CN217305757U - Frequency converter control panel test system with recording and displaying functions - Google Patents
Frequency converter control panel test system with recording and displaying functions Download PDFInfo
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- CN217305757U CN217305757U CN202221044002.7U CN202221044002U CN217305757U CN 217305757 U CN217305757 U CN 217305757U CN 202221044002 U CN202221044002 U CN 202221044002U CN 217305757 U CN217305757 U CN 217305757U
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Abstract
The utility model discloses a converter control panel test system with record and demonstration function, include: the testing device is used for connecting the frequency converter control board to be tested and at least comprises a testing main control board and a display screen HMI; the display screen HMI is connected with the test main control board, and the test main control board and the display screen HMI are simultaneously connected with a communication port of the control board of the tested frequency converter; and the upper computer is connected with the main control board of the testing device. The defects that an existing test system has a missing detection risk and has no recording function, and the test is not precise due to subjective judgment of an operator, and the test process is inconvenient are overcome.
Description
Technical Field
The utility model belongs to the technical field of the frequency conversion test, concretely relates to converter control panel test system among refrigeration heat exchanger group.
Background
With economic development, energy efficiency and environmental protection are more and more concerned. In order to save energy and reduce emission and pursue energy efficiency ratio, the central air conditioner tends to be frequency conversion more and more, and the application of the frequency converter is more and more. The main function of a power panel in the frequency converter control panel is to provide a stable low-voltage direct-current power supply for each control panel in the frequency converter, the main function of a main control panel is to detect input and output currents, and the main function of a drive board is to drive and output an IGBT (insulated gate bipolar transistor) and measure input and output voltages; the frequency converter power supply board provides a unique way for controlling voltage of the frequency converter, the main control board is a frequency converter control core, the driving board bears the function of driving the IGBT, and the interface board is used for interconnecting connecting lines among the control boards; all control panels need to be subjected to functional testing before leaving factories to ensure the production and manufacturing quality, and the existing frequency converter control panel testing method is low in efficiency, large in testing workload and incomplete.
The prior patent is as follows: 201822149102.6 name: a conventional test system scheme for a frequency converter control panel test system display mainly comprises: switching power supply, wait to examine control panel, button, display screen, testing arrangement platform. This type of test system suffers from the following problems:
the whole inspection and test process needs to be operated by an inspector for multiple times, so that the omission is easy to occur, the test process needs to be carried out by a universal meter or an oscilloscope, and the operation of the inspector is too dependent;
the test data is not stored and is not counted, and the later tracing effect on the product quality cannot be achieved;
the voltage output is judged by the luminous intensity of the diode, and the low-frequency and high-frequency PWM waves are also judged by the on-off conversion of the diode, so that the method is inconvenient and is not strict depending on the subjective judgment of an operator.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to having to miss to examine the risk and do not have the recording function to current test system, rely on the subjective judgement of operator to cause the test result inaccuracy that is not rigorous, the inconvenient defect of testing process provides a converter control panel test system with record and demonstration function.
In order to solve the above problem, the utility model adopts the following technical scheme:
a frequency converter control panel test system with recording and displaying functions is characterized by comprising:
the testing device is used for connecting the tested frequency converter control board and at least comprises a testing main control board and a display screen HMI; the display screen HMI is connected with the test main control board, and the test main control board and the display screen HMI are simultaneously connected with a communication port of the control board of the tested frequency converter;
and the upper computer is connected with the main control board of the testing device.
In the technical scheme, the testing device also comprises a testing check board, the testing main control board is connected with the AI/O port of the testing check board, and the AI/O port of the testing check board is simultaneously connected with the AI/O port of the control board of the tested frequency converter.
In the above technical solution, the test proof board further includes a DI/O port and a drive conversion module, and the DI/O port and the drive conversion module of the test proof board are respectively and correspondingly connected to the DI/O port and the drive port of the tested frequency converter control board.
Among the above-mentioned technical scheme, the test inspection board still includes voltage sampling board, and voltage sampling board is connected with the voltage detection point of being surveyed the converter control panel.
In the above technical scheme, the voltage sampling board is provided with a PCB board probe point sampling probe.
In the technical scheme, the testing device also comprises an analog module board, wherein the analog module board comprises a temperature analog module, a voltage analog module, a current analog module and a power supply module; the temperature simulation module is connected with a temperature port of the tested frequency converter control panel, the voltage simulation module is connected with a voltage port of the tested frequency converter control panel, the current simulation module is connected with a current port of the tested frequency converter control panel, and the power supply module is connected with a power supply port of the tested frequency converter control panel.
In the above technical solution, the power module ports are respectively set as control panel power supplies 5V, -15V, +15V,24V,6V, GND.
In the above technical scheme, the AI/O port board is connected with the control panel power supply 5V.
In the above technical solution, the test main control board chip model is: STM32F407VGT 6.
In the above technical solution, the upper computer is a computer having a data storage device, an input device, and a calculation module.
The utility model discloses a theory of operation as follows:
a drive conversion module: the control panel of the frequency converter to be tested sends out a high level with fixed frequency, receives the output of the U/V/W three phases, checks and accepts in a timing counting mode, and transmits a high level voltage value and a count value to the main control panel to be displayed by the HMI and retain data.
AI/O port board: the analog input signal is connected with a 5V signal output by the AI board; displaying and storing the numerical value by the HMI when the numerical value reaches an AI/O port of a control plate of the tested frequency converter; the analog output program outputs a 5V signal by default to the test main control board, and the signal is displayed and reserved by the HMI 6.
DI/O port board: each DI digital input signal is closed every 0.5S for 100 times, and the display screen records the closing times of each DI point input. The digital quantity output port outputs the data once every 0.5S, the data is continuously output for 100 times, and the display screen records the output times of each DO point.
And a voltage sampling board, namely, a PCB (printed circuit board) is adopted to reserve a probe and configure a sampling needle to acquire the power supply voltage on the control board of the tested frequency converter, the acquired value is transmitted to a test main control board, and the HMI displays and reserves data.
And the temperature simulation module is used for providing a resistance value of 10K omega corresponding to a fixed temperature value of 25 ℃ according to an NTC sensor curve, connecting the resistance value to a temperature port of a control plate of the tested frequency converter, and communicating the control plate of the tested frequency converter with a display screen HMI to display a current temperature value and retain data.
And the voltage simulation module is used for outputting direct-current voltage as the output of the excitation source, ensuring that the output voltage is 3V and connecting to a voltage port of the control panel of the tested frequency converter, and communicating the control panel of the tested frequency converter with the display screen HMI to display the current voltage value and retain data.
And the current simulation module is used for ensuring that the excitation source is direct-current voltage and the current ensures that the current outputting 10mA is connected to the current port of the control board of the tested frequency converter, and the control board of the tested frequency converter is communicated with the display screen HMI to display the current numerical value and retain data.
The power supply module provides 5V, -15V, +15V,24V,6V and GND for the control panel power supply.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the device is designed with the upper computer to record data in the control board testing process, thereby being beneficial to having long-term significance for technical analysis and quality analysis;
2. the device designs the voltage sampling board and the drive conversion board to be matched with the test main control board for use, the test result is displayed on the display screen in a datamation mode, automatic judgment does not need to depend on subjective judgment of people, and the device is more reliable;
3. the upper computer is designed to record the test process, and the condition of missing test items cannot occur.
Drawings
The details of the present invention can be obtained from the following description and the attached drawings.
Fig. 1 is a schematic diagram of the prior art.
Fig. 2 is a schematic structural diagram of a test system for a control panel of a frequency converter with recording and displaying functions according to an embodiment of the present invention.
Detailed Description
In order to make the technical problem, technical solution and beneficial effect to be solved by the present invention more clearly understood, the following technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1:
as shown in fig. 2, according to the utility model discloses a converter control panel test system with record and display function. The method comprises the following steps: the test device 1 and the test platform computer 7. The frequency converter control panel to be detected is set as a frequency converter control panel 2 to be detected.
The testing device 1 comprises a testing main control board 3, a testing check board 4, a simulation module board 5 and a display screen HMI 6.
Included in test strip 4 are drive switch plate 8, AI/O port plate 9, DI/O port plate 10, and voltage sampling plate 11.
The analog module board 5 comprises a temperature analog module 12, a voltage analog module 13, a current analog module 14 and a power supply module 15.
The test inspection board 4 comprises a drive conversion module 8 which is connected with a drive port of the tested frequency converter control board 2; an AI/O port module of the AI/O port plate 9 is connected with an AI/O port of the tested frequency converter control plate 2, a DI/O port module of the DI/O port plate 10 is connected with a DI/O port of the tested frequency converter control plate 2, and a voltage sampling module of the voltage sampling plate 11 is connected with a voltage detection point of the tested frequency converter control plate 2.
The simulation module board 5 comprises a temperature simulation module 12 connected with a temperature port of the tested frequency converter control board 2, a voltage simulation module 13 connected with a voltage port of the tested frequency converter control board 2, a current simulation module 14 connected with a current port of the tested frequency converter control board 2, and a power supply module 15 connected with a power supply port of the tested frequency converter control board 2.
And the test platform computer 7 is connected with the test main control board 3, records the test result and provides data support for later data statistics and improvement.
The display HMI6 is connected with the test main control board 3 and is connected with the communication port of the tested frequency converter control board 2.
The drive conversion module 8: the frequency converter control panel 2 to be tested sends out fixed frequency high level, accepts U/V/W three-phase output, checks and accepts through the timing count mode, transmits high level voltage value and count value to main control board 3 and is shown by HMI6 and keep the data.
AI/O port plate 9: the analog input signal is connected with a 5V signal output by the AI board; the AI/O port of the control panel 2 of the frequency converter to be tested is displayed and stored by the HMI 6; the analog output program outputs a 5V signal by default to the test main control board 3, and the HMI6 displays and retains the data.
DI/O port plate 10: each DI digital input signal is closed every 0.5S for 100 consecutive times, and the display screen 6 records the number of times each DI point input is closed. The digital quantity output port outputs the digital quantity once every 0.5S and continuously outputs the digital quantity for 100 times, and the display screen 6 records the output times of each DO point.
And the voltage sampling board 11 is used for collecting the power supply voltage on the tested frequency converter control board 2 by adopting a PCB (printed circuit board) probe-reserving configuration sampling needle, transmitting the collected value to the test main control board 3, and displaying and reserving data by the HMI 6.
And the temperature simulation module 12 is used for providing a resistance value of 10K omega corresponding to a fixed temperature value of 25 ℃ according to the NTC sensor curve, connecting the resistance value to a temperature port of the tested frequency converter control plate 2, and communicating the tested frequency converter control plate 2 with the display screen HMI6 to display the current temperature value and retain data.
And the voltage simulation module 13 is used for outputting direct-current voltage to the excitation source, ensuring that the voltage output is 3V and is connected to a voltage port of the tested frequency converter control board 2, and communicating the tested frequency converter control board 2 with the display screen HMI6 to display the current voltage value and retain data.
And in the current simulation module 14, an excitation source is direct-current voltage, the current ensures that the current of 10mA is output and is connected to the current port of the tested frequency converter control board 2, and the tested frequency converter control board 2 communicates with the display screen HMI6 to display the current numerical value and retain data.
The power supply module 15 provides control panel power supplies 5V, -15V, +15V,24V,6V and GND.
Preferably, the test main control board chip model is as follows: STM32F407VGT 6. And arranging corresponding peripheral circuits at the periphery of the main chip.
1. The device is designed to record data in the control panel testing process by the upper computer, and provide data for later quality improvement and problem search.
2. This device design voltage sampling board cooperation test main control board uses, with voltage value display on the display screen, need not universal meter or oscilloscope.
3. The device designs the drive conversion board to be matched with the test main control board for use, the drive output signal is displayed on the display screen in a datamation mode, automatic judgment is free of dependence on subjective judgment of people, and the device is more reliable.
4. The upper computer is designed to record the test process, and the condition that test items are omitted is avoided, so that the quality is improved.
The non-illustrated parts related to the present invention are the same as or implemented by the prior art.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (10)
1. A frequency converter control panel test system with recording and displaying functions is characterized by comprising:
the testing device is used for connecting the tested frequency converter control board and at least comprises a testing main control board and a display screen HMI; the display screen HMI is connected with the test main control board, and the test main control board and the display screen HMI are simultaneously connected with a communication port of the control board of the tested frequency converter;
and the upper computer is connected with the main control board of the testing device.
2. The system for testing a control board of a frequency converter with recording and displaying functions as claimed in claim 1, wherein the testing device further comprises a testing inspection board provided with an AI/O port board; the test main control board is connected with the AI/O port board of the test inspection board, and the AI/O port board of the test inspection board is simultaneously connected with the AI/O port of the control board of the tested frequency converter.
3. The system for testing a frequency converter control board with recording and displaying functions as claimed in claim 1, wherein the test board further comprises a DI/O port and a driving conversion module, and the DI/O port and the driving conversion module of the test board are respectively connected to the DI/O port and the driving port of the tested frequency converter control board.
4. The frequency converter control board test system with recording and displaying functions of claim 1, wherein the test check board further comprises a voltage sampling board, and the voltage sampling board is connected with a voltage detection point of the frequency converter control board to be tested.
5. The frequency converter control board test system with recording and displaying functions of claim 4, wherein the voltage sampling board is provided with a PCB probe point sampling probe.
6. The system for testing a control board of a frequency converter with recording and displaying functions as claimed in claim 1, wherein the testing device further comprises an analog module board, the analog module board comprises a temperature analog module, a voltage analog module, a current analog module, and a power supply module; the temperature simulation module is connected with a temperature port of the tested frequency converter control panel, the voltage simulation module is connected with a voltage port of the tested frequency converter control panel, the current simulation module is connected with a current port of the tested frequency converter control panel, and the power supply module is connected with a power supply port of the tested frequency converter control panel.
7. The frequency converter control board test system with recording and displaying functions of claim 1, wherein the power module ports are respectively set to control board power supplies 5V, -15V, +15V,24V,6V, GND.
8. The frequency converter control board test system with recording and displaying functions as claimed in claim 1, wherein the AI/O port board is connected to a control board power supply 5V.
9. The system for testing a frequency converter control board with recording and displaying functions of claim 1, wherein the types of the test main control board chip are as follows: STM32F407VGT 6.
10. The system for testing control board of frequency converter with recording and displaying functions as claimed in claim 1, wherein the host computer is a computer having a data storage device, an input device and a computing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221044002.7U CN217305757U (en) | 2022-04-28 | 2022-04-28 | Frequency converter control panel test system with recording and displaying functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221044002.7U CN217305757U (en) | 2022-04-28 | 2022-04-28 | Frequency converter control panel test system with recording and displaying functions |
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| Publication Number | Publication Date |
|---|---|
| CN217305757U true CN217305757U (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221044002.7U Active CN217305757U (en) | 2022-04-28 | 2022-04-28 | Frequency converter control panel test system with recording and displaying functions |
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| CN (1) | CN217305757U (en) |
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- 2022-04-28 CN CN202221044002.7U patent/CN217305757U/en active Active
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