Ultrasonic precise distance measuring and anti-interference method and system
An ultrasonic, precise technology for distance measurement
Pending Publication Date: 2020-10-20
WUHAN UNIV OF TECH
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Problems solved by technology
[0003] But at the same time, ultrasonic distance measurement also has precision problems, which are easily affected by other nearby ultrasonic signals, signal conversion time, medium temperature and other factors. The development of automation technology is closely related to accurate distance measurement. In order to achieve more intelligent research results, it is necessary to further reduce the The error of ultrasonic ranging
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[0034]In order to make the present invention easier to understand and facilitate the understanding of its purpose and advantages, the present invention will be further explained and described in conjunction with the implementation cases and accompanying drawings, but the present invention is not limited.
[0035] Ultrasonic accurate ranging and anti-jamming system provided by the present invention, its structure is as follows Figure 1-Figure 3 As shown, it is mainly composed of a speed measuring probe 1, a speed measuring baffle 2, a probe installation folding surface 3, several distance measuring probes and a signal processing circuit board, wherein: the several distance measuring probes are uniformly installed at an angle of θ On the ridgeline of the folded surface, a speed measuring baffle 2 with a fixed distance is arranged directly in front of the speed measuring probe. The above hardware constitutes the ultrasonic distance measuring device together.
[0036] The speed-...
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The invention discloses an ultrasonic precise distance measuring and anti-interference method and system. The system is mainly composed of a speed measuring probe (1), a speed measuring baffle (2), aprobe installation folding surface (3), a plurality of distance measuring probes and a signal processing circuit board. The distance measuring probes are evenly installed on the ridge of the installation folding surface (3) with the included angle theta, and the speed measuring baffle (2) with the fixed distance is arranged in front of the speed measuring probe (1). The method comprises the stepsof transmitting ultrasonic waves with different frequencies by adjacent probes, judging the shape of a measured target, performing sound wave-current conversion delay compensation, controlling the angle of a folding surface installation surface of the probe, and measuring the instant wave velocity of ultrasonic waves at the current air temperature. Therefore, the ultrasonic distance measuring system avoids interference of air temperature, piezoelectric conversion delay, multiple echo interference, secondary measurement targets and the like in the working process, and the accuracy and the anti-interference performance of ultrasonic distance measuring are comprehensively improved.
Description
technical field [0001] The invention belongs to the technical field of distance measurement, in particular to an ultrasonic precise distance measurement and anti-interference method and system. Background technique [0002] At present, automation technology is developing rapidly, and distance measurement technology is getting more and more attention in the industry. Ultrasonic waves are widely used because of their long propagation distance, strong directivity, and anti-rain and snow interference. The principle is to use electric pulses to excite ultrasonic transducers. The device generates an ultrasonic signal. After the ultrasonic signal propagates in the medium and touches an object to generate an echo, the echo is received and the distance is calculated according to the time difference between the transmitted signal and the received signal. [0003] But at the same time, ultrasonic distance measurement also has precision problems, which are easily affected by other nearb...
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Patent Timeline
Login to View More IPC IPC(8): G01S15/10G01S7/52G01S7/521G01S7/524
CPCG01S15/10G01S7/52006G01S7/521G01S7/524
Inventor 张洪昌吴宇通曾娟辜志强
Owner WUHAN UNIV OF TECH