TRU Driver Identification Link for Reliable Wireless Status Control
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Solution Overview
Problem
Existing systems for providing status information and commands to transport refrigeration units (TRUs) are inadequate when there are last-minute changes in drivers, trucks, or trailers, as they rely on accurate and up-to-date logs of driver locations and mobile phone numbers, which are often not feasible in complex logistics fleets.
Innovation Solution
A method involving a driver identification signal sent by a portable device, uniquely identifying the driver, allows for wireless communication of status information and commands between the driver and the TRU, using a control unit, portable interface device, and optionally a remote server, ensuring accurate delivery of information and commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If status information is sent via cell network to driver's mobile phone, then driver can receive TRU status information, but the system cannot handle last-minute changes in driver responsibility due to reliance on accurate logs of driver locations and phone numbers
Solution Approach 1:
The patent introduces a portable identification device as an intermediary between the driver and the TRU system. This device contains a unique identifier that the TRU control unit can read directly, eliminating the need for complex cell network messaging and external log databases. The intermediary device enables reliable driver identification while simplifying the overall system architecture.
Solution Approach 2:
The patent uses a portable identification device that carries a copy of the driver's unique identifier. Instead of accessing complex centralized logs and databases to verify driver identity, the TRU system reads the identifier directly from the portable device, which is a simplified copy of the driver's authentication information. This copying approach reduces system complexity while maintaining reliability.
2Adaptability or versatility
If a centralized log/database system is used to track driver locations and TRU assignments, then information can be managed centrally, but the system becomes complex and cannot adapt to frequent driver changes
Solution Approach 1:
The patent extracts the driver identification function from the complex centralized log database system and places it in a simple portable identification device carried by the driver. This extraction removes the need for complex tracking systems while maintaining the ability to adapt to driver changes, as the identification information travels with the driver rather than being stored in a centralized system.
Solution Approach 2:
The portable identification device enables the driver to self-identify to the TRU system without requiring complex centralized verification. The driver simply presents the portable device, and the TRU control unit reads the identifier directly, allowing the system to adapt to driver changes automatically without manual log updates or complex database queries.
3Loss of information
If mobile phone numbers and driver locations are tracked accurately, then correct information delivery is possible, but this requires maintaining up-to-date logs that are not feasible in complex logistics fleets
Solution Approach 1:
The portable identification device serves as an intermediary that carries the driver's identification information directly to the TRU system. This eliminates the need for complex tracking of driver locations and phone numbers, as the identification is transferred directly through the portable device, ensuring accurate information delivery without complex tracking infrastructure.
Data Source
AI summary
A method for wireless communication between a driver and any one of a plurality of transport refrigeration units 3, the method including 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.