Loss Recognition System With Self-Latching Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing loss recognition systems face challenges in reliably triggering and terminating alarms, particularly due to electromagnetic interference and the need for more secure and effective deterrents against theft.
Innovation Solution
The system employs a self-latching circuit with DC isolation to enhance alarm reliability, using a separate energy source for alarm transmitters and incorporating electrodes that deliver a high-voltage pulse to deter unauthorized access, along with a key-activated OFF switch for authorized termination of alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shared power supply is used for control circuit and alarm transmitter, then device complexity is reduced, but electromagnetic interference affects alarm reliability
Solution Approach 1:
The power supply system is segmented into two independent circuits: a first power supply circuit for the control circuit and a second power supply circuit for the alarm transmitter. This segmentation isolates electromagnetic interference between circuits while maintaining functional independence, resolving the contradiction between reliability and complexity.
Solution Approach 2:
A self-latching circuit is introduced as an intermediary component between the control circuit and alarm transmitter. This intermediary receives activation signals from the control circuit and independently triggers the alarm transmitter, ensuring reliable alarm activation while maintaining circuit isolation.
2Object-affected harmful factors
If alarm transmitter is continuously active, then theft deterrence is enhanced, but energy consumption increases
Solution Approach 1:
The alarm transmitter operates periodically rather than continuously - it remains inactive during normal operation and activates only when triggered by the self-latching circuit upon detecting unauthorized access. This periodic operation provides strong theft deterrence when needed while minimizing energy consumption during normal use.
Solution Approach 2:
The self-latching circuit automatically activates the alarm transmitter when triggered, eliminating the need for continuous monitoring or manual activation. The system serves itself by maintaining readiness state with minimal energy and automatically responding to threats, balancing deterrence effect with energy efficiency.
3Object-affected harmful factors
If high voltage pulse is applied to electrodes, then theft deterrence is improved, but safety risk increases
Solution Approach 1:
The system applies preliminary warning through alarm signals (acoustic, visual, or vibratory) before delivering the high-voltage electric shock. This preliminary anti-action gives unauthorized persons a chance to retreat voluntarily, reducing the need for actual electric shock application and thereby minimizing safety risks while maintaining anti-theft effectiveness.
Solution Approach 2:
The potentially harmful high-voltage electric shock is converted into a beneficial anti-theft deterrent by controlling its application to only activated states. The harm is transformed into a controlled safety feature where the electric shock serves as a last-resort deterrent rather than a continuous hazard, benefiting from the self-latching circuit's precise activation control.
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 configuration reduces electromagnetic interference, ensures reliable alarm triggering, and effectively deters theft by using a high-voltage pulse, while allowing authorized individuals to safely terminate alarms.
Implementation Method 1
The battery voltage or the rechargeable battery voltage is electronically switched on and off at a prescribable speed in order to generate, through induction, a high voltage in the kilovolt range at the electrodes in the alarm case.
Data Source
AI summary
A loss recognition system including a transceiver which is prepared to send an interrogation signal to a transponder and to receive from the transponder a response signal. A data processing apparatus detects the presence of the response signal and the signal strength thereof and, in the absence of the response signal or in the case of undershooting of the signal strength of the response signal below a predetermined threshold value, automatically outputting an activation pulse for activating an alarm transmitter associated with the response signal. The transponder is associated with a predetermined object of value and is attached thereto in a use state. An alarm transmitter is provided on the transceiver and/or on the object of value associated with the respective transponder. At least one alarm transmitter is activated by a self-latching circuit which is activated as soon as an activation pulse associated with the alarm transmitter is output.