Self-assembling wireless network, vehicle communications system, railroad wheel and bearing monitoring system and methods therefor
US7705743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2007 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Mar 2, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A low power self-organizing network is made up of a plurality of wireless communication nodes communicating wirelessly with each other. The nodes each have a sensor providing a respective sensor data value indicative of a physical parameter in the environment of that node. The wireless network discontinues communication with any nodes in which the sensor data value is outside a range of network sensor data values. The network is preferably a group of vehicles moving together, especially a train in which each node is associated with a respective wheel of a railroad car. The nodes are low-power devices that communicate using wireless communications according to a Zigbee protocol. The nodes each have an additional sensor sensing a physical parameter the respective wheel thereof and determines from said electrical signal a degree of degradation of a bearing of the wheel, and transmits data of the degree of degradation to the main node. The main node communicates with another computer system using a higher power communication system and transmits thereto data indicative of degradation of said bearings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.