Direct digital control apparatus for automated monitoring and control of building systems
First Claim
1. A low level microprocessor based system controller comprising:
- power supply means for providing a source of regulated electrical power to the controller;
field programmable processor means for transferring selected data base information to and receiving status signals from an interface means, digitally executing algorithms respecting said status signals in accordance with computer program routines selected from a library of mnemonically identified routines residing in the read-only memory portion of the processor means and responsively directing programmed data and digital command signals to said interface means;
interface means for periodically updating the data base of said processor means, analyzing and conditioning signals received from said processor means and from remote data points, and for selectively controlling said remote data points, and;
operator panel means having information display means, said operator panel means cooperating with said processor means for displaying and adjusting selected system operating parameters and variables.
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Accused Products
Abstract
A low level, microprocessor based direct digital system controller includes power supply means for providing a source of regulated electrical power to the controller. A field programmable processor means transfers selected data base information to and receives status signals from a field interface means, digitally executes control and energy management algorithms respecting those signals in accordance with computer program routines selected from a library of mnemonically identified routines residing in the read only memory (ROM) portion of the processor means. The processor means responsively directs programmed data and digital command signals to the field interface means which periodically updates the data base of the processor means, analyzes and conditions signals received therein from the processor means and from remote data points and selectively controls the data points. An operator panel means having information display means is coupled to the processor means for displaying and adjusting selected system operating functions. An optional field termination board facilitates connection of external wiring to the controller.
320 Citations
40 Claims
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1. A low level microprocessor based system controller comprising:
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power supply means for providing a source of regulated electrical power to the controller; field programmable processor means for transferring selected data base information to and receiving status signals from an interface means, digitally executing algorithms respecting said status signals in accordance with computer program routines selected from a library of mnemonically identified routines residing in the read-only memory portion of the processor means and responsively directing programmed data and digital command signals to said interface means; interface means for periodically updating the data base of said processor means, analyzing and conditioning signals received from said processor means and from remote data points, and for selectively controlling said remote data points, and; operator panel means having information display means, said operator panel means cooperating with said processor means for displaying and adjusting selected system operating parameters and variables. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system controller capable of digitally executing control and energy management algorithms and comprising:
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field programmable processor means including memory means and a master processor having a predetermined protocol program established therein, and further including a plurality of peripheral processors for receiving signals from said master processor, generating a serial command transmission to a field interface means and permitting data exchange entry and update between said master processor and an operator panel means; programmable field interface means for providing message communication between said processor means and field equipment points of analog and binary types; operator panel means incorporating keyboard means for permitting an operator to query the status of each of a plurality of functions, to display information regarding said functions and to selectively modify said functions in accordance with a predetermined program; power supply means incorporating isolated direct current supply means for providing a source of regulated electrical power to the controller. - View Dependent Claims (9, 10, 11, 12)
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13. A system controller for performing heating, ventilating and air conditioning control and energy management functions comprising:
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power supply means for providing a source of regulated electrical power to the controller, said power supply means including isolated direct current supply means for isolating electrical noise; processor means incorporating a memory section having a first data base for defining data points and a first group of program routines maintained therein for the generation of control command signals; field interface means for receiving said control command signals from said processing means, said field interface means having a second group of program routines and a second data base maintained therein, said second data base defining a plurality of field points, said field interface means periodically updating said first data base; operator panel means coupled to said processor means and including keypad means and luminary numerical and digital display means, said operator means providing control and monitoring communications when said controller is functioning in either a standalone or network coupled mode. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A low level system controller for performing distributed data processing, control and energy management functions related to heating, ventilating and air conditioning applications and comprising:
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power supply means including an isolated direct current supply section, said power supply means providing a source of regulated electrical power to said controller; processor means including a master microprocessor and a plurality of peripheral microprocessors for receiving field point status signals, digitally executing control and energy management algorithms and responsively directing digital command signals to a field interface means; field interface means for analyzing and conditioning signals received therein from said processor means and from remote field equipment points, said field interface means including a data base related to field point definition and downloaded thereto from said processor means; operator panel means having keypad means and a plurality of illuminated information display means cooperating for selectively displaying and adjusting system operating parameters, and; field termination means facilitating wiring connection of field equipment to said power supply means, processor means, field interface means and operator panel means. - View Dependent Claims (24, 25, 26, 27)
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28. A low level system controller for heating, ventilating and air conditioning applications and including:
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a power supply having a line power section and a regulated power assembly for supplying a filtered DC voltage having positive and negative polarities, a transistor network and a circuit for controlling the DC base drive to said network, thereby providing leading edge signal shaping for the minimization of high frequency noise; said power supply further including a memory supply for providing operating power to a memory regulator and a standby battery for maintaining memory in a data-retaining state; a processor means including a master processor section, a memory section, a register section, a communications section and a decoder section; a field interface means coupled to said power supply and to said processor means and including means for interfacing with analog and binary field data points; an operating panel for providing control and monitoring communications between a human operator and the controller, said operating panel including a first peripheral processor, a first clock buffer section, an address decoder section, a keyboard and a display section. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification