초록 ▼

The thermostat of the present invention includes a sensor for providing a signal representative of the actual temperature within a space. A microcomputer is coupled to the sensor and intermittently utilizes power at a first level when in an operating state for controllably generating output signals

The thermostat of the present invention includes a sensor for providing a signal representative of the actual temperature within a space. A microcomputer is coupled to the sensor and intermittently utilizes power at a first level when in an operating state for controllably generating output signals in response to the temperature signal. The microcomputer is adapted to be connected to a battery as a sole power source therefor. An isolating interface device such as an electromagnetic relay is coupled to the microcomputer and is adapted for connection to temperature-affecting equipment such as a heating or cooling system controller. The relay actuates the equipment in response to output signals from the microcomputer. A voltage detection circuit may optionally be provided for signalling a low battery voltage condition.

대표청구항 ▼

A battery powered thermostat including: a sensor for providing a signal representative of the actual temperature within a space; a microcomputer connected to said sensor and intermittently utilizing power at a first level when in an operating state for controlling an isolating interface relay in res

A battery powered thermostat including: a sensor for providing a signal representative of the actual temperature within a space; a microcomputer connected to said sensor and intermittently utilizing power at a first level when in an operating state for controlling an isolating interface relay in response to said temperature signal; a voltage sensing circuit connected to said microcomputer and including a temperature indicating resistor, said sensing circuit and said microcomputer being adaptable to periodically compare a voltage across said resistor with the voltage of a battery and generate a signal when said resistor voltage is equal to a predetermined percentage of said battery voltage, and; a network connected to said microcomputer for permitting the conversion of said thermostat between Fahrenheit and centigrade control modes.