CN106708021A - Signal synchronous assignment method and device for automatically testing rail transit vehicles - Google Patents
Signal synchronous assignment method and device for automatically testing rail transit vehicles Download PDFInfo
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- CN106708021A CN106708021A CN201710016695.6A CN201710016695A CN106708021A CN 106708021 A CN106708021 A CN 106708021A CN 201710016695 A CN201710016695 A CN 201710016695A CN 106708021 A CN106708021 A CN 106708021A
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- signal
- test
- end equipment
- automatic test
- rail traffic
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0256—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system
Abstract
The invention discloses a signal synchronous assignment method and device for automatically testing rail transit vehicles. The method comprises the following steps: S1, generating a testing signal and a control signal at a first end, wherein the testing signal comprises at least two paths of signals needing to be synchronously sent; after packaging and sealing the testing signal by the first terminal, synchronously sending the testing signal and the control signal to a second end; S2, restoring each path of signal in the packaged and sealed testing signal by the second end through encoding, and outputting each path of signal according to the control signal. The signal synchronous assignment method and device have the advantages of eliminating an assignment error which is possibly caused by a synchronization problem in a synchronous assignment process of a plurality of variables, and improving the stability and reliability of testing signal assignment and the like.
Description
Technical field
The present invention relates to a kind of track traffic testing field, more particularly to a kind of letter of rail traffic vehicles automatic test
Number synchronous assignment method and device.
Background technology
With the fast development of field of track traffic, the function of track traffic product is become increasingly complex, and track traffic is produced
The reliability requirement of product also more and more higher.Motion control unit (Drive Control in rail traffic vehicles control device
Unit, abbreviation DCU, the controller on a kind of traction convertor for applying to field of track traffic) as one of key equipment, have
The title of " heart " of city rail vehicle.When implementing accurately to control to traction convertor, the logic control function phase of DCU is when weight
Will, the critical function of trailer system management and communication is carry, directly affect function, the safety and efficiency of traction convertor.Cause
This, the logical control program to DCU carries out the important hand that software test also becomes guarantee software quality, raising DCU reliabilities
Section.
Existing DCU automatization test systems as depicted in figs. 1 and 2, including automatic test module, communication interface mould
Block, test environment drive module.Wherein, automatic test module：For providing the exploitation of test script, performing, test report
The function of generation.Communication interface module：Interacted for the data flow between automatic test module and test environment drive module,
Complete test output signal assignment send, and Test input signal feedback reception.Test environment drive module：For simulating
The control object and external environment condition object of measurand DCU, and complete the input/output signal of automatic test simulation and be tested
Signal condition conversion and data interaction between digital quantity, the analog signalses of the actual external interfaces of object DCU.
The test process of whole automatization test system is as follows：1st, tester develops according to the testing requirement of tested DCU
Test script, and be input into automatic test module and perform test.2nd, automatic test module parsing test script, analysis test
The input/output signal of simulation signal characteristic (including signal index：The essential informations such as signal value), forced by testing output
Signaling interface, test input feedback signal interface realize the data interaction with communication interface module.3rd, communication interface module is maintained
Real-time communication with automatic test module and test environment drive module is connected, the input/output signal according to test simulation
The feedback reception of relevant information, the assignment transmission of completion test output signal, and Test input signal.4th, test environment drives mould
Block is attached with tested DCU by actual entrucking external interface, the control object and external environment condition pair of simulation measurand DCU
As completing the input/output signal and the digital quantity of the actual external interfaces of tested DCU of automatic test simulation, analog signalses
Signal condition is changed and data exchange process.5th, after test script is performed and terminated, automatic test module is according to test simulation
Input/output signal comprehensive descision test result, forms test report.
But, because there is incidence relation between multiple test signals for being related in automatic test, existing automation is surveyed
There is sporadic asynchrony phenomenon in signal assignment procedure in test system, will cause sporadic mistake, automatic so as to cause
Change the insincere of test result, it is impossible to meet the automatic test demand to DCU equipment.
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
Plant good stability, the signal synchronization assignment method and device of reliability rail traffic vehicles automatic test high.
In order to solve the above technical problems, technical scheme proposed by the present invention is：A kind of rail traffic vehicles automatic test
Signal synchronization assignment method, including：
S1. first end produces test signal and the control signal, the test signal to include at least synchronous hair of two-way needs
The signal for sending, after the first end is by test signal packing encapsulation, and the control signal synchronized transmission is to the second end；
S2. the second end is by decoding by the test signal Zhong Ge roads signals revivification after the packing encapsulation, and according to institute
State control signal and export each road signal.
As a further improvement on the present invention, the signal for needing synchronized transmission includes index signal and value signal.
As a further improvement on the present invention, according to the difference of signal type, the first end is produced by independent port
The different types of test signal of life and control signal.
As a further improvement on the present invention, the test after the first end is encapsulated the packing by way of queue
Signal is sent to the second end.
As a further improvement on the present invention, the first end is the automation of rail traffic vehicles automatic test device
Test module end, second end is the communication interface module end of rail traffic vehicles automatic test.
A kind of signal synchronization valuator device of rail traffic vehicles automatic test, including：First end equipment and the second end
Equipment；First end equipment includes at least two-way needs for producing test signal and control signal, the test signal
The signal of synchronized transmission, after the first end is by test signal packing encapsulation, and the control signal synchronized transmission is to the
Two ends；Second end equipment is used for the test signal Zhong Ge roads signals revivification after the packing encapsulation by decoding, and
Each road signal is exported according to the control signal.
As a further improvement on the present invention, first end equipment includes encoder, and the encoder is used for will be described
Test signal carries out packing encapsulation.
As a further improvement on the present invention, second end equipment includes decoder, for being sent to the first end equipment
Packing encapsulation after test signal reduced.
As a further improvement on the present invention, the encoder produces test signal and control letter with first end equipment
Number passage correspond；The decoder of second end equipment and the encoder of the first end equipment are corresponded.
As a further improvement on the present invention, the encoder of one-to-one first end equipment and the second end equipment
Assignment queue is provided between decoder, for the test signal that first end device coding device is exported to be sent to the second end equipment
Decoder.
As a further improvement on the present invention, first end equipment is oneself of rail traffic vehicles automatic test device
Dynamicization test module end equipment, second end equipment sets for the communication interface module end of rail traffic vehicles automatic test
It is standby.
Compared with prior art, the advantage of the invention is that：
1st, the present invention is sent to the second end by after encapsulation that the test signal of first end is packed, by the second end decoded back
Into original test signal, multiple test signals are eliminated in synchronous assignment procedure because stationary problem may caused assignment mistake
By mistake, the stability and reliability of test signal assignment are improve.
2nd, this invention simplifies synchronizing process complexity, synchronous difficulty is reduced.
3rd, device of the invention only need on the basis of original device increase encoder and decoder, it is necessary to input into
This is small.
Brief description of the drawings
Fig. 1 is DCU automatization test systems block diagram in the prior art.
Fig. 2 is DCU automatization test systems structure and assignment procedure schematic diagram in the prior art.
Fig. 3 is assignment mistake schematic diagram in DCU automatization test systems in the prior art.
Fig. 4 is specific embodiment of the invention assignment method schematic flow sheet.
Fig. 5 is specific embodiment of the invention DCU automatization test systems structure and assignment procedure 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.
In the automatic test course of DCU equipment, there is sporadic mistake for existing automatization test system, grind
Hair personnel carried out it is substantial amounts of research and analyse, determine the reason for this is sporadic wrong be automatic test module by test signal and
During control signal synchronized transmission to communication interface modules, assignment mistake is caused due to synchronously inaccurate.Test signal includes index
Signal and value signal.Found by analysis, in automatization test system, the function of communication interface module is very crucial, affects whole
The correctness and stability of signal assignment in individual automatic test course, determine signal assignment link in automatization test system
Reliability.Communication interface module can functionally be divided into two large divisions：Test output signal assignment sending link, test are defeated
Enter signal feedback reception link.1st, test output signal assignment sending link：Worked according to polling cycle, it is desirable to which polling cycle is small
In the external interface signals period of change (generally 10ms) of measurand DCU, the output of real-time reception automatic test module
(i.e. digital quantity assignment opens mark (control signal), digital quantity signal index (index signal), digital quantity letter to six interface signals
Number value (value signal), analog quantity assignment open mark (control signal), analog signalses index (index signal), analog signalses
Value (value signal)), and according to interrelated logic, realize " switch " control assignment procedure.In this manner, to digital quantity, analog quantity
Signal provides a bars assignment passage respectively, and the passage is opened mark and controlled by assignment.2nd, Test input signal feedback connects
Receive link：Worked according to polling cycle, it is desirable to external interface signals period of change (of the polling cycle less than measurand DCU
As be 10ms), the test input feedback signal of real-time reception test environment drive module output and is forwarded to automatic test mould
Block, criterion and result for testing feedback signal judge.Control signal is used to control whether to carry out assignment to corresponding signal,
Represented with 1 and 0,1 represents assignment, and 0 represents not assignment.Index signal and value signal are a pair of correlation signals, and index signal is one
It is individual that value signal is the concrete numerical value for treating assertive signal with signal name one-to-one unique mark, digital quantity with 0 (False),
1 (True) represents that analog quantity correspondence numerical value is represented.
In the present embodiment, each treats the digital quantity or analog signalses of assignment in automatization test system, can be with
Uniquely described with one group of control variables, it is as shown in the table,
| Signal name | Signal is indexed | Signal value |
| Main circuit breaker state | 0 | 1 |
| Charging contactor state | 1 | 0 |
| Net pressure | 2 | 1500 |
| Medium voltage | 3 | 1300 |
1st, main circuit breaker state is effective, corresponding control variables group (0,1)；2nd, charging contactor state is invalid, corresponding
Control variables group (1,0)；3rd, net pressure 1500V, corresponding control variables group (2,1500)；4th, medium voltage 1300V, corresponding control
Set of variables (3,1300) processed.
Researcher is analyzed by lot of experiments and drawn, the automatic test course of DCU equipment is to odd row signal assignment
During mistake as shown in figure 3, by taking digital quantity assignment as an example, it is assumed that automatic test module is continuously carried out to signal 1,2
Assignment operation, under normal circumstances, polling cycle of the communication interface module according to setting, it may appear that the assignment operation of multiple signals 1,
Be followed by the assignment operation of signal 2 (it is assumed herein that automatic test module by signal 1, in the duration of 2 assignment, communication interface
Module can carry out assignment twice).
When there is signal assignment mistake, it is possible to because digital quantity signal index, incomplete of digital quantity signal value
With the abnormal saltus step for causing signal 2 or signal 1 occur, as shown in Figure 3.Signal in Fig. 3 in overstriking black box is jumped for abnormal
Varying signal, the phenomenon will cause the signal assignment in automatic test course to malfunction.
By it is substantial amounts of research and analyse determination assignment malfunction the reason for after, as shown in Figure 4 and Figure 5, the rail of the present embodiment
The signal synchronization assignment method of road vehicular traffic automatic test, including：S1. first end produces test signal and control signal,
Test signal includes that at least two-way needs the signal of synchronized transmission, after first end is by test signal packing encapsulation, and control letter
Number synchronized transmission is to the second end；S2. the second end by decoding will pack encapsulation after test signal Zhong Ge roads signals revivification, and
Each road signal is exported according to control signal.
In the present embodiment, it is necessary to the signal of synchronized transmission includes index signal and value signal.According to signal type not
Together, first end produces different types of test signal and control signal by independent port.First end is by way of queue
Test signal after encapsulation of packing is sent to the second end.First end is the automation of rail traffic vehicles automatic test device
Test module end, the second end is the communication interface module end of rail traffic vehicles automatic test.In the present embodiment, queue is
Fifo queue.
Packing encapsulation (coding) is carried out to test signal can flexibly be selected with the method for decoding, in the present embodiment, be passed through
Following manner is encoded and decoded.In the present embodiment, it is assumed that analog signalses, digital quantity signal are with control variables group (letter
Number index, signal value) it is described, and signal is indexed, signal value is 16 unsigned integer types (i.e. UINT types, model
Enclose 0~65535), cataloged procedure can be represented by following coding formula：Encoded radio=signal index<<16+ signal values (<<Table is moved to left
Computing, moves to left 16).Decoding process can be represented by following decoding formula：Signal value=encoded radio, signal index=
(encoded radio>>16)&0xFFFF(>>Table shift right operation, moves to right 16, the step-by-step of ＆ tables and computing).Such as to net pressure 1500V (correspondence letters
Number index 2, signal value 1500) encoded, decoding process it is as follows：The control variables group (2,1500) of original signal, encoder is pressed
Coding formula is encoded, and obtains encoded radio=2<<16+1500=132572, decoder is decoded according to encryption formula, is obtained
To signal index=(132572>>16) ＆＆0xFFFF=2, signal value=132572＆0xFFFF=1500.Solved by the coding
Code method, it is ensured that for arbitrary signal, the uniqueness of the result of encoding and decoding.In the present embodiment, by of the invention
Method, the synchronous (control signal of 2 signals is reduced to by original 3 signals synchronous (control signal, index signal and value signal)
With the test signal of packing encapsulation), the synchronous complexity and difficulties of signal are reduced, improve stability, the accuracy of assignment
And reliability, it is ensured that the quality of tested DCU automatic tests.
As shown in figure 5, the signal synchronization valuator device of the rail traffic vehicles automatic test of the present embodiment, including：The
One end equipment and the second end equipment；First end equipment includes at least for producing test signal and control signal, test signal
Two-way needs the signal of synchronized transmission, and after first end is by test signal packing encapsulation, and control signal synchronized transmission is to the second end；
The test signal Zhong Ge roads signals revivification that second end equipment is used for after decoding the encapsulation that will pack, and it is defeated according to control signal
Chu Ge roads signal.
In the present embodiment, the first end equipment includes encoder, and encoder is used to for test signal to carry out packing encapsulation.The
Two end equipments include decoder, and the test signal after the packing for being sent to the first end equipment is encapsulated is reduced.Encoder
The passage for producing test signal and control signal with the first end equipment is corresponded；The decoder of the second end equipment sets with first end
Standby encoder is corresponded.It is provided between the encoder of one-to-one first end equipment and the decoder of the second end equipment
Assignment queue, for the test signal that first end device coding device is exported to be sent to the decoder of the second end equipment.First end
Equipment is the automatic test module end equipment of rail traffic vehicles automatic test device, and the second end equipment is rail vehicle
The communication interface module end equipment of automatic test.
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 (11)
1. a kind of rail traffic vehicles automatic test signal synchronization assignment method, it is characterised in that including：
S1. first end produces test signal and control signal, and the test signal includes that at least two-way needs synchronized transmission
Signal, after the first end is by test signal packing encapsulation, and the control signal synchronized transmission is to the second end；
S2. the second end is by decoding by the test signal Zhong Ge roads signals revivification after the packing encapsulation, and according to the control
Each road signal of signal output processed.
2. rail traffic vehicles automatic test according to claim 1 signal synchronization assignment method, it is characterised in that：
The signal for needing synchronized transmission includes index signal and value signal.
3. rail traffic vehicles automatic test according to claim 2 signal synchronization assignment method, it is characterised in that：
According to the difference of signal type, the first end produces different types of test signal and control signal by independent port.
4. rail traffic vehicles automatic test according to claim 2 signal synchronization assignment method, it is characterised in that：
The first end is sent to the second end the test signal after the packing encapsulation by way of queue.
5. rail traffic vehicles automatic test according to claim 4 signal synchronization assignment method, it is characterised in that：
The first end is the automatic test module end of rail traffic vehicles automatic test device, and second end is track traffic
The communication interface module end of vehicle automatic test.
6. a kind of rail traffic vehicles automatic test signal synchronization valuator device, it is characterised in that including：First end equipment
With the second end equipment；First end equipment includes at least for producing test signal and control signal, the test signal
Two-way needs the signal of synchronized transmission, after the first end is by test signal packing encapsulation, and the control signal synchronization
Send to the second end；The test signal Zhong Ge roads signal that second end equipment is used for after decoding encapsulates the packing
Reduction, and each road signal is exported according to the control signal.
7. rail traffic vehicles automatic test according to claim 6 signal synchronization valuator device, it is characterised in that：
First end equipment includes encoder, and the encoder is used to for the test signal to carry out packing encapsulation.
8. rail traffic vehicles automatic test according to claim 7 signal synchronization valuator device, it is characterised in that：
Second end equipment includes decoder, and the test signal after the packing for being sent to the first end equipment is encapsulated is reduced.
9. rail traffic vehicles automatic test according to claim 8 signal synchronization valuator device, it is characterised in that：
The encoder produces the passage of test signal and control signal to correspond with first end equipment；Second end equipment
Decoder and the first end equipment encoder correspond.
10. the signal synchronization valuator device of rail traffic vehicles automatic test according to claim 9, its feature exists
In：Assignment queue is provided between the encoder and the decoder of the second end equipment of one-to-one first end equipment, is used
Sent to the decoder of the second end equipment in by the test signal that first end device coding device is exported.
The signal synchronization valuator device of the 11. rail traffic vehicles automatic test according to any one of claim 6 to 10,
It is characterized in that：First end equipment is the automatic test module end equipment of rail traffic vehicles automatic test device,
Second end equipment is the communication interface module end equipment of rail traffic vehicles automatic test.
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| CN201710016695.6A CN106708021B (en) | 2017-01-10 | 2017-01-10 | Signal synchronous assignment method and device for rail transit vehicle automatic test |
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|---|---|---|---|
| CN201710016695.6A CN106708021B (en) | 2017-01-10 | 2017-01-10 | Signal synchronous assignment method and device for rail transit vehicle automatic test |
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| CN106708021B CN106708021B (en) | 2020-03-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116737538A (en) * | 2023-04-13 | 2023-09-12 | 武汉铁路职业技术学院 | Automatic software testing system and method for rail transit traction transmission control unit |
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