The system consists of wireless temperature probes that transmit data back to a centralised 2G data gateway. The gateway transmits data to a web server via the cellular network. Data is then processed by the server and securely backed up.
Alerts can be set at the server level: these send out email and/or text messages to users specified by the site.
It is possible to set different actions for different alert levels and real-time data can be viewed from any Internet-connected PC using freely available Windows-based software. In addition, customised weekly reports can be generated and sent via email; these can be used to demonstrate compliance with the site’s operating procedures for internal auditing and insurance purposes.
The data viewing software is Windows-based and fully up-gradable and customisable. Unlimited copies of the software to allow for viewing of the data on office PCs would be included. The core functions of the software are to:
•Allow users to enter details of batch formations, movements, and recoveries;
•Provide users with reports in HTML format to demonstrate compliance with monitoring procedures;
•Register the movement of wireless probes to different site areas if required; and
•Send alerts by email and/or SMS message if predetermined alarm criteria are exceeded.
The data display software is currently only available in English. If required, it would be possible to extend this to French / Flemish. The SMS / email alerts can currently be configured for any language.
The smarTprobe system includes a facility for issuing high-temperature alerts if temperatures exceed pre-determined levels. It is possible to configure alerts based on an absolute temperature, or a certain time at a given temperature. The criteria for issuing alert levels should be set based on characterisation of the pile, and also reviewed periodically, based on historical data. An example state diagram of a 3-tier alert system is shown above.
The temperature probes have been purpose designed for use in recycled material. These are the key specifications of the probes: