super_star

The humidity and temperature sensor nodes of the star network achieve a service life of button batteries of more than 10 years

TIDA-00374

Overview

This TI design uses Texas Instruments' nanopower system timers, SimpleLink™ ultra-low power wireless microcontroller (MCU) platform, and humidity sensing technology to demonstrate an ultra-low power approach to driving a sensor end node. These technologies enable extremely long battery life: more than 10 years on a standard CR2032 lithium-ion coin cell battery. This TI Design includes system design techniques, detailed test results, and information to get your design started and up to speed.

characteristic

● Uses an ultra-low power system timer to drive the system, thus achieving 10+ years of battery life with a CR2032 coin cell battery
● Configurable system wake-up interval
● Extremely low off-state current (183nA for 59.97 seconds)
● Ultra-low on-state current (4.04mA for 30ms) due to low processor operating current and radio emission current
● ±3% relative humidity accuracy
● Temperature accuracy of ±0.2°C

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Blockdiagram

Design Files

Documentation

Humidity and Temperature Sensor Node for Star Networks Design Guide (Rev. D)

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-23 10:42:52

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