CN216351086U - Test device and system of electric control board - Google Patents
Test device and system of electric control board Download PDFInfo
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- CN216351086U CN216351086U CN202122894126.6U CN202122894126U CN216351086U CN 216351086 U CN216351086 U CN 216351086U CN 202122894126 U CN202122894126 U CN 202122894126U CN 216351086 U CN216351086 U CN 216351086U
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Abstract
The utility model provides a test device and a system of an electric control board, which relate to the technical field of automatic test, and the test device comprises: the system comprises a data acquisition module, a test host and a test load; the electric control board to be tested is used for receiving the action instruction of the test host, sending a control instruction to the test load based on the action instruction so as to drive the test load to execute the target action, and feeding back the working state information of the electric control board to be tested to the test host; the data acquisition module is used for receiving an acquisition instruction of the test host and acquiring target test data of the electric control board to be tested based on the acquisition instruction; the test host is used for judging whether the electric control board to be tested passes the test or not based on the target test data and the working state information. The testing device can change the traditional manual qualitative testing mode into automatic quantitative testing of a machine, thereby ensuring the normal function of each electric control board passing the test and the consistency of performance indexes, further ensuring the running stability and reliability of the whole machine of the product and reducing the repair rate of the product.
Description
Technical Field
The utility model relates to the technical field of automatic testing, in particular to a testing device and a testing system of an electric control board.
Background
With the rapid development of economy and technology, the traditional electric control technology of the range hood gradually evolves to the frequency conversion technology. At present, more and more range hoods are generally driven by a frequency conversion technology, but compared with a simple control mode of starting a single-phase relay of a traditional range hood, the range hood is accompanied by complicated circuit design and functions of a frequency conversion electric control board.
Among the prior art, the automatically controlled board of frequency conversion smoke ventilator carries out function test to it and still adopts traditional tool equipment mostly when producing, promptly, and whether the manual button of operator verifies several simple functions, goes to judge through the naked eye observation and tests qualified, and above-mentioned test mode has the possibility that test result erroneous judgement and miss judgement, and then leads to smoke ventilator to have the technical problem that the repair rate is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a testing device and a testing system of an electric control board, which are used for relieving the technical problem of high product repair rate.
In a first aspect, the present invention provides a testing apparatus for an electronic control board, comprising: the system comprises a data acquisition module, a test host and a test load; the test host is respectively connected with the data acquisition module and the electric control board to be tested; the electric control board to be tested is also connected with the data acquisition module and the test load respectively; the electric control board to be tested is used for receiving an action instruction of the test host, sending a control instruction to the test load based on the action instruction so as to drive the test load to execute a target action, and feeding back working state information of the electric control board to be tested to the test host; the data acquisition module is used for receiving an acquisition instruction of the test host and acquiring target test data of the electric control board to be tested based on the acquisition instruction; the test host is used for judging whether the electric control board to be tested passes the test or not based on the target test data and the working state information.
In an optional embodiment, the data acquisition module is further configured to supply power to the electronic control board to be tested, detect whether the connection of the electronic control board to be tested is in place, and send notification information to the test host under the condition that the electronic control board to be tested is in place, so that the test host starts testing.
In an alternative embodiment, the data acquisition module comprises: the data acquisition equipment and the operation clamp; the data acquisition equipment is connected with the operating clamp, and the operating clamp is connected with the electric control board to be tested; the data acquisition equipment is connected with the test host; the operation clamp is used for fixing the electric control board to be tested and is connected with the testing end on the electric control board to be tested through a probe; the data acquisition equipment is used for detecting power supply information of the electric control board to be detected through the probe and determining that the electric control board to be detected is connected in place under the condition that the power supply information is correct; the data acquisition equipment is further used for receiving an acquisition instruction of the test host and acquiring target test data of the electric control board to be tested through the probe based on the acquisition instruction.
In an alternative embodiment, the data acquisition device comprises at least one of: multimeters, power meters, ammeters, thermometers.
In an optional embodiment, the data acquisition device further comprises: a scanning device; the scanning equipment is used for scanning the codes on the electric control board to be tested and sending the obtained code information to the test host.
In an optional embodiment, the electronic control board to be tested is an electronic control board of a variable frequency range hood, and the test load includes at least one of the following: fan, lighting apparatus, push rod motor.
In an optional embodiment, the test apparatus for an electronic control board further includes: a communication module; the communication module is respectively connected with the test host and the cloud server; the test host is further used for uploading the target test data and the working state information to the cloud server through the communication module.
In an optional embodiment, the test apparatus for an electronic control board further includes: an indicator light is operated.
In an optional embodiment, the test apparatus for an electronic control board further includes: a buzzer.
In a second aspect, the present invention provides a test system for an electronic control board, including: a cloud server and a testing device of the electronic control board in any one of the above embodiments; and the cloud server is used for receiving and storing the data uploaded by the testing device of the electric control board.
The utility model provides a testing device of an electric control board, comprising: the system comprises a data acquisition module, a test host and a test load; the test host is respectively connected with the data acquisition module and the electric control board to be tested; the electric control board to be tested is also respectively connected with the data acquisition module and the test load; the electric control board to be tested is used for receiving the action instruction of the test host, sending a control instruction to the test load based on the action instruction so as to drive the test load to execute the target action, and feeding back the working state information of the electric control board to be tested to the test host; the data acquisition module is used for receiving an acquisition instruction of the test host and acquiring target test data of the electric control board to be tested based on the acquisition instruction; the test host is used for judging whether the electric control board to be tested passes the test or not based on the target test data and the working state information. The testing device can change the traditional manual qualitative testing mode into automatic quantitative testing of a machine, thereby ensuring the normal function of each electric control board passing the test and the consistency of performance indexes, further ensuring the running stability and reliability of the whole machine of the product and reducing the repair rate of the product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a block diagram of a testing apparatus for an electronic control board according to an embodiment of the present invention;
fig. 2 is a block diagram of an alternative testing apparatus for an electronic control board according to an embodiment of the present invention;
fig. 3 is a block diagram of a testing apparatus for an alternative electronic control board according to an embodiment of the present invention;
fig. 4 is a system block diagram of a test system of an electronic control board according to an embodiment of the present invention.
Icon: 100-a data acquisition module; 200-a test host; 300-test load; 400-an electric control board to be tested; 101-a data acquisition device; 102-operating the clamp; 500-a communication module; 600-a cloud server; 10-test device of electric control board.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
A variable-frequency range hood is a range hood which can realize stepless regulation of rotating speed and air quantity by applying a variable-frequency control technology of a motor. BLDC (Brushless Direct Current Motor) control, i.e. variable frequency control of the Motor.
At present, the function test of the electric control board of the variable frequency range hood generally adopts the traditional tool clamp, an operator manually presses keys to verify a plurality of simple functions, the test result is manually recorded, and whether the test is qualified is judged through visual observation; the functional Test refers to a Test method for verifying the functional quality of a UUT by acquiring parameters of each state by operating environments (excitation and load) provided for a Test target board (UUT) to work in various design states, and generally refers to a functional Test of a PCBA.
Because the test mode is not automatically judged by a measuring instrument, the possibility of misjudgment and misjudgment is inevitable, and meanwhile, the performance of the variable-frequency electric control board cannot be recorded in detail by manually recording the test result, so that an accurate and rapid means cannot be provided for the quality tracing of the product. After the frequency conversion electric control board with misjudgment and missed judgment is installed on the whole machine, the system is likely to be unstable and out of work at any time, and further the technical problem of high repair rate of products is caused. In view of the above, embodiments of the present invention provide a testing apparatus for an electronic control board, so as to alleviate the above-mentioned technical problems.
Example one
Fig. 1 is a block diagram of a testing apparatus for an electronic control board according to an embodiment of the present invention, and as shown in fig. 1, the testing apparatus for an electronic control board includes: data collection module 100, test host 200, and test load 300.
The test host 200 is respectively connected with the data acquisition module 100 and the electric control board 400 to be tested; the electric control board 400 to be tested is also connected with the data acquisition module 100 and the test load 300, respectively.
The electrical control board 400 to be tested is configured to receive an action command of the test host 200, and send a control command to the test load 300 based on the action command, so as to drive the test load 300 to execute a target action, and feed back working state information of the test load to the test host 200.
The data acquisition module 100 is configured to receive an acquisition instruction of the test host 200, and acquire target test data of the electronic control board 400 to be tested based on the acquisition instruction.
The test host 200 is configured to determine whether the electronic control board 400 to be tested passes the test based on the target test data and the operating state information.
As can be seen from the above description of the structural connection relationship, in order to perform a functional test on the electronic control board 400 to be tested, the testing apparatus for an electronic control board provided in the embodiment of the present invention includes the data acquisition module 100, the testing host 200 and the testing load 300, where the data acquisition module 100 and the electronic control board 400 to be tested are controlled by the testing host 200, and when the testing host 200 determines to start a test, the testing host 200 sends an action instruction to the electronic control board 400 to be tested, and sends an acquisition instruction to the data acquisition module 100. The embodiment of the utility model does not specifically limit the action command and the acquisition command, and a user can set the action command and the acquisition command according to actual test requirements. In addition, in order to support the execution of the acquisition instruction, a corresponding data acquisition device should be arranged in the data acquisition module 100; to support the execution of action instructions, the test load 300 should be equipped with a corresponding execution device.
Further, after receiving the action command, the electronic control board 400 to be tested determines a control command for the test load 300 connected thereto according to the action command, and sends the control command to the test load 300 to drive the test load 300 to execute the target action, and meanwhile, the electronic control board 400 to be tested also feeds back the working state information of itself to the test host 200, where the working state information includes the execution condition of the action command, for example, whether the action is executed in place, and the like.
In the process of executing the action command by the electronic control board 400 to be tested, the data acquisition module 100 acquires the target test data of the electronic control board 400 to be tested according to the acquisition command of the test host 200, and transmits the acquired data to the test host 200.
After receiving the working state information fed back by the electronic control board 400 to be tested and the target test data sent by the data acquisition module 100, the test host 200 stores all the data in time, and judges whether the corresponding test item meets the requirement by using the preset judgment logic and the limit condition, so as to judge whether the electronic control board 400 to be tested passes the test, and meanwhile, the test host 200 can also give a test result and test related information on a display connected with the test host 200.
For example, the action instruction sent by the test host 200 to the electronic control board 400 to be tested is to control the fan to operate in the second gear, and then the electronic control board 400 to be tested receives the action instruction and then sends a corresponding control instruction to the fan in the test load 300, so that the fan starts to operate under the control instruction, and meanwhile, the electronic control board 400 to be tested also feeds back the action execution condition to the test host 200, and it is assumed that the electronic control board 400 to be tested feeds back that the action instruction has been correctly executed. In the process of executing the action command by the electronic control board 400 to be tested, the data acquisition module 100 acquires target test data of the electronic control board 400 to be tested and feeds back the target test data to the test host 200, for example, the target test data at this time is power, after the test host 200 receives the action execution condition and the actual power value of the electronic control board 400 to be tested, after determining that the action is executed, it is further determined whether the actual power value is within a preset power range, and if the action is determined to be within the preset power range, it is determined that the test item passes; and if the power is determined not to be in the preset power range, judging that the test item does not pass. By analogy, under the condition that all the test items pass, the electric control board 400 to be tested is determined to be qualified.
In the process of testing the electric control board 400 to be tested, the test host 200 can also record more relevant test information, such as name, location, time, duration and the like of the processing plant during testing, so as to be retrieved and checked by a user.
The utility model provides a testing device of an electric control board, comprising: a data acquisition module 100, a test host 200 and a test load 300; the test host 200 is respectively connected with the data acquisition module 100 and the electric control board 400 to be tested; the electric control board 400 to be tested is also connected with the data acquisition module 100 and the test load 300 respectively; the electric control board 400 to be tested is used for receiving the action instruction of the test host 200, and sending a control instruction to the test load 300 based on the action instruction so as to drive the test load 300 to execute the target action and feed back the working state information of the electric control board to be tested to the test host 200; the data acquisition module 100 is configured to receive an acquisition instruction of the test host 200, and acquire target test data of the electronic control board 400 to be tested based on the acquisition instruction; the test host 200 is configured to determine whether the electronic control board 400 to be tested passes the test based on the target test data and the operating state information. The testing device can change the traditional manual qualitative testing mode into automatic quantitative testing of a machine, thereby ensuring the normal function of each electric control board passing the test and the consistency of performance indexes, further ensuring the running stability and reliability of the whole machine of the product and reducing the repair rate of the product.
In an optional embodiment, the data acquisition module 100 is further configured to supply power to the electronic control board 400 to be tested, detect whether the connection of the electronic control board 400 to be tested is in place, and send notification information to the test host 200 when the electronic control board 400 to be tested is in place, so that the test host 200 starts testing.
Specifically, in order to avoid that the test host 200 does not fail due to the connection problem of the device or the power supply after the test is started, the data acquisition module 100 further provides power for the electronic control board 400 to be tested, and detects whether the electronic control board 400 is connected in place, and after it is determined that the electronic control board 400 to be tested has completed the preparation before the test, the data acquisition module 100 sends notification information to the test host 200, so that the test host 200 starts the test.
In an alternative embodiment, as shown in fig. 2, the data acquisition module 100 includes: a data acquisition device 101 and an operating fixture 102.
The data acquisition equipment 101 is connected with the operation clamp 102, and the operation clamp 102 is connected with the electric control board 400 to be tested; the data acquisition device 101 is connected to a test host 200.
The operation fixture 102 is used for fixing the electric control board 400 to be tested and is connected with the testing end on the electric control board 400 to be tested through the probe.
The data acquisition device 101 is configured to detect power supply information of the electronic control board 400 to be tested through the probe, and determine that the electronic control board 400 to be tested is connected in place when the power supply information is determined to be correct.
The data acquisition device 101 is further configured to receive an acquisition instruction of the test host 200, and acquire target test data of the electronic control board 400 to be tested through the probe based on the acquisition instruction.
Specifically, in the embodiment of the present invention, the data acquisition module 100 includes a data acquisition device 101 and an operation clamp 102, and a test probe is further disposed on the operation clamp 102, so that the operation clamp 102 is used to fix the electronic control board 400 to be tested, and on the other hand, provides a test connection between the electronic control board 400 to be tested and the data acquisition device 101. The embodiment of the utility model does not specifically limit the number of the test probes, and the user can set the test probes according to the actual test requirements, and in addition, the test ends on the electric control board 400 to be tested are also selected according to the actual test requirements.
After the test environment is built, the data acquisition equipment 101 supplies power to the electric control board 400 to be tested, detects whether the electric control board 400 to be tested is normally powered on or not through the probe, and informs the test host 200 to start testing under the condition that the electric control board 400 to be tested is determined to be connected without errors. Next, the data acquisition device 101 will acquire target test data of the electronic control board 400 to be tested by operating the probes on the fixture 102 under the acquisition instruction of the test host 200.
In an alternative embodiment, the data acquisition device 101 comprises at least one of: multimeters, power meters, ammeters, thermometers. The functions of the above devices are not described in detail in the embodiments of the present invention, and the test host 200 can obtain test data of the to-be-tested electronic control board 400 by using the data acquisition device 101.
In an optional embodiment, the data acquisition device 101 further comprises: a scanning device.
The scanning device is configured to scan a code on the electronic control board 400 to be tested, and send the obtained code information to the test host 200.
Specifically, in order to facilitate product tracing, a unique code may be further pasted on each to-be-tested electronic control board 400, and when the to-be-tested electronic control board 400 is correctly placed on the operation fixture 102, the scanning device may scan the code on the to-be-tested electronic control board 400, and then send the code to the test host 200. The user may also add the acquired encoded information to the conditions under which the test is started. That is, the condition for starting the test may be to determine that the electronic control board 400 to be tested is normally powered on and acquire the encoding information of the electronic control board 400 to be tested.
In an alternative embodiment, the electric control board 400 to be tested is an electric control board of a variable frequency range hood, and the test load 300 includes at least one of the following components: fan, lighting apparatus, push rod motor.
The testing device of the electric control board provided by the embodiment of the utility model can be theoretically applied to various products, if the electric control board 400 to be tested is the electric control board of the variable-frequency range hood, correspondingly, in order to perform the function test on the electric control board, the test load 300 connected with the electric control board can be one or more of a fan, lighting equipment and a push rod motor, and other equipment can be additionally arranged according to the actual test requirement.
In an alternative embodiment, as shown in fig. 3, the test apparatus for an electronic control board further includes: a communication module 500.
The communication module 500 is connected to the test host 200 and the cloud server 600, respectively.
The test host 200 is further configured to upload the target test data and the working status information to the cloud server 600 through the communication module 500.
It is described above that the test host 200 can locally store all the data received by the test host, further, if the communication module 500 is additionally arranged in the test apparatus, the test host 200 can upload the data to the cloud server 600 synchronously or asynchronously through the communication module 500, and then a user can log in the cloud server 600 through a dedicated website interface to query the test data of each electronic control board 400 to be tested at any time and any place by using a computer, a mobile phone and other networking devices, and the cloud server 600 can provide more extended functions, such as statistics, analysis and the like, so as to help the user to better track and control the quality condition and the variation trend of the electronic control board 400 to be tested.
In an alternative embodiment, the test device of the electronic control board further comprises: an indicator light is operated.
In order to facilitate observation of a tester in a product testing process, a multicolor operation indicator lamp can be arranged in the testing device, for example, if the electric control board 400 to be tested passes the test, the indicator lamp displays green, and if the test does not pass the test, the indicator lamp displays red.
In an alternative embodiment, the test device of the electronic control board further comprises: a buzzer.
No matter whether the test result is displayed through the display or the result indication is carried out through the operation indicating lamp, the test feedback can be only visually provided, in order to further enhance the test guidance, a buzzer can be further arranged in the test device, different sound feedbacks are further provided when different test results are obtained, or the alarm is only carried out when the test of the electric control board 400 to be tested is failed.
In conclusion, utilize the utility model discloses the testing arrangement of automatically controlled board that provides can change the test mode of traditional manual nature into the automatic quantitative test of machine to guaranteed that every is normal through the function of the automatically controlled board of test, and performance index all is in the design range, and then guaranteed performance index's uniformity, and then ensured the operating stability and the reliability of product complete machine, effectively reduced the product and reprocessed the rate.
The inventor tests the testing device provided by the embodiment of the utility model, and finds that after the electric control board of the variable frequency range hood is subjected to functional test by using the testing device, the after-sale quality repair rate of the electric control board of the variable frequency range hood can be reduced to be lower than 100ppm (the after-sale failure rate of the electric control board of the variable frequency range hood without the testing device can reach more than 1000 ppm).
Example two
Fig. 4 is a system block diagram of a test system of an electronic control board according to an embodiment of the present invention, and as shown in fig. 4, the test system of the electronic control board includes: the cloud server 600 and the testing apparatus 10 for an electronic control board according to any one of the above embodiments.
The cloud server 600 is configured to receive and store data uploaded by the test device 10 of the electronic control board.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A test device for an electronic control board, comprising: the system comprises a data acquisition module, a test host and a test load;
the test host is respectively connected with the data acquisition module and the electric control board to be tested; the electric control board to be tested is also connected with the data acquisition module and the test load respectively;
the electric control board to be tested is used for receiving an action instruction of the test host, sending a control instruction to the test load based on the action instruction so as to drive the test load to execute a target action, and feeding back working state information of the electric control board to be tested to the test host;
the data acquisition module is used for receiving an acquisition instruction of the test host and acquiring target test data of the electric control board to be tested based on the acquisition instruction;
the test host is used for judging whether the electric control board to be tested passes the test or not based on the target test data and the working state information.
2. The device for testing an electronic control board according to claim 1,
the data acquisition module is also used for supplying power to the electric control board to be tested, detecting whether the electric control board to be tested is connected in place or not, and sending notification information to the test host under the condition that the electric control board to be tested is connected in place so as to enable the test host to start testing.
3. The device for testing an electronic control board according to claim 2, wherein the data acquisition module comprises: the data acquisition equipment and the operation clamp;
the data acquisition equipment is connected with the operating clamp, and the operating clamp is connected with the electric control board to be tested; the data acquisition equipment is connected with the test host;
the operation clamp is used for fixing the electric control board to be tested and is connected with the testing end on the electric control board to be tested through a probe;
the data acquisition equipment is used for detecting power supply information of the electric control board to be detected through the probe and determining that the electric control board to be detected is connected in place under the condition that the power supply information is correct;
the data acquisition equipment is further used for receiving an acquisition instruction of the test host and acquiring target test data of the electric control board to be tested through the probe based on the acquisition instruction.
4. The electrical control board testing device of claim 3, wherein the data acquisition equipment comprises at least one of: multimeters, power meters, ammeters, thermometers.
5. The device for testing an electronic control board according to claim 4, wherein the data acquisition apparatus further comprises: a scanning device;
the scanning equipment is used for scanning the codes on the electric control board to be tested and sending the obtained code information to the test host.
6. The testing device of the electric control board according to claim 1, wherein the electric control board to be tested is an electric control board of a variable frequency range hood, and the test load comprises at least one of the following: fan, lighting apparatus, push rod motor.
7. The device for testing an electronic control board according to claim 1, further comprising: a communication module;
the communication module is respectively connected with the test host and the cloud server;
the test host is further used for uploading the target test data and the working state information to the cloud server through the communication module.
8. The device for testing an electronic control board according to claim 1, further comprising: an indicator light is operated.
9. The device for testing an electronic control board according to claim 1, further comprising: a buzzer.
10. A test system for an electronic control board, the test system comprising: a cloud server and a testing device of the electric control board of any one of the claims 1-9;
and the cloud server is used for receiving and storing the data uploaded by the testing device of the electric control board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122894126.6U CN216351086U (en) | 2021-11-22 | 2021-11-22 | Test device and system of electric control board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122894126.6U CN216351086U (en) | 2021-11-22 | 2021-11-22 | Test device and system of electric control board |
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| CN216351086U true CN216351086U (en) | 2022-04-19 |
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| CN202122894126.6U Active CN216351086U (en) | 2021-11-22 | 2021-11-22 | Test device and system of electric control board |
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