Array pressure sensing device and pressure identification method thereof

Abstract

The invention provides an array pressure sensing device, which is suitable for multi-point touch sensing and pressure quantization identification. The array pressure sensing device comprises a plurality of first axes, a plurality of second axes, a plurality of piezoresistive units, a third axis, a plurality of standard resistors and a control unit, wherein the second axes are in staggered arrangement with the first axes, and one piezoresistive unit is arranged between staggered positions of each first axis and each second axis; and the third axis is in staggered arrangement with the first axes, and one standard resistor is arranged between staggered positions of each first axis and the third axis. The invention also provides a pressure identification method realized by the array pressure sensing device. The pressure identification method is realized by a scanning driving flow of the control unit, and a pressure quantization gray scale identification method for a linear piezoresistive system is provided.

Description

technical field [0001] The present invention relates to a pressure sensing device and a pressure identification method, and in particular to an array pressure sensing device and a pressure identification method. Background technique [0002] With the development of science and technology, pressure sensing devices have been gradually developed and applied to public life. For example, Tekscan has applied gray-scale pressure sensing to home care identification and pressure distribution sensing of chair cushions. Research on tactile quantification technology for intelligent artificial bionic electronic skin has been gradually proposed, and resistive touch panel technology has gradually been commercialized. The application in consumer electronics mainly takes the multi-touch (Multi Touch) function launched by Apple and the pressure-sensing function of Wii Fit launched by Nintendo as international technical indicators. Therefore, large-area multi-touch, array, and three-dimension...

AI Technical Summary

Problems solved by technology

However, the aforementioned method can only locate the position of the pressure point on the sensing device, and it is still unable to accurately express the pressure value of the resistive touch panel through high grayscale numbers.

In order to further obtain the pressure value distribution corresponding to precision and low error, the resolution of the analog-to-digital converter of the microcontroller needs to be increased, and at the same time, the back-end coding operation will be more complicated and difficult, so that the resistive touch sensing device cannot be extended to Large-area, multi-line scanning drive and high grayscale pressure recognition cannot effectively improve the high sensitivity of resistive touch devices

Images