Abnormality Notification Control Using Operator Position Feedback
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Solution Overview
Problem
Existing systems fail to efficiently manage equipment irregularities by preventing unnecessary movement of operators to equipment that is already being addressed by another operator, leading to decreased work efficiency.
Innovation Solution
An abnormality notification system that includes a notification server and operator terminals, which detects equipment irregularities, alerts operators, and cancels notifications for operators who are not needed at the affected equipment, using position information to identify the responding operator and transmit cancellation notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an irregularity notification is transmitted to all terminal devices when equipment irregularity is detected, then all users are alerted to the irregularity, but unnecessary movement of operators to equipment already being addressed occurs
Solution Approach 1:
The system continuously monitors position information of operators and provides feedback to determine whether to cancel notifications. When an operator is detected to be moving toward the irregular equipment, the system cancels notifications to other operators, preventing unnecessary movement while ensuring reliable notification to the responding operator.
Solution Approach 2:
The notification state is made dynamic rather than static. The system can transition notification status from active to canceled based on real-time operator position data. This dynamic adjustment allows the system to adapt to changing situations, maintaining notification reliability for needed operators while eliminating unnecessary notifications that reduce productivity.
2Productivity
If position information is continuously monitored to detect moving users, then unnecessary operator movement is prevented, but system complexity increases
Solution Approach 1:
The notification server performs multiple functions: it manages irregularity notifications, monitors position information, detects operator movement, and determines notification cancellation. By consolidating these functions in a single server, the system achieves high productivity through intelligent notification management while avoiding the complexity of distributed position monitoring across multiple devices.
Solution Approach 2:
The notification server acts as an intermediary that centralizes the processing of position information and notification management. Instead of each terminal device independently monitoring positions and managing notifications, the server mediates between position data sources and notification recipients, simplifying the overall system architecture while enabling efficient notification control.
3Productivity
If cancellation notification is transmitted to part or all terminal devices when moving user is detected, then unnecessary operator movement is reduced, but information transmission overhead increases
Solution Approach 1:
The system transmits cancellation notifications proactively when operator movement toward irregular equipment is detected, before other operators would otherwise move to the equipment. This preliminary action prevents unnecessary movement and information confusion, ensuring that only the responding operator receives and acts on the irregularity notification, thereby improving productivity without excessive information overhead.
Data Source
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AI summary
An abnormality notification device for alerting an irregularity in equipment installed in an environment to users, including: a communication interface performing data communication with terminal devices respectively associated with the users; a controller controlling the communication interface; a state information obtainer acquiring state information indicating a state of the equipment; and a position information obtainer acquiring position information indicating a position of each user in the environment, wherein the controller: upon specifying that the equipment is in an irregular state based on the state information, transmits an irregularity notification, indicating that the equipment is in the irregular state, to the terminal devices; then detects a moving user to the irregular equipment based on the position information; and when the moving user is detected, transmits a cancellation notification indicating cancellation of the irregularity notification to a part or all of the terminal devices to which the irregularity notification is transmitted.