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1、英 文 翻 译系 别专 业班 级学生姓名学 号指导教师Research automatic watering system1 introduction With the social modernization step speeding up, automation has become a development topics in todays world. Flowers growth needs to have certain environmental conditions, these conditions are mainly temperature, moisture, il
2、lumination, air composition, composition, physical and mechanical properties of soil and nutrient solution temperature and composition, etc. Flowers can be a good growth is most important of which is the suitability for soil moisture. How to control soil moisture effectively and timely problem has a
3、lready become the flowers AiHuaZhe most issue of concern. Flower proverbs said: dont live in the water, long is fat. Potted flowers and plants due to the volume small, poor water retention performance, large evaporation nor groundwater supply limited by certain conditions, such as the reason, not to
4、 drought, water is particularly important. If potted flower water, plant physiological activities will damage in the body, the absorption of potassium, boron, calcium phosphate is weak, and the lack of these elements can lead to poor growing point nearby growth. Potted flower water shortage will cau
5、se soil nutrient concentrations are relatively high, also appear the most easily hurt fat . Flowers grow, most come from the soil absorption, keep soil moisture content, appropriate is the normal development of flowers and necessary conditions to obtain higher GuanShangPin qualitative. Common flower
6、s according to the water requirement of habits and the different water environment adaptability, can be divided into aquatic flowers and plants, wet flowers, flowers and xerophytic flowers in four. The amount of water in different we need to water the flowers are not the same as 3. Different flower
7、water demand is different, the same flower in different growth stage required quantity is also different. Flowers requirement for soil water varies in each growth stage. We according to the growing season and growth period of flower arrange . To sum up, the reasonable water potted flower is particul
8、arly important. With the constant improvement of automation equipment, all kinds of automatic watering the flowers device also from time to time into the society. According to soil moisture sensor design of automatic watering flowers system can according to crops and different growth stages to the s
9、pecific needs of environmental conditions, adjust to control soil moisture flowers, let the flower can grow well.2 automatic watering technique3.1 based on PC technology research with the development of computer technology with each passing day, the PC can not only used in scientific computing, data
10、 processing, etc., are widely used in industrial production of automatic control, automatic watering flowers requires real-time detection of soil moisture. Real time refers to the timely response to a random request of external events, and fast enough to complete the processing of external events, r
11、eal-time control of all equipment and real-time tasks coordinated operation . The main characteristics of the real-time system is real-time and reliability. With the constant improvement of the PC performance and reliability, PC machine widely used in real-time systems, and the current general opera
12、ting system based on PC (such as WINDOW S systems) do not have good real-time performance, can not satisfy most timing indicator of real-time systems. In order to be able to realize the main control PC and the task of data exchange between PC, WINDOWS and real-time operating systems must be develope
13、d to the communication protocol of data exchange platform, it can be based on a serial port, parallel port, network adapter and USB I/O devices, etc. 3.2 based on the PIC microcontroller technology research of PIC series single chip microcomputer is produced by Microchip companies in the United Stat
14、es, is one of the most widely used PIC16C57 MCU series, there is a lot of about the application of the single-chip microcomputer. The microcontroller using concise RISC structure, two stage instruction pipeline, structure can be completed in a period at the same time the execution of an instruction
15、and the next instruction to take; Using harvard storage structure of double bus, the data and instructions completely separated from the transfer bus, avoid the occurrence of the bottleneck problems; Itself with 8-bit A/D conversion parts, with the synchronous serial port module. Solved the sensor d
16、etection by scaling, display shows garbled, due to interference of electromagnetic valve actuators are some problems such as wrong operation, such as automatic watering system able to better use and flowers, but traditional programming and 51 MCU has certain difference, cant quickly grasp. 3.3 research based on the technology of MCS - 51 single chip microcomputer MCS - 51 series microcontroller is the more familiar wi
