Context-Aware IoT Sensor Power Management via Dynamic State Transition
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Solution Overview
Problem
Current IoT systems face challenges in efficiently managing power consumption and bandwidth usage among sensors, particularly in transitioning high-power sensors between low-power and high-power states based on event detection, which affects their operational efficiency and resource utilization.
Innovation Solution
A system that includes a controller circuitry capable of receiving signals from low-power sensors to determine if an event meets defined criteria, activating high-power sensors only when necessary, and determining activation intervals based on event contexts, thereby optimizing power and bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-power sensors are continuously activated to ensure reliable event detection, then detection reliability is improved, but power consumption increases
Solution Approach 1:
The sensor system dynamically transitions between low-power and high-power states based on detected events. The controller adjusts the operational state of sensors in real-time, switching from standby to active mode when events are detected, and returning to low-power mode when events subside, thereby optimizing the balance between detection reliability and power consumption
Solution Approach 2:
The system implements periodic monitoring where sensors alternate between active detection phases and low-power standby phases. During standby, sensors consume minimal power while remaining capable of detecting events. When events are detected during these periodic cycles, the system activates high-power sensors for comprehensive monitoring, creating a rhythmic pattern of power consumption that maintains reliability while reducing overall energy use
2Reliability
If high-power sensors are activated frequently to detect all events, then detection completeness is improved, but network bandwidth consumption increases
Solution Approach 1:
The system applies different monitoring intensities to different spatial zones or event types. Rather than uniformly activating all high-power sensors across the entire network for every event, the controller selectively activates sensors only in the specific locations or for the specific event types where they are most needed, thereby maintaining detection completeness while reducing overall network bandwidth consumption
Solution Approach 2:
The system activates high-power sensors partially or selectively rather than continuously. Instead of maintaining full sensor power across the entire network at all times, the controller activates high-power sensors only to the extent necessary for detecting and responding to specific events, using just enough monitoring capacity to maintain detection completeness without excessive bandwidth consumption
3Use of energy by moving object
If sensors operate in low-power state to conserve energy, then power efficiency is improved, but response time to events worsens
Solution Approach 1:
The system performs preliminary actions by pre-configuring sensors in a standby state with event detection capabilities enabled. Before actual events occur, sensors are prepared in low-power mode but maintain the ability to detect triggering events. When events are detected during standby, the system rapidly transitions to high-power operation, ensuring quick response time while maintaining power efficiency during non-event periods
Solution Approach 2:
The system preemptively counters the potential delay from low-power operation by implementing event-triggered activation mechanisms. Low-power sensors continuously monitor for event conditions, and upon detecting a triggering event, immediately activate high-power sensors to compensate for any potential response delay, thereby maintaining both power efficiency and acceptable response time
Data Source
AI summary
Each of a plurality of Internet of Things (IoT) devices includes at least one sensor. At least some of the plurality of IoT devices may have a single, low power, state. At least some of the plurality of IoT devices may have a first, low-power, low-bandwidth, “STANDBY” state and a second, high-power, high-bandwidth, “ACTIVE” state. Controller circuitry, that may include sensor abstraction circuitry and/or analytics circuitry receives a signal from a first IoT device, analyzes the signal and determines whether to transition a second IoT device from the STANDBY state to the ACTIVE state. The controller circuitry beneficially minimizes power consumption and bandwidth requirements for the second IoT device. The controller circuitry also determines at least one of: an event context or an environmental context.