Light-humidity coupling energy collection device and light-humidity coupling power supply method for sensor

Abstract

The invention discloses a light and humidity coupling energy collection device and a light and humidity coupling power supply method for a sensor, and relates to the technical field of light and humidity coupling. The system comprises an energy collection unit, the energy collection unit comprises an energy controller, two input ends of the energy controller are respectively connected to a photovoltaic panel and a water photovoltaic array, and the energy controller is also respectively connected to an energy storage capacitor. The light-humidity coupling energy collection device and method have the advantages that the function of utilizing natural humidity energy and light energy in the same system at the same time is achieved, the input power provided only by water photovoltaic power generation is creatively improved through the energy storage and conversion module and photovoltaic coupling, and the energy utilization rate is increased. Meanwhile, photovoltaic coupling supplements the capability of working in the whole time period, especially at night, for photovoltaic power supply, extremely weak energy generated by wet-based power generation is stored and then supplies power to modules such as a sensor, and the problem of energy supply of low-power-consumption electronic devices and Internet of Things equipment far away from a power transmission line is solved greenly and reliably.

Description

Technical Field

[0001] The present invention relates to the technical field of optical wet coupling, in particular to an optical wet coupling energy collection device and an optical wet coupling power supply method for a sensor. Background Art

[0002] At present, smart grids, smart transportation, smart buildings and other fields urgently need to deploy a large number of small sensors to collect information. The problem of short lifespan when using batteries to power them is that there is an urgent need to develop environmental energy harvesting technology as a sustainable energy source. Mainstream environmental energy harvesting technologies such as photovoltaics have high energy density, but they are highly dependent on the weather and cannot guarantee reliable power supply 24 hours a day. Hydrovoltaic power generation technology uses the electrical coupling between nanostructured materials and water to convert the energy contained in the water cycle into electrical energy. For example, the direct interaction between nanostructured materials and water flow, dripping water droplets, water waves, evaporated body water and ubiquitous moisture in the environment is used to generate electricity. Since water and moisture are everywhere, this power generation method has the advantage of not being restricted by climatic conditions and geographical locations, and can guarantee 24-hour power supply, but its energy density is low. Therefore, the above two environmental energy harvesting methods are organically integrated through a certain strategy, which is expected to complement each other's advantages and provide a new solution to the power supply problem of sensors.

[0003] The present invention is developed to address the problem that most existing sensors cannot achieve self-power supply and are difficult to meet the requirements of application scenarios that require continuous data detection or multiple data detection requirements within a long time span. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is how to simultaneously integrate photovoltaic power generation and hydroelectric power generation to power the microsensor.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a light-humidity coupling energy collection device, comprising an energy collection unit and an energy controller, wherein two input ends of the energy controller are respectively connected to a photovoltaic panel and a hydroelectric array, and the energy controller is also respectively connected to an energy storage capacitor.

[0008] As a preferred solution of the optical-wet coupling energy harvesting device described in the present invention, the photovoltaic panel is composed of n photovoltaic cells connected in series, wherein n is a positive integer greater than or equal to 2; the positive pole of the photovoltaic panel is connected to the first input terminal of the energy controller, and the negative pole of the photovoltaic panel is connected to the ground terminal of the energy controller.

[0009] As a preferred solution of the optical-wet coupling energy harvesting device described in the present invention, wherein: the hydrovoltaic array includes m wet-based power generation components, the m wet-based power generation components constitute an array of p columns * q rows, and the wet-based power generation components in the same column are connected in series, wherein p and q are both positive integers not less than 2.

[0010] As a preferred solution of the optical-wet coupling energy harvesting device described in the present invention, wherein: the wet-based power generation component includes a wet-based generator and a rectifier diode connected in parallel; the wet-based generator includes a parallel upper electrode layer and a lower electrode layer, an oxide film layer is filled between the upper electrode layer and the lower electrode layer, and the upper electrode layer is in contact with atmospheric moisture.

[0011] As a preferred solution of the optical-wet coupling energy harvesting device described in the present invention, the output end of the rectifier diode is the positive electrode of the hydrovoltaic array; the positive electrode of the hydrovoltaic array is connected to the second input end of the energy controller, and the negative electrode of the photovoltaic panel is connected to the ground end of the energy controller.

[0012] As a preferred solution of the optical wet-coupled energy harvesting device described in the present invention, the energy storage capacitor includes an input capacitor and an output capacitor, the two ends of the input capacitor are respectively connected to the VIN input terminal and the ground terminal of the energy controller, and the two ends of the output capacitor are respectively connected to the VCC output terminal and the ground terminal of the energy controller.

[0013] As a preferred solution of the optical-wet coupling energy harvesting device of the present invention, the energy controller is further provided with a first output voltage pin and a second output voltage pin, and the first output voltage pin and the second output voltage pin are grounded or at a high level.

[0014] As a preferred solution of the optical wet coupling energy harvesting device described in the present invention, it also includes: a transmission unit, including a sensor and a transmitter, the sensor is connected to the output capacitor, and the transmitter and the sensor are electrically connected; a receiving unit, including a receiver, and the receiver is adapted to the transmitter.

[0015] As a preferred solution of the optical wet-coupled energy harvesting device of the present invention, the receiver is grounded through a regulated power supply.

[0016] In order to solve the above technical problems, the present invention also provides the following technical solutions: a method for powering a sensor with optical wet coupling, using the above optical wet coupling energy collection device, including the following steps: the first output voltage pin of the energy controller is grounded and the second output voltage pin is connected to a high level, and the output voltage of the energy controller is set to 3.3V; all or any one of the photovoltaic panels and the hydrovoltaic array charges the energy storage capacitor, and the energy storage capacitor powers the sensor; when the sensor is working, the receiver receives the signal from the antenna and lights up the LED signal light, stops after 2s, and lights up repeatedly; when all the photovoltaic panels and the hydrovoltaic array stop working and the energy storage capacitor is lower than the minimum input voltage of the sensor, the sensor stops working.

[0017] Beneficial effects of the present invention: The present invention realizes the function of simultaneously utilizing natural wet energy and light energy in the same system through a light-wet coupling energy collection device and method, and innovatively uses an energy storage and conversion module. Photovoltaic coupling improves the input power provided only by hydrovoltaic power generation. At the same time, hydrovoltaic coupling supplements photovoltaic power supply with the ability to work all the time, especially at night. The extremely weak energy generated by wet-based power generation is stored and then used to power modules such as sensors, thus solving the energy supply problem of low-power electronic devices and Internet of Things devices far away from power transmission lines in a green and reliable way. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 Schematic diagram of the energy harvesting unit of the optical-wet coupling energy harvesting device described in the present invention.

[0020] Figure 2 This is an overall structural diagram of the wet-based generator described in the present invention.

[0021] Figure 3 Schematic diagram of the transmission unit and the receiving unit of the optical-wet coupling energy harvesting device described in the present invention.

[0022] Figure 4 It is a schematic diagram of the open circuit voltage output of the hydrovoltaic array described in the present invention under different humidity conditions.

[0023] Figure 5 It is a schematic diagram of the short-circuit current output of the hydrovoltaic array described in the present invention under different humidity conditions.

[0024] Figure 6This is a schematic diagram of the changes in the input voltage and output capacitor voltage of the energy controller during the charging and discharging process under the two working states of wet-based power generation and light-wet coupling of the present invention.

[0025] Figure 7 This is a schematic diagram of the changes in the input voltage and output capacitor voltage of the energy controller under different types of environmental information in the two working states of wet-based power generation and light-wet coupling of the present invention.

[0026] Figure 8 It is the discharge curve of the energy storage element under the condition of no energy input. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1, reference Figure 1 , which is the first embodiment of the present invention, provides a light-wet coupling energy harvesting device, including an energy harvesting unit 100, including an energy controller 101, the two input ends of the energy controller 101 are respectively connected to a photovoltaic panel 102 and a hydrovoltaic array 103, and the energy controller 101 is also respectively connected to an energy storage capacitor 104.

[0031] The energy controller 101 is preferably a LTC3588 module rectifier bridge.

[0032] Photovoltaic panels 102 convert solar energy into electrical energy, while hydrovoltaic arrays 103 utilize the flow or pressure changes of water to generate electrical energy.

[0033] The energy controller is the core part of the device. It uses the LTC3588 module rectifier bridge to rectify and regulate the power generated by the photovoltaic panels and hydroelectric arrays. The LTC3588 module has a high-efficiency rectification function and a buck converter, which can convert the collected power into stable DC power and provide it to the energy storage capacitor.

[0034] Energy storage capacitors are used to store the electrical energy rectified and regulated by the energy controller so that they can power external loads when needed. When the electrical energy generated by photovoltaic panels and hydroelectric arrays is not enough to directly supply the load, the energy storage capacitor can release the stored electrical energy to ensure the continuous operation of the load.

[0035] Example 2, reference Figure 4 and Figure 5 , which is the second embodiment of the present invention, and is different from the previous embodiment in that: this embodiment provides a photovoltaic panel 102, which is composed of n photovoltaic cells connected in series, where n is a positive integer greater than or equal to 2; the positive pole of the photovoltaic panel 102 is connected to the first input terminal PZ1 of the energy controller 101, and the negative pole of the photovoltaic panel 102 is connected to the ground terminal GND of the energy controller 101.

[0036] exist Figure 4 and Figure 5 In tests under different humidity conditions, the voltage and current outputs generated by the wet-based device are relatively stable and vary with humidity. However, the energy provided by hydrovoltaic power supply alone is limited. Figure 5 The output current of the hydrovoltaic device is only 3mA in a high humidity environment (RH=86.9) and without load. When connected to the sensor, the potential difference generated by the Debye effect will decay rapidly, and the equivalent output power provided by the actual hydrovoltaic power will not exceed 4mW. However, under 4000Lux, 3000K illumination, the voltage generated by the photovoltaic panel can be easily stabilized at 8V or even higher, and the input power can exceed 8mW, which is important for sensors that need to work continuously or capacitor voltage needs to be increased rapidly.

[0037] Example 3, reference Figure 2 , which is the third embodiment of the present invention, and is different from the previous two embodiments in that: this embodiment provides a hydrovoltaic array 103, including m wet-based power generation components, the m wet-based power generation components constitute an array of p columns and q rows, and the wet-based power generation components in the same column are connected in series, wherein p and q are both positive integers not less than 2.

[0038] The wet-based power generation component includes a wet-based generator 103a and a rectifier diode 103b connected in parallel; the wet-based generator includes a parallel upper electrode layer 103a-1 and a lower electrode layer 103a-2, an oxide film layer 103a-3 is filled between the upper electrode layer 103a-1 and the lower electrode layer 103a-2, and the upper electrode layer 103a-1 is in contact with atmospheric moisture.

[0039] The output end of the rectifier diode 103b is the positive electrode of the hydrovoltaic array 103; the positive electrode of the hydrovoltaic array 103 is connected to the second input terminal PZ2 of the energy controller 101, and the negative electrode of the photovoltaic panel 102 is connected to the ground terminal GND of the energy controller 101.

[0040] The upper electrode layer 103a-1 containing carbon nanotubes realizes moisture absorption and charge conversion, the oxide film layer 103a-3 conducts water vapor, a built-in electric field is formed between the upper electrode layer 103a-1 and the oxide film layer 103a-3 to promote unidirectional ion transport, and the lower electrode layer 103a-2 performs charge conversion.

[0041] Figure 6 and Figure 7 The input and output voltages under different working conditions of wet-based power generation and light-wet coupled power generation shown in the figure show that the capacitor voltage can still quickly recover to 3.3V after the sensor has worked for many times. When there is a water-powered device at the input end, the sensor worked for 139 times continuously, and the continuous working time is 536s; when there is no external power supply, the capacitor voltage sensor only works for 78 times and then stops, and the continuous working time is 244s. Figure 8 As shown in the figure, the capacitor voltage can remain above 1V after 14 hours without any energy input. The introduction of the hydrovoltaic device increases the working time of the system and enables the system to continue to work in outdoor environments.

[0042] Example 4, reference Figure 3 and Figure 4 , which is the fourth embodiment of the present invention, and is different from the previous three embodiments in that: this embodiment provides an energy storage capacitor, including an input capacitor C1 and an output capacitor C2 104, wherein both ends of the input capacitor C1 are respectively connected to the VIN input terminal and the ground terminal GND of the energy controller 101, and both ends of the output capacitor C2 are respectively connected to the VCC output terminal and the ground terminal GND of the energy controller 101.

[0043] Select appropriate input capacitors and output capacitors to protect the input and output ends of the energy controller chip. Since there are dedicated energy storage capacitors in the system, the values ​​of the output capacitors and input capacitors do not need to be too large. They can be adjusted between 10-500μF according to the actual use effect so as not to affect the normal function of the energy controller. The input capacitor and output capacitor are connected in parallel at the input and output ends of the energy controller respectively.

[0044] Select a storage capacitor of appropriate capacity (such as a supercapacitor) and connect it in parallel between the output terminal of the energy controller and the GND terminal to store energy and supply energy to subsequent components. For micro-power sensor devices, a supercapacitor of tens to hundreds of μF can meet the needs.

[0045] According to different usage scenarios, the sensor device that needs to be powered is connected to the electrodes of the energy storage capacitor.

[0046] Example 5, reference Figure 1 and Figure 2, which is the sixth embodiment of the present invention, and which is different from the previous five embodiments in that: this embodiment provides an energy controller 101 that is also provided with a first output voltage pin D0 and a second output voltage pin D1, and the first output voltage pin D0 and the second output voltage pin D1 are grounded or at a high level.

[0047] In the LTC-3588 energy harvesting power management chip, the D0 and D1 pins are used to set the output voltage. The combination of these two pins can configure the chip to provide four different output voltages, namely 1.8V, 2.5V, 3.3V and 3.6V. Specifically:

[0048] When both D1 and D0 are grounded (D1=D0=0), the output voltage is set to 1.8V.

[0049] When D1 is grounded and D0 is connected to a high level (D1=0, D0=1), the output voltage is set to 2.5V.

[0050] When D1 is connected to a high level and D0 is grounded (D1=1, D0=0), the output voltage is set to 3.3V.

[0051] When both D1 and D0 are connected to a high level (D1=D0=1), the output voltage is set to 3.6V.

[0052] The configuration of these pins allows the user to select the appropriate output voltage according to application requirements. For example, if you need to power a microcontroller operating at 3.3V, you can set D1 high and D0 low. This design provides flexibility, allowing the LTC-3588 to adapt to different energy harvesting application scenarios.

[0053] Example 6, reference Figure 3 , which is the seventh embodiment of the present invention, and is different from the previous six embodiments in that: this embodiment provides a transmission unit 200, including a sensor MT and a transmitter E1, the sensor MT is connected to the output capacitor C2, and the transmitter E1 and the sensor MT are electrically connected; the receiving unit 300, including a receiver E2, and the receiver E2 is adapted to the transmitter E1.

[0054] Receiver E2 is connected to ground via a regulated power supply DC.

[0055] Specifically, it is an application example of using an optical-humidity coupled environmental energy harvesting device to power wireless sensor network nodes.

[0056] In the example, photovoltaics, as a powerful supplement to hydrovoltaic power generation, has raised the power generation capacity and load level of hydrovoltaic devices to a new height. The distance sensor and the RF signal transmitter are connected and then connected to the energy storage capacitor. By storing and converting the output power of the humidity sensor, the power supply of devices with power consumption of more than 100μW is successfully achieved. Compared with the previous research on hydrovoltaic devices that could only light up the LED array, the application scenario has been greatly improved, and a new possible solution is provided for the actual production and life transformation of hydrovoltaic sensors.

[0057] Example 7, reference Figure 5-Figure 8 , which is the fifth embodiment of the present invention, and which is different from the first four embodiments in that: this embodiment provides an optical wet coupling energy harvesting device using claim 8 or 9, comprising the following steps,

[0058] The first output voltage pin D0 of the energy controller 101 is grounded and the second output voltage pin D1 is connected to a high level, and the output voltage of the energy controller 101 is set to 3.3V; all or any one of the photovoltaic panels 102 and the hydrovoltaic array 103 charges the energy storage capacitor 104, and the energy storage capacitor 104 supplies power to the sensor MT; when the sensor MT is working, the receiver E2 receives the signal from the antenna and lights up the LED signal light, stops after 2s, and lights up repeatedly; when all the photovoltaic panels 102 and the hydrovoltaic array 103 stop working and the energy storage capacitor 104 is lower than the minimum input voltage of the sensor MT, the sensor MT stops working.

[0059] Using the optical-wet coupling system requires placing the system in an environment that can provide humidity and light. The system has four working states:

[0060] The sensor does not work when there is no moisture or light, when the capacitor charge is low and the system voltage is low.

[0061] When there is no moisture but light, and the relative humidity is low (such as in hot sun), the output energy is lower than the minimum input threshold of LTC3588, and the system only has photovoltaic as energy input, the capacitor is charged, and the voltage rises. The sensor can work normally, the receiver receives the signal from the antenna, the LED can light up, stop after 2s, and the cycle repeats.

[0062] When there is moisture but no light, when there is no light but moisture still exists in the environment (such as working conditions at night), the system only has water potential energy input, the voltage of the capacitor increases after charging, and the sensor can work normally.

[0063] When there is moisture and light, the photovoltaic and hydrovoltaic devices work simultaneously, the capacitor charging speed is further accelerated, and the sensor works normally.

[0064] Finally, remove all power supplies and observe that the capacitor voltage slowly decreases. The remaining power stored in the capacitor can still achieve a certain number of distance sensing, but as the energy is exhausted, the voltage is lower than the minimum input voltage of the sensor and it can no longer work.

[0065] Embodiment 8 is the eighth embodiment of the present invention, and it is different from the first seven embodiments in that: this embodiment provides the present invention to adapt to different types of micro sensor power supply scenarios, specifically a flexible humidity sensor.

[0066] By testing the charging capacity of the capacitor with the sensor, it was observed that when the capacitor was connected in parallel with the hydrovoltaic device, the capacitor voltage increased, proving that the charging was successful, that is, the hydrovoltaic device can supply energy to the power system alone. When light appears, the capacitor voltage value increases, and when the light disappears, the capacitor voltage value remains unchanged.

[0067] In the test experiment under normal working conditions of optical-wet coupling, after the voltage reached 3.28V, the capacitor voltage stopped increasing due to the control of the maximum output voltage of LTC3588. When the water-voltage device was continuously powered at the input end, the sensor worked continuously for 139 times, and the continuous working time was 536s; when there was no external power supply, the capacitor voltage sensor worked continuously for 78 times and then stopped, and the continuous working time was 244s. It can be seen that optical-wet coupling can increase the number of system operations to 178.2% of that without energy input, and the working time is increased by 119.7%.

[0068] When powered only by capacitors, the sensor does not sense the distance signal and the light array does not light up; when the hand approaches the sensor, the sensor outputs a high level, the RF antenna transmits a signal, and then the gateway node completes signal capture and analysis, the light array lights up, and all system functions are verified and successfully implemented. The experimental verification of the self-powered technology application platform of humidity sensors in low-light and high-humidity environments further confirms the feasibility of the application of hydrovoltaic devices combined with photovoltaic devices in actual production and life, especially in the field of full-time grid energy supply.

[0069] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in the application (e.g., mounting arrangements, use of materials, color, changes in orientation, etc.). For example, the element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0070] Additionally, in an effort to provide a concise description of example embodiments, all features of an actual implementation may not be described.

[0071] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0072] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A light-wet coupling energy harvesting device, characterized in that: include, The energy harvesting unit (100) comprises an energy controller (101), wherein two input ends of the energy controller (101) are respectively connected to a photovoltaic panel (102) and a hydroelectric array (103), and the energy controller (101) is also respectively connected to an energy storage capacitor (104).

2. The optical-wet coupling energy harvesting device according to claim 1, characterized in that: The photovoltaic panel (102) is composed of n photovoltaic cells connected in series, where n is a positive integer greater than or equal to 2; The positive pole of the photovoltaic panel (102) is connected to the first input terminal (PZ1) of the energy controller (101), and the negative pole of the photovoltaic panel (102) is connected to the ground terminal (GND) of the energy controller (101).

3. The optical-wet coupling energy harvesting device according to claim 2, characterized in that: The hydrovoltaic array (103) comprises m wet-based power generation components, wherein the m wet-based power generation components form an array of p columns and q rows, and the wet-based power generation components in the same column are connected in series, wherein p and q are both positive integers not less than 2.

4. The optical-wet coupling energy harvesting device according to claim 3, characterized in that: The wet-based power generation assembly comprises a wet-based power generator (103a) and a rectifier diode (103b) connected in parallel with each other; The wet-based generator comprises a parallel upper electrode layer (103a-1) and a lower electrode layer (103a-2), an oxide film layer (103a-3) is filled between the upper electrode layer (103a-1) and the lower electrode layer (103a-2), and the upper electrode layer (103a-1) is in contact with atmospheric moisture.

5. The optical-wet coupling energy harvesting device according to claim 4, characterized in that: The output end of the rectifier diode (103b) is the positive electrode of the hydrovoltaic array (103); The positive pole of the hydrovoltaic array (103) is connected to the second input terminal (PZ2) of the energy controller (101), and the negative pole of the photovoltaic panel (102) is connected to the ground terminal (GND) of the energy controller (101).

6. The optical-wet coupling energy harvesting device according to claim 5, characterized in that: The energy storage capacitor (104) comprises an input capacitor (C1) and an output capacitor (C2), wherein two ends of the input capacitor (C1) are respectively connected to a VIN input end and a ground end (GND) of the energy controller (101), and two ends of the output capacitor (C2) are respectively connected to a VCC output end and a ground end (GND) of the energy controller (101).

7. The optical-wet coupling energy harvesting device according to any one of claims 1 to 6, characterized in that: The energy controller (101) is also provided with a first output voltage pin (D0) and a second output voltage pin (D1), wherein the first output voltage pin (D0) and the second output voltage pin (D1) are grounded or at a high level.

8. The optical-wet coupling energy harvesting device according to claim 7, characterized in that: Also includes, A transmission unit (200) comprises a sensor (MT) and a transmitter (E1), wherein the sensor (MT) is connected in parallel with an output capacitor (C2), and the transmitter (E1) and the sensor (MT) are electrically connected; The receiving unit (300) comprises a receiver (E2), wherein the receiver (E2) is adapted to the transmitter (E1).

9. The optical-wet coupling energy harvesting device according to claim 8, characterized in that: The receiver (E2) is grounded via a regulated power supply (DC).

10. A method for powering a sensor by optical wet coupling, characterized in that: Using the optical wet coupling energy harvesting device as claimed in claim 8 or 9 comprises the following steps: The first output voltage pin (D0) of the energy controller (101) is grounded and the second output voltage pin (D1) is connected to a high level, and the output voltage of the energy controller (101) is set to 3.3V; All or any one of the photovoltaic panels (102) and the hydroelectric array (103) charges the energy storage capacitor (104), and the energy storage capacitor (104) supplies power to the sensor (MT); When the sensor (MT) is working, the receiver (E2) receives the signal from the antenna and lights up the LED signal light, stops after 2 seconds, and lights up again; When all of the photovoltaic panels (102) and the hydroelectric array (103) stop working and the energy storage capacitor (104) is lower than the minimum input voltage of the sensor (MT), the sensor (MT) stops working.

Images