Patent ID: 6772049
Filing Date: 2004-08-03
Classification: F24F,G05D

Abstract:
A centralized automatic energy control system for managing energy efficiently in a hotel or motel facility with multi room environment, the control system comprises:a central controller means; and plurality of local controller means; wherein the central controller means for controlling individual room's heating, airconditioning, lightings automatically from a central location further comprising: a) microcontroller for; inputting room address number from keypad during check in, check out process of a guest into, or out of, a room, transferring occupied and vacant preset limit temperatures to a local controller located in each room, maintaining room status table in memory within the microcontroller, updating room status LED matrix, outputting the room address during check in and check out process, updating preset limit temperatures and keeping them inside memory, maintaining the programs for the aforementioned functions; b) LED Matrix means for displaying the room status whether checked out, checked in, or the room is clean by different colors; c) keypad means for inputting room numbers during check in, or check out process, inputting preset limit temperature values for the occupied and vacant states; d) function control push buttons defined as IN, OUT, UPDATE, and RESET buttons, for checking in, checking out, updating vacant room limit temperature and occupied room limit temperature, and resetting the system; e) display means for displaying occupied preset limit temperature value and vacant preset limit temperature value, and displaying room numbers during check in and check out process; f) tone generator means for converting a digital data to a DTMF data, and transmitting room address and the preset temperature values; g) tone receiver mean for converting a DTMF data to a digital data, and receiving room status information from local controllers; h) existing telephone lines for data transmissions between the central controller and the local controllers.