Smart watch interacting method, smart watch and photoelectric rotary knob assembly

A smart watch, comprising a controller, an LCD interface connected to the controller, wherein the smart watch further comprises a photoelectric rotary knob assembly having a rotary knob;

• the controller comprises an obtaining module, a mapping module and an interacting module;
• the obtaining module is configured to obtain a rotation direction and rate information of the rotary knob, and obtain a displacement information of the rotary knob;
• the mapping module is configured to query an interacting mapping library to determine an operation instruction according to the rotation direction, rate information and the displacement information of the rotary knob;
• the interacting module is configured to display an interacting operation on the LCD interface according to the operation instruction;
• wherein the photoelectric rotary knob assembly further comprises a photoelectric sensor connected to the controller, the photoelectric sensor being configured to obtain the rotation direction and rate information of the rotary knob, and further configured to obtain the displacement information of the rotary knob;
• wherein the photoelectric sensor comprises a laser light source unit and an image detecting unit, the laser light source unit emitting laser light and illuminating on a surface of the rotary knob, the image detecting unit determining the rotation direction and rate information of the rotary knob based on the light reflected by the surface of the rotary knob;
• wherein the laser light source unit and the image detecting unit are both arranged inside a three-dimensional sensing chamber formed by the photoelectric sensor.

A photoelectric rotary knob assembly, which is mounted on a watch case, comprising a rotary knob and a photoelectric sensor;

• the rotary knob comprises a rotary cap and a detection rod extending from the rotary cap, the detection rod extending into the photoelectric sensor, the photoelectric sensor being connected to the controller, wherein the photoelectric sensor is configured to obtain a rotation direction and rate information of the detection rod, and obtain a displacement information of the detection rod;
• the controller is configured to query an interacting mapping library to determine an operation instruction according to the rotation direction and rate information and the displacement information, and display an interacting operation on the LCD interface according to the operation instruction;
• wherein the photoelectric sensor comprises a laser light source unit and an image detecting unit, the laser light source unit emitting laser light and illuminating on a surface of the rotary knob, the image detecting unit determining the rotation direction and rate information of the rotary knob based on the light reflected by the surface of the rotary knob;
• wherein the laser light source unit and the image detecting unit are both arranged inside a three-dimensional sensing chamber formed by the photoelectric sensor.