A pressure detection system, module and method

Abstract

A pressure detection system (1) comprises a switch switching module (11), a sampling module (12), an analog-to-digital conversion module (13) and a digital control and processing module (14). The switch switching module (11) collects a pressure signal of each pressure detection channel through an analog switch. The sampling module (12) samples the collected pressure signal and converts the sampled signal into a digital signal through the digital-analog conversion module (13) and sends the same to the digital control and processing module (14). The digital control and processing module (14) calculates the data into a pressure value, receives a touch position transmitted by a touch screen control system (3), and causes the sampling module (12) to sample at least one pressure detection channel associated with the touch position. Also disclosed is a pressure detection module and a pressure detection method, which improves signal-to-noise ratio of the pressure detection, reduces power consumption, and increases refresh rate.

Description

technical field [0001] The present application relates to the technical field of pressure detection, in particular to a pressure detection system, module and method. Background technique [0002] see figure 1 , the pressure detection chip is composed of a pressure detection system 1 and a pressure detection sensor 2. The pressure detection sensor 2 has N pressure detection channels, where N is a natural number (C0, C1, ..., CN). Each pressure detection channel is responsible for a certain small area in the entire pressure detection plane. The pressure detection system 1 includes a switch switching module 11, a sampling module 12, an analog-to-digital conversion module 13, and a digital control and processing module 14. The switch switching module 11 collects pressure signals of each pressure detection channel through an analog switch, and the sampling module 12 The collected pressure signal is sampled, the sampled signal is converted into a digital signal by the digital-to...

AI Technical Summary

Problems solved by technology

It can be seen that in order to improve the signal-to-noise ratio of pressure detection, the sampling time of each pressure detection channel is increased, resulting in a double increase in the total sampling time, which will inevitably increase power consumption and reduce refresh rate to a large extent

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