Control method, device and system of ultrasonic transducer

A transducer and ultrasonic technology, applied in the field of ultrasonic sensing, can solve problems such as inability to detect, inaccurate detection, and distortion of transmitted waveforms, and achieve the effect of ensuring accuracy

Active Publication Date: 2014-08-20
BEIJING AIXINDE TECH
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Problems solved by technology

In some scenarios, the distance of only a few wavelengths is required, or even shorter, and the waveform excited by multiple pulses continuously transmitted by the ultrasonic wave will still have strong energy when it returns to the transmitting end after being reflected by a parallel reflective surface, so if it cannot Resonance is formed, which may affect the electro-acoustic conversion of th

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  • Control method, device and system of ultrasonic transducer
  • Control method, device and system of ultrasonic transducer
  • Control method, device and system of ultrasonic transducer

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Embodiment Construction

[0062] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0063] The following describes a scenario where the distance between the reflective surface and the ultrasonic transducer is kept constant and the transmitting frequency of the transmitting transducer is adjusted.

[0064] Such as figure 1 Shown, is the control method of a kind of ultrasonic transducer described in the present invention, comprises:

[0065] Step 11, when the trigger condition is met, obtain the first current wavelength of the ultrasonic wave emitted by the transmitting transducer of the ultrasonic transducer; wherein, the trigger condition can be: every fixed time interval; or environmental factors change. Environmental factors may be: factors that cause changes in the propagation speed of ultrasonic waves, thereby causing resonance im...

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Abstract

The invention provides a control method, device and system for an ultrasonic transducer. The control method for the ultrasonic transducer includes the following steps: when a triggering condition is satisfied, obtaining a first current wavelength of ultrasonic waves transmitted by a transmitting transducer of the ultrasonic transducer; obtaining a first current distance between a reflecting face and the ultrasonic transducer; obtaining a minimum value of an absolute value of a difference value between a doubled value of the first current distance and an integral-multiple value of the first current wavelength; judging whether the minimum value is larger than or equal to a threshold value; if so, determining an ideal transmitting frequency of the transmitting transducer according to the first current wavelength; according to the ideal transmitting frequency, adjusting the transmitting transducer so as to make the doubled value of the first current distance is an integral multiple of a second wavelength; and the second wavelength being the wavelength of ultrasonic waves transmitted by the adjusted transmitting transducer. The control method, device and system of the ultrasonic transducer are capable of improving the measurement accuracy.

Description

technical field [0001] The present invention relates to the field of ultrasonic sensing technology, in particular to a control method, device and system for an ultrasonic transducer. Background technique [0002] At present, with the development of ultrasonic technology, ultrasonic technology has been widely used in various fields, from industrial testing to medical testing, there is no such thing as ultrasonic technology. [0003] Some application fields require miniaturization of equipment and require ultrasonic short-distance continuous measurement. In some scenarios, the distance of only a few wavelengths is required, or even shorter, and the waveform excited by multiple pulses continuously transmitted by the ultrasonic wave will still have strong energy when it returns to the transmitting end after being reflected by a parallel reflective surface, so if it cannot The formation of resonance may affect the electro-acoustic conversion of the transmitting transducer, resul...

Claims

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Application Information

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IPC IPC(8): G05B19/042
Inventor 王晓敬
Owner BEIJING AIXINDE TECH
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