CN102680253B - Method and system for testing brake of high-speed motor train unit - Google Patents
Method and system for testing brake of high-speed motor train unit Download PDFInfo
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- CN102680253B CN102680253B CN201110066273.2A CN201110066273A CN102680253B CN 102680253 B CN102680253 B CN 102680253B CN 201110066273 A CN201110066273 A CN 201110066273A CN 102680253 B CN102680253 B CN 102680253B
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Abstract
The invention relates to a method and a system for testing the brake of a high-speed motor train unit. The method comprises the following steps of: in a stationary state of a motor train unit, simulating various speed signals, train air spring load signals and regeneration brake analog signals by utilizing the testing system; after various analog signals are received by the motor train unit, applying a brake action by a train brake system, and outputting brake information; and acquiring and analyzing brake information data and judging whether the design requirements for various performance indexes of the brake system are met. According to the method and the system, in the stationary state of the motor train unit, various performance indexes of the motor train unit brake system can be comprehensively and effectively tested through simulating the train speed signals and the train air spring load signals, wherein the performance indexes comprise brake response time of the motor train unit, logic motions of an anti-slip system, regenerated brake feedback, air brake, sequential coordination control of regenerated brake, and the like, so that intensive study of complete train debugging key technologies of the motor train unit is realized so as to achieve the purpose of all-around high-precision analogue simulation of the test of the brake system.
Description
Technical field
The present invention relates to a kind of motor train unit performance test methods and system, particularly a kind of method of testing of Braking System for Multiple Units and test macro, belong to rail vehicle performance test technical field.
Background technology
Along with improving constantly of motor train unit travelling speed, whether safe and reliable Braking System for Multiple Units performance whether good, be related to motor train unit operation, so, to the performance test of Braking System for Multiple Units and system debug, just seem particularly important.
Rail vehicle only adopted vehicle steering order to confirm to brake system in the past, cannot verify the function of vehicle under dynamical state, cause verification experimental verification face little, with problems such as actual motion disconnections, cannot meet test and the system debug requirement of present EMU.
Summary of the invention
Fundamental purpose of the present invention is to address the above problem, and a kind of EMU braking method of testing that can realize Braking System for Multiple Units static test is provided.
Another fundamental purpose of the present invention is, a kind of brake test system for high-speed motor train unit that can realize Braking System for Multiple Units static test is provided.
For achieving the above object, technical scheme of the present invention is:
A kind of EMU braking method of testing, under motor train unit stationary state, utilize test macro to simulate various rate signals, the empty spring load signal of vehicle and regenerative braking simulating signal, motor train unit receives after each simulating signal, by motor vehicle braking system, apply braking maneuver, output braking information, and then pass through the collection of braking-distance figures and analysis, whether the property indices of measuring brake system meets design requirement, and specifically comprises:
Rate signal simulation, by industrial computer, by GPIB agreement control function generator, sent square wave or the sine wave of different frequency and amplitude, by relay, arranged and realized speed channels between different vehicle and switch again, each velocity simulate signal is passed to the repeater box that each tested compartment is corresponding the most at last;
The empty spring load signal simulation of vehicle, wind outside is introduced to test console by airduct, according to different vehicle load, by exporting the open amount of different voltage control signal control ratio valves, to control, export corresponding blast, and transfer to by the air outlet pipeline of laying in advance the repeater box that each vehicle is corresponding, by output switch voltage signal, control and to compartment, to fill wind or air draft again, by the pressure transducer of each repeater box, gather each car wind pressure signal;
The simulation of regenerative braking simulating signal, by switching value voltage source, carry out the setting of DC voltage, force vehicle regenerative braking under static state effective, by AVI voltage analog unit simulation on-vehicle traction converter feedback voltage value to vehicle-mounted brake control.
Further, the working condition that each vehicle test model is required is pre-stored in test macro, select to automatically switch to required simulated condition after vehicle.
Further, pre-stored in test macro have a standard database, the data in the test data of collection and standard database are compared, and then whether the data that judgement gathers meets design requirement.
Realize a test macro for said method, comprise test console and repeater box; Described test console comprises industrial computer, demonstration and operating unit, the load simulated unit of the empty spring of vehicle, velocity simulate unit, regenerative braking simulation and feedback unit and sampling and analysis of signal unit; Described repeater box for carrying out information acquisition and transmission between tested compartment and described test console, and the tested compartment of every joint is equipped with at least one repeater box;
The load simulated unit of the empty spring of described vehicle is by reservoir, analog quantity is controlled output board, analog signals collection plate, digital output, proportioning valve, 3 position-5 way solenoid valve and pressure transducer form, described proportioning valve is arranged on the air outlet pipeline of described reservoir, the repeater box in another each tested compartment of termination of described air outlet pipeline, described analog quantity is controlled the aperture of output board control ratio valve, institute's pressure transducer is for gathering the blast in each compartment, pressure transducer is connected with analog signals collection plate, analog signals collection plate carries out signal fusing, analog signals collection plate is connected with digital output partitioned signal, described digital output is controlled the switch of 3 position-5 way solenoid valve, described 3 position-5 way solenoid valve is arranged on described air outlet pipeline,
Described velocity simulate unit is comprised of signal controlling plate, function generator, relay row, described signal controlling plate sends square wave or the sine wave of different frequency and amplitude by GPIB agreement control function generator, by relay, arrange and realize speed channels between different vehicle and switch, each velocity simulate signal is passed to by signal wire the repeater box that each tested compartment is corresponding, realizes and communicating by letter with the signal imitation of vehicle;
Described regenerative braking simulation and feedback unit are comprised of switching value voltage source, AVI voltage analog device, analog signals collection plate, described switching value voltage source is for the setting of process of the test DC voltage, described AVI voltage analog device is used for simulating on-vehicle traction converter feedback voltage value to vehicle-mounted brake control, and described analog signals collection plate is for detection of the air-making power under regeneration effective status.
Further, described test console is a plurality of, between a plurality of test consoles by the Ethernet control that links.
Further, described sampling and analysis of signal unit is comprised of plurality of voltages sensor, pressure transducer, analog signals collection plate and standard database; Described pressure transducer converts electric current loop signal to for the air pressure signal that each car repeater box is received and is passed to test console, and described voltage sensor is for ratio step-down, and described analog acquisition plate is for data acquisition.
Content to sum up, a kind of EMU braking method of testing of the present invention and system, can realize motor train unit under static state, by simulating vehicle rate signal and the empty spring load signal of vehicle, complete the test of the properties indication of Braking System for Multiple Units comprehensively and effectively, comprising the motor train unit braking response time, antiskid system logical action, regenerative braking feedback, the timing coordination control of air damping and regenerative braking etc., the further investigation of realization to motor train unit car load debugging gordian technique, reach brake system test omnidirectional high-accuracy analogue simulation.
Accompanying drawing explanation
Fig. 1 testing table General Arrangement of the present invention;
Fig. 2 test platform structure schematic diagram of the present invention;
The A of Fig. 3 Fig. 2 is to view;
Fig. 4 repeater box structural representation of the present invention;
Fig. 5 process flow diagram of the present invention.
If Fig. 1 is to as shown in Fig. 5, test console 1, repeater box 2, tested compartment 3, industrial computer 4, display 5, guidance panel 6, function generator 7, junction box 8, AVI voltage analog device 9, Switching Power Supply 10, reservoir 11, proportioning valve 12, wire casing 13, cabinet 14, movable pulley 15, keyboard 16, terminal row 17, main circuit switch row 18, insert row 19, unit controls case 20, the load simulated unit 21 of the empty spring of vehicle, velocity simulate unit 22, sampling and analysis of signal unit 23, regenerative braking simulation and feedback unit 24, casing 25, electric function chamber 26, pipeline storage chamber 27, base 28, holder 29, 3 position-5 way solenoid valve 30, relay row 31, pressure transducer 32, vehicle limited slip valve 33, display supporting plate 34, display baffle plate 35, reservoir seat 36, proportioning valve supporting plate 37, daylight lamp 38, switching value voltage source 39.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
As shown in Figure 1, a kind of brake test system for high-speed motor train unit, comprises test console 1 and repeater box 2.Wherein, test console 1 is for simulating the empty spring load signal of various rate signals, various vehicle and regenerative braking simulating signal, and carries out collection and the analysis of braking-distance figures.Repeater box 2 is for carry out information acquisition and transmission between tested vehicle 3 and test console 1, and every joint tested vehicle 3 is equipped with at least one repeater box 2.
Every row motor train unit comprises eight joint compartments, for easy to detect, generally adopts 1, one of two test console as anteposition test console, and another is as rear bit test control desk, between two test consoles 1 by the Ethernet control that links.In 8 joint compartments of motor train unit, generally at 3 places, No. 3 tested compartment, arrange a test console 1 (anteposition test console) wherein, at 3 places, No. 6 tested compartment, arrange another test console 1 (rear bit test control desk) wherein.Each test console 1 is tested the four tested compartments 3 of joint respectively, like this, can be easy to use, convenient test, can certainly share a test console 1 in 8 joint compartments, also can increase the quantity of test console 1 on the contrary.
8 joint compartments of motor train unit, adopt altogether 9 repeater boxs 2, repeater box 2 numbering be followed successively by No. 1, No. 2, No. 3, No. 4, No. 5 (300 kilometers), No. 5 (200 kilometers), No. 6, No. 7, No. 8, according to the difference of classification type, No. 5 compartment arranges two repeater boxs 2, respectively corresponding 300 kilometers of vehicles and 200 kilometers of vehicles.Two test consoles 1 are arranged in No. 3 cars of motor train unit, No. 6 repeater box 2 installed positions corresponding to car.
9 repeater boxs 2 are arranged between elevated rail support column (not shown) along track successively according to above-mentioned No. 1 → No. 8 sequences, elevated rail support column is for supporting motor train unit test with track, wherein No. 5 (300 kilometers) and 2 mounting distances of No. 5 (200 kilometers) repeater boxs are 4m left and right, and 2 mounting distances of all the other each repeater boxs are 25m left and right.
As shown in Figure 4, repeater box 2 comprises a casing 25, includes electric function chamber 26 and pipeline storage chamber 27 in casing 25, and casing 25 is fixed on base 28, is also provided with the holder 29 for fixed relay case 2 on casing 25.
In this test macro, have numerous distributions, distribution is all fixed in wiring groove (not shown), wiring groove along rail supported post outside, repeater box 2 tops connect and arrange.
As shown in Figure 1, it is example that the test console 1 of take connects the two tested compartments 3 of joint, and other tested compartment 3 is identical therewith with the connected mode of test console 1.
Test console 1 includes the load simulated unit 21 of the empty spring of vehicle, velocity simulate unit 22, sampling and analysis of signal unit 23, regenerative braking simulation and feedback unit 24.Wherein, regenerative braking simulation and feedback unit comprise that regenerative braking request voltage measurement unit and regenerative braking feed back equivalent voltage cell.
As shown in Figures 2 and 3, the hardware device of test console 1 includes industrial computer 4, display 5, guidance panel 6, function generator 7, AVI voltage analog device 9, DC24V Switching Power Supply 10, reservoir 11, proportioning valve 12, wire casing 13, hub, pressure transducer 32, voltage sensor, network connection plate, aviation connector, various electric component and air-channel system.
Described hardware device is all integrated in a cabinet 14, cabinet 14 is lyrate, for easy to detect, universal wheel 15 is installed below cabinet 14, like this, can need arbitrarily mobile this test console 1 according to test, and test console 1 can be fixedly secured to the arbitrary position at pilot region, as long as connect relevant data line, electric wire and air pipe line, can test.
Wherein, industrial computer 4 adopts P4-3.0G industrial computer, is furnished with the equipment such as keyboard 16 and mouse, and industrial computer 4 disposes DVD-ROM and Ethernet card, is also at least provided with in addition a RS232 serial ports and a plurality of USB port.Industrial computer 4 is mainly used in the Treatment Analysis of the setting of pilot project operating mode and the definition of testing standard, measured data record etc.
Because electric wire and the signal wire of this test console 1 are more, so, in cabinet 14, be provided with a plurality of wire casings 13, wire casing 13 is arranged around the surrounding of cabinet 14 inner sides, described electric wire and signal wire classification are arranged in each wire casing 13, not only convenient arrangement, and saving space.
Display 5 adopts liquid crystal display, by display supporting plate 34 and display plate washer 35, is fixed on cabinet 14.Reservoir 11 is fixed on cabinet 14 by reservoir seat 36, and proportioning valve 12 passing ratio valve supporting plates 37 are fixed on cabinet 14.On guidance panel 6, be provided with various gauge tap, starting switch and shutdown switch etc., by pressing related switch, can complete relevant operation, simple to operation.Above guidance panel 6, being also provided with daylight lamp 38, is also for the ease of operator's operation and data recording etc.
Main electric component includes junction box 8, terminal row 17, main circuit switch row 18, insert row 19, unit controls case 20.Wherein, junction box 8 is fixed on cabinet 14, for test console 1, leads to being connected of line cable with outside; Terminal row 17 is realized the separated time of test console 1 inner same signal, the line that converges; Main circuit switch row 18 is as test console 1 each system air switch assembly; Insert row 19 is embodied as the power supplies such as industrial computer 4, function generator 7, AVI voltage analog device 9; Unit controls case 20 has been realized analog quantity and has been controlled the unit-modularized designs such as output board, analog signals collection plate, digital output.
The load simulated unit of the empty spring of vehicle in test console 1, mainly completes the signal imitation of the various load conditions of vehicle empty wagons or staffing.The empty spring load cell of vehicle is mainly controlled output board, analog signals collection plate, digital output, proportioning valve 12,3 position-5 way solenoid valve 30, pressure transducer 32 etc. by analog quantity and is formed, and wherein analog quantity control output board, analog signals collection plate and digital output are integrated in unit controls case 20.
The workflow of the load simulated unit of the empty spring of vehicle: wind outside enters the reservoir 11 of test console 1 by airduct, analog quantity is controlled output board output signal (according to different vehicle load, export different voltage control signals), control ratio valve 12 is opened (open amount according to different voltage input signals and difference), test console 1 discharge pressure of fan, by the air outlet pipeline of laying in advance, transfer to the repeater box 2 that each vehicle is corresponding, digital output output switch voltage signal, control the switch of 3 position-5 way solenoid valve 30, 3 position-5 way solenoid valve 30 is arranged on reservoir 11 to the air outlet pipeline between repeater box 2, and then control and to compartment, fill wind or air draft, the pressure transducer 32 of each repeater box 2 gathers each car wind pressure signal, and feed back to analog signals collection plate, analog signals collection plate carries out signal fusing, if wind pressure signal value of being above standard, digital output output switch voltage signal, control 3 position-5 way solenoid valve 30 and fill wind or air draft, finally realize each car wind pressure signal and meet testing requirements.Wherein, blast, digital quantity and analog output, feedback are all transmitted by preset in advance airduct, electric wire and order wire.
Velocity simulate unit mainly completes the signal imitation of friction speed between vehicle 0-400km/h, and velocity simulate unit is mainly comprised of signal controlling plate, function generator 7, relay row 31, anti-interference fender etc.The industrial computer 4 signal controlling plates that test console 1 is attached troops to a unit send square wave or the sine wave of different frequency and amplitude by GPIB agreement control function generator 7; then by relay, arranging 31 realizes speed channels between different vehicle and switches; in this unit, configured anti-interference fender simultaneously; can effectively prevent the unexpected signal of high-frequency interferencing signal or high pressure; each velocity simulate signal is passed to each corresponding repeater box 2 in tested compartment 3 by default wire casing the most at last, realizes and communicating by letter with the signal imitation of vehicle.
Regenerative braking analogue unit is comprised of switching value voltage source 39, AVI voltage analog device 9, analog signals collection plate etc.In process of the test, by switching value voltage source 39, carry out the setting of DC voltage, force vehicle regenerative braking under static state effective, by AVI voltage analog device 9 simulation on-vehicle traction converter feedback voltage values, to vehicle-mounted brake control, then by analog acquisition plate, detect the variation tendency of the air-making power under regeneration effective status.
Sampling and analysis of signal unit comprises the collection of voltage and air pressure signal and analysis, 5 road voltage sensors, No. 27 pressure transducers 32, analog signals collection plate and database, consists of.Air pressure signal forms electric current loop signals and is passed to test console 1 by being arranged in the pressure transducer 32 of each car repeater box 2, then by metal pattern resistance etc., carries out voltage signal conversion, by analog signals collection plate, carries out data acquisition; Voltage signal is passed to test console 1 voltage sensor by each car repeater box 2 by voltage signal to carry out carrying out information acquisition after ratio step-down.Both signals form actual detected value after remapping by the function of industrial computer 4 and compare in each vehicle data storehouse, thereby judge whether actual detected value meets design requirement.
In control degree, pre-stored have a required working condition of each vehicle test model, selects to automatically switch to required simulated condition after vehicle.In the present embodiment, in test console 1, dispose the vehicle test models such as 200 kilometer motor vehicle groups (4+4), 300 kilometer motor vehicle groups (5+3), 200 kilometers of first draft groups (8+8), 350 kilometer motor vehicle groups (8), by selecting above-mentioned vehicle and corresponding test unit, automatically test console 1 is switched to required operating mode.
In control degree, also pre-stored have a standard database, the various test datas that gather and the data in standard database are compared, and then whether the test data of judgement collection meets design requirement.
Standard database possesses two kinds of functions: function one is that speed output valve, AS pressure set points, BC pressure decision content, BP voltage decision content, the AVR voltage output value by preserving in database completes test automatically, after selected mensuration project, measurement result data and undeterminate data identify respectively with different colours, measurement result data in the tolerance of setting and being distinguished with different colours outside tolerance, show that result is very clear; Function two is in database, to increase pilot project by possessing authorized person, revises all kinds of parameters, directly changes test interface after preserving.This test macro adopts window interface grabgraf mode to preserve test findings, is convenient to inquiry and the printing of historical data.
In addition, this test macro can also be realized the functions such as network information exchange and transducer calibration.
The program of test console 1 is operation automatically, also can adopt semi-automatic input to set related data, as reset the data such as speed, empty spring pressure.
Test console 1 arranges scram button, for cutting off the power supply of all devices, guarantees, in test process as while there is unexpected situation, to cut off the electricity supply in time, guarantees safety.
As shown in Figure 5, describe the step of EMU braking method of testing below in detail:
1, two test consoles 1 are moved to respectively No. 3 and 3 places, No. 6 tested compartments, and two test consoles 1 are parked in pilot region securely.By relevant data line, electric wire and air pipe line are connected with tested compartment 3.
2, between two test consoles 1, adopt Ethernet to carry out joint control, set one of them for main control end, another is from control end.
3, on guidance panel 6, select tested vehicle and corresponding test unit, automatically control program is switched to required operating mode.
4, keep tested compartment 3 under static state, utilize test macro simulating vehicle empty wagons, staffing, the empty spring load signal of the vehicle of friction speed, velocity simulate signal and regenerative braking simulating signal between 0-400km/h, and simulating signal is sent to the general control system of tested vehicle 3, the general control system of vehicle will judge and adopt which kind of braking grade according to the signal receiving, by vehicle, apply braking gear signal.
5, the corresponding above-mentioned operating mode of tested vehicle 3 brake system, carries out braking maneuver, and exports the braking information such as brake pressure signal, regeneration request signal, EP electric current simultaneously.
6, test console 1 gathers relevant braking test data, and the normal data in the data of collecting and standard database is contrasted, judgement log, and then whether the property indices of mensuration brake system meets design requirement.
Test determination project comprises as follows:
(1) simulation empty wagons, staffing are carried out service braking, fast braking power numerical value and change curve and are detected under friction speed between 0～400km/h.
(2) Emergency Negative Thrust numerical value and change curve detect.
(3) electric empty calculation relation detects (regenerative braking request voltage acquisition and analog voltage reduce by half in real time feedback)
By sampling and analysis of signal unit, detect in real time the regeneration request voltage signal that vehicle brake control apparatus sends, the regeneration principle of feedback that reduces by half according to motor train unit simultaneously, by regenerative braking analogue unit, implement to send simulation traction convertor regenerative braking voltage signal, the empty matching relationship of electricity in checking car brakeing process.
(4) antiskid system demonstration test.
When four axle high-speed cruisings of Negotiation speed analogue unit simulating vehicle are braked, when wherein the retarded velocity of an axle or velocity contrast are greater than antiskid valve 33 action triggers value, brake control is to the anti-skidding steering logic of the damping force of this axle.
(5) empty spring compensate function detects.
Whether the brake control output damping force by the empty spring pressure of the load simulated unit simulation vehicle of the empty spring of vehicle under damaged or abnormal heavily loaded operating mode is controlled according to design parameter.
(6) voltage signal gathering by T2 or repeater box corresponding to M4 car 2, measured the response time of the instruction of service braking, fast braking, brake hard and air-making power.
As mentioned above, given scheme content, can derive similar technical scheme by reference to the accompanying drawings.In every case be the content that does not depart from technical solution of the present invention, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all still belong in the scope of technical solution of the present invention.
Claims (6)
1. an EMU is braked method of testing, it is characterized in that: under motor train unit stationary state, utilize test macro to simulate various rate signals, the empty spring load signal of vehicle and regenerative braking simulating signal, motor train unit receives after each simulating signal, by motor vehicle braking system, apply braking maneuver, output braking information, and then pass through the collection of braking-distance figures and analysis, whether the property indices of measuring brake system meets design requirement, and specifically comprises:
Rate signal simulation, by industrial computer, by GPIB agreement control function generator, sent square wave or the sine wave of different frequency and amplitude, by relay, arranged and realized speed channels between different vehicle and switch again, each velocity simulate signal is passed to the repeater box that each tested compartment is corresponding the most at last;
The empty spring load signal simulation of vehicle, wind outside is introduced to test console by airduct, according to different vehicle load, by exporting the open amount of different voltage control signal control ratio valves, to control, export corresponding blast, and transfer to by the air outlet pipeline of laying in advance the repeater box that each vehicle is corresponding, by output switch voltage signal, control and to compartment, to fill wind or air draft again, by the pressure transducer of each repeater box, gather each car wind pressure signal;
The simulation of regenerative braking simulating signal, by switching value voltage source, carry out the setting of DC voltage, force vehicle regenerative braking under static state effective, by AVI voltage analog unit simulation on-vehicle traction converter feedback voltage value to vehicle-mounted brake control.
2. EMU according to claim 1 is braked method of testing, it is characterized in that: the working condition that each vehicle test model is required is pre-stored in the control program of test macro, select to automatically switch to required simulated condition after vehicle.
3. EMU according to claim 1 is braked method of testing, it is characterized in that: pre-stored in the control program of test macro have a standard database, data in the test data of collection and standard database are compared, and then whether the data that judgement gathers meet design requirement.
4. a test macro of realizing EMU braking method of testing as claimed in claim 1, is characterized in that: comprise test console and repeater box;
Described test console comprises industrial computer, demonstration and operating unit, the load simulated unit of the empty spring of vehicle, velocity simulate unit, regenerative braking simulation and feedback unit, sampling and analysis of signal unit;
Described repeater box for carrying out information acquisition and transmission between tested compartment and described test console, and the tested compartment of every joint is equipped with at least one repeater box;
The load simulated unit of the empty spring of described vehicle is by reservoir, analog quantity is controlled output board, analog signals collection plate, digital output, proportioning valve, 3 position-5 way solenoid valve and pressure transducer form, described proportioning valve is arranged on the air outlet pipeline of described reservoir, the repeater box in another each tested compartment of termination of described air outlet pipeline, described analog quantity is controlled the aperture of output board control ratio valve, institute's pressure transducer is for gathering the blast in each compartment, pressure transducer is connected with analog signals collection plate, analog signals collection plate carries out signal fusing, analog signals collection plate is connected with digital output partitioned signal, described digital output is controlled the switch of 3 position-5 way solenoid valve, described 3 position-5 way solenoid valve is arranged on described air outlet pipeline,
Described velocity simulate unit is comprised of signal controlling plate, function generator, relay row, described signal controlling plate sends square wave or the sine wave of different frequency and amplitude by GPIB agreement control function generator, by relay, arrange and realize speed channels between different vehicle and switch, each velocity simulate signal is passed to by signal wire the repeater box that each tested compartment is corresponding, realizes and communicating by letter with the signal imitation of vehicle;
Described regenerative braking simulation and feedback unit are comprised of switching value voltage source, AVI voltage analog device, analog signals collection plate, described switching value voltage source is for the setting of process of the test DC voltage, described AVI voltage analog device is used for simulating on-vehicle traction converter feedback voltage value to vehicle-mounted brake control, and described analog signals collection plate is for detection of the air-making power under regeneration effective status.
5. test macro according to claim 4, is characterized in that: described test console is a plurality of, between a plurality of test consoles by the Ethernet control that links.
6. test macro according to claim 4, is characterized in that: described sampling and analysis of signal unit is comprised of plurality of voltages sensor, pressure transducer, analog signals collection plate and standard database; Described pressure transducer converts electric current loop signal to for the air pressure signal that each car repeater box is received and is passed to test console, and described voltage sensor is for ratio step-down, and described analog acquisition plate is for data acquisition.
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| CN201110066273.2A CN102680253B (en) | 2011-03-18 | 2011-03-18 | Method and system for testing brake of high-speed motor train unit |
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| CN201110066273.2A CN102680253B (en) | 2011-03-18 | 2011-03-18 | Method and system for testing brake of high-speed motor train unit |
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| JP2001074615A (en) * | 1999-09-06 | 2001-03-23 | Hitachi Ltd | Automatic tester for rolling stock |
| KR20040055139A (en) * | 2002-12-20 | 2004-06-26 | 한국철도기술연구원 | Electric railroad test measuring system |
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| CN1307232A (en) * | 2000-01-21 | 2001-08-08 | 邹高扬 | Checking method and equipment for air brake performance of railway train |
| CN2580427Y (en) * | 2002-12-24 | 2003-10-15 | 朱金良 | One machine remote control five vehicle braking train test device |
| CN201297983Y (en) * | 2008-10-28 | 2009-08-26 | 南车南京浦镇车辆有限公司 | Train speed signal simulator based on computer PCI technology |
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