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Ultrasonic rangefinder and locator for short-distance obstacle avoidance system

A short-range, locator technology, used in positioning, radio wave measurement systems, instruments, etc., can solve problems such as the inability to choose an obstacle avoidance path, and achieve the effect of improving accuracy, convenient use, and precise positioning

Inactive Publication Date: 2016-08-24
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when multiple obstacles appear at the same time near the object, the controller cannot choose a correct obstacle avoidance path because there is no angle information of the specific distribution of the obstacles.

Method used

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  • Ultrasonic rangefinder and locator for short-distance obstacle avoidance system
  • Ultrasonic rangefinder and locator for short-distance obstacle avoidance system
  • Ultrasonic rangefinder and locator for short-distance obstacle avoidance system

Examples

Experimental program
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Embodiment Construction

[0020] Such as figure 1 As shown in the figure, for the ultrasonic rangefinder and locator used in the short-range obstacle avoidance system, the ultrasonic transmitter is connected to the P3.1 pin of the microcontroller controller, the output terminal of the digital temperature sensor is connected to the P3.0 pin, and the two ultrasonic receivers receive The ultrasonic wave emitted by the ultrasonic transmitter outputs a pulse signal to the pins P3.2 and P3.3, and the single-chip controller processes the pulse signal to form a two-dimensional detection system.

[0021] figure 2 It is the minimum working system of the controller, in which S1, C3, R1 form the reset circuit of the controller, and C1, C2, Y1 form the external oscillation circuit of the controller to provide the clock signal for the controller. Reset circuit and clock circuit ensure the normal operation of the controller. STC89 series single-chip microcomputer is used as the controller, 12864 LCD is used for di...

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Abstract

The invention provides an ultrasonic distance measurement and locating instrument for a short-distance evadible system. Double ultrasonic receivers are adopted, the two-dimension coordinates of the positions of all objects within a short-distance range in front of the operation plane of the system can be measured simultaneously by the system, and therefore the short-distance evadible system can rapidly select the optimal obstacle evading path.

Description

technical field [0001] The invention relates to ultrasonic positioning, in particular to an ultrasonic ranging and locating instrument for a short-distance obstacle avoidance system. Background technique [0002] Ultrasonic waves are often used in short-range obstacle avoidance systems to measure the distance between obstacles and objects. In common ultrasonic obstacle avoidance systems, only a single transmitter and a single receiver are used, so that only the distance between obstacles and objects can be measured. Angle information between obstacles and objects cannot be measured. For the situation where there is only a single obstacle distribution, the obstacle avoidance path can be selected only by the distance data controller. However, when multiple obstacles appear at the same time in the short distance of the object, the controller cannot choose a correct obstacle avoidance path because there is no angle information of the specific distribution of the obstacles. Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S15/42G01S15/93G01S5/18
CPCG01S5/18G01S15/42G01S15/931
Inventor 汤正新吕煜刘哲苏向英王辉
Owner HENAN UNIV OF SCI & TECH