System and method for intelligently detecting and controlling computer board of microwave oven

Abstract

The invention provides a system and a method for intelligently detecting and controlling a computer board of a microwave oven. The system comprises a computer board to be detected, a signal acquisition module, a function control module and an upper computer, one end of the to-be-tested computer board is connected with one end of the upper computer through the signal acquisition module, and the other end of the to-be-tested computer board is connected with the other end of the upper computer through the function control module; wherein the signal acquisition module comprises an acquisition chip, a filter shaping circuit and an input signal module; according to the system and the method for intelligently detecting and controlling the computer board of the microwave oven, the structure setting of the system can be optimized, so that the system can be compatible with detection of different display screen types, and intelligent detection and control of the computer board by the system are realized. The system can be automatically tested for a long time, manual monitoring is not needed, and the system has the advantages of being time-saving, labor-saving and high in accuracy; and the detection reliability and flexibility of the system can be improved, and the control accuracy of the system is improved.

Description

Technical Field

[0001] The invention relates to the field of detection and control of microwave oven computer boards, and in particular to a system and method for intelligently detecting and controlling microwave oven computer boards. Background Art

[0002] After the traditional microwave oven computer board is designed, it relies on manual testing. Due to the large number of menus and the long menu running time, manual testing alone is not comprehensive on the one hand, and it is easy to miss program bugs or hardware abnormal signals on the other hand, which brings some hidden dangers to the product and easily causes rework. Therefore, it is of great significance to study how to realize automatic detection of computer boards and ensure the reliability, accuracy and flexibility of automatic detection.

[0003] In patent CN109782731B, an automatic test method for the logic function of a microwave oven is mentioned, including host computer software, a control and acquisition system and a microwave oven controller, wherein the control and acquisition system includes a control module, a UART communication module and an acquisition module; wherein the control module is electrically connected to the microwave oven controller and electrically connected to the host computer software through the UART communication module, thereby realizing the control of the microwave oven controller by the host computer software, and the acquisition module is electrically connected to the microwave oven controller and electrically connected to the host computer software through the UART communication module, thereby realizing the information collection of the microwave oven controller by the host computer software. In addition, the automatic test method includes the following operations: test case generation, test case analysis, test case execution, microwave oven load status information collection, data judgment stage, and result output. Through the improvement of the above structure, although it has the advantages of being simple and reasonable, excellent performance and small error, due to the limitations of each module in its structure, it is not suitable for automatic detection and flexible control of computer boards with different functions. Summary of the invention

[0004] In view of this, the present invention aims to propose a system and method for intelligently inspecting and controlling microwave oven computer boards, so as to solve the problems existing in the prior art of manually testing computer boards, which are prone to incomplete testing, or easy to miss program bugs or hardware abnormal signals, thus affecting product quality; thereby optimizing the structural settings of the system, making the system compatible with the detection of different display screen types, and realizing the system's intelligent detection and control of computer boards. It can also enable the system to automatically test for a long time without manual monitoring, with the characteristics of saving time and effort and high accuracy; it can also improve the detection reliability and flexibility of the system, as well as the control accuracy of the system.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] The present invention relates to a system and method for intelligently checking and controlling a microwave oven computer board. The system comprises a computer board to be tested, a signal acquisition module, a function control module and a host computer; one end of the computer board to be tested is connected to one end of the host computer through the signal acquisition module, and the other end of the computer board to be tested is connected to the other end of the host computer through the function control module; wherein the signal acquisition module comprises an acquisition chip, a filtering and shaping circuit and an input signal module; one end of the input signal module is connected to the acquisition chip through the filtering and shaping circuit, and the other end of the input signal module is connected to a display screen; and the acquisition chip is connected to the host computer.

[0007] Furthermore, the filtering and shaping circuit includes a shaping circuit 1 and a shaping circuit 2; the input signal module includes an input signal module 1 and an input signal module 2; the SEG port of the display screen is connected to the acquisition chip for unidirectional communication via the input signal module 1 and the shaping circuit 1; the COM port of the display screen is connected to the acquisition chip for unidirectional communication via the input signal module 2 and the shaping circuit 2.

[0008] Furthermore, the filtering and shaping circuit also includes a screen selection switch; the screen selection switch is connected to the acquisition chip in a unidirectional communication manner.

[0009] Furthermore, the shaping circuit includes a SEG port selection switch, a voltage shaper and a filtering module; one end of the voltage shaper is unidirectionally connected to the SEG port selection switch and the input signal module respectively, and the other end of the voltage shaper is unidirectionally connected to the acquisition chip through the filtering module.

[0010] Furthermore, the shaping circuit No. 2 includes a COM port selection switch, a voltage shaper No. 2 and a filtering module No. 2; one end of the voltage shaper No. 2 is unidirectionally connected to the COM port selection switch and the input signal module No. 2, and the other end of the voltage shaper No. 2 is unidirectionally connected to the acquisition chip through the filtering module No. 2.

[0011] Furthermore, the signal acquisition module also includes a detection component, one end of which is connected to the acquisition chip, and the other end of which is connected to the corresponding component to be detected in the computer board to be tested.

[0012] Furthermore, the signal acquisition module also includes a first USB to serial port, one end of the first USB to serial port is connected to the acquisition chip for bidirectional communication, and the other end of the first USB to serial port is connected to the host computer for bidirectional communication.

[0013] Furthermore, the functional control module includes a control chip, an encoder signal module, a control module, a feedback signal module and a second USB to serial port; one end of the encoder signal module, the control module and the feedback signal module are all connected to the control chip for unidirectional communication, and the other ends of the encoder signal module, the control module and the feedback signal module are respectively connected to the corresponding components of the computer board to be tested; the control chip is connected to the host computer for bidirectional communication through the second USB to serial port.

[0014] Furthermore, the control module includes a door signal control module, a power control module, a button control module and a DAC control module; one end of the door signal control module, the power control module, the button control module and the DAC control module are all connected to the control chip for unidirectional communication; the other ends of the door signal control module, the power control module, the button control module and the DAC control module are respectively connected to the ports at corresponding positions on the computer board to be tested.

[0015] A method for intelligently checking and controlling a microwave oven computer board, the method being applied to a system for intelligently checking and controlling a microwave oven computer board, the method comprising the following steps:

[0016] Step 1: Connect the system to the computer board to be tested, and adjust the screen selection switch, SEG port selection switch, and COM port selection switch to the preset positions according to the display screen type of the computer board to be tested;

[0017] Step 2: Power on the system;

[0018] Step 3, send command control: the host computer sends commands to the control chip through the second USB to serial port, and the control chip outputs the commands to the computer board to be tested in turn, and the computer board to be tested performs corresponding actions according to the control signal in the command;

[0019] Step 4: Collecting running data: The acquisition chip collects the data of the corresponding components on the computer board to be tested in turn, and then transmits the data to the host computer through the first USB to serial port;

[0020] Step 5. Compare data and determine whether there is an abnormality: The host computer compares the received collected data with the predetermined instruction data one by one, obtains the test result of the computer board to be tested, and completes the control and operation test of the computer board to be tested.

[0021] Compared with the prior art, the system and method for intelligently inspecting and controlling a microwave oven computer board described in the present invention have the following beneficial effects:

[0022] Through the setting of the system, the structural setting of the system can be optimized, so that the system can be compatible with the detection of different display screen types, and the system can realize intelligent detection and control of computer boards. It can also enable the system to automatically test for a long time without manual monitoring, which has the characteristics of saving time and effort and high accuracy; it can also improve the detection reliability and flexibility of the system, and improve the control accuracy of the system. In addition, through the setting of the method, it is conducive to the realization of rapid automatic detection and control of computer boards with different functions, and it is also conducive to improving the flexibility of the system in detecting and controlling different computer boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the system;

[0025] Figure 2 A schematic diagram of the method flow chart is shown in FIG.

[0026] Explanation of the reference numerals: 1. Computer board to be tested; 2. Signal acquisition module; 20. Detection component; 21. Acquisition chip; 22. Small relay detection module; 23. Large relay detection module; 24. Buzzer detection module; 25. Water pump current detection module; 26. Frequency conversion port PWM signal detection module; 27. Electromagnet action detection module; 28. DC furnace lamp detection module; 200. Filter shaping circuit; 201. Shaping circuit 1; 210. SEG port selection switch; 211. Voltage shaper 1; 212. Filter module 1; 202. Shaping circuit 2; 214. COM port selection switch 1. Switch; 215. Voltage shaper II; 216. Filter II module; 203. Screen selection switch; 204. IIC signal detection module; 29. ​​Input signal module; 291. Input signal module I; 292. Input signal module II; 219. First USB to serial port; 3. Function control module; 31. Control chip; 32. Encoder signal module; 33. Control module; 331. Door signal control module; 332. Power control module; 333. Button control module; 334. DAC control module; 34. Feedback signal module; 35. Second USB to serial port; 4. Host computer. DETAILED DESCRIPTION

[0027] The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the essence of their work to other persons skilled in the art. However, these inventive concepts can be embodied in many different forms and should not be considered limited to the embodiments described herein.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] This embodiment is aimed at detecting the computer board of a microwave oven. Similar to the conventional computer board detection of a microwave oven, the overall structure is composed of a host computer and relays.

[0031] In order to solve the problem of incomplete testing or easy omission of program bugs or hardware abnormal signals in the manual testing computer board in the prior art, thus affecting the product quality; this embodiment proposes a system and method for intelligent detection and control of microwave oven computer boards, which includes a computer board to be tested 1, a signal acquisition module 2, a function control module 3 and a host computer 4. One end of the computer board to be tested 1 is connected to one end of the host computer 4 through the signal acquisition module 2, and the other end of the computer board to be tested 1 is connected to the other end of the host computer 4 through the function control module 3. Among them, the signal acquisition module 2 includes an acquisition chip 21, a filter shaping circuit 200 and an input signal module 29; one end of the input signal module 29 is connected to the acquisition chip 21 through the filter shaping circuit 200, and the other end of the input signal module 29 is connected to the display screen; the acquisition chip 21 is connected to the host computer 4. In addition, the display screen is an LED screen and an LCD screen. The input signal module 29 is an input signal module for a common cathode and common anode LED screen and an LCD screen. The computer board to be tested 1 is a different type of microwave oven computer board selected to be tested. The signal acquisition module 2 is a related signal acquisition module of the microwave oven computer board; the function control module 3 is a function control module of the microwave oven computer board.

[0032] Different from the prior art that the computer board 1 to be tested uses manual detection, which is prone to the problem of low detection accuracy, this application sets the corresponding control circuit to control the function operation of the microwave oven computer board according to the hardware function module used by the existing microwave oven computer board, and sets the detection circuit to detect key signals, and then the host computer 4 controls and detects and judges, thereby realizing the intelligent control and detection of the microwave oven computer board. It can optimize the structural setting of the system so that the system can be compatible with the detection of different display screen types, including common cathode and common anode LED screens, LCD screen computer board tests, and at the same time use the control of membrane switch buttons, mechanical buttons, and touch buttons to realize the system's intelligent detection and control of the computer board. It can also enable the system to automatically test for a long time without manual monitoring, with the characteristics of saving time and effort and high accuracy; it can also improve the detection reliability and flexibility of the system, and improve the control accuracy of the system. In addition, the signal acquisition module 2 and the function control module 3 are independently set, which realizes the role of data diversion, reduces the data length, avoids crosstalk between data, and further improves the reliability of the system.

[0033] The filter shaping circuit 200 includes a shaping circuit 1 201 and a shaping circuit 202. The input signal module 29 includes an input signal module 1 291 and an input signal module 292; the SEG port of the display screen is connected to the acquisition chip 21 through the input signal module 1 291 and the shaping circuit 1 201. The COM port of the display screen is connected to the acquisition chip 21 through the input signal module 292 and the shaping circuit 202.

[0034] The filter shaping circuit 200 further includes a screen selection switch 203. The screen selection switch 203 is connected to the acquisition chip 21 in a unidirectional communication manner, and the screen selection switch 203 is a unidirectional signal input.

[0035] Among them, the input signal module 291 is the SEG port input signal module of the common cathode and common anode LED screen and LCD screen; it is used to receive the SEG port input signal of the display screen. The input signal module 292 is the COM port input signal module of the common cathode and common anode LED screen and LCD screen; it is used to receive the COM port signal of the display screen. The screen selection switch 203 is a selection switch module for the common cathode and common anode LED screen and LCD screen, which is used for the acquisition chip 21 to identify the display screen type of the test computer board. The setting of the components in the filtering and shaping circuit 200 is conducive to improving the accuracy of the display screen input signal collected by the system, improving the reliability of the system detection, and enhancing the stability of the system detection.

[0036] The shaping circuit 201 includes a SEG port selection switch 210, a voltage shaper 211 and a filter module 212. One end of the voltage shaper 211 is unidirectionally connected to the SEG port selection switch 210 and the input signal module 291, respectively, and the other end of the voltage shaper 211 is unidirectionally connected to the acquisition chip 21 through the filter module 212. The end of the SEG port selection switch 210 away from the voltage shaper 211 is connected to the SEG port of the display screen.

[0037] Among them, the SEG port selection switch 210 is a SEG port voltage threshold value selection switch module; according to the type of common cathode and common anode LED and LCD, different voltage threshold values ​​are selected and input to the voltage shaper 211. The filter module 212 is a signal module after SEG port shaping and filtering of the common cathode and common anode LED screen and LCD screen; it is used to improve the signal recognition accuracy of the acquisition chip 21.

[0038] By setting the voltage shaper 211, it can be combined with the SEG port selection switch 210 to effectively shape the SEG port input signal of the computer board 1 to be tested into a normal high and low level square wave signal. By setting the components in the shaping circuit 201, the accuracy and reliability of the system's acquisition of the SEG port input signal of the display screen can be effectively improved.

[0039] The second shaping circuit 202 includes a COM port selection switch 214, a second voltage shaper 215 and a second filter module 216. One end of the second voltage shaper 215 is unidirectionally connected to the COM port selection switch 214 and the second input signal module 292, respectively, and the other end of the second voltage shaper 215 is unidirectionally connected to the acquisition chip 21 through the second filter module 216. The end of the COM port selection switch 214 away from the second voltage shaper 215 is connected to the COM port of the display screen.

[0040] Among them, the COM port selection switch 214 is a COM port voltage threshold value selection switch module; according to the common cathode and common anode LED screen, LCD screen type, different voltage threshold values ​​are selected and input to the voltage second shaper 215. The second filter module 216 is a signal module after COM port shaping and filtering of the common cathode and common anode LED screen and LCD screen; it is used to improve the signal recognition accuracy of the acquisition chip 21.

[0041] By setting the voltage second shaper 215, it can be combined with the COM port selection switch 214 to effectively shape the COM port input signal of the computer board 1 to be tested into a normal high and low level square wave signal. By setting the components in the second shaping circuit 202, the accuracy and reliability of the system's acquisition of the display screen COM port input signal can be effectively improved; thereby avoiding the appearance of interference signals that affect the accuracy of the system's control of the computer board 1 to be tested.

[0042] The signal acquisition module 2 also includes a detection component 20, one end of which is connected to the acquisition chip 21, and the other end of which is connected to the corresponding components to be detected in the computer board 1 to be tested. Among them, the detection component 20 includes an IIC signal detection module 204; one end of the IIC signal detection module 204 is connected to the acquisition chip 21 for unidirectional communication, and the other end of the IIC signal detection module 204 is connected to the components at the corresponding position of the display screen. The IIC signal detection module 204 is used to collect some infrared sensor temperature measurement data or LCD screen data with integrated chips.

[0043] The detection component 20 also includes a small relay detection module 22, a large relay detection module 23, a buzzer detection module 24, a water pump current detection module 25, a frequency conversion port PWM signal detection module 26, an electromagnet action detection module 27 and a DC furnace lamp detection module 28. One end of the small relay detection module 22, the large relay detection module 23, the buzzer detection module 24, the water pump current detection module 25, the frequency conversion port PWM signal detection module 26, the electromagnet action detection module 27 and the DC furnace lamp detection module 28 are all connected to the acquisition chip 21 for unidirectional communication. The other end of the small relay detection module 22 is connected to the small current load in the computer board 1 to be tested. The small current load includes any one or more loads of an AC furnace lamp, a turntable motor, a microwave cooling fan, and a hot air convection fan. The other end of the large relay detection module 23 is connected to the large current load in the computer board 1 to be tested. The large current load includes any one or more loads of a microwave, a barbecue tube, an evaporator, and a hot air tube. The other end of the buzzer detection module 24 is connected to the buzzer in the computer board 1 to be tested, and is used to collect the frequency and time of the buzzer response of the microwave oven computer board. The other end of the water pump current detection module 25 is connected to the DC water pump in the computer board 1 to be tested, and is used to collect the DC water pump current of the microwave oven model. The other end of the frequency conversion port PWM signal detection module 26 is connected to the microwave oven inverter in the computer board 1 to be tested, and is used to collect the PWM signal frequency of the microwave oven inverter. The other end of the electromagnet action detection module 27 is connected to the electromagnet in the computer board 1 to be tested, and is used to detect the secondary door opening electromagnet action signal of some North American models, and identify the door closing and locking status. The other end of the DC oven lamp detection module 28 is connected to the DC oven lamp in the computer board 1 to be tested, and is used to detect the opening and closing signals of the DC oven lamp.

[0044] The acquisition chip 21 can be used to acquire data of the computer board 1 to be tested, i.e., the microwave oven computer board, and communicate with the host computer 4. The small relay detection module 22 is used to acquire small current load action signals of the microwave oven computer board controlling the AC furnace light, turntable motor, microwave cooling fan, hot air convection fan, etc. The large relay detection module 23 is used to acquire large current load action signals of the microwave oven computer board controlling the microwave, grill tube, evaporator, hot air tube, etc.

[0045] The signal acquisition module 2 further includes a first USB-to-serial port 219 , one end of which is connected to the acquisition chip 21 for bidirectional communication, and the other end of which is connected to the host computer 4 for bidirectional communication.

[0046] Through the setting of the first USB to serial port 219, it can be used to upload data to the host computer 4 for analysis and judgment.

[0047] The function control module 3 includes a control chip 31, an encoder signal module 32, a control module 33, a feedback signal module 34 and a second USB to serial port 35. One end of the encoder signal module 32, the control module 33 and the feedback signal module 34 are all connected to the control chip 31 for unidirectional communication, and the other ends of the encoder signal module 32, the control module 33 and the feedback signal module 34 are respectively connected to the corresponding components of the computer board 1 to be tested for communication. The control chip 31 is connected to the host computer 4 for bidirectional communication through the second USB to serial port 35. The feedback signal module 34 is a frequency conversion port feedback signal module, which is used to send a corresponding frequency conversion feedback signal to the microwave oven computer board through the control chip 31 to simulate the transmission signal of the frequency converter.

[0048] By setting the control chip 31, it is possible to send corresponding control signals to the computer board 1 to be tested, i.e., the microwave oven computer board, according to the instructions of the host computer 4, so that the computer board 1 to be tested can operate in the corresponding working state. By setting the components in the function control module 3, it is beneficial to improve the intelligence of the system, reduce the use of labor, reduce the cost of labor, and improve the efficiency of the system in detecting the computer board 1 to be tested. In addition, by setting the host computer 4, it is beneficial to send control signals to the function control module 3, and receive data fed back by the signal acquisition module 2, and analyze and judge the data, so as to realize the fine detection of the function of the microwave oven computer board. In addition, by adopting a 2-way USB to serial port module, i.e., a first USB to serial port 219 and a second USB to serial port 35, data is sent and received in parallel, which can reduce the data length and improve the transmission rate, so that the detection is more accurate and the reliability of the product is improved.

[0049] The encoder signal module 32 includes a rotary encoder signal module and a logic switch encoder control module. One end of the rotary encoder signal module and the logic switch encoder control module are both unidirectionally connected to the control chip 31; the other ends of the rotary encoder signal module and the logic switch encoder control module are respectively connected to the rotary encoder and the logic switch encoder on the computer board 1 to be tested. The rotary encoder signal module is used to send the rotary encoder action signal sent by the control chip 31 to the computer board 1 to be tested, so as to simulate manual operation. The logic switch encoder control module is used to send the corresponding logic switch encoder action signal sent by the control chip 31 to the computer board 1 to be tested, so as to simulate manual operation.

[0050] The control module 33 includes a gate signal control module 331, a power control module 332, a key control module 333 and a DAC control module 334. One end of the gate signal control module 331, the power control module 332, the key control module 333 and the DAC control module 334 are all connected to the control chip 31 for unidirectional communication; the other ends of the gate signal control module 331, the power control module 332, the key control module 333 and the DAC control module 334 are respectively connected to the ports at the corresponding positions on the computer board 1 to be tested.

[0051] The door signal control module 331 is used to control the door opening and closing signals of the microwave oven computer board. The power control module 332 is the test board power control module, which is used to control the power on or off of the microwave oven computer board. The DAC control module 334 is used to convert the digital signal into an analog signal DA, and then transmit it to the temperature detection port or humidity module detection port of the microwave oven computer board, so that the microwave oven computer board performs corresponding actions.

[0052] In addition, the key control module 333 includes a matrix key control module, an independent key control module and a touch key control module. One end of the matrix key control module, the independent key control module and the touch key control module are all connected to the control chip 31 for unidirectional communication; the other ends of the matrix key control module, the independent key control module and the touch key control module are all connected to the computer board 1 to be tested.

[0053] By setting different types of key modules, the corresponding key control signal can be sent to the microwave oven computer board through the control chip 31, so that the microwave oven computer board performs corresponding key actions. This is beneficial to improving the flexibility and accuracy of the system in controlling different computer boards 1 to be tested. It is also beneficial to improving the automatic detection and control range of the system.

[0054] A method for intelligently checking and controlling a microwave oven computer board, the method being applied to a system for intelligently checking and controlling a microwave oven computer board, the method comprising the following steps:

[0055] Step 1: Connect the system to the computer board 1 to be tested, and adjust the screen selection switch 203, the SEG port selection switch 210, and the COM port selection switch 214 to the preset positions according to the display screen type of the computer board 1 to be tested;

[0056] Step 2: Power on the system;

[0057] Step 3: Sending command control: The host computer 4 sends commands to the control chip 31 through the second USB to serial port 35 to control the computer board 1 to perform corresponding actions. The control chip 31 outputs commands to the computer board 1 to perform corresponding actions according to the control signals in the commands.

[0058] Step 4: Collecting operation data: The acquisition chip 21 collects data of corresponding components on the computer board 1 to be tested in sequence, and then transmits the data to the host computer 4 through the first USB to serial port 219.

[0059] Step 5, compare data and determine whether it is abnormal: the host computer 4 compares the received collected data with the predetermined instruction data one by one, obtains the test result of the computer board 1 to be tested, and completes the control and operation test of the computer board 1 to be tested.

[0060] Wherein, in step 3, the instruction includes any one or more of the encoder action signal, gate signal, power control signal, frequency conversion port feedback action signal, key control, and DAC control signal. In step 4, the corresponding components include any one or more of the small relay, large relay, buzzer, water pump, frequency conversion port PWM, electromagnet action, DC furnace lamp, display screen SEG port, COM port, and IIC data port. Wherein, the acquisition chip 21 also collects the infrared temperature measurement data of the IIC data port or the display data of the LCD with integrated chip.

[0061] The setting of the method is conducive to realizing rapid and automatic detection and control of computer boards with different functions, and is also conducive to improving the flexibility of the system in detecting and controlling different computer boards.

[0062] Step one includes:

[0063] Step S11: correspondingly connect the lines between the system and the computer board 1 to be tested;

[0064] Step S12: Obtain the display screen type of the computer board 1 to be tested;

[0065] Step S13: According to the display screen type, first turn the screen selection switch 203 to a preset position; then turn the SEG port selection switch 210 and the COM port selection switch 214 to preset thresholds.

[0066] By setting different selection switch thresholds, on the one hand: it can pave the way for the subsequent host computer 4 to compare the data before and after the operation of the computer board 1 to be tested, reduce the difficulty of detection, improve the detection accuracy, and ensure the detection efficiency; on the other hand: by sending preset instructions to the computer board 1 to be tested, it is also possible to test the reaction sensitivity of the computer board 1 to be tested, and make a preliminary judgment on the response speed of the computer board 1 to be tested, which can help improve the accuracy of the system's detection and control of the computer board 1 to be tested.

[0067] Step five includes:

[0068] Step S51: the host computer 4 compares the received collected data with the predetermined instruction data one by one;

[0069] Step S52: determine whether each component in the computer board 1 to be tested is normal. If yes, the system test result shows PASS, and step S53 is executed; if no, the system test result shows abnormal NG, and step S53 is executed;

[0070] Step S53: Obtain the detection result of the computer board 1 to be tested, and complete the control and operation monitoring of the current computer board 1 to be tested.

[0071] The operation monitoring content can be divided into multiple events. Each event can be any one of the firepower, time, display content, and electromagnet action status of a menu operation.

[0072] By exchanging data between the host computer 4 and the two serial ports, the function of parallel data transmission and reception can be realized, the data length can be reduced, the data transmission rate can be increased, and the operational reliability of the system can be improved, and the security of the system can be enhanced, and the efficiency of system detection can be improved. In addition, the computer boards with different functions only need to be connected to the corresponding functional modules of the microwave oven computer board signal acquisition module 2 and the microwave oven computer board function control module 3, or the module functions to be tested can be selected, and automatic detection and control can be realized through the host computer 4, which has the characteristics of high flexibility. In addition, through the setting of the system of the present application, the different functions of the microwave oven computer board can be fully tested, and the system has a wide range of detection of the model of the computer board 1 to be tested, covering the microwave oven model.

[0073] In the present invention, for any microwave oven computer board detection, it can include a system structure of an intelligent detection and control microwave oven computer board as described in this embodiment, and based on the relevant structure and assembly relationship of the signal acquisition module 2 and the control module 33 provided in this embodiment, the microwave oven computer board detection also includes conventional components including a host computer 4, relays and other structures; in view of the fact that they are all prior art, they will not be described here in detail.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for intelligently monitoring a microwave oven computer board, characterized in that: The invention comprises a computer board to be tested (1), a signal acquisition module (2), a function control module (3) and a host computer (4); one end of the computer board to be tested (1) is connected to one end of the host computer (4) through the signal acquisition module (2), and the other end of the computer board to be tested (1) is connected to the other end of the host computer (4) through the function control module (3); wherein the signal acquisition module (2) comprises an acquisition chip (21), a filter shaping circuit (200) and an input signal module (29); one end of the input signal module (29) is connected to the acquisition chip (21) through the filter shaping circuit (200), and the other end of the input signal module (29) is connected to a display screen; and the acquisition chip (21) is connected to the host computer (4).

2. The system for intelligently checking and controlling a microwave oven computer board according to claim 1 is characterized in that: The filtering and shaping circuit (200) comprises a shaping circuit 1 (201) and a shaping circuit 2 (202); the input signal module (29) comprises an input signal 1 module (291) and an input signal 2 module (292); the SEG port of the display screen is connected to the acquisition chip (21) in a one-way communication through the input signal 1 module (291) and the shaping circuit 1 (201); and the COM port of the display screen is connected to the acquisition chip (21) in a one-way communication through the input signal 2 module (292) and the shaping circuit 2 (202).

3. The system for intelligently checking and controlling a microwave oven computer board according to claim 1 is characterized in that: The filtering and shaping circuit (200) further comprises a screen selection switch (203); the screen selection switch (203) is connected to the acquisition chip (21) in a unidirectional communication manner.

4. The system for intelligently checking and controlling a microwave oven computer board according to claim 2 is characterized in that: The shaping circuit (201) comprises a SEG port selection switch (210), a voltage shaper (211) and a filtering module (212); one end of the voltage shaper (211) is unidirectionally connected to the SEG port selection switch (210) and the input signal module (291), respectively, and the other end of the voltage shaper (211) is unidirectionally connected to the acquisition chip (21) through the filtering module (212).

5. The system for intelligently checking and controlling a microwave oven computer board according to claim 2 is characterized in that: The second shaping circuit (202) comprises a COM port selection switch (214), a second voltage shaper (215) and a second filtering module (216); one end of the second voltage shaper (215) is unidirectionally connected to the COM port selection switch (214) and the second input signal module (292), respectively, and the other end of the second voltage shaper (215) is unidirectionally connected to the acquisition chip (21) through the second filtering module (216).

6. The system for intelligently checking and controlling a microwave oven computer board according to claim 1 is characterized in that: The signal acquisition module (2) further comprises a detection component (20), one end of the detection component (20) being connected to the acquisition chip (21), and the other end of the detection component (20) being connected to a corresponding component to be detected in the computer board to be tested (1).

7. The system for intelligently checking and controlling a microwave oven computer board according to claim 1 is characterized in that: The signal acquisition module (2) further comprises a first USB to serial port (219), one end of the first USB to serial port (219) being bidirectionally connected to the acquisition chip (21), and the other end of the first USB to serial port (219) being bidirectionally connected to the host computer (4).

8. The system for intelligently checking and controlling a microwave oven computer board according to claim 1 is characterized in that: The function control module (3) comprises a control chip (31), an encoder signal module (32), a control module (33), a feedback signal module (34) and a second USB to serial port (35); one end of the encoder signal module (32), the control module (33) and the feedback signal module (34) are all connected to the control chip (31) in a unidirectional communication manner, and the other ends of the encoder signal module (32), the control module (33) and the feedback signal module (34) are respectively connected to the corresponding components of the computer board (1) to be tested; the control chip (31) is connected to the host computer (4) in a bidirectional communication manner via the second USB to serial port (35).

9. The system for intelligently checking and controlling a microwave oven computer board according to claim 8, characterized in that: The control module (33) comprises a gate signal control module (331), a power control module (332), a key control module (333) and a DAC control module (334); one end of the gate signal control module (331), the power control module (332), the key control module (333) and the DAC control module (334) are all connected to the control chip (31) for unidirectional communication; the other ends of the gate signal control module (331), the power control module (332), the key control module (333) and the DAC control module (334) are respectively connected to ports at corresponding positions on the computer board (1) to be tested.

10. A method for intelligently checking and controlling a microwave oven computer board, characterized in that: The method is applied to a system for intelligently inspecting and controlling a microwave oven computer board according to any one of claims 1 to 9, and the method comprises the following steps: Step 1: Connect the system to the computer board (1) to be tested, and adjust the screen selection switch (203), the SEG port selection switch (210), and the COM port selection switch (214) to preset positions according to the display screen type of the computer board (1) to be tested; Step 2: Power on the system; Step 3: Sending command control: The host computer (4) sends commands to the control chip (31) through the second USB to serial port (35), and the control chip (31) outputs the commands to the computer board to be tested (1) in turn, and the computer board to be tested (1) performs corresponding actions according to the control signals in the commands; Step 4: Collecting operation data: The collection chip (21) collects data of corresponding components on the computer board to be tested (1) in sequence, and then transmits the data to the host computer (4) through the first USB to serial port (219); Step 5: Compare data and determine whether there is an abnormality: The host computer (4) compares the received collected data with the predetermined instruction data one by one to obtain the test result of the computer board (1) to be tested, and completes the control and operation test of the computer board (1) to be tested.

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