Video Detector Assembly Passive Detection Module False Alarm Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current security systems lack reliable and cost-effective means to enhance real alarm integrity, often resulting in unnecessary police alerts due to insufficient differentiation between false and real alarms, and are limited by dependence on mains power and expensive components.
Innovation Solution
An extended-life video camera system utilizing a video detector assembly with a passive detection module and non-mains power source, capable of selectively activating a video camera module for extended periods, and enabling wireless communication with a control panel and central monitoring station to enhance real alarm integrity through object discrimination based on temperature, size, and movement parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single PIR sensor is used to detect motion, then the system can detect heat-radiating bodies, but false alarms occur due to detection of other effects (air disturbance, heating, pets)
Solution Approach 1:
The patent combines a PIR sensor and a video camera into a single integrated security system. The PIR sensor detects motion and triggers the video camera to capture images, allowing visual verification to confirm whether the detected motion is a real intrusion or a false alarm (e.g., pets, air disturbance). This merging resolves the contradiction by adding verification capability without requiring multiple independent sensors.
Solution Approach 2:
The video camera acts as an intermediary between the PIR sensor and the alarm system. Instead of directly triggering an alarm based on PIR sensor input, the system uses the video camera to capture and review the situation first. This intermediary verification step allows operators to distinguish between real intrusions and false alarms before initiating alarm protocols.
2Reliability
If voice verification is used by operators, then they can listen to sounds in the monitored region, but voice verification is not sufficient to determine what is taking place
Solution Approach 1:
The video camera serves as a visual intermediary that captures images of the monitored region when motion is detected. This visual information is transmitted to the central station where operators can review the actual visual situation, providing definitive evidence of what is occurring (intrusion vs. false alarm) rather than relying on insufficient audio verification.
Solution Approach 2:
The system replaces the mechanical approach of operators physically visiting or using audio devices to verify alarms with an electronic video verification system. The video camera and transmission system provide remote visual verification, eliminating the need for operators to physically intervene or rely on audio alone.
3Duration of action of stationary object
If mains power is used in security systems, then the system can operate continuously, but the system is not truly remote and costs more
Solution Approach 1:
The patent extracts the power supply requirement from the remote security system by using a rechargeable battery that can be periodically recharged. This allows the system to operate independently of mains power at the remote location, achieving true remote operation. The battery can be recharged at the central station or elsewhere, eliminating the need for continuous mains power connection.
Solution Approach 2:
Instead of continuous operation requiring continuous power, the system uses periodic charging of the rechargeable battery. The battery powers the system intermittently and can be recharged periodically at convenient locations. This periodic recharging approach enables remote operation without requiring permanent mains power infrastructure.
4Reliability
If video cameras are added to enhance real alarm integrity, then operators can verify alarms visually, but the system becomes more expensive and complex
Solution Approach 1:
The patent merges the video camera functionality with the existing PIR sensor system into a single integrated unit. The video camera is triggered by the PIR sensor's motion detection, creating a coordinated system where the camera supplements rather than duplicates the sensor functionality. This integration provides visual verification capability while minimizing additional complexity.
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
The system provides reliable, cost-effective, and extended-life video surveillance, enhancing real alarm integrity by minimizing power consumption and false alarms, with a battery life of at least 2 years and communication range up to 1000 meters, allowing for accurate intrusion detection and verification.
Implementation Method 1
a passive detection module (PDM) operatable to selectively activate the video camera module
Implementation Method 2
a non-mains power source capable of powering the VDA for an extended period
Data Source
AI summary
It is disclosed an extended-life video detector assembly (VDA) directable at a viewing region. The VDA includes a video camera module having a normally inactive state, and a passive detection module (PDM) for selective activation of the video camera module. A battery powers the VDA for an extended period of at least two years. The VDA may include a control panel assembly (CPA) positioned within a communication range from the VDA for sending and receiving wireless signals to and from the VDA, and a central monitoring station located remotely from the CPA and communicating with it. Also the VDA includes a recording module, for recording video information. The PDM discriminates movement of an object in the viewing region and consequently activates the video camera module, based on characteristic parameters like temperature, size, movement direction, and movement speed.