Research On Monitoring Technology Of Basement Parking Based On Decentralized Platform

Parking lot as a supporting infrastructure has been growing demand,parking lot management has become the focus of attention of the whole society.At present,the number of parking lots in China has long been unable to meet the parking needs of our country,an important reason for this problem is the low utilization rate of parking spaces caused by the lack of parking information sharing;in addition,the management of underground parking cars is separated from the management of lighting and ventilation in space,and the lighting and ventilation measures are unreasonable,the lighting energy consumption is high,and the air quality is not up to standard.Finally,with the increase of parking area,traditional centralized management system has many difficulties in construction,configuration,maintenance and upgrading of the system.Based on the new intelligent building platform,this paper studies the above problems.The specific research contents are as follows:(1)The basic structure of intelligent node CPN of building platform without central system,the networking of CPN,the difference between centralized and non-central system technology,distributed computing mode,the division of space unit of underground parking lot and the formulation of standard data set are studied.This paper studies how to realize different service functions in the same node by establishing functional subnet based on CPN node network.(2)The parking space management system of underground parking is based on CPN network.Two kinds of parking space summation and communication mechanisms,tree formation and regional information flooding,are studied to realize the display of parking space information in different regions,layers and the number of parking lots.Recent priority and parking recommendation algorithms based on parking utilization rate are studied to meet the parking guidance requirements.The specific methods of reverse vehicle searching and vehicle timing and payment based on CPN network data distributed storage are studied.Based on vehicle parking,the sub-area and time-sharing control algorithm of lighting system is studied,and the ventilation control method based on CO concentration change and timing control of space unit is studied.(3)Based on the idea of no-center platform,the design of parking lot monitoring simulation system is completed by using multi-process and multi-threading technology,and the simulation platform is implemented.The centrally distributed parking management,lighting optimization and ventilation control algorithms are successfully verified.Based on the CPN nodes of building space unit and electromechanical equipment and the standard data set of underground parking lot,the distributed parking lot monitoring technology is adopted to realize the energy-saving and safe operation of parking space management,lighting and ventilation.Compared with the traditional centralized parking monitoring system,the centralized system greatly simplifies the networking process of the underground parking monitoring system;realizes the information interchange between the underground parking system and the optimization control of lighting and ventilation energy saving;and enhances the stability,expansibility and portability of the underground parking monitoring system.In order to provide a reliable new idea for the informatization and automation of parking lots in China,it will also greatly promote the construction of parking information system and monitoring system.