CN114326651B - TCU test system and method - Google Patents
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Abstract
The invention provides a TCU test system and a TCU test method, wherein the TCU test system comprises: the load box is used for respectively supplying power to the signal module and the TCU module and realizing signal transmission between the signal module and the TCU module; the signal module comprises a switch signal generator and a function signal generator which are respectively connected with the load box, the switch signal generator sends a key signal to the TCU module through the load box so that the TCU module enters a working state according to the key signal, and the function signal generator is used for controlling and adjusting an output signal of the TCU module so that the TCU load module executes corresponding actions according to the output signal; the TCU load module receives the output signal issued by the TCU module through the load box and sends a state feedback signal to the load box after corresponding actions are executed. The TCU test system provided by the invention can maximally detect the software and hardware functions of the TCU module, and has the advantages of low test cost and simple operation.
Description
Technical Field
The invention relates to the technical field of TCU bench test, in particular to a TCU test system and a TCU test method.
Background
With the rapid development of electronic control of automobiles and the application of computer and information technologies, more and more electronic control technologies are applied to automobiles, and automobile electronic control systems have been developed rapidly. An automatic transmission electronic control unit (Transmission Control Unit) is one of the core control systems of a vehicle equipped with an automatic transmission.
The automatic transmission electronic control unit may determine the driver's intention to control the current vehicle gear by processing various sensor signals representing the current vehicle running state during the running of the vehicle.
In the prior art, electronic components on the automobile approach to complexity, and people have higher and higher requirements on the quality and comfort of the automobile. The quality requirements faced by TCU modules are also increasing. The traditional TCU module rack test execution operation is relatively single, and the TCU module test rack needs to be built again for each function of each TCU module, so that the software and hardware functions of the TCU module are not verified to the maximum degree by the corresponding load system design, the test cost of the TCU module is high, and the test process is complicated.
Disclosure of Invention
Based on the above, the invention aims to provide a TCU test system and a TCU test method, which are used for solving the problems of high test cost and complicated test process caused by single operation of a traditional TCU test bench.
According to the TCU test system provided by the invention, the TCU test system comprises a load box, and a signal module, a TCU module and a TCU load module which are connected with the load box, wherein:
the load box is used for respectively supplying power to the signal module and the TCU module and realizing signal transmission between the signal module and the TCU module;
the signal module comprises a switch signal generator and a function signal generator which are respectively connected with the load box, the switch signal generator sends a key signal to the TCU module through the load box so that the TCU module enters a working state according to the key signal, and the function signal generator is used for controlling and adjusting an output signal of the TCU module so that the TCU load module executes corresponding actions according to the output signal;
the TCU load module receives the output signal issued by the TCU module through the load box and sends a state feedback signal to the load box after corresponding actions are executed.
In summary, according to the TCU test system described above, the load box is configured to supply power to the signal module and the TCU module, and is configured to be used for signal transmission between the signal module and the TCU module, and send a key signal to the TCU module through the signal module, so that the TCU module enters a working state, and then the function signal generator in the signal module continuously adjusts an output signal of the TCU module through control, so that a TCU load module that receives the output signal can continuously perform an action corresponding to the output signal, thereby testing whether each function of the TCU module is normal, and meanwhile, after each corresponding action is performed by the TCU load module, a status feedback signal is sent to the load box to determine a test result of each function of the TCU module, so that a test procedure for comprehensively testing each function of the TCU module is achieved, and a test bench for the TCU module is required to be rebuilt.
Further, the load box comprises a power supply unit, a signal receiving and transmitting unit and a signal processing unit, wherein the signal receiving and transmitting unit and the signal processing unit are respectively connected with the power supply unit, the signal receiving and transmitting unit is used for receiving signals sent by the TCU module and the signal module, the signal receiving and transmitting unit is also connected with the signal processing unit, and the signal processing unit is respectively connected with the TCU module, the signal module and the TCU load module.
Further, the TCU test system further includes a power module and a CAN bus module, the power module is configured to supply power to the load box, and the CAN bus module is configured to perform network communication between the load box and the TCU module.
Further, the TCU test system further includes a status indication module, configured to display a current corresponding functional status of the load box according to the received status feedback signal, where the status indication module further includes a gear switch indication unit, a ramp switch indication unit, a clutch motor dummy load indication unit, a shift motor dummy load indication unit, and a gear selecting motor dummy load indication unit that are connected with the load box respectively.
Further, the functional signal generator comprises a position signal generator and a rotating speed signal generator, and the position signal generator and the rotating speed signal generator are connected with the signal transceiver.
Further, the TCU load module includes a motor load unit and a motor dummy load unit, which are connected with the signal processing unit, respectively, and the motor load unit and the motor dummy load unit are both used for executing corresponding actions according to the output signals issued by the TCU module.
Further, the motor load unit comprises a clutch motor, a gear shifting motor and a gear selecting motor, and the motor dummy load unit comprises a clutch motor dummy load unit, a gear shifting motor dummy load unit and a gear selecting motor dummy load unit.
Further, the signal module further comprises a gear switch generator and a ramp switch generator, wherein the gear switch generator and the ramp switch generator are electrically connected with the signal transceiver, the gear switch generator is used for sending a gear control instruction to the TCU module, and the ramp switch generator is used for sending a climbing auxiliary instruction to the TCU module.
Further, the load box further comprises a resistance unit and a safety unit, the power module is electrically connected with the safety power supply, and the CAN bus module is electrically connected with the resistance unit.
The invention also provides a TCU test method, which is realized by a TCU test system, and comprises the following steps:
starting a power supply module to start a load box to supply power to the TCU module and the signal module, and sending a key signal to the TCU module by a switch signal generator through the load box so as to enable the TCU module to enter a working state;
the position signal generator sends a signal to the TCU module through the load box so that the TCU module starts to send a control instruction;
the control instruction is input to the motor load unit or the motor dummy load unit through the load box, so that the motor load unit or the motor dummy load unit executes actions corresponding to the current control instruction;
and after the motor load unit or the motor dummy load unit executes corresponding actions, sending a state feedback signal to the load box so as to judge whether the control instruction issued by the TCU module is completed or not.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a flow chart of a TCU testing system according to a first embodiment of the invention;
FIG. 2 is a flow chart of a TCU testing system according to a second embodiment of the invention;
fig. 3 is a schematic structural diagram of a TCU testing method according to a third embodiment of the present invention.
The invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a schematic structural diagram of a TCU test system according to a first embodiment of the present invention is shown, the system includes a load box 11, and a signal module 12, a TCU module 13 and a TCU load module 14 connected to the load box 11, wherein:
the load box 11 includes a power supply unit 111, and the power supply unit 111 is electrically connected to the signal module 12 and the TCU module 13, so as to supply power to the signal module 12 and the TCU module 13, and meanwhile, the load box 11 is mainly used for implementing signal transmission between the signal module 12 and the TCU module 13, that is, the signal module 12 sends a relevant signal to the TCU module 13 through the load box 11, so as to control the TCU to send a corresponding control instruction.
Further, the signal module 12 includes a switch signal generator 121 and a plurality of different function signal generators respectively connected with the load box 11, the switch signal generator 121 sends a key signal to the load box 11 first, then the load box 11 is forwarded to the TCU module 13, the TCU module 13 controls itself to enter a working state according to the received key signal, in this embodiment, the key signal sent by the switch signal generator may be a voltage signal triggering the TCU module to work, or may also be a CAN network message, the function generator is used for controlling and adjusting an output signal of the TCU module 13, that is, the function generator sends a control signal to the TCU module 13 through the load box 11, so that the TCU module 13 performs adjustment of the output signal according to the different control signals, and is respectively electrically connected with the load box 11 through setting a plurality of different function generators, thereby effectively implementing different output signals to the TCU module 13, so that the TCU module 13 sends output signals corresponding to the TCU load module 14 corresponding to various functions, so as to enable the TCU load module 14 to execute corresponding action according to the output signals, thereby implementing effective test of various functions of the TCU module 13.
It should be noted that, the TCU module 13 transmits signals with the signal module 12 or signals with the TCU load module 14 through the load box 11, and after the TCU load module 14 performs a corresponding action according to the received output signal, the TCU load module 14 sends a corresponding status feedback signal to the load box 11, so that the load box 11 confirms whether the corresponding function of the TCU module 13 is normal.
In summary, according to the TCU test system described above, the load box 11 is provided to supply power to the signal module 12 and the TCU module 13, and is used for transmitting signals between the signal module 12 and the TCU module 13, a key signal is sent to the TCU module 13 by the signal module 12, so that the TCU module 13 enters a working state, and then the function signal generator in the signal module 12 continuously adjusts the output signal of the TCU module 13 by controlling and continuously adjusting the output signal of the TCU module 13, so that the TCU load module 14 receiving the output signal can continuously execute actions corresponding to the output signal, thereby testing whether each function of the TCU module 13 is normal, and meanwhile, after each corresponding action is executed by the TCU load module 14, a status feedback signal is sent to the load box 11, so as to determine the test result of each function of the TCU module 13, thereby achieving the test process of comprehensively testing each function of the TCU module 13, without having to build a test bench again for each function of the TCU module 13 in a conventional manner, and having simple operation and greatly reduced test cost.
Referring to fig. 2, a schematic diagram of a TCU testing system according to a second embodiment of the present invention is shown, and the TCU testing system according to the present embodiment is substantially the same as the first embodiment, and the difference is that:
the TCU test system further includes a power module 15 and a CAN bus module, the power module 15 is configured to supply power to the load box 11, and the CAN bus module is configured to perform network communication between the load box 11 and the TCU module 13, in this embodiment, the load box 11 includes a power supply unit 111, and a signal transceiver unit 112 and a signal processing unit 113 that are respectively connected to the power supply unit 111, that is, the power module 15 supplies power to the load box 11, and the power supply unit 111 in the load box 11 supplies power to the signal transceiver unit 112, the signal processing unit 113, each component device in the signal module 12, and each component device in the TCU module 13, so as to ensure normal operation of the whole TCU test system.
It should be noted that, in this embodiment, the load box 11 further includes a resistor unit and a safety unit, the power module 15 is electrically connected to the safety power supply, the CAN bus module is electrically connected to the resistor unit, and the CAN bus module may include one or more CAN signals, and each CAN branch line is matched with a corresponding resistor unit to prevent the signals from being emitted.
Further, the signal transceiver unit 112 is configured to receive a signal sent by the TCU module 13 or the signal module 12, the signal receiving unit is further connected to the signal processing unit 113 to send the signal to the signal processing module, and the signal processing unit 113 is respectively connected to the TCU module 13, the signal module 12, and the TCU load module 14, so that the signal processing module can determine a signal receiving party in time by analyzing the signal, thereby implementing signal transmission among the TCU module 13, the signal module 12, and the TCU load module 14.
Further, the function signal generator includes a position signal generator and a rotation speed signal generator 125, where the position signal generator and the rotation speed signal generator 125 are both connected with the signal transceiver, in this embodiment, when the function of the TCU module 13 needs to be tested, the position signal generator or the rotation speed signal generator 125 sends an instruction to the load box 11 to adjust and control the output signal of the TCU module 13, so as to test various functions of the TCU module 13.
Specifically, the position signal generator mainly includes a gear selection position signal generator 122, a gear shift position signal generator 123 and a clutch position signal generator 124, the gear selection position signal generator 122 is used for sending a gear shift position signal to the TCU module 13, the gear shift position signal generator 123 is used for sending a gear shift position signal to the TCU module 13, the clutch position signal generator 124 is used for sending a clutch position signal to the TCU module 13, and the rotating speed signal generator 125 in the signal module 12 is used for sending an output power signal of the load motor to the TCU module 13.
In this embodiment, the gear selection position signal generator sends a gear signal to the TCU module to remind the current need to perform the gear shifting operation; the shift position signal generator is also a gear signal for sending to the TCU module the gear to be changed. The rotational speed signal generator comprises an input shaft signal generator and an output shaft signal generator, and the input shaft signal generator and the output shaft signal generator send two different speed signals.
Further, the signal module 12 further includes a gear switch generator 126 and a ramp switch generator 127, where the gear switch generator 126 and the ramp switch generator 127 are electrically connected to the signal transceiver, the gear switch generator 126 is configured to send a gear control instruction to the TCU module 13, and the ramp switch generator 127 is configured to send a climbing assistance instruction to the TCU module 13, and in this embodiment, the gear switch generator is specifically a two-gear start switch and is configured to send a switching signal; the ramp switch generator is in particular a ramp auxiliary switch.
Further, the TCU load module 14 includes a motor load unit and a motor dummy load unit, which are respectively connected to the signal processing unit 113, when the TCU module 13 realizes signal transmission with the signal module 12 through the load box 11, so as to determine the function to be tested currently, and then the TCU module 13 sends a control command to the TCU load module 14 through the load box 11, so that the motor load unit and the motor dummy load unit in the TCU load module 14 execute corresponding operations according to the control command.
It may be understood that in this embodiment, the motor load unit includes a clutch motor, a gear shifting motor, and a gear selecting motor, and the motor dummy load unit includes a clutch motor dummy load unit, a gear shifting motor dummy load unit, and a gear selecting motor dummy load unit, where each component device in the motor load unit or each component device in the motor dummy load unit is electrically connected to the signal receiving unit in the load box 11, and by setting various load motors and dummy load motors, the operation corresponding to the TCU function is simulated.
It should be noted that, the purpose of setting the motor dummy load unit is that in some TCU test projects, since the operation of the motor dummy load unit may affect the test result, the test accuracy can be effectively improved by controlling the operation of the motor dummy load unit.
Further, the TCU test system further includes a status indication module, configured to display a current corresponding functional status of the load box 11 according to the received status feedback signal, where the status indication module further includes a gear switch indication unit 161, a ramp switch indication unit 162, a clutch motor dummy load indication unit 163, a shift motor dummy load indication unit 164, and a gear selecting motor dummy load indication unit 165, which are respectively connected to the load box 11, and by setting various indication units, it is possible to accurately determine a status of the TCU load module 14 after executing a corresponding action of the output signal sent by the TCU module 13, and it is required to be noted that, after executing the corresponding action, the TCU load module 14 sends a status feedback instruction to the load box 11, so that an indication unit corresponding to the status feedback instruction in the status indication module is controlled by the load box 11, thereby facilitating visual determination of a result after the test of the TCU module 13.
Specifically, in this embodiment, each indication unit is set to be an indication lamp, and whether the load corresponding to the TCU load module works normally can be known by controlling the lighting of the indication lamp.
In summary, according to the TCU test system described above, the load box 11 is provided to supply power to the signal module 12 and the TCU module 13, and is used for transmitting signals between the signal module 12 and the TCU module 13, a key signal is sent to the TCU module 13 by the signal module 12, so that the TCU module 13 enters a working state, and then the function signal generator in the signal module 12 continuously adjusts the output signal of the TCU module 13 by controlling and continuously adjusting the output signal of the TCU module 13, so that the TCU load module 14 receiving the output signal can continuously execute actions corresponding to the output signal, thereby testing whether each function of the TCU module 13 is normal, and meanwhile, after each corresponding action is executed by the TCU load module 14, a status feedback signal is sent to the load box 11, so as to determine the test result of each function of the TCU module 13, thereby achieving the test process of comprehensively testing each function of the TCU module 13, without having to build a test bench again for each function of the TCU module 13 in a conventional manner, and having simple operation and greatly reduced test cost.
Referring to fig. 3, a flowchart of a TCU testing method according to a third embodiment of the present invention is shown, the method is implemented by a TCU testing system, and the method includes steps S01 to S04, where:
step S01: starting the power module 15 to start the load box 11 to supply power to the TCU module 13 and the signal module 12, and sending a key signal to the TCU module 13 by the switch signal generator 121 through the load box 11 so as to enable the TCU module 13 to enter a working state;
it should be noted that, the power module 15 is turned on to start the TCU test system, and then the switch signal generator 121 controls the TCU module 13 to enter the working state so as to test various functions of the TCU module 13.
Step S02: the position signal generator sends a signal to the TCU module 13 through the load box 11 so that the TCU module 13 starts to send out a control instruction;
it will be appreciated that the position signal generator may control the output signal of the TCU module 13, i.e. the control command to the TCU load module 14, through the load box 11, and it should be noted that the position signal generator may send various signals, such as signals related to gear shifting, gear selecting, clutches, etc., so as to achieve the purpose of making the TCU module 13 send different control commands, thereby achieving the purpose of testing various functions of the TCU module 13.
Step S03: the control instruction is input to the motor load unit or the motor dummy load unit through the load box 11 so that the motor load unit or the motor dummy load unit executes the action corresponding to the current control instruction;
it should be noted that, the TCU module 13 sends a control instruction corresponding to the test function to the TCU load module 14 through the load box 11, so that each motor load unit and each motor dummy load unit in the TCU load module 14 execute an action related to the control instruction, thereby completing the test of the related function of the TCU module 13.
Step S04: after the motor load unit or the motor dummy load unit executes the corresponding action, a status feedback signal is sent to the load box 11 to determine whether the control instruction issued by the TCU module 13 is completed.
It should be noted that, in order to intuitively determine the execution status of the TCU load module 14, the TCU load module 14 may send a status feedback signal to the load box 11 after executing the related action, and the load box 11 may light up the corresponding indication unit in the execution control indication module according to the status feedback, so as to effectively determine whether the control instruction issued by the TCU module 13 is completed, that is, whether the related function of the TCU module 13 is normal.
In summary, according to the above TCU testing method, the load box 11 is set to supply power to the signal module 12 and the TCU module 13 respectively, and is used for signal transmission between the signal module 12 and the TCU module 13, a key signal is sent to the TCU module 13 by setting the signal module 12, so that the TCU module 13 enters a working state, then the function signal generator in the signal module 12 continuously adjusts the output signal of the TCU module 13 by controlling and continuously adjusting the output signal of the TCU module 13, so that the TCU load module 14 receiving the output signal can continuously execute actions corresponding to the output signal, thereby testing whether each function of the TCU module 13 is normal, and meanwhile, after each corresponding action is executed by the TCU load module 14, a status feedback signal is sent to the load box 11, so as to determine the test result of each function of the TCU module 13, thereby achieving the test process of comprehensively testing each function of the TCU module 13, without the need of re-constructing the TCU module 13 for each function in a conventional manner, the operation is simple, and the test cost is greatly reduced.
Those of skill in the art will appreciate that the logic and/or steps represented in the flow diagrams or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain or store the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: a connection (electronic device) with one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. The TCU test system is characterized by comprising a load box, a signal module, a TCU module and a TCU load module, wherein the signal module, the TCU module and the TCU load module are connected with the load box, and the TCU load module comprises the following components:
the load box is used for respectively supplying power to the signal module and the TCU module and realizing signal transmission between the signal module and the TCU module;
the signal module comprises a switch signal generator and a function signal generator which are respectively connected with the load box, the switch signal generator sends a key signal to the TCU module through the load box so that the TCU module enters a working state according to the key signal, and the function signal generator is used for controlling and adjusting an output signal of the TCU module so that the TCU load module executes corresponding actions according to the output signal;
the TCU load module receives an output signal issued by the TCU module through the load box and sends a state feedback signal to the load box after corresponding actions are executed;
the load box comprises a power supply unit, a signal receiving and transmitting unit and a signal processing unit, wherein the signal receiving and transmitting unit and the signal processing unit are respectively connected with the power supply unit, the signal receiving and transmitting unit is used for receiving signals sent by the TCU module and the signal module, the signal receiving and transmitting unit is also connected with the signal processing unit, and the signal processing unit is respectively connected with the TCU module, the signal module and the TCU load module;
the TCU test system also comprises a power supply module and a CAN bus module, wherein the power supply module is used for supplying power to the load box, and the CAN bus module is used for network communication between the load box and the TCU module;
the TCU test system further comprises a state indication module, a gear switch indication unit, a ramp switch indication unit, a clutch motor dummy load indication unit, a gear shifting motor dummy load indication unit and a gear selecting motor dummy load indication unit, wherein the gear switch indication unit, the ramp switch indication unit, the clutch motor dummy load indication unit, the gear shifting motor dummy load indication unit and the gear selecting motor dummy load indication unit are respectively connected with the load box;
the signal module further comprises a gear switch generator and a ramp switch generator, the gear switch generator and the ramp switch generator are electrically connected with the signal transceiver, the gear switch generator is used for sending gear control instructions to the TCU module, and the ramp switch generator is used for sending climbing auxiliary instructions to the TCU module
The functional signal generator comprises a position signal generator and a rotating speed signal generator, and the position signal generator and the rotating speed signal generator are both connected with the signal transceiver.
2. The TCU test system according to claim 1, wherein the TCU load module comprises a motor load unit and a motor dummy load unit, which are connected to the signal processing unit, respectively, and the motor load unit and the motor dummy load unit are each configured to perform a corresponding action according to the output signal issued by the TCU module.
3. The TCU test system according to claim 2, wherein the motor load unit comprises a clutch motor, a shift motor, a gear selection motor, respectively, and the motor dummy load unit comprises a clutch motor dummy load unit, a shift motor dummy load unit, a gear selection motor dummy load unit.
4. The TCU test system according to claim 1, wherein the load box further comprises a resistive unit and a safety unit, the power module being electrically connected to the safety unit, the CAN bus module being electrically connected to the resistive unit.
5. A TCU testing method implemented by the TCU testing system of claim 1, the method comprising:
starting a power supply module to start a load box to supply power to the TCU module and the signal module, and sending a key signal to the TCU module by a switch signal generator through the load box so as to enable the TCU module to enter a working state;
the position signal generator sends a signal to the TCU module through the load box so that the TCU module starts to send a control instruction;
the control instruction is input to the motor load unit or the motor dummy load unit through the load box, so that the motor load unit or the motor dummy load unit executes actions corresponding to the current control instruction;
and after the motor load unit or the motor dummy load unit executes corresponding actions, sending a state feedback signal to the load box so as to judge whether the control instruction issued by the TCU module is completed or not.
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| CN203606696U (en) * | 2013-11-28 | 2014-05-21 | 中国第一汽车股份有限公司 | Automatic testing platform of car automatic gearbox hardware system |
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| CN108459580A (en) * | 2018-02-13 | 2018-08-28 | 上海大学 | A kind of universal environment Durable test system of automobile TCU |
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| CN102103190A (en) * | 2009-12-16 | 2011-06-22 | 鸿富锦精密工业（深圳）有限公司 | Overcurrent protection test system |
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|---|---|---|---|---|
| KR101199593B1 (en) * | 2011-09-15 | 2012-11-12 | 주식회사 케피코 | Load box for EMC test of eletronic control unit |
| CN102841271A (en) * | 2012-05-10 | 2012-12-26 | 同济大学 | Electromagnetic compatibility testing platform for electric control unit of double-clutch automatic transmission |
| CN203606696U (en) * | 2013-11-28 | 2014-05-21 | 中国第一汽车股份有限公司 | Automatic testing platform of car automatic gearbox hardware system |
| CN104020680A (en) * | 2014-06-18 | 2014-09-03 | 盛瑞传动股份有限公司 | Automatic software testing method and system based on hardware-in-loop system |
| CN108459580A (en) * | 2018-02-13 | 2018-08-28 | 上海大学 | A kind of universal environment Durable test system of automobile TCU |
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