CN104881329B - A kind of method of battery assembly off-line test platform multithreading time synchronization - Google Patents
A kind of method of battery assembly off-line test platform multithreading time synchronization Download PDFInfo
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- CN104881329B CN104881329B CN201410069587.1A CN201410069587A CN104881329B CN 104881329 B CN104881329 B CN 104881329B CN 201410069587 A CN201410069587 A CN 201410069587A CN 104881329 B CN104881329 B CN 104881329B
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Abstract
The present invention is a kind of method of battery assembly off-line test platform multithreading time synchronization.Battery assembly off-line test platform generates checking signal by hardware and is supplied to battery assembly, while reading the data that battery assembly is acquired by CAN communication, judges whether battery assembly various functions are up to standard after comparing input/output data.And the signal generate line journey of battery assembly off-line test platform realizes that synchronous operation is extremely difficult with CAN communication thread, be easy to cause data comparison mistake, test result is unqualified；In view of the above problems, the present invention proposes a kind of method for synchronizing time；This method is：1. main thread creates signal generate line journey and CAN communication thread；2. signal generate line journey carries out initial synchronisation with CAN communication thread；3.CAN communication threads carry out data sampling by a kind of time warping method；4. main thread, according to being compared with CAN communication thread-data, obtains test result to signal generate line number of passes.
Description
Technical field
The invention belongs to vehicle electric field more particularly to a kind of battery assembly off-line test platform multithreading time synchronizations
Method.
Background technology
As the whole world is to energy saving and environmental consciousness enhancing, the development trend of pure electric automobile is increasing.Battery is total
At the critical component for being pure electric automobile, need to monitor it in real time.Whether meet reality for the function of battery assembly
It is required that, it is necessary to off-line test is carried out to it, to find the defect of battery assembly in time, accident occurs when vehicle being avoided to run.
Currently, battery assembly off-line test platform is detected battery assembly various functions using hardware in loop pattern, i.e. detection is flat
Platform generates checking signal by hardware and is supplied to battery assembly, while reading the data that battery assembly is acquired by CAN communication,
Judge whether battery assembly various functions are up to standard after comparison input/output data.And in battery assembly off-line test platform development
In the process, signal generate line journey realizes that synchronous operation is extremely difficult with CAN communication thread, be easy to cause data comparison mistake, examines
It is unqualified to survey conclusion；It is therefore proposed that a kind of effective multithreading method for synchronizing time is of great significance to solve this difficult point.
Also once there is the associated description to multithreading method for synchronizing time in having patent, it is such as entitled a kind of based on the time
The patent (patent No. ZL201310452463.7) of synchronous multi-Channels Data Acquisition, the patent provide a kind of same based on the time
The multi-Channels Data Acquisition of step carries out the multi-Channels Data Acquisition after time adjustment by VCO conditioning modules and carries out data
Acquisition, and by parallel data transmission between FPGA and processor, the data of sensor acquisition are preserved in memory, are passed through
The data for reading pin-saving chip carry out follow-up data processing or carry out data interaction by network interface and host computer, carry out
Position machine data processing.The patent (patent No. ZL200920085598.3) of entitled all-hardware time synchronizer, the patent carry
Go out a system being made of the multiple data acquisition devices being distributed, needs to configure one and receive reference clock source conversion output mark
The time synchronism apparatus of quasi- clock synchronization signal, for the clock of each device in system to be consistent；The patent uses hardware realization
The decoding of time signal and coding, the accurate compensation of selection and switching and the delay of a reference source；Hardware include motherboard, power supply insert
Part, optical fiber plug-in unit, master clock plug-in unit, punctual plug-in unit and at least one extension output inserter；Each plug-in unit is connected with motherboard, passes through mother
Plate carries out signal and transmits and power supply supply.Entitled overhead line fast fault locating method and device based on time synchronization are (specially
Profit ZL201110438732.5), which is adopted by several distributed data acquisition units being arranged on distribution overhead line
The current signal that the voltage and each branch of distribution overhead line are acquired with Time synchronization technique, by data of the acquisition with time tag
It passes main website back and carries out operation, judge out of order branch, show the location information of fault section and the malfunction of circuit, fill
It sets and is made of distributed data acquisition unit, time reference unit, communication system, main station system, the present apparatus utilizes this method
Can be with the fault section of automatic decision supply line, and the location information of fault section is provided, in particular improve single-phase earthing
The accuracy rate of breakdown judge can substitute the Little Current Ground Connection System of substation, can reduce scope of power outage, shortening circuit is robbed
The time is repaiied, the power supply reliability of power supply system is improved.
Compared with above-mentioned patent, realize that the time of multithreading is same by development time synchronizing device in above-mentioned patent
Step, and traditional time synchronism apparatus realizes the decoding of clock source signals, the selection of a reference source and output letter using microprocessor
Number coding, exist and be easily disturbed, delay the shortcomings of being difficult to accurate compensation.Dress is synchronized using the development time in above-mentioned patent simultaneously
It sets, increases the complexity of system, also improve cost of manufacture, result in waste of resources.Under battery assembly described in this patent
Line detection platform carries out the time synchronization of multithreading using PC machine system time, has higher reliability and stability.
Invention content
The present invention is a kind of method of battery assembly off-line test platform multithreading time synchronization, when by with PC machine system
Between be aligned, so that the multiple threads of battery assembly off-line test platform is realized synchronous operation, to reach the accurate nothing of off-line test platform
That misses is detected battery assembly various functions.
The present invention proposes that a kind of method of battery assembly off-line test platform multithreading time synchronization, the multithreading time are same
Step is a kind of control strategy in battery assembly off-line test platform, main to realize to signal generate line journey and CAN communication thread
Synchronous operation, so as to main thread carry out data comparison；It includes the following steps：Main thread creates signal generate line journey and CAN
Communication thread；Signal generate line journey carries out initial synchronisation with CAN communication thread；CAN communication thread passes through a kind of time warping side
Method carries out data sampling；Finally, main thread obtains knot to signal generate line number of passes according to being compared with CAN communication thread-data
By.
Description of the drawings
Fig. 1 is a kind of principle of the method for battery assembly off-line test platform multithreading time synchronization proposed by the present invention
Figure.
Fig. 2 is that multithreading initial launch synchronizes schematic diagram in the present invention.
Fig. 3 is CAN communication module time warping data sampling method schematic diagram in the present invention.
Specific implementation mode
Below in conjunction with attached drawing, the invention will be further described.
As shown in Fig. 1, the method for a kind of battery assembly off-line test platform multithreading time synchronization proposed by the present invention
Principle be：Main thread creates signal generate line journey and CAN communication thread first；Signal generate line journey and CAN communication line later
Cheng Jinhang initial synchronisations；Again, CAN communication thread carries out data sampling by a kind of time warping method；Finally, main thread pair
Signal generate line number of passes evidence is compared with CAN communication thread-data, it was therefore concluded that.It is as follows：
1. main thread creates signal generate line journey and CAN communication thread；Signal generate line journey is total for providing detection battery
At the physical signal needed for each function；CAN communication thread is used to receive the data for the signal generate line journey that battery assembly is acquired.
2. signal generate line journey carries out initial synchronisation with CAN communication thread；Synchronous method is that two threads wait for PC machine simultaneously
Next second system time, when next second system time arrives, then bring into operation each operating mode respectively, realizes initial synchronisation.
3.CAN communication threads carry out data sampling by a kind of time warping method；The method of sampling is to be generated according to signal
The data variation operating mode of thread collects intermediate point using time warping method, and avoids the data variation that signal generates operating mode
Critical point.
4. main thread compares signal generate line number of passes evidence with CAN communication thread-data, and flat by human-computer interaction
The verification result of the variation and battery system of each item data of platform interface real-time display system, and test data is recorded and preserves,
Obtain the test result of battery assembly various functions.
Attached drawing 2 synchronizes for multithreading initial launch；After main thread creates signal generate line journey and CAN communication thread, signal
There are a time difference Δ T between generation thread and CAN communication thread, and in order to allow two threads to realize, initial launch synchronizes, this is specially
Profit is aligned, the signal generate line journey stand-by period is using two threads lower second time of waiting system simultaneously with PC machine system time
T1, CAN communication thread latency are T2, and there are relational expressions between T1 and T2 | T1-T2 |=Δ T；When lower second system of system
Time arrives, then bring into operation each operating mode respectively, realizes initial synchronisation.
Attached drawing 3 is CAN communication module time warping data sampling method；It is a setting operating condition that signal, which generates operating mode,
Within T1, T2, T3, T4 each period, respectively unlike signal value exports；To avoid CAN communication floor data sampled acquisition from arriving
The critical point of signal value variation causes data comparison to malfunction, and this patent is used when time arrival T1/2, T2/2, T3/2, T4/2 are each
It when point, carries out data sampling and stores, collect intermediate point, and avoid the data variation critical point that signal generates operating mode.
Claims (5)
1. a kind of method of battery assembly off-line test platform multithreading time synchronization, which is battery assembly
A kind of control strategy in off-line test platform, the main synchronous operation realized to signal generate line journey and CAN communication thread, with
Just main thread carries out data comparison；It includes the following steps：First, main thread creates signal generate line journey and CAN communication thread；
Secondly, signal generate line journey is made to carry out initial synchronisation with CAN communication thread using time PC machine second；Again, CAN communication thread is logical
Cross a kind of time warping method progress data sampling；Finally, main thread is to signal generate line number of passes evidence and CAN communication thread-data
It is compared, it was therefore concluded that.
2. a kind of method of battery assembly off-line test platform multithreading time synchronization according to claim 1, feature
It is：Main thread creates signal generate line journey and CAN communication thread；Signal generate line journey is for providing detection each work(of battery assembly
Physical signal needed for energy；CAN communication thread is used to receive the data for the signal generate line journey that battery assembly is acquired.
3. a kind of method of battery assembly off-line test platform multithreading time synchronization according to claim 1, feature
It is：Signal generate line journey carries out initial synchronisation with CAN communication thread；Synchronous method is that two threads wait for PC machine lower second simultaneously
System time, when next second system time arrives, then bring into operation each operating mode respectively, realizes initial synchronisation.
4. a kind of method of battery assembly off-line test platform multithreading time synchronization according to claim 1, feature
It is：CAN communication thread carries out data sampling by a kind of time warping method；The method of sampling is according to signal generate line journey
Data variation operating mode collects intermediate point using time warping method, and the data variation for avoiding signal generation operating mode is critical
Point.
5. a kind of method of battery assembly off-line test platform multithreading time synchronization according to claim 1, feature
It is：Main thread is to signal generate line number of passes according to the boundary for comparing with CAN communication thread-data, and passing through man-machine interactive platform
The verification result of the variation and battery system of each item data of face real-time display system, and test data is recorded and preserves, it obtains
The test result of battery assembly various functions.
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Citations (5)
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| CN101846728A (en) * | 2010-05-31 | 2010-09-29 | 重庆长安汽车股份有限公司 | Incoming inspection device of power battery for hybrid electric vehicle and inspection method |
| CN201616004U (en) * | 2009-05-11 | 2010-10-27 | 武汉国电武仪电力自动化设备有限公司 | All-hardware time synchronizer |
| CN102590700A (en) * | 2011-12-23 | 2012-07-18 | 山东电力集团公司淄博供电公司 | Method and device for quickly locating faults of overhead line on basis of time synchronization |
| US8412974B2 (en) * | 2009-11-13 | 2013-04-02 | International Business Machines Corporation | Global synchronization of parallel processors using clock pulse width modulation |
| CN103488112A (en) * | 2013-09-29 | 2014-01-01 | 成都天奥测控技术有限公司 | Multichannel data acquisition instrument based on time synchronization |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201616004U (en) * | 2009-05-11 | 2010-10-27 | 武汉国电武仪电力自动化设备有限公司 | All-hardware time synchronizer |
| US8412974B2 (en) * | 2009-11-13 | 2013-04-02 | International Business Machines Corporation | Global synchronization of parallel processors using clock pulse width modulation |
| CN101846728A (en) * | 2010-05-31 | 2010-09-29 | 重庆长安汽车股份有限公司 | Incoming inspection device of power battery for hybrid electric vehicle and inspection method |
| CN102590700A (en) * | 2011-12-23 | 2012-07-18 | 山东电力集团公司淄博供电公司 | Method and device for quickly locating faults of overhead line on basis of time synchronization |
| CN103488112A (en) * | 2013-09-29 | 2014-01-01 | 成都天奥测控技术有限公司 | Multichannel data acquisition instrument based on time synchronization |
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Effective date of registration: 20220507 Address after: 101100 building 24, yard 2, huanke Middle Road, Jinqiao Science and technology industrial base, Zhongguancun Science and Technology Park, Tongzhou District, Beijing Patentee after: Rosedale automotive trim design (Beijing) Co.,Ltd. Patentee after: Rosedale intelligent automobile (Chongqing) Co.,Ltd. Address before: Chongqing University of Posts and telecommunications, Chongwen Road, Nan'an District, Chongqing 400065 Patentee before: CHONGQING University OF POSTS AND TELECOMMUNICATIONS |
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Correction item: Patentee|Address|Patentee Correct: Chongqing University of Posts and Telecommunications|Chongqing University of Posts and telecommunications, Chongwen Road, Nan'an District, Chongqing 400065 False: Rosedale automotive trim design (Beijing) Co.,Ltd.|101100 building 24, yard 2, huanke Middle Road, Jinqiao Science and technology industrial base, Zhongguancun Science and Technology Park, Tongzhou District, Beijing|Rosedale intelligent automobile (Chongqing) Co.,Ltd. Number: 20-01 Volume: 38 |
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Effective date of registration: 20220530 Address after: 101100 building 24, yard 2, huanke Middle Road, Jinqiao Science and technology industrial base, Zhongguancun Science and Technology Park, Tongzhou District, Beijing Patentee after: Rosedale automotive trim design (Beijing) Co.,Ltd. Address before: Chongqing University of Posts and telecommunications, Chongwen Road, Nan'an District, Chongqing 400065 Patentee before: CHONGQING University OF POSTS AND TELECOMMUNICATIONS Effective date of registration: 20220530 Address after: 401121 No. 22, Jinyu Avenue, Liangjiang New Area, Yubei District, Chongqing (floor 3, building 9, Jintai Intelligent Industrial Park) Patentee after: Rosedale intelligent automobile (Chongqing) Co.,Ltd. Address before: 101100 building 24, yard 2, huanke Middle Road, Jinqiao Science and technology industrial base, Zhongguancun Science and Technology Park, Tongzhou District, Beijing Patentee before: Rosedale automotive trim design (Beijing) Co.,Ltd. |
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