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GSM controller offers cost-effective telemetry

A Sentry Telemetry product story
Edited by the Engineeringtalk editorial team Feb 17, 2005

The SentryGSM2 controller provides a cost effective, battery powered method of relaying data from Sentry products via GSM, the mobile phone network, to the company's database software.

The SentryGSM2 controller provides a cost effective, battery powered method of relaying data from Sentry products via GSM, the mobile phone network, to the company's database software.

Typical applications using the Sentry products include LPG (liquid petroleum gas) level monitoring, automatic meter reading (AMR), oil level monitoring and other applications which require data to be logged and transmitted from remote outstations.

The new SentryGSM2 is able to receive the "applications" data either by direct connection to the controller board or by utilising the inbuilt low power radio transceiver.

The onboard controller board can take the direct connection from the "outside world" of up to two analogue signals and also an additional three digital signals.

If an application has distributed devices remote from the SentryGSM2 then users can make use of the inbuilt two-way radiocommunications, which allows the remote connection of other equipment.

In order for the SentryGSM2 to log data at determined time intervals a real time clock provides the "wake up" signal to the controller board ensuring it reads the analogue and digital inputs, the same clock is also used to initiate the transfer of the outbound data packet using the GSM.

The SentryGSM2 is designed to promote reliable remote data collection and transmission.

Ensuring maximum battery life the system has been developed so that the GSM engine is only "awake" for the moment of transmission, therefore offering a battery life well in excess of 5 years, depending on the frequency of data transmission.

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