Overview

Description

Water Level Measurement Reference Design

This reference design measures the water level with a one-channel self-capacitance electrode and a one-channel shield electrode using a Renesas capacitive touch key solution. Electrodes and liquid tanks need to be GND shielded with conductors, but the linear values can be measured with one channel of self-capacitance electrodes.

Features

  • This is based on a Renesas capacitive touch key solution with high sensitivity and high noise immunity
  • High-performance, low-power microcontroller and touch IP achieve product system control and capacitive sensor detection
  • This can also be mixed with conventional touch keys (water level measurement + touch button)

Problems with Conventional Technology (Float Type, Weight Sensor) Are Solved by the Renesas Capacitive Sensor Application Reference Design

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Capacitive-Sensor-Application-Reference-Design

Hardware Information

Reference DesignApplication NotesGerber Data
Water Level Measurement Demo SetRX130 Group Capacitive Water Level Measurement Demo Set Rev.1.00 (PDF | English, 日本語)Liquid Level Design Package (ZIP | English, 日本語)

Software Configuration

RX FirmwareContentsCode Size
RX Family Capacitive Liquid Level Indicator Demo System Sample Software - Sample Code (ZIP | English, 日本語)Sample ProgramROM: 55,621 bytes   RAM: 8,966 bytes
PC SoftwareContentsCode Size
RX Family Capacitive Water Level Measurement Demo Level Monitor V1.00.00 - Software (ZIP)
Various measurements that are detected by the target board can be monitored
Executable EXE file-

Applications

Design & Development

Sample Code

Related Boards & Kits

Boards & Kits

Lab on the Cloud

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This reference design solution shows water level measurement using a capacitive touch electrode and the capacitive touch sensor unit feature of the RX130 MCU.

Water level measurement demo
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Lab on the Cloud

Lab on the Cloud

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This reference design solution shows water level measurement using a capacitive touch electrode and the capacitive touch sensor unit feature of the RX130 MCU.