Sketchboard

The vision with this sketchboard is to describe some ideas that can provide inspiration to clients. The ideas will only be realised if clients gives some feedback with expression of interrest.

Clients are also very welcome to provide new ideas, that will be posted here on the board.

Hjelmslund Electronic

Level controller with SMS alarms

HeCom app. for controlling level of liquid nitrogene in dewar. Refill of N2liq when dewar is empty.
Logging the timeinterval between each refill, and the N2 consumption is calculated as a ratio between the time it fills, and time it consumes N2. Event logging as historical data. Send alarm SMS if refill is not done before a specified timelimit, -> N2 source is empty.

External phone module

External phonemodule for HeCom. Robust, for use in harsh environments. A variety of different interface possibilities, so the phone can be used for other aplications than just HeCom.

Power failure function to HeCom

HeCom will send an alarm SMS if supply voltage is interrupted. Phone + HeCom is driven by the backup battery from the phone during that process.

SMS based gas alarm

HeCom module, 24bits ADC add-on and 8 gassensors. Overall configuration by modemcall, but alarmpoints can be adjusted with both modem and SMS fuctions, so Internet connection is not necesarry when alarmpoints are changed.