Subdivision motor driving circuit for realizing photometer grating direct drive

Abstract

The invention discloses a subdivision motor driving circuit for realizing photometer grating direct drive. The subdivision motor driving circuit comprises a micro stepping motor driver, wherein the micro stepping motor driver is provided with a working mode configuration port, a bidirectional control port connected with an MCU and an output port connected with a stepping motor; the bidirectional control port comprises a rotation direction control port, a rotation step number setting port, a working state control port and a micro-step resolution setting port; the rotation step number setting port receives the rotation step number of each working state pre-stored and solidified in the MCU after the optocoupler positioning is initialized; and the working state control port configures a corresponding motor subdivision ratio and a micro-step resolution ratio according to actual requirements. The subdivision motor driving circuit is simple in matching and debugging, few in monochromator structural parts, capable of reducing stray light, low in overall scheme price and capable of improving instrument performance, and is a new scheme with high cost performance; the wavelength moving speedis high, and the subdivision motor driving circuit is quite silent; and the performance level of a high-end instrument is achieved.

Description

technical field [0001] The invention belongs to the field of photometer application drive circuits, and in particular relates to a subdivision motor drive circuit for realizing photometer grating direct drive. Background technique [0002] The grating transmission device of the traditional spectrophotometer generally uses a linear screw or a reduction ratio gear transmission, which not only requires high technical requirements for the mechanical structural parts, but also is expensive, and the installation and debugging are more troublesome. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a subdivision motor drive circuit for direct drive of the photometer grating, which solves the problem of troublesome installation and debugging of the traditional spectrophotometer grating transmission device in the prior art. [0004] The present invention adopts the following technical solutions for solving the problems of th...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a subdivision motor drive circuit that realizes the direct drive of the photometer grating, which solves the problem of troublesome installation and debugging of the conventional spectrophotometer grating transmission device in the prior art

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