Liftgate Remote Control Automatic Coupling via Authorization Transfer
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Solution Overview
Problem
The existing tail lift systems require complex configuration and risk incorrect coupling with adjacent vehicles when using remote control units, making operation inconvenient and prone to errors.
Innovation Solution
A test device in the driver's cab automatically transfers authorization information to the remote control unit, ensuring only authorized units can couple with the control device, preventing incorrect couplings and allowing multiple operators to use the same control unit across different vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual control units are permanently assigned and coupled at the factory, then coupling reliability is improved, but device complexity and ease of operation deteriorate due to extensive configuration measures
Solution Approach 1:
The control device is pre-configured with authorization information (identification data, encryption keys) during factory setup. This preliminary action enables the control device to automatically recognize and couple with authorized manual control units without requiring extensive configuration measures during actual operation, thus resolving the contradiction between coupling reliability and ease of operation
Solution Approach 2:
The system enables automatic coupling where the manual control unit and control device self-identify and establish communication through wireless signal exchange. The control device autonomously verifies authorization information and initiates coupling without operator intervention, eliminating the need for manual configuration measures while ensuring reliable coupling
2Reliability
If manual control units are permanently assigned to specific vehicles, then coupling reliability is improved, but adaptability deteriorates as operators cannot use the same control unit across different vehicles
Solution Approach 1:
The control device is designed with universal authorization verification capability, storing authorization information that allows it to recognize multiple different manual control units. Each control unit contains unique identification information, but the control device can verify and couple with any authorized unit, enabling operators to use the same control unit across different vehicles while maintaining coupling reliability through cryptographic verification
3Reliability
If extensive configuration measures are performed for coupling, then coupling reliability is improved, but loss of time increases due to complex setup procedures
Solution Approach 1:
All configuration measures including authorization information storage, identification data registration, and encryption key setup are performed once during factory configuration. This preliminary action eliminates the need for repeated configuration during each coupling operation, reducing configuration time to near zero while maintaining coupling reliability through pre-established authorization verification
Solution Approach 2:
The coupling process is automated through self-service mechanisms where the manual control unit and control device automatically exchange identification information, verify authorization, and establish coupling without operator intervention. This eliminates time-consuming manual configuration steps while ensuring reliable coupling through automated cryptographic verification
4Ease of operation
If simple wireless coupling is implemented, then ease of operation is improved, but reliability deteriorates due to risk of incorrect coupling with adjacent vehicles
Solution Approach 1:
Authorization information acts as an intermediary verification layer between the manual control unit and control device. Before coupling is established, the control device verifies the identification information and authorization data exchanged via wireless communication, ensuring that only authorized units can couple. This intermediary verification maintains coupling simplicity while preventing incorrect coupling with adjacent vehicles
Solution Approach 2:
The system implements feedback through authorization verification where the control device checks the identification information transmitted by the manual control unit against stored authorization data. This feedback mechanism confirms whether the control unit is authorized before allowing coupling, ensuring coupling accuracy while maintaining operational simplicity through automated verification
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a liftgate (2) for a motor vehicle, comprising a platform (6) and a remote control (40) for remote control of the control unit (26), characterized in that a test device (60) is provided in the area of the driver's cab (32) of the motor vehicle, which is designed to determine whether a hand-held control unit (42) is in the vicinity of the test device (60), and that common authorization information, in particular factory-installed, can be stored in the test device (60) and in the control unit (26), and that the test device (60) and the hand-held control unit (42) interact in such a way that this authorization information is automatically transferred from the test device (60) to the hand-held control unit (42) when the hand-held control unit (42) is in the vicinity of the test device (60).and that the hand-held control unit (42) is configured to wirelessly transmit the authorization information and an identification information individualizing the hand-held control unit (42) to the transmitter/receiver unit (44) of the control device (26), and that the control device (26) is configured to verify whether the wirelessly transmitted authorization information matches the authorization information stored on it, and that in this case the control device (26) automatically couples the transmitter/receiver unit (44) with the hand-held control unit (42) such that the hand-held control unit (42) is considered a device authorized to perform remote control operations.