CN106707063A - Automatic test bench for rail transit electronic product - Google Patents
Automatic test bench for rail transit electronic product Download PDFInfo
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- CN106707063A CN106707063A CN201611240921.0A CN201611240921A CN106707063A CN 106707063 A CN106707063 A CN 106707063A CN 201611240921 A CN201611240921 A CN 201611240921A CN 106707063 A CN106707063 A CN 106707063A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
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- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The invention discloses an automatic test bench for rail transit electronic products. The automatic test bench comprises a PXI system, program-controlled power supply equipment, a function generator, and a signal routing and conditioning module, wherein the PXI system is used for controlling the program-controlled power supply equipment, the function generator and the signal routing and conditioning module, generating test signals according to a test sequence, and detecting and analyzing tested equipment; the function generator is used for generating function signals; the power supply equipment is used for providing the tested equipment with a power supply conforming to test requirements; and the signal routing and conditioning module is used for conditioning and gating the test signals, the function signals and the power supply, and outputting the signals and the power supply to the tested equipment. The automatic test bench provides test equipment required for testing different products, can satisfy test requirements of the rail transit electronic products of different types, does not need to establish a test bench temporarily according to tested electronic products, and has the advantages of good universality, convenient use, high testing efficiency, low cost, high degree of automation and the like.
Description
Technical field
The present invention relates to track traffic electronic product testing field, more particularly to a kind of automation of track traffic electronic product
Testboard.
Background technology
With motion control unit（DCU）And train operation monitoring device（LKJ）For the track traffic electronic product for representing is
The core component of train.Track traffic electronic product pilot project and test method are different, and signal type is more, signal
Specification is also not quite similar.The test bench location or test tool major part of current electronic product are all to build and make temporarily, examination
Instrument and equipment and wiring needed for testing is more, and testing ground is more in disorder, and required input or output signal are needed by artificial
It is input into one by one or detects, test efficiency is very low, and has certain security risk.The special test platform of single product is presently, there are,
Dedicated for a kind of or a class product test, it is adaptable to the inspection of dispatching from the factory of technical staff's research and development debugging use or product of production line
Test.But for track transportation industry third party laboratory, need to carry out the type of different types of track traffic electronic product daily
Formula is tested, and the special test platform of single product is difficult to meet the experiment demand of track traffic electronic product.
The content of the invention
The technical problem to be solved in the present invention is that：For the technical problem that prior art is present, the present invention provides one
Kind of versatility is good, convenient test, testing efficiency are high, low cost track traffic electronic product automatic Test Table.
In order to solve the above technical problems, technical scheme proposed by the present invention is：A kind of track traffic electronic product automation
Testboard, including：PXI systems, programmable power supply equipment, function generator, signal route and conditioning module；
The PXI systems are used to control the power-supply device, function generator and signal route and conditioning module, according to test sequence
Column-generation test signal, and equipment under test is detected, is analyzed；
The function generator is used to produce function signal；
The power-supply device is used to provide the power supply for meeting testing requirement for equipment under test；
The signal route and conditioning module are used to nurse one's health the test signal, function signal and power supply, gate, and defeated
Go out to equipment under test.
As a further improvement on the present invention, the PXI systems include PXI controllers, oscillograph card, resistance card, multichannel
Multiplexer card, serial communication card, universal meter and numeral I/O cards.
As a further improvement on the present invention, the programmable power supply equipment include the first dc source, the second dc source,
Accurate voltage current source and signal power source；First dc source is connected with the PXI controllers；The PXI systems pass through
The PXI controllers control first dc source；The PXI systems control described respectively by the serial communication card
Two dc sources, accurate voltage current source and signal power source.As a further improvement on the present invention, the signal power source is 110V
Signal power source, second dc source is 3 channel DC power supplys.
As a further improvement on the present invention, the signal route and conditioning module include that signal routing module and signal are adjusted
Reason module；The signal routing module is used to switch over the signal of the function generator and the oscillograph card；It is described
Signal-regulated kinase includes that power power-supply modulate circuit, rate signal modulate circuit, sinusoidal signal amplify modulate circuit and cable
Identification modulate circuit；The power power-supply modulate circuit is used to carry out the power supply of the programmable power supply equipment break-make selection control
System, positive and negative polarity switching and timesharing gating conditioning；The rate signal modulate circuit is used to enter the output of the digital I/O cards
Row conditioning；The sinusoidal signal is amplified modulate circuit and is used to be amplified conditioning to the output signal of the function generator；Institute
Stating cable identification modulate circuit is used to be identified the cable of testboard.
As a further improvement on the present invention, the rate signal modulate circuit includes that multichannel nurses one's health passage, the conditioning
Passage includes the DC-DC module and optocoupler inductor of series connection；Per road, the DC-DC module of conditioning passage is mutually isolated.
As a further improvement on the present invention, the PXI systems manage the bottom layer driving of each equipment by drive module；It is logical
Cross runtime engine module management, perform cycle tests；Man-machine interaction is carried out by user interface.
As a further improvement on the present invention, the cycle tests in the runtime engine module is corresponding with test product.
Compared with prior art, the advantage of the invention is that：
1st, testboard of the invention provides the test equipment required for being tested for different product, can meet to difference
The testing requirement of the track traffic electronic product of type is general without needing to build testboard temporarily according to by tested electronic product
Good, the easy to use, testing efficiency of property is high, low cost.
2nd, the present invention will be encapsulated in runtime engine module for the cycle tests of different tested electronic products, test
Cheng Zhong, it is only necessary to directly select cycle tests, high degree of automation greatly improves testing efficiency, reduces test
Cost.
Brief description of the drawings
Fig. 1 is specific embodiment of the invention structural representation.
Fig. 2 is specific embodiment of the invention power power-supply modulate circuit structural representation.
Fig. 3 is specific embodiment of the invention rate signal modulate circuit structural representation.
Fig. 4 is that specific embodiment of the invention sinusoidal signal amplifies modulate circuit structural representation.
Fig. 5 is specific embodiment of the invention testboard software configuration schematic diagram.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
Limit the scope of the invention.
As shown in figure 1, the track traffic electronic product automatic Test Table of the present embodiment, including：PXI systems, program-controlled electric
Source device, function generator, signal route and conditioning module；PXI systems are used to control power-supply device, function generator and signal
Route and conditioning module, generate test signal, and equipment under test is detected, is analyzed according to cycle tests；Function generator
For producing function signal；Power-supply device is used to provide the power supply for meeting testing requirement for equipment under test；Signal route and nurses one's health
Module is used to nurse one's health test signal, function signal and power supply, gate, and exports to equipment under test.In the present embodiment,
Include that control signal is transmitted and test between PXI systems and programmable power supply equipment, function generator, signal route and conditioning module
Signal transmission two parts.Control signal transmission aspect, PXI systems control power-supply device, function to occur respectively by control signal
Device and signal route and conditioning module.In terms of test signal transmission, PXI systems, function generator and power-supply device lead to respectively
Cross signal route and conditioning module is connected with equipment under test, test signal, the function hair that PXI systems are produced according to cycle tests
The function signal and the power supply of power-supply device that raw device is produced are nursed one's health, gated, output to equipment under test.Meanwhile,
PXI systems are route and conditioning module by signal, or directly receive the test feedback signal of equipment under test, by anti-to testing
Feedback signal is analyzed treatment, completes the test to equipment under test.
In the present embodiment, the PXI systems include PXI controllers, oscillograph card, resistance card, multiplexer card, string
Row communication card, universal meter and numeral I/O cards.PXI controllers, oscillograph card, resistance card, multiplexer card, serial communication card,
Universal meter and numeral I/O cards are connected by PXI buses.Function generator is connected by bus with PXI controllers, and the bus can be
With LAN buses, LXI buses, between may also include route-exchanging device.In the present embodiment, multiplexer card is multiple, bag
Include 3 both-end multiplexer cards and 1 single-ended multiplexer card.Universal meter is 2.In the present embodiment, PXI systems are matched somebody with somebody
Display and keyboard, mouse are equipped with, can realize being controlled each equipment of whole testboard by PXI systems.Oscillograph card
Real-time measurement for realizing two passage waveform signals.Universal meter realizes the measurement of the signals such as two channel voltages, electric current, resistance.
Resistance card is high precision electro blocked portion, for simulating Pt100 signals, with high resistance resolution ratio and high accuracy.Multichannel
Multiplexer card is used for the switching of signalling channel.Serial communication card is used for and programmable power supply device talk.Digital I O cards for exporting
The adjustable speed pulse signal of 6 channel phases, while controlling multiplexer card and signal route and conditioning module, realizes various
The switching of signal path.
In the present embodiment, the programmable power supply equipment includes the first dc source, the second dc source, accurate voltage electricity
Stream source and signal power source；The PXI systems control first dc source by the PXI controllers；The PXI systems are led to
Cross the serial communication card and control second dc source, accurate voltage current source and signal power source respectively.In the present embodiment
In, the control signal of PXI controllers, through switching equipment, is sent to the first dc source, control by LAN buses by LXI buses
The working condition of the first dc source.PXI systems are set up and the second direct current respectively by serial communication card by RS232 buses
Communication between source, accurate voltage current source and signal power source, the second dc source of control, accurate voltage current source and signal electricity
The working condition in source.Second dc source is 3 channel DC power supplys.The quantity of the first dc source and the second dc source is respectively
1, the quantity of accurate voltage current source is 4, and the quantity of signal power source is 2, is 110V signal power sources.In the present embodiment
In, also including 1 ups power, for the uninterrupted power supply to testboard.
In the present embodiment, the signal route and conditioning module include signal routing module and Signal-regulated kinase；Institute
Signal routing module is stated to be switched over for the signal to the function generator and the oscillograph card；The signal condition mould
Block includes that power power-supply modulate circuit, rate signal modulate circuit, sinusoidal signal amplify modulate circuit and cable identification conditioning electricity
Road；The power power-supply modulate circuit is used to carry out the power supply of the programmable power supply equipment break-make selection control, positive reversed polarity
Switching and timesharing gate conditioning；The rate signal modulate circuit is used to nurse one's health the output of the digital I/O cards；It is described
Sinusoidal signal is amplified modulate circuit and is used to be amplified conditioning to the output signal of the function generator；The cable identification is adjusted
Reason circuit is used to be identified the cable of testboard.
In the present embodiment, signal routing module is by polylith multiplexer switch card, function generator, oscillograph card and quilt
The various data signals of measurement equipment, analog signal and resistance signal are switched over by multiplexer switch card.Programmable power supply sets
It is standby to be additionally provided with independent relay, to realize the independent control to programmable power supply, and prevent reverse power connection.
As shown in Fig. 2 in the present embodiment, power power-supply modulate circuit to the 110V power power-supplies that are input into, by RL1 and
RL2 two-way power relays realize that switching is selected, then realize positive and negative polarity switching by RL3 and RL4 two-way power relays,
The conditioning that power supply timesharing all the way gates two-way power supply is performed by RL5 and RL6 two-way power relay again.Power relay is Europe
The power relay G5LE that nurse dragon PCB is installed, the main circuit current of single-pole double throw 10A.
In the present embodiment, the rate signal modulate circuit includes that multichannel nurses one's health passage, and the conditioning passage includes string
The DC-DC module and optocoupler inductor of connection；Per road, the DC-DC module of conditioning passage is mutually isolated.In testing, survey is generally required
The square-wave signal that test stand is isolated between providing multiplexer channel, frequency is 0.25Hz ~ 50KHz, and high level voltage is 10V ~ 30V, low electricity
The square-wave signal for 0V ~ 2V is put down, and requires that phase-adjustable is whole.By the data signal of the exportable multichannel 3.3V of digital I/O cards,
Due to digital I all passages of O cards by clock synchronization, therefore can meet the requirement of phase adjustment.And voltage is then
Need to be realized by rate signal modulate circuit.In the present embodiment, the rate signal modulate circuit is sensed by high speed photo coupling
Device 6N137 realizes, the maximum transmission rate of 6N137 is 10MBit/s, maximum traffic delay 100ns, input capacitance 60pf, can be with
Meet the requirement of the modulate circuit.Due to needing interchannel delay, therefore the power supply at the G ends of optocoupler inductor needs input power
Powered respectively after isolating DC-DC modules.As shown in figure 3, illustrated by taking 4 tunnels conditioning passage as an example, using ADuM240E
Chip U1 realizes that 4 tunnels isolate DC-DC, and 4 tunnels output IO1_O, IO2_O, IO3_O, IO4_O of chip U1 connect optocoupler sensing respectively
The G ends of device U3, U4, U5 and U6, used as output end, series winding connects a resistance, resistance between D ends and S ends at the S ends of optocoupler inductor
It is 1K Ω, S ends are simultaneously by a resistance eutral grounding of 100K Ω.Certainly, number of channels can set as needed, the conditioning of such as 6 tunnels
Passage, 8 tunnels conditioning passage.
In testing, it is 0.25Hz ~ 5kHz to generally require testboard and provide channelized frequencies, and amplitude is the sine of 0V ~ 20V
Ripple.And the function generator of standard is output as -10V ~ 10V voltage ranges, it is then to function that sinusoidal signal amplifies modulate circuit
The output signal of generator is amplified conditioning.As shown in figure 4, using the binary channels high-performance of LM6172 chips in the present embodiment
Amplifying circuit, switching rate is 3000V/us, with a width of 100MHz, maximum supply voltage 36V.By LM6172 chips to function
The two-way output of generator is amplified conditioning.
In the present embodiment, because signal route and conditioning module are connected by Signal plug with tested electronic product, believe
Number plug is inserted using 50 160 core Europe, in order to prevent the system failure caused by mistake cable, it is therefore desirable to which every cable is carried out
Identification, and is judged, if mistake cable needs software to report an error warning.Cable identification modulate circuit is then to realize entering cable
Row identification, prevents from being erroneously inserted.In the present embodiment, cable recognizes that modulate circuit is realized using TEMP chip 18B20,
18B20 is the i.e. controllable chips of single IO, using the globally unique features of the ID of each chip, can be readily identified
Different cables, the ID of 18B20 is read and is realized by PXI-7811R.
In the present embodiment, the PXI systems manage the bottom layer driving of each equipment by drive module；By runtime engine
Module management, execution cycle tests；Man-machine interaction is carried out by user interface.Cycle tests in the runtime engine module with
Test product correspondence.As shown in figure 5, drive module writes the driver of encapsulation using LabView, the control to each equipment is realized
System, runtime engine module with TestStand sequence management softwares as core, for the test of each test product, if being divided into
Dry testing procedure, for each testing procedure, is corresponded to therewith in runtime engine module by corresponding cycle tests, meanwhile,
Cycle tests is associated with the driver for realizing being called required for the cycle tests, and a certain test is being carried out to certain product
When, it is only necessary to selection cycle tests corresponding with the test of the product, instrument and equipment parameter and I/O channel are set, i.e.,
It is capable of achieving the programme-control of whole test process.Runtime engine module includes cycle tests and test result is analyzed
Database, data file, report file etc..Subscriber interface module is used to provide Man Machine Interface, the corresponding test sequence of selection
Row, set corresponding test parameter, start test program, display, control test process, and test knot is exported after test terminates
Really.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any formal limitation to the present invention.Although of the invention
It is disclosed above with preferred embodiment, but it is not limited to the present invention.Therefore, it is every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modification, equivalent variation and modification made for any of the above embodiments, all should fall
In the range of technical solution of the present invention protection.
Claims (8)
1. a kind of track traffic electronic product automatic Test Table, it is characterised in that including：PXI systems, programmable power supply equipment,
Function generator, signal route and conditioning module；
The PXI systems are used to control the power-supply device, function generator and signal route and conditioning module, according to test sequence
Column-generation test signal, and equipment under test is detected, is analyzed；
The function generator is used to produce function signal；
The power-supply device is used to provide the power supply for meeting testing requirement for equipment under test；
The signal route and conditioning module are used to nurse one's health the test signal, function signal and power supply, gate, and defeated
Go out to equipment under test.
2. track traffic electronic product automatic Test Table according to claim 1, it is characterised in that：The PXI systems
Including PXI controllers, oscillograph card, resistance card, multiplexer card, serial communication card, universal meter and numeral I/O cards.
3. track traffic electronic product automatic Test Table according to claim 2, it is characterised in that：The programmable power supply
Equipment includes the first dc source, the second dc source, accurate voltage current source and signal power source；The PXI systems pass through institute
State PXI controllers and control first dc source；The PXI systems control described second respectively by the serial communication card
Dc source, accurate voltage current source and signal power source.
4. track traffic electronic product automatic Test Table according to claim 3, it is characterised in that：The signal power source
It is 110V signal power sources, second dc source is 3 channel DC power supplys.
5. track traffic electronic product automatic Test Table according to claim 3, it is characterised in that：The signal route
And conditioning module includes signal routing module and Signal-regulated kinase；The signal routing module is used for the function generator
Signal with the oscillograph card is switched over；The Signal-regulated kinase includes that power power-supply modulate circuit, rate signal are adjusted
Reason circuit, sinusoidal signal amplify modulate circuit and cable identification modulate circuit；The power power-supply modulate circuit is used for described
The power supply of programmable power supply equipment carries out break-make selection control, positive and negative polarity switching and timesharing gating conditioning；The rate signal is adjusted
Reason circuit is used to nurse one's health the output of the digital I/O cards；The sinusoidal signal is amplified modulate circuit and is used for the letter
The output signal of number generator is amplified conditioning；The cable identification modulate circuit is used to know the cable of testboard
Not.
6. track traffic electronic product automatic Test Table according to claim 5, it is characterised in that：The rate signal
Modulate circuit includes that multichannel nurses one's health passage, and the conditioning passage includes the DC-DC module and optocoupler inductor of series connection；The conditioning per road
The DC-DC module of passage is mutually isolated.
7. the track traffic electronic product automatic Test Table according to any one of claim 1 to 6, it is characterised in that：Institute
State the bottom layer driving that PXI systems manage each equipment by drive module；By runtime engine module management, perform cycle tests；
Man-machine interaction is carried out by user interface.
8. track traffic electronic product automatic Test Table according to claim 7, it is characterised in that：The runtime engine
Cycle tests in module is corresponding with test product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611240921.0A CN106707063A (en) | 2016-12-29 | 2016-12-29 | Automatic test bench for rail transit electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611240921.0A CN106707063A (en) | 2016-12-29 | 2016-12-29 | Automatic test bench for rail transit electronic product |
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| CN106707063A true CN106707063A (en) | 2017-05-24 |
Family
ID=58895605
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| CN201611240921.0A Pending CN106707063A (en) | 2016-12-29 | 2016-12-29 | Automatic test bench for rail transit electronic product |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107831392A (en) * | 2017-11-29 | 2018-03-23 | 卡斯柯信号有限公司 | A kind of all-electronin interlocks hardware intelligent test system |
| CN108459586A (en) * | 2018-05-25 | 2018-08-28 | 中车青岛四方车辆研究所有限公司 | Multiplexing automatic testing stand based on virtual instrument and test method |
| CN109026813A (en) * | 2018-10-22 | 2018-12-18 | 中车洛阳机车有限公司 | Electric locomotive breeze fan test tool equipment |
| CN109144021A (en) * | 2017-06-15 | 2019-01-04 | 西安中车永电捷通电气有限公司 | The pilot system and method for subway subordinate inverter |
| CN112835342A (en) * | 2021-01-04 | 2021-05-25 | 北京全路通信信号研究设计院集团有限公司 | PXI test system for track circuit |
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| CN112835342A (en) * | 2021-01-04 | 2021-05-25 | 北京全路通信信号研究设计院集团有限公司 | PXI test system for track circuit |
| CN112835342B (en) * | 2021-01-04 | 2022-06-07 | 北京全路通信信号研究设计院集团有限公司 | PXI test system for track circuit |
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Application publication date: 20170524 |