Design development and implementation of wired Nurse calling system

In recent decade, hospitals turns into smart hospitals by the advent of recently developed technologies around the world. The growth in technologies like networking and other provides a brighter future and open scenario to interconnect different equipment in the hospitals, which gives us a new field of research which is called nurse calling system. Also due to growth in the fields of communication which aids such facilities with the used to technology. And which indeed make feasible such type of systems in today's world. In a generalized methodology for implementing Nurse calling system make use of a trigger button facility attached to the patient's bed. When pressed by the patient, it alerts the center nurse station by giving out an audible tone or light flashes and requesting patient is severed accordingly by a nurse or other health care staff member. But in recent scenario nurse calling systems are improved and user friendly so they are in demand now. The proposed system is one step toward the remedy of such condition. Which enables the implementation of nurse calling system with more ease by the application of wired technology like RS-485, Modbus protocol, along with wireless technology of RF/ZigBee modules. This proposed nurse calling system is capable of operating large numbers of beds by means of RS-485 Protocols. So automatically controlling devices in a hospital is being feasible by such systems. This system is another step in technology by the technology for ease of a human being.