9results about How to "Guaranteed experimental accuracy" patented technology

The invention discloses a wearable small animal electrical stimulation device, and belongs to the technical field of medical instruments, the purpose of connection is achieved by plugging a wiring terminal into an electric plugging seat, a pressing ring extrudes a piston cylinder after being pressed, gas is guided into a gas cushion ring through a gas pipe, and the gas cushion ring is connected with the wiring terminal. The air cushion ring expands and drives a plurality of sealing rings to be embedded into a sealing groove outside the power connection socket, the purpose of sealing connection between the fixing sleeve and the power connection socket is achieved, the situation that water seepage and dust accumulation are caused by a gap between the fixing sleeve and the power connection socket is prevented, and the end of a clamping strip in the locking assembly can retract into a sliding way after being pressed, so that the sealing effect is improved. When the clamping strip moves to the clamping groove, the clamping strip can be clamped into the clamping groove through elastic support of the second spring, so that the purpose of locking the position of the electric socket is achieved, and the situation that the electric socket and the wiring terminal are loosened due to the fact that a small animal is subjected to stress reaction when being electrically stimulated and a wire is pulled is prevented; and the use stability and the experiment precision of the electrical stimulation device are ensured.

The invention relates to the technical field of battery thermal performance measurement, in particular to a method for measuring the specific heat capacity of an energy storage battery. The theoretical model is calibrated by monitoring the cooling curve of the battery so as to ensure that the heat transfer characteristic of the battery is accurately reflected. Then, constant-power heating is adopted, so that the thermal field of the battery reaches a quasi-steady state, and in the steady state, the temperature change is gradually consistent; and recording a temperature change curve in real time through a temperature acquisition instrument, and calculating the specific heat capacity of the battery in combination with the calibrated model and a constant power input condition. According to the method, only the voltage-stabilized power supply and the temperature acquisition instrument are needed, so that the cost is greatly reduced; the measurement precision is improved through temperature change curve analysis after model calibration, and the problems that in a traditional method, environmental interference is large, and precision is insufficient are solved; the time for reaching the quasi-steady state is shortened through constant-power heating, and the measurement process is accelerated. The method is suitable for various energy storage batteries, can meet the requirements of industries such as electric automobiles and electric energy storage on the thermal performance of the batteries, and has wide popularization value.

The invention discloses a simple and efficient polar molecule adsorption measurement device which comprises a gas supply unit, a switch needle valve, a vacuum gauge, a vacuum tank, a heating system, a vacuum pump, a high-precision balance and a data acquisition and processing unit, one end of the switch needle valve is connected to the gas supply unit through a valve gas pipe, the other end of the switch needle valve is connected with the vacuum tank, the vacuum gauge and the vacuum pump are connected with the vacuum tank through pipelines, and the high-precision balance located in the vacuum tank is connected with the data acquisition and processing unit through an adapter flange; the gas supply unit is used for providing polar water molecules and other mixed gases; the heating system is used for heating the vacuum tank; the high-precision balance is used for measuring the adsorption weight of polar molecules; the data collecting and processing unit is used for collecting and processing data in the experiment process. The invention further discloses a simple and efficient polar molecule adsorption measurement method. According to the invention, the device cost can be reduced on the basis of ensuring the experiment precision and reliability.

The utility model relates to a colon cancer metastasis microfluidic dynamic simulation device suitable for experiment teaching, which comprises microfluidic driving equipment, a dynamic simulation module and a teaching imaging system, the dynamic simulation module comprises an invasion layer, an intestinal tract simulation layer and a blood vessel metastasis layer from top to bottom, the invasion layer is used for placing freeze-drying dyeing marked colon cancer cells, and the intestinal tract simulation layer is used for placing the blood vessel metastasis layer. The bottom of the invasion layer is composed of a capillary simulation plate for simulating capillaries, the bottom of the intestinal tract simulation layer is composed of a common blood vessel simulation plate for simulating common blood vessels, and the microfluidic driving device is connected with the input end in the blood vessel transfer layer and simulates blood flow. The teaching imaging system comprises an excitation light source for exciting the dyeing marks, a long working distance objective lens for observing the dynamic simulation module and a microscopic camera for shooting the dynamic simulation module. By adopting the scheme, the utility model provides the colon cancer metastasis micro-fluidic dynamic simulation device suitable for experiment teaching, which can observe the metastasis process in real time, has low operation complexity and is suitable for experiment teaching, so that the teaching effect is improved.

The invention relates to the technical field of intelligent pedestal pan deodorization function detection, in particular to a sampling device for intelligent pedestal pan deodorization function detection. Comprising a mounting frame, a rotating frame is mounted on the mounting frame, a plurality of collecting barrels are mounted on the rotating frame, a fixing column is fixedly connected to the mounting frame, a transmission device is mounted on the fixing column, a fixing block is fixedly connected to the transmission device, and a fixing frame is fixedly connected to the fixing block; the fixing shell is fixedly connected to the fixing frame, the upper side of the fixing shell is fixedly connected with a gas storage cover through a supporting rod, and vent holes distributed at intervals are formed in the upper side of the gas storage cover; and the air guide piece is communicated with and arranged on the fixed shell. Bubbles entering the collecting cylinder are separated into small bubbles through the vent holes in the gas storage cover, the contact probability of hydrogen sulfide in the bubbles and absorption liquid is increased, then the efficiency of collecting gas in the hydrogen sulfide is improved, and the experimental precision of deodorization function detection of the intelligent pedestal pan is guaranteed.

The utility model discloses a kind of fiber drawing experimental device based on press, including push assembly, fixed component and test piece;The fixed component is composed of support cylinder, fixed cylinder and support disc;The support cylinder is equipped with groove and fixed cylinder and is assembled;The fixed cylinder below is equipped with connecting protrusion and support cylinder and is assembled, inner wall is equipped with support groove and lifts support disc;The support disc is equipped with guide rail groove, test piece groove and fiber hole 1;The push assembly is composed of pressure disc, guide rail column, fixed disc, fixed ball and nut;The lower end of guide rail column is equipped with bolt;The fixed disc is equipped with bolt hole and fiber hole 2;The fixed ball is equipped with fiber hole 3;The test piece is composed of fiber and matrix;The fiber passes through fiber hole 1, fiber hole 2 and fiber hole 3, knot is fixed;The utility model discloses a kind of device capable of measuring the bonding relationship between fiber and matrix by press, solve the pain point that cannot be tested due to tensile test equipment shortage, have certain application prospect.

The invention discloses a cement concrete permeability coefficient tester, comprising a frame, a water permeability coefficient test device and an air permeability coefficient test device arranged on the frame; the water permeability coefficient test device comprises a water permeability sample cylinder, an overflow water tank and a water collecting measuring cylinder, and the air permeability coefficient test device comprises a vacuum pump, an air compressor, a pressure chamber, an organic glass cylinder, a glass tube and a full-scale recorder installed on the frame. The tester can integrate the water permeability coefficient and the air permeability coefficient of cement concrete samples through the arrangement of the water permeability coefficient test device and the air permeability coefficient test device, and has various functions and is convenient to use; at the same time, through the air bag membrane and the saturation treatment of the sample before the experiment, air leakage is effectively avoided and the experimental accuracy is guaranteed, and the tester has the characteristics of simple structure, convenient use and high accuracy of experimental results.

The application discloses an automatic pipetting workstation, and belongs to the technical field of pipetting equipment. The automatic pipetting workstation comprises a plurality of single pipetting modules arranged side by side, wherein the single pipetting module comprises a suction head module, a raw material platform, a linear conveying module, a suction head collecting module, a moving and positioning module and a pipetting module; and the pipetting module comprises a nozzle. The pipetting workstation is a high-throughput liquid preparation modular assembly line. The assembly line is modular in design. Each module has a plurality of liquid adding stations. The pipetting workstation is equipped with an equal number of pipetting modules. The pipetting workstation can add a plurality of different solutions. The centrifuge tubes are intermittently advanced by the linear conveying module and are advanced to the next working module one by one until all kinds of solutions are added. Compared with the traditional pipetting workstation, the pipetting workstation adopts a "modular + assembly line" form and can work simultaneously. The problem of low efficiency caused by repeated movement of the traditional pipetting workstation is solved.