MicroArm MINI2440 Bedienungsanleitung PDF herunterladen (Seite 4)

Abstract

Title: Automated system for the surveillance and control of environmental variables based on ARM

mini2440 platform.

The objective of this project is the development of a system to monitor and store the temperature

and humidity of an area. The hardware used is the board mini2440 by FriendlyARM and the sensor

DC-SS500 by Sure Electronics. The software for both the board and the host PC is Linux, free

software and open source software is preferred whenever possible.

This project, the board's hardware and software belong in the field of embedded systems, so some

details are given about these systems and their special properties. An embedded system is designed

for a specific job and is part of a larger system. Every day use electric and electronic devices are often

that kind of systems.

The developed software includes a background program and a web interface. The background

program measures and stores temperature and humidity values. In addition it controls two LEDs, one

of which lights when temperature or humidity exceeds some maximum values, the other lights when

one of them goes below some minimum values. The interface gives the ability to set the minimum and

maximum values for the background program, to ignore these values and use the LEDs manually, to

observe the current temperature and humidity values and to browse older measures.

The idea is that, by replacing the LEDs by temperature and humidity control devices, like an air

condition, a heater or a fan, we could monitor the environmental variables of a place, affect them

manually or let the system preserve the desirable temperature and humidity by setting the right

minimum and maximum values. All programs are written in C. While the interface is written in C cgi

making it accessible even via internet.

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MicroArm MINI2440 Bedienungsanleitung Seite 4