613results about "Chemical variable control" patented technology

A water quality detection system for distributed water supply network. The system, 1, comprises a multiplicity of detectors, 5, wherein each detector of the detectors is capable of monitoring at least one attribute of water and providing a signal related to the attribute. A controller, 7, is provided which is capable of receiving each signal and comparing the signal to a control signal for the attribute. A response mechanism, 9, is responsive to the controller and activated when at least one signal matches the control signal. An access gate, 10, limits access to at least one of the detector, the controller or the response mechanism. An access key, 13, is provided for comparing a user attribute with a stored attribute wherein when the user attribute matches the stored attribute access is provided into the access gate.

Methods, systems and computer program products are provided for controlling a climate in a building. Sensed data is received at a local processor in the building. The sensed data is associated with the climate in the building, weather outside the building and / or occupants of the building. The received sensed data is compared at the local processor with corresponding predictive data associated with the climate in the building, weather outside the building and / or occupants of the building. One or more parameters associated with the climate of the building is adjusted at the local processor based on a result of the comparison of the received sensed data and the predictive data.

A dehumidifier system is connected to an interior space of a building through supply and return ducts, either directly and / or through an HVAC system. Controllable dampers can be used to select how the dehumidifier system is connected to the interior space and the HVAC system. The dehumidifier determines the dew point of the ambient air from temperature and relative humidity measurements taken at location(s) of relative humidity and temperature sensors. Based on the determined dew point, the dehumidifier system determines whether to operate. The temperature and relative humidity sensors can be located in the interior space or within the dehumidifier, where they project into the air stream flowing through the dehumidifier. The dehumidifier system operates in response in part to blower calls to the HVAC system and controls the HVAC system and a ventilation system to distribute the dehumidified air and outside air throughout the building.

A ventilation controller including at least one humidity sensor for controlling the humidity of a room. The ventilation controller incorporates a housing sized and shaped to replace, or be placed in, a standard electrical junction box. Circuitry in the controller receives data from the sensor(s). The controller automatically switches on power to an exhaust fan when either the humidity exceeds a manually set humidity level and / or a rapid increase in humidity is observed. When a plurality of sensors is employed, the humidity level from a first sensor is compared by logic circuitry to the humidity levels detected at a reference sensor(s). When the humidity at the first sensor exceeds the humidity at the reference sensor(s), the ventilation controller switches on power to the exhaust fan.

The present invention discloses an electronic cigarette and a method for disposing smoking data of the electronic cigarette. The electronic cigarette includes a microcontroller, a smoking signal detecting module and a memory that are both connected with the microcontroller; the smoking signal detecting module configured to detect smoking signals and send the smoking signals to the microcontroller; the microcontroller configured to record a time of each reception of the smoking signals and a continuation time length of each received smoking signal, and calculate a smoking data according to the time and the continuation time length; the memory configured to store the time, the continuation time length and the smoking data; the smoking data including a time interval between every two smoking signals and a number of receiving the smoking signals during a preset period. The smoking data of the users using the electronic cigarette can be recorded and stored.

Systems and methods for automatically controlling conditions of a process are disclosed. In one example, a controller is programmed with a sequence of steps and parameters required to carry out a bioreactor process. A sensor system interacts with the bioreactor to receive information related to a condition of the bioreactor and / or receive a sample from the bioreactor, which it analyzes. The sensor system sends data signals related to the information and / or the sample to a controller, which determines a control signal based on the received information. The controller sends the control signal to the sensor system which, based on the control signal, performs an action that affects a condition of the bioreactor or affects the sensor system itself.

The invention relates to a method for adjusting concrete rheology requiring only that load size and target rheology value be selected initially rather than requiring inputs into and consultation of a lookup table of parameters such as water and hydration levels, mix components, temperature, humidity, aggregate components, and others. Dosage of particular rheology-modifying agent or combination of rheology-modifying agents is calculated based on a percentage of a nominal dose calculated with reference to a nominal dose response (“NDR”) curve or profile. The NDR profile is based on a correlation between a rheology value (e.g., slump, slump flow, yield stress) and the rheology-modifying agent(s) dose required to change rheology value by one unit (e.g., slump change from 2 to 3 inches) such that exemplary methods can employ corrective dosing based on the NDR and the measured deviation by the system.

A system for controlling water within an aquatic facility includes a water chemistry controller, a variable rate water pump adapted to move water in the facility, and a variable rate motor driver operationally coupled to the water pump for variably energizing the water pump. The variable rate motor driver is coupled to the water chemistry controller to allow the water chemistry controller to manage the operation of the water pump.

Control handover planning for an unmanned aerial vehicle (UAV) is provided that includes determining, by a planning system, a current location of a mobile control system and a current location of the UAV. A target location is identified. A control handover zone is determined based on a communication range constraint between the mobile control system and the UAV. The control handover zone is located between the current location of the mobile control system, the current location of the UAV, and the target location. A mobile control system path plan and a UAV path plan are created that each includes a control handover waypoint in the control handover zone at the same time. The control handover waypoint defines a planned location to place the mobile control system in control of the UAV.

The invention provides a humidity control system (HCS) to control indoor humidity within a specified range so as to reduce indoor house-dust mite allergen levels. The invention also provides a hydrogel absorber / desorber for reversibly absorbing water vapor from air releasing water vapor to air. The invention employs a reversible hydrogel desiccant as the active element for absorption and desorption of water, thus rendering the HCS more effective and energy-efficient than traditional humidification / dehumidification systems. The HCS of the invention treats indoor air by drawing fresh air in from outside and adjusting the humidity of the air-stream. In certain embodiments, fresh air is drawn in from the outside and mixed with recirculated air. The HCS uses a controller to introduce fresh air into the interior space and to control air circulation within it. Relative humidity is monitored remotely throughout the interior space using wired or wireless sensors.

Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool / spa equipment are provided. “Internet-of-Things” (IoT) functionality is provided for pool and spa equipment in a flexible and cost-effective manner. Network connectivity and remote monitoring / control of pool and spa equipment is provided by various components such as a network communication and local control subsystem installed in pool / spa equipment, and other components. Also disclosed are various control processes (“pool logic”) which can be embodied as software code installed in any of the various embodiments of the present disclosure.

An apparatus and method for carrying out and monitoring the progress and properties of multiple reactions is disclosed. The method and apparatus are especially useful for synthesizing, screening, and characterizing combinatorial libraries, but also offer significant advantages over conventional experimental reactors as well. The apparatus generally includes multiple vessels for containing reaction mixtures, and systems for controlling the stirring rate and temperature of individual reaction mixtures or groups of reaction mixtures. In addition, the apparatus may include provisions for independently controlling pressure in each vessel, and a system for injecting liquids into the vessels at a pressure different than ambient pressure. In situ monitoring of individual reaction mixtures provides feedback for process controllers, and also provides data for determining reaction rates, product yields, and various properties of the reaction products, including viscosity and molecular weight.

Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool / spa equipment are provided. “Internet-of-Things” (IoT) functionality is provided for pool and spa equipment in a flexible and cost-effective manner. Network connectivity and remote monitoring / control of pool and spa equipment is provided by various components such as a network communication and local control subsystem installed in pool / spa equipment, and other components. Also disclosed are various control processes (“pool logic”) which can be embodied as software code installed in any of the various embodiments of the present disclosure.

The present invention provides an aircraft navigational system including a graphical user interface that is capable of displaying navigational information in a split-screen format. The split-screen format includes displaying multiple graphical user panels, each depicting different traffic information. For example, one of the panels displays a plurality of air traffic symbols corresponding to airborne obstacles and another of the panels simultaneously displays ground traffic symbols representing ground obstacles. The obstacles can include other aircraft in the air and on runways as the pilot's aircraft approaches for a landing. The navigational system also is capable of switching between a single graphical user panel and multiple panels in response to a triggering event, such as a change in the course of the aircraft.

Controlling the reductive capacity of an aqueous alkaline slurry (23) in a wet scrubber makes it possible to accurately control the mercury emission from the scrubber to a desired value. One method of controlling the reductive capacity of the slurry is to measure the reduction-oxidation potential (“redox potential”) of the aqueous alkaline slurry (23) and to add or remove substances that affect the redox potential and thus the reductive capacity of the slurry. In wet scrubbers in which limestone is used for absorption of acid gases and where a gypsum slurry is circulated, it has been found to be an attractive solution to control the amount of oxidation air blown into the scrubber in order to control the redox potential and thereby the mercury emissions.

Method and apparatus for monitoring, controlling and adjusting sleeper's environmental conditions of the space above entire bed surface by partially sealing and insulating the space above the entire bed surface; monitoring, controlling and adjusting temperature, quality, oxygen level and moisture level of the air within the partially sealed and insulated space according combinational factors of the sleeper's preferences, the sleeper's physiological conditions, heat transfer rate between sleeper's body and ambient air, the internal conditions and external conditions of the partially sealed and insulated space. In particular, a system uses a three-dimensional structure to partially seal and insulate an adequate amount of space above entire bed surface; uses physiological state sensors, thermometers, thermostats, heating device, cooling device, humidistat (hygrostat), humidifier and dehumidifier, oxygen sensor, oxygen supply device, air filtration device to monitor, control and adjust the temperature, moisture level, oxygen level and quality of the air inside the partially sealed and insulated space.

An energy-reducing method and apparatus for retrofitting a constant volume HVAC system, with or without an economizer, that provides heating, cooling, and ventilation to occupants within a building space. The present invention includes the introduction of a programmable logic controller and variable frequency drive (VFD) that takes control of the existing fan, heating, cooling, and optional economizer operation. The controller is programmed for the reduction of fan speed in the heating and cooling modes. The reduction of the fan speed in the ventilation mode when the 100% operation is not needed saves significant energy of the existing constant volume HVAC system where the fan motor is designed to run 100% of the time. The fan speed may be further reduced upon a reduction in sensed occupancy levels of the space, such as with a CO2 sensor. Additionally, the fan speed may be reduced in the heating and / or cooling mode to further reduce energy consumption. The controller may also be programmed and equipped with sensors to allow simultaneous mechanical compressor cooling and economizer free cooling operation, for the operation of the economizer in response to the monitoring of outside air and return air to determine the preferred source for cooling operations, to keep the outside air damper closed during the unoccupied heating modes such as morning warm-up, and / or to provide fault detection. The retrofit method and apparatus may be employed in a stand-alone or networked version.

A method and system are provided for controlling SNCR performance in a fossil fuel boiler. A performance goal for the boiler and data on current boiler performance is obtained. A determination is made as to whether the performance goal is satisfied by the current boiler performance. When the performance goal is not satisfied, the generally closest operating region in which the performance goal would be satisfied is identified. The operating region is associated with desired operating parameters of one or more devices affecting SNCR performance. One or more control moves are determined using the desired operating parameters of the one or more devices for directing the boiler to the operating region. The one or more control moves are communicated to the one or more devices.

This invention concerns methods and apparatus for measuring oxidation reduction potentials of water in a hot water system at system temperature and pressure and methods of using the measured oxidation-reduction potential to monitor and control the addition of oxygen scavengers or oxygen to the system in order to maintain effective corrosion inhibiting concentrations of the oxygen scavengers or dissolved oxygen in the system.

An electronic control system for regulating operational parameters in a pollution removal system. The pollution removal system may contain at least one reaction zone connected to a source of gas and a sorbent feeder containing a supply of sorbent. The system may include a pollutant concentration sensor that measures the concentration of at least one target pollutant in a gas exiting a reaction zone, a differential pressure sensor that measures the differential pressure across a reaction zone, a sorbent feed rate controller that regulates sorbent feed rate to the reaction zone, and a controller in communication with these elements. The controller may use the measured values to adjust sorbent feeder rate to ensure that the target pollutant concentration in a gas exiting the reaction zone is within an acceptable range and that differential pressure across the reaction zone is no greater than a predetermined level.

Systems and methods for automatically controlling conditions of a process are disclosed. In one example, a controller is programmed with a sequence of steps and parameters required to carry out a bioreactor process. The controller receives information related to a condition of the process over a first communication network, determines a control signal based on the received information and the programmed process, and sends the control signal over a second communication network to a benchtop utility tower. In one example, the utility tower can include transmitters for temperature, pH, and dissolved oxygen that send information related to a condition of the process to the controller over the first communication network, and an agitation system, a gas control system, a temperature control system and a pump control system that perform a control action based on the control signal affecting the process condition. The utility tower can include a computer with a human-machine interface that communicates with the controller over a third communication network.

Systems and methods for automatically controlling conditions of a process are disclosed. In one example, a controller is programmed with a sequence of steps and parameters required to carry out a bioreactor process. The controller receives information related to a condition of the process over a first communication network, determines a control signal based on the received information and the programmed process, and sends the control signal over a second communication network to a benchtop utility tower. In one example, the utility tower can include transmitters for temperature, pH, and dissolved oxygen that send information related to a condition of the process to the controller over the first communication network, and an agitation system, a gas control system, a temperature control system and a pump control system that perform a control action based on the control signal affecting the process condition. The utility tower can include a computer with a human-machine interface that communicates with the controller over a third communication network.

A system and a method for automatically, accurately diluting chemical solutions on an industrial scale based upon real time weight measurements of chemical and diluent weight is disclosed.

A window fog detecting system for detecting fog on a windshield of a vehicle, including: a glass temperature detecting system including a contact temperature sensor attached to a portion of the windshield on the driver's seat side of the center in a width direction of the windshield, or to a portion where ceramic print is applied on the upper-side periphery of the windshield; a humidity detection device which detects the humidity of air in a vicinity of the inner surface of the windshield; and a judging device which judges the presence of fog on the windshield, on the basis of the detected values of the glass temperature detecting system and the detected values of the humidity detection device.

Disclosed is a kitchen exhaust hood and makeup unit control system comprising a control device for controlling the variable speed drive (VSD) for the associated fan, and measurement devices comprising Volatile Organic Compound (VOC) gas transmitter devices and temperature transmitters devices. The exhaust fan VSD speed is controlled to maintain the kitchen hood area at certain comfort level (indoor air quality and thermal comfort) by monitoring the VOC concentration and exhaust duct temperature. The air quality sensors measure the concentration of multiple gases and odorous substances in the air with constant output. These substances, for example, may be cooking smoke, kitchen vapors, human odors and unpleasant smells. The exhaust fan speed is controlled using the proportional-integral-derivative (PID) control loop. The kitchen exhaust and make-up unit supply airflow rate may be measured by an airflow measurement means such as Fan Airflow Station. The kitchen make-up unit fan speed is controlled to maintain the constant airflow difference between the exhaust air and make-up air to maintain the slightly negative pressure in the kitchen area.

A temperature and humidity sensor assembly for a heating, ventilation and air conditioning (HVAC) system of a vehicle includes a housing for connection to the HVAC system. The temperature and humidity sensor also includes a humidity sensor disposed within the housing and a temperature sensor disposed within the housing. The temperature and humidity sensor further includes a circuit board disposed in the housing and electrically connected to the humidity sensor and the temperature sensor and for connection to an electronic controller to control the HVAC system.

A ventilation system for regulating atmospheric communication between a first space and a second space includes an airflow regulation device and a control system. The airflow regulation device is disposed in fluid communication with the first and second spaces. The airflow regulation device includes a regulator for regulating airflow and an adjustment system connected to the regulator for adjusting the regulator. The control system includes a first sensor, a second sensor and a microcontroller. The first sensor is in fluid communication with the first space to measure a first atmospheric condition. The second sensor is disposed in fluid communication with the second space to measure a second atmospheric condition. The microcontroller is in communication with the first sensor and the second sensor for comparing the atmospheric conditions. The microcontroller is in communication with the adjustment system for adjusting the regulator in response to differences between atmospheric conditions.

A monitoring system for monitoring fluid used in an environment such as a trade / industrial waste plant or air conditioning cooling tower installation is disclosed. The system includes sensors (26 to 34, 53 to 55) for sensing parameters of the fluid, a remote monitoring system (40) for receiving signals indicative of the measured parameters from the sensors and for applying rules to the signals to determine whether the signals meet predetermined criteria so that an event indication can be generated if the predetermined criteria are not met. The system (40) includes a processor (41) and a memory (42). The system (40) is connected to a central station (72) by a communication link (74). The central station (72) includes a server (80) and data store (82) which are connected to the Internet so the data can be interrogated by a user via a PC (86). The system also generates an audible or visual alarm (62) or forwards a message to authorised personnel via SMS message to a mobile telephone (87) or by e-mail in the case of an event condition being generated. A user is able to log onto the system and interrogate data retained in the system relating to the user's sites to determine the operating parameters of the system and also to determine problems if an event indication is established.

An adaptive membrane structure is provided. The adaptive membrane structure has movable membranes that can be made to change its gas, liquid or particulate permeability in response to surrounding environmental conditions. Such adaptive membrane structures can be used to provide protective apparel that is comfortable to wear wherein the level of protection provided is based on conditions in the environment. The adaptive membrane structures can be used to provide protective enclosures.