A device and method for measuring temperature is disclosed. The device, for example, can include a thermocouple configured to generate a voltage indicative of a junction temperature; a memory device configured to store a unique device ID and to store data; a logic unit connected to the thermocouple and the memory device; an I/O interface connected to the logic unit, the I/O interface configured to communicate with a computer system; and an internal temperature sensor connected to the logic unit, the internal temperature sensor configured to determine a cold junction temperature.

Environmental condition sensor device and method

An interior atmosphere control system contains a group of sensors to detect/measure indoor and outdoor air temperature, humidity, air pressure, oxygen content, carbon-dioxide content, static electric charge, indoor wall temperature, sound and light. These measured results, through a signal transfer interface, are sent to a microcomputer which also accepts a user's command as input data through a user's interface. The microcomputer, based on a monitor/control program and data prestored in its memory unit, the sensed values, and the user's command, will then execute the necessary calculation, comparison and decision, and output adequate time variant control signals, through an output interface, to actuate a series of actuators to adjust the indoor temperature, humidity, air pressure, oxygen content, carbon-dioxide content, wind speed, static electric charge, magnetic field, sound, odor, and light which will generate different atmospheric modes, for example, to make people feel comfortable, refreshed, awakened, energetic, sleepy, uneasy, or even frightened. Above all, these feelings are promoted on the basis of the natural balance of human body, such as heat release and perspiration, by adjusting, the room temperature, humidity, wind speed and other factors.

Interior atmosphere control system

A system, method and apparatus is provided for monitoring and adjusting the quality of indoor air. A sensor array senses an air sample from the indoor air and analyzes the air sample to obtain signatures representative of contaminants in the air sample. When the level or type of contaminant poses a threat or hazard to the occupants, the present invention takes corrective actions which may include introducing additional fresh air. The corrective actions taken are intended to promote overall health of personnel, prevent personnel from being overexposed to hazardous contaminants and minimize the cost of operating the HVAC system. The identification of the contaminants is performed by comparing the signatures provided by the sensor array with a database of known signatures. Upon identification, the system takes corrective actions based on the level of contaminant present. The present invention is capable of learning the identity of previously unknown contaminants, which increases its ability to identify contaminants in the future. Indoor air quality is assured by monitoring the contaminants not only in the indoor air, but also in the outdoor air and the air which is to be recirculated. The present invention is easily adaptable to new and existing HVAC systems. In sum, the present invention is able to monitor and adjust the quality of indoor air in real time by sensing the level and type of contaminants present in indoor air, outdoor and recirculated air, providing an intelligent decision about the quality of the air, and minimizing the cost of operating an HVAC system.

Method, system and apparatus for monitoring and adjusting the quality of indoor air

An environmental control system providing a healthful environment in an enclosed structure for people living, working, travelling, or spending leisure time in the structure. The environmental control system may include a heating, ventilating and air conditioning unit, for controlling the temperature and humidity of air within the structure and pressurizing the interior of the structure, and an air cleaning system. The air cleaning system preferably includes a pre-filter unit to remove larger particulates, a medium efficient extended surface type filter device for capturing smaller particulates, a chemical and/or activated carbon filter device to provide gas phase air purification and scrubbing, and a high efficient particulate air filter device. If desired, an electronic air filter device can be included. An air quality measuring unit monitors the cleanliness of the air passing from the system. Pressure measuring devices may be installed across each filter unit so that the need to clean or replace a particular filter unit can be determined from a higher than normal pressure drop across the unit.

Air control system providing healthful enclosed environment

A fan control system suitable for use in air moving applications has a pressure sensor responsive to an air pressure in an air duct for supplying a static pressure signal representative of the air pressure. A supply air flow sensor is responsive to an air flow in a supply air duct and supplies a supply air flow signal representative of the air flow in the supply air duct. A return air flow sensor is responsive to an air flow in a return air duct and supplies a return air flow signal representative of the air flow in the return air duct. A supply fan moves air in the supply air duct. The supply fan is driven by a supply fan motor. A return fan moves air in the return air duct. The return fan is driven by a return fan motor. A unitary volumetric air flow controller is connected to the supply fan motor and to the return fan motor. The air flow controller selectively applies a supply drive power signal to the supply fan motor to energize the supply fan motor, and selectively applies a return drive signal to the return fan motor to energize the return fan motor. The power drive signals are responsive to the static pressure signal, supply air flow signal, and return air flow signal.

HVAC custom control system

An improved system for maintaining atmospheric conditions within prescribed parameters throughout the interior of a building. The building interior is essentially an enclosed system and sufficient outside air is admitted through air handling units to continuously maintain the interior of the building under a slight positive pressure throughout. Controllable vents are provided at strategic locations around the perimeter of the building, and sensing units are located throughout the building to continuously monitor atmospheric conditions such as temperature, humidity, and the level of particulates and pollutants. The sensing units or monitoring stations are periodically polled by a central computer, with signals from each station providing an indication of atmospheric conditions at that station. The signals representing existing atmospheric conditions are compared with stored data indicative of prescribed parameters for desired atmospheric conditions at the stations. Signals are generated in repsonse to noted deviations from the prescribed parameters, and the signals are utilized to regulate the controllable vents and air handling units so as to modify the incoming air or cause air to be discharged through appropriate vents in the area of the monitoring station until atmospheric conditions again fall within the prescribed parameters. Air is thus delivered from the air handling units to specified areas in a controlled manner without the use of ductwork.

Regulation of atmospheric conditions within a confined space

An airhouse (10) for supplying conditioned air to the interior of an enclosed building Matched twin blowers (25) symmetrically arranged within the airhouse enclosure are operated in unison to insure a balanced air flow into the airhouse and through the blowers A burner unit (66) mounted intermediate the blowers is flanked by matching outside air inlets (62) having controllable dampers (82), preferably of a canister-type, operable in opposition A building return air inlet (80) located midway between the blowers likewise has canister-type dampers (84) operable in opposition

Twin blower airhouse

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Regulation of atmospheric conditions within a confined space

Twin blower airhouse