34results about How to "Data deviation is small" patented technology

The invention discloses a greenhouse environment monitoring system with remote calibration and redundant network and a monitoring method thereof. The greenhouse environment monitoring system includes: a terminal node, and the terminal node includes a sensor sequence, a first processor, An actuator and a first wireless communication link; a coordinator, the coordinator including a second wireless communication link and a second processor; a display terminal, the display terminal is used to display the output information of the second processor; a communication terminal , the communication terminal carries monitoring data information in the form of short messages; the present invention is used to realize the self-monitoring and self-control of greenhouse environmental elements, and at the same time, it solves the problem of weak network stability of the existing greenhouse monitoring system and the reliability of sensor detection data Not a high question.

The invention discloses a method for predicting wellbore temperature by region and segment based on cementing big data. , and then the data is mined, and the subsection multivariate regression geothermal gradient is used to establish the temperature prediction of each opening one by one using the progressive method. By adopting the invention, the prediction accuracy of the borehole temperature can be improved, and the engineering and safety accidents caused by the excessive prediction error of the borehole temperature can be avoided.

The invention discloses an automatic real-time tracking method for a construction progress of a house building. The method comprises the steps that tracking points are arranged on a tower crane; height readings of different angle tracking points and a target building (a target) are obtained by rotating the tower crane, stored, screened, averaged and sent to scale units; data of the scale units is calculated; the height (target height) from the target to the tower crane is stored; angle scale values are read; target height values are screened and averaged when the stored data size reaches a preset value or the setting time is elapsed from storing the first data; the average target height value, the angle scale values, horizontal positions of the tracking points, and the like are transmitted to a server; the server screens and averages the all-day target height of each scale unit; and the average all-day target height, the angle scale values and data quality information are stored in a database. The screening is reliability screening; a corresponding system mainly comprises a range sensor, an angle measurement element, a processor, an AD (Analog to Digital) converter, a wireless communication module and the server; the range sensor is connected with the processor by the AD converter; and the angle measurement element outputs a signal to the processor.

The invention discloses a ground control test safety valve, which comprises an upper joint, a duck neck outer cylinder, a spring outer cylinder, a piston mandrel, a spring, a one-way valve, a ball valve outer cylinder, a ball valve assembly, a lower limit ball seat and a lower joint , the upper joint, duck neck outer cylinder, spring outer cylinder, ball valve outer cylinder and lower joint are sequentially fixedly connected to form a hollow shell, and the piston mandrel, spring, one-way valve, ball valve assembly and lower limit ball seat are arranged in sequence In the shell formed by the upper joint, the duck neck outer cylinder, the spring outer cylinder, the ball valve outer cylinder and the lower joint, the inner wall of the duck neck outer cylinder is provided with a control pipeline, a balance pipeline and a chemical injection channel, and the control pipeline maintains pressure to make the The ball valve assembly is always in the open state, and the pressure formed by filling the balance pipeline with nitrogen gas cooperates with the spring and the one-way valve to drive the ball valve assembly to close to cut the coiled tubing, and inject chemical agents to the bottom of the well through the chemical injection channel. The invention can cut test cables and coiled tubing by means of nitrogen filling pressure or balanced pipeline pressure.

The invention relates to a touch panel and a method for determining the ground wire position inside the touch panel. The touch panel comprises a substrate, a drive layer and a sensing layer are sequentially arranged on one side of the substrate, the drive layer comprises a first grounding wire, a second grounding wire and multiple drive electrodes, the sensing layer comprises multiple sensing electrodes, a first capacitor area, a middle capacitor area and a second capacitor area are included between the sensing layer and the drive layer, and the capacitance error between the first capacitor area and the middle capacitor area and the capacitance error between the second capacitor area and the middle capacitor area are both smaller than 2%. According to the touch panel and the method for determining the ground wire position inside the touch panel, the data deviation of the edge point and middle part of a sensor is decreased by means of precise arrangement of a ground wire, and therefore the whole quality of a product is improved.

The invention discloses a sample preparation method and a compaction device for immature soil base materials. The method comprises the steps that the interior of a mold is coated with a lubricating oil layer, the immature soil base materials are put into the mold layer by layer, the immature soil base material layers in the mold are compacted through a jack every time one layer of immature soil base material is laid, and therefore a sample to be detected is obtained; the compaction speed of the jack is 0.5 mm / s, the compaction pressure of the jack is 18-19 K / N, and the compaction time of the jack is 3-5 min; the compaction device comprises a test bed, the test bed is sequentially provided with a first platform and a second platform in parallel in the horizontal direction from top to bottom, the second platform is coaxially provided with the jack, a gasket, the mold and a pressing column in sequence from bottom to top in the vertical direction, and the top end of the pressing column abuts against the first platform. Compared with a traditional hammer test, a press compaction test and a jack compaction test, the compressive strength of a test piece compacted by the jack is more stable than the compressive strength of a test piece compacted by the other two test methods, test piece overall deformation is good, and the test piece has good ductility when compacted.