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49results about How to "Difficult to collect" patented technology

Critical temperature testing system of gunpowder and explosive thermal explosion

The invention discloses a critical temperature testing system of gunpowder and explosive thermal explosion, comprising a temperature-rising heating unit, a reactor unit, an automatic sample feeding unit, a pressure detection unit and a computer, wherein the temperature-rising heating unit comprises a heat-conducting layer, a heat preservation layer, and a single-cavity heating furnace body containing three groups of heating layers and ceramic heat-isolating layers; and the temperature and the temperature-rising speed of the heating furnace body are controlled by the computer. The reactor unit comprises a testing furnace cover, a lifting basket, a sample tank and a pre-heating furnace cover; the automatic sample feeding unit comprises a furnace body bracket, two stepping motors, a pulley wheel and a steel wire rope; the air pressure detection unit comprises a pressure sensor; the pressure sensor is mounted in the sample tank through the testing furnace cover and is connected with the computer; and the computer is provided with a data acquisition card, an image display control piece and a data processing unit. When the critical temperature testing system is used, a gunpowder or explosive sample with the certain size is placed into a special explosion-proof furnace and the sample is heated at the equal temperature or temperature-rising condition, so as to detect the thermal explosion critical temperature when the sample is combusted or exploded.
Owner:XIAN MODERN CHEM RES INST

Intelligent biogas monitoring system based on LoRa technology

The invention discloses an intelligent biogas monitoring system based on a LoRa technology. The system comprises an intelligent terminal, a relay, a convergence gateway, an application management server and a PC client and/or a mobile phone APP terminal, wherein the intelligent terminal collects various data of a biogas meter; the relay forwards the data of the intelligent terminal to the convergence gateway, the convergence gateway is responsible for transmitting and receiving the data of the intelligent terminal and uploading the data to a biogas administrative department through a GPRS network. The intelligent biogas monitoring system is used for communicating through an internal LoRa communication module, so that the communication has the advantages of longer distance and lower power consumption; and furthermore, the system solves the problems that usage data of a biogas user is liable to be collected and the usage state is liable to be controlled under the conditions of bad biogas usage environment, poor mobile network signal, complicated wired laying and dispersive user management and has the advantages of long communication distance, low power consumption, accurate and timely data acquisition, remarkable beneficial effect and fitness for application and popularization.
Owner:ENERGY RES INST OF SHANDONG ACAD OF SCI +2

Multimode recognition device and method based on features of face, fingerprint and finger vein

The invention discloses a multimode recognition device and a method based on features of a face, fingerprint and finger vein. The multimode recognition device based on features of the face, the fingerprint and the finger vein is prepared and started; after the intensity of a light source is stabilized, the original image of the face is acquired by a first camera, the original finger image of the vein of an extended finger is acquired by a second camera, and a fingerprint module acquires the original fingerprint image; the living body image obtained through judgment is subjected to denoising and image enhancement processing, and whether the face image, the fingerprint image and the finger vein image are all living bodies are judged; if a dummy body exists in the images, the dummy body image is eliminated; features of the obtained and judged living body images are extracted respectively; the extracted features are fused in a feature layer to obtain new features; the new features obtained through fusion are used to train a classifier; and a training feature library is generated, and the training feature library is used to carry out multimode identity authentication on a test person. The problems that destruction and forgery are likely to happen and the recognition success rate is low and the recognition is instable in the case of single living thing recognition can be solved.
Owner:SHANDONG UNIV

Transmittance type confocal CARS (Coherent Anti-Stokes Raman Scattering) micro-spectrum testing method and device

InactiveCN107167457AImplement detectionImproving the ability of micro-region spectral detectionAnalysis by material excitationMicrocellFacula
The invention belongs to the technical field of micro-spectrum imaging detection, and relates to a transmittance type confocal CARS (Coherent Anti-Stokes Raman Scattering) micro-spectrum testing method and a device. The key point of the method is that a laser confocal microtechnique is combined with a CARS spectrum detection technique, a bidirectional light splitting unit is added to a transmittance type confocal microstructure to implement nondestructive separation on Reyleigh scattering light and CARS light, the CRAS is adopted for spectrum detection, and the Reyleigh scattering light is adopted for geometrtic positioning. By virtue of the characteristic that the top point of a confocal curve precisely corresponds to a focus position, the position of an emitted spot focus is precisely captured and positioned, high-precision geometric detection and spectrum detection of high spatial resolution are achieved, and a method and a device for high spatial resolution spectrum detection on microcells of samples are formed. By using the CARS spectrum detection technique, excited Raman scattering light with information of a transparent sample is far stronger than conventional excited Raman light and is short in excitation time, so that possibility is provided for rapidly detecting biological samples and transparent materials. The method is accurate in positioning, high in spatial resolution, high in spectrum detection sensitivity, controllable in focus spot size measurement and wide in application prospect in fields such as biological medicines and transparent material detection.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Preparation method of high-activity microencapsulated lactic acid bacteria starter

The invention discloses a preparation method of a high-activity microencapsulated lactic acid bacteria starter. The preparation method comprises the following steps: inoculating lactic acid bacteria to a culture medium to be cultured; filtering the bacterial liquid with a hollow fiber membrane, and concentrating to form a concentrated bacterial liquid; injecting a fresh culture medium into the concentrated bacterial liquid to be cultured; filtering the prepared bacterial liquid with the hollow fiber membrane and concentrating for 2-3 times to obtain a concentrated bacterial liquid with a unit colony count up to 1,011 cfu/ml above; adding gelatin, sucrose and whey protein into the concentrated bacterial liquid as wall materials; carrying out spray drying to obtain the microencapsulated lactic acid bacteria starter. According to the preparation method disclosed by the invention, the hollow fiber membrane is combined with a bioreactor to carry out high-density culture and concentration of the lactic acid bacteria, so as to implement online continuous filtration, concentration and culture and avoid pollution due to thallus transfer; the coupled spray drying at a low temperature is carried out to effectively protect the concentrated high-density bacteria, so as to obtain the lactic acid bacteria starter with a unit viable count up to 1*10<11>-1*10<12> cfu/ml.
Owner:NANJING AGRICULTURAL UNIVERSITY

Substandard ice cream stick pick-out machine

The invention relates to a substandard ice cream stick pick-out machine. The substandard ice cream stick pick-out machine comprises a conveyer belt and at least one inspection and material removal mechanism. The conveyer belt conveys materials forwards and horizontally. The inspection and material removal mechanism comprises a visual inspection apparatus and a material removal mechanism. The visual inspection apparatus is installed at the position above the conveyer belt and carries out image detection and analysis on ice cream sticks on the conveyer belt, and judges whether one ice cream stick is a substandard product. Operation of the material removal mechanism is controlled according to a judgment result. The material removal mechanism is installed on one side of the conveyer belt, andis located behind the visual inspection apparatus to be used for removing the substandard ice cream sticks. According to the substandard ice cream stick pick-out machine, the visual inspection apparatus above the conveyer belt and the material removal mechanism are used in cooperation with each other to remove the substandard ice cream sticks on the conveyer belt, it is avoided that substandard ice cream sticks are produced and cause harm to consumers, and the operation speed of the whole machine can meet the requirements of users better compared with existing equipment in the market.
Owner:内蒙古佰邦科技股份有限公司

Image sensor pixel with changeable conversion gain and working method thereof

The invention discloses an image sensor pixel with the changeable conversion gain and a working method thereof. The image sensor pixel comprises a first photodiode, a charge transmission transistor, a first reset transistor, a source following transistor, a selection transistor, a floating active area, a second photodiode, a second reset transistor, a capacitor and a switch transistor which are arranged in a semiconductor substrate. The drain electrode end of the switch transistor is connected with the floating active area, the source electrode end of the switch transistor is connected with one electrode end of the capacitor, the grid electrode end of the switch transistor is connected with the second photodiode, the other electrode end of the capacitor is connected with the floating active area, the source electrode end of the second reset transistor is connected with the second photodiode, and the drain electrode end of the second reset transistor is connected with a power source. The photovoltaic conversion gain for lowering the sensor pixel in the high illumination environment is used for achieving the purpose of delaying the pixel saturation time, the problem that in the prior art, real object information in the outdoor high illumination environment cannot be easily collected is solved, and the quality of images output by an image sensor is improved.
Owner:BEIJING SUPERPIX MICRO TECHNOLOGY CO LTD

Moistening device for round gypsum product

The invention discloses a moistening device for a round gypsum product. The moistening device comprises a frame, and a moistening barrel and a filtering barrel which are arranged in parallel in high and low positions on the frame, wherein a discharge opening is formed in the side wall below the moistening barrel, a feed inlet is formed in the side wall above the filtering barrel, and a separating plate for communicating or separating the moistening barrel and filtering barrel is slidably connected between the discharge opening and the feed inlet; a plurality of water filter holes are formed in the bottom of the filtering barrel, a material outlet is formed in the side wall below the filtering barrel, a baffle plate is slidably connected at the material outlet, and the bottom of the moistening barrel and the bottom of the filtering barrel incline along the discharge opening and the material outlet, respectively. According to the scheme, the gypsum product is independently moistened and filtered just by communicating or separating the moistening barrel and the filtering barrel through the separating plate without manual fishing, so that a solution and the gypsum product are conveniently separated, and the bottom of the moistening barrel and the bottom of the filtering barrel incline along the discharge opening and the material outlet, respectively, so that on the one hand, slippage of a material is accelerated, and on the other hand, a purpose of avoiding material residues is achieved.
Owner:CHONGQING QIULU GYPSUM PROD FACTORY

Membrane spinning device and micro-nano material preparation method

The invention relates to a membrane spinning device. The membrane spinning device is used for preparing polymer solution into a micro-nano material and comprises an air guide pipe, a high-pressure airflow generator, a spinning nozzle, a liquid supply device and a receiving device. The high-pressure airflow generator and the spinning nozzle are arranged at two ends of the air guide pipe respectively, the liquid supply device is connected with the spinning nozzle, and the receiving device is arranged on one side of the spinning nozzle. The spinning nozzle comprises a flared spinning cavity communicated with the air guide pipe, two ends of the spinning cavity are provided with an injection orifice and an air inlet, the injection orifice is communicated with the spinning cavity and faces the receiving device, and the diameter of the cross section of the injection orifice is smaller than that of the cross section of the air inlet. By adoption of the flared spinning cavity, airflow pressure is effectively increased, solution forms a stable liquid membrane in the spinning cavity, and high airflow velocity is achieved through low airflow pressure; by a negative-pressure box in a collection area, the problem of generation of a great quantity of instable micro-nano fibers difficult to collect under high-speed airflow action is effectively solved.
Owner:SUZHOU UNIV

Automatic plant mashing device for preparing plant preservatives

The invention relates to the technical field of cosmetics, and discloses an automatic plant mashing device for preparing plant preservatives. The device comprises a juice outlet mechanism, the juice outlet mechanism comprises a juice mashing cylinder, and through cooperative use of an air bag, a push plate, an insulating rod, a mashing stone, a limiting disc and a baffle plate, when juice is collected to a set value, the juice is automatically collected. The situation that a traditional medicine pounding device is difficult to collect juice is changed, more time and labor are saved, through cooperative use of a negative pressure plug and a hydraulic rod, when the juice is collected and the baffle plate is opened, the hydraulic rod is used for driving the negative pressure plug to move, the juice is collected more sufficiently, waste of the juice is reduced, through cooperative use of a rotating shaft, a limiting roller, a second fixed magnet, an inserting plate and an inserting base, after quantitative juice generation is completed, medicine pounding is automatically stopped for collection, meanwhile, negative pressure generation is triggered, therefore the two steps of juice collection and negative pressure generation are linked, the linkage performance of the whole device is improved, and operation is simpler.
Owner:李尚柏

Multifunctional material loading trestle bridge of waste-incineration power plant

The invention relates to a multifunctional material loading trestle bridge of a waste-incineration power plant. The multifunctional material loading trestle bridge comprises a material loading trestle bridge and truck scales, wherein the near-level grade section of the material loading trestle bridge is provided with a foundation pit; the foundation pit is internally provided with the first truck scale and the second truck scale which are mutually parallelly arranged along the longitudinal direction of the material loading trestle bridge; a concrete isolation strip is arranged between the first truck scale and the second truck scale along the longitudinal direction of the material loading trestle bridge on the outer side and is internally provided with more than two inner and outer access holes; the bottoms of the access holes are provided with sewage buckets; the sewage buckets are connected with an external leachate collecting system. According to the technical scheme adopted by the invention, the design is reasonable, so that the problems of non-corresponding relation between a material loading system and a weighing system and difficulty in leachate collection during the waste transportation peak period of an existing waste-incineration power plant can be solved, and the land of the waste-incineration power plant is saved; furthermore waste loading and weighing can be synchronously performed, so that the waste transportation efficiency is improved, environmental pollution is reduced, and the multifunctional material loading trestle bridge is applicable to all types of waste-incineration power plants.
Owner:CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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