Safety Switch Pairing Control for Secure Actuator ID Verification
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Solution Overview
Problem
Existing safety switches face reliability issues due to complex initial association procedures between sensor bodies and actuators, which can be exploited for fraudulent use.
Innovation Solution
A simplified initial association method for sensor bodies and actuators, involving a pairing process that allows easy recognition of paired actuators and prevents fraudulent pairing by storing and verifying actuator IDs, while maintaining high reliability through distinct operation modes and secure ID management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex initial association procedure is used between sensor body and actuator, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-storing the actuator ID in the sensor body during manufacturing or initial setup. This allows the association between sensor body and actuator to be established in advance, eliminating the need for complex real-time pairing procedures during operation. The sensor body already contains the reference ID for verification, enabling simple and reliable authentication when the actuator presents its ID.
2Ease of operation
If a simplified initial association procedure is used, then ease of operation is improved, but reliability deteriorates
Solution Approach 1:
The patent implements feedback through a verification mechanism where the sensor body compares the actuator ID presented during operation against the pre-stored reference ID. This feedback loop ensures that even with simplified association procedures, reliability is maintained by continuously verifying that the actuator being operated is the authorized one. The system provides immediate feedback through acceptance or rejection of the actuator ID, preventing fraudulent use.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method ensures reliable pairing without complex procedures, preventing fraudulent use and maintaining high reliability of the safety switch operation.
Implementation Method 1
a wireless circuit for supplying power to a wireless tag (280) on the actuator (250)
Data Source
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AI summary
A safety switch includes a sensor body. The sensor body includes: a setting unit configured to set an operation mode of the safety switch; a detection unit configured to detect an actuator; a storage unit; and a control unit configured to control storage operation of the storage unit for identification information of the actuator. In response to satisfaction of conditions where: the operation mode is set by the setting unit to a pairing mode for associating the sensor body and the actuator with each other; the identification information of the actuator is not stored in the storage unit; and a first actuator is detected by the detection unit, the control unit allows the detection unit to acquire identification information of the first actuator and the storage unit to store the identification information.