People Detector Non-Warning Area Configuration for Thermal False Positives
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Solution Overview
Problem
Current people detection systems face inaccuracies due to non-human heating objects, leading to inefficient control of space equipment, such as prolonged operation of air-conditioning systems, as they misinterpret retained heat from objects like projectors as human presence.
Innovation Solution
A setting system and method that includes an analysis module and human-machine interface to identify and exclude non-human heating objects from the detection range of people detectors, improving detection efficiency and accuracy by presetting non-warning areas around such objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If people detectors detect thermal images to determine human presence, then the system can automatically control space equipment, but non-human heating objects cause false detection and reduce detection accuracy
Solution Approach 1:
The detection area is divided into multiple regions, with each region independently configured to exclude non-human heating objects. The system segments the thermal image into multiple detectable areas, allowing selective exclusion of regions containing heating objects like projectors or water heaters while maintaining detection in other areas.
Solution Approach 2:
Different regions of the detection area are assigned different properties - some regions are configured as warning areas for human detection while others are set as non-warning areas where heating objects are excluded. This allows the system to treat different spatial locations with different detection sensitivities based on local characteristics.
2Productivity
If the system controls equipment based on PD detection results, then automation efficiency is improved, but heating objects cause unnecessary equipment operation and power waste
Solution Approach 1:
The system pre-configures non-warning areas to exclude known heating object locations before detection begins. By establishing these exclusion zones in advance, the system prevents false detection of heating objects as humans, thereby avoiding unnecessary activation of air-conditioning or lighting equipment and eliminating associated energy waste.
3Area of stationary object
If multiple areas are monitored by PDs, then comprehensive space coverage is achieved, but detection accuracy is reduced when heating objects are present in monitored areas
Solution Approach 1:
The comprehensive monitored space is segmented into multiple sub-areas, each with independent detection settings. Regions containing heating objects are identified and configured as non-warning areas, while other regions maintain normal human detection functionality. This allows the system to maintain broad spatial coverage while preserving detection accuracy in areas not affected by heating objects.
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
Enhances the detection accuracy and efficiency of people detectors, reducing unnecessary power consumption by correctly distinguishing between human presence and non-human heat sources, thereby optimizing the operation of space equipment.
Implementation Method 1
the PDs detect thermal images of the space, and determine whether there is a person in the space or not according to the thermal images
Data Source
AI summary
A system for setting non-warning area of people detector including an analysis module, a human-machine interface (HMI) and several people detectors (PDs) are disclosed. The PDs are arranged in a physical space and respectively corresponding to multiple areas to be monitored. The HMI displays thermal image records detected by the PDs, and receives external operation to trigger the analysis module. The triggered analysis module performs a setting action for setting a non-warning area of the multiple areas. The analysis module transmits information related to the set non-warning area to a corresponding one of the PDs for adjusting parameters of the corresponding PD after finishing the setting action. Accordingly, the adjusted PD excludes the non-warning area from its detecting range, whereby improving its detecting efficiency and accuracy.