Testing system and method for magneto-electric coupling energy acquisition device

Abstract

The invention discloses a test system and method for a magneto-electric coupling energy acquisition device. The test system comprises a test box body and a magnetic field generation unit which are arranged on a test platform; the magnetic field generating unit releases a magnetic field towards the test box body; the test box body is externally connected with a humidity simulation device through a pipeline; a temperature simulation device is arranged in the test box body; the magnetic field generation unit, the monitoring unit and the control unit are electrically connected with the output end of the control unit; the control unit regulates and controls the output power of the magnetic field generation unit according to the magnetic field intensity information in the test box body, regulates and controls the temperature simulation device according to the actual temperature information and the actual humidity information in the test box body, and regulates and controls the humidity simulation device according to the actual temperature information and the actual humidity information; according to the invention, the temperature, humidity and excitation magnetic field change in the test environment can be accurately controlled, and the performance evaluation of the magneto-electric coupling energy acquisition device can be effectively carried out.

Description

Technical Field

[0001] The present invention belongs to the technical field of electromagnetic device testing, and in particular relates to a testing system and method for a magneto-electromechanical coupling energy harvesting device. Background Art

[0002] Magneto-electromechanical coupling (MEEM) energy harvesters utilize magnetic torque and electromagnetic induction principles to convert ambient magnetic field energy into relative motion between a coil and a permanent magnet, thereby generating electrical energy. In practical applications, temperature, humidity, and external excitation are key factors affecting the device's reliability. Specifically, the magnetic properties of the permanent magnets and the coil resistance are susceptible to temperature fluctuations. Long-term storage or operation of MEEM energy harvesters in humid environments can also lead to device performance degradation. External excitation accelerates device fatigue failure, and excessive excitation can even cause fracture failure. These factors can alter the device's resonant frequency, reducing its output performance and, in severe cases, causing the device to malfunction. Therefore, in the development of MEEM energy harvesters, in-depth research into the mechanisms by which these factors influence device reliability is crucial to accurately select device materials and optimize structural design, ultimately improving device stability and reliability.

[0003] Existing technologies utilize temperature and humidity control devices to control the environment surrounding the device under test, allowing for device measurements at specific temperatures and humidity levels. These test systems or devices typically focus on testing under simple environmental variables (such as air pressure, humidity, and temperature). Due to the strong coupling between temperature and humidity, existing technologies cannot precisely control the temperature and humidity within the test chamber. Furthermore, existing technologies lack a miniaturized test system that integrates temperature, humidity, and magnetic field strength to enable long-term operational stability testing of magneto-electromechanical coupled energy harvesting devices under independent magnetic field excitation. Summary of the Invention

[0004] The present invention provides a testing system and method for a magneto-electromechanical coupling energy harvesting device, which can accurately control the changes in temperature, humidity and excitation magnetic field in the test environment, explore the influence mechanism of different environmental parameters on the performance of the magneto-electromechanical coupling energy harvesting device and the change law of working performance, thereby effectively evaluating the performance of the magneto-electromechanical coupling energy harvesting device.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A first aspect of the present invention provides a test system for a magneto-electromechanical coupling energy harvesting device, comprising a test platform, a monitoring unit, and a control unit; the monitoring unit is electrically connected to an input terminal of the control unit;

[0007] There is a test box and a magnetic field generating unit on the test platform; the magnetic field generating unit releases a magnetic field towards the test box; the test box is externally connected to a humidity simulation device for adjusting humidity through a pipeline; a temperature simulation device for adjusting temperature is provided inside the test box; the magnetic field generating unit, the humidity simulation device and the temperature simulation device are electrically connected to the output end of the control unit;

[0008] The monitoring unit is electrically connected with a magnetic field sensor, a temperature sensor and a humidity sensor; the magnetic field sensor detects the magnetic field intensity information inside the test box; the temperature sensor detects the actual temperature information inside the test box, and the humidity sensor detects the actual humidity information inside the test box. The monitoring unit sends the magnetic field intensity information, the actual temperature information and the actual humidity information to the control unit; the control unit adjusts the output power of the magnetic field generating unit according to the magnetic field intensity information, and at the same time adjusts the temperature simulation device according to the actual temperature information and the actual humidity information, and at the same time adjusts the humidity simulation device according to the actual temperature information and the actual humidity information.

[0009] Further, the magnetic field generating unit includes an information generator, a power amplifier and an electromagnetic coil that are electrically connected in sequence; the information generator is electrically connected to the control unit; the power amplifier amplifies the input information generated by the information generator and then inputs it to the electromagnetic coil, and a strong magnetic field is generated by the electromagnetic coil; a current limiting resistor is provided on the circuit connecting the power amplifier and the electromagnetic coil; the current limiting resistor is used to prevent the magnetic field generating unit from generating excessive current, prevent excessive current from being generated due to the low impedance of the electromagnetic coil, and then cause the electromagnetic coil to overheat or the power supply unit to be overloaded, ensuring the safe and stable operation of the magnetic field generating unit.

[0010] Further, the magnetic field generating unit is configured with a water cooling device; the water cooling device includes a condensing pipe, a circulating water pump and a radiator that are connected in sequence through pipelines; the condensing pipe is arranged around the electromagnetic coil, and the circulating water pump drives the coolant to circulate between the condensing pipe and the radiator.

[0011] Further, the humidity simulation device includes a humidity adjustment tank body, a humidifier and a dehumidifier; the humidifier is used to humidify the air inside the humidity adjustment tank body; the dehumidifier is used to dehumidify the air inside the humidity adjustment tank body; both ends of the humidity adjustment tank body are communicated with both ends of the test box through pipelines; a fan for circulating air is provided inside the humidity adjustment tank body; the fan, the humidifier and the dehumidifier are electrically connected to the output end of the control unit.

[0012] Further, the input ends of the humidifier and the dehumidifier are connected to the humidity adjustment tank body through pipelines; the output ends of the humidifier and the dehumidifier are connected to the input end of the blower through pipelines; the output end of the blower is connected to the humidity adjustment tank body through a pipeline; electromagnetic valves are arranged at the input ends of the humidifier and the dehumidifier; the electromagnetic valves, the humidifier and the dehumidifier are electrically connected to the control unit.

[0013] Further, the temperature simulation device includes a heater and a cooler; the heater and the cooler are electrically connected to the output end of the control unit, the heater and the cooler are distributed alternately on the side wall of the test chamber, and the control unit controls the heater and the cooler to work to adjust the temperature in the test chamber.

[0014] Further, a displacement adjustment device is arranged in the test chamber, and the displacement adjustment device includes a first longitudinal linear module, a second longitudinal linear module and a transverse linear module; both ends of the transverse linear module are respectively arranged on the sliding tables of the first longitudinal linear module and the second longitudinal linear module, the first longitudinal linear module and the second longitudinal linear module drive the transverse linear module to move synchronously, and a lifting mechanism is arranged on the transverse linear module; a rotation adjustment device for fixing the electromagnetic-mechanical coupling energy harvesting device is arranged on the lifting mechanism; the lifting device drives the rotation adjustment device and the electromagnetic-mechanical coupling energy harvesting device to lift.

[0015] Further, the rotation adjustment device includes an electric turntable that rotates in the horizontal direction; the electric turntable is arranged on the lifting mechanism, and a support frame is arranged on the electric turntable; rotating shafts are arranged on both sides of the mounting plate, and the rotating shafts are rotatably connected to the support frame, and the electromagnetic-mechanical coupling energy harvesting device is mounted on the mounting plate; a rotation adjustment motor drives the rotating shafts to rotate through a worm and worm gear, and the rotating shafts drive the mounting plate to rotate to adjust the pitching angle of the electromagnetic-mechanical coupling energy harvesting device; the electric turntable rotates in the horizontal direction to adjust the orientation of the electromagnetic-mechanical coupling energy harvesting device.

[0016] Further, the control unit simultaneously controls the temperature simulation device according to the actual temperature information and the actual humidity information, specifically including:

[0017] The control unit includes a temperature PI controller, a decoupling controller , a coupling controller and a temperature controller ; the temperature PI controller, the decoupling controller , the coupling controller and the temperature controller are electrically connected to an arithmetic exchanger; the input end of the arithmetic unit is electrically connected to the monitoring unit, and the output end of the arithmetic unit is electrically connected to the temperature simulation device;

[0018] The operation exchanger subtracts the actual temperature information and the set temperature information in the test chamber and inputs the result to the temperature PI controller to obtain temperature adjustment information; adds the temperature adjustment information and the compensation information of the influence of humidity change on temperature to obtain temperature correction information, and inputs the temperature correction information to the temperature controller to obtain heating control information; adds the heating control information and the compensation information of the influence of humidity change on temperature to re-obtain the set temperature information and control the temperature simulation device;

[0019] Decoupling controller Outputs the compensation information of the influence of the humidity change on temperature according to the humidity correction information, Coupling controller Outputs the compensation information of the influence of the humidity change on temperature according to the humidity correction information.

[0020] Furthermore, the control unit simultaneously controls the humidity simulation device according to the actual temperature information and the actual humidity information, specifically including:

[0021] The control unit includes a humidity PI controller, a decoupling controller , a coupling controller and a humidity controller ; the humidity PI controller, the decoupling controller , the coupling controller and the humidity controller are electrically connected to the operation exchanger; the output end of the arithmetic unit is electrically connected to the humidity simulation device;

[0022] The operation exchanger subtracts the actual humidity information and the set humidity information in the test chamber and inputs the result to the humidity PI controller to obtain humidity adjustment information; adds the humidity adjustment information and the compensation information of the influence of temperature on humidity to obtain humidity correction information, and inputs the humidity correction information to the humidity controller to obtain humidification control information; adds the humidification control information and the compensation information of the influence of temperature change on humidity to re-obtain the set humidity information and control the humidity simulation device;

[0023] Decoupling controller Outputs the compensation information of the influence of the temperature on humidity according to the temperature correction information, Coupling controller Outputs the compensation information of the influence of the changing temperature on humidity according to the temperature correction information.

[0024] Furthermore, an observation window is provided on the top or side wall of the test chamber, and a sealed glass is provided on the observation window.

[0025] Further, a feedthrough connector is provided on the side wall of the test box body, and the temperature sensor and the humidity sensor are electrically connected to the monitoring unit through the feedthrough connector.

[0026] The second aspect of the present invention provides a test method for a magnetoelectric coupling energy harvesting device, including:

[0027] After the magnetoelectric coupling energy harvesting device is placed in the test box body, controlling the magnetic field generating unit to release a magnetic field towards the test box body; detecting the magnetic field intensity information in the test box body through a magnetic field sensor, and regulating the output power of the magnetic field generating unit according to the magnetic field intensity information;

[0028] Using the temperature sensor and the humidity sensor to detect the actual temperature information and the actual humidity information of the test box body, and sending the actual temperature information and the actual humidity information to the control unit through the monitoring unit;

[0029] At the same time, controlling the temperature simulation device to regulate the temperature of the test box body according to the actual temperature information and the actual humidity information, and at the same time, controlling the humidity simulation device to regulate the humidity of the test box body according to the actual temperature information and the actual humidity information.

[0030] Further, controlling the temperature simulation device to regulate the temperature of the test box body according to the actual temperature information and the actual humidity information at the same time, specifically including:

[0031] The control unit includes a temperature PI controller, a decoupling controller , a coupling controller and a temperature controller ; the temperature PI controller, the decoupling controller , the coupling controller and the temperature controller are electrically connected to an arithmetic exchanger; the input end of the arithmetic unit is electrically connected to the monitoring unit, and the output end of the arithmetic unit is electrically connected to the temperature simulation device;

[0032] Subtracting the actual temperature information in the test box body from the temperature setting information and inputting the result into the temperature PI controller to obtain temperature adjustment information; adding the temperature adjustment information to the compensation information of the influence of humidity change on temperature to obtain temperature correction information, and inputting the temperature correction information into the temperature controller to obtain heating regulation information; adding the heating regulation information to the compensation information of the influence of humidity change on temperature to re-obtain the temperature setting information and regulating the temperature simulation device;

[0033] The decoupling controller outputs the compensation information of the influence of humidity change on temperature according to the humidity correction information, and the coupling controller outputs the compensation information of the influence of humidity change on temperature according to the humidity correction information.

[0034] Further, the humidity simulation device is controlled to regulate the humidity of the test chamber according to the actual temperature information and the actual humidity information, specifically including:

[0035] The control unit includes a humidity PI controller, a decoupling controller , a coupling controller and a humidity controller ; the humidity PI controller, the decoupling controller , the coupling controller and the humidity controller are electrically connected to the operation exchanger; the output end of the arithmetic unit is electrically connected to the humidity simulation device;

[0036] Subtract the actual humidity information in the test chamber from the set humidity information and input it to the humidity PI controller to obtain humidity adjustment information; add the humidity adjustment information to the compensation information of the influence of temperature on humidity to obtain humidity correction information, and input the humidity correction information to the humidity controller to obtain humidification regulation information; add the humidification regulation information to the compensation information of the influence of temperature change on humidity to re-obtain the set humidity information and regulate the humidity simulation device;

[0037] The decoupling controller outputs the compensation information of the influence of temperature on humidity according to the temperature correction information, and the coupling controller outputs the compensation information of the influence of the changing temperature on humidity according to the temperature correction information.

[0038] Compared with the prior art, the beneficial effects of the present invention are:

[0039] In the present invention, the control unit controls the magnetic field generating unit to release a magnetic field towards the test chamber; at the same time, the temperature simulation device is regulated according to the actual temperature information and the actual humidity information, and the humidity simulation device is regulated according to the actual temperature information and the actual humidity information; it can accurately control the temperature, humidity and excitation magnetic field changes in the test environment, explore the influence mechanism of different environmental parameters on the performance of the magnetoelectric coupling energy harvesting device and the change law of the working performance, so as to effectively evaluate the performance of the magnetoelectric coupling energy harvesting device. Description of the Drawings

[0040] Figure 1 is the structural diagram of a test system for a magnetoelectric coupling energy harvesting device provided in Embodiment 1;

[0041] Figure 2 is the magnetic field distribution simulation diagram of the electromagnetic coil provided in Embodiment 1;

[0042] Figure 3It is a graph showing the variation of the magnetic field intensity with distance when different currents are applied to the electromagnetic coil provided in Embodiment 1;

[0043] Figure 4 It is a control block diagram of temperature and humidity provided in Embodiment 1;

[0044] Figure 5 It is a structural diagram of the test platform provided in Embodiment 1;

[0045] Figure 6 It is a structural diagram of the displacement adjustment device and the rotation adjustment device provided in Embodiment 1;

[0046] Figure 7 It is a connection diagram of the humidifier and the dehumidifier provided in Embodiment 1;

[0047] Figure 8 It is a structural diagram of a test method for a magneto-electro-mechanical coupling energy harvesting device provided in Embodiment 2;

[0048] In the figure, 1 is the control unit, 11 is the computer, 12 is the processor, 2 is the power supply unit, 3 is the test platform, 31 is the test box, 311 is the observation window, 32 is the magnetic field generation unit, 321 is the electromagnetic coil, 322 is the information generator, 323 is the power amplifier, 324 is the current limiting resistor, 325 is the water cooling device, 33 is the humidity simulation device, 331 is the humidity adjustment tank, 332 is the fan, 333 is the dehumidifier, 334 is the humidifier, 335 is the solenoid valve, 336 is the blower, 34 is the temperature simulation device, 341 is the heater, 342 is the cooler, 4 is the monitoring unit, 5 is the data acquisition unit, 6 is the displacement adjustment device, 61 is the first longitudinal linear module, 62 is the second longitudinal linear module, 63 is the transverse linear module, 64 is the lifting mechanism, 7 is the rotation adjustment device, 71 is the electric turntable, 72 is the support frame, 73 is the mounting plate. Detailed implementation manners

[0049] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0050] Embodiment 1

[0051] As Figure 1 shown, the present embodiment provides a test system for a magneto-electro-mechanical coupling energy harvesting device, including a test platform 3, a monitoring unit 4, and a control unit 1; the test platform 3 and the monitoring unit 4 are communicatively connected to the control unit 1 through a data acquisition unit 5;

[0052] The control unit includes a computer 11 and a processor 12; the computer 11 serves as the system control and data analysis center, responsible for upper computer control of the entire test system, adjusting the working parameters of the test platform 3, and through real-time monitoring of the changes in the working parameters, combined with the processor 12, realizing feedback regulation of the temperature, humidity, and magnetic field intensity in the internal environment of the test platform 3, and automatically adjusting the system parameters according to the preset test conditions to maintain the stability of the test environment. The processor 12 can set different curves of environmental temperature, humidity, and magnetic field intensity changes to simulate complex environmental changes. At the same time, the computer 11 is built-in with data analysis software, which can perform real-time processing and analysis on the data of the magnetoelectric coupling energy collection device obtained by the data collection unit 5 and provide graphical result display.

[0053] A test box 31 and a magnetic field generating unit 32 are arranged on the test platform 3; the test box 31 is made of non-magnetic material to avoid interfering with the magnetic field distribution. The magnetic field generating unit 32 releases a magnetic field towards the test box 31; the test box 31 is externally connected to a humidity simulation device 33 through a pipeline, and the humidity of the test box 31 is adjusted through the humidity simulation device 33; a temperature simulation device 34 is arranged inside the test box 31, and the temperature of the test box 31 is adjusted through the temperature simulation device 34; the magnetic field generating unit 32, the humidity simulation device 33, and the temperature simulation device 34 are electrically connected to the output end of the control unit 1.

[0054] The temperature simulation device 34 includes a heater 341 and a cooler 342; the heater and the cooler are electrically connected to the output end of the processor 12; the heater 341 and the cooler 342 are staggered and distributed on the side wall of the test box 31, and the processor 12 controls the heater and the cooler to work to adjust the temperature inside the test box.

[0055] The cooler 342 is composed of a semiconductor refrigeration chip, and the heater 341 is composed of a ceramic heating chip. The heater 341 and the cooler 342 can flexibly change the temperature and humidity in the test environment. The working excitation of the ceramic heating chip and the semiconductor refrigeration chip is both excited by direct current, so as to ensure little interference to the internal electromagnetic environment of the test box 31 and is conducive to the integration with the magnetic field generating unit 32.

[0056] The magnetic field generating unit 32 includes an information generator 322, a power amplifier 323, and an electromagnetic coil 321 that are electrically connected in sequence; the information generator 322 is electrically connected to the control unit 1; the power amplifier 323 amplifies the input information generated by the information generator 322 and then inputs it to the electromagnetic coil 321, and a strong magnetic field is generated by the electromagnetic coil 321;

[0057] As Figure 2 and 3As shown, when the amplitude of the energizing current of the electromagnetic coil 321 is larger, the amplitude of its magnetic field strength also increases; the smaller the distance between the measurement point and the center of the energized coil, the larger the amplitude of its magnetic field strength. When the current passing through the electromagnetic coil 321 is too large, the coil will heat up severely, resulting in a change in the coil resistance. By controlling the voltage generated by the signal generator 322 and the power amplifier 323, the current passing through the electromagnetic coil 321 is controlled, ensuring the long-term stable operation of the magnetic field generating unit 32.

[0058] A current-limiting resistor 324 is provided on the circuit connecting the power amplifier 323 and the electromagnetic coil 321; the current-limiting resistor 234 is used to prevent the magnetic field generating unit from generating excessive current, prevent excessive current from being generated due to the low impedance of the electromagnetic coil, and thus prevent the electromagnetic coil from overheating or the power supply unit from being overloaded, ensuring the safe and stable operation of the magnetic field generating unit.

[0059] The magnetic field generating unit 32 is configured with a water cooling device 325; the water cooling device includes a condenser tube, a circulating water pump, and a radiator that are connected in series through pipelines; the condenser tube is arranged around the electromagnetic coil 321, and the circulating water pump drives the coolant to circulate between the condenser tube and the radiator. The water cooling device 325 reduces the temperature of the electromagnetic coil 321 through water circulation, preventing overheating caused by current passing during its long-term operation.

[0060] As Figure 5 shown, the humidity simulation device 33 includes a humidity adjustment tank body 331, a humidifier 334, and a dehumidifier 333; the humidifier 334 is used to humidify the air in the humidity adjustment tank body 331; the dehumidifier 334 is used to dehumidify the air in the humidity adjustment tank body 331; both ends of the humidity adjustment tank body 331 are respectively connected to both ends of the test box body 31 through pipelines; a blower 332 for circulating air is provided in the humidity adjustment tank body 331; the blower, the humidifier, and the dehumidifier are electrically connected to the output end of the processor 12.

[0061] As Figure 7As shown, the input ends of the humidifier 334 and the dehumidifier 333 are connected to the humidity adjustment tank body 334 through pipelines; the output ends of the humidifier 334 and the dehumidifier 333 are connected to the input end of the blower 336 through pipelines; the output end of the blower 336 is connected to the humidity adjustment tank body 331 through a pipeline; solenoid valves 335 are arranged at the input ends of the humidifier 334 and the dehumidifier 333; the solenoid valves 335, the humidifier 334 and the dehumidifier 333 are electrically connected to the control unit 1; the humidity of the air in the humidity adjustment tank body 331 is adjusted by the humidifier 334 and the dehumidifier 333. After the humidity of the air in the humidity adjustment tank body 331 reaches the set value and remains stable, the fan 332 then sends the air in the humidity adjustment tank body 331 into the test box body 31, and the humidity in the test environment can be accurately controlled. In this embodiment, a part of the dehumidifier 333 is arranged in the test box body 31 to directly dehumidify the test box body 31.

[0062] As Figure 6 shown, a displacement adjustment device 6 is arranged in the test box body 31; the displacement adjustment device 6 includes a first longitudinal linear module 61, a second longitudinal linear module 62 and a transverse linear module 63; both ends of the transverse linear module 63 are respectively arranged on the sliding tables of the first longitudinal linear module 61 and the second longitudinal linear module 62, the first longitudinal linear module 61 and the second longitudinal linear module 62 synchronously drive the transverse linear module 63 to move, and a lifting mechanism 64 is arranged on the sliding table of the transverse linear module 63; a rotation adjustment device 7 for fixing the magneto-electric coupling energy harvesting device is arranged on the lifting mechanism 64; the lifting device 64 drives the rotation adjustment device 7 and the magneto-electric coupling energy harvesting device to lift.

[0063] The rotation adjustment device 7 includes an electric turntable 71 capable of rotating in the horizontal direction; the electric turntable 71 is arranged on the lifting mechanism 64, and a support frame 72 is arranged on the electric turntable 71; a mounting plate 73 is installed on the support frame 72 through a rotating shaft, and the magneto-electric coupling energy harvesting device is installed on the mounting plate 73; a rotation adjustment motor drives the rotating shaft to rotate through a worm and worm gear, and the rotating shaft drives the mounting plate to rotate to adjust the pitch angle of the magneto-electric coupling energy harvesting device; the electric turntable rotates in the horizontal direction to adjust the orientation of the magneto-electric coupling energy harvesting device.

[0064] The monitoring unit 4 is electrically connected to a magnetic field sensor 43, a temperature sensor 42, and a humidity sensor 41; the magnetic field sensor 43 detects the magnetic field intensity information inside the test chamber, the temperature sensor 42 detects the actual temperature information of the test chamber 31, and the humidity sensor 41 detects the actual humidity information of the test chamber 31. The magnetic field intensity information, the actual temperature information, and the actual humidity information are sent to the control unit 1 through the monitoring unit 4; the control unit 1 adjusts the output power of the magnetic field generating unit 32 according to the magnetic field intensity information.

[0065] As Figure 4 shown, the control unit 1 simultaneously adjusts the temperature simulation device according to the actual temperature information and the actual humidity information, specifically including:

[0066] The control unit includes a temperature PI controller, a decoupling controller , a coupling controller , and a temperature controller ; the temperature PI controller, the decoupling controller , the coupling controller , and the temperature controller are electrically connected to an arithmetic exchanger; the input end of the arithmetic unit is electrically connected to the monitoring unit, and the output end of the arithmetic unit is electrically connected to the temperature simulation device.

[0067] The control unit 1 subtracts the actual temperature information inside the test chamber from the temperature set information and inputs the result to the temperature PI controller to obtain temperature adjustment information; adds the temperature adjustment information to the compensation information for the influence of humidity change on temperature to obtain temperature correction information, and inputs the temperature correction information to the temperature controller to obtain heating control information; adds the heating control information to the compensation information for the influence of humidity change on temperature to re-obtain the temperature set information and adjusts the temperature simulation device.

[0068] The decoupling controller outputs the compensation information for the influence of humidity change on temperature according to the humidity correction information, and the coupling controller outputs the compensation information for the influence of humidity change on temperature according to the humidity correction information.

[0069] The control unit simultaneously adjusts the humidity simulation device according to the actual temperature information and the actual humidity information, specifically including:

[0070] The control unit 1 includes a humidity PI controller, a decoupling controller , a coupling controller , and a humidity controller ; Humidity PI controller, decoupling controller , coupling controller and humidity controller Electrically connect an operation exchanger; the output end of the operation device is electrically connected to a humidity simulation device;

[0071] The control unit 1 subtracts the actual humidity information and the humidity setting information in the test chamber and inputs the result to the humidity PI controller to obtain humidity adjustment information; adds the humidity adjustment information and the compensation information for the influence of temperature on humidity to obtain humidity correction information, and inputs the humidity correction information to the humidity controller to obtain humidification control information; adds the humidification control information and the compensation information for the influence of temperature change on humidity to re-obtain the humidity setting information and regulates the humidity simulation device;

[0072] Decoupling controller outputs the compensation information for the influence of temperature on humidity according to the temperature correction information, and the coupling controller outputs the compensation information for the influence of the changing temperature on humidity according to the temperature correction information.

[0073] An observation window is provided on the top or side wall of the test chamber, and a sealed glass is provided on the observation window to observe the working state of the magnetoelectric coupling energy harvesting device through the observation window. A feedthrough connector is provided on the side wall of the test chamber, and the temperature sensor and the humidity sensor are electrically connected to the monitoring unit through the feedthrough connector.

[0074] In this embodiment, the test chamber 31 is a modular component, which supports the combination of multiple test chambers 31 in space and function, facilitating the batch testing of the magnetoelectric coupling energy harvesting device and studying its long-term operation reliability. At the same time, each test chamber 31 can operate independently or work in cooperation with other test chambers 31 to meet the different environmental test requirements of users, realizing the scalability and flexibility of the test system.

[0075] Embodiment 2

[0076] As Figure 8 shown, this embodiment discloses a test method for a magnetoelectric coupling energy harvesting device. The test method is applied to the test system described in Embodiment 1, and the test method includes:

[0077] After the magnetoelectric coupling energy harvesting device is placed in the test chamber, adjust the position of the magnetoelectric coupling energy harvesting device through the displacement adjustment device 6, and adjust the orientation and pitch angle of the magnetoelectric coupling energy harvesting device through the rotation adjustment device 7.

[0078] Control the magnetic field generating unit 32 to release a magnetic field towards the test box 31; detect the magnetic field intensity information in the test box 31 through the magnetic field sensor 43, and regulate the output power of the magnetic field generating unit 32 according to the magnetic field intensity information;

[0079] Use the temperature sensor 42 and the humidity sensor 41 to detect the actual temperature information and the actual humidity information of the test box, and send the actual temperature information and the actual humidity information to the control unit through the monitoring unit.

[0080] At the same time, control the temperature simulation device to regulate the temperature of the test box 31 according to the actual temperature information and the actual humidity information, specifically including:

[0081] The control unit includes a temperature PI controller, a decoupling controller , a coupling controller and a temperature controller ; the temperature PI controller, the decoupling controller , the coupling controller and the temperature controller are electrically connected to the arithmetic exchanger; the input end of the arithmetic unit is electrically connected to the monitoring unit, and the output end of the arithmetic unit is electrically connected to the temperature simulation device;

[0082] Subtract the actual temperature information in the test box from the temperature setting information and input it to the temperature PI controller to obtain temperature adjustment information; add the temperature adjustment information to the compensation information of the influence of humidity change on temperature to obtain temperature correction information, and input the temperature correction information to the temperature controller to obtain heating regulation information; add the heating regulation information to the compensation information of the influence of humidity change on temperature to re-obtain the temperature setting information and regulate the temperature simulation device.

[0083] The decoupling controller outputs the compensation information of the influence of humidity change on temperature according to the humidity correction information, and the coupling controller outputs the compensation information of the influence of humidity change on temperature according to the humidity correction information.

[0084] At the same time, control the humidity simulation device to regulate the humidity of the test box according to the actual temperature information and the actual humidity information, specifically including:

[0085] The control unit includes a humidity PI controller, a decoupling controller , a coupling controller and a humidity controller ; the humidity PI controller, the decoupling controller , the coupling controller and humidity controller An electrical connection operation exchanger; the output end of the arithmetic unit is electrically connected to a humidity simulation device;

[0086] The actual humidity information in the test chamber and the humidity setting information are subtracted and then input into the humidity PI controller to obtain humidity adjustment information; the humidity adjustment information is added to the compensation information of the influence of temperature on humidity to obtain humidity correction information, and the humidity correction information is input into the humidity controller to obtain humidification control information; the humidification control information is added to the compensation information of the influence of temperature change on humidity to re-obtain the humidity setting information and to control the humidity simulation device.

[0087] The humidity of the air in the humidity adjustment tank body 331 is adjusted by the humidifier 334 and the dehumidifier 333 according to the humidity setting information When the humidity of the air in the humidity adjustment tank body 331 reaches the set value and remains stable, the fan 332 then sends the air in the humidity adjustment tank body 331 into the test chamber 31, and the humidity in the test environment can be accurately controlled.

[0088] Decoupling controller Outputs the compensation information of the influence of the temperature on the humidity according to the temperature correction information, and the coupling controller Outputs the compensation information of the influence of the changing temperature on the humidity according to the temperature correction information.

[0089] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0090] The present application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate for realizing in the process Figure 1 one process or multiple processes and / or blocksFigure 1 means for the functions specified in one or more boxes.

[0091] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce a manufacture including an instruction means that implements the functions specified in one Figure 1 flow or more flows and / or boxes Figure 1 or more boxes.

[0092] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus, such that a series of operational steps are performed on the computer or other programmable apparatus to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one Figure 1 flow or more flows and / or boxes Figure 1 or more boxes.

[0093] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A test system for a magneto-electromechanical coupling energy harvesting device, characterized in that It includes a test platform, a monitoring unit and a control unit; the monitoring unit is electrically connected to the input end of the control unit; A test box body and a magnetic field generating unit are arranged on the test platform; the magnetic field generating unit releases a magnetic field towards the test box body; the test box body is externally connected to a humidity simulation device for adjusting humidity through a pipeline; a temperature simulation device for adjusting temperature is arranged in the test box body; the magnetic field generating unit, the humidity simulation device and the temperature simulation device are electrically connected to the output end of the control unit; The monitoring unit is electrically connected with a magnetic field sensor, a temperature sensor and a humidity sensor; the magnetic field sensor detects the magnetic field intensity information in the test box body; the temperature sensor detects the actual temperature information in the test box body, and the humidity sensor detects the actual humidity information in the test box body. The monitoring unit sends the magnetic field intensity information, the actual temperature information and the actual humidity information to the control unit; the control unit adjusts the output power of the magnetic field generating unit according to the magnetic field intensity information, and at the same time adjusts the temperature simulation device according to the actual temperature information and the actual humidity information, and at the same time adjusts the humidity simulation device according to the actual temperature information and the actual humidity information.

2. The test system according to claim 1, wherein The magnetic field generating unit includes an information generator, a power amplifier and an electromagnetic coil that are electrically connected in sequence; the information generator is electrically connected to the control unit; the power amplifier amplifies the input information generated by the information generator and then inputs it to the electromagnetic coil, and a strong magnetic field is generated by the electromagnetic coil; a current-limiting resistor is arranged on the circuit connecting the power amplifier and the electromagnetic coil.

3. The test system according to claim 2, characterized in that, The magnetic field generating unit is configured with a water cooling device; the water cooling device includes a condensing pipe, a circulating water pump and a radiator that are connected in sequence through pipelines; the condensing pipe is arranged around the electromagnetic coil, and the circulating water pump drives the coolant to circulate between the condensing pipe and the radiator.

4. The test system according to claim 1, characterized in that The humidity simulation device includes a humidity adjustment tank body, a humidifier and a dehumidifier; the humidifier is used for humidifying the air in the humidity adjustment tank body; the dehumidifier is used for dehumidifying the air in the humidity adjustment tank body; both ends of the humidity adjustment tank body are respectively communicated with both ends of the test box body through pipelines; a blower for circulating air is arranged in the humidity adjustment tank body; the blower, the humidifier and the dehumidifier are electrically connected to the output end of the control unit.

5. The test system according to claim 4, characterized in that, The input ends of the humidifier and the dehumidifier are communicated with the humidity adjustment tank body through pipelines; the output ends of the humidifier and the dehumidifier are connected to the input end of a blower through pipelines; the output end of the blower is communicated with the humidity adjustment tank body through a pipeline; electromagnetic valves are arranged at the input ends of the humidifier and the dehumidifier; the electromagnetic valves, the humidifier and the dehumidifier are electrically connected to the control unit.

6. The test system according to claim 1, wherein The temperature simulation device includes a heater and a cooler; the heater and the cooler are electrically connected to the output end of the control unit, the heater and the cooler are alternately distributed on the side wall of the test box body, and the control unit controls the heater and the cooler to work to adjust the temperature in the test box body.

7. The test system according to claim 1, characterized in that, A displacement adjustment device is provided inside the test chamber. The displacement adjustment device includes a first longitudinal linear module, a second longitudinal linear module, and a transverse linear module. The two ends of the transverse linear module are respectively arranged on the sliders of the first longitudinal linear module and the second longitudinal linear module. The first longitudinal linear module and the second longitudinal linear module synchronously drive the transverse linear module to move. An elevating mechanism is provided on the transverse linear module. A rotation adjustment device for fixing the magneto-electric coupling energy harvesting device is provided on the elevating mechanism. The elevating device drives the rotation adjustment device and the magneto-electric coupling energy harvesting device to move up and down.

8. The test system according to claim 1, wherein The rotation adjustment device includes an electric turntable for horizontal rotation. The electric turntable is arranged on the elevating mechanism. A support frame is arranged on the electric turntable. Rotating shafts are provided on both sides of the mounting plate. The rotating shafts are rotatably connected to the support frame. The magneto-electric coupling energy harvesting device is mounted on the mounting plate. A rotation adjustment motor drives the rotating shafts to rotate through a worm and worm gear. The rotating shafts drive the mounting plate to rotate to adjust the pitch angle of the magneto-electric coupling energy harvesting device. The electric turntable rotates horizontally to adjust the orientation of the magneto-electric coupling energy harvesting device.

9. The test system according to claim 1, wherein The control unit simultaneously regulates the temperature simulation device according to the actual temperature information and the actual humidity information, specifically including: The control unit includes a temperature PI controller and a decoupling controller , a coupling controller and a temperature controller ; the temperature PI controller, the decoupling controller , the coupling controller and the temperature controller are electrically connected to an arithmetic exchanger; the input end of the arithmetic unit is electrically connected to a monitoring unit, and the output end of the arithmetic unit is electrically connected to a temperature simulation device; The operation exchanger subtracts the actual temperature information in the test chamber from the temperature setting information and inputs the result to the temperature PI controller to obtain temperature adjustment information; adds the temperature adjustment information to the compensation information of the humidity change on the temperature to obtain temperature correction information, and inputs the temperature correction information to the temperature controller. Obtain heating control information; add the heating control information to the compensation information of the humidity change on the temperature to re-obtain the temperature setting information and control the temperature simulation device. Decoupling controller Output the compensation information of the influence of the humidity change on the temperature according to the humidity correction information, coupling controller Output the compensation information of the influence of the humidity change on the temperature according to the humidity correction information.

10. The test system according to claim 9, characterized in that, The control unit simultaneously regulates the humidity simulation device according to the actual temperature information and the actual humidity information, specifically including: The control unit includes a humidity PI controller, a decoupling controller , a coupling controller and a humidity controller ; the humidity PI controller, the decoupling controller , the coupling controller and the humidity controller are electrically connected to an arithmetic exchanger; the output end of the arithmetic unit is electrically connected to a humidity simulation device; The operation exchanger subtracts the actual humidity information in the test chamber from the set humidity information and inputs the result to the humidity PI controller to obtain humidity adjustment information; adds the humidity adjustment information to the compensation information for the influence of temperature on humidity to obtain humidity correction information, and inputs the humidity correction information to the humidity controller. Obtain humidification control information; add the humidification control information to the compensation information for the influence of temperature change on humidity to re-obtain the set humidity information and control the humidity simulation device. Decoupling controller Output the compensation information of the influence of the temperature on the humidity according to the temperature correction information, coupling controller Output the compensation information of the influence of the changing temperature on the humidity according to the temperature correction information.

11. The control method of the test system according to any one of claims 1 to 10, characterized in that, Including: After the magneto-electric coupling energy harvesting device is placed in the test chamber, control the magnetic field generating unit to release a magnetic field towards the test chamber. Detect the magnetic field intensity information inside the test chamber through a magnetic field sensor, and regulate the output power of the magnetic field generating unit according to the magnetic field intensity information. Use a temperature sensor and a humidity sensor to detect the actual temperature information and the actual humidity information of the test chamber, and send the actual temperature information and the actual humidity information to the control unit through a monitoring unit. Simultaneously control the temperature simulation device to regulate the temperature of the test chamber according to the actual temperature information and the actual humidity information, and simultaneously control the humidity simulation device to regulate the humidity of the test chamber according to the actual temperature information and the actual humidity information.

12. The test method according to claim 11, characterized in that Simultaneously control the temperature simulation device to regulate the temperature of the test chamber according to the actual temperature information and the actual humidity information, specifically including: The control unit includes a temperature PI controller and a decoupling controller , a coupling controller and a temperature controller ; the temperature PI controller, the decoupling controller , the coupling controller and the temperature controller are electrically connected to the operation exchanger; the input end of the arithmetic unit is electrically connected to the monitoring unit, and the output end of the arithmetic unit is electrically connected to the temperature simulation device; Subtract the actual temperature information in the test chamber from the temperature setting information and input the result into the temperature PI controller to obtain temperature adjustment information; add the temperature adjustment information to the compensation information for the influence of humidity change on temperature to obtain temperature correction information, and input the temperature correction information into the temperature controller Obtain heating control information; add the heating control information to the compensation information for the influence of humidity change on temperature to re-obtain the temperature setting information and control the temperature simulation device; Decoupling controller Output the compensation information of the influence of the humidity change on the temperature according to the humidity correction information, coupling controller Output the compensation information of the influence of the humidity change on the temperature according to the humidity correction information.

13. The test method according to claim 12, wherein Simultaneously control the humidity simulation device to regulate the humidity of the test chamber according to the actual temperature information and the actual humidity information, specifically including: The control unit includes a humidity PI controller, a decoupling controller , a coupling controller and a humidity controller ; the humidity PI controller, the decoupling controller , the coupling controller and the humidity controller are electrically connected to the operation exchanger; the output end of the arithmetic unit is electrically connected to the humidity simulation device; Subtract the actual humidity information in the test chamber from the set humidity information and input the result into the humidity PI controller to obtain humidity adjustment information; add the humidity adjustment information to the compensation information for the influence of temperature on humidity to obtain humidity correction information, and input the humidity correction information into the humidity controller Obtain humidification control information; add the humidification control information to the compensation information for the influence of temperature change on humidity to re-obtain the set humidity information and control the humidity simulation device; Decoupling controller Output the compensation information of the influence of the temperature on the humidity according to the temperature correction information, coupling controller Output the compensation information of the influence of the varying temperature on the humidity according to the temperature correction information.

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