Patent application number | Description | Published |
20090076705 | POWER MODULATED, DUAL FUEL, SMALL DISPLACEMENT ENGINE CONTROL SYSTEM - An engine capitalizes on the advantages of alternative fuels such as ethanol, E-85, and other alcohols, with a small displacement engine, two cylinders or more, and at least a divided fuel tank or alternatively two tanks. An electronic engine control module selects the fuel for operating conditions and delivers the fuel through separate injection systems. The module selects unleaded gasoline for starting, light load and light cruising conditions. Upon greater demands for engine power, the module adds or switches entirely to a secondary fuel such as alcohol, ethanol, E-85 or other ethanol/gasoline blends and reduces or eliminates the introduction of gasoline fuel. The secondary fuel provides more power than unleaded gasoline, thus reducing the engine displacement required for operating a vehicle under a variety of loads. The present invention seeks a substantial engine power increase, reduction in engine detonation, improved cold starting, re-evaluation of turbochargers, a decrease in gasoline consumption, and gasoline as the default fuel. | 03-19-2009 |
Patent application number | Description | Published |
20110090604 | Digitally Controlled AC Protection and Attenuation Circuit - A protection and attenuation circuit for sensitive AC loads is described. The circuit provides AC power protection and attenuation utilizing high-efficiency switch-mode techniques to attenuate an AC power signal by incorporating a bidirectional, transistorized switch driven from a pulse width modulation signal, PWM. The circuit monitors characteristics of the AC power signal driving a known load and characteristics of the load or other elements and determines the duty cycle of the pulse width modulated signal, PWM, based upon the duration and amplitude of the over-voltage, over-current, over-limit or other event. | 04-21-2011 |
20110096940 | Digital Communication System for Loudspeakers - A communication system for communicating with at least one loudspeaker is described where the loudspeaker is connected to audio equipment over standard two-wire speaker wire operable to carry an audio signal. The communication system includes a master node in electrical communication with a signal path carrying the audio signal between the audio equipment and the loudspeaker, the master node also including an interface with the audio equipment, a data encoder operable to encode data signals, a data transceiver operable to place the data signals onto the audio signal at frequencies above audio frequencies. The communication system also includes at least one slave node in electrical communication with the audio signal and each loudspeaker, the slave node including a data transceiver operable to receive data signals from the master node, a data decoder, and an interface able to communicate with the loudspeaker. | 04-28-2011 |
20140062441 | Digitally Controlled AC Protection and Attenuation Circuit - A protection and attenuation circuit for sensitive AC loads is described. The circuit provides AC power protection and attenuation utilizing high-efficiency switch-mode techniques to attenuate an AC power signal by incorporating a bidirectional, transistorized switch driven from a pulse width modulation signal, PWM. The circuit monitors characteristics of the AC power signal driving a known load and characteristics of the load or other elements and determines the duty cycle of the pulse width modulated signal, PWM, based upon the duration and amplitude of the over-voltage, over-current, over-limit or other event. | 03-06-2014 |
20150035363 | Performance and Isolation Improvements for Digitally Controlled AC Attenuation and Protection Circuits - A protection and attenuation circuit for sensitive AC loads is described. The circuit provides AC power protection and attenuation utilizing high-efficiency switch-mode techniques to attenuate an AC power signal by incorporating a bidirectional, transistorized switch driven from a pulse width modulation signal, PWM. The circuit monitors characteristics of the AC power signal driving a known load and characteristics of the load or other elements and determines the duty cycle of the pulse width modulated signal, PWM, based upon the duration and amplitude of the over-voltage, over-current, over-limit or other event. | 02-05-2015 |
20150189430 | Digital Communication System for Loudspeakers - A communication system for communicating with at least one loudspeaker is described where the loudspeaker is connected to audio equipment over standard two-wire speaker wire operable to carry an audio signal. The communication system includes a master node in electrical communication with a signal path carrying the audio signal between the audio equipment and the loudspeaker, the master node also including an interface with the audio equipment, a data encoder operable to encode data signals, a data transceiver operable to place the data signals onto the audio signal at frequencies above audio frequencies. The communication system also includes at least one slave node in electrical communication with the audio signal and each loudspeaker, the slave node including a data transceiver operable to receive data signals from the master node, a data decoder, and an interface able to communicate with the loudspeaker. | 07-02-2015 |
Patent application number | Description | Published |
20140148958 | Universal Apparatus and Method for Configurably Controlling a Heating or Cooling System - A system for controlling the operation of a heating or cooling system includes a system controller, a memory in which system parameter information relating to the heating or cooling system is stored, and a communication device through which the system controller is configured to transmit and receive signals to/from at least one component controller. The system controller is configured to receive via the communication device a data signal from the at least one component controller that includes information relating to operational parameters for at least one system component installed in the heating and cooling system. The system controller is configured to store in the memory the received operational parameters corresponding to the at least one system component. The stored operational parameters may be retrievable for communication to a replacement component controller in the event that the at least one component controller is replaced. | 05-29-2014 |
20140312127 | Battery Power Management in a Thermostat With a Wireless Transceiver - A thermostat includes a controller for controlling the thermostat, a battery supplying power for the thermostat, and a wireless transceiver for receiving control information from a remote device and for transmitting information to the remote device. The controller sets a default time schedule for enabling the wireless transceiver. | 10-23-2014 |
20140312129 | Power Stealing for a Wireless-Enabled Thermostat - Disclosed are exemplary embodiments of apparatus, systems and methods for power stealing for a wireless-enabled thermostat. In an exemplary embodiment, a wireless-enabled thermostat generally includes a control having a wireless network interface that intermittently connects the thermostat in a wireless network in accordance with a duty cycle, the duty cycle having a connect time in which the thermostat is connected in the wireless network and a sleep time in which the thermostat is not connected in the wireless network. A power stealing circuit of the thermostat steals power through an “on-mode” load of a climate control system to charge a capacitor or other energy storage device to provide the power for the wireless network interface. The control adjusts at least the sleep time in accordance with a time for charging the capacitor or other energy storage device to a threshold voltage. | 10-23-2014 |
20150176854 | HVAC Communication Bus Decoders and Corresponding Methods - In exemplary embodiments, HVAC communication bus decoders and corresponding methods are disclosed. In an exemplary embodiment, an HVAC communication bus decoder includes a control circuit having an input for coupling to an HVAC communication bus and one or more relays each having an output for coupling to a legacy HVAC system monitoring device. The control circuit is configured to read one or more messages transmitted on the HVAC communication bus, decode the one or more messages to determine a desired mode of operation called for by a thermostat connected to the HVAC communication bus, and energize at least one of the one or more relays to emulate a corresponding legacy HVAC signal representing the mode of operation called for by the thermostat to be provided to the legacy HVAC monitoring device. | 06-25-2015 |
20150369506 | Battery Power Management in a Thermostat With a Wireless Transceiver - A thermostat includes a controller for controlling the thermostat, a battery supplying power for the thermostat, and a wireless transceiver for receiving control information from a remote device and for transmitting information to the remote device. The controller sets a default time schedule for enabling the wireless transceiver. | 12-24-2015 |
Patent application number | Description | Published |
20090049847 | UNITARY CONTROL FOR AIR CONDITIONER AND/OR HEAT PUMP - A unitary control for operating at least the fan and compressor of a climate control apparatus in response to signals received from a thermostat, the unitary air conditioning control includes a circuit board, a microprocessor on the circuit board; a first relay on the circuit board operable by the microprocessor, to connect a fan connected thereto to line voltage, and having first and second contacts at least one of which is connected to the microprocessor; and a second relay on the circuit board operable by the microprocessor, to connect a fan connected thereto to line voltage, and having first and second contacts connected to the microprocessor. | 02-26-2009 |
20090065597 | LOW VOLTAGE POWER LINE COMMUNICATION FOR CLIMATE CONTROL SYSTEM - A system for controlling one or more components of a climate control system is provided that includes one or more controllers in connection with low voltage power lines for powering the one or more controllers. The controllers are further capable of transmitting one or more communication signals via the low voltage waveform. The system includes a thermostat controller, at least one system controller for a heating or cooling system, and a controller for a circulating air blower. The thermostat controller, system controller and circulating air blower controller are connected to each other only through each controller's individual connection to the hot and common low voltage power transmission lines. Each controller is capable of transmitting one or more signals that are superimposed onto the low-frequency low-voltage waveform and include information identifying a destination controller that the signals are intended for. | 03-12-2009 |
20090261174 | CONTROL SYSTEM PROTOCOL FOR AN HVAC SYSTEM - The present disclosure describes an HVAC system and means for communication between an integrated system of individual controllers for interactively controlling various components in the HVAC system. Various embodiments of an HVAC system are provided that may comprise at least two controllers that communicate with each other to provide a method of controlling the operation of an HVAC system, based on a communication protocol utilized by each of the various controllers. The communication protocol provides for establishing communication between a sending controller and at least one other controller that is the intended recipient. The communication protocol also provides for monitoring of communication signals by one or more controllers in the system, where the one or more controllers monitor communication signals which are intended for other recipient controllers to thereby listen to information being communicated. | 10-22-2009 |
20090261767 | Universal apparatus and method for configurably controlling a heating or cooling system - A system controller is disclosed that includes a communication means for transmitting and receiving information from an installed blower motor controller, and a removable memory device connected to the system controller. The removable memory device includes system parameter information stored thereon that relates to the particular heating or cooling system, where the system parameter information includes at least motor related parameters relating to the operation of one or more types of blower motors. The system controller further includes a processor configured to receive via the communication means the communication of identifying information from the blower motor controller that identifies the type of blower motor installed in the system. The processor is configured to retrieve motor related parameters corresponding to the specific identified blower motor controller from the memory device, and to send said corresponding motor related parameters to the blower motor controller. | 10-22-2009 |
20100009303 | STEPPER MOTOR VALVE AND METHOD OF CONTROL - A stepper-motor gas valve control is disclosed that includes a main diaphragm in a chamber that controllably displaces a valve relative to an opening in response to changes in pressure, to adjust fuel flow through the valve. A servo-regulator diaphragm is provided to regulate flow to the main diaphragm, to thereby control the rate of fuel flow. A stepper motor is configured to move in a stepwise manner to displace the servo-regulator diaphragm, to control fluid flow to the main diaphragm. A controller mounted on the stepper-motor regulated gas valve control receives and converts an input control signal from a heating system to a reference value between 0 and 5 volts, and selects a corresponding motor step value. The control responsively moves the stepper-motor in a step wise manner to displace the servo-regulator diaphragm and thereby regulates the rate of fuel flow through the valve. | 01-14-2010 |
20100204945 | System and Method for Detecting Fluid Delivery System Conditions Based on Motor Parameters - Systems and methods for detecting various system conditions in a fluid delivery system (such as an HVAC system) based on a motor parameter are disclosed. Embodiments of the present invention relate to detecting: filter condition, frozen coil condition, register condition, energy efficiency, system failure, or any combination thereof. Embodiments of the present invention relate to detecting fluid delivery system conditions based on motor parameters including system current, system power, system efficiency, motor current, motor power, motor efficiency, and/or a change (or rate of change) in motor parameters. Techniques for responding to a clogged filter and a frozen coil are also disclosed. Also disclosed are techniques for characterizing a fluid delivery system off-site, prior to system installation. | 08-12-2010 |
20110066289 | UNIVERSAL APPARATUS AND METHOD FOR CONFIGURABLY CONTROLLING A HEATING OR COOLING SYSTEM - A system controller is disclosed that includes a communication means for transmitting and receiving information from an installed blower motor controller, and a removable memory device connected to the system controller. The removable memory device includes system parameter information stored thereon that relates to the particular heating or cooling system, where the system parameter information includes at least motor related parameters relating to the operation of one or more types of blower motors. The system controller further includes a processor configured to receive via the communication means the communication of identifying information from the blower motor controller that identifies the type of blower motor installed in the system. The processor is configured to retrieve motor related parameters corresponding to the specific identified blower motor controller from the memory device, and to send said corresponding motor related parameters to the blower motor controller. | 03-17-2011 |
20110178773 | System and Method for Detecting Fluid Delivery System Conditions Based on Motor Parameters - Systems and methods for detecting various system conditions in a fluid delivery system (such as an HVAC system) based on a motor parameter are disclosed. Embodiments of the present invention relate to detecting: filter condition, frozen coil condition, register condition, energy efficiency, system failure, or any combination thereof. Embodiments of the present invention relate to detecting fluid delivery system conditions based on motor parameters including system current, system power, system efficiency, motor current, motor power, motor efficiency, and/or a change (or rate of change) in motor parameters. Techniques for responding to a clogged filter and a frozen coil are also disclosed. Also disclosed are techniques for characterizing a fluid delivery system off-site, prior to system installation. | 07-21-2011 |
20130164696 | Stepper Motor Gas Valve and Method of Control - A stepper-motor gas valve control is disclosed that includes a main diaphragm in a chamber that controllably displaces a valve relative to an opening in response to changes in pressure, to adjust fuel flow through the valve. A servo-regulator diaphragm is provided to regulate flow to the main diaphragm, to thereby control the rate of fuel flow. A stepper motor is configured to move in a stepwise manner to displace the servo-regulator diaphragm, to control fluid flow to the main diaphragm. A controller mounted on the stepper-motor regulated gas valve control receives and converts an input control signal from a heating system to a reference value between 0 and 5 volts, and selects a corresponding motor step value. The control responsively moves the stepper-motor in a step wise manner to displace the servo-regulator diaphragm and thereby regulates the rate of fuel flow through the valve. | 06-27-2013 |
20140034284 | Interactive Control System for an HVAC System - An interactive system for controlling an HVAC system includes a thermostat for initiating HVAC system operation in a full-capacity or reduced-capacity mode of operation, and a controller for an outside condenser unit having condenser fan and compressor motors. The controller may operate the compressor in a full-capacity or reduced-capacity mode. A controller for an indoor blower unit having a blower fan motor may operate the blower fan motor in a full-capacity or reduced-capacity mode. A communication means is provided for transmitting information between the outside condenser unit controller and indoor blower controller. The indoor blower controller responsively controls blower fan motor operation in a full-capacity or reduced-capacity mode based on the information received from the outdoor unit controller. The outdoor unit controller responsively controls compressor operation in a full-capacity or reduced-capacity mode based on the information received from the indoor blower controller. | 02-06-2014 |