Rotating member rotation radian detection method based on triaxial magnetometer
A technology of rotating parts and three-axis magnetic force, which is applied in the field of Internet of Things systems, can solve the problems that the installation and connection are easily limited by the structure of the device, the sensor is easy to wear, and the detection accuracy and service life of the sensor are affected, so as to achieve accurate and reliable detection results and service life. Long-lasting, low-impact effects
Inactive Publication Date: 2019-11-26
ANHUI ZHONGKE INTELLIGENT PERCEPTION BIG DATA IND TECH RES INST CO LTD
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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.
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