Multi-unit energy use monitor
A system is described for monitoring energy use by each user of a common heating/cooling system wherein each user is provided with an individual on/off state thermostat coupled to the system such that when any thermostat is in the on state heating/cooling is provided to the respective user. The energy monitoring system comprises: means for generating clock pulses at a preselected frequency; first gating means, one associated with each of the individual thermostats, having a first input coupled to its respective thermostat, and having a second input coupled to the clock pulse generating means. It also has an output whereby clock pulses are passed to the output of the plurality of first gating means at any time the associated thermostat is on; first counting means, one associated with each of the first gating means, having an input coupled to the output of and operative to count the clock pulses passed by its respective first gating means; means for periodically scanning each of the plurality of first counting means to determine the number of pulses counted thereby since the next previous scan thereof; and means coupled to the scanning means for accumulating the number of pulses counted by each individual counting means during a preselected interval of time and generating an output signal indicating the total amount of time that each thermostat was on during the interval of time.
- Assignee:
- NOV; NOV-87-046494; EDB-87-055008
- Patent Number(s):
- US 4639876
- OSTI ID:
- 6779783
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
BUILDINGS
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
COOLING
COOLING SYSTEMS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ENERGY CONSUMPTION
ENERGY SYSTEMS
EQUIPMENT
FREQUENCY SELECTION
FUNCTION GENERATORS
GATING CIRCUITS
HEATING
HEATING SYSTEMS
MEASURING INSTRUMENTS
MONITORS
PULSE GENERATORS
PULSES
SPACE HEATING
TEMPERATURE CONTROL
THERMOSTATS
TIME MEASUREMENT