Wireless passive self-powered ubiquitous intelligent sensing system based on vibration energy harvesting

By adopting a wireless self-powered system based on vibration energy harvesting on rail trains, the problems of unstable energy harvesting and low communication reliability faced by sensors on rail trains have been solved. This enables real-time monitoring and fault diagnosis of multiple physical quantities of key train components, reduces installation and maintenance costs, and improves the flexibility and reliability of the system.

WO2026152497A1PCT designated stage Publication Date: 2026-07-23BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
BEIJING JIAOTONG UNIV
Filing Date
2025-01-24
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

Existing wireless self-powered sensors face problems such as limited operating frequency band, unstable energy harvesting, low energy management efficiency, low communication reliability, and limited data processing capabilities on rail trains, making it difficult to achieve real-time, accurate monitoring and multimodal perception of key train components.

Method used

A wireless, self-powered, ubiquitous intelligent sensing system based on vibration energy harvesting is adopted, including a vibration energy harvester, an energy management circuit, and a multimodal wireless sensor. By converting the vibration energy of the rail train into electrical energy, the sensor and communication unit are self-powered. It also integrates multimodal sensing and wireless data transmission functions, and combines edge data processing equipment for comprehensive analysis and cloud interaction.

Benefits of technology

It enables real-time monitoring of multiple physical quantities of key train components, provides a stable power supply, reduces installation and maintenance costs, improves system deployment flexibility and data reliability, supports fault diagnosis and operational safety assessment, and is suitable for ubiquitous intelligent sensing in rail transit.

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Abstract

Provided in the present invention is a wireless passive self-powered ubiquitous intelligent sensing system based on vibration energy harvesting. The system enables the self-powering of sensors and communication units by means of converting vibration energy of a rail train into electric energy, and integrates the functions of multi-modal sensing and wireless data transmission, thereby eliminating the limitations of external power supply and complex wiring. The system enables real-time and accurate monitoring of the operating state of the train and the performance of key components without increasing operational costs and maintenance burden, has the advantages of flexible deployment, high energy utilization rate, rich sensing information, low cost, high reliability, etc., and provides solid support for the technological advancement of rail transit trains from limited sensing to generalized sensing and from single-modal sensing to multi-modal sensing.
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