59results about How to "Control ventilation" patented technology

The invention relates to a greenhouse crop digital-imaging method based on ARM and binocular vision. The greenhouse crop digital-imaging method includes steps of S1, calibrating a binocular video camera via a checkerboard calibration method, acquiring left-right images of greenhouse crops by the binocular video camera; S2, correcting the left-right images of the greenhouse crops of the step S1 stereoscopically by the ARM embedded platform and then matching by the improved self-adaptive weight stereoscopic matching algorithm to obtain an initial disparity map, and optimizing disparity of the initial disparity image to obtain a complete disparity map; S3, acquiring a three-dimensional point cloud of the greenhouse crops by means of the triangle ranging theory by an upper computer according to the complete disparity map of the step S2, and rendering the three-dimensional point cloud according to the left-right images of the greenhouse crops of the step S2 and displaying and storing. Compared with the prior art, the greenhouse crop digital-imaging method has the advantages that real-time three-dimensional point cloud information of the greenhouse crops can be obtained, so as to reflect growth conditions and provide control reference based on vision for automatically controlling the greenhouse environment, data accuracy is high, cost is low and the like.

The invention discloses an indoor ventilating device for an ocean passenger ship. The indoor ventilating device comprises a ventilating pipeline, wherein one end of the ventilating pipeline is connected to a connecting tube, one end, away from the ventilating pipeline, of the connecting tube is connected to an air inlet hopper; the ventilating pipeline is connected to the air inlet hopper throughthe connecting tube; and a filter screen is arranged in the air inlet hopper. According to the indoor ventilating device disclosed by the invention, two movable plates capable of moving are arranged,and a spacing distance between the two movable plates can be controlled to control ventilation amount to improve stability of air feeding; a water-absorbing sponge capable of extruding can be arrangedto absorb sufficient water which then can be extruded out to repeatedly use, thereby improving water-absorbing effect; a metal particle filter plate and a steam-water separator further can be arranged to absorb a small part of moist air of the water-absorbing sponge, thereby improving dehumidifying effect; and meanwhile, the metal particle filter plate can filter fine metal particles with diameters smaller than 0.3 micron to make air more fresh.

The invention belongs to the technical field of logistics warehousing, and specifically relates to a logistics warehousing storage rack. The logistics warehousing storage rack comprises a support frame, a mounting plate, a fixed unit, a clamping unit and a dehumidification unit, wherein the mounting plate is fixedly installed on the ground by virtue of the support frame, the fixed unit is arrangedon the upper surface of the mounting plate and is used for fixedly clamping articles, and the clamping unit is used for clamping a support plate. According to the ventilation requirements of the articles, a sliding block is driven to slide by an electric push rod, and a gap between the support plate and the mounting plate is controlled, so that the ventilation of the articles is controlled, and the service life of the articles is prolonged; additionally, the dehumidification unit is arranged, and the dehumidification unit is used for removing water from air, so that the dehumidification efficiency of the logistics warehousing is improved.

The invention belongs to the field of buildings, relates to a damper, and in particular to a building damper. The device comprises a fixed seat; a mounting groove is formed in one side of the fixed seat; a connecting seat is fixedly mounted on the inner wall of one side of the mounting groove; a moving cavity is formed in the connecting seat; a sealing plate is connected to the inner wall of the moving cavity in a sealing and sliding manner; a pull rod is fixedly installed on one side of the sealing plate; one end of the pull rod penetrates through the inner wall of one side of the moving cavity and extends to the outer side of the fixing base; movable racks are fixedly installed at the top and the bottom of the pull rod; and two limiting gears are symmetrically and rotationally connectedto the inner wall of the other side of the mounting groove. The building damper is easy to operate; the ventilation quantity and the effect of a torsion spring are controlled through a flow limiting plate; the damping effect on a building can be achieved; the two transmission modes can be matched; the damping effect on the building is enhanced; and therefore large vibration can be handled.

The invention discloses a system and method for controlling radon seepage in a blasting uranium ore heap of an underground uranium mine stope. The system comprises a terminal regulating controller, afirst temperature and pressure sensor, a second temperature and pressure sensor, a frequency conversion fan, air barrels, an air pressure difference regulating and controlling air door and a flowmeter. The air barrels comprise the flexible air barrel and the rigid air barrel. The first temperature and pressure sensor, the second temperature and pressure sensor, the flowmeter, the frequency conversion fan and the air pressure difference regulating and controlling air door are all connected with the terminal regulating controller. The air barrels are arranged in an air return way. An outlet of the frequency conversion fan is connected with the lower ends or the upper ends of the air barrels. The air pressure difference regulating and controlling air door is arranged on the lower section or the upper section of the rigid air barrel. The flowmeter is arranged on the upper section or the lower section of the rigid air barrel. The first temperature and pressure sensor is arranged in a stoping space. The second temperature and pressure sensor is arranged in an ore drift transportation roadway. According to the system and method for controlling radon seepage in the blasting uranium ore heap of the underground uranium mine stope, radon seepage in the ore heap can be controlled, the seepage radon precipitation amount is minimized, the ventilation quantity of the stope is decreased, energy is saved, and the stope ore heap radon precipitation amount, the mine ventilation cost and the radon release amount of a whole uranium mine to the external environment are decreased.

The invention belongs to the technical field of agricultural product storage and particularly relates to an agricultural product storage and freshness preservation method. A storage device is used. The storage device comprises a bracket and further comprises fixed plates, rotating rollers, bidirectional screws, sliders and support plates. The bidirectional screws are rotated to drive the two sliders to move to be close or separated. The support plates are used for supporting articles. Through the mutual cooperation of the rotating rollers, the bidirectional screws, the sliders and the supportplates, the air flow on the lower surfaces of the articles are increased by the support plates during the movement, therefore, the service lives of the articles are improved, and the practicality of the logistics storage is improved. At the same time, through the mutual cooperation of metal sand particles and cleaning brushes, on one hand, the articles are cleaned, on the other hand, the objects are cleaned by each other, therefore, the cleaning efficiency and effect of cleaning units for the articles are improved, and the cleanliness of the articles is improved.

The invention discloses an engine and a supercharging system thereof. The supercharging system of the engine comprises an air inlet pipeline, an exhaust pipeline, a bypass pipeline and a bypass valve,wherein the air inlet pipeline is connected with an air compressor and an engine body; the exhaust pipeline is connected with the engine body and a turbine; an air inlet end of the bypass pipeline isconnected with the air inlet pipeline, and an air outlet end is connected with the exhaust pipeline; and the bypass valve is arranged on the bypass pipeline and controls the ventilation capacity of the bypass pipeline. According to the engine and the supercharging system thereof, the bypass valve is properly opened at a certain opening according to requirements under the appropriate working condition, supercharged intake air is bypassed to an exhaust side under the action of differential pressure, and the flow and energy of exhausted air are increased after being bypassed, so that the outputpower of the turbine is increased; and due to increase of surge margin of the engine and increase of the air-fuel ratio, the fuel injection quantity can be increased by the engine to obtain higher torque output, the surge problem of a supercharger cannot be caused, and the reliability of the supercharger is improved.

The invention relates to an air film building and a combined air duct thereof. The above-mentioned combined air duct is used to be arranged in the air film building body. The combined air duct includes a composite channel, a dehumidifying air channel, a temperature-regulating air channel, an air supply device, a dehumidifying device and an air conditioning device. The composite channel includes a composite channel body , the first protruding channel, the second protruding channel and the third protruding channel, the composite channel body communicates with the first protruding channel, the second protruding channel and the third protruding channel respectively, and the composite channel body is used to be arranged on In the air film building body, ventilating openings are provided on the composite channel body, and the first extending channel, the second extending channel and the third extending channel are all used to extend into the air film building body; The main body of the dehumidification air duct and the fourth extension channel, the main body of the dehumidification air duct is used to be installed in the main body of the air film building; it solves the problem that the air film building cannot meet the low temperature, low humidity, energy saving and environmental protection requirements of the ice and snow sports venues at the same time.

The invention provides an intelligent agricultural maintenance management system based on Internet-of-Things control. The intelligent agricultural maintenance management system comprises a greenhousewall body, an air inlet hole, an air outlet hole, a sealing mechanism, a filtering mechanism, a temperature adjusting mechanism and a fan mechanism. The intelligent agricultural maintenance managementsystem based on Internet-of-Things control can solve the following problems in the agricultural maintenance management process that a, most ventilation devices related to agricultural greenhouses inthe current market are manually adjusted, the working intensity is relatively high, the environments in the greenhouses are basically controlled by human experience, and agricultural products are notmonitored in real time through an intelligent system; b, most existing ventilation devices do not adjust the temperature of air transmitted into the greenhouses from the outside, and the temperature is adjusted to the optimal temperature for the growth environment of the agricultural products; and c, the existing ventilation devices can only conduct ventilation and cannot effectively control the air speed, the situation that too high air speed affects production of the agricultural products and too low air speed cannot conduct effective ventilation is avoided.

The invention discloses a super-leaching device and method. The device comprises super-leaching cavities, activating structures, ventilation structures, a temperature control structure and a control structure, wherein the super-leaching cavities comprise outer sleeves and inner sleeves, sectional type hollow cavities are formed between the outer sleeves and the inner sleeves, end covers are arranged at two ends of the outer sleeves and two ends of the inner sleeves correspondingly, and the end covers are provided with feeding pipes, lining plates, filtering screens, discharging pipes and medium discharging ports correspondingly; the activating structures comprise shafts, shaft power input structures, pin rods and activation mediums, the ventilation structures comprise air inlet flow metersand ventilation pipelines, the temperature control structure comprises a circulation system composed of circulating water pipelines, and the control structure comprises a pH meter/potentiometer, an oxygen dissolving instrument, a temperature measuring instrument, a pressure gauge and a shaft rotating speed variable-frequency controller; and the invention further provides a super-leaching method.According to the device and the method, wrapping of valuable metals inside minerals can be broken so that the valuable metals can be sufficiently exposed; and meanwhile, the problems that gas mass transfer in the super-leaching device is not uniform, fluctuation of a solution oxidation reduction potential value and a pH value is large, the valuable metal leaching efficiency is low, and the discharging is difficult are solved.

A method for promoting fungus bags to fruit as soon as possible specifically includes the steps of: opening the fungus bags through a punching manner after the fungus bags grow hyphae; then spraying the fungus bags with auxin; and controlling the temperature, the humidity, illumination and ventilation of an environment. According to the method, the fungus bags are opened through the punching manner after the fungus bags grow hyphae, the fungus bags are sprayed with the auxin, and the temperature, the humidity, the illumination and the ventilation of the environment can be controlled; specially through temperature difference stimulation for 10 to 15 days, the hyphae are stimulated and can twist and convert into sporocarp as soon as possible; during a conversion process, conversion of the sporocarp can be quick and the yield of the sporocarp can be greatly improved under the action of the auxin; and the method can control a market of commodity mushroom, grab the opportunity of business, and obtain more economic benefits. The method can be applied to industrial production, intensive production and scale production of edible fungus and mushroom.

The invention belongs to the technical field of agricultural equipment, and particularly relates to a novel cultivation device. The novel cultivation device comprises a moving system, a liquid supplysystem, a bracket system, a control system and an environment system; the liquid supply system and the bracket system are arranged on the moving system, the control system is arranged on the bracket system, and the environment system is arranged at the rear side of the bracket system. According to the novel cultivation device, through moving mechanisms, free movement can be achieved, and the novelcultivation device can be used indoors and outdoors, is wide in application range and is not limited; through a connecting structure, multiple cultivation devices can be assembled together accordingto using requirements, and the use is convenient; through fixing mechanisms, the stability of the novel cultivation device can be improved, and the fixing effect of the novel cultivation device is enhanced. By means of the novel cultivation device, the space utilization rate is increased, and the resource utilization rate is increased; the numbers of supporting frames and layering plates can be set as required, and an adjusting mechanism can adjust the layer height in real time according to the types of cultivation plants and different growth periods of cultivation.

The invention discloses a cream whipping device. The cream whipping device comprises an engine body, a working chamber, a control mechanism, a power mechanism, a delivery mechanism, a ventilation mechanism and a collection mechanism; the working chamber is mounted on the left upper portion of the engine body, and the delivery mechanism is mounted at the top of the engine body; the control mechanism is mounted in the middle of the right side of the engine body, the power mechanism is mounted in the middle of the left side of the engine body, the ventilation mechanism is mounted on the left lower portion of the engine body, and the collection mechanism is movably connected with the left end of the working chamber; support legs are mounted at four corners of the lower end of the engine body;through interaction among the mechanisms, cream can be quickly whipped and then collected. Compared with conventional cream whipping machines, the cream whipping device has the advantages of novel structure, high whipping efficiency and capability of whipping cream with different hardness according to tastes.