System and method for controlling low power consumption power supply of pseudo-random code encoder

Abstract

The invention discloses a system and a method for controlling a low power consumption power supply of a pseudo-random code encoder. The system comprises a main power supply, a battery power supply, a power supply gating unit, a power supply monitoring unit, a monitoring control system and a main system core processing unit, wherein the monitoring control system comprises a monitoring control unit, a signal processing unit and a first electronic switch; the monitoring control unit is used for controlling the power supply of the first electronic switch and the signal processing unit according to a power supply state signal provided by the power supply monitoring unit and an encoder main shaft rotation motion signal provided by the signal processing unit and enabling the monitoring control system to be switched into alternating working conditions of dormancy / working with low power consumption when the battery power supply supplies power and an encoder does not rotate. The system for controlling the low power consumption power supply disclosed by the invention solves the problems that the position change cannot be recorded when power is lost, and solves the problem that the power consumption of a standby power supply is high.

Description

technical field [0001] The invention belongs to the technical field of power supply control, and in particular relates to a low-power consumption power supply control system and a control method of a pseudo-random code encoder. Background technique [0002] Absolute encoders / scales are often used to measure and calibrate the rotation angle / linear displacement of instruments or equipment. Traditional absolute encoders / scales are all encoded in parallel. The higher the number of digits, the more code channels, the corresponding code disc / scale area, and the number of detection heads must increase proportionally, and the sensor structure size will inevitably increase. Large, which greatly limits the use in applications where the space structure is tight. Therefore, many new absolute sensors have emerged as the times require, such as encoders with matrix encoding, M-sequence encoding, and pseudo-random codes. Compared with the traditional absolute encoder, the new absolute enc...

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Problems solved by technology

[0012] The purpose of the present invention is to provide a pseudo-random code quasi-absolute encoder for the problem that it needs to rotate a certain angle to obtain the real physical angle position information after power-off, and at the same time, the backup power consumption is large during power-off. The low-power power supply control system and control method of the random code encoder, by adding the monitoring and control system, solves the problem that the position change cannot be recorded when the power is off, and adopts the sleep / working alternate working state in the monitoring state to solve the backup power consumption in the prior art high problem

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