36results about How to "Flexible sampling" patented technology

The invention relates to a data acquisition card capable of automatically adjusting a sampling rate and belongs to the data acquisition technology field. The data acquisition card comprises a signal acquisition module, a signal conditioning module, a first filtering shaping module, a single-chip micro computer and a USB interface chip, wherein the first filtering shaping unit comprises a first waveform shaping module and a first low pass filtering module, and the single-chip microcomputer comprises a single-chip microcomputer core, a first timer, a second timer, a third timer, a first ADC module, a first DMA module, a second DMA module, a memory and an FSMC interface module. The data acquisition card is advantaged in that the sampling rate can be automatically adjusted according to frequency of acquired simulation input signals, flexible sampling of the acquired simulation input signals is realized, redundancy data can be effectively removed, the acquisition data bulk is reduced, and the data acquisition time and data storage cost of the data acquisition card can be saved to a maximum degree.

The invention discloses a memory interface method based on a CLB (Central Logic Bus) bus, comprising the following steps of, at a rising edge of a bus clock, sending a reading or writing operation request by a processor, latching address signals and control signals from the processor by the bus to obtain first latching signals, and generating enabling signals of a memory; at a falling edge arranged behind and adjacent to the rising edge of the bus clock, generating a memory clock according to the enabling signals of the memory by the memory, wherein a falling edge of the memory clock is synchronous with the falling edge of the bus clock; behind the falling edge of the memory clock, in the reading operation, outputting data to achieve the data output end of the memory, delaying by a line, and achieving the data input end of the processor in the front of an adjacent rising edge behind the rising edge of the bus clock; in the writing operation, writing data to achieve the data output end of the processor, delaying by the line, and achieving the data input end of the memory in the front of the adjacent rising edge behind the rising edge of the bus clock. When realizing high-speed reading or writing operation of the memory, the invention efficiently reduces the amount of waiting period and enhances the clock utilization.

The invention relates to a sampling device capable of determining water depth and water quality, which belongs to the technical field of water quality monitoring and environmental protection. According to the invention, a bright-colored scale mark or bright-colored foamed material is provided between the bottom and the central part of the external side of a bucket which has an opening at its upper part and has a handle; a small concentric circular aperture is perforated at the center of circle at the bottom of the bucket, a small cylinder with a height smaller than the height of the bucket is provided at a position where the small concentric circular aperture is located by seal welding or sticking for seal connection with the bucket, and the top of the small cylinder is sealed; a set of symmetrical small circular apertures are arranged at the bottom of the small cylinder; two freely movable flakelets are arranged at the position where the small circular apertures of the small cylinder are located; five hollow slender rods with a cavity at their center are vertically arranged to be parallel to the inner side of the bucket, and the five hollow slender rods and the small cylinder are all provided with a concave rectangular guide groove, which enables all the hollow slender rods to move along a straight line. Integral structure for the sampling device is simple; a principle used in the device is reliable; sampling steps are simple and easy; controllable water quality and water depth are achieved; and the sampling device is applicable to water quality sampling of water at a variety of water depths.

The invention discloses an automatic sampling system which comprises a host system and an auxiliary system, wherein the host system comprises a main control module, a speed reducing stepping motor, a stepping driver and a discharging servo motor; the stepping driver is connected with the speed reducing stepping motor; the auxiliary system comprises a box and a sealed servo motor; the sealed servo motor is arranged on the box; a main shaft rotating arm is arranged on the speed reducing stepping motor; a sampling head is fixedly arranged on the end part of the main shaft rotating arm; the discharging servo motor is arranged at the end part of the main shaft rotating arm; a rotating piece is fixedly arranged on a rotating shaft of the discharging servo motor and can be used for blocking the bottom of the sampling head during the sampling; a material guide pipe is arranged in the box of the auxiliary system; an inner film bag is fixedly arranged at an upper end port of the material guide pipe; a sealing cover is fixedly arranged on a rotating shaft of the sealed servo motor and is used for covering the upper end port of the material guide pipe. The automatic sampling system is suitable for sampling matters such as powder and particles, and also suitable for sampling objects with end parts during the transport in the industries of a chemical fertilizer, grains, food and medicines.

The invention provides an agitating vessel applied to a diazo-reaction. The agitating vessel applied to the diazo-reaction comprises a vessel body, a vessel cover, an agitator, a motor, a temperature detector and a PH value detector; a discharge port is formed in the bottom of the vessel body, and a jacket is arranged at the outer part of the vessel body; a feed port, a pressing pump sampling device, a display and an air outlet are sequentially arranged on the vessel cover from left to right; the agitator extends into the vessel body, and the upper end of the agitator is connected with the motor, the agitator comprises a stirring rod, an upper-layer blade and a lower-layer blade; the temperature detector is arranged on an agitating rod between the upper-layer blade and the lower-layer blade of the agitator; the PH value detector is arranged under the temperature detector; the temperature detector and the PH value detector are separately arranged on the agitating rod between the upper-layer blade and the lower-layer blade of the agitator, and the detecting result is more accurate; due to the arrangement of the pressing pump sampling device, the sampling is more flexible and is quantitatively controllable; and the agitating vessel is simple in structure, convenient in operation, reasonable in design and high in degree of automation, and has a wide application prospect.

The invention relates to the technical field of research on marine life equipment, in particular to a visual multi-connected sampling system of plankton and a use method thereof. The visual multi-connected sampling system of plankton comprises sample collectors, mesh bags, a framework, springs, a brake, a driving separation mechanism and a plurality of moving rods, wherein the moving rods are arranged in the framework, the inlet ends of the mesh bags are arranged at different moving rods respectively and are opened or closed through rotating of the moving rods, the brake is arranged on the upper side of the framework, one end of each moving rod extends to the outside of the framework, the upper side of the end is connected with the brake before sampling is started, and the lower side of the end is connected with the bottom surface of the framework through one spring; after sampling is started, respective moving rods are separated from the brake in sequence by the action of the driving separation mechanism and the springs, the inlet ends of the mesh bags are opened when the moving rods are separated from the brake, and the sample collectors are arranged at the bottoms of the mesh bags. The visual multi-connected sampling system of the plankton achieves horizontal and vertical sampling in continuous water layers and improves the collection frequency of the plankton.

The invention discloses a tail gas sampling device and method for a chlorination volatilization system. The tail gas sampling device comprises a cooling device, a condensate collecting device, a residual gas absorbing device, a flow meter and a vacuum pump which are connected in sequence. The tail gas sampling method for the chlorination volatilization system comprises the steps of mounting the sampling device; positioning and sampling on site by the sampling device; treating and analyzing the sample; and performing data processing. The device fills up the blank in the aspect of sampling analysis of flue gas of a chlorination volatilization system, has a good coagulation capture effect on gold-containing aerosol with the size of 0.001-100[mu]m, improves the sampling accuracy and sampling efficiency, is high in adaptability, achieves flexible sampling according to production requirements, facilitates on-site process investigation, provides data support for on-site transformation, and effectively overcomes the defect that tailings are difficult to sample and measure.

The invention discloses continuous detection equipment based on industrial flue gas. The equipment comprises a mounting frame fixedly mounted on a platform at the top of a reaction tower, wherein a control box and a detection unit which are fixedly mounted at the top of the mounting frame through connecting pieces, and an adjustable sampling mechanism fixedly mounted at the top of the reaction tower through a mounting assembly, and a continuous gas distribution mechanism is arranged in the control box. The invention relates to the technical field of flue gas treatment environmental protection equipment. According to the continuous detection equipment based on the industrial flue gas, the flue gas can be flexibly sampled, so the detection equipment can randomly extract the flue gas at different positions for detection, and the detection position can be well adjusted according to reagent detection requirements; therefore, detection personnel can more accurately detect the sulfide content and the dust particle concentration in the flue gas, sampling is flexible, and detection precision is greatly improved.

The invention belongs to the technical field of traditional Chinese medicine analysis, and mainly relates to an immunoassay special instrument, in particular to a full-automatic high-flux dry-type immunoassay analyzer and an analysis method thereof. The full-automatic high-flux dry-type immunoassay analyzer comprises a case, a discharging mechanism and a sampling mechanism are arranged on the two sides of the interior of the case respectively, meanwhile a pushing assembly is arranged at the top of the case, and a feeding mechanism is further arranged in the front of the interior of the case. According to the invention, a rotatable test tube rack and a sampling rack are arranged, and a plurality of test tubes and sampling needles are arranged in the test tube rack and the sampling rack, so that the test tube rack can accommodate a plurality of test tubes, and further sampling, detection and analysis treatment of a plurality of samples can be realized at a time. In addition, the plurality of sampling needles are arranged in the sampling rack, when different samples are sampled, the samples are sampled by selecting different sampling needles, so that the problem of sample interference caused by repeated sampling by a single sampling needle in the prior art can be effectively solved.

The invention discloses compact range air interface testing equipment, which comprises a measuring antenna, an object placing table and a rotatable connecting rod; and the measuring antenna, the object placing table and the rotatable connecting rod are all located in a darkroom; the object placing table is used for placing a tested piece; the rotatable connecting rod is connected with the measuring antenna, and the rotatable connecting rod is used for fixing the measuring antenna; the measuring antenna is arranged over the object placing table, so that the object placing table is located in a quiet zone of the measuring antenna; and the rotatable connecting rod can perform arc-shaped motion above the measured piece so as to drive the measuring antenna to perform spherical scanning on the measured piece. According to the invention, the test distance is effectively shortened through the compact field reflecting surface or the plane wave generator, so that the space of a required darkroom is reduced, the device can better adapt to tested pieces with different sizes through the lifting assembly, and spherical scanning or measurement of the tested pieces can be realized through the rotatable connecting rod.

The invention provides a multilayer detachable constant-temperature porous medium seepage test device suitable for PIV (particle image velocimetry). The multilayer detachable constant-temperature porous medium seepage test device comprises a seepage model box, a constant-temperature seepage loading system, a seepage pressure measuring system and a water quality monitoring system. The test device has the advantages of constant temperature, detachability, flexibility in sample preparation and sampling, sterilization and the like. The multilayer detachable sample preparation and sampling is adopted, and the problems that in a traditional integrated one-dimensional soil seepage test bed, media are uniform and single, accurate segmented sampling cannot be achieved, and the test environment temperature is unstable are mainly solved. Meanwhile, by matching with a detachable light-transmitting box body suitable for a particle image testing technology, the defect that a conventional testing device is not suitable for a particle image velocity measurement system due to column refraction of a cylindrical seepage column is overcome. The invention further provides a testing method of the multilayer detachable sampling constant-temperature porous medium seepage testing device suitable for PIV.

The invention discloses a soil sampling device for environment-friendly spot check detection. The soil sampling device comprises a base, a sampling part, a ground gripping part and a buffering part, supporting plates are welded to the two sides of the top of the base, a control panel is installed on the outer wall of one side of each supporting plate, a top plate is welded to the tops of the supporting plates, and a second hydraulic cylinder is fixedly installed at the bottom of the top plate through bolts; a second hydraulic telescopic rod is arranged at the output end of the second hydraulic cylinder, a mounting frame is welded to the telescopic end of the second electric telescopic rod, a motor is fixedly mounted in the mounting frame through screws, a buffer component is arranged at the bottom end of the mounting frame, and a sampling component is fixedly mounted at the end of the buffer component. The soil sampling device can adapt to different geological environments, is convenient for sampling on uneven land, effectively prevents the taken samples from scattering, can match the samples with the sampling depth of the samples, is beneficial for people to use, is more accurate in sampling, is higher in use efficiency, and is prolonged in service life.

The invention discloses a sample preparation method for analysis samples of bamboo shoot flesh. The method comprises the following steps: selecting raw material, cleaning, removing roots, drilling for sampling, chopping, mixing, freezing, packaging, and refrigerating to obtain the analysis samples of the bamboo shoot flesh. According to the method provided by the invention, sample points with different aging degrees and different physiological activities can all be obtained, drawbacks of the existing sample preparation are overcome, the problems of heterogeneity of growth of the bamboo shoots, poor representativeness of the traditional sampling methods and large deviation of reliability of comparison between batches are solved, the representativeness and accuracy of asymmetrical bamboo shoot flesh samples are greatly improved, system errors are reduced, and the reliability and accuracy of the analysis results can be improved. The method plays a huge role in the biological analysis of bamboo shoots, and is particularly applicable to the analysis of nutrient composition of bamboo shoots, analysis of heavy metal contents, analysis of pesticide residues, analysis of antibiotic contents, postharvest physiological and biochemical analysis, DNA or RNA extraction analysis and sampling.

The invention relates to the technical field of biology and in particular relates to a method and equipment for detecting cytoplasmic inheritance. The method for detecting cytoplasmic inheritance provided by the invention comprises the following steps: (1) respectively obtaining different polymorphic sites in parental samples of biological materials based on polymorphism of cytoplasmic nucleic acid sequences of the parental samples of biological materials, wherein the parental samples comprise male parent samples and female parent samples; (2) obtaining polymorphism results of cytoplasmic nucleic acid sequences of offspring samples by utilizing a digital PCR (Polymerase Chain Reaction) technology based on different polymorphic sites; (3) determining the cytoplasmic inheritance of the biological materials based on the polymorphism results in cytoplasm of the offspring samples. Meanwhile, the invention correspondingly provides a device for detecting cytoplasmic inheritance. The method and device provided by the invention are used for detecting the cytoplasmic inheritance characteristics, are flexible in sampling, and have high resolution, and the competitive effect existing between templates is avoided; meanwhile, the method and device have extremely high sensitivity.