BLE Asset Tracking Network for Low-Power Loss Detection
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Solution Overview
Problem
Existing mobile asset tracking technologies are susceptible to jamming, require high operational and infrastructure costs, lack autonomy, and depend on fixed locations or devices with known positions, limiting their flexibility and accuracy.
Innovation Solution
A system using Bluetooth Low Energy (BLE) tracking devices with integrated accelerometers and gyroscopes, coupled to mobile assets, communicates with mobile devices to form a network, refining location through multiple device packet detection, and employs a server for tracking and initial loss detection, enabling mesh networking and autonomous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If satellite tracking (GPS) is used, then position information can be obtained regardless of telecommunication network presence, but operational costs and device costs are relatively high
Solution Approach 1:
The patent combines multiple positioning technologies (GPS, GSM triangulation, and RF tracking) into a hybrid system that leverages the strengths of each. The RF component provides continuous local positioning without network dependency, while GPS and GSM provide broader geographic coverage, creating a complementary multi-technology approach that reduces overall power consumption and cost.
Solution Approach 2:
The tracking device is designed to perform multiple functions using a single integrated system: it can operate via GPS satellites, GSM network triangulation, and standalone RF beaconing. This multi-functional capability allows the device to adapt to different operational environments and select the most energy-efficient positioning method available in each context.
2Loss of information
If GPS and GSM combined tracking is used, then additional movement behavior information can be obtained, but total cost and power consumption are high
Solution Approach 1:
The patent extracts the movement behavior detection function from the main tracking device by utilizing the accelerometer and other sensors already present in the mobile device (smartphone). This separates the complex sensing functions from the tracking device, allowing the tracking device to remain simple while still capturing comprehensive movement behavior data through the mobile device's capabilities.
Solution Approach 2:
The mobile device acts as an intermediary between the tracking device and the server. It receives data from the tracking device's RF beacon, supplements it with its own sensor data (accelerometer, GPS), and forwards the combined information to the server. This intermediary role distributes system complexity across multiple components rather than concentrating it in the tracking device.
3Ease of manufacture
If LBS triangulation is used, then equipment costs are affordable, but position accuracy is poor
Solution Approach 1:
The system performs preliminary positioning using affordable LBS triangulation to establish approximate location, then refines this position using RF beacon detection by nearby mobile devices. This two-stage approach starts with low-cost broad coverage positioning and progressively adds more accurate but resource-intensive methods only when needed, optimizing both cost and accuracy.
Solution Approach 2:
The patent adds a new dimensional layer to positioning by utilizing the spatial distribution of multiple mobile devices running the companion app. Instead of relying solely on network infrastructure triangulation, it creates position estimates based on which mobile devices detect the RF beacon and their known positions, effectively adding a user-device-based positioning dimension that complements traditional LBS methods.
4Device complexity
If RF tracking with mesh network is used, then infrastructure costs are reduced, but position information accuracy is poor and susceptibility to jammers remains
Solution Approach 1:
The patent replaces the traditional RF-based passive beacon system with an active hybrid system that incorporates multiple sensor types (accelerometer, GPS, RF receiver) in the mobile device. This substitution transforms the positioning mechanism from purely signal-based RF triangulation to a multi-modal approach that uses physical motion sensing and satellite positioning to complement RF data, thereby improving accuracy while maintaining low infrastructure requirements.
5Reliability
If hybrid GPS-GSM-RF technology is used, then jammer resistance and network operation capability are improved, but operational costs and energy consumption are high
Solution Approach 1:
The tracking device uses periodic RF beacon transmission at optimized intervals rather than continuous transmission. The beacon is sent at strategic moments when positioning updates are needed, allowing the device to enter low-power states between transmissions. This periodic operation maintains jammer resistance and network capability while significantly reducing average power consumption compared to continuous operation.
Solution Approach 2:
The system applies different operational characteristics to different components based on local conditions. The GPS modem operates at high power only when satellite signals are available and positioning updates are required, while the RF beacon uses lower power for local positioning. The GSM component activates selectively for data transmission. This localized optimization of power usage in each subsystem reduces overall energy consumption while maintaining the reliability benefits of the hybrid approach.
Data Source
AI summary
The present invention relates to a system and a method for tracking mobile assets, in which a tracking device is coupled to the mobile asset, the location thereof being determined by a mobile device entering the operating radius of a wave emitted by the tracking device (and / or vice versa), said mobile device having and running at least one computer program for this purpose. The position of the tracking device is refined by detecting a data packet emitted by more than one mobile device within the operating radius of the tracking device, in which communication is established between the tracking device and a server of said system over a network comprising all of the mobile devices having the computer program for this purpose. Furthermore, the present invention relates to a set of first notices of loss that characterize the action situations of the method according to the invention, and finally a corresponding tracking device.