Multi-stage capacitive sensor

• Main Authors: MOREY ALAN ROGER, COWCHER ALEX JAMES
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2019
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; PULSE TECHNIQUE; TARIFF METERING APPARATUS; TESTING

A multi-stage capacitive sensor is provided having a layered structure, including a user-contact surface, a first capacitive sensor for the user-contact surface, a second capacitive sensor which is spaced apart from the first capacitive sensor in a direction away from the user-contact surface, and a conductive member. The conductive member is positioned between the first and second capacitive sensors, and is engaged with the first circuit substrate and spaced apart from the second capacitive sensor. In a preferred embodiment, under the application of a force at the user-contact surface, the conductive member is deflected relative to the second capacitive sensor to alter a distance therebetween to create a detectable change in a capacitance at the second capacitive sensor. 一种多层结构的多级电容式传感器，包括用户接触界面、第一电容式传感器、与所述第一电容式传感器在远离所述用户接触界面方向间隔设置的第二电容式传感器及导电构件。所述导电构件设置在所述第一、第二电容式传感器之间。在用户接触表面处施加力的情况下，导电构件和第二电容传感器相对运动，使得它们之间的距离被改变以在第二电容传感器处产生可检测的电容变化。