Browsing by Author "Liu, Jing"
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- ItemBiomedical implementation of liquid metal ink as drawable ECG electrode and skin circuit.(2013-03-08) Yu, Yang; Zhang, Jie; Liu, JingBACKGROUND Conventional ways of making bio electrodes are generally complicated expensive and unconformable Here we describe for the first time the method of applying Ga based liquid metal ink as drawable electrocardiogram ECG electrodes Such material owns unique merits in both liquid phase conformability and high electrical conductivity which provides flexible ways for making electrical circuits on skin surface and a prospective substitution of conventional rigid printed circuit boards PCBs METHODS Fundamental measurements of impedance and polarization voltage of the liquid metal ink were carried out to evaluate its basic electrical properties Conceptual experiments were performed to draw the alloy as bio electrodes to acquire ECG signals from both rabbit and human via a wireless module developed on the mobile phone Further a typical electrical circuit was drawn in the palm with the ink to demonstrate its potential of implementing more sophisticated skin circuits RESULTS With an oxide concentration of 0 34 the resistivity of the liquid metal ink was measured as 44 1 cm with quite low reactance in the form of straight line Its peak polarization voltage with the physiological saline was detected as 0 73 V The quality of ECG wave detected from the liquid metal electrodes was found as good as that of conventional electrodes from both rabbit and human experiments In addition the circuit drawn with the liquid metal ink in the palm also runs efficiently When the loop was switched on all the light emitting diodes LEDs were lit and emitted colorful lights CONCLUSIONS The liquid metal ink promises unique printable electrical properties as both bio electrodes and electrical wires The implemented ECG measurement on biological surface and the successfully run skin circuit demonstrated the conformability and attachment of the liquid metal The present method is expected to innovate future physiological measurement and biological circuit manufacturing technique in a large extent
- ItemM-HELP: a miniaturized total health examination system launched on a mobile phone platform.(2013-10-29) Yu, Yang; Li, Jingjing; Liu, JingBACKGROUND A timely health examination is of great significance for incipient disease detection and prevention However conventional examinations generally rely heavily on bulky and expensive instrumentation which is not easily available To address technical barriers an innovative highly miniaturized and integrated health examination system Mobile Health Examination Launched on the Phone M HELP was developed MATERIALS AND METHODS Based on the design of a multifunctional Android Google Mountain View CA application and the development of different wireless biomedical sensor modules a mobile phone was incorporated into a central terminal for personal health examination More than 12 parameters including electrocardiogram heart sound and eye test as well as others covered the majority of the crucial parameters in a total health examination and have been successfully established and incorporated into the system Unlike the conventional examination the M HELP system could generate electronic health records and send them to physicians via e mails or multimedia messages This significantly simplifies the general health examination with much lower cost and fewer temporal and spatial restrictions RESULTS For proof of concept a bench scale test recruiting 11 volunteer subjects showed that the average time spent on a total health examination with M HELP system was about 28 min CONCLUSIONS This article clarifies the basic concept of a total health examination on the platform of a mobile phone demonstrates the basic features of the M HELP system with group tests and suggests the practical future application of the new system and the scientific issues thus raised
- Item[Mobile phone based data acquisition and evaluation system for the alternative four diagnostic methods of traditional Chinese medicine].(2013-05-14) Yang, Jun; Liu, Jing; Liu, RanThis study is dedicated to integrate the theories of the four diagnostic methods of TCM and the methods of mobile healthcare so as to achieve the goal of the four diagnostic functions of TCM on mobile phone An Android smartphone based data acquisition system has been developed and experimentally demonstrated It was shown that the prototype could successfully achieve the fundamental function of the four diagnostic methods of TCM and thus help preliminarily interpret the symptoms of human diseases
- Item[Mobile phone based liquid crystal thermal imaging method and its medical implementation].(2010-12-22) Huang, Shuo; Liu, JingIn this paper a new medical imaging strategy based on mobile phone is developed to obtain the quantitative temperature mappings of human skin The visual images reflected by the TLC pre painted on human skin are captured by the camera of mobile phone and transformed to the thermographies of human skin through digital image processing method according to the Temperature Hue curve pre established in the calibration experiment The mobile phone acquired imaging is then applied to reconstruct the temperature distribution of dorsal hand and for thermodynamic check Additional thermal parameters related to body health status are calculated based on the bioheat transfer model of human body The present method is expected to be developed as a pervasive and low cost way to map the skin temperature imaging of human body
- Item[Mobile phone based wireless microscopy imaging technology].(2011-06-27) Yuan, Yucheng; Liu, JingThis article proposes a new device named Wireless Cellscope that combining mobile phone and optical microscope together The established wireless microscope platform consists of mobile phone network monitor miniaturized microscope or high resolution microscope etc A series of conceptual experiments were performed on microscopic observation of ordinary objects and mice tumor tissue slices It was demonstrated that the new method could acquire microscopy images via a wireless way which is spatially independent With small size and low cost the device thus developed has rather wide applicability in non disturbing investigation of cell tissue culture and long distance observation of dangerous biological sample etc
- Item[Mobile phone platform for wireless monitoring of human dynamic plantar pressure].(2011-03-01) Wang, Hao; Han, Meng; Liu, JingThis paper constructed a plantar pressure sensing system based on Bluetooth communication of mobile phone with embedded Windows Mobile system With the MCU Microprocessor Control Unit and Bluetooth module the pressure sensor and the data acquisition circuit was designed and integrated with software developed under Visual Studio 2008 environment The real time monitoring of human dynamic plantar pressure signal and transferring displaying and storing the recorded data on a mobile phone were achieved This method offers an important measure to acquire human gait information via a pervasive and low cost way
- Item[Mobile phone-computer wireless interactive graphics transmission technology and its medical application].(2010-09-03) Huang, Shuo; Liu, JingApplication of clinical digital medical imaging has raised many tough issues to tackle such as data storage management and information sharing Here we investigated a mobile phone based medical image management system which is capable of achieving personal medical imaging information storage management and comprehensive health information analysis The technologies related to the management system spanning the wireless transmission technology the technical capabilities of phone in mobile health care and management of mobile medical database were discussed Taking medical infrared images transmission between phone and computer as an example the working principle of the present system was demonstrated
- ItemMobile phone-enabled control of medical care and handicapped assistance.(2011-10-27) Liu, Lin; Liu, JingMobile phones are now playing an ever more crucial role in people s daily lives They are serving not only as a way of talking and delivering messages but also for exchanging various information Nevertheless the functional limit of the phone is still far from being reached Among the many promising applications using mobile phones as an actuating element to control data or devices is useful in quite a few emerging medical care and handicapped assistance settings owing to its wireless communication feature In this article selected progresses of mobile phone enabled controlling have been summarized with more focus on evaluating its emerging roles in medical care Several typical applications in the area are illustrated and some potential technical challenges and key issues worthy of pursuit are outlined The intent of the article is to provide an elementary knowledge for people with different backgrounds such as electrical or biomedical engineers as well as people who are working on interdisciplinary areas It is expected that medical care at any time and anywhere will be possible via the actuation platform provided by the mobile phone and mobile medicine will be pushed forward to a new height in the coming years
- Item[Realization of a compact mobile phone based wireless plantar pressure monitoring system and application].(2012-08-24) Liu, Lin; Liu, JingAn improved compact mobile phone based wireless plantar pressure monitoring system and software are proposed based on former progress which can collect pressure data by sensors and circuit board transmit data through Bluetooth wirelessly and display and calculate the data on the mobile terminal Conceptual experiments carried out demonstrate the feasibility and accuracy of the new system The system is expected to be widely used in the future owing to its portability ease of use and cost effectiveness
- Item[Realization of mobile phone based wireless blood pressure monitoring system and its preliminary implementation].(2012-03-02) Wang, Shuo; Gong, Eenhao; Yu, Yang; Liu, JingA novel system which could measure blood pressure wirelessly through mobile phone has been proposed and developed It consisted of a blood pressure signal recorder based on MCU Micro Control Unit which could transmit measured data via Bluetooth and a software embedded on mobile phone which could calculate the value of blood pressure and the rate of heart beat The measurement results could easily be stored in text documents or in picture format Detailed scheme and design of each module in the system was illustrated and experiments were conducted to demonstrate the reliability and stability of the device A series of new conceptual explorations into blood pressure related issues were conducted with this system including the variational blood pressure at different time periods in a day the effect of posture on the measurement results and the impact of movements on blood pressure
- Item[Study on mobile phone based wireless ECG monitoring technology system realization and performance test].(2011-03-01) Yu, Yang; Liu, JingThis paper introduces a novel mobile phone based wireless real time ECG monitoring system And experiments were conducted to demonstrate the reliability and stability of the device This novel system not only addresses the contradiction between continuous monitoring and device cost but also represents advanced concepts of low cost medicine and personal health management
- Item[Study on mobile phone based wireless ECG monitoring technology system typical demonstration applications].(2011-05-09) Yu, Yang; Liu, JingBased on the mobile phone platform with wireless real time ECG monitoring system developed in our lab this article is dedicated to evaluate its practical value in people test A series of new conceptual experiments were designed and performed Particularly ECG characteristics under different age gender health and motion conditions are evaluated Effects of living habits such as drinking wine coffee including various psychological conditions such as excitation anxiety etc to the ECG response are investigated The human ECG under different time in a day such as morning afternoon and late night was evaluated These conceptual experiments which are hard to conduct otherwise using conventional devices demonstrate the pervasive merits of the new system for fundamental study of heart disease as well as daily healthcare
- Item[Study on mobile phone enabled wireless detection of saliva glucose].(2012-01-16) Li, Jingjing; Yu, Yang; Lu, Yongqiang; Liu, JingIn this study based on the correlation between the blood and saliva glucose we proposed and developed a new conceptual method of using mobile phone to measure wirelessly the glucose concentration in saliva According to the experiments on simulated saliva the new system could draw display store and carry out calculation on the correlation curves between saliva glucose and electrical parameters This demonstrates the feasibility and bright future of the new technique