Simulation load device applied to vehicle test and vehicle test system

Abstract

The utility model discloses a simulation load device applied to vehicle testing and a vehicle testing system, and relates to the technical field of simulation testing. The device comprises a mainboard, a load box body and a manual signal module. The mainboard is arranged in the load box body and comprises a mainboard body, a real-time processor, a bus communication unit and an IO communication unit, and a plurality of mainboard interfaces are arranged on the surface of the mainboard. The manual signal module comprises a plurality of analog quantity output units. The analog circuit is arranged in the load box body, and the load box body comprises a shell and a plurality of external interfaces. At least one external interface is connected with the mainboard, and the at least one external interface can be detachably connected with the tested vehicle controller and the upper computer. Therefore, the mainboard is arranged in the load box, and various simulation loads can be set and simulated through the real-time processor, the bus communication unit and the IO communication unit on the mainboard, so that the load box can output various load signals.

Description

Technical Field

[0001] This specification relates to the field of simulation testing technology, and in particular to a simulation load device and a vehicle testing system for vehicle testing. Background Art

[0002] Typically, vehicles require continuous testing during the manufacturing process to improve production quality. Testing of vehicle controllers, in particular, is crucial during vehicle production and development.

[0003] Conventional technology requires debugging and testing after the initial prototype design of a vehicle controller is complete. The longest and most inefficient part of debugging and testing is setting up the test environment. To simulate the product's various input and output requirements, test engineers must manually test load boxes to create a variety of signals or loads, which is time-consuming and tedious.

[0004] Obviously, the existing test load box is difficult to meet the testing requirements of vehicle controllers. Utility Model Content

[0005] This specification provides a simulated load device and a vehicle testing system for vehicle testing, to at least partially solve the above-mentioned problems existing in the prior art.

[0006] This manual adopts the following technical solutions:

[0007] This specification provides a simulated load device for vehicle testing, including a main board, a load box, and a manual signal module;

[0008] The mainboard is arranged inside the load box, and includes a mainboard body and a real-time processor, a bus communication unit, and an IO communication unit fixed on the surface of the mainboard body; the surface of the mainboard body is provided with a plurality of mainboard interfaces;

[0009] The manual signal module includes a plurality of analog output units, each of which includes an analog circuit, an analog output interface, and an operating element. The analog circuit is disposed inside the load box, and the analog output interface and the operating element are both disposed on the surface of the load box. The analog quantity includes at least voltage and resistance.

[0010] The load box includes a shell and multiple external interfaces; there is at least one external interface connected to the mainboard and can be detachably connected to the vehicle controller under test and the host computer.

[0011] Preferably, the plurality of motherboard interfaces include at least a bus communication interface, an IO communication interface, a network interface and a power interface;

[0012] The multiple external interfaces include at least a communication external interface, a network external interface, an online diagnosis external interface and a power supply external interface; the bus communication interface corresponds to the communication external interface and the online diagnosis external interface respectively.

[0013] Preferably, the online diagnosis external interface can be connected to a fault diagnosis device;

[0014] The communication external interface can be connected to the controller of the vehicle under test;

[0015] The network external interface can be connected to a host computer.

[0016] Preferably, the mainboard further comprises a power supply unit fixed on the main surface of the mainboard, and the power supply unit is used to supply power to the mainboard;

[0017] The real-time processor is connected to the network interface, the bus communication unit and the IO communication unit respectively through the main board body, and can transmit signals with the bus communication unit, the network interface and the IO communication unit respectively;

[0018] The bus communication unit is connected to the communication external interface via the bus communication interface and is capable of transmitting CAN signals and LIN signals to the vehicle controller under test;

[0019] The IO communication unit is connected to the communication external interface via the IO communication interface, and can transmit digital signals and analog signals to the vehicle controller under test.

[0020] Preferably, the communication external interface includes at least a high-voltage CAN interface, a low-voltage CAN interface and a LIN interface;

[0021] The bus communication unit at least includes a high-voltage CAN processing terminal, a low-voltage CAN processing terminal and a LIN processing terminal;

[0022] The high-voltage CAN interface is connected to the high-voltage CAN processing terminal through a switch and a circuit breaker;

[0023] The low-voltage CAN interface is connected to the low-voltage CAN processing end through a switch and a short-circuit device.

[0024] Preferably, the bus communication unit further includes a relay branch and a CAN board branch;

[0025] The relay branch includes a relay board and a terminal resistor connected to each other; one end of the relay branch is configured between the short circuiter and the low-voltage CAN processing end, and the other end of the relay branch is configured between the short circuiter and the high-voltage CAN processing end;

[0026] The relay board can be turned on or off. When the relay board is turned on, the relay branch is connected; when the relay board is turned off, the relay branch is disconnected.

[0027] One end of the CAN card branch is configured between the short circuiter and the low-voltage CAN processing end, and the other end of the CAN card branch is configured between the short circuiter and the high-voltage CAN processing end.

[0028] Preferably, it is characterized in that the manual signal module further includes a low-voltage programmable power supply;

[0029] The low-voltage programmable power supply is used to supply adjustable low-voltage electricity to the multiple analog output units.

[0030] Preferably, in the analog output unit where the analog quantity is voltage, the analog circuit includes an adjustable potentiometer, a switch and an electrical connector, and the electrical connector is connected to the analog output interface.

[0031] On the other hand, this specification also provides a vehicle testing system, including the simulated load device for vehicle testing described in the above aspect.

[0032] Preferably, the vehicle testing system further comprises a host computer, a controller of the vehicle under test and a diagnostic instrument. At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects:

[0033] According to the above content, the simulated load device used for vehicle testing includes a mainboard, a load box and a manual signal module. The mainboard is arranged inside the load box, and includes a mainboard body and a real-time processor, a bus communication unit, and an IO communication unit fixed on the surface of the mainboard body. The surface of the mainboard body is provided with a plurality of mainboard interfaces. The manual signal module includes a plurality of analog output units. The analog output unit includes an analog circuit, an analog output interface and an operating member. The analog circuit is arranged inside the load box, and the analog output interface and the operating member are both arranged on the surface of the load box. The analog quantity includes at least voltage and resistance. The load box includes a housing and a plurality of external interfaces. There is at least one external interface connected to the mainboard, and the at least one external interface can also be detachably connected to the vehicle controller under test and the host computer.

[0034] From the above content, it can be seen that a mainboard is set in the load box, which can set and simulate various simulated loads through the real-time processor, bus communication unit and IO communication unit on the mainboard, so that the load box can output multiple load signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The exemplary embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation of this specification. In the drawings:

[0036] Figure 1 A schematic diagram of the architecture of a simulated load device for vehicle testing provided in one embodiment of this specification;

[0037] Figure 2 A schematic diagram of the architecture of a simulated load device provided in one embodiment of this specification;

[0038] Figure 3 A schematic diagram of a signal flow of a mainboard provided for one embodiment of this specification;

[0039] Figure 4 A schematic diagram of at least a portion of the structure of a simulated load device provided in one embodiment of this specification;

[0040] Figure 5 A schematic diagram of the structure of an analog circuit provided in one embodiment of this specification;

[0041] Figure 6 A schematic diagram of the structure of an analog circuit provided in one embodiment of this specification.

[0042] Description of reference numerals:

[0043] Main board 1; load box 2; manual signal module 3; bus communication interface 11; IO communication interface 12; power interface 13; network interface 14; online diagnostic external interface 21; network external interface 22; power external interface 23; communication external interface 24; power supply unit 15; real-time processor 16; IO communication unit 17; bus communication unit 18; high-voltage CAN interface 111; low-voltage CAN interface 112; LIN interface 113; high-voltage CAN processing terminal 181; low-voltage CAN processing terminal 182; LIN processing terminal 183; switch 91; circuit breaker 92; short-circuit plug 921; banana socket 922; relay board 93; terminal resistor 94; analog output interface 41; measuring hole 42; potentiometer 43; ground wire 44; ideal power supply 45. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of this specification more clear, the technical solutions of this specification will be clearly and completely described below in conjunction with the specific embodiments of this specification and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0045] In the description of the present invention, it should be noted that the term "or" is generally used in a sense including "and / or", unless the content clearly indicates otherwise.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. In addition, in the description of this application, the terms "first," "second," etc. are used only to distinguish descriptions and should not be understood to indicate or imply relative importance.

[0047] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0048] Figure 1 This is a schematic diagram of the architecture of a simulated load device for vehicle testing provided in one embodiment of this specification. Figure 1 As shown, the device includes a main board 1 , a load box 2 and a manual signal module 3 .

[0049] Preferably, the mainboard 1 is disposed inside the load box 2 .

[0050] Preferably, the mainboard 1 includes a mainboard body, and a real-time processor 16, a bus communication unit 18, and an IO communication unit 17 fixed on the surface of the mainboard body.

[0051] Preferably, the surface of the main board body is configured with a plurality of main board 1 interfaces.

[0052] Preferably, the manual signal module 3 includes a plurality of analog output units.

[0053] Preferably, any analog output unit includes an analog circuit, an analog output interface 41 and an operating element, wherein the analog circuit is configured inside the load box 2, and the analog output interface 41 and the operating element are both configured on the surface of the load box 2.

[0054] Preferably, the analog quantity includes voltage, resistance, etc.

[0055] Preferably, the load box 2 includes a shell and a plurality of external interfaces.

[0056] Preferably, among the multiple external interfaces configured on the load box, at least one external interface is connected to the mainboard 1, and this at least one external interface can also be detachably connected to the vehicle controller under test and the host computer. In other words, this external interface is a double-sided interface, connecting to the mainboard 1 and also to other devices such as the vehicle controller under test and the host computer, and is used to transmit data between the mainboard 1 and other devices such as the vehicle controller under test and the host computer.

[0057] According to the above content, the simulated load device used for vehicle testing includes a main board 1, a load box 2 and a manual signal module 3. The main board 1 is arranged inside the load box 2, and includes a main board body and a real-time processor 16, a bus communication unit 18, and an IO communication unit 17 fixed on the surface of the main board body. The surface of the main board body is configured with multiple main board 1 interfaces. The manual signal module 3 includes multiple analog output units. The analog output unit includes an analog circuit, an analog output interface 41 and an operating member. The analog circuit is arranged inside the load box 2, and the analog output interface 41 and the operating member are both arranged on the surface of the load box 2. The analog quantity includes at least voltage and resistance. The load box 2 includes a shell and multiple external interfaces. There is at least one external interface connected to the main board 1, and the at least one external interface can also be detachably connected to the vehicle controller under test and the host computer.

[0058] As can be seen from the above content, a main board 1 is provided in the load box, and various simulated load quantities can be set and simulated through the real-time processor 16, bus communication unit 18 and IO communication unit 17 on the main board 1, so that the load box can output multiple load signals.

[0059] Preferably, the multiple mainboard 1 interfaces at least include a bus communication interface 11 , an IO communication interface 12 , a network interface 14 and a power supply interface 13 .

[0060] Preferably, the plurality of external interfaces include at least a communication external interface 24, a network external interface 22, an online diagnosis external interface 21, and a power supply external interface 23. The bus communication interface 11 corresponds to the communication external interface 24 and the online diagnosis external interface 21, respectively.

[0061] Preferably, the online diagnosis external interface 21 can be connected to a fault diagnosis device (On Board Diagnostics, OBD).

[0062] Preferably, the communication external interface 24 can be connected to the controller of the vehicle under test. Of course, the communication external interface 24 can also be connected to electronic devices such as a host computer and a personal terminal.

[0063] Preferably, the network external interface 22 can be connected to a host computer.

[0064] Figure 2 A schematic diagram of the structure of a simulated load device provided in one embodiment of this specification is shown as follows: Figure 2 As shown, the mainboard 1 is equipped with multiple interfaces such as a bus communication interface 11, an IO communication interface 12, a network interface 14, and a power supply interface 13, while the load box 2 is provided with external interfaces such as a communication external interface 24, a network external interface 22, an online diagnostic external interface 21, and a power supply external interface 23. The bus communication interface 11 is connected to the communication external interface 24 and the online diagnostic external interface 21, respectively. The communication external interface 24 is also connected to the IO communication interface 12, the power supply external interface 23 is connected to the power supply interface 13, and the network external interface 22 is connected to the network interface 14.

[0065] Preferably, the mainboard 1 further includes a power supply unit 15 fixed on the main surface of the mainboard.

[0066] Preferably, the power supply unit 15 is connected to the power interface 13 , can receive the electric energy transmitted by the power external interface 23 and transferred through the power interface 13 , and supply power to the mainboard 1 based on the electric energy.

[0067] Preferably, the power supply unit 15 is capable of converting alternating current into direct current.

[0068] Preferably, the real-time processor 16 is connected to the network interface 14, the bus communication unit 18 and the IO communication unit 17 respectively through the main board body, and can transmit signals with the bus communication unit 18, the network interface 14 and the IO communication unit 17 respectively.

[0069] Preferably, the bus communication unit 18 is connected to the external communication interface via the bus communication interface 11 and can transmit CAN signals and LIN signals to the controller of the vehicle under test.

[0070] Preferably, the IO communication unit 17 is connected to the communication external interface via the IO communication interface 12 and can transmit digital signals and analog signals to the vehicle controller under test.

[0071] Preferably, the IO communication unit 17 can also transmit pulse width modulation (PWM) signals to the controller of the vehicle under test.

[0072] Figure 3 A signal flow diagram of the motherboard 1 is provided for one embodiment of this specification, as shown in FIG. Figure 3As shown, the signal flow between the power supply unit 15, the real-time processor 16, the IO communication unit 17, the bus communication unit 18, the bus communication interface 11, the IO communication interface 12, the power supply interface 13 and the network interface 14 is shown in the figure.

[0073] Preferably, the bus communication external interface 24 includes a high-voltage Controller Area Network (CAN) interface, a low-voltage CAN interface 112 , and a Local Interconnect Network (LIN) interface.

[0074] Preferably, the bus communication unit 18 at least includes a high-voltage CAN processing terminal 181 , a low-voltage CAN processing terminal 182 and a LIN processing terminal 183 .

[0075] Preferably, the high-voltage CAN interface 111 is connected to the high-voltage CAN processing terminal 181 through a switch 91 and a circuit breaker 92 .

[0076] Preferably, the low-voltage CAN interface 112 is connected to the low-voltage CAN processing terminal 182 via a switch 91 and a circuit breaker 92 .

[0077] Preferably, the external communication interface 24 can be connected to the vehicle controller under test via a twisted pair cable, with one of the two sub-wires of the twisted pair cable connected to the high-voltage CAN interface 111 and the other connected to the low-voltage CAN interface 112. Of course, the external communication interface 24 can also be connected to the vehicle controller under test via other cables at the same time, thereby connecting the LIN interface 113 to the vehicle controller under test.

[0078] Preferably, the LIN interface 113 is connected to the LIN processing terminal 183 via a switch 91 and a shunt 92 .

[0079] Preferably, the bus communication unit 18 further includes a relay branch and a CAN board branch.

[0080] Preferably, the relay branch includes a relay board 93 and a terminal resistor 94 connected to each other.

[0081] Preferably, one end of the relay branch is configured between the short circuit 92 and the low-voltage CAN processing terminal 182 , and the other end of the relay branch is configured between the short circuit 92 and the high-voltage CAN processing terminal 181 .

[0082] Preferably, the relay board 93 can be turned on or off. When the relay board 93 is turned on, the relay branch is connected; when the relay board 93 is turned off, the relay branch is disconnected.

[0083] Preferably, when the relay board 93 is turned on, the relay branch where the terminal resistor 94 is located is turned on, and the terminal resistor 94 can participate in the load simulation process. That is, there is no need to connect an external terminal resistor 94 during the test, which improves operability and convenience.

[0084] Preferably, the terminal resistor 94 is an adjustable resistor.

[0085] Figure 4 A schematic diagram of at least a portion of the structure of a simulated load device provided in one embodiment of this specification is shown as follows: Figure 4 As shown, the high-voltage CAN interface 111 is connected to the high-voltage CAN processing terminal 181 through a switch 91 and a short-circuit breaker 92, the low-voltage CAN interface 112 is connected to the low-voltage CAN processing terminal 182 through a switch 91 and a short-circuit breaker 92, and the LIN interface 113 is connected to the LIN processing terminal 183 through a switch 91 and a short-circuit breaker 92. The short-circuit breaker 92 includes a banana socket 922 and a short-circuit plug 921. Between the branch corresponding to the high-voltage CAN interface 111 and the branch corresponding to the low-voltage CAN interface 112, there is also a relay branch including a relay board 93 and a terminal resistor 94, as well as a board branch including a CAN board. Among them, when connecting the CAN board, the connecting line is connected to the No. 2 hole and the No. 7 hole of the CAN board respectively, as shown in the figure.

[0086] Preferably, one end of the CAN card branch is configured between the shunt 92 and the low-voltage CAN processing terminal 182 , and the other end of the CAN card branch is configured between the shunt 92 and the high-voltage CAN processing terminal 181 .

[0087] Preferably, the manual signal module 3 further includes a low-voltage programmable power supply.

[0088] Preferably, the low-voltage programmable power supply is used to supply adjustable low-voltage electricity to the multiple analog output units.

[0089] Preferably, in the analog output unit where the analog quantity is voltage, the analog circuit includes an adjustable potentiometer 43 and a switch 91. Further preferably, the switch 91 is connected to the analog output interface 41. Further preferably, a measuring hole 42 is configured between the switch 91 and the analog output interface 41.

[0090] Figure 5 as well as Figure 6 are schematic diagrams of the structure of the analog circuit provided by an embodiment of this specification, such as Figure 5 as well as Figure 6 As shown, the analog output interface 41, the adjustable potentiometer 43, the switch 91, and the measuring hole 42 are connected to each other. Figure 5 The corresponding analog quantity is voltage. Figure 6The corresponding analog quantity is resistance. The ideal power supply 45 is a 5V DC power supply.

[0091] The above is a simulated load device for vehicle testing provided in one or more embodiments of this specification. Based on the same idea, this specification also provides a vehicle testing system.

[0092] Preferably, the vehicle testing system includes the simulated load device for vehicle testing provided by any one of the above embodiments.

[0093] Preferably, the vehicle testing system further includes a host computer, a controller of the vehicle under test, and a diagnostic instrument.

[0094] Preferably, the host computer, the controller of the vehicle under test and the diagnostic instrument can all be connected to the simulated load device applied to the vehicle test, thereby realizing the test of the controller of the vehicle under test.

[0095] It should be noted that all actions of acquiring signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0096] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0097] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0098] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of this application.

Claims

1. A simulated load device for vehicle testing, characterized in that: Including main board, load box and manual signal module; The mainboard is arranged inside the load box, and includes a mainboard body and a real-time processor, a bus communication unit, and an IO communication unit fixed on the surface of the mainboard body; the surface of the mainboard body is provided with a plurality of mainboard interfaces; The manual signal module includes a plurality of analog output units, each of which includes an analog circuit, an analog output interface, and an operating element. The analog circuit is disposed inside the load box, and the analog output interface and the operating element are both disposed on the surface of the load box. The analog quantity includes at least voltage and resistance. The load box includes a shell and a plurality of external interfaces; There is at least one external interface connected to the mainboard, and can be detachably connected to the vehicle controller under test and the host computer.

2. The simulated load device according to claim 1, characterized in that: The plurality of motherboard interfaces include at least a bus communication interface, an IO communication interface, a network interface, and a power supply interface; The multiple external interfaces include at least a communication external interface, a network external interface, an online diagnosis external interface and a power supply external interface; the bus communication interface corresponds to the communication external interface and the online diagnosis external interface respectively.

3. The simulated load device according to claim 2, characterized in that: The online diagnosis external interface can be connected to a fault diagnosis device; The communication external interface can be connected to the controller of the vehicle under test; The network external interface can be connected to a host computer.

4. The simulated load device according to claim 2, characterized in that: The mainboard further includes a power supply unit fixed on the main surface of the mainboard, and the power supply unit is used to supply power to the mainboard; The real-time processor is connected to the network interface, the bus communication unit and the IO communication unit respectively through the main board body, and can transmit signals with the bus communication unit, the network interface and the IO communication unit respectively; The bus communication unit is connected to the communication external interface via the bus communication interface and is capable of transmitting CAN signals and LIN signals to the vehicle controller under test; The IO communication unit is connected to the communication external interface via the IO communication interface, and can transmit digital signals and analog signals to the vehicle controller under test.

5. The simulated load device according to any one of claims 2 to 4, characterized in that: The communication external interface includes at least a high-voltage CAN interface, a low-voltage CAN interface and a LIN interface; The bus communication unit at least includes a high-voltage CAN processing terminal, a low-voltage CAN processing terminal and a LIN processing terminal; The high-voltage CAN interface is connected to the high-voltage CAN processing terminal through a switch and a circuit breaker; The low-voltage CAN interface is connected to the low-voltage CAN processing end through a switch and a short-circuit device.

6. The simulated load device according to claim 5, characterized in that: The bus communication unit also includes a relay branch and a CAN board branch; The relay branch includes a relay board and a terminal resistor connected to each other; one end of the relay branch is configured between the short circuiter and the low-voltage CAN processing end, and the other end of the relay branch is configured between the short circuiter and the high-voltage CAN processing end; The relay board can be turned on or off. When the relay board is turned on, the relay branch is turned on. When the relay board is turned off, the relay branch is disconnected; One end of the CAN card branch is configured between the short circuiter and the low-voltage CAN processing end, and the other end of the CAN card branch is configured between the short circuiter and the high-voltage CAN processing end.

7. The simulated load device according to any one of claims 1 to 4, characterized in that: The manual signal module also includes a low-voltage programmable power supply; The low-voltage programmable power supply is used to supply adjustable low-voltage electricity to the multiple analog output units.

8. The simulated load device according to any one of claims 1 to 4, characterized in that: In the analog output unit where the analog quantity is voltage, the analog circuit includes an adjustable potentiometer, a switch and an electrical connector, and the electrical connector is connected to the analog output interface.

9. A vehicle testing system, characterized in that: A simulated load device for vehicle testing comprising the method according to any one of claims 1 to 8.

10. The vehicle testing system according to claim 9, characterized in that: The vehicle testing system further comprises a host computer, a tested vehicle controller and a diagnostic instrument.

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