CN217846516U - Automobile CAN bus testing device - Google Patents

Automobile CAN bus testing device Download PDF

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Publication number
CN217846516U
CN217846516U CN202221878692.6U CN202221878692U CN217846516U CN 217846516 U CN217846516 U CN 217846516U CN 202221878692 U CN202221878692 U CN 202221878692U CN 217846516 U CN217846516 U CN 217846516U
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China
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test
bus
interface
adapter
voltmeter
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CN202221878692.6U
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Chinese (zh)
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孙后昌
刘师
许中秋
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Chery Jaguar Land Rover Automotive Co Ltd
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Chery Jaguar Land Rover Automotive Co Ltd
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Abstract

The application discloses car CAN bus testing arrangement is provided with the test interface of CAN bus on the CAN bus. The test device comprises: the testing device comprises a testing box, a first wire harness and a second wire harness, wherein a voltmeter and the first wire harness are arranged in the testing box, a first switching component is arranged at the first end of the first wire harness, and the second end of the first wire harness is suitable for being connected with the voltmeter; and a second wire harness, wherein a first end of the second wire harness is provided with a second switching assembly, a second end of the second wire harness is provided with a test connecting assembly, the test connecting assembly is configured to be connected with a test interface of the CAN bus, and the second switching assembly is configured to be connected with the first switching assembly. When using car CAN bus testing arrangement of this application, the test coupling assembling on the second pencil links to each other with the test interface of CAN bus, need not to link to each other the electrode of voltmeter and the test interface of CAN bus is direct, and this has made things convenient for the test.

Description

Automobile CAN bus testing device
Technical Field
The application relates to the field of automobile detection devices, in particular to an automobile CAN bus testing device.
Background
Electronic control systems in automobiles usually communicate through a CAN bus, and therefore, when a CAN communication fault occurs, a voltage signal of the CAN bus needs to be detected to assist in diagnosing the fault.
In the prior art automobile, the vehicle-mounted diagnosis interface is not connected with the CAN bus, and only CAN directly connect the electrode of the voltmeter with the joint terminal of the CAN bus to measure the voltage signal on the CAN bus, which causes inconvenient test.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides an automobile CAN bus testing device, wherein a testing interface of a CAN bus is arranged on the CAN bus. The test device includes: the testing device comprises a testing box, a first wire harness and a second wire harness, wherein a voltmeter and the first wire harness are arranged in the testing box, a first switching component is arranged at the first end of the first wire harness, and the second end of the first wire harness is suitable for being connected with the voltmeter; and a second wire harness, wherein a first end of the second wire harness is provided with a second switching assembly, a second end of the second wire harness is provided with a test connecting assembly, the test connecting assembly is configured to be connected with a test interface of the CAN bus, and the second switching assembly is configured to be connected with the first switching assembly.
In one embodiment, the test connection assembly includes a first test interface and a second test interface, the first test interface and the second test interface being connected in parallel with the second wire harness; one of the first test interface and the second test interface is configured to be adapted to interface with a test interface of a CAN bus.
In one embodiment, the automotive CAN bus test apparatus further comprises a diagnostic component configured to be removably coupled to the other of the first test interface and the second test interface.
In one embodiment, the first adapter assembly includes a first adapter port and a second adapter port connected in parallel with the first harness.
In one embodiment, the second switching assembly includes a third switching port and a fourth switching port, the third switching port and the fourth switching port being connected in parallel to the second wiring harness. One of the third adapter interface and the fourth adapter interface is detachably connected with one of the first adapter interface and the second adapter interface; the other of the third adapter port and the fourth adapter port is removably connectable to the other of the first adapter port and the second adapter port.
In one embodiment, the test interface of the CAN bus comprises a plurality of test terminals of the CAN bus; the test box is also provided with a first wiring socket which is connected with the input end of the voltmeter; the test box is provided with a plurality of second wiring sockets, the number of the second wiring sockets is equal to the number of the test terminals of the CAN bus, and the second wiring sockets are connected with the corresponding test terminals of the CAN bus through the first wiring harness and the second wiring harness respectively.
In one embodiment, the automotive CAN bus test device further comprises a jumper wire, one end of the jumper wire is inserted into the first wiring jack, and the other end of the jumper wire is selectively inserted into one of the plurality of second wiring jacks.
In one embodiment, the second wiring socket includes a ground socket connected to a ground terminal of the test interface of the CAN bus through the first wire harness and the second wire harness; the grounding end of the voltmeter is connected with the grounding jack.
In one embodiment, the automotive CAN bus test device further comprises a power supply component, wherein the power supply component is connected with a power supply terminal of the voltmeter.
In one embodiment, the second connection socket comprises a power socket connected to power terminals of a test interface of the CAN bus; the power supply assembly comprises a triode, a collector of the triode is connected with a power socket, an emitter of the triode is connected with a power terminal of the voltmeter, and a base of the triode is connected with a grounding socket.
Compared with the prior art, the beneficial effects of this application are as follows: the test device of the application comprises a test box with a voltmeter, a first wire harness connected with the test box and a second wire harness connected with the first wire harness. The test connection assembly on the second wire harness is suitable for being connected with a test interface of the CAN bus. Therefore, during testing, the CAN bus is connected with the voltmeter of the test box through the second wire harness and the first wire harness, the electrode of the voltmeter is not required to be directly connected with a test interface of the CAN bus, and testing is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application in any way, wherein:
fig. 1 schematically shows an automotive CAN bus test apparatus according to an embodiment of the present application.
Fig. 2 schematically shows the second wire harness.
Figure 3 schematically shows a circuit connection diagram within the test cartridge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 schematically shows an automotive CAN bus test apparatus 1 (hereinafter referred to simply as test apparatus 1) according to one embodiment of the present application. A test interface (not shown in the figure) of the CAN bus is arranged on the CAN bus of the automobile. When the automobile has a communication fault, the testing device 1 is connected with a testing interface of the CAN bus to detect signals such as voltage on the CAN bus, so as to assist in diagnosing the communication fault.
The test apparatus 1 is described below.
As shown in fig. 1, the test device 1 includes a test cassette 30, a first wire harness 10, and a second wire harness 20. A voltmeter 40 is provided in the test cartridge 30. The first end of the first harness 10 is provided with a first junction assembly 101 and the second end is adapted to be connected to a voltmeter 40. The first end of the second harness 20 is provided with a second adaptor assembly 201, and the second end is provided with a test connection assembly 202. The test connection assembly 202 is configured to be adapted to connect to a connector terminal of a test interface of a CAN bus. The second adapter assembly 201 is configured to be adapted to connect to the first adapter assembly 101.
In use of the test device 1 according to the present application, the test connection assembly 202 is connected to the test interface of the CAN bus, the second switch assembly 201 is connected to the first switch assembly 101, and the second end of the first harness 10 is connected to the voltmeter 40. Thus, the CAN bus is connected to the voltmeter 40 through the second wire harness 20 and the first wire harness 10, and the voltage signal on the CAN bus CAN be conveniently tested through the voltmeter 40. In the whole connection, the electrode of the voltmeter is not required to be directly connected with a test interface of the CAN bus, so that the test is convenient.
Alternatively, as shown in fig. 2, the test connection assembly 202 includes a first test interface 202a and a second test interface 202b, and the first test interface 202a and the second test interface 202b are connected to the second wire harness 20 in parallel. In other words, the first test interface 202a and the second test interface 202b are integrated into a one-to-two test interface. One of the first test interface 202a and the second test interface 202b is configured to be adapted to interface with a test interface of a CAN bus. According to the structure, the first test interface 202a or the second test interface 202b is connected with the test interface of the CAN bus in a plugging mode, the operation is simple and convenient, and the damage to the test interface of the CAN bus is greatly reduced. In one embodiment, the mating described herein may be accomplished by mating pins and holes (as described below).
Optionally, the testing device 1 further comprises a diagnostic component. The diagnostic component is configured to be removably coupled to the other of the first test interface 202a and the second test interface 202 b. For example, the first test interface 202a is connected to a test interface of the CAN bus, while the second test interface 202b is connected to a diagnostic component. In this way, the voltmeter 40 CAN receive the voltage signal from the first test interface 202a, so as to test the voltage signal on the CAN bus; meanwhile, as the second test interface 202b is connected with the first test interface 202a, the diagnosis component connected with the second test interface 202b CAN also obtain a voltage signal on the CAN bus, so as to implement more detailed synchronous diagnosis of the communication fault of the CAN bus. In one embodiment, the diagnostic component may be a computer with diagnostic software installed thereon, as is well known to those skilled in the art and will not be described herein.
Optionally, as also shown in fig. 1, the first adapter assembly 101 includes a first adapter port 101a and a second adapter port 101b, the first adapter port 101a and the second adapter port 101b being connected in parallel with the first harness 10. In other words, the first adapter port 101a and the second adapter port 101b are integrated into a one-to-two interface. Accordingly, the second adapter assembly 201 of the second harness 20 includes a third adapter 201a and a fourth adapter 201b, and the third adapter 201a and the fourth adapter 201b are connected in parallel with the first end of the second harness 20. In other words, the third adapter 201a and the fourth adapter 201b are also integrated into a one-to-two interface. In the connection, for example, the third adapter 201a and the first adapter 101a may be detachably connected, and the fourth adapter 201b and the second adapter 101b may be detachably connected. The plug-in operation is very simple, and the one-to-two interface connection is also very stable. In one embodiment, the mating described herein may be accomplished by mating pins and holes (as described below).
It should be understood that in other cases, the second harness 20 may not be used, and the first adapter port 101a and the second adapter port 101b on the first harness 10 may be directly connected to other on-board test interfaces on the vehicle to test the voltage signals of the corresponding components.
As shown in fig. 2, 16 plug pins 203 are provided on each of the first test interface 202a and the second test interface 202b, and the corresponding plug pins on the first test interface 202a and the second test interface 202b are connected to each other, so that the first test interface 202a and the second test interface 202b are substantially identical. Correspondingly, 16 plug holes are arranged on the test interface of the CAN bus as joint terminals. The third adapter port 201a and the fourth adapter port 201b are both provided with 16 plug pins. The second harness 20 includes 16 wires to connect the plug pins on the first test interface 202a and the second test interface 202b with the corresponding plug pins on the third adapter 201a and the fourth adapter 201 b. The first adapter 101a and the second adapter 101b are both provided with 16 insertion holes for being inserted into the third adapter 201a and the fourth adapter 201 b. The first harness 10 includes 16 wires to be connected to the insertion holes of the first adapter 101a and the second adapter 101b, respectively.
As shown in fig. 3, a first jack socket 301 is provided on the test cartridge 30, and the first jack socket 301 is connected to an input 401 of the voltmeter 40. In addition, the test cassette 30 is provided with a plurality of second connection jacks 302. The number of the second connection jacks 302 is equal to the number of the test terminals of the CAN bus and a plurality of the second connection jacks 302 are connected to the test terminals of the corresponding CAN bus through the first wire harness 10 and the second wire harness 20, respectively. The second wiring receptacle 302 includes a grounding receptacle 303. The ground jack 303 is connected to the ground terminal of the test interface of the CAN bus through the first wire harness 10 and the second wire harness 20, and the ground terminal 402 of the voltmeter 40 is connected to the ground jack 303. For example, the number of the second plug ports 302 is 16. During testing, the 16 second connection jacks 302 are connected to the corresponding test terminals of the CAN bus via the first wire harness 10 and the second wire harness 20, respectively, as described above. In this way, only the first plug wire interface 301 needs to be connected to one second jack 302 (for example, via the jumper 404), the voltage of the test terminal of the CAN bus corresponding to the one second jack 302 CAN be tested by the voltmeter 40, and the operation is simple and convenient.
It should also be understood that although the number of the plug pins 203 is described as 16 by way of example in the present application, a person skilled in the art may also set other numbers of plug pins according to practical situations, and accordingly, the number of the plug pins and the plug holes on the first adapter port and the second adapter port, the number of the wires in the second wire harness 20 and the first wire harness 10, and the number of the second plug wire ports 302 are all adjusted accordingly, and will not be described herein again.
As also shown in fig. 3, the testing device 1 further comprises a power supply assembly 60, the power supply assembly 60 being connected to a power supply terminal 403 of the voltmeter 40. In this way, the power supply assembly 60 provides power to the screen of the voltmeter 40 to display the measured voltage reading.
Optionally, the second patch outlet 302 includes a power outlet 304. The power jack 304 is connected to the power terminals of the test interface of the CAN bus. The power supply assembly 60 comprises a triode having a collector 601 connected to the power jack 304, an emitter 603 connected to the power terminal 403 of the voltmeter 40, and a base 602 connected to the ground jack 303. For example, the power supply unit 60 CAN convert a voltage of 12V at the power supply terminal of the test interface of the CAN bus into a voltage of 5V and supply the voltage to the voltmeter 40. The voltmeter 40 does not need an additional external power supply or a battery.
List of reference numerals
Automobile CAN bus testing arrangement: 1
A first wire harness: 10
A first transfer assembly: 101
A first switching interface: 101a
A second adapter: 101b
A second wire harness: 20
The second switching assembly: 201
A third adapter: 201a
A fourth adapter: 201b
Testing the connecting component: 202
A first test interface: 202a of a group
A second test interface: 202b
Inserting pins: 203
A test box: 30
A first wiring receptacle: 301
A second wiring socket: 302
A grounding jack: 303
Power supply socket: 304
A voltmeter: 40
Input end: 401
Ground terminal of the voltmeter: 402
Power supply terminal of voltmeter: 403
Spanning: 404
The power supply assembly: 60
A collector: 601
Base electrode: 602
Emitter electrode: 603
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. The utility model provides an automobile CAN bus testing arrangement be provided with the test interface of CAN bus on the CAN bus, its characterized in that, testing arrangement includes:
a test box, a voltmeter is arranged in the test box,
the first end of the first wiring harness is provided with a first switching assembly, and the second end of the first wiring harness is suitable for being connected with the voltmeter; and
a second wire harness having a first end provided with a second switching assembly and a second end provided with a test connection assembly, the test connection assembly being configured to be adapted to connect with a test interface of the CAN bus, the second switching assembly being configured to be adapted to connect with the first switching assembly.
2. The automotive CAN bus testing device of claim 1, wherein the test connection assembly comprises a first test interface and a second test interface, the first test interface and the second test interface being connected in parallel to the second harness; one of the first test interface and the second test interface is configured to be adapted to interface with a test interface of the CAN bus.
3. The automotive CAN bus testing apparatus of claim 2 further comprising a diagnostic component configured to be removably coupled to the other of the first testing interface and the second testing interface.
4. The automotive CAN bus testing apparatus of claim 1, wherein the first adapter assembly comprises a first adapter port and a second adapter port, the first adapter port and the second adapter port being connected in parallel with the first harness.
5. The automotive CAN bus testing device of claim 4, wherein the second switching assembly comprises a third switching port and a fourth switching port, the third switching port and the fourth switching port being connected in parallel to the second harness;
one of the third adapter interface and the fourth adapter interface is detachably connected with one of the first adapter interface and the second adapter interface; the other of the third adapter port and the fourth adapter port is removably connected to the other of the first adapter port and the second adapter port.
6. The automotive CAN bus test apparatus of claim 1, wherein the test interface of the CAN bus comprises a plurality of CAN bus test terminals;
the test box is also provided with a first wiring socket, and the first wiring socket is connected with the input end of the voltmeter; the test box is provided with a plurality of second wiring sockets, the number of the second wiring sockets is equal to the number of the test terminals of the CAN bus, and the second wiring sockets are connected with the corresponding test terminals of the CAN bus through the first wiring harness and the second wiring harness respectively.
7. The automotive CAN bus test device of claim 6, further comprising a jumper wire having one end plugged into the first connection jack and another end selectively plugged into one of the second plurality of connection jacks.
8. The automotive CAN bus test apparatus of claim 6, wherein the second connection jack comprises a ground jack connected to a ground terminal of a test interface of the CAN bus via the first wire harness and the second wire harness; and the grounding end of the voltmeter is connected with the grounding jack.
9. The automotive CAN bus test device of claim 8, further comprising a power supply component coupled to the power terminals of the voltmeter.
10. The automotive CAN-bus testing apparatus of claim 9, wherein the second connection socket comprises a power socket that is connected to a power terminal of a test interface of the CAN-bus;
the power supply assembly comprises a triode, a collector of the triode is connected with the power socket, an emitter of the triode is connected with a power terminal of the voltmeter, and a base of the triode is connected with the grounding socket.
CN202221878692.6U 2022-07-20 2022-07-20 Automobile CAN bus testing device Active CN217846516U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221878692.6U CN217846516U (en) 2022-07-20 2022-07-20 Automobile CAN bus testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221878692.6U CN217846516U (en) 2022-07-20 2022-07-20 Automobile CAN bus testing device

Publications (1)

Publication Number Publication Date
CN217846516U true CN217846516U (en) 2022-11-18

Family

ID=84038550

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221878692.6U Active CN217846516U (en) 2022-07-20 2022-07-20 Automobile CAN bus testing device

Country Status (1)

Country Link
CN (1) CN217846516U (en)

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