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Array piezoelectric sensor

A piezoelectric sensor and array electrode technology, applied in the field of sensing, can solve the problems of sensor miniaturization and integration difficulties, and achieve the effects of improved dynamic performance and anti-interference ability, reduced number of external leads, and smooth surface

Inactive Publication Date: 2009-01-21
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, optical fiber sensing can also be used to obtain pressure sensors with strong anti-interference ability, but it is difficult to miniaturize and integrate such sensors.

Method used

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Experimental program
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Embodiment Construction

[0016] Such as figure 1 As shown, the array piezoelectric sensor includes a circuit board 7 and a metal casing 9 fixed on the circuit board 7 . The top of the metal casing 9 is open, and its internal space is provided with a rubber encapsulation layer 1 , a piezoelectric sensitive layer, an electrode adapter plate and a charge readout integrated circuit 6 sequentially from top to bottom. The power input port and the signal output port provided on the circuit board 7 are respectively connected to the charge readout integrated circuit 6 , and the ground electrode of the charge readout integrated circuit 6 is connected to the ground electrode of the circuit board 7 .

[0017] For the structure of the rubber encapsulation layer 1, see figure 1 and figure 2 , the rubber encapsulation layer includes a rubber sheet, the outer surface of which is provided with protruding protrusions 10, the protrusions 10 are in the shape of a frusto-conical and arranged in an array.

[0018] For ...

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Abstract

A array piezoelectric transducer is prepared as setting rubber packaged layer formed by rubber plates with boss, piezoelectric sensitive layer with PVDF sheets, electrode key-set and electric charge reading-out integrated circuit in sequence from top to bottom in metal shell of said transducer.

Description

technical field [0001] The invention belongs to the field of sensor technology, in particular to a sensor for measuring contact pressure distribution. Background technique [0002] The measurement of contact pressure distribution is of great value in many application fields. The pressure distribution data of the sitting posture is extremely important for designing a suitable seat structure, such as the seat design of car drivers and astronauts; incorrect sitting and lying postures cause long-term pressure on parts of the human body to cause decubitus, sit sores and other diseases. For hemiplegic, bedridden patients, the disease can be fatal if effective decompression measures are not taken. Artificial touch plays a very important role in the sensory system of robots. It obtains environmental information through contact, whether it is finger touch or plantar touch, and its essence is the measurement of pressure distribution. Therefore, the array pressure sensor has importan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/14
Inventor 罗志增席旭刚张卫孟明
Owner HANGZHOU DIANZI UNIV