CN220323781U - Pipeline fan drive control panel production testing arrangement and system - Google Patents
Pipeline fan drive control panel production testing arrangement and system Download PDFInfo
- Publication number
- CN220323781U CN220323781U CN202321844674.0U CN202321844674U CN220323781U CN 220323781 U CN220323781 U CN 220323781U CN 202321844674 U CN202321844674 U CN 202321844674U CN 220323781 U CN220323781 U CN 220323781U
- Authority
- CN
- China
- Prior art keywords
- control board
- module
- pipeline fan
- interface
- drive control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 59
- 238000001514 detection method Methods 0.000 claims abstract description 94
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012905 input function Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model belongs to the field of product testing, and particularly relates to a production testing device and system for a pipeline fan driving control board. The device comprises: the electronic load device comprises a power supply module, a main control module, an electronic load, a detection module and a display input module; the power supply module is used for providing power supply for the main control module; the main control module is used for communicating with the electronic load, the detection module, the display input module and the pipeline fan driving control board; the electronic load is connected with the main control module and is used for simulating the load; the detection module is used for detecting the electrical data input to the pipeline fan driving control board, processing the electrical data and sending the data to the main control module; the display input module is used for inputting data and displaying output results of the production test. The utility model automatically detects the functional parameters of the pipeline fan drive control board, does not need to be manually connected with various detection measuring instruments, and solves the problems that various detection devices and a large amount of labor cost are required during the test.
Description
Technical Field
The utility model belongs to the field of product testing, and particularly relates to a production testing device and system for a pipeline fan driving control board.
Background
The pipeline fan drive control board is a circuit board used for controlling and driving a motor in the direct-current variable-frequency pipeline fan, and has the main functions of controlling the working state of the direct-current variable-frequency pipeline fan, including starting, stopping, adjusting parameters such as motor rotating speed and air quantity, and the like, and can communicate with other equipment through an interface, transmit and receive data, and realize various control and monitoring functions. The performance and quality of the pipeline fan drive control board directly influence the running efficiency, stability and service life of the direct-current variable-frequency pipeline fan. Therefore, production testing of the duct fan drive control board is required.
When in testing, the voltage output precision and the load capacity of the pipeline fan driving control board are required to be tested, and the current testing mode is to use an electronic load test and manually record test control and load voltage values to judge whether the requirements are met; when a target PWM duty ratio is set for the VSP by using a PWM signal generator, the fan operates to a specific rotating speed, a frequency meter is used for detecting the frequency corresponding to the specific rotating speed output by the FG rotating speed signal output interface, and the operating rotating speed of the pipeline fan is calculated to judge whether the operating speed meets the requirement or not; when the running value of the pipeline fan is a specific rotating speed, an electric parameter measuring instrument is also required to be used for measuring whether the running power at the rotating speed meets the requirement.
Such a test mode requires various detection devices and a lot of labor costs.
Disclosure of Invention
The embodiment of the utility model aims to provide a production testing device for a pipeline fan driving control board, which aims to solve the problems that a plurality of detection devices and a large amount of labor cost are required in the current testing mode.
The embodiment of the utility model is realized in such a way that the pipeline fan drive control board production test device comprises: the electronic load device comprises a power supply module, a main control module, an electronic load, a detection module and a display input module;
the power supply module is used for providing power supply for the main control module;
the main control module is used for communicating with the electronic load, the detection module, the display input module and the pipeline fan driving control board;
the electronic load is connected with the main control module and is used for simulating a load;
the detection module is used for detecting the electrical data input to the pipeline fan driving control board, processing the electrical data and sending the data to the main control module;
the display input module is used for inputting data and displaying output results of the production test.
Preferably, the main control module comprises an MCU chip;
the MCU chip is provided with a control signal detection interface, an electronic load control interface, a current detection interface, a voltage detection interface and a display input interface;
the control signal detection interface is connected with the pipeline fan driving control board and is used for communicating with the pipeline fan driving control board;
the electronic load control interface is connected with the electronic load and is used for controlling the electronic load;
the current detection interface is connected with the detection module and is used for receiving current data of the detection module;
the voltage detection interface is connected with the detection module and is used for receiving voltage data of the detection module;
the display input interface is connected with the display input module and is used for communicating with the display input module.
Preferably, the control signal detection interface comprises a voltage signal detection interface, an FG rotation speed signal detection interface and a VSP debugging/PWM output interface, and is used for communicating with a pipeline fan driving control board;
the voltage signal detection interface is connected with the voltage output interface of the pipeline fan driving control board and is used for detecting the output voltage of the pipeline fan driving control board;
the FG rotating speed signal detection interface is connected with the FG rotating speed signal output interface of the pipeline fan driving control board and is used for detecting the output rotating speed of the pipeline fan driving control board;
the VSP debugging/PWM output interface is connected with a VSP input interface of the pipeline fan driving control board and is used for outputting a VSP speed regulation signal.
Preferably, the input end of the electronic load is connected with the output end of the pipeline fan driving control board, and the communication end is connected with the electronic load control interface of the MCU chip.
Preferably, the detection module comprises a current sensor and a voltage sensor;
the through hole in the middle of the current sensor is penetrated by an L line, the output end of the through hole is connected with the current detection interface of the MCU chip, and the current sensor is used for detecting the current input to the pipeline fan drive control board, processing the current and sending data to the MCU chip;
the input end of the voltage sensor is connected with an AC power supply, the output end of the voltage sensor is connected with a voltage detection interface of the MCU chip, and the voltage sensor is used for detecting the voltage input to a pipeline fan drive control board, processing the voltage and sending data to the MCU chip.
Preferably, the display input module comprises a display module and an input module;
the display module is connected with the display input interface of the MCU chip and used for displaying the test result;
the input module is connected with the display input interface of the MCU chip and is used for inputting data.
Preferably, the display module comprises a display and an indicator light;
the display is connected with the display input interface of the MCU chip and used for displaying electric data;
the indicator lamp is connected with the display input interface of the MCU chip and is used for enabling a user to intuitively observe the test result of the corresponding item.
Another object of the embodiment of the present utility model is to provide a production test system for a pipeline fan driving control board, which includes a pipeline fan, a pipeline fan driving control board, and a production test device for a pipeline fan driving control board described in the above embodiment.
The production testing device for the pipeline fan drive control board provided by the embodiment of the utility model detects the output voltage of the pipeline fan drive control board in an idle state and a load state through the MCU chip, outputs a specific PWM speed regulation signal to a VSP input interface of the pipeline fan drive control board, detects the rotating speed frequency of an FG rotating speed signal output interface of the drive control board, automatically calculates the running rotating speed of the pipeline fan, detects real-time current and real-time voltage, and calculates the real-time power of the pipeline fan drive control board when the pipeline fan reaches the specific rotating speed.
The production testing device for the pipeline fan driving control board provided by the embodiment of the utility model automatically detects the pipeline fan driving control board without manually accessing various detection measuring instruments, thereby solving the problems that various detection devices and a large amount of labor cost are required during testing.
Drawings
FIG. 1 is a block diagram of a production test device for a pipeline fan drive control board according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a production test device for a driving control board of a pipeline fan according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a production test system for a driving control board of a pipeline fan according to an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Specific implementations of the utility model are described in detail below in connection with specific embodiments.
As shown in fig. 1, a structural block diagram of a production test device for a pipeline fan driving control board provided by an embodiment of the present utility model, where the production test device for the pipeline fan driving control board includes: the electronic load device comprises a power supply module, a main control module, an electronic load, a detection module and a display input module;
the power supply module is used for providing power supply for the main control module;
the main control module is used for communicating with the electronic load, the detection module, the display input module and the pipeline fan driving control board;
the electronic load is connected with the main control module and is used for simulating a load;
the detection module is used for detecting the electrical data input to the pipeline fan driving control board, processing the electrical data and sending the data to the main control module;
the display input module is used for inputting data and displaying output results of the production test.
In the embodiment of the utility model, the power supply module can be an adapter or a power supply circuit embedded in the main control module, and the power supply is used for supplying power to the MCU chip.
In the embodiment of the utility model, the communication between the main control module and the electronic load means that the MCU chip controls the electronic load to start.
In the embodiment of the utility model, the communication between the main control module and the detection module means that the signal of the detection module is received.
In an embodiment of the present utility model, the main control module communicating with the display input module includes sending data to the display input module and receiving data from the display input module.
In the embodiment of the utility model, the main control module is communicated with the pipeline fan driving control board to send signals to the pipeline fan driving control board and receive signals of the pipeline fan driving control board.
In the embodiment of the utility model, the electronic load can be an electronic load instrument or an electronic load circuit.
In the embodiment of the utility model, the electronic load is a 10V signal electronic dummy load.
In the embodiments of the present utility model, the electrical data refers to current and voltage.
In the embodiment of the present utility model, the input data refers to a value of a duty ratio of the input PWM.
In the embodiment of the utility model, the display production test result comprises a voltage value, a fan rotating speed value, a real-time operation power value and a lighting indication of whether the detection result passes.
In the embodiment of the utility model, three items are tested by the pipeline fan drive control board production test device: firstly, detecting output voltage of a pipeline fan driving control board; secondly, after a specific PWM speed regulation signal is input, detecting the rotating speed of the pipeline fan; and thirdly, inputting a specific PWM speed regulation signal, and detecting real-time current and real-time power of a pipeline fan driving control board after the pipeline fan reaches the corresponding rotating speed.
The production testing device for the pipeline fan driving control board provided by the embodiment of the utility model automatically detects the pipeline fan driving control board without manually accessing various detection measuring instruments, thereby solving the problems that various detection devices and a large amount of labor cost are required during testing.
As shown in fig. 2, as a preferred embodiment of the present utility model, the main control module includes an MCU chip;
the MCU chip is provided with a control signal detection interface, an electronic load control interface, a current detection interface, a voltage detection interface and a display input interface;
the control signal detection interface is connected with the pipeline fan driving control board and is used for communicating with the pipeline fan driving control board;
the electronic load control interface is connected with the electronic load and is used for controlling the electronic load;
the current detection interface is connected with the detection module and is used for receiving current data of the detection module;
the voltage detection interface is connected with the detection module and is used for receiving voltage data of the detection module;
the display input interface is connected with the display input module and is used for communicating with the display input module.
In the embodiment of the utility model, the control signal detection interface of the MCU chip detects the output voltage of the pipeline fan drive control board, the output voltage of the voltage output by the pipeline fan drive control board after being loaded and the rotating speed frequency of the FG rotating speed signal output interface of the pipeline fan drive control board.
In the embodiment of the utility model, the control signal detection interface of the MCU chip outputs a specific PWM speed regulation signal.
In the embodiment of the utility model, the electronic load control interface of the MCU chip controls the electronic load to start, so that the voltage output by the pipeline fan drive control panel is input to the electronic load.
As shown in fig. 3, as a preferred embodiment of the present utility model, the control signal detection interface includes a voltage signal detection interface, an FG speed signal detection interface, and a VSP debug/PWM output interface, for communicating with a duct fan drive control board;
the voltage signal detection interface is connected with the voltage output interface of the pipeline fan driving control board and is used for detecting the output voltage of the pipeline fan driving control board;
the FG rotating speed signal detection interface is connected with the FG rotating speed signal output interface of the pipeline fan driving control board and is used for detecting the output rotating speed of the pipeline fan driving control board;
the VSP debugging/PWM output interface is connected with a VSP input interface of the pipeline fan driving control board and is used for outputting a VSP speed regulation signal.
In the embodiment of the utility model, the output voltage of the pipeline fan driving control board and the output voltage of the pipeline fan driving control board after the voltage output by the pipeline fan driving control board is loaded are detected by the voltage signal detection interface.
In the embodiment of the utility model, the FG rotation speed signal detection interface detects the rotation speed frequency of the FG rotation speed signal output interface of the pipeline fan drive control panel, and the FG rotation speed signal detection interface is used for detecting the rotation speed frequency of the FG rotation speed signal output interface of the pipeline fan drive control panel
FG rotation speed signal output interface 60/pole pair number of pipeline fan
The rotational speed of the pipeline fan can be obtained.
In the embodiment of the utility model, after the VSP input interface of the pipeline fan control board receives a specific PWM speed regulation signal output by the VSP debugging/PWM output interface, the pipeline fan control board controls the rotating speed of the pipeline fan, and at the moment, the FG rotating speed signal output interface outputs the rotating speed frequency corresponding to the rotating speed of the pipeline fan.
As shown in fig. 3, as a preferred embodiment of the present utility model, the input end of the electronic load is connected to the output end of the pipeline fan driving control board, and the communication end is connected to the electronic load control interface of the MCU chip.
In the embodiment of the utility model, the electronic load control interface of the MCU chip controls the electronic load to start, the input end of the electronic load is communicated with the output end of the pipeline fan drive control board, and the voltage signal detection interface of the MCU chip detects the output voltage of the pipeline fan drive control board after the output voltage is loaded.
As shown in fig. 3, as a preferred embodiment of the present utility model, the detection module includes a current sensor and a voltage sensor;
the through hole in the middle of the current sensor is penetrated by an L line, the output end of the through hole is connected with the current detection interface of the MCU chip, and the current sensor is used for detecting the current input to the pipeline fan drive control board, processing the current and sending data to the MCU chip;
the input end of the voltage sensor is connected with an AC power supply, the output end of the voltage sensor is connected with a voltage detection interface of the MCU chip, and the voltage sensor is used for detecting the voltage input to a pipeline fan drive control board, processing the voltage and sending data to the MCU chip.
In the embodiment of the utility model, the current sensor detects real-time current output to the pipeline fan drive control board.
In the embodiment of the utility model, the voltage sensor detects real-time voltage output to the pipeline fan drive control board.
In the embodiment of the utility model, the real-time running power of the pipeline fan driving control panel is obtained by multiplying the real-time current and the real-time voltage.
As shown in fig. 3, as a preferred embodiment of the present utility model, the display input module includes a display module and an input module;
the display module is connected with the display input interface of the MCU chip and used for displaying the test result;
the input module is connected with the display input interface of the MCU chip and is used for inputting data.
In the embodiment of the utility model, the display module and the input module can be combined into the same module, for example, a liquid crystal screen with an input function.
As shown in fig. 3, as another preferred embodiment of the present utility model, the display module includes a display and an indicator lamp;
the display is connected with the display input interface of the MCU chip and used for displaying electric data;
the indicator lamp is connected with the display input interface of the MCU chip and is used for enabling a user to intuitively observe the test result of the corresponding item.
In the embodiment of the utility model, the display and the indicator light can be the same device, for example, the effect of the indicator light is simulated on the display through software.
In the embodiment of the utility model, the number of the indicator lamps can be one or three, each pair of indicator lamps comprises a red light and a green light, if only one pair of indicator lamps is arranged, the indicator lamps can be turned off after each detection item is finished, and if three pairs of indicator lamps are arranged, each detection item corresponds to one pair of indicator lamps.
In the embodiment of the utility model, the MCU chip detects the voltage output by the voltage output interface of the pipeline fan drive control board and displays the detected voltage on the display.
In the embodiment of the utility model, after the voltage signal detection interface of the MCU chip detects the output voltage of the pipeline fan drive control board after the output voltage is loaded, the MCU chip judges whether the output voltage meets the requirements, if so, the indicator lights the green light, and if not, the indicator lights the red light.
In the embodiment of the utility model, after the MCU chip outputs a specific PWM speed regulation signal to the VSP input interface of the pipeline fan control board, the rotating speed of the pipeline fan is calculated according to the rotating speed frequency of the FG rotating speed signal output interface of the pipeline fan control board, the calculated rotating speed of the pipeline fan is displayed on a display, whether the rotating speed of the pipeline fan meets the requirements or not is judged, if the rotating speed meets the requirements, the indicator lights turn on green lights, and if the rotating speed does not meet the requirements, the indicator lights turn on red lights.
In the embodiment of the utility model, the current detection interface and the voltage detection interface of the MCU chip detect real-time current and real-time voltage output to the pipeline fan drive control board, calculate real-time running power, and display the real-time running power on a display when the MCU chip outputs a specific PWM speed regulation signal and the rotating speed of the pipeline fan meets the requirement.
In the embodiment of the utility model, the MCU chip judges whether the real-time current and the real-time running power of the pipeline fan driving control board meet the requirements, if so, the indicator lights illuminate green lights, and if not, the indicator lights illuminate red lights.
In the embodiment of the utility model, when the three detection items are all lighted with green lights, the detection items indicate that the pipeline fan drive control panel passes the detection, and the related data are displayed on the display.
As shown in fig. 3, the embodiment of the utility model further provides a production test system for a pipeline fan driving control board, which comprises a pipeline fan, a pipeline fan driving control board and a production test device for the pipeline fan driving control board.
In the embodiment of the utility model, the pipeline fan is used for simulating a real running environment, and the input end of the pipeline fan is connected with the three-phase output end of the pipeline fan driving plate.
In the embodiment of the utility model, the pipeline fan driving control board is a test object.
The pipeline fan drive control board production test system provided by the embodiment of the utility model is a test environment for testing the pipeline fan drive control board by the pipeline fan drive control board production test device, can realize automatic detection of the pipeline fan drive control board, does not need to be manually connected with various detection and measurement instruments, and solves the problems that various detection devices and a large amount of labor cost are needed during testing.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. The utility model provides a pipeline fan drive control panel production testing arrangement which characterized in that, pipeline fan drive control panel production testing arrangement includes: the electronic load device comprises a power supply module, a main control module, an electronic load, a detection module and a display input module;
the power supply module is used for providing power supply for the main control module;
the main control module is used for communicating with the electronic load, the detection module, the display input module and the pipeline fan driving control board;
the electronic load is connected with the main control module and is used for simulating a load;
the detection module is used for detecting the electrical data input to the pipeline fan driving control board, processing the electrical data and sending the data to the main control module;
the display input module is used for inputting data and displaying output results of the production test.
2. The production test device of a pipeline fan drive control board according to claim 1, wherein the main control module comprises an MCU chip;
the MCU chip is provided with a control signal detection interface, an electronic load control interface, a current detection interface, a voltage detection interface and a display input interface;
the control signal detection interface is connected with the pipeline fan driving control board and is used for communicating with the pipeline fan driving control board;
the electronic load control interface is connected with the electronic load and is used for controlling the electronic load;
the current detection interface is connected with the detection module and is used for receiving current data of the detection module;
the voltage detection interface is connected with the detection module and is used for receiving voltage data of the detection module;
the display input interface is connected with the display input module and is used for communicating with the display input module.
3. The ducted fan drive control board production test apparatus of claim 2, wherein the control signal detection interface comprises a voltage signal detection interface, an FG speed signal detection interface, a VSP debug/PWM output interface for communicating with the ducted fan drive control board;
the voltage signal detection interface is connected with the voltage output interface of the pipeline fan driving control board and is used for detecting the output voltage of the pipeline fan driving control board;
the FG rotating speed signal detection interface is connected with the FG rotating speed signal output interface of the pipeline fan driving control board and is used for detecting the output rotating speed of the pipeline fan driving control board;
the VSP debugging/PWM output interface is connected with a VSP input interface of the pipeline fan driving control board and is used for outputting a VSP speed regulation signal.
4. The pipeline fan drive control board production test device of claim 2, wherein the input end of the electronic load is connected with the output end of the pipeline fan drive control board, and the communication end is connected with the electronic load control interface of the MCU chip.
5. The ducted fan drive control board production test apparatus of claim 2, wherein the detection module comprises a current sensor and a voltage sensor;
the through hole in the middle of the current sensor is penetrated by an L line, the output end of the through hole is connected with the current detection interface of the MCU chip, and the current sensor is used for detecting the current input to the pipeline fan drive control board, processing the current and sending data to the MCU chip;
the input end of the voltage sensor is connected with an AC power supply, the output end of the voltage sensor is connected with a voltage detection interface of the MCU chip, and the voltage sensor is used for detecting the voltage input to a pipeline fan drive control board, processing the voltage and sending data to the MCU chip.
6. The ducted fan drive control panel production test apparatus of claim 2, wherein the display input module comprises a display module and an input module;
the display module is connected with the display input interface of the MCU chip and used for displaying the test result;
the input module is connected with the display input interface of the MCU chip and is used for inputting data.
7. The ducted fan drive control panel production test apparatus of claim 6, wherein the display module comprises a display and an indicator light;
the display is connected with the display input interface of the MCU chip and used for displaying electric data;
the indicator lamp is connected with the display input interface of the MCU chip and is used for enabling a user to intuitively observe the test result of the corresponding item.
8. A pipeline fan drive control board production test system, characterized in that the pipeline fan drive control board production test system comprises a pipeline fan, a pipeline fan drive control board and a pipeline fan drive control board production test device according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321844674.0U CN220323781U (en) | 2023-07-13 | 2023-07-13 | Pipeline fan drive control panel production testing arrangement and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321844674.0U CN220323781U (en) | 2023-07-13 | 2023-07-13 | Pipeline fan drive control panel production testing arrangement and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220323781U true CN220323781U (en) | 2024-01-09 |
Family
ID=89422750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321844674.0U Active CN220323781U (en) | 2023-07-13 | 2023-07-13 | Pipeline fan drive control panel production testing arrangement and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220323781U (en) |
-
2023
- 2023-07-13 CN CN202321844674.0U patent/CN220323781U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103557880B (en) | A kind of automobile combination instrument test device | |
| CN201285435Y (en) | DC motor debugging apparatus | |
| CN103149385A (en) | Portable detection system of shaft end speed sensor of locomotive | |
| CN104424067A (en) | Fan module testing method and system | |
| CN107315122B (en) | Fill electric pile testing arrangement | |
| CN114295906A (en) | Portable charging pile operation and maintenance patrol instrument, intelligent client, operation and maintenance method and system | |
| CN101762787A (en) | Tester of program guidance (PG) motor | |
| CN201212955Y (en) | Detection device for electronic control unit | |
| CN220323781U (en) | Pipeline fan drive control panel production testing arrangement and system | |
| CN210665797U (en) | Portable detection device for speed sensor of CRH3 motor train unit | |
| CN107526354B (en) | Automatic test method and test device for electric vehicle controller | |
| CN207067355U (en) | A kind of intelligent electric machine performance test apparatus | |
| CN101650400A (en) | Testing equipment of generating set control screen | |
| CN207096388U (en) | A kind of drive circuit detecting system | |
| CN216248910U (en) | Fault detection equipment for electric valve control system | |
| CN112901546B (en) | Indirect measuring method and device for performance of electric control silicone oil fan | |
| CN103792938A (en) | Complete machine inspection platform for controller of electric car | |
| CN201786629U (en) | Fan plate testing device | |
| CN212964027U (en) | Engine pedestal running-in control and detection system | |
| CN112722323A (en) | Rotorcraft avionics system fault detection device | |
| CN215493670U (en) | Subway rotation speed sensor testing and metering device | |
| CN108469810A (en) | Controller of current vortex retarder | |
| CN214224540U (en) | Vehicle instrument system testing device | |
| CN214585774U (en) | Automatic test system suitable for intelligent ventilation equipment | |
| CN203773349U (en) | Whole machine test platform used for electric automobile controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |