Rotating member rotation radian detection method based on triaxial magnetometer

Abstract

The invention discloses a rotating member rotation radian detection method based on a triaxial magnetometer. The end surface of a rotating member is fixedly provided with a permanent magnet; a sensorwith the built-in triaxial magnetometer is fixedly arranged on a frame where the rotating member is mounted through a support member; the permanent magnet periodically approaches the sensor with the rotation of the rotating member; and the sensor detects magnetic field intensity of the permanent magnet and sends the magnetic field intensity to a microprocessor of the sensor. The magnetic field intensity and the rotation time of the rotating member meet a sine curve function; when the magnetic field intensity reaches an extreme value for the first time and reaches the extreme value for the second time, the microprocessor determines the peak position and trough position of a sine curve and analyzes sinusoidal transformation process of the magnetic field intensity according to change laws ofthe magnetic field intensity in the period of time, and then, calculates the rotation radian of the rotating member. The sensor does not need to be connected with the rotating member and the sensor has no rotation part, so that the service life is long, and the detection result is accurate and reliable.

Description

technical field [0001] The invention belongs to the field of Internet of Things systems, and in particular relates to a method for detecting the rotation arc of a rotating component based on a three-axis magnetometer. Background technique [0002] When detecting the rotation state of rotating parts, angle sensors are mostly used in the existing technology. Angle sensors are widely used in industrial and agricultural production, meteorology, environmental protection, national defense, scientific research, aerospace and other fields. They mainly detect and transmit the angle of rotation of parts to Control the system to achieve the effect of function transformation. However, the angle sensor needs to be connected to the axis of the rotating part, which cannot be used in many scenarios. For example, the shaft end of the rotating part is provided with other parts that cannot be directly connected to the sensor, or there is a lot of dust and debris, which will easily cause wear ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for detecting the rotation arc of a rotating part based on a three-axis magnetometer to solve the problem that the installation and connection of the sensor in the prior art are easily restricted by the structure of the device due to the need to connect the sensor to the rotating part, and the rotating part of the sensor is long-term. The rotation is easy to wear, which affects the detection accuracy and service life of the sensor