41results about How to "Save research funds" patented technology

The invention discloses a testing device of gunpowder combustion characteristics in vacuum, which mainly comprises a combustion chamber, a vacuum pump, an electric heater, a thermoelectric couple, a high speed camera and a data acquisition and processing system; wherein, the vacuum pump provides vacuum environment for the combustion chamber; by controlling the heating current and the heating time of the electric heater, different ignition isoperibols can be provided for tested gunpowder samples in the combustion chamber; and the data acquisition and processing system collects the test data generated by the thermoelectric couple and the gunpowder combustion images shot by the high speed camera when the tested gunpowder samples combust, and finally obtains the combustion characteristics of the tested gunpowder samples through corresponding processing and calculation. The invention not only can be used for testing the parameters such as combustion speed, combustion surface temperature and combustion heat and the like of the gunpowder in vacuum, but also can be used for the generation and collection of the combustion products of the gunpowder under different vacuum conditions. The invention has the overriding advantages of high integration level, obtaining various parameters by one testing and low testing expenses.

The invention relates to a diesel engine in-cylinder spraying and combustion visualization testing apparatus and testing method. The testing apparatus is mainly composed of a digital CCD camera, a computer image acquisition and processing system, a nitrogen cylinder, a pressure stabilizing barrel, a compressed air bottle, a pressure reducing valve, a light-emitting unit, an angle marking instrument, a frequency multiplier, a stroboscopic gun, a diesel engine test cylinder, an endoscope and a stroboscope. During testing, an optical system top head center corresponding to a mechanical top head center of a diesel engine is found out; initialization parameter setting is carried out; dynamic spraying image collection and in-cylinder combustion dynamic shooting are carried out; collected image processing is carried out by using system software of the computer image acquisition and processing system; and then the collected image is processed by using the system software of the computer image acquisition and processing system. According to the invention, with the visualization testing apparatus and testing method, the basis can be provided for the research of improvement of diesel engine air-intake organization, spraying and combustion chamber structure; the accuracy of the apparatus is high; and the operation is convenient.

The invention provides a reaction thermogravimetric analysis system for a synergistic heating process of electrical heating and microwave heating and relates to a reaction thermogravimetric analysis system. The system solves the problems in the prior art that the temperature field of each part within an entire region cannot be well reflected through the temperature measurement of either a thermocouple or an infrared thermometer and no reaction thermogravimetric equipment for realizing the synergistic heating process of electrical heating and microwave heating is available. According to the technical scheme of the invention, the outer wall of a reaction tank is provided with a microwave heating system. A furnace tube successively passes through the reaction tank and a furnace lining from top to bottom. At least two silicon carbide rods are arranged in a hearth and are positioned closer to the furnace tube. A sample bracket is arranged in the furnace tube in the penetrated manner. The top end of the sample bracket is provided with a sample crucible. The bottom end of the sample bracket is provided with an electronic balance. The bottom end of the furnace tube is communicated with an atmosphere adjustment system. One end of a filter vat is communicated with the top of the furnace tube. The other end of the filter vat is connected with a computer via a flue gas analyzer. The temperature measurement terminal of a thermocouple is placed in the hearth. The system is applied to reactions during the synergistic heating process of electrical heating and microwave heating.

The invention relates to a method for controlling the force when actively burnishing the disc. It comprises that: the computer transfers the data and control instruction to the single chip; the single chip control the drawing motor to rotate the ball lead screw and the nut pushes the lever to frap steel wire; the pull sensor measures the tension force of steel wire; the measured result is transferred to single chip; at the same time, the current signal of control motor is feedback to the single chip; the single chip processes PID calculation via power amplifier to be transferred to control motor to regulate rotation speed to adjust the pull of steel wire. Since said steel wire can continuously change the shape of active burnishing surface to keep the same with adhesive part of burnished optical mirror face. The invention also provides a relative device. Since it uses a pull ring-current ring control system while integrates the computer signal process, motor driving, and the process of pull sensor into one circuit to simplify the circuit structure, the invention has small volume, lighter load and quick dynamic response.

The invention discloses a wind-power-generation digital physical hybrid simulation system based on an RTDS and a method thereof. The simulation system can realize pure RTDS wind power generation system simulation and can realize digital physical hybrid RTDS wind power generation system simulation. The system is formed by a pure RTDS wind power generation simulation system and a digital physical hybrid RTDS wind power generation system. The pure RTDS wind power generation simulation system is realized in RTDS RSCAD software. A simulation controller, a main-circuit mathematical model of a wind power generation system and a simulation power grid model are included. The digital physical hybrid RTDS wind power generation simulation system is formed by the RTDS RSCAD software, an interface card and physical equipment. In the invention, through a variety of modes of simulation, the wind power generation system is integrally analyzed; and in a physical platform, performance of a control strategy is tested and debugged, and a control parameter and the control strategy can be corrected in real time so that an important practice basis is provided for a practical engineering design.

The invention discloses a device for simulating radiating capacity of an armored vehicle radiator in sand-dust environment. The device comprises a heating device and a radiator radiating capacity simulating device; a first cooling water inlet and a second cooling water outlet are formed on the heating device; the radiator radiating capacity simulating device comprises a radiator, an air flue, a feeder and a fan; the feeder, the radiator and the fan are orderly arranged in the air flue from top to bottom; a second cooling water inlet and a second cooling water outlet are respectively arranged at two sides of the radiator; the first cooling water outlet is communicated with the second cooling water inlet, and the second water cooling outlet is communicated with the first cooling water inlet.The radiating performance of the armored vehicle radiator in the sand-dust condition is researched by using the device for simulating radiating capacity of the armored vehicle radiator in the sand-dust environment, thereby providing a test condition for the design and optimization of the armored vehicle radiator, and enhancing the environment adaptability and battlefield survival ability of the armored vehicle.

This invention is a tissue embed-freeze apparatus for frozen tissue section used for life science experiment and medical pathological tissue examination, comprised of a multifunctional liquid nitrogen storage thermostatic bottle and an adjustable suspending water tank. The multifunctional liquid nitrogen storage thermostatic bottle is internally designed with a conical baffle for the adjustable suspending water tank to enter, used for freezing the embedded tissue and reducing volatilization of liquid nitrogen therein. The adjustable suspending water tank is disposed with two freely operable pull rods on two sides thereof, in order to adjust immerging depth and position of the water tank into the liquid nitrogen in the thermostatic bottle within 0 to 30cm according to actual need. With utilization, this invention can rapidly and conveniently carry out high quality freezing process can be carried out on embedded tissue and embryo as a special tissue embed-freeze apparatus, especially suitable for life science, pathology and anatomy, etc., which simultaneously bring new improvement for existing tissue embed-freeze module.

The invention discloses a bovine rotavirus, coronavirus, and viral diarrhea virus multi-connected RT-PCR detection method, which is characterized in that according to the detection method, RNA of a to-be-detected sample is taken as an RNA template, and a specificity upstream primer and a specificity downstream primer designed according to hereditary characteristics of the bovine rotavirus, coronavirus, and viral diarrhea virus are taken as a primer to perform RT-PCR proliferation to obtain a proliferation product. Then, electrophoresis detection is performed on the proliferation product with 1.5% agarose gel, and a result is recorded; according to the results of the electrophoresis detection, whether the to-be-detected sample contains the bovine rotavirus, coronavirus, and viral diarrhea virus is determined. The bovine rotavirus, coronavirus, and viral diarrhea virus detection method achieves has the beneficial effect of accurately, rapidly and efficiently distinguishing and diagnosingthe three viral disease with RT-PCR.

The invention relates to a stirring machine, and especially relates to an angle-adjustable stirring machine. The angle-adjustable stirring machine comprises a wheel hub and stirring blades. A shaft sleeve is arranged outside the wheel hub. A connection plate which can rotate by 360 DEG is connected on the shaft sleeve. The connection plate is connected to a blade seat through a hexagon socket bolt. The blade seat comprises bevel-angle blade seats and straight-angle blade seats. The bevel-angle blade seats are connected with bevel-angle blades through blade connection screws. The straight-angle blade seats are connected with straight-angle blades through blade connection screws. The bevel-angle blades and the straight-angle blades are distributed adjacently. According to the invention, a newly manufactured wheel hub is not needed. Simply the blades and the shaft sleeve of the wheel hub are adjusted, and a purpose for changing a stirring effect can be achieved, wherein an adjustment angle can reach 360 DEG. The stirring machine provided by the invention is especially suitable to be popularized in small experimental devices. With the machine, research funds are greatly reduced, experiment period is shortened, and working efficiency is improved.

The invention discloses a six-degree-of-freedom motion track data processing method of a drop test pre-embedded sensor. The method comprises building a reference system corresponding to object motion based on the ground, building a coordinate system corresponding to object motion based on a drop test pre-embedded sensor, collecting voltage data of monitoring points on the object in the coordinate system in object motion, transforming the voltage data into mechanical data, respectively transforming linear acceleration values of the object monitoring points on all axes of the coordinate system into linear acceleration components of the object monitoring points on all the axes of the reference system, calculating the sum of the linear acceleration components of the object monitoring points on all the axes in the reference system to obtain linear acceleration values of the object monitoring points on all the axes in the reference system, transforming the linear acceleration values into linear acceleration values of the object centroid on all the axes of the reference system, carrying out time integration to obtain centroid linear acceleration values and displacement components of the object centroid on all the axes of the reference system, and drawing a time-history function and a displacement function in object motion. The method has scientific universality and can be widely used in rockfall disaster research.

The invention discloses a cluster system of a heating dummy model. The cluster system comprises the heating dummy model and a power control system. The heating dummy model is composed of a head, a trunk, two arms and two legs. The surfaces of the heating dummy model are all wound with heating resistance wires, each arm is wound with four heating resistance wires which are connected in parallel, and other portions are provided with two heating resistance wires which are connected in parallel. The heating resistance wires cover the surface area of the heating dummy model by 97 percent to 97.5 percent, the total resistance of the heating resistance wires after the heating resistance wires are connected in series is 1600 omega to 1699 omega, and the heating amount is 75W. The power control system comprises a 380V power supply, a control panel, a drive board, a power amplifier board, a temperature-measuring sensor and a voltage regulator. The cluster system of the heating dummy model achieves automatic control, is convenient and fast to operate, stable in heating amount and capable of achieving simulation of different human bodies with different dummies working with different power, and has the advantage of being wide in range of application. Meanwhile, the heating dummy model can adjust the heating amount under the control of the voltage regulator.

The invention relates to the technical field of ocean observation high-end equipment, and in particular relates to a remote laying intelligent subsurface buoy dragged by an unmanned ship. The remote laying intelligent subsurface buoy comprises a main floating ball, a stainless steel support, a flow velocity profiler, an instrument chain, an acoustic releaser, an anchor chain, a satellite communication device, a controller and a ship-shaped balance weight, and the acoustic releaser is connected with the ship-shaped balance weight through the anchor chain; the unmanned ship drags the ship-shaped balance weight by using the release device; the controller is in electric signal connection with the satellite communication device, the release device and a water inlet device through a signal cable; the controller receives a laying instruction sent by a remote laying person through the satellite communication device, and controls the release device to disconnect traction of the unmanned ship to the ship-shaped balance weight and control the water inlet device to inject water into the ship-shaped balance weight according to the instruction so as to achieve remote laying. In the transportation process, the ship-shaped balance weight serves as a container for containing the subsurface buoy and serves as an anchor for fixing the subsurface buoy after being laid, the ship time cost is saved, the laying quality is improved, and the situation that safety accidents of equipment and personnel are possibly caused by ocean observation with life dangers under the high sea condition is avoided.

The invention discloses a multi-span simply-supported boundary condition test device, relates to a supporting test device and aims to solve problems that the support position of an existing beam and plate simple support boundary condition experiment device cannot be adjusted, and that beams (plates) with different sizes cannot be simply supported in the prior art. The device comprises a pluralityof bottom plates, a cross beam and a plurality of supporting assemblies, wherein the bottom plates are arranged side by side along a straight line, one supporting assembly is installed on each bottomplate, and a test beam is horizontally installed on the supporting assemblies. The invention belongs to the technical field of mechanical test devices. The device is advantaged in that simple supporting of beams (plates) with different widths and lengths can be achieved, cost is low, universality is high, and the scientific research expenditure of related experiments can be saved.

The invention discloses a rapid pipettor tip boxing device for a laboratory, which is characterized by comprising a tip positioning device, the outer side of the tip positioning device is connected with a baffle bottom bracket, and a baffle is arranged on the baffle bottom bracket; the gun head positioning device is composed of a plurality of sets of metal sheets, each set of metal sheets is composed of two rotatable metal sheets, the two metal sheets are connected through a middle shaft, the end of the middle shaft is connected with a support at the bottom of the baffle, and a plurality of grooves are distributed in each metal sheet; gun head holes corresponding to the gun heads are formed by the grooves of any two adjacent and different groups of metal sheets; a boxing control rod for controlling the opening and closing of the two adjacent and different groups of metal sheets is arranged on the bracket at the bottom of the baffle. By means of the rapid boxing device for the pipettorgun heads, the gun heads can be boxed at a time, operation is easy and convenient, the structure is exquisite, and therefore the experiment preparation time is saved, the scientific research expenditure is saved, and the experiment efficiency is improved.

The invention, which relates to the technical field of amplitude-phase controller manufacturing, discloses a program-controlled dual-channel amplitude-phase controller comprising a housing arranged on a three-axis simulation rotating table mechanism and an amplitude-phase controller assembly arranged in the housing. Comprising a first chip, a second chip, a microwave unit, a first power divider, a second power divider, an amplitude measurement and phase discrimination module, a third power divider, a fourth power divider and a single chip microcomputer, one side of a shell is provided with I/O interfaces, a main circuit board is arranged in the shell, and the other ends of the I/O interfaces are connected with the main circuit board; the microwave unit comprises a microwave circuit board arranged on the main circuit board, and a frequency conversion local oscillator, a switch filter bank, a total amplitude control attenuator, a first amplitude control attenuator, a second amplitude control attenuator, a first numerical control shifter and a second numerical control shifter which are arranged on the microwave circuit board. The invention discloses a program-controlled dual-channel amplitude-phase controller which has the advantages of low price, high test efficiency and high precision.