This work presents a sensor system to monitoring a patient vital signs remotely. The proposed sensor network architecture is based on IEEE 802.15.4 PAN technology with start topology. An experimental set-up was implem...
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ISBN:
(纸本)9789898111173
This work presents a sensor system to monitoring a patient vital signs remotely. The proposed sensor network architecture is based on IEEE 802.15.4 PAN technology with start topology. An experimental set-up was implemented including the development of some biological sensors. In the implementation stage we use Xbee modules, the remote sensors was configured as RFD devices and the network coordinator as FFD device. As central device a smart phone was used. From the results, we conclude that the IEEE 802.15.4 technology is appropriate for medical WPAN sensor network implementation.
Novel sensor-based continuous biomedical monitoring technologies have a major role in chronic disease management for early detection and prevention of known adverse trends. In the future, a diversity of physiological,...
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ISBN:
(纸本)9789898111166
Novel sensor-based continuous biomedical monitoring technologies have a major role in chronic disease management for early detection and prevention of known adverse trends. In the future, a diversity of physiological, biochemical and mechanical sensing principles will be available through sensor device 'ecosystems'. In anticipation of these sensor-based ecosystems, we have developed Healthcare@Home (HH) - a research-phase generic intervention-outcome monitoring framework. HH incorporates a closed- loop intervention effect analysis engine to evaluate the relevance of measured (sensor) input variables to system-defined outcomes. HH offers real-world sensor type validation by evaluating the degree to which sensor-derived variables are relevant to the predicted outcome. This 'index of relevance' is essential where clinical decision support applications depend on sensor inputs. HH can help determine system-integrated cost-utility ratios of bespoke sensor families within defined applications - taking into account critical factors like device robustness / reliability / reproducibility, mobility / interoperability, authentication / security and scalability / usability. Through examples of hardware / software technologies incorporated inthe HH end-to-end monitoring system, this paper discusses aspects of novel sensortechnology integration for outcome-based risk analysis in diabetes.
This paper presents a novel miniature sensing tip structure for various biomedical applications. With such a tiny tip, the sensor has potential to be inserted into cells for intracellular measurements without any labe...
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ISBN:
(纸本)9780819469199
This paper presents a novel miniature sensing tip structure for various biomedical applications. With such a tiny tip, the sensor has potential to be inserted into cells for intracellular measurements without any label as indicator. This label-free detection method is very useful in biological areas such as DNA hybridization detection and antigen-antibody interaction monitoring. Single-cell analysis (SCA) technology can provide dynamic analysis of interactions within individual living cells, in addition to providing a complement to conventional bulk cell assays. When the number of sample cells obtained from surgical procedures is limited, and cannot be propagated for study, SCA is especially important. It provides a valuable tool for intracellular studies that have applications ranging from medicine to national security. In addition, the sensor fabrication is simple and has potential for batch manufacturing. The sensor performance will be reproducible and uniform. Uniformity and reproducibility are two very important requirements for sensor manufacturing. Unfortunately, most current optical fiber sensors are hand-made one by one, and the sensors' performance is not easy to be uniform. Our novel sensor will be able to address this problem. This may lead to batch processing and a great reduction of the fabrication cost.
A new temperature sensing technique based on high-resolution reflection measurement in a fiber optic system is demonstrated. The technique adopts thermoreversible compounds as a transducer in a fiber-optic temperature...
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ISBN:
(纸本)9780819469199
A new temperature sensing technique based on high-resolution reflection measurement in a fiber optic system is demonstrated. The technique adopts thermoreversible compounds as a transducer in a fiber-optic temperature sensor system. The dependence of the light reflection on the temperature has been studied. The reflected optical power indicated a change in the temperature range of observation, corresponding to a change of 15.3dB in the reflection signal when the temperature increased from 20 degrees C to 140 degrees C. The temperature dependence of the optical properties was found to be reversible, which indicates that the temperature transducer is reversible as well.
Fiber optic based sensor technologies have many significant advantages over electrochemical sensors, and as a result have broad application for sensing in biology, agriculture and medicine. An important component of f...
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ISBN:
(纸本)9780819469199
Fiber optic based sensor technologies have many significant advantages over electrochemical sensors, and as a result have broad application for sensing in biology, agriculture and medicine. An important component of fiber optic biosensor is the sensing element. Usually, a polymer matrix containing the analyte specific fluorescent dye is immobilized on one end of the fiber optic probe. The polymer matrix provides mechanical stability to the immobilized membrane and entraps the fluorescent dye molecules. The target analyte diffuses into the membrane polymer and quenches the fluorescent dye. This optical interaction between the analyte and fluorescent dye dynamically changes the fluorescence lifetime of the dye. These changing fluorescent lifetimes reveal information about the target analyte concentration. Although the fluorescent lifetime of the dye is of primary interest, high signal-to-noise ratio (SNR) is also very desirable. Conventionally, complex electronics is implemented to achieve high SNR_ Various signal processing methods such as signal amplification and filtering are implemented to achieve high SNR_ In this study, we report optical signal amplification by modification of the dye-polymer matrix by addition of titanium oxide particles. The addition of titanium oxide particles enhanced the optical signal intensity. Optical performances of different sizes and concentrations of titanium oxide particles are compared. We believe that this increased optical intensity is due to increased optical scattering in the dye-polymer matrix. We also compare the performance of titanium oxide particles to gold and other material particles to experimentally probe the exact nature of light scattering in the dye-polymer matrix.
Personal Robots and Robot technology (RT)-based assistive devices are expected to play a major role in Japan's elderly-dominated society, both for joint activities with their human partners and for participation i...
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ISBN:
(纸本)9781424412631;1424412633
Personal Robots and Robot technology (RT)-based assistive devices are expected to play a major role in Japan's elderly-dominated society, both for joint activities with their human partners and for participation in community life. These new devices should be capable of smooth and natural adaptation and interaction with their human partners and the environment, should be able to communicate naturally with humans, and should never have a negative effect on their human partners, neither physical nor emotional. To achieve this smooth and natural integration between humans and robots, we need first to investigate and clarify how these interactions are carried out. Therefore, we developed the portable Bioinstrumentation System WB-1R (Waseda Bioinstrumentation system no.1 Refined), which can measure the movements of the head, the arms, the hands (position, velocity, and acceleration), as well as several physiological parameters (electrocardiogram, respiration, perspiration, pulse wave, and so on), to objectively measure and understand the physical and physiological effects of the interaction between robots and humans. In this paper we present our development of the head and hands motion capture systems as additional modules for the Waseda Bioinstrumentation system No.1 (WB-1). The preliminary experimental results, given the inexpensiveness of the systems, are good for our purposes.
Some reports show that the physiological information measured in hospital is not enough without the one measured in home. The physiological information monitored in home, therefore, is strongly required recently. The ...
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ISBN:
(纸本)0819460729
Some reports show that the physiological information measured in hospital is not enough without the one measured in home. The physiological information monitored in home, therefore, is strongly required recently. The goal of this research is to develop a wearable and tractable sensor system for detecting biomedical signals such as cardiac rhythm, respiration, body movement, and percentage of body fat (%BF) and for home health care. A belt type sensor for this purpose is developed, which consists of sensing materials of PVDF film and conductive fabrics. Also several data processing techniques, such as the discrete wavelet transform, cross correlation and adaptive filtering method, were introduced to eliminate noises and base wandering and to extract the specified components. The ECG and respiration signals obtained by the proposed belt type sensor system gave good agreements with commercial medical system. Furthermore, the body fat (%BF) measurement based on the four-electrode BIA was also built in the belt sensor. The body fat was calculated by measuring the body impedance from the belt type sensor and compared with the predicted %BF measured by the commercial adipometer (TBF-607). The results validated also the efficiency of the belt type sensor system.
Recent advances in wireless communication technologies, smartsensors and high-performance low-power microprocessors opened space for applications in many different areas, such as medicine. Putting together these tech...
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Recent advances in wireless communication technologies, smartsensors and high-performance low-power microprocessors opened space for applications in many different areas, such as medicine. Putting together these technologies to meet functional specification of the applications and operation requirements still presents many challenges, mainly due to limited power supply. This paper presents research challenges and solutions for a biomedicalsensor application. Novel features have been included in a system for real-time remote monitoring of physiological signals (electrocardiogram, blood oxygen level, and blood pressure), improving its functionality, performance, and power management. The concept of quality of service (QoS) is applied to power management, which is focused on the application parameters.
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