6results about How to "Reduce sampling costs" patented technology

The present application relates to a kind of for collecting dead pig inguinal lymph node tissue sampling device, including at least one first distraction unit, first gripping unit, at least one second distraction unit, second gripping unit, first locking unit, operating unit, sampling unit and at least one second locking unit, its advantages are, using first distraction unit, second distraction unit cooperate first gripping unit, second gripping unit, the hind leg of dead pig is opened sufficiently to expose the position of groin, provide stable clear puncture field for lymph node sampling;Sampling unit is rotated in lymph node tissue inside by operating unit, the purity of sample collected is high, and larger volume tissue sample can be collected without multiple puncture;Operating unit is movably connected with second gripping unit, can be supported by the second gripping unit, need not to tightly hold operating unit, only pressurization can be completed puncture, save puncture strength;And only need to replace sampling unit, one person can easily complete sampling to dead pig.

The invention provides a material taking device and method for drying equipment, and the material taking device comprises a conveying mechanism which is arranged along the axis of a drying roller, and the two sides of the conveying mechanism are respectively provided with a material receiving position located at the center of the inner side of the roller and a material discharging position located at the outer side of the roller; a material guide channel communicated with the nearby area of the inner wall of the roller and the material receiving position is formed in the material guide pipe; the sampling box is configured to move between a material receiving position and a discharging position in the length direction of the conveying mechanism, and when the sampling box is located at the material receiving position, an inlet of the sampling box is in butt joint with an outlet of the material guide pipe. According to the material taking device of the drying equipment, the sampling box can move to the center of the rear top end of the roller for sampling, the sampling box freely enters and exits from the roller, and the sampling box withdraws from the roller after completing material receiving, so that the problem of special requirements on the structure, power supply and space of the sampling device due to rotation of the roller is solved; the sampling action can be completed without other power assistance, so that the energy-saving and environment-friendly effects are achieved.

The utility model provides a water quality sampling bottle self-replacing device, which relates to the technical field of water quality sampling and comprises an unmanned aerial vehicle, a sampling device main body fixed at the bottom of the unmanned aerial vehicle, a sampling bottle body arranged on the inner wall of the sampling device main body, a sampling pump fixed on the surface of the sampling device main body, and a water sampling pipe fixed at one end of the sampling pump, one end of the water inlet pipe is provided with an electromagnetic valve body, the inner wall of the sampling device main body is rotatably connected with a bottom rotating disc, the bottom rotating disc is driven by a driving motor, and the top of the bottom rotating disc is provided with a plurality of sampling bottle bodies. According to the utility model, the plurality of sampling bottle bodies connected with the water inlet pipe through the electromagnetic valve bodies are arranged in the sampling device main body, and the positions of the sampling bottle bodies in the sampling device main body can be changed through rotation of the bottom rotating disc, so that the unmanned aerial vehicle can carry out sampling for multiple times during single flight, continuous water quality sampling is realized, and the sampling efficiency is improved. The sampling cost is reduced, and the sampling application range of the unmanned aerial vehicle is widened.

The present application belongs to the field of sewage treatment, and provides a chemical industry park groundwater pollution tracing method based on geophysical exploration cooperation, which uses geophysical methods to detect target areas in the chemical industry park, and obtains underground electrical parameter data; based on the spatial form characteristics and physical parameter gradient change law of the resistivity anomaly area, a layout scheme of groundwater chemical sampling target points is determined; groundwater samples are collected according to the layout scheme, and chemical detection analysis is performed; the pollutant data obtained by the chemical detection analysis is subjected to spatial position corresponding and correlation analysis with the resistivity three-dimensional model; the pollutant concentration spatial distribution map, the park enterprise layout and the regional hydrogeological conditions are comprehensively considered to identify the pollutant migration path, lock the pollution source and output the pollution tracing result. The method improves the accuracy of pollution tracing.

This disclosure provides an adaptive interpolation method and electronic device for carbon emission power density at the city block level, relating to the field of data processing technology. The implementation scheme is as follows: Based on the differences in the gradient vectors of building development volume at various sampling points of a first urban plot, the location of a first interpolation sampling point in the sampling network of the first urban plot is determined, where the building development volume of the sampling point is the ratio of the building area to the base area of ​​the sampling point; based on the carbon emission power density of multiple first neighboring sampling points and the slope of the change in carbon emission power density of the multiple first neighboring sampling points, the carbon emission power density of the first interpolation sampling point is determined; based on the location and carbon emission power density of the first interpolation sampling point, interpolation is performed on the sampling network of the first urban plot. Using the scheme of this disclosure, the accuracy of carbon emission data interpolation can be improved, and the sampling cost of carbon emission data can be reduced.

The application discloses a kind of based on sparse time delay's metasurface array signal frequency and direction of arrival estimation method, mainly solve the problem of high cost and low precision in the condition of ultra-wideband signal, frequency and direction of arrival angle simultaneous estimation.It is as follows: the implementation scheme is: constructing metasurface array, and the received signal is space-time coded;The coded signal is time-delayed to meet the nested sequence, and the time delay is increased by Q times of nested time delay, and the output signal of a total of QN times of time delay is obtained after sampling;Frequency solving matrix is obtained according to the output signal, and the eigenvalue is obtained by decomposition, to calculate the frequency of received signal;Direction vector matrix is constructed according to the coded signal, angle solving matrix is obtained using frequency and direction vector matrix, and the eigenvalue is solved by eigenvalue decomposition, to calculate signal direction of arrival angle.The application increases the time delay of undersampling model, improves the precision of simultaneous estimation of signal frequency and direction of arrival angle, and can be used for ultra-wideband signal reconnaissance processing.