Embedded Operating Systems :

Recently i worked in embedded operating systems WinCE & embedded version of Linux. the linux actually doesn’t have embedded version itself but with some modification to kernel and other stuff we can create an embedded version.

The linux and WinCE are two different approaches , the WinCE is simple , easy of use and compatible to other microsoft products, the Linux is very flexible, industry standard, very good documentations and also open source.

So i selected linux as my mainline operating system for embedded working. i was worked with cairo, directfb, buildroot, grub, dri & mesa3d for hardware or software accelerated 2D & 3D operations in embedded linux.


Ultrasonic Air Thermometer :

The Sound Speed Varies with temperature, So If we can extract the sound speed in air ,the air Temperature can be calculated. This is the Simple Concept.

The Air Pressure have little effect on the airspeed, anyhow we can remove it with some calculations.

I Constructed an simple device that measures the speed of sound in Air and calculate the air temperature. the device works very well with precision degree of 1 deg of Celsius.

These types of thermometers are Instant Response, they response the air temperature very fast and accurate. though i built one of this thermometers i don’t continue this project because lack of instruments needed. but the documentations, schematic, pcb and source codes are available, if any one interested contact me. also i patented this system.

1 Comment

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