Browsing by Author "Maki, Hiromichi"
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- ItemA daily living activity remote monitoring system for solitary elderly people.(2012-01-18) Maki, Hiromichi; Ogawa, Hidekuni; Matsuoka, Shingo; Yonezawa, Yoshiharu; Caldwell, W MortonA daily living activity remote monitoring system has been developed for supporting solitary elderly people The monitoring system consists of a tri axis accelerometer six low power active filters a low power 8 bit microcontroller MC a 1GB SD memory card SDMC and a 2 4 GHz low transmitting power mobile phone PHS The tri axis accelerometer attached to the subject s chest can simultaneously measure dynamic and static acceleration forces produced by heart sound respiration posture and behavior The heart rate respiration rate activity posture and behavior are detected from the dynamic and static acceleration forces These data are stored in the SD The MC sends the data to the server computer every hour The server computer stores the data and makes a graphic chart from the data When the caregiver calls from his her mobile phone to the server computer the server computer sends the graphical chart via the PHS The caregiver s mobile phone displays the chart to the monitor graphically
- ItemAn electronic communication system for amyotrophic lateral sclerosis patients - biomed 2013.(2013-05-20) Murakami, Atsushi; Maki, Hiromichi; Ogawa, Hidekuni; Tsukamoto, Sosuke; Yonezawa, Yoshiharu; Hahn, Allen W; Caldwell, W MortonAmyotrophic lateral sclerosis is a progressive degeneration of motor neurons Patients with the disease lose their ability to speak and to use their hands as the disease progresses We have developed a new electronic communication system that enables communication by blinking of the eyes The system consists of a light emitting diode LED two silicone rubber electrodes an electrooculogram EOG recorder a microcontroller a sound reproduction board a pillow speaker and a low power mobile phone The two silicone rubber electrodes record the EOG induced by blinking the eyes synchronized with LED flashing The EOG is amplified by the EOG recorder The microcontroller detects the blinking from the amplified EOG and then their meanings are confirmed by voice After that the patient s intention is transmitted to the nurse by a low power mobile phone so the care giver is kept in the loop
- ItemAn electronic location safety support system.(2007-05-09) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Hahn, Allen W; Caldwell, W MortonWe have developed an electronic safety support system to assist in the care of elderly people The system uses a low power mobile phone PHS and a server computer The PHS is carried by the subjects and their location is identified within 100 m from the PHS antenna ID The caregiver sets the patient s movement area with specialized computer software When the patient leaves the area the system automatically informs the caregiver via voice mode and sends the patient s location map by e mail The caregiver can monitor the current location and prior movement by the map displayed on server computer
- ItemA Java mobile phone-based "Home Helper" care report creation support system.(2004-05-11) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Sato, Haruhiko; Hahn, Allen W; Caldwell, W MortonIn Japan Home Helpers are employed by hospitals care companies or the welfare office and are sent to the homes of elderly persons to provide home welfare and care services They are required to input their reports into the computer at their central office after each care visit We developed a new Java mobile phone based Home Helper care report creation support system for reducing the data entry time and the communication costs of their reports The system consists of a Java mobile phone for each Home Helper and a server computer at their office The server computer sends a Java care report creation support program to the Java mobile phone The program runs on the mobile phone and supports the report creation in a short time Therefore the developed system enables easy report entry by the Home Helper and saves a significant amount of time and communication costs
- ItemA mobile phone-based Communication Support System for elderly persons.(2007-11-16) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Caldwell, W MortonA mobile phone based communication support system has been developed for assisting elderly people to communicate by mobile phone The system consists of a low power mobile phone PHS phone having a large liquid crystal screen When an elderly person telephones they then choose a communication person from registered support personnel pictures displayed on the liquid crystal screen The PHS phone dials that person automatically The elderly person can therefore easily recognize and verify the person The newly developed communication support system assists a significant percentage of elderly people with poor eyesight and memory which frequently cause communication problems such as dialing a wrong number
- ItemA mobile phone-based ecg and heart sound monitoring system - biomed 2011.(2011-04-28) Iwamoto, Junichi; Ogawa, Hidekuni; Maki, Hiromichi; Yonezawa, Yoshiharu; Hahn, Allen W; Caldwell, W MortonWe have developed a telemedicine system to monitor a patient s electrocardiogram ECG and heart sounds PCG during daily activity The complete system consisting of an ECG recorder an accelerometer and a 2 4 GHz low power mobile phone is mounted on three chest sensing electrodes The accelerometer records the PCG produced by closing of the mitral and aortic valves S1 and S2 The sampled ECG and PCG are stored in the system for two minutes and continuously updated When a patient feels heart discomfort such as angina or an arrhythmia he she pushes the data transmission switch on the system The ECG and PCG for the next two minutes are stored in the system and then the system then sends the four minutes of stored data directly to a hospital server computer via the 1 9 GHz low power mobile phone These data are stored on the server and then downloaded to the physician s Java configured mobile phone The physician can then check the patient s cardiac condition regardless of patient or physician locations and then take appropriate actions
- ItemA mobile phone-based ECG monitoring system.(2006-07-04) Iwamoto, Junichi; Yonezawa, Yoshiharu; Maki, Hiromichi; Ogawa, Hidekuni; Ninomiya, Ishio; Sada, Kouji; Hamada, Shingo; Hahn, Allen W; Caldwell, W MortonWe have developed a telemedicine system for monitoring a patient s electrocardiogram during daily activities The recording system consists of three ECG chest electrodes a variable gain instrumentation amplifier a low power 8 bit single chip microcomputer a 256 KB EEPROM and a 2 4 GHz low transmitting power mobile phone PHS The complete system is mounted on a single lightweight chest electrode array When a heart discomfort is felt the patient pushes the data transmission switch on the recording system The system sends the recorded ECG waveforms of the two prior minutes and ECG waveforms of the two minutes after the switch is pressed directly in the hospital server computer via the PHS The server computer sends the data to the physician on call The data is displayed on the doctor s Java mobile phone LCD Liquid Crystal Display so he or she can monitor the ECG regardless of their location The developed ECG monitoring system is not only applicable to at home patients but should also be useful for monitoring hospital patients
- ItemA mobile phone-based safety support system for wandering elderly persons.(2007-02-02) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Sato, Haruhiko; Morton Caldwell, WA new safety support system has been developed to detect and transmit notification of a wandering elderly person s location The system employs a low transmitting power mobile phone PHS and a personal computer PC The PHS is carried with the elderly person as a pendant The PHS location is identified within 100 m from the receiving antenna ID Therefore the system can detect whether the wandering elderly person is in or out of their home When the wandering elderly person is away from home the system automatically informs the caregiver via voice mode and sends the wandering elderly person s location map by e mail
- ItemA new communication support system employing a tablet computer.(2006-07-04) Minami, Takashi; Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Hahn, Allen W; Caldwell, W MortonA new communication support system has been developed for assisting elderly people communicating by telephone and e mail The system consists of a conventional tablet computer a computer telephony interface board a microphone a speaker a telephone line and the Internet The tablet liquid crystal screen TLCS is used as a display device and an entry device instead of a keyboard When an elderly person telephones or sends an email they then choose a communication person from the registered support personnel pictures displayed on the TLCS The computer dials or sends e mail which is directly handwritten on the TLCS When their home system receives a telephone call or e mail the computer displays the calling communication person s picture and name on the TLCS The elderly person can therefore easily recognize and verify the person Since this newly developed communication support system does not employ a keyboard it is easily operated by elderly persons
- ItemA new intelligent bed care system for hospital and home patients.(2005-08-22) Yonezawa, Yoshiharu; Miyamoto, Yasuaki; Maki, Hiromichi; Ogawa, Hidekuni; Ninomiya, Ishio; Sada, Kouji; Hamada, Shingo; Caldwell, W MortonAn intelligent bed care system has been developed for monitoring patient movements and behavior in the hospital and at home in order to prevent injuries from falls a major problem in health care facilities Falls as well as patient activity immediately preceding falls i e exiting the bed are especially dangerous when infusion extubation also occurs This new system detects in bed infusion fluid leaks bleeding due to infusion tube pullout and urine resulting from incontinence It employs stainless steel tape and wire noncontacting electrodes several linear integrated circuits and a low power 8 bit single chip microcomputer The electrodes are installed between the bed mattress and sheet to record changes in an always present alternating current AC voltage which is induced on the patient s body by electrostatic coupling from a 100 V 60 Hz alternating current power line around the bed The microcomputer uses changes in the induced alternating current voltage to detect the patient s movements before and after leaving the bed as well as any fluid leakage The microcomputer alerts the nursing station via the nurse call system or personal handy phone PHS that the patient is in an active state has a dangerous posture on the bed is contaminating the sheet due to leaking bleeding or incontinence or is out of bed
- ItemA new microcomputer-based safety and life support system for solitary-living elderly people.(2003-05-02) Miyauchi, Kosuke; Yonezawa, Yoshiharu; Maki, Hiromichi; Ogawa, Hidekuni; Hahn, Allen W; Caldwell, W MortonA new safety and life support system has been developed to detect emergency situations of solitary living elderly persons The system employs a dual axis accelerometer two low power active filters a low power 8 bit single chip microcomputer and a personal handy phone Body movements due to walking running and posture changes are detected by the dual axis accelerometer and sent to the microcomputer If the patient is in an inactive state for 5 minutes after falling or for 64 minutes without previously falling then the system automatically alarms the emergency situation via the personal handy phone to the patient s family the fire station or the hospital
- ItemA new safety support system for wandering elderly persons.(2012-01-18) Matsuoka, Shingo; Ogawa, Hidekuni; Maki, Hiromichi; Yonezawa, Yoshiharu; Caldwell, W MortonWe have developed a new mobile phone based safety support system for transmitting information of a wandering elderly person s location and the environmental sounds around that person The system consists of a wearable sensor and a conventional desktop PC with Internet access acting as the server computer The wearable sensor which is attached behind the neck of the elderly person s shirt is composed of a low transmitting power mobile phone W SIM a small microphone and a one chip microcontroller The wandering elderly person s location is identified within 100 m from the mobile phone company s antenna ID via the W SIM The caregiver sets the elderly person s movement area by specialized computer software When the elderly person goes out of the area the sensor automatically records the environmental sound around the wandering elderly person for the presumption of the person s situation with the small microphone The W SIM sends both the wandering elderly person s location and the environmental sound to the server computer The server computer informs automatically the caregiver by the e mail The caregiver can monitor the sound and the map of the wandering person s location via Internet The sound enables the presumption of an accurate location and the situation of the wandering elderly person
- ItemA new venous infusion pathway monitoring system.(2007-11-16) Maki, Hiromichi; Yonezawa, Yoshiharu; Ogawa, Hidekuni; Ninomiya, Ishio; Sata, Koji; Hamada, Shingo; Caldwell, W MortonA new infusion catheter pathway monitoring system employing linear integrated circuits and a low power 8 bit single chip microcomputer has been developed for hospital and home use The sensor consists of coaxial three layer conductive tapes wrapped around the polyvinyl chloride infusion tube The inner tape is the main electrode which records an AC alternating current voltage induced on the patient s body by electrostatic coupling from the normal 100 volt 60 Hz AC power line wiring field in the patient s room The outside tape layer is a reference electrode to monitor the AC voltage around the main electrode The center tape layer is connected to system ground and functions as a shield The microcomputer calculates the ratio of the induced AC voltages recorded by the main and reference electrodes and if the ratio indicates a detached infusion alerts the nursing station via the nurse call system or low transmitting power mobile phone
- ItemA remote access ecg monitoring system - biomed 2009.(2009-04-16) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Iwamoto, Junichi; Hahn, Allen W; Caldwell, W MortonWe have developed a remotely accessible telemedicine system for monitoring a patient s electrocardiogram ECG The system consists of an ECG recorder mounted on chest electrodes and a physician s laptop personal computer This ECG recorder is designed with a variable gain instrumentation amplifier a low power 8 bit single chip microcomputer two 128KB EEPROMs and 2 4 GHz low transmit power mobile telephone When the physician wants to monitor the patient s ECG he she calls directly from the laptop PC to the ECG recorder s phone and the recorder sends the ECG to the computer The electrode mounted recorder continuously samples the ECG Additionally when the patient feels a heart discomfort he she pushes a data transmission switch on the recorder and the recorder sends the recorded ECG waveforms of the two prior minutes and for two minutes after the switch is pressed The physician can display and monitor the data on the computer s liquid crystal display
- ItemA safety support system for patient location.(2009-01-14) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Hahn, Allen W; Caldwell, W MortonWe have developed a new electronic location support system for wandering elderly patients who may be walking be stationary or moving at higher speed in vehicles Our system functions in buildings and uses a low power mobile phone terminal along with a caregiver s mobile phone The system is carried by the patient whose location is detected from the location of the system antennae communicating with the person s mobile phone system PHS The caregiver sets the patient s movement area with specialized computer software installed on the mobile phones When the patient leaves this preset area the system automatically informs the caregiver and sends the patient s location map by e mail The caregiver can monitor the current location and prior movement by the map displayed on their mobile phone The system is not only applicable to wandering elderly patients but could also be very useful for monitoring children and elderly people living alone
- ItemA wearable, mobile phone-based respiration monitoring system for sleep apnea syndrome detection.(2005-04-26) Ishida, Ryoichi; Yonezawa, Yoshiharu; Maki, Hiromichi; Ogawa, Hidekuni; Ninomiya, Ishio; Sada, Kouji; Hamada, Shingo; Hahn, Allen W; Caldwell, W MortonA new wearable respiration monitoring system has been developed for non invasive detection of sleep apnea syndrome The system which is attached to a shirt consists of a piezoelectric sensor a low power 8 bit single chip microcontroller EEPROM and a 2 4 GHz low power transmitting mobile phone PHS The piezoelectric sensor whose electrical polarization voltage is produced by body movements is installed inside the shirt and closely contacts the patient s chest The low frequency components of body movements recorded by the sensor are mainly generated by respiration The microcontroller sequentially stores the movement signal to the EEPROM for 5 minutes and detects by time frequency analysis whether the patient has breathed during that time When the patient is apneic for 10 sseconds the microcontroller sends the recorded respiration waveform during and one minute before and after the apnea directly to the hospital server computer via the mobile phone The server computer then creates apnea filings automatically for every patient The system can be used at home and be self applied by patients Moreover the system does not require any extra equipment such as a personal computer PDA or Internet connection
- ItemA web-based care-requiring client and Home Helper mutual support system.(2005-04-26) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Hahn, Allen W; Caldwell, W MortonFor the improved efficiency of home care of the elderly a web based system has been developed to enable faster communications between care requiring clients their Home Helper and the care manager Changes to care items such as cooking bathing washing cleaning and shopping are usually requested by the elderly client over the telephone However the care central office often requires 24 hours to process and respond to such spoken requests The system we have developed consists of Internet client computers with liquid crystal input tablets wireless Internet Java enabled mobile phones and a central office server that yields almost instant communication The care clients enter requests on the liquid crystal tablet at their home and then their computer sends these requests to the server at the Home Helper central office The server automatically creates a new file of the requested items and then immediately transfers them to the care manager and Home Helper s mobile phone With this non vocal and paperless system the care requiring clients who can easily operate the liquid crystal tablet can very quickly communicate their needed care change requests to their Home Helper
- ItemA Web-based home welfare and care services support system using a pen type image sensor.(2003-05-02) Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Sato, Haruhiko; Hahn, Allen W; Caldwell, W MortonA long term care insurance law for elderly persons was put in force two years ago in Japan The Home Helpers who are employed by hospitals care companies or the welfare office provide home welfare and care services for the elderly such as cooking bathing washing cleaning shopping etc We developed a web based home welfare and care services support system using wireless Internet mobile phones and Internet client computers which employs a pen type image sensor The pen type image sensor is used by the elderly people as the entry device for their care requests The client computer sends the requests to the server computer in the Home Helper central office and then the server computer automatically transfers them to the Home Helper s mobile phone This newly developed home welfare and care services support system is easily operated by elderly persons and enables Homes Helpers to save a significant amount of time and extra travel
- ItemA welfare facility resident care support system.(2004-05-11) Maki, Hiromichi; Yonczawa, Yoshiharu; Ogawa, Hidekuni; Sato, Haruhiko; Hahn, Allen W; Caldwell, W MortonWe have developed a new care support system to monitor the overall health of welfare facility residents who need constant care The system is designed with wireless sensors wireless repeaters and a host computer The wireless sensor which consists of a piezoelectric sensor a 2 axis accelerometer a microcontroller and a low power 303 MHz ASH transceiver It records respiration activity and indicators of posture and behavior for 24 hours These data are transmitted to the wireless repeater by the transceiver The wireless repeaters which are installed throughout the welfare facility send data including the repeater s ID to the host computer The ID is used to detect the resident s location in the welfare facility The host computer stores the data which can be used to analyze the resident s overall health condition When the resident is in an emergency situation such as falling or in an inactive state for more that the allotted time the host computer automatically alerts the situation to the care staff by an alarm sound and also by mobile phone