Wind-induced vibration energy collection device for power supply of tire pressure monitoring system

A tire pressure monitoring system and energy collection technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of low power density, large volume and mass, Difficult to MEMS and other problems, to achieve the effect of simple structure, high power generation, and security

Inactive Publication Date: 2017-02-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0006] Turbine-type micro-wind energy harvesters usually have complex mechanisms, large volume and mass, and are difficult to manufacture with MEMS (micro-machines); while micro-wind energy harvesters based on the mechanism of wind-induced vibration have the disadvantage of low power generation density, and need to adopt new method or new structure to improve its power generation efficiency

Method used

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  • Wind-induced vibration energy collection device for power supply of tire pressure monitoring system
  • Wind-induced vibration energy collection device for power supply of tire pressure monitoring system
  • Wind-induced vibration energy collection device for power supply of tire pressure monitoring system

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specific Embodiment approach

[0035] The wind speed of the vehicle mounted on the wind-induced vibration collection device 2 on the surface of the tire 1 is the superposition of two motions: one is the movement of each point on the tire 1 around the central axis of the tire in the local coordinate system; the other is in the global coordinate system, Advancement of tire 1 center axis. In this way, the relationship between the airflow velocity, the tire height and the direction of motion of the tire 1 during one rotation at a fixed speed can be obtained, such as figure 1shown. According to the analysis, when the vehicle keeps moving forward at a constant speed, the wind-induced vibration collection device 2 installed on the surface of the tire 1 will be subjected to periodic wind speed. Since the wind force and wind speed are positively correlated, the wind force received by the wind-induced vibration collection device 2 is also periodic. .

[0036] When the vehicle is running at a fixed speed, the wind f...

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Abstract

The invention discloses a wind-induced vibration energy collection device for the power supply of a tire pressure monitoring system. The device comprises a shell for fixing the device. The shell is fixed to the valve of a tire through a thread connection hole of the left side bottom of the shell. The left side of a baffle plate in the shell is provided with an energy storage circuit and a tire pressure monitoring system inner circuit. The right side of the baffle plate is provided with a fixed support base and a vibration beam. The surface of the vibration beam is provided with a piezoelectric film which supplies power to the tire pressure monitoring system inner circuit through the energy storage circuit. The front side wall surface and the back side wall surface of the shell are provided with rectangular through holes. The horizontal center lines of the through holes of two sides and a vibration beam are on a same horizontal plane. Cylindrical vortex induced vibration induction structures are arranged along the length direction of the vibration beam side by side. The wind-induced vibration energy collection device has the advantages of a simple structure, convenience in use, low cost, high generation power, small space occupation, safety and environmental protection, and the large prolongation of the service life of the tire pressure monitoring system.

Description

technical field [0001] The invention relates to a wind-induced vibration energy collection device for power supply of a tire pressure monitoring system, belonging to the technical field of renewable energy. Background technique [0002] The advantages of wind energy as an energy source are its sustainability, renewable nature, ubiquity and non-polluting nature. Wind energy is powerful and covers a wide range. The total global wind energy is about 2.74×10 9 MW, of which approximately 2×10 7 MW, about ten times the total available water energy. At the same time, wind energy is a clean energy source, which is environmentally friendly and non-polluting. [0003] The tire pressure monitoring system (TPMS) is an active type that detects the tire pressure and temperature inside the vehicle in real time when it is in the driving state, and gives early warning for insufficient or excessive tire pressure, so as to ensure the driving safety of the vehicle. Safety and security early...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18
CPCH02N2/186
Inventor 陈仁文周秦邦曹旸夏桦康徐旺刘川
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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