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RFID System for Hospital CityU Technology Transfer Forum Advances in Wireless Communications Edward Kai-Ning Yung Department of Electronic Engineering.

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Presentation on theme: "RFID System for Hospital CityU Technology Transfer Forum Advances in Wireless Communications Edward Kai-Ning Yung Department of Electronic Engineering."— Presentation transcript:

1 RFID System for Hospital CityU Technology Transfer Forum Advances in Wireless Communications Edward Kai-Ning Yung Department of Electronic Engineering City University of Hong Kong 15 September, 2010 6/2/20141

2 A Vibrant City Never-ending construction everywhere Dusty, noisy, breezeless, hot & humid environment High pollution, high UV & radon radiations Hustling markets, bustling streets, & congested highways Competitive market & equally competitive office 24-hour working day, 7 days a week High-calorie diets, junk food, & irregular meals No regular exercise nor vacation Crowded and tiny living space 6/2/20142

3 Unique Health Care New drugs from everywhere Advanced facilities for better diagnosis Well-trained professionals with the latest skills Variety of sophisticated medical supports Complementary herbal medicine Excellent private hospitals Trustworthy safety net: public hospitals Exceptionally long life expectance 6/2/20143

4 Public Hospitals High medical bills and expensive medicines Highest Gini coefficient in the first world Ill-affordable medical insurance Everyone goes to public hospital, eventually Overburdened staffs in public hospitals Overloaded facilities in public hospitals Erroneous drug dispense, injection, & surgery Errors in transfer of patients (living or not) 6/2/20144

5 Miracle Drug Reduces load Minimizes error Enhances performance Provides value-added services Introduces innovative applications Saves lives 6/2/20145

6 Band Wagon RFID has been identified by the National Government as one of the areas of intensive development RFID has been identified by the National Government as one of the areas of intensive development It has also been identified by the Federal Government (USA) as one of the areas of intensive development It has also been identified by the Federal Government (USA) as one of the areas of intensive development 6/2/20146

7 RFID Radio Frequency Identification Is it a new technology? New wine in old bottle? Old wine in new bottle? 6/2/20147

8 AIDC Auto Identity and Data Capture Holleriths Punch Card, 1889 6/2/20148

9 Logistics Management Joe Woodlands bulls eye, 1949 Forrest Parrys magnetic stripe, 1966 6/2/20149 UPC barcode, 1973 EAN-14 Standard, 1974

10 Electronic Age Smart Card with microprocessors Cryptography: credit card, ATM SIM Card 6/2/201410

11 Contactless Card Inductive and capacitive couplings Frequency: 125kHz Unique ID number 6/2/2014 11

12 Wireless Alternative Electronic article surveillance: 134.2kHz Proximity card: 125kHz, 128kHz Ampoule for animal tracking: 134.2kHz Friend-of-Foe, WWII Leon Theremin, audio frequencies, 1946 Harry Stockman, back scattering, 1948 Steve Depp, demonstration, 1973 Charles Walton, RFID, 1980 6/2/2014 12

13 RFID Selection Passive RFID: HF RFID13.56MHz UHF RFID900MHz Active RFID: LF125kHz, 134.2kHz HF13.56MHz, UHF315MHz, 433MHz, 900MHz, 2450MHz SHF5800MHz 6/2/201413

14 Preferences Absolute reliability, time-proven technology Absolute reliability, time-proven technology Maximum flexibility Maximum flexibility High security for drug control and prisoners High security for drug control and prisoners Upward, downward, and lateral adoptability Upward, downward, and lateral adoptability Speedy location of equipment Speedy location of equipment Fast search of professionals Fast search of professionals Low-cost tags with adequately long life Low-cost tags with adequately long life 6/2/201414

15 Requirements Minimal changes to the existing practices Minimal changes to the existing practices No health hazard to patients with pace makers No health hazard to patients with pace makers No interference on medical equipment No interference on medical equipment Advantages of other RFID systems retained Advantages of other RFID systems retained Weaknesses of other RFID systems addressed Weaknesses of other RFID systems addressed Fast response Fast response Life and death issues-cannot wait 6/2/201415

16 HF RFID Category: passive RFID Principle of operation: electromagnetic coupling Frequency: 13.56MHz Characteristics: RF lucent, Range: 70-200 mm Competitive edge: small and light tags Inexpensive tag: ~RMB-1 6/2/201416

17 Applications Public transport: Octopus, Oyster Access control: estate, office, school, garage Personnel management: conference, examination Electronic cash: parking meter, convenience store Inventory control: libraries 6/2/201417

18 UHF RFID Category: passive RFID Principle of operation: back scattering Frequency: 900MHz Smaller and lighter tags Faster reading speed Larger memory Inexpensive tag: < RMB-1 6/2/201418

19 Cutting Edges Antenna: directional Antenna: directional Power output: 4W, EIRP Power output: 4W, EIRP Range: ~10 meters Range: ~10 meters Simultaneous tag readings Simultaneous tag readings Slow moving targets Slow moving targets Non-line-of-sight detection Non-line-of-sight detection Role Reversal 6/2/201419

20 Pioneer Projects Trace and track Real-time inventory check 6/2/201420

21 Fantasy Realization Theft-retardant Theft-retardant Counter-forgery Counter-forgery Anti-counterfeit Anti-counterfeit Expiry control Expiry control Surveillance Surveillance Accountability Accountability Use in harsh ambience Use in harsh ambience 6/2/201421

22 Weakness Prolonged exposure to strong EM field Prolonged exposure to strong EM field Electromagnetic interference Electromagnetic interference Ubiquity of used tags privacy Ubiquity of used tags privacy Tags could only be made at the chip level lack of flexibility Tags could only be made at the chip level lack of flexibility Coupling between the strong output and the weak feedback signals expensive reader Coupling between the strong output and the weak feedback signals expensive reader 6/2/2014 22

23 Active RFID Energy source: battery, vehicle, power supply, … Energy source: battery, vehicle, power supply, … Range: from a meter to kilometers Range: from a meter to kilometers Coverage: omnidirectional, focused and confined Coverage: omnidirectional, focused and confined Memory: huge Memory: huge Protocol: to be determined Protocol: to be determined Encryption: proprietary Encryption: proprietary 6/2/201423

24 Weakness 1.Larger, heavier, and more expensive tags 2.Frequent battery replacement 3.Electromagnetic interference 6/2/2014 24

25 Recommendation applications applications personnel personnel venues venues objects objects Occasions and conditions Occasions and conditions 6/2/201425 A unified system with a variety of RFID systems custom-designed for different

26 Semi-Active RFID Tag with wake-up and RFID parts Tag with wake-up and RFID parts RFID Frequency: 900MHz RFID Frequency: 900MHz Fixed and handheld RFID readers Fixed and handheld RFID readers 6/2/201426 Directional antenna in SD card Directional antenna in SD card

27 Wake Up Technology Frequency: 125kHz Harmonics are well below that of medical equipment 6/2/2014 27

28 Semi-active Tags Power consumption in sleeping mode: μW Power consumption in sleeping mode: μW Wake up upon detection of a 125 kHz wave Wake up upon detection of a 125 kHz wave Switched to the listen-before-talk mode Switched to the listen-before-talk mode Collision protocol: random delay Collision protocol: random delay Return to sleeping mode: after each transaction or a short duration Return to sleeping mode: after each transaction or a short duration 6/2/201428

29 Memory Bio-data with recent photograph Bio-data with recent photograph Medical history and list of allergies Medical history and list of allergies Relevant professionals Relevant professionals Next of kin and other relatives Next of kin and other relatives Date of registration, wards, payment method Date of registration, wards, payment method Prescriptions: medicine, operation, treatment Prescriptions: medicine, operation, treatment Special diet, personality, and others Special diet, personality, and others 6/2/201429

30 Personal Tags Not-too-small tag for patients Two CR2025 batteries could last for months Battery-low indication Name tag for staffs 6/2/201430

31 Wards Wake-up energizer mounted on the ceiling Wake-up energizer mounted on the ceiling Wake up energizer turned on by demand Wake up energizer turned on by demand RFID reader: SD for iPod RFID reader: SD for iPod Directional antenna on the SD covering 1 meter Directional antenna on the SD covering 1 meter Tag matching of patient and medicine Tag matching of patient and medicine Location of staffs, patients, and accessories Location of staffs, patients, and accessories Real-time inventory check of equipment Real-time inventory check of equipment Tag matching before moving a patient out Tag matching before moving a patient out 6/2/201431

32 Movement of Patient Distinguish between the movement of a patient through a door from those walking near the door 6/2/201432

33 Corridor Energizer turned on by motion detection Energizer turned on by motion detection High gain antenna and low power output High gain antenna and low power output Multiple antennas for better coverage Multiple antennas for better coverage Active signage: VIP acknowledgement Active signage: VIP acknowledgement Walking instructions: emergence Walking instructions: emergence Record of personnel movement Record of personnel movement 6/2/201433

34 Operation Theater Access for patient and staff at the right time only Access for patient and staff at the right time only Match of physicians and the patient Match of physicians and the patient Verification of the patient and the treatments Verification of the patient and the treatments Double check of additional equipment needed Double check of additional equipment needed Account of accessories/consumables used Account of accessories/consumables used 6/2/201434

35 Other Tags Tags with GPS and GPRS for patients with Alzheimer disease in infirmary Tags with GPS and GPRS for patients with Alzheimer disease in infirmary Durable tags for equipment Durable tags for equipment Passive RFID tags for out-patients Passive RFID tags for out-patients 6/2/201435

36 Mass Control Reception hall for incoming patients Reception hall for incoming patients Medical treatments Medical treatments Pharmacy/dispenser Pharmacy/dispenser Physiotherapeutic services Physiotherapeutic services Shroff/bursary Shroff/bursary Cafeteria/canteen Cafeteria/canteen Disaster control/Escape route 6/2/201436

37 Future Development Tag on soft waist-band or ankle-band Tag on soft waist-band or ankle-band Application specific integrated circuits Application specific integrated circuits Handheld reader for active and passive tags Handheld reader for active and passive tags Tag with organic liquid crystal display Tag with organic liquid crystal display Lithium polyester battery Lithium polyester battery Wireless battery charger Wireless battery charger Passive tag on medicine for out-patients Passive tag on medicine for out-patients Passive tag on consumables Passive tag on consumables 6/2/201437

38 Passive RFID Tags Passive tags on medicine for out-patients Tiny passive tags for consumables 6/2/201438

39 Questions and Answers Thank You 6/2/2014 39


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