Interlock Safety Control Using Operator Readiness Verification
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Solution Overview
Problem
Many injuries associated with powered systems, such as machinery and vehicles, are caused by operator error due to inadequate safety training and unfamiliarity with safety procedures, highlighting a need for improved safety measures to ensure operator readiness before system operation.
Innovation Solution
A safety system comprising an interlock device and a control system that wirelessly communicates with an access device, disabling or enabling the powered system based on the user's proximity and answers to safety questions, ensuring proper training and familiarity before allowing operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If self-diagnostic tests are implemented before operation, then operational safety is improved, but operator error due to inadequate safety training remains a problem
Solution Approach 1:
The system performs preliminary safety verification by requiring operators to answer safety questions through a mobile device before the powered system is enabled. This preliminary action ensures operators demonstrate knowledge of safety procedures before operation begins, addressing the root cause of operator error rather than just detecting operational faults.
Solution Approach 2:
The system provides immediate feedback to operators by evaluating their answers to safety questions and only allowing system activation when safety knowledge requirements are met. This feedback mechanism ensures operators understand safety procedures before operation, reducing operator error while maintaining operational safety.
2Reliability
If safety questions are required before operation, then operator readiness is improved, but system complexity increases
Solution Approach 1:
The system uses a mobile device as an intermediary to deliver and collect safety questions and answers. This approach avoids the need for complex integrated safety training systems within the powered system itself, reducing overall system complexity while still verifying operator readiness through the intermediary mobile platform.
Solution Approach 2:
The system replaces complex mechanical or electronic safety training systems with a simplified digital questionnaire delivered through a mobile device. This substitution uses software-based verification instead of hardware-based training systems, reducing mechanical and electronic complexity while maintaining operator readiness verification.
Data Source
AI summary
Systems and associated methods for selectively enabling and disabling a powered system include an interlock device and a control system. The interlock device may enable or disable operation of the powered system. The control system may disable operation of the powered system with the interlock device, receive at least one answer to at least one question from a user of the access device, and enable operation of the powered system with the interlock device based on the at least one answer meeting a predetermined criteria. In some cases, the control system enables or disables operation of the powered system based on a distance between an access device and the interlock device, based on a status of the powered system after enabling operation, or based on a communication status of the access device after enabling operation of the powered system.