Study On Low Power Consumption And Maintainability Of Wireless Parking Detection System

With the development of China's economy and the acceleration of urbanization,the number of cars is increasing year by year.Therefore,the problem of difficulty in parking has gradually become more prominent.Especially in cities with large populations,or where sports art events are arranged,finding parking spaces is a frustrating problem.With the increasing number of cars,this situation will become more and more serious.Therefore,the demand for parking detection systems is expected to grow rapidly in the near future.Wireless sensor network has the characteristics of rapid deployment,collaborative sensing,and easy expansion.Wireless sensor network will be an excellent choice for the application of the parking detection system in order to facilitate the early deployment operation,the cost control of the system,and the difficulty of maintenance in the later period.Wireless sensor networks are generally powered by batteries,which is very troublesome to replace and easily increase maintenance costs.Parking detection nodes based on wireless sensor networks generally need to be sealed and buried underground,and replacing the battery is very troublesome.In order to ensure the working life of the node,low power consumption is the first problem to be solved.The long-term stable operation of the system is inseparable from the excellent design in the early stage and good maintenance in the later stage.This paper studies the low power consumption and maintainability of wireless sensor networks based on the parking detection system.The main work of this article has two aspects.Firstly,this article designs and implements a parking detection system based on geomagnetic wireless sensor network,including low-power design of parking detection nodes,wireless sensor network communication design,low-power data transmission method,data retransmission method,and the software development of host computer information management.Secondly,this article designs a method for evaluating the maintainability of the wireless sensor network.The goal of this method is to evaluate the maintainability of the system to be built during the design phase of the wireless sensor network.By analyzing the factors affecting the maintainability of the system,the maintainability evaluation model is established to improve the maintainability of the system design stage,and then use the evaluation results as the basis for the subsequent system construction to improve the maintainability of the system and reduce the cost of subsequent maintenance of the system.In order to improve the maintainability of the system,this article developed a wireless sensor network detector.Through the network analysis client,we can analyze the data packets captured by the detector,quickly locate the network fault point and fault type,and improve the maintenance efficiency of the system.Finally,this article tests the system and analyzes the performance.The test results show that the parking detection system designed in this paper has complete functions,good node communication performance,and high data transmission reliability.Under the low-power data transmission method of the parking space detection node,the service life of the star network can reach 5.6 years,and the service life of the self-organized cluster network node can reach 8 years.The star network parking detection system has a packet loss rate of 1.62% under the CSMA-based random backoff retransmission method.The self-organizing clustered network parking space detection system has a packet loss rate of 1.96% under the TDMA-based data transmission and retransmission method.Then the test results of various indicators are brought into the maintainability evaluation model.The results show that the maintainability of the system is in a good state.