An electromagnetic composite friction nano-generator and a self-powered vehicle weight measurement system

Abstract

The invention discloses an electromagnetic composite friction nano-power generation device and a self-powered vehicle weight measurement system. The electromagnetic composite friction nano-power generation device includes a top cover, a multi-layer shell, a base, a FEP pick, a copper patch electrode, an aluminum shaft, a bearing, a magnet, and a coil; a magnet and a FEP pick are fixed under the top cover; the bearing and the multi-layer shell are fixed on the base, and each layer of the shell is wound with a coil; each layer of the shell is affixed with a copper patch electrode, which rubs with the FEP pick; the device greatly improves the output power through parallel connection and compounding. The self-powered vehicle weight measurement system includes a load plate, a rack, a gear, a gear bolt, a spring, a support seat, a copper patch electrode, a DAQ data acquisition card, and a display device; the displacement of the load plate causes the friction nano-generator to send a signal, thereby determining the measured weight.

Description

Technical Field

[0001] The present invention relates to the technical field of weight measurement, and in particular to an electromagnetic composite friction nanometer power generation device and a self-powered vehicle weight measurement system. Background Art

[0002] At present, the application of friction nano-power generation sensors is being vigorously promoted. In many occasions, measuring devices and sensors require external power supplies, while self-powered devices can greatly reduce resource consumption.

[0003] The friction nanogenerator is a new energy harvesting technology proposed in 2012. The basic principle of the friction nanogenerator (TENG) is the coupling of friction electrification and electrostatic induction. In recent years, environmental energy harvesting methods have been widely promoted. Collect energy from the surrounding environment in real time and convert the energy into electrical energy for storage or power supply. This method is greener, safer and more durable. It can collect various forms of mechanical energy and convert them into electrical energy. Compared with other power generation methods, TENG has the advantages of simple structure, easy installation, high power generation efficiency and low cost. And TENG has excellent performance in random direction and low frequency environment.

[0004] The general output power of the friction nanogenerator is at the microwatt or milliwatt level, which is not high for energy collection, so increasing the output power is the top priority for the wider promotion of the friction nanogenerator. The general friction nanogenerator can reach a voltage of volts and a current of microamperes. A voltage of tens of volts is sufficient for electrical signals, but the current of microamperes is indeed small, resulting in a low total output power, so it is difficult for devices with high power consumption to support operation.

[0005] In order to protect the highway, toll booths and important highway entrances have established overload detection projects. However, managing overload is still a very difficult task, and highway damage still occurs frequently. The existing highway vehicle weight measurement application has certain limitations. The existing vehicle weight measurement devices are mostly used in some important sections of the road, and are not fully popularized in many sections. The installation cost of the device is high, and an external power supply is required. For remote roads, power supply also requires a lot of manpower and material resources. Summary of the invention

[0006] The purpose of the present invention is to provide an electromagnetic composite friction nano-generator and a self-powered vehicle weight measurement system to solve the problems existing in the above-mentioned prior art. Energy is stored by combining a friction nano-generator (TENG) and an electromagnetic generator (EMG), and the weight of the vehicle is determined by the output signal of another friction nano-generator (TENG).

[0007] To achieve the above object, the present invention provides the following solution: The present invention provides an electromagnetic composite friction nano power generation device, including a top cover, a base, a shell layer, a magnet, a plastic paddle, a copper patch electrode and an aluminum shaft,

[0008] The inner side of the top cover is concentrically provided with multiple circles of vertical bar structures, the vertical bar structures on each circle are evenly spaced, and the positions of the vertical bar structures on each circle are corresponding; a magnet and a plastic pick are fixed in the bottom gap of the vertical bar structure, and the plastic pick is located on both sides of the magnet;

[0009] The base is provided with multiple circles of shell layers at positions corresponding to each circle of vertical stripe structures, and the copper patch electrodes are evenly distributed in each layer of the shell layers, and coils are wound around positions corresponding to the copper patch electrodes in each layer of the shell layers; the types of two adjacent copper patch electrodes are different, and the types of two spaced copper patch electrodes are the same, and the copper patch electrodes of the same type are connected by wires and collected and then led out of the base; the copper patch electrodes are used to rub with the plastic pick to form a friction nanogenerator II;

[0010] A bearing is installed at the center of the base, one end of the aluminum shaft is assembled at the bearing, and the other end passes through the center of the top cover and is connected to the driving part, and the aluminum shaft is fixed to the top cover.

[0011] Preferably, a plurality of circles of grooves are arranged on the base at positions corresponding to each circle of vertical bar structures, and the multiple layers of the outer shell are layered and fixed in each groove respectively.

[0012] Preferably, three circles of vertical bar structures are concentrically arranged on the inner side of the top cover, and the vertical bar structures on each circle are distributed at equal intervals of 90 degrees.

[0013] Preferably, the shell layers include a first shell layer, a second shell layer and a third shell layer, the diameters of which gradually decrease.

[0014] Preferably, the sizes of the plastic paddles in each circle of vertical bar structures corresponding to the first outer shell layer, the second outer shell layer and the third outer shell layer sequentially decrease in sequence.

[0015] Preferably, 16 copper patch electrodes are evenly distributed in each shell layer.

[0016] Preferably, the aluminum shaft is a multi-step shaft.

[0017] The present invention also provides a self-powered vehicle weight measurement system, comprising the above-mentioned electromagnetic composite friction nano-power generation device, and also comprising a rack, a gear, a spring, a support seat, an electrometer, a data acquisition card and a display device;

[0018] The vehicle is parked on the load plate, the top of the rack meshing with the gear is connected to the load plate, the bottom of the rack is connected to the spring installed on the support seat, and a plastic paddle is provided at the connection between the rack and the spring; the electromagnetic composite friction nano-generator is installed on the support seat, the gear is assembled on the other end of the aluminum shaft and locked by a gear bolt, a copper patch electrode is attached to the inner side of the support seat, and the plastic paddle at the bottom of the rack is used to rub with the copper patch electrode attached to the inner side of the support seat to form a friction nano-generator;

[0019] The electrometer and the display device are both electrically connected to the data acquisition card, and the electromagnetic composite friction nano-power generation device is used to supply power to the electrometer and the display device.

[0020] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0021] The electromagnetic composite friction nano-power generation device and the self-powered vehicle weight measurement system in the present invention can greatly improve the output power density per unit volume, store more energy per unit time, and thus realize self-powered vehicle weight measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 paying creative work.

[0023] Figure 1 This is the overall structure diagram of the vehicle weight measurement system;

[0024] Figure 2 This is the internal structure diagram of the electromagnetic composite friction nano power generation device;

[0025] Figure 3 This is a structural diagram of the rotating part of the electromagnetic composite friction nano-power generation device;

[0026] Figure 4 This is the electrode allocation diagram of the friction nanogenerator;

[0027] Figure 5 This is the circuit diagram of the self-powered system;

[0028] Figure 6 This is the output signal diagram of the friction nanogenerator;

[0029] Among them, 1 load plate; 2 base; 3 top cover; 4 aluminum shaft; 5 gear bolt; 6 support seat; 7 rack; 8 gear; 9 FEP pick; 10 copper patch electrode; 11 spring; 12 first shell; 13 second shell; 14 third shell; 15 bearing; 16 coil; 17 copper patch electrode; 18 FEP pick; 19 magnet; 20 electrode one; 21 electrode two. DETAILED DESCRIPTION

[0030] 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.

[0031] The purpose of the present invention is to provide an electromagnetic composite friction nano-generator and a self-powered vehicle weight measurement system to solve the problems existing in the above-mentioned prior art. Energy is stored by combining a friction nano-generator (TENG) and an electromagnetic generator (EMG), and the weight of the vehicle is determined by the output signal of another friction nano-generator (TENG).

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1-Figure 4 As shown, the present invention provides an electromagnetic composite friction nano power generation device, including: a top cover 3, a first shell 12, a second shell 13, a third shell 14, a base 2, a FEP pick 18, a copper patch electrode 17, an aluminum shaft 4, a bearing 15, a magnet 19 and a coil 16;

[0034] The top cover 3, the first shell 12, the second shell 13, the third shell 14 and the base 2 are all 3D printed parts; the first shell 12, the second shell 13, the third shell 14 and the bearing 15 are fixed on the base 2; the raised part of the base 2 is connected to the support seat 6; the top cover 3 is fixed to the aluminum shaft 4; the bottom of the top cover 3 is connected to multiple magnets 19; the FEP pick 18 is fixed in the middle of the magnet 19. The first shell 12, the second shell 13, and the third shell are all wound with a coil 16; the first shell 12, the second shell 13, and the third shell 14 are all affixed with copper patch electrodes 17.

[0035] Specifically, the top cover 3 is composed of a disc on the top and 12 vertical bars hanging down from the bottom. There is a gap in the middle of the vertical bar structure of the top cover 3, which is used to fix the magnet 19 and the FEP pick 18. The sizes of the FEP picks 18 are different because the sizes of each layer of electrodes are different. The FEP picks on the outermost layer are the largest, and the FEP picks on the innermost layer are the smallest. The aluminum shaft 4 is a multi-stage stepped shaft. The bearing 15 can ensure the verticality of the aluminum shaft 4 and play a guiding role, so that each layer of the FEP picks 18 rubs evenly with the copper patch electrodes 17 respectively.

[0036] Furthermore, the present invention also provides a self-powered vehicle weight measurement system, comprising a load plate 1, a rack 7, a gear 8, a plastic paddle (FEP paddle 9), a gear bolt 5, a spring 11, a support seat 6, and a copper patch electrode 10;

[0037] The top of the rack 7 is connected to the load plate 1; the bottom of the rack 7 is connected to the spring 11; the side of the rack 7 is connected to the FEP paddle 9; the rack 7 is meshed with the gear 8; the gear 8 and the aluminum shaft 4 are locked by the gear bolt 5; the FEP paddle 9 and the copper patch electrode 10 constitute a friction nanogenerator; the support seat 6 is connected to the spring 11; the copper patch electrode 10 is attached to the inner side of the support seat 6; the support seat 6 fixes the composite power generation device.

[0038] The vehicle stops on the load plate 1, and the rack 7 moves downward. The displacement of the rack 7 drives the gear 8 to rotate, which in turn drives the aluminum shaft 4 and the top cover 3 and the four sets of FEP paddles 18 and magnets 19 fixed on the top cover 3 to rotate. The FEP paddle 9 under the rack 7 rubs against the copper patch electrode 10 on the inner side of the support seat 6 to send out an electrical signal.

[0039] Figure 4 The electrode distribution diagram of the friction nanogenerator is shown in the figure; the figure shows half of a single-layer shell, with 8 electrodes on each side. In fact, the number of electrodes attached to each side of the shell is 16. There are two types of electrodes, 8 of which are electrode one 20 and 8 of which are electrode two 21. Figure 4 Each electrode can be used as the same type of electrode. Then the same type of electrodes on the inner and outer sides are connected together at the bottom, and then two wires are led out through the hole at the bottom of the shell, and finally the wires of the three layers of shell are output in parallel.

[0040] Figure 5The circuit diagram of the self-powered system includes the whole device, electrometer, DAQ data acquisition card, and display device. When the vehicle stops on the load plate 1, the load plate 1 moves downward, so that TENG1 (friction nanogenerator 1) generates a corresponding electrical signal, which is collected by the DAQ data acquisition card, and the vehicle weight is displayed on the display device after processing by the Labview module. At the same time, the load plate 1 moves downward, so that TENG2 (friction nanogenerator 2) and EMG rotate to generate electricity. Because TENG2 and EMG output alternating current, the electricity is stored in the capacitor through the rectifier, which is used to power the display device and the electrometer.

[0041] Figure 6 The output signal of the friction nanogenerator is shown in Figure 2. The number of waves in the output electrical signal of TENG1 represents the downward distance. According to the force formula of the spring:

[0042] F=k·x

[0043] Therefore, the weight of the vehicle can be calculated based on the electrical signal.

[0044] The purpose of the present invention is to provide a power generation device that combines friction nano-power generation and electromagnetic power generation, as well as a self-powered vehicle weight measurement system. The electrical signal of the friction nano-generator 1 generated according to the displacement distance of the load plate 1 reflects the measured weight, and then the vehicle weight is displayed through a display device. At the same time, according to the displacement distance of the load plate 1, the gear 8 rotates, thereby driving the friction nano-generator 2 and the electromagnetic generator to rotate. The design of the friction nano-generator 2 with double-sided friction, multi-layer structure per unit volume, number of electrodes, position arrangement, multi-layer parallel output, and composite design with electromagnetic power generation can greatly improve the output power density per unit volume, and can store more electricity per unit time for powering the display device.

[0045] Specifically, in the present invention, the downward pressure of the load plate 1 drives the rack 7 to move; the FEP paddle 9 below the rack 7 determines the weight carried on the load plate 1 by outputting a signal through friction with the copper electrode on the support seat 6, thereby realizing a self-powered vehicle weight measurement system. Then, the composite energy storage of friction nano-power generation and electromagnetic power generation is used to power the display device and display the vehicle weight.

[0046] The rack 7 drives the gear 8 to rotate; the gear 8 drives the aluminum shaft 4 to rotate; the aluminum shaft 4 drives the top cover 3 to rotate; the top cover 3 drives the magnet 19 and the FEP paddle 18 to rotate. Through the rotation of the magnet, power generation is performed according to the principle of electromagnetic induction; the FEP paddle 18 rubs against the copper electrodes of each layer, and then according to the principle of power generation of the friction nanogenerator, the charge is transferred between the two copper electrodes, and a potential difference is generated between the two electrodes, which drives the movement of the electrons in the external circuit and outputs them to the outside. Due to the multi-layer winding of the coil 16, the double-sided friction of the paddle, the multi-layer structure in the unit volume, the arrangement of the number and position of the electrodes, the parallel output of the multi-layer, and the combination of friction nano-power generation and electromagnetic power generation, the output power density per unit volume is greatly improved, and more energy can be stored per unit time.

[0047] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0048] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A self-powered vehicle weight measurement system, characterized in that: The electromagnetic composite friction nano-power generation device also includes a rack, a gear, a spring, a support seat, an electrometer, a data acquisition card and a display device. An electromagnetic composite friction nano-power generation device, including a top cover, a base, a shell layer, a magnet, a plastic paddle, a copper patch electrode and an aluminum shaft; The inner side of the top cover is concentrically provided with multiple circles of vertical bar structures, the vertical bar structures on each circle are evenly spaced, and the positions of the vertical bar structures on each circle are corresponding; a magnet and a plastic pick are fixed in the bottom gap of the vertical bar structure, and the plastic pick is located on both sides of the magnet; The base is provided with multiple circles of shell layers at positions corresponding to each circle of vertical stripe structures, and the copper patch electrodes are evenly distributed in each layer of the shell layers, and coils are wound around positions corresponding to the copper patch electrodes in each layer of the shell layers; the types of two adjacent copper patch electrodes are different, and the types of two spaced copper patch electrodes are the same, and the copper patch electrodes of the same type are connected by wires and collected and then led out of the base; the copper patch electrodes are used to rub with the plastic pick to form a friction nanogenerator II; A bearing is installed at the center of the base, one end of the aluminum shaft is assembled at the bearing, and the other end passes through the center of the top cover and is connected to the driving part, and the aluminum shaft is fixed to the top cover; The vehicle is parked on the load plate, the top of the rack meshing with the gear is connected to the load plate, the bottom of the rack is connected to the spring installed on the support seat, and a plastic paddle is provided at the connection between the rack and the spring; the electromagnetic composite friction nano-generator is installed on the support seat, the gear is assembled on the other end of the aluminum shaft and locked by a gear bolt, a copper patch electrode is attached to the inner side of the support seat, and the plastic paddle at the bottom of the rack is used to rub with the copper patch electrode attached to the inner side of the support seat to form a friction nano-generator; The electrometer and the display device are both electrically connected to the data acquisition card, and the electromagnetic composite friction nano-power generation device is used to supply power to the electrometer and the display device.

2. The self-powered vehicle weight measurement system according to claim 1, characterized in that: A plurality of circles of grooves are arranged on the base at positions corresponding to each circle of vertical bar structures, and the multiple layers of the outer shells are respectively fixed in the grooves in layers.

3. The self-powered vehicle weight measurement system according to claim 1 is characterized in that: Three circles of vertical bar structures are concentrically arranged on the inner side of the top cover, and the vertical bar structures on each circle are distributed at equal intervals at ninety degrees.

4. The self-powered vehicle weight measurement system according to claim 3, characterized in that: The shell layers include a first shell layer, a second shell layer and a third shell layer, the diameters of which gradually decrease.

5. The self-powered vehicle weight measurement system according to claim 4, characterized in that: The sizes of the plastic paddles in each circle of vertical strip structures corresponding to the first outer shell layer, the second outer shell layer and the third outer shell layer are reduced in sequence.

6. The self-powered vehicle weight measurement system according to claim 3, characterized in that: Sixteen copper patch electrodes are evenly distributed in each shell layer.

7. The self-powered vehicle weight measurement system according to claim 1, characterized in that: The aluminum shaft is a multi-stage stepped shaft.

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