Magnetostrictive biosensor driving device

Abstract

The invention provides a magnetostrictive biosensor driving device. A DC solenoid coil is wound on an iron core, the upper end of the iron core is fixed on a coil mounting seat, an AC flat coil is fixed on the coil mounting seat, the AC flat coil is is arranged in parallel with a magnetostrictive biosensor, the magnetostrictive biosensor is fixed on a sensor mounting seat, the coil mounting seat is fixed on a first shell, and the sensor mounting seat is fixed on a second shell. According to the magnetostrictive biosensor driving device provided by the invention, a driving magnetic field is changed by adjusting the current, a driving coil can be separately modified according to different AC and DC magnetic field requirements, thereby reducing the repeated modifications and the input cost ofthe hardware circuit drive; and by reducing the use of permanent magnets, precise control of the magnetic field can be achieved to achieve optimal electrical signals.

Description

technical field [0001] The invention relates to the technical field of biosensors, in particular to a magnetostrictive biosensor driving device. Background technique [0002] Microfluidic control and surface plasmon resonance are currently the most common label-free optical biosensors in biosensor applications. The cost is high, the operation is cumbersome, and the professional knowledge is relatively strong. In the spectrum detection series, fluorescence and Raman detection are mainly used, which are also expensive. In terms of detection such as test paper, the detection accuracy is relatively low. In this case, the development of a magnetostrictive biosensor is very important, and the development of a magnetostrictive biosensor driving device is also important. [0003] At present, in the development of the magnetostrictive material driving device, in terms of the speaker, the driving coil is directly wound on the magnetostrictive material and driven by the peripheral p...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent CN206431142U discloses a biological detection chip, which involves a magnetostrictive sensor drive coil, which mainly uses photolithography technology to make the coil, which is very difficult in its manufacturing process, and there are many manufacturing processes and a lot of equipment used. The production cost is expensive. At the same time, the thickness of the coil produced by photolithography technology is difficult to exceed 10um in the width of 10um. The driving coil produced by it has a large resistance. Small, extremely demanding on its hardware circuit drive system

Among them, Wu still uses the Helmholtz coil as the main driving device, which has a complex structure and a large volume, and the sensor can only be used inside, and there is a lack of cumbersome quick replacement in other areas of use.

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