What is the Hall component that is inseparable from the coil motor?
time£º2019/7/12 click£º6904
What is the Hall component that is inseparable from the coil motor? Sound coil motors are more suitable for small spaces, such as scenes that require small trips, high speed, and high acceleration movements. A particularly representative application is to achieve automatic focus of the mobile phone camera through a sound coil motor, that is, to adjust the lens through a sound coil motor. position, In order to present a clear image, the 4.7-inch version of the iPhone 6 is known to be based on the iPhone 5s and uses the "middle embedded ring ring motor" to increase the focusing speed.
The audio coil motor autofocus device described above is also known as the audio coil motor autofocus drive. This drive can be divided into two parts: the moving part and the fixed part. The moving part includes the lens module Lens, the lens holder Holder, and two permanent magnets. Magnets; The fixed part includes a Hall element, two coil Coils, and two guide rods that are perpendicular to the fixed seat.
When autofocusing, the coil and the permanent magnet will produce electromagnetic interactions and thus generate upward forces to drive the lens head and lens module. The Hall element is fixed on the side near the permanent magnet to sense the displacement of the moving part of the drive and output a ratio signal corresponding to the magnetic field strength. After processing such ratio signals, the appropriate coil holding current will be calculated. Out, It is used to adjust the position of the lens module so that it can be maintained at the focal point position.
Kunshan Tongmao Electronics Co., Ltd. has been deeply cultivating the motor field for many years. It has the technical experience of Europe and the United States in the industry. It is designed with customer appeal as the guide and specializes in customizing sound coil motors with reasonable performance for customers.
This article originated from the original company of Kunshan Tongmao Electronics Co., Ltd.(www.tmmotion.com). Please indicate the source.
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