Image Forming Apparatus Sensor Failure Notification
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Solution Overview
Problem
Image forming apparatuses equipped with human sensors may malfunction, leading to delayed detection of users and increased waiting times, as existing technologies do not effectively address sensor failures, especially when the detection range decreases due to device failures or environmental factors, causing users to manually switch the device from a sleep state to a standby state.
Innovation Solution
An image forming apparatus with a detection unit, operation unit, and notification unit that detects user presence and automatically shifts from a low power state to a higher power state, while providing notifications of sensor failures, ensuring timely repair and minimizing user wait times by automatically switching to standby mode upon user presence detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the image forming apparatus uses a human sensor to automatically return from sleep state, then user convenience is improved and waiting time is reduced, but the system becomes vulnerable to sensor malfunctions that go undetected
Solution Approach 1:
The system implements feedback by monitoring whether the human sensor is functioning properly. When the sensor fails to detect a user who approaches the device, the system recognizes this as a malfunction condition and switches to alternative operation modes, ensuring reliable detection of sensor failures while maintaining automatic return functionality when the sensor is working.
Solution Approach 2:
The system performs preliminary actions by proactively detecting sensor malfunctions before they significantly impact user experience. The control unit continuously monitors sensor performance and prepares alternative return-from-sleep mechanisms in advance, so when a malfunction is detected, the system can immediately switch modes without disrupting normal operation.
2Reliability
If the human sensor detection range decreases due to device failure or environmental factors, then the sensor may fail to detect users, but the system lacks the capability to identify this degradation
Solution Approach 1:
The control unit establishes a feedback mechanism that monitors the detection capability of the human sensor. When the sensor fails to detect a user within its expected range, the system receives feedback indicating potential malfunction and responds by switching to manual return-from-sleep operation, thereby preserving detection reliability information.
3Loss of energy
If the system relies solely on the human sensor for return-from-sleep operation, then energy saving is optimized, but the system becomes non-operational when the sensor malfunctions
Solution Approach 1:
The system dynamically changes its operational parameters based on sensor status. When the human sensor is functioning normally, the system operates in automatic return-from-sleep mode to optimize energy saving. When malfunction is detected, the system changes parameters to enable manual return-from-sleep operation through the operation unit, ensuring continuous productivity while adapting to sensor conditions.
Data Source
AI summary
An image forming apparatus is provided that is capable of returning from a sleep state in response to detection of a user or upon receipt of an input, wherein notification of failure to detect a user is provided if the image forming apparatus returns from a sleep state based on receipt of an input for more than a predetermined number of times.