TIDA-00484
Humidity & Temp Sensor Node for Sub-1GHz Star Networks Enabling 10+ Year Coin Cell Battery Life
TIDA-00484
Overview
This reference design uses our nano-power system timer, boost converter, SimpleLink™ ultra-low power Sub-1 GHz wireless microcontroller (MCU) platform and humidity sensing technologies to demonstrate an ultra-low power method to duty-cycle sensor end nodes leading to extremely long battery life. This design includes techniques for system design, detailed test results and information to get the design up and running quickly.
Features
- Use of nano-power system timer to duty cycle the system results in 10+ year battery life from CR2032 coin cell
- Configurable system wake-up interval
- Extremely low off-state current (270 nA for 59.97 seconds)
- Ultra-low on-state current due to low active processor and radio transmit currents (3.376 mA for 30 ms)
- ±2% relative humidity accuracy
- ±0.2°C temperature accuracy
Automotive
Industrial
- Air quality sensor
- Basic thermostat
- Battery powered motion detector
- Battery powered video doorbell
- Electronic shelf label
- Fault indicator (FI)
- Fixed wired IP camera
- Line powered motion detector
- Line powered video doorbell
- Loop smoke & heat detector (commercial)
- MRI subsystem module
- Off-highway vehicles sensor systems
- PTZ wired IP camera
- Power source/load switching
- Pulse oximeter
- Rail sensing & monitoring systems
- Residential smoke & heat detector
- Sensor modules/tags for asset tracking
- Smart thermostat
- Spectrum analyzer
- Temperature & humidity sensor
- Vector signal transceiver (VST)
- Water leak detector
- Wireless communications test
- Wireless security camera
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
Start development
Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Humidity and Temperature Sensor Node for Sub-1GHz Star Networks Design Guide (Rev. E) | Sep. 20, 2018 | |
| Technical article | Collecting environmental data with less energy and wiring | PDF | HTML | May 23, 2017 | |
| Technical article | Why use Sub-1 GHz in your IoT application | PDF | HTML | Jul. 27, 2016 | |
| Technical article | Trends in building automation: connected sensors for energy efficiency | PDF | HTML | Feb. 17, 2016 | |
| Technical article | How to use boost converters in wireless sensor nodes | PDF | HTML | Oct. 06, 2015 | |
| Technical article | How to bring the IoT to older buildings with automation technology | PDF | HTML | Aug. 13, 2015 |
Related design resources
Reference designs
REFERENCE DESIGN
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