Toilet Radio Wave Sensor Layout for Accurate Human Detection
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Solution Overview
Problem
The existing toilet seat apparatuses face reduced detection precision due to the reflection of radio waves by the metal member inside the toilet seat, leading to potential misdetection of water movement as human body movement.
Innovation Solution
The radio wave sensor is positioned higher than the tank, with the toilet lid positioned rearward when open and the maximum directivity direction of the radio wave passing through the toilet seat opening, reducing reflections and enhancing detection precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the human body detector is disposed at the low tank equipment to avoid metal member reflection, then the detection precision is improved, but the front of the detector is covered by the toilet lid when open, causing radio wave reflection and potential misdetection
Solution Approach 1:
The patent changes the spatial dimension of the radio wave sensor arrangement by positioning it on the side surface of the tank rather than on the top surface. This lateral placement allows the sensor to radiate radio waves horizontally through the toilet seat opening without being blocked or reflected by the toilet lid, resolving the contradiction between detection precision and radio wave reflection interference
Solution Approach 2:
The patent introduces the toilet seat opening as an intermediary space through which radio waves can pass. By positioning the sensor on the tank side surface and directing radio waves through this opening, the system creates a clear transmission path that avoids direct interaction with the metal toilet lid, eliminating the harmful reflection effect
2Measurement precision
If the radio wave sensor radiates radio wave frontward through the toilet seat opening, then the detection precision is improved, but the radio wave may be reflected by the metal member inside the toilet seat
Solution Approach 1:
The patent extracts the radio wave sensor from the toilet seat structure and relocates it to the tank side surface. This separation removes the sensor from the environment where metal members are present, allowing radio waves to be radiated through the toilet seat opening without encountering reflective metal surfaces inside the seat
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
This configuration reduces the likelihood of misdetecting water movement and improves the precision of human body detection, ensuring accurate user movement tracking.
Implementation Method 1
The radio wave sensor detects a human body by radiating a radio wave frontward of the main part
Data Source
AI summary
A toilet apparatus according to an embodiment includes a toilet seat, a main part, a toilet, a tank, and a radio wave sensor. The toilet seat is pivotally supported by the main part to be openable and closable. The toilet is provided under the main part. The main part is placed on the toilet. The tank is provided inside the toilet. Water for washing the toilet is stored in the tank. The radio wave sensor is disposed higher than the tank. The radio wave sensor detects a human body by radiating a radio wave frontward of the main part.