CN-121984373-A - Power management device and motion monitoring system adopting same

CN121984373ACN 121984373 ACN121984373 ACN 121984373ACN-121984373-A

Abstract

The invention discloses a power management device and a motion monitoring system adopting the power management device, which belong to the technical field of nano friction generators, and specifically comprise a friction nano generator, wherein a power generation unit of the friction nano generator is connected to a clamping rectifying circuit through a rotary mechanical switch, and the clamping rectifying circuit is connected to a step-down regulating circuit; the driving unit of the friction nano generator is driven by a wind wheel, and the rotary mechanical switch is arranged on the friction nano generator to rotate along with the friction nano generator and is used for controlling the on-off of a gap of the power generation unit. The invention can solve the problems of high alternating current output characteristic, high crest factor, unstable output and the like of the traditional friction nano generator at present.

Inventors

HUANG ZHAOLING
WANG JIAQI
CHEN YIJIE
WU JINGYI
Weng Shuda
ZENG QI
GONG YUBING
CAI MIAO

Assignees

桂林电子科技大学

Dates

Publication Date: 20260505
Application Date: 20260302

Claims (10)

1. A power management device is characterized by comprising a friction nano-generator, wherein a power generation unit of the friction nano-generator is connected to a clamping rectifying circuit through a rotary mechanical switch, the clamping rectifying circuit is connected to a voltage reduction regulating circuit, a driving unit of the friction nano-generator is driven by a wind wheel, and the rotary mechanical switch is arranged on the friction nano-generator to rotate along with the friction nano-generator and is used for controlling the gap on-off of the power generation unit.
2. The power management device according to claim 1, wherein the power generation unit comprises a stator, a rotor and a fixed base, the fixed base is provided with a front-back transparent accommodating cavity, the front end and the rear end of the fixed base are provided with two supporting frames, the centers of the two supporting frames are rotatably connected with a rotating shaft and the rotating shaft is positioned in the middle of the transparent direction of the accommodating cavity, the rotor is fixedly connected to the front part of the rotating shaft, the middle part of the rotor is fixedly connected with a wind wheel, the rotary mechanical switch is arranged at the rear part of the rotating shaft, the rotor is provided with an outer cylindrical frame, four friction brushes are uniformly arranged in the circumferential direction of the outer cylindrical frame, eight electrodes which are uniformly arranged in the circumferential direction are arranged on the inner wall of the accommodating cavity, the friction brushes are capable of generating potential differences, and the friction brushes are connected to the rotary mechanical switch, and the electrodes and the rotary mechanical switch are connected to the clamping rectifying circuit.
3. The power management device of claim 1, wherein the electrode comprises a copper foil, the copper foil being attached to the negative friction material layer.
4. A power management device according to claim 3, wherein the negative friction material layer is made of PTFE material or FEP material.
5. A power management device according to claim 3, wherein the friction brush is made of nylon fibers.
6. A power management device according to claim 3, wherein the rotary mechanical switch comprises a comb-shaped copper brush, connecting arms, a fixing sleeve and a copper plate, the fixing sleeve is made of insulating materials and is fixedly connected to the rotating shaft, the connecting arms are two, one end of each connecting arm is symmetrically and fixedly connected to the fixing sleeve, the other end of each connecting arm is fixedly connected with the comb-shaped copper brush which is elastically bent, the comb-shaped copper brush can be elastically contacted with the copper plate in a simple manner in the rotating process, the copper plate is fixedly connected to the inner wall of the accommodating cavity, and the copper plate and the comb-shaped copper brush are connected to the clamping rectifying circuit.
7. The power management device of claim 6, wherein the copper plate is provided with charge trapping holes.
8. The power management apparatus according to claim 7, wherein the charge trapping holes are formed in a kidney-shaped hole structure, and are arranged symmetrically in a longitudinal direction of the copper plate in two rows.
9. A motion monitoring system employing the power management device of any one of claims 1-8, comprising a controller, a sensor module and a human-machine interaction module, wherein the sensor module is used for detecting blood oxygen, body temperature, heart rate, blood pressure and number of motion steps of a human body, the sensor module and the human-machine interaction module are connected to the controller, the controller is also connected to the power management device, and the power management device is also connected to the sensor module and the human-machine interaction module.
10. The motion monitoring system of claim 9, wherein the sensor module comprises a JFC103 heart rate blood pressure module, an MPU6050 posture sensor, an LM75B body temperature sensor, a DHT11 ambient temperature and humidity sensor.

Description

Power management device and motion monitoring system adopting same Technical Field The invention belongs to the technical field of nano friction generators, and particularly relates to a power management device and a motion monitoring system adopting the power management device. Background Renewable energy refers to energy which can be continuously regenerated and continuously utilized in natural environment. Renewable energy sources, and has the characteristics of reproducibility, environmental friendliness and the like. Common renewable energy sources include clean energy sources such as solar energy, wind energy, water energy, and the like. These energy sources are widely available in nature, and development and promotion of renewable clean energy has become a necessary choice for solving the energy crisis of today. In order to solve the problems, a friction nano generator device for wind energy collection is provided. Electromagnetic generators developed based on faraday's law of electromagnetic induction have been widely used for collecting renewable energy. However, electromagnetic generators are less efficient at capturing energy at low operating frequencies, and cost issues have also led to the use of electromagnetic generators for energy capture in low frequency environments. The generator can convert tiny mechanical energy into electric energy based on the coupling of friction electrification and electrostatic induction. The traditional friction nano generator has the problems of high alternating current output characteristic, high crest factor, unstable output and the like. Disclosure of Invention The invention aims to solve the technical problems of high alternating current output characteristic, high crest factor, unstable output and the like of the traditional friction nano generator at present. The power management device comprises a friction nano-generator, wherein a power generation unit of the friction nano-generator is connected to a clamping rectifying circuit through a rotary mechanical switch, the clamping rectifying circuit is connected to a voltage reduction regulating circuit, a driving unit of the friction nano-generator is driven by a wind wheel, and the rotary mechanical switch is arranged on the friction nano-generator to rotate in a following way and is used for controlling the gap on-off of the power generation unit. Preferably, the above-mentioned power generation unit includes stator, rotor and fixed base, fixed base is provided with the front and back penetrating chamber that holds, fixed base front and back end is provided with two braced frames, two braced frame center swivelling joint have the pivot and the pivot is located the penetrating direction middle part of holding the chamber, rotor fixed connection is in the pivot upper front portion, rotor middle part fixedly connected with wind wheel, rotary mechanical switch installs at the pivot rear portion, the rotor is provided with outer cylinder frame, outer cylinder frame circumference evenly is provided with four friction brushes, be provided with eight electrodes that circumference evenly arranges on the just right chamber inner wall that holds of rotor, friction brush swivelling friction electrode can produce the potential difference, friction brush is connected to rotary mechanical switch, electrode and rotary mechanical switch are connected to clamp rectifier circuit. Preferably, the electrode includes a copper foil to which the negative friction material layer is attached. Preferably, the negative friction material layer is made of PTFE material or FEP material. Preferably, the friction brush is made of nylon fibers. Preferably, the rotary mechanical switch comprises comb-shaped copper brushes, connecting arms, fixing sleeves and copper plates, wherein the fixing sleeves are made of insulating materials and are fixedly connected to the rotating shafts, the connecting arms are two, one ends of the connecting arms are symmetrically and fixedly connected to the fixing sleeves, the other ends of the connecting arms are fixedly connected with the comb-shaped copper brushes which are elastically bent, the elastic contact of the comb-shaped copper brushes can be broken in the rotating process of the comb-shaped copper brushes on the copper plates, the copper plates are fixedly connected to the inner walls of the accommodating cavities, and the copper plates and the comb-shaped copper brushes are connected to the clamping rectifying circuit. Preferably, the copper plate is provided with a charge trapping hole. Preferably, the charge trapping holes have a kidney-shaped hole structure, and are symmetrically arranged in the length direction of the copper plate in two rows. The motion monitoring system adopting the power management device comprises a controller, a sensor module and a human-computer interaction module, wherein the sensor module is used for detecting blood oxygen, body temperature, heart rate, blood pressure a