Excitation test equipment

Abstract

The utility model relates to the technical field of equipment testing, and discloses excitation testing equipment, which comprises an upper computer, a control terminal to be tested, an excitation control terminal and a switching control terminal, the excitation test unit is connected with the excitation control end and is provided with a positive electrode end and a negative electrode end; the signal switching unit comprises a plurality of positive electrode switching pieces and a plurality of negative electrode switching pieces, each positive electrode switching piece is provided with a first connecting end, a second connecting end and a first control end, each negative electrode switching piece is provided with a third connecting end, a fourth connecting end and a second control end, and the first control ends and the second control ends are both connected with the switching control end; the first connecting end is connected with the anode end, and the third connecting end is connected with the cathode end; and the multi-channel connector is provided with a plurality of signal channels, and the plurality of signal channels, the plurality of second connecting ends and the plurality of fourth connecting ends are connected in a one-to-one correspondence manner. The excitation test equipment can perform automatic testing, improves the testing efficiency and effectiveness, and reduces the investment of testers.

Description

Technical Field

[0001] This utility model relates to the field of equipment testing technology, and specifically to an excitation testing device. Background Technology

[0002] Hardware-in-the-Loop (HIL) testing is a technique for developing and testing complex device controllers. HIL testing replaces the physical components of a machine or system with a simulator, and it is particularly widely used in the development of automotive controllers (Electronic Control Units, ECUs). Before using HIL testing equipment, it is necessary to perform stimulus testing to ensure the functional integrity and testing accuracy of the HIL testing equipment.

[0003] In related technologies, stimulation testing is usually performed manually by at least two testers who manually switch test instruments and test interfaces. The stimulation testing process is relatively complex. For multi-channel I / O (Input / Output) boards, problems such as testing the wrong channels or missing channels are prone to occur during the testing process. For high-precision boards, the testing process is time-consuming and error-prone. Utility Model Content

[0004] In view of this, the present invention provides an excitation test device to solve the problem of the relatively complex excitation test process of HIL test equipment.

[0005] This utility model provides an excitation test device for excitation testing of HIL test equipment, comprising: a host computer having a control terminal under test, an excitation control terminal, and a switching control terminal, wherein the control terminal under test is used to connect to the HIL test equipment; an excitation test unit connected to the excitation control terminal and having a positive terminal and a negative terminal; a signal switching unit including multiple positive switching components and multiple negative switching components, wherein the positive switching component has a first connection terminal, a second connection terminal, and a first control terminal, and the negative switching component has a third connection terminal, a fourth connection terminal, and a second control terminal, wherein the first control terminal and the second control terminal are both connected to the switching control terminal, the first connection terminal is connected to the positive terminal, and the third connection terminal is connected to the negative terminal; a multi-channel connector having multiple signal channels, wherein the multiple signal channels, the multiple second connection terminals, and the multiple fourth connection terminals are connected one-to-one, and the multiple signal channels are used to connect to the HIL test equipment; and a power distribution unit connected to the excitation test unit and the signal switching unit.

[0006] Beneficial effects: For multi-channel I / O boards, the number of signal channels can be greater than or equal to the number of channels on the multi-channel I / O board. Each channel of the multi-channel I / O board is connected to one signal channel to avoid testing the wrong channel or missing channels. For high-precision boards, the excitation test equipment of this embodiment adopts a host computer to control the HIL test equipment, excitation test unit, and signal switching unit, which can realize excitation testing by a single person. The host computer controls the signal output of the HIL test equipment, the channel switching of the signal switching unit, the parameter and mode switching of the excitation test unit, and the data reading and saving of the excitation test unit. This can improve the efficiency and effectiveness of excitation testing of the HIL test equipment, reduce the investment of excitation testing personnel, and improve the quality of the HIL test equipment.

[0007] In one alternative implementation, a plurality of the positive switching components are integrated on a first circuit board; and / or a plurality of the negative switching components are integrated on a second circuit board.

[0008] Beneficial effects: It can improve the integration level of excitation test equipment, eliminating the need to install each positive and negative switching component separately, thus improving assembly efficiency. It also reduces the number of wires connecting the host computer to the outside world, facilitating the wiring of the excitation test equipment and achieving high space utilization.

[0009] In one optional embodiment, the first circuit board has a first terminal, a plurality of second terminals and a third terminal, wherein the positive terminal is connected to each of the first connection terminals via the first terminal, each of the second connection terminals is connected to a corresponding signal channel via the corresponding second terminal, and the switching control terminal is connected to each of the first control terminals via the third terminal; the second circuit board has a fourth terminal, a plurality of fifth terminals and a sixth terminal, wherein the negative terminal is connected to each of the third connection terminals via the fourth terminal, the fourth connection terminal is connected to a corresponding signal channel via the corresponding fifth terminal, and the switching control terminal is connected to each of the second control terminals via the sixth terminal.

[0010] Beneficial effects: Improved integration level, reduced number of wires, optimized spatial structure of excitation test equipment, and ensured reliability of the connection between the first and second circuit boards and the multi-channel connector.

[0011] In one optional embodiment, the excitation test unit includes multiple test instruments, each of which has a positive terminal and a negative terminal; the signal switching unit further includes multiple instrument switching modules, each instrument switching module having a fifth connection terminal, a sixth connection terminal and a third control terminal, the third control terminal being connected to the switching control terminal, the multiple positive terminals being connected one-to-one with the multiple fifth connection terminals, and each sixth connection terminal being connected to the first terminal.

[0012] Beneficial effects: It can control whether the positive terminal of each test instrument is connected to the first circuit board, and synchronously switch the instrument switching module and the positive terminal switching component. It can determine the connection and disconnection status of each test instrument with the HIL test equipment. There is no need to manually switch the test instruments connected to the first circuit board. It has a high degree of automation and improves the reliability and efficiency of testing.

[0013] In one alternative implementation, multiple instrument switching modules are integrated on a third circuit board.

[0014] Beneficial effects: It can improve the integration level of excitation test equipment, eliminate the need to install each instrument switching module separately, improve assembly efficiency, and reduce the number of wires connecting the host computer to the outside world, making it easier to wire the excitation test equipment.

[0015] In one optional embodiment, the third circuit board has a plurality of seventh terminals, a plurality of eighth terminals, and a ninth terminal. The fifth connection terminal and the corresponding positive terminal are connected through the corresponding seventh terminal, the sixth connection terminal and the first terminal are connected through the corresponding eighth terminal, and each of the third control terminals and the switching control terminal are connected through the ninth terminal.

[0016] Beneficial effects: It can reduce the number of wires between the third circuit board and the first circuit board, ensure the reliability of signal transmission, facilitate the routing layout of excitation test equipment, and improve assembly efficiency and space utilization.

[0017] In one optional embodiment, the excitation test equipment further includes a mounting plate, on which at least two of the first circuit board, the second circuit board, and the third circuit board are mounted.

[0018] Beneficial effects: It can improve the integration of excitation testing equipment, make assembly more convenient, and improve space utilization.

[0019] In one optional embodiment, the excitation testing device further includes: a voltage conditioning unit having multiple voltage conditioning circuits, the input terminals of the voltage conditioning circuits being connected to the power distribution unit, the positive switching element being connected to the output terminal of at least one of the voltage conditioning circuits, the negative switching element being connected to the output terminal of at least one of the voltage conditioning circuits, the instrument switching module being connected to the output terminal of at least one of the voltage conditioning circuits, the voltage conditioning unit being connected to the host computer, and at least two of the voltage conditioning circuits having different output voltages.

[0020] Beneficial effects: It can power positive and negative switching devices and instrument switching modules of different specifications, facilitating the replacement of positive and negative switching devices and instrument switching modules in the excitation testing equipment and improving the applicability of the excitation testing equipment. In addition, the voltage output of the voltage conditioning unit can also power HIL testing equipment, thereby improving the applicability to HIL testing equipment of different specifications.

[0021] In one alternative implementation, the plurality of test instruments include a digital multimeter, a DC regulated power supply, a signal generator, and an oscilloscope.

[0022] Beneficial effects: The excitation test equipment can input different excitation voltages and different excitation signals to the HIL test equipment, and can acquire the voltage, current, resistance and waveform signals output by the HIL test equipment.

[0023] In one optional embodiment, the excitation test equipment further includes: a housing, in which the digital multimeter, the DC regulated power supply, the signal generator, the oscilloscope, the power distribution unit, and the voltage conditioning unit are installed and stacked in a vertical direction, the host computer and the multi-channel connector are installed in the housing, and the display screen of the host computer and the multi-channel connector are exposed from the housing.

[0024] Beneficial effects: It improves the integration of the excitation test equipment, which is conducive to fixing the relative positions of the host computer, excitation test unit, signal switching unit, and multi-channel connector, thereby improving the connection reliability of the excitation test equipment. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram showing the connection between the excitation test equipment and the HIL test equipment of this utility model;

[0027] Figure 2 This is one of the connection diagrams of the excitation test equipment of this utility model;

[0028] Figure 3 This is the second connection diagram of the excitation test equipment of this utility model;

[0029] Figure 4 This is a schematic diagram of the first circuit board of the excitation test device of this utility model;

[0030] Figure 5 This is a schematic diagram of the second circuit board of the excitation test device of this utility model;

[0031] Figure 6 This is a schematic diagram of the third circuit board of the excitation test device of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Excitation test equipment; 2. HIL test equipment; 21. Power distribution module; 22. Voltage conditioning module; 23. Simulation board; 24. Standard sample; 25. Multi-channel connection module; 26. Simulator;

[0034] 100. Excitation test unit; 101. Positive terminal; 102. Negative terminal; 110. Test instrument; 111. Digital multimeter; 112. DC regulated power supply; 113. Signal generator; 114. Oscilloscope;

[0035] 200. Signal switching unit; 210. Positive electrode switching component; 211. First circuit board; 212. First terminal; 213. Second terminal; 214. First connection terminal; 215. Second connection terminal; 220. Negative electrode switching component; 221. Second circuit board; 222. Fourth terminal; 223. Fifth terminal; 224. Third connection terminal; 225. Fourth connection terminal; 230. Instrument switching module; 231. Third circuit board; 232. Seventh terminal; 233. Eighth terminal; 234. Fifth connection terminal; 235. Sixth connection terminal;

[0036] 300. Multi-channel connector; 310. Signal channel;

[0037] 400. Power distribution unit; 500. Voltage conditioning unit;

[0038] 600, Host computer; 610, Control terminal under test; 620, Excitation control terminal; 630, Switching control terminal. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] In the description of this utility model, "a plurality of" means two or more. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] HIL testing uses a real-time processor to run a vehicle simulation model to simulate the vehicle's operating state. It connects to the ECU under test through an I / O interface, provides input signals to the ECU under test, and collects the output signals and necessary input signals of the ECU under test. This enables the ECU under test to achieve closed-loop control of the vehicle simulation model, thereby conducting comprehensive testing of the ECU under test.

[0044] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0045] According to an embodiment of the present invention, an excitation test device 1 is provided. The excitation test device 1 is used to excite and test a HIL test device 2. The excitation test device 1 includes a host computer 600, an excitation test unit 100, a signal switching unit 200, a multi-channel connector 300, and a power distribution unit 400.

[0046] The host computer 600 has a control terminal under test 610, an excitation control terminal 620, and a switching control terminal 630. The control terminal under test 610 is used to connect to the HIL test equipment 2. The excitation test unit 100 is connected to the excitation control terminal 620, and the excitation test unit 100 has a positive terminal 101 and a negative terminal 102. The signal switching unit 200 includes multiple positive switching elements 210 and multiple negative switching elements 220. The positive switching element 210 has a first connection terminal 214, a second connection terminal 215, and a first control terminal (not shown in the figure). The negative switching element 220 has a third connection terminal 224, a fourth connection terminal 225, and a second control terminal (not shown in the figure). Both the first control terminal and the second control terminal are connected to the switching control terminal 630. The first connection terminal 214 is connected to the positive terminal 101, and the third connection terminal 224 is connected to the negative terminal 102. The multi-channel connector 300 has multiple signal channels 310, and the multiple signal channels 310, multiple second connection terminals 215, and multiple fourth connection terminals 225 are connected one-to-one. The multiple signal channels 310 are used to connect to the HIL test equipment 2 under test. The power distribution unit 400 (PDU) is connected to the excitation test unit 100 and the signal switching unit 200, and the power distribution unit 400 supplies power to the excitation test unit 100 and the signal switching unit 200.

[0047] Specifically, the multi-channel connector 300 may include at least one of an ODU connector and a Smith connector. The multi-channel connector 300 transmits signals from the board of the HIL test equipment 2 to the excitation test equipment 1. The number of signal channels 310 can be 90. The host computer 600 can set the parameters of the excitation test unit 100 and read the readings of the excitation test unit 100 through the excitation control terminal 620.

[0048] Furthermore, both the positive terminal switching component 210 and the negative terminal switching component 220 can be relays. The host computer 600 can control the connection or disconnection between the first connection terminal 214 and the second connection terminal 215 through the first control terminal of each positive terminal switching component 210, and the host computer 600 can control the connection or disconnection between the third connection terminal 224 and the fourth connection terminal 225 through the second control terminal of each negative terminal switching component 220.

[0049] When one positive switching element 210 is in the connected state, the other positive switching elements 210 are in the disconnected state; when one negative switching element 220 is in the connected state, the other negative switching elements 220 are in the disconnected state.

[0050] Furthermore, when a positive switch 210 is in the connected state, the negative switch 220 connected to the same signal channel 310 is in the off state. Similarly, when a negative switch 220 is in the connected state, the positive switch 210 connected to the same signal channel 310 is in the off state. In other words, the positive switch 210 and the negative switch 220 connected to the same signal channel 310 will not be in the connected state at the same time, but they can be in the disconnected state at the same time.

[0051] For example, the HIL test equipment 2 may include a power distribution module 21, a simulation board 23, a standard sample 24, a multi-channel connection module 25, and a simulator 26. The power distribution module 21 supplies power to the simulation board 23, the standard sample 24, the multi-channel connection module 25, and the simulator 26. The multi-channel connection module 25 is connected to the multi-channel connector 300. That is, the excitation test unit 100 is connected to the simulation board 23 through the signal switching unit 200, the multi-channel connector 300, and the multi-channel connection module 25.

[0052] The simulation board 23 and the simulator 26 can simulate the operating state of a vehicle. The controller under test 610 is connected to the simulator 26 via Ethernet (wired or Wi-Fi wireless connection). The standard sample 24 can be a car controller with known performance. Furthermore, the HIL test equipment 2 may also include a voltage conditioning module 22, which is connected to the power distribution module 21 and is used to output different DC currents to the simulation board 23.

[0053] The working process of excitation test equipment 1 is as follows:

[0054] First, the host computer 600 can control the excitation test unit 100 to output different excitation signals. At the same time, the host computer 600 controls the on / off state of multiple positive switching components 210 and multiple negative switching components 220 to transmit different excitation signals to different test points of the HIL test equipment 2.

[0055] Then, the HIL test device 2 outputs a feedback signal under the excitation signal, and at the same time, the host computer 600 transmits the feedback signal to the excitation test unit 100 by controlling the on / off state of multiple positive switching elements 210 and multiple negative switching elements 220.

[0056] Finally, the excitation test unit 100 transmits the processed feedback signal to the host computer 600. The host computer 600 can determine whether each test point of the HIL test device 2 is in a qualified state based on the processed feedback signal.

[0057] The HIL test equipment 2 outputs two types of feedback signals under the excitation signal: digital signals and differential analog signals. When the feedback signal is a digital signal, the host computer 600 controls a positive terminal switch 210 to be in a connected state, and the feedback signal is output to the positive terminal 101 of the excitation test unit 100. When the feedback signal is a differential analog signal, the host computer 600 controls a positive terminal switch 210 and a negative terminal switch 220 to be in a connected state, and the negative terminal 102 can be grounded. In this way, the excitation test equipment 1 can read two different forms of feedback signals, namely digital signals and differential analog signals, ensuring the accuracy of the test.

[0058] For multi-channel I / O boards, the number of signal channels 310 can be greater than or equal to the number of channels on the multi-channel I / O board. Each channel of the multi-channel I / O board is connected to one signal channel 310 to avoid testing the wrong channel or missing channels. For high-precision boards, the excitation test equipment 1 of this embodiment uses a host computer 600 to control the HIL test equipment 2, the excitation test unit 100, and the signal switching unit 200. This allows for excitation testing by a single person. The host computer 600 controls the signal output of the HIL test equipment 2, the channel switching of the signal switching unit 200, the parameter and mode switching of the excitation test unit 100, and the data reading and saving of the excitation test unit 100. This can improve the efficiency and effectiveness of excitation testing of the HIL test equipment 2, reduce the input of excitation testing personnel, and improve the quality of the HIL test equipment 2.

[0059] like Figure 2 and Figure 4 As shown, in this embodiment, multiple positive electrode switching components 210 are integrated on the first circuit board 211. This improves the integration level of the excitation test equipment 1, eliminating the need to install each positive electrode switching component 210 separately. Multiple positive electrode switching components 210 can be installed together on the excitation test equipment 1, improving assembly efficiency. Furthermore, the host computer 600 is connected to the first circuit board 211, enabling control over the on / off states of the multiple positive electrode switching components 210. This reduces the number of wires connecting the host computer 600 to the outside world, facilitating wiring in the excitation test equipment 1 and resulting in high space utilization.

[0060] like Figure 2 and Figure 5As shown, multiple negative electrode switching components 220 are integrated on the second circuit board 221. This improves the integration level of the excitation test equipment 1, eliminating the need to install each negative electrode switching component 220 individually. Multiple negative electrode switching components 220 can be installed together on the excitation test equipment 1, improving assembly efficiency. Furthermore, the host computer 600 is connected to the second circuit board 221, enabling control over the on / off states of the multiple negative electrode switching components 220. This reduces the number of wires connecting the host computer 600 to the outside world, facilitating wiring for the excitation test equipment 1 and resulting in high space utilization.

[0061] Furthermore, the first circuit board 211 has a second terminal 213, multiple first terminals 212, and a third terminal (not shown in the figure). The first terminal 212 is connected to the positive terminal 101 and multiple first connection terminals 214. The positive terminal 101 of the excitation test unit 100 is connected to the multiple first connection terminals 214 through the first terminal 212. The multiple second terminals 213 and multiple second connection terminals 215 are connected to multiple signal channels 310 one by one. Each signal channel 310 is connected to the corresponding second connection terminal 215 through the corresponding second terminal 213. The third terminal is connected to the switching control terminal 630 and multiple first control terminals. The switching control terminal 630 is connected to the multiple first control terminals through the third terminal.

[0062] Since the first end 212 of the first circuit board 211 needs to be connected to the excitation test unit 100, and the number of connection points between the two is relatively small, the connection points can be integrated into one output end, thereby improving the integration level, reducing the number of wires, facilitating the wiring layout of the excitation test device 1, optimizing the spatial structure of the excitation test device 1, and improving assembly efficiency and space utilization.

[0063] Since the number of signal channels 310 is relatively large, for example, the number of signal channels 310 may reach 90, in order to ensure the reliability of the connection between the first circuit board 211 and the multi-channel connector 300 and to avoid problems such as omissions or unstable connections, the number of second terminals 213 is set to be the same as the number of second connection terminals 215. This helps to ensure the reliability of the connection between the first circuit board 211 and the multi-channel connector 300, thereby ensuring the accuracy of the test structure of the HIL test equipment 2.

[0064] In addition, the second circuit board 221 has a fourth terminal 222, multiple fifth terminals 223 and a sixth terminal (not shown in the figure). The fourth terminal 222 is connected to the negative terminal 102 and multiple third connection terminals 224. The negative terminal 102 of the excitation test unit 100 is connected to the multiple third connection terminals 224 through the fourth terminal 222. The multiple fifth terminals 223 and multiple fourth connection terminals 225 are connected to multiple signal channels 310 one by one. Each signal channel 310 is connected to the corresponding fourth connection terminal 225 through the corresponding fifth terminal 223. The sixth terminal is connected to the switching control terminal 630 and multiple second control terminals. The switching control terminal 630 is connected to the multiple second control terminals through the sixth terminal.

[0065] Since the fourth terminal 222 of the second circuit board 221 needs to be connected to the excitation test unit 100, and the number of connection points between the two is relatively small, the connection points can be integrated into one output terminal to improve the integration level, reduce the number of wires, facilitate the wiring layout of the excitation test device 1, optimize the spatial structure of the excitation test device 1, and improve assembly efficiency and space utilization.

[0066] Since the number of signal channels 310 is relatively large, for example, the number of signal channels 310 may reach 90, in order to ensure the reliability of the connection between the second circuit board 221 and the multi-channel connector 300 and to avoid problems such as omissions or unstable connections, the number of fifth terminals 223 is set to be the same as the number of fourth connection terminals 225. This helps to ensure the reliability of the connection between the second circuit board 221 and the multi-channel connector 300, thereby ensuring the accuracy of the test structure of the HIL test equipment 2.

[0067] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the excitation test unit 100 includes multiple test instruments 110, each test instrument 110 having a positive terminal 101 and a negative terminal 102. The signal switching unit 200 also includes multiple instrument switching modules 230, each instrument switching module 230 having a fifth connection terminal 234, a sixth connection terminal 235 and a third control terminal (not shown in the figure). The third control terminal is connected to the switching control terminal 630. The multiple positive terminals 101 are connected to the multiple sixth connection terminals 235 one-to-one, and each sixth connection terminal 235 is connected to the first terminal 212.

[0068] The host computer 600 can control the connection and disconnection between the fifth connection terminal 234 and the sixth connection terminal 235 through the third control terminal of the instrument switching module 230, that is, control the instrument switching module 230 to switch between the connected state and the disconnected state. The instrument switching module 230 can be a relay.

[0069] By setting up multiple instrument switching modules 230, it is possible to control whether the positive terminal 101 of each test instrument 110 is connected to the first circuit board 211. By synchronously switching the instrument switching module 230 and the positive terminal switching component 210, it is possible to determine the connection and disconnection status of each test instrument 110 with the HIL test equipment 2. There is no need to manually switch the test instrument 110 connected to the first circuit board 211, which has a high degree of automation and improves the reliability and efficiency of testing.

[0070] Furthermore, Figure 2 and Figure 6 As shown, in this embodiment, multiple instrument switching modules 230 are integrated on the third circuit board 231. This improves the integration level of the excitation test equipment 1, eliminating the need for separate installation of each instrument switching module 230. Multiple instrument switching modules 230 can be installed together on the excitation test equipment 1, improving assembly efficiency. Furthermore, the host computer 600 is connected to the third circuit board 231, enabling control over the on / off states of the multiple instrument switching modules 230. This reduces the number of wires connecting the host computer 600 to the outside world, facilitating wiring for the excitation test equipment 1 and resulting in high space utilization.

[0071] Furthermore, the third circuit board 231 has multiple seventh terminals 232, multiple eighth terminals 233, and a ninth terminal (not shown in the figure). The multiple seventh terminals 232, multiple fifth connection terminals 234, and multiple positive terminals 101 are connected one-to-one. Each positive terminal 101 is connected to the corresponding fifth connection terminal 234 through the corresponding seventh terminal 232. The multiple eighth terminals 233 are connected to the multiple sixth connection terminals 235 one-to-one, and each eighth terminal 233 is connected to the first terminal 212. The ninth terminal is connected to the switching control terminal 630 and multiple third control terminals. The switching control terminal 630 is connected to the multiple third control terminals through the ninth terminal.

[0072] Since the signal transmission wires connected to the test instrument 110 may be different, and the diameter of the signal transmission wires connected to the test instrument 110 may be large, by setting multiple seventh terminals 232, a reliable connection between the third circuit board 231 and multiple test instruments 110 can be ensured.

[0073] By connecting each eighth terminal 233 to the first terminal 212, and connecting multiple eighth terminals 233 to multiple sixth connection terminals 235 in a one-to-one correspondence, the number of wires between the third circuit board 231 and the first circuit board 211 can be reduced, the reliability of signal transmission can be guaranteed, the wiring layout of the excitation test equipment 1 can be facilitated, the spatial structure of the excitation test equipment 1 can be optimized, and the assembly efficiency and space utilization can be improved.

[0074] In some unillustrated technical solutions, the excitation test device 1 also includes a mounting plate (not shown in the figure), on which at least two of the first circuit board 211, the second circuit board 221, and the third circuit board 231 are mounted. That is, the first circuit board 211 and the second circuit board 221 are mounted on the mounting plate, the first circuit board 211 and the third circuit board 231 are mounted on the mounting plate, the second circuit board 221 and the third circuit board 231 are mounted on the mounting plate, or the first circuit board 211, the second circuit board 221, and the third circuit board 231 are mounted on the mounting plate.

[0075] This improves the integration of the excitation test equipment 1, makes assembly more convenient, and increases space utilization.

[0076] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the excitation test device 1 further includes a voltage conditioning unit 500. The voltage conditioning unit 500 has multiple voltage conditioning circuits (not shown in the figure). The input terminal of the voltage conditioning circuit is connected to the power distribution unit 400. The positive switching component 210 is connected to the output terminal of at least one voltage conditioning circuit. The negative switching component 220 is connected to the output terminal of at least one voltage conditioning circuit. The instrument switching module 230 is connected to the output terminal of at least one voltage conditioning circuit. The voltage conditioning unit 500 is connected to the host computer 600. The output voltages of at least two voltage conditioning circuits are different.

[0077] For example, the voltage conditioning unit 500 can output different DC power supplies such as 24V, ±15V, 12V, and 5V. The positive switching unit 210 and the negative switching unit 220 require a voltage of 15V, and the instrument switching module 230 requires a voltage of 12V. 24V, ±15V, 12V, 5V, etc. can all be provided to the HIL test equipment 2 as needed.

[0078] This allows for power supply to positive electrode switching devices 210, negative electrode switching devices 220, and instrument switching modules 230 of different specifications, facilitating the replacement of these devices by the excitation test equipment 1. This improves the applicability of the excitation test equipment 1, enabling testing of HIL test equipment 2 with different specifications. Furthermore, the voltage output from the voltage conditioning unit 500 can also power the HIL test equipment 2, further enhancing its applicability to different specifications of HIL test equipment 2.

[0079] like Figure 2As shown, in this embodiment, the multiple testing instruments 110 include a digital multimeter 111, a DC regulated power supply 112, a signal generator 113, and an oscilloscope 114. The host computer 600 can control the DC regulated power supply 112 to output different excitation voltages to the simulation board 23, control the signal generator 113 to output different excitation signals to the simulation board 23, display the physical quantities (e.g., current, voltage, resistance) detected by the digital multimeter 111 at the output of the simulation board 23, and display the waveforms acquired by the oscilloscope 114 at the output of the simulation board 23.

[0080] By changing the on / off states of multiple positive switching elements 210 and multiple negative switching elements 220, excitation voltages and excitation signals can be output to different test points of the simulation board 23. Then, the digital multimeter 111 can detect the voltages fed back from different test points of the HIL test device 2, and the oscilloscope 114 can detect the waveforms fed back from different test points of the HIL test device 2.

[0081] In this way, the host computer 600 can determine whether different test points of the HIL test equipment 2 meet the requirements based on the above excitation parameters and feedback parameters, thereby improving the accuracy of the excitation test.

[0082] In some unshown technical solutions, the excitation test equipment 1 also includes a housing (not shown in the figure), a digital multimeter 111, a DC regulated power supply 112, a signal generator 113, an oscilloscope 114, a power distribution unit 400, and a voltage conditioning unit 500 installed in the housing and stacked in a vertical direction. A host computer 600 and a multi-channel connector 300 are installed in the housing, and the display screen of the host computer 600 and the multi-channel connector 300 are exposed from the housing.

[0083] In this way, while facilitating the operation of the host computer 600 and the connection between the multi-channel connector 300 and the HIL test equipment 2, the integration of the excitation test equipment 1 is improved. This is beneficial for fixing the relative positions of the host computer 600, the excitation test unit 100, the signal switching unit 200, and the multi-channel connector 300, thereby improving the connection reliability of the excitation test equipment 1.

[0084] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A stimulation test device for stimulating and testing HIL test equipment (2), characterized in that, include: The host computer (600) has a control terminal under test (610), an excitation control terminal (620) and a switching control terminal (630), wherein the control terminal under test (610) is used to connect to the HIL test equipment (2). The excitation test unit (100) is connected to the excitation control terminal (620) and has a positive terminal (101) and a negative terminal (102). The signal switching unit (200) includes multiple positive switching elements (210) and multiple negative switching elements (220). The positive switching element (210) has a first connection terminal (214), a second connection terminal (215) and a first control terminal. The negative switching element (220) has a third connection terminal (224), a fourth connection terminal (225) and a second control terminal. The first control terminal and the second control terminal are both connected to the switching control terminal (630). The first connection terminal (214) is connected to the positive terminal (101), and the third connection terminal (224) is connected to the negative terminal (102). The multi-channel connector (300) is provided with multiple signal channels (310), and the multiple signal channels (310), multiple second connection terminals (215) and multiple fourth connection terminals (225) are connected one-to-one. The multiple signal channels (310) are used to connect to the HIL test equipment (2). The power distribution unit (400) is connected to the excitation test unit (100) and the signal switching unit (200).

2. The excitation testing equipment according to claim 1, characterized in that, Multiple positive switching components (210) are integrated on the first circuit board (211); and / or Multiple negative electrode switching components (220) are integrated on a second circuit board (221).

3. The excitation testing equipment according to claim 2, characterized in that, The first circuit board (211) has a first end (212), a plurality of second ends (213) and a third end. The positive terminal (101) and each of the first connection ends (214) are connected through the first end (212). Each of the second connection ends (215) and the corresponding signal channel (310) are connected through the corresponding second end (213). The switching control end (630) and each of the first control ends are connected through the third end. The second circuit board (221) has a fourth terminal (222), a plurality of fifth terminals (223) and a sixth terminal. The negative terminal (102) and each of the third connection terminals (224) are connected through the fourth terminal (222). The fourth connection terminal (225) and the corresponding signal channel (310) are connected through the corresponding fifth terminal (223). The switching control terminal (630) and each of the second control terminals are connected through the sixth terminal.

4. The excitation testing equipment according to claim 3, characterized in that, The excitation test unit (100) includes a plurality of test instruments (110), each of the test instruments (110) having the positive terminal (101) and the negative terminal (102). The signal switching unit (200) further includes multiple instrument switching modules (230). Each instrument switching module (230) has a fifth connection terminal (234), a sixth connection terminal (235), and a third control terminal. The third control terminal is connected to the switching control terminal (630). Multiple positive terminals (101) are connected to multiple fifth connection terminals (234) in a one-to-one correspondence. Each sixth connection terminal (235) is connected to the first terminal (212).

5. The excitation testing device according to claim 4, characterized in that, Multiple instrument switching modules (230) are integrated on a third circuit board (231).

6. The excitation testing equipment according to claim 5, characterized in that, The third circuit board (231) has multiple seventh terminals (232), multiple eighth terminals (233) and a ninth terminal. The fifth connection terminal (234) and the corresponding positive terminal (101) are connected through the corresponding seventh terminal (232). The sixth connection terminal (235) and the first terminal (212) are connected through the corresponding eighth terminal (233). Each of the third control terminals and the switching control terminal (630) are connected through the ninth terminal.

7. The excitation testing equipment according to claim 5, characterized in that, Also includes: Mounting plate, at least two of the first circuit board (211), the second circuit board (221) and the third circuit board (231) are mounted on the mounting plate.

8. The excitation testing equipment according to claim 4, characterized in that, Also includes: The voltage conditioning unit (500) has multiple voltage conditioning circuits. The input terminals of the voltage conditioning circuits are connected to the power distribution unit (400). The positive switching element (210) is connected to the output terminal of at least one of the voltage conditioning circuits. The negative switching element (220) is connected to the output terminal of at least one of the voltage conditioning circuits. The instrument switching module (230) is connected to the output terminal of at least one of the voltage conditioning circuits. The voltage conditioning unit (500) is connected to the host computer (600). The output voltages of at least two of the voltage conditioning circuits are different.

9. The excitation testing device according to claim 8, characterized in that, The plurality of the test instruments (110) include a digital multimeter (111), a DC regulated power supply (112), a signal generator (113), and an oscilloscope (114).

10. The excitation testing device according to claim 9, characterized in that, Also includes: The enclosure houses the digital multimeter (111), the DC regulated power supply (112), the signal generator (113), the oscilloscope (114), the power distribution unit (400), and the voltage conditioning unit (500), which are stacked vertically. The host computer (600) and the multi-channel connector (300) are also installed in the enclosure. The display screen of the host computer (600) and the multi-channel connector (300) are exposed from the enclosure.

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