Wireless Technology Offers Improved Performance and Cuts Operational Costs for Fleet Management Applications
1/23/2003 - Highlighting the breadth of applications now employing wireless technology, leading supplier of high performance, cost effective 2.4GHz spread spectrum wireless modules AeroComm has supplied transceivers for vehicle management applications that save time and money and greatly ease essential operational fleet management duties.
Fleet management companies - for trucks, coaches, buses, cars, cargo containers, railway carriages, forklifts, and trailers - often need to exchange data between the vehicle and a base station. Such data can include engine performance for maintenance alerts, refrigeration unit performance, forklift battery condition, driver oversight (excessive speed/engine revs), driver performance such as hours worked, routes travelled, comparing fares collected with the number of passengers, and so on.
There are many benefits to be gained from deploying a vehicle data collection system. To avoid breakdowns, companies are able to diagnose and report engine problems from information contained in their timely, periodic updates. in a matter of seconds. For health and safety they can monitor the environmental conditions of a refrigerated cargo and report exceptions. They can monitor driver behavior, speed and hours, obtain records on fuel consumption, monitor brake wear and detect ABS brake faults, access electronic logs of vehicle servicing, and amazingly - from downloaded data they are often able to re-construct accidents to avoid load claims.
In use, a server radio (base station) is connected to a central data collection PC. Multiple 'client' radios are mounted on vehicles. Periodically the radios receive downloads from the server (delivery instructions for example) but more commonly the radios will upload data gathered and stored while the vehicles were away for reasons as mentioned above.
Crucially, fleet management companies require cost effective, automatic data collection on a timely basis. Whilst initially this seemed to call for wide area networks, fleet managers found this option to be expensive, additionally they found that periodic - daily data collection for example, is sufficient. Continuous data collection while trucks roamed led to information overload.
Importantly, fleet managers need the information when they can do something about it, such as when the truck returns to base. They can schedule maintenance or question a driver when alerts are issued upon the truck entering the facility. As one industry executive has said, fleet managers are not air traffic controllers standing by their PCs watching their trucks; they want information when they can use it (e.g. the vehicle and the driver are in the depot) and they need it at low cost. While the price of GSM and GPRS are coming down, there are still some issues over coverage, multi country carriers and roaming fees. Data rates are slower, so airtime costs may be higher.
The radio modules from AeroComm are available to OEMs for incorporation into fleet management systems. The modules offer an extended temperature range of -40ºC to 80ºC for outdoor applications. The radios are point to multipoint architecture; hence a central base station can talk to numerous 'clients' radios. To minimise airtime and reduce RF collisions, AeroComm's radio modules are fast, offering serial interface rates up to 115Kbps.
AeroComm's developer tools and industry specific expertise enable fast time to market for OEMs with assistance from AeroComm RF engineers. Further, transceivers are agency pre-certified for fast development schedules and reduced regulatory agency expertise and cost for the OEM.
Formed in 1990, AeroComm was the first manufacturer to gain FCC approval for 2.4 GHz direct sequence spread spectrum transceivers in 1994. Since then, the company has shipped over 100,000 wireless connectivity devices for home, small business and OEM markets. In 1996, AeroComm's technical focus became frequency-hopping due to its reduced cost, lower power consumption, higher interference immunity and smaller size. Today its proprietary methods of implementing spread spectrum technology enable wireless applications that were previously cost-prohibitive. The ConnexRF line offers a variety of standard OEM RF transceivers as well as custom solutions for major OEMs. An award-winning GoPrint line of printer sharing devices is also available via retail channels.
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