TRU Driver Identification for Accurate Wireless Status Handover
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Solution Overview
Problem
Existing systems for providing status information and commands to transport refrigeration units (TRUs) in logistics networks are inadequate when there are last-minute changes in drivers, trucks, or trailers, as they rely on outdated logs of driver locations and mobile phone numbers, leading to incorrect delivery of information.
Innovation Solution
A method involving a driver identification signal sent by a portable device, which uniquely identifies the driver within a predetermined range of the TRU, enabling wireless communication of status information and commands through a portable interface device, authenticated by password or biometric means, and recorded on a remote server for real-time tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If status information is sent via cell network to driver's mobile phone, then driver can receive TRU status information, but the system cannot accommodate last-minute changes in drivers or trailers
Solution Approach 1:
The system uses the driver's own portable device to automatically identify and authenticate them when they approach the TRU. The driver simply needs to have their portable device with them, and the system automatically retrieves their information from the database, eliminating the need for manual driver identification or pre-arranged communication protocols.
Solution Approach 2:
The patent replaces the mechanical/administrative system of tracking driver assignments and manually sending messages with an automated wireless identification system. The portable device automatically transmits the driver's unique identifier to the TRU control unit, which then queries the database and sends status information without human intervention.
2Reliability
If an accurate log of driver locations and TRU associations is maintained, then correct driver receives information, but the system becomes complex to manage frequent driver changes
Solution Approach 1:
The patent introduces a database as an intermediary between the TRU control unit and the driver's portable device. The database stores and manages driver information, TRU associations, and communication preferences, allowing the control unit to reliably deliver information without directly managing complex driver tracking logic.
3Loss of time
If driver identification is automatic via portable device, then correct driver is identified quickly, but additional devices and authentication mechanisms are required
Solution Approach 1:
The patent makes the driver's existing portable device (smartphone, tablet, or other wireless device) serve multiple functions: it acts as both the identification medium and the communication interface for receiving status information and sending commands. This eliminates the need for separate identification badges or cards.
4Productivity
If the system supports multiple drivers and trailers in a fleet, then fleet operations are scalable, but the number of possible driver-trailer combinations increases dramatically
Solution Approach 1:
The patent creates a digital copy of each driver's identification and assignment information in the database. When a driver approaches a TRU, the system retrieves their current assignment information from this digital copy rather than maintaining complex real-time tracking of physical driver-trailer associations. This allows scalable fleet management without proportionally increasing system complexity.
Data Source
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AI summary
A method for wireless communication between a driver and any one of a plurality of transport refrigeration units 3, the method comprising: receiving a driver identification signal at a control unit 8 of one of the transport refrigeration units, the driver identification signal being a wireless signal sent by a portable identification device 7 in the possession of the driver and uniquely identifying the driver, wirelessly transmitting status information of the transport refrigeration unit 3 from the control unit 8 to the driver, via a portable interface device 7 in the possession of the driver, and/or wirelessly receiving commands for operating the transport refrigeration unit 3 from the driver at the control unit 8, via the portable interface device 7 in the possession of the driver