Automatic impedance matcher for magnetostrictive transducer

An automatic impedance and impedance matching technology, applied in the measurement of resistance/reactance/impedance, instruments, fluids utilizing vibration, etc., can solve the problems of complex structure and high cost, and achieve the effect of high matching accuracy, fast matching speed and stable performance.
CN110646673APending Publication Date: 2020-01-03HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2020-01-03

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Abstract

The invention provides an automatic impedance matcher for a magnetostrictive transducer. The automatic impedance matcher comprises an impedance matching module, a signal collection module, a feedbackmodule, and a single-chip microcomputer control module; the impedance matching module comprises two sets of 8-channel 5V relay modules with optocoupler isolation functions, a 5V DC power supply, 16 CBB matching capacitors and 16 resistors with resistance of 1kohm; the two sets of relay modules have the same structure and respectively comprise 8 relays connected in parallel; DC + and DC- Ports of each set of relay modules are connected to a positive electrode c and a negative electrode d of the 5V DC power supply respectively; and an assorted H jumper cap is respectively inserted into each of high and low level trigger selection ends S1 to S16 of each relay. The automatic impedance matcher provided by the invention enables the transducer to continuously and stably work in a resonant state under different environments, working conditions and loads, thereby significantly improving the working efficiency of the transducer.
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Description

technical field

[0001] The invention relates to an impedance matching device, in particular to an automatic impedance matching device for a magnetostrictive transducer. Specifically, an impedance matching module, a signal acquisition module, a feedback module and a single-chip microcomputer control module are used to realize dynamic automatic impedance matching between the power supply and the magnetostrictive transducer. Background technique

[0002] A magnetostrictive transducer is an electromagnetic mechanical device that uses magnetostrictive materials for energy conversion, and is a device that converts one form of energy into another form of energy. It is widely used in the fields of underwater acoustics, ultrasonic and active vibration control.

[0003] The impedance matching between the magnetostrictive transducer and the power supply directly affects the working efficiency of the magnetostrictive transducer. In recent years, the manufacturing process of magnetostr...

Claims

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