Application of information and communication technologies in home telehealth system
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1 Lecture of ME567A Gerontechnology, Yuan Ze University Application of information and communication technologies in home telehealth system Yeh-Liang Hsu, Ph.D Professor, Department of Mechanical Engineering Director, Gerontechnology Research Center Secretary General, Yuan Ze University 05/17/20 1
2 The Decentralized Home Telehealth System Home telehealth system Event alert, IP status Application server Sensor 1 Sensor 2 Sensor 3 Distributed Data Server (DDS) Cable/wireless receiver As a thin server Processor MMC Request/Data Applet User name IP convert Care-giver/Client user /SMS event message, regular report Laptop PC As a software Centralized database ADSL, Cable modem or 3G communication 2
3 Workshop on building a home telehealth system (I) Doctors Caregivers 3
4 Workshop on building a home telehealth system (II) Wireless Sensors Internet DDS PC Wireless Sensor Network 4
5 Basic concepts of communication technologies (1/4) Communications: Transmitting voices, text, image and data between n two remote places through certain communication media Communication media Telephone line, TV cable, light fiber, power line Wireless transmission: electromagnetic waves,, light Two major considerations when selecting communication technologies: es: Transmission speed: data rate,, expressed in kbps or Mbps Transmission distance 5
6 Basic concepts of communication technologies (2/4) Electromagnetic waves Wave length λ and frequency ν (Hz) λ = c /ν Energy of electromagnetic waves E = hν, h = J sec 6
7 Basic concepts of communication technologies (3/4) Spectrum of electromagnetic waves 紅 波長 (nm) 橘綠 紫 400 可見光 波長 (Wavelength-m) 長波無線電波紅外線紫外線 χ 射線 γ 射線 γ 射線 頻率 (Frequency-Hz) 航海 航空通訊 調幅 (AM) 航海 航空與無線電話 電視頻段 (2~6) 調頻 (FM) 電視頻段 (7~13) 私用無線電頻段 手機通訊 頻率 (Frequency-Hz)
8 Basic concepts of communication technologies (4/4) Communication technologies classified by transmission distance WWAN (Wireless Wide Area Network) WMAN (Wireless Metropolitan Area Network) WLAN (Wireless Local Area Network) WPAN (Wireless Personal Area Network) NFC (Near Field Communication) 8
9 Typical communication framework of a home telehealth system Wireless 無線中繼結點 base station 感測裝置 Sensors Cell phones, 手機 phone, PDA Cell 手機 phone, PDA PDA Database 資料庫 Set-top 機上盒 box, PC Household 居家端 PC 照顧人員端 Wired 有線通訊 communication Caregivers 無線通訊 Wireless communication 9
10 RS-232 and USB Vital sign data transmission at local site (1/8) Transmitting data from sensing device to home gateway RS-232, 115.2kbps, 60m USB is much faster than RS-232 USB 1.1 host control USB 2.0 host control Compatibility USB 1.1 USB 2.0 USB 1.1 USB 2.0 Low speed 1.5Mbps 1.5Mbps 1.5Mbps 1.5Mbps Full speed 12Mbps 12Mbps 12Mbps 12Mbps High speed 12Mbps 12Mbps 12Mbps 480Mbps
11 1 Byte = 8 bit 1 KB = 24 Byte 1 MB = 24 KB 1 GB = 24 MB 1 TB = 24 GB Let s s be clear about the units 1 Bps (Byte per second) = 8 bps (bit per second) 512 kbps = 64 KBps 1.5 Mbps = 1536 kbps = 192 KBps 3 Mbps = 3072 kbps = 384 KBps 11
12 Near Field Communication or NFC, is a short-range range high frequency wireless communication technology which enables the exchange of data between een devices over about a cmc distance. (Wikipedia) NFC technology is an extension of Radio Frequency Identification (RFID). Frequency: 13.56MHz; transmission distance: up to 20cm; data rate: 6kbps, 212kbps, 424kbps, 848kbps. Applications: Vital sign data transmission at local site (2/8) Near Field Communication (NFC) Card emulation: the NFC device behaves like an existing contactless card for electronic ticketing, electronic money, electronic key P2P mode: two NFC devices are communicating and exchanging information. 12
13 Vital sign data transmission at local site (3/8) A personal area network (PAN) is a computer network used for communication munication among computer devices, including telephones and personal digital l assistants, in proximity to an individual s s body. (Wikepedia) The reach of a PAN is typically a few meters. PANs can be used for communication among the personal devices themselves, or for connecting to a higher level network and the Internet. A wireless personal area network (WPAN) can also be made possible e with network technologies such as IrDA, Bluetooth, and ZigBee. 13
14 WPAN Vital sign data transmission at local site (4/8) Infrared: The Infrared Data Association (IrDA) defines physical specifications communications protocol standards for the short-range range exchange of data over infrared light. (Wikipedia) The transmission distance of IrDA is up to 8m. Data rate is 16 Mbps. M IrDA interfaces are used in medical instrumentation, test and measurement equipment, mobile phones, and laptop computers, digital cameras, PDAs etc. IEEE is now the main stream technology for WPAN IEEE , Bluetooth IEEE , ZigBee 14
15 Vital sign data transmission at local site (5/8) WPAN Bluetooth was invented by telecom vendor Ericsson in It was originally conceived as a wireless alternative to RS-232 data cables to connect mobile phone and earphone wirelessly. Frequency: 2.4GHz, transmission distance: up to 0m Data rate: Version 1.0 1Mbps, Version EDR (2004) 3Mbps, Version HS (2009) 24Mbps. Lower power consumption, short range, safe and reliable, many extensions and applications. 15
16 Vital sign data transmission at local site(5/7) WPAN Zigbee: : The technology defined by the ZigBee specification (2003) is intended to be simpler and less expensive than other WPANs,, such as Bluetooth. ZigBee is targeted at radio-frequency (RF) applications that require a low data rate, long battery life, and secure networking. Frequency: 2.4GHz; transmission distance: ~75m, data rate: kps~250kbps Applications: Home Automation, ZigBee Smart Energy, Commercial Building Automation Telecommunication Applications Personal, Home, and Hospital Care Environmental information collecting 16
17 Vital sign data transmission at local site (6/8) WPAN Zigbee Wireless Sensor Network (WSN): Coordinator, router and end device Router/End Device Router/End Device Router/End Device Router/End Device Coordinator Router/End Device Router/End Device Router/End Device Router/End Device 17
18 Vital sign data transmission at local site (7/8) Wireless Local Area Network, WLAN IEEE , indoor, low mobility, high data rate Specification a b g Date 1999/7 1999/7 2003/6 Frequency 5GHz 2.4GHz 2.4GHz Data rate 54Mbps 11Mbps 54Mbps Transmission distance 0m >0m >0m 18
19 Health data transmission to the remote site (1/2) Plain Old Telephone Service, (POTS) or Public Switched Telephone Network, PSTN Integrated Services Digital Network (ISDN) Asymmetric Digital Subscriber Line (ADSL) Cable Modem Data Rate POTS/PSTN ISDN ADSL Cable Modem <56kbps ~1.5Mbps 8Mbps/640Kbps ~5Mbps 19
20 Health data transmission to the remote site (2/2) Wireless Metropolitan Area Network (WMAN) WiMAX: Worldwide Interoperability for Microwave Access Specification Frequency Transmission distance Data rate IEEE GHz~66GHz 1.6km ~ 4.8 km 32 Mbps ~134Mbps Fixed IEEE d 3.5 GHz 及 5.8GHz 6.4 km ~ 8.6 km 75Mbps Fixed IEEE e 2.5 GHz 及 3.5GHz 1.6 km ~ 4.8 km 15Mbps Mobile Wireless Wide Area Network (WWAN) Mobile data network: GSM (8.6kbps), GPRS (64~115kbps), 3G (114kbps~2Mbps), 3.5G (384kbps~3.6Mbps) 20
21 Yuan Ze University Thank You Yeh-Liang Hsu grc.yzu.edu.tw/ designer.mech.yzu.edu.tw/ 21
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