Context-Aware Sensor Activation for State-Change Content Presentation
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Solution Overview
Problem
Electronic devices with sensors consume more power than necessary if not managed properly.
Innovation Solution
Implement a system where sensors operate in a low-power mode until a state change is detected, switching to a high-power mode to gather additional contextual information and present content accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors continuously monitor location and activity to detect state changes, then the responsiveness and accuracy of content presentation is improved, but power consumption increases
Solution Approach 1:
The sensor system is segmented into multiple subsets with different power consumption characteristics. A first subset of sensors operates continuously at low power to monitor basic location and activity, while a second subset of sensors operates only when state changes are detected, consuming higher power but only when necessary. This segmentation resolves the contradiction by having different sensor groups perform different functions at different times.
Solution Approach 2:
The system dynamically adjusts sensor operation modes based on detected state changes. When no state change occurs, the system operates in a low-power mode using only the first subset of sensors. When a state change is detected, the system transitions to a high-power mode activating the second subset of sensors. This dynamic adaptation allows the system to maintain high reliability when needed while minimizing power consumption during normal operation.
2Loss of information
If multiple sensors are activated simultaneously to gather comprehensive data, then the completeness of contextual information is improved, but device power consumption increases
Solution Approach 1:
Sensors are divided into functional segments: a first subset for basic monitoring and a second subset for comprehensive data collection. The system activates only the necessary segments based on the detection scenario, preventing unnecessary power consumption while ensuring complete information gathering when required.
Solution Approach 2:
The system applies partial action by activating only the necessary sensor subsets for each operational mode. Instead of continuously activating all sensors, it uses the first subset for routine monitoring and the second subset only when state changes occur, avoiding excessive action and its associated power consumption.
Data Source
AI summary
An electronic device may maintain a list of possible locations for the electronic device and a list of possible activities for the electronic device. The electronic device may gather sensor data and determine the location and the activity for the electronic device based on the sensor data. In response to detecting a change in the location and/or activity, the electronic device may obtain additional sensor data using at least one sensor that was previously turned off. Using the additional sensor data, the electronic device may make a determination to present content to the user. In response to detecting the change in the location and/or activity, the electronic device may increase a sampling rate (and power consumption) of at least one sensor.