Matching device and method

Abstract

The invention provides a matching device and method, which belong to the field of measurement. The matching device comprises an attitude sensor, a coil, a single-chip microcomputer and a matching channel group, wherein the matching channel group comprises a plurality of mutually independent branch channels which are oppositely arranged in pairs; one end of the coil is connected with one side of one or more branch channels in the matching channel group through a first shielding line, and the other end of the coil is grounded; the other side of the branch channel receives a signal through a second shielding line; and the attitude sensor is connected with a signal input port of the single-chip microcomputer. According to the method, an approximate value of a measured magnetic field is obtained through an attitude sensor, and according to the relation between Larmor precession frequency and a geomagnetic field in classical physics, a single-chip microcomputer determines an accessed branch channel by searching a matching network list; and the bandwidth of all combination modes of each branch channel in the matching channel group covers the frequency of the whole magnetic field measurement range. The method can greatly improve the matching efficiency, solves the problem that the equipment is always in a matching state, and improves the working frequency and stability of the equipment.

Description

technical field [0001] The invention belongs to the field of measurement, and in particular relates to a matching device and method. Background technique [0002] When receiving small signals, the signal-to-noise ratio of the signal is often improved through resonance, and a matching mechanism is required. At present, whether it is in the high-frequency or low-frequency field, the problem of matching strategy is implemented by sweeping frequency. The shortcomings of this implementation method are obvious, and the matching efficiency is low, which seriously limits the operating frequency of the device. [0003] For example, foreign proton sensors adopt the frequency sweep method when receiving signals. Each measurement requires a comprehensive scan of multiple matching channels, and even a combined scan of multiple matching channels to finally complete the best The selection of the matching channel is a very slow process. The fatal flaw of the matching mechanism is the low m...

AI Technical Summary

Problems solved by technology

[0002] When receiving small signals, the signal-to-noise ratio of the signal is often improved through resonance, and a matching mechanism is required. At present, whether it is in the high-frequency or low-frequency field, the problem of matching strategy is implemented by sweeping frequency. The shortcomings of this implementation method are obvious, the matching efficiency is low, and the operating frequency of the device is severely limited.

[0003] For example, foreign proton sensors adopt the frequency sweep method when receiving signals. Each measurement requires a comprehensive scan of multiple matching channels, and even a combined scan of multiple matching channels to finally complete the best The selection of the matching channel is a very slow process. The fatal flaw of the matching mechanism is the low matching efficiency. It may happen that the matching channel cannot be determined and the matching is unstable, which will cause the system to be in a matching state all the time, and the device cannot operate normally. , can not complete the normal measurement

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