CN116795071A - Test system and method for vehicle body controller - Google Patents
Test system and method for vehicle body controller Download PDFInfo
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- CN116795071A CN116795071A CN202210249470.6A CN202210249470A CN116795071A CN 116795071 A CN116795071 A CN 116795071A CN 202210249470 A CN202210249470 A CN 202210249470A CN 116795071 A CN116795071 A CN 116795071A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The disclosure relates to a system and a method for testing a vehicle body controller, which are used for reducing the test time and the test cost of a hardware circuit of the vehicle body controller. The system comprises: the upper computer and the level conversion unit; the upper computer is connected with the control end of the output circuit of the vehicle body controller and is used for sending a control instruction to the vehicle body controller so that the output circuit outputs a first electric signal from the output end of the output circuit; the input end of the level conversion unit is connected with the output end of the output circuit, the output end of the level conversion unit is connected with the input end of the input circuit of the vehicle body controller, and the level conversion unit is used for converting the first electric signal into the second electric signal and outputting the second electric signal from the output end of the level conversion unit; the upper computer is connected with the signal acquisition end of the input circuit and is used for acquiring a second electric signal and comparing the second electric signal with an expected result corresponding to the control instruction to obtain a test result.
Description
Technical Field
The disclosure relates to the technical field of automobile electronics, in particular to a system and a method for testing a vehicle body controller.
Background
The automobile body controller is also called an automobile body computer, refers to an electronic control unit for controlling an automobile body electrical system in automobile engineering, and is one of important components of an automobile. Common functions of a vehicle body controller include controlling power windows, power mirrors, air conditioners, headlamps, turn lamps, anti-theft lock systems, center locks, defrosters, etc., and therefore, a hardware circuit of the vehicle body controller generally includes a plurality of input circuits and output circuits.
At present, after hardware of a vehicle body controller is designed according to functional requirements, whether a hardware circuit is reliable or not can be known through testing. In the related art, the test for hardware is mostly realized by depending on software, but the software development is not only long and high in cost, so that the test time and the test cost of the hardware circuit are increased.
Disclosure of Invention
The invention aims to provide a test system and a test method for a vehicle body controller, which are used for solving the technical problems that the hardware circuit test of the vehicle body controller in the related art depends on software test to increase the test duration and the test cost.
To achieve the above object, a first aspect of the present disclosure provides a test system for a vehicle body controller, the system comprising:
the upper computer and the level conversion unit;
the upper computer is connected with the control end of the output circuit of the vehicle body controller and is used for sending a control instruction to the vehicle body controller so that the output circuit outputs a first electric signal from the output end of the output circuit;
the input end of the level conversion unit is connected with the output end of the output circuit, the output end of the level conversion unit is connected with the input end of the input circuit of the vehicle body controller, and the level conversion unit is used for converting the first electric signal into a second electric signal and outputting the second electric signal from the output end of the level conversion unit;
the upper computer is connected with the signal acquisition end of the input circuit and is used for acquiring the second electric signal and comparing the second electric signal with an expected result corresponding to the control instruction to obtain a test result.
Optionally, the plurality of level conversion units are one-to-one corresponding to the plurality of output circuits of the vehicle body controller, and one of the level conversion units is connected with one or more input circuits of the vehicle body controller.
Optionally, the level conversion unit includes a high level to high level circuit;
the input end of the high-level-to-high-level circuit is connected with the output end of the high-side driving output circuit of the vehicle body controller, the output end of the high-level-to-high-level circuit is connected with the input end of the high-efficiency input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first high level signal, and the second level signal comprises a second high level signal converted by the high-level-to-high-level circuit.
Optionally, the level conversion unit includes a high level to low level circuit;
the input end of the high-level-to-low-level circuit is connected with the output end of the high-side driving output circuit of the vehicle body controller, the output end of the high-level-to-low-level circuit is connected with the input end of the low-effective input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first high level signal, and the second level signal comprises a first low level signal converted by the high-level-to-low-level circuit.
Optionally, the level conversion unit includes a low level to low level circuit;
the input end of the low level-to-low level circuit is connected with the output end of the low side driving output circuit of the vehicle body controller, the output end of the low level-to-low level circuit is connected with the input end of the low effective input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first low level signal, and the second level signal comprises a second low level signal converted by the low level-to-low level circuit.
Optionally, each of the level shifting units comprises an optocoupler.
A second aspect of the present disclosure also provides a method for testing a vehicle body controller, applied to the system described in the first aspect, the method including:
the upper computer sends a control instruction to the vehicle body controller so that an output circuit of the vehicle body controller outputs the first electric signal;
the upper computer collects the second electric signals received by the input circuit of the vehicle body controller, and compares the second electric signals with expected results corresponding to the control instructions to obtain test results.
Optionally, the number of the level conversion units is multiple, the multiple level conversion units are in one-to-one correspondence with the multiple output circuits in the vehicle body controller, and one level conversion unit is connected with one or more input circuits of the vehicle body controller;
the host computer sends a control instruction to the vehicle body controller so that an output circuit of the vehicle body controller outputs the first electric signal, and the method comprises the following steps:
the upper computer sequentially sends corresponding control instructions to each output circuit in a first output circuit group aiming at the first output circuit group, wherein the first output circuit group comprises output circuits which are connected to the same input circuit in the vehicle body controller through the level conversion unit in the plurality of output circuits, so that the same input circuit sequentially receives second electric signals corresponding to the control instructions;
the upper computer collects the second electric signal received by the input circuit of the vehicle body controller, compares the second electric signal with an expected result corresponding to the control instruction, and obtains a test result, and the method comprises the following steps:
and sequentially acquiring second electric signals received by the same input circuit, and sequentially comparing the acquired second electric signals with the expected results of the corresponding control instructions to obtain the test results of the plurality of output circuits aiming at the corresponding input circuits.
Optionally, the number of the level conversion units is multiple, the level conversion units are in one-to-one correspondence with the output circuits in the vehicle body controller, and one level conversion unit is connected with one or more input circuits of the vehicle body controller;
the host computer sends a control instruction to the vehicle body controller so that an output circuit of the vehicle body controller outputs the first electric signal, and the method comprises the following steps:
the upper computer sends corresponding control instructions to each output circuit in the second output circuit group in parallel aiming at the second output circuit group, wherein the second output circuit group comprises output circuits which are connected to different input circuits in the vehicle body controller through the level conversion unit in the plurality of output circuits.
Optionally, the input end of the level conversion unit is connected with the output end of one output circuit of the vehicle body controller, and the output end of the level conversion unit is connected with a plurality of input circuits of the vehicle body controller, so that the plurality of input circuits can all receive a second electric signal corresponding to the control instruction received by the output circuit;
the upper computer collects the second electric signal received by the input circuit of the vehicle body controller, compares the second electric signal with an expected result corresponding to the control instruction, and obtains a test result, and the method comprises the following steps:
respectively collecting second electric signals received by the plurality of input circuits, and comparing the second electric signals received by each input circuit with the expected results of the corresponding control instructions to obtain a plurality of test results;
under the condition that the plurality of test results are all normal results, determining that the output circuit and the plurality of input circuits are normal;
and under the condition that partial abnormal results exist in the plurality of test results, determining that the input circuit corresponding to the partial abnormal results is abnormal.
Through the technical scheme, at least the following technical effects can be achieved:
the test system of the vehicle body controller comprises an upper computer and a level conversion unit, wherein the upper computer is connected with a control end of the output circuit of the vehicle body controller and is used for sending a control instruction to the vehicle body controller so that the output circuit outputs a first electric signal from an output end of the output circuit, the input end of the level conversion unit is connected with an output end of the output circuit, the output end of the level conversion unit is connected with an input end of the input circuit of the vehicle body controller, the level conversion unit is used for converting the first electric signal into a second electric signal and outputting a second electric signal from an output end of the level conversion unit, and the upper computer is connected with a signal acquisition end of the input circuit and is used for acquiring the second electric signal and comparing the second electric signal with an expected result corresponding to the control instruction to obtain a test result. According to the system, the input circuit of the vehicle body controller is detected by the level conversion unit, and the hardware circuit is not required to be tested by depending on software, so that the test time and the test cost of the hardware circuit of the vehicle body controller are reduced.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a block diagram of a test system for a vehicle body controller provided by an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a high-to-high circuit provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a high-to-low circuit provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a low-to-low circuit provided by an embodiment of the present disclosure;
fig. 5 is a flow chart of a test method of a vehicle body controller according to an embodiment of the disclosure;
fig. 6 is a schematic diagram of a connection relationship between a level shifter unit and an output circuit and between a level shifter unit and an input circuit according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of a connection relationship of a first output circuit set according to an embodiment of the disclosure;
FIG. 8 is a schematic diagram of a connection relationship of a second output circuit set according to an embodiment of the disclosure;
fig. 9 is a schematic diagram of connection relation between another level shifter unit and an output circuit and an input circuit according to an embodiment of the present disclosure.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
It should be understood that the various steps recited in the method embodiments of the present disclosure may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this respect. The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments. Related definitions of other terms will be given in the description below.
It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units. It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.
Currently, in order to ensure that the vehicle body controller can ensure normal use of functions under various possible external environments, DV tests (Design Validation Test) are required for hardware circuits of the vehicle body controller, and mainly include environmental endurance tests, electromagnetic compatibility tests, and electrical characteristic tests. In the related art, performing the DV test requires covering all circuits of the vehicle body controller and relying on software to complete the test, and thus, it is necessary to perform the test after the development of the test software is completed, which is not only time-consuming but also increases the test cost.
Accordingly, the present disclosure provides a system and a method for testing a vehicle body controller to solve the above-mentioned problems.
The following describes the embodiments of the present disclosure in detail.
An embodiment of the present disclosure provides a test system for a vehicle body controller, as shown in fig. 1, the system 10 includes: a host computer 101 and a level conversion unit 102. The upper computer 101 is connected with a control end of an output circuit of the vehicle body controller and is used for sending a control instruction to the vehicle body controller so that the output circuit outputs a first electric signal from the output end of the output circuit, an input end of the level conversion unit 102 is connected with an output end of the output circuit, an output end of the level conversion unit 102 is connected with an input end of the input circuit of the vehicle body controller, the level conversion unit 102 is used for converting the first electric signal into a second electric signal and outputting the second electric signal from the output end of the level conversion unit 102, and the upper computer 101 is connected with a signal acquisition end of the input circuit and is used for acquiring the second electric signal and comparing the second electric signal with an expected result corresponding to the control instruction to obtain a test result.
The test system of the vehicle body controller comprising the upper computer and the level conversion unit is used for testing the input circuit and the output circuit of the vehicle body controller, wherein the upper computer is connected with the control end of the output circuit of the vehicle body controller and is used for sending a control instruction to the vehicle body controller so that the output circuit outputs a first electric signal from the output end of the output circuit, the input end of the level conversion unit is connected with the output end of the output circuit, the output end of the level conversion unit is connected with the input end of the input circuit of the vehicle body controller, the level conversion unit is used for converting the first electric signal into a second electric signal and outputting the second electric signal from the output end of the level conversion unit, and the upper computer is connected with the signal acquisition end of the input circuit and is used for acquiring the second electric signal and comparing the second electric signal with an expected result corresponding to the control instruction to obtain a test result. According to the system, the input circuit of the vehicle body controller is detected by the level conversion unit, and the hardware circuit is not required to be tested by depending on software, so that the test time and the test cost of the hardware circuit of the vehicle body controller are reduced.
In order to make those skilled in the art more aware of the test system for a vehicle body controller provided by the present disclosure, the following details will illustrate the above-mentioned parts.
In a possible manner, the level shift units are plural, and the plural level shift units are in one-to-one correspondence with the plural output circuits of the vehicle body controller, and one level shift unit is connected with one or more input circuits of the vehicle body controller.
Illustratively, the level shifting unit may include a high level to high level circuit as shown in fig. 2. The input end of the high-level-to-high-level circuit is connected with the output end of the high-side driving output circuit of the vehicle body controller, the output end of the high-level-to-high-level circuit is connected with the input end of the high-efficiency input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first high level signal, and the second level signal comprises a second high level signal converted by the high-level-to-high-level circuit.
The level shifting unit may also include a high-to-low circuit as shown in fig. 3, for example. The input end of the high-level-to-low-level circuit is connected with the output end of the high-side driving output circuit of the vehicle body controller, the output end of the high-level-to-low-level circuit is connected with the input end of the low-effective input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first high level signal, and the second level signal comprises a first low level signal converted by the high-level-to-low-level circuit.
The level shifting unit may also include a low-to-low circuit as shown in fig. 4, for example. The input end of the low level-to-low level circuit is connected with the output end of the low side driving output circuit of the vehicle body controller, the output end of the low level-to-low level circuit is connected with the input end of the low effective input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first low level signal, and the second level signal comprises a second low level signal converted by the low level-to-low level circuit.
The high-side driving output circuit of the vehicle body controller outputs a low level, and the low-side driving output circuit outputs a low level, wherein the high-side driving output circuit is more than the low-side driving output circuit. The high-efficiency input circuit of the vehicle body controller is effective when the input level is high level, the low-efficiency input circuit is effective when the input level is low level, and the analog input circuit is effective only when the input level meets the set analog level, wherein the low-efficiency input circuit is most. In addition, since the number of the output circuits is greater than that of the input circuits in the vehicle body controller, the condition that a plurality of output circuits are tested by using the same input circuit may exist, and in combination with the condition of the number of the input circuits and the output circuits of the vehicle body controller, a plurality of high-level to low-level circuits can be arranged in the level conversion unit so as to meet the requirement of testing a plurality of high-side driving output circuits by using a plurality of low-efficiency input circuits.
In a possible manner, for convenience of testing, the above-described plurality of level-shifting units may be integrated into one test box, and each level-shifting unit provides an interface to connect with the input circuit and the output circuit of the body controller. In addition, in order to avoid interference when a plurality of level shift units perform testing simultaneously, each level shift unit further includes an optical coupler as shown in fig. 2-4. The optocoupler has good isolation effect, and mutual interference during simultaneous testing of a plurality of level conversion units can be avoided by arranging the optocoupler in the conversion circuit, so that normal testing is ensured.
Based on the same inventive concept, the present disclosure also provides a method for testing a vehicle body controller, which is applied to the testing system of the vehicle body controller, and the method includes:
s501, the upper computer sends a control instruction to the vehicle body controller so that an output circuit of the vehicle body controller outputs the first electric signal.
S502, the upper computer collects the second electric signal received by the input circuit of the vehicle body controller, and compares the second electric signal with an expected result corresponding to the control instruction to obtain a test result.
By adopting the method, the upper computer sends the control instruction to the vehicle body controller so that the output circuit of the vehicle body controller outputs the first electric signal, then the upper computer collects the second electric signal received by the input circuit of the vehicle body controller, and the second electric signal is compared with the expected result corresponding to the control instruction to obtain the test result. According to the method, the input circuit of the vehicle body controller is utilized to detect the output circuit of the vehicle body controller, and the hardware circuit is not required to be tested by depending on software, so that the test time and the test cost of the hardware circuit of the vehicle body controller are reduced.
In order to make those skilled in the art more understand the method for testing a vehicle body controller provided in the present disclosure, the following details of each of the above steps are illustrated.
Because the testing method of the vehicle body controller provided by the embodiment of the disclosure is mainly aimed at DV testing of the hardware circuit, in a possible mode, the testing environment is set before the host computer sends the control instruction to the vehicle body controller. The setting parameters of the test environment comprise at least one of power supply voltage of the vehicle body controller, environment temperature, humidity and electromagnetic intensity of the vehicle body controller.
Specifically, after the test environment is set each time, all input circuits and output circuits of the vehicle body controller are tested to verify whether the hardware circuits of the vehicle body controller can be normally used under the current environment condition. The specific value of each setting parameter of the test environment may be designed according to the environmental parameter to be verified in the actual test process, for example, the environment temperature of the vehicle body controller is set to be-20 ℃, 0 ℃, 25 ℃ and 50 ℃ respectively, and the test is performed, which is not particularly limited in comparison of the disclosure.
In a possible manner, as shown in fig. 6, the level shift units are plural, and the plural level shift units are in one-to-one correspondence with plural output circuits in the vehicle body controller, and one level shift unit is connected with one or more input circuits of the vehicle body controller.
Alternatively, as shown in fig. 7, the output circuit 2, the output circuit 3, and the output circuit 4 in fig. 6 may be regarded as the first output circuit group. The upper computer sequentially sends corresponding control instructions to each output circuit in the first output circuit group aiming at the first output circuit group, wherein the first output circuit group comprises a plurality of output circuits, and the output circuits are connected to the same input circuit in the vehicle body controller through the level conversion unit, so that the same input circuit sequentially receives second electric signals corresponding to the control instructions. Further, the upper computer sequentially collects second electric signals received by the same input circuit, and sequentially compares the collected second electric signals with expected results of corresponding control instructions to obtain test results of the plurality of output circuits aiming at the corresponding input circuits.
Alternatively, as shown in fig. 8, the output circuit 1 and the output circuit 2 in fig. 6 may be regarded as the second output circuit group. The upper computer sends corresponding control instructions to each output circuit in the second output circuit group in parallel aiming at the second output circuit group, wherein the second output circuit group comprises a plurality of output circuits, and the output circuits are connected to different input circuits in the vehicle body controller through a level conversion unit.
That is, when a plurality of output circuits are connected to the same input circuit in the vehicle body controller through the level conversion unit, the simultaneous test is not allowed, and the input circuits are prevented from receiving the level signal at the same time to cause an abnormality. And when the plurality of output circuits are respectively connected to different input circuits in the vehicle body controller through the level conversion unit, the simultaneous test is allowed, in which case the simultaneous test does not cause interference to the test result.
And comparing the collected second electric signals with the expected results of the corresponding control instructions in turn to obtain test results, for example, when the second electric signals received by the high-efficiency input circuit are at a high level, the test results are normal, and otherwise, the test results are abnormal. When the test results are all normal, the plurality of output circuits and the connected input circuit can be determined to be normally used under the current test conditions, if the test results are partially abnormal, the output circuit corresponding to the partially abnormal results can be determined to be not normally used under the current test conditions, and if the test results are all abnormal, further verification is needed.
For example, the connected input circuit may be replaced, preferably, an input circuit whose test result is normal when another output circuit is tested in the current environment is selected, if the test result is normal after the connected input circuit is replaced, it may be determined that the input circuit before the replacement cannot be used normally in the current environment, and if the normal test result cannot be obtained after the input circuit is replaced, it may be determined that the tested output circuit cannot be used normally in the current environment.
Since the output circuits can be further verified by replacing the connected input circuits, on the contrary, a plurality of input circuits can be tested by one output circuit.
Therefore, in a possible manner, as shown in fig. 9, the input end of the level conversion unit is connected to the output end of one output circuit of the vehicle body controller, and the output end of the level conversion unit is connected to a plurality of input circuits of the vehicle body controller, so that the plurality of input circuits can each receive the second electric signal corresponding to the control command received by the output circuit.
Specifically, the upper computer respectively collects second electric signals received by the plurality of input circuits, and compares the second electric signals received by each input circuit with expected results of corresponding control instructions to obtain a plurality of test results. And determining that the output circuit and the input circuits are normal when the plurality of test results are normal, and determining that the input circuit corresponding to the partial abnormal result is abnormal when the partial abnormal result exists in the plurality of test results.
In addition, if the test results are abnormal, further verification is required, for example, the output circuit is replaced to perform the test again, and preferably, an output circuit whose test result is normal when other input circuits are tested in the current environment is selected. If the output circuit is replaced, under the condition that the plurality of test results are all normal results, the output circuit before replacement can be determined to be not normally used in the current test environment, and if the output circuit is replaced and the normal test result can not be obtained, the tested input circuit can be determined to be not normally used in the current environment.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A test system for a vehicle body controller, the system comprising:
the upper computer and the level conversion unit;
the upper computer is connected with the control end of the output circuit of the vehicle body controller and is used for sending a control instruction to the vehicle body controller so that the output circuit outputs a first electric signal from the output end of the output circuit;
the input end of the level conversion unit is connected with the output end of the output circuit, the output end of the level conversion unit is connected with the input end of the input circuit of the vehicle body controller, and the level conversion unit is used for converting the first electric signal into a second electric signal and outputting the second electric signal from the output end of the level conversion unit;
the upper computer is connected with the signal acquisition end of the input circuit and is used for acquiring the second electric signal and comparing the second electric signal with an expected result corresponding to the control instruction to obtain a test result.
2. The system of claim 1, wherein the level shifter units are plural, the plural level shifter units are in one-to-one correspondence with plural output circuits of the vehicle body controller, and one of the level shifter units is connected with one or more input circuits of the vehicle body controller.
3. The system of claim 2, wherein the level shifting unit comprises a high-to-high circuit;
the input end of the high-level-to-high-level circuit is connected with the output end of the high-side driving output circuit of the vehicle body controller, the output end of the high-level-to-high-level circuit is connected with the input end of the high-efficiency input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first high level signal, and the second level signal comprises a second high level signal converted by the high-level-to-high-level circuit.
4. The system of claim 2, wherein the level shifting unit comprises a high-to-low circuit;
the input end of the high-level-to-low-level circuit is connected with the output end of the high-side driving output circuit of the vehicle body controller, the output end of the high-level-to-low-level circuit is connected with the input end of the low-effective input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first high level signal, and the second level signal comprises a first low level signal converted by the high-level-to-low-level circuit.
5. The system of claim 2, wherein the level shifting unit comprises a low-to-low circuit;
the input end of the low level-to-low level circuit is connected with the output end of the low side driving output circuit of the vehicle body controller, the output end of the low level-to-low level circuit is connected with the input end of the low effective input circuit of the vehicle body controller or the input end of the analog input circuit of the vehicle body controller, the first level signal comprises a first low level signal, and the second level signal comprises a second low level signal converted by the low level-to-low level circuit.
6. The system of any of claims 2-5, wherein each of the level-shifting units comprises an optocoupler.
7. A method of testing a vehicle body controller, applied to the system of claim 1, the method comprising:
the upper computer sends a control instruction to the vehicle body controller so that an output circuit of the vehicle body controller outputs the first electric signal;
the upper computer collects the second electric signals received by the input circuit of the vehicle body controller, and compares the second electric signals with expected results corresponding to the control instructions to obtain test results.
8. The method of claim 7, wherein the level shift units are plural, the plural level shift units are in one-to-one correspondence with plural output circuits in the vehicle body controller, and one of the level shift units is connected with one or more input circuits of the vehicle body controller;
the host computer sends a control instruction to the vehicle body controller so that an output circuit of the vehicle body controller outputs the first electric signal, and the method comprises the following steps:
the upper computer sequentially sends corresponding control instructions to each output circuit in a first output circuit group aiming at the first output circuit group, wherein the first output circuit group comprises output circuits which are connected to the same input circuit in the vehicle body controller through the level conversion unit in the plurality of output circuits, so that the same input circuit sequentially receives second electric signals corresponding to the control instructions;
the upper computer collects the second electric signal received by the input circuit of the vehicle body controller, compares the second electric signal with an expected result corresponding to the control instruction, and obtains a test result, and the method comprises the following steps:
and sequentially acquiring second electric signals received by the same input circuit, and sequentially comparing the acquired second electric signals with the expected results of the corresponding control instructions to obtain the test results of the plurality of output circuits aiming at the corresponding input circuits.
9. The method of claim 7, wherein the level shift units are plural, the plural level shift units are in one-to-one correspondence with plural output circuits in the vehicle body controller, and one of the level shift units is connected with one or more input circuits of the vehicle body controller;
the host computer sends a control instruction to the vehicle body controller so that an output circuit of the vehicle body controller outputs the first electric signal, and the method comprises the following steps:
the upper computer sends corresponding control instructions to each output circuit in the second output circuit group in parallel aiming at the second output circuit group, wherein the second output circuit group comprises output circuits which are connected to different input circuits in the vehicle body controller through the level conversion unit in the plurality of output circuits.
10. The method according to claim 7, wherein an input terminal of the level shift unit is connected to an output terminal of one output circuit of the vehicle body controller, and an output terminal of the level shift unit is connected to a plurality of input circuits of the vehicle body controller, so that the plurality of input circuits can each receive a second electric signal corresponding to a control instruction received by the output circuit;
the upper computer collects the second electric signal received by the input circuit of the vehicle body controller, compares the second electric signal with an expected result corresponding to the control instruction, and obtains a test result, and the method comprises the following steps:
respectively collecting second electric signals received by the plurality of input circuits, and comparing the second electric signals received by each input circuit with the expected results of the corresponding control instructions to obtain a plurality of test results;
under the condition that the plurality of test results are all normal results, determining that the output circuit and the plurality of input circuits are normal;
and under the condition that partial abnormal results exist in the plurality of test results, determining that the input circuit corresponding to the partial abnormal results is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210249470.6A CN116795071A (en) | 2022-03-14 | 2022-03-14 | Test system and method for vehicle body controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210249470.6A CN116795071A (en) | 2022-03-14 | 2022-03-14 | Test system and method for vehicle body controller |
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| Publication Number | Publication Date |
|---|---|
| CN116795071A true CN116795071A (en) | 2023-09-22 |
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| CN202210249470.6A Pending CN116795071A (en) | 2022-03-14 | 2022-03-14 | Test system and method for vehicle body controller |
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| Country | Link |
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| CN (1) | CN116795071A (en) |
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