Voltage detection system based on friction nanometer generator

Abstract

The utility model relates to the field of voltage detection, and particularly provides a voltage detection system based on a friction nanometer generator, which comprises an alternating current voltage acquisition card, a numerical control force frequency driving device, a function signal generator, a power amplifier, an upper computer and a direct current power supply. The numerical control force frequency driving device comprises a base, a fixed steel plate, a threaded steel bar, a vibration exciter, a first acrylic plate, a friction nanometer generator, a second acrylic plate and a movable steel plate. According to the utility model, the numerical control force frequency driving device is taken as the center to drive the friction nanometer generator to work, and signals are acquired by the AC voltage acquisition card and uploaded to the host computer for display and image drawing. According to the utility model, the magnitude and the frequency of the stress of the friction nanometer generator are changed through the numerical control force frequency driving device, and the output voltage of the friction nanometer generator in different working states is detected; by changing the position of a movable steel plate in the numerical control force frequency driving device, the output voltage of the friction nanometer generator with different thicknesses and volumes is detected.

Description

Technical Field

[0001] The utility model belongs to the field of voltage detection systems, and in particular relates to a voltage detection system based on a friction nanogenerator. Background Art

[0002] In modern daily life, with the development of the Internet of Things and sensor technology, electronic devices are gradually miniaturized, the distribution of sensors has become widespread and disordered, and more and more small electronic devices and sensor networks have emerged. How to power these electronic devices and networks has become a difficult problem. Due to the disorder of electronic devices and sensor networks, traditional fixed power sources are obviously unable to meet the needs. In this environment and under this need, nanogenerator technology came into being.

[0003] The emergence of the friction nanogenerator (TENG) fills the gap in this field. TENG can use the principle of friction electrification to power subsequent circuits. Since 2006, TENG has been used in many fields, such as medical wearable devices, biometrics, and water wave energy collection. However, the detection of the high impedance and unstable voltage output of TENG has become a problem that technicians need to solve urgently. Utility Model Content

[0004] In view of this, the present invention aims to solve the problem of providing a voltage detection system based on a friction nanogenerator, which can improve the above-mentioned problem.

[0005] A voltage detection system based on a friction nanogenerator, characterized in that it comprises a numerically controlled force-frequency drive device (9) for fixing the friction nanogenerator, a function signal generator (10), a power amplifier (11), a host computer (12), a direct current power supply (13) and an alternating current voltage acquisition card (14). The components of the numerically controlled force-frequency drive device (9) are as follows: Figure 1 As shown, it includes a base (1), a fixed steel plate (2), a threaded steel bar (3), an exciter (4), a No. 1 acrylic plate (5), a friction nanogenerator (6), a No. 2 acrylic plate (7) and a movable steel plate (8). For the stability and safety of the system structure, all components in the CNC force-frequency drive device are made of, but not limited to, stainless steel unless otherwise specified.

[0006] Furthermore, the connection method of the components of the CNC force-frequency drive device (9) is as follows: the vibrator (4) is suspended horizontally above the base (1) and supported by screws, and the fixed steel plate (2) is vertically connected to the vibrator (4) and connected to the bottom end of the base (1).

[0007] Furthermore, the tapped end of the vibrator (4) is connected to the first acrylic plate (5), the movable steel plate (8) is connected to the second acrylic plate (7), and the movable steel plate (8) is vertically placed on the base (1), so that the two acrylic plates form an opposing structure. At the same time, four threaded steel bars (3) are used to connect the movable steel plate (8) to the base (1) and the fixed steel plate (2).

[0008] Furthermore, the opposing surfaces of the two acrylic plates are covered with copper foil with conductive glue as electrodes.

[0009] Furthermore, the overall diagram of the voltage detection system described in the present invention is as follows: the function signal generator (10) is connected to the input end of the power amplifier (11), and the numerical control force frequency driving device (9) is connected to the output end of the power amplifier (11).

[0010] Furthermore, the AC voltage acquisition card (14) is connected to the electrode on the second acrylic plate (7). At the same time, the power supply end of the AC voltage acquisition card (14) is connected to the DC power supply (13).

[0011] Furthermore, the friction nanogenerator (6) generates an alternating current voltage, and the alternating current voltage acquisition card (14) acquires the data and displays, stores, and draws an image through the host computer (12) via a USB interface.

[0012] The beneficial effects of the novel use are as follows: by changing the output voltage and frequency of the function signal generator (10), the numerical control force-frequency driving device (9) will also change the magnitude and frequency of the force exerted by the first acrylic plate (5) on the friction nanogenerator (6) and detect it, thereby changing the output voltage of the friction nanogenerator (6), and the output voltage of the same friction nanogenerator after being subjected to different frequencies and extrusion forces can be detected. The movable steel plate (8) in the multi-frequency variable force excitation compression device can change the distance between the two acrylic plates (5) and (7) through the detachable function of the four threaded steel bars (3), so that it can be applied to the output voltage detection of the friction nanogenerator of the same material at different thicknesses and volumes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the numerical control force frequency driving device of the utility model;

[0014] Figure 2 The overall structure of the system of the utility model;

[0015] The reference numerals in the figures are as follows:

[0016] 1 is a base, 2 is a fixed steel plate, 3 is a threaded steel bar, 4 is an exciter, 5 is a No. 1 acrylic plate, 6 is a friction nanogenerator, 7 is a No. 2 acrylic plate, 8 is a moving steel plate, 9 is a CNC force-frequency drive device, 10 is a function signal generator, 11 is a power amplifier, 12 is a host computer, 13 is a DC power supply, and 14 is an AC voltage acquisition card. DETAILED DESCRIPTION

[0017] In order to make the technical solution and advantages of the present invention more clear and understandable, the following will combine the drawings of the present invention to provide a detailed and complete description of the detection method of the present invention through embodiments.

[0018] In this embodiment, Figure 1 The schematic diagram of the structure of a numerically controlled force frequency driving device designed in the present invention is as follows: Figure 1 As shown, the numerical control force-frequency drive device assembly comprises: a base (1), a fixed steel plate (2), a threaded steel bar (3), an exciter (4), a No. 1 acrylic plate (5), a friction nanogenerator (6), a No. 2 acrylic plate (7) and a movable steel plate (8).

[0019] In this embodiment, except for the acrylic plate, the other components are all stainless steel structures, and the specific dimensions are: base (13cm×8cm×1cm), movable steel plate (8cm×8cm×1cm), fixed steel plate (8cm×9cm×1cm), acrylic plate (5cm×5cm×1cm), the vibrator is a cylindrical structure with a length of 9cm and a radius of 3cm, and the threaded steel bar is a cylindrical structure with a length of 18cm and a radius of 0.25cm.

[0020] In this embodiment, the connection method of the CNC force-frequency drive device components is as follows: the vibrator (4) is suspended horizontally above the base (1) and supported by screws, the fixed steel plate (2) is vertically connected to the vibrator (4) and the bottom of the base (1), the tap end of the vibrator (4) is connected to the No. 1 acrylic plate (5), and the movable steel plate (8) is connected to a No. 2 acrylic plate (7) of the same size as the No. 1 acrylic plate. The movable steel plate (8) stands vertically on the base (1) so that the two acrylic plates form an opposing structure. At the same time, four threaded steel bars (3) are used to connect the movable steel plate (8) to the base (1) and the fixed steel plate (2).

[0021] In this embodiment, the specific detection process is as follows: Figure 2 shown.

[0022] In this embodiment, the function signal generator (10) is connected to the input end of the power amplifier (11), and the numerical control force frequency driving device (9) is connected to the output end of the power amplifier (11). The function signal generator (10) outputs a plurality of voltages of different magnitudes and frequencies, which are amplified by the power amplifier (11) and then transmitted to the numerical control force frequency driving device (9). The exciter (6) in the numerical control force frequency driving device starts to work, and the No. 1 acrylic plate (5) at the tap end thereof starts to compress the friction nanogenerator (6). Since the frequency and magnitude of the input voltage are adjustable, the compression frequency and compression force of the multi-frequency variable force excitation compression device (1) on the friction nanogenerator can be controlled.

[0023] In this embodiment, the friction nanogenerator used is a rectangular parallelepiped structure of 2 cm×2 cm×1 cm. The movable plate (8) is adjusted to a position where the No. 1 acrylic plate (5) can just fix the friction nanogenerator (6), and then connected with the threaded steel bar.

[0024] In this embodiment, the acquisition card (14) and Figure 1 The electrodes on the second acrylic board (7) are connected, and at the same time, the power supply end of the AC voltage acquisition card (14) is connected to the DC power supply (13). The DC power supply (12) provides a voltage of 10-15V for the acquisition card to supply power.

[0025] In this embodiment, the AC voltage acquisition card (14) acquires and transmits the AC voltage to the Figure 1 The output voltage data of the friction nanogenerator (6) inside is displayed, stored and graphed via a host computer (12).

[0026] The above are only specific implementations in this embodiment. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in this application, which should be included in the protection scope of this application.

Claims

1. A voltage detection system based on a friction nanogenerator, characterized in that: The invention comprises a numerical control force-frequency driving device (9) for fixing a friction nanogenerator, a function signal generator (10), a power amplifier (11), a host computer (12), a direct current power supply (13) and an alternating current voltage acquisition card (14), wherein the components of the numerical control force-frequency driving device (9) include a base (1), a fixed steel plate (2), a threaded steel bar (3), an exciter (4), a first acrylic plate (5), a friction nanogenerator (6), a second acrylic plate (7) and a movable steel plate (8); The opposing surfaces of the two acrylic plates are covered with copper foil with conductive glue as electrodes, and the AC voltage acquisition card (14) is connected to the electrodes on the second acrylic plate (7). At the same time, the power supply end of the AC voltage acquisition card (14) is connected to the DC power supply (13), and the power amplifier (11) is electrically connected to the exciter (4).

2. A voltage detection system based on a friction nanogenerator according to claim 1, characterized in that: The vibrator (4) is suspended horizontally on the base (1) and supported by screws, and a fixed steel plate (2) is vertically connected to the vibrator (4) and connected to the bottom end of the base (1).

3. The voltage detection system based on the friction nanogenerator according to claim 1 is characterized in that: The tap end of the vibrator (4) is connected to the first acrylic plate (5), the movable steel plate (8) is connected to the second acrylic plate (7), and the movable steel plate (8) is vertically placed on the base (1), so that the two acrylic plates form an opposing structure.

4. The voltage detection system based on the friction nanogenerator according to claim 1 is characterized in that: Four threaded steel bars (3) connect the movable steel plate (8) with the base (1) and the fixed steel plate (2).

5. The voltage detection system based on the friction nanogenerator according to claim 1, characterized in that: The function signal generator (10) is connected to the input end of the power amplifier (11), and the digital control force frequency driving device (9) is connected to the output end of the power amplifier (11), so as to provide energy for the digital control force frequency driving device.

6. The voltage detection system based on the friction nanogenerator according to claim 1, characterized in that: The AC voltage acquisition card (14) acquires the data and displays, stores and draws images through the host computer (12) via the USB interface.

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