Testing device and testing method of vehicle control system

Abstract

The invention relates to the technical field of vehicle detection, and particularly provides a vehicle control system testing device and method, and the device comprises a first detection circuit which is connected with a power supply and a detection port of a driving assistance system in a vehicle control system, and is used for collecting the consumed voltage generated at the starting moment of the driving assistance system; the processor is connected with the first detection circuit and used for collecting the consumed voltage collected by the first detection circuit and determining whether the vehicle control system is abnormal or not based on the consumed voltage. In this way, risk prediction and protection can be carried out on the driving assistance system and surrounding electric control components.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle detection, and in particular to a testing device and a testing method for a vehicle control system. Background Art

[0002] The existing electronic control unit (ECU) or transmission control unit (TCU) in the vehicle control system is equipped with a dark current detection circuit and an overcurrent detection protection circuit. However, the above dark current detection circuit and overcurrent detection protection circuit are limited to detecting and protecting the ECU / TCU control unit, and cannot predict and protect the risks of other control units in the vehicle control system, especially the Advanced Driving Assistance System (ADAS) and the surrounding electronic control components connected to the ADAS.

[0003] Moreover, since the driving assistance system has no specific output circuit, it is impossible to confirm whether it has started normally and whether it is working normally, and it is even more impossible to detect the electronic control components connected to the driving assistance system.

[0004] Therefore, how to predict and protect the risks of the driving assistance system and surrounding electronic control components has become an urgent problem to be solved. Summary of the invention

[0005] In view of this, the present invention provides a testing device and a testing method for a vehicle control system, which can predict risks and protect the driving assistance system and surrounding electronic control components.

[0006] In order to solve the above technical problems, on the one hand, the present invention provides a test device for a vehicle control system, including: a first detection circuit, connected to a power supply and a detection port of a driving assistance system in a vehicle control system, for collecting the consumption voltage generated at the moment of starting the driving assistance system; a processor, connected to the first detection circuit, for collecting the consumption voltage collected by the first detection circuit, and determining whether an abnormality occurs in the vehicle control system based on the consumption voltage.

[0007] According to some embodiments of the present invention, the first detection circuit includes a voltage detector and a detection resistor in parallel, one end of the detection resistor is connected to the detection port of the driving assistance system, and the other end of the detection resistor is connected to the power supply; wherein the voltage detector is used to collect the consumption voltage generated at the moment of starting the driving assistance system.

[0008] According to some embodiments of the present invention, corresponding to the vehicle accessory gear and the vehicle ignition gear, the detection port of the driving assistance system is divided into a first detection port and a second detection port; the first detection circuit includes a first detection sub-circuit and a second detection sub-circuit corresponding to the first detection port and the second detection port, respectively; wherein the first detection sub-circuit is connected to the power supply and the first detection port, and is used to collect the accessory consumption voltage generated at the moment of starting the driving assistance system, wherein the accessory consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when at least some of the vehicle-mounted auxiliary electrical components are turned on; the second detection sub-circuit is connected to the power supply and the second detection port, and is used to collect the ignition consumption voltage generated at the moment of starting the driving assistance system, and the ignition consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when the vehicle is in the ignition state.

[0009] According to some embodiments of the present invention, the testing device also includes: a first relay, the first relay is used to connect the power supply and the first detection sub-circuit; the second relay is used to connect the power supply and the second detection sub-circuit; wherein the first relay and the second relay are not closed at the same time, when the first relay is closed, the first detection sub-circuit is turned on; when the second relay is closed, the second detection sub-circuit is turned on.

[0010] According to some embodiments of the present invention, corresponding to the vehicle accessory gear and the vehicle ignition gear, the detection port of the driving assistance system is divided into a first detection port and a second detection port; the testing device also includes: a third relay, the third relay is used to connect the first detection circuit and the first detection port; the fourth relay, the fourth relay is used to connect the first detection circuit and the second detection port; wherein the third relay and the fourth relay are not closed at the same time, when the third relay is closed, the first detection circuit is used to collect the accessory consumption voltage generated at the moment of starting the driving assistance system, wherein the accessory consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when at least some of the vehicle-mounted auxiliary electrical components are turned on; when the fourth relay is closed, the first detection circuit is used to collect the ignition consumption voltage generated at the moment of starting the driving assistance system in the vehicle ignition state, and the ignition consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system in the vehicle ignition state.

[0011] According to some embodiments of the present invention, the testing device also includes a second detection circuit, which is used to connect to the power supply and the detection port of the driving assistance system to collect the dark current value generated by the driving assistance system in the off state, wherein the dark current value is used to determine whether the vehicle can start normally.

[0012] According to some embodiments of the present invention, the testing device further includes a fifth relay, and the fifth relay is used to connect the power supply and the second detection circuit to control the on / off of the second detection circuit.

[0013] According to some embodiments of the present invention, the processor is further used to connect to the second detection circuit to collect the dark current value collected by the second detection circuit, and determine whether the vehicle can be started normally based on the dark current value.

[0014] In a second aspect, an embodiment of the present invention provides a method for testing a vehicle control system, which is applied to a testing device for a vehicle control system in the above technical solution, wherein the testing device includes a first detection circuit and a processor connected to each other, and the method includes the following steps:

[0015] Turn on the driving assistance system in the vehicle control system; use the first detection circuit to collect the consumption voltage generated when the driving assistance system is started; use the processor to collect the consumption voltage collected by the first detection circuit, and determine whether the vehicle control system is abnormal based on the consumption voltage.

[0016] According to some embodiments of the present invention, the first detection circuit includes a voltage detector and a detection resistor connected in parallel; the step of determining whether an abnormality occurs in the vehicle control system based on the consumption voltage includes: determining the consumption current generated at the moment the driving assistance system is started based on the consumption voltage and the resistance value of the detection resistor; determining whether the consumption current exceeds a preset safety threshold; if so, determining that an abnormality occurs in the vehicle control system.

[0017] According to some embodiments of the present invention, corresponding to the vehicle accessory gear and the vehicle ignition gear, the detection port of the driving assistance system is divided into a first detection port and a second detection port, the test device further includes a third relay and a fourth relay, the third relay is used to connect the first detection circuit and the first detection port, and the fourth relay is used to connect the first detection circuit and the second detection port; the method further includes:

[0018] Start the accessory gear of the vehicle, close the third relay, and then turn on the driving assistance system; use the first detection circuit to collect the accessory consumption voltage generated at the moment of starting the driving assistance system, wherein the accessory consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when at least some of the vehicle-mounted auxiliary electrical components are turned on; disconnect the third relay, start the ignition gear of the vehicle, close the fourth relay, and then restart the driving assistance system; use the first detection circuit to collect the ignition consumption voltage generated at the moment of starting the driving assistance system, wherein the ignition consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when the vehicle is in the ignition state.

[0019] According to some embodiments of the present invention, corresponding to the vehicle accessory gear and the vehicle ignition gear, the detection port of the driving assistance system is divided into a first detection port and a second detection port, the first detection circuit includes a first detection subcircuit and a second detection subcircuit corresponding to the first detection port and the second detection port respectively; the test device also includes a first relay and a second relay, the first relay is used to connect the power supply and the first detection subcircuit, and the second relay is used to connect the power supply and the second detection subcircuit; the method also includes:

[0020] The accessory gear of the vehicle is started, the first relay is closed, and then the driving assistance system in the vehicle control system is turned on; the accessory consumption voltage generated at the moment of starting the driving assistance system is collected by using the first detection sub-circuit, wherein the accessory consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when at least some of the vehicle-mounted auxiliary electrical components are turned on; the first relay is disconnected, and after a preset time, the ignition gear of the vehicle is started, the second relay is closed, and then the driving assistance system is restarted; the ignition consumption voltage generated at the moment of starting the driving assistance system is collected by using the second detection sub-circuit, wherein the ignition consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when the vehicle is in the ignition state.

[0021] According to some embodiments of the present invention, the testing device also includes a second detection circuit and a fifth relay, and the fifth relay is used to connect the power supply to the second detection circuit; the method also includes: when the vehicle is not started, closing the fifth relay; using the second detection circuit to collect the dark current value generated by the driving assistance system in the off state; disconnecting the fifth relay, and then turning on the driving assistance system, and using the first detection circuit to collect the consumption voltage generated at the moment of starting the driving assistance system; after the consumption current detection operation is completed, using the processor to collect the consumption voltage and dark current values, and determining whether the vehicle control system is abnormal based on the consumption voltage, and determining whether the vehicle can start normally based on the dark current value.

[0022] The above technical solution of the present invention has at least one of the following beneficial effects:

[0023] By setting up a first detection circuit, monitoring the consumption voltage at the moment of starting the driving assistance system, and then using the processor to determine whether the driving assistance system and surrounding electronic control components in the vehicle control system are abnormal based on the consumption voltage, the problem of being unable to predict and protect the risks of the driving assistance system and surrounding electronic control components can be effectively solved, making the vehicle control system safer and more reliable. Moreover, it is possible to determine whether the driving assistance system and surrounding electronic control components are abnormal at the moment of starting the driving assistance system, which has extremely high timeliness and can further improve the safety and stability of the vehicle control system.

[0024] In addition, the accessory consumption voltage detected by the first detection subcircuit can determine whether the driving assistance system and the turned-on vehicle-mounted auxiliary electrical components (such as air conditioners, lights, etc.) are abnormal at the moment of startup. The ignition consumption voltage detected by the second detection subcircuit can determine whether the driving assistance system and all vehicle-mounted electrical components are abnormal at the moment of startup.

[0025] In addition, one detection circuit structure of the first detection circuit can be reused, and the first detection circuit can be selected to detect the accessory consumption voltage or the ignition consumption voltage by opening / closing the third relay and the fourth relay. By designing the reuse of one detection circuit structure of the first detection circuit, the consistency of the detection accuracy of the accessory consumption voltage and the ignition consumption voltage can be ensured. Moreover, there is no need to debug the multiple detection circuit structures one by one, which saves debugging time and can reduce the cost of additionally setting up detection devices in the first detection circuit. In addition, after the monitoring of one of the voltages, the accessory consumption voltage or the ignition consumption voltage, is completed, there is no need to wait for the consumption current of that circuit to decay to 0 before starting the monitoring of the other voltage, which can greatly reduce the test waiting time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a detection ECU / TCU control unit in an embodiment;

[0027] Figure 2 A schematic diagram of a vehicle control system testing device according to an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a vehicle control system testing device according to an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of a vehicle control system testing device according to an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of a vehicle control system testing device according to an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of a vehicle control system testing device according to an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of a vehicle control system testing device according to an embodiment of the present invention;

[0033] Figure 8 A flow chart of a method for testing a vehicle control system according to an embodiment of the present invention;

[0034] Fig. 9 A flow chart of a method for testing a vehicle control system according to an embodiment of the present invention;

[0035] Fig.10 A flow chart of a method for testing a vehicle control system according to an embodiment of the present invention;

[0036] Fig.11 The present invention is a flow chart of a method for testing a vehicle control system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] The ECU control unit or TCU control unit in the existing vehicle control system is only equipped with a dark current detection circuit and an overcurrent detection protection circuit. The purpose of detecting the dark current is to prevent the static current from being too large, which may cause the battery of the vehicle power supply system to be underpowered and unable to start normally; the purpose of overcurrent detection is to perform automatic reset and other operations for self-protection when abnormal conditions such as short circuit / open circuit occur.

[0039] like Figure 1 As shown, the detection ports "VB" and "IGN" of the ECU / TCU control unit are connected to the power supply through relays. The ECU / TCU control unit is connected to the dark current detection circuit in the inspection machine through the detection port "VB", and the dark current detection circuit is connected to the power supply through a relay to perform dark current detection on the ECU / TCU control unit. Overcurrent detection protection circuit ( Figure 1 The ECU / TCU control unit (not shown) may be arranged inside the ECU / TCU control unit or at the inspection machine. Among them, "HS1", "LS1", "CANH1" and "CNAL1" are communication ports of the ECU / TCU control unit, which are used to communicate with the load.

[0040] However, the above-mentioned dark current detection circuit and overcurrent detection protection circuit are limited to detecting and protecting the ECU / TCU control unit, and cannot perform risk prediction and protection on other control units in the vehicle control system, especially the driving assistance system and surrounding electronic control components connected to the driving assistance system.

[0041] The driving assistance system senses the surrounding environment at any time while the vehicle is driving, collects external data (such as ECU control unit, TCU control unit, millimeter wave radar, lidar, camera or satellite navigation, etc.) to identify static and / or dynamic objects, and combines navigation data to perform system calculations and analysis and judgment, so as to predict possible dangers in advance and take measures to avoid them.

[0042] The specific working process of the driving assistance system may include: information collection, data analysis and instruction issuance, and execution of actions. "Information collection" refers to: collecting external data, which includes: data from various sensors, vehicle operating status and parameter changes, and converting the constantly changing mechanical motion into electronic parameters (current or voltage). "Data analysis and instruction issuance" refers to: analyzing and processing external data, and then issuing action instructions to the corresponding execution device, where the execution device may include but is not limited to throttle, brake, light, sound, air conditioning, etc. "Execution of action" means: the execution device that receives the action instruction executes the action according to the action instruction, thereby making the vehicle drive more safely.

[0043] At present, the testing of driving assistance system is to use the inspection machine to test the input of various analog and digital signals of driving assistance system, or simulate the data input of various sensors, so as to simulate the actual driving state of the vehicle. The driving assistance system collects data, performs system calculation and analysis to dynamically process the vehicle driving, and then completes the testing of driving assistance system by judging the dynamic processing.

[0044] However, since the driving assistance system has no specific output circuit (no actual load or a passive load is connected), it is impossible to confirm whether it has started normally and whether it is working normally, and it is even more impossible to predict and protect the risks of the electronic control components connected around the driving assistance system.

[0045] Therefore, in order to solve the above-mentioned problem of being unable to predict and protect the risks of the driving assistance system and the surrounding electronic control components, the applicant has found through extensive research that the predictive monitoring of the system requires the response of a rapid response system, and a key function of the rapid response system is to monitor the current consumption of the system. Since the above-mentioned ECU / TCU control unit has an actual load connection, the numerical value of the current consumption when the actual load is working is quite different, so it is not very meaningful to monitor the consumption current or consumption voltage generated at the startup moment of the ECU / TCU control unit. The driving assistance system only sends the action instruction to the execution device after data processing and analysis of the collected external data. Since the driving assistance system has no actual load, the consumption current generated at the startup moment is basically the same. Therefore, by monitoring the consumption voltage or consumption current generated at the startup moment of the driving assistance system, on the one hand, it can confirm whether the driving assistance system itself is started and working normally, and on the other hand, it can also predict in advance whether the electronic control components connected around the driving assistance system are abnormal, so that early warning can be given in case of abnormality and corresponding protection processing can be performed to ensure that the vehicle control system is safer and more reliable.

[0046] Therefore, an embodiment of the present invention proposes a test device for a vehicle control system, in which a first detection circuit is provided. The first detection circuit can utilize the characteristic that the driving assistance system has no actual load, and predict the risks of the driving assistance system and surrounding electronic control components by monitoring the consumption voltage generated at the moment of starting the driving assistance system, so as to be able to give early warning and perform corresponding protection processing in case of abnormality, thereby realizing more comprehensive monitoring and protection of the vehicle control system.

[0047] The following is a detailed description of the vehicle control system testing device according to the embodiment of the present invention in conjunction with the accompanying drawings and embodiments.

[0048] like Figure 2 As shown, a vehicle control system test device 10 (hereinafter referred to as the test device) according to an embodiment of the present invention includes a power supply 11 , a first detection circuit 12 and a processor 13 .

[0049] The power supply 11 is used to supply power to the first detection circuit 12. The first detection circuit 12 is connected to the power supply 11 and the detection port of the driving assistance system in the vehicle control system, and is used to collect the consumption voltage generated when the driving assistance system is started. The processor 13 is connected to the first detection circuit 12, and is used to collect the consumption voltage collected by the first detection circuit 12, and determine whether the vehicle control system is abnormal based on the consumption voltage. The processor 13 can determine whether the driving assistance system and the surrounding electric control components in the vehicle control system are abnormal based on the consumption voltage, so as to solve the problem that the driving assistance system and the surrounding electric control components cannot be risk predicted and protected.

[0050] In one embodiment, the test device 10 may also include an alarm circuit (not shown in the figure), which is used to connect to the processor 13 so that when the processor 13 determines that an abnormality occurs in the vehicle control system, an alarm signal is issued and the test is terminated so as to perform corresponding protection processing.

[0051] The test device 10 in this embodiment monitors the consumption voltage at the moment of starting the driving assistance system by setting the first detection circuit 12, and then uses the processor 13 to determine whether the driving assistance system and the surrounding electric control components in the vehicle control system are abnormal based on the consumption voltage, which can effectively solve the problem of being unable to predict and protect the risks of the driving assistance system and the surrounding electric control components, making the vehicle control system safer and more reliable. Moreover, it can determine whether the driving assistance system and the surrounding electric control components are abnormal at the moment of starting the driving assistance system, which has extremely high timeliness and can further improve the safety and stability of the vehicle control system.

[0052] Corresponding to the vehicle accessory gear (ACCESS gear) and the vehicle ignition gear (IGN gear), the detection port of the driving assistance system can be divided into a first detection port and a second detection port, or in other words, the first detection port corresponds to the vehicle accessory gear, and the second detection port corresponds to the vehicle ignition gear. In the vehicle accessory gear, only some of the vehicle's onboard auxiliary electrical components (such as air conditioning, lights, etc.) are turned on. In other words, only some of the vehicle's auxiliary functions can be used. In the vehicle ignition gear, the vehicle is in the ignition state, and all vehicle functions can be used normally. In the vehicle ignition gear, in addition to the vehicle-mounted auxiliary electrical components turned on in the vehicle accessory gear, the engine is also started.

[0053] In one embodiment, if Figure 3 As shown, the first detection circuit 12 may include a first detection subcircuit 121 and a second detection subcircuit 122 corresponding to the first detection port ("VB" shown in the figure) and the second detection port ("IGN" shown in the figure), respectively. In other words, the first detection circuit 12 in this embodiment may include two detection circuit structures (corresponding to the circuit structures of the first detection subcircuit 121 and the second detection subcircuit 122, respectively), wherein the circuit structures of the first detection subcircuit 121 and the second detection subcircuit 122 may be the same or different, as long as voltage detection can be realized, and no limitation is made here.

[0054] The first detection subcircuit 121 is connected to the power supply 11 and the first detection port VB, and is used to collect the accessory consumption voltage generated at the moment of starting the driving assistance system. The accessory consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when at least some of the vehicle-mounted accessory electrical components are turned on. The accessory consumption voltage detected by the first detection subcircuit 121 can determine whether the driving assistance system and the turned-on vehicle-mounted accessory electrical components are abnormal at the moment of starting.

[0055] The second detection subcircuit 122 is connected to the power supply 11 and the second detection port IGN, and is used to collect the ignition consumption voltage generated when the driving assistance system is started. The ignition consumption voltage is the consumption voltage generated when the driving assistance system is started when the vehicle is in the ignition state. The ignition consumption voltage detected by the second detection subcircuit 122 can determine whether the driving assistance system and all vehicle-mounted electrical components are abnormal at the moment of startup.

[0056] In one embodiment, if Figure 4As shown, the test device 10 may also include a first relay and a second relay. The first relay is used to connect the power supply 11 and the first detection subcircuit 121, and the second relay is used to connect the power supply 11 and the second detection subcircuit 122. The first relay and the second relay are used to control the opening / closing of the first detection subcircuit 121 and the second detection subcircuit 122 respectively. The first relay and the second relay are not closed at the same time. When the first relay is closed, the first detection subcircuit 121 is turned on to collect the accessory consumption voltage generated at the moment of starting the driving assistance system by using the first detection subcircuit 121; when the second relay is closed, the second detection subcircuit 122 is turned on to collect the ignition consumption voltage generated at the moment of starting the driving assistance system by using the second detection subcircuit 122.

[0057] In one embodiment, if Figure 5 As shown, the first detection circuit 12 may also be provided with only one detection circuit structure (such as any one of the first detection subcircuit 121 and the second detection subcircuit 122). The test device 10 may include a third relay and a fourth relay. The third relay is used to connect the first detection circuit 12 and the first detection port VB, and the fourth relay is used to connect the first detection circuit 12 and the second detection port IGN.

[0058] The third relay and the fourth relay are not closed at the same time. When the third relay is closed, the first detection circuit 12 is used to collect the accessory consumption voltage generated when the driving assistance system is started. When the fourth relay is closed, the first detection circuit 12 is used to collect the ignition consumption voltage generated when the driving assistance system is started in the vehicle ignition state.

[0059] This embodiment can reuse one detection circuit structure of the first detection circuit 12, and select the first detection circuit 12 to detect the accessory consumption voltage or the ignition consumption voltage by opening / closing the third relay and the fourth relay. By reusing the design of one detection circuit structure of the first detection circuit 12, the consistency of the detection accuracy of the accessory consumption voltage and the ignition consumption voltage can be ensured. In addition, there is no need to debug the multiple detection circuit structures one by one, which saves debugging time and can reduce the cost of additionally setting up detection devices in the first detection circuit 12. In addition, after the monitoring of one of the accessory consumption voltage or the ignition consumption voltage is completed, there is no need to wait for the consumption current of the circuit to decay to 0 before starting the monitoring of the other voltage, which can greatly reduce the test waiting time.

[0060] In one embodiment, if Figure 6As shown, the first detection circuit 12 may include a voltage detector and a detection resistor connected in parallel, one end of the detection resistor is connected to the detection port of the driving assistance system, and the other end of the detection resistor is connected to the power supply 11. The voltage detector is used to collect the consumption voltage generated when the driving assistance system is started. Figure 6 The "CAN1H", "CAN1L", "ET1+" and "ET1-" shown in are communication ports of the driving assistance system, which are used to communicate with surrounding electronic control components; "OCX" is used to indicate the Xth relay.

[0061] When the driving assistance system is started, the consumption current flows through the detection resistor through the detection port. At this time, the voltage across the detection resistor is collected by a voltage detector connected in parallel with the detection resistor to obtain the consumption voltage. After collecting the consumption voltage collected by the first detection circuit 12, the processor 13 can determine the consumption current generated at the moment of the driving assistance system starting according to the consumption voltage and the resistance value of the detection resistor, and then use the consumption current to determine whether the driving assistance system and the surrounding electronic control components are abnormal, for example, when the consumption current is too large, it is determined that an abnormality occurs.

[0062] It can be understood that “the first detection circuit 12 may include a voltage detector and a detection resistor connected in parallel” means that Figure 6 In the case where a detection circuit structure is provided in the first detection circuit 12 shown in FIG. 1 , the first detection circuit 12 includes a voltage detector and a detection resistor connected in parallel. In other words, the voltage detector and the detection resistor connected in parallel are a detection circuit structure in the first detection circuit 12. In other embodiments, as Figure 7 As shown, when the first detection circuit 12 is provided with a two-path detection circuit structure (ie, including a first detection subcircuit 121 and a second detection subcircuit 122 ), the first detection circuit 12 may include two parallel voltage detectors and detection resistors.

[0063] In one embodiment, the first detection circuit 12 generally uses a detection resistor with high precision and small resistance to adapt to a larger consumption current (generally mA level), reduce the impact on the resistance of the original circuit, and thus improve the detection accuracy of the consumption voltage. The resistance of the detection resistor in the first detection circuit 12 can generally be selected as 0.1Ω±1%. In other embodiments, detection resistors with other resistance values ​​can also be selected according to actual needs, which is not limited here.

[0064] Please continue reading Figure 6 and Figure 7 In one embodiment, the test device 10 may further include a second detection circuit 14. The second detection circuit 14 is used to communicate with the power supply 11 and the detection port ( Figure 6 and Figure 7Taking the connection to the first detection port VB as an example) is connected to collect the dark current value generated by the driving assistance system in the off state, wherein the dark current value is used to determine whether the vehicle can be started normally.

[0065] Dark current refers to static current. By setting the second detection circuit 14, it is possible to prevent the static current from being too large, thereby causing the battery of the automobile power supply system to be underpowered and unable to start normally. In one embodiment, the dark current value collected by the second detection circuit 14 can be obtained manually or by host computer test software, and whether the vehicle can start normally can be determined based on the dark current value. In one embodiment, the processor 13 can also be used to connect to the second detection circuit 14 to collect the dark current value collected by the second detection circuit 14, and determine whether the vehicle can start normally based on the dark current value.

[0066] Understandably, Figure 6 and Figure 7 Taking the second detection circuit 14 including a voltage detector and a detection resistor connected in parallel as an example, one end of the detection resistor in the second detection circuit 14 is connected to the first detection port VB of the driving assistance system, and the other end of the detection resistor is connected to the power supply 11. The voltage across the detection resistor is acquired by the voltage detector, and then the dark current value is calculated by the formula I=U / R.

[0067] The second detection circuit 14 generally uses a detection resistor with high precision and large resistance to adapt to a smaller dark current (generally at the uA level), thereby improving the detection accuracy of the dark current. The resistance of the detection resistor can generally be selected as 1kΩ±1%. In other embodiments, other resistance values ​​can be selected according to actual needs, which is not limited here.

[0068] In one embodiment, the testing device 10 may further include a fifth relay OC5 , and the fifth relay OC5 is used to connect the power supply 11 and the second detection circuit 14 to control the on / off of the second detection circuit 14 .

[0069] In one embodiment, the test device 10 may further include a sixth relay OC6 and a seventh relay OC7. The sixth relay OC6 is used to connect the power supply 11 to the first detection port VB of the driving assistance system, and the seventh relay OC7 is used to connect the power supply 11 to the second detection port IGN of the driving assistance system. The sixth relay OC6 and the seventh relay OC7 are used to disconnect when the first detection circuit 12 and / or the second detection circuit 14 are turned on, or in other words, disconnect when the first detection circuit 12 and / or the second detection circuit 14 monitors the voltage; and close when it is determined that the vehicle control system has no abnormality and can be started normally, so as to perform other test operations on the vehicle control system later.

[0070] like Figure 8As shown, the vehicle control system test method of the embodiment of the present invention (hereinafter referred to as the test method) is applied to the vehicle control system test device 10 in the above embodiment, wherein the test device 10 at least includes a first detection circuit 12 and a processor 13 connected to each other, and the structure of the test device 10 is not described here. The test method includes the following steps:

[0071] Step 110: Turn on the driving assistance system in the vehicle control system.

[0072] Step 120: Using the first detection circuit to collect the consumption voltage generated when the driving assistance system is started.

[0073] Step 130: Utilize a processor to collect the consumption voltage collected by the first detection circuit, and determine whether an abnormality occurs in the vehicle control system based on the consumption voltage.

[0074] In one embodiment, the first detection circuit 12 may include a voltage detector and a detection resistor connected in parallel. The step of determining whether the vehicle control system is abnormal based on the consumption voltage, that is, the above step 130 may include: determining the consumption current generated at the moment of starting the driving assistance system based on the consumption voltage and the resistance value of the detection resistor. Determine whether the consumption current exceeds a preset safety threshold. If it is determined that the consumption current exceeds the preset safety threshold, it is determined that the vehicle control system is abnormal.

[0075] Taking the resistance of the detection resistor as R and the consumption voltage as U as an example, the consumption current I can be determined using the formula I=U / R. Then, by comparing the consumption current I with the preset safety threshold, when the consumption current I exceeds the preset safety threshold, it is determined that the vehicle control system is abnormal, and a protection operation is performed in time. It can be understood that the preset safety threshold can be set according to the actual situation and is not limited here.

[0076] In one embodiment, corresponding to the vehicle accessory gear and the vehicle ignition gear, the detection port of the driving assistance system is divided into a first detection port VB and a second detection port IGN, and the first detection circuit 12 includes a first detection subcircuit 121 and a second detection subcircuit 122 corresponding to the first detection port VB and the second detection port IGN respectively; the test device 10 also includes a first relay and a second relay, the first relay is used to connect the power supply 11 and the first detection subcircuit 121, and the second relay is used to connect the power supply 11 and the second detection subcircuit 122. Fig. 9 As shown, the test method may also include:

[0077] Step 210: Activate the accessory gear of the vehicle, close the first relay, and then activate the driving assistance system in the vehicle control system.

[0078] Step 220: Using the first detection sub-circuit to collect the accessory consumption voltage generated when the driving assistance system is started.

[0079] The first detection subcircuit 121 is used to collect the accessory consumption voltage generated when the driving assistance system is started. The accessory consumption voltage is the consumption voltage generated when at least some of the vehicle-mounted accessory electrical components are turned on.

[0080] Step 230: disconnect the first relay, start the ignition gear of the vehicle after a preset time, close the second relay, and then restart the driving assistance system.

[0081] By waiting for the preset time, the consumption current of the first detection subcircuit 121 can be completely discharged, and then the second detection subcircuit 122 is started, thereby improving the accuracy of the ignition consumption voltage collected by the second detection subcircuit 122. The length of the preset time can be set according to actual needs and is not limited here.

[0082] Step 240: Utilize the second detection sub-circuit to collect the ignition consumption voltage generated when the driving assistance system is started.

[0083] The second detection subcircuit 122 is used to collect the ignition consumption voltage generated when the driving assistance system is started. The ignition consumption voltage is the consumption voltage generated when the driving assistance system is started when the vehicle is in the ignition state.

[0084] In one embodiment, corresponding to the vehicle accessory gear and the vehicle ignition gear, the detection port of the driving assistance system can be divided into a first detection port VB and a second detection port IGN, and the test device 10 further includes a third relay and a fourth relay, the third relay is used to connect the first detection circuit 12 and the first detection port VB, and the fourth relay is used to connect the first detection circuit 12 and the second detection port IGN. Fig.10 As shown, the test method may also include:

[0085] Step 310: Start the accessory gear of the vehicle, close the third relay, and then turn on the driving assistance system.

[0086] Step 320: Utilize the first detection circuit to collect the accessory consumption voltage generated when the driving assistance system is started.

[0087] Step 330: Disconnect the third relay, start the ignition gear of the vehicle, close the fourth relay, and then restart the driving assistance system.

[0088] Step 340: Using the first detection circuit to collect the ignition consumption voltage generated when the driving assistance system is started.

[0089] In one embodiment, the testing device 10 further includes a second detection circuit 14 and a fifth relay, and the fifth relay is used to connect the power supply 11 and the second detection circuit 14. Fig.11 As shown, the test method also includes:

[0090] Step 410: When the vehicle is not started, close the fifth relay.

[0091] When the vehicle is not started, the fifth relay is closed. It can be understood that "the vehicle is not started" means that the vehicle is not powered on, that is, all the onboard electrical components in the vehicle are not turned on, and at this time, all relays except the fifth relay remain in the open state.

[0092] Step 420: Utilize the second detection circuit to collect the dark current value generated by the driving assistance system in the ignition-off state.

[0093] Step 430: disconnect the fifth relay, and then start the driving assistance system, and use the first detection circuit to collect the consumption voltage generated when the driving assistance system is started.

[0094] The fifth relay is disconnected, and then the driving assistance system is turned on, and the consumption voltage generated at the moment of starting the driving assistance system is collected by using the first detection circuit 12 , that is, the above steps 110 to 120 are executed.

[0095] Step 440: After the consumption current detection operation is completed, the consumption voltage and dark current values ​​are collected by the processor, and whether the vehicle control system is abnormal based on the consumption voltage, and whether the vehicle can be started normally based on the dark current value.

[0096] In one embodiment, the test device 10 may further include a sixth relay and a seventh relay. The sixth relay is used to connect the power supply 11 to the first detection port VB of the driving assistance system, and the seventh relay is used to connect the power supply 11 to the second detection port IGN of the driving assistance system. The test method may also include: when the first detection circuit 12 and / or the second detection circuit 14 is turned on, or when the first detection circuit 12 and / or the second detection circuit 14 monitors the voltage, the sixth relay and the seventh relay are disconnected. When it is determined that the vehicle control system has no abnormality and can be started normally, the sixth relay and the seventh relay are closed so as to perform other test operations on the vehicle control system later.

[0097] Combine the following Figure 6 and Figure 7 The specific embodiment of the testing device 10 shown is used to introduce the above-mentioned testing method.

[0098] First, see Figure 6 , testing methods may include:

[0099] 1. When the vehicle is not started, the third relay OC3, the fourth relay OC4, the sixth relay OC6 and the seventh relay OC7 are disconnected, and the fifth relay OC5 is closed.

[0100] 2. The second detection circuit 14 is used to collect the dark current value generated by the driving assistance system in the ignition off state.

[0101] 3. Disconnect the fifth relay OC5.

[0102] 4. Start the vehicle's accessory gear, close the third relay OC3, and then turn on the driving assistance system.

[0103] 5. The first detection circuit 12 is used to collect the accessory consumption voltage generated when the driving assistance system is started.

[0104] 6. Disconnect the third relay OC3, start the vehicle's ignition gear, close the fourth relay OC4, and then restart the driving assistance system.

[0105] 7. Use the first detection circuit 12 to collect the ignition consumption voltage generated when the driving assistance system is started.

[0106] 8. After the consumption current detection operation is completed, the processor 13 is used to collect the consumption voltage and dark current values, and determine whether the vehicle control system is abnormal based on the consumption voltage, and determine whether the vehicle can be started normally based on the dark current value.

[0107] 9. After confirming that the vehicle control system has no abnormality and can be started normally, close the sixth relay OC6 and the seventh relay OC7 to perform other test operations on the vehicle control system.

[0108] See also Figure 7 , testing methods may include:

[0109] 1. When the vehicle is not started, the first relay OC1, the second relay OC2, the sixth relay OC6 and the seventh relay OC7 are disconnected, and the fifth relay OC5 is closed.

[0110] 2. The second detection circuit 14 is used to collect the dark current value generated by the driving assistance system in the ignition off state.

[0111] 3. Disconnect the fifth relay OC5.

[0112] 4. Start the vehicle's accessory gear, close the first relay OC1, and then turn on the driving assistance system in the vehicle control system.

[0113] 5. Use the first detection sub-circuit 121 to collect the accessory consumption voltage generated when the driving assistance system is started.

[0114] 6. Disconnect the first relay OC1, start the vehicle's ignition gear after a preset time, close the second relay OC2, and then restart the driving assistance system.

[0115] 7. Use the second detection sub-circuit 122 to collect the ignition consumption voltage generated when the driving assistance system is started.

[0116] 8. After the consumption current detection operation is completed, the processor 13 is used to collect the consumption voltage and dark current values, and determine whether the vehicle control system is abnormal based on the consumption voltage, and determine whether the vehicle can be started normally based on the dark current value.

[0117] 9. After confirming that the vehicle control system has no abnormality and can be started normally, close the sixth relay OC6 and the seventh relay OC7 to perform other test operations on the vehicle control system.

[0118] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A vehicle control system test device, characterized in that: include: A first detection circuit is connected to the power supply and the detection port of the driving assistance system in the vehicle control system, and is used to collect the consumption voltage generated at the moment of starting the driving assistance system; The processor is connected to the first detection circuit and is used to collect the consumption voltage collected by the first detection circuit and determine whether the vehicle control system is abnormal based on the consumption voltage.

2. The testing device according to claim 1, characterized in that: The first detection circuit includes a voltage detector and a detection resistor connected in parallel, one end of the detection resistor is connected to the detection port of the driving assistance system, and the other end of the detection resistor is connected to the power supply; The voltage detector is used to collect the consumption voltage generated at the moment when the driving assistance system is started.

3. The testing device according to claim 1, characterized in that: Corresponding to the vehicle accessory gear position and the vehicle ignition gear position, the detection port of the driving assistance system is divided into a first detection port and a second detection port; the first detection circuit includes a first detection subcircuit and a second detection subcircuit corresponding to the first detection port and the second detection port respectively; The first detection subcircuit is connected to the power supply and the first detection port, and is used to collect the accessory consumption voltage generated at the moment of starting the driving assistance system, wherein the accessory consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when at least part of the vehicle-mounted accessory electrical components are turned on; The second detection subcircuit is connected to the power supply and the second detection port, and is used to collect the ignition consumption voltage generated when the driving assistance system is started. The ignition consumption voltage is the consumption voltage generated when the driving assistance system is started when the vehicle is in the ignition state.

4. The testing device according to claim 3, characterized in that: The testing device also includes: a first relay, the first relay being used to connect the power supply and the first detection sub-circuit; a second relay, the second relay being used to connect the power supply and the second detection sub-circuit; The first relay and the second relay are not closed at the same time. When the first relay is closed, the first detection subcircuit is turned on; when the second relay is closed, the second detection subcircuit is turned on.

5. The testing device according to claim 1, characterized in that: Corresponding to the vehicle accessory gear position and the vehicle ignition gear position, the detection port of the driving assistance system is divided into a first detection port and a second detection port; The testing device also includes: a third relay, the third relay being used to connect the first detection circuit and the first detection port; a fourth relay, the fourth relay being used to connect the first detection circuit and the second detection port; The third relay and the fourth relay are not closed at the same time. When the third relay is closed, the first detection circuit is used to collect the accessory consumption voltage generated at the moment of starting the driving assistance system, wherein the accessory consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when at least some of the vehicle-mounted auxiliary electrical components are turned on; when the fourth relay is closed, the first detection circuit is used to collect the ignition consumption voltage generated at the moment of starting the driving assistance system when the vehicle is ignited, and the ignition consumption voltage is the consumption voltage generated at the moment of starting the driving assistance system when the vehicle is ignited.

6. The testing device according to claim 1, characterized in that: The testing device also includes a second detection circuit, which is used to connect to the power supply and the detection port of the driving assistance system to collect the dark current value generated by the driving assistance system in the off state, wherein the dark current value is used to determine whether the vehicle can start normally.

7. The testing device according to claim 6, characterized in that: The testing device further includes a fifth relay, and the fifth relay is used to connect the power supply and the second detection circuit to control the on / off of the second detection circuit.

8. The testing device according to claim 6, characterized in that: The processor is also used to connect to the second detection circuit to collect the dark current value collected by the second detection circuit, and determine whether the vehicle can be started normally based on the dark current value.

9. A method for testing a vehicle control system, characterized in that: A test device for a vehicle control system according to any one of claims 1 to 8, wherein the test device comprises a first detection circuit and a processor connected to each other, and the method comprises the following steps: Turn on the driving assistance system in the vehicle control system; Using the first detection circuit to collect the consumption voltage generated at the moment when the driving assistance system is started; The processor is used to collect the consumption voltage collected by the first detection circuit, and based on the consumption voltage, it is determined whether the vehicle control system is abnormal.

10. The vehicle control system testing method according to claim 9, characterized in that: The first detection circuit includes a voltage detector and a detection resistor connected in parallel; the step of determining whether the vehicle control system is abnormal based on the consumption voltage includes: Determining the consumption current generated at the moment of starting the driving assistance system based on the consumption voltage and the resistance value of the detection resistor; Determining whether the current consumption exceeds a preset safety threshold; If so, it is determined that an abnormality occurs in the vehicle control system.

11. The vehicle control system testing method according to claim 9, characterized in that: Corresponding to the vehicle accessory gear and the vehicle ignition gear, the detection port of the driving assistance system is divided into a first detection port and a second detection port, the test device also includes a third relay and a fourth relay, the third relay is used to connect the first detection circuit and the first detection port, and the fourth relay is used to connect the first detection circuit and the second detection port; the method also includes: Starting the accessory gear of the vehicle, closing the third relay, and then turning on the driving assistance system; collecting, by means of the first detection circuit, an accessory consumption voltage generated at the moment of starting the driving assistance system, wherein the accessory consumption voltage is a consumption voltage generated at the moment of starting the driving assistance system when at least some of the vehicle-mounted accessory electrical components are turned on; disconnecting the third relay, starting the ignition gear of the vehicle, closing the fourth relay, and then restarting the driving assistance system; The first detection circuit is used to collect the ignition consumption voltage generated at the moment when the driving assistance system is started, wherein the ignition consumption voltage is the consumption voltage generated at the moment when the driving assistance system is started under the ignition state of the vehicle.

12. The vehicle control system testing method according to claim 9, characterized in that: Corresponding to the vehicle accessory gear and the vehicle ignition gear, the detection port of the driving assistance system is divided into a first detection port and a second detection port, the first detection circuit includes a first detection subcircuit and a second detection subcircuit corresponding to the first detection port and the second detection port respectively; the test device also includes a first relay and a second relay, the first relay is used to connect the power supply and the first detection subcircuit, and the second relay is used to connect the power supply and the second detection subcircuit; The method further comprises: Starting the accessory gear of the vehicle, closing the first relay, and then starting the driving assistance system in the vehicle control system; collecting, by means of the first detection subcircuit, an accessory consumption voltage generated at the moment of starting the driving assistance system, wherein the accessory consumption voltage is a consumption voltage generated at the moment of starting the driving assistance system when at least some of the vehicle-mounted accessory electrical components are turned on; disconnecting the first relay, starting the ignition gear of the vehicle after a preset time, closing the second relay, and then restarting the driving assistance system; The second detection subcircuit is used to collect the ignition consumption voltage generated at the moment when the driving assistance system is started, wherein the ignition consumption voltage is the consumption voltage generated at the moment when the driving assistance system is started under the ignition state of the vehicle.

13. The vehicle control system testing method according to claim 9, characterized in that: The testing device further includes a second detection circuit and a fifth relay, wherein the fifth relay is used to connect a power supply to the second detection circuit; and the method further includes: When the vehicle is not started, closing the fifth relay; Using the second detection circuit to collect the dark current value generated by the driving assistance system in the ignition-off state; disconnecting the fifth relay, and then starting the driving assistance system, and using the first detection circuit to collect the consumption voltage generated at the moment of starting the driving assistance system; After the consumption current detection operation is completed, the processor is used to collect the consumption voltage and the dark current value, and determine whether the vehicle control system is abnormal based on the consumption voltage, and determine whether the vehicle can be started normally based on the dark current value.

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