Object Detection Sensor Threshold Control for Image Forming Apparatus
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Solution Overview
Problem
Existing image forming apparatuses face challenges in optimally controlling power supply based on the distance of an object detected by sensors, leading to inefficient recovery from power-saving states and inconsistent user notification.
Innovation Solution
The implementation of an object detection sensor with dual detection functions, allowing for separate threshold settings to differentiate between detection at varying distances, enabling controlled power supply management and user notification based on detection intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the sensor threshold is lowered to detect objects at farther distances, then detection range is improved, but false detection increases when objects pass in front of the apparatus
Solution Approach 1:
The detection space is segmented into multiple regions (first detection region at farther distance and second detection region at closer distance) based on distance from the apparatus. Each region has its own threshold setting, allowing the system to detect objects at various distances without false positives. The sensor distinguishes between objects in different spatial zones and applies appropriate response strategies for each zone.
2Reliability
If the sensor threshold is raised to avoid false detection, then reliability is improved, but detection capability at farther distances deteriorates
Solution Approach 1:
Different detection thresholds are applied to different spatial regions. The first threshold (lower sensitivity) is applied to the first detection region at farther distance, while the second threshold (higher sensitivity) is applied to the second detection region at closer distance. This local differentiation allows the system to maintain appropriate detection sensitivity for each region's specific requirements.
3Speed
If the apparatus recovers from power-saving state upon detecting any object, then responsiveness is improved, but power consumption increases due to unnecessary recovery
Solution Approach 1:
The system dynamically adjusts its response based on the detected region. When an object is detected in the first detection region (farther distance), the apparatus performs a first response (notification only). When an object is detected in the second detection region (closer distance), the apparatus performs a second response (full recovery from power-saving state). This dynamic response strategy optimizes both responsiveness and power consumption.
Data Source
AI summary
When detection intensity by an object detection sensor is larger than a first threshold, a user is notified that the object detection sensor has detected an object. When detection intensity by the object detection sensor is larger than a second threshold which is larger than the first threshold, an image forming apparatus is recovered to a state capable of executing a function the image forming apparatus.