CN2755604Y - Comprehensive tester of antiskid unit of train - Google Patents
Comprehensive tester of antiskid unit of train Download PDFInfo
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- CN2755604Y CN2755604Y CN 200420080178 CN200420080178U CN2755604Y CN 2755604 Y CN2755604 Y CN 2755604Y CN 200420080178 CN200420080178 CN 200420080178 CN 200420080178 U CN200420080178 U CN 200420080178U CN 2755604 Y CN2755604 Y CN 2755604Y
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- 230000006870 function Effects 0.000 description 27
- 238000013461 design Methods 0.000 description 9
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- 238000011161 development Methods 0.000 description 3
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model relates to a comprehensive tester of an antiskid unit for a train, which belongs to a tester for the failure test of a mainframe of an antiskid unit for a train. The utility model comprises a central processing unit, a speed sensor signal electronic simulation component, an exhaust valve simulation circuit, a state indication module, a static failure testing simulation switch module, a display module, and a testing function selecting simulation and a gate control signal indication module. The tester which is a portable instrument can carry out a field test and check for an antiskid unit system on a train, and can simulate various stationary and movable states of the train independently and comprehensively. The tester can finish various static and dynamic function test checks of the mainframe of an antiskid unit, can comprehensively examine the validity and the reliability of every function of the mainframe of the antiskid unit, and can find out the hidden danger of the mainframe of the antiskid unit effectively in time to ensure the operating safety of the train. The tester has the characteristics of small size, light weight, portability, easy operation, etc.
Description
Technical field
Antiskid unit of train comprehensive experimental device of the present utility model belongs to the antiskid unit of train hostdown and detects test unit.
Background technology
A large amount of train operation crash analyses both at home and abroad show that most of train accidents are all relevant with brake system.If the brake system failure of train will cause train colliding or bump against serious accidents involving serious consequences such as wiping with other vehicle, article; Brake the improper damage that also can cause rail or wheel, even cause the derail major accident.So desirable train braking should guarantee efficiently, reliable, can not cause flat sliding again.In the train braking process, if adhesion is relatively poor between wheel track, wheel occurs even rolling the sliding running status of band to meeting, influences braking effect; And adhere between wheel track when satisfying certain condition, Train Wheel is slided with close retarded velocity trace simultaneously to meeting, and at this moment braking effect is best.
The antiskid unit of train system is the train braking ensuring equipment of realizing that this near optimal braking task designs, and it is the critical component that ensures safe train operation, and is particularly important to bullet train.The introducing of anti-skid device system can prevent effectively that on the one hand wheel is to causing flat sliding because of sliding when braking; Can change brake-cylinder pressure in the variation that when braking adheres between according to wheel track on the other hand, regulate damping force,, realize short braking distance, ensure the efficient, reliable of train braking to make full use of the adhesion between wheel track.
As the critical component that train braking ensures, the reliability of anti-skid device system self work is particularly important.Antiskid unit of train system comprises main frame and speed pickup, clamping device parts such as (exhaust valve, checking cylinders etc.).Although the anti-skid device main frame has stronger self-checking function usually, but detect faults such as exhaust valve, speed pickup and some peripheral wiring, but the functional reliability of inner each module of main frame, each function is often unknown, lacks necessary safeguard.For this reason, press for development effectively test, pick-up unit.
At present, on the speed-raising of China railways, quasi high-speed, the hot-short all dress used anti-skid device, and the kind of anti-skid device is more, the domestic and imported anti-skid device is also deposited.But from the present situation of present anti-skid device test, detection, product both domestic and external is still not mature enough, and the performance and the scope of application of existing anti-skid device test unit are difficult to satisfy application demand.Because the restriction of technological means, can only be undertaken by testing table in fixed point maintenance department the detection test of anti-skid device at present, can't directly regularly carry out site test to the anti-skid device main frame ON TRAINS detects, can not find the function hidden danger that the anti-skid device main frame causes because of internal circuit failure in time, this has stayed hidden danger also for the security of operation of train.
The utility model content
Task of the present utility model is at the requirement of above-mentioned prior art and present situation, provide that a kind of volume is little, in light weight, function admirable, can be at the various states of on-the-spot comprehensive simulated train steady of train and operation, finish the various static state of anti-skid device main frame and the test of dynamic function, in time understand the duty of anti-skid device main frame, efficient diagnosis goes out anti-
Slide the work hidden danger of device main frame, guarantee the integration test device for antiskid unit of train operating safety.
Realize the integration test device for antiskid unit of train of above-mentioned task, comprise CPU (central processing unit), the speed sensor signal electronic simulation parts that link to each other with the antiskid unit of train main frame with CPU (central processing unit), the exhaust valve simulation and the state indicating module that link to each other with the antiskid unit of train main frame, the envelope test fault simulation switch module that links to each other with simulation of speed sensor signal electronic simulation parts and exhaust valve and state indicating module, display module that links to each other with CPU (central processing unit) and test function are selected module, import and indicating module with the gate-control signal that CPU (central processing unit) links to each other with the antiskid unit of train main frame.
Speed sensor signal electronic simulation parts are critical components, to realize the dynamic test to the anti-skid device main frame, as normal running test, emergency braking tests etc.This test unit need provide the train operation state of various simulations for the anti-skid device main frame, and the control output to exhaust valve under various states is detected, indicates to main frame, to judge the correctness and the validity of the relevant control function of anti-skid device main frame.
In the real work, the anti-skid device main frame is to finish by the signal that detects four tunnel train speed sensor to the differentiation of train operation state.The output signal of speed pickup is the voltage or the electric current of waveforms such as frequency continually varying sine, and wherein and different, frequency changes continuously with the travelling speed of train with the speed pickup type of anti-skid device system support for waveform and signal pattern.Therefore, produce waveform such as the continuously adjustable sine of frequency and the speed pickup output when simulating train operation with the appropriate signals pattern is that this combined test apparatus is finished the crucial and basic of dynamic test.
Speed sensor signal electronic simulation parts of the present utility model comprise that the output terminal of simulating signal generation module is connected in the input end of speed sensor signal matching module.Wherein, simulating signal generation module comprises that the waveform generator output terminal is connected in the input end of filtering, amplification, expansion module, is used to generate the input end that four tunnel simulating signals export the speed sensor signal matching module to; The function of speed sensor signal matching module is for the anti-skid device main frame is provided on the signal pattern and the mode of connection simulating signal with on all four No. four speed pickups of real sensor, can design at the supporting speed pickup type of anti-skid device main frame.Like this, the output waveform, the replacement velocity sensor signal matching module that only need to revise waveform generator promptly can be used for the simulation that different preventing is slided the device speed pickup, make combined test apparatus of the present invention can be applicable to that the test of multiple anti-skid device main frame detects.
For satisfying the demand of envelope test, also designed envelope test fault simulation switch, speed sensor signal electronic simulation parts that control links to each other with the anti-skid device main frame and exhaust valve mimic channel and state indicating module, finish each road speed pickup and the simulation of faults such as exhaust valve opens circuit, short circuit, and the failure code that shows during by the static self check of main frame, judge the correctness and the completeness of the static self-checking function of main frame.
The anti-skidding combined test apparatus of the utility model train is a kind of portable instrument, can regularly carry out site test to the anti-skid device main frame ON TRAINS detects, the various states of comprehensive simulated train steady and motion independently, finishing the various static state of multiple anti-skid device main frame and the test of dynamic function detects, investigate validity, the reliability of the every function of anti-skid device main frame comprehensively, diagnose out timely and effectively the work hidden danger of anti-skid device main frame, guarantee the security of operation of train.This test unit also have volume little, in light weight, be easy to carry, characteristics such as easy and simple to handle, can satisfy directly and ON TRAINS the anti-skid device main frame be carried out the needs that site test detects, and the test of anti-skid device main frame in the past can only be undertaken by testing table between tool car, and must adopt supporting speed pickup and exhaust valve.
Description of drawings
Fig. 1 is the integration test device for antiskid unit of train composition frame chart.
Fig. 2 is speed sensor signal electronic simulation parts composition frame charts.
Fig. 3 is a simulating signal generation module composition frame chart.
Fig. 4 is the development process figure of Programmable Logic Device in the DDS waveform generator.
Fig. 5 is a kind of sensor signal match circuit figure that designs at the supporting inductive type speed pickup of certain homemade anti-skid device main frame.
Fig. 6 is exhaust valve mimic channel and state indicating module composition frame chart.
Fig. 7 is a main program flow chart of the present utility model.
Fig. 8 is the envelope test subroutine flow chart.
Fig. 9 is normal operation and a brake hard subroutine flow chart in the dynamic test.
Figure 10 is the speed curve diagram of the normal running test of train.
Figure 11 is the speed curve diagram of train emergency braking tests.
Figure 12 is an anti-skid device main frame gate test subroutine flow chart.
Figure 13 is the speed curve diagram of anti-skid device main frame gate test.
Embodiment
Fig. 1 is the integration test device for antiskid unit of train composition frame chart, is formed (hereinafter to be referred as combined test apparatus) by centre unit, speed sensor signal electronic simulation parts, envelope test analog switch and exhaust valve simulation and state indicating module, display module, gate-control signal input and indication, test function selection knob.
Fig. 2 is speed sensor signal electronic simulation parts composition frame charts.Be connected in the input end of speed sensor signal matching module by the output terminal of simulating signal generation module.
Fig. 3 is the simulating signal generation module composition frame chart in the speed sensor signal electronic simulation parts.Produce waveform signals such as sine by the waveform generator that receives external microcontroller control, through filtering, the output of amplification rear drive four tunnel simulating signals.Wherein the frequency of signal is by outside CPU (central processing unit) Single-chip Controlling.During dynamic test, the CPU (central processing unit) single-chip microcomputer calls corresponding subroutine, calculates the signal frequency of speed pickup according to the travelling speed of train, exports waveform generator to through interface circuit, obtains the signal of corresponding frequencies and waveform.Wherein the waveform generator circuit can utilize programmable logic device (PLD) to produce waveform signals such as sine wave, also can adopt other method to realize, as the special signal generator etc.
Adopted the scheme that produces waveform signals such as sine wave based on programmable logic device (PLD) in the utility model.Programmable logic device (PLD) is a kind of faster new type integrated circuit of developed recently, has advantages such as integrated level height, good reliability, operating rate be fast.It is with EEPROM, and SRAM or FLASH are the basis, can programme according to actual needs, determine chip functions.Therefore, use programming device to realize the dirigibility that waveform generator can improve system, shorten the design cycle, also be convenient to improvement, the upgrading of product in the future.In addition, this waveform generator is based on the principle of Direct Digital frequency synthesis DDS (direct digital synthesizer), has advantages such as frequency accuracy height, controllable waveform be good.
In Fig. 3, form by circuit such as frequency control and address generator, wave memorizer and D/A based on the DDS waveform generator of programming device.Wherein frequency control and address generator are realized by programmable logic device (PLD), comprise the input interface (inport), totalizer (accumulator), frequency divider (divid), the waveform memory address output (outport) that link to each other with single-chip microcomputer.Programmable logic device (PLD) among the design has been selected the EPM7128 of Altara company for use, and carry out Logic Circuit Design with VHDL language, the MAX+Plus10.2BASELINE that provides with Altara company is functions such as developing instrument, completion logic programming, compiling, functional simulation, time series analysis.Its development process figure as shown in Figure 4.
The other parts of simulating signal generation module are custom circuit among Fig. 3.Wave memorizer has adopted 2764EPROM among the design, and D/A has adopted DAC0832 commonly used, and its output is amplified to ± 5V by discharge circuit, and after RC filtering, power amplification, is extended to the output of four tunnel simulating signals.The data of revising in the wave memorizer can make the DDS waveform generator produce different waveform signals.
The function of the speed sensor signal matching module in the speed sensor signal electronic simulation parts is to be provided on the signal pattern and the mode of connection simulating signal with on all four No. four speed pickups of real sensor for the anti-skid device main frame.It needs to design at the supporting speed pickup type of anti-skid device main frame.Fig. 5 is a kind of sensor signal match circuit that designs at the supporting inductive type speed pickup of certain homemade anti-skid device main frame, and wherein T1-T4 is that signal transmission device, R1-R4 are that impedance matching resistance, S1-S4 four-way switch are used to realize the simulation of speed pickup open circuit fault.
Fig. 6 is exhaust valve mimic channel and state indicating module, is made up of four tunnel identical structures, and wherein each road comprises that exhaust valve mimic channel, exhaust valve open circuit and short circuit analog switch, exhaust valve status indicator lamp and sampling resistor thereof.During the main frame envelope test, the exhaust valve mimic channel with open circuit, the short circuit analog switch matches and can simulate the opening circuit of exhaust valve, short trouble, and the failure code that shows during by the static self check of main frame, judge the correctness and the completeness of the static self-checking function of main frame; During the main frame dynamic test, can indicate the air draft of exhaust valve and fill the wind state by sampling resistor exhaust valve status indicator lamp.When anti-skid device host computer control exhaust valve moved, corresponding flicker can appear in status indicator lamp, otherwise showed that there is fault in the anti-skid device main frame to the control function of exhaust valve.
Envelope test fault simulation switch comprises that speed pickup open circuit fault analog switch and exhaust valve open circuit, short circuit analog switch two large divisions, its implementation can be respectively referring to the relevant portion of Fig. 5, Fig. 6.
Display module among Fig. 1 is made up of 8279,8 LED of special-purpose display control chip and peripheral circuit, is used to realize simulating the speed per hour of train operation and the demonstration of time.Wherein, 8279 are keyboard, display control chip commonly used, its low price, and convenient with the interface of CPU (central processing unit) MCS-51 single-chip microcomputer, its application process can be referring to relevant Application of Microcomputer books.
CPU (central processing unit) adopts the MCS-51 single-chip microcomputer, it exports the speed per hour and the time of current simulation train operation to display module by the I/O interface, export the speed parameter of current simulation train operation to simulating signal generation module, and test function is selected the input of knob signal, the gate-control signal input and the indication of anti-skid device main frame.
Be the realization task, the utility model also has following computer program process flow diagram.
Fig. 7 is a main program flow chart of the present utility model.This combined test apparatus can select to carry out envelope test, the dynamic test (normal operation, brake hard, gate test) of anti-skid device main frame according to the function selecting knob, enters corresponding subroutine after by the test start button, finishes every test function.
Fig. 8 is the envelope test subroutine flow chart.When the condition of the function in Fig. 7 master routine 1 satisfied, it was 0 that train speed is set, and to speed pickup analog component output speed, making the analog sensor output signal frequency is zero, and the simulation train remains static, and shows speed this moment.At this moment, the fault simulation on off state of speed pickup and exhaust valve can be set by the user arbitrarily, and startup anti-skid device main frame enters static self-checking function.The failure code that shows during by the self check of main frame static state and the speed pickup and the exhaust valve malfunction of setting compare, and can judge the correctness and the completeness of the static self-checking function of main frame.
Fig. 9 is normal operation and the brake hard subroutine flow chart in the anti-skid device main frame dynamic test.
The rate curve of the normal running test of train as shown in figure 10, velocity variations comprises three phases: at first from the static V that raises speed
z(km/h), time spent T
Z1(s), keep constant speed V then
zOperation T
Z2(s), decelerate to 0 again, time spent T
Z1(s).
The rate curve of train emergency braking tests as shown in figure 11, speed-raising is identical with the normal running test of train with constant rate period, but brake hard to subtract acceleration bigger, the time spent in decelerating phase, normal running test was shorter, time spent T
J1(s).
Therefore, normal operation in the main frame dynamic test and brake hard subroutine can illustrate with a process flow diagram, are the deceleration parameters difference in decelerating phase.
In Fig. 9, the timer timing of this program, train acceleration, constant speed, when running slowly, according to rate curve with calculate current train speed working time, export the speed per hour and the time of current simulation train operation respectively to display module, export current speed parameter to simulate the running status of train to the speed pickup analog component.The user can judge the correctness of main frame dynamic control function according to anti-skid device main frame control output (exhaust valve, gate-control signal) state during dynamic test.
Figure 12 is the gate test subroutine flow chart in the anti-skid device main frame dynamic test.The control signal of forbidding the train door-lock opening that is provided by the anti-skid device main frame when train running speed surpasses certain value is provided the gate-control signal of train.Therefore, the gate test is promptly called the acceleration, deceleration subroutine by gate trial curve (as shown in figure 13) and is provided the acceleration of train, the simulation of slowing down to main frame.When acceleration was opened speed above the gate-control signal of host setting, main frame sent gate-control signal, forbids the train door-lock opening.After single-chip microcomputer detects this signal, open the gate-control signal pilot lamp, and stop to quicken, open velocity ratio by the present speed of LED demonstration and the gate of host setting, judge the correctness of main frame gate control function by the user.The user can begin to simulate the train deceleration operation by start key, and when the gate-control signal that is decelerated to host setting closed speed, the Host Shutdown gate-control signal allowed the train door-lock opening; Single-chip microcomputer cuts out the gate-control signal pilot lamp after detecting this signal pass, and stops to slow down, and closes velocity ratio by the user by the present speed of demonstration and the gate of host setting, the correctness of judgement main frame gate control function.Press start key, can simulate train and further be decelerated to zero velocity.If the gate control function of main frame breaks down, normally do not open or close gate-control signal, then can not occur changing the time-out that causes because of gate-control signal by gate trial curve acceleration shown in Figure 13 or in running slowly.
Claims (2)
1. integration test device for antiskid unit of train, it is characterized in that, comprise CPU (central processing unit), the speed sensor signal electronic simulation parts that link to each other with the antiskid unit of train main frame with CPU (central processing unit), the exhaust valve simulation and the state indicating module that link to each other with the antiskid unit of train main frame, the envelope test fault simulation switch module that links to each other with simulation of speed sensor signal electronic simulation parts and exhaust valve and state indicating module, display module that links to each other with CPU (central processing unit) and test function are selected module, import and indicating module with the gate-control signal that CPU (central processing unit) links to each other with the antiskid unit of train main frame.
2. integration test device for antiskid unit of train according to claim 1 is characterized in that, speed sensor signal electronic simulation parts comprise that the output terminal of simulating signal generation module is connected in the input end of speed sensor signal matching module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420080178 CN2755604Y (en) | 2004-10-13 | 2004-10-13 | Comprehensive tester of antiskid unit of train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420080178 CN2755604Y (en) | 2004-10-13 | 2004-10-13 | Comprehensive tester of antiskid unit of train |
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| Publication Number | Publication Date |
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| CN2755604Y true CN2755604Y (en) | 2006-02-01 |
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| CN 200420080178 Expired - Lifetime CN2755604Y (en) | 2004-10-13 | 2004-10-13 | Comprehensive tester of antiskid unit of train |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316238C (en) * | 2004-10-13 | 2007-05-16 | 南京航空航天大学 | Integration test device for antiskid unit of train |
| CN112197981A (en) * | 2019-07-08 | 2021-01-08 | 中车长春轨道客车股份有限公司 | Method and device for testing anti-skid performance of railway vehicle |
-
2004
- 2004-10-13 CN CN 200420080178 patent/CN2755604Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316238C (en) * | 2004-10-13 | 2007-05-16 | 南京航空航天大学 | Integration test device for antiskid unit of train |
| CN112197981A (en) * | 2019-07-08 | 2021-01-08 | 中车长春轨道客车股份有限公司 | Method and device for testing anti-skid performance of railway vehicle |
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Effective date of abandoning: 20041013 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |