Piezoelectric fan test method, system, apparatus, and computer storage medium

Abstract

This application discloses a piezoelectric fan testing method, system, device, and computer storage medium, relating to the field of piezoelectric fan testing technology. It is applied to a piezoelectric fan testing system, which includes a parameter testing module. The module acquires a frequency sweep control command from the piezoelectric fan under test and determines its resonant frequency based on the command. Test output parameters are determined based on the resonant frequency and preset output parameters. The parameter testing module is then controlled according to these parameters to achieve the testing of the piezoelectric fan under test. This application improves the efficiency of piezoelectric fan testing.

Description

Technical Field

[0001] This application relates to the field of piezoelectric fan testing technology, and in particular to a piezoelectric fan testing method, system, device and computer storage medium. Background Technology

[0002] As the application of piezoelectric fan testing becomes more widespread, users are placing higher demands on piezoelectric fan testing methods.

[0003] Traditional piezoelectric fan testing methods involve manually adjusting the fan (i.e., manually outputting different frequencies to determine the resonant frequency), followed by pressure and flow rate tests. This method has drawbacks, as it requires manual adjustment, leading to low testing efficiency.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this application is to provide a piezoelectric fan testing method, system, device, and computer storage medium, aiming to solve the technical problem of low efficiency in piezoelectric fan testing.

[0006] To achieve the above objectives, this application provides a piezoelectric fan testing method. The piezoelectric fan testing method is applied to a piezoelectric fan testing system, which includes a parameter testing module. The piezoelectric fan testing method includes: Obtain the frequency sweep control command of the piezoelectric fan under test, and determine the resonant frequency point of the piezoelectric fan under test based on the frequency sweep control command; The test output parameters are determined based on the resonant frequency and preset output parameters, and the parameter test module is controlled according to the test output parameters to achieve the test of the piezoelectric fan under test.

[0007] In one embodiment, the frequency sweep control command includes instructions to control different frequency values ​​to the piezoelectric fan under test, and the step of determining the resonant frequency of the piezoelectric fan under test based on the frequency sweep control command includes: For each frequency value, obtain the first actual power value of the pressure fan under test; The maximum value among the first actual power values ​​is determined as the maximum power value, and the frequency value corresponding to the maximum power value is determined as the resonant frequency of the piezoelectric fan under test.

[0008] In one embodiment, the step of determining the test output parameters based on the resonant frequency and preset output parameters includes: Determine the second actual power value of the pressure fan under test under the control of the resonant frequency and different output voltage values; When the second actual power value meets the preset output parameters, the target output voltage corresponding to the second actual power value and the resonant frequency point are used as test output parameters.

[0009] In one embodiment, the piezoelectric fan test includes a pressure test and a flow rate test, and the step of controlling the parameter test module according to the test output parameters includes: When the piezoelectric fan test is the pressure test, the solenoid valve in the parameter test module is controlled to be in the pressure conducting state. In the pressure conducting state, the actual pressure value collected by the differential pressure sensor in the parameter test module is obtained as the operating pressure value of the piezoelectric fan under test. The test output parameter is used to control the piezoelectric fan under test in the pressure conducting state. When the piezoelectric fan test is the flow test, the solenoid valve in the parameter test module is controlled to be in the flow conduction state. In the flow conduction state, the actual flow value collected by the flow meter in the parameter test module is obtained as the operating flow value of the piezoelectric fan under test. The test output parameter is used to control the piezoelectric fan under test in the flow conduction state.

[0010] Furthermore, to achieve the above objectives, this application also provides a piezoelectric fan testing system, which includes a parameter testing module and a test controller. The test controller is connected to the parameter testing module and the piezoelectric fan under test. The piezoelectric fan under test is disposed in the parameter testing module. The test controller includes: The frequency point determination unit is used to acquire the frequency sweep control command of the piezoelectric fan under test, and determine the resonant frequency point of the piezoelectric fan under test based on the frequency sweep control command; The fan testing unit is used to determine the test output parameters based on the resonant frequency and preset output parameters, and to perform test control on the parameter testing module based on the test output parameters, so as to realize the test of the piezoelectric fan under test.

[0011] In one embodiment, the parameter testing module includes: The mounting fixture is used to install the electric fan whose pressure is to be tested. A flow meter, wherein the air inlet of the flow meter is located at the air outlet of the electric fan under test, and the data port of the flow meter is connected to the test controller; A differential pressure sensor is connected to the outlet of the flow meter; A solenoid valve is disposed between the differential pressure sensor and the air outlet of the flow meter and is connected to the test controller. The solenoid valve is used to control the air outlet of the flow meter to form an air passage with the differential pressure sensor when the solenoid valve is in the pressure conducting state, and to control the air outlet of the flow meter to form an air passage with the atmospheric environment when the solenoid valve is in the flow conducting state.

[0012] In one embodiment, the parameter testing module further includes: An air outlet grille, the first end of which is disposed at the air outlet position of the electric fan under test, wherein an air inlet is present between the air outlet grille and the air outlet position of the electric fan under test; A fan exhaust duct, the first end of which is connected to the second end of the air outlet grille, and the second end of which is connected to the air inlet of the flow meter.

[0013] In one embodiment, the test controller includes: An industrial control computer, the first end of which is connected to the differential pressure sensor and flow meter in the parameter testing module; A signal generator, wherein the first end of the signal generator is connected to the first end of the industrial control computer; A voltage amplifier, wherein the first terminal of the voltage amplifier is connected to the second terminal of the signal generator, and the second terminal of the voltage amplifier is connected to the input terminal of the pressure fan under test; A power meter, the first end of which is connected to the input end of the electric fan under test, and the second end of which is connected to the first end of the industrial control computer.

[0014] In addition, to achieve the above objectives, this application also provides a piezoelectric fan testing device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the piezoelectric fan testing method described above.

[0015] In addition, to achieve the above objectives, this application also provides a computer storage medium storing a piezoelectric fan testing program, wherein when the piezoelectric fan testing program is executed by a processor, it implements the steps of the piezoelectric fan testing method described above.

[0016] This application provides a piezoelectric fan testing method applied to a piezoelectric fan testing system. The system includes a parameter testing module. The method acquires a frequency sweep control command from the piezoelectric fan under test and determines its resonant frequency based on this command. Test output parameters are then determined based on the resonant frequency and preset output parameters. Finally, the parameter testing module is controlled based on these parameters to complete the testing of the piezoelectric fan. This method, by acquiring the frequency sweep control command and determining the resonant frequency under its control, then determining the test output parameters based on the resonant frequency and preset output parameters, and finally controlling the parameter testing module based on these parameters, completes the testing of the piezoelectric fan. This avoids the need for manual adjustment of the piezoelectric fan. This piezoelectric fan testing method can reduce the time spent on manual debugging by determining the resonant frequency point under the control of the frequency sweep control command. Furthermore, the test output parameters are determined based on the resonant frequency point and preset output parameters to complete the test of the piezoelectric fan under test, thereby making the whole process intelligent and improving the efficiency of piezoelectric fan testing. Attached Figure Description

[0017] Figure 1 This is a schematic flowchart of the first embodiment of the piezoelectric fan testing method of this application; Figure 2 This is a schematic diagram of the piezoelectric fan testing system of this application; Figure 3 This is a schematic diagram of a unit of the test controller in the piezoelectric fan test system of this application; Figure 4 This is a schematic diagram of the parameter testing module in the piezoelectric fan testing system of this application; Figure 5 This is another design schematic diagram of the parameter testing module in the piezoelectric fan testing system of this application; Figure 6 This is a test schematic diagram of the piezoelectric fan test system of this application; Figure 7 This is another test schematic diagram of the piezoelectric fan test system of this application; Figure 8 This is a schematic diagram of the overall design of the piezoelectric fan testing system of this application; Figure 9 This is a schematic diagram of the structure of the voltage electric fan testing equipment in this application.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0019] Explanation of icon numbers: 1001. Processing device; 1002. Read-only memory; 1003. Storage device; 1004. Random access memory; 1005. Bus; 1006. Input / output interface; 1007. Input device; 1008. Output device; 1009. Communication device; 10. Test controller; 20. Parameter test module; 100. Test fan; 21. Flow meter; 22. Solenoid valve; 23. Differential pressure sensor; 24. Air outlet grille; 11. Industrial computer; 12. Signal generator; 13. Voltage amplifier; 14. Power meter. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0021] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Common testing methods for piezoelectric fans typically involve manual intervention throughout the testing process. This begins with repeatedly adjusting the signal generator manually to determine the corresponding power value based on each frequency. The frequency corresponding to the maximum power value is then identified as the resonant frequency, and subsequent tests are conducted based on this resonant frequency. In other words, different performance parameters are tested under different test scenarios or instruments based on the resonant frequency. This entire testing process requires manual intervention, a considerable amount of time for testing and adjustments, and testing in various scenarios.

[0023] The solution in this application embodiment is as follows: By acquiring the frequency sweep control command of the piezoelectric fan under test, the resonant frequency point determined under the control of the frequency sweep control command can be determined. Based on the resonant frequency point and preset output parameters, test output parameters are determined. Finally, the parameter testing module can be controlled to perform testing based on the test output parameters, thereby completing the test of the piezoelectric fan under test and avoiding the need for manual adjustment of the piezoelectric fan. This piezoelectric fan testing method can reduce the time spent on manual adjustment by using the resonant frequency point determined under the control of the frequency sweep control command. Furthermore, by determining the test output parameters based on the resonant frequency point and preset output parameters, the test of the piezoelectric fan under test is completed, thus automating the entire process and improving the efficiency of piezoelectric fan testing.

[0024] It should be noted that the executing entity in this embodiment can be a computing server with data processing, network communication, and program execution functions, such as a controller used for testing piezoelectric fans. The following description uses a controller (such as a common controller or cloud processor) as an example to illustrate this embodiment and the subsequent embodiments.

[0025] Based on this, this application provides a piezoelectric fan testing method, referring to... Figure 1 , Figure 1 This is a schematic flowchart of the first embodiment of the piezoelectric fan testing method of this application. The piezoelectric fan testing method is applied to a piezoelectric fan testing system, which includes a parameter testing module. The piezoelectric fan testing method includes: Step S10: Obtain the sweep frequency control command of the voltage fan under test, and determine the resonant frequency of the voltage fan under test based on the sweep frequency control command; Step S20: Determine the test output parameters based on the resonant frequency and preset output parameters, and perform test control on the parameter test module based on the test output parameters to achieve the test of the pressure fan under test.

[0026] In this embodiment, the entire piezoelectric fan test is applied to a piezoelectric fan testing system, which includes a parameter testing module. This module tests the piezoelectric fan under test and can consist of specific test paths and related instruments, such as a flow meter for measuring flow rate and a pressure sensor for measuring pressure. When testing the piezoelectric fan, it is manually placed into the fixture within the parameter testing module, and the pressure head and fan are manually sealed to ensure the accuracy and effectiveness of the test. Then, a frequency sweep control command for the piezoelectric fan under test is generated within the test controller. Based on this command, a changing frequency value is output to the piezoelectric fan, and the power value of the fan during operation is collected. The frequency value at which the power value is maximum is taken as the resonant frequency point. The various parameters of the piezoelectric fan under test at the resonant frequency point are then tested. The frequency sweep control command is the instruction to output control waveforms of different frequency values ​​to control the piezoelectric fan under test, and the resonant frequency point is the frequency value at which the power value of the piezoelectric fan under test is maximum. After determining the resonant frequency, the test output parameters are determined based on the resonant frequency and preset output parameters. The test output parameters refer to the control parameters when testing the piezoelectric fan under test, which include at least the resonant frequency and voltage value. Then, the piezoelectric fan under test can be driven based on the resonant frequency and voltage value, and the control parameter test module can perform test control to realize the test of the piezoelectric fan under test. This can greatly improve the intelligence of the entire test and improve the efficiency of piezoelectric fan testing.

[0027] In another embodiment, the piezoelectric fan testing method of this application can be executed simultaneously for different piezoelectric fan testing systems. That is, only one test controller is used to control multiple parameter testing modules, which can simultaneously test multiple piezoelectric fans under test, thereby improving the efficiency of the entire test.

[0028] In one embodiment, the frequency sweep control command includes instructions to control different frequency values ​​to be transmitted to the voltage fan under test. The step of determining the resonant frequency of the voltage fan under test based on the frequency sweep control command includes: Step S11: For each frequency value, obtain the first actual power value of the pressure fan under test; Step S12: Determine the maximum value among the first actual power values ​​as the maximum power value, and determine the frequency value corresponding to the maximum power value as the resonant frequency of the piezoelectric fan under test.

[0029] In this embodiment, before testing, the resonant frequency of the piezoelectric fan under test is determined. At this time, the parameter testing module needs to be controlled to be in an atmospheric-ventilated state, meaning the solenoid valve in the parameter testing module can be controlled to be in a flow-through state. In short, the air movement of the piezoelectric fan under test is connected to the atmosphere when it is driven, thus avoiding errors in determining the resonant frequency due to the influence of air pressure in a sealed environment. In this state, signals of different frequencies can be output according to the frequency sweep control command to drive the piezoelectric fan under test. Then, for each frequency value, the first actual power value of the piezoelectric fan under test is obtained. The maximum value among the first actual power values ​​is then determined as the maximum power value, and the frequency value corresponding to the maximum power value is determined as the resonant frequency of the piezoelectric fan under test. Here, the first actual power value refers to the output power of the piezoelectric fan under test driven at a certain frequency, and the maximum power value refers to the power value among the frequency values ​​of the frequency sweep control command that maximizes the output power of the piezoelectric fan under test. Therefore, the frequency value corresponding to the maximum power value is the resonant frequency of the piezoelectric fan under test. For example, the frequency sweep control command is a coarse frequency sweep signal with a fixed output voltage (e.g., 10Vpp) (frequency sweep range: 29±2KHz, step 100Hz), and the signal output type is a square wave. Under the control of the coarse frequency sweep signal, the first actual power value of each frequency under 29±2KHz can be determined. Then, the maximum power value can be determined from the first actual power value. If the maximum power value is A, then the frequency corresponding to power A is determined to be 30KHz. Finally, 30KHz is determined to be the resonant frequency of the piezoelectric fan under test. This efficiently determines the resonant frequency of the piezoelectric fan under test, ensuring the efficiency of the entire test.

[0030] In another embodiment, since the maximum power value can reflect the working effect of the pressure fan under test, a flow velocity sensor can be installed at the air outlet of the pressure fan. When the flow velocity value collected by the flow velocity sensor meets a predefined flow velocity value, the frequency value at this time is determined as the resonant frequency of the pressure fan under test. Of course, the resonant frequency of the pressure fan under test can also be determined based on the frequency value corresponding to the optimal power during actual operation. Other conditions can also be used to determine the resonant frequency, which is not limited here.

[0031] This embodiment provides a piezoelectric fan testing method applied to a piezoelectric fan testing system. The piezoelectric fan testing system includes a parameter testing module. The system acquires a sweep frequency control command from the piezoelectric fan under test and determines its resonant frequency based on the command. Test output parameters are determined based on the resonant frequency and preset output parameters. The parameter testing module is then controlled to perform testing based on these parameters, thus completing the testing of the piezoelectric fan under test. This method acquires the sweep frequency control command, determines the resonant frequency under its control, determines the test output parameters based on the resonant frequency and preset output parameters, and finally controls the parameter testing module to complete the testing. This avoids the need for manual adjustment of the piezoelectric fan. This method reduces manual adjustment time by using the resonant frequency determined by the sweep frequency control command. Furthermore, determining the test output parameters based on the resonant frequency and preset output parameters automates the entire process, improving the efficiency of piezoelectric fan testing.

[0032] Furthermore, based on the first embodiment of this application described above, a second embodiment of the piezoelectric fan testing method of this application is proposed. In this embodiment, the step of determining the test output parameters according to the resonant frequency and preset output parameters includes: Step S21: Determine the resonant frequency and the second actual power value of the electric fan under test under different output voltage values. Step S22: When the second actual power value meets the preset output parameters, the target output voltage and resonant frequency corresponding to the second actual power value are used as test output parameters.

[0033] In this embodiment, after determining the resonant frequency, the required test output parameters are determined based on the resonant frequency. Specifically, the second actual power value of the piezoelectric fan under test is determined under different output voltage values ​​and the resonant frequency. Then, when the second actual power value meets the preset output parameters, the target output voltage and resonant frequency corresponding to the second actual power value are used as the test output parameters. For example, the resonant frequency F1 of the piezoelectric fan is used, and an initial voltage of 20V is set for testing. The output voltage of the signal generator is automatically adjusted (in 0.01V steps) to determine the second actual power value at each voltage. For instance, if the second actual power value is 100mW under the control of the resonant frequency F1 and the output voltage V1, the target output voltage and resonant frequency corresponding to the second actual power value are used as the test output parameters. That is, the target output voltage is the output voltage V1, and the preset output parameter is the power value of 100mW. Of course, the preset output parameters can also be adaptively set according to the actual situation. For example, to obtain the operating characteristics of the fan under test at a specific power value, where the power value is the power value when the fan under test is commonly operating, other conditions can also be set, such as the test output parameters at a certain wind speed, meaning the preset output parameter is a wind speed value. Furthermore, the test output parameters can be determined for different needs and resonant frequency points to ensure the accuracy of subsequent tests on the fan under test.

[0034] Furthermore, the piezoelectric fan test includes pressure testing and flow rate testing. The steps for controlling the parameter testing module based on the test output parameters include: Step S23: When the piezoelectric fan test is a pressure test, the solenoid valve in the control parameter test module is in the pressure conduction state. In the pressure conduction state, the actual pressure value collected by the differential pressure sensor in the parameter test module is used as the operating pressure value of the piezoelectric fan under test. The test output parameters are used to control the piezoelectric fan under test in the pressure conduction state. Step S24: When the piezoelectric fan test is a flow test, the solenoid valve in the control parameter test module is in the flow conduction state. In the flow conduction state, the actual flow value collected by the flow meter in the parameter test module is obtained as the operating flow value of the piezoelectric fan under test. The test output parameters are used to control the piezoelectric fan under test in the flow conduction state.

[0035] In this embodiment, the piezoelectric fan test includes a pressure test to measure the pressure value of the piezoelectric fan under test and a flow test to measure the flow rate of the piezoelectric fan under test. When the piezoelectric fan test is a pressure test, the solenoid valve in the control parameter test module is in a pressure-conducting state. In the pressure-conducting state, the actual pressure value collected by the differential pressure sensor in the parameter test module is used as the operating pressure value of the piezoelectric fan under test. The test output parameter is used to control the piezoelectric fan under test in the pressure-conducting state. That is, when the pressure value of the piezoelectric fan under test is tested, the solenoid valve in the parameter test module can be controlled to be in a pressure-conducting state. At this time, the air flowing through the piezoelectric fan under test is transmitted to the differential pressure sensor, and the actual pressure value collected by the differential pressure sensor is used as the operating pressure value of the piezoelectric fan under test. In another embodiment, when the piezoelectric fan test is a flow rate test, the solenoid valve in the control parameter test module is in the flow-conducting state. In this state, the actual flow rate value collected by the flow meter in the parameter test module is used as the operating flow rate value of the piezoelectric fan under test. The test output parameters are used to control the piezoelectric fan under test in the flow-conducting state. That is, to test the flow rate value of the piezoelectric fan under test, the solenoid valve in the parameter test module can be controlled to be in the flow-conducting state, allowing air to circulate to the atmosphere during the operation of the piezoelectric fan. The actual flow rate value collected by the flow meter at this time is then used as the operating flow rate value of the piezoelectric fan under test. Therefore, the entire process, through automatic control of signal frequency and voltage, and real-time acquisition of the piezoelectric fan power value by the power meter, and real-time feedback of the power value to the test software, can control the test time to within 20 seconds. Compared with traditional manual testing, which involves manually setting the frequency and voltage and repeatedly adjusting the signal generator frequency and voltage according to the product power, wasting time (approximately 120 seconds), the test efficiency is directly improved by more than 80%.

[0036] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the piezoelectric fan testing method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0037] This application also provides a piezoelectric fan testing system, referring to... Figure 2 , Figure 2 This is a schematic diagram of the piezoelectric fan testing system of this application. The piezoelectric fan testing system includes a parameter testing module and a test controller. The test controller is connected to the parameter testing module and the piezoelectric fan under test. The piezoelectric fan under test is set in the parameter testing module, as shown in the diagram. Figure 3 The test controller includes: The frequency point determination unit A10 is used to acquire the frequency sweep control command of the piezoelectric fan under test, and determine the resonant frequency point of the piezoelectric fan under test based on the frequency sweep control command. The fan test unit A20 is used to determine the test output parameters based on the resonant frequency and preset output parameters, and to control the parameter test module according to the test output parameters in order to realize the test of the pneumatic fan under test.

[0038] It is worth noting that the test controller acquires the frequency sweep control command from the piezoelectric fan under test, thereby determining the resonant frequency point under the control of the frequency sweep control command. Based on the resonant frequency point and preset output parameters, it determines the test output parameters. Finally, it controls the parameter testing module according to the test output parameters, thus completing the test of the piezoelectric fan under test and avoiding the need for manual adjustment. This piezoelectric fan testing method reduces the time spent on manual adjustment by using the resonant frequency point determined under the control of the frequency sweep command. Furthermore, by determining the test output parameters based on the resonant frequency point and preset output parameters, the entire process is made intelligent, improving the efficiency of piezoelectric fan testing.

[0039] In one embodiment, reference is made to Figure 4 , Figure 4 This is a schematic diagram of a parameter testing module in the piezoelectric fan testing system of this application. The parameter testing module 20 includes: Install the fixture, and install the electric fan 200 under test inside the fixture; The flow meter 21 has its air inlet located at the air outlet of the electric fan 200 under test, and its data port is connected to the test controller 10. Differential pressure sensor 23 is connected to the air outlet of flow meter 21; Solenoid valve 22 is located between differential pressure sensor 23 and the air outlet of flow meter 21 and is connected to test controller 10. Solenoid valve 22 is used to control the air outlet of flow meter 21 to form an air passage with differential pressure sensor 23 when solenoid valve 22 is in pressure conduction state, and to control the air outlet of flow meter 21 to form an air passage with atmospheric environment when solenoid valve 22 is in flow conduction state.

[0040] For example, the parameter testing module for testing the pressure-testing electric fan 200 includes a mounting fixture to fix the fan 200 in place for subsequent testing. The inlet of the flow meter 21 is positioned at the outlet of the fan 200, allowing the air moving during operation of the fan 200 to pass through the flow meter 21 for flow measurement when flow testing is required; and allowing the air moving during operation of the fan 200 to reach the differential pressure sensor 23 for pressure measurement when pressure testing is required. The differential pressure sensor 23 is connected to the outlet of the flow meter 21, allowing pressure measurement of the fan 200 to be achieved through the air exiting this outlet. Figure 4 As shown in the diagram, the thick dark line indicates the air transmission channel, and the dashed line indicates that other devices or components can be installed in the middle. Of course, a solenoid valve 22 can be designed and positioned between the differential pressure sensor 23 and the air outlet of the flow meter 21, and connected to the test controller 10. When the solenoid valve 22 is in the pressure-conducting state, it controls the air outlet of the flow meter 21 to form an air passage with the differential pressure sensor 23; when the solenoid valve 22 is in the flow-conducting state, it controls the air outlet of the flow meter 21 to form an air passage with the atmospheric environment. Thus, through the control of the solenoid valve 22, the accuracy of the entire pressure and flow test can be ensured.

[0041] Furthermore, refer to Figure 5 , Figure 5 This is another design schematic diagram of the parameter testing module in the piezoelectric fan testing system of this application. The parameter testing module 20 also includes: An air outlet grille 24 is provided at the air outlet of the pressure-to-be-tested electric fan 200, and an air inlet is provided between the air outlet grille 24 and the air outlet of the pressure-to-be-tested electric fan 200. The fan exhaust duct has its first end connected to the second end of the air outlet grille 24, and its second end connected to the air inlet of the flow meter 21.

[0042] In this embodiment, the parameter testing module 20 is also designed with an air outlet grille for the piezoelectric fan. The air outlet grille is located between the piezoelectric fan and the fan's air outlet duct, ensuring both an effective air intake channel for the piezoelectric fan and that the air outlet channel is not obstructed. Alternatively, the air outlet grille 24 and the fan's air outlet duct can be integrated into the air inlet of the flow meter 21 to reduce the overall module size. For example, the air inlet between the air outlet grille 24 and the air outlet position of the piezoelectric fan 200 under test can be set as a unidirectional air inlet (i.e., only for air intake), thereby simulating the closed environment used by the piezoelectric fan to achieve accurate pressure measurement.

[0043] For example, refer to Figure 6 , Figure 6 This is a test schematic diagram of the piezoelectric fan testing system of this application. In this state, the solenoid valve 22 is in the flow-conducting state, controlling the air outlet of the flow meter 21 to form an air passage with the atmospheric environment, thereby completing the flow rate test. In another embodiment, refer to... Figure 7 , Figure 7This is another test schematic diagram of the piezoelectric fan testing system of this application. In this case, the solenoid valve 22 is in the pressure-conducting state, controlling the air outlet of the flow meter 21 to form an air passage with the differential pressure sensor 23, thereby completing the pressure test. That is, the entire module design can achieve flow and pressure compatible testing through solenoid valve switching. When testing flow rate, the solenoid valve is controlled to open the flow meter's output air path to the atmosphere; when testing pressure, the solenoid valve is controlled to open the flow meter's output air path to the differential pressure sensor, achieving flow and pressure compatible testing. It also provides a test environment for determining the resonant frequency, greatly improving the functionality of the entire parameter testing module.

[0044] In another embodiment, reference Figure 8 , Figure 8 This is a schematic diagram of the overall design of the piezoelectric fan testing system of this application. The test controller 10 includes: Industrial computer 11, the first end of which is connected to differential pressure sensor 23 and flow meter 21 in parameter testing module 20; Signal generator 12, the first end of which is connected to the first end of industrial control computer 11; Voltage amplifier 13, the first terminal of voltage amplifier 13 is connected to the second terminal of signal generator 12, and the second terminal of voltage amplifier 13 is connected to the input terminal of the pressure fan 200 under test; Power meter 14, the first end of power meter 14 is connected to the input end of the electric fan 200 under test, and the second end of power meter 14 is connected to the first end of industrial control computer 11.

[0045] In this embodiment, the test controller 10 consists of an industrial computer 11, a signal generator 12, a voltage amplifier 13, and a power meter 14. The industrial computer 11 can be a large controller used to control the signal generator 12 to output the required sweep frequency control commands and test output parameters. The signal generator 12 and voltage amplifier 13 can output corresponding signals to the piezoelectric fan under test 200 according to the sweep frequency control commands and test output parameters, thereby controlling the piezoelectric fan 200 to operate. Simultaneously, while the piezoelectric fan 200 is operating, the power value is collected by the power meter 14 and transmitted back to the industrial computer 11. The industrial computer 11 then determines the resonant frequency and test output parameters based on the power value, thus completing the entire intelligent piezoelectric fan testing process. Of course, the entire test controller 10 can also have other components, which are not limited here.

[0046] The controller provided in this application employs the piezoelectric fan testing method described in the above embodiments, aiming to solve the technical problem of low efficiency in piezoelectric fan testing. Compared with the prior art, the beneficial effects of the controller provided in this application are the same as those of the piezoelectric fan testing method provided in the above embodiments, and other technical features of the controller are the same as those disclosed in the methods described in the above embodiments, and will not be repeated here.

[0047] This application provides a piezoelectric fan testing device, which includes: at least one processor; and a memory communicatively connected to the at least one processor. The memory stores instructions executable by the at least one processor, which, when executed, enables the at least one processor to perform the piezoelectric fan testing method described in Embodiment 1 above.

[0048] The following is for reference. Figure 9 The diagram illustrates a structural schematic of a piezoelectric fan testing device suitable for implementing embodiments of this application. The piezoelectric fan testing device in these embodiments may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), and in-vehicle terminals (e.g., in-vehicle navigation terminals), as well as fixed terminals such as digital TVs and desktop computers. Figure 9 The piezoelectric fan testing equipment shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0049] like Figure 9As shown, the piezoelectric fan testing equipment may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory 1002 or a program loaded from a storage device 1003 into a random access memory 1004. The random access memory 1004 also stores various programs and data required for the operation of the piezoelectric fan testing equipment. The processing unit 1001, the read-only memory 1002, and the random access memory 1004 are interconnected via a bus 1005. An input / output interface 1006 is also connected to the bus. Typically, the following systems can be connected to the input / output interface 1006: input devices 1007 including, for example, a touch screen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 1003 including, for example, magnetic tape, hard disk, etc.; and communication devices 1009. Communication device 1009 allows the piezoelectric fan testing equipment to communicate wirelessly or wiredly with other piezoelectric fan testing equipment to exchange data. Although the figures show piezoelectric fan testing equipment with various systems, it should be understood that implementation or possession of all the systems shown is not required. More or fewer systems may be implemented alternatively.

[0050] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or loaded from storage device 1003, or loaded from read-only memory 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0051] The piezoelectric fan testing equipment provided in this application employs the piezoelectric fan testing method described in the above embodiments, aiming to solve the technical problem of low efficiency in piezoelectric fan testing. Compared with the prior art, the beneficial effects of the piezoelectric fan testing equipment provided in this application are the same as those of the piezoelectric fan testing method provided in the above embodiments. Furthermore, other technical features of this piezoelectric fan testing equipment are the same as those disclosed in the above embodiments, and will not be repeated here.

[0052] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0053] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0054] This application provides a computer storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, which are used to execute the piezoelectric fan testing method in the above embodiments.

[0055] The computer storage medium provided in this application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device, or apparatus. The program code contained on the computer storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), or any suitable combination thereof.

[0056] The aforementioned computer storage medium may be included in the piezoelectric fan testing equipment or may exist independently and not assembled into the piezoelectric fan testing equipment.

[0057] The aforementioned computer storage medium carries one or more programs. When these programs are executed by the piezoelectric fan testing equipment, the piezoelectric fan testing equipment performs the following: Obtain the frequency sweep control command of the fan under test, and determine the resonant frequency of the fan under test based on the frequency sweep control command; The test output parameters are determined based on the resonant frequency and preset output parameters, and the parameter test module is controlled according to the test output parameters to achieve the test of the pressure fan under test.

[0058] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof. These programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0059] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation that may be implemented in systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0060] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0061] The computer storage medium provided in this application stores computer-readable program instructions (i.e., a computer program) for executing the above-described piezoelectric fan testing method, aiming to solve the technical problem of low efficiency in piezoelectric fan testing. Compared with the prior art, the beneficial effects of the computer storage medium provided in this application are the same as those of the piezoelectric fan testing method provided in the above embodiments, and will not be repeated here.

[0062] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the piezoelectric fan testing method described above.

[0063] The computer program product provided in this application aims to solve the technical problem of poor test results for piezoelectric fans. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the piezoelectric fan test method provided in the above embodiments, and will not be repeated here.

[0064] The above are only some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A method for testing piezoelectric fans, characterized in that, The piezoelectric fan testing method is applied to a piezoelectric fan testing system, which includes a parameter testing module. The piezoelectric fan testing method includes: Obtain the frequency sweep control command of the piezoelectric fan under test, and determine the resonant frequency point of the piezoelectric fan under test based on the frequency sweep control command; The test output parameters are determined based on the resonant frequency and preset output parameters, and the parameter test module is controlled according to the test output parameters to achieve the test of the piezoelectric fan under test.

2. The piezoelectric fan testing method as described in claim 1, characterized in that, The frequency sweep control command includes instructions to control different frequency values ​​to the piezoelectric fan under test. The step of determining the resonant frequency of the piezoelectric fan under test based on the frequency sweep control command includes: For each frequency value, obtain the first actual power value of the pressure fan under test; The maximum value among the first actual power values ​​is determined as the maximum power value, and the frequency value corresponding to the maximum power value is determined as the resonant frequency of the piezoelectric fan under test.

3. The piezoelectric fan testing method as described in claim 1, characterized in that, The step of determining the test output parameters based on the resonant frequency and preset output parameters includes: Determine the second actual power value of the pressure fan under test under the control of the resonant frequency and different output voltage values; When the second actual power value meets the preset output parameters, the target output voltage corresponding to the second actual power value and the resonant frequency point are used as test output parameters.

4. The piezoelectric fan testing method as described in claim 3, characterized in that, The piezoelectric fan test includes pressure testing and flow rate testing. The step of controlling the parameter testing module based on the test output parameters includes: When the piezoelectric fan test is the pressure test, the solenoid valve in the parameter test module is controlled to be in the pressure conducting state. In the pressure conducting state, the actual pressure value collected by the differential pressure sensor in the parameter test module is obtained as the operating pressure value of the piezoelectric fan under test. The test output parameter is used to control the piezoelectric fan under test in the pressure conducting state. When the piezoelectric fan test is the flow test, the solenoid valve in the parameter test module is controlled to be in the flow conduction state. In the flow conduction state, the actual flow value collected by the flow meter in the parameter test module is obtained as the operating flow value of the piezoelectric fan under test. The test output parameter is used to control the piezoelectric fan under test in the flow conduction state.

5. A piezoelectric fan testing system, characterized in that, The piezoelectric fan testing system includes a parameter testing module and a test controller. The test controller is connected to the parameter testing module and the piezoelectric fan under test. The piezoelectric fan under test is disposed in the parameter testing module. The test controller includes: The frequency point determination unit is used to acquire the frequency sweep control command of the piezoelectric fan under test, and determine the resonant frequency point of the piezoelectric fan under test based on the frequency sweep control command; The fan testing unit is used to determine the test output parameters based on the resonant frequency and preset output parameters, and to perform test control on the parameter testing module based on the test output parameters, so as to realize the test of the piezoelectric fan under test.

6. The piezoelectric fan testing system as described in claim 5, characterized in that, The parameter testing module includes: The mounting fixture is used to install the electric fan whose pressure is to be tested. A flow meter, wherein the air inlet of the flow meter is located at the air outlet of the electric fan under test, and the data port of the flow meter is connected to the test controller; A differential pressure sensor is connected to the outlet of the flow meter; A solenoid valve is disposed between the differential pressure sensor and the air outlet of the flow meter and is connected to the test controller. The solenoid valve is used to control the air outlet of the flow meter to form an air passage with the differential pressure sensor when the solenoid valve is in the pressure conducting state, and to control the air outlet of the flow meter to form an air passage with the atmospheric environment when the solenoid valve is in the flow conducting state.

7. The piezoelectric fan testing system as described in claim 6, characterized in that, The parameter testing module also includes: An air outlet grille, the first end of which is disposed at the air outlet position of the electric fan under test, wherein an air inlet is present between the air outlet grille and the air outlet position of the electric fan under test; A fan exhaust duct, the first end of which is connected to the second end of the air outlet grille, and the second end of which is connected to the air inlet of the flow meter.

8. The piezoelectric fan testing system as described in claim 5, characterized in that, The test controller includes: An industrial control computer, the first end of which is connected to the differential pressure sensor and flow meter in the parameter testing module; A signal generator, wherein the first end of the signal generator is connected to the first end of the industrial control computer; A voltage amplifier, wherein the first terminal of the voltage amplifier is connected to the second terminal of the signal generator, and the second terminal of the voltage amplifier is connected to the input terminal of the pressure fan under test; A power meter, the first end of which is connected to the input end of the electric fan under test, and the second end of which is connected to the first end of the industrial control computer.

9. A piezoelectric fan testing device, characterized in that, The piezoelectric fan testing device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the piezoelectric fan testing method as described in any one of claims 1 to 4.

10. A computer storage medium, characterized in that, The computer storage medium stores a piezoelectric fan test program, wherein when the piezoelectric fan test program is executed by the processor, it implements the steps of the piezoelectric fan test method as described in any one of claims 1 to 4.

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