Design Of Flowers Greenhouse Monitoring System Based On Embedded Linux System

Nowadays,with the rapid development of the domestic economy,people's material life level has been improved gradually,the demand for ornamental flowers and plants is also growing.On the other hand,flower planting greenhouse environment parameters monitoring in our country is still using a relatively traditional manual sampling and monitoring at this stage,it is not only costly but also labour-intensive.With the vigorous development of flower cultivation technology,flower cultivation has been gradually moving towards the road of industrialization,its monitoring sites will be increased and more dispersed.Therefore,the traditional flower greenhouse cultivation management method has been unable to meet the needs of the development of the flower industry now.In view of the above situation and also combining with the arrival of the "Internet +" era,to establish a new type of highly intelligent,highly integrated monitoring and management system of greenhouses will promote the development of flower industry better.In this paper,according to the current situation of the existence of backward status quo in the process of monitoring and management in flower greenhouses and the research of the actual demand,the developer has developed a complete set of flowers greenhouses environmental parameters monitoring system combined with the We Chat public platform and the embedded technology which used the embedded Linux system implement multitasking real-time collaborative management.This monitoring system hardware platform consists of three parts: host computer,slave computer and the communication module between them.In this monitoring system the host computer puts S3C2440 processor as the core and the embedded Linux operation system as the software platform,transplants the boa embedded server and SQLite embedded database for the real-time processing,storage and display of the sampled data.The slave computer selects STC15F2K60S2 microcontroller as the processor and uses the corresponding data acquisition module sampling for th e greenhouse environment parameters such as the temperature and humidity,the sampled data will be transferred to the host computer by the wireless data transmission module.The flower growers can not only login in the monitoring system to query the greenh ouse environment parameters by PC,but also get the real-time greenhouse environment parameters through the We Chat public platform,it will improve the intelligent degree of the flowers greenhouse environmental parameters monitoring system greatly.In addition,this paper has also analyzed the error sources of data acquisition system,especially calculated and analyzed the error of amplifier circuit caused by the precision of the resistance,a new method of zero drift compensation was put forward,thus further improved the precision of the monitoring system.The test shows that the monitoring system runs stable and reliable with low power consumption and also easy to expand,all indicators have reached the expected design targets.