Heated Child Test Dummy for Infrared Passenger Detection Validation
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Solution Overview
Problem
Existing child detection systems in vehicles lack an effective evaluation method to verify their ability to detect the presence or absence of a child by detecting body heat, as they primarily rely on motion detection using ultrasonic or radar sensors, with no system available to evaluate body heat detection capability.
Innovation Solution
A test dummy is developed with a reservoir, tube unit, heating unit, and pump to simulate body heat by circulating heated fluid through a dummy body, mimicking a child's shape, and includes a control unit for temperature management and infrared ray detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a motion detection method using ultrasonic or radar sensors is used to detect the presence of a child, then the detection system can identify child presence through motion, but the system cannot evaluate body heat detection capability
Solution Approach 1:
The patent creates a test dummy that copies the thermal radiation characteristics of a human child by circulating heated fluid through tubes embedded in the dummy's body. This allows the dummy to emit infrared radiation similar to a real child, enabling evaluation of body heat detection systems without requiring a actual child or motion detection methods.
2Measurement precision
If the evaluation system uses a dummy that imitates child motion, then the child detection system can be evaluated for motion detection, but the system cannot evaluate body heat detection capability
Solution Approach 1:
The patent changes the evaluation parameter from motion characteristics to thermal radiation characteristics. By controlling the fluid temperature in the dummy's circulatory system, the dummy can emit infrared radiation at different temperature levels, enabling precise evaluation of body heat detection capability rather than motion detection capability.
3Device complexity
If no specialized test dummy for body heat detection is provided, then the detection system structure remains simple, but the evaluation of body heat detection capability is impossible
Solution Approach 1:
The patent introduces a fluid circulation system as an intermediary between the heat source and the dummy's body structure. The heated fluid circulates through tubes embedded in the dummy, acting as a mediator that transfers thermal energy to the dummy's exterior surfaces, enabling realistic infrared radiation emission without requiring complex internal heating elements throughout the entire dummy structure.
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
Enables effective evaluation of child detection systems by simulating body heat, ensuring accurate detection of a child's presence or absence using infrared rays, thereby improving the reliability of such systems.
Implementation Method 1
a heating unit configured to heat the fluid
Implementation Method 2
a pump configured to provide power for moving the fluid circulating through the tube unit
Implementation Method 3
a tube unit having a flow path through which the fluid stored in the reservoir circulates
Data Source
AI summary
Disclosed is a test dummy including: a dummy body, a reservoir fixed to the dummy body and having an internal space for storing a fluid, a tube unit having a flow path through which the fluid stored in the reservoir circulates, and a heating unit configured to heat the fluid.