Remote ultrasonic ranging system based on open source hardware and virtual instrument

Abstract

The invention provides a remote ultrasonic ranging system based on open source hardware and virtual instrument. The system comprises a lower computer system and an upper computer system which are in wireless communication connection, wherein the lower computer system comprises a power module, a microcontroller module, a temperature sensor module, an ultrasonic sensor module and a wireless serial port module. The remote ultrasonic ranging system based on the open source hardware and the virtual instrument has the advantages that the open source hardware Arduino UNO with extremely high cost performance is adopted as lower computer acquisition equipment of the virtual instrument LabVIEW, and the whole system has the advantages that the structure is simple, the cost is low, and the maintenanceis easy; the hardware overhead and hardware electromagnetic interference are reduced, and the measurement accuracy of the system is effectively improved; remote transmission and processing of measured data are reliably achieved; a human-machine interface of the upper computer system is friendly, ambient temperature and measured distance values are displayed through two ways of dial pointer type display and digital text display, the layout is reasonable, and the values are clear and easy to read.

Description

technical field [0001] The invention relates to the technical field of ultrasonic ranging, in particular to a remote ultrasonic ranging system based on open source hardware and virtual instruments. Background technique [0002] Ultrasound is a sound wave with a frequency greater than 20KHz. The sound energy is concentrated and the directionality of propagation is good. It can be used for welding, speed measurement, and distance measurement. It is widely used in medical treatment, military industry, industry and agriculture. Due to the good directivity of ultrasonic waves, the energy consumption in the medium is relatively slow, so ultrasonic waves are often used to measure distances; [0003] The traditional ultrasonic ranging system only reads the data manually locally. Errors are likely to occur during manual data measurement and affect the measurement accuracy. In addition, the measured data cannot be transmitted long-distance and real-time during local stand-alone measur...

AI Technical Summary

Problems solved by technology

[0003] The traditional ultrasonic ranging system only reads the data manually locally. Errors are likely to occur during manual data measurement and affect the measurement accuracy. In addition, the measured data cannot be transmitted long-distance and real-time during local stand-alone measurement, so it is impossible to achieve remote and real-time monitor;

[0004] Considering the influence of temperature on the transmission speed of ultrasonic waves, most of the ultrasonic ranging systems in the prior art use hardware circuits to actively compensate the temperature. Although this overcomes the influence of temperature on the transmission speed, it increases The overall overhead, and the hardware temperature compensation circuit is inconvenient to replace components during maintenance and later upgrades;

[0005] In the existing technology, the acquisition terminal of the traditional LabVIEW virtual instrument measurement system is mostly the acquisition card of NI Company, and its price is very expensive. This also restricts the popularization and application of virtual instruments in small measurement systems to a certain extent.

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