The inductive switch of shoe lights brings convenience and unique experience to its use. Its design and sensitivity optimization are the key links to improve the performance of shoe lights.
First of all, the principles of inductive switches are varied. Common ones include infrared sensing, pressure sensing and acceleration sensing. Infrared sensing detects the approach of human bodies or objects by emitting and receiving infrared rays, and triggers the switch when there is an obstruction or reflection. Pressure sensing relies on the change of pressure on the sole of the shoe, such as the pressure difference generated when a person steps on it to turn on the shoe lights. Acceleration sensing can sense the acceleration change of the shoe movement, such as the change of movement during walking and running to control the switch state of the light.
In terms of design, for infrared inductive switches, the layout and angle of the infrared transmitting and receiving modules should be reasonably determined. The power of the transmitting module should be moderate, which should ensure sufficient sensing range and not consume too much energy. The sensitivity of the receiving module should be precisely adjusted to accurately identify the changes in the reflected infrared signal and filter out interference signals in the environment, such as the influence of other infrared sources around.
When designing a pressure inductive switch, it is necessary to choose the appropriate type of pressure sensor and installation location. The sensor should be able to sensitively sense tiny changes in pressure and maintain stable performance after long-term pressure. Its installation position is usually at the key stress points of the sole, such as the heel and sole of the foot. The pressure is transmitted to the sensor through a clever structural design. At the same time, the comfort of wearing shoes should be taken into consideration to avoid the sensor from being raised or too hard and affecting the wearing experience.
The acceleration sensing switch needs to optimize its algorithm and threshold setting. Through a large amount of experimental data and motion model analysis, the range of acceleration changes under different motion states is determined, and the appropriate trigger threshold is set based on this. For example, the acceleration characteristics of different actions such as walking, running, and jumping are distinguished, so that the switch can respond accurately and avoid false triggering or delayed triggering.
In order to optimize the sensitivity, signal amplification and filtering technology can be used in circuit design. Signal amplification can enhance the weak signal collected by the sensor, making it easier to be identified and processed. Filtering technology can remove clutter and noise, highlight effective signals, and improve the accuracy of sensing. At the same time, the software algorithm can also be further optimized, such as using a dynamic threshold adjustment algorithm to automatically adjust the sensing sensitivity according to environmental changes and the use of shoe lights.
In actual testing, various usage scenarios are simulated for verification, including walking on different roads, running at different speeds, standing in different postures, etc. A large amount of data is collected and analyzed, and the design and sensitivity parameters of the inductive switch are repeatedly adjusted according to the test results to achieve the best performance and meet the user's needs for the convenience and reliability of shoe lights switches in various situations.
