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Measurement of ultrasonic displacement using complex programmable logic device

Hongping Zhang

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Abstract

Based on ultrasound and using a complex programmable logic device(CPLD),precision measurement of displacement is studied.In this system the time information is captured by a CPLD and transmitted to an MCU for processing.Precision is determined by the frequency of CPLD.Therefore,precision measurement is achieved with a theoretical accuracy of 1ms.The system is low priced and can be used for continuous measurements.The drawback that the accuracy is limited by operating frequency in the conventional MCU based instruments is overcome.

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What this paper is about

Based on ultrasound and using a complex programmable logic device(CPLD),precision measurement of displacement is studied.In this system the time information is captured by a CPLD and transmitted to an MCU for processing.Precision is determined by the frequency of CPLD.Therefore,precision measurement is achieved with a theoretical accuracy of 1ms.The system is low priced and can be used for continuous measurements.The drawback that the accuracy is limited by operating frequency in the conventional MCU based instruments is overcome.

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Available abstract

Based on ultrasound and using a complex programmable logic device(CPLD),precision measurement of displacement is studied.In this system the time information is captured by a CPLD and transmitted to an MCU for processing.Precision is determined by the frequency of CPLD.Therefore,precision measurement is achieved with a theoretical accuracy of 1ms.The system is low priced and can be used for continuous measurements.The drawback that the accuracy is limited by operating frequency in the conventional MCU based instruments is overcome.

Key concepts: Complex programmable logic device, Microcontroller, Computer science, Displacement (psychology), Ultrasonic sensor, System of measurement, Programmable logic device, Computer hardware

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