Design of automatic watering control system for potted flowers based on single chip microcomputer
Summary: the automatic watering system of potted flowers designed in this paper includes the detection and control of soil temperature and humidity and the automatic water filling and water level alarm of water storage tank. The detection and control of soil temperature and humidity include the detection and display of soil temperature and humidity, and the automatic watering system. The detection and display of soil temperature and humidity is based on the temperature and humidity sensor SHT-11 as the sensing component. The detected soil temperature and humidity value is sent to the AT89C51 single chip computer and then output to the LCD screen for display. The automatic watering system is designed for intelligent and manual parts: the intelligent pouring part sets the upper and lower limits of pouring and SHT through the single chip computer program. When the value of soil humidity is lower than the lower limit, the singlechip outputs a signal to control the solenoid valve to open and start watering. When the value is higher than the upper limit value, the singlechip outputs a signal to control the solenoid valve to close and stop watering; The manual part is from the clock chip DS1302 read into the month and the real time of every day through the software program to set the timing of watering time and the amount of water.
Key words: AT89C51 microcontroller SHT-11 temperature and humidity sensor LCD DS1302 clock chip C51 program digital circuit
1 preamble
1.1 purpose and significance of selected topics
With the progress of social life, peoples quality of life is getting higher and higher. Raising potted flowers at home can cultivate sentiment and enrich life. At the same time, potted flowers absorb carbon dioxide through photosynthesis, purify indoor air, accumulate more anions in the air where there are flowers and trees, so the air is especially fresh, and many flowers and trees can also absorb harmful gases in the air. Potted flowers are now popular with many people.
Whether the pot flower watering quantity can achieve timely appropriate amount is the key to the success or failure of flower cultivation. However, in life, people always have no time to take care of, such as work too busy or business, travel and so on. More than 80% of the growth problems of flowers and plants are caused by the problem of watering flowers; it is not easy to plant flowers and plants for a few months because the water is not in time and the growth is not good, so the flowers and plants used to beautify their homes have almost become 'chicken ribs'. Dont plant, there is no green in the home feel lifeless; keep it, flowers and plants are not strong enough, but also affect the effect of family decoration. Although there are automatic potted flowers on the market, but the price is very expensive, and Most can only set a timing watering time, it is difficult to timely and adequate watering of potted flowers. Also has the more economical potted flower water shortage alarm device, may remind people to water the potted flower in time. But this kind of alarm can only alarm, watering or need people to do it. When there is no one in the house, even when the police are not watered, it will not play its due role. Therefore, I would like to design a potted flower automatic watering system, which integrates pot soil moisture measurement, automatic watering and automatic water supply in storage tank. Let potted flowers be watered in time when people have no time to take care of them.
1.2 background of birth of automatic Flower Moulder and its Development status at Home and abroad
The micro-spray system is a new type of irrigation facility assembled by advanced technology at home and abroad in recent years. It mainly uses the water flow through the low-pressure pipeline system to spew out from the special nozzle at a certain speed, disperses into tiny water droplets in the air, and lands on the flowers and plants. Crops and the surrounding ground, thus achieving the purpose of timely water supply. The system has the characteristics of less water consumption and less impact. It is suitable for plants with high planting density and soft and delicate plants. With the improvement of peoples living standard and the quickening of life rhythm, the automatic flower watering apparatus is a kind of lazy horticulture product. It applies the concept of micro-spray to the watering of potted flowers in families. Through the corresponding improvement, the reasonable automatic watering of potted flowers is achieved.
As early as many years ago, foreign countries have begun to popularize, the domestic use of electronic automatic florist mostly imported from abroad, expensive, but relatively reliable quality. However, this is not very suitable for domestic, at present domestic and foreign more popular is glass-made automatic florist. Most of this type of florist is processed and produced in Shanxi and Zhejiang provinces of China. The price is relatively low and the practicability is not as good as the electronic automatic florist. With the improvement of consumption level and quality of life of domestic residents, the horticultural market at home is extremely popular. However, due to the quickening pace of life, the problem that it is easy to grow flowers is difficult to raise flowers, and the most important problem is to raise flowers. The study shows that more than 80% of the deaths of flowers and plants are caused by not watering in time, so domestic businesses have already seen the potential of this kind of demand. At present, this kind of small home products manufacturers mainly concentrated in Guangdong, Shanghai, Zhejiang area. The main types of automatic florists available on the market are as follows:
1 electronic automatic florist
Electronic automatic sprinkler i
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