Sensor data search system, sensor data search method and management computer
US10452666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2017 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | May 24, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In the sensor data retrieval system, a gateway connected to a plurality of sensor devices collects sensor data including measurement values and time stamps and stores them in a temporary storage part, and the management computer collects sensor data and stores sensor data in the first storage part, the management computer updates the collected time for each gateway as the first time, registers the sensor data of the first storage part in the second storage part in the registration cycle, the search part which updates the latest time stamp among the time stamps of the registered sensor data for each gateway with the second time as the second time and accepts the search period and searches for the sensor data of the time stamp included in the search period, and the search upper limit time from the search period, and compares the second time with the search upper limit time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.