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54results about How to "Meet the needs of collection" patented technology

Soft cloth subsealing type shallow water undisturbed surface sediment sampler

The invention relates to a soft cloth subsealing type shallow water undisturbed surface sediment sampler comprising a sampling sleeve, a sampling mechanism and a sampling liner. The soft cloth subsealing type shallow water undisturbed surface sediment sampler is characterized in that the sampling sleeve comprises a sampling drill bit, a sampling cylinder, an outer counterweight deckle board, an upper cover plate and a hard connecting rod; the sampling mechanism comprises a lifting rope, a lifting rod, a lifting rod fixing frame, a side face connecting shaft, a side face connecting shaft baffle, a cable wire, a pulley, a slide rail of side face connecting shaft, a bottom connecting shaft, soft waterproof subsealing cloth, a spring bolt and a fixing mechanism of soft waterproof subsealing cloth; and the sampling liner comprises a sampling liner outline border, a sampling liner soleplate and a sampling liner soleplate inserting mechanism. The soft cloth subsealing type shallow water undisturbed surface sediment sampler disclosed by the invention has the advantages of large sampling area, high sampling success rate, non-damage on physical structure and sequence structure of surface sediment, and the like, and the sampler is capable of meeting collecting demand of shallow water surface sediments and is particularly suitable for collecting surface sediment samples within 3m water depth.
Owner:HOHAI UNIV

Microbiological aerosol concentration sampler and concentration sampling method

The invention relates to a microbiological aerosol concentration sampler and a concentration sampling method. The microbiological aerosol concentration sampler is characterized by comprising a concentrator having a virtual impact structure, the concentrator is connected with a total flow air channel, a main flow air channel and a small flow air channel, the main flow air channel is provided with a main flow sensor and a main flow sampling pump sequentially, an output end of the small flow air channel is connected with a liquid impact type microbiological sampler which is connected with a drying bottle through an air channel, the drying bottle is connected with the small flow sampling pump through an air channel, a small flow sensor and a small flow regulating valve are arranged on the air channel between the drying bottle and the small flow sampling pump sequentially, the main flow sensor and the small flow sensor are connected with a digital signal processor electrically, and the digital signal processor is electrically connected with a man-machine interface and the main flow sampling pump. The microbiological aerosol concentration sampler is high in sampling efficiency and capable of preventing damage to microbial activity by long-time sampling, avoiding pollution regeneration and improving detection rate of low-concentration microbiological aerosol and can be widely used for sampling of the indoor and outdoor microbiological aerosol.
Owner:北京绿林环创科技有限公司

Low-voltage power line carrier communication device and power consumption information collection system and method

The invention discloses a low-voltage power line carrier communication device and a power consumption information collection system and method containing the low-voltage power line carrier communication device. The low-voltage power line carrier communication device can send and receive power line broadband carrier signals. The power consumption information collection system comprises a concentrator and the low-voltage power line carrier communication device, which are connected and communicate with each other, a plurality of narrow-band carrier collection terminals in connection and communication with the concentrator, and a plurality of broadband carrier collection terminals in connection and communication with the low-voltage power line carrier communication device; narrow-band carriercollectors of the narrow-band carrier collection terminals transmit power consumption information data obtained from electric energy meters to the concentrator through power lines; and broadband carrier collectors of the broadband carrier collection terminals transmit power consumption information data obtained from electric energy meters to the low-voltage power line carrier communication devicethrough power lines and then transmits the power consumption information data to the concentrator. The efficiency of power line carrier communication in power consumption information collection application is greatly improved.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +4

Intelligent multi-functional multi-range digital display pressure gauge

The invention discloses an intelligent multi-functional multi-range digital display pressure gauge, and belongs to the field of pressure gauges. The intelligent multi-functional multi-range digital display pressure gauge includes a core probe, a protective fixing structure is fixedly installed on outside the core probe, and a circuit board is fixedly installed on the left side of the protective fixing structure. The processed signals are correspondingly transmitted to a liquid crystal display gauge head and transmitted into a storage module for storage, subsequent retrieval and observation areconvenient, signals at the output end of a chip are displayed in recognizable and readable states through the liquid crystal display gauge head, and parameters and pressure index units and numbers are displayed in a matching mode, so that users can use and observe conveniently; and by designing a chip program, the intelligent multi-functional multi-range digital display pressure gauge is arrangedto meet the requirements of different application scenarios and different ranges, so that the measurement range of the pressure gauge can be adjusted as needed so as to meet the needs of different scenarios, and the use range of the pressure gauge is expanded.
Owner:昆山爱福机械仪表股份有限公司

Method for near-infrared detection of mass content of miscarriage-prevention pills

The invention discloses a method for near-infrared detection of the mass content of miscarriage-prevention pills. The method comprises the following steps of dissolving the miscarriage-prevention pills by using methanol, and filtering to obtain filtrate which is a test solution; carrying out near-infrared spectrum detection on the miscarriage-prevention pills and measuring the concentration of effective components in the corresponding test solution by high performance liquid chromatography; selecting a reasonable modeling near-infrared spectrum data area, and establishing a corresponding relation between the near-infrared spectrum data and the concentration of the effective components in the test solution; by utilizing the established corresponding relation, carrying out infrared spectrumdetection on the miscarriage-prevention pills to be detected to realize measurement for the concentration of the effective components in the miscarriage-prevention pills to be detected. Compared withthe HPLC (High Performance Liquid Chromatography), near-infrared spectroscopy is simpler and faster in operation, is suitable for content measurement of large-batch miscarriage-prevention pills, can meet the needs for large-scale sample information acquisition in industrial production and plays an important role in controlling the stability of a final preparation product.
Owner:GUANGZHOU ZHONGDA NANSHA TECH INNOVATION IND PARK +1

Collection device and determination method for determining emission contribution of endogenous greenhouse gases in shallow water body

The invention belongs to the technical field of greenhouse gas detection, and provides a collection device and a determination method for determining emission contribution of endogenous greenhouse gases in a shallow water body. The collection device comprises a bottom ring, the bottom ring is in threaded connection with a plurality of middleware, the topmost middleware is in threaded connection with a top ring, water inlets and outlets are formed in the middles of the middleware, sealing cover plates are arranged at the positions corresponding to the water inlets and outlets, and springs are arranged between the sealing cover plates and the middleware. According to the invention, through the arrangement of the middleware, the top ring and the bottom ring, under the combined action of an internal thread and an external thread, the middleware, the top ring and the bottom ring can be combined to form a box body meeting the sampling environment and the required height, and greenhouse gases generated by an in-situ water body, a water-gas interface, sediments and the water body can be respectively collected; and the contribution value of the device to the greenhouse gas emission of the water-gas interface is calculated through a calculation formula, and the device is simple and stable in structure, can be detached and carried and is relatively convenient to use.
Owner:CHONGQING NORMAL UNIVERSITY

Microbiological aerosol concentration sampler and concentration sampling method

The invention relates to a microbiological aerosol concentration sampler and a concentration sampling method. The microbiological aerosol concentration sampler is characterized by comprising a concentrator having a virtual impact structure, the concentrator is connected with a total flow air channel, a main flow air channel and a small flow air channel, the main flow air channel is provided with a main flow sensor and a main flow sampling pump sequentially, an output end of the small flow air channel is connected with a liquid impact type microbiological sampler which is connected with a drying bottle through an air channel, the drying bottle is connected with the small flow sampling pump through an air channel, a small flow sensor and a small flow regulating valve are arranged on the air channel between the drying bottle and the small flow sampling pump sequentially, the main flow sensor and the small flow sensor are connected with a digital signal processor electrically, and the digital signal processor is electrically connected with a man-machine interface and the main flow sampling pump. The microbiological aerosol concentration sampler is high in sampling efficiency and capable of preventing damage to microbial activity by long-time sampling, avoiding pollution regeneration and improving detection rate of low-concentration microbiological aerosol and can be widely used for sampling of the indoor and outdoor microbiological aerosol.
Owner:北京绿林环创科技有限公司

Low-voltage transformer area topology rapid identification system

The invention relates to a low-voltage transformer area topology rapid identification system and belongs to the technical field of intelligent power grids and intelligent power utilization. The systemcomprises a PDA hand-held terminal, a main station server and a low-voltage transformer area topology rapid identification instrument, wherein the low-voltage transformer area topology rapid identification instrument comprises an identification instrument host and an identification instrument slave, the identification instrument host, the identification instrument slave and the PDA hand-held terminal are connected with the master station server through the 4G communication module, the identification instrument slave machine comprises a slave machine trigger circuit, the slave trigger circuitcomprises an MCU pulse control circuit, a triode switch circuit and a solid-state relay JD1, a trigger signal output end of the MCU pulse control circuit is connected with the weak current end of thesolid-state relay JD1 through the triode switch circuit, and a strong current end of the solid-state relay JD1 is connected with the AC 220V phase voltage of a to-be-tested transformer area through the load resistor R1. The system can solve a problem that the topological relation of the low-voltage transformer area is not clear, and meets the requirements of electric power companies and power supply departments for quickly identifying the topological structure of the low-voltage transformer area.
Owner:JIANGSU INTELEVER ENERGY TECH CO LTD

Vibrating ladle slag carry-over detection-oriented embedded data acquisition system

The invention discloses a vibrating ladle slag carry-over detection-oriented embedded data acquisition system. The system comprises a multi-point parallel signal acquisition system, a signal pre-processing system and a real-time data analysis system, wherein the multi-point parallel signal acquisition system determines a plurality of characteristic vibration signal measurement points by taking a ladle pouring mechanism and a supporting rack thereof as examination objects; a vibration sensor is arranged at each measurement point to acquire an impact vibration signal generated during the ladle pouring in all directions; the signals are primarily amplified and finally transmitted to the signal pre-processing system in a parallel mode; the signal pre-processing system can receive real-time vibration signals of a plurality of paths of the sensors, pre-process the signals and upload the signals to the real-time data analysis system; and the real-time data analysis system receives a real-time data packet uploaded by the signal pre-processing system, splits the data packet according to data transmission protocol format convention, extracts the impact vibration signal of steel steam and performs the functions of display, storage and analytical judgment.
Owner:ZHEJIANG UNIV OF TECH
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