RS-485 SYSTEM FOR PROVIDING DATA COMMUNICATION SERVICE FOR APARTMENT BASED ON DATA TRANSMITTING PROTOCOL OF RS-485 NETWORK

摘要

A method of providing a common house data service is provided, and receives a call signal from a common entrance that is a porch of a common house, transmits a door open control signal in response to the received call signal, transmits a security alarm to the guard room, and calls from the guard room. Receiving at least one household terminal for performing a call, an identifier for identifying a common house, located between the at least one household and the common entrance, and relaying and controlling signal transmission of each component, and at least one It is located between the main control device, the main control device and the guard room for storing and managing access data for entering and exiting the household of the household, and transmits a call and video calling to at least one household terminal in the common entrance, at least one household Receive the door open control signal from the terminal or guard room to control the door, the number of the apartment house Stores and manages the common entrance terminal for managing the password and authentication card number of the apartment house, and the identifier of the apartment house, makes calls and calls to the household terminals of the apartment house managed by the security office, and It includes a security terminal for performing a call and a call, and generates an alarm when receiving a security alarm from at least one generation terminal.