CN113227954A - 压力感应装置、压力感应方法及电子终端 - Google Patents

压力感应装置、压力感应方法及电子终端 Download PDF

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Publication number
CN113227954A
CN113227954A CN201880100307.5A CN201880100307A CN113227954A CN 113227954 A CN113227954 A CN 113227954A CN 201880100307 A CN201880100307 A CN 201880100307A CN 113227954 A CN113227954 A CN 113227954A
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China
Prior art keywords
pressure
pressure sensing
sensor
sensing device
circuit
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CN201880100307.5A
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English (en)
Inventor
李灏
林学朋
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Shenzhen New Degree Technology Co Ltd
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Shenzhen New Degree Technology Co Ltd
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Publication of CN113227954A publication Critical patent/CN113227954A/zh
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
    • G01L1/2293—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges of the semi-conductor type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/225—Measuring circuits therefor
    • G01L1/2262—Measuring circuits therefor involving simple electrical bridges
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Pressure Sensors (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

压力感应装置(100)包括基材(10)及压力传感器(20)，所使用的压力传感器(20)为具有一定面积的薄膜压阻传感器(21)，并在薄膜压阻传感器(21)的端部分别引出电源线VCC、地线GND与两条差分线Vm+、Vm‑，压力传感器(20)设于基材(10)。该压力传感器(20)具有面积小，初始压差小，灵敏度高，温漂小，抗干扰能力强，抗跌系数高，可靠性稳定等优点。将基材(10)简单相抵到承受压力的被测物件(200)上，压力传感器(20)接上压力感应检测电路，被测物件(200)受到压力产生形变，基材(10)产生形变薄膜压阻传感器(21)跟随形变，通过检测两条差分线Vm+、Vm‑之间的电压降以检测基材(10)的形变，换算得到被测物件(200)的压力，实现压感触控功能。应用该压力感应装置(100)的压力感应方法、具有该压力感应装置(100)的电子终端均能实现压感触控功能。

Description

PCT国内申请，说明书已公开。

Claims (17)

  1. PCT国内申请，权利要求书已公开。
CN201880100307.5A 2018-12-20 2018-12-20 压力感应装置、压力感应方法及电子终端 Pending CN113227954A (zh)

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PCT/CN2018/122314 WO2020124477A1 (zh) 2018-12-20 2018-12-20 压力感应装置、压力感应方法及电子终端

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US (1) US11940337B2 (zh)
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WO2020124477A1 (zh) 2020-06-25
US20220057277A1 (en) 2022-02-24

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