"AT89S51单片机医院病房呼叫系统设计研究"

Single-chip microcontroller ward calling system design is a comprehensive implementation of the AT89S51 microcontroller-based wireless calling system for hospital wards. The system is composed of the microcontroller system, wireless transceiver system, function switches, 1602 LCD display, and a voice system primarily controlled by the ISD4004 voice chip. The wireless transceiver system in this system uses the PT2262 and PT2267 decoding and encoding chips of the 315 wireless transceiver module. The communication between the microcontroller and the wireless transceiver system is achieved through serial half-duplex communication. The core controller of the system uses the cost-effective and reliable AT89S51 microcontroller. The main working principle of this system is that the extension unit initiates the call by pressing a button, and the host unit responds with sound and light alarms, simultaneously displaying the call number. The host unit can also initiate a response by pressing a button. The research shows that this system is convenient, fast, and reliable, and it can be applied in various fields such as hospitals, teahouses, KTV, and restaurants. In a market-oriented economy, especially in the service industry, this system can save manpower, money, and energy while increasing efficiency and improving the service image, bringing better economic benefits. It has great potential for development and promotion as an electronic product. Keywords: single-chip microcontroller technology, wireless transmission and reception, wireless calling system.