Water Meter Reference Design for Optical Sensors, Using Extended Scan Interface (ESI)
TIDM-OPTICALWATERMTR
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical Documents

Support & Training

Order Now


See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document

Description

One of the challenges in battery operated water meters is to continuously measure the water flow information while consuming as little energy as possible. The EVM430-FR6989 used in this design features a MSP430 FRAM-based microcontroller with 100uA/MHz active-mode current, 450nA standby-mode current with the real-time clock enabled, and integrated low-power analog and digital peripherals. Additionally, the MCU offers for near infinite write endurance, quick/low-power writes, and data flexibility. This reference design demonstrates a usage example of the integrated Extended Scan Interface (ESI) on the microcontroller to achieve ultra-low power consumption compared with the same detecting methodology using an external circuit. In water meter designs, coupled to an optical rotation detection sensor (provided), the ESI is continuously detecting the rotation of the propeller while the rest of the microcontroller is in a low-power mode. By using the ESI integrated in the MSP430 MCU, this design automates the measurement process and reduces CPU involvement, which helps to reduce overall power consumption.

Features
  • Supports optical sensor for detecting rotation movement including rotating direction
  • Ultra-low power consumption compared with external hardware solution
  • GUI for setting up and calibrating the ESI
  • Easy to install daughter sensor board for MSP430FR6989 target board
  • Motor control board with variable speed to simulate flow using metal plate
  • RF socket available to enable Low Power RF extension (Sub 1GHz or 2.4GHz ZigBee)"

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide


TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
MSP430F5528  25 MHz MCU with Integrated USB Phy, 128KB Flash, 8KB RAM, 12Bit/10 Channel ADC, 32BIT HW Multiplier  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR6989  MSP430FR6989 16 MHz ULP Microcontroller - 128 KB FRAM, 2KB SRAM, 83 IO, ADC12, LCD, AES, Scan IF  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TPD2E001  Low-Capacitance 2-Channel +/-15kV ESD Protection Array for High-Speed Data Interfaces  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TUSB2046B  4-port USB 2.0 12-Mbps USB full-speed hub  USB  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
MSP430F5528 Download Download
Download -
Download -
MSP430FR6989 Download Download
Download -
TPD2E001 Download -
Download Download
Download -
Download Download
TUSB2046B Download Download
Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 935 18 Aug 2014
Design files (5)
Title Type Size (KB) Date
PDF 36 25 Aug 2014
PDF 54 25 Aug 2014
ZIP 69 25 Aug 2014
PDF 51 25 Aug 2014
ZIP 23 25 Aug 2014
Related Tools & Software

Software (1)


Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles