Wireless Logger Wake-Up Control for Low-Battery Transport Readiness
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Solution Overview
Problem
The existing logger devices consume significant energy during storage at the origin location, leading to battery depletion below 90% before actual transport starts, which necessitates recharging and is both tedious and time-consuming.
Innovation Solution
A method for operating wireless logger devices that involves setting the device in a first low-power mode for data measurement and storage, with occasional higher-energy mode communications. When an event is detected, the device adjusts to a second higher energy mode for transport mode determination, reducing unnecessary wake-ups and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the logger device wakes up with a fixed frequency (e.g., every 12 hours) to communicate with the external data processing device during storage at the origin location, then the device can detect asset orders and ensure proper monitoring setup, but the energy consumption increases significantly over time, causing battery depletion below 90% before transport starts
Solution Approach 1:
The logger device dynamically adjusts its wake-up frequency based on operational context. During storage at the origin location, the device uses a reduced wake-up frequency (e.g., every 168 hours instead of every 12 hours) to minimize power consumption. When the device detects it has been transported to a new location, it automatically switches to a higher wake-up frequency to ensure timely detection of asset orders and proper monitoring setup. This dynamic adaptation resolves the contradiction between reliable asset order detection and energy conservation during storage.
Solution Approach 2:
The system changes the operational parameter of wake-up frequency based on the device's location and operational state. During storage phase, the wake-up frequency is set to a lower value (e.g., once every 168 hours) to conserve battery power. Upon detecting transport (via GPS location changes or other sensors), the system transitions to a higher frequency mode. This parameter change allows the device to maintain reliable asset order detection when needed while minimizing power consumption during extended storage periods.
2Reliability
If the logger device uses a high wake-up frequency to ensure timely detection of asset orders and monitoring setup, then the reliability of monitoring is improved, but the battery life is reduced and recharging becomes necessary before transport
Solution Approach 1:
The logger device employs dynamic wake-up frequency adjustment that adapts to operational needs. During storage, the device uses extended intervals between wake-ups (e.g., 168 hours) to preserve battery life. When the device detects transport conditions (through GPS, accelerometer, or other sensors), it automatically increases the wake-up frequency to ensure timely detection of asset orders and proper monitoring configuration. This dynamic behavior ensures reliable monitoring setup detection only when necessary, extending overall battery life without compromising critical functionality.
Solution Approach 2:
The system performs preliminary detection of transport conditions before full monitoring activation. The logger device continuously monitors for transport indicators (location changes, motion patterns) in a low-power state, and only then activates the higher-frequency wake-up cycle for asset order detection. This preliminary action allows the device to prepare for reliable monitoring only when actually needed, avoiding unnecessary high-frequency wake-ups during storage and thereby extending battery life.
3Use of energy by moving object
If the logger device remains in low-power mode during storage to conserve energy, then power consumption is minimized, but the device cannot detect events or communicate with the external data processing device until wake-up
Solution Approach 1:
The device segments its operational modes into distinct low-power and event-detection states. During storage, the logger operates in an extended low-power mode with minimal wake-ups, conserving energy. However, the device maintains the capability to detect transport events (through continuous or periodic sensing of motion, location, or other transport indicators). When transport is detected, the device transitions to an active state where full event detection and communication capabilities are restored. This segmentation allows the device to minimize power consumption during storage while preserving event detection capability when needed.
Solution Approach 2:
The system uses an intermediary transport detection mechanism that operates at low power to bridge the gap between extended sleep mode and full active monitoring. The logger device employs low-power sensors or periodic checks to detect transport conditions (such as GPS location changes, accelerometer data, or RFID tag reads). This intermediary detection layer allows the device to remain in low-power mode during storage while still being able to detect when transport begins, triggering the transition to full event detection and communication modes without losing critical information.
Data Source
AI summary
A method is provided for operating a wireless logger device at least prior to placing the logger device in a transport mode where the logger device is configured to monitor an environmental-related parameter of an asset while the asset is transported from an origin location to a destination location. The method includes setting the logger device in a first low-power mode where the environmental-related parameter is measured by the sensing device; identifying if there is a deviation in the measured environmental-related data: checking if the logger device is to be set to a transport mode, where in case the checking results in that the logger device is to be set to a transport mode, setting the logger device to a transport mode and adjusting a communication frequency with the external data processing device to a second-time frequency, the second-time frequency being larger than the first-time frequency