CN108594796B - Automatic test device and method for whole vehicle controller - Google Patents

The invention provides an automatic test device and method for a whole vehicle controller, wherein the automatic test device for the whole vehicle controller is used for connecting the whole vehicle controller for testing, and the automatic test device for the whole vehicle controller comprises a signal acquisition unit, a signal generation unit, a control unit and a parameter configuration unit, wherein the signal generation unit is used for generating a test signal under the control of the control unit and sending the test signal to the whole vehicle controller for testing; the signal acquisition unit is used for acquiring an output signal output by the whole vehicle controller in response to the test signal and sending the output signal to the control unit, and the control unit judges whether the whole vehicle controller has an operation fault or not according to the acquired output signal. The automatic testing device for the vehicle controller can realize an automatic testing function, is comprehensive and accurate in testing, greatly improves testing efficiency, improves testing reliability, avoids artificial factor influence, reduces manual operation, is adjustable in testing content and parameters, and provides support for production line visualization.

Automatic test device and method for whole vehicle controller

Technical Field

The invention relates to the technical field of automobile electronics, in particular to an automatic testing device and method for a whole automobile controller.

Background

For the traditional test of the whole vehicle controller, the traditional test instrument is still at the manual test level at present, adopts a singlechip as a control circuit, adopts LEDs as indicator lights, adopts various buttons as the form of switching value input, and testers need to test step by step in a manual mode according to various functions of a vehicle body control module, so that the test efficiency is low, the reliability is poor, and the product is difficult to trace. The problems of complicated testing procedures and difficult detection of partial characteristics generally exist; the data volume is large, and the manual processing is difficult; the manual detection efficiency is low, and the human factor risk is large.

Disclosure of Invention

In view of the above, an object of the embodiments of the present invention is to provide an automatic testing device and method for a vehicle controller, so as to solve the problems of complicated testing procedure, large data size, difficult manual processing, low manual detection efficiency, etc. existing in the existing testing device.

The technical scheme adopted by the invention is as follows:

the embodiment of the invention provides an automatic test device for a whole vehicle controller, which is used for connecting the whole vehicle controller for testing, and comprises a signal acquisition unit, a signal generation unit, a control unit and a parameter configuration unit, wherein the signal generation unit is electrically connected with the control unit, and is used for generating a test signal under the control of the control unit and sending the test signal to the whole vehicle controller for testing; the signal acquisition unit is connected with the whole vehicle controller and is also electrically connected with the control unit, and is used for acquiring an output signal output by the whole vehicle controller in response to the test signal and sending the acquired output signal to the control unit, the control unit judges whether the whole vehicle controller has an operation fault according to the acquired output signal, and the parameter configuration unit is electrically connected with the control unit and is used for configuring test parameters.

Further, the automatic test device of the whole vehicle controller comprises display equipment, wherein the display equipment is electrically connected with the control unit and used for displaying test information.

Further, the signal generating unit comprises a frequency and duty ratio signal output module, a switching value output module and an analog quantity output module, wherein the frequency and duty ratio signal output module is used for generating a test signal to detect a frequency input or output circuit of the whole vehicle controller, and the switching value output module and the analog quantity output module are electrically connected with the control unit and used for generating a switching signal and an analog quantity signal under the control of the control unit.

Further, the signal acquisition unit comprises an analog quantity/relay control voltage sampling module, a frequency and duty ratio acquisition module and a CAN bus, wherein the analog quantity/relay control voltage sampling module is electrically connected with the whole vehicle controller, the analog quantity/relay control voltage sampling module is further connected with the control unit and is used for sampling signals output by the whole vehicle controller and sending the sampled signals to the control unit, the CAN bus is connected with the whole vehicle controller, and the CAN bus is further used for detecting transmission of test signals.

Further, the control unit comprises a processor and a memory, wherein the processor is used for processing the test data to generate a test result and storing the test result to the memory.

Further, the control unit further comprises a data interface, the data interface is electrically connected with the processor, and the data interface is used for realizing data transmission between the automatic test device of the whole vehicle controller and external equipment.

Further, the control unit further comprises a communication module, wherein the communication module is electrically connected with the processor and is used for sending the test data under the control of the processor.

Further, the switching value output module comprises 12 paths of high-efficiency switches and 8 paths of low-efficiency switches, and the output voltage value comprises high level 12V and low level 0V.

Further, the analog quantity/relay control voltage sampling module comprises 16 paths of 12-bit AD conversion channels so as to detect the analog quantity and the relay control signal voltage conversion bit digital quantity.

The invention also provides an automatic test method of the whole vehicle controller, which comprises the following steps: configuring test parameters and test modes; connecting a whole vehicle controller to be tested for testing; testing the whole vehicle controller according to the configured test parameters and test modes to obtain an output signal of the tested whole vehicle controller; and judging whether the whole vehicle controller operates normally or not according to the output signal.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides an automatic test device and method for a whole vehicle controller, wherein the automatic test device for the whole vehicle controller is used for connecting the whole vehicle controller for testing, and the automatic test device for the whole vehicle controller comprises a signal acquisition unit, a signal generation unit, a control unit and a parameter configuration unit, wherein the signal generation unit is used for generating a test signal under the control of the control unit and sending the test signal to the whole vehicle controller for testing; the signal acquisition unit is used for acquiring an output signal output by the whole vehicle controller in response to the test signal and sending the output signal to the control unit, and the control unit judges whether the whole vehicle controller has an operation fault or not according to the acquired output signal. The automatic testing device for the vehicle controller can realize an automatic testing function, is comprehensive and accurate in testing, greatly improves testing efficiency, improves testing reliability, avoids artificial factor influence, reduces manual operation, is adjustable in testing content and parameters, and provides support for production line visualization.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic diagram of an automatic test device for a whole vehicle controller.

Fig. 2 shows a schematic diagram of a signal generating unit.

Fig. 3 shows a schematic diagram of a signal acquisition unit.

Fig. 4 shows a schematic diagram of a control unit.

Fig. 5 shows a flowchart of an automatic test method for a whole vehicle controller.

Icon: 100-an automatic test device of the whole vehicle controller; 110-a signal acquisition unit; 111-an analog/relay control voltage acquisition module; 112-frequency and duty cycle acquisition module; 113-CAN bus; a 120-signal generating unit; 121-frequency and duty cycle signal output module; 122-a switching value output module; 123-an analog quantity output module; 130-a control unit; 131-a processor; 132-a processor; 133-a communication module; 134-data interface; 140-a display device; 150-parameter configuration unit.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should also be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

For the traditional test of the whole vehicle controller, the traditional test instrument is still at the manual test level at present, adopts a singlechip as a control circuit, adopts LEDs as indicator lights, adopts various buttons as the form of switching value input, and testers need to test step by step in a manual mode according to various functions of a vehicle body control module, so that the test efficiency is low, the reliability is poor, and the product is difficult to trace. The problems of complicated testing procedures and difficult detection of partial characteristics generally exist; the data volume is large, and the manual processing is difficult; the manual detection efficiency is low, and the human factor risk is large.

First embodiment

The embodiment provides an automatic testing device for a whole vehicle controller, which is used for realizing the test of the whole vehicle controller rapidly and accurately.

Referring to fig. 1, the present embodiment provides an automatic test device for a vehicle controller, which is configured to connect the vehicle controller for testing, and detect whether the vehicle controller is in a vehicle according to a test signal output by the pre-configured signal by inputting the pre-configured signal to the vehicle controller, so as to determine an operation state of the vehicle controller.

The automatic test device of the vehicle controller comprises a signal acquisition unit, a signal generation unit, a control unit, display equipment and a parameter configuration unit, wherein the signal generation unit is electrically connected with the control unit and is used for generating a test signal under the control of the control unit and sending the test signal to the vehicle controller for testing; the signal acquisition unit is connected with the whole vehicle controller, is also electrically connected with the control unit, and is used for acquiring an output signal output by the whole vehicle controller in response to the test signal and sending the acquired output signal to the control unit, and the parameter configuration unit is electrically connected with the control unit and is used for configuring test parameters. The display device is electrically connected with the control unit and is used for displaying the test information.

Referring to fig. 2, the signal generating unit includes a frequency and duty ratio signal output module, a switching value output module and an analog value output module, where the frequency and duty ratio signal output module is used to generate a test signal to detect a frequency input or output circuit of the vehicle controller, and the switching value output module and the analog value output module are electrically connected to the control unit and are used to generate a switching signal and an analog value signal under the control of the control unit.

The switching value output module comprises 12 paths of high-efficiency switches and 8 paths of low-efficiency switches, and the output voltage value comprises high level 12V and low level 0V. The frequency and duty ratio signal output module is in short circuit with the signal frequency and duty ratio signal input module of the signal acquisition unit, and the frequency input or output circuit of the detected vehicle controller can be judged to be normal or not by comparing the signals output by the vehicle controller and the signals output by the frequency and duty ratio signal output module acquired by the signal acquisition unit.

The analog quantity output module comprises 8 paths of DA conversion chips and is used for generating 8 paths of analog quantity signals to be output to the whole vehicle controller, and whether an analog signal detection circuit of the whole vehicle controller to be detected is normal can be judged by comparing the analog quantity signals output by the analog quantity output module with signals output by the whole vehicle controller to be detected.

Referring to fig. 3, the signal acquisition unit includes an analog/relay control voltage sampling module, a frequency and duty cycle acquisition module, and a CAN bus, where the analog/relay control voltage sampling module is electrically connected with the vehicle controller, and the analog/relay control voltage sampling module is further connected with the control unit and is used for sampling signals output by the vehicle controller and sending the sampled signals to the control unit, and the CAN bus is connected with the vehicle controller and is further used for detecting transmission of test signals.

The analog quantity/relay control voltage sampling module comprises 16 paths of 12-bit AD conversion channels and is used for converting analog quantity and relay control signal voltage into digital quantity signals for detection. The CAN bus comprises two paths of CAN signal receiving channels, one path is used for detecting whether the signal generating unit has data transmission, and the other path is used for monitoring the output signal of the tested whole vehicle controller. Therefore, whether the whole vehicle controller operates normally or not can be judged by comparing the signals input to the whole vehicle controller with the signals output by the whole vehicle controller.

Referring to fig. 4, the control unit includes a processor and a memory, where the processor is configured to process test data to generate a test result and store the test result to the memory. The processor may be a single-chip microcomputer, a PC or other devices with the same or similar functions, and in this embodiment, the processor may be a single-chip microcomputer, for example, a MC9S12XET256 single-chip microcomputer. The MC9S12XET256 singlechip is used as a processor of the automatic test device of the whole vehicle controller, controls and executes the whole test process, comprises comparison and operation of test data, judges the fault state of the tested whole vehicle controller, and stores test information into a memory, for example, the memory can be an off-chip memory. The control unit also comprises a data interface and a communication module, wherein the data interface is electrically connected with the processor and is used for realizing data transmission between the automatic test device of the whole vehicle controller and external equipment. The communication module is electrically connected with the processor and is used for transmitting the test data under the control of the processor. The communication module can be a WiFi module, a ZigBee module, a 3G module, a 4G module or other wireless transmission modules meeting the conditions. In this embodiment, the communication module may be a 3G module, for example, a 3G module of the model of SIM6320C, CEM631, CEM600, WIDE M8800, FWP103, K3G, WM9881, etc. Wherein the peripheral devices include, but are not limited to, cell phones, computers, etc.

When the communication module is preferably a 3G module, the communication module may be a 3G module for selecting telecommunications, a 3G module for selecting communication, a 3G module for selecting mobile, or a 3G module for supporting at least two of telecommunications, mobile, and communication. It should be understood, however, that the above-listed types of communication modules are merely examples for facilitating understanding, and are not to be construed as limiting the invention.

The display device is a display and input interface of the automatic test device of the vehicle controller, and in this embodiment, the display device may be an LCD display with a touch input function. The parameter configuration unit may be integrated with the display device. The LCD display with touch input function CAN display the test progress and the test result (no fault or specific fault code and description information) of the automatic test interface, the manual debugging interface CAN carry out relay threshold voltage configuration (according to specific relay driving capability requirement), analog quantity detection range configuration (according to specific analog quantity precision requirement), frequency and duty ratio detection range configuration, CAN communication adjustment (receiving and transmitting content and overtime configuration), switching value detection configuration (corresponding switch is enabled to be capable of being detected according to requirements), CAN carry out adjustment aiming at different vehicle controller characteristics, and CAN carry out storage classification after adjustment is completed, so that the compatibility of the device is improved.

Second embodiment

The embodiment provides an automatic test method for a whole vehicle controller, which is applied to the automatic test device for the whole vehicle controller provided by the first embodiment of the invention and is used for quickly and efficiently testing the whole vehicle controller.

Referring to fig. 5, fig. 5 shows a flowchart of a method for testing a vehicle controller according to the present embodiment. The automatic test method of the whole vehicle controller comprises the steps S10 to S40:

Step S10: and configuring test parameters and test modes.

Firstly, setting test parameters and test modes through a parameter configuration unit, for example, configuring a relay threshold voltage according to the specific relay driving capability requirement; configuring an analog quantity detection range according to the specific analog quantity precision requirement; configuring frequency and duty cycle detection range according to a preset test mode and the like; CAN communication adjustment is carried out according to the transceiving content and the overtime configuration; and enabling corresponding switch detection to carry out switching value detection configuration according to the requirements.

Step S20: and connecting the whole vehicle controller to be tested for testing.

Step S30: and testing the whole vehicle controller according to the configured test parameters and test modes to obtain an output signal of the tested whole vehicle controller.

After the automatic test device of the whole vehicle controller is connected with the tested whole vehicle controller, testing the output voltage of the relay control signal of the tested controller and recording whether the relay continuous opening time of the tested controller is in a normal range or not in a test period. And (3) sequentially adjusting the switching value output module, for example, sequentially executing opening and closing operations on the 8 paths of high-efficiency switches and the 8 paths of low-efficiency switches, and detecting the output signal of the detected whole vehicle controller. And meanwhile, the analog output module is adjusted sequentially, for example, a test voltage of 1V-5V is set and output to the tested whole vehicle controller sequentially for the 8-path DA conversion chip according to a preset mode, and whether the output signal of the tested whole vehicle controller is normal or not is detected. Thus, no manual debugging is needed.

Step S40: and judging whether the whole vehicle controller operates normally or not according to the output signal.

The detected test signals are stored in a memory of the processor or in an external memory connected through a communication module or an external data interface. The processor judges the detected output signal of the controller of the whole vehicle to be tested, generally judges the output voltage of the control signal of the controller of the whole vehicle to be tested, and records whether the relay on time period in the test period is in the normal range or not; and comparing the frequency, the duty ratio, the voltage value and the data transmission time of the signal output by the tested whole vehicle controller with preset values or ranges, and judging that the tested whole vehicle controller has faults when the signal does not accord with the expectations. The processor sends the fault information to the LCD display with touch input function for display, for example, fault codes are displayed. And if no fault is judged, the test is completed, and the tested whole vehicle controller has no fault.

In summary, the invention provides an automatic test device and method for a whole vehicle controller, wherein the automatic test device for the whole vehicle controller is used for connecting the whole vehicle controller for testing, the automatic test device for the whole vehicle controller comprises a signal acquisition unit, a signal generation unit, a control unit and a parameter configuration unit, the signal generation unit is electrically connected with the control unit, and the signal generation unit is used for generating a test signal under the control of the control unit and sending the test signal to the whole vehicle controller for testing; the signal acquisition unit is connected with the whole vehicle controller, is also electrically connected with the control unit, and is used for acquiring an output signal output by the whole vehicle controller in response to the test signal and sending the acquired output signal to the control unit, and the parameter configuration unit is electrically connected with the control unit and is used for configuring test parameters. The automatic testing device for the whole vehicle controller can realize an automatic testing function, is comprehensive and accurate in testing, greatly improves testing efficiency, improves testing reliability, avoids influence of human factors, is friendly in human-computer interface profile, reduces manual operation, is mainly used for improving testing efficiency and reliability of the whole vehicle controller, is adjustable in testing content and parameters, can store testing data, is beneficial to tracing and counting other testing products, is rich in interface, can monitor testing states in real time, and provides support for product line visualization.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.