TIDM-WATERMETER-LCSENSOR

Water Meter Reference Design for LC Sensors, Using Scan Interface (Scan I/F)

TIDM-WATERMETER-LCSENSOR

Design files

Overview

In battery operated water meter, battery life time over several years is key. One of the challenges is to continuously measure the water flow information while consuming at little energy as possible. The Scan Interface (Scan I/F) sensing peripheral integrated onto the ultra-low power MSP430 microcontroller is solving this problem. In water meter designs, coupled to a LC rotation detection sensor, the Scan I/F is continuously detecting the rotation of the propeller while the rest of the microcontroller is sleeping in low-power mode. The reference design demonstrates a usage example of the Scan I/F to achieve ultra-low power consumption compared with the same detecting methodology using external circuit.

Features
  • Supports 2 LC sensor for detecting rotation movement including rotating direction
  • Ultra-low power consumption compared with external hardware solution
  • Example source code for setting up Scan I/F
  • Examples for calibration
  • Easy to install daughter sensor board for MSP-TS430PM64 target board
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDR370.PDF (121 K)

Detailed schematic diagram for design layout and components

TIDR369.ZIP (23 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC253.ZIP (102 K)

Design file that contains information on physical board layer of design PCB

Products

Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430FW427Rotary Sensing MCU with scan interface, 32KB Flash 1KB SRAM for gas and water metering applications

Data sheet: PDF
MSP430 microcontrollers

MSP430FW428Rotary Sensing MCU with scan interface, 48KB Flash 2KB SRAM for gas and water metering applications

Data sheet: PDF
MSP430 microcontrollers

MSP430FW429Rotary Sensing MCU with scan interface, 60KB Flash 2KB SRAM for gas and water metering applications

Data sheet: PDF

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Hardware

Development kit

MSP-TS430PM64 — MSP-TS430PM64 - 64-pin Target Development Board for MSP430F1x, MSP430F2x and MSP430F4x MCUs

The MSP-TS430PM64 is a standalone ZIF socket target board used to program and debug the MSP430 MCU in-system through the JTAG interface or the Spy Bi-Wire (2-wire JTAG) protocol.

Device Support: The MSP-TS430PM64 development board supports MSPF13x, MSP430F14x, MSP430F14x1, MSP430F15x, MSP430F16x, (...)

User guide: PDF | HTML
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