Control method for intelligent toilet cover based on single infrared sensor
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Solution Overview
Problem
Intelligent toilet covers using microwave and passive infrared sensors face issues with false activation due to wide field of view and inability to detect static objects, respectively.
Innovation Solution
A control method employing a single infrared sensor that adjusts its sensing distance and detects human approach and gestures to control the toilet cover and seat operations, reducing false activations and improving detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If microwave sensors are used for toilet cover control, then the sensing range is wide, but false activation occurs due to omnidirectional detection
Solution Approach 1:
The patent applies local quality by making the infrared sensor directional rather than omnidirectional. The sensor is positioned to detect infrared radiation only from specific directions (front and rear of the toilet), creating localized detection zones that exclude areas like washbasins. This directional detection property resolves the contradiction by maintaining adequate sensing range while eliminating false activations from unrelated areas.
2Use of energy by moving object
If passive infrared sensors are used for toilet cover control, then energy consumption is reduced, but static objects cannot be detected
Solution Approach 1:
The patent applies dynamics by implementing adjustable sensing distance that adapts based on detection needs. The control module dynamically adjusts the infrared sensor's detection range - using longer distances for approach detection and shorter distances for gesture detection. This dynamic adjustment maintains reliable detection of both moving and static objects while keeping energy consumption low, as the sensor only operates at high power when necessary.
3Measurement precision
If multiple sensors are used for human body and gesture detection, then detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by making a single infrared sensor perform multiple functions. The same infrared sensor detects both human body approach (at longer distances) and user gestures (at shorter distances). The control module distinguishes between these functions by analyzing the sensing distance and detection patterns. This multi-functional approach achieves the detection accuracy of multiple sensors while maintaining the simplicity and low cost of a single sensor system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces false activations, enhances user experience, and saves costs by using a single infrared sensor for both distance and gesture detection, improving the functionality of intelligent toilet covers.
Implementation Method 1
sensing a human body approaching the intelligent toilet cover by an infrared sensor
Data Source
AI summary
The present disclosure provides a control method of an intelligent toilet cover based on a single infrared sensor which includes the following steps: sensing a human body approaching the intelligent toilet cover by an infrared sensor, and transmitting an approaching signal to a first control module to control a second opening/closing mechanism to open the toilet cover, wherein the infrared sensor has a first sensing distance; controlling a sensing distance of the infrared sensor to shorten the sensing distance from the first sensing distance to a second sensing distance; and sensing a gesture signal by the infrared sensor, and transmitting the gesture signal to the first control module to control a first opening/closing mechanism to open a seat or perform flushing.