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:
SACEEC celebrates standout industrial innovation on the KITE 2025 show floor
News
Exhibitor innovation took the spotlight at the KITE 2025 as the South African Capital Equipment Export Council announced the winners of its prestigious New Product & Innovation Awards.
Read more...
SA team for International Olympiad in Informatics
News
The Institute of Information Technology Professionals South Africa has named the team that will represent South Africa at this year’s International Olympiad in Informatics.
Read more...
Anritsu and Bluetest to support OTA measurement
News
Anritsu Company and Sweden-based Bluetest AB have jointly developed an Over-The-Air measurement solution to evaluate the performance of 5G IoT devices compliant with the RedCap specification.
Read more...
The current sentiment of the global electronics manufacturing supply chain
News
In its latest report, the Global Electronics Association provides an analysis of the current sentiment and conditions in the global electronics manufacturing supply chain as of June 2025.
Read more...
Global semiconductor sales increase in May
News
The Semiconductor Industry Association recently announced global semiconductor sales were $59,0 billion during the month of May 2025, an increase of 19,8%.
Read more...
New president for Avnet EMEA
News
Avnet has announced that Avnet Silica’s president, Gilles Beltran, will step into the role of president of Avnet EMEA.
Read more...
DARPA sets new record for wireless power beaming
News
In tests performed in New Mexico, the Persistent Optical Wireless Energy Relay program team recorded over 800 W of power delivered for about 30 seconds with a laser beam crossing 8,6 kilometres.
Read more...
Nordic Semiconductor acquires Memfault
RF Design
News
With this acquisition, Nordic has launched its first complete chip-to-cloud platform for lifecycle management of connected products.
Read more...
Trina storage demonstrates high efficiency and long-term reliability
News
Independent testing confirms 95,2% DC efficiency and 98% capacity retention after one year of operation.
Read more...
From the editor's desk: AI – a double-edged sword
Technews Publishing
News
As with any powerful tool, AI presents challenges, some of which, if not carefully managed, threaten to undo the potential that it can offer.
Read more...
printer friendly version