604 results about "Ventilation control" patented technology

An arrangement for use in an occupancy-based ventilation system includes a plurality of CO2 sensors and a processing circuit. The plurality of CO2 sensors are disbursed throughout a plurality of spaces in a building. The processing circuit is operably coupled to receive information representative of CO2 measurements generated by the plurality of CO2 sensors. The processing circuit is operable to determine a value corresponding to occupancy, based on information from the CO2 sensors, and to control the flow of fresh supply air into the building ventilation system based on the determined value.

A method provides a ventilation control compliant with an adopted ventilation standard for efficient energy usage and conservation of energy resources. The method includes operating a home energy system to generate solar energy within a daily active period and draw fresh air from an ambient region, setting a daily ventilation period as a fractional period of a day, the ventilation period being coincident with the active period during a heating period for the home or a time period after the active period during a cooling period for the home, determining a target volume, determining a flow rate for delivering the fresh air during the ventilation period, performing ventilation in the ventilation period to deliver the fresh air into the home using the flow rate, and monitoring an accumulated total ventilation volume of the delivered fresh air until the accumulated total ventilation volume is within a vicinity of a target volume.

The invention discloses an operation state control decision making method of a mine ventilation system, and belongs to a mine ventilation control decision making method. The method comprises the following steps: (1) establishing or updating a current mine ventilation system model; (2) acquiring and updating ventilation system parameters in real time; (3) inspecting the rationality of the operation state of the ventilation system; (4) adjusting and solving ventilation network air volume in the case of a given mine total air volume when the operation state of the ventilation system is irrational, and adjusting and optimally solving the ventilation network air volume if a feasible solution is not available yet; (5) determining a fan matching working condition, performing air volume adjustment and solving for gradually expanding natural air distribution on an air network according to a maximum air pressure characteristic curve allowed by the fan, and finally determining an optimal executable scheme for air volume adjustment of the mine ventilation system. A mass flow and air density double-layer iteration method is adopted in the air volume adjustment and solving, and a sensor for monitoring underground air density can be saved. Technical support is provided for keeping rational, stable, reliable and high-efficiency operation of the mine ventilation system for a long time.

The invention discloses a serviced apartment concentrated oil-smoke emission control system comprising household smoke exhaust ventilators in households. Exhaust pipes of the household smoke exhaust ventilators are communicated with a common flue. An output of the common flue is provided with an oil-smoke processing device. The serviced apartment concentrated oil-smoke emission control system is characterized in that an intelligent ventilation control unit is arranged between the oil-smoke processing device and the common flue. The intelligent ventilation control unit is used for detecting parameters of oil-smoke entering the oil-smoke processing device and comparing the detected parameters of oil-smoke with set values. The oil-smoke processing device is controlled and operation states of the oil-smoke processing device are adjusted according to comparison results. The invention also relates to a control method for the above serviced apartment concentrated oil-smoke emission control system. The oil-smoke is emitted in a frequency conversion mode according to needs, thereby saving energy utilization.

A ventilation control apparatus of an indoor ventilation system including an intake device configured to take outside air into an indoor space, the intake device capable of changing an intake amount of the outside air, the ventilation control apparatus includes: a people count detection unit configured to determine the number of people who are present in the indoor space, to be outputted as people count information; and a control unit configured to obtain the people count information and control the intake device so that the more the number of people indicated by the people count information is increased, the greater an amount of the outside air to be taken in becomes.

The invention discloses a method for increasing the oestrus breeding rate of replacement gilts. The method includes the steps of breeding gilt selection, nutrient matching, feed mildewing, illumination control, temperature, humidity and ventilation control, and replacement gilt raising. In the method, vaccine immunity and drug health care should be performed; green fodder should be provided; driving movement, swinery changing, swinery combination and vehicle carrying movement should be performed; oestrus inducing should be performed; recording and short-time high-quality raising should be performed; breeding age in days and weight should be reasonable; concentrated oestrus breeding should be performed. Hormone oestrus promotion, Chinese herbal medicine oestrus promotion, starvation treatment and brown sugar oestrus promotion are performed on the anestrus replacement gilts. According to the invested cost of the method, 5166 replacement gilts are purchased this year, PG 600 needs to be used for 20% of the replacement gilts for oestrus promotion, the cost of the PG 600 used for each replacement gilt is 43 RMB, and the drug cost is 44427.60 RMB; according to the output value, after conventional treatment measures and oestrus promotion of PG 600, the oestrus breeding rate reaches 94.12%. 5166 replacement gilts are introduced, and supposing that the overall oestrus breeding rate is 93%, the standard oestrus breeding rate of the replacement gilts is 90%; the anestrus replacement gilts are sold, and supposing that each replacement gilt is 130 kg and each kg of the replacement gilts is 12 RMB, 411213.60 RMB of loss is reduced.

The invention discloses a vehicular ventilation control system. The vehicular ventilation control system comprises a parameter collecting module, a ventilation control module and a ventilation execution module. The parameter collecting module is used for collecting environment parameters of vehicles, and the environment parameters at least include the parameter of vehicle inside and outside environment information including vehicle inside and outside temperature information. The ventilation control module is used for judging whether collected data meet a preset ventilation condition or not, if yes, an instruction making the ventilation execution module in an execution mode is generated, and if not, an instruction making the ventilation execution module in a stopped state is generated. The ventilation execution module is used for responding the instructions sent out by the ventilation control module. The vehicular ventilation control system can automatically recognize vehicle inside and outside environment parameters and automatically control ventilation and air change in the vehicles according to preset ventilation conditions so that the environment parameters in the vehicles can be maintained within a preset range.

The invention discloses a grain pile dewing early-warning, prevention and control system and method based on temperature field and humidity field coupling. The early-warning, prevention and control system comprises a temperature measurement senor array, an analyzing and early-warning device and a ventilation control device which are sequentially and electrically connected. The temperature measurement senor array comprises a plurality of regularly arranged temperature sensors, the temperature sensors are arranged at different positions in a grain pile, and each temperature sensor is located at an actual measurement point in the grain pile. The analyzing and early-warning device comprises a temperature field building module, a humidity field building module and a coupling module, and the temperature field building module is sequentially and electrically connected with the humidity field building module and the coupling module. The early-warning, prevention and control system and method can predict the time when dewing may occur in the grain pile in several days or tens of days and the positions where dewing may occur in the grain pile in several days or tens of days, thereby avoiding mildew losses, lowering expenditure and guaranteeing the quantity and quality safety of stored grain.

A ventilation controlling apparatus for feeding windshield defrost outlets and side window demist outlets in motor vehicles with one or more air passages and respective doors for each outlet. The apparatus supports a mode in which the demist door opens up to a predefined angle without the defrost door opening, too, with the predefined angle depending on the design of a cam attached to the demist door and a pin engaged with that cam and attached to the defrost door.

A seating assembly includes a seat assembly having a seat carrier. A ventilation control bag is disposed on the seat carrier and includes independent forward thigh support regions. A spacer fabric is disposed over the bag and includes independent forward thigh support regions. A permeable foam heater mat is disposed over the spacer fabric and includes independent forward thigh support regions. A permeable seat trim cover is disposed over the mat. A seatback assembly includes a seatback carrier having upper and lower regions. The upper region is pivotable relative to the lower region. A vent fan assembly is operably coupled with the seatback carrier. A ventilation control bag is in communication with the fan assembly. A spacer fabric is disposed over the bag. A permeable foam heater mat is disposed over the spacer fabric. A permeable seatback trim cover is disposed over the mat.

An anesthesia delivery and ventilation system (ADVS) includes an expiratory section, a circulation flow system (CFS), an inspiratory section, a ventilation drive system (VDS), and an anesthesia delivery system (ADS). The expiratory section receives gases from a patient and the inspiratory section and fresh gases from a fresh gas supply system. An elastic mixing reservoir receives and mixes the gases circulated by the CFS with residual gases via a connector element. The inspiratory section connects to the expiratory section at one end and to a patient connector tube at the other end. The ADS infuses an anesthetic agent into the mixed gases in the inspiratory section. The VDS delivers the mixed gases with the anesthetic agent to the patient. The VDS and the CFS are controlled and operate independently of each other to provide positive end-expiratory pressure control and ventilation control to the patient without use of a proportional valve.

Disclosed in the invention is a simulation experiment apparatus for a ship fire disaster. The apparatus comprises an enclosed cabin, an automatic ventilation control mechanism, a fire source combustion system, a smoke monitoring system, and a data acquisition computer. The enclosed cabin is arranged horizontally; and the proportion of the length to the height of the enclosed cabin is a value less than 10:1. A piece of transparent fire-proof glass is arranged at the side of the enclosed cabin; and composite rock wool structures formed in stain steel plates are formed at the top surface and the bottom surface of the enclosed cabin. The automatic ventilation control mechanism arranged above the enclosed cabin is respectively communicated with the two ends of the enclosed cabin. The fire source combustion system is arranged inside the enclosed cabin; and the distance between the fire source combustion system and a blast pipe is in a range of 1 to 3 meters. The smoke monitoring system is arranged in the enclosed cabin. The data acquisition computer is respectively connected with the fire source combustion system and the smoke monitoring system by a multi-channel data acquisition instrument and is also connected with the automatic ventilation control mechanism.

The invention provides an archive storehouse temperature and humidity wireless control device based on a Zig Bee technology. A temperature and humidity detection unit is used to collect values of temperature and humidity of an archive storehouse, the values are transmitted to a client-side management computer through zigbee wireless relay routing and a wireless gateway, and the client-side management computer analyzes the values and outputs instruction to control a humidity control unit, a temperature infrared control unit, a window automatical open ventilation control unit, and an electric file intensive shelve control unit to conduct automatic adjustment control of temperature and humidity. Temperature and humidity measurement equipment and relay transmission routing equipment transmit data and control the data through a zigbee short-distance wireless communication protocol, a position and quantity of a temperature and humidity collection unit, data transmission, and control of wireless transmission can be flexibly arranged according to actual needs of the archive storehouse, and additional wiring is not needed. All devices, systems, units, and equipment are supplied with power by batteries and are simple and convenient to install.

The invention provides microalgae high-throughout culture equipment comprising a frame, an oscillating mechanism, a temperature control device, a humidity control device, a ventilation control device, an objective table and a lighting device, wherein the objective table is suitable for fixing a culturing structure for containing an algae seed or algae liquid, the lighting device is arranged belowthe objective table and is suitable for providing even lighting for microalgae culture, the lighting device consists of a light source and a light guiding structure which comprises a light guiding layer, light reflection structures are arranged on the side surfaces and bottom surface of the light guiding layer so as to guide light from the light source to emit out from one surface of the light guide layer, therefore, light from the light source is evenly provided to the culturing structure containing the algae seed or algae liquid, and the lighting uniformity degree and lighting intensity formicroalgae high-throughout culture can be improved so as to meet the demands of microalgae growth and high-throughout screening.