Short-distance ultrasonic wave distance measuring system based on single chip microcomputer

An ultrasonic and single-chip microcomputer technology, applied in the field of ultrasonic short-distance measurement systems, can solve the problems of less than 1cm measurement accuracy, no integrated module temperature compensation and processing solutions, and less application of alarm circuits, etc., to achieve small errors, easy to read, and convenient to use Effect

Inactive Publication Date: 2013-12-18
TIANJIN UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

Most of the existing ultrasonic ranging solutions have blind spots above 3cm, and the measurement accuracy is less than 1cm, and most of them are based on the separated temperature sensor DS18B20, and there is no temperature compensation and processing solution based on integrated modules.
Traditional schemes seldom use alarm circuits to prompt users to exceed the range or issue warnings within a certain distance

Method used

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  • Short-distance ultrasonic wave distance measuring system based on single chip microcomputer
  • Short-distance ultrasonic wave distance measuring system based on single chip microcomputer

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Embodiment 1

[0025] Such as figure 1 As shown, the ultrasonic ranging system based on the C8051F340 single-chip microcomputer provided by the present invention has the characteristics of convenient use, high measurement accuracy, good safety, and strong energy saving. Ultrasonic sensor module US-100, 4-digit display common anode digital tube, buzzer and corresponding external circuit.

[0026] Among them, the single-chip microcomputer is used as the main control chip to coordinate the work of each module, receive the ultrasonic echo signal and use the time difference to calculate the distance. At the same time, the single-chip microcomputer displays the measurement results on the digital tube. The buzzer automatically alarms to prompt the user. Ultrasonic sensor module US-100 generates 40Khz sound waves under the control of single-chip level pulses, and automatically detects, amplifies and performs temperature compensation after receiving echoes.

[0027] The components and connections ...

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Abstract

The invention discloses a short-distance ultrasonic wave distance measuring system based on a single chip microcomputer. The short-distance ultrasonic wave distance measuring system mainly comprises an ultrasonic wave sensing module US-100 with the temperature compensating function, the single chip microcomputer C8051F340, a digital display tube and a buzzer. According to the short-distance ultrasonic wave distance measuring system, the distance can be automatically measured in a real-time mode, the short-distance ultrasonic wave distance measuring system is particularly suitable for an automobile reversing radar, and therefore accidents which possibly occur in automobile reversing are avoided. Specifications of electronic devices included in the short-distance ultrasonic wave distance measuring system based on the single chip microcomputer are all of a universal type, and therefore the short-distance ultrasonic wave distance measuring system based on the single chip microcomputer has the advantages of being easy in purchase, simple in process, low in production cost and the like. Within the range of 4.5m, the measuring precision is improved to 0.3cm, and the short-distance ultrasonic wave distance measuring system has the good effect in various distance measuring applications.

Description

Technical field [0001] The present invention is the field of voice and electricity measurement technology, which involves a short -range measurement system based on a single -chip microcomputer. Background technique [0002] In the past two decades, various ranging schemes have emerged endlessly, and laser ranging, microwave radar ranging, infrared, CCD three -dimensional visual ranging and ultrasonic ranging methods have been generated.Among them, because the laser has good linearity, the accuracy of ranging is the highest, but it is vulnerable to environmental impact, high cost, and inconvenience.Microwave radar technology also has the same cost, so it is only popularized in the military field.Of course, infrared ranging is low in price, convenient, safe, but low accuracy and poor direction is its fatal disadvantage.Although the CCD three -dimensional vision system is high, it can detect the sloping object in front.The disadvantage is that the weather is affected by the weather...

Claims

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Application Information

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IPC IPC(8): G01S15/08
Inventor 周成华江宁于杰
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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