Mobile Target Locator with RF Wake-Up and Solar Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tracking devices face energy consumption issues due to constant operation and limited geographic coverage, as well as impractical power usage when relying on WiFi or cellular networks for location tracking.
Innovation Solution
A mobile target locator system combining an RF receiver, GPS locator, and cellular transmitter, with the ability to switch between reduced and normal power states, using a rechargeable battery and capacitor for extended operation, and solar charging for power replenishment, allowing for efficient location information transmission over a cell phone network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tracking device operates continuously to maintain location tracking, then the location information can be obtained in real-time, but the energy consumption increases rapidly causing the battery to run out
Solution Approach 1:
The tracking device operates in periodic cycles, alternating between active tracking mode and low-power sleep mode. The device activates GPS and cellular transmission only when needed to send location updates, rather than operating continuously. This periodic operation significantly reduces energy consumption while maintaining functional reliability for location tracking.
Solution Approach 2:
The device dynamically adjusts its operational state based on requirements. It transitions between different power states (active and sleep modes) and adjusts transmission frequency based on movement detection and battery status, optimizing the balance between tracking reliability and energy conservation.
2Use of energy by moving object
If the tracking device uses WiFi network for location transmission, then energy consumption is reduced, but the device can only work within the WiFi network coverage area
Solution Approach 1:
The tracking device is designed with multi-functionality to operate across different communication networks. It can switch between WiFi networks for local/indoor tracking and cellular networks for wide-area/outdoor tracking. This universal compatibility allows the device to maintain low power consumption characteristics while expanding its operational geographic coverage beyond single-network limitations.
3Adaptability or versatility
If the tracking device uses cellular communication to transmit location information, then geographic coverage is extended, but the power consumption becomes impractical for devices with limited battery power
Solution Approach 1:
Cellular transmissions are performed periodically rather than continuously. The device sends location updates at intervals triggered by movement detection or predefined time schedules, significantly reducing the frequency and total energy consumption of cellular transmissions while maintaining wide geographic coverage capability.
Solution Approach 2:
The device incorporates motion sensors and GPS to autonomously determine when location updates are necessary. It self-regulates transmission frequency based on whether the tracked object is moving or stationary, avoiding unnecessary cellular transmissions and conserving battery power while maintaining coverage effectiveness.
4Volume of moving object
If the tracking device size is reduced for portability, then the device becomes more practical, but the transmitter power must be reduced limiting communication range
Solution Approach 1:
The tracking device leverages existing cellular network infrastructure (cell towers) as intermediaries to extend communication range. Instead of relying on high-power built-in transmitters, the device uses low-power cellular modems that communicate with distant towers, achieving kilometers of range despite the device's compact size and low transmitter power.
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
Enables long-term operation with minimal energy consumption and extended geographic coverage by activating GPS and cellular transmission only when necessary, ensuring reliable tracking without frequent battery replacement.
Implementation Method 1
a solar cell equipped in a device can be used to recharge the battery
Data Source
AI summary
The present invention herein provides apparatus and method, allowing a user to acquire a target location wherever the target is with a target mobile locator. The target mobile locator includes a RF receiver, a transmitter, a GPS locator and a circuit. After receiving “wake-up” signal from the user, GPS locator and/or transmitter can be activated and the target location is sent back to the user. Prior to receiving the wakeup signal, at least one of the GPS locator and the transmitter are either energy reduced state or off state such that the consumption of the energy is minimized in the locator. Therefore, the locator is active for long periods of time. Optionally, a battery can be recharged using, for example, a solar cell under the sun.