Integrated test platform of domain controller

Abstract

The utility model discloses an integrated test platform of a domain controller, comprising a signal simulation circuit which comprises at least one of an electronic lock signal generation circuit and a wake-up signal generation circuit and is suitable for being connected with a signal input end of the domain controller; the field controller is configured to simulate a signal input to the field controller when a vehicle works; wherein the electronic lock signal generation circuit is configured to simulate an electronic lock signal input into the domain controller when a vehicle works, and the wake-up signal generation circuit is configured to simulate a wake-up signal input into the domain controller when the vehicle works; and the communication interface is suitable for being connected with a communication end of the domain controller so as to read a signal processing result of the domain controller through the communication interface. According to the platform, the domain controller can be tested without a real load, and the testing function is more comprehensive and convenient, so that the testing efficiency of the domain controller is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle testing, and in particular to an integrated testing platform for a domain controller. Background Art

[0002] With the development of intelligent and information-based automobile technology, the usage of ECU (Elecmal Control Unit) chips in vehicles has gradually increased, and domain controller technology has also gradually developed. This technology integrates ECU functions with similar but separate functions into a processor hardware platform to meet vehicle needs. However, with the high degree of integration of domain controller functions, the number of external interfaces has increased dramatically, which leads to the problem of difficulty in connecting to real loads for testing due to too many interfaces when performing functional testing on domain controllers, which greatly limits the testing efficiency of domain controllers. Therefore, how to improve the testing efficiency of domain controllers is worthy of attention and urgent. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first purpose of the utility model is to propose an integrated test platform for a domain controller, which is connected to the signal input terminal of the domain controller through an internally arranged signal simulation circuit to simulate the signal input to the domain controller when the vehicle is working, and is connected to the communication terminal of the domain controller through a communication interface to read the signal processing result of the domain controller, thereby realizing the test of the domain controller without the need for a real load. In addition, the test platform also integrates the test functions of the electronic lock function and the external wake-up function of the domain controller through the built-in electronic lock signal generating circuit and the wake-up signal generating circuit, making the test platform's test performance of the domain controller more comprehensive and convenient, thereby improving the test efficiency of the domain controller.

[0004] To achieve the above-mentioned purpose, the first aspect of the utility model proposes an integrated testing platform for a domain controller, the platform comprising: a signal simulation circuit, the signal simulation circuit comprising at least one of an electronic lock signal generating circuit and a wake-up signal generating circuit, the signal simulation circuit being suitable for being connected to the signal input end of the domain controller, and being configured to simulate the signal input to the domain controller when the vehicle is working; wherein the electronic lock signal generating circuit is configured to simulate the electronic lock signal input to the domain controller when the vehicle is working, and the wake-up signal generating circuit is configured to simulate the wake-up signal input to the domain controller when the vehicle is working; a communication interface, the communication interface being suitable for being connected to the communication end of the domain controller, so as to read the processing result of the signal by the domain controller through the communication interface.

[0005] According to one embodiment of the utility model, the electronic lock signal generating circuit includes: a first relay, one end of the coil of the first relay is suitable for being connected to the first electronic lock signal detection end of the domain controller, the other end of the coil of the first relay is suitable for being connected to the second electronic lock signal detection end of the domain controller, one end of the switch of the first relay is connected to the first power supply, and the other end of the switch of the first relay is connected to the electronic lock signal feedback detection end; a first indicator light, one end of the first indicator light is connected to the other end of the switch of the first relay, and the other end of the first indicator light is grounded; an electronic lock signal source, the two ends of the electronic lock signal source are respectively connected to the two ends of the coil of the first relay, so as to simulate the input of the electronic lock signal.

[0006] According to one embodiment of the utility model, the wake-up signal generating circuit includes: a first switch, one end of the first switch is connected to the second power supply, and the other end of the first switch is connected to the wake-up signal detection end of the domain controller to simulate the input vehicle wake-up signal.

[0007] According to one embodiment of the utility model, the signal simulation circuit also includes a digital signal generating circuit, and the digital signal generating circuit includes: a second switch, one end of the second switch is connected to a third power supply, and the other end of the second switch is suitable for being connected to a first digital signal input end of a domain controller for simulating input of high-level digital signals and low-level digital signals.

[0008] According to one embodiment of the utility model, the signal simulation circuit also includes a temperature sampling circuit, which includes: a first adjustable resistor, a first end of the first adjustable resistor is grounded, and a second end of the first adjustable resistor is suitable for being connected to a temperature signal sampling end of a domain controller to simulate an input temperature sampling signal.

[0009] According to one embodiment of the utility model, the signal simulation circuit also includes a charging gun signal generating circuit, which includes: a first resistor and a third switch, one end of the first resistor is grounded, and the other end of the first resistor is connected to the first charging detection end of the domain controller through the third switch to simulate the input of the first charging detection signal; a second resistor and a fourth switch, one end of the second resistor is grounded, and the other end of the second resistor is connected to the second charging detection end of the domain controller through the fourth switch to simulate the input of the second charging detection signal.

[0010] According to an embodiment of the utility model, the platform further includes: a voltage accuracy sampling circuit, which is suitable for being connected to a voltage output terminal of the domain controller to detect the external output voltage of the domain controller.

[0011] According to one embodiment of the utility model, the platform also includes: a high-side drive analog load circuit, suitable for being connected to the high-side drive signal end of the domain controller, for detecting the high-side drive signal output by the domain controller; a low-side drive analog load circuit, suitable for being connected to the low-side drive signal end of the domain controller, for detecting the low-side drive signal output by the domain controller; a PWM signal drive analog load circuit, suitable for being connected to the PWM signal drive end of the domain controller, for detecting the PWM drive signal output by the domain controller.

[0012] According to an embodiment of the present utility model, the high-side driving simulated load circuit and the low-side driving simulated load circuit include relays.

[0013] According to the test platform of the embodiment of the utility model, the test platform is connected to the signal input end of the domain controller through an internally arranged signal simulation circuit to simulate the signal input to the domain controller when the vehicle is working, and is connected to the communication end of the domain controller through a communication interface to read the processing result of the signal by the domain controller, thereby realizing the test of the domain controller without the need for a real load. In addition, the test platform also integrates the test functions of the electronic lock function and the external wake-up function of the domain controller through a built-in electronic lock signal generating circuit and a wake-up signal generating circuit, so that the test performance of the test platform for the domain controller is more comprehensive and convenient, thereby improving the test efficiency of the domain controller.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an integrated test platform for a domain controller according to an embodiment of the utility model;

[0016] Figure 2 is a circuit diagram of an electronic lock signal generating circuit according to an embodiment of the utility model;

[0017] Figure 3 is a circuit diagram of a wake-up signal generating circuit according to an embodiment of the utility model;

[0018] Figure 4 It is a structural schematic diagram of an integrated test platform according to another embodiment of the utility model;

[0019] Figure 5 is a circuit diagram of a digital signal generating circuit according to an embodiment of the utility model;

[0020] Figure 6 is a circuit diagram of a temperature sampling circuit according to an embodiment of the utility model;

[0021] Figure 7 is a circuit diagram of a charging gun signal generating circuit according to an embodiment of the utility model;

[0022] Figure 8 is a circuit diagram of an analog signal generating circuit according to an embodiment of the utility model;

[0023] Fig. 9 A circuit diagram of a high voltage interlock signal generating circuit according to an embodiment of the utility model;

[0024] Fig.10 It is a structural schematic diagram of an integrated test platform according to another embodiment of the utility model;

[0025] Fig.11 A circuit diagram of a high-side drive simulated load circuit according to an embodiment of the utility model;

[0026] Fig.12 The figure is a circuit diagram of a low-side driving simulated load circuit according to an embodiment of the utility model. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The following describes an integrated testing platform for a domain controller according to an embodiment of the present invention with reference to the accompanying drawings.

[0029] Figure 1 The present invention is an integrated test platform for a domain controller according to an embodiment of the present invention. Figure 1 As shown, the platform 100 includes: a signal simulation circuit 110 and a communication interface 120 .

[0030] Among them, the signal simulation circuit 110 includes an electronic lock signal generating circuit 111 and a wake-up signal generating circuit 112. The signal simulation circuit 110 is suitable for being connected to the signal input end of the domain controller 200, and is configured to simulate the signal input to the domain controller 200 when the vehicle is working; wherein, the electronic lock signal generating circuit 111 is configured to simulate the electronic lock signal input to the domain controller 200 when the vehicle is working, and the wake-up signal generating circuit 112 is configured to simulate the wake-up signal input to the domain controller 200 when the vehicle is working; the communication interface 120 is suitable for being connected to the communication end of the domain controller 200, so as to read the signal processing result of the domain controller 200 through the communication interface 120.

[0031] Specifically, when the domain controller 100 needs to be tested, the test platform 100 can be connected to the signal input terminal of the domain controller 200 through the signal simulation circuit 110, and connected to the communication terminal of the domain controller 200 through the communication interface 120. The signal simulation circuit 110 can simulate various signals input to the domain controller 200 when the vehicle is working, so as to simulate the actual working state of various parts of the vehicle. The domain controller 200 can output corresponding processing results based on the various signals input by the signal simulation circuit 110, and send them to the platform 100 through the communication terminal and the communication interface 120. At this time, the user can determine whether the various functions of the current domain controller 200 are normal through the processing results output by the domain controller 200, thereby realizing the simulation test function of the domain controller 200.

[0032] In addition, reference Figure 1 As shown, the signal simulation circuit 110 also includes an electronic lock signal generating circuit 111 and a wake-up signal generating circuit 112, wherein the electronic lock signal generating circuit 111 is mainly used to simulate the electronic lock signal input to the domain controller when the vehicle is working, so as to detect whether the corresponding electronic lock function of the domain controller 200 is normal after receiving the electronic lock signal input from the vehicle; the wake-up signal generating circuit 112 is used to simulate the wake-up signal input to the domain controller when the vehicle is working, so as to detect whether the corresponding wake-up function of the domain controller 200 is normal after receiving the wake-up signal input from the vehicle, so that the test platform 100 can integrate the test functions of the electronic lock function and the external wake-up function of the domain controller.

[0033] In the above embodiment, an internally arranged signal simulation circuit is connected to the signal input terminal of the domain controller to simulate the signal input to the domain controller when the vehicle is working, and is connected to the communication terminal of the domain controller through a communication interface to read the signal processing result of the domain controller, thereby realizing the test function of the domain controller without the need for a real load. In addition, the test platform also integrates the test functions of the electronic lock function and the external wake-up function of the domain controller through the built-in electronic lock signal generating circuit and the wake-up signal generating circuit, so that the test performance of the test platform for the domain controller is more comprehensive and convenient, thereby improving the test efficiency of the domain controller.

[0034] In some embodiments, reference Figure 2As shown, the electronic lock signal generating circuit 111 includes a first relay JDQ1, a first indicator light D1 and an electronic lock signal source 1111. Among them, one end of the coil of the first relay JDQ1 is suitable for being connected to the first electronic lock signal detection terminal LOCK1 of the domain controller 200, and the other end of the coil of the first relay JDQ1 is suitable for being connected to the second electronic lock signal detection terminal LOCK2 of the domain controller 200, one end of the switch of the first relay JDQ1 is connected to the first power supply VDD1, and the other end of the switch of the first relay JDQ1 is connected to the electronic lock signal feedback detection terminal FK; one end of the first indicator light D1 is connected to the other end of the switch of the first relay J1, and the other end of the first indicator light D1 is grounded GND; the two ends of the electronic lock signal source 1111 are respectively connected to the two ends of the coil of the first relay JDQ1, so as to simulate the input of the electronic lock signal.

[0035] Specifically, the electronic lock signal generating circuit 111 has an interface matching the first electronic lock signal detecting terminal LOCK1 and the second electronic lock signal detecting terminal LOCK2 of the domain controller 200, such as Figure 2 The circular jack shown, when the domain controller 200 is tested for electronic lock, the first electronic lock signal detection terminal LOCK1 and the second electronic lock signal detection terminal LOCK2 of the domain controller 200 can be connected to the electronic lock signal source 1111 through a connector or the like, and the electronic lock signal source 1111 inputs an electronic lock signal to the domain controller 200, wherein the electronic lock signal can be a 12V voltage; subsequently, the test platform 100 can obtain the processing result output by the communication terminal of the domain controller 200 through the signal port 120 to test whether the electronic lock function of the current domain controller 200 is normal. At the same time, the electronic lock signal will also excite the first relay JDQ1, thereby making the first indicator light D1, and the user can determine whether the test platform 100 outputs the electronic lock signal to the domain controller 200 according to whether the first indicator light D1 is on, so as to determine whether the electronic lock signal output by the test platform 100 is normal. In addition, the test platform 100 can also determine whether the electronic lock signal output by the electronic lock signal generating circuit 111 is normal according to the output voltage value of the electronic lock signal feedback detection terminal FK in the electronic lock signal generating circuit 111, thereby further improving the reliability of the electronic lock signal generating circuit.

[0036] In some embodiments, reference Figure 3 As shown, the wake-up signal generating circuit 112 includes: a first switch S1, one end of the first switch S1 is connected to the second power supply VDD2, and the other end of the first switch S1 is connected to the wake-up signal detection terminal WAKE of the domain controller 200 to simulate the input vehicle wake-up signal.

[0037] Specifically, when a vehicle wake-up signal needs to be input, the test platform 100 can control the first switch S1 to close so that the second power supply VDD2 is connected to the wake-up signal detection terminal WAKE of the domain controller 200 to input the vehicle wake-up signal to the domain controller 200. Subsequently, the test platform 100 can obtain the processing result output by the domain controller 200 through the communication port 120 to determine whether the domain controller 200 can normally wake up the vehicle after receiving the vehicle wake-up signal, thereby realizing the test function of the vehicle wake-up function of the domain controller 200.

[0038] In some embodiments, reference Figure 4 As shown, the signal simulation circuit 110 also includes a digital signal generating circuit 113, wherein the reference Figure 5 As shown, the digital signal generating circuit 113 includes: a second switch S2, one end of the second switch S2 is connected to the third power supply VDD3, and the other end of the second switch S2 is suitable for being connected to the first digital signal input terminal VS1 of the domain controller 200 to simulate input of high-level digital signals and low-level digital signals.

[0039] Specifically, the digital signal generating circuit 113 is used to simulate the digital signal input to the domain controller 200 when the vehicle is working, such as various switch signals. When the digital signal generating circuit 113 needs to output a high-level signal, the user can control the second switch S2 to close, and the third power supply VDD3 can be connected to the first digital signal input terminal VS1 of the domain controller 200 through the second switch S2, thereby inputting a high-level signal to the domain controller 200, wherein the third power supply VDD3 voltage can be a conventional high-level voltage, such as 12V. When the digital signal generating circuit 113 needs to output a low-level signal, the user can control the second switch S2 to disconnect. At this time, the domain controller 200 stops being connected to the third power supply VDD3, and the voltage of the first digital signal input terminal VS1 of the domain controller 200 is 0V, thereby inputting a low-level signal to the domain controller 200. Thereby, the function of outputting high-level signals and low-level signals to the domain controller is realized. It should be noted that, according to the complexity of the domain controller 200, the test platform 200 can be provided with multiple second switches S2. For example, referring to Figure 4 As shown, the digital signal generating circuit 113 may include 13 second switches S2 to meet the requirements of multi-channel digital signal input of the domain controller 200. In addition, the second switch S2 may be a toggle switch so that the user can manually set the switch state of the corresponding second switch S2.

[0040] Optional, reference Figure 4 As shown, the signal simulation circuit also includes a temperature sampling circuit 114, wherein the reference Figure 6As shown, the temperature sampling circuit 114 includes: a first adjustable resistor RS1, a first end of the first adjustable resistor RS1 is grounded GND, and a second end of the first adjustable resistor RS1 is suitable for connecting to the temperature signal sampling end TEMPC of the domain controller 200 to simulate the input temperature sampling signal.

[0041] Specifically, the temperature sampling circuit 114 is mainly used to simulate the temperature sensors in the vehicle, such as battery temperature sensors. The temperature sampling circuit in the related art usually uses a thermistor to realize the temperature sampling function. The thermistor can change its own resistance according to the ambient temperature value, and then output the corresponding temperature sampling signal. In the embodiment of the utility model, a first adjustable resistor RS1 is used to replace the thermistor, wherein the second end of the first adjustable resistor RS1 is an adjustable end, and the resistance value of the first adjustable resistor RS1 is adjusted to simulate different temperature sampling signals input to the domain controller 200, thereby realizing the test function of the temperature sampling function of the domain controller 200. Among them, the adjustable end of the first adjustable resistor RS1 can be set to a knob adjustment, so that the user can manually adjust the resistance value of the first adjustable resistor RS1; in addition, the temperature sampling circuit 114 may include multiple first adjustable resistors RS1, for example, reference Figure 6 As shown, the temperature sampling circuit 114 may include eight first adjustable resistors RS1 to simultaneously test the temperature sampling functions of multiple temperature signal sampling terminals TEMPC of the domain controller 200, thereby improving the convenience and test efficiency of the test platform.

[0042] Optional, reference Figure 4 As shown, the signal simulation circuit 110 also includes a charging gun signal generating circuit 115, wherein the reference Figure 7 As shown, the charging gun signal generating circuit 115 includes: a first resistor R1, a third switch S3, a second resistor R2 and a fourth switch S4. Among them, one end of the first resistor R1 is grounded GND, and the other end of the first resistor R1 is connected to the first charging detection terminal CC1 of the domain controller 200 through the third switch S3, so as to simulate the input of the first charging detection signal; one end of the second resistor R2 is grounded GND, and the other end of the second resistor R2 is connected to the second charging detection terminal CC2 of the domain controller 200 through the fourth switch S4, so as to simulate the input of the second charging detection signal.

[0043] Specifically, the charging gun signal generating circuit 115 is mainly used to simulate the charging detection signal input by the vehicle to the domain controller when the vehicle is charging. When the vehicle is charging, the domain controller 200 needs to detect whether the charging gun is connected normally through the first charging detection terminal CC1 and the second charging detection terminal CC2 set internally. After the corresponding charging detection signal is detected through these two charging detection signal terminals, the domain controller 200 allows the charging gun to charge the vehicle to ensure the charging safety of the vehicle. In the embodiment of the utility model, the charging gun signal generating circuit 115 is provided with a third switch S3 and a fourth switch S4 to simulate the charging detection signal input to the domain controller 200. For example, the third switch S3 can be controlled to close, and the fourth switch S4 can be controlled to open, and then the output signal of the communication terminal of the domain controller 200 is detected, and it is determined whether the domain controller 200 allows the vehicle to be charged. In this way, the test of the charging gun signal detection function of the domain controller is realized.

[0044] Optional, reference Figure 4 As shown, the signal simulation circuit 110 also includes an analog signal generating circuit 116, referring to Figure 8 As shown, the analog signal generating circuit 116 includes: a second adjustable resistor RS2, a first end of the second adjustable resistor RS2 is connected to the fourth power supply VDD4, a second end of the second adjustable resistor RS2 is grounded GND, and an adjustment end of the second adjustable resistor RS2 is suitable for being connected to the analog signal input end VM of the domain controller 200 for simulating an input analog signal.

[0045] Specifically, the analog signal generating circuit 116 is mainly used to simulate the analog signal input to the domain controller 200 when the vehicle is working, such as the motor current sampling value, the voltage sampling value, etc. The specific type can be defined according to user needs. Among them, the fourth power supply VDD4 can be a 12v DC power supply. In actual operation, according to the voltage division principle, the second adjustable resistor RS2 can simulate the input of different analog quantities to the domain controller 200 through the adjustment end. In addition, the analog signal generating circuit 116 may include multiple second adjustable resistors RS2 to realize multiple analog signal input functions to the domain controller 200, which is not specifically limited here.

[0046] Optional, reference Figure 4 As shown, the signal simulation circuit 110 may further include a high voltage interlock signal generating circuit 117, wherein the reference Fig. 9As shown, the high-voltage interlock signal generating circuit 117 includes: a fifth switch S5, a sixth switch S6 and a high-voltage interlock signal source 1171. Among them, one end of the fifth switch S5 is suitable for being connected to the first high-voltage interlock signal detection terminal HVIL1 of the domain controller 200; one end of the sixth switch S6 is suitable for being connected to the second high-voltage interlock signal detection terminal HVIL2 of the domain controller 200; the first output end of the high-voltage interlock signal source 1171 is connected to the other end of the fifth switch S5, and the second output end of the high-voltage interlock signal source 1171 is connected to the other end of the sixth switch S6, so as to simulate the input of the high-voltage interlock signal.

[0047] Specifically, the high-voltage interlock signal generating circuit is mainly used to simulate the high-voltage interlock signal input by the vehicle to the domain controller 200, so as to implement the test of the high-voltage interlock function of the domain controller 200. When the test platform 100 needs to output the high-voltage interlock signal, the fifth switch S5 and the sixth switch S6 can be controlled to be closed, so that the high-voltage interlock signal source 1171 outputs the high-voltage interlock signal to the domain controller 200. Subsequently, the test platform 110 can obtain the corresponding processing result output by the domain controller 200 through the test port 120 to determine whether the high-voltage interlock function of the domain controller 200 is normal, thereby implementing the test of the high-voltage interlock function of the domain controller 200.

[0048] Optional, reference Figure 4 As shown, the signal simulation circuit 110 may further include a PWM signal generating circuit 118. The PWM signal generating circuit 118 is suitable for being connected to a PWM signal detecting terminal of the domain controller 200 to simulate an input PWM signal.

[0049] Specifically, the domain controller 200 usually needs one or more PWM signal detection terminals to detect the PWM signal of the vehicle to determine whether the vehicle is operating normally and make corresponding processing results. Therefore, a PWM signal generating circuit 118 is set in the test platform 100 to simulate the vehicle inputting a PWM signal to the domain controller 200. The test platform 100 can then obtain the processing result output by the domain controller 200 through the communication port 120 to verify the PWM signal detection function of the domain controller 200. Among them, the PWM signal generating circuit 118 may include a variety of PWM signal sources, which are not limited here. In addition, the test platform 100 may include multiple PWM signal generating circuits, such as 8 PWM signal generating circuits, to simultaneously test the PWM signal detection function of multiple PWM signal detection terminals of the domain controller 200, thereby improving the test efficiency of the test platform 100.

[0050] It should be noted that the signal simulation circuit 110 may include one or more of the above-mentioned electronic lock signal generating circuit 111, the wake-up signal generating circuit 112, the digital signal generating circuit 113 and other circuits to achieve the corresponding test function, which can be specifically set according to the actual test requirements. Thus, the test platform 100 can integrate multiple test functions for the domain controller 200, thereby further improving the test efficiency of the domain controller.

[0051] In some embodiments, reference Fig.10 As shown, the platform 100 further includes: a voltage accuracy sampling circuit 130 , which is suitable for being connected to a voltage output terminal VOUT of the domain controller 200 to detect an external output voltage of the domain controller 200 .

[0052] Specifically, the voltage accuracy sampling circuit 130 is mainly used to detect whether the external output voltage of the domain controller 200 is the target voltage value, so as to test the voltage output function of the domain controller 200, wherein the target voltage value may be 5V. The voltage accuracy sampling circuit 130 may be a variety of circuits, for example, the voltage accuracy sampling circuit 130 may be a voltage divider circuit, so as to obtain the specific output voltage of the domain controller 200 by using the principle of resistor voltage division, which is not specifically limited here.

[0053] In some embodiments, reference Fig.10 As shown, the platform 100 further includes: a high-side drive analog load circuit 140, a low-side drive analog load circuit 150, and a PWM signal drive analog load circuit 160. Among them, the high-side drive analog load circuit 140 is suitable for being connected to the high-side drive signal terminal HSD of the domain controller 200 to detect the high-side drive signal output by the domain controller 200; the low-side drive analog load circuit 150 is suitable for being connected to the low-side drive signal terminal LSD of the domain controller 200 to detect the low-side drive signal output by the domain controller 200; the PWM signal drive analog load circuit 160 is suitable for being connected to the PWM signal drive terminal PWM_OUT of the domain controller 200 to detect the PWM drive signal output by the domain controller 200.

[0054] Specifically, the high-side drive simulation load circuit 140 has a high-side drive load inside. When the high-side drive simulation load circuit 140 receives the high-side drive signal output by the domain controller 200, the internal high-side drive load is driven. The high-side drive load circuit 140 may include indicator lights, buzzers and other devices, so that the user can intuitively observe that the high-side drive load is driven through lights and sounds, thereby realizing the test function for the high-side drive function of the domain controller.

[0055] The PWM signal driving analog load circuit 160 may include an oscilloscope, a PWM verification device, etc. to detect whether the PWM driving signal output by the domain controller 200 is normal. The specific principle will not be expanded here.

[0056] It should be noted that the working mode of the low-side drive analog load circuit 150 is similar to the aforementioned high-side drive analog load circuit 140, which will not be described in detail here. In addition, the test platform 100 may include multiple high-side drive analog load circuits 140, low-side drive analog load circuits 150 and PWM signal drive analog load circuits 160, and the specific number can be determined according to the actual test requirements of the domain controller 200. For example, the test platform 100 may include 24 high-side drive analog load circuits 140, 12 low-side drive analog load circuits 150 and 4 PWM signal drive analog load circuits 160 to meet the test requirements of most domain controllers 200, thereby improving the test efficiency of the test platform.

[0057] In the above embodiment, by setting a high-side drive simulated load circuit, a low-side drive simulated load circuit and a PWM signal drive simulated load circuit in the test platform, the high-side drive signal, low-side drive signal and PWM drive signal detection function of the domain controller output is realized, thereby making the test function of the test platform more comprehensive.

[0058] Furthermore, the high-side drive analog load circuit 140 and the low-side drive analog load circuit 150 include relays. Since relays have good reliability, relays can be used as switching devices in the high-side drive analog load circuit 140 and the low-side drive analog load circuit 150 to improve the reliability of the test platform.

[0059] Exemplary, reference Fig.11 As shown, the high-side drive simulation load circuit 140 may include a second relay JDQ2, a second indicator light D2 and a seventh switch S7. Among them, one end of the seventh switch S7 is connected to the high-side drive signal terminal HSD of the domain controller 200, and the other end of the seventh switch S7 is respectively connected to one end of the coil of the second relay JDQ2 and one end of the switch of the second relay JDQ2; the other end of the switch of the second relay JDQ2 is grounded GND through the second indicator light D2, and the other end of the coil of the second relay JDQ2 is grounded GND. The test platform 100 can control the seventh switch S7 to close so that the high-side drive simulation load circuit 140 works normally. At this time, when the domain controller 200 normally outputs the high-side drive signal, the coil of the second relay JDQ2 is excited, and then the second indicator light D2 is illuminated, so that the user can determine that the high-side drive function of the domain controller 200 is normal according to the light.

[0060] Similarly, reference Fig.12As shown, the low-side drive simulation load circuit 150 may include a third relay JDQ3, a third indicator light D3 and an eighth switch S8. Among them, one end of the eighth switch S8 is connected to the low-side drive signal terminal LSD of the domain controller 200, the other end of the eighth switch S8 is connected to one end of the coil of the third relay JDQ3, the other end of the coil of the third relay JDQ3 is respectively connected to one end of the switch of the third relay JDQ3 and the fifth power supply VDD5, and the other end of the switch of the third relay JDQ3 is grounded GND through the third indicator light D3. The test platform 100 can control the eighth switch S8 to close so that the low-side drive simulation load circuit 150 works normally. At this time, when the domain controller 200 normally outputs the low-side drive signal, the coil of the third relay JDQ3 is excited, and then the third indicator light D2 is illuminated, so that the user can determine that the low-side drive function of the domain controller 200 is normal according to the light.

[0061] Optionally, the communication interface 120 includes one or more of a CAN interface, a LIN interface, and an Ethernet interface.

[0062] Specifically, the CAN interface, the LIN interface and the Ethernet interface are all typical communication interfaces of the domain controller 200. Therefore, setting one or more of the CAN interface, the LIN interface and the Ethernet interface in the communication interface 120 can enhance the compatibility of the test platform.

[0063] Optionally, the test platform 100 may also include a power supply circuit (not shown) to provide working power to multiple circuits in the test platform 100, including direct current and alternating current. The power supply circuit can draw power from a variety of AC and DC power sources, including a power grid, a DC battery, etc. The power supply circuit may include a variety of AC and DC voltage conversion topologies. For example, when the power supply circuit draws power from the power grid, the power supply circuit may include a rectifier circuit, a filter circuit, and a step-down circuit to provide 12V DC power supply to the test platform 100. The specific principle of the power supply circuit is not expanded here.

[0064] To summarize, according to the integrated test platform of the embodiment of the utility model, the signal simulation circuit provided internally is connected to the signal input end of the domain controller to simulate the signal input to the domain controller when the vehicle is working, and is connected to the communication end of the domain controller through the communication interface to read the signal processing result of the domain controller, thereby realizing the test function of the domain controller without the need for a real load; at the same time, by integrating various signal simulation circuits such as an electronic lock signal generating circuit, a wake-up signal generating circuit and a digital signal generating circuit inside the platform, as well as various load simulation circuits such as a high-side drive simulation load circuit, the test platform can integrate various test functions for the domain controller, thereby further improving the test efficiency of the domain controller.

[0065] It should be noted that the various parts of the utility model can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An integrated test platform for a domain controller, characterized in that: The platform (100) comprises: A signal simulation circuit (110), the signal simulation circuit (110) comprising at least one of an electronic lock signal generating circuit (111) and a wake-up signal generating circuit (112), the signal simulation circuit (110) being suitable for being connected to a signal input terminal of the domain controller (200), and being configured to simulate a signal input to the domain controller (200) when the vehicle is working; wherein the electronic lock signal generating circuit is configured to simulate an electronic lock signal input to the domain controller (200) when the vehicle is working, and the wake-up signal generating circuit is configured to simulate a wake-up signal input to the domain controller (200) when the vehicle is working; A communication interface (120), the communication interface (120) being adapted to be connected to a communication terminal of the domain controller (200) so as to read a processing result of the signal by the domain controller (200) through the communication interface (120).

2. The platform according to claim 1, characterized in that The electronic lock signal generating circuit (111) comprises: A first relay (JDQ1), one end of the coil of the first relay (JDQ1) is suitable for being connected to a first electronic lock signal detection end (LOCK1) of the domain controller, the other end of the coil of the first relay (JDQ1) is suitable for being connected to a second electronic lock signal detection end (LOCK2) of the domain controller, one end of a switch of the first relay (JDQ1) is connected to a first power supply (VDD1), and the other end of the switch of the first relay (JDQ1) is connected to an electronic lock signal feedback detection end (FK); A first indicator light (D1), one end of the first indicator light (D1) is connected to the other end of the switch of the first relay (JDQ1), and the other end of the first indicator light (D1) is grounded (GND); An electronic lock signal source (1111), wherein two ends of the electronic lock signal source (1111) are respectively connected to two ends of the coil of the first relay (JDQ1) to simulate an input electronic lock signal.

3. The platform according to claim 1, characterized in that: The wake-up signal generating circuit (112) comprises: A first switch (S1), one end of the first switch (S1) is connected to a second power supply (VDD2), and the other end of the first switch (S1) is connected to a wake-up signal detection end (WAKE) of the domain controller for simulating an input vehicle wake-up signal.

4. The platform according to claim 1, characterized in that The signal simulation circuit (110) further comprises a digital signal generating circuit (113), wherein the digital signal generating circuit (113) comprises: A second switch (S2), one end of the second switch (S2) is connected to a third power supply (VDD3), and the other end of the second switch (S2) is suitable for being connected to a first digital signal input terminal (VS1) of the domain controller for simulating input of high-level digital signals and low-level digital signals.

5. The platform according to claim 1, characterized in that: The signal simulation circuit (110) further includes a temperature sampling circuit (114), and the temperature sampling circuit (114) includes: A first adjustable resistor (RS1), wherein a first end of the first adjustable resistor (RS1) is grounded (GND), and a second end of the first adjustable resistor (RS1) is suitable for being connected to a temperature signal sampling end (TEMPC) of the domain controller to simulate an input temperature sampling signal.

6. The platform according to claim 1, characterized in that: The signal simulation circuit (110) further comprises a charging gun signal generating circuit (115), wherein the charging gun signal generating circuit (115) comprises: a first resistor (R1) and a third switch (S3), wherein one end of the first resistor (R1) is grounded (GND), and the other end of the first resistor (R1) is connected to a first charging detection end (CC1) of the domain controller through the third switch (S3) to simulate input of a first charging detection signal; A second resistor (R2) and a fourth switch (S4), one end of the second resistor (R2) is grounded (GND), and the other end of the second resistor (R2) is connected to a second charging detection end (CC2) of the domain controller through the fourth switch (S4) for simulating input of a second charging detection signal.

7. The platform according to claim 2, characterized in that: The signal simulation circuit (110) further comprises an analog signal generating circuit (116), wherein the analog signal generating circuit (116) comprises: A second adjustable resistor (RS2), wherein a first end of the second adjustable resistor (RS2) is connected to a fourth power supply (VDD4), a second end of the second adjustable resistor (RS2) is grounded (GND), and an adjustment end of the second adjustable resistor (RS2) is suitable for being connected to an analog signal input end (VM) of the domain controller for simulating an input analog signal.

8. The platform according to any one of claims 1 to 7, characterized in that: The platform (100) further comprises: A voltage precision sampling circuit (130), wherein the voltage precision sampling circuit (130) is suitable for being connected to a voltage output terminal (VOUT) of the domain controller, and is used to detect an external output voltage of the domain controller.

9. The platform according to any one of claims 1 to 7, characterized in that: The platform (100) further comprises: A high-side drive analog load circuit (140), adapted to be connected to a high-side drive signal terminal (HSD) of the domain controller, and used to detect a high-side drive signal output by the domain controller; A low-side drive analog load circuit (150), adapted to be connected to a low-side drive signal terminal (LSD) of the domain controller, and used to detect a low-side drive signal output by the domain controller; The PWM signal driven analog load circuit (160) is suitable for being connected to the PWM signal driving terminal (PWM_OUT) of the domain controller to detect the PWM driving signal output by the domain controller.

10. The platform according to claim 9, characterized in that The high-side driving simulated load circuit (140) and the low-side driving simulated load circuit (150) include relays.

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