Pressure detection device and method based on piezoresistive and piezoelectric flexible sensor combination

Abstract

The invention relates to a pressure detection device and method based on a piezoresistive and piezoelectric flexible sensor combination. A piezoresistive sensor set is used for detecting the pressure distribution condition, the pressure distribution condition is transformed to digital signals through a data collecting and processing module, sent to a pressure calculation module through a wireless communication module, and carried out real-time display in a display module. Piezoelectric signals are used for judging whether is in a pressure changing state or not to switch the sleepy and activated states of a single chip computer; in the long time sleep state, a zero point of the piezoresistive sensor is corrected; in the activated state, pressure sensing signal frequency dynamic tracking is carried out, and when the pressure sensing signal frequency is in a high frequency response, piezoriesistive sensor signals can be modified through piezoelectric signals to improve the high frequency performance of the piezoriesistive sensor signals. The pressure detection device and method based on the piezoresistive and piezoelectric flexible sensor combination has the advantages of being low in power dissipation, strong in durability, good in dynamic performance, and capable of being applied to fields of wearable plantar pressure detection, artificial limb pressure detection and robot electronic skin.

Description

technical field [0001] The invention relates to the field of pressure detection, more specifically, to a pressure detection device and method based on piezoresistive piezoelectric flexible sensor composite. Background technique [0002] The pressure acquisition system has broad application potential in robot haptics, force-measuring insoles, force-measuring cushions, etc. The development of flexible sensing materials has accelerated the development of pressure acquisition technology in the wearable field. Current pressure sensing detection systems can be classified into capacitive, piezoresistive, and piezoelectric types according to the types of sensors. The piezoresistive sensor has the advantages of large deformation range, simple process, and low cost. Therefore, most of the more mature flexible pressure acquisition and analysis systems currently use piezoresistive sensors. [0003] However, the current piezoresistive pressure acquisition equipment generally has the fol...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the above-mentioned defects in the prior art, provide a pressure detection device and method based on piezoresistive piezoelectric flexible sensors, and solve the problem of high power consumption and poor dynamic performance of current piezoresistive pressure acquisition equipment. The problem of poor durability

Images