Underground parking lot is a component of intelligent buildings, it has correlations with whole building as well as being a relatively dependent space. The safe reliability and stability of the parking lot monitor system is the core of the intelligent system. In this paper, through research and analysis,...

Qingdao city has built lightning protection supervision system in 2013, and the system has basic information collection, daily safety management, lightning protection business data integration and the full information management functions of the ultimate decision-making analysis. The system not only...

By setting the training ship of Dalian Maritime University, “Yu-Kun” as the research object, numerical simulation was conducted for 10°/10° zig-zag maneuvering test based on the theory and calculation method of computational fluid mechanics in this paper. According to the contrastive analysis on the...

Micro controller computer is a kind of common electronic products, and it is often used for temperature detection in electronic devices. This paper will make full use of the advantage of micro controller computer to design an intelligent water dispenser with the temperature detection and control function....

In order to achieve better performances of course-keeping and course-changing, the ship course maneuvering is divided into 3 typical stages, and then different Robust PID controllers and fuzzy membership functions are designed accordingly, and a comprehensive intelligent fuzzy PID course control system...

With the adoption of large amount of information communication technology (ICT) and the increasingly frequent cyber-attacks, security issues have gradually become key problems for warship systems. Warship systems, as a special mobile information combat platform, have higher requirements for timeliness...

In order to amalgamate distributing platform of traditional TV program with mobile Internet on technology and business, it is necessary to study the method of TV channel recognition based on the collaboration between mobile terminals and publishing service of TV program. Due to some advantages based...

The new transmission mechanism crank-group driving mechanism is mainly used in some special light industrial machinery. Paper drew the mechanism's trajectory curve of the structure unit by the graphic method, analyzed it related to the trajectory function, and then studied the motion characteristics...

Take the support frame of reversal lift system with pulley block as research object, complete the stress analysis and structure design of support frame, then make the finite element simulation calculation by using ABAQUS, the results conform to the requirements of the strength.

In this paper, hydraulic replacement system of the damaged tower material is researched. The hydraulic replacement device is set out along main material; using the reinforcing plate and connecting bolt holes of double column battens angle steel tower to design the hydraulic replacement system for damaged...

The cableway on car for emergency repair has the characteristics of rapid, efficient and flexible etc., which can meet the requirement of power grid’s emergency repair, this article mainly through force calculation of beam and pillar of support frame, completed the structure design of the support frame...

Centerline reflects the shape characteristics of pipes, and centerline extraction is widely used in automation equipment field and Medical field. This paper proposes a method to automatically extract bending pipe's centerline with technology of image filtering and de-noising and edge detection. By finding...

Fluid and solid coupling of aircraft hydraulic system can cause pipeline crack, while it is difficult to monitor its crack in real time. This paper studies the fatigue thermal effect, obtains the regulation of the thermal distribution, and establishes the thermal modeling of fatigue crack propagation....

Liquefied natural gas (LNG) contains a large amount of cold energy.The development of cascade utilization of LNG cold energy has large economic benefits, and it is beneficial to reduce the cost of LNG. This paper designed a process and simulated the utilization system of LNG cold energy based on the...

A headset which is convenient to carry may eliminate the cumbersome of traditional headset with lines through USB connection. Compared with traditional one, it can be used in various environments like video chat and listening to music during travel. In nowadays, many people like to play games and they...

“People oriented” design concept has become the mainstream and humanized, emotional design has become the trend of product design. Product design aims at serving human beings better as well as making life convenient and comfortable rather than simply design. The earphones I design in this paper mainly...

This project mainly aims at the students which is convenient, simple and easy to carry. In addition, it basically has no harm to our ears, and we will not feel dis-comfortable after using for a long time, it is suitable for games, movies, music, voice and so on. We can also carry it to other places and...

This design is a research on optimizing and improving the portable type of headset. It analyzes both physiological and psychological demands of the users through combining with relevant theories of ergonomics, humanized design and design psychology, and then explores a feasible scheme which is more in...

Because of forgetting or other factors, people inevitable lose some important things in life, but electronic locator will help people solve this problem. Electronic locator is composed of a transmitter and several receivers. As long as you press the corresponding button which connected transmitter and...

In the context of traditional vacuum cleaner, this paper explores and discovers people's daily demand for vacuum cleaner, and explores a feasible plan which is more consistent with the demand of contemporary family life through analyzing and studying its evolutionary process, demand conditions of various...

Start from the basic concept of vacuum cleaner and learn various functions, features and advantages of new multi-functional intelligent vacuum cleaner. Then conduct theoretical verification through conceptual analysis, market research and algorithm, analyze the structure and classification of vacuum...

The vehicle load action often leads to serious damage of saturated asphalt pavement. The finite element model of saturated asphalt pavement was established by ANSYS to research mechanics behavior of pavement response to moisture-loading coupling action. Then, the spatial distribution of pore-water pressure,...

A tunnel construction in a nuclear power plant is proposed in this paper. Some useful conclusions are drawn through the analysis of the measured results including the stress state and process of structure and water and soil pressure. It is useful for design, construction of similar engineering.

In order to overcome the defects of the safety factor of foundation pit stability, reliability theory has been applied to the stability analysis of foundation pit. The theory depends on the establishment of correct failure mode and function of foundation pit. Through the analysis of the influence factors...

After running for half a year, periodic inspection to a discharge sluice shows that cracks in the direction of water current appear in the bottom board of most of sluice lockage chamber. Stress computation under the design conditions and the working conditions after cracks appeared are carried out with...

Slope-slide caused by mining is a problem of mine geological environment treatment in our country. It is particularly important to analyze the reasons and mechanism of the mining slide-slope, and put forward the methods of analysis of stability of slope and corresponding countermeasures for reasonable...

the traffic lights on urban road intersections is one of important methods to control the traffic flow, it can valuably improve the jammed traffic situation. In this paper, an adaptive traffic lights control method on urban road intersections is designed in, it can actively adjust the control time of...

In this paper, the electrical parts of a high-rise shopping and office buildings are studied. Firstly, according to the division of the load level, the load calculation is carried out with the method of unit capacity, so as to determine the capacity and the current of the load. In accordance with the...

vertical cracks may propagate through the whole dam under water pressure, which exist on the upstream of 18th section in Danjiangkou Dam. To solve the problems, stress intensity factor method of fracture mechanics is adopted, combing with three-dimensional finite element method. For different cracks...

This paper adopts DPM model to analyze the numerical simulation of particles with several densities and sizes in rotating cylindrical flow and explore the movement features and stress rule of single particle in rotating cylindrical flow. The result demonstrated that when single particle rotate at a constant...

In this paper failure process of rock with a partially-spanning joint is presented by numerical simulation based on RFPA2D. numerical simulation shown that mechanical behavior of jointed rock mass is governed by both the mechanical characteristics of the discontinuities and those of the intact rock,...

Surrounding rock masses’ stabilities of cavities and crane beams of the hydropower station were studied using FLAC3D. Results show that, due to the large excavation span and height, the main powerhouse and tail water hole have larger plastic zones after the excavation, and the same as 1 # unit and 2...

At present, the rice direct seeding equipments in China are difficult to achieve precise hill-drop and can not meet the agronomic requirements, so we put forward a rice direct seeding technique with synchronous open furrows and design a suspension type of precision rice hill-drop drilling planter for...

This paper presents the motion control and software design of an on-line automatic recognition system for automobile aluminum wheels. The system mainly consists of a recognition station, two laser displacement sensors, a ball-screw, an industrial computer with data processing software, and a programmable...

The inductance gradient is one of the most important indexes to evaluate the performance of the electromagnetic railgun. It has important theoretical and practical value to research the inductance gradient and its influencing parameters. According to the Biot-Savat's law and the principle of virtual...

An optimal stochastic problem of production scheduling for uncertain re-entrant assembly workshops (URAWs) was studied, in which the assembly process is repeated on the basis of quality inspection result and the number of repeats is uncertain. According to analysis of URAWs, a stochastic expected value...

The Fe-Co double nanoparticle magnetic fluid prepared by pulse laser deposition was investigated. The results show that peak height of magnetic fluid under 5000 Gs magnetic fluid gradually reduced with increase mass ratio of Fe(CO)5 and Co2(CO)8, and peak height is biggest when mass ratio of Fe(CO)5...

Monitoring of metal oxide surge arresters (MOA) due to aging, moisture and other components cause increased resistive current. Therefore, this paper designed an experiment-based DSP on-line monitoring device. The instrument can transmit the data into our computers or cell phonespassed by WIFI . In order...

A novel algorithm for range and velocity measurement in Pulse Doppler Laser Radar was proposed in this paper. We used pseudo-random code to modulate the 1.55 m continuous laser in the laser Radar transmitter firstly, and then different detection method was utilized for sensing target range and target...

In view of the fact that the complicated structures, a lot of process parameters, a lot of fault types and a lot of fault cases of cement rotary kiln, Case-Based Reasoning (CBR) method is put forward to use to diagnose for cement rotary kiln. CBR fault diagnosis model is established. Object-oriented...

Stress response is the foundation for calculating a structure’s fatigue life during vibration testing. The frequency-domain method based on stress frequency-response function (SFRF) is widely used because of its convenience. For Gaussian random excitation, the frequency-domain method may have a good...

The diagnosis of compound-fault is always a difficult point, and there is not an effective method in equipment diagnosis field, and then a new method of compound-fault diagnosis was presented in the paper. The vibration signals at start-up in the gearbox are non-stationary signals, in order to solve...

A force feedback model of steering wheel was established based on mechanical analysis of the vehicle steering system. Taking driver’s preference for steering torque into consideration, a correction coefficient was introduced to this model, and a method for determining the coefficient was also put forward....

In view of the characters that specimens of the integrated transmission are not sufficient, the failure modes are various and available data are not enough, this paper proposes a method utilizing experts’ experiences, similar products and typical design parameters to predict reliability. First, analyze...

A novel type of automatic transmission is presented in this paper. The transmission consists of a fiction clutch and a one-way clutch, which is named as One-way Clutch Assistant Transmission. The working principle of this type of transmission is shifting automatically by automatic disengagement and engagement...

A method which uses the dynamical model is raised to solve the human initial gesture of the man-rifle system. It uses the known information of part of limbs to build the truthfulness constraint, and then solve the problem with the dynamics of rigid multi-body. Using this method and combined using ADAMS...

Artillery firing recoil movement characteristics concerns artillery firing security and the play of its operational effectiveness, which is the key issue that artillery designers and users focus on. To solve the problems of traditional and modern simulation analysis methods applied to artillery firing...

Due to the limit of the static strength theory design used in tracked vehicle, it can’t reflect the dynamic loads suffered by the main part, so it is difficult to analyze the reliability and remained lifetime prediction, in some degree it affect the performance. In this paper, we apply the collaborative...

The mathematical model has been built based on the designation of submersible’s structure. The system parameters of the underwater propulsion submersible have been sorted, calculated and stimulated. The PSO algorithm is used to find the optimal parameters of PID controller to finish feedback control...

In this paper, in terms of feature extraction, according to the characteristics palmprint image we improve PCA algorithm and design modular PCA algorithms that is suitable for palmprint image. The whole palmprint image is divided into a plurality of sub-block images, then use principal component analysis.The...

Setting up an expansion chamber in the local tunnel can accelerate the attenuation speed of the shock wave, which is of great importance for safety protection of the tunnel staff. Under the same simplified conditions, the reliability of the numerical model was verified according to the theoretical formula...

As swarm intelligence algorithm has such problems as poor convergence performance, long search time, and low search efficiency and it is also easy to stagnate at locally optimal solution in the process to solve complex optimization problems, self-adaptation hybrid particle swarm optimization algorithm...

The effect of aerodynamic heating is obvious for hypersonic aircrafts. Its temperature change of cabin electronic devices is obvious under this severe working condition. Therefore, for this type of aircraft, it is important to design the thermal protecting system and evaluate the impact on electrical...

This paper takes cyclic economy as research background, adopting diatomite to enforce A2 /O process and to make treatment study, using A2 /O process testing equipment to simulate the running conditions of A2/O process in wastewater treatment plant, and adjusting the index parameters in A2/O testing equipment...

This paper proposes a new detection method for accurate detection of dimension of thin sheet parts, breaks a traditional manual detection mode, comes up with a machine vision detection system, conducts research analysis of definition, application, principle and hardware structure of this detecting technique,...

This paper analyzes favorable properties and realization principles of probabilistic neural network and elaborates the original image pre-processing and normalization processing of hand-written numeral, proper vector extraction, network model building, and other key techniques. Finally, this paper checks...

In view of the situation of home security problems and the defect of security products in the domestic market, a new intelligent home anti-theft alarm system is designed by using of ATMEL SAM R21 microcontroller multiple and various detection sensors and central alarm processing unit. The network communication...

The pitting behavior of DH32 steel was studied by using the potentiodynamic polarization method. The results showed that the passivation zone narrowed as the concentrations of chloride ions and thiosulfate ions(S2O32-) increased. At high S2O32- ions concentrations, there was a more potential shift to...

This paper aims at designing a set of FPGA based phonetic intelligent home system, wherein this system completely adopts wireless communication technology to avoid rewiring problem and can control home appliances through voice recognition and infrared sensor, thus to phonetically turn on or turn off...

Adopting absolute nodal coordinate method, this article establishes dynamic model of double-connecting rod flexible manipulator. Its broad sense moment is obtained through virtual work principle. State equation is further deducted on this basis and numerical integration method is given. This article...

Phase-pure, monoclinic, and nanostructured FePO4 composites have been synthesized by a hydrothermal method at different waterbath reaction time and characterized by XRD, SEM. The results showed that calcination time have great influence on the FePO4 composite. When the waterbath reaction time was 7 days,...

MS.Net framework has a cross-language, cross-platform, security, as well as support of open Internet standards and protocols, and other advantages, it is the ideal framework for a new generation of Internet integrated service platform to build, based on the framework for the development of aerobic metabolism...

This paper briefly discusses the application of the design of mobile belt conveyor special-shaped frame structure based on solid works finite element method. Take the special-shaped of the mobile belt conveyor as an example, using Solid Works analysis software for modeling and stress analysis. Through...

The operational effectiveness of the artillery declines under the condition that the artillery and the target are both in motion. The error simulation model is built on the hit model error analysis. In addition, firing lead error and hit probability of the artillery under different operational conditions...

The oil and gas suspension is the important part of the type special vehicle. This paper introduces the working principle of the special type vehicle oil gas suspension system, and the multifunctional experiment debugging platform is designed based on PROE modeling technology, and it is used to inspect...

With the advantages of low energy consumption and zero emissions, pure electric vehicles are tent to be the substitution of the traditional vehicles. However, there are a lot of electric frames still made of welded square steel and angle iron, it can increase the intensity of the frame by this way, and...

Skull stiffness of children is of great significance to protect brain tissues during traffic accidents. In this paper, the effects of skull stiffness on traumatic brain injury (TBI) are investigated by using a validated 6-year-old child head finite element (FE) model according to Chinese standard GB/T...

With the development of space technology, the space manipulator is widely used in space. Before launching into space to practical work, the manipulator needs to finish a large of number of experiments on the ground. In this article, we study on the mechanical arm to finding out the mechanical properties...

In recent years, with the development of artificial intelligence, more experts and scholars have joined in the research about facial expression recognition. Algorithms of feature extraction and facial expression recognition are put forward in succession, and each has advantages and disadvantages. A research...

This paper proposed a new way of crossover and mutation for genetic algorithm to prevent the local optima and guarantee the feasibility of the mutated path. Improving the adaptive adjustment of crossover and mutation probability to improve the search efficiency of the algorithm optimization. Contrary...

Auto throttle controls directly the speed of the car. The driver can trample accurately and smoothly trample accelerator pedal to control the speed. In order to make the driver can real-time track the set the speed in the process of vehicle driving, a method based on Ziegler Nichols- frequency response...

It is usually difficult to construct the virtual scene of complex environment such as the ship engine room. Therefore, a new method for virtual engine room construction using projection matching and hybrid modeling technology based on geometry and image is presented in this paper. In this method, the...

We are always good at analyzing individual problems and finding their solutions using TRIZ tools. In practice, however, innovative professionals tend to be confronted with multiple problems rather than one. In this study, innovative tools such as “analogy”, “ideal final result” (IFR), “resource analysis”...

Space station redocking is a long period process which suffers uncertainties from external environment and space station itself. Dynamic model of redocking is derived firstly, then generalized Polynomial Chaos (gPC) method is used to analysis the influence on attitude motion caused by uncertainties....

Aimed at the defects of data acquisition systems such as poor versatility, poor mobility, time and effort wasted, poor flexibility, vulnerable to adverse environmental, a wireless data acquisition system based on Android system was proposed. The system took the chip named STC12C5616AD as the main controller...

The wire rope is widely used in engineering as a flexure component. It is necessary that the wire rope defect must be detected for certain damage would be inevitable occurred in the using process. In this article, the brief introduction about the state of the wire rope defect in the domestic is given....

This system controls the speed of the fan by the temperature collected by the Single chip microcomputer ,the terminal of android can remotely control the fan by the communication protocol of Bluetooth 2.0.This system can display teal-time temperature. There are three kind of wind speed can be adjusted....

Machine of gypsum hollow brick is a special machine equipment for making gypsum hollow brick. To improve design efficiency of the gypsum hollow block forming machine, shorten the product design and development cycle, meet the needs of medium investors and product upgrading, enable enterprises to quickly...

Based on the basic theory of harmonic drive, circular spline profile is computed by envelope method when flexspline profile chooses double circular-arc tooth. The load distribution among the teeth of the flexspline has been calculated under different working conditions. When the force intersection angle...

The purpose of this study was to explore the mechanical properties and functional adaptability of bone of vibration training in rats. Sixty rats were randomly assigned to four groups: control group, low frequency (25 Hz, 3mm) vibration group, middle frequency (35Hz, 3mm) vibration group, and high frequency...

With the development of the container transportation and the urgent demand of the fast-unlocking of container handling, the securing and unlocking technologies are more and more important. Types of container securing equipment such as the locating cone and the locking base were introduced. The unlocking...

Through the research on the ultrasonic fish-finding, design a real-time detection system of fish-finding based on LabVIEW and NI PCI-6024E data acquisition card .Under the support of LabVIEW, can be a variety of data real-time acquisition of the fish, through the analysis of the data to provide accurate...

Electricity metering equipment automatic testing detection pipeline has been widely used in most provincial company of the State Grid in the past two years. Sichuan electric power corporation metering center first developed a fully compatible pipelines, the compatibility of robot is one of the difficulties...

At present, the State Grid verification pipeline can only work for a single metering equipment, and exists some outstanding problems, including utilization rate, clear line time, the project investment cost and occupation area and so on. This paper introduces fully compatible integration verification...

Lime softening & side-stream lime softening method is used for circulating water treatment system in a certain Coal-fired power plant project of Henan Province. Main components of sludge discharged from lime softening system are CaCO3 and Mg(OH)2. This study analyzed the composition and discharge amount...

In the thesis, simulated analysis of eight steel reinforced high strength concrete column under the low reversed cyclic horizontal load were performed by using the nonlinear finite element software of ABAQUS. The hysteresis behavior, skeleton curve, displacement ductility energy-dissipating capacity...

In an applied electric field, the relationship between the ferroelectric’s intensity of polarization and the electric field intensity is not linear but a hysteretic loop which is called the ferroelectric hysteresis loop. When the temperature of the ferroelectric is heated to the transition temperature...

The nonlinear systems with time delay network control is discussed in this paper, transmission delays and packet dropouts for networked control system with random time delay is analyzed. In this paper, online delay estimation method to obtain the delay value, the delay value is an input parameter of...

An original method is presented in this paper, which attempts to make use of the kalman filtering algorithm and maintain accuracy in position, attitude and velocity estimation for a fast moving projectile, the velocity and the pose (position and attitude) could also be obtained, then the simulation are...

SVG in distribution power grid has completely entered into the practical phase, as H-bridge of the core part of SVG, which is low test efficiency, poor reliability, high cost and requires repeated manual testing in the process of production. This thesis firstly analyzes the test environment of H-bridge...

As a new horizontal rotation loading device, elevator comprehensive back-to-back test system can simulate the energy status of in different elevator load. It makes the elevator or its components such as magnetorheological(MR) traction transmission device to meet the dynamic characteristics in practical...

The electromotor shell is analyzed by the finite element method. The result shows that vibrations of exterior and the top of the shell produce the shell vibration. The rib reinforcement type and the surrounded structure are designed to optimize and ameliorate the prototype structure. Then vibration and...

Mixed flow fields of water and low density particles in the stirred tank of the single size six-blade ruston turbine are calculated by the large eddy simulation and multiphase flow model. The effect of the mounting location of the paddle on two phase flow field is studied. The result shows that with...

Modified chinese walnut shell is a kind of adsorbent, this study using the adsorption of Cu2+ , Cd2+, Hg +, Cr6+ metal ions modified chinese walnut shell, on the desorption studies. The acid treatment of modified Chinese walnut shell, heavy metal desorption rate is above 90%. Show that H+ play an important...

In order to effectively represent the mechanism of pulsed eddy current testing, the analytical model of harmonic eddy current field above copper strip and plate is worked out in cylindrical coordinate by applying the theory of reflection and transmission of electromagnetic waves and Truncated Region...

During the winding construction, the pre-stressed wire wound orthogonal preload frame bears the preloading force applied by the steel wire from top, bottom, left and right simultaneously. Compared with the ordinary preload frame, it bears complex force, there is no obvious distribution rule on the surface...

To binocular vision light pen measuring system, calibrating the camera fast and accurate, can improve the practicality of the system application. In the establishment of ideal camera imaging model, considering the lens radial distortion and tangential distortion factors, studies the practical imaging...

The rapid development of the Internet makes distributed computing has become a mainstream application, network openness, connectivity, shared characteristics, so that the risk of suffering from the growing network intrusions. How to ensure the network and information security has become very important...

In view of problems such as difficulty in measuring state parameters and disturbance in the process of agricultural machinery, the monitoring system is designed for running state of the oscillating subsoiler based on CAN bus, to collect the deep loosening machine running speed, tractive resistance, the...

In this paper, an optimization design method based on the Particle Swarm Optimization (PSO) technique is proposed for the enhancement of the passive suspension system performance of heavy vehicles. The optimization problem based on a quarter-vehicle model aims to minimize the dynamic tyre load subject...

Landslide protections are ultimately races against time. Through analyzing the landslide, we can take prompt measures to prevent further decline and avoid heavy losses. By analyzing highway landslide of crest EHV power tower formation mechanism, calculating and analyzing landslide stability, this paper...

In this paper, structure control effect of joint network rock mass on seismic response of underground cavern is investigated. With discussion of the generating principle of 2-d joint network, five characterizing parameters, i.e. as joint density, joint orientation & its discretization, joint trace length...

Permanent magnet synchronous motor (PMSM) driving stable platform directly is often used in guided rockets. Due to the extended state observe (ESO) contained in the active disturbance rejection controller (ADRC), it can estimate the speed of the rotated carrier and the uncertain disturbances accurately...

As an aided tool of sheet metal forming process, the technology of computer simulation can reflect the interaction between the mould and blank dynamically, and the thickness distribution during the whole forming process. In the paper, the thickness attenuation ratio under different key mould parameters...

This paper is based on the idea of information fusion, which is proposed to use multi-information fusion technology to summarize the facial target detection technology and take it as a breakthrough point, by means of analyzing the strategy of common information fusion, it discusses the algorithm of facial...

In order to ensure the stability of double track orchard self-propelled transport system and prevent tensile failure induced by the broken wire rope, we try to measure the state characteristics of the wire rope using the appropriate testing techniques and analysis methods, and monitor the wear condition...

Aluminum alloy structural hangers are widely used in subway vehicle. The advantage of aluminum alloy is light weight and corrosion resistance. For different application fields, the structures of aluminum alloy components are very different. They are typically lighter for the same strength and provide...

Pulsar study is one of the important issues on radio astronomy; however, the quality of pulsar observations is affected by the spectrum overlaps with navigation signals. Actually, pulsar signals and navigation signals are usually overwhelmed in the noise. Thus this paper focuses on the application of...

In order to obtain the motor current signal conveniently and solve the problem caused by the fundamental frequency fluctuation of the power network, a current harmonic detection system based on magnetic sensor is proposed in this paper. This system will simplify the measurement process, as it uses the...

Aimed at the problem of product modeling under Mass Customization, concepts of the characteristic matrix and matrix row were proposed. The function-structure model based on product network nodes was established by the combination and identification of characteristic matrix under the function-structure...

Mathematical model and boundary conditions of expansion process are established. The method of modeling expansion process with Simulink and its simulation is discussed. By using IIZA-1.5/8compressor as research subject, the models with an easily operable interface is built and extract the clearance volume’s...