligent test system comprises a software interface, namely a real control system is realized through a digital brake simulation software system, the vehicle brake performance tests of different positions of a train under different working conditions can be simulated, and conditions are created for realizing the combination of a virtual train brake simulation model and a real object brake.
2. The intelligent test system interface device for vehicle braking comprises a hardware interface, and can connect virtual and physical systems by establishing a combined relation of a braking electronic simulation system, a braking control simulation device and a brake test system to form a train braking test system with more varieties and more quantity, which can process data and simulate new working conditions, and perform performance evaluation and technical analysis test on the train braking system.
3. A digital brake simulation model in a brake electronic simulation system divides a train brake system into a train air pipeline system module which has a relatively stable structure and controls brake signals, a single-train brake machine with a complex internal structure and a function group reflecting the mutual relation. The brake electronic simulation system sends a brake signal after simulation operation, performs different forms and different levels of braking or relieving tests by controlling the brake control simulation device, can simulate the air pressure change of vehicle brake pipelines at different positions in a train brake system, tests the performance of brakes at different positions of different marshalling trains, and realizes information communication among brake components of the intelligent vehicle brake test system.
4. The brake test system receives a brake instruction sent by the brake control simulation device, performs a physical brake performance test, feeds back collected test data to the brake electronic simulation system through a data transmission channel, performs data analysis, corrects a digital brake simulation model, and adapts to the research of the novel brake performance test.
5. The interface device of the vehicle brake intelligent test system is provided with a plurality of sensors in an air pipeline system, so that the technical data of each functional module of the brake can be measured, the change of the brake pressure of the train at different stages can be analyzed, and the brake structure can be optimized and analyzed conveniently.
6. The interface device of the vehicle brake intelligent test system can realize the operation of a brake simulation model and the acquisition of a large amount of multi-point brake test data, control the brake control simulation device to be connected with a physical brake test system, change technical parameters in time and investigate and analyze the performance of the brake system.
Drawings
FIG. 1 is a block diagram of an interface device of an intelligent testing system for vehicle braking according to the present invention;
FIG. 2 is a schematic structural view of a brake test system according to the present invention;
FIG. 3 is a schematic structural diagram of a brake control simulation system according to the present invention;
FIG. 4 is a schematic structural diagram of a brake electronic simulation system according to the present invention;
FIG. 5 is a diagram of the composition and location of sensors for data acquisition in accordance with the present invention.
In the figure: 1. the system comprises a brake electronic simulation system, 2, a brake control simulation system, 3, a brake testing system, 4, a sensor system, 11, a data processing center, 12, a brake microcomputer control unit, 13, a data acquisition unit, 21, an inflation pipeline, 22, an electromagnetic valve, 23, an equalizing air cylinder, 24, a relay valve, 25, an air storage cylinder, 26, a wind source, 31, an auxiliary air cylinder, 32, a brake air cylinder, 33, a working air cylinder, 34, an air distribution valve, 35, a dust collector, 41, an equalizing air cylinder pressure sensor, 42, a train pipe pressure sensor, 43, a flow sensor, 44, a single-vehicle brake branch pipe pressure sensor, 45, an auxiliary air cylinder pressure sensor, 46, a brake cylinder pressure sensor 47 and a working air cylinder pressure sensor.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
The interface device of the vehicle brake intelligent test system is used for a train air brake test system, and comprises a brake electronic simulation system 1, a brake control simulation system 2, a brake test system 3 and a sensor system 4, wherein the brake electronic simulation system 1 comprises a data processing center 11, a brake microcomputer control unit 12 and a data acquisition unit 13, the data processing center 11 consists of a plurality of server-level CPUs, the data acquisition unit 13 is used for converting analog input quantity into digital quantity required by the microcomputer system so as to be interfaced with the CPUs, and the brake microcomputer control unit 12 is based on an intelligent pulse width modulation brake microcomputer control unit 12, and is characterized in that the brake microcomputer control unit 13 is a digital quantity required by the microcomputer system. The brake control simulation device 2 includes an air charging line 21, a solenoid valve 22, an equalizing reservoir 23, a relay valve 24, a reservoir 25, and a wind source 26, see fig. 3. The brake testing system 3 comprises an auxiliary air cylinder 31, a brake air cylinder 32, a working air cylinder 33, an air distribution valve 34 and a dust collector 35, wherein the auxiliary air cylinder 31, the brake air cylinder 32 and the working air cylinder 33 are all connected to the air distribution valve 34 through brake air path pipelines. The pressure sensors are arranged at the joints of the brake gas path pipelines in the brake testing system 3, the auxiliary reservoir 31, the brake reservoir 32 and the working reservoir 33, and the flow sensor 43 is arranged on the output pipeline of the brake control simulation system 2.
The specific operation process mainly comprises the following three steps:
firstly, the brake electronic simulation system 1 sends a brake or release signal to the brake control simulation system 2. The data acquisition unit 13 is configured to acquire data obtained by the pressure sensor and the flow sensor 43, and then the data acquisition unit 13 transmits the acquired data to the data processing center 11, referring to fig. 4, the processing center 11 processes, analyzes and calculates the received data to obtain a target pressure value of the brake simulation model, and the brake microcomputer control unit 12 receives a brake or release signal sent to the brake control simulation system 2 after receiving the target pressure value of the brake simulation model from the data processing center 11.
And secondly, controlling the brake testing system 3 by the brake control simulation device 2 to brake or release the train. The compressed air generated by the air source 26 firstly flows through the air storage cylinder 25 to perform pressure stabilization and pressure storage, and then flows to the relay valve 24 and the equalizing air cylinder 23 respectively, the microcomputer control unit 12 sends a braking or relieving signal to the electromagnetic valve 22 to control the on-off of the electromagnetic valve 22 according to the electric signal, referring to fig. 3, the on-off of the electromagnetic valve 22 controls the compressed air flowing to the equalizing air cylinder 23 through the electromagnetic valve 22, so that the internal pressure of the equalizing air cylinder 23 changes, the compressed air in the equalizing air cylinder 23 flows to the relay valve 24 to perform pneumatic control on the relay valve 24, and then the relay valve 24 is controlled to complete the charging and discharging of the compressed air to the brake test system 3, and power is provided for the braking or relieving of the brake test system 3. Compressed air for braking flows to the air distribution valve 34 after being dedusted by the dust collector 35, and the air distribution valve 34 delivers the compressed air to the auxiliary reservoir 31, the brake reservoir 32 and the working reservoir 33 according to a preset pressure, and the specific braking or relieving of the train is realized through the cooperation of the parts of the auxiliary reservoir 31, the brake reservoir 32 and the working reservoir 33, see fig. 2.
And thirdly, the sensor system 4 collects test data on the train brake pipeline. Referring to fig. 5, the equalizing reservoir pressure sensor 41, the train pipe pressure sensor 42, the flow sensor 43, the single-vehicle brake branch pipe pressure sensor 44, the auxiliary reservoir pressure sensor 45, the brake cylinder pressure sensor 46 and the working reservoir pressure sensor 47 respectively collect pressure or flow information at corresponding positions and transmit the pressure or flow information to the sensor integrator 48, then the test data is fed back to the brake electronic simulation system 1 for data processing and analysis, and a corrected brake or release signal is sent to the brake control simulation system 2 according to a result obtained by the processing and analysis, so that a feedback control cycle is realized.
Claims (3)
1. An interface device of a vehicle brake intelligent test system is used for a train air brake test system and is characterized by comprising a brake electronic simulation system (1), a brake control simulation system (2), a brake test system (3) and a sensor system (4), wherein the brake electronic simulation system (1) sends a brake or release signal to the brake control simulation system (2), then the brake control simulation system (2) controls the brake test system (3) to brake or release a train, the sensor system (4) is used for collecting brake or release process test data on the brake test system (3), feeding the test data back to the brake electronic simulation system (1) for data processing and analysis, and sending a corrected brake or release signal to the brake control simulation system (2) according to the result obtained by processing and analysis, thereby implementing a feedback control loop;
the brake testing system (3) comprises an auxiliary air cylinder (31), a brake air cylinder (32), a working air cylinder (33), an air distribution valve (34) and a dust collector (35), wherein the auxiliary air cylinder (31), the brake air cylinder (32) and the working air cylinder (33) are connected to the air distribution valve (34) through brake air path pipelines, compressed air used for simulating brake signals and power firstly flows to the air distribution valve (34) after being dedusted by the dust collector (35), and the air distribution valve (34) conveys the compressed air to the auxiliary air cylinder (31), the brake air cylinder (32) and the working air cylinder (33) according to preset pressure;
the brake control simulation system (2) comprises an inflation pipeline (21), an electromagnetic valve (22), a balance air cylinder (23), a relay valve (24), an air storage cylinder (25) and an air source (26), compressed air generated by the air source (26) firstly flows through the air storage cylinder (25) to be subjected to pressure stabilization and pressure storage, and then flows to the relay valve (24) and the balance air cylinder (23) respectively, a brake or release signal sent to the electromagnetic valve (22) by the electronic simulation system (1) controls the on-off of the electromagnetic valve (22) according to the electric signal, the on-off of the electromagnetic valve (22) controls the compressed air flowing to the balance air cylinder (23) through the electromagnetic valve (22), so that the internal pressure of the balance air cylinder (23) changes, the compressed air in the balance air cylinder (23) flows to the relay valve (24) and forms pneumatic control on the relay valve (24), and then the relay valve (24) is controlled to complete the compressed air charging and discharging of the brake test system (3), providing power for braking or relieving of the brake test system (3);
the sensor system (4) comprises a pressure sensor and a flow sensor (43), the pressure sensor is arranged at the joint of a brake gas path pipeline in the brake testing system (3), the auxiliary air cylinder (31), the brake air cylinder (32) and the working air cylinder (33), and the flow sensor (43) is arranged on an output pipeline of the brake control simulation system (2);
the pressure sensor is also arranged at the input starting end position of the pipeline on the equalizing air cylinder (23) and the brake testing system (3).
2. The interface device of the vehicle brake intelligent test system according to claim 1, the brake electronic simulation system (1) comprises a data processing center (11), a brake microcomputer control unit (12) and a data acquisition unit (13), the brake simulation system comprises a data acquisition unit (13), a data processing center (11), a brake microcomputer control unit (12), a brake control simulation system (2) and a data processing center (11), wherein the data acquisition unit (13) is used for acquiring data acquired by a pressure sensor and a flow sensor (43), the data acquisition unit (13) transmits the acquired data to the data processing center (11), the data processing center (11) processes, analyzes and calculates the received data to obtain a target pressure value of a brake simulation model, and the brake microcomputer control unit (12) receives a brake or release signal sent by the brake control simulation system (2) after receiving the target pressure value of the brake simulation model from the data processing center (.
3. The vehicle brake intelligent test system interface device according to claim 2, wherein the data processing center (11) is composed of a plurality of server-level CPUs, the data acquisition unit (13) is used for converting analog input quantity into digital quantity required by a microcomputer system so as to interface with the CPUs, and the brake microcomputer control unit (12) is an intelligent pulse width modulation-based brake microcomputer control unit (12).
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| CN113110104B (en) * | 2021-04-25 | 2022-06-07 | 同济大学 | Intelligent cascade test system for braking of single marshalling train |
| CN114459781B (en) * | 2022-01-18 | 2023-05-02 | 同济大学 | Intelligent train dynamic braking test system and application thereof |
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| CN102323018A (en) * | 2011-08-19 | 2012-01-18 | 南车株洲电力机车有限公司 | Test bed for detecting comprehensive performance of air pipeline cabinet of locomotive braking system |
| CN102680254B (en) * | 2012-05-24 | 2014-04-02 | 西南交通大学 | Comprehensive testing platform of intelligent brake system |
| CN104020675B (en) * | 2014-05-05 | 2017-02-22 | 中车青岛四方机车车辆股份有限公司 | Train braking hardware-in-the-loop simulation testing stand and method |
| EP3196086A1 (en) * | 2016-01-21 | 2017-07-26 | KNORR-BREMSE Systeme für Schienenfahrzeuge GmbH | Apparatus and method for testing brake-running conditions |
| KR20170119205A (en) * | 2016-04-18 | 2017-10-26 | 한국철도공사 | Railway car test type automatic air pressure controlling method and apparatus |
| CN107036829B (en) * | 2016-09-28 | 2019-04-30 | 杭州中车车辆有限公司 | High-accuracy multifunctional railcar brake system test platform and its application method |
| CN108204900A (en) * | 2016-12-20 | 2018-06-26 | 本钢板材股份有限公司 | A kind of common vehicle braking ability test device |
| CN107101838A (en) * | 2017-03-27 | 2017-08-29 | 中车青岛四方机车车辆股份有限公司 | Retardation test system and retardation test method |
| CN107479402A (en) * | 2017-08-22 | 2017-12-15 | 中车青岛四方车辆研究所有限公司 | Electric braking simulation system, Simulation of Brake platform and electric braking analogy method |
| CN107490493A (en) * | 2017-09-07 | 2017-12-19 | 中车青岛四方车辆研究所有限公司 | Retardation test system, retardation test method and processor |
| CN107741333B (en) * | 2017-10-12 | 2019-08-27 | 中车青岛四方车辆研究所有限公司 | The pilot system and test method of frame control braking system |
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| 应用于列车制动性能分析的分配阀模拟软件的研究;应之丁 等;《齐齐哈尔大学学报》;20170930;第33卷(第5期);第23-27页 * |
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