Ultrasonic ranging method and device based on frequency adjustment and electronic equipment

A technology of frequency adjustment and ranging method, which is applied in the direction of measuring device, sound wave reradiation, radio wave measurement system, etc., can solve problems such as inaccurate ranging, interference, and equipment malfunction, so as to avoid mutual interference and realize The effect of collaborative work

Pending Publication Date: 2019-06-18
如皋忠广电子技术有限公司
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Problems solved by technology

For example, in a large room, multiple sweeping robots need to work simultaneously to keep the floor of the entire room clean, because for a single sweeping robot, its working efficiency is fixed, and it is difficult to clean a large area in a short time
However, existing ultrasonic distance...

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  • Ultrasonic ranging method and device based on frequency adjustment and electronic equipment
  • Ultrasonic ranging method and device based on frequency adjustment and electronic equipment
  • Ultrasonic ranging method and device based on frequency adjustment and electronic equipment

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] Ultrasound is a wave with a frequency greater than 20 kHz. Commonly used ultrasonic generators can be divided into two categories: one is to generate ultrasonic waves by electrical means, and the other is to generate ultrasonic waves by mechanical means. Electrical methods include piezoelectric, magnetostrictive, and electric types; mechanical methods include garrison flutes,...

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Abstract

The invention provides an ultrasonic ranging method and device based on frequency adjustment and electronic equipment and relates to the technical field of ultrasonic ranging. The ultrasonic ranging method is characterized by, according to a preset transmitting time interval, randomly selecting any frequency in a preset frequency table as a transmitting frequency and transmitting ultrasonic signals in preset number of periods; receiving return wave signals and recording propagation time from transmitting the ultrasonic signals to receiving the return wave signals; calculating a frequency component, having the largest amplitude in the frequency domain, of the return wave signals; and when the frequency component is equal to the transmitting frequency in two consecutive transmitting, calculating the distance between ultrasonic ranging equipment and an obstacle according to the propagation time of the last transmitting. The ultrasonic ranging method and device based on frequency adjustment and the electronic equipment can autonomously adjust the work frequency of ultrasonic ranging, thereby improving ultrasonic ranging accuracy and anti-interference performance, effectively avoiding mutual interference of multiple ultrasonic ranging devices during working, and realizing cooperative work of the multiple ultrasonic ranging devices.

Description

technical field [0001] The invention relates to the technical field of ultrasonic ranging, in particular to an ultrasonic ranging method, device and electronic equipment based on frequency adjustment. Background technique [0002] Ultrasonic waves have the characteristics of strong directivity, slow energy consumption, and long distances in the medium, so ultrasonic waves are often used for distance measurement. In the field of mobile robots, in order to enable the robot to automatically avoid obstacles and walk, it is often necessary to equip a ranging system so that it can obtain the distance information from obstacles in time. Therefore, ultrasonic ranging is widely used in mobile robots. [0003] With the rapid development of mobile robots, it has become an urgent need for robot development that multiple mobile robots can work simultaneously in the same space. For example, in a large room, multiple sweeping robots need to work at the same time to keep the floor of the...

Claims

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Application Information

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IPC IPC(8): G01S15/34G01S7/539
Inventor 邢月秀陈开志唐晓明
Owner 如皋忠广电子技术有限公司
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