40results about How to "Reduced temperature control requirements" patented technology

A greenhouse growing environment has a distributed control system for selecting, monitoring, and administering hydroponic nutrient solution mixtures that are tailored to crop varieties of the greenhouse. The crop varieties are preselected based on location characteristics of the greenhouse and analysis results of source water. The analysis results indicate a nutrient composition of the source water. A predefined nutrient formulation is then automatically combined with the source water by a nutrient dispensing subsystem, to achieve a desired nutrient solution mixture that is applied to a hydroponic bay. A computational system automatically monitors the state of a hydroponic environment and directs input modules as programmed, in order to increase plant growth, plant quality, and volume of plant yield.

The invention relates to the technical field of steam generators, in particular to a steam generator of an annealing furnace and a control method thereof. The steam generator of the annealing furnace comprises an electric heating device twisted with resistance wires, a built-in dry combustion liner, a PLC controller, a water supply device, a thermocouple, and a steam distributor communicated with an inner chamber of a steam oven. The steam generator of the annealing furnace can better utilize heat brought by wires, avoids the waste of water and electric energy caused by overflow, improves the stability of steam, simplifies structure, is easy to operate, and reduces manufacturing cost and maintenance cost.

The invention relates to a separation method of the diolefin in the petroleum cracking C5 fraction, which mainly solves the problems that the cracking C5 fraction in the past technology generates the dicyclopentadiene via the thermal dimerization reactor, the isoprene does self-polymerization and does copolymerization with the cyclopentadiene to cause great loss of the isoprene and the cyclopentadiene, at the same time the dicyclopentadiene has low product purity and low utilization value. The invention better solves the problem through the technical proposal that the isoprene in the C5 fraction is separated with the cyclopentadiene and the cyclopentadiene enters the thermal dimerization reactor to generate the dicyclopentadiene and separate with the m-pentadiene, which can be used in the industrial production of the diolefin separation in the cracking C5 fraction.

The invention provides a production method of a vanadium-nitrogen alloy. The method comprises the following steps of: a) reducing vanadium pentoxide to vanadium tetraoxide; b) adding carbon powder into vanadium tetraoxide and then carrying out dry powder extrusion on the resulting mixture for ball forming; and c) feeding the formed ball into a medium frequency vertical furnace, vacuumizing the furnace to be lower than 300Pa, and heating the ball inside the furnace to 1000 DEG C, introducing nitrogen into the furnace, preserving the positive pressure of 0.8-1.0MPa, increasing the temperature to 1200-1500 DEG C, and preserving heat for 3-5 hours; preserving the positive pressure of the nitrogen to 0.3-0.5MPa, increasing the temperature to 1500-1600 DEG C, and preserving heat for 1 hour; at last cooling the material to be lower than 200 DEG C and discharging the material, wherein the product is the vanadium-nitrogen alloy. The method conquers the defects that vanadium pentoxide is low in melting point, temperature control demand is strict, vanadium trioxide is unstable in normal state and is easily oxidized in the existing vanadium-nitrogen synthesis production process, and is relatively loose in temperature control demand, simple in equipment, good in product quality, stable in production process, and low in production cost.

The invention discloses a fiber grating demodulator calibration transfer member and a calibration method. The fiber grating demodulator calibration transfer member comprises a 2*2 coupler, an isolator, an F-P etalon, an annular device with three ports and a reflective load. One end of the coupler is connected with one end of the F-P etalon through the isolator. The other end of the F-P etalon is connected with one port of the annular device. The other two ports of the annular device are respectively connected with the reflective load and the other end of the coupler. The F-P etalon is adopted as a core device to make the calibration transfer member. A series of calibration wavelength points can be provided. The calibration data of a fiber grating demodulator can be more reliable. Meanwhile, the F-P etalon has relatively good temperature stability. The requirements for temperature control can be lowered. Good environment adaptability is achieved. Furthermore, by adopting the 2*2 coupler, the calibration transfer member is enabled to have two output ports. Calibration demands of single-channel and multi-channel fiber grating demodulators can be satisfied at the same time.

The invention discloses a temperature compensation system and method for lithium battery capacity measurement, and a storage medium. The temperature compensation system includes an offline training learning system, an online temperature compensation system and a sampling verification system. The method comprises the steps of: obtaining a characteristic curve of the capacity and the temperature ofa certain type of lithium ion battery through offline training; measuring and obtaining the real-time temperature and test capacity of the certain type of the lithium ion battery; using the real-timetemperature and the characteristic curve to compensate the test capacity to obtain the normal temperature compensation capacity of the certain type of the lithium ion battery; and performing samplingof certain type of the lithium ion battery. The storage medium stores computer programs executed by a processor to achieve the method provided by the invention. The temperature control requirements ofthe lithium ion battery for the factory area in the production process in the capacity grading process through temperature compensation can be reduced.

The invention provides a preparation method of a high-performance mesoporous silica-chitosan composite antibacterial filter. The preparation method comprises the following steps: (1) firstly, uniformly mixing a glacial acetic acid aqueous solution with chitosan to prepare a chitosan-acetic acid solution, then mixing and stirring the chitosan-acetic acid solution with 3-glycidyl ether trimethoxysilane overnight, adding mesoporous silica powder into the overnight solution, stirring and centrifuging, and then washing with ultrapure water to obtain a chitosan-mesoporous silica composite material;and (2) adding water into the chitosan-mesoporous silica composite material prepared in the step (1) to prepare a solution with the concentration of 100g / L, compounding the solution with a non-woven fabric, carrying out pre-drying and baking treatment on the composite sample, and carrying out ultraviolet curing to prepare the antibacterial filter. According to the prepared filter, the antibacterial rate reaches 90% or above, meanwhile, ultrafine particles in air can be effectively filtered out, and the effective haze prevention effect is achieved.

An object of the present invention is to provide oysters which are highly safe and not contaminated with microorganisms including viruses and bacteria, the oysters moreover being fresh and having high nutritional value, and being available throughout the year in the same state as oysters from the in-season period. Provided is a method for cultivating oysters on land, the method including growing oyster larvae into adult shellfish in seawater containing deep-sea water in a water tank through feeding microalgae cultured in seawater containing deep-sea water to the oyster larvae. Specifically, provided is a method for cultivating oysters on land, the method including growing oysters in a suspension system including seedling collectors suspended vertically or horizontally on ropes by allowing deep-sea water to continuously flow through the system without stagnation or repeatedly allowing deep-sea water to stagnate and continuously flow through the system without stagnation at a given interval at a seawater temperature of 10° C. to 30° C. for 5 months to 18 months.

The invention provides an alternating current testing device for a Seebeck coefficient. The alternating current testing device comprises a sample table, a chuck, a main heater, an auxiliary heater, amain probe, an auxiliary probe, a main temperature measuring element and an auxiliary temperature measuring element. The main heater, the main probe and the main temperature measuring element are mounted on the sample table; the auxiliary heater, the auxiliary probe and the auxiliary temperature measuring element are installed on the chuck, a temperature controller connected with the main heater and the main temperature measuring element, a lock-in amplifier connected with the auxiliary temperature measuring element, an alternating current power meter connected with the auxiliary heater are connected with a computer separately, and the sample table and the chuck clamp a sample to measure the Seebeck coefficient. The structure is simple. The invention further discloses an alternating current testing method of the Seebeck coefficient. the amplitude delta V of alternating current voltage and the amplitude delta T of temperature oscillation are measured in an input and output alternating current signal mode, the Seebeck coefficient is obtained through calculation according to the ratio of the amplitude delta V of the alternating current voltage and the amplitude delta T of the temperature oscillation, the temperature control requirement is low, the testing speed is high, and direct current signal interference is avoided.

The invention belongs to the technical field of biology, and discloses a primer and molecular beacon combination for quickly detecting human papillomaviruses (HPVs) based on an isothermal amplification technology, a kit and a detecting method. The primer and molecular beacon combination is shown as SEQ ID No.1-17, and can specifically recognize the 13 different types of high-risk HPVs and two types of medium-risk genotypes with the high incidence in Chinese population; and according to the kit and the method for real-timely detecting the HPVs through fluorescence based on the isothermal amplification technology, the 15 types of medium-and-high-risk HPVs can be detected within the short time (1.5 h), accuracy is good, sensitivity is high, repeatability is high, specificity is good, no nonspecific reaction with clinically similar pathogens exists, using is convenient, only an extracted template sample needs to be added into a reaction tube, the manual operation time is less than 5 min, the requirement of isothermal amplification for temperature control over an instrument is not high, and thus the primer and molecular beacon combination, the kit and the detecting method can be appliedto instant detection well.

The present invention provides a bump forming apparatus (101, 501) which can prevent charge appearance semiconductor substrates (201, 202) from pyroelectric breakdown and physical failures, a method carried out by the bump forming apparatus for removing charge of charge appearance semiconductor substrates, a charge removing unit for charge appearance semiconductor substrates, and a charge appearance semiconductor substrate. At least when the wafer is cooled after the bump bonding is connected on the wafer, electric charge accumulated on the wafer (202) because of the cooling is removed through direct contact with a post-forming bumps heating device (170), or the charge is removed by a decrease in temperature control so that charge can be removed in a noncontact state. Therefore, an amount of charge of the wafer can be reduced in comparison with the conventional art, so that the wafer is prevented from pyroelectric breakdown and damage such as a break or the like to the wafer itself.

The invention provides a bamboo board molding stamping machine computer control method. A first type of material starts to be added through the signals of a moisture detecting circuit, an ultrasonic distance measuring circuit and a color identification sensor. If the detected thickness is greater than or equal to the set value of 7 mm, a second type of material is added. If the detected thickness is less than the set value of 3 to 6mm, the second type of material and a third type of material are added according to 1:1. If the detected thickness is less than the set value of 1 to 2mm, the third type of material is added. If the detected thickness is less than the set value of 1mm, a product is directly acquired. A micro-controller carries out weighting summation on the signals of the sensor and detecting circuits, so as to determine the storage time of a stamped bamboo board. According to the invention, the use is convenient; the method can stop a stamping machine automatically, can automatically detect the thickness, color and moisture content of the stamped bamboo board, and can automatically judge the quality of the stamped bamboo board; repeated stamping during a reconstituted bamboo stamping molding process is reduced; the finished product yield is improved; and wasted bamboo slips are reduced.

The invention discloses a long-focal-length athermalization star sensor optical system, which comprises an aperture diaphragm, a front lens group, a middle lens group, a rear lens group and an image plane, wherein the front lens group comprises a first lens; the aperture diaphragm is located on the front surface of the first lens; the middle lens group comprises a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; the rear lens group comprises a seventh lens and an eighth lens; the first lens, the third lens, the sixth lens and the eighth lens are all made of dense flintglass; the second lens, the fourth lens and the fifth lens are all made of heavy crown glass; and the seventh lens is made of crown glass. The long-focal-length athermalization star sensor optical system adopts a conventional glass material to realize an aberration balance and design under different temperatures, solves the problem of reduction of thermal blooming image quality caused by the factthat the temperature of the long-focal-length optical system is easy to change, is high in imaging quality, meets use requirements of the space ambient temperature, and lowers the requirement for temperature control of the star sensor optical system.

The invention discloses a cooling-to-energy aerospace engine. An ignition or energy emission device is arranged in an energy chamber of the cooling-to-energy aerospace engine; small holes are distributed in the inner wall of the energy chamber and communicate with a working medium compression regulator and a working medium constant-temperature storage box through working medium guide pipes; the energy chamber is connected with an inner spray pipe and is provided with an inner nozzle; temperature detectors are arranged on the outer layers of the energy chamber and the inner spray pipe and communicate with a temperature controller through temperature signal wires; the energy chamber and the inner spray pipe are sleeved with a cooling cover; a cavity is formed between the energy chamber and the inner spray pipe to form a sleeve type outer spray pipe and an outer nozzle; small-hole spray pipes are distributed on the inner wall of the cooling cover; and one end of each small-hole spray pipeis connected with a water pressure regulator and a constant-temperature water tank through cooling water pipes. According to the engine, the cooling cover, the pipelines and other devices convert heat dissipation into propulsion energy, the temperature of the energy chamber and the temperature of the inner spray pipe are greatly increased, and the specific impulse is increased; the structure andthe control difficulty are reduced, repeated use is achieved, the size and the weight are reduced, the manufacturing, maintaining and using costs are low, and the engine is applicable to various spacetasks.

The invention discloses an athermalization star sensor optical system with stable focal length, and belongs to the technical field of optical systems. The invention solves a problem that an existing star sensor optical system does not consider the influence of the temperature on the sensitivity of the focal length while the athermalization design is realized. The focal power of each of a first lens, a second lens, a fourth lens and a fifth lens is positive; the focal power of each of a third lens and a sixth lens is negative; an aperture diaphragm is located between the third lens and the fourth lens; the first to sixth lenses and an image plane are sequentially arranged along an optical axis in a light incident direction; the first lens is made of SILICA; the second lens is made of D-LAF50; the third lens is made of H-ZF7LA; the fourth lens is made of D-ZPK1A; the fifth lens is made of H-ZLAF69; the sixth lens is made of H-ZF7LA; and a mechanical structure is made of titanium alloy. The positive and negative lenses of different materials and the material of the mechanical structure are matched with each other, so that the sensitivity of the focal length changing with temperature is reduced while the optical passive athermalization design of the optical system is realized.

The invention discloses a composite functional polycarboxylic acid water reducing agent mother liquor synthesized at normal temperature and a preparation method thereof, and belongs to the technical field of chemical industry. The composite functional polycarboxylic acid water reducing agent mother liquor comprises the following components in parts by weight: 30-36 parts of deionized purified water, 38-48 parts of polyether monomers, 9-10 parts of solution A, 6-7 parts of solution B, 6-8 parts of solution C and 0.8-1 part of sodium hypophosphite. In the whole production process of the polycarboxylic acid water reducing agent, the preparation process of the raw materials is respectively included, the requirement on the temperature control of the environment and the production raw materialsis small, and the production period is short. The polycarboxylic acid water reducing agent has excellent properties and is suitable for various sand and stone cements, and the application range is wide. The concrete prepared by the polycarboxylic acid water reducing agent has good workability and high strength. Compared with other water reducers such as the existing polycarboxylic acid water reducers and naphthalene series water reducers, the composite functional polycarboxylic acid water reducing agent mother liquor has obvious economic advantages.

The invention relates to the technical field of glass ball processing, in particular to a processing method for better controlling the spherical degree of irregular spherical glass, which solves the problem that large spherical special-shaped glass is not easy to form and reduces the control requirement on the internal temperature of a heating furnace. The method comprises (1) a step of manufacturing a mold, namely a step of cutting a hot-rolled steel plate with the thickness of 5 mm into battens, assembling and welding the battens, reinforcing a base with 5 cm * 10 cm channel steel, and welding the edges together through 8-10 mm cold-drawn steel rods or stainless steel rods; (2) a step of flatly laying high-temperature fiber cloth on the mold; (3) a step of laying flat glass on the high-temperature fiber cloth; (4) a step of heating and forming, namely a step of heating the mold in the step (1) and the plate glass in the step (3) to the softening temperature of the plate glass in the step (3) by using a heating furnace, and enabling the plate glass to be attached to the surface of a mold cavity of the mold to be shaped into a bent shape; and (5) a step of cooling and taking out a workpiece.