TI introduces the most accurate single-chip ultrasonic sensing microcontrollers
Texas Instruments (TI) unveiled a new family of MSP430 microcontrollers (MCUs) with an integrated ultrasonic sensing analog front end that enables smart water meters to deliver higher accuracy and lower power consumption. In addition, TI introduced two new reference designs that make it easier to design modules for adding automated meter reading (AMR) capabilities to existing mechanical water meters.
The new MCUs and reference designs support the growing demand for more accurate water meters and remote meter reading to enable efficient water resource management, accurate measurement and timely billing.
More intelligence and precision to sense flow
As part of the ultra-low-power MSP430 MCU portfolio for sensing and measurement, the new MSP430FR6047 MCU family lets developers add more intelligence to flow meters by taking advantage of a complete waveform capture feature and analog-to-digital converter (ADC)-based signal processing. This technique enables more accurate measurement than competitive devices, with precision of 25 picoseconds or better, even at flow rates less than 1 liter per hour. In addition, the integrated MSP430FR6047 devices reduce water meter system component count by 50 % and power consumption by 25%, enabling a meter to operate without having to battery the change for 10 or more years. The new MCUs also integrate a low-energy accelerator module for advanced signal processing, 256 KB of ferroelectric random access memory (FRAM), a liquid crystal display (LCD) driver and a metering test interface.
The MSP430 Ultrasonic Sensing Design Centre offers a comprehensive development ecosystem that allows developers to get to market in months. The design centre provides tools for quick development and flexibility for customisation, including software libraries, a graphical user interface (GUI), evaluation modules with metrology and digital signal processing (DSP) libraries.