Question

Maximum measure distance using bluetooth technology.

Asked by: MLundall

Hi,
I would like to know what the maximum distance is that can be econimically measure between two bluetooth devices.  If I have a base station, how far away will I still be able to receive a tag.  Direction is not important as long as I can have the measure.  If bluetooth can not accommodate measurments of up to 400m, do you know about any other technology (Except GPS, i'd prefer some sound wave device?) that can be used to measure the distance between a base station and a sender.  The possibility exists that e.g. trees, buildings etc can be between the two devices.
Thanks

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Asked On
2004-12-02 at 09:04:15ID21227888
Tags

distance

,

maximum

Topics

Bluetooth

,

Measurement Industry

Participating Experts
2
Points
500
Comments
4

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Answers

 

by: pierrel2Posted on 2004-12-21 at 14:01:27ID: 12879695

Your question requires clarification.  Are you measuring something, then sending the measurement as digital data over a Bluetooth link, or are you asking for the maximum effective radio range of a Bluetooth connection?  Bluetooth cannot in and of itself be used to measure distance.  In terms of alternative approaches, trees, buildings, etc that you mention will reflect ultrasound.  They will also, to different degrees, interfere with various radio frequencies and with laser rangefinders.   If distance is what you want, GPS or Differential GPS are going to be your most accurate choices.

 

by: Code_AngelPosted on 2005-01-23 at 06:49:39ID: 13115111

Read documentation on the site below

http://epubl.luth.se/1402-1617/2002/125/LTU-EX-02125-SE.pdf

It answers all the questions and issues you have raised.

Currently they are positioning systems which use UMTS, GSM, Bluetooth, infrared, WLAN(IEEE 802.11x  HIPERLAN) and RFID. The applications range from indoor, outdoor and marine. The maximun distance on which two bluetooth  devices can reach other is depended on the class of the devices. Class 1 device maximum distance is 10m, Class 2 device maximum distance is 50m and Class 3 device maximum distance is 100m.

20120131-EE-VQP-002

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