Real-time data

Introduction

For many years, Iosoft Ltd. have been developing custom solutions for real-time data transmission, as shown by the on-line display of the air quality data for Cambridge UK.

The data is gathered from two sources; road-side units are polled twice daily using telephone lines, while the main data is transferred by email using a custom network interface attached to a conventional datalogger.

The data is processed by Perl scripts running on a Linux system, to produce comma-delimited files containing the data for the past 24 hours; these files are used to generate the 24-hour graphs, which are then upload from the Linux system to this Web site.