User Input Detection Timing for Human Sensor Power-Operability Balance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic apparatuses with human sensors set to OFF status during user approach maintain long detection periods, leading to low operability and high power consumption.
Innovation Solution
A controller adjusts the detection period of user operations based on the status of the human sensor, setting a shorter period when the sensor is OFF and a longer period when it is ON, thereby optimizing power consumption and operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the reference period of the driving signal is set to be long, then power consumption is reduced, but operability deteriorates when the human sensor is in OFF status
Solution Approach 1:
The patent applies dynamics by making the detection period adjustable rather than fixed. The controller dynamically changes the period between driving signals based on the human sensor status: using a longer period when the sensor is ON to save power, and a shorter period when the sensor is OFF to improve operability. This dynamic adjustment resolves the contradiction between power consumption and operability.
Solution Approach 2:
The patent changes the temporal parameter (detection period) of the driving signal based on sensor status. When the human sensor detects no human or is in OFF status, the controller shortens the period to improve responsiveness. When the human sensor is ON, the controller extends the period to reduce power consumption. This parameter change strategy directly addresses the technical contradiction.
2Use of energy by moving object
If the human sensor is set to OFF status to save power, then power consumption is reduced, but detection responsiveness deteriorates
Solution Approach 1:
The system dynamically adjusts the detection period based on the human sensor status. When the sensor is OFF or detects no human, the controller shortens the detection period to maintain responsiveness. When the sensor is ON and detects a human, the controller extends the period to save power. This dynamic behavior resolves the contradiction between power savings and detection responsiveness.
Solution Approach 2:
The patent changes the time parameter of the driving signal based on sensor status. By shortening the period when the sensor is OFF and extending it when the sensor is ON, the system optimizes both power consumption and detection responsiveness, resolving the technical contradiction between these two parameters.
Data Source
AI summary
An electronic apparatus includes a human sensor and a controller. The controller is configured to set a period of detection timings of a user operation to a predetermined input device and turn on/off the human sensor. Further, the controller (a) sets as the period a reference period if the human sensor is in an ON status and a human is not detected by the human sensor, and (b) sets as the period a period shorter than the reference period if the human sensor is in an OFF status.