The Design And Implementation Of Portable Agricultural Microclimate Data Acquisition System

In recent years, with the rapid development of the domestic agricultural modernization process, there is an urgent need of a kind of agriculture microclimate data acquisition system of real time, which is applicable to popularity, low cost, low power consumption, stability and reliability, improving people's awareness of the relationship between crop growth and microclimate.The research and application in relevant respects of our country starts late, There are already some products on the market, but they generally have some problems such as: incomprehensive function, high cost,large power consumption,specialization of operation,poor universality and expansion ability of sensors etc, making them hard to be widely used in agricultural production. The purpose of developping the portable data acquisition system is to concentrated and powerful solve the above problem.On the research and analysis of related literature and existing research achievements, this paper made clear the goal of this study, the content and the technical route, namely on the basis of the android mobile phone, with the Internet of things technology, bluetooth technology, sensor technology, data collection technology, etc., implementing a set of portable agricultural microclimate data acquisition system of low cost, small power consumption, simple and humanistic operation on spot. Secondly, this paper have researched and stated the android platform, bluetooth and sensors and some technology related and the system uses a number of sensors of independent research and development, and cooperates with the flexible use of energy saving technology, eventually greatly solving the problem of the high cost and large power consumption of existing products on the market. thirdly, studying and designing the hardware circuit of system, the hardware is mainly composed of various kinds of sensors, MCU, serial interface circuit, power circuit, circuit of system power detection, energy-saving circuit, external port, protection circuit and other parts, and the parameters and characteristics of the sensors are introduced in detail. Finally, the system software and protocol used in the frame is designed and improved, system software mainly includes the design and the development of the data acquisition terminal software and the mobile terminal APP.Communication protocol includes the Establishing of format of the protocol and the design of the various related instructions. The system has been put into use in Meitan County, Guizhou Province tea fields. Results show that the system has stable performance, low consumption, low cost, simple operation, easy extensibility.