CN216927595U - Automatic testing device and system of vehicle-mounted equipment - Google Patents
Automatic testing device and system of vehicle-mounted equipment Download PDFInfo
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- CN216927595U CN216927595U CN202220552168.3U CN202220552168U CN216927595U CN 216927595 U CN216927595 U CN 216927595U CN 202220552168 U CN202220552168 U CN 202220552168U CN 216927595 U CN216927595 U CN 216927595U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The embodiment of the application provides an automatic testing arrangement and system of mobile unit, and this automatic testing arrangement includes: the vehicle-mounted power supply control system comprises a controller provided with a plurality of serial ports and bus interfaces, a vehicle-mounted network bus circuit, a power supply control circuit, an input control circuit and an output indication circuit, wherein the vehicle-mounted network bus circuit, the power supply control circuit, the input control circuit and the output indication circuit are respectively connected with the controller through the serial ports or the bus interfaces; the vehicle-mounted network bus circuit is used for connecting the tested vehicle-mounted equipment; the power supply control circuit is used for connecting a power supply of the tested vehicle-mounted equipment; the input control circuit is used for receiving a test instruction input by a user; the controller is used for testing the bus network or the power supply circuit of the tested vehicle-mounted equipment through the vehicle-mounted network bus circuit or the power supply control circuit; the output indicating circuit is used for indicating the state of the tested vehicle-mounted equipment when the equipment responds to the abnormity. Through the automatic testing device, repeated special reliability tests can be performed on the vehicle-mounted equipment for many times, and manpower tests, time costs and the like are greatly reduced.
Description
Technical Field
The application relates to the technical field of vehicle-mounted equipment, in particular to an automatic testing device and system of vehicle-mounted equipment.
Background
At present, when special tests such as CAN protocol communication, power supply simulation, vehicle body action and the like are carried out on vehicle-mounted equipment, manual operation is mainly carried out by a tester. The can (controller Area network), i.e., a controller Area network, is a serial data communication protocol, and can complete framing processing of most communication data on an automobile. It can be seen that, in order to ensure the accuracy of the test, each test needs to be repeated many times, which is a great challenge for the tester. On one hand, the labor cost is too large, and personnel are required to participate in the whole testing process, on the other hand, the personnel easily feel fatigue because the same action is repeatedly executed, and the testing efficiency is reduced to a certain extent.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present application provides an automatic testing apparatus and system for vehicle-mounted devices, which can perform special repeated testing on the vehicle-mounted devices, greatly save labor and time costs, and improve testing efficiency.
In a first aspect, an embodiment of the present application provides an automatic testing apparatus for vehicle-mounted devices, including: the vehicle-mounted power supply control system comprises a controller provided with a plurality of paths of serial ports and bus interfaces, and a vehicle-mounted network bus circuit, a power supply control circuit, an input control circuit and an output indication circuit which are respectively connected with the controller through the serial ports or the bus interfaces;
the vehicle-mounted network bus circuit is used for connecting the tested vehicle-mounted equipment;
the power supply control circuit is used for connecting a power supply of the tested vehicle-mounted equipment;
the input control circuit is used for receiving a test instruction input by a user;
the controller is used for correspondingly testing the bus network or the power supply circuit of the tested vehicle-mounted equipment through the vehicle-mounted network bus circuit or the power supply control circuit;
the output indicating circuit is used for indicating the state of the tested vehicle-mounted equipment when the response is abnormal.
In some embodiments, the on-board network bus circuit includes at least one of a high-speed CAN bus unit, a low-speed CAN bus unit, a single-wire CAN bus unit, a fault-tolerant CAN bus unit, a LIN bus unit, and an internal device bus unit.
In some embodiments, the on-board network bus circuit comprises at least two of the high-speed CAN bus unit, the low-speed CAN bus unit, the single-wire CAN bus unit, and the fault-tolerant CAN bus unit, and the controller comprises two CAN bus interfaces for connecting the CAN bus units.
In some embodiments, the vehicle-mounted network bus circuit further includes the LIN bus unit, the controller includes three paths of serial ports, a first path of serial port is connected to the LIN bus unit, a second path of serial port is connected to an upper computer for human-computer interaction, and a third path of serial port is used for testing fault printing.
In some embodiments, the power control circuit includes a switching regulator unit, a voltage detector unit and a current detector unit, the switching regulator unit is respectively connected to the voltage detector unit and the current detector unit, and the switching regulator unit is used for connecting to the power output end of the vehicle-mounted device under test;
the controller is used for acquiring the test voltage set by a user through the input control circuit, and regulating the power supply output voltage of the tested vehicle-mounted equipment through the switch voltage stabilizing unit according to the test voltage so as to perform voltage variation simulation test;
the current detection unit and the voltage detection unit are respectively used for sampling the current and the voltage output by the power supply of the detected vehicle-mounted equipment and sending the current and the voltage to the controller.
In some embodiments, the input control circuit comprises a matrix keyboard or a key unit consisting of a plurality of independent keys, wherein different keys are configured as different test instructions.
In some embodiments, further comprising: one or more combinations of a hard-wire ignition control circuit, a reversing control circuit and a starting pulse control circuit;
the controller is also used for controlling the hard-wire ignition control circuit, the reversing control circuit or the starting pulse control circuit corresponding to the key function to automatically test when the key is detected to be pressed.
In some embodiments, the key unit or the matrix keyboard further comprises a delete function key, and the controller is configured to control to exit a test operation currently being performed when the delete function key is detected to be pressed.
In some embodiments, the output indication circuit comprises a data display and at least one of a sound indication unit and a light indication unit;
the data display is used for displaying the test data sent by the controller;
the sound indicating unit and/or the light indicating unit are respectively used for indicating the abnormal state of the tested vehicle-mounted equipment in the test response through sound and/or light according to the indicating signal of the controller when the controller detects that the test is abnormal.
In a second aspect, an embodiment of the present application further provides an automated testing system for vehicle-mounted devices, including: the automatic testing device comprises an upper computer and the automatic testing device, wherein the upper computer is connected with the automatic testing device through a serial port, and the automatic testing device is used for connecting the tested vehicle-mounted equipment and carrying out automatic testing on the tested vehicle-mounted equipment.
The embodiment of the application has the following beneficial effects:
the automatic testing device of the vehicle-mounted equipment comprises a controller and other circuits, wherein the controller is provided with a plurality of serial ports and bus interfaces and is respectively connected with a vehicle-mounted network bus circuit, a power supply control circuit, an input control circuit and an output indicating circuit through the serial ports or the bus interfaces; the vehicle-mounted network bus circuit is used for connecting the tested vehicle-mounted equipment; the power supply control circuit is used for connecting a power supply of the tested vehicle-mounted equipment; the input control circuit is used for receiving a test instruction input by a user; after receiving the test instruction, the controller can be used for testing the bus network or the power supply circuit of the tested vehicle-mounted equipment through the vehicle-mounted network bus circuit or the power supply control circuit; the output indicating circuit is used for indicating the state of the tested vehicle-mounted equipment when the equipment responds to the abnormity. The automatic testing device can realize repeated reliability testing of the vehicle-mounted equipment for many times, and in addition, various special tests of the vehicle-mounted equipment can be carried out due to the fact that the automatic testing device supports a communication bus and a serial port which are commonly used by a vehicle-mounted network, so that manpower testing, time cost and the like are greatly reduced.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic application diagram of an automatic testing device of an on-board device according to an embodiment of the present application;
FIG. 2 is a first schematic structural diagram of an automatic testing device for vehicle-mounted equipment according to an embodiment of the application;
fig. 3A to 3C respectively show a schematic structural diagram of a high-speed CAN, a single-wire CAN, and a LIN bus in an automatic test device of an in-vehicle apparatus according to an embodiment of the present application;
FIG. 4 is a second schematic structural diagram of an automatic testing device of an on-board device according to an embodiment of the present application;
fig. 5 is a circuit diagram showing an ACC ignition control circuit in the automatic test apparatus of the in-vehicle device of the embodiment of the present application;
fig. 6 is a circuit diagram showing a reverse control circuit in an automatic test device of an in-vehicle apparatus according to an embodiment of the present application;
fig. 7 shows a schematic configuration diagram of a power supply control circuit in an automatic test device of an in-vehicle apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present application, are intended to indicate only specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present application belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments.
Fig. 1 is a schematic application diagram of an automatic testing apparatus 100 for vehicle-mounted devices according to an embodiment of the present application. Exemplarily, a tester may connect the automatic testing apparatus 100 to an upper computer through a serial port and connect the automatic testing apparatus to a vehicle-mounted device under test (also referred to as DUT) through a bus interface to form a vehicle-mounted automatic testing system. The automatic testing device 100 can replace testers to manually carry out special tests such as manual simulation based on vehicle-mounted bus communication, power supply voltage variation and the like on vehicle-mounted equipment, so that the manual cost can be greatly saved, and the reliability of the test can be improved.
Fig. 2 is a schematic structural diagram of an automatic testing apparatus 100 for vehicle-mounted devices according to an embodiment of the present disclosure. In this embodiment, the automatic test apparatus 100 includes a controller 110, and an in-vehicle network bus circuit 120, a power supply control circuit 130, an input control circuit 140, and an output instruction circuit 150, which are connected to the controller 110. The vehicle-mounted network bus circuit 120 is used for connecting a bus of the tested vehicle-mounted device; the power supply control circuit 130 is used for connecting a power supply of the tested vehicle-mounted equipment; the input control circuit 140 is used for receiving a test instruction input by a user; the controller 110 may be configured to perform a test on a bus network or a power circuit of the vehicle-mounted device to be tested through the vehicle-mounted network bus circuit 120 or the power control circuit 130 when receiving the test instruction; the output instruction circuit 150 can be used to instruct the abnormal state of the vehicle-mounted device under test when responding to an abnormality.
The controller 110 is a core device of the testing apparatus, and is provided with hardware resources such as at least two serial ports and at least one bus interface, for example, the hardware resources can be implemented by using an ARM series chip. Specifically, one of the serial ports of the controller 110 is used for connecting an upper computer, such as a computer, and performing related input and programming of an early-stage test mode; and the other path of serial port is used for testing fault (DEBUG) printing, and can output the real-time state of the tested vehicle-mounted equipment in real time. Optionally, when the in-vehicle network bus circuit 120 includes a LIN bus, the controller 110 may further include a serial port for connecting to a LIN bus network. At least one bus interface of the controller 110 may be used to connect the vehicle network bus circuit 120 for performing bus link communication with the vehicle-mounted device, so as to implement automatic testing of the vehicle-mounted device.
The vehicle-mounted network bus circuit 120 is mainly used for connecting communication buses such as a CAN bus and a LIN bus supported by the vehicle-mounted device to be tested, so that the communication and control of the vehicle-mounted system to be tested CAN be realized by simulating the original vehicle CAN network environment. In one embodiment, the on-board network bus circuit 120 may include, but is not limited to, at least one bus structure including a high-speed CAN bus unit, a low-speed CAN bus unit, a single-wire CAN bus unit, a fault-tolerant CAN bus unit, a SCAN bus unit, a LIN bus unit, an internal device bus (i.e., IEBUS) unit, and the like.
It CAN be understood that when a plurality of bus units are provided, the automatic testing device 100 CAN support different models of the CAN bus compatibly, so that the applicable scenes of the testing device are enlarged. For example, an actually designed automatic test apparatus 100 is provided with six types of bus units compatible with high-speed CAN, fault-tolerant CAN, single-wire CAN, SACN, IEBUS and LIN link communication of different vehicle-mounted devices, where fig. 3A to 3C sequentially show one circuit configuration of the high-speed CAN bus unit, the single-wire CAN bus unit and the LIN bus unit, and it is understood that these circuit configurations are only one possible example. Correspondingly, the controller 110 includes two CAN bus interfaces for connecting the above CAN bus units. Specifically, when it is detected that the vehicle-mounted device under test is accessed, the controller 110 selects a bus unit supported by the vehicle-mounted device under test from the multiple bus units to connect to the vehicle-mounted device under test, so that the automatic test apparatus 100 and the vehicle-mounted device under test communicate with each other through the corresponding CAN bus.
Taking a CAN network supported by the vehicle-mounted device as an example, the vehicle-mounted network bus circuit 120 of the automatic testing device 100 includes a corresponding CAN bus unit, and when the automatic testing device is connected to the vehicle-mounted device, the upper computer or the automatic testing device 100 which is preset with a testing program stored therein CAN perform full-course digital automatic testing through the CAN bus and obtain the state of the vehicle-mounted device to be tested in real time; meanwhile, the automatic testing device 100 can also perform serial printing record with a connected PC in real time. If the response of the vehicle-mounted equipment is abnormal, the abnormal response is timely fed back to a tester through the output indicating circuit 150 (such as a buzzer, an LED and the like).
In this embodiment, the input control circuit 140 is configured to receive a test instruction, such as a start test instruction, an end test instruction, a test type selection or configuration, and the like. In one embodiment, the input control circuit 140 may include a matrix keyboard, and of course, the input control circuit 140 may also include other structures that can be used for signal input, and the matrix keyboard may be replaced by a key unit composed of a plurality of independent keys, which is not limited herein. As an alternative, each of the above keys may also be configured as different test instructions, and may implement a one-key test function, etc.
As an optional solution, the automatic testing apparatus 100 further includes: one or more of a hard wire (ACC) ignition control circuit, a reverse control circuit, a start pulse control circuit, air conditioning control, vehicle lamp control (i.e., ILL operation), and the like. For example, fig. 5 and 6 are an ACC ignition control circuit and a reverse control circuit, respectively. It is to be understood that the circuit herein is merely an example. Further, the various keys may be configured to be shortcut operations of the several special operations. Exemplarily, when it is detected that a key is pressed, the controller 110 sends a reverse control circuit, a hard-wired ignition control circuit, an air-conditioning control circuit or a vehicle lamp control circuit, etc. corresponding to the currently pressed key function to the tested vehicle-mounted device through the matched vehicle-mounted network bus to perform a simulation operation test.
Optionally, the key unit or the matrix keyboard further includes a delete function key, i.e. one of the keys is set to end the current test operation. Specifically, the controller 110 controls to exit the currently executed test operation when detecting that the delete function key is pressed. Alternatively, the tester may reenter the flow of selecting the test type, and so on.
In this embodiment, the output indicating circuit 150 is mainly used for visually displaying the test result in real time. For example, the output indication circuit 150 may include, but is not limited to, at least one of a sound indication unit and a light indication unit, a data display, and the like. It will be appreciated that the data display is used to display the test data sent by the controller 110. The sound indicating unit and/or the light indicating unit are respectively used for indicating the abnormal state of the tested vehicle-mounted equipment in the test response by sound and/or light according to the indicating signal sent by the controller 110 when the controller 110 detects that the test is abnormal. For example, the sound indicating unit may be a buzzer, a horn, or the like; the light indication unit may be a Light Emitting Diode (LED) or the like; the data display can be a digital tube, an LCD display screen or a liquid crystal display screen, etc. For example, the automated test equipment 100 may employ a four-bit nixie tube for displaying data such as current, voltage, etc.
It should be noted that, in addition to the on-board bus network and the special test based on the bus network, the automatic test apparatus 100 of the present embodiment can also test the power supply of the on-board device under test, such as the voltage variation test, through the power supply control circuit 130.
In one embodiment, the power control circuit 130 includes a switching regulator unit, a voltage detection unit and a current detection unit, the switching regulator unit is respectively connected to the voltage detection unit and the current detection unit, and the switching regulator unit is configured to be connected to a power output terminal of the vehicle-mounted device under test. For example, fig. 7 shows a circuit schematic of a switching regulator block. The controller 110 is configured to obtain a test voltage set by a user through the input control circuit 140, and adjust the power output voltage of the vehicle-mounted device to be tested through the switching regulator unit according to the obtained test voltage, so as to implement a voltage variation simulation test and the like. The current detection unit and the voltage detection unit are respectively used for sampling the current and the voltage output by the power supply of the detected vehicle-mounted device and sending the current and the voltage to the controller 110, so that the controller 110 compares the sampled current or voltage with a preset threshold value to judge whether the power supply output of the device is abnormal or not.
Taking the voltage variation simulation test as an example, the test current may be set to 5A, the voltage adjustment range is controlled to be 1V-15V, and during the test, the lowest test voltage may be selected to start, and an integer is input from the keyboard, for example, 1 is input when 1V is selected, 2 is input when 2V is selected, and so on. Then pressing the OK function key, then pressing a specific key (e.g., 9999), and then pressing the OK function key, the automated test equipment 100 will start the test of voltage variation. Normally, the time for turning on the vehicle-mounted device is 40 seconds, if it is detected that 40 seconds still do not reach the preset normal current, the vehicle-mounted device waits for a period of time (such as 20 seconds) again, and if not detected all the time, the test is stopped. Normally, the time for powering off the vehicle-mounted device is normally 20 seconds, if the sleep current cannot be reached after 20 seconds, the time is delayed for 20 seconds, and if the sleep current is not detected, the test is stopped. At this time, the output instruction circuit 150 can display the corresponding abnormal state.
The automatic testing device 100 of the embodiment of the application applies corresponding special control to the vehicle-mounted equipment through vehicle-mounted summary such as a CAN network and a LIN bus or a test harness simulation original vehicle, obtains a corresponding test result, and prints and outputs the test result to the upper computer through a serial port for anomaly analysis, so that whether the vehicle-mounted equipment is abnormal or not and the reason of the abnormality CAN be judged. This automatic change testing arrangement 100 CAN replace the tester to carry out special environmental test such as artifical boring and tasteless CAN communication protocol, analog power source, automobile body operation, has not only improved efficiency of software testing and reliability, has still reduced artifical long time of participating in the on-board unit test, greatly reduced manpower test and time cost etc..
Based on the automatic testing apparatus 100 of the above embodiment, the present embodiment provides an automatic testing system of a vehicle-mounted device, exemplarily, the automatic testing system includes: host computer and the automatic testing arrangement 100 of above-mentioned embodiment, wherein, the host computer passes through serial ports connection automatic testing arrangement 100, and automatic testing arrangement 100 is used for connecting the on-vehicle equipment under test to carry out automated test to this on-vehicle equipment under test.
It is to be understood that the alternatives of the automated testing device 100 in the above embodiments are equally applicable to this embodiment, and therefore will not be described again.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (10)
1. An automatic testing device of vehicle-mounted equipment is characterized by comprising: the system comprises a controller, and a vehicle-mounted network bus circuit, a power supply control circuit, an input control circuit and an output indication circuit which are respectively connected with the controller; the controller is provided with at least two paths of serial ports and at least one path of bus interface, wherein one path of serial port is used for connecting an upper computer, one path of serial port is used for testing fault printing, and the at least one path of bus interface is used for connecting the vehicle-mounted network bus circuit;
the vehicle-mounted network bus circuit is used for connecting a bus of the tested vehicle-mounted equipment;
the power supply control circuit is used for connecting a power supply of the tested vehicle-mounted equipment;
the input control circuit is used for receiving a test instruction input by a user;
the controller is used for correspondingly testing the bus network or the power supply circuit of the tested vehicle-mounted equipment through the vehicle-mounted network bus circuit or the power supply control circuit;
the output indicating circuit is used for indicating the state of the tested vehicle-mounted equipment when the response is abnormal.
2. The automated testing apparatus of claim 1, wherein the on-board network bus circuit comprises at least one of a high-speed CAN bus unit, a low-speed CAN bus unit, a single-wire CAN bus unit, a fault-tolerant CAN bus unit, a LIN bus unit, and an internal device bus unit.
3. The automated testing apparatus of claim 2, wherein said on-board network bus circuit comprises at least two of said high-speed CAN bus unit, said low-speed CAN bus unit, said single-wire CAN bus unit, and said fault-tolerant CAN bus unit, said controller comprising two-way CAN bus interfaces for connecting each of said CAN bus units.
4. The automated testing device of claim 3, wherein the on-board network bus circuit comprises the LIN bus unit, the controller comprises three paths of serial ports, and the remaining serial ports of the three paths of serial ports are connected to the LIN bus unit.
5. The automatic test device according to claim 1, wherein the power control circuit comprises a switch voltage stabilization unit, a voltage detection unit and a current detection unit, the switch voltage stabilization unit is respectively connected with the voltage detection unit and the current detection unit, and the switch voltage stabilization unit is used for connecting with a power output end of the tested vehicle-mounted equipment;
the controller is used for acquiring the test voltage set by a user through the input control circuit, and regulating the power supply output voltage of the tested vehicle-mounted equipment through the switch voltage stabilizing unit according to the test voltage so as to perform voltage variation simulation test;
the current detection unit and the voltage detection unit are respectively used for sampling the current and the voltage output by the power supply of the detected vehicle-mounted equipment and sending the current and the voltage to the controller.
6. The automated testing apparatus of claim 1, wherein the input control circuitry comprises a matrix keyboard or a key unit comprised of a plurality of individual keys, wherein different keys are configured for different test instructions.
7. The automated testing apparatus of claim 6, further comprising: one or more combinations of a hard-wire ignition control circuit, a reversing control circuit and a starting pulse control circuit;
the controller is also used for controlling the hard-wire ignition control circuit, the reversing control circuit or the starting pulse control circuit corresponding to the key function to automatically test when the key is detected to be pressed.
8. The automated testing device of claim 6, wherein the key unit or the matrix keyboard further comprises a delete function key, and the controller is configured to control to exit a currently executing test operation upon detecting that the delete function key is pressed.
9. The automated testing apparatus of any of claims 1 to 8, wherein the output indication circuit comprises a data display and at least one of a sound indication unit and a light indication unit;
the data display is used for displaying the test data sent by the controller;
the sound indicating unit and/or the light indicating unit are respectively used for indicating the abnormal state of the tested vehicle-mounted equipment in the test response through sound and/or light according to the indicating signal of the controller when the controller detects that the test is abnormal.
10. An automated test system for in-vehicle equipment, comprising: the automatic testing device comprises an upper computer and the automatic testing device as claimed in any one of claims 1 to 9, wherein the upper computer is connected with the automatic testing device through a serial port, and the automatic testing device is used for connecting a tested vehicle-mounted device and carrying out automatic testing on the tested vehicle-mounted device.
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| CN202220552168.3U CN216927595U (en) | 2022-03-14 | 2022-03-14 | Automatic testing device and system of vehicle-mounted equipment |
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| CN202220552168.3U CN216927595U (en) | 2022-03-14 | 2022-03-14 | Automatic testing device and system of vehicle-mounted equipment |
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