CN218273168U

CN218273168U - Testing device

Info

Publication number: CN218273168U
Application number: CN202222753834.2U
Authority: CN
Inventors: 王文才; 徐林浩; 刘继忠
Original assignee: BDstar Intelligent and Connected Vehicle Technology Co Ltd
Current assignee: BDstar Intelligent and Connected Vehicle Technology Co Ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-01-10
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a testing device, which comprises a control module, a switch module and a transceiver module, wherein the transceiver module comprises a CAN bus module and a LIN bus module; the switch module is connected with the control module, the control module is respectively connected with the CAN bus module and the LIN bus module, and the CAN bus module and the LIN bus module are also used for being connected with a device to be tested; the switch module can be used for sending a control instruction to the device to be tested, and judging whether the device to be tested has a fault according to whether the device to be tested executes the control instruction. The utility model discloses CAN carry out CAN bus and LIN bus test to electronic system in the car, and reduced the test cost and simplified test procedure.

Description

Testing device

Technical Field

The utility model relates to the field of automotive technology, especially, relate to a testing arrangement.

Background

A CAN bus (Controller Area Network) and an LIN bus (Local Interconnect Network) are widely used in an intelligent vehicle, and a main control system of the intelligent vehicle CAN be connected to various electronic systems through the CAN bus and the LIN bus to meet the requirements for real-time monitoring and control of various electronic systems in the vehicle, such as an air conditioning system and a volume control system. Therefore, before various electronic systems are mounted on the vehicle, it is necessary to test the electronic systems to confirm that the electronic systems CAN respond to the control commands through the CAN bus and the LIN bus. The existing test has the following defects that firstly, a professional detection company needs to test a CAN bus or a LIN bus of an electronic system, so that the cost is high; secondly, the electronic system is firstly installed in the vehicle, and the CAN bus and the LIN bus are tested in the vehicle, however, if the test has problems, the related electronic system needs to be dismantled, and the test process is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a testing device aims at solving the higher and loaded down with trivial details problem of test of cost to the CAN bus of electronic system in the car and LIN bus test at present.

The utility model provides a testing device, which comprises a control module, a switch module and a transceiver module, wherein the transceiver module comprises a CAN bus module and a LIN bus module; the switch module is connected with the control module, the control module is respectively connected with the CAN bus module and the LIN bus module, and the CAN bus module and the LIN bus module are also used for being connected with a device to be tested; the switch module can be used for sending a control instruction to the device to be tested, and judging whether the device to be tested has a fault according to whether the device to be tested executes the control instruction.

Furthermore, the CAN bus module comprises a high-speed CAN transceiver module, a low-speed CAN transceiver module and a single-wire CAN transceiver module; the high-speed CAN transceiving module, the low-speed CAN transceiving module and the single-wire CAN transceiving module are all used for being connected with the device to be tested.

Further, the switch module comprises a key switch module and a knob coding switch module; the key switch module and the knob coding switch module are both connected with the control module.

Furthermore, the key switch module comprises at least one key switch circuit with a lock and at least one touch key switch circuit.

Further, the knob code switch module comprises at least one knob code switch.

Furthermore, the key switch circuit with lock comprises a first diode, a first resistor and a first key switch; the anode of the first diode is connected with the power supply module, the cathode of the first diode is connected with one end of the first resistor, the other end of the first resistor is connected with the first key switch, and the first key switch is further connected with the control module.

Further, the light touch key switch circuit comprises a plurality of series circuits, each series circuit comprises a second resistor and a second key switch, and each series circuit is connected in parallel; the second key switch is respectively connected with the second resistor and the control module.

Further, the intelligent control system also comprises a display module, and the display module is connected with the control module.

Further, the LIN bus module comprises at least one LIN transceiver, and the LIN transceivers are respectively connected with the control module and the device to be tested.

Furthermore, the CAN transceiver module, the low-speed CAN transceiver module and the single-wire CAN transceiver module all comprise at least one CAN transceiver, and the CAN transceivers are respectively connected with the control module and the device to be tested.

The utility model provides a testing arrangement CAN assign control command to control module through switch module, and control module sends control command to transceiver module, and transceiver module's CAN bus module and LIN bus module convert control command into corresponding CAN data and LIN data to send for the examination device that awaits measuring that corresponds, thereby satisfy the test to the interior electronic system of car of difference, not only reduced test cost and still simplified test procedure.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic block diagram of a testing apparatus according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of a testing apparatus according to another embodiment of the present invention;

fig. 3 is a circuit diagram of a key switch circuit with lock according to an embodiment of the present invention;

fig. 4 is a circuit diagram of a tact key switch circuit according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 to 4, fig. 1 is a block diagram illustrating a testing apparatus 100 according to an embodiment of the present invention; fig. 2 is a block diagram of a testing apparatus 100 according to another embodiment of the present invention; fig. 3 is a circuit diagram of a key switch circuit 121 with a lock according to an embodiment of the present invention; fig. 4 is a circuit diagram of the tact key switch circuit 122 according to an embodiment of the present invention.

As shown in fig. 1, the testing apparatus 100 provided by the present invention includes a control module 20, a switch module 10, and a transceiver module 30, where the transceiver module 30 includes a CAN bus module 31 and a LIN bus module 32; the switch module 10 is connected with the control module 20, the control module 20 is respectively connected with the CAN bus module 31 and the LIN bus module 32, and the CAN bus module 31 and the LIN bus module 32 are further used for being connected with a device to be tested 200; wherein, a control command can be sent to the device under test 200 through the switch module 10, and whether a fault exists in the device under test 200 is determined according to whether the device under test 200 executes the control command.

Specifically, the control module 20 is used for processing data, for example, the switch module 10 issues a control command, and the control module 20 receives the control command and sends the control command to the transceiver module 30. The CAN bus module 31 of the transceiver module 30 converts the received control command into CAN data and transmits the CAN data to the device to be tested 200, and the LIN bus module 32 converts the received control command into LIN data and transmits the LIN data to the device to be tested 200. Finally, whether the test is successful or not is judged according to whether the device to be tested 200 executes the control command or not. For example, if the device to be tested 200 may be an air conditioner, the temperature of the air conditioner may be started and adjusted by the switch module 10, and if the air conditioner is successfully started and the temperature is adjusted to the corresponding temperature, the test is passed, otherwise, the test is not passed. It should be noted that the device under test 200 does not need to be connected to both the CAN bus module 31 and the LIN bus module 32, but rather to one of them depending on its specific communication protocol.

As a further embodiment, the CAN bus module 31 includes a high-speed CAN transceiver module 311, a low-speed CAN transceiver module 312, and a single-wire CAN transceiver module 313; the high-speed CAN transceiver module 311, the low-speed CAN transceiver module 312, and the single-wire CAN transceiver module 313 are all configured to connect with the device under test 200.

The high-speed CAN transceiver module 311 has a high communication speed, and is suitable for testing an electronic system requiring high-speed communication, the low-speed CAN transceiver module 312 and the single-wire CAN transceiver module 313 CAN share the same interface, wherein the low-speed CAN transceiver module 312 is suitable for a low-speed communication electronic system of 125Kbps in a vehicle, and the single-wire CAN transceiver module 313 is used for equipment connected by single-wire data.

As a further embodiment, the switch module 10 includes a key switch module 12 and a knob code switch module 11; the key switch module 12 and the knob code switch module 11 are both connected with the control module 20.

The knob code switch module 11 may be used to simulate functions of an air conditioner knob, a volume knob, and the like, which may be implemented by a knob on a vehicle, so as to test a corresponding electronic system. The key switch can be used for simulating functions of an ignition switch, a reversing switch, functional mode switching and the like in a vehicle, which are triggered by clicking, so that the system corresponding to the functions is tested.

As a further embodiment, the key switch module 12 includes at least one locked key switch circuit 121 and at least one tact key switch circuit 122.

The key switch circuit 121 with lock is used to simulate the functions that can be realized by various key switches with lock on automobiles such as an ignition switch, a reversing switch, a small light switch and the like. The tact key switch circuit 122 is used to simulate various functions that can be realized by tact in an automobile, such as volume up, volume down, mute, and function mode switching.

As a further embodiment, the knob code switch module 11 comprises at least one knob code switch.

The knob code switch module 11 includes two knob code switches, and can simulate a volume knob and an air conditioner knob at the same time.

As a further embodiment, the key switch circuit 121 with lock includes a first diode D1, a first resistor R1, and a first key switch S1; the anode of the first diode D1 is connected to the power supply module, the cathode of the first diode D1 is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to the first key switch S1, and the first key switch S1 is further connected to the control module 20.

The first diode D1 is a light emitting diode for indicating a state of the first key switch S1, the first resistor R1 is a current limiting resistor, and the first key switch S1 is used for simulating a locking and unlocking state.

As a further example, the tact key switch circuit 122 includes a plurality of series circuits, each of which includes a second resistor R2 and a second key switch S2, and each of the series circuits is connected in parallel; the second key switch S2 is connected to the second resistor R2 and the control module 20, respectively.

As shown in fig. 4, the resistance of the second resistor R2 in each series circuit may be different, and different functions are simulated by different resistances. The circuit shown in fig. 4 includes seven series circuits, and the resistance values of the second resistors R2 are different, so that seven key voltage values can be provided to the control module 20, and seven function modes, such as volume up, volume down, mute, and function mode switching, can be simulated. It should be noted that the touch key switch circuit 122 may further include a third key, through which a function that requires only a touch to trigger, such as turning on a light, is simulated.

As a further example, the display module is connected to the control module 20.

The display module is used for displaying the test result, such as success or failure.

As a further embodiment, the LIN bus module 32 includes at least one LIN transceiver, which is connected with the control module 20 and the device under test 200, respectively.

The LIN bus module 32 may include two LIN transceivers for converting control commands into LIN data and transmitting the LIN data to the device under test 200.

As a further embodiment, the CAN transceiver module 30, the low-speed CAN transceiver module 312 and the single-wire CAN transceiver module 313 each include at least one CAN transceiver, and the CAN transceivers are respectively connected to the control module 20 and the device under test 200.

The CAN transceiver is configured to convert the control command into CAN data and send the CAN data to the device under test 100.

The utility model discloses not only CAN carry out CAN bus and LIN bus test to various electronic systems in the car, the cost is lower moreover, and the testing process is simple and convenient, has improved the convenience.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The testing device is characterized by comprising a control module, a switch module and a transceiver module, wherein the transceiver module comprises a CAN bus module and a LIN bus module;

the switch module is connected with the control module, the control module is respectively connected with the CAN bus module and the LIN bus module, and the CAN bus module and the LIN bus module are also used for being connected with a device to be tested;

the switch module can be used for sending a control instruction to the device to be tested, and judging whether the device to be tested has a fault according to whether the device to be tested executes the control instruction.

2. The test apparatus of claim 1, wherein the CAN bus module comprises a high-speed CAN transceiver module, a low-speed CAN transceiver module, and a single-wire CAN transceiver module;

the high-speed CAN transceiving module, the low-speed CAN transceiving module and the single-wire CAN transceiving module are all used for being connected with the device to be tested.

3. The testing device of claim 1, wherein the switch module comprises a key switch module and a knob code switch module;

the key switch module and the knob coding switch module are both connected with the control module.

4. The test device of claim 3, wherein the keyswitch module includes at least one keyed keyswitch circuit and at least one light touch keyswitch circuit.

5. The testing device of claim 3, wherein the knob coded switch module comprises at least one knob coded switch.

6. The test apparatus of claim 4, wherein the key switch circuit comprises a first diode, a first resistor, and a first key switch;

the anode of the first diode is connected with the power supply module, the cathode of the first diode is connected with one end of the first resistor, the other end of the first resistor is connected with the first key switch, and the first key switch is further connected with the control module.

7. The test apparatus as claimed in claim 4, wherein the tact key switch circuit comprises a plurality of series circuits each including a second resistor and a second key switch, and each of the series circuits is connected in parallel;

the second key switch is respectively connected with the second resistor and the control module.

8. The test device of claim 1, further comprising a display module coupled to the control module.

9. The test device of claim 1, wherein said LIN bus module comprises at least one LIN transceiver, said LIN transceiver being connected to said control module and said device under test, respectively.

10. The test device of claim 2 wherein the CAN transceiver module, the low speed CAN transceiver module and the single wire CAN transceiver module each include at least one CAN transceiver, the CAN transceivers being connected to the control module and the device under test, respectively.