Antitheft Apparatus for Electric Wheelchair with Wireless History Retrieval
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Solution Overview
Problem
Conventional antitheft systems for equipment with prime movers require a reading device to be connected to the equipment to retrieve operating history, which is cumbersome, especially when multiple operators share the equipment, making it difficult to acquire individual operating histories.
Innovation Solution
An antitheft apparatus that includes a prime mover controller storing operating history and an authenticator that transmits this history to an electronic key when the key's ID information matches authentication ID information, allowing easy retrieval of operating history via wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a reading device is connected to the equipment controller to retrieve operating history, then the operating history can be acquired, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The operating history is preliminarily copied to the electronic key during the authentication process. This preliminary action ensures that the history is already available on the key when needed, eliminating the need for time-consuming connections to the equipment controller later.
Solution Approach 2:
The electronic key serves as an intermediary device that stores and transfers operating history between the equipment controller and the user. This mediator enables easy retrieval without direct connection to the controller, solving both the information access and time loss problems.
2Loss of information
If a reading device is connected to the equipment controller, then operating history can be retrieved, but the process becomes complex and inconvenient
Solution Approach 1:
The electronic key automatically receives and stores the operating history during the authentication process without requiring user intervention to connect reading devices. The system serves itself by integrating the history transfer into the existing key authentication workflow.
Solution Approach 2:
The electronic key acts as a portable intermediary that simplifies the operation by storing history locally, allowing users to access information without complex connections to the equipment controller.
3Adaptability or versatility
If the equipment is shared by multiple operators, then resource utilization improves, but it becomes difficult to acquire individual operating histories
Solution Approach 1:
The operating history is segmented by operator ID, with each operator's history stored separately in the electronic key. This segmentation enables multiple operators to share the equipment while maintaining distinct, traceable individual histories.
Solution Approach 2:
The system creates separate copies of operating history for each operator in their respective electronic keys. This copying mechanism preserves individual records even when the equipment is shared, allowing easy acquisition of any operator's specific history.
Data Source
AI summary
In an apparatus for preventing theft of equipment (electric wheelchair) having a prime mover (electric motor), a prime mover controller, and an authenticator that acquires ID information from an electronic key when the key is brought close thereto by an operator, determines whether the acquired ID information corresponds with authentication ID information, and permits the controller to start the prime mover when the acquired ID information is determined to correspond with authentication ID information, the controller stores operating history of the equipment, and the authenticator acquires the history from the controller when the key is brought close thereto and transmits the acquired history to the key when the key is brought close thereto, thereby making it easy to acquire the operating history of the equipment.