CN110568835A - No-load test method and device for automobile electric control system - Google Patents
No-load test method and device for automobile electric control system Download PDFInfo
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- CN110568835A CN110568835A CN201910694748.9A CN201910694748A CN110568835A CN 110568835 A CN110568835 A CN 110568835A CN 201910694748 A CN201910694748 A CN 201910694748A CN 110568835 A CN110568835 A CN 110568835A
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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 invention discloses a no-load test method and a device for an automobile electric control system, wherein the automobile electric control system is connected with a high-voltage power supply through a high-voltage wire harness and is connected with a low-voltage power supply through a low-voltage wire harness, the automobile electric control system is connected with an upper computer through a PCAN interface card, the automobile electric control system is also connected with a motor, and the method is applied to the upper computer and comprises the following steps: receiving an input test instruction, and sending the test instruction to an automobile electric control system so that the automobile electric control system executes a product test program; receiving and displaying test parameters obtained by the automobile electric control system executing a product test program; comparing the test parameters with standard parameters, wherein the test parameters comprise an actually-measured rotating speed, an IGBT temperature, a motor temperature and a bus voltage; when the test parameters are inconsistent with the standard parameters, acquiring fault contents corresponding to the inconsistent parameters; and displaying the fault content. The method can reduce the test complexity.
Description
Technical Field
the invention relates to a no-load test method and a no-load test device for an automobile electric control system, and belongs to the technical field of automobile control.
Background
In recent years, with the rapid increase of automobile reserves, the transitional dependence on petroleum resources severely restricts the development of economy in China, even influences the national benefits, and simultaneously the problem of air pollution caused by automobile exhaust emission is becoming more serious. The method advocates and encourages the research and development of the new energy electric automobile with environmental protection and energy saving, represents the development direction of the automobile industry in the world, and also conforms to the national situation of China. The electric automobile has the characteristics of no pollution, cleanness, high efficiency and the like, is listed as a great special item of the national high and new technology development plan, and promotes the research and development of the electric automobile and the progress of the key technology thereof. The electric control system of the electric automobile is one of key technologies of the electric automobile, and has wide application and development prospects. Will bring a green revolution in the future. At present, the integration degree of an electric control system of an electric automobile is also increased continuously, a motor controller, a low-voltage DC-DC converter, an engine controller, a gearbox controller, a vehicle control unit and the like are integrated into a whole, and the integration degree is deeper and deeper. The automobile electric control system integrates a motor technology, a power electronic technology, a control technology, a modern microelectronic technology and the like. The advancement of the technology, the reliability of the technology and the working stability of the electric automobile determine the cost performance of the whole automobile and control the advancing pace of the electric automobile technology. The reliability of the electric control system of the automobile is one of the key factors directly influencing the reliable operation of the electric automobile.
however, at present, the test of the automobile electric control system needs to design a corresponding liquid cooling system for the system and the motor, so that the system is complex and the test is complex.
disclosure of Invention
aiming at the problems in the prior art, the invention aims to provide a no-load test method and a no-load test device for an automobile electric control system.
In order to achieve the purpose, the invention adopts the following technical scheme:
An empty-load test method of an automobile electric control system is characterized in that the automobile electric control system is connected with a high-voltage power supply through a high-voltage wire harness and is connected with a low-voltage power supply through a low-voltage wire harness, the automobile electric control system is connected with an upper computer through a PCAN interface card and is also connected with a motor, the method is applied to the upper computer, and the method comprises the following steps:
Receiving an input test instruction, and sending the test instruction to the automobile electric control system so that the automobile electric control system executes a product test program;
Receiving and displaying test parameters obtained by the automobile electric control system executing the product test program;
Comparing the test parameters with standard parameters, wherein the test parameters comprise an actually-measured rotating speed, an IGBT temperature, a motor temperature and a bus voltage;
When the test parameters are inconsistent with the standard parameters, acquiring fault contents corresponding to the inconsistent parameters;
and displaying the fault content.
In one embodiment, before receiving and displaying the test parameters obtained by the automobile electronic control system executing the product test program, the method further includes:
receiving communication abnormal information returned by the automobile electric control system;
And displaying the communication abnormal information on a test interface, and displaying an indicator light with a corresponding color on a connection state module of the test interface.
In one embodiment, the receiving the input test instruction includes:
receiving an input automobile electric control system code;
and inquiring a test instruction corresponding to the automobile electric control system code.
In one embodiment, the displaying the failure content includes:
inquiring a code number corresponding to the fault content;
And displaying the code on a test fault module of the test interface, and displaying an indicator light with a corresponding color.
in one embodiment, the method further comprises:
and when the test parameters are consistent with the standard parameters, displaying the communication normal information on a test interface, displaying an indicator lamp with a corresponding color on a connection state module of the test interface, and displaying an indicator lamp with a corresponding color when no fault exists on a test fault module of the test interface.
in one embodiment, the method further comprises:
recording the triggering time of a starting button after receiving a test instruction;
Recording the completion time of receiving the test parameters;
generating test time according to the trigger time of the start button and the completion time of receiving the test parameters;
And displaying the test time on a test interface.
The utility model provides an empty load testing arrangement of car electrical system, car electrical system is connected with high voltage power supply through high-pressure pencil, is connected with low voltage power supply through low-voltage pencil, car electrical system is connected with the host computer through the PCAN interface card, car electrical system still is connected with the motor, the device is used on the host computer, the device includes:
The first receiving module is used for receiving an input test instruction and sending the test instruction to the automobile electric control system so that the automobile electric control system executes a product test program;
The first display module is used for receiving and displaying test parameters obtained by the automobile electric control system executing the product test program;
The comparison module is used for comparing the test parameters with standard parameters, wherein the test parameters comprise an actually-measured rotating speed, an IGBT temperature, a motor temperature and a bus voltage;
the fault content query module is used for acquiring fault content corresponding to the inconsistent parameters when the test parameters are inconsistent with the standard parameters;
and the second display module is used for displaying the fault content.
In one embodiment, the apparatus further comprises
The second receiving module is used for receiving the communication abnormal information returned by the automobile electric control system;
And the third display module is used for displaying the communication abnormal information on a test interface and displaying an indicator light with a corresponding color on the connection state module of the test interface.
In one embodiment, the first receiving module includes:
The code receiving unit is used for receiving an input automobile electric control system code;
and the first query unit is used for querying the test instruction corresponding to the automobile electric control system code.
In one embodiment, the second display module comprises:
the second inquiry unit is used for inquiring the code number corresponding to the fault content;
and the code display unit is used for displaying the code on the test fault module of the test interface and displaying the indicator lamp with corresponding color.
Compared with the prior art, the no-load test method and the no-load test device for the automobile electric control system have the following advantages:
The automobile electric control system is connected with a high-voltage power supply through a high-voltage wire harness and is connected with a low-voltage power supply through a low-voltage wire harness, the automobile electric control system is connected with an upper computer through a PCAN interface card, the automobile electric control system is also connected with a motor, so that a test instruction is input into the upper computer, the upper computer can send the test instruction to the automobile electric control system through the PCAN interface card, the automobile electric control system executes a product test program to perform testing, receives a test parameter returned after the automobile electric control system executes the product test program, judges whether the automobile electric control system fails according to the test parameter and a standard parameter, if the automobile electric control system fails, obtains corresponding failure content according to inconsistent parameters and displays the failure content, and in the method, because the motor is not connected with a load, no-load testing is performed, the testing time is short, and the automobile electric control system and, and the comprehensive test of the automobile electric control system is also ensured, and the operation is simple.
Drawings
FIG. 1 is a schematic structural diagram of an unloaded test system of an automotive electronic control system provided by the invention;
FIG. 2 is a schematic flow chart of an unloaded test method of an electric control system of an automobile provided by the invention;
FIG. 3 is a schematic diagram of a test interface for communication anomalies in accordance with the present invention;
FIG. 4 is a schematic diagram of a test interface during testing for faults in accordance with the present invention;
FIG. 5 is a schematic diagram of a test interface during testing for faults in accordance with the present invention;
FIG. 6 is a schematic diagram of a normal interface for communication according to the present invention;
FIG. 7 is a schematic view of a test interface for successful testing according to the present invention;
Fig. 8 is a schematic diagram of an unloaded test device of an automobile electric control system provided by the invention.
Detailed Description
The present invention will be described more fully with reference to the following examples and comparative examples.
referring to fig. 1, fig. 1 is a schematic structural diagram of an unloaded test system of an automobile electric control system according to the present invention, the automobile electric control system is connected to a high-voltage power supply through a high-voltage wire harness and connected to a low-voltage power supply through a low-voltage wire harness, the automobile electric control system is connected to an upper computer through a PCAN interface card, and the automobile electric control system is further connected to a motor. Specifically, the high-voltage power supply is a high-voltage direct-current switching power supply or a battery pack, wherein the input of the high-voltage power supply is 220V two-phase alternating current, the output of the high-voltage power supply is 310V 20A high-voltage power, and the high-voltage power supply is used for connecting an automobile electric control system through a high-voltage wire harness. The low-voltage power supply is a low-voltage-stabilizing direct-current power supply, the input of the low-voltage power supply is 220V two-phase alternating current, the output of the low-voltage power supply is 12V direct current, and the low-voltage power supply is connected with an automobile electric control system through a low-voltage wiring harness. The upper computer is connected with the PCAN interface card through the USB interface, then the PCAN interface card is connected with the automobile electric control system through the CAN _ H and the CAN _ L, thereby completing the connection of the upper computer and the automobile electric control system, the automobile electric control system is also connected with the motor, the motor is placed on the motor bracket in the test process, the three-phase output end of the automobile electric control system is respectively connected with the three-phase input end corresponding to the motor, and the rotary transformer signal and the motor temperature end of the automobile electric control system are connected with the corresponding end of the motor. The no-load test method of the automobile electric control system can realize multiple test functions of no-load operation such as communication test, actual rotating speed of a motor, IGBT temperature, motor temperature, fault diagnosis and the like, and on the premise of achieving the detection purpose, the method is simple in rack design, reduces the rack construction cost, only does no-load operation for function confirmation test, does not carry out torque loading, and thus only needs the automobile electric control system and the motor, and can also reduce the requirement on a power supply system. Because only no-load test is carried out, the test time is short (about 1 min), and the heat productivity of the automobile electric control system and the motor is limited, the liquid cooling system of the automobile electric control system and the motor can be saved.
the invention provides a no-load test method of an automobile electric control system, which is applied to an upper computer, and the method comprises the following steps:
s202: receiving an input test instruction, and sending the test instruction to the automobile electric control system so that the automobile electric control system executes a product test program.
specifically, in consideration of reducing the test steps and verifying whether the factory program of the automobile electric control system is correctly refreshed or not, the automobile electric control system does not need to refresh the test program in the function confirmation test stage and directly adopts the product program test.
the upper computer is provided with test software, a user can open the test software in the upper computer and then input a corresponding test instruction to realize no-load test on the automobile electric control system, and the specific user input can be a test instruction for the operation of a driving motor of the automobile electric control system, so that the automobile electric control system can execute a product test program, for example, send the driving instruction to the motor and the like.
s204: and receiving and displaying the test parameters obtained by the automobile electric control system executing the product test program.
In the testing process, the automobile electric control system acquires parameters such as the actual rotating speed of the motor and the motor temperature through the rotary variable signal and the motor temperature end and acquires the IGBT temperature, the bus voltage and the like of the automobile electric control system, so that whether the testing is successful or not can be judged, and after the automobile electric control system acquires the testing parameters, the acquired testing parameters are sent to the upper computer through the PCAN interface card, so that the upper computer can judge whether the testing is successful or not.
After receiving the test parameters returned by the automobile electric control system, the upper computer can display the test parameters on an interface of the upper computer. Optionally, before the upper computer displays the parameters, the upper computer may select the obtained parameters, for example, determine the stability of the parameters, select the stable parameters for display, and the like, thereby avoiding the result of unsuccessful test caused by parameter jitter when the upper computer is just started.
optionally, before the automobile electric control system collects the test parameters, whether communication is connected or not can be judged in advance, if the communication is connected, the collection is carried out, and if not, the upper computer directly displays information of communication connection failure.
S206: and comparing the test parameters with standard parameters, wherein the test parameters comprise actually-measured rotating speed, IGBT temperature, motor temperature and bus voltage.
After the upper computer obtains the test parameters, the test parameters can be compared with the prestored standard parameters, so that which parameters are problematic can be determined, for example, when the test bus voltage is 0, the standard bus voltage should be 310V, and therefore, the connection of the high-voltage power supply can be judged to be possibly problematic, and the like, so that subsequent detection is facilitated. And optionally, the upper computer can also display the standard parameters so as to be convenient for the user to view.
S208: and when the test parameters are inconsistent with the standard parameters, acquiring fault contents corresponding to the inconsistent parameters.
s210: and displaying the fault content.
specifically, when the test parameters and the standard parameters are consistent, the test is successful. Otherwise, if only one of the test parameters is inconsistent with the standard parameter, the test is indicated to have a problem, so that the upper computer firstly judges which parameters are inconsistent in order to inquire the fault content, thereby acquiring the inconsistent parameters, and then compares the fault content according to the inconsistent parameters and displays the fault content. Specifically, the upper computer may preset a corresponding relationship between the parameters and the fault content, and after the upper computer obtains inconsistent parameters through comparison, the inconsistent parameters are compared with the corresponding relationship, for example, a first inconsistent parameter is compared, and then a second inconsistent parameter is compared until the fault content is queried.
In the method, an automobile electric control system is connected with a high-voltage power supply through a high-voltage wire harness and is connected with a low-voltage power supply through a low-voltage wire harness, the automobile electric control system is connected with an upper computer through a PCAN interface card, the automobile electric control system is also connected with a motor, so that a test instruction is input into the upper computer, the upper computer can send the test instruction to the automobile electric control system through the PCAN interface card, the automobile electric control system executes a product test program to carry out testing, receives a test parameter returned after the automobile electric control system executes the product test program, judges whether the automobile electric control system is in fault according to the test parameter and a standard parameter, if the automobile electric control system is in fault, obtains corresponding fault content according to inconsistent parameters and displays the fault content, and in the method, because the motor is not connected with a load, no-, the corresponding liquid cooling system does not need to be designed for the automobile electric control system and the motor, comprehensive testing of the automobile electric control system is also ensured, and the operation is simple.
in one embodiment, before receiving and displaying the test parameters obtained by the automobile electronic control system executing the product test program, the method further includes: receiving communication abnormal information returned by the automobile electric control system; and displaying the communication abnormal information on a test interface, and displaying an indicator light with a corresponding color on a connection state module of the test interface.
specifically, with reference to fig. 3, fig. 3 shows a schematic diagram of a test interface during communication abnormality, where a user has not input a test instruction, after the test software is turned on, the test software automatically performs communication detection, and when the communication abnormality occurs, information about the communication abnormality between the host computer and the vehicle electronic control system is displayed at a connection state, and an indicator light with a corresponding color, such as a yellow indicator light, may be displayed, so that the communication abnormality may be more intuitively represented. And when the communication is abnormal, the user can (1) check whether the 12V power supply of the automobile electric control system is normal. (2) And whether the CAN line connection is actually plugged with an automobile electric control system or not is judged. (3) And (3) checking whether the connection between the PCAN interface card and the CAN line of the automobile electric control system is normal, optionally popping up another dialog box after the upper computer outputs abnormal connection state, wherein the processing modes of the steps (1) to (3) are displayed, so that a user CAN conveniently check the fault as soon as possible.
in one embodiment, the receiving the input test instruction includes: receiving an input automobile electric control system code; and inquiring a test instruction corresponding to the automobile electric control system code.
Specifically, referring to fig. 4, fig. 4 is a schematic diagram of a test interface during a test failure in an embodiment of the present invention, where an input code of the car electronic control system in fig. 4 is a code of the car electronic control system mentioned in this embodiment, for convenience, a corresponding relationship between the code of the car electronic control system and a test instruction is pre-established in an upper computer, and after a user inputs the code of the corresponding car electronic control system, the upper computer queries the pre-stored corresponding relationship between the code of the car electronic control system and the test instruction to obtain the corresponding test instruction, and then sends the test instruction to the car electronic control system. In other embodiments, a user can directly input a natural language, then the upper computer splits the natural language to obtain a plurality of participles, then the participles are compared with pre-stored standard participles to obtain automobile electric control system codes corresponding to the standard participles, then corresponding test instructions are obtained according to the corresponding relation between the pre-stored automobile electric control system codes and the test instructions, and then the test instructions are sent to the automobile electric control system.
In one embodiment, referring to fig. 5, fig. 5 is a schematic diagram of a test interface during testing a fault according to another embodiment of the present invention, and with reference to fig. 4, the displaying the fault content includes: inquiring a code number corresponding to the fault content; and displaying the code on a test fault module of the test interface, and displaying an indicator light with a corresponding color.
Specifically, after receiving the test parameters returned by the automobile electronic control system, the upper computer displays the test parameters in the test interface, for example, the parameter display module in fig. 4 and 5, since the test parameters can be obtained, it indicates that the connection state is a successful test, so that a green indicator lamp is displayed at the connection state of the test interface, and since the test has a fault, the corresponding fault content is displayed at the test fault of the test interface.
as shown in fig. 5, the fault content is 41, and the temperature of the motor is-40 degrees, the upper computer can display the solution method of checking whether the resolver signal inserted in the motor is plugged in real or not and whether the wiring harness is abnormal or not, so that a user can check the fault in time, and the test efficiency is improved.
in one embodiment, the method further comprises: and when the test parameters are consistent with the standard parameters, displaying the communication normal information on a test interface, displaying an indicator lamp with a corresponding color on a connection state module of the test interface, and displaying an indicator lamp with a corresponding color when no fault exists on a test fault module of the test interface.
in one embodiment, the method further comprises: recording the triggering time of a starting button after receiving a test instruction; recording the completion time of receiving the test parameters; generating test time according to the trigger time of the start button and the completion time of receiving the test parameters; and displaying the test time on a test interface.
with reference to fig. 6 and 7, fig. 6 is a schematic diagram of a test interface for successful testing in the present invention; FIG. 7 is a schematic diagram of a test interface for successful testing according to the present invention.
Before testing, a user builds a circuit according to the graph 1, then clicks a button to test the rotating speed, after the test is finished, the test finished state is displayed in a connection state column, and the test result is displayed in a test fault column. And if the fault does not exist, directly displaying that the test is finished.
in practical application, a user firstly builds a circuit according to fig. 1, then opens software in an upper computer, clicks a button in the software, judges whether a connection state is successful, and displays information of communication abnormity at the connection state if the connection fails, as shown in fig. 3. If the connection is successful, displaying information of normal communication at the connection state, as shown in fig. 6 and 7, inputting a code of the automobile electric control system at a code input position of the automobile electric control system by a user, inquiring a corresponding test instruction according to the code by an upper computer, sending the test instruction to the automobile electric control system, acquiring test parameters including motor rotating speed, IGBT temperature, motor temperature, bus voltage and the like by the automobile electric control system according to the test instruction, sending the acquired test parameters to the upper computer, displaying the test parameters by the upper computer, comparing the test parameters with standard parameters to obtain inconsistent parameters, acquiring fault content according to the inconsistent parameters, displaying a code of the fault content to a test fault module, and displaying an indicator light of a corresponding color when no fault exists in the test fault module if the inconsistent parameters do not exist, such as green. Optionally, the upper computer can also record the trigger time of the start button after receiving the test instruction; stopping the triggering time of the button or the completion time of receiving the test parameters; generating test time according to the trigger time of the start button and the completion time of receiving the test parameters; and displaying the test time on a test interface, as shown in fig. 7.
it should be understood that, although the steps in the flowchart of fig. 2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 2 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 8, there is provided an unloaded test device for an electric control system of an automobile, the electric control system of the automobile is connected to a high-voltage power supply through a high-voltage wire harness and connected to a low-voltage power supply through a low-voltage wire harness, the electric control system of the automobile is connected to an upper computer through a PCAN interface card, the electric control system of the automobile is further connected to a motor, the device is applied to the upper computer, and the device includes: the system comprises a first receiving module 100, a first display module 200, a comparison module 300, a fault content query module 400 and a second display module 500.
The first receiving module 100 is configured to receive an input test instruction, and send the test instruction to the automobile electronic control system, so that the automobile electronic control system executes a product test program.
the first display module 200 is configured to receive and display a test parameter obtained by the automobile electronic control system executing the product test program.
And the comparison module 300 is used for comparing the test parameters with the standard parameters, wherein the test parameters comprise actual measurement rotating speed, IGBT temperature, motor temperature and bus voltage.
A fault content query module 400, configured to, when the test parameter is inconsistent with the standard parameter, obtain a fault content corresponding to the inconsistent parameter.
and a second display module 500, configured to display the failure content.
in one embodiment, the apparatus further comprises
And the second receiving module is used for receiving the communication abnormal information returned by the automobile electric control system.
And the third display module is used for displaying the communication abnormal information on a test interface and displaying an indicator light with a corresponding color on the connection state module of the test interface.
In one embodiment, the first receiving module 100 includes:
the code receiving unit is used for receiving an input automobile electric control system code;
And the first query unit is used for querying the test instruction corresponding to the automobile electric control system code.
In one embodiment, the second display module 500 includes:
The second inquiry unit is used for inquiring the code number corresponding to the fault content;
And the code display unit is used for displaying the code on the test fault module of the test interface and displaying the indicator lamp with corresponding color.
In one embodiment, the apparatus further comprises:
And the third display module is used for displaying the communication normal information on a test interface when the test parameters are consistent with the standard parameters, displaying the indicator lamps with corresponding colors on the connection state module of the test interface, and displaying the indicator lamps with corresponding colors when no fault exists on the test fault module of the test interface.
in one embodiment, the apparatus further comprises:
the first recording module is used for recording the triggering time of the starting button after receiving the test instruction; recording the completion time of receiving the test parameters;
The test time generation module is used for generating test time according to the trigger time of the start button and the time of receiving the test parameters;
and the fourth display module is used for displaying the test time on a test interface.
For specific limitations of the no-load test device of the automobile electric control system, reference may be made to the above limitations of the no-load test method of the automobile electric control system, and details thereof are not repeated herein. All or part of each module in the no-load test device of the automobile electric control system can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the insubstantial modifications and adaptations made by those skilled in the art according to the above descriptions of the present invention are within the scope of the present invention.
Claims (10)
1. an empty-load test method of an automobile electric control system is characterized in that the automobile electric control system is connected with a high-voltage power supply through a high-voltage wire harness and is connected with a low-voltage power supply through a low-voltage wire harness, the automobile electric control system is connected with an upper computer through a PCAN interface card, the automobile electric control system is also connected with a motor, the method is applied to the upper computer, and the method comprises the following steps:
receiving an input test instruction, and sending the test instruction to the automobile electric control system so that the automobile electric control system executes a product test program;
Receiving and displaying test parameters obtained by the automobile electric control system executing the product test program;
comparing the test parameters with standard parameters, wherein the test parameters comprise an actually-measured rotating speed, an IGBT temperature, a motor temperature and a bus voltage;
when the test parameters are inconsistent with the standard parameters, acquiring fault contents corresponding to the inconsistent parameters;
and displaying the fault content.
2. the method of claim 1, wherein before receiving and displaying the test parameters obtained by the vehicle electrical control system executing the product test program, the method further comprises:
receiving communication abnormal information returned by the automobile electric control system;
and displaying the communication abnormal information on a test interface, and displaying an indicator light with a corresponding color on a connection state module of the test interface.
3. The method of claim 2, wherein receiving the input test instruction comprises:
Receiving an input automobile electric control system code;
And inquiring a test instruction corresponding to the automobile electric control system code.
4. the method of claim 3, wherein said displaying said fault content comprises:
inquiring a code number corresponding to the fault content;
And displaying the code on a test fault module of the test interface, and displaying an indicator light with a corresponding color.
5. The method of claim 4, further comprising:
And when the test parameters are consistent with the standard parameters, displaying the communication normal information on a test interface, displaying an indicator lamp with a corresponding color on a connection state module of the test interface, and displaying an indicator lamp with a corresponding color when no fault exists on a test fault module of the test interface.
6. The method of any one of claims 1 to 4, further comprising:
Recording the triggering time of a starting button after receiving a test instruction;
Recording the completion time of receiving the test parameters;
Generating test time according to the trigger time of the start button and the completion time of receiving the test parameters;
And displaying the test time on a test interface.
7. The utility model provides an empty load testing arrangement of car electrical system which characterized in that, car electrical system is connected with high voltage power supply through the high pressure pencil, is connected with low voltage power supply through the low pressure pencil, car electrical system is connected with the host computer through the PCAN interface card, car electrical system still is connected with the motor, the device is used on the host computer, the device includes:
the first receiving module is used for receiving an input test instruction and sending the test instruction to the automobile electric control system so that the automobile electric control system executes a product test program;
The first display module is used for receiving and displaying test parameters obtained by the automobile electric control system executing the product test program;
the comparison module is used for comparing the test parameters with standard parameters, wherein the test parameters comprise an actually-measured rotating speed, an IGBT temperature, a motor temperature and a bus voltage;
the fault content query module is used for acquiring fault content corresponding to the inconsistent parameters when the test parameters are inconsistent with the standard parameters;
and the second display module is used for displaying the fault content.
8. The apparatus of claim 7, further comprising
the second receiving module is used for receiving the communication abnormal information returned by the automobile electric control system;
and the third display module is used for displaying the communication abnormal information on a test interface and displaying an indicator light with a corresponding color on the connection state module of the test interface.
9. The apparatus of claim 8, wherein the first receiving module comprises:
the code receiving unit is used for receiving an input automobile electric control system code;
And the first query unit is used for querying the test instruction corresponding to the automobile electric control system code.
10. the apparatus of claim 9, wherein the second display module comprises:
The second inquiry unit is used for inquiring the code number corresponding to the fault content;
And the code display unit is used for displaying the code on the test fault module of the test interface and displaying the indicator lamp with corresponding color.
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