Active Reflected Wave Detector for Motion Detection
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Solution Overview
Problem
Motion sensors, such as PIR detectors, often trigger false alarms when detecting motion, as they cannot distinguish between human and animal presence or the location of a moving object, leading to unnecessary camera activation and power consumption in battery-powered systems.
Innovation Solution
An apparatus comprising a camera and a processor that uses an active reflected wave detector to determine the presence and type of moving objects, activating the camera only when a predetermined condition is met based on processed wave reflection data, thereby reducing false triggers and conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a motion sensor is used to trigger camera capture, then motion detection coverage is improved, but false triggers increase and power consumption increases
Solution Approach 1:
The system performs preliminary actions by first activating the active reflected wave detector to obtain wave reflection data before triggering the camera. This preliminary detection step filters out false motion triggers, ensuring that the camera only captures images when motion is confirmed to be relevant, thereby reducing unnecessary power consumption while maintaining detection accuracy.
Solution Approach 2:
The active reflected wave detector serves as an intermediary between the motion sensor and the camera. It processes wave reflection data to determine whether detected motion is significant enough to warrant camera activation. This intermediary layer reduces false triggers by providing additional verification before the camera captures images, thus lowering overall power consumption.
2Productivity
If a motion sensor triggers camera capture, then motion detection is activated, but the camera captures unnecessary images consuming power
Solution Approach 1:
The system performs preliminary actions by first activating the active reflected wave detector to obtain wave reflection data before triggering the camera. This preliminary detection step filters out false motion triggers, ensuring that the camera only captures images when motion is confirmed to be relevant, thereby reducing unnecessary power consumption while maintaining detection accuracy.
Solution Approach 2:
The system uses feedback from the active reflected wave detector to control camera activation. The wave reflection data provides feedback about the nature of detected motion, allowing the system to adjust camera behavior accordingly. This feedback mechanism ensures that the camera only captures images when motion is confirmed to be significant, reducing unnecessary power consumption while maintaining responsive detection.
3Reliability
If a PIR detector is used, then heat-radiating body detection is achieved, but the ability to identify object location and type is lost
Solution Approach 1:
The system merges the detection capabilities of multiple sensors: the PIR detector for heat-radiating body detection and the active reflected wave detector for wave reflection measurement. By combining these sensors, the system achieves both reliable motion detection and precise object identification, determining both the presence and location of objects through integrated processing of multiple data types.
Solution Approach 2:
The system implements multi-functionality by using the active reflected wave detector to perform multiple tasks: detecting motion, determining object location, and identifying object characteristics through wave reflection analysis. This universal detector replaces the limited PIR detector, providing comprehensive detection capabilities including both reliability and precision for object identification.
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
Effectively reduces false alarms and conserves power by accurately identifying moving objects and activating the camera only when necessary, improving the efficiency of battery-powered security systems.
Implementation Method 1
measured wave reflection data associated with a second monitoring region that is obtained by an active reflected wave detector
Data Source
AI summary
One embodiment relates to an apparatus for detecting an object in an environment, the apparatus comprising: a camera controllable to switch from a first to a second mode to prepare the camera to capture an image; a processor, wherein the processor is arranged to receive motion detection data associated with a first monitoring region in said environment, and measured wave reflection data associated with a second monitoring region obtained by an active reflected wave detector, wherein the first monitoring region includes at least part of the second monitoring region and extends beyond the second monitoring region in at least one direction. In response to the processor detecting motion in the first monitoring region, the processor is configured to: activate the active reflected wave detector; determine whether a predetermined condition is met; if the condition is met, perform at least one operation related to camera image data.