CN201937613U - Remote-controlled controller area network (CAN) bus test device - Google Patents
Remote-controlled controller area network (CAN) bus test device Download PDFInfo
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- CN201937613U CN201937613U CN2010206320034U CN201020632003U CN201937613U CN 201937613 U CN201937613 U CN 201937613U CN 2010206320034 U CN2010206320034 U CN 2010206320034U CN 201020632003 U CN201020632003 U CN 201020632003U CN 201937613 U CN201937613 U CN 201937613U
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Abstract
The utility model discloses a remote-controlled controller area network (CAN) bus test device, which is characterized in that: a main control computer selects commands to a bus interface controller through a serial port sending interface to control the on and off of a bus interface of a load to be tested and a CAN bus, and the main control computer sends commands to a bus monitoring computer through the transmission control protocol/Internet protocol (TCP/IP) protocol to control the work of a bus analyzer and a bus oscilloscope; and the data and commands sent by the bus are transmitted to the bus monitoring computer after being received by the bus analyzer and the bus oscilloscope, and the data required by the main control computer and the relevant statistic information of the CAN bus are transferred to the main control computer by the bus monitoring computer. In the remote-controlled controller area network (CAN) bus test device, the manpower demand is reduced, and thus, the limitation of the field factor and the like is eliminated.
Description
Technical field
The present invention relates to a kind of testing apparatus of CAN bus.
Background technology
At present, CAN bus test method commonly used is respectively CAN bus analysis instrument CANcaseXL to be connected with computer with the end of CAN bus oscilloscope CANscope, the other end directly inserts the CAN bus, and utilizes software kit CANalyzer and CANscope directly to carry out the detection of CAN bus message and physical characteristic.Do the information that to analyze accurately on the CAN bus like this, thereby finish test job total linear load.But this method has some shortcomings again: at first, use CAN bus analysis instrument CANcaseXL and CAN bus oscilloscope CANscope that common method is just isolated, it is difficult among the system of being integrated in, bus analysis instrument and the oscillographic advantage of bus can not be integrated among the test macro, thereby can not realize its application in complicated test macro and complex network level; Secondly, the computer of connecting bus analyzer CANcaseXL and bus oscilloscope CANscope can not autonomous operation, needs people's operation, can bring difficulty to test job; Once more, in test process, in case be subjected to the effects limit in place, make the computer of connecting bus analyzer CANcaseXL and bus oscilloscope CANscope be forced to arranged apart with other computers in the test macro, cause the oscillographic computer of connecting bus analyzer and bus measured that the CAN bus message can not be reacted on other computers of test macro timely, this causes difficulty will for whole test job.
Summary of the invention
In order to overcome that there is the isolatism of test macro in prior art and to people's dependent deficiency, the invention provides a kind of remote controlled CAN bus test device based on bus analysis instrument CANcaseXL, bus oscilloscope CANscope, CAN bus interface controller, can realize bus analysis instrument CANcaseXL and the oscillographic Long-distance Control of bus, connecting bus analyzer and the oscillographic computer of bus can be integrated among the complicated test macro; Can finish the operation that originally must on connecting bus analyzer and the oscillographic computer of bus, carry out by host computer, reduce manpower demand, for test is provided convenience.As long as the connecting bus analyzer can link to each other with the host computer in the system with the oscillographic computer of bus, the oscillographic computer location of connecting bus analyzer and bus just can be arranged arbitrarily, and by the information of the measured CAN bus of bus analysis instrument and bus oscilloscope can be real-time the host computer that is reflected to test macro on, thereby effects limit such as place have been broken away from, for bus test facilitates.
The technical solution adopted for the present invention to solve the technical problems is: comprise bus analysis instrument, bus oscilloscope, bus interface controller, bus monitoring computer and main control computer.Main control computer arrives bus interface controller by serial ports transmission interface selection instruction, control will be tested the bus interface of load and the break-make of CAN bus, main control computer sends instruction by ICP/IP protocol to the bus monitoring computer, the oscillographic work of control bus analyzer and bus, bus analysis instrument and bus oscilloscope transfer to the bus monitoring computer after receiving the data transmitted on the bus and instruction, by the bus monitoring computer statistic information of main control computer desired data and relevant CAN bus are passed to main control computer by ICP/IP protocol.
Described interface controller comprises CAN controller and the CAN interface connector that serial communication module, relay control module, relay array are formed.Main control computer sends closure or open command by the serial communication module, relay control module makes the relevant relay closes or the disconnection of CAN controller, the CAN interface connector that is connected with this relay is connected with CAN bus in the CAN controller or disconnects, make the CAN interface controller can satisfy the multichannel interface and connect needs, finish the demand that data communication, testing equipment etc. connect.
The method of testing of CAN bus test device of the present invention may further comprise the steps:
The first step, main control computer by serial ports to CAN bus control unit transmission interface selection instruction.
Main control computer sends CAN interface selection instruction to the CAN bus interface controller, and by selection instruction, the port of appointment was opened during the CAN bus control unit will instruct, and the bus interface that test load is connected on the CAN bus.
In second step, main control computer sends initialization directive by Ethernet to the bus monitoring computer.
Main control computer sends initialization directive to the bus monitoring computer, and the bus monitoring computer receives that the instruction back starts bus analysis instrument, bus oscilloscope.
In the 3rd step, main control computer sends to the bus monitoring computer by Ethernet and loads configuration-direct.
Main control computer sends to the bus monitoring computer and loads configuration-direct, determines the load code name of required test, and the bus monitoring computer selects corresponding bus configuration to be loaded on bus analysis instrument and the bus oscilloscope after receiving the load code name.
In the 4th step, main control computer sends the beginning test instruction by Ethernet to the bus monitoring computer.
Main control computer sends the beginning test instruction to the bus monitoring computer, and the bus monitoring computer begins monitoring bus information and variation thereof after receiving the beginning test instruction.
In the 5th step, test load brings into operation.
Test load is brought into operation, and message be obtained or be sent to test load will by the CAN bus.
In the 6th step, bus analysis instrument, bus oscilloscope show variation.
The bus analysis instrument receives information transmitted on the CAN bus, and the physical values that the bus oscilloscope receives on the CAN bus changes, and passes to the bus monitoring computer.
In the 7th step, the bus monitoring computer transmits bus message by Ethernet to main control computer.
The bus monitoring computer is sent to main control computer with the bus message that monitors, and main control computer receives after the message to carry out with load and moves and instruction set compares, and can judge whether operate as normal of load.
In the 8th step, the bus monitoring computer transmits the bus statistical information by Ethernet to main control computer.
The bus analysis instrument generates the statistic information of bus according to the communication situation of CAN bus, the bus monitoring computer is delivered to main control computer with these statistical informations, thereby can judge the operating state of bus according to these statistical informations, if load test is normal, then carry out～the ten one step of the 9th step successively, if the load test mistake then carried out for the 12nd step and the 13 step successively.
In the 9th step, main control computer sends the test halt instruction by Ethernet to the bus monitoring computer.
Test is finished the back main control computer and send to be tested halt instruction to the bus monitoring computer, and the bus monitoring computer is received and stopped the monitoring to bus of bus analysis instrument and bus oscilloscope after the instruction.
In the tenth step, main control computer sends to bus interface controller by serial ports and disconnects the designated port instruction.
Main control computer is to the open command of bus interface controller transmission designated port, and the disconnection designated port is connected with the CAN bus.
The 11 step repeated ten steps of the first step to the, until test all load to be measured that finishes.
In the 12 step, main control computer sends the designated port open command by serial ports to bus interface controller.
Load is carried out and to be made mistakes or the and instruction table is not inconsistent, and main control computer sends the instruction of the port disconnection of the load of test to bus interface controller, disconnection being connected of the load of testing and CAN bus.
In the 13 step, main control computer sends the test halt instruction by Ethernet to the bus monitoring computer.
Main control computer sends the test halt instruction to the bus monitoring computer, and the bus monitoring computer stops bus analysis instrument and the oscillographic operation of bus after receiving halt instruction, stops its monitoring to bus.
The invention has the beneficial effects as follows: connecting bus analyzer and the oscillographic computer of bus are carried out Long-distance Control owing to adopted, make us the computer that connects CANcaseXL and CANscope to be joined among the test macro easily, make us can among the test macro of complexity, also can use bus analysis instrument CANalyzer and bus oscilloscope CANscope, facilitate for the CAN bus test; Operation such as realize that Long-distance Control bus analysis instrument and the oscillographic loading of bus are disposed, begun, stop, withdrawing from.Main control computer can also obtain the information of the statistic that CAN bus message that the bus monitoring computer obtains and CANalyzer software produces by ICP/IP protocol, make main control computer can obtain the state of CAN bus in real time, thereby realize the unattended of monitoring bus computer, save manpower; Because the bus monitoring computer is to be connected with main control computer and main control computer can obtain the related news of CAN bus again by network by Ethernet, so the bus monitoring computer can overcome the restriction that factors such as testing the place is brought bus test, can arrange arbitrarily, make things convenient for the carrying out of bus test; The access of bus interface controller make we can be respectively with a plurality of test load controlled respectively be linked into the CAN bus, realized automation for the different loads test.
The present invention is further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a connection diagram of the present invention.
Fig. 2 is a flow chart of the present invention.
Fig. 3 is an operational flowchart of the present invention.
Fig. 4 is a CAN bus interface controller principle schematic.
1 is that the network of host computer (main control computer in the test macro) and bus monitoring computer (being connected CAN bus analysis instrument and the oscillographic computer of CAN bus) is connected among Fig. 1, and its network can require adopt heterogeneous networks structures such as Ethernet, reflective memory net according to the difference of test macro.2 is the CAN bus network, and bus analysis instrument and bus oscilloscope are connected to same CAN bus, and the physical connection interface is taked the DB9 interface.3 be bus analysis instrument and bus oscilloscope with computer between be connected, adopt USB and serial ports to be connected on the computer respectively, 4 is the connection between host computer and the bus control unit, bus interface controller receives the instruction of host computer by serial ports.
Embodiment
Device embodiment:, the inventive system comprises host computer, bus interface controller, bus monitoring computer, bus analysis instrument, bus oscilloscope, tested load 1 to n, CAN bus and ethernet network with reference to Fig. 1.A computer as the bus monitoring computer in CAN bus analysis instrument and CAN bus oscilloscope and the test macro is connected, the bus monitoring computer is connected by Ethernet with main control computer (host computer) in the test macro, adopts ICP/IP protocol to carry out transfer of data between these two computers.The load of CAN bus analysis instrument, CAN bus oscilloscope and required test is inserted the CAN bus interface controller, so just formed a CAN bus test network with extensibility.Can require to expand according to the difference of load, thereby satisfy test request test macro.According to test request, host computer transmission interface selection instruction makes the CAN bus interface controller that the CAN bus interface that will test load is connected with the CAN bus to the CAN bus interface controller.According to test request, host computer sends instruction by ICP/IP protocol to the bus monitoring computer, and the bus monitoring computer is accepted to instruct post command bus analysis instrument and bus oscilloscope to choose and will test the supporting configuration of load and loaded.Test can be carried out after configuration loaded and finishes.After the host computer order test beginning, the bus analysis instrument receives data and the instruction of being transmitted on the bus, the statistic information of needed data of host computer and relevant CAN bus is passed to host computer by ICP/IP protocol, host computer obtains data and compares with expected data, thereby finishes the test job to bus.After test was finished, host computer sent halt instruction by ICP/IP protocol to the bus monitoring computer, and the bus monitoring computer receives that the instruction back sends halt instruction to bus analysis instrument and bus oscilloscope, and bus analysis instrument and bus oscilloscope are carried out and stopped action.Host computer sends halt instruction to the CAN bus interface controller simultaneously, and CAN bus control unit disconnection bus analysis instrument, bus oscilloscope, test load are connected with bus.Test job finishes.Test another load as needs, only need host computer to CAN bus control unit transmission interface selection instruction, the CAN bus interface controller will be communicated with the load of required test with the CAN bus, can begin the bus test work of another load.
The CAN interface controller is made up of four parts among Fig. 4, comprises CAN bus and CAN Bussing connector that serial communication module, relay control module, relay array are formed.Utilize the CAN bus to have only two leads, when system expands, directly new node is articulated on the bus and gets final product, in case gross error appears in a certain node, can break away from bus automatically, other operations on the bus are unaffected, joint number reality can reach these characteristics of 110, make up a bus loop, utilize the control mode of relay, the connection that realizes Long-distance Control CAN Interface ﹠ Bus with opening operation, control that testing equipment is connected with tested load bus, function such as bus communication between the load.Its operation principle is an example with relay 1, and host computer sends close command by serial ports, and relay control module enables relay 1 closure, and the CAN interface that is connected with relay 1 is connected with CAN bus in the CAN controller.In like manner, when host computer sent open command, relay 1 disconnected, and the coupled CAN interface and the CAN bus of CAN controller disconnect.Simultaneously, relay control module can be controlled the closed and disconnection of multicircuit relay simultaneously, makes the CAN interface controller can satisfy the multichannel interface and connects needs.Finish the demand that data communication, testing equipment etc. connect.
Method embodiment: method of the present invention may further comprise the steps:
Device is formed and is built:
Testing apparatus is made up of host computer, bus monitoring computer, bus analysis instrument, bus oscilloscope, bus interface controller, tested load, Ethernet and CAN bus.The bus analysis instrument is connected on the bus monitoring computer by USB interface earlier, by the DB9 interface bus analysis instrument is connected on the CAN bus again.The bus oscilloscope is connected on the bus monitoring computer by serial ports earlier, by the DB9 interface bus oscilloscope is connected on the same CAN bus again.The CAN bus is to transmit by the potential difference of (CAN low-CAN_L and these two lines of CAN height-CAN_H) on two wires information of carrying out.The DB9 interface has used the 2nd to be connected CAN_L and CAN_H with the 7th pin respectively, and test load is connected in same CAN bus by the DB9 interface.The bus monitoring computer is connected by Ethernet with host computer.To test load and insert bus interface controller respectively, host computer will be connected by serial ports with bus interface controller.
Testing procedure:
The first step: select test load
Host computer sends the load selection instruction by serial ports to bus control unit, selects load 1 is inserted the CAN bus, and bus interface controller after receiving instruction is connected the CAN bus interface and the CAN bus of load 1, and all the other load and bus keep off-state.
Second step: initialization
Host computer sends initialization directive by Ethernet to the bus monitoring computer, and after the bus monitoring computer was received instruction, operation CANalyzer and CANscope opened its initial interface respectively, finish initialization.
The 3rd step: loaded load configuration
Host computer sends the load configuration instruction by Ethernet to the bus monitoring computer, host computer notice bus monitoring load that computer is tested is No. 1 load, bus monitoring computer control CANalyzer and CANscope load the good test parameter of configured in advance, comprising: baud rate 125, employing standard frame, passage 1 are the message sink passage.
The 4th step: test beginning
Host computer sends the test sign on by Ethernet to the bus monitoring computer, and the bus monitoring computer receives that the instruction back starts CANalyzer and CANscope, makes it begin monitoring to bus.
The 5th step: start the test load of selecting
Start load 1, make its operate as normal.Along with the operate as normal of test load, test load is respectively to the following data of CAN bus transfer: 01 00 00 01 00 00 00 00; 01 00 00 00 00 00 00 00; 01 00 01 01 00 00 0000; 01 00 03 01 00 00 00 00, these data are the data that load transducer measures, and send to bus.
The 6th step: bus analysis instrument and bus oscilloscope detect the CAN bus message
The bus analysis instrument receives the data that test load 1 sends to the CAN bus: 01 00 00 01 00 00 00 00; 01 00 00 00 00 00 00 00; 01 00 01 01 00 00 00 00; 01 00 03 01 00 00 00 00, and information associated with the data: ID=0, Δ t=0.03.
The 7th the step: the bus monitoring computer with transfer of data to host computer
These data 01 00 00 01 00 00 00 00 that the bus monitoring computer will receive; 01 00 00 00 00 00 0000; 01 00 01 01 00 00 00 00; 01 00 03 01 00 00 00 00 are sent to host computer one by one by Ethernet.
The 8th step: the bus analysis instrument generates the statistic information about the CAN bus
In monitoring CAN bus simultaneously, the bus analysis instrument comprises: standard frame speed: 10fr/s, erroneous frame speed: 1fr/s etc. according to the statistic information of bus data transmission state generation about the CAN bus.The bus monitoring computer is transferred to host computer with the data that produce by Ethernet, shows simultaneously on the host computer screen.
The data 01 00 00 01 00 00 00 00 of being sent according to the bus monitoring computer; 01 00 00 00 00 00 0000; 01 00 01 01 00 00 00 00; 01 00 03 01 00 00 00 00, parameters such as ID=0, time of reception judge whether and indicated consistent of load instruction set, and whether the instruction that receives is consistent with actuator's action of load, thereby judge whether operate as normal of load.According to test, test load 1 directive command and instruction collection conforms to, and actuator moves also that and instruction is consistent, and test result is load 1 operate as normal.
The 9th step: load 1 EOT sends the test halt instruction
All data and instruction testing finish and load instruction set contrast errorless after, main control computer sends the test halt instruction to the bus monitoring computer, the bus monitoring computer is received and is stopped the monitoring to bus of bus analysis instrument and bus oscilloscope after the instruction.
The tenth step: host computer sends CAN interface open command by serial ports
Host computer sends to bus interface controller by serial ports and disconnects test load 1 port command, and bus interface controller receives that the instruction back disconnects being connected of load 1 and CAN bus, and do not have load to be connected with the CAN bus this moment again.
The 11 step: the test of beginning load 2
Host computer sends connectivity port 2 instructions by serial ports to bus interface controller, and bus interface controller is received the port of load 2 on the CAN bus after receiving instruction.Subsequent process goes on foot since second and repeats downwards.
Claims (2)
1. remote controlled CAN bus test device, comprise the bus analysis instrument, the bus oscilloscope, bus interface controller, bus monitoring computer and main control computer, it is characterized in that: main control computer arrives bus interface controller by serial ports transmission interface selection instruction, control will be tested the bus interface of load and the break-make of CAN bus, main control computer sends instruction by ICP/IP protocol to the bus monitoring computer, the oscillographic work of control bus analyzer and bus, bus analysis instrument and bus oscilloscope transfer to the bus monitoring computer after receiving the data transmitted on the bus and instruction, by the bus monitoring computer statistic information of main control computer desired data and relevant CAN bus are passed to main control computer by ICP/IP protocol.
2. remote controlled CAN bus test device according to claim 1, it is characterized in that: described interface controller comprises CAN controller and the CAN interface connector that serial communication module, relay control module, relay array are formed, main control computer sends closure or open command by the serial communication module, relay control module makes the relevant relay closes or the disconnection of CAN controller, and the CAN interface connector that is connected with this relay is connected with CAN bus in the CAN controller or disconnects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206320034U CN201937613U (en) | 2010-11-25 | 2010-11-25 | Remote-controlled controller area network (CAN) bus test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206320034U CN201937613U (en) | 2010-11-25 | 2010-11-25 | Remote-controlled controller area network (CAN) bus test device |
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| CN201937613U true CN201937613U (en) | 2011-08-17 |
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| CN2010206320034U Expired - Lifetime CN201937613U (en) | 2010-11-25 | 2010-11-25 | Remote-controlled controller area network (CAN) bus test device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104954215A (en) * | 2015-07-29 | 2015-09-30 | 天津市英贝特航天科技有限公司 | CAN bus circuit |
| CN107193272A (en) * | 2017-06-14 | 2017-09-22 | 中石化石油工程技术服务有限公司 | One kind is with brill measurement and control instrument bus testing system |
| CN108243074A (en) * | 2017-12-11 | 2018-07-03 | 芜湖职业技术学院 | The device of more CAN Practical training equipments tests can be achieved |
| CN114039902A (en) * | 2021-10-13 | 2022-02-11 | 英博超算(南京)科技有限公司 | CAN bus test system capable of realizing automatic test |
| CN115022221A (en) * | 2022-05-31 | 2022-09-06 | 东风电驱动系统有限公司 | Automatic test system and method for multi-channel CAN gateway |
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2010
- 2010-11-25 CN CN2010206320034U patent/CN201937613U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104954215A (en) * | 2015-07-29 | 2015-09-30 | 天津市英贝特航天科技有限公司 | CAN bus circuit |
| CN107193272A (en) * | 2017-06-14 | 2017-09-22 | 中石化石油工程技术服务有限公司 | One kind is with brill measurement and control instrument bus testing system |
| CN107193272B (en) * | 2017-06-14 | 2024-03-19 | 中国石油化工集团有限公司 | Bus test system of measurement and control instrument while drilling |
| CN108243074A (en) * | 2017-12-11 | 2018-07-03 | 芜湖职业技术学院 | The device of more CAN Practical training equipments tests can be achieved |
| CN108243074B (en) * | 2017-12-11 | 2021-02-05 | 芜湖职业技术学院 | Device capable of realizing testing of multiple CAN (controller area network) practical training devices |
| CN114039902A (en) * | 2021-10-13 | 2022-02-11 | 英博超算(南京)科技有限公司 | CAN bus test system capable of realizing automatic test |
| CN115022221A (en) * | 2022-05-31 | 2022-09-06 | 东风电驱动系统有限公司 | Automatic test system and method for multi-channel CAN gateway |
| CN115022221B (en) * | 2022-05-31 | 2024-01-09 | 东风电驱动系统有限公司 | Automatic test system and method for multi-path CAN gateway |
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