Design Of Guard Against Theft And Alarm System In Orchard Based On Single-chip

As the urban-rural income gap, regional income gap and increasing mobility, security situation is increasingly complexity. It often occurs criminality such as robbery, theft productions and so on. In the case of rural crimes, there are multiple activities about theft of agricultural products. Owing to the special place (field) and the weak security consciousness, autumn productions are stolen, resulting in loss of output. Traditional security field is often used breaking wire to get safety, but it isn't often used because of complicated wiring, so laissez-faire to the theft. This paper faces to the problems of agricultural production, makes full use of the wireless communication and single-chip control technology, design a vineyard-specific anti-theft alarm system.Alarm system is composed of front-end acquisition and terminal control two parts. It chooses STC89C52 single-chip as the host controller of upper-lower computer to accomplish information collection of field, and uses the wireless transmission as communication. In the front-end acquisition module, the lower computer controls the sensors to collect the abnormal signal of the field. Multiplexer switches the channel selection and sends the signal to A/D converter, conversion results are sent to the single-chip storage. At the same time, the results are sent to the PT2262 coding with serial port, and coded single is sent out with wireless transmission module. In the terminal control module, wireless receiver module receives signals and PT2272 decodes them. After the decoding, the control signals are sent to the upper computer handling. LCD monitor shows alarm place and buzzer sends out sound alarm.Wireless transmission realizes the remote monitoring of signal field. It has more advantages to the traditional cable transmission, such as abandoning the complex wiring operations, reducing the labor intensity of staff and so on. Modular designing ideas in hardware and software are not only convenient to debugging and using, but also improve and perfect the system. It offers the foundation for the future designing.The designing project of vineyard anti-theft alarm system based on single-chip is feasible, strong expandability. It has a wide application prospect in security orchard, an important meaning of the theory and practicality.