Abstract:
A conventional control system for an electrical heating or cooling apparatus has a thermostat 103 which controls a compressor 102 to cycle on and off. For peak load periods, a load shedding signal is sent out by the power company which controls a duty cycler 100 via a radio receiver 101. The duty cycler 100 sets reference ON and OFF times from the last thermostat cycle, and thereupon over-rides the thermostat by preventing the ON time of each cycle from exceeding, and the OFF time of each cycle from being less than, the reference ON and OFF times. To prevent tampering, the reference ON and OFF times may be restricted by preset maximum and minimum values respectively, and reset during a load shed period if the thermostat ON and OFF times fall short of or exceed the reference times respectively. Alternatively, the reference times may be taken from the last thermostat cycle whose times are within preset limits.
Abstract:
A computer-controlled telephone interface system is disclosed which includes telephone line interface (21) connected to one or more telephone lines for receiving and transmitting audio communications including voice communication on the phone lines, an audio interface (23) for receiving and recognizing incoming spoken audio communications and transmitting synthesized speech or recorded speech for outgoing audio communications and including recording means for recording incoming and outgoing audio communications. The system further includes a phone line balance network (22) connected between said audio interface (23) and said telephone line interface (21) which allows simultaneous reception of incoming and transmission of outgoing communications. A telephone dialer (20) for dialing outgoing calls and a telephone line monitor (24) for detecting dial tone, ring, and busy signals associated with outgoing dialed calls may also be provided. A central processing unit CPU (11) for receiving, processing and transmitting data controls each of the functions of the telephone interface system.
Abstract:
A computer-controlled telephone interface system is disclosed which includes telephone line interface (21) connected to one or more telephone lines for receiving and transmitting audio communications including voice communication on the phone lines, an audio interface (23) for receiving and recognizing incoming spoken audio communications and transmitting synthesized speech or recorded speech for outgoing audio communications and including recording means for recording incoming and outgoing audio communications. The system further includes a phone line balance network (22) connected between said audio interface (23) and said telephone line interface (21) which allows simultaneous reception of incoming and transmission of outgoing communications. A telephone dialer (20) for dialing outgoing calls and a telephone line monitor (24) for detecting dial tone, ring, and busy signals associated with outgoing dialed calls may also be provided. A central processing unit CPU (11) for receiving, processing and transmitting data controls each of the functions of the telephone interface system.
Abstract:
A conventional control system for an electrical heating or cooling apparatus has a thermostat 103 which controls a compressor 102 to cycle on and off. For peak load periods, a load shedding signal is sent out by the power company which controls a duty cycler 100 via a radio receiver 101. The duty cycler 100 sets reference ON and OFF times from the last thermostat cycle, and thereupon over-rides the thermostat by preventing the ON time of each cycle from exceeding, and the OFF time of each cycle from being less than, the reference ON and OFF times. To prevent tampering, the reference ON and OFF times may be restricted by preset maximum and minimum values respectively, and reset during a load shed period if the thermostat ON and OFF times fall short of or exceed the reference times respectively. Alternatively, the reference times may be taken from the last thermostat cycle whose times are within preset limits.