Performance test system for vibration energy collector

Abstract

The invention discloses a vibration energy collector performance test system, which comprises a vibration generation device, an electromagnetic field generator and an environment monitoring device which are arranged in a surrounding area of a vibration energy collector, and a signal acquisition and transmission module and a controller, the vibration generating device is used for generating a vibration signal; the electromagnetic field generator is used for generating an electric field and / or a magnetic field in response to the first regulation signal; the environment monitoring device is used for monitoring an electric field and / or a magnetic field of an environment where the vibration energy collector is located and generating an electromagnetic field signal; the signal acquisition and transmission module is respectively connected with the environment monitoring device and the controller and is used for transmitting the acquired electromagnetic field signal to the controller; and the controller is connected with the electromagnetic field generator and is used for generating a first regulation and control signal according to the electromagnetic field signal and feeding back the first regulation and control signal to the electromagnetic field generator. According to the invention, negative feedback adjustment of the electric field and / or the magnetic field in the test environment of the vibration energy collector is realized, so that the safety of environmental conditions in the test process is ensured.

Description

Technical Field

[0001] The invention relates to the field of vibration energy harvester performance testing, and in particular to a vibration energy harvester performance testing system. Background Art

[0002] A vibration energy harvester is an energy-collecting device that collects, converts and utilizes the widely distributed vibration mechanical energy in the environment. It converts external vibration mechanical energy into electrical energy, and after rectification and modulation, it can provide uninterrupted energy for the subsequent load. However, during the actual installation and operation process, the temperature and humidity in the natural environment will affect the materials of the cantilever beam, vibration pickup spring and other components in the harvester, and the complex factors such as the electric field and magnetic field in the power industry environment will interfere with the magnetic field distribution inside the device. These coupling factors cause the resonant frequency of the device to shift and deteriorate the output performance. In severe cases, the transduction mechanism of the device is destroyed, resulting in failure of the work. Therefore, in the design and manufacturing process of the harvester, it is of great significance to study the action mechanism of various environmental parameters, avoid material failure factors in a targeted manner, improve the scientific nature of the structural design, and increase the shielding and compensation structure, which is of great significance to the design, preparation and application of vibration energy harvesters.

[0003] Existing vibration energy harvester test systems or devices are all aimed at testing equipment to carry out test experiments under simple environmental variables, such as vibration, stress, temperature, etc., but do not mention miniaturized devices that integrate multiple environmental variables. In addition, current test devices are easily affected by the external environment, have low accuracy and limited safety. Summary of the invention

[0004] An embodiment of the present invention provides a vibration energy harvester performance testing system, which realizes rapid negative feedback regulation of the electric field and / or magnetic field in the vibration energy harvester testing environment to ensure the safety of environmental conditions during the test and improve the comprehensiveness, safety and stability of the test.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a vibration energy harvester performance test system, comprising: a vibration generating device, an electromagnetic field generator and an environmental monitoring device arranged in the surrounding area of ​​the vibration energy harvester, as well as a signal acquisition and transmission module and a controller;

[0006] Wherein, the vibration generating device is used to generate vibration signals of multiple vibration parameters;

[0007] The electromagnetic field generator is used to generate a corresponding electric field and / or magnetic field in response to a first control signal from a user terminal or the controller;

[0008] The environment monitoring device is used to monitor the electric field and / or magnetic field of the environment in which the vibration energy harvester is located, and generate corresponding electromagnetic field signals;

[0009] a signal acquisition and transmission module, connected to the environment monitoring device and the controller respectively, for acquiring the electromagnetic field signal output by the environment monitoring device and transmitting the electromagnetic field signal to the controller;

[0010] The controller is connected to the electromagnetic field generator, and is used to generate the first control signal according to the electromagnetic field signal transmitted by the signal acquisition and transmission module, and feed the first control signal back to the electromagnetic field generator.

[0011] In the implementation of the embodiment of the present invention, an electromagnetic field generator is arranged in the surrounding area of ​​the vibration energy harvester to respond in real time to the first control signal from the user end or the controller, and generate a corresponding electric field and / or magnetic field, so that the vibration energy harvester is in different electric field and / or magnetic field environments that meet the real-time control requirements, thereby facilitating the study of the characteristic change law of the vibration energy harvester under the conditions of a single electric field, a single magnetic field or a composite electromagnetic field, and improving the flexibility and adaptability of the vibration energy harvester test. Furthermore, an environmental monitoring device is arranged in the surrounding area of ​​the vibration energy harvester to monitor the electric field and / or magnetic field of the environment in which the vibration energy harvester is located, and generate a corresponding electromagnetic field signal, and then the electromagnetic field signal output by the environmental monitoring device is collected through a signal acquisition and transmission module connected to the environmental monitoring device, and the electromagnetic field signal is transmitted to the controller connected to the environmental monitoring device, so that the controller generates a first control signal according to the electromagnetic field signal, and feeds back the first control signal to the electromagnetic field generator connected to the controller, so as to realize the rapid negative feedback regulation of the electric field and / or magnetic field, which can ensure the safety of the environmental conditions during the test, avoid excessive electromagnetic field strength from causing damage to equipment or personnel, and thus improve the comprehensiveness and safety and stability of the vibration energy harvester test. In addition, by setting up a vibration generating device in the surrounding area of ​​the vibration energy harvester, vibration signals with multiple vibration parameters are generated, so that the vibration energy harvester is placed in various types of external vibration environments, thereby facilitating testing the performance of the vibration energy harvester in different external vibration environments.

[0012] As a preferred solution, the vibration energy harvester performance testing system further includes: a temperature and humidity generator arranged in the surrounding area of ​​the vibration energy harvester;

[0013] The temperature and humidity generator is used to control and adjust the temperature and humidity of the environment where the vibration energy harvester is located in response to the second control signal from the user end or the controller;

[0014] The environmental monitoring device further includes a temperature and humidity sensor for monitoring the temperature and humidity of the environment in which the vibration energy harvester is located, and generating corresponding temperature and humidity signals;

[0015] The signal acquisition and transmission module is used to acquire the temperature and humidity signals output by the environment monitoring device and transmit the temperature and humidity signals to the controller;

[0016] The controller is also connected to the temperature and humidity generator, and is used to generate the second control signal according to the temperature and humidity signal transmitted by the signal acquisition and transmission module, and feed the second control signal back to the temperature and humidity generator.

[0017] The preferred solution of the embodiment of the present invention is implemented by a temperature and humidity generator arranged in the surrounding area of ​​the vibration energy harvester, responding in real time to the second control signal from the user end or the controller, controlling and adjusting the temperature and humidity of the environment in which the vibration energy harvester is located, so that the vibration energy harvester is in different temperature and humidity environmental conditions that meet the real-time control requirements, and using a temperature and humidity sensor arranged in the surrounding area of ​​the vibration energy harvester to monitor the temperature and humidity of the environment in which the vibration energy harvester is located, and generating a corresponding temperature and humidity signal, and then connecting a signal acquisition and transmission module with an environmental monitoring device including a temperature and humidity sensor, collecting the temperature and humidity signal output by the environmental monitoring device, and transmitting the temperature and humidity signal to the controller, so that the controller generates a second control signal according to the temperature and humidity signal, and then feeding back the second control signal to the temperature and humidity generator connected to the controller, so as to integrate temperature and humidity closed-loop control in the system, real-time tracking and precise control of the temperature and humidity in the environmental cavity, thereby testing the long-term reliability and stability of the vibration energy harvester in different natural environments. Further, through the temperature and humidity generator, extreme environmental conditions (such as high temperature and humidity, low temperature and drying, etc.) can be simulated to evaluate the stability and durability of the vibration energy harvester in harsh environments.

[0018] As a preferred solution, the temperature and humidity generator includes a ceramic heating plate, an atomizing plate, a heat exchange device, a water pump, a refrigeration semiconductor and a fan.

[0019] The preferred solution of the embodiment of the present invention is to use a ceramic heating plate and a refrigeration semiconductor to stably control the temperature change of the environment in which the vibration energy harvester is located, and in combination with a cold and heat exchange device and a fan, the temperature can be quickly and evenly adjusted. The atomization plate and a water pump can atomize water molecules and accurately adjust the humidity of the environment in which the vibration energy harvester is located, thereby stably controlling the humidity change of the environment in which the vibration energy harvester is located. In addition, the refrigeration semiconductor and the ceramic heating plate have a high energy conversion efficiency, and the use of the refrigeration semiconductor and the ceramic heating plate to achieve temperature control can reduce energy consumption.

[0020] As a preferred solution, the temperature and humidity generator and the environment monitoring device are arranged inside the environment cavity; and the vibration energy harvester is arranged in the central area inside the environment cavity.

[0021] According to the preferred scheme of the embodiment of the present invention, the vibration energy harvester to be tested is arranged in the central area inside the environmental cavity, and the temperature and humidity generator and the environmental monitoring device are arranged inside the environmental cavity. This can reduce the influence of the external environmental temperature and humidity on the environmental temperature and humidity of the vibration energy harvester, so that the vibration energy harvester in the central area inside the environmental cavity is maintained under specific temperature and humidity conditions for a long time, thereby achieving uniform distribution and precise control of environmental parameters and improving the accuracy and reliability of the test.

[0022] As a preferred solution, the electromagnetic field generator comprises: a magnetic field generator;

[0023] Wherein, the magnetic field generator includes a Helmholtz coil group, and the two coils contained in the Helmholtz coil group are respectively arranged on both sides of the environmental cavity, for generating a magnetic field in the central area inside the environmental cavity.

[0024] In a preferred embodiment of the present invention, the magnetic field generator is composed of a Helmholtz coil group, and the Helmholtz coil group is composed of two circular coils of the same size arranged along their common axis and separated by a certain distance, and the two coils contained in the Helmholtz coil group are respectively arranged on both sides of the environmental cavity. This arrangement can generate a relatively uniform magnetic field area in the environmental cavity, and the vibration energy harvester to be tested is arranged in the central area inside the environmental cavity, which can ensure that the vibration energy harvester is affected by the magnetic field during the test, thereby improving the accuracy of the test results. In addition, the environmental cavity can play a certain degree of electromagnetic shielding role, reduce the interference of the external electromagnetic field on the test, and also prevent the magnetic field generated by the test from affecting the external environment.

[0025] As a preferred solution, the electromagnetic field generator further comprises: an electric field generator;

[0026] Wherein, the electric field generator includes two capacitor plates connected to AC voltage or DC voltage, and the two capacitor plates are respectively arranged above and below the environmental cavity, and are used to generate AC electric field or DC electric field in the central area inside the environmental cavity.

[0027] Implementing the preferred solution of the embodiment of the present invention, the electric field generator includes two capacitor plates connected to an alternating voltage or a direct current voltage. Two parallel capacitor plates can generate a relatively uniform electric field in the middle region. By precisely controlling the voltages of the two capacitor plates, a uniform alternating electric field or direct current electric field can be generated in the central region inside the environmental cavity. If the vibration energy harvester to be tested is arranged in the central region inside the environmental cavity, it can ensure that the electric field influence on the vibration energy harvester during the test is consistent, improving the accuracy of the test results. In addition, the environmental cavity can play a certain degree of electromagnetic shielding role, reducing the interference of the external electric field on the test, and at the same time preventing the electric field generated by the test from affecting the external environment.

[0028] As a preferred solution, an array module is arranged inside the environmental cavity; wherein, the array module is used to install one or more vibration energy harvesters.

[0029] Implementing the preferred solution of the embodiment of the present invention, by arranging an array module inside the environmental cavity and using the array module, multiple vibration energy harvesters can be installed simultaneously, thereby realizing batch testing and reliability detection of the vibration energy harvesters, greatly saving labor and material costs.

[0030] As a preferred solution, the environmental monitoring device includes: an electric field sensor and a magnetic field sensor;

[0031] Wherein, the electric field sensor is arranged inside the environmental cavity and is used to detect the electric field direction and electric field intensity of the environment where the vibration energy harvester is located;

[0032] The magnetic field sensor is arranged inside the environmental cavity and is used to detect the magnetic field direction and magnetic field intensity of the environment where the vibration energy harvester is located.

[0033] Implementing the preferred solution of the embodiment of the present invention, using the electric field sensor and the magnetic field sensor as the environmental monitoring device and arranging them inside the environmental cavity, and arranging the vibration energy harvester to be tested in the central region inside the environmental cavity, the electromagnetic distribution of the environment where the vibration energy harvester is located can be monitored in real time and for a long time. Combining with other structures of the system, the performance of the energy harvester in different levels of stable electromagnetic environments can be evaluated to ensure its long-term reliability.

[0034] As a preferred solution, the vibration energy harvester performance test system further includes:

[0035] The vibration generating device is connected to the controller and is used to generate vibration signals with various vibration parameters in response to the third control signal from the user terminal or the controller; wherein, the vibration parameters include vibration frequency and vibration acceleration;

[0036] The signal acquisition and transmission module is also connected to the vibration energy collector, and is used to acquire a first electric energy signal output by the vibration energy collector, and transmit the first electric energy signal to the controller;

[0037] The controller is further configured to generate the third control signal according to the first electric energy signal transmitted by the signal acquisition and transmission module, and feed the third control signal back to the vibration generating device.

[0038] A preferred solution for implementing the embodiment of the present invention is to collect the first electric energy signal output by the vibration energy harvester in real time through the signal acquisition and transmission module, and transmit the first electric energy signal to the controller, then the controller generates a third control signal according to the first electric energy signal, and feeds the third control signal back to the vibration generating device, dynamically adjusts vibration parameters such as vibration frequency and vibration acceleration, so as to simulate various vibration environments that the vibration energy harvester may encounter in actual applications, thereby supporting the performance testing of the vibration energy harvester under different vibration conditions and improving the practicality and reference value of the test results.

[0039] As a preferred solution, the vibration generating device comprises: a power amplifier and an excitation platform connected to each other;

[0040] The power amplifier is connected to the power supply, and is used to respond to the third control signal from the user end or the controller, to amplify the second power signal output by the power supply, and to obtain and output the corresponding third power signal;

[0041] The vibration platform is used to convert the third electric energy signal output by the power amplifier into mechanical vibration to generate a corresponding vibration signal.

[0042] According to a preferred solution for implementing the embodiment of the present invention, in a vibration generating device, a power amplifier is used to amplify the second electric energy signal output by a power supply, thereby providing a sufficiently large output power to drive the vibration table to generate a vibration signal with a strong vibration force, and the vibration table converts the third electric energy signal after power amplification into mechanical vibration, which can generate a high-frequency and high-acceleration vibration signal, thereby meeting the performance test requirements of the vibration energy harvester at high vibration energy levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 : A structural schematic diagram of a vibration energy harvester performance testing system provided in Example 1 of the present invention;

[0044] Figure 2 : A schematic diagram of the relative positions of an electric field generator, a magnetic field generator, an excitation table, a signal acquisition and transmission module, and a temperature and humidity generator of a vibration energy harvester performance test system provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Embodiment one:

[0047] Please refer to Figure 1 , a vibration energy harvester performance test system provided by an embodiment of the present invention, the system includes the following structures: a vibration generating device, an electromagnetic field generator and an environmental monitoring device arranged in the surrounding area of ​​the vibration energy harvester, as well as a signal acquisition and transmission module 14 and a controller 10. Among them, each structure is specifically as follows:

[0048] The vibration generating device is used to generate vibration signals with multiple vibration parameters to simulate the external vibration environment.

[0049] As a preferred solution, the vibration generating device includes: a power amplifier 11 and an excitation platform 12 which are connected to each other.

[0050] The power amplifier 11 is connected to the power supply 9 and is used to respond to a third control signal from the user end or the controller 10, amplify the power of the second power signal output by the power supply 9, and obtain and output a corresponding third power signal.

[0051] The vibration table 12 is used to convert the third electric energy signal output by the power amplifier 11 into mechanical vibration to generate a corresponding vibration signal.

[0052] The electromagnetic field generator is used to generate a corresponding electric field and / or magnetic field in response to a first control signal from the user end or the controller 10.

[0053] As a preferred solution, the electromagnetic field generator includes: a magnetic field generator 13.

[0054] Please refer to Figure 2 The magnetic field generator 13 includes a Helmholtz coil group, and the two coils contained in the Helmholtz coil group are respectively arranged on both sides of the environmental cavity 19, that is, the magnetic field generator 13 is arranged on the periphery of the entire environmental cavity 19, and is used to generate a magnetic field in the central area inside the environmental cavity 19.

[0055] In this embodiment, different levels of magnetic field strength are applied to the environment of the vibration energy harvester to be tested by the magnetic field generator 13, which can simulate the complex strong magnetic field distribution in the actual environment, so as to study the change law of the output characteristics and other performance of the vibration energy harvester under a single magnetic field condition. The magnetic field size is regulated by changing the size of the current flowing through the coil.

[0056] As a preferred solution, the electromagnetic field generator further includes: an electric field generator 1.

[0057] Please refer to Figure 2 The electric field generator 1 includes two capacitor plates connected to an AC voltage or a DC voltage, and the two capacitor plates are respectively arranged above and below the environmental cavity 19, that is, the electric field generator 1 is arranged on the periphery of the entire environmental cavity 19, and is used to generate an AC electric field or a DC electric field in the central area inside the environmental cavity 19.

[0058] In this embodiment, an electric field generator 1 is further provided on the basis of the magnetic field generator 13, and the simulation of the AC and DC electric fields is realized by connecting the AC and DC voltages to a pair of capacitor plates. The electric field in the system is changed by adjusting the voltage applied to the plates, so that different levels of electric field strength can be applied to the environment where the vibration energy harvester to be tested is located, so as to study the change law of the output characteristics and other performance of the vibration energy harvester under the composite electromagnetic field condition.

[0059] The environmental monitoring device is used to monitor the electric field and / or magnetic field of the environment in which the vibration energy harvester is located and generate corresponding electromagnetic field signals.

[0060] As a preferred solution, the environment monitoring device includes: an electric field sensor 17 and a magnetic field sensor 18 .

[0061] Please refer to Figure 2 The electric field sensor 17 is arranged inside the environmental cavity 19 and is used to detect the electric field direction and electric field strength of the environment in which the vibration energy harvester is located.

[0062] Please refer to Figure 2 The magnetic field sensor 18 is arranged inside the environmental cavity 19 and is used to detect the magnetic field direction and magnetic field strength of the environment in which the vibration energy harvester is located.

[0063] The signal acquisition and transmission module 14 is connected to the environment monitoring device and the controller 10 respectively, and is used for acquiring the electromagnetic field signal output by the environment monitoring device and transmitting the electromagnetic field signal to the controller 10 .

[0064] In this embodiment, the signal acquisition and transmission module 14 can be used to transmit various monitoring signals output by the environmental monitoring device to the controller 10 and the computer 8 to monitor and control various monitoring signals. The signal transmission, storage, calculation and display are realized through the interaction between the signal acquisition and transmission module 14 and the controller 10 and the computer 8.

[0065] The controller 10 is connected to the electromagnetic field generator, and is used to generate a first control signal according to the electromagnetic field signal transmitted by the signal acquisition and transmission module 14 and feed the first control signal back to the electromagnetic field generator.

[0066] In this embodiment, the controller 10 realizes the coordination among the subsystems such as the electromagnetic field generator, the vibration generating device, and the environmental monitoring device through the bottom layer control, and communicates with the computer 8 to realize the control of the upper computer.

[0067] As a preferred solution, a vibration energy harvester performance testing system provided in an embodiment of the present invention further includes: a temperature and humidity generator arranged in the surrounding area of ​​the vibration energy harvester.

[0068] The temperature and humidity generator is used to respond to the second control signal from the user end or the controller 10 to control and adjust the temperature and humidity of the environment in which the vibration energy harvester is located, so as to study the change law of the output characteristics and other performance of the vibration energy harvester under temperature and humidity environment conditions.

[0069] In this embodiment, the temperature and humidity of the environment in which the vibration energy harvester is located are controlled and adjusted in real time in response to the second control signal from the user end or the controller 10 .

[0070] The environment monitoring device also includes a temperature and humidity sensor 15 for monitoring the temperature and humidity of the environment in which the vibration energy harvester is located, and generating corresponding temperature and humidity signals.

[0071] The signal acquisition and transmission module 14 is used to acquire the temperature and humidity signals output by the environment monitoring device and transmit the temperature and humidity signals to the controller 10 .

[0072] The controller 10 is also connected to the temperature and humidity generator, and is used to generate a second control signal according to the temperature and humidity signal transmitted by the signal acquisition and transmission module 14 and feed the second control signal back to the temperature and humidity generator.

[0073] As a preferred solution, the temperature and humidity generator includes a ceramic heating plate 2, an atomizing plate 3, a heat exchange device 4, a water pump 5, a refrigeration semiconductor 6 and a fan 7.

[0074] In this embodiment, the temperature and humidity generator is used to simulate the temperature and humidity changes in the environment. Among them, the ceramic heating plate 2 and the cooling semiconductor 6 are used to control the temperature changes, the atomizing plate 3 and the water pump 5 control the humidity changes, and the heat exchange device 4 and the fan 7 realize the rapid and uniform temperature adjustment. At the same time, combined with the temperature and humidity sensor 15, the rapid negative feedback adjustment of temperature and humidity is realized.

[0075] As a preferred option, please refer to Figure 2 A temperature and humidity generator including a ceramic heating plate 2, an atomizing plate 3, a heat exchange device 4, a water pump 5, a refrigeration semiconductor 6 and a fan 7 is arranged inside the environmental cavity 19; an environmental monitoring device is arranged inside the environmental cavity 19; and a vibration energy harvester is arranged in the central area inside the environmental cavity 19.

[0076] In this embodiment, the vibration energy harvester is arranged at the center of the cavity to simulate the output characteristics of the vibration energy harvester under the action of an external electromagnetic field and optimize the structural design of the energy harvester and the magnetic shielding packaging method.

[0077] As a preferred solution, an array module is disposed inside the environmental cavity 19; wherein the array module is used to install one or more vibration energy harvesters.

[0078] As a preferred solution, a vibration energy harvester performance testing system provided in an embodiment of the present invention further includes:

[0079] The vibration generating device is connected to the controller 10 and is used to generate vibration signals of multiple vibration parameters in response to a third control signal from the user end or the controller 10. The vibration parameters include vibration frequency and vibration acceleration.

[0080] In this embodiment, the vibration generating device can generate vibration signals of different frequencies and accelerations to simulate the external vibration environment so as to test the output performance and reliability of the energy harvester under different vibration environments. The rest of the system is integrated with the vibration table 12 in the vibration generating device to ensure physical and electrical connections through reliable fixation.

[0081] The signal acquisition and transmission module 14 is also connected to the vibration energy harvester, and is used to acquire the first electric energy signal output by the vibration energy harvester, and transmit the first electric energy signal to the controller 10 .

[0082] The controller 10 is further configured to generate a third control signal according to the first electric energy signal transmitted by the signal acquisition and transmission module 14 and feed the third control signal back to the vibration generating device.

[0083] As a preferred solution, the vibration generating device includes: a power amplifier 11 and an excitation platform 12 which are connected to each other.

[0084] The power amplifier 11 is connected to the power supply 9 and is used to respond to a third control signal from the user end or the controller 10, amplify the power of the second power signal output by the power supply 9, and obtain and output a corresponding third power signal.

[0085] The vibration table 12 is used to convert the third electric energy signal output by the power amplifier 11 into mechanical vibration to generate a corresponding vibration signal.

[0086] In this embodiment, the vibration table 12 is used to simulate vibration sources of various frequencies and accelerations widely distributed in the environment.

[0087] It should be noted that the vibration energy harvester performance test system provided by the embodiment of the present invention can also be used to test the performance of other devices. As an example, replacing the vibration energy harvester with a micromirror or other MEMS device can achieve performance testing of the vibration energy harvester replaced with a micromirror or other MEMS device.

[0088] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0089] The present invention provides a vibration energy harvester performance test system. An electromagnetic field generator is arranged in the surrounding area of ​​the vibration energy harvester to respond to a first control signal from a user end or a controller in real time and generate a corresponding electric field and / or magnetic field, so that the vibration energy harvester is in different electric field and / or magnetic field environments that meet the real-time control requirements, thereby facilitating the study of the characteristic change law of the vibration energy harvester under the conditions of a single electric field, a single magnetic field or a composite electromagnetic field, and improving the flexibility and adaptability of the vibration energy harvester test. Furthermore, an environmental monitoring device is arranged in the surrounding area of ​​the vibration energy harvester to monitor the electric field and / or magnetic field of the environment in which the vibration energy harvester is located, and generate a corresponding electromagnetic field signal. Then, the electromagnetic field signal output by the environmental monitoring device is collected through a signal acquisition and transmission module connected to the environmental monitoring device, and the electromagnetic field signal is transmitted to a controller connected to the environmental monitoring device, so that the controller generates a first control signal according to the electromagnetic field signal, and feeds back the first control signal to the electromagnetic field generator connected to the controller, so as to realize the rapid negative feedback regulation of the electric field and / or magnetic field, and ensure the safety of the environmental conditions during the test, avoid excessive electromagnetic field strength from causing damage to equipment or personnel, and thus improve the comprehensiveness and safety and stability of the vibration energy harvester test. In addition, by setting up a vibration generating device in the surrounding area of ​​the vibration energy harvester, vibration signals with multiple vibration parameters are generated, so that the vibration energy harvester is placed in various types of external vibration environments, thereby facilitating testing the performance of the vibration energy harvester in different external vibration environments.

[0090] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vibration energy harvester performance testing system, characterized in that: include: A vibration generating device, an electromagnetic field generator and an environmental monitoring device, as well as a signal acquisition and transmission module and a controller are arranged in the surrounding area of ​​the vibration energy harvester; Wherein, the vibration generating device is used to generate vibration signals of multiple vibration parameters; The electromagnetic field generator is used to generate a corresponding electric field and / or magnetic field in response to a first control signal from a user terminal or the controller; The environment monitoring device is used to monitor the electric field and / or magnetic field of the environment in which the vibration energy harvester is located, and generate corresponding electromagnetic field signals; a signal acquisition and transmission module, connected to the environment monitoring device and the controller respectively, for acquiring the electromagnetic field signal output by the environment monitoring device and transmitting the electromagnetic field signal to the controller; The controller is connected to the electromagnetic field generator, and is used to generate the first control signal according to the electromagnetic field signal transmitted by the signal acquisition and transmission module, and feed the first control signal back to the electromagnetic field generator.

2. A vibration energy harvester performance testing system as claimed in claim 1, characterized in that: Also includes: A temperature and humidity generator disposed in the surrounding area of ​​the vibration energy harvester; The temperature and humidity generator is used to control and adjust the temperature and humidity of the environment where the vibration energy harvester is located in response to the second control signal from the user end or the controller; The environmental monitoring device further includes a temperature and humidity sensor for monitoring the temperature and humidity of the environment in which the vibration energy harvester is located, and generating corresponding temperature and humidity signals; The signal acquisition and transmission module is used to acquire the temperature and humidity signals output by the environment monitoring device and transmit the temperature and humidity signals to the controller; The controller is also connected to the temperature and humidity generator, and is used to generate the second control signal according to the temperature and humidity signal transmitted by the signal acquisition and transmission module, and feed the second control signal back to the temperature and humidity generator.

3. A vibration energy harvester performance testing system as claimed in claim 2, characterized in that: The temperature and humidity generator comprises a ceramic heating plate, an atomizing plate, a cold and heat exchange device, a water pump, a refrigeration semiconductor and a fan.

4. A vibration energy harvester performance testing system as claimed in claim 2, characterized in that: The temperature and humidity generator and the environment monitoring device are arranged inside the environment cavity; the vibration energy collector is arranged in the central area inside the environment cavity.

5. A vibration energy harvester performance testing system as claimed in claim 4, characterized in that: The electromagnetic field generator comprises: a magnetic field generator; Wherein, the magnetic field generator includes a Helmholtz coil group, and the two coils contained in the Helmholtz coil group are respectively arranged on both sides of the environmental cavity, for generating a magnetic field in the central area inside the environmental cavity.

6. A vibration energy harvester performance testing system as claimed in claim 5, characterized in that: The electromagnetic field generator further comprises: an electric field generator; Wherein, the electric field generator includes two capacitor plates connected to AC voltage or DC voltage, and the two capacitor plates are respectively arranged above and below the environmental cavity, and are used to generate AC electric field or DC electric field in the central area inside the environmental cavity.

7. A vibration energy harvester performance testing system as claimed in claim 4, characterized in that: An array module is arranged inside the environmental cavity; wherein the array module is used to install one or more vibration energy harvesters.

8. A vibration energy harvester performance testing system as claimed in claim 4, characterized in that: The environmental monitoring device comprises: an electric field sensor and a magnetic field sensor; Wherein, the electric field sensor is arranged inside the environmental cavity and is used to detect the electric field direction and electric field strength of the environment in which the vibration energy harvester is located; The magnetic field sensor is arranged inside the environmental cavity and is used to detect the magnetic field direction and magnetic field strength of the environment in which the vibration energy harvester is located.

9. A vibration energy harvester performance testing system as claimed in claim 1, characterized in that: Also includes: The vibration generating device is connected to the controller and is used to generate vibration signals of multiple vibration parameters in response to a third control signal from the user end or the controller; wherein the vibration parameters include vibration frequency and vibration acceleration; The signal acquisition and transmission module is also connected to the vibration energy collector, and is used to acquire a first electric energy signal output by the vibration energy collector, and transmit the first electric energy signal to the controller; The controller is further configured to generate the third control signal according to the first electric energy signal transmitted by the signal acquisition and transmission module, and feed the third control signal back to the vibration generating device.

10. A vibration energy harvester performance testing system as claimed in claim 9, characterized in that: The vibration generating device comprises: a power amplifier and an excitation platform connected to each other; The power amplifier is connected to the power supply, and is used to respond to the third control signal from the user end or the controller, to amplify the second power signal output by the power supply, and to obtain and output the corresponding third power signal; The vibration platform is used to convert the third electric energy signal output by the power amplifier into mechanical vibration to generate a corresponding vibration signal.

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