Product category: Microprocessors, Microcontrollers and DSPs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TMS320F2810
Edited by the Electronicstalk Editorial Team on 28 May 2004
Controller samples sensors faster
The TMS320F2810 digital signal controller is enabling Chronotek to increase sampling rates by more than one hundred times in its new ultrasonic transit time liquid flow sensor system
Providing ultrahigh accuracy and faster response in industrial metering applications, the DSP-based TMS320F2810 digital signal controller from Texas Instruments is enabling Chronotek to increase sampling rates by more than one hundred times in its Chrondyne Pulse Module ultrasonic transit time liquid flow sensor system.
This article was originally published on Electronicstalk on 28 May 2004 at 8.00am (UK)
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TI's F2810 controller enables the Pulse Module to make 300 calculations per second, where high data density is essential in difficult applications due to unstable flows or contaminants.
Flow metering technologies are coming under increasing pressure to adapt to growing environmental concerns, demands for greater accuracy, and reduced maintenance costs.
Traditional mechanical measurement techniques have proved to be inaccurate, slow and maintenance intensive.
Modern flow metering solutions have adopted ultrasonic techniques using microcontroller (MCU) based systems, but are still hampered by the lack of processing power to provide highly accurate and fast response measurements.
By leveraging DSP capabilities of the F2810 controller, Chronotek's Pulse Module is able to make 300 calculations per second compared with three to four per second from some MCU-based systems.
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The 150MHz multiply/accumulate (MAC) instruction of the F2810 controller allows the Pulse Module to send ultrasonic signals and calculate the differential time-of-flight with a resolution of a few picoseconds.
'The ultrasonic flow meter system is an excellent example of the innovation that can be achieved with the F2810 controller'.
'We were able to redesign the ultrasonic flow meter to make it faster, more precise, smaller and less costly', said David Tigwell, President, Chronotek.
'Developers in the sensor and measurement space will be able to pursue innovative products by leveraging the powerful combination of processing performance, integration, small footprint and low cost of the F28x digital signal controller'.
The high integration offered by the F2810 controller has also enabled the system to be reduced to the size of a credit card compared with current systems that take up to 40in2 of board space.
The F2810 controller-based Pulse Module is designed to bring high performance and accurate fluid measurement to a variety of OEM industrial applications, including semiconductor manufacturing, medical metering and aviation.
The F2810 controller integrates 128Kword of Flash memory for simple reprogramming during development and in-field software updates.
Optimised event managers include pulse-width modulation (PWM) generators, programmable general-purpose timers and glueless capture encoder interfaces.
The device also features a 12bit ADC capable of achieving throughput of 12.5Msample/s and dual sample-hold, providing fast response for tight control loops.
Five different on-chip standard communication ports, including CAN, provide simple communication interfaces to hosts, test equipment, displays and other components or networks.
The Pulse Module also uses TI's analogue solutions, including TPS380x power supply supervisors and OPA355 amplifier devices.
TI provides control solutions from 40 to 150MIPS designed for virtually all control applications and provides designers with application-focused hardware and software tools designed to speed time to market.
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