14results about How to "Implement sampling" patented technology

The invention relates to the field of atmospheric environment monitoring and high-altitude sampling, and discloses an atmospheric trace nitrous acid and formaldehyde profile detection device carried by a small aircraft and a detection method. The absorption liquid is fed into the double-channel miniature spiral trapping trap through a peristaltic pump to be mixed and contacted with the sample gas to form a sample solution; a liquid storage bottle is arranged on the automatic sample disc, and the top of the first liquid inlet needle is connected with a liquid outlet of the dual-channel miniature spiral trapping trap; a color developing solution in the color developing solution storage bottle is injected into the liquid storage bottle through a second liquid inlet needle, and the constant-temperature reaction kettle controls the color developing reaction temperature to form a sample solution to be detected; a to-be-detected sample solution is pumped into the absorption cell through the liquid pumping needle, and the liquid pumping needle is driven by the liquid pumping arm to move up and down; the absorption cell is connected with a detector, and the detector is used for detecting the component concentration of the sample solution to be detected; the automatic sampler and the rapid reaction detector comprise the same automatic sample disc to realize rapid sample transfer.

The application relates to the technical field of big data monitoring, and particularly discloses a vector biological monitoring information system, which comprises a routine monitoring module, a special investigation module and a quality control module; the routine monitoring module is used for performing the vector biological ecology density, drug resistance and pathogenicity monitoring tasks periodically; the special investigation module comprises a background investigation submodule, a pathogen carrying investigation submodule and a water level fluctuation zone investigation submodule; the background investigation submodule is used for constructing a vector biological species background list database; the pathogen carrying investigation submodule is used for monitoring and statistically analyzing the situation of vector biological pathogen carrying; and the water level fluctuation zone investigation submodule is used for managing the water level fluctuation zone regions of reservoirs and rivers in different vector density dynamic data; the quality control module is used for monitoring the completeness, timeliness and standardization of the data reporting, and solves the technical problem that the existing vector biological monitoring information system lacks flexible and in-depth special investigation capability, thereby causing insufficient assessment of complex and special public health risk scenes.

The utility model belongs to detection device technical field, specifically is a kind of parasitic detection with quantitative sampling smearing integrated tool, including sampling rod;Sampling rod one end is fixedly connected with quantitative spoon;Sampling rod other end is equipped with adjusting assembly;Sampling rod is installed with scraper through adjusting assembly;Sampling rod middle part detachably installs protective assembly;Sampling rod passes through adjusting assembly and includes fastening assembly;Sampling rod is close to adjusting assembly and includes antiskid component;Through the above structure, quantitative spoon carries out quantitative sampling to sample and using scraper is evenly coated in the setting of sample on glass slide, and integrated smearing structure is formed, the function of sample sampling and even coating is realized, the operation step of sampling and scraping piece split design when coating is more complicated, improve the integration of device, simplify the operation step of sampling coating when detecting, improve the efficiency of detection.

The application discloses a method for realizing a restricted Boltzmann machine optically. The application can realize analog computing of a restricted Boltzmann machine and optical Gibbs sampling, and has the advantages of wide application range, fast information transmission, simple structure, low cost and fast computing. The application uses a coherent wide-spectrum light source as a signal input, uses a grating or other light splitting device to split the light field, and then the light field is incident on a modulator. Then, the spin, interaction and magnetic field parameters are encoded on the light wavefronts at different positions through a time or space light modulator. An optical Fourier transform is performed by using a time or space lens system. The light intensity after the Fourier transform is measured by using a detector. Finally, the optical Gibbs sampling is realized by calculating the difference between the light intensities measured twice, the computing complexity is reduced, and the computing efficiency is improved. The method provided by the application has important application prospects in the field of optical neural networks and the like, and can realize applications such as generated content and classification identification, and is convenient for integration into an optical chip and the like.

The application provides an IGBT module electrical parameter on-line measuring device and method, the device comprises an interrupt control unit, a micro control unit and an analog-digital conversion unit, the micro control unit comprises a micro processing unit and a first timing unit, the application does not use FPGA, greatly reduces the hardware cost, reduces the power consumption and the circuit board area of on-line measuring device, and is convenient for integration.The application realizes the high-speed sampling of electrical parameters in the transient process of IGBT module turn-on or turn-off based on a first interrupt signal, realizes the low-speed sampling of electrical parameters in the steady state process of IGBT module turn-on or turn-off through a second interrupt signal, simultaneously realizes the high-speed and low-speed sampling of IGBT module turn-on or turn-off, the frequency range of sampling pulse is wide, and the data amount of electrical parameter sampling is greatly reduced, which provides a data basis for the fault diagnosis of power electronic equipment device level, on-line estimation of junction temperature and aging health index monitoring.

This invention relates to an integrated system, method, and unmanned aerial vehicle (UAV) system for early warning, sampling, and replenishment of bioaerosols. The controller activates a microbial early warning device to allow air to enter. The device samples airborne microorganisms, generating fluorescent signals. The controller analyzes these fluorescent signals to determine if the aerosol concentration exceeds a preset value or if microbial aerosols are detected. If so, the controller activates the microbial early warning device and simultaneously starts the microbial sampling and replenishment device. A sampling liquid pump injects the sampling liquid into the sampler, and a fan then circulates air into the sampler for sampling. During sampling, a temperature and humidity sensor monitors the ambient temperature and humidity in real time every second. The controller uses this data to calculate the evaporation rate of the sampling liquid (evaporation rate per second = replenishment rate per second) using a fitting function. The controller then controls the sampling liquid pump to operate for the calculated time, injecting the sampling liquid into the sampler for real-time sampling and replenishment. Once the preset sampling time is reached, the controller activates the sample pump to inject the sample liquid from the sampler into a sample bottle.

The invention discloses an electric power operator behavior edge identification and AR correction method and system based on a double-flow heterogeneous lightweight network. The method comprises the following steps: acquiring a first visual angle video stream and sensor data of a six-axis inertial measurement unit through intelligent equipment; performing normalization and de-noising processing on the video frame, and segmenting the video frame into short-time video clips according to a time window; running the pre-trained double-flow heterogeneous lightweight network, performing real-time reasoning on the video clip, and outputting a current behavior category label; the behavior confidence degree output by the double-flow heterogeneous lightweight network model is compared with a preset threshold value to judge whether the event is a violation event or not; if the event is identified as a violation event, a deviation correction mechanism is triggered immediately; and encrypting and uploading the violation event log to an enterprise security management platform or other third-party platforms for users to check, count and trace. The method can effectively solve the problems of high behavior identification delay, dependence on cloud, low edge equipment operation efficiency, insufficient multi-behavior identification precision and the like in the prior art.

The application discloses a laser-monocular fusion SLAM method and system based on semantic depth, relates to the technical field of image processing, and comprises the following steps: fusing a sparse depth map and confidence thereof, acquiring a semantic feature map and an instance segmentation mask, constructing an energy function, solving the function to acquire a dense depth map and a pixel depth uncertainty map thereof; according to the dense depth map, dynamic feature points are removed in combination with semantic categories and continuous frame geometric characteristics; relative poses between adjacent frames are calculated according to visual reprojection errors and laser point cloud alignment errors; key frame poses are determined based on the relative poses; global optimization poses are acquired in combination with image feature constraints, semantic constraints and the pixel depth uncertainty map; and the global optimization poses and the dense depth map are spatially fused to construct a dense three-dimensional map containing semantic information. The application realizes high-precision dense depth recovery and robust positioning, and effectively improves the positioning stability and map quality in a dynamic and complex environment.

The utility model provides a current testing device and an electronic device, the current testing device comprises a voltage output circuit, a current detection circuit, a differential probe and an oscilloscope, the voltage output circuit outputs voltage and current to a chip to be tested through the current detection circuit, and meanwhile, the oscilloscope outputs the voltage and the current to the chip to be tested. The voltage output circuit adjusts self output voltage according to voltage feedback of the voltage feedback end, so that the voltage output to the detected chip is constant as target voltage, the problem of different output voltages caused by voltage drop is avoided, meanwhile, the voltage difference between the two ends of the current detection circuit can be measured by adopting a differential probe, and the detection accuracy is improved. The differential probe outputs a single-end voltage signal, the oscilloscope can obtain current data according to the single-end voltage signal, and the differential probe has high bandwidth, so that sampling of a current signal at a higher frequency band can be realized, and the measurement accuracy of transient current change is improved.

The present application relates to a kind of motor train unit net pressure zero-crossing rapid detection system and method, system includes the net pressure acquisition circuit of acquisition analog net pressure signal, the analog-digital converter of the analog net pressure signal into digital net pressure signal, FPGA;FPGA is sampled to the digital net pressure signal sent by analog-digital converter, and the sampled digital net pressure signal is carried out sliding window filtering and FIR filtering and obtains the sine wave net pressure signal of frequency 50Hz;Zero-crossing detection module is set in FPGA, zero-crossing detection module is set to: when reaching the preset threshold T of continuous net pressure data greater than zero, mark Flag=1;When reaching the preset threshold T of continuous net pressure data less than zero, mark Flag=0;When the continuous preset threshold N packet net pressure data less than zero, then output zero-crossing interrupt signal.The present application can be real-time fast and accurately detect motor train unit net pressure zero-crossing, so that motor train unit still maintains normal operation in the case where net pressure distortion is serious.

The invention relates to a cut tobacco detection system and a cut tobacco detection method.The cut tobacco detection system comprises a screening assembly, a bearing table, a flattening assembly, a transfer assembly, a detection assembly and a controller, the screening assembly comprises a vibrating screen plate, and the screen plate is provided with a first screening area, a first end and a second end, tobacco shreds on the screen plate slide from the first end to the second end under the vibration effect, and the bearing table corresponds to the first material screening area and is provided with a bearing part used for bearing object tobacco shreds screened and falling from the first material screening area. The transfer assembly is provided with a sampling transfer end with the position and angle adjustable, and the sampling transfer end is used for transferring part of tobacco shreds on the feeding channel to the sieve plate and transferring the flattening assembly to conduct flattening action. The detection assembly has a detection end; the controller is in communication connection with the transfer assembly, the detection assembly and the screening assembly. The problems that a tobacco shred detection system is insufficient in detection sample representativeness, difficult in image processing and limited in measurement precision and accuracy can be solved.

The utility model discloses an oil field oil displacement agent reaction kettle which comprises a shell, a rotary stirring mechanism is arranged in the shell and comprises a motor installed at the upper end of the shell, a first belt wheel is fixedly connected to an output shaft of the motor, a rotary pipe is vertically arranged at the upper end of the shell in a penetrating mode, and a second belt wheel is fixedly connected to an output shaft of the rotary pipe. And the rotating pipe is rotationally connected with the upper end of the shell, a second belt wheel is fixedly connected to the upper end of the rotating pipe, the first belt wheel and the second belt wheel are in transmission connection through a transmission belt, the lower end of the rotating pipe extends to the inner bottom of the shell, and the left side and the right side of the rotating pipe communicate with L-shaped connecting pipes correspondingly. Aiming at the use problem of the reaction kettle, the equipment is provided with the bidirectional water pump, so that sampling of reactants and subsequent cleaning of the shell can be realized, and meanwhile, the equipment is provided with the scraping strip, so that a water spraying cleaning part can be scraped in time, and the cleaning effect is effectively improved.

According to the testing device for the embedded voltage reference and temperature sensor of the microcontroller, a PC is used for sending a control word to a lower computer through a UART port, the lower computer receives the control word and then collects the voltage reference of the microcontroller of a set station through a digital multimeter, the temperature sensor is started to conduct temperature collection, and the temperature sensor is started to conduct temperature measurement. A voltage reference collected by the digital multimeter is uploaded to the PC through the USB port, a temperature sampling value is uploaded to the PC through the UART port by the lower computer and is distinguished, printed and stored on the PC, and automatic testing of the embedded voltage reference and the temperature sensor of the microcontroller is achieved. While automation is realized, the test device and method also consider the mass production condition, and the lower computer controls the microcontroller to realize erasing and programming of a self-test program; the simultaneous measurement number of the microcontroller is increased through variable address and multi-station hardware design; and through independent design of the lower computer and the microcontroller, the requirements of the embedded voltage reference of the microcontroller and the full-temperature-zone online test of the temperature sensor are met.

The application relates to the field of water quality detection, in particular to a multifunctional sampling device for water quality detection, which comprises a sampling cylinder, a pull rod one, a sliding sleeve one, a handle and the like; the sampling cylinder is provided with the handle; the sampling cylinder is provided with a sampling cavity one, the sampling cavity one is provided with a sampling port one; the sampling cavity one is slidably connected with a piston one; the sampling cylinder is slidably connected with the pull rod one used for pulling the piston one to move; the sampling cylinder is slidably connected with the sliding sleeve one; the sliding sleeve one is installed with two push rods; the sampling cylinder is slidably connected with a sliding sleeve two, and the sliding sleeve two is connected with the push rods; the sampling cylinder is fixedly connected with a fixing ring; the fixing ring is fixedly connected with a spherical cage fixedly connected with the sliding sleeve two, the sampling port one and a sampling port two are located in the spherical cage, and the spherical cage is made of a deformable material; and the sampling cylinder is provided with a sampling cavity two. The waterweeds are expanded by the spherical cage, are separated from the sampling port one, and are isolated, so that when sampling, the waterweeds are prevented from flowing into the sampling device with water, and the device is prevented from being blocked.