The article suggests an approach to energy-saving control of street lighting based on the Smart Grid concept. An energy-saving effect is largely achieved through the round-the-clock luminary dimming. To determine the efficient dimming levels, the paper offers the automated system for model-predictive control of outdoor lighting. Luminary dimming modes are corrected depending on the natural lighting conditions and special requirements for lighting depending on the time of the day according to the actual road lighting and traffic intensity data.

Intelligent Distributed Monitoring and Control System for Lighting Networks Based on Smart Grid Concept

This paper analyzes necessity and status in quo of study for highway cables anti-theft techniques,introduces a new type of cable anti-theft system based on wireless network structure,and elaborates technical schemes of the system and design principles of software and hardware.The test of the system on the site of highway tunnels is also included in the paper.

Research and Development of Alarm Techniques for Anti-theft of Highway Cables

This paper analyses the power line carrier communication channel characteristics,presents channel model,the spreading of the anti-jamming communications technology features,a spread spectrum technology modulation system simulation model,designes the lighting control system hardware circuit.It shows the lighting control system communication protocol,developes the lighting control system software,demonstrats the lighting control system for the testing laboratory.

Power saving lighting control system based on power line carrier communication technique

the article introduces "human prevention,soil protection,technical prevention and joint prevention" methods on anti-theft system for power cable,and studies current technical principle and alarm mode.Combined with highway current mechatronic systems and real needs,the article proposes a comprehensive anti-theft plan that combined anti-theft system for cable,power equipment management,power line carrier and highway communication network.

The Study on Application of "Four Protection" Technology in Highway

In this paper, we proposed a novel street lighting system called Distributed Street Lighting Control System with IntelliSense (DSLCSI), and on this basis, five-end architecture, an ItelliSense extension mechanism and a cable theft detection method are described in turn. DSLCSI is presented to overcome the complex configuration, poor scalability and low reliability of cable theft detection methods in existing street lighting system. The results of field application show that DSLCSI provides convenient system scalability and maintainability, and improves the reliability of cable theft detection.

Distributed Street Lighting Control System with IntelliSense

When the concrete is in the process of load, the curve of amplitude - frequency shows significant characteristic of exponential. As the load increases, the acoustic emission signals gradually become complete, the more obvious features of this exponential function. Using the least squares method, we can get an empirical function expression by fitting the data.Function expression has different regression coefficients in different load stages, and regression coefficients changing with load also presents certain rules, which has a good indication to qualitative process of structural damage.

The Indication of Damage in Concrete by Amplitude-Frequency of Acoustic Emission Signal

The wave speed of acoustic emission in the medium is uncertain, which is influenced by the source characteristics and the relative position between the acoustic emission source and the sensors. Due to this difference, the results of TDOA location method determination of wave speed in advance are very discrete. As to liner location ,the more farther the distance between two acoustic emission source sensor are, the more serious the discrete error are. Any of the two sensors, a location line can be obtained by setting the wave speed as a horizontal coordinate and the location as the vertical coordinate. The horizontal coordinate of location line of the different sensors is the real wave speed of acoustic emission events. This method has lower computational complexity, which can overcome the influence on acoustic emission location which wave speed setting error brings, having some practical value in Engineering.

Study on Self Judgment of Location Lave Speed of Acoustic Emission on Concrete Members

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Papers

Distributed Street Lighting Control System with IntelliSense

The Indication of Damage in Concrete by Amplitude-Frequency of Acoustic Emission Signal

Study on Self Judgment of Location Lave Speed of Acoustic Emission on Concrete Members