CN100493005C - Communication network test system for entire car of fuel cell car based on TTCAN - Google Patents
Communication network test system for entire car of fuel cell car based on TTCAN Download PDFInfo
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- CN100493005C CN100493005C CNB2007100999557A CN200710099955A CN100493005C CN 100493005 C CN100493005 C CN 100493005C CN B2007100999557 A CNB2007100999557 A CN B2007100999557A CN 200710099955 A CN200710099955 A CN 200710099955A CN 100493005 C CN100493005 C CN 100493005C
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- 238000004891 communication Methods 0.000 title claims abstract description 57
- 239000000446 fuel Substances 0.000 title claims abstract description 39
- 238000012360 testing method Methods 0.000 title claims abstract description 34
- SAZUGELZHZOXHB-UHFFFAOYSA-N acecarbromal Chemical compound CCC(Br)(CC)C(=O)NC(=O)NC(C)=O SAZUGELZHZOXHB-UHFFFAOYSA-N 0.000 title 1
- 230000006870 function Effects 0.000 claims description 11
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Abstract
The invention is used for making on-line test and estimation for each component controller in the communication network of fuel battery car. The system comprises an upper-computer, a CAN card, a fuel CAN network simulator with CAN interface and tested component controllers. The CAN interface of said upper-computer CAN card is connected to the lower-computer CAN network via CAN cable; the CAN network simulator of fuel battery car is connected to the CAN network via the CAN cable; the CAN interface of said tested component is connected to the CAN network. The invention uses TTCAN technology, and combines LabVIEW and Motorola 32bit single-chip to design the solution provided thereof.
Description
Technical field
A kind of entire car of fuel cell car communication network test macro based on TTCAN is applicable to the online detection and the assessment of each parts controller of entire car of fuel cell car communication network, belongs to industry spot supervising device technical field.
Background technology
Fuel cell car adopts the dcs structure, and each parts all has independently controller, and each controller and entire car controller carry out energy management and coordinate control whole system by the TTCAN network.It is big that the CAN communications protocol has satisfied the system data exchange capacity, real-time, the characteristics that reliability requirement is high.
In the development process of whole-control system, need the agreement communications protocol, to guarantee the normal operation of CAN communication.Sometimes also need revise for the sequential and the content of agreement in the development phase, this just requires a powerful network simulation and test macro, before car load network typing, carry out the test of hardware at ring for the communication quality of parts controller and entire car controller.
The CAN network test system all is towards single controller traditionally, at traditional C AN protocol development.In traditional CAN agreement, the data division in the signal frame is fixed as 8, and the triggering of signal is based on incident, real-time a little less than.TTCAN is the communications protocol that is based upon a kind of Time Triggered on the traditional C AN agreement.Compare traditional CAN agreement, TTCAN has real-time height, good reliability, and data volume is big, characteristics such as data bits is variable in the signal frame.The TTCAN agreement is fit to big, the demanding demand of real-time of fuel-cell vehicle communication data amount.
Traditional CAN network test system all adopts the method for off-line analysis, and the engineering staff need just can finish the analysis of CAN signal by other softwares or manual operation, the demand that is not suitable for debugging onboard after using a large amount of CAN signals of CAN acquisition hardware collection.Native system is gathered CAN with analysis and is integrated in the software, and has realized the automation function of gathering at any time, analyzing at any time.Than traditional C AN test macro, the present invention is simple in structure, can satisfy the demand of engineering site on-line testing, can save the development time and the development cost of CAN communications protocol.
The epigynous computer section of test macro adopts software developments such as LabVIEW, proves to be true after interrogation the function of existing data acquisition by the CAN cartoon, and the signal of gathering is handled in real time, obtains the assessment result of CAN communication quality.Based on the data analysis algorithm of desktop computer and notebook, can utilize the powerful data-handling capacity of computer, in very short time, finish collection, record, statistics and the analysis of the communication sequential of CAN signal.Native system can be realized the quick online evaluation of CAN communication quality.The slave computer of test macro is partly encircling simulated environment by the car load network hardware that independently developed fuel cell car load CAN network simulation program and MPC561 automobile controller are formed, and it can be with 1 * 10
-6The precision simulation car load network communication of s.The hardware-in-loop simulation environment adopts communications protocol and the communication sequential identical with real vehicle, can simulate the network load of car load communication fully.
Summary of the invention
The objective of the invention is at the structure of present car load TTCAN communication network of new generation and new design requirement based on the TTCAN communications protocol, provide a kind of new entire car of fuel cell car communication network test macro, with the exploitation needs of the controller that satisfies each parts of fuel-cell vehicle based on the TTCAN bus.
Entire car of fuel cell car communication network test macro based on the TTCAN bus proposed by the invention comprises host computer and slave computer two parts.Epigynous computer section comprises host computer and the CAN2.0 card that has PCI slot or PCMCIA slot; The slave computer part is made up of the fuel cell car load CAN network simulator of band CAN interface and the tested parts controller of band CAN interface.
Host computer can be desktop computer, notebook, industrial computer;
CAN card model can be NI-CAN, NI-CAN/2, NI PCMCIA-CAN, NI PCMCIA-CAN/2;
Slave computer car load CAN network simulator can be Motorola MPC561, MPC555, MPC563.
The present invention proposes a kind of fuel cell communication network test macro, it is characterized in that based on TTCAN:
A. by slave computer analog fuel battery car car load TTCAN network environment, finish slave computer and the signal testing of being with the tested parts controller of CAN interface by host computer, the annexation of described host computer, slave computer and the tested parts controller of band CAN interface is as follows:
1. the CAN interface of the CAN card of host computer links to each other with slave computer CAN network by the CAN cable;
2. slave computer band CAN interface fuel cell car load CAN network simulator links to each other with slave computer CAN network by the CAN cable;
3. the CAN interface of the tested parts controller of band CAN interface links to each other with slave computer CAN network by the CAN cable.
B. the tested parts controller with the CAN interface inserts simulation TTCAN network, carries out communication with the slave computer signal simulator;
C. described described host computer has the TTCAN network signal test program based on the LabVIEW exploitation, and described program is carried out as follows:
1. behind the software startup, at first carry out initialization:
1) according to user's setting, the signal ID that tests, the initialization of agreement communication speed;
2) CAN is carried out initialization:
A), use copy editor's software to generate the signal configures file of TTCAN network configuration based on extensible markup language (XML) according to the tabulation of the signal ID in the procotol;
B) call CAN Task Init or CAN Task Init﹠amp; The Start order imports the configuration file that generates;
C) call Set Task Property order, configuration CAN communication speed is 250kbps;
2. call CAN Task Read order, adopt the Timestamped pattern, read CAN signal and timestamp;
3. signal and the timestamp thereof that receives carried out algebraic operation
1), calculates the time window of this each signal that circulates according to user configured trigger frame signal.The diagnostic accuracy of the scope that the scope of time window is stipulated by agreement, the fault distribution function that forward direction emulation obtains and expert system is determined;
2) according to the TTCAN procotol of importing, the tested frame for the user selects, carry out failure diagnosis:
A) according to the occurrence frequency of tested frame in the current demand signal array, occurrence frequency and existing this signal fault record of signal in the contrast agreement, calculate the failure rate that current demand signal repeats, and, judge whether current demand signal is in malfunction according to the threshold values of stipulating based on the diagnostic accuracy of expert system;
B) according to the time of occurrence section of tested frame in the current demand signal array, contrast is according to this array trigger frame sequential with based on the diagnostic accuracy of expert system and the official hour window draws the sequential fault conclusion that current demand signal meets diagnostic accuracy;
C) for occurrence frequency in a last signal array be 0 signal, calculate its disappearance number according to the TTCAN communications protocol;
1) signal of Boolean function in this signal array is repeated, the sequential fault changes into that measured signal disappearance number is added in each fault variable in a digital quantity and the last signal array, finishes the renewal of statistics;
1. sequential fault, repetition, the disappearance counting with each signal (comprising trigger frame, tested frame) counting, each signal is shown on the host computer screen;
2., so data are saved in hard disk if the user has selected " preservation data ":
2) signal ID and the timestamp with TTCAN trigger frame and tested frame merges in the file of the ASCII character form that deposits user's appointment in, separates with newline between per two signals;
3) if file size surpasses user specified value, then set up next file, sequence number is original file sequence number+1;
1. if the user has selected " display graphics ", so with the sequential of tested frame with respect to trigger frame, the mode by oscillogram is shown on the host computer screen;
2. check whether the user presses " stopping " button, if then change next step h over to, otherwise change b over to;
3. unload CAN card resource:
1) calls CAN Task Stop order, stop current C AN and send or the reception task;
2) call CAN Task Clear order, unloading taking for current C AN resource;
4. program stops, and after the user pressed the Close button, program withdrawed from.
Entire car of fuel cell car communication network test macro based on the TTCAN bus proposed by the invention by the exploitation to host computer, has been realized the test function based on the entire car of fuel cell car communication network of TTCAN.Native system can analog fuel battery car car load TTCAN network, and to network monitor in real time, function such as storage, online evaluation.Host computer is by monitoring, handle the signal of TTCAN network, obtained the transmission parameter information of signal on the network, the processing of algorithm by analysis, realized two functions: the one, each parts controller of forming the TTCAN network, the communication function of entire car controller are detected and assessment; The 2nd, to the test of TTCAN procotol of design.
Described host computer by calling the CAN card driver of Labview, reads the TTCAN signal on the simulation car load communication network in real time, and it is carried out signal estimation algorithm, and signal array quantity, erroneous frame quantity and the error rate are fed back to user interface in real time.After the signal array number reaches set point,, provide whether satisfactory conclusion of TTCAN network communication according to the statistical indicator of the error rate and time delay.
Described analog fuel battery car car load TTCAN network is meant based on the CAN procotol of Time Triggered (Time Triggered), is useful for the controller communication network of fuel-cell vehicle.The analog fuel battery car car load TTCAN network using controller MPC561 single-chip microcomputer identical with real vehicle is as the processor of network signal simulator, the peripheral hardware of CAN communication part is also identical with communication media, thereby on the meaning of CAN network communication and fuel cell real vehicle equivalence, the result who records on analog network can substitute the real vehicle test result.
The TTCAN protocol technology of uses advanced of the present invention has been realized a kind of entire car of fuel cell car communication network test macro in conjunction with LabVIEW and 32 microcomputer development platforms of Motorola MPC series, and its main effect has:
1.TTCAN the bus transfer rate height, real-time performance is good, and fuel cell finished automobile controller monitoring system process information ability is strengthened.
2. host computer can adopt desktop computer or notebook computer, and application places is flexible, is fit to research place or engineering site and uses.
3. adopt the program structure of optimizing, can under windows platform, realize the signal sequence certainty of measurement of 1 microsecond and be no more than 1 millisecond real-time processing cycle.
4. test program will be gathered with evaluation function and be integrated in one, and can finish on-line automatic assessment, and will be easy and simple to handle, can obtain test result then and there, the parts controller of engineering site CAN communication debugging and network-level, the test and the debugging of entire car controller.
5. test program is supported data recording function, compatible other off-line analysis methods.
6. utilized fuel cell car control system TTCAN network communication structure, the CAN sequential of parts is directly obtained from the TTCAN network, is received by PC, has alleviated the monitoring communication burden of entire car controller greatly.
Description of drawings
Fig. 1 is an entire car of fuel cell car communication network test system structure schematic diagram.
Fig. 2 is the workflow diagram of entire car of fuel cell car communication network test macro.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described further.
Figure 1 shows that entire car of fuel cell car communication network test system structure schematic diagram.The annexation of native system:
1. the CAN interface of the CAN card of host computer links to each other with slave computer CAN network by the CAN cable.
2. slave computer fuel cell car load CAN network simulator links to each other with slave computer CAN network by the CAN cable.
3. the CAN interface of tested parts links to each other with slave computer CAN network by the CAN cable.
Embodiment 1
Figure 1 shows that fuel cell finished automobile controller monitoring system structural representation.Host computer is a notebook computer that the CAN card is installed, and described CAN card model is NI PCMCIA-CAN/2; The slave computer signal simulation is finished by the controller that adopts the MPC555 single-chip microcomputer, this controller has 2 CAN modules, each CAN module has has 16 to receive the transmission data buffer zone, each all can independently generate interruption, wherein distribute 9 CAN data buffer zones to be used for fuel cell car load TTCAN network measuring system, send the CAN signal of each controller respectively, in order to simulation car load communication network.
Embodiment 2
Host computer adopts the desktop computer computer that the CAN card is installed, and described CAN card model is NI CAN/2; The slave computer signal simulation is finished by the controller that adopts the MPC561 single-chip microcomputer, this controller has 3 CAN modules, each CAN module has has 16 to receive the transmission data buffer zone, each all can independently generate interruption, wherein distribute 9 CAN data buffer zones to be used for fuel cell car load TTCAN network measuring system, send the CAN signal of each controller respectively, in order to simulation car load communication network.
Fig. 2 is the workflow of entire car of fuel cell car communication network test macro:
1. behind the software startup, at first carry out initialization:
1) according to user's setting, the signal ID that tests, the initialization of agreement communication speed;
2) CAN is carried out initialization:
A), use copy editor's software to generate the signal configures file of TTCAN network configuration based on extensible markup language (XML) according to the tabulation of the signal ID in the procotol;
B) call CAN Task Init or CAN Task Init﹠amp; The Start order imports the configuration file that generates;
C) call Set Task Property order, configuration CAN communication speed is 250kbps;
2. call CAN Task Read order, adopt the Timestamped pattern, read CAN signal and timestamp;
3. signal and the timestamp thereof that receives carried out algebraic operation:
1), calculates the time window of this each signal that circulates according to user configured trigger frame signal.The diagnostic accuracy of the scope that the scope of time window is stipulated by agreement, the fault distribution function that forward direction emulation obtains and expert system is determined;
2) according to the TTCAN procotol of importing, the tested frame for the user selects, carry out failure diagnosis:
A) according to the occurrence frequency of tested frame in the current demand signal array, occurrence frequency and existing this signal fault record of signal in the contrast agreement, calculate the failure rate that current demand signal repeats, and, judge whether current demand signal is in malfunction according to the threshold values of stipulating based on the diagnostic accuracy of expert system;
B) according to the time of occurrence section of tested frame in the current demand signal array, contrast is according to this array trigger frame sequential with based on the diagnostic accuracy of expert system and the official hour window draws the sequential fault conclusion that current demand signal meets diagnostic accuracy;
C) for occurrence frequency in a last signal array be 0 signal, calculate its disappearance number according to the TTCAN communications protocol;
3) signal of Boolean function in this signal array is repeated, the sequential fault changes into that measured signal disappearance number is added in each fault variable in a digital quantity and the last signal array, finishes the renewal of statistics;
4. sequential fault, repetition, the disappearance counting with each signal (comprising trigger frame, tested frame) counting, each signal is shown on the host computer screen;
5., so data are saved in hard disk if the user has selected " preservation data ":
1) signal ID and the timestamp with TTCAN trigger frame and tested frame merges in the file of the ASCII character form that deposits user's appointment in, separates with newline between per two signals;
2) if file size surpasses user specified value, then set up next file, sequence number is original file sequence number+1;
6. if the user has selected " display graphics ", so with the sequential of tested frame with respect to trigger frame, the mode by oscillogram is shown on the host computer screen;
7. check whether the user presses " stopping " button, if then change next step h over to, otherwise change b over to;
8. unload CAN card resource:
1) calls CAN Task Stop order, stop current C AN and send or the reception task;
2) call CAN Task Clear order, unloading taking for current C AN resource;
9. program stops, and after the user pressed the Close button, program withdrawed from.
Claims (4)
1, a kind of entire car of fuel cell car communication network test macro based on TTCAN is characterized in that this system comprises host computer and slave computer two parts;
Epigynous computer section comprises host computer, CAN2.0 card that has PCI slot or PCMCIA slot and the TTCAN network signal test program of developing based on LabVIEW;
Described TTCAN network signal test program based on the LabVIEW exploitation is realized as follows:
(1) behind the software startup, at first carry out initialization:
1) according to user's setting, the signal ID that tests, the initialization of agreement communication speed;
2) CAN is carried out initialization:
A), use copy editor's software to generate the signal configures file of TTCAN network configuration based on extensible markup language according to the tabulation of the signal ID in the procotol;
B) call CAN Task Init or CAN Task Init﹠amp; The Start order imports the configuration file that generates;
C) call Set Task Property order, configuration CAN communication speed is 250kbps;
(2) call CAN Task Read order, adopt the Timestamped pattern, read CAN signal and timestamp;
(3) signal and the timestamp thereof that receives carried out algebraic operation
1), calculates the time window of this each signal that circulates according to user configured trigger frame signal; The diagnostic accuracy of the scope that the scope of time window is stipulated by agreement, the fault distribution function that forward direction emulation obtains and expert system is determined;
2) according to the TTCAN procotol of importing, the tested frame for the user selects, carry out failure diagnosis:
A) according to the occurrence frequency of tested frame in the current demand signal array, occurrence frequency and existing this signal fault record of signal in the contrast agreement, calculate the failure rate that current demand signal repeats, and, judge whether current demand signal is in malfunction according to the threshold values of stipulating based on the diagnostic accuracy of expert system;
B) according to the time of occurrence section of tested frame in the current demand signal array, contrast is according to this array trigger frame sequential with based on the diagnostic accuracy of expert system and the official hour window draws the sequential fault conclusion that current demand signal meets diagnostic accuracy;
C) for occurrence frequency in a last signal array be 0 signal, calculate its disappearance number according to the TTCAN communications protocol;
3) signal of Boolean function in this signal array is repeated, the sequential fault changes into that measured signal disappearance number is added in each fault variable in a digital quantity and the last signal array, finishes the renewal of statistics;
(4) each signal-count, the sequential fault of each signal, repetition, the disappearance that will comprise the trigger frame and the frame that is triggered counted and is shown on the host computer screen;
(5) if the user has selected " preservation data ", so data are saved in hard disk:
1) signal ID and the timestamp with TTCAN trigger frame and tested frame merges in the file of the ASCII character form that deposits user's appointment in, separates with newline between per two signals;
2) if file size surpasses user specified value, then set up next file, sequence number is original file sequence number+1;
(6) if the user has selected " display graphics ", so with the sequential of tested frame with respect to trigger frame, the mode by oscillogram is shown on the host computer screen;
(7) check whether the user presses " stopping " button, if then change next step (8) over to, otherwise change step (2) over to;
(8) unloading CAN card resource:
1) calls CAN Task Stop order, stop current C AN and send or the reception task;
2) call CAN Task Clear order, unloading taking for current C AN resource;
(9) program stops, and after the user pressed the Close button, program withdrawed from;
Slave computer partly comprises the tested parts controller of fuel cell car load CAN network simulator, CAN cable and the band CAN interface of band CAN interface;
The CAN interface of the CAN card of host computer links to each other with slave computer CAN network by the CAN cable;
The fuel cell car load CAN network simulator of slave computer band CAN interface links to each other with slave computer CAN network by the CAN cable;
The CAN interface of the tested parts controller of band CAN interface links to each other with slave computer CAN network by the CAN cable;
The tested parts controller of band CAN interface inserts simulation TTCAN network, carries out communication with the fuel cell car load CAN network simulator of slave computer band CAN interface.
2, a kind of entire car of fuel cell car communication network test macro based on TTCAN according to claim 1 is characterized in that, described host computer is any in desktop computer, notebook or the industrial computer.
3, a kind of entire car of fuel cell car communication network test macro based on TTCAN according to claim 1 is characterized in that the model of described CAN card is NI-CAN, NI-CAN/2, NI PCMCIA-CAN, any among the NI PCMCIA-CAN/2.
4, a kind of entire car of fuel cell car communication network test macro based on TTCAN according to claim 1 is characterized in that, described slave computer car load CAN network simulator is any among Motorola MPC561, MPC555, the MPC563.
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| CN101520661B (en) * | 2009-02-27 | 2012-01-25 | 株洲南车时代电气股份有限公司 | Method and device for testing microcomputer control system of diesel locomotive |
| CN103558849B (en) * | 2013-11-18 | 2016-04-20 | 上汽通用五菱汽车股份有限公司 | A kind of method of pure electric automobile control strategy debugging and network test |
| CN105262656A (en) * | 2015-09-22 | 2016-01-20 | 南京航空航天大学 | Implementation method for time-triggered communication bus of aeroengine distributed control system |
| CN110109375A (en) * | 2019-05-15 | 2019-08-09 | 北京昱连科技有限公司 | A kind of Bus simulator system based on TTCAN communication module |
| CN111106989B (en) * | 2019-12-26 | 2020-10-20 | 国家计算机网络与信息安全管理中心 | Vehicle CAN bus protocol determining method and device |
| CN112362983A (en) * | 2020-10-10 | 2021-02-12 | 东风时代(武汉)电池系统有限公司 | Battery management system diagnosis method, upper computer and system |
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| 基于DSP的脉宽调制技术试验平台. 金英，潘再平，史浩.实验技术与管理，第21卷第2期. 2004 |
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