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Inductive non-metallic ultrasonic emitting system

A transmitting system, ultrasonic technology, applied in the generation of ultrasonic/sonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, electrical pulse generator circuits, etc. It can reduce the volume, eliminate potential safety hazards, reduce design cost and development cycle.

Inactive Publication Date: 2017-12-15
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] ① It is required to provide a stable DC high-voltage power supply, and this DC high-voltage power supply must match the transmitting circuit part. At present, the custom-made high-frequency transformer is usually used, which brings the entire transmitting system too large and the design cycle is too long. , the problem of excessive development costs, and the high voltage above +500V will also bring a very large safety hazard
[0006] ②It is difficult to adjust the circuit parameters
If there are special requirements for the excitation signal of the probe, it is difficult to change the driving circuit parameters accordingly

Method used

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  • Inductive non-metallic ultrasonic emitting system

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Embodiment Construction

[0018] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:

[0019] The invention provides an ultrasonic probe drive circuit that does not require high-voltage power supply and has convenient parameter adjustment. It includes two parts: a square wave generator with adjustable duty ratio and an ultrasonic transmitting circuit. The square wave generator with adjustable duty cycle such as figure 2 shown.

[0020] figure 2 It includes NE555 integrated chip U1, resistor R1, resistor R2, sliding resistor RV1, capacitor C1, capacitor C2, diodes D1 and D2 as switching elements. Connect pins 6 and 2 of NE555 together, and connect capacitor C1 between ground and ground. Connect capacitor C2 between pin 5 of NE555 and ground. Diode D1 is connected between pin 6 and pin 7 of NE555, the anode of D1 is connected to pin 7 of NE555, and the cathode of D1 is connected to pin 6 of NE555. Connect resistor R1, sliding rheost...

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Abstract

The invention discloses an inductive non-metallic ultrasonic emitting system, belongs to the technical field of non-metallic ultrasonic energy converter driving systems, and aims at providing an ultrasonic probe driving circuit without high-voltage power supply. The parameters of the ultrasonic probe driving circuit are convenient to adjust. The emitting system includes an ultrasonic emitting circuit and a square wave generator adjustable in duty ratio, the square wave generator adjustable in duty ratio includes an integrated chip, a first resistor, a second resistor, a sliding resistor, a first capacitor, a second capacitor, a first diode as a switch element and a second diode. The emitting system does not need to be provided with a direct-current high-voltage power supply, the safety hazard is eliminated, the size of the emitting circuit and the design cost are reduced, and the development cycle is shortened.

Description

technical field [0001] The invention discloses an inductive non-metallic ultrasonic transmitting system, relates to a new type of non-metallic ultrasonic transducer driving system, and particularly relates to an ultrasonic transmitting system which adapts to various power levels, has small volume, and is convenient to adjust driving waveform parameters. system. Background technique [0002] Ultrasonic emission system is a relatively important part of the whole ultrasonic non-destructive testing system. The efficiency of ultrasonic flaw detection and the accuracy of final detection are closely related to the ultrasonic emission module. In recent years, most of the driving systems of ultrasonic transducers use the pulse signal generated by the energy storage capacitor in the process of instantaneous charging and discharging to excite the ultrasonic transducer. figure 1 It is a conventional ultrasonic emission drive circuit diagram. For details, see the master's thesis "Resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/24G01N29/34H03K3/017H03K3/53H03K3/021
CPCG01N29/24G01N29/343G01N2291/0289H03K3/017H03K3/021H03K3/53
Inventor 彭超
Owner DONGGUAN UNIV OF TECH
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