Semi - Arid Climate and EnvironmentObservatory of Lanzhou University ( SACOL) is the first research climate and environment observation p latform with kinds of p recise atmospheric observation instruments built at university in China. Aiming at the disadvantages of dispersive instruments and multi - data formats at SACOL, we p ropose a new system integration method for atmospheric exp loration instruments, which uses a p rincipal computer to control all of observation instruments. Firstly, wemake an observation system including network interface (micro - pulse lidar,atmospheric quality monitoring system) connect with the p rincipal computer throughHub to control the observation subsystems in the use of remote desktop. Secondly, we extend the number of the serial ports in the p rincipal controllerwith PCI bus, and let TP - WVP3000 and CE - 318 communicate with the p rincipal controller directly. Thirdly, we utilize the technology of electric current loop and drive the RS232 output signal from observation instruments, such asMFR, TP - WVP3000, CE - 318 and so on, with long - term driver, to increase the maximum communication distance to 2 000 m. Finally, for the instrumentswith the American Campbell data collectorswhich are used for near ground surface observation, radiation, soil, flux and so on, we use serial port instrument network server to convert RS232 signal to data format TCP, and send it to the p rincipal controller through Ethernet interface, at the same time, create the virtual serial portswithout difference from the real serial ports, with the advan
tage of needless to modify the original software Loggernet based on COM communication ports. This paper mainly introduces a new method, which establishesmulti digital communication transportationmodes to realize auto management of the integrated observation instruments based on modern communication technology.
