Continuous modulation ultrasonic ranging method, device and system

A distance measuring method and a technology of a distance measuring device, which are applied in the field of devices and systems, ultrasonic distance measuring methods, and can solve problems such as insufficient measurement accuracy

Inactive Publication Date: 2019-09-10
SHANGHAI FUTURE INTELLIGENCE TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a method, device and system for continuously

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  • Continuous modulation ultrasonic ranging method, device and system
  • Continuous modulation ultrasonic ranging method, device and system
  • Continuous modulation ultrasonic ranging method, device and system

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Embodiment Construction

[0060] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be further described below in conjunction with the accompanying drawings. Of course, the present invention is not limited to this specific embodiment, and general replacements known to those skilled in the art are also covered within the protection scope of the present invention.

[0061] Such as figure 2 Shown is a schematic flow chart of an implementation of the continuous modulation ultrasonic ranging method. It can be seen from the figure that the ultrasonic ranging method includes:

[0062] S10 forms a first sine wave signal, and uses the first sine wave signal to excite and vibrate the transmitting ultrasonic transducer;

[0063] S20 performing amplitude modulation on the first sine wave signal by using the second sine wave signal at a specific moment, and using this moment as a start time point of distance measurement timing;

[006...

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Abstract

The invention discloses a continuous modulation ultrasonic ranging method, device and system. The continuous modulation ultrasonic ranging method comprises the following steps: forming a first sine wave signal, and using the first sine wave signal to excite an ultrasonic transducer to be vibrated; using a second sine wave signal at a specific moment to carry out amplitude modulation on the first sine wave signal, and using the moment as a start moment point for ranging timing; receiving an echoed signal emitted by a detected target through receiving the ultrasonic transducer; carrying out amplitude modulation on the echoed signal to acquire the second sine wave signal, and determining an arrival moment point of the echoed signal according to the modulated second sine wave signal; and calculating a distance between an ultrasonic signal and the detected target according to the start moment point and the arrival moment point so as to completely perform ranging. Relative to a conventionalamplitude identification way, the measuring method has the advantages that the receiving/sending time point of the ultrasonic signal can be acquired, so that the distance between the ultrasonic signaland the detected target can be accurately acquired.

Description

technical field [0001] The invention relates to the technical field of engineering measurement, in particular to an ultrasonic distance measuring method, device and system. Background technique [0002] In the field of engineering construction, it is usually necessary to monitor the settlement of buildings, and the essence of settlement monitoring is to monitor the subsidence displacement of buildings. At present, there are many methods to realize accurate monitoring of displacement, such as using LVDT (Linear Variable Differential Transformer, Linear Variable Differential Transformer) sensor to realize high-precision displacement monitoring. However, the cost of the monitoring system composed of LVDT is relatively high. Especially in the case of large-scale settlement monitoring, the cost will rise sharply. Compared with most existing horizontal settlement monitoring methods, the use of ultrasonic ranging principle to realize displacement monitoring has the advantages of no...

Claims

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Application Information

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IPC IPC(8): G01S15/08G01S7/527G01S7/539
CPCG01S7/527G01S7/539G01S15/08
Inventor 焦迪李建国应继伟汪邦运
Owner SHANGHAI FUTURE INTELLIGENCE TECH CO LTD
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