Door Sensing Device Using Multi-Function Sensor for Human Presence Detection
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Solution Overview
Problem
Existing home networking systems for security face limitations in providing services based on sensed information, as they often require multiple sensors and complex image analysis from cameras, leading to delayed service delivery and unnecessary information transmission.
Innovation Solution
An electronic device installed on doors or windows, equipped with sensors and a processor, senses the open/closed state and human presence, determining the direction of door/window opening and transmitting only necessary information to external devices through a communication circuit, allowing for selective service provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple sensors and cameras are used to obtain comprehensive information on door states, then the information completeness is improved, but the device complexity increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single sensor to perform multiple sensing functions simultaneously. The sensor detects both the open/closed state of the door and the position of humans nearby, eliminating the need for separate sensors for each function. This resolves the contradiction by maintaining information completeness while reducing device complexity.
2Measurement precision
If camera images are analyzed to determine door states, then the measurement precision is improved, but the processing time increases
Solution Approach 1:
The patent replaces the mechanical/optical system of camera imaging with a sensor-based detection system. The sensor directly detects door states and human positions through physical fields (such as magnetic or electric fields), eliminating the need for complex image capture and processing. This substitution maintains measurement precision while dramatically reducing processing time.
3Loss of information
If all sensed information is transmitted to external devices, then the information availability is improved, but the energy consumption increases
Solution Approach 1:
The patent extracts and transmits only the essential information needed for security purposes - specifically the door open/closed state and human position - while filtering out unnecessary data. This selective transmission maintains information availability for security services while reducing energy consumption by minimizing data transmission volume.
Data Source
AI summary
Disclosed is an electronic device comprising: a communication circuit, at least one sensor for sensing an open-or-closed state of a door and a person near the door, a processor electrically connected to the communication circuit and the at least one sensor, and a memory electrically connected to the processor.