基于Wifi的船舶状态数据采集系统设计

Design of ship status data acquisition system based on Wifi

受采集结构和网络配线的局限,传统船舶状态数据采集系统的数据采集延迟性较高。为了解决这一问题,基于WiFi传输技术,设计船舶状态数据分布式采集系统。制备船舶状态数据采集器,作为采集系统终端二阶控制终端,利用内置传感器,实时采集当前船舶状态数据,通过3类不同传输端口,进行数据传导,利用无线网络相关技术,基于802.15无线标准传输协议,制备的一体化无线传输模块,连接采集器和局域网,作为传输通路,设计局域网入网协议,通过对无线数据信号的傅里叶变换,确定并保证数据信号伪随机码和当前局域网的载波同步,将无线网络传输的数据连入局域网,传输到控制区,实现数据采集。实验数据表明,应用设计系统后,船舶状态数据读取和输出延迟分别缩减了31%和27%,可以证明,该系统具有缩减船舶数据采集延迟的效果。

limited by the acquisition structure and network wiring, the traditional ship status data acquisition system,data acquisition delay is high. In order to solve this problem, based on WiFi transmission technology, a distributed acquisition system of ship state data is designed. Design of ship status data collector, as acquisition system terminal second-order control terminal, use the built-in sensors, real-time acquisition the current shipping status data, and through the three kinds of different transport port, for data transmission, the use of wireless network technology, based on the 802.15 wireless standards transport protocol, the preparation of the integration of wireless transmission module, the connection terminal and local area network(LAN), as the transmission channel, LAN network protocol design, through the Fourier transform of wireless data signal, to identify and to ensure that the data signal pseudorandom code and carrier synchronization of the current local area network, wireless network transmission of data is connected to a LAN, transmitted to the control area, Data collection is realized. Experimental data show that after the application of the design system, the reading and output delay of ship status data are reduced by 31% and 27% respectively, which proves that the system has the effect of reducing the delay of ship data acquisition.