Vehicle test bench and test system

Abstract

The embodiment of the utility model discloses a test bench and a test system of a vehicle. The test bench comprises a first interface, a relay control module, a communication interface module and a power supply module. The first interface of the test bench is connected with test equipment; the communication interface module comprises N communication interfaces which are connected in parallel; the relay control module comprises M relays which are connected in parallel; m and N are integers greater than 1; the first end of each relay in the M relays is connected with the first interface; the second end of each relay in the M relays is connected with the first ends of the N communication interfaces; the second ends of the N communication interfaces are connected with a to-be-tested sample piece of at least one vehicle; the power supply module is respectively connected with the relay control module, the communication interface module and the sample piece to be tested. And the test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile, especially a test bench and test system of vehicle. BACKGROUND

[0002] In the automobile field, the network test of the domain controller is generally completed by manual test.

[0003] With the increasing functions of the domain controller, the domain controller is connected with a large number of interactive controllers, involves frequent interactive functions, has a large amount of test content, and the test operation is frequent, so the test period is long. The manual test has low efficiency and cannot meet the actual demand. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a test bench and test system of vehicle. The test efficiency is improved.

[0005] The scheme of the utility model is realized as follows:

[0006] Firstly, the utility model provides a test bench of vehicle, which comprises a first interface, a relay control module, a communication interface module and a power module. The first interface of the test bench is connected with a test device. The communication interface module comprises N parallel communication interfaces, and the relay control module comprises M parallel relays. M and N are both integers greater than 1. The first end of each relay in the M relays is connected with the first interface respectively. The second end of each relay in the M relays is connected with the first end of the N communication interfaces respectively. The second end of the N communication interfaces is connected with at least one vehicle to be tested. The power module is connected with the relay control module, the communication interface module and the vehicle to be tested respectively.

[0007] In some embodiments, the first test path of the vehicle to be tested comprises the first interface, the on-state relay in the relay control module, the on-state communication interface in the communication interface module connected with the on-state relay and the vehicle to be tested in sequence. The second test path of the vehicle to be tested comprises the vehicle to be tested, the on-state communication interface in the communication interface module connected with the on-state relay, the on-state relay in the relay control module and the first interface in sequence.

[0008] In some embodiments, the N communication interfaces include at least two of the following interfaces: a Controller Area Network (CAN) communication interface, an On-Board Diagnostics (OBD) communication interface, an Ethernet (ETH) communication interface, a Local Interconnect Network (LIN) communication interface, and an Input / Output (IO) communication interface.

[0009] In some embodiments, the CAN communication interface includes at least one of the following interfaces: a remote communication control CAN interface, a power control CAN interface, a chassis control CAN interface, a cabin control CAN interface, a private network control CAN interface, a diagnosis control CAN interface, a vehicle body control CAN interface, and a reserved CAN interface; the ETH communication interface includes at least one of the following interfaces: a cabin domain control ETH interface, a remote communication control ETH interface, a whole vehicle control ETH interface; the LIN communication interface includes at least one of the following interfaces: a window control LIN interface, a door control LIN interface, a brake control LIN interface, and a reserved LIN interface.

[0010] In some embodiments, the relay control module is a relay card; the relay card integrates M relays.

[0011] In some embodiments, the relay control module includes M relays and M switches; a first end of each of the M relays is connected to a first end of each of the M switches in one-to-one correspondence; a second end of each of the M switches is connected to the first interface.

[0012] In some embodiments, the M switches include one or more switches for door lock control function, one or more switches for light control function, one or more switches for wiper control function, one or more switches for rearview mirror control function, and one or more reserved switches.

[0013] In some embodiments, the power module includes a first power supply and a second power supply; the output of the first power supply is alternating current, and the output of the second power supply is direct current; the first power supply is connected to the relay control module and the communication interface module; the second power supply is connected to the relay control module, the communication interface module, and the to-be-tested sample.

[0014] In some embodiments, the first interface is any one of the following: an Ethernet interface, a Recommended Standard 485 (RS485) interface, a registered jack interface, and a Universal Serial Bus (USB) interface.

[0015] In a second aspect, the utility model also provides a vehicle's test system, test system includes the host computer, test equipment, test bench and the sample piece to be measured connected in turn, test bench is any one test bench provided in above-mentioned first aspect.

[0016] For the utility model provides a vehicle's test bench, test bench includes first interface, relay control module, communication interface module and power module, test bench's first interface is connected with test equipment, communication interface module includes the parallel connection of N communication interfaces, relay control module includes the parallel connection of M relays, M and N are all integers greater than 1, the first end of each relay in M relays is connected with first interface respectively, the second end of each relay in M relays is connected with the first end of N communication interfaces respectively, the second end of N communication interfaces is connected with the sample piece to be measured of at least one vehicle, power module is connected with relay control module, communication interface module and the sample piece to be measured respectively.

[0017] It can be seen that: for the scheme of the utility model, the first interface of the test bench is connected with the test equipment, so that the test signal sent by the test equipment can be received, the M relays in the relay control module are connected with the first interface respectively, connected with the N communication interfaces in the communication interface module through the M relays, and the test signal is sent to the sample piece to be measured for testing through the N communication interfaces. On the one hand, automatic testing can be realized through the cooperation of the test equipment, the first interface in the test bench, the relay control module, the communication interface module and the sample piece to be measured, which improves the test efficiency compared with manual testing. On the other hand, the communication interface module of the test bench includes N communication interfaces, which realizes network testing of N communication interfaces at the same time, further improves the test efficiency, and can control which communication interfaces are turned on and which tests are realized through the relays in the relay control module, which is highly configurable and more in line with actual needs. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The first optional structure diagram of the vehicle's test bench provided by the utility model embodiment is shown in the figure.

[0019] Figure 2 The second optional structure diagram of the vehicle's test bench provided by the utility model embodiment is shown in the figure.

[0020] Figure 3A third optional structural schematic view of the test bench of the vehicle is provided for the embodiment of the utility model;

[0021] Figure 4 A fourth optional structural schematic view of the test bench of the vehicle is provided for the embodiment of the utility model;

[0022] Figure 5 A fifth optional structural schematic view of the test bench of the vehicle is provided for the embodiment of the utility model;

[0023] Figure 6 A sixth optional structural schematic view of the test bench of the vehicle is provided for the embodiment of the utility model;

[0024] Figure 7 A seventh optional structural schematic view of the test bench of the vehicle is provided for the embodiment of the utility model;

[0025] Figure 8 An eighth optional structural schematic view of the test bench of the vehicle is provided for the embodiment of the utility model;

[0026] Figure 9 An optional structural schematic view of the external structure of the test bench is provided for the embodiment of the utility model;

[0027] Figure 10 An optional structural schematic view of the input circuit principle of the test bench is provided for the embodiment of the utility model;

[0028] Figure 11 An optional structural schematic view of the front view of the test bench is provided for the embodiment of the utility model;

[0029] Figure 12 An optional structural schematic view of the left view and the right view of the test bench is provided for the embodiment of the utility model;

[0030] Figure 13 An optional principle structural schematic view of the IO simulation circuit is provided for the embodiment of the utility model;

[0031] Figure 14 An optional structural schematic view of the principle of the to-be-measured piece wake-up simulation circuit is provided for the embodiment of the utility model;

[0032] Figure 15 An optional structural schematic view of the principle of the low-side driving DTC simulation circuit is provided for the embodiment of the utility model;

[0033] Figure 16 An optional structural schematic view of the principle of the high-side driving / bridge driving DTC simulation circuit is provided for the embodiment of the utility model;

[0034] Figure 17 An optional structural schematic diagram of the HDIDTC analog circuit principle provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the following will be combined with the drawings in the embodiment of the utility model, and the specific technical scheme of the application will be further described. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0036] In the following description, "some embodiments" are described, which describe a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subset of all possible embodiments, and can be combined with each other without conflict.

[0037] In the following description, the terms "first, second, third" are only distinguished from different objects, and do not represent the specific order of the objects, and do not have the limitation of the order. It can be understood that "first, second, third" can be interchanged in specific order or sequence as allowed, so that the embodiment of the utility model described here can be implemented in an order other than that illustrated or described here.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used herein are only for the purpose of describing the embodiments of the utility model, and are not intended to limit the utility model.

[0039] Next, each embodiment of the test bench and test system of the vehicle provided by the embodiment of the utility model is described.

[0040] In the first aspect, the utility model provides a test bench of vehicle.

[0041] Figure 1 The structural schematic diagram of the test bench of vehicle provided by the embodiment of the utility model is shown as Figure 1 The test bench 10 includes a first interface 101, a relay control module 102, a communication interface module 103 and a power module 104.

[0042] The first interface 101 of the test bench 10 is connected with the test equipment 20;

[0043] The communication interface module 103 includes N communication interfaces 103A in parallel, and the relay control module 102 includes M relays 102A in parallel; M and N are both integers greater than 1;

[0044] The first end of each of the M relays 102A is connected to the first interface 101 respectively; the second end of each of the M relays 102A is connected to the first end of the N communication interfaces 103A respectively; the second end of the N communication interfaces 103A is connected to the to-be-tested sample 30 of the at least one vehicle;

[0045] The power module 104 is connected to the relay control module 102, the communication interface module 103 and the to-be-tested sample 30 respectively.

[0046] For the first interface 101:

[0047] The first interface 101 is connected to the test equipment 20, so that the test signal sent by the test equipment 20 can be received through the first interface 101.

[0048] The type of the test equipment 20 is not limited in the embodiments of the utility model, and can be configured according to actual needs. For example, the test equipment 20 can include but is not limited to one or more of the following: CAN open environment (CANoe) equipment, CAN interface module (CANifier) equipment and OBD test equipment and the like.

[0049] The type of the test signal is not limited in the embodiments of the utility model, and can be configured according to actual needs. For example, the test signal can be voltage, current, switch signal, control signal and the like.

[0050] The first interface 101 is used for receiving the test signal. The type of the first interface 101 is not limited in the embodiments of the utility model, and can be configured as an interface that can receive the above-mentioned test signal according to actual needs.

[0051] In a possible implementation, the first interface 101 can be any of the following: an Ethernet interface, a recommended standard RS485 interface, a registered jack interface and a universal serial bus (USB) interface.

[0052] For the relay control module 102:

[0053] The relay control module 102 is connected to the communication interface module 103, and the relay control module is used for controlling the communication interface 103A that is turned on in the communication interface module 103. The control here can be program-based automatic control of the relay, can also be non-automatic control of manually dialing a switch to control the relay to be turned on, of course, can also be partially automatic control and partially non-automatic control, and the specific configuration can be flexible according to actual needs.

[0054] The relay control module 102 at least includes M relays in parallel.

[0055] The embodiment of the utility model does not limit the value of M, and can be configured according to actual requirements.

[0056] The first end of each of the M relays 102A is connected to the first interface 101 respectively.

[0057] The relay control module includes M relays 102A.

[0058] The connection between the relay control module 102 and the communication interface module 103 can realize that the test signal received by the first interface 101 is sent to the communication interface 103A connected to the on relay 102A.

[0059] It should be noted that one relay can control the conduction of one or more communication interfaces, and multiple relays can also control the conduction of one communication interface.

[0060] For the communication interface module 103:

[0061] The communication interface module 103 includes N parallel communication interfaces 103A.

[0062] The embodiment of the utility model does not limit the type of communication interface 103A, and can be configured according to actual requirements.

[0063] The second end of each of the M relays 102A is connected to the first end of the N communication interfaces 103A respectively.

[0064] Thus, the test signal is transmitted to the communication interface 103A.

[0065] The second end of the N communication interfaces 103A is connected to at least one vehicle to be tested sample 30.

[0066] The embodiment of the utility model does not limit the number and type of the to-be-tested sample 30, and can be configured according to actual requirements. The to-be-tested sample 30 here can be one or more.

[0067] In a possible implementation, the to-be-tested sample can be a domain controller (domain controller plus gateway). The domain control here can include, but is not limited to, at least one of the following: a vehicle body domain controller, an automatic driving domain controller, a cockpit domain controller, a chassis domain controller, and a power domain controller.

[0068] For the value relationship of M and N, the communication interface module 103 includes N communication interfaces 103A, and the relay control module 102 includes M relays 102A. Wherein, M can be equal to N, that is, one relay controls the conduction of one communication interface 103A, that is, one relay controls the network test of one communication type; M can be less than N, that is, one relay can control the conduction of multiple communication interfaces 103A, that is, one relay can control the network test of multiple communication types; M can also be greater than N, that is, one communication interface corresponds to the control of multiple relays, and here one relay can be configured for the test of one function of one communication type, for example, one relay is configured for the door control of LIN communication, and one relay is configured for the window control of LIN communication.

[0069] For the power module 104:

[0070] The power module 104 is connected with the relay control module 102, the communication interface module 103, and the to-be-tested sample 30 respectively. Thus, the relay control module 102, the communication interface module 103, and the to-be-tested sample 30 are powered by the power module 104.

[0071] The specific type of the power module 104 is not limited in the embodiment of the utility model, and can be configured according to actual needs.

[0072] It can be seen that: for the scheme of the utility model, the first interface of the test bench is connected with the test equipment, so as to receive the test signal sent by the test equipment, the M relays in the relay control module are connected with the first interface respectively, the M relays are connected with the N communication interfaces in the communication interface module, and the test signal is sent to the to-be-tested sample through the N communication interfaces for testing. On the one hand, automatic testing can be realized through the cooperation of the test equipment, the first interface in the test bench, the relay control module, the communication interface module, and the to-be-tested sample, which improves the test efficiency compared with manual test; on the other hand, the communication interface module of the test bench includes N communication interfaces, which can realize the network test of N communication interfaces at the same time, further improving the test efficiency; and the conduction relay in the relay control module and the communication interface between the conduction relay and the conduction relay can be configured according to actual needs, realizing the required test, having strong configurability, and being more in line with the characteristics of actual needs.

[0073] Next, the test path of the test bench is described.

[0074] Reference Figure 2 As shown in the content, in one possible implementation, the first test path of the to-be-tested sample 30 includes, in sequence, the first interface 101, the on-off relay 102B in the relay control module 102, the on-off communication interface 103B in the communication interface module 103 connected with the on-off relay 102B, and the to-be-tested sample 30.

[0075] The test signal passes through, in sequence, the first interface 101 of the first test path, the on-off relay 102B in the relay control module 102, the on-off communication interface 103B in the communication interface module 103 connected with the on-off relay 102B, and reaches the to-be-tested sample 30.

[0076] In another possible implementation, the second test path of the to-be-tested sample 30 includes, in sequence, the to-be-tested sample 30, the on-off communication interface 103B in the communication interface module 103 connected with the on-off relay 102B, the on-off relay 102B in the relay control module 102, and the first interface 101.

[0077] After the to-be-tested sample 30 receives the test signal, a feedback signal is generated according to the test signal, and the feedback signal passes through, in sequence, the on-off communication interface 103B in the communication interface module 103 connected with the on-off relay 102B, the on-off relay 102B in the relay control module 102, and the first interface 101 of the second test path, and is transmitted to the test device 20, so that the test device 20 determines the test result according to the feedback signal.

[0078] Through the first test path, the to-be-tested sample 30 realizes the reception of the test signal, and through the second test path, the to-be-tested sample 30 can realize the feedback of the test signal. Through the first test path and the second test path, various types of tests can be realized.

[0079] In practice, the sequential test can correspond to the transmission and reception of one test signal, or can correspond to the transmission and reception of multiple test signals, and the specific configuration of the test device and the program in the upper computer can be configured according to actual needs.

[0080] The embodiments of the utility model do not limit the test type, which can be configured according to actual needs. The test type can include but is not limited to one or more of the following: network communication test, function test, safety test, etc. For example, whether normal signal reception and transmission can be tested, whether the control function is normal (such as light control, door control, window control function, etc.), whether the data transmission meets the safety requirements, etc.

[0081] In the embodiment, the first test path and the second test path are constructed, and various types of tests on the to-be-tested sample are realized through the first test path and the second test path. It has the characteristics of simple and reliable implementation logic.

[0082] Next, the communication interface module 103 is described.

[0083] The communication interface module 103 includes N communication interfaces, as shown in Figure 3 The N communication interfaces 103A include at least two of the following interfaces: a controller area network (CAN) communication interface 1031, an on-board diagnostics (OBD) communication interface 1032, an Ethernet (ETH) communication interface 1033, a local interconnect network (LIN) communication interface 1034, and an input / output (IO) communication interface 1035.

[0084] The specific interface types included in the N communication interfaces can be configured according to actual needs from among the commonly used CAN communication interface, OBD communication interface, ETH communication interface, LIN communication interface, and IO communication interface in vehicles.

[0085] In practice, the implementation of various functions of different test samples in a vehicle is not achieved through a single network communication, and coordination of various networks is needed to achieve multiple functions. In the embodiments of the present application, multiple types of communication interfaces are configured, which can meet the needs of various function tests of vehicle equipment.

[0086] The configuration of multiple types of communication interfaces can simultaneously achieve network testing of one or more communication types for multiple test samples, or can also achieve network testing of multiple communication types for one domain controller.

[0087] Next, the CAN communication interface 1031, OBD communication interface 1032, ETH communication interface 1033, LIN communication interface 1034, and IO communication interface 1035 are described.

[0088] In one possible implementation, as shown in Figure 4 The CAN communication interface 1031 includes at least one of the following interfaces: a remote communication control CAN interface 10311, a power control CAN interface 10312, a chassis control CAN interface 10313, a cabin control CAN interface 10314, a private network control CAN interface 10315, a diagnosis control CAN interface 10316, a vehicle body control CAN interface 10317, and a reserved CAN interface 10318.

[0089] In this way, different CAN communication interfaces can be configured for different functions, so that simultaneous testing of multiple CAN communication related functions can be achieved.

[0090] The ETH communication interface 1033 includes at least one of the following interfaces: an ETH interface 10331 of cabin domain control, an ETH interface 10332 of remote communication control, and an ETH interface 10333 of whole vehicle control.

[0091] In this way, different ETH interfaces can be configured for different functions, so that the functions related to multiple ETH communications can be tested at the same time.

[0092] The LIN communication interface 1034 includes at least one of the following interfaces: a window control LIN interface 10341, a door control LIN interface 10342, a brake control LIN interface 10343, and a reserved LIN interface 10344.

[0093] In this way, different LIN interfaces can be configured for different functions, so that the functions related to multiple LIN communications can be tested at the same time.

[0094] Currently, the OBD communication interface 1032 and the IO communication interface 1035 can also be classified according to functions, and the implementation of the CAN communication interface can be referred to, which will not be described here.

[0095] Next, the relay control module 102 is described.

[0096] The relay control module 102 can include, but is not limited to, at least one of the following implementation manners.

[0097] Implementation manner 1: a relay control module 102 based on program control;

[0098] Implementation manner 2: a relay control module 102 based on switch control.

[0099] Next, the structure of the relay control module 102 based on program control in the implementation manner 1 is described.

[0100] Referring to Figure 5 As shown in the figure, the relay control module 102 is a relay card 1021, and M relays are integrated on the relay card.

[0101] The on-off conditions of the relays are defined in the control program of the upper computer, and after the program is sent to the test equipment, the on-off signals sent by the test equipment are used to control the on-off of the relays on the relay card, so as to realize the test of the communication interface corresponding to the on relays.

[0102] Next, the structure of the relay control module 102 based on switch control in the implementation manner 2 is described. Referring to Figure 6 As shown in the figure, the relay control module 102 includes M relays 102A and M switches 102C.

[0103] The first end of each of the M relays 102A is connected to the first end of each of the M switches 102C in one-to-one correspondence.

[0104] The second end of each of the M switches 102C is connected to the first interface 101.

[0105] The utility model implementation switch 102C's type is not limited, can be configured according to actual demand.For example, switch 102C can be knob switch, rotary switch, button switch and so on.

[0106] By controlling the state of the M switches 102C, the conduction and disconnection of the M relays 102A are controlled, thereby realizing the test of the communication interface corresponding to the conduction relay.

[0107] Compared with implementation mode 2, implementation mode 1 has the characteristics of high automation; compared with implementation mode 1, implementation mode can directly realize the modification of the test by manually dialing the switch without modifying the program, and has the characteristics of simple and convenient modification.

[0108] In practice, both can also be configured in the test bench, and users can select the required implementation mode in the test bench according to actual test requirements.

[0109] Next, the M switches are described.

[0110] In a possible implementation mode, referring to the content shown in Figure 7 The M switches 102C include one or more switches 102C1 with door lock control function, one or more switches 102C2 with light control function, one or more switches 102C3 with wiper control function, one or more switches 102C4 with rearview mirror control function, and one or more switches 102C5 reserved.

[0111] In this embodiment, one relay corresponds to one function, and one switch corresponds to one function, so that the test of certain functions is realized by the on-off of the switch. It has the characteristics of simple implementation logic and convenient implementation process.

[0112] Next, the power module 104 is described.

[0113] In a possible implementation mode, referring to the content shown in Figure 8 The power module includes a first power supply 1041 and a second power supply 1042; the output of the first power supply 1041 is alternating current, and the output of the second power supply 1042 is direct current.

[0114] The first power supply 1041 is connected with the relay control module 102 and the communication interface module 103 respectively; and is used for supplying power for the relay control module 102 and the communication interface module 103.

[0115] The second power supply 1042 is connected with the relay control module 102, the communication interface module 103 and the sample 30 to be tested respectively; and is used for supplying power for the relay control module 102, the communication interface module 103 and the sample 30 to be tested.

[0116] The output voltage of the first power supply 1041 and the second power supply 1042 is not limited in the embodiment of the utility model, and can be configured according to actual requirements.

[0117] For example, the output of the first power supply can be AC 220V, and the output of the second power supply can be DC 12V. The first power supply can be a mains supply or the output of an AC machine, and the second power supply can be a DC power supply module or a power conversion module connected with the first power supply.

[0118] In the embodiment, various power supply requirements can be met through the first power supply and the second power supply.

[0119] It should be noted that the test bench can also include a fan, a display screen, a heat dissipation hole, a hand-held device and the like, which are not listed one by one here.

[0120] Next, taking the sample to be tested as a domain controller as an example, the test bench and the test process of the vehicle provided by the utility model are described.

[0121] The domain control (Body Domain Controller, BDC) 2.0 (vehicle body controller + gateway) (equivalent to the above-mentioned sample to be tested) is connected with a large number of interactive controllers and involves frequent interactive functions, and the priority of user attention is high. Therefore, the test content volume is large, the test operation is frequent, and the test cycle is long. Therefore, the manual test efficiency is low, and the product delivery is blocked, and the disadvantages gradually appear, and the test pressure is multiplied.

[0122] To solve the above problems, the embodiment of the utility model provides a domain control BDC2.0 (vehicle body controller + gateway) network test system, which comprises a host computer, a test device, a test bench (program-controlled power supply, control panel, relay group module and the like), and a sample to be tested (domain control BDC2.0).

[0123] The test bench body comprises a relay group, a knob switch, an integrated connection wire harness and a plurality of actuator hardware modules. Through the computer control host program, the program control and test operation of each actuator and the measured object of the system are carried out, the signal transmission and reception between the controller and each actuator are completed through the integrated connection wire harness, the network test automation is realized, the traditional manual test mode is replaced, the test efficiency is significantly improved, and the research and development cost is reduced, the test period is shortened, the function demand is covered, the test efficiency is improved, and the domain control network test demand is efficiently and lowly consumed.

[0124] The utility model solves the problem of a kind of domain control BDC2.0 test bench, through the computer control host program, the program control and test operation of each actuator and the measured object of the system are carried out, the signal transmission and reception between the controller and each actuator are completed through the integrated connection wire harness, the network test automation is realized, the traditional manual test mode is replaced, the test efficiency is significantly improved, and the research and development cost is reduced, the test period is shortened, the function demand is covered, the test efficiency is improved, and the domain control BDC 2.0 network test demand is efficiently and lowly consumed.

[0125] The external structure of the test bench can refer to the content shown in Fig. 9. The input circuit principle of the test bench can refer to the content shown in Fig. 10, which at least includes 220V AC 1001, power supply one 1002, power supply two 1003 and relay board card 1004. Figure 10

[0126] 220V AC 1001 is used to provide short-circuit power supply for simulating fault state (high power is required for simulating fault state) ; power supply two 1003 is used to provide power supply for the measured sample (Device Under Test, DUT) ; relay board card 1004 is used to provide short-circuit, open-circuit and other types of faults for simulating faults; and the bench strategy controller provides algorithm support for board card control.

[0127] The front view of the test bench can refer to the content shown in Fig. 11, which includes door lock knob 1101, light knob 1102, reserved knob 1103, wiper knob 1104, interlock generator (IG) relay knob 1105, rearview mirror knob 1106, RS485 interface 1107, IO interface 1108, ETH interface 1109, fan button 1110, CAN interface 1111, LIN interface 1112 and power supply interface 1113. Figure 11

[0128] ​​RS485 interface 1107 is used for connecting test equipment, IO interface 1108 is connected to the IO control line of the test equipment, ETH_100_OBD is connected to the test equipment. ETH1_1000 is connected to the CDC Ethernet interface of the lower hanging piece, ETH2_1000 is connected to the TBOX Ethernet interface of the lower hanging piece, ETH3_1000 is connected to the VCU Ethernet interface of the lower hanging piece, fan button 1110 controls the internal heat dissipation of the console,

[0129] The left view and the right view of the test bench can refer to the contents shown in Figure 12 Figure 12 The left part is the left view, including: fan exhaust port 1201 and left part of portable device 1202; the right part is the right view, including: heat dissipation hole 1203, right part of portable device 1204, 12V power supply 1205 and power line interface 1206.

[0130] The test bench opens a USB connection port, and the NM relay is integrated inside the console. The USB connects the NM relay, so that the host computer can control the on-off of the relay through the USB connection port to realize the switching of the output state, so that the current of the corresponding wire harness can be controlled to realize automatic control.

[0131] Next, the test interface is described

[0132] The domain control BDC2.0 (vehicle body controller + gateway) network test equipment (equivalent to the above test bench) has the following multiple network communication type interfaces:

[0133] CAN / CANFD interface: meets the CAN communication between domain control BDC2.0 (vehicle body controller + gateway) and lower hanging controller; OBD interface: meets the 100M BASE-TX communication between domain control BDC2.0 (vehicle body controller + gateway) and lower hanging controller; ETH interface: meets the 1000M BASE-T1 communication between domain control BDC2.0 (vehicle body controller + gateway) and lower hanging controller; LIN interface: meets the LIN communication between domain control BDC2.0 (vehicle body controller + gateway) and lower hanging controller.

[0134] The above-mentioned multiple network communication type interfaces can complete the following multiple network test contents, specifically including: network diagnosis involving service class test, including but not limited to session control, device restart, fault reading and clearing, communication control, etc.; network communication involving CAN / CANFD communication routing test, including but not limited to gateway and vehicle body controller, gateway and lower hanging piece controller; network communication involving LIN communication test, including but not limited to gateway and vehicle body controller, gateway and lower hanging piece controller; network diagnosis involving IO routine control test, wherein the principle structure of the IO simulation circuit can refer to the contents shown in Figure 13 Figure 13 ​​As shown, for example, if a J1:2 fault of the first row needs to be tested, it can be controlled by controlling the on-off of the K2-33 relay port. Network management involves AUTOSAR, OSEK network testing, automatic serial port control through relays, including but not limited to sleep, wake-up, state machine jump of the DUT under test. The DUT is directly connected to the test equipment through the RS 485 interface of the test bench, and the signal is transmitted to the test bench through PC software, and the test bench transmits the signal to the DUT.

[0135] The principle structure of the wake-up simulation circuit of the DUT under test can be referred to as shown in Figure 14 For example, if the DUT needs to be woken up through the J5-16 interface, the signal path is closed or opened by controlling the on-off of K2-1 through the program. Network diagnosis involves Diagnostic Trouble Code (DTC) network testing, automatic serial port control through relays, including but not limited to open circuit, short circuit, BUSOFF, sticking, node loss, etc. The principle diagram of part of the DTC simulation circuit is shown in Figures 15-17 .

[0136] The principle of the low-side drive DTC simulation circuit can be referred to as shown in Figure 15 If the fault type is a low-side drive DTC simulation, when we want to trigger a DTC, then control the toggle switch-S2. The principle of the high-side drive / bridge drive DTC simulation circuit can be referred to as shown in Figure 16 If the fault type is a high-side drive / bridge drive DTC simulation, when we want to trigger a DTC, then control the toggle switch-S3. The principle of the HDI DTC simulation circuit can be referred to as shown in Figure 17 If the fault type is an HDI DTC simulation, when we want to trigger a DTC, then control the toggle switch-S4.

[0137] As can be seen, the domain control BDC2.0 (body controller + gateway) network test equipment involves the connection of the overall current voltage display screen to the test bench, the connection of the test bench to the corresponding pins of the test sample, and the connection of the corresponding pins to the Light Emitting Diode (LED) display screen. When the test sample is in different output states, the corresponding pins will output different voltage values, and the current state can be judged by checking the voltage value change whether the state is switched normally; this test bench can simulate multiple faults and test in multiple threads. Different fault simulations are connected to the test bench and the test sample through different connection harnesses, so there is no interference, which significantly improves the test efficiency, thereby reducing the research and development cost, shortening the test period, covering the functional requirements, improving the test efficiency, and efficiently and lowly completing the domain control BDC2.0 (body controller + gateway) network test requirements.

[0138] Thus, the network test content of the domain control BDC2.0 (vehicle body controller + gateway) is solved, network test automation is realized, the traditional manual test mode is replaced, test efficiency is significantly improved, and thus, research and development costs are reduced, test periods are shortened, function requirements are covered, test efficiency is improved, and the network test requirement of the domain control BDC2.0 (vehicle body controller + gateway) is efficiently and lowly consumed. Compared with the prior art, the bench test universality is expanded, test time and labor costs are greatly reduced, test efficiency is improved, the highly integrated network test bench improves technical security.

[0139] In a second aspect, the utility model provides a kind of test system of vehicle. The test system of vehicle includes upper computer, test equipment, test bench and sample piece to be measured connected in sequence.The test bench is any one of the test bench of vehicle provided in the above first aspect.

[0140] Wherein: upper computer is connected with test equipment, test equipment is connected with test bench, and test bench is connected with sample piece to be measured.

[0141] It should be noted that the technical effects achieved by the vehicle device are consistent with the control of the low-voltage load electric appliance. For details, please refer to the detailed description of the technical effects of the control device of the low-voltage load electric appliance, which will not be repeated here.

[0142] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the utility model. Therefore, "in one embodiment" or "in some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the utility model, the size of the sequence number of the above processes does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the utility model. The sequence number of the above embodiment of the utility model is only for description, not representing the pros and cons of the embodiment.

[0143] It should be noted that in this paper, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a …" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0144] In several embodiments provided by the utility model, it should be understood that the disclosed device and method can be realized by other ways. The device embodiments described above are only illustrative, for example, the division of units is only a logical function division, and another division mode can be used in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed components can be through some interface, indirect coupling or communication connection of the device or unit, which can be electrical, mechanical or other forms.

[0145] The units described above as separate components can or can not be physically separated, and the components shown as units can or can not be physical units; they can be located in one place or distributed on multiple network units; part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0146] In addition, all the functional units in the embodiments of the utility model can be integrated in one processing unit, or each unit can be a separate unit, or two or more units can be integrated in one unit; the integrated unit can be realized in the form of hardware or hardware plus software function unit.

[0147] Those skilled in the art can understand that all or part of the steps of the above-mentioned method embodiments can be completed by program instruction related hardware, and the foregoing program can be stored in a computer readable storage medium, and the program executes the steps including the above-mentioned method embodiments when executed; and the foregoing storage medium includes mobile storage equipment, read only memory (Read Only Memory, ROM), magnetic disc or optical disc and various storage program codes.

[0148] Alternatively, the integrated unit of the utility model can be stored in a computer readable storage medium if it is realized in the form of a software function module and sold or used as an independent product. Based on this understanding, the technical solutions of the embodiments of the utility model can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device) to execute all or part of the embodiments of the utility model method. And the foregoing storage medium includes mobile storage equipment, ROM, magnetic disc or optical disc and various storage program codes.

[0149] The above is only an embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A test bench for a vehicle, characterized in that, The test bench comprises a first interface, a relay control module, a communication interface module and a power module; The first interface of the test bench is connected with a test device; The communication interface module comprises N communication interfaces in parallel, and the relay control module comprises M relays in parallel; M and N are both integers greater than 1; The first end of each of the M relays is connected with the first interface respectively; the second end of each of the M relays is connected with the first end of the N communication interfaces respectively; and the second end of the N communication interfaces is connected with a to-be-tested sample of at least one vehicle; The power module is connected with the relay control module, the communication interface module and the to-be-tested sample respectively.

2. The test bench according to claim 1, wherein A first test path of the to-be-tested sample comprises, in sequence, the first interface, a conducting relay in the relay control module, a conducting communication interface in the communication interface module connected with the conducting relay, and the to-be-tested sample; A second test path of the to-be-tested sample comprises, in sequence, the to-be-tested sample, a conducting communication interface in the communication interface module connected with the conducting relay, a conducting relay in the relay control module, and the first interface.

3. The test bed of claim 1, wherein, The N communication interfaces comprise at least two of the following interfaces: a controller area network (CAN) communication interface, an on-board diagnostics (OBD) communication interface, an Ethernet (ETH) communication interface, a local interconnect network (LIN) communication interface and an input / output (IO) communication interface.

4. The test bench according to claim 3, wherein The CAN communication interface comprises at least one of the following interfaces: a CAN interface for remote communication control, a CAN interface for power control, a CAN interface for chassis control, a CAN interface for cabin control, a CAN interface for private network control, a CAN interface for diagnosis control, a CAN interface for body control and a reserved CAN interface; The ETH communication interface comprises at least one of the following interfaces: an ETH interface for cabin domain control, an ETH interface for remote communication control, an ETH interface for whole vehicle control; The LIN communication interface comprises at least one of the following interfaces: a LIN interface for window control, a LIN interface for door control, a LIN interface for brake control and a reserved LIN interface.

5. Test bench according to any one of claims 1 to 4, characterized in that The relay control module is a relay card; and the M relays are integrated on the relay card.

6. Test bench according to any one of claims 1 to 4, characterized in that The relay control module comprises M relays and M switches; The first end of each of the M relays is connected with the first end of each of the M switches in one-to-one correspondence respectively; The second end of each of the M switches is connected with the first interface respectively.

7. The test bench according to claim 6, wherein The M switches comprise one or more switches for door lock control function, one or more switches for light control function, one or more switches for wiper control function, one or more switches for rearview mirror control function and one or more reserved switches.

8. The test bench according to any one of claims 1-4, characterized in that, the power module comprises a first power supply and a second power supply; the output of the first power supply is alternating current, and the output of the second power supply is direct current; the first power supply is connected with the relay control module and the communication interface module respectively; the second power supply is connected with the relay control module, the communication interface module and the sample to be tested respectively.

9. Test bench according to any of claims 1 to 4, characterized in that the first interface is any one of the following: an Ethernet interface, a recommended standard RS485 interface, a registered jack interface, and a universal serial bus (USB) interface.

10. A test system for a vehicle, characterized by the test system comprises a host computer, a test device, a test bench, and a sample to be tested connected in sequence; and the test bench is the test bench according to any one of claims 1-9.

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