A human breathing energy harvesting device
A technology of energy harvesting and human body, applied in electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve problems such as low conversion efficiency and low output voltage, and achieve good flow rate , the effect of controlling flow rate
Active Publication Date: 2016-03-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
As mentioned earlier, these methods can only produce low output voltage and the conversion efficiency is low
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[0018] Such as Figure 1 to Figure 4 As shown, the human respiratory energy harvesting device of the present invention is composed of a respiratory airflow dynamic assembly, a piezoelectric harmonica cavity assembly, and an airflow control valve 7. The respiratory airflow dynamic assembly includes a mask 1, an interface 2 and a through pipe 3, wherein The interface 2 remains stationary relative to the ground, the mask 1 is fixedly installed on the mouth and nose of the human body, the larger end of the interface 2 outlet is fixed and sealed on the mask 1, and the smaller end of the interface 2 outlet forms a tight connection with the end of the through pipe 3; The harmonica cavity assembly is composed of a vibrator fixing tube 4, a piezoelectric ceramic 5 and a reed 6, wherein the piezoelectric ceramic 5 is pasted on one side of the reed 6 through a conductive adhesive to form a piezoelectric vibrator, and one end of the piezoelectric vibrator is fixed to the vibrator fixing tu...
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The invention discloses a human breath energy collecting device. The human breath energy collecting device comprises a breath airflow power assembly and a piezoelectric harmonica cavity assembly, wherein the breath airflow power assembly comprises a gauze mask, a connector and a communication pipe, the connector is arranged on the gauze mask and located below the nose of a human, and the connector is connected with the piezoelectric harmonica cavity assembly through the communication pipe; the piezoelectric harmonica cavity assembly comprises a vibrator fixing tube and a piezoelectric vibrator, the tail end of the vibrator fixing tube is a breath airflow inlet and outlet, an opening is formed in the middle section of the vibrator fixing tube, the piezoelectric vibrator is arranged on the opening in the axial direction, one end of the piezoelectric vibrator is fixed to the vibrator fixing tube, and the other end of the piezoelectric vibrator is suspended to form a cantilever beam structure. Through the human breath energy collecting device, the resonant frequency of reeds can be determined according to the breathing frequency; through the arrangement of the cantilever beam structure of the piezoelectric vibrator, it can be well guaranteed that piezoelectric ceramics can vibrate under the resonant frequency and the strongest deformation can be generated, and consequently the largest piezoelectric energy can be stimulated.
Description
technical field [0001] The invention relates to a small power generation device, in particular to a device which collects human body energy and converts it into electric energy. Background technique [0002] Harvesting energy from the human body has a long history, but because so little energy can be harvested, it cannot be used effectively. In recent years, the advent of low-power electronic devices has made it possible for the human body to generate energy for use in these devices. The human body generates energy in various forms, such as arm swing, walking, knee movement, body temperature and other behavioral or physiological energy. [0003] Breathing is another body energy that can be used for energy recovery. Through the exhalation and inhalation of the human body, the air completes the process of inflow and outflow. The flow of air can generate a certain pressure value, the maximum value reaches 2% of the air pressure, which is equivalent to 1W of energy. The main...
Claims
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IPC IPC(8): H02N2/18
Inventor 杨颖沈钦龙金家楣
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS