Sensor Historical Status Array for Missed Hazard Alerts
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Solution Overview
Problem
Smart devices, such as smoke and carbon monoxide detectors, often fail to deliver timely notifications when a network connection is unavailable, leading to missed hazard events due to delayed status updates, as the device may revert to a normal state by the time it connects to the server, resulting in lost confidence in the detection system.
Innovation Solution
Implementing a method where the device measures environmental conditions, determines changes in status, and establishes a network connection to transmit a historical status array if the status has reverted to a previous state before synchronization, allowing for retroactive notifications to be sent to user devices without a request, ensuring timely alerts even after the hazard has dissipated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the device waits for network connection to transmit status updates, then power consumption is reduced, but information delivery reliability deteriorates due to missed hazard events
Solution Approach 1:
The device performs preliminary actions by storing status changes locally in a historical status array before network connection is available. When the network becomes available, the device transmits these pre-stored status updates, ensuring that hazard information is delivered even though the device was in low-power mode during the hazard event.
2Reliability
If the device continuously maintains network connection for real-time monitoring, then information delivery reliability is improved, but power consumption increases
Solution Approach 1:
Instead of continuous network connection, the device employs periodic action by waking up at scheduled intervals to check for network availability and transmit any stored status updates. This periodic communication approach maintains information delivery reliability while significantly reducing power consumption compared to continuous connection.
3Productivity
If the device transmits current status only, then data transmission efficiency is improved, but information completeness deteriorates due to missed hazard events
Solution Approach 1:
The device performs preliminary action by recording status changes in a historical status array before network connection is available. When transmitting data, the device sends this pre-recorded historical status information along with current status, ensuring complete hazard event information is delivered efficiently in a single transmission once connected.
Data Source
AI summary
Various arrangements for handling delayed status update are presented. A network-enabled sensor unit may be used to measure an environmental condition. The sensor unit may determine, based on measuring the environmental condition, an environmental condition status has changed state. A network connection may be established that permits communication with a remote notification service system. This notification service system may maintain a remote status intended to be synchronized with the environmental condition status of the sensor unit. The sensor unit may determine that the environmental condition status has changed prior to communicating the environmental condition status to the notification service system. A historical status array may be transmitted to the notification service system in response to determining the environmental condition status has reverted to the first state prior to communicating the environmental condition status. The historical status array can indicate previous states of the environmental condition status of the sensor unit.