Bluetooth wireless RS232 modules used in SOS communications pillars
12 March 2003
News
Electrowave has been a member of the Bluetooth Special Interest Group and involved in the development of Bluetooth short-range wireless communication applications for over two years. The company has built up significant understanding and expertise in the use of various Bluetooth devices.
In one of the applications, a Bluetooth RS232 module paired with a second Bluetooth RS232 module, allows a wireless RS232 communications link to be made at various data rates ranging from 9600 up to 115,2 kbaud with 'line of sight' distances of up to 500 m. This module is currently being used to run a communications link between pairs of master and slave 'electrowave SOS emergency communication pillars' that have been installed on opposite sides along the N1 and N4 national highways outside Pretoria.
These master and slave pillars are installed approximately 70 to 100 m apart and the Bluetooth link eliminates the need for a cable to be installed under the highway for the transfer of information between the pillars. Such a cable would have been expensive to install and would have become a maintenance problem, as it would be subject to potential damage during the process of road maintenance and resurfacing. Electrowave says that these modules have run successfully with no failures to date in spite of the harsh temperature extremes that they have been subjected to as a consequence of the SOS Pillars being exposed to the effects of the sun.
The Bluetooth RS232 module is a relatively inexpensive way of establishing a remote point-to-point RS232 link and is suitable for harsh environmental conditions, in particular, where electromagnetic interference in the form of radiated emissions from plant or equipment is prevalent.
Further reading:
From the editor's desk: The art of measuring the truth
Technews Publishing
Editor's Choice News
All electronic measurements are a lie. The trick is making the lie as small as possible.
Read more...
TSE has relocated
News
The Technology Station in Electronics (TSE) has entered a new chapter with its relocation from the CSIR campus to TUT-owned building at Ditsela Place in Hatfield.
Read more...
Innovative MyLegrand app
RS South Africa
News
Legrand SA is set to launch the MyLegrand mobile application, a digital platform designed to strengthen engagement across its professional network.
Read more...
Kulani Energy acquires critical assets from Optipower
News
Kulani Energy preserves engineering, procurement, and construction capability and positions a wholly women-owned firm at the forefront of South Africa’s grid expansion.
Read more...
From Cape Town to Johannesburg
News
Würth Elektronik South Africa has taken a significant step forward with its recent relocation from Cape Town to Johannesburg, marking a new phase of growth and ambition for the company.
Read more...
Lesley Havenga: Building partnerships for Africa’s electronics future
Editor's Choice News
As Würth Electronik expands its footprint across South Africa and the broader sub-Saharan region, Havenga’s blend of manufacturing expertise, supply chain knowledge, and people-centred leadership appears well suited to the task.
Read more...
Tackling e-waste with help from international partners
News
Every year millions of electrical and electronic devices and appliances, including mobile phones and computers, are thrown away and these items are now the fastest growing waste stream in the world.
Read more...
From the editor's desk: Pricing surge reshapes engineering reality
Technews Publishing
News
The recent and continuing surge in memory prices has become more than a supply-chain story confined to global semiconductor markets. We have watched in disbelief as the ASP of memory has risen by over
...
Read more...
Siemens democratises EDA software access
News
This collaboration will provide streamlined access to advanced electronic design automation software for European semiconductor innovation.
Read more...
Components distribution: A promising trend
News
The European electronic components market returned to solid growth in Q1, gaining 16,9%, with broad, but uneven, momentum across the region.
Read more...
printer friendly version