Pressure imaging sensor

Abstract

The invention discloses a pressure imaging sensor. Each pressure imaging pixel comprises an MEMS pressure sensor, a gating circuit, a gating signal input end and a sensing voltage output end. Each pixel set is composed of A pressure imaging pixels, the gating signal input ends of the A pressure imaging pixels of each pixel set are connected together, and the sensing voltage output ends of the A pressure imaging pixels of each pixel set are not connected with one another, and serve as the A sensing voltage output ends; the A sensing voltage output ends of each pixel set are shared by 2<M+N> pixel sets, and the 2<M+N> pixel sets are provided with 2<M+N> gating signal input ends in total; a binary system decoding circuit has (M+N) decoding input signals and 2<M+N> decoding output signals, wherein each decoding output signal is connected with the gating signal input ends of the corresponding pixel set. According to the pressure imaging sensor, the shape feature and the pressure feature of an imaged object can be effectively reserved, the amount of calculation of target extraction and the amount of calculation of mode recognition are small, real-time performance is good, reliability of mode recognition is high, concealment of an imaging device is good, and the pressure imaging sensor is widely applied.

Description

technical field [0001] The invention relates to the field of imaging technology, in particular to the field of pressure imaging, and specifically refers to a sensor that uses a MEMS pressure sensor array to form pressure imaging pixels, and obtains image information of a pressured object by collecting data from the pressure imaging sensor. Background technique [0002] With the continuous development of MEMS sensor technology, the original bulky sensors can be made very small, which is very convenient to form sensors into arrays, so as to realize the functions and technological breakthroughs that could not be realized before. At present, imaging technologies are mainly wave imaging technologies, such as visible light waves, infrared light waves, ultrasonic waves, and radar electromagnetic waves. The above-mentioned wave imaging technology has a large amount of information and reflects the information of the imaged object more comprehensively. But at the same time, due to th...

AI Technical Summary

Problems solved by technology

But at the same time, due to the large amount of information, it brings a lot of useless calculations to the automatic extraction and recognition of target extraction and pattern recognition.

In addition, due to the large amount of information, the imaged object information is relatively complete, and it is easy to violate personal privacy.

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