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In view of the current smart home comfort, human-computer interaction, cost, power consumption and other aspects of the problem, the ZigBee wireless sensor communication technique is adopted to form home data and control network. Combined with 3G/4G network technology, the intelligent home remote monitoring system is developed on the basis of embedded web gateway, cloud server and smart phone app...
Based on the LEACH protocol and the Single-hop protocol, this paper proposes a new method to predict the lifetime and reliability of wireless sensor network directly. That is to say, the sensor nodes can be directly deployed without further simulation. Through a series of experiments to compare the two protocols have been several key conclusions: With the increase in sensor density, although the LEACH...
To solve the overlap problem in node selection process in order to fill the existing routing algorithms deficiencies, This paper designs a traditional Gossiping routing algorithm based on SPSO. At the same time, the paper gives the content and design steps of this algorithm. The simulation results show that the algorithm can effectively solve the problem of node selection.
The underground coal mine is dangerous environment with gas1. In long term operation, the insulation resistance of cable decreases, and then leads to leakage. This can result in a threat to human and production safety. The leakage fault signal is weak, and the protection methods have no selectivity. The improvement of the protection method for additional DC source is proposed in this paper. The leakage...
In this paper, we present a clustering scheme using fuzzy logic in multi-hop radar sensor networks (RSN) for target detection. We design fuzzy-logic-based cluster-head (CH) election considering routing selection algorithm under the condition of constant false alarm rate (CFAR) in fading environment. Three antecedents, the small scale fading of the signal transmitted by a radar sensor (RS) to the base...
Even though the wireless positioning in sensor networks has been extensively studied in the past decades, there is no contribution discussing positioning the receiver that belongs to another system, i.e., the third-party receiver. In this paper, we propose a new scheme to solve the problem by full-duplex rtechnique. In our scheme, we let the sensors conduct the full-duplex relay for the target receiver...
A fuzzy logic approach to retrieve the soil moisture from the ultra-wideband (UWB) radar measurements is investigated in this paper. A monostatic UWB radar module is applied to collect the reflected signals from subsurface of bare soil and sand with different volume water contents (VWCs). Meanwhile, VWCs' data are collected by a time domain reflectometer (TDR). Traditionally, the channel modeling,...
The attitude control is the key of the automatic flight for a quad-rotor aircraft. In order to guarantee the robustness of the quad-rotor aircraft for various uncertainties, a new design method of the robust optimal control that integrates the sliding mode control theory with state-dependent Riccati equation (SDRE) is proposed in this paper. First, the whole attitude kinematical model is obtained...
Investigation in MIMO-RSN (Multi-input Multi-output radar sensor networks) is becoming more attractive in current literature. In a MIMO system, power allocation in accordance with the channel gain can significantly improve the system throughput performance. This paper investigates three power allocation methods in MIMO-RSN: water-filling, equal power and channel inversion. Their performances are analyzed...
Clustering performances by low energy adaptive clustering hierarchy (LEACH) and hybrid energy-efficient distributed clustering approach (HEED) are compared in radar sensor networks for the first time to the best of our knowledge. In the target detection performances, we also compare the constant threshold approach (CTH) with the constant false alarm rate (CFAR) approach for both LEACH and HEED. The...
In this paper, a new decision fusion algorithm based on Dempster-Shafer theory (DST) and Bayes criterion for multiple hypotheses in heterogeneous wireless sensor network is proposed. Firstly, the two layer sensor fusion scheme is put forward to study the decision fusion rules of the multiple hypotheses multisensory systems. In the first layer, the optimal local decision fusion rule and the suboptimal...
Identification of noise and vibration is essential in dual-rotor systems with slightly different rotating speeds. This paper investigates the noise and vibration of a decanter centrifuge. Experimental investigations on a horizontal decanter centrifuge indicate that noise is correlated with the vibration in the Z axis. Noise can be classified as mechanical, fluid, air, or coupling noise. Increasing...
Indoor localization based on existent WiFi signal strength is becoming more and more prevalent and ubiquitous. Unfortunately, the WiFi received signal strength (RSS) is susceptible by multipath, signal attenuation and environmental changes, it is the major challenge for accurate indoor localization. In this paper, to overcome these limitations, we propose an indoor localization based on expansion...
Information fusion for target detection in heterogeneous radar sensor networks (HRSN) is an attractive research area. By considering the heterogeneity of HRSN that different local radar sensors have different detection performances, we propose a decision fusion algorithm using optimized energy allocation in this paper. Simulation results show that compared with equal energy allocation scheme, the...
In this paper, a fuzzy logic approach (Type-1 Fuzzy Logic Classifier (T1FLC)) is proposed to improve flight recognition ratio. On a basis of measurements, we acquire the high range resolution profiles (HRRP) of three types of air targets, namely F-15, Tu-16 and AH-64. The length and the difference between the two adjacent HRRPS are extracted as two antecedents for the T1FLC. Gaussian membership functions...
Radar sensor deployment is of great importance for radar sensor network (RSN) provisioning. A RSN is effectively deployed to detect multi-target within a given surveillance area with required detection performance and energy consumption. In this paper, we explore two deployment strategies-Hexagonal Deployment Strategy(HDS) and Diamond Deployment Strat-egy(DDS). We propose two decision fusion rules...
The measurement of soil properties on site-specific basis is desired for modern production precision agriculture. In this paper, we investigate in the soil channel modeling based on extensive data, which are obtained using a UWB monostatic radar module. Extensive data are collected in different soil with distinct pH values and the channel impulse responses (CIRs) are extracted via CLEAN algorithm...
Indoor localization based on existing WiFi signal strength is becoming increasingly prevalent. Many indoor localization algorithms have been proposed, such as NN, KNN and WKNN. In this paper, we propose an indoor localization of WiFi based on branch-bound algorithm(ILBBA). The ILBBA consists of offline and online phase. In the offline phase, the received signal strength(RSS) is collected by mobile...
while focusing on the utility of the products, consumers are paying more attention to the aesthetic value, user, experience and brand effects. Furthermore, with rich spiritual connotation, products always relectcohesive invisible intellectual property. Companies are showing increasing emphasis in intellectual property protection in the design management. However, for the traditional thinking preference...
The essay gives design ideas of the circlip switch and builds three-dimensional model. Based on finite element analysis software(ANSYS), stress of the gravity block and reed used as switch poles is analyzed. assessing and analyzing force and deformation of the reed by ANSYS analysis results. Hammer test is carried out to simulate ultrahigh overload environment of the processed switch. Test result...
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