31results about How to "The data is accurate and stable" patented technology

The present invention discloses a roughness detecting method for the combined surface of a concrete prefabricated part. The method comprises the following steps of 1) cleaning sundries on the surfaceof a to-be-measured part before the test, selecting a suitable area, painting a layer of demoulding oil on the selected area, and fixing a stainless steel square frame on the area; 2) filling the stainless steel square frame by adopting the plasticine to enabling the parallel and level state of the surface of the stainless steel square frame; 3) removing the stainless steel square frame, and taking down the plasticine attached on the surface of the part; 4) kneading the plasticine into a whole block, weighing the plasticine in the air as m1 and accurate to 0.01 g, placing the plasticine in a mesh basket, placing the plasticine in the distilled water together with the mesh basket, weighing the plasticine in the water as m2 and accurate to 0.01 g, and calculating the roughness of the plasticine. According to the roughness detecting method for the combined surface of the concrete prefabricated part, the roughness of the concrete prefabricated part, in the horizontal, vertical and inclineddirections, can be tested.

The invention relates to material test equipment and test method, in particular to in-massif large scale pressure test equipment used for large scale material test and a test method thereof. The test equipment comprises a pressure machine set, a test device and a base as well as a cave; wherein the cave is arranged in a massif, the pressure machine set, the test device and the base are arranged in the cave, testing material is arranged on the base, and the pressure machine set also comprises at least one pressure machine arranged at the top part of the cave. The in-massif large scale pressuretest method includes that a place is selected, large scale test equipment is mounted, testing material is conveyed, the testing material is fixed, a pressure device is utilized to test the testing material, and relevant data is recorded. The invention utilizes natural high quality massif to substitute the structural framing of large scale equipment and has the advantages that rigidity is high, fatigue is difficult, cost is low, and the obtained pressure is accurate and stable.

The present invention provides an installation protection device for a sensor and a vibration detection device for an air conditioner, wherein the installation protection device includes an insulating mounting frame, and the insulating mounting frame includes a mounting plate for installing the sensor and a mounting plate for suspending the end of the sensor to a waiting area. The support part at the installation place, the support part is connected with the installation board and protrudes from one side of the installation board. The installation protection device provided by the present invention is used to set the sensor on the object to be tested, and the sensor and the installation surface are insulated, so that the static electricity generated by the tested object will not be transmitted to the sensor, and the test accuracy of the sensor will not be affected. Therefore, the installation protection device of the present invention can ensure the testing accuracy of the sensor, so that the data measured by the sensor is stable and accurate. In addition, the mounting plate also has a heat insulation effect, and the support part has a heat dissipation effect, so the installation protection device of the present invention can also prevent the high temperature of the object to be tested from being transmitted to the sensor, and avoid damage to the sensor due to excessive temperature.

The present application discloses a mobile imaging device based on a capacitance tomography sensor, including: a capacitance tomography sensor, a moving fixture and an auxiliary fixture, and the moving fixture and the auxiliary fixture hold the sample to be tested or the capacitance tomography sensor respectively; The moving fixture performs measurement movement relative to the auxiliary fixture; the electric capacitance tomography sensor is used to measure the section to be measured of the sample to be tested, and obtain a two-dimensional image of each section of the sample to be tested. When the moving speed of the sample to be measured is fast, it is necessary to increase the number of measured sections and reduce the measurement interval. Using this device for imaging measurement can effectively improve the quality of the three-dimensional reconstruction image and greatly increase the movement of the sample that can be measured by the 3D ECT sensor. speed range.

The invention discloses a tobacco leaf quality similarity measurement method, which measures the quality similarity of the tobacco leaves to be evaluated and other different types of raw tobacco leaves by constructing a single-parameter similarity measurement function and a multi-parameter weight coefficient function. This method is based on the average value of quality data of tobacco leaves of the same origin and grade, which effectively improves the efficiency of tobacco leaf quality similarity measurement, and provides reliable data support for subsequent cigarette formula maintenance, single tobacco replacement or new formula development.

The invention provides a detection system for specific ions, comprising: a central processing module, configured to send detection instructions for the specific ions; a sensing module, configured to receive the detection instructions, and generate The detection current signal formed by the specific ion in the solution to be detected; wherein, the sensing module analyzes the detection current signal to detect the concentration information of the specific ion in the solution to be detected; or the central processing module receives the sensor The detection current signal generated by the module is analyzed to detect the concentration information of the specific ion in the solution to be detected. The specific ion detection system of the present invention uses an electrochemical method combined with a solid electrode to directly measure the concentration of each specific ion in a liquid substance, the data is accurate and stable, the measurement range is large, and the measurement accuracy is high.

The invention discloses a heat transmission bridge type sensor for measuring erosion and deposition depth on the periphery of a bridge steel pipe pile. The heat transmission bridge type sensor for measuring the erosion and deposition depth on the periphery of the bridge steel pipe pile is based on the principle that a heat source and temperature sensing points are located at the two ends of a heat transmission bridge respectively, the heat emitted by the heat source is transmitted to the temperature sensing points through the heat transmission bridge, and when the heat transmission bridge is located in a water body, the heat loss is in positive correlation with the water velocity and is larger than that in a soil body obviously. The heat transmission bridge type sensor for measuring the erosion and deposition depth on the periphery of the bridge steel pipe pile comprises a shell body, a heat emitting block, temperature probes and other components. The heat emitting block is arranged in the center of the side wall of the inner side of the shell body, and the temperature probes are arranged on the middle points of the four edges of the shell body respectively. The heat emitting block is served as the heat source, and the shell body is served as the heat transmission bridge and transmits heat to the temperature sensors (the temperature sensing points). Rated currents are input to enable the heating block to emit heat continuously, and whether the environment where the sensor located is the water body or the soil body can be distinguished simply by measuring the temperature changing speed and the temperature changing range of the temperature probes in the heating process. A plurality of sensors are arranged at the positions of different depths on the pile body of the steel pipe pile, the boundary surface of the water body and the soil body can be distinguished, and the erosion and deposition depth on the periphery of the bridge steel pipe pile can be determined finally.