A device and method for real-time monitoring of voltage distribution of hydrovoltaic devices

Abstract

The present invention relates to a device and method for real-time monitoring of the voltage distribution of a hydrovoltaic device, comprising a holding tank for holding liquid, the holding tank being provided with an upper cover, the holding tank further provided with a fixing portion, and the hydrovoltaic device to be tested being arranged in the holding tank via the fixing portion; an image acquisition unit for acquiring real-time images of the hydrovoltaic device to be tested; a detection unit comprising a multimeter and a detection probe, the multimeter being connected to the detection probe, and the detection probe being connected to the hydrovoltaic device to be tested during testing; and a control unit connected to the image acquisition unit and the detection unit, and obtaining the real-time voltage distribution of the hydrovoltaic device to be tested by comparing a V-T curve with a real-time image diagram. The present invention can accurately monitor the real-time voltage of the hydrovoltaic device to be tested, and can acquire a real-time climbing image of the capillary area of ​​the hydrovoltaic device to be tested, thereby being able to explore the relationship between its voltage and the capillary area, and obtain a more accurate voltage distribution of the hydrovoltaic device to be tested.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrovoltaic effect monitoring, and in particular to a device and method for real-time monitoring of voltage distribution of hydrovoltaic devices. Background Art

[0002] The hydrovoltaic effect is a phenomenon in which an electromotive force (EMF) is generated by the interfacial interaction between water and certain materials. This effect has attracted widespread attention for its potential to harvest sustainable energy from spontaneous natural processes, such as water diffusion, water flow or evaporation, and heat transfer. It has the potential to provide innovative and clean power for our rapidly growing human society. Artificial micro- and nanochannels in certain materials, such as MoS2, metal-organic frameworks, and polyimides, have been found to exhibit promising power generation capabilities when water interacts with their surfaces, based on biomimetic and selective ion transport behaviors. Materials capable of generating the hydrovoltaic effect include carbon nanomaterials, semiconductor nanomaterials, organic nanomaterials, and composite nanomaterials. Generators fabricated from these specialized materials are believed to involve charge separation mechanisms induced by the electrical double layer (EDL) at the solid-liquid interface and water flow. Furthermore, their energy conversion capabilities can be improved by modulating the intrinsic or structural characteristics of the materials, such as surface charge density and channel size. At present, in the research of hydrovoltaics, people have found that the interaction between water and nanoparticles due to capillary action can generate electrical signals. In lateral hydrovoltaic devices, the voltage will have a certain distribution along the capillary climbing area, and the maximum voltage will exist at the top of the capillary climbing area (capillary front).

[0003] In the prior art, the voltage measurement method for a hydrovoltaic device is to apply conductive carbon paste to various locations in the capillary area to act as electrodes, and then measure the voltage at the specified position. However, due to factors such as unstable climbing of the capillary area of ​​the hydrovoltaic device and hand shaking during manual measurement in actual situations, the measurement process is unstable and the data obtained from the test is inaccurate. In addition, it is currently uncertain whether the conductive carbon paste will affect the hydrovoltaic effect. Therefore, the climbing process of the capillary area of ​​the hydrovoltaic device cannot be accurately observed, making it difficult to accurately obtain the distribution of voltage in the capillary climbing area of ​​the hydrovoltaic device, which is not conducive to a more detailed study of the voltage and current generated in the capillary area. Summary of the Invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a device and method for real-time monitoring of the voltage distribution of a hydrovoltaic device. The device of the present invention can accurately monitor the real-time voltage of the hydrovoltaic device to be tested, and can collect the real-time climbing image of the capillary area of ​​the hydrovoltaic device to be tested, so as to explore the relationship between its voltage and capillary area and obtain a more accurate voltage distribution of the hydrovoltaic device to be tested.

[0005] In order to solve the above technical problems, the present invention provides a device for real-time monitoring of voltage distribution of a water-voltage device, which is used to monitor the voltage distribution data of the water-voltage device, including:

[0006] A holding tank for holding liquid, the holding tank being provided with an upper cover and a fixing portion being provided in the holding tank, and the water-voltage device to be tested being arranged in the holding tank through the fixing portion;

[0007] An image acquisition unit, which is used to acquire real-time images of the hydroelectric device to be tested;

[0008] The detection unit includes a multimeter and a detection probe, wherein the multimeter is connected to the detection probe, and during testing, the detection probe is connected to the water-voltage device to be tested;

[0009] a control unit connected to the image acquisition unit and the detection unit;

[0010] The multimeter transmits the collected voltage and current signals of the hydrovoltaic device to be tested to the control unit to obtain the VT curve of the hydrovoltaic device to be tested. The image acquisition unit transmits the collected real-time image of the hydrovoltaic device to be tested to the control unit, and obtains the real-time voltage distribution of the hydrovoltaic device to be tested by comparing the VT curve and the real-time image.

[0011] Preferably, the detection probe is a platinum needle electrode, the detection unit is further provided with a movable platform, and the platinum needle electrode is connected to the movable platform.

[0012] Preferably, the fixing portion includes a protrusion symmetrically arranged in the accommodating groove, and the water-voltage device to be tested is clamped between the protrusion and the inner wall of the accommodating groove.

[0013] Preferably, the side walls of the accommodating groove extend in the height direction to form a support plate.

[0014] Preferably, the image acquisition unit comprises a microscope and an industrial camera connected to each other.

[0015] Preferably, it further comprises a mounting plate, and the accommodating groove, the image acquisition unit and the detection unit are arranged on the mounting plate.

[0016] Preferably, the receiving groove is transparent, and the upper cover is provided with a through hole.

[0017] Preferably, a blowing device is also included.

[0018] The present invention also provides a method for real-time monitoring of voltage distribution of a hydroelectric device, which uses the above-mentioned device for real-time monitoring of voltage distribution of a hydroelectric device to monitor the voltage distribution of the hydroelectric device to be tested, including:

[0019] Step S1, sample preparation, preparing a transparent or translucent substrate, attaching the hydrovoltaic material to the substrate to form a hydrovoltaic device to be tested;

[0020] Step S2, fixing the water-voltage device to be tested so that one end of the water-voltage device to be tested is immersed in water;

[0021] Step S3, measuring and collecting voltage and current data of the hydrovoltaic device to be tested, obtaining a VT curve, and simultaneously performing image acquisition on the hydrovoltaic device to be tested;

[0022] Step S4, obtaining the real-time voltage distribution of the hydrovoltaic device to be tested by comparing the VT curve and the real-time image.

[0023] Preferably, in steps S2 and S3, after the water-voltage device to be tested is fixed, air is blown on the water-voltage device to be tested.

[0024] Preferably, in step S3, the water level is controlled to keep the water level constant. The method for keeping the water level constant includes setting a receiving tank and an upper cover, fixing the water-voltage device to be tested in the receiving tank, pouring water into the receiving tank, and covering it with the upper cover, and replenishing water into the receiving tank to keep the water level constant.

[0025] The above technical solution of the present invention has the following advantages over the prior art:

[0026] The device and method for real-time monitoring of the voltage distribution of a hydrovoltaic device described in the present invention, by providing a receiving groove, an image acquisition unit, a detection unit, and a control unit, can accurately observe and capture images of the climbing process of the capillary region of the hydrovoltaic device to be tested, and can monitor the electrical signal of the target position of the hydrovoltaic device to be tested through the detection unit to obtain the VT curve of the hydrovoltaic device to be tested. By comparing the VT curve of the hydrovoltaic device to be tested with the real-time image, its real-time voltage distribution can be obtained. Furthermore, the device can also be used to explore the relationship between the voltage of the hydrovoltaic device to be tested and the climbing position of the capillary region after the climbing region is stabilized. The device of the present invention can accurately monitor the real-time voltage of the hydrovoltaic device to be tested and can capture the real-time climbing image of the capillary region of the hydrovoltaic device to be tested, thereby exploring the relationship between its voltage and the capillary region and obtaining a more accurate voltage distribution of the hydrovoltaic device to be tested. The method of the present invention controls the evaporation conditions of the capillary water climbing area of ​​the hydrovoltaic device to be tested, including wind speed, water level, temperature and humidity, so as to make the capillary climbing area of ​​the hydrovoltaic device to be tested more stable, thereby facilitating data acquisition stability and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

[0028] Figure 1 It is a structural diagram of the best embodiment of the present invention.

[0029] Figure 2 It is a schematic diagram of the receiving tank structure of the best embodiment of the present invention.

[0030] Figure 3 It is a schematic diagram of the upper cover structure of the best embodiment of the present invention.

[0031] Figure 4 This is a stable image of the capillary rise region of the hydrovoltaic device to be tested in the best embodiment of the present invention.

[0032] Figure 5 This is a relatively stable VT curve collected in the best embodiment of the present invention.

[0033] Figure 6 This is a comparison diagram of the hydrovoltaic effect voltage distribution of the best embodiment of the present invention.

[0034] Explanation of the reference numerals in the specification: 1. Receiving groove; 10. Bump; 11. Support plate; 2. Upper cover; 3. Detection probe; 4. Multimeter; 5. Computer; 6. Microscope; 7. Mounting plate; 8. Blowing device; 9. Light source. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0036] Example 1

[0037] Reference Figures 1 to 2 As shown, the present invention discloses a device for real-time monitoring of voltage distribution of a hydrovoltaic device, which is used to monitor voltage distribution data of a hydrovoltaic device. The device includes:

[0038] The receiving tank 1 is used to hold liquids. The receiving tank 1 is provided with an upper cover 2. The bottom of the receiving tank 1 is provided with a bottom plate. The receiving tank 1 is also provided with a fixing portion. The water-voltage device to be tested can be stably set in the receiving tank 1 through the fixing portion. It should be noted that the upper cover 2 can reduce the evaporation of water, and when there is enough water in the receiving tank 1, the hydrophilicity of the upper cover 2 can be used to keep the liquid surface level close to the water-voltage device to be tested in a relatively constant state, thereby keeping the water level at a relatively stable level at the contact position with the water-voltage device to be tested. The upper cover 2 is made of a transparent material, which makes it easy to observe the amount of water. When conducting the test, add a certain amount of water to the receiving tank 1 to ensure that there is enough water supply during the test to avoid the capillary climbing area of ​​the water-voltage device to be tested from disappearing quickly due to evaporation, and immerse one end of the water-voltage device to be tested in water;

[0039] An image acquisition unit, which is used to acquire real-time images of the hydrovoltaic device to be tested, wherein the real-time images include images of the capillary region of the hydrovoltaic device to be tested during the climbing process;

[0040] The detection unit includes a detection probe 3 and a multimeter 4. The multimeter 4 is connected to the detection probe 3. During testing, the detection probe 3 is connected to the water-voltage device to be tested.

[0041] A control unit connected to the image acquisition unit and the detection unit, the control unit including a computer 5, the image acquisition unit uploading the acquired image information to the control unit, and the detection unit uploading the voltage and current data of the hydroelectric device to be tested to the control unit;

[0042] The multimeter 4 transmits the collected voltage and current signals of the hydrovoltaic device to be tested to the control unit to obtain the VT curve of the hydrovoltaic device to be tested. The image acquisition unit transmits the collected real-time image of the hydrovoltaic device to be tested to the control unit, and obtains the real-time voltage distribution of the hydrovoltaic device to be tested by comparing the VT curve and the real-time image.

[0043] From this, it can be seen that the device for real-time monitoring of the voltage distribution of a hydrovoltaic device to be protected by the present invention can accurately observe and collect images of the climbing process of the capillary area of ​​the hydrovoltaic device to be tested by setting a receiving groove, an image acquisition unit, a detection unit and a control unit, and can monitor the electrical signal of the target position of the hydrovoltaic device to be tested through the detection unit to obtain the VT curve of the hydrovoltaic device to be tested, and by comparing the VT curve of the hydrovoltaic device to be tested with the real-time image diagram, its real-time voltage distribution can be obtained. Furthermore, the use of this device can also explore the relationship between the voltage and the climbing position of the capillary area of ​​the hydrovoltaic device to be tested after the climbing area is stabilized. The present invention can accurately monitor the real-time voltage of the hydrovoltaic device to be tested, and can collect real-time climbing images of the capillary area of ​​the hydrovoltaic device to be tested, so as to explore the relationship between its voltage and the capillary area, and obtain a more accurate voltage distribution of the hydrovoltaic device to be tested.

[0044] Furthermore, the detection probe 3 is a platinum needle electrode. Through polishing, the contact area between the platinum needle electrode and the water-voltage device to be measured can be made small, which is conducive to improving the accuracy of the measurement. It should be noted that since platinum itself is an inert metal, it will not participate in the reaction, thereby avoiding its influence on the water-voltage effect. The detection unit is also provided with a movable table, which is a high-precision displacement table. The platinum needle electrode is clamped on the high-precision displacement table. In this way, the platinum needle electrode can be driven by the high-precision displacement table to perform micron-level displacement, thereby making the measurement more accurate and avoiding interference factors such as jitter during manual measurement.

[0045] Furthermore, the fixing portion includes a protrusion 10 symmetrically arranged in the receiving groove 1, and the water-voltage device to be tested is clamped between the protrusion 10 and the inner wall of the receiving groove 1, thereby fixing the water-voltage device to be tested.

[0046] In detail, the side wall of the accommodating groove 1 extends upward in the height direction to form a support plate 11. The support plate 11 can support the water-voltage device to be measured, thereby avoiding large deformation of the water-voltage device to be measured when the platinum needle electrode is lowered during the measurement process.

[0047] Specifically, the image acquisition unit includes an interconnected microscope 6 and an industrial camera. Since industrial cameras are typically only capable of capturing images at the micrometer level, while the hydrovoltaic effect typically occurs at the nanometer level, a microscope 6 is required. The industrial camera and microscope 6 are combined to capture images, obtaining nanometer-level image information. The combination of the industrial camera and microscope 6 allows for intuitive display of captured images on a computer 5. Using the image acquisition unit, the position of the capillary front of the hydrovoltaic device under test can be determined, allowing for clear observation of the entire capillary climb process. Testers can also use the microscope 6 for real-time observation.

[0048] It should be noted that the apparatus for real-time monitoring of the voltage distribution of a hydrovoltaic device further includes a mounting plate 7, upon which the receiving tank 1, light source unit, movable stage, image acquisition unit, and detection unit are all disposed. In this embodiment, the mounting plate 7 is an optical breadboard, thereby preventing wobbling, effectively improving data accuracy, and minimizing changes in the capillary front position or water level caused by wobbling during the capillary region climb of the hydrovoltaic device under test. The receiving tank 1, light source unit, movable stage, image acquisition unit, and detection unit are secured to the optical breadboard using standard M6 screws.

[0049] From a detailed point of view, the containing tank 1 is made of transparent material, which makes it easy to observe the water level. The upper cover 2 is provided with a through hole so that the tester can use a syringe to add or subtract water through the through hole, thereby avoiding fluctuations in the water level in the containing tank 1.

[0050] It should be noted that the device for real-time monitoring of the voltage distribution of a hydrovoltaic device of the present invention also includes a blowing device 8, which is a fan with adjustable wind speed. When performing measurements, the fan blows air toward the hydrovoltaic device to be measured, thereby keeping the capillary water position of the hydrovoltaic device to be measured constant and avoiding changes in the capillary water level due to unstable external environmental wind.

[0051] The present invention also provides a device for real-time monitoring of voltage distribution of a hydrovoltaic device. A light source 9 is selected as a non-stroboscopic light source to avoid inconsistency with the reception frequency of the industrial camera, which would affect imaging. Furthermore, a light source with adjustable brightness is selected to meet different testing requirements.

[0052] Example 2

[0053] The present invention also discloses a method for real-time monitoring of voltage distribution of a hydroelectric device, which uses the above-mentioned device for real-time monitoring of voltage distribution of a hydroelectric device to monitor the voltage distribution of the hydroelectric device to be tested, including:

[0054] Step S1: Prepare the hydrovoltaic device to be tested. Prepare a transparent or translucent substrate and attach the hydrovoltaic material to the substrate to form the hydrovoltaic device to be tested. In this embodiment, the substrate is a 0.05 mm thick alumina ceramic sheet. The hydrovoltaic material is attached to the alumina ceramic sheet to form a light-transmitting hydrovoltaic device to be tested.

[0055] Step S2, fixing the water-voltage device to be tested in a height direction so that one end of the water-voltage device to be tested is immersed in water;

[0056] Step S3, measuring the voltage and current data of the hydrovoltaic device to be tested by a multimeter, uploading the data to the computer 5, and obtaining the VT curve of the hydrovoltaic device to be tested. At the same time, real-time images of the hydrovoltaic device to be tested are captured by a microscope 4 and an industrial camera, and the captured image information is uploaded to the computer 5;

[0057] Step S4, obtaining the real-time voltage distribution of the hydrovoltaic device to be tested by comparing the VT curve and the real-time image.

[0058] Furthermore, in steps S2 and S3, after the water-voltage device to be tested is fixed, the water-voltage device to be tested is blown with air by the blowing device 8.

[0059] Furthermore, in step S3, the water level in the receiving tank 1 is controlled to keep the water level relatively constant. The method for keeping the water level relatively constant includes setting a receiving tank 1 and an upper cover 2, fixing the water-voltage device to be tested in the receiving tank 1, pouring water into the receiving tank 1, and covering the upper cover 2. The receiving tank 1 and the upper cover 2 are both made of transparent materials to facilitate observation of the water level, and water is added to the receiving tank 1 in time to keep the water level relatively constant.

[0060] It should be noted that during the monitoring process, the room temperature was maintained at 18-30 degrees Celsius and the humidity did not exceed 40% RH.

[0061] It should be noted that, referring to Figures 4 to 6 ,in, Figure 4 To maintain a stable image of the capillary climbing area of ​​the hydrovoltaic device to be tested, when the capillary front can remain in position for at least half an hour without changing, it indicates that the evaporation conditions of the entire capillary climbing area are relatively constant, reflecting that the present invention has better control capabilities over the capillary climbing area of ​​the hydrovoltaic device to be tested.

[0062] Figure 5 This is a relatively stable VT curve collected.

[0063] Figure 6 This is a comparison diagram of the voltage distribution of the hydrovoltaic effect, which shows the distribution relationship between the voltage of the hydrovoltaic device and the position of its capillary area.

[0064] In summary, the present invention aims to protect a device and method for real-time monitoring of the voltage distribution of a hydrovoltaic device. By providing a receiving groove, an image acquisition unit, a detection unit, and a control unit, the device and method can accurately observe and capture images of the climbing process of the capillary region of the hydrovoltaic device to be tested, and can monitor the electrical signal of the target position of the hydrovoltaic device to be tested through the detection unit to obtain the VT curve of the hydrovoltaic device to be tested. By comparing the VT curve of the hydrovoltaic device to be tested with the real-time image, the real-time voltage distribution of the device can be obtained. Furthermore, the device can also be used to explore the relationship between the voltage of the hydrovoltaic device to be tested and the climbing position of the capillary region after the climbing region is stabilized. The device of the present invention can accurately monitor the real-time voltage of the hydrovoltaic device to be tested, and can capture the real-time climbing image of the capillary region of the hydrovoltaic device to be tested, thereby exploring the relationship between the voltage and the capillary region and obtaining a more accurate voltage distribution of the hydrovoltaic device to be tested.

[0065] The method of the present invention controls the evaporation conditions of the capillary water climbing area of ​​the hydrovoltaic device to be tested, including wind speed, water level, temperature and humidity, so as to make the capillary climbing area of ​​the hydrovoltaic device to be tested more stable, thereby facilitating data acquisition stability and accuracy.

[0066] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A device for real-time monitoring of voltage distribution of a hydroelectric device, used for monitoring voltage distribution data of a hydroelectric device, characterized by: include, A holding tank for holding liquid, the holding tank being provided with an upper cover and a fixing portion being provided in the holding tank, and the water-voltage device to be tested being arranged in the holding tank through the fixing portion; An image acquisition unit, which is used to acquire real-time images of the hydroelectric device to be tested; The detection unit includes a multimeter and a detection probe, wherein the multimeter is connected to the detection probe, and during testing, the detection probe is connected to the water-voltage device to be tested; a control unit connected to the image acquisition unit and the detection unit; The multimeter transmits the collected voltage and current signals of the hydrovoltaic device to be tested to the control unit to obtain the VT curve of the hydrovoltaic device to be tested. The image acquisition unit transmits the collected real-time image of the hydrovoltaic device to be tested to the control unit, and obtains the real-time voltage distribution of the hydrovoltaic device to be tested by comparing the VT curve and the real-time image.

2. The device for real-time monitoring of voltage distribution of a hydroelectric device according to claim 1, characterized in that: The detection probe is a platinum needle electrode, and the detection unit is further provided with a movable platform, and the platinum needle electrode is connected to the movable platform.

3. The device for real-time monitoring of voltage distribution of a hydroelectric device according to claim 1, characterized in that: The fixing portion includes a protrusion symmetrically arranged in the accommodating groove, and the water-voltage device to be tested is clamped between the protrusion and the inner wall of the accommodating groove.

4. The device for real-time monitoring of voltage distribution of a hydroelectric device according to claim 3, characterized in that: The side walls of the accommodating groove extend along the height direction to form a supporting plate.

5. The device for real-time monitoring of voltage distribution of a hydroelectric device according to claim 1, characterized in that: The image acquisition unit includes a microscope and an industrial camera connected to each other.

6. The device for real-time monitoring of voltage distribution of a hydroelectric device according to claim 1, characterized in that: It also includes a mounting plate, and the accommodating groove, the image acquisition unit and the detection unit are arranged on the mounting plate.

7. The device for real-time monitoring of voltage distribution of a hydroelectric device according to claim 1, characterized in that: The receiving groove is transparent, and the upper cover is provided with a through hole.

8. The device for real-time monitoring of voltage distribution of a hydroelectric device according to claim 1, characterized in that: Also includes a hairdryer.

9. A method for real-time monitoring of voltage distribution of a hydroelectric device, characterized by: The device for real-time monitoring of voltage distribution of a hydrovoltaic device as claimed in claims 1 to 8 is used to monitor the voltage distribution of the hydrovoltaic device to be tested, comprising: Step S1, sample preparation, preparing a transparent or translucent substrate, attaching the hydrovoltaic material to the substrate to form a hydrovoltaic device to be tested; Step S2, fixing the water-voltage device to be tested so that one end of the water-voltage device to be tested is immersed in water; Step S3, measuring and collecting voltage and current data of the hydrovoltaic device to be tested, obtaining a VT curve, and simultaneously performing image acquisition on the hydrovoltaic device to be tested; Step S4, obtaining the real-time voltage distribution of the hydrovoltaic device to be tested by comparing the VT curve and the real-time image.

10. The method for real-time monitoring of voltage distribution of a hydroelectric device according to claim 9, characterized in that: In the steps S2 and S3, after the water-voltage device to be tested is fixed, air is blown on the water-voltage device to be tested.

11. The method for real-time monitoring of voltage distribution of a hydroelectric device according to claim 9, characterized in that: In step S3, the water level is controlled to keep the water level constant. The method for keeping the water level constant includes setting a receiving tank and an upper cover, fixing the water-voltage device to be tested in the receiving tank, filling water into the receiving tank, and covering it with the upper cover, and replenishing water into the receiving tank to keep the water level constant.

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