Design Of Information Interaction Platform Based On Lamp Post

With the continuous development of the Internet of Things technology,various types of Internet of Things sensing devices can be seen everywhere in the community and on both sides of the road.The complicated equipment system wastes a lot of communication resources and lacks unified access and effective management.As a common basic equipment,the pole has the advantages of uniform distribution,fixed position,easy installation and easy networking.In summary,this paper designs and implements a light pole-based information interaction platform with integrated access.The system consists of two parts:the lower computer and the upper computer.The lower computer terminal is a terminal controller with integrated access function,which can connect various types of peripherals,such as display screens,audio devices and various types of sensors.The host computer can send commands such as query,setting,control,etc.to the lower computer,and receive information such as alarm signals and sensor data of the lower computer.These two parts communicate via Ethernet to the community LAN.System functions include one-button alarm and voice intercom,multi-type data input and output,data acquisition and information release.The lower computer adopts the S5PV210 processor of the Cortex-A8 architecture as the main control chip,and the hardware includes the communication interface module,the power amplifier module,the isolation and driving module,the interface multiplexing module,and the power module.The lower computer software is based on Linux system design,based on ALSA for audio acquisition and playback processing,based on Speex for echo cancellation processing,based on Libevent for TCP communication,and based on SQLite for database design.The PC software is based on Winform design,using DirectSound to complete the audio module,complete TCP server design and UI design.Tests show that the system's data acquisition,peripheral drive,network communication and other functions are all normal,one-button alarm function is stable,VoIP voice calls are clear and smooth,and meet the expected requirements.