Ultrasonic control method, device and apparatus and medium
A control method, ultrasonic technology, applied in the direction of mechanical oscillation control, control/regulation system, non-electric variable control, etc., can solve the problem of long blind time of ultrasonic sensor
Active Publication Date: 2021-07-23
WEIFANG GOERTEK MICROELECTRONICS CO LTD
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[0004] The main purpose of the present invention is to provide an ultrasonic control method, device, equipment and storage medium, aiming to solve the technical problem that the existing ultrasonic sensor has a long blind time
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[0042] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0043] It should be noted that the configurations of existing ultrasonic sensors can be divided into two types. One is single configuration, which refers to the use of a single piezoelectric sensor. The same sensor is used for sending and receiving return signals. Single configuration After the sensor signal is transmitted, even if the excitation signal is removed, the vibration device in the ultrasonic sensor will still undergo vibration attenuation for a period of time due to inertia, and will not return to a static state until the residual energy is consumed, so there will be a period of blind time , the echo signal received within this blind zone time cannot be accurately identified due to the superposition of the aftershock signal, and this limits the shortest detection distance available to the single-configurati...
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The invention discloses an ultrasonic control method, device and apparatus and a medium. The method comprises the steps of: obtaining the drive sound wave characteristics of an ultrasonic drive signal in the transmission process of the ultrasonic drive signal; according to the driving sound wave characteristic, determining a sound wave suppression characteristic of an anti-phase suppression signal; and when the transmission of the ultrasonic driving signal is finished, applying the anti-phase suppression signal to an ultrasonic sensor according to the suppression sound wave characteristic so as to suppress the resonance generated by the ultrasonic driving signal through the anti-phase suppression signal. When the transmission of the ultrasonic driving signal is finished, the anti-phase suppression signal is immediately applied to the ultrasonic sensor, namely, a reverse acting force is applied to the vibration device at the moment of the transmission of the signal, so that the resonance generated by the ultrasonic driving signal is suppressed, the attenuation of residual energy is accelerated, and the vibration attenuation time is reduced, and therefore, the blind area time can be shortened, and the reliability of a system can be improved, therefore, the shortest detection distance of the ultrasonic sensor is reduced, and the precision of close-range detection is improved.
Description
technical field [0001] The invention relates to the field of ultrasonic control, in particular to an ultrasonic control method, device, equipment and storage medium. Background technique [0002] Ultrasonic measurement technology has been widely used and highly recognized in modern industry because of its high measurement accuracy, wide range, and good reliability. The key to ultrasonic measurement technology lies in the detection of ultrasonic echo signals. The so-called ultrasonic echo signals are for ultrasonic excitation signals, which means that after the same ultrasonic transducer transmits ultrasonic excitation signals, the ultrasonic excitation signals pass through different media interfaces. (such as water and air, water and metal, etc.) the ultrasonic signal formed by reflection or the ultrasonic signal sent back after receiving the ultrasonic excitation signal through another transducer. Utilizing the propagation time of the ultrasonic excitation signal and the u...
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IPC IPC(8): G05D19/02
CPCG05D19/02
Inventor 陈思颖王亮舒许志尤
Owner WEIFANG GOERTEK MICROELECTRONICS CO LTD