Inductive Bolt Validation Circuit for Static Guard Lock Detection
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Solution Overview
Problem
Industrial locking switches face challenges in detecting the position of a locking bolt from multiple directions without requiring mechanical reconfiguration or rotation, and existing validation methods interrupt the switch's operation to confirm bolt detection, posing safety hazards.
Innovation Solution
A locking switch design with multiple RFID coils and an inductive sensing circuit that allows detection of a locking tongue from various directions and validates bolt position without actuating the bolt, using a validation circuit that confirms the bolt's state without interrupting the switch's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-direction bolt detection method is used, then the device complexity is reduced, but the adaptability for installation from multiple directions deteriorates
Solution Approach 1:
The inductive sensing circuit is designed to detect the locking bolt from multiple directions (front, rear, left, right) using the same basic sensing mechanism. The circuit can sense the presence of the locking bolt regardless of which direction it approaches from, making the detection system universal and eliminating the need for direction-specific detection mechanisms.
Solution Approach 2:
The patent replaces mechanical reconfiguration or rotation mechanisms with an inductive sensing system that electronically detects the locking bolt's position. Instead of physically reconfiguring the switch to accommodate different installation directions, the inductive sensor detects the bolt's presence through electromagnetic induction, substituting mechanical complexity with electronic sensing.
2Reliability
If validation methods actuate the locking bolt to confirm detection, then the measurement precision is improved, but the safety and operational continuity deteriorate
Solution Approach 1:
The inductive sensing circuit performs preliminary detection of the locking bolt's position before any validation or confirmation actions are taken. The system continuously monitors the bolt's position through electromagnetic induction, allowing validation to occur based on pre-established sensing data rather than requiring actual bolt actuation during the validation process.
Solution Approach 2:
The inductive sensing circuit acts as an intermediary between the locking bolt and the control system. Instead of directly actuating the bolt to validate detection, the inductive sensor provides indirect electromagnetic sensing of the bolt's position, mediating the validation process through field-based detection rather than mechanical interaction.
3Adaptability or versatility
If mechanical reconfiguration or rotation is used to detect bolt position from multiple directions, then the adaptability is improved, but the ease of operation and installation time deteriorate
Solution Approach 1:
The patent replaces mechanical reconfiguration or rotation mechanisms with an inductive sensing system that electronically detects the locking bolt's position. Instead of physically reconfiguring the switch to accommodate different installation directions, the inductive sensor detects the bolt's presence through electromagnetic induction, substituting mechanical complexity with electronic sensing.
Solution Approach 2:
The inductive sensing circuit is designed to detect the locking bolt from multiple directions (front, rear, left, right) using the same basic sensing mechanism. The circuit can sense the presence of the locking bolt regardless of which direction it approaches from, making the detection system universal and eliminating the need for direction-specific detection mechanisms.
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
Enables flexible installation by detecting the locking tongue from multiple directions and validates the locking bolt's position without interrupting the switch's operation, enhancing safety and reliability.
Implementation Method 1
an inductive circuit comprising an inductive coil and a capacitor electrically connected in parallel, wherein the inductive coil is positioned to receive a locking bolt of an industrial locking switch when the locking bolt is transitioned to a lock position
Implementation Method 2
a radio frequency identifier (RFID) tag attached to the locking tongue; and a detection circuitry comprising one or more RFID coils, wherein each of the one or more RFID coils is attached to one of the one or more entry slots
Data Source
AI summary
A system for sensing a position of a locking bolt of an industrial locking switch includes an inductive circuit, a converter, and a master controller. The inductive circuit includes an inductive coil and a capacitor electrically connected in parallel. The inductive coil is positioned to receive a locking bolt of an industrial locking switch when the locking bolt is transitioned to a lock position. The converter is configured to convert a frequency of a current signal on the inductive circuit to a digital frequency value. The master controller is configured to generate a bolt detection signal in response to determining that the digital frequency value changes by an amount equal to or substantially equal to a defined frequency shift corresponding to a frequency shift induced by the inductive coil in response to presence of the locking bolt within the inductive coil's magnetic field.