Battery-Powered Security Sensor Mode Switching
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Solution Overview
Problem
Battery-powered security sensor systems face premature shutdown due to high power consumption during object detection operations, leading to delayed battery replacement and potential system failure.
Innovation Solution
The system switches from a normal mode to a suppression mode when a low battery state is detected, reducing power consumption by adjusting object detection operations, such as lengthening sampling periods, reducing detection beam power, and disabling non-essential functions like monitoring and visible displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the security sensor system operates in normal mode with full object detection functions, then detection performance is maintained, but battery power consumption is high causing premature shutdown
Solution Approach 1:
The patent implements dynamic operation mode switching between normal mode and suppression mode based on battery voltage levels. The controller automatically transitions the object sensor from continuous operation in normal mode to reduced operation in suppression mode when low battery is detected, optimizing the balance between detection performance and power consumption throughout the battery lifecycle
Solution Approach 2:
The patent changes operational parameters of the object sensor based on battery status. In suppression mode, parameters such as detection frequency, sampling rate, and beam power are adjusted to reduce power consumption while maintaining sufficient detection capability, directly addressing the contradiction between performance and energy use
2Loss of time
If transmission of low battery state notification is controlled to suppress power consumption, then battery life is extended, but the system continues normal object detection operation consuming substantial battery power
Solution Approach 1:
The patent extracts the object detection operation from continuous full-function mode and separates it into normal mode and suppression mode. By removing unnecessary detection functions in suppression mode, the system significantly reduces power consumption while maintaining the ability to perform critical security functions, thereby extending effective battery life
Solution Approach 2:
The patent performs preliminary action by detecting low battery state in advance and proactively switching to suppression mode before complete battery depletion occurs. This preliminary mode switching prevents premature system shutdown and allows the system to continue operating with reduced functions until battery replacement is feasible
3Duration of action of stationary object
If the system switches to suppression mode to reduce power consumption, then battery life is extended, but detection operations are reduced
Solution Approach 1:
The patent applies partial action by implementing suppression mode that performs only essential detection functions at reduced frequency. Rather than completely disabling detection operations, the system maintains sufficient detection capability for security purposes while reducing overall operation frequency to conserve battery power, achieving an optimal balance between productivity and duration
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 approach effectively postpones system shutdown by conserving battery power without significantly impairing detection performance, reducing the likelihood of false alarms or missed alerts.
Implementation Method 1
there is known an AIR (active infrared ray) sensor and a PIR (passive infrared ray) sensor which detect an object through a detection beam such as an infrared ray
Implementation Method 2
a low battery detector to detect a reduction in a voltage of the battery
Data Source
AI summary
A security sensor system is provided which allows the stopping of the device due to the end of a battery life to be postponed by suppressing battery power consumption, which is caused due to an object detection operation of the security sensor system, after a low battery state is detected. The security sensor system is powered by a battery. When a low battery detector detects a reduction in the voltage of the battery, an object detection operation of the security sensor system is switched from a normal mode to a suppression mode. Consumption of the battery in the suppression mode is suppressed.