LPWAN Vibration Monitoring with Frequency-Band Event Alerts
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Solution Overview
Problem
Existing vibration monitoring devices have limited autonomy, requiring frequent maintenance and replacement, which is costly and inefficient for long-term monitoring at construction or industrial sites.
Innovation Solution
A vibration monitoring method using a sensor with a battery, processing unit, and transmission unit that divides the frequency range into sub-ranges, transmits data periodically via LPWAN networks, and alerts, using a tri-axis accelerometer and sealed casing for long-term monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If portable vibration monitoring devices with battery are used, then vibration monitoring capability is provided, but device autonomy is limited to a few weeks requiring frequent replacement
Solution Approach 1:
The device transmits vibration data periodically at defined sending periods rather than continuously, reducing energy consumption while maintaining monitoring capability. This periodic transmission extends battery autonomy from weeks to several months while still providing effective vibration monitoring.
2Reliability
If continuous vibration data transmission is implemented, then real-time monitoring is achieved, but energy consumption increases reducing device autonomy
Solution Approach 1:
The system implements periodic data transmission at configured sending periods, balancing real-time monitoring requirements with energy conservation. This allows reliable vibration monitoring while extending device autonomy by reducing unnecessary continuous transmissions.
Solution Approach 2:
The device divides the vibration frequency range into sub-ranges and applies different sending periods for different frequency bands. This parameter adaptation allows optimized energy consumption while maintaining monitoring accuracy across various vibration conditions.
3Reliability
If vibration data is transmitted frequently, then monitoring reliability is improved, but battery life is reduced
Solution Approach 1:
The system uses periodic transmission with configurable sending periods to achieve reliable monitoring without excessive battery consumption. This balanced approach extends battery life to several months while maintaining adequate monitoring reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method extends device autonomy to several months, reducing maintenance needs and costs while providing accurate, reliable vibration monitoring with improved sensitivity and event detection.
Implementation Method 1
a vibration sensor, a battery, a processing unit and a transmission unit
Data Source
AI summary
The invention describes a method for monitoring vibrations produced by an operating area, comprising the following steps: (E1): dividing an operating frequency range into a plurality of frequency sub-ranges; (E2): for each frequency sub-range, defining an associated vibration threshold; (E3): continuously acquiring vibration measurements produced by the operating area; (E4): periodically transmitting vibration data resulting from the vibration measurements, the vibration data being transmitted to a remote server (200) via an LPWAN network; (E5) detecting a vibration event corresponding to at least one vibration threshold being exceeded in the associated frequency sub-range; (E6): when a vibration event is detected, transmitting a warning to the remote server (200) via the LPWAN network.