TIDA-010050
Ultra-low power water flow measurement for AMR reference design
TIDA-010050
Overview
This fully tested reference design demonstrates a low-power solution for electronic measurement of water flow through a mechanical meter and provides a single-chip platform for flow measurement and wireless communications. The design is ideal for water meter automatic meter reading (AMR) modules that add wireless communications to existing mechanical meters. The RF subsystem supports standard protocols such as wireless M-Bus or proprietary protocols in the Sub-1 GHz ISM bands. This reference design offers the ability to accurately read the mechanical rotation from longer distances, and provides greater reliability. The ultra-low power consumption reduces the battery requirement and extends product lifetime.
Features
- Single-chip integrated solution with flow meter metrology and RF communications subsystem
- Meets measurement accuracy requirements of ISO4064-1:2014-11 (Class 1)
- Consumes 1.83 µA while sampling at 16 Hz with 3.3-V power supply
- Accurate measurement at up to 5.8 mm from rotating disc
- Complete tested reference design with firmware, design files and test report
Industrial
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.
TIDUEO3.PDF (5164 K)
Reference design overview and verified performance test data
TIDRZI1.PDF (743 K)
Detailed schematic diagram for design layout and components
TIDRZI2.PDF (204 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRZI3.PDF (114 K)
Detailed overview of design layout for component placement
TIDRZI5.ZIP (520 K)
Files used for 3D models or 2D drawings of IC components
TIDCFF1.ZIP (533 K)
Design file that contains information on physical board layer of design PCB
TIDRZI4.PDF (496 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
P-channel MOSFETs
CSD23285F5 — -12-V, P channel NexFET™ power MOSFET, single LGA 0.8 mm x 1.5 mm, 35 mOhm, gate ESD protection
Data sheet: PDF | HTMLVoltage translating gates
SN74AUP1T00 — Low Power, 1.8/2.5/3.3-V In, 3.3-V CMOS Out, Single 2-Input Positive-NAND Gate
Data sheet: PDFStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Ultra-Low Power Water Flow Measurement for AMR Reference Design | Apr. 12, 2019 |
Related design resources
Hardware development
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Software development
SOFTWARE DEVELOPMENT KIT (SDK)
IDE, CONFIGURATION, COMPILER OR DEBUGGER
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