CAP-SENSOR-REF

该参考设计使用瑞萨电子电容式触摸按键解决方案，通过单通道自电容电极和单通道屏蔽电极测量水位。 电极和储液罐需要用导体进行 GND 屏蔽，但线性值可用一个自电容电极通道测量。

Problems with conventional water level measurement technology (float type, weight sensor) are solved with Renesas' Capacitive Sensor Application Reference Design. When considering water level detection via float, many physical components are susceptible to damage due to fatigue and deterioration of parts, due to high costs. Additionally, when considering water level detection via a weight sensor, high costs can be incurred due to sensor elements and peripheral circuits.

With Renesas' water level measurement, parts are virtually free from fatigue and wear and tear; they are very hard to break. For systems that use a microcontroller, replacing the microcontroller and adding electrodes is all that is needed, and the cost to do this is low. Finally, touch key and water level measurement can be achieved simultaneously.