Timeline-based ultrasonic ranging method
A ranging method and ultrasonic technology, applied in the re-radiation of sound waves, radio wave measurement systems, measurement devices, etc., can solve problems such as ultrasonic signal attenuation, and achieve the effect of achieving consistent accuracy
Active Publication Date: 2014-08-20
泰安市安顺矿山设备有限公司
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[0003] The purpose of the present invention is to provide a timing-based ultrasonic ranging method, the accuracy in the full range is not affected by the measurement distance, the consistency of the accuracy in the full range is realized, and a series of problems caused by the attenuation of the ultrasonic signal are indeed solved
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[0025] Attached below figure 1 And attached figure 2 The invention is illustrated by way of example.
[0026] Such as figure 1 Shown, the hardware schematic diagram of the present invention,
[0027] It has the following hardware circuits: microprocessor, pulse width modulator, first filter, transmitting power amplifier, ultrasonic transmitting transducer, ultrasonic receiving transducer, signal amplifier, second filter, analog-to-digital converter and temperature sensor ;
[0028] The microprocessor is connected with the pulse width modulator, and the pulse width modulator generates a rectangular wave to the first filter, and the first filter converts the rectangular wave into a sine wave and sends it to the transmitting power amplifier, and then transmits the energy through ultrasonic transmission The device emits ultrasonic signals;
[0029] The ultrasonic receiving transducer receives the ultrasonic echo signal, passes through the signal amplifier, enters the second ...
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The invention relates to a timeline-based ultrasonic ranging method and belongs to the technical field of ultrasonic ranging. In the method, a microprocessor, a pulse width modulator, a first filter, a transmitting power amplifier, an ultrasonic transmitting transducer, an ultrasonic receiving transducer, a signal amplifier, a second filter, a analog-digital converter and a temperature sensor are applied. The most commonly-used ultrasonic ranging method is a transition time measurement method, and the working principle of the ultrasonic ranging method is that an ultrasonic transmitting probe transmits ultrasonic pulses to media and ultrasonic waves are reflected back to a receiving probe after encountering an object to be measured. In the prior art, the transition time of the ultrasonic waves is measured generally in a threshold value method. According to the timeline-based ultrasonic ranging method, the transition time of the ultrasonic waves is measured in an analog-digital conversion method, the defect that measurement of any point can not be achieved through the threshold value method is overcome, the measurement accuracy is high, the accuracy in the whole measuring process is not influenced by the measuring distance, the accuracy uniformity in the whole measuring process is achieved, and a series of problems caused by ultrasonic signal attenuation are solved.
Description
technical field [0001] The invention belongs to the technical field of ultrasonic ranging, and in particular relates to a timing-based ultrasonic ranging method. Background technique [0002] Due to the strong directivity of ultrasonic waves, ultrasonic waves are often used for distance measurement. As a typical non-contact measurement method, ultrasonic distance measurement has no deformation effect on the measured object, and the ultrasonic wave is not affected by visible light, visibility and other factors during the propagation process, so it is widely used in industrial automatic control, engineering measurement and robotics. be widely used. However, ultrasonic ranging also has the disadvantages of short measurement distance and poor measurement accuracy. This is related to the inherent characteristics of ultrasonic waves. Other factors, such as ambient temperature and wind speed, will also have a certain impact on the measurement. These factors limit the Ultrasonic r...
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IPC IPC(8): G01S15/08
CPCG01S15/101
Inventor 郭华于胜文于涛
Owner 泰安市安顺矿山设备有限公司