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Ultrasonic sound intensity detection circuit

A detection circuit and ultrasonic technology, which is applied in the measurement of ultrasonic/sonic/infrasonic waves, measurement devices, and electrical devices, etc., can solve the problems of low detection accuracy, complicated production and debugging, and large equipment is not suitable for carrying around. The effect of strong interference ability and high reliability

Inactive Publication Date: 2014-01-22
CONPROFE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The traditional circuits for measuring ultrasonic sound intensity are mostly analog circuits, which have the characteristics of complex production and debugging, low detection accuracy, and the overall equipment is relatively large and not suitable for carrying around. It is difficult to meet the detection requirements in modern industrial environments.

Method used

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  • Ultrasonic sound intensity detection circuit

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] like figure 1 As shown, this embodiment includes a first signal input terminal Vin1, a second signal input terminal Vin2, a first signal output terminal Vout1, a second signal output terminal Vout2, a first capacitor C1, a second capacitor C2, a third capacitor C3, The fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, Eighth resistor R8, ninth resistor R9, tenth resistor R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, fourteenth resistor R14, fifteenth resistor R15, sixteenth resistor R16 , the first diode D1, the second diode D2, the third diode D3, the fourth diode D4, the fifth diode D5, the sixth diode D6, the seventh diode D7, A reference voltage c...

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Abstract

The invention discloses an ultrasonic sound intensity detection circuit. The ultrasonic sound intensity detection circuit utilizes a piezoelectric ceramic sensor to convert load vibration into alternating-current signals, the signals among direct-current fluctuating signals, the frequency of which is higher than 20KHZ, are filtered out by a limiter diode network, a precision full-wave rectifier circuit and a second-order low-pass filter circuit, and after subsequent acquisition and processing, a voltage value U is obtained. The direct-current components in the signals are filtered out by a direct current filter circuit. A frequency value F is then obtained by an amplifying circuit and a hysteresis comparator. According to a relation of a sound intensity value, a voltage signal and working frequency F, W =K * F*U<2>, and thereby an ultrasonic wave-driven sound intensity value can be worked out. The ultrasonic sound intensity detection circuit has the characteristics of small size, high reliability, high anti-interference capability and the like, and is convenient to carry and use.

Description

technical field [0001] The invention belongs to the technical field of industrial control and relates to a circuit, in particular to an ultrasonic sound intensity detection circuit. Background technique [0002] An ultrasonic transducer is a mechanical device that converts high-frequency alternating current energy into mechanical energy. With the advancement of modern industrial technology, ultrasonic transducers have been widely used in many industries. As the most important indicator for measuring the working effect of ultrasonic transducers, sound intensity (sound power) is of great significance in actual industrial sites. . However, due to the particularity of the working principle of ultrasonic equipment, there are strong high-frequency signals in the output AC power, which puts forward relatively high requirements for the ultrasonic sound intensity detection circuit. [0003] Traditional circuits for measuring ultrasonic sound intensity are mostly analog circuits, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/08
Inventor 孔亚广陈洪欢赵晓东邹洪波
Owner CONPROFE TECH GRP CO LTD
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