Bluetooth.ppt
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This document summarizes a seminar presentation on Bluetooth technology. It begins by explaining the origin of the name Bluetooth, which comes from a 10th century Viking king known for uniting territories. It then defines Bluetooth as a wireless technology standard for data transfer over short ranges using radio waves. The document outlines the history and development of Bluetooth, describes its specifications and topology including piconets and scatternets. It discusses Bluetooth hardware architecture and lists applications for Bluetooth in electronics and medical devices. It concludes by providing references for further information.
Bluetooth.ppt
- 1. Seminar on BLUETOOTH TECHNOLOGY Submitted To: Abhinav Bansal Assistant Proffesor ECE Department Submitted By: Anusha Srivastava ECE-3rd year Roll No-1103331037
- 2. Why the name BLUETOOTH? The name was adopted as a tribute to the tenth-century Viking king Harald Blåtand (940 to 985 A.D) who peacefully united Denmark and Norway . Harald liked to eat BLUEBERRIES, which gave his teeth the coloration that lead to the nickname "BLUETOOTH."
- 3. Q. What is Bluetooth??? Ans. Bluetooth is a method for data communication that uses short range radio links to replace cables between computers and their connected units.
- 4. Introduction Bluetooth is wireless high speed data transfer technology Bluetooth Wireless Technology (BWT) was developed in 1994 at Ericsson in Sweden. Purpose – Originally it was built to eliminate the need for cable connection between PADs and notebook PCs. Later the goals were to enable different devices through a commonly accepted standard for wireless connectivity.
- 5. Introduction(contd…) : Ericsson on the advent of BWT conceptualized a Radio Technology through a Wireless Personal Area Network (WPAN). Group called Bluetooth Special Interest Group (SIG) was formed in 1998 to develop the standard of IEEE 802.15 This specification standarized the Bluetooth technology world wide.
- 6. Bluetooth Specifications Developed by : J.Haarsten and S.Mattisson in Sweden Standard : IEEE 802.15 ISM band frequency : 2.4 GHz Range : 10 – 100 meters. Channel Band width : 1 Mbps
- 7. Bluetooth Topology Depending upon the type of connection established between the various bluetooth devices,there are two main topologies : 1. PICONET Topology 2. SCATTERNET Topology. To any topology,there are two prime components : 1. MASTER Device 2. SLAVE Device.
- 8. PICONET Topology : A PICONET consists of up to 8 BWT enabled devices. When PICONET is established , one device sets up frequency hopping pattern and other devices synchronize their signals to same pattern. The device that sets the frequency hopping pattern is called Master device. The devices that get synchronized are called Slave devices. Each PICONET has different frequency pattern.
- 9. PICONET Topology (contd…): Each PICONET has 1 Master for establishment of PICONET and up to 7 Slave devices. Master’s Bluetooth address is used for defining frequency hopping sequence. Slave devices use Master’s clock to synchronize their clocks so as to hop simultaneously. For establishing PICONET , other bluetooth devices are discovered by an inquiry procrdure.
- 10. SCATTERNET Topology SCATTERNET consists of several PICONETs connected by devices participating in multiple PICONETs. Here ,devices can be Slaves in all PICONETs or Master in one PICONET and Slave in other PICONETs. There is a ‘BRIDGE’ connecting two PICONETs which is also a Slave in other PICONET. The major advantage of SCATTERNET is the multiple hop-route and higher throughput.
- 13. HARDWARE ARCHITECTURE (contd…) : CPU Core – Helps Bluetooth Module to handle Inquiries and filter page request (not involving host device). Link Manager – LM software runs on CPU core.LM discovers other remote LMs and communicates to them via LMP (Link Manager Protocol). Bluetooth module also incoperates higher level software protocols, governing the functionality with other modules.
- 14. MERITS & DEMERITS OF BLUETOOTH : MERITS : • Low cost • Low power consumption • Wireless technology • Low maintenance cost • Easy link establishment • Reasonable throughput DEMERITS : • Short range (10 – 100m) • Speed • Short life
- 15. BLUETOOTH BASED DEVICES (APPLICATION) : • BLUETOOTH IN ELECTRONICS
- 16. APPLICATION (contd…) •BLUETOOTH IN MEDICAL DEVICES With the help of these divices various data can be collected and can be sent directly to the computer to keep a daily track of patients heart beat,blood sugar levels etc.
- 17. REFERENCES 1. www.bluetooth.com 2. www.slideshare.net 3. www.en.wikipedia.org/wiki/buetooth 4. How Bluetooth Technology Works“Bluetooth SIG.Archived from the original on 17January 2008. Retrieved 2008-02-01. 5. www.bluetooth.org
- 19. ANY QUESTIONS??