This reference design offers an environment friendly, versatile, and high-performance answer for contemporary ultrasonic water-metering techniques.
This reference design is tailor-made for builders and system designers aiming to create superior ultrasonic water-metering subsystems for functions equivalent to water meters, warmth meters, and circulation transmitters. By leveraging the built-in ultrasonic sensing answer (USS) module, this design affords metrology efficiency, low energy consumption, and strong integration. Goal customers embrace engineers working in sensible metering, utility administration, and circulation measurement techniques who require exact, energy-efficient, and customizable options. Constructed across the MSP430FR6047 microcontroller (MCU) the design integrates high-speed ADC-based sign acquisition and digital sign processing capabilities, enabling streamlined improvement and dependable efficiency in a wide range of real-world metering functions.
This reference design TIDM-1019 by Texas Devices facilitates the event of ultrasonic water-metering subsystems utilizing an built-in ultrasonic sensing answer (USS) module. It delivers superior metrology efficiency, low energy consumption, and excessive integration. The design is constructed across the MSP430FR6047 microcontroller (MCU), which options 256KB of reminiscence, built-in high-speed ADC-based sign acquisition, and a low-energy accelerator (LEA) to optimize digital sign processing. The answer offers best-in-class metrology efficiency, characterised by a 25-picosecond Zero Movement Drift (ZFD) and a 32-picosecond single-shot customary deviation.Â
It operates with low energy consumption, requiring solely roughly 2.5 µA when utilizing a 1 MHz transducer at one measurement per second for metrology. The design additionally permits flexibility to check totally different pipes and transducers, supporting direct interfacing with a pair of transducers. Customers can simply customise and check the subsystem with the Ultrasonic Sensing Design Heart graphical consumer interface (GUI). The design consists of an ultrasonic sensing software program library that options superior time-of-flight (ToF) algorithms and permits stand-alone demonstrations utilizing a liquid-crystal show (LCD).
This reference design is well-suited for functions equivalent to water meters, warmth meters, and circulation transmitters. It makes use of the TIDM-1019 system, which is constructed utilizing the MSP430FR6047 MCU from Texas Devices (TI) alongside discrete elements. The implementation depends on differential time-of-flight (ToF) calculations involving upstream and downstream transducers. The inner USS module of the MSP430FR6047 MCU manages transducer excitation and sign seize. These indicators are processed utilizing the MCU’s LEA to calculate the mandatory output knowledge effectively and with low energy utilization.
The MSP430FR604x household of ultrasonic sensing and measurement techniques on chips (SoCs) are extremely built-in and particularly optimized for water and warmth metering. The USS module throughout the MCU incorporates a programmable pulse generator (PPG) and a bodily interface (PHY) that includes a low-impedance output driver. This ensures optimum sensor excitation and exact impedance matching, delivering correct outcomes for ZFD. Further options of the USS module embrace a programmable achieve amplifier (PGA) and a high-speed, 12-bit, 8 megasamples per second (Msps) sigma-delta (ΣΔ) ADC for exact sign acquisition from customary ultrasonic transducers. To additional improve system integration for metering functions, the MSP430FR6047 MCU consists of extra peripherals. Notably, the metering check interface (MTIF) module generates pulses that point out the circulation measured by the meter.Â
TI has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) structure, and extra. The corporate’s web site has extra knowledge concerning the reference design. To learn extra about this reference design, click on right here.
