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The typical models and algorithms of energy saving control for a train are introduced and summarized. According to one of energy-efficient mathematical models which usually use GA algorithm to solve, a new algorithm based on particle swarm optimization is applied for the model. Through calculation for a cited example, simulation results such as speed-position curve are got. Compared with other methods,...
To improve the quality of images collected by the wireless capsule endoscope (WCE) and to decrease the system energy consumption, we proposed a novel design of WCE. This WCE system integrates a CMOS sensor with an optional JPEG compression engine, a low power consumption high-performance micro-controller and an ultra low power RF transceiver in a small capsule (less than 10 mm × 25 mm). Experiment...
Camera calibration is a necessary step in 3D computer vision in order to extract metric information from 2D images. In the camera calibration applying to multi-camera localization, it's prerequisite that all cameras, which mounted apart from each other, must observe the whole calibration object simultaneously. However, it's inconvenient to satisfy using traditional 3D or 2D calibration objects. In...
In electrocardiogram real-time monitoring, the ST segment detection is important, it has close relationship with myocardial ischemia and myocardial infarction. In this paper, ST detection is divided into two parts, firstly using wavelet and morphology method to calculate the offset direction, waveform and summarizing features of ST, eventually divide the ST in 15 types; next analyzing the ST waveform...
The problem of robust H∞ filtering for polytopic Delta operator systems is investigated. An enhanced linear matrix inequality (LMI) representation for H∞ performance criterion is presented based on the bounded real lemma by introducing two slack matrices. Upon this criterion, a structured polynomially parameter-dependent approach is proposed to solve robust H∞ filtering problem, which is realized...
Automated External Defibrillators (AED) are basic portable defibrillators that are designed for minimally-trained or untrained non-medical personnel. A microprocessor inside the defibrillation automatically analyzes the patient's heart rhythm and advises the operator whether a shock is needed. Audible and visual prompts will guide the user through the process. AED would advise a shock only to ventricular...
A new method for pulse wave filter is proposed on the basis of wavelet transform soft-threshold denoising and wavelet adaptive algorithm in this paper. The wavelet soft-threshold filter and wavelet adaptive filter are made as combination filter system, after the high frequency noises are eliminated with wavelet soft-threshold denoising, the baseline drift is removed by wavelet adaptive filter, and...
Wireless capsule endoscopy (WCE) is a great breakthrough for Gastrointestinal (GI) Tract diagnoses, and it can view the entire gastrointestinal tract, especially the small bowel, without invasiveness and sedation. However, a tough problem associated with this new technology is that too many images to be inspected by naked eyes cause a huge burden to physicians, so it is significant to find an automatic...
View of current lack of health examination equipment in the rural area, we present a portable, integrated, multi-functional health examination package based on the Loogson-2F CPU for physical examination in the rural area. In this paper, we mainly described the overall design of the system and the architecture of the supporting software in the system. The health examination package is portable, integrated,...
The accurate magnetic localization and orientation technique has dramatically enhanced the applications of capsule endoscope for the gastrointestinal (GI) tract examination. Yet, the surgical robot has been hindered to use widely due to the limitations of current surgical navigation technique. In this paper, an electromagnetic navigation system based on coils and magnetic sensor is introduced. The...
The location and orientation of the wireless capsule endoscope inside the human body is very important for the gastrointestinal (GI) examination. To satisfy the requirement of the position and gesture information of endoscope, a magnetic localization and orientation system is built. The system uses a permanent magnet as excitation source to create the magnetic field, and consists of a magnetic sensor...
In order to achieve the goal of high accuracy and low cost in a visual localization system, we present a novel localization method based on four inexpensive video cameras. The method mainly consists of two parts: The “16-points interpolation algorithm” is proposed to enhance the accuracy of 2D coordinates of the detected target on the image plane. Another important aspect is that the Perpendicular...
Wireless capsule endoscopy (WCE) is a great breakthrough for Gastrointestinal (GI) Tract diagnoses, and it can view the entire gastrointestinal tract, especially the small intestine without invasiveness and sedation. However, a tough problem associated with this new technology is that too many images to be inspected by naked eyes cause a huge burden to physicians, so it is significant to find an automatic...
An algorithm of premature contraction recognition is proposed. Based on R-R interval and template matching, this method can automatically detect Atrial Premature Contraction (APC) and Premature Ventricular Contraction (PVC). After test results using data from MIT-BIH Arrhythmia Database, the accuracy veracity detection of R wave is above 98.6%, APC is above 96% and PVC is above 90%.
Motor moment fluctuation is one of the major factors that can deteriorate the low-velocity stability of a turntable system, so as to decrease the control accuracy of the turntable motion. The turntable system is controlled by a current loop and a velocity loop, so we propose a new method to use the PI control strategy in the current loop and the active disturbance rejection controller in the velocity...
The selection of dam type is an important technical problem in hydropower station construction. Concrete face rockfill dam (CFRD) has been used to build many hydropower stations in recent years as it has less cost and can be built with local materials. In order to solve the great deformation of rockfill which may lead to concrete face and watertight seal structure of peripheral joints destroyed in...
At present, the government's policy on discharging pollutants of power plant is a nationally unified pollution charge standard. Considering the shortcomings of existing Pollution Charge System (PCS), an environmental value model of pollutant based on the cost of prevention is proposed in this paper; Besides, an Environmental Impact Assessment (EIA) model of generation dispatch is presented in this...
In order to accurately estimate (build) the radio signal propagation attenuation model, especially inside the gastro-intestine (GI) tract of the human body, the Radio Frequency (RF) absorption characterization in human body is investigated. This characterization provides a criterion to design the Received Signal Strength (RSS) based localization system for the objective inside the human body. In this...
Remote healthcare has the potential to greatly impact many aspect of medical care. By outfitting patients with wireless, wearable vital sign sensors, collecting detailed real-time data on physiological status can be greatly simplified. Medical care has its special needs. It needs node mobility, a wide range of data rates and high degrees of reliability, and security. This paper describes our experience...
In this paper we present a novel remote pulse wave monitoring system with hybrid infrastructure network which is based on ZigBee protocol and LAN (local area network) technique. The advantage of this type of network infrastructure is that it can fully make use of the low power consumption of ZigBee protocol in sensor network and the long-distance transmission of LAN technique. Hence, it is a good...
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