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Capacitive sensing is the core of multi touch system

Jiande Antai power capacitor Co., Ltd. is a professional capacitor r & D, design, production and sales manufacturers. The main products of the company are capacitor for induction equipment, induction heating capacitor, induction melting capacitor and so on

Multi-touch sensing is an extension of capacitive sensing, which makes touch technology more intuitive, allowing simultaneous detection of multiple fingers and gesture recognition. This paper introduces the basic principle of capacitive induction and the improvement of capacitive induction technology in automobile application. This paper introduces the structure and internal operation of multi-touch screen/trackpad, and discusses the changes of multi-touch sensing technology in man-machine interface.

At the heart of a multi-touch system is a pair of adjacent electrodes. When the conductor is near the electrode, the capacitance between the two electrodes increases and can be detected by the microcontroller. In addition, capacitive sensing can also be used for close sensing, where the sensor and the user do not need to touch the body. This can be done by increasing the sensitivity of the sensor.

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