Wireless Tag Motion Sensor for Power-Efficient Removal Detection
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Solution Overview
Problem
Existing wireless location asset tracking systems face challenges in accurately determining tag removal due to power exhaustion and space restrictions, leading to inefficient use of resources and potential errors in location determination.
Innovation Solution
A tracking tag equipped with a processor, motion sensor, transceiver, and tag removal sensor that activates the tag removal sensor only when motion is detected, conserving power and optimizing the tag removal function by transmitting an unattached signal to network sensors if the tag is removed, thus ensuring accurate asset tracking while minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tag removal sensor is constantly activated to ensure accurate detection, then the detection reliability is improved, but the power consumption increases
Solution Approach 1:
The tag removal sensor operates periodically rather than continuously. The motion sensor detects movement and triggers the tag removal sensor only when motion is detected, creating a periodic activation pattern that reduces power consumption while maintaining detection reliability when needed.
Solution Approach 2:
The motion sensor serves as a self-triggering mechanism that automatically activates the tag removal sensor when motion is detected. This self-service approach eliminates the need for continuous monitoring while ensuring the tag removal sensor is activated precisely when removal events are likely to occur.
2Reliability
If additional components are added to detect tag removal, then the detection function is improved, but the device complexity increases
Solution Approach 1:
The motion sensor serves dual purposes: it detects both the movement of the asset and triggers the tag removal detection function. This multi-functionality approach allows the system to detect tag removal without adding dedicated complex components, as the motion sensor's primary function also enables the removal detection capability.
Solution Approach 2:
The patent combines the motion detection function with the tag removal detection trigger function. By merging these functions and using the motion sensor as the activation trigger for the tag removal sensor, the system reduces overall component complexity while maintaining effective tag removal detection.
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 solution allows for efficient and accurate detection of tag removal, optimizing power usage and reducing errors in location determination, enabling longer tag operation and enhanced security monitoring without constant high-power activation of the tag removal sensor.
Implementation Method 1
The motion of the tag is detected by the motion sensor and communicated to the processor
Implementation Method 2
The unattached signal is transmitted from the transceiver of the tag to a plurality of network sensors
Data Source
AI summary
A wireless tracking system and method with a tag removal detection feature is disclosed herein. The system and method utilize a tag attached to an asset which includes a processor, a motion sensor (such as an accelerometer), a transceiver, a tag removal sensor and a power source having a limited supply of power. The tag removal sensor is a closed circuit device which is activated only when the motion sensor detects motion. In this manner, the tag conserves power since the tag is typically only in motion ten percent of the day. If the tag is removed from the asset, the closed circuit is opened, which confirms the removal of the tag from the asset, and an alert is activated by the system.