CN211928099U - Electric control board, control board and test system - Google Patents
Electric control board, control board and test system Download PDFInfo
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- CN211928099U CN211928099U CN202020173290.0U CN202020173290U CN211928099U CN 211928099 U CN211928099 U CN 211928099U CN 202020173290 U CN202020173290 U CN 202020173290U CN 211928099 U CN211928099 U CN 211928099U
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Abstract
The application discloses automatically controlled board, control panel and test system, test system includes test fixture, control panel and automatically controlled board. The electric control board comprises an MCU, a first functional module, a first storage medium, a first power supply module and a detection port, wherein the detection port is connected with the first functional module and the first power supply module and provides a test port for the control board; the control panel comprises a processor, a second function module, a second storage medium, a touch screen, a second power module, a start button and an emergency stop button, the processor sends a test signal and a detection test signal to the electric control panel through the second function module, and the touch screen is connected with the processor and used for setting a test item and a test threshold; the control panel sends a test instruction to the electric control panel through the test fixture and receives a test result, wherein the processor is in communication connection with the MCU through the test fixture, and the second functional module is in signal connection with the detection port through the test fixture. The application is suitable for being applied to the production of the electric control boards with small batch and various function combinations.
Description
Technical Field
The application relates to the technical field of electronics, in particular to an electric control board, a control board and a test system.
Background
The electric control board is mainly used for controlling electric appliances such as a heat pump, an air conditioner and the like, and in the production of the electric control board, a universal FCT system is usually used for carrying out function test on the PCBA of the electric control board after SMT, so that the defective products are prevented from flowing to the next working procedure. Normally, an electric control board product needs to be developed with a set of FCT system, the development and debugging time of the FCT system is long, and the production requirements of electric control boards with various functional combinations cannot be met. In addition, the universal FCT system is used, so that the production cost is high, and the production of small-batch electric control boards is not facilitated.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides an electric control board, a control board and a test system, which can facilitate the line change of a production line, improve the line changing speed of products and be suitable for the production of small-batch electric control boards.
According to the automatically controlled board of this application first aspect embodiment, including:
MCU；
the first functional module is in signal connection with the MCU and is used for controlling and/or detecting peripheral electric control equipment;
the first storage medium is in signal connection with the MCU and is used for storing a self-checking program;
the first power supply module is electrically connected with the MCU, the first functional module and the first storage medium;
and the detection port is in signal connection with the first functional module, is electrically connected with the first power supply module and is used for detecting the first functional module and the first power supply module.
According to the electric control board of the embodiment of the first aspect of the application, at least the following beneficial effects are achieved:
the electric control board is provided with a detection port for connecting a test device, the test device can test the first functional module and the first power module on the electric control board conveniently, and the test device can complete the detection of the first functional module and the first power module through the detection port. The test equipment can execute corresponding test actions according to the functions supported by the first functional module of the control board, so that the test equipment can be suitable for electric control boards with different functions, and therefore the development cost and time of the test equipment can be saved by the electric control board.
According to some embodiments of the present application, the first functional module includes a phase sequence detection unit and an electronic expansion valve driving unit, and the MCU is in signal connection with the phase sequence detection unit and the electronic expansion valve driving unit.
According to some embodiments of the present application, the first functional module further includes a current detection unit and a temperature detection unit, and the MCU is in signal connection with the current detection unit and the temperature detection unit.
According to some embodiments of the present application, the first functional module further includes a switch detection unit, a relay unit, and a dial switch unit, and the MCU is in signal connection with the switch detection unit, the relay unit, and the dial switch unit.
According to the control panel of the embodiment of the second aspect of the present application, including:
a processor;
the second functional module is in signal connection with the processor and is used for outputting and/or inputting the test signal;
the second storage medium is in signal connection with the processor and is used for storing a test program;
the touch screen is in signal connection with the processor, is used for displaying a test state and a test result, and is used for selecting a test item and setting a test threshold value;
the second power supply module is electrically connected with the processor, the second function module, the second storage medium and the touch screen;
the starting button is in signal connection with the processor and is used for starting the test program;
and the emergency stop button is in signal connection with the processor and is used for suspending the test program and cutting off the power supply of the tested electric control board.
According to the electric control board of the embodiment of the second aspect of the application, at least the following beneficial effects are achieved:
the control board is provided with a second functional module for testing the tested electric control board, the second functional module sends or receives a test signal to the tested electric control board under the control of the processor, and can perform corresponding test actions according to the actual functions of the tested electric control board, so that the test requirements on the tested electric control boards with different functions can be met; in addition, for tested electric control boards with different function combinations, test items to be executed by the control board can be set through the touch screen, and a test program does not need to be compiled again, so that the method is suitable for the tested electric control boards with various function combinations in small-batch production, and the development cost and the development time of a test system are saved; secondly, can also look over the test result through the touch-control screen, be convenient for analyze the bad reason of being surveyed the electric control board, improve production efficiency.
According to some embodiments of the application, the second functional module comprises a phase sequence testing unit and an electronic expansion valve testing unit, and the processor is in signal connection with the phase sequence testing unit and the electronic expansion valve testing unit.
According to some embodiments of the present application, the second functional module further comprises a voltage test unit and a current test unit, the processor is in signal connection with the voltage test unit, and the second power supply module is electrically connected with the current test unit.
According to some embodiments of the present application, the second functional module further comprises a switch test unit and a relay test unit, the processor being in signal connection with the switch test unit and the relay test unit.
A test system according to an embodiment of the third aspect of the present application comprises:
the test fixture is provided with a temperature simulation resistor;
in the electric control board according to the embodiment of the first aspect, the electric control board is connected to the test fixture;
in the control board according to the second embodiment of the present invention, the control board is connected to the test fixture, and the control board is connected to the electric control board through the test fixture.
The test system according to the embodiment of the third aspect of the present application has at least the following advantages:
the control board and the electric control board are independent and can communicate with each other, and when the product is changed, the test fixture can be replaced to match the electric control boards with different shapes and detection ports; according to the electric control board with different function combinations, corresponding test items are set in the control board, a test program does not need to be compiled again, and development cost and development time are saved; the application is suitable for small-batch production of the electric control boards with different function combinations, and can improve the production efficiency.
According to some embodiments of the application, the test system further comprises an intelligent terminal device, wherein the intelligent terminal device is in communication connection with the control board and is used for storing and counting test results and forming a report.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a functional block diagram of a test system provided in one embodiment of the present application;
FIG. 2 is a schematic diagram of an electrical control board provided in an embodiment of the present application;
fig. 3 is a schematic diagram of a control board provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, if there are first, second, third and fourth described only for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
The electric control board according to the embodiment of the first aspect of the present application is described in detail below with reference to the drawings.
Referring to fig. 1, one embodiment of the present application provides an electronic control board 300 including: the MCU310, the first function module 320, the first storage medium 330, the detection port 340, and the first power module 350. The MCU310 is in signal connection with the first functional module 320, and the MCU310 controls the first functional module 320 to control and monitor controlled equipment such as a heat pump, an air conditioner and the like; the first function module 320 is responsible for controlling and monitoring the controlled device; the detection port 340 is in signal connection with the first function module 320, and is used for providing an interface for detecting the first function module 320 for the test equipment, so that the test equipment can test the first function module 320 on the electronic control board 300 conveniently; the first storage medium 330 is in signal connection with the MCU310 and is used to store a self-test program; the first power module 350 is electrically connected with the MCU310, the first function module 320, the first storage medium 330 and the detection port 340, the first power module 350 is provided with an AC/DC power supply, the AC/DC power supply provides a working voltage for the electronic control board 300, in addition, the detection port 340 is electrically connected with the first power module 350, and the detection port 340 can detect an output voltage of the first power module 350, thereby determining whether the working voltage of the electronic control board 300 is normal. When the function test is performed on the electronic control board 300 of this embodiment, the MCU310 runs the self-test program, receives the test instruction sent by the test equipment, and controls the first functional module 320 to complete the corresponding test action and read the state of the first functional module 320. The detection port 340 of the embodiment is used for connecting a test device, so that the test device can test the first function module 320 and the first power module 350 on the electronic control board 300 conveniently. The test device can execute corresponding tests according to the functions supported by the first functional module 320, so that the test device can be suitable for the electronic control board 300 with different functions, and therefore, the electronic control board 300 of the embodiment can save the production cost and time of the test device.
Referring to fig. 2, another embodiment of the present application provides an electronic control board 300, and the first functional module includes a phase sequence detection unit 321 and an electronic expansion valve driving unit 322. The MCU310 is in signal connection with the phase sequence detection unit 321, the MCU310 determines whether the power supply is in a positive phase, a negative phase or a phase loss by reading the signal output by the phase sequence detection unit 321, and the phase sequence detection unit 321 of this embodiment can monitor the power supply status of the controlled device, thereby preventing the controlled device from being burnt and damaged due to the negative phase or the phase loss of the power supply; the electronic expansion valve driving unit 322 is configured to output a four-phase eight-beat driving pulse signal to the electronic expansion valve, and control the opening degree of the electronic expansion valve, and the electronic expansion valve driving unit 322 of this embodiment may control the electronic valve of the controlled device.
Referring to fig. 2, another embodiment of the present application provides an electronic control board 300, the first functional module includes a current detection unit 324 and a temperature detection unit 325, and the MCU310 is in signal connection with the current detection unit 324 and the temperature detection unit 325. The current detection unit 324 is provided with a first analog/digital converter and a current input resistor, the MCU310 detects voltages at two ends of the current input resistor through the first analog/digital converter, and obtains a current value according to a corresponding relationship among the voltages, the resistors and the current, so as to implement overcurrent protection on the controlled device; the temperature detection unit 325 is provided with a voltage division circuit and a second analog/digital converter, an input end of the voltage division circuit is connected with a thermistor arranged on the controlled equipment, the MCU310 reads a voltage value on the thermistor through the second analog/digital converter, then obtains a resistance value of the thermistor through a reference voltage value of the voltage division circuit and a reference resistance value of the voltage division circuit, and finally obtains a temperature value through a corresponding relation between the resistance value of the thermistor and the temperature, so that the refrigeration and heating temperatures of the controlled equipment can be monitored, and the working state of the controlled equipment can be adjusted.
Referring to fig. 2, another embodiment of the present application provides an electronic control board 300, and the first functional module further includes a switch detection unit 326, a relay unit 323, and a dial switch unit 327. The switch detection unit 326 is provided with a first optical coupler connector and a connecting terminal which are connected with a first I/O pin of the MCU310, the first I/O pin of the MCU310 is in signal connection with a switching device of the controlled device through the connecting terminal and the first optical coupler connector, and detects a high/low level value output by the switching device of the controlled device, thereby playing a role in detecting a working state of the controlled device; the relay unit 323 is installed on the electric control board, the relay unit 323 comprises a first relay and a first relay driving circuit, a second I/O pin of the MCU310 is in signal connection with the first relay driving circuit, the MCU310 controls the first relay to be switched on and off through the first relay driving circuit, a power line of the controlled equipment is connected to a touch switch of the first relay, the MCU310 controls the power line of the controlled equipment to be switched on and off, and the relay unit 323 can play a role in controlling the controlled equipment to operate; the electronic control board is provided with a dial switch unit 327, a third I/O pin of the MCU310 is connected to each key of the dial switch unit 327, and detects a high/low level signal output by each key of the dial switch 327, for example, when the first key of the dial switch 327 is in an on position, the first key outputs a low level, and when the first key of the dial switch 327 is in an off position, the first key outputs a high level, and the electronic control board can enter a corresponding working mode according to the signal output by each key of the dial switch unit 327.
The control board of the second aspect of the present application is described in detail below with reference to the drawings.
Referring to fig. 1, one embodiment of the present application provides a control panel 200 including a processor 210, a second function module 220, a second storage medium 230, a touch screen 250, a start button 240, an emergency stop button 260, and a second power module 270. The second functional module 220 is used for inputting and outputting test signals to the tested electronic control board, and the processor 210 is in signal connection with the second functional module 220 and controls the second functional module 220 to execute test actions; the second storage medium 230 is used for storing a test program, and the processor 210 is in signal connection with the second storage medium 230, reads and executes the test program; the touch screen 250 is in signal connection with the processor 210, and is used for setting test items to be tested and test thresholds of the test items, and for checking test states and test results; the start button 240 is in signal connection with the processor 210 and is used for starting the test program to run; the emergency stop button 260 is in signal connection with the processor 210, and when an emergency occurs, the emergency stop button 260 is pressed to trigger the processor 210 to stop running the test program and cut off the power supply of the tested electric control board; the second power module 270 is provided with a DC/DC direct-current power supply, the second power module 270 is electrically connected to the processor 210, the second function module 220, the second storage medium 230 and the touch screen 250, and the second power module 270 provides working voltages for the processor 210, the second function module 220, the second storage medium 230 and the touch screen 250; the control board of the embodiment makes corresponding test actions according to the actual functions of the tested electric control board, and can meet the test requirements of the tested electric control boards with different functions; in addition, the test items to be executed are set through the touch screen 250, and the test program does not need to be compiled again, so that the embodiment is suitable for the tested electric control boards with various function combinations in small-batch production, and the development cost and the development time of the tested electric control boards are saved; secondly, the test result can be checked through the touch screen 250, so that the reason for the bad condition of the tested electric control board can be conveniently analyzed, and the production efficiency is improved; in addition, the emergency stop button 260 can protect the tested electronic control board during testing.
Referring to fig. 3, another embodiment of the present application provides a control board 200, and the second functional module includes a phase sequence test unit 221 and an electronic expansion valve test unit 222. The phase sequence test unit 221 is provided with a phase sequence control relay, the input end of the phase sequence control relay is connected with a three-phase mains supply, the output end of the phase sequence control relay is connected with a tested electric control board, and a positive phase signal, a reverse phase signal and a phase loss signal are sent to the tested electric control board; the electronic expansion valve testing unit 222 is provided with a pulse detection circuit, and the processor 210 detects whether the input pulse signal is a four-phase eight-beat pulse signal through the pulse detection circuit. The method can detect whether the phase sequence detection function and the electronic expansion valve driving function of the detected electric control board are normal or not.
Referring to fig. 3, another embodiment of the present application provides a control board 200, and the second functional module further includes a voltage test unit 223 and a current test unit 224. The voltage testing unit 223 is provided with a third analog/digital converter for detecting the voltage value output by the tested electric control board; the current testing unit 224 is provided with a voltage output terminal, and the voltage output terminal is electrically connected to the second power module 270, and is used for outputting an analog voltage to the tested power board, and the analog voltage generates a testing current on the tested power board. The working voltage of the tested electric control board and the current detection function of the tested electric control board can be detected to determine whether the functions are normal or not through the embodiment.
Referring to fig. 3, another embodiment of the present application provides a control board 200, and the second functional module further includes a switch test unit 226 and a relay test unit 225. The processor 210 is in signal connection with the switch test unit 226, and the switch test unit 226 is provided with an analog switch relay for outputting a switch signal for disconnection or connection to the tested electric control board. The relay test unit 225 is provided with a second optical coupler connector, the output end of the second optical coupler connector is in signal connection with a fourth I/O pin of the processor 210, in an actual test, one end of a touch switch of the tested electric control board relay is connected with a power supply voltage, the other end of the touch switch of the tested electric control board relay is connected with the input end of the second optical coupler connector, when the touch switch of the tested electric control board relay is closed, the power supply voltage is input to the input end of the second optical coupler connector, the touch switch is coupled to the fourth I/O pin of the processor 210 through the second optical coupler connector, and the fourth I/O pin of the processor 210 is triggered. Whether the switch detection port and the relay of the tested electric control board can work normally can be detected through the embodiment.
The following describes in detail a test system according to an embodiment of the third aspect of the present application with reference to the drawings.
Referring to fig. 1, an embodiment of the present application provides a test system, which includes a test fixture 100, an electronic control board 300 according to an embodiment of a first aspect of the present application, and a control board 200 according to an embodiment of a second aspect of the present application. The first end of the test fixture 100 is in signal connection with the 485 communication interface of the MCU310, the second end of the test fixture 100 is in signal connection with the 485 communication interface of the processor 210, the test fixture 100 plays a role in connecting the control board 200 and the electronic control board 300, so as to realize the communication connection between the MCU310 and the processor 210, and the processor 210 sends a test instruction to the MCU310 through the 485 communication interface and receives a test result; the third end of the test fixture 100 is in signal connection with the second functional module 220 through a flat cable, the fourth end of the test fixture 100 is in signal connection with the detection port 340 through a thimble, the test fixture 100 plays a role in connecting the second functional module 220 and the detection port 340, the second functional module 220 sends and detects test signals to the detection port 340 through the test fixture 100, the detection port 340 is in signal connection with the first functional module 320, and the first functional module 320 sends and receives test signals through the detection port 340; the test fixture 100 is provided with a temperature simulation resistor 110 for simulating a thermistor, the temperature simulation resistor 110 is in signal connection with the first function module 320 of the electronic control board 300, the electronic control board 300 reads the resistance value of the temperature simulation resistor 110 to obtain a corresponding temperature value, and sends a test result to the control board 200, and the control board 200 judges whether the temperature detection function of the electronic control board 300 is normal or not according to the test result. In addition, before the test, the second power module 270 of the control board 200 needs to be connected to the external power supply 500 and powered by the external power supply 500, the first power module 350 of the electronic control board 300 is connected to the mains power supply through the control board 200 and the test fixture 100, and when an emergency occurs, the test procedure can be suspended through the emergency stop button 260 and the power of the electronic control board 300 can be cut off. The electric control board 300 of the present embodiment is connected to the control board 200 through the test fixture 100, and the test fixture 100 can be replaced to match the electric control board 300 with different shapes and detection ports 340; secondly, the touch screen 250 is used for setting test items and test thresholds, so that the development time and the development cost of a test system are saved, and the method is suitable for the production of the electric control board 300 with small batch and various function combinations; in addition, the test result is displayed through the touch screen 250, which is beneficial to analyzing bad conditions; also, the scram button 260 may protect the electronic control board 300 during testing.
Referring to fig. 1, another embodiment of the present application provides a test system, which further includes an intelligent terminal 400, where the intelligent terminal 400 is in communication connection with the processor 210 through a UART communication interface, the processor 210 sends a test result to the intelligent terminal 400 through the UART communication interface, and the intelligent terminal 400 stores, counts, and forms a report on the test result. According to the embodiment, the storage medium of the intelligent device 400 can be used for storing the test result, the calculation capability of the intelligent device 400 is used for counting the bad conditions and generating the visual production condition report, and the workload of the control panel 200 is reduced while the analysis is easy.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application.
Claims (10)
1. An electronic control board, comprising:
MCU；
the first functional module is in signal connection with the MCU and is used for controlling and/or detecting peripheral electric control equipment;
the first storage medium is in signal connection with the MCU and is used for storing a self-checking program;
the first power supply module is electrically connected with the MCU, the first functional module and the first storage medium;
and the detection port is in signal connection with the first functional module, is electrically connected with the first power supply module and is used for detecting the first functional module and the first power supply module.
2. The electric control board according to claim 1, wherein the first functional module comprises a phase sequence detection unit and an electronic expansion valve driving unit, and the MCU is in signal connection with the phase sequence detection unit and the electronic expansion valve driving unit.
3. The electric control board according to claim 1, wherein the first functional module further comprises a current detection unit and a temperature detection unit, and the MCU is in signal connection with the current detection unit and the temperature detection unit.
4. The electric control board according to claim 1, wherein the first functional module further comprises a switch detection unit, a relay unit and a dial switch unit, and the MCU is in signal connection with the switch detection unit, the relay unit and the dial switch unit.
5. A control panel, comprising:
a processor;
the second functional module is in signal connection with the processor and is used for outputting and/or inputting the test signal;
the second storage medium is in signal connection with the processor and is used for storing a test program;
the touch screen is in signal connection with the processor, is used for displaying a test state and a test result, and is used for selecting a test item and setting a test threshold value;
the second power supply module is electrically connected with the processor, the second function module, the second storage medium and the touch screen;
the starting button is in signal connection with the processor and is used for starting the test program;
and the emergency stop button is in signal connection with the processor and is used for suspending the test program and cutting off the power supply of the tested electric control board.
6. The control board of claim 5, wherein the second functional module comprises a phase sequence test unit and an electronic expansion valve test unit, and the processor is in signal connection with the phase sequence test unit and the electronic expansion valve test unit.
7. The control board of claim 5, wherein the second functional module further comprises a voltage test unit and a current test unit, the processor is in signal connection with the voltage test unit, and the second power module is electrically connected with the current test unit.
8. The control board of claim 5, wherein the second functional module further comprises a switch test unit and a relay test unit, the processor being in signal connection with the switch test unit and the relay test unit.
9. A test system, comprising:
the test fixture is provided with a temperature simulation resistor;
the electric control board according to any one of claims 1 to 4, wherein the electric control board is connected with the test fixture;
the control board according to any one of claims 5 to 8, wherein the control board is connected to the test fixture, and the control board is connected to the electronic control board through the test fixture.
10. The test system according to claim 9, further comprising an intelligent terminal device, wherein the intelligent terminal device is in communication connection with the control board, and is used for storing, counting and forming a report on the test result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020173290.0U CN211928099U (en) | 2020-02-14 | 2020-02-14 | Electric control board, control board and test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020173290.0U CN211928099U (en) | 2020-02-14 | 2020-02-14 | Electric control board, control board and test system |
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| CN211928099U true CN211928099U (en) | 2020-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163452A (en) * | 2022-06-20 | 2022-10-11 | 深圳拓邦股份有限公司 | Method, device and equipment for detecting compressor without real object and readable storage medium |
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2020
- 2020-02-14 CN CN202020173290.0U patent/CN211928099U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163452A (en) * | 2022-06-20 | 2022-10-11 | 深圳拓邦股份有限公司 | Method, device and equipment for detecting compressor without real object and readable storage medium |
| CN115163452B (en) * | 2022-06-20 | 2024-02-09 | 深圳拓邦股份有限公司 | Method, device and equipment for detecting non-physical compressor and readable storage medium |
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