Ultrasonic wave pressure transducer and air pressure monitoring device
A pressure sensor and air pressure monitoring technology, which is applied in the field of air pressure monitoring devices and ultrasonic pressure sensors, can solve the problem that the frequency cannot be lower than 0.1Hz, and achieve the effect of simple and easy identification
Inactive Publication Date: 2010-08-25
拉尔夫·克林伯格
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Problems solved by technology
Using various existing sound pressure microphones as pressure sensors, the air pressure change of 0.1Pa can be measured, but its frequency cannot be lower than 0.1Hz
Therefore, the various existing barometers cannot detect the above-mentioned air pressure fluctuations well.
Method used
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[0029] The present invention will be further described below in conjunction with accompanying drawing and embodiment:
[0030] Fig. 2 is a schematic structural view of the first embodiment of the ultrasonic pressure sensor of the present invention. As shown in FIG. 2 , the ultrasonic pressure sensor is mainly composed of a tubular body 22 , an ultrasonic transmitter 21 disposed at one end of the tubular body 22 , and an ultrasonic receiver 23 disposed at the other end of the tubular body 22 . The tube body 22 can be made of plastic, metal or sponge-like material, and there is an opening 27 for introducing external air into the tube body, so as to ensure that the air pressure inside the tube body 22 is equal to the monitored external ambient air pressure. The ultrasonic wave generated from the ultrasonic transmitter 21 propagates through the air inside the tube and is received by the ultrasonic receiver 23 . The propagation of ultrasonic waves from the transmitting end to the ...
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The invention relates to an ultrasonic pressure sensor and an atmospheric pressure monitoring device using the ultrasonic pressure sensor. The ultrasonic pressure sensor comprises a pipe body provided with an air inlet, an ultrasonic transmitter arranged at one end of the pipe body and used for transmitting ultrasonic waves, an ultrasonic receiver arranged at the other end of the pipe body, and an outer shell which contains the pipe body, the ultrasonic transmitter and the ultrasonic receiver. The ultrasonic receiver receives an ultrasonic wave transmitted through air in the pipe body, and according to the received ultrasonic wave, outputs sinusoidal voltage, the amplitude of which is in proportion with the atmospheric pressure in the pipe body. The atmospheric pressure monitoring device can effectively detect barometric fluctuation with the amplitude ranging from 0.1Pa to 50Pa and the frequency ranging from 0.02Hz to 2Hz, and display in various direct-viewing manners the barometric fluctuation with negative impacts on the human body.
Description
technical field [0001] The invention relates to air pressure detection, more specifically, to an ultrasonic pressure sensor and an air pressure monitoring device using the ultrasonic pressure sensor. Background technique [0002] Atmospheric pressure is constantly changing every moment, as shown in Figure 1 is a graph of atmospheric pressure changes on a certain day. During the two minute period shown at A and B, there can be two types of changes in atmospheric pressure, either completely constant or smooth changes (A1 and B1) or fluctuations (A2 and B2). These air pressure fluctuations are usually in the range of 0.1 Pa to 50 Pa in amplitude, with a frequency of 0.02 Hz to 2 Hz. The waveform of these fluctuations may be irregular or approximate to a sine wave. [0003] Absolute air pressure will affect weather changes, but it will not have a direct negative impact on the human body. The human body can adjust itself to adapt to different absolute air pressure, as long as t...
Claims
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IPC IPC(8): G01L11/06
Inventor 拉尔夫·克林伯格
Owner 拉尔夫·克林伯格