» Iosoft Ltd
  - Wireless
  - Books
  - ChipVid Video
  - Software Updates
  - Embedded Web

» Embedded TCP/IP
  - Chipweb
  - Versions
  - Licensing
  - License FAQ

» Wireless
  - Introduction
  - 802.11 kit
  - Licensing
  - Wireless FAQ

» Video
  - ChipVid
  - Frame Grabber

» Real-time data
  - Introduction
  - Air Quality

» Books
  - First Edition
  - Second Edition

» Support
  - Compilers
  - Updates
  - License
  - Errata
  - Application notes
  - FAQs

» Online Sales

» Licensing

» Contact

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.


Click here to see the Cambridge Air Quality data.