61results about How to "Reduce the amount of detection" patented technology

The invention discloses a control circuit for a three-phase high power factor rectifier, and belongs to the field of electrical control. The control circuit comprises an input high-frequency filter circuit, a three-phase input inductor, a three-phase rectifier circuit, a switch tube power circuit, an output rectifier filter circuit, a voltage-dividing detection circuit, an input current detection unit, a single cycle controller and a switch tube driving circuit. A three-phase high power factor can be rectified, high-precision stable output voltage can be obtained, and interference resistance is high.

The invention provides a planting system and a planting method for controlling the temperature of vegetable roots; wherein the system comprises a hydroponic planting nutrient solution pool and a nutrient solution sterilization temperature-control trough; the nutrient solution sterilization temperature-control trough is arranged beside the growing period hydroponic pool, is internally provided with a precise filter, a nutrient solution cooling group, a temperature sensor group and an electric heater heating group and is externally provided with a condensation compression unit that is connectedwith the nutrient solution cooling group; and a ultraviolet sterilization device is arranged above the nutrient solution sterilization temperature-control trough. The method comprises the following steps of: planting the hydroponic vegetable in the planting system for controlling the temperature of the vegetable roots; opening the nutrient solution valves arranged at two sides of the planting pool by the temperature-control planting system; pouring the nutrient solution into the nutrient solution sterilization temperature-control trough; filtering the solution by a precise filter; reducing the temperature when the solution flows by the nutrient solution cooling group subsequently or increasing the temperature by the electric heater heating group so as to lead the temperature of the nutrient solution to be kept at about 18 DEG C in summer and at about 22 DEG C in winter and lead the temperature of the vegetable plant to be reduced or increased, thus leading the vegetables to have the capability of resisting hot or cold weather.

The invention relates to a multicolor infrared low-emissivity environmental protection coating. The coating comprises a component A and a component B, and when in use, the component A and the component B are uniformly mixed according to the mass ratio of 1:10. The component A is aliphatic polyisocyanate; the component B comprises the following components in percent by mass: 20 to 30 percent of fluorocarbon resin, 35 to 50 percent of special pigment, 0 to 5 percent of filler, 1 to 5 percent of a dispersant, 0.1 to 1 percent of a flatting agent; 3 to 8 percent of a directing agent, 0.01 to 0.3 percent of a drier, and 15 to 25 percent of a mixed solvent, wherein the special pigment comprises the following pigments: 0 to 10 percent of titanium dioxide rutile, 0 to 5 percent of 1, 4 diketopyrrolopyrrole series organic red pigment, 0 to 25 percent of chromium oxide green, 0 to 8 percent of titanium-nickel yellow pigment, 0 to 5 percent of black pigment, and 50 to 95 percent of coated color metallic pigment. The average emissivity of the thermal infrared band of the coating is 0.40 to 0.65, and the heavy metal content meets the requirement.

The invention discloses a dual spectrum technology based leaf and stalk separating and cutting quality detection device and detection method. The detection device comprises a spreading device (1), a paving machine (2) arranged under the spreading device (1), an X ray detector (3) arranged under the paving machine (2), a visible light detector (4) arranged under the outlet of the X ray detector (3), a receiving device (6), a frame (5), and a control cabinet (7). The receiving device (6), the frame (5), and the control cabinet (7) are arranged under the outlet of the visible light detector (4).By adopting a visible light and X ray imaging technology and corresponding image algorithm, the tobacco leaf area, tobacco stalk area, and tobacco stalk length can be obtained; the leaves and stalks in a same image do not need to be separated, and the identification accuracy of image detection is improved. The leaf structure and long stalk rate can be detected, the stalk containing rate of leavesand leaf containing rate of stalks can be detected, the stalk density and leaf density are not needed during the index calculation process, and the leaf cutting quality indexes can be automatically calculated out.

An optical imaging device includes a display panel whereon a coordinate detecting area is formed, at least one light source disposed outside the display panel for emitting light to illuminate an object, and a depth sensor installed on a side of the display panel for sensing image data of the object. The image data include a width information corresponding to a distance between the object and the depth sensor in a first direction, and a depth information corresponding to a distance between the object and the depth sensor in a second direction. The optical imaging device further includes a control module coupled to the depth sensor for receiving the image data sensed by the depth sensor and for determining whether to calculate a coordinate value of the object according to the width information and the depth information.

The invention discloses a sensorless brushless DC motor commutation position correction system and method. The system comprises a DC power supply, a three-phase full-bridge inverter, a brushless DC motor, a terminal voltage step-down and filtering circuit, a counter potential zero crossing detection circuit, a DC bus and a b-phase terminal voltage detection circuit, a digital signal processor anda PWM signal driving circuit. The counter potential zero crossing offset caused by filtering and the commutation position offset caused by the hardware circuit device delay and the software calculation delay can be simultaneously compensated by detecting the DC bus voltage and the terminal voltage. Compared with the existing sensorless brushless DC motor commutation position correction system, therequired detection amount is low, the calculation workload is low, the rotor commutation position offset can be quickly and accurately corrected, the accurate rotor commutation position can be obtained and the control and operation performance of the brushless DC motor can be enhanced. The sensorless brushless DC motor commutation position correction system has high universality and is suitable for the sensorless brushless DC motor control system using multiple control strategies.

The invention provides a fault diagnosis method for a sequentially switched parallel regulator. The method comprises the following steps that the work state of the sequentially switched parallel regulator in a faultless condition is analyzed; a fault mode of the sequentially switched parallel regulator is obtained by analysis; a detection point is selected for the solar cell sub-array voltage corresponding to each shunting adjustment circuit, and a sampling frequency is selected; the time length of sampling data is selected, and covers the complete switching period of the solar cell sub-arrayvoltage; the solar cell sub-array voltage corresponding to each shunting adjustment circuit is sampled, and an adjusted level is searched for; according to the found adjustment level, fault diagnosisis carried out; and sampling and diagnosis in the next round is turned to. According to technical schemes of the invention, it is only required to add the detection quantity of the solar cell sub-array voltage to each shunting adjustment circuit to carry out detection and positioning accurately, the method is simple, the fault detecting rate is high, the fault can be located rapidly and diagnosedrapidly, and fewer detection quantities are added.

The embodiment of the invention provides a data processing method and equipment. For a transmitting end, the data processing method comprises the following steps of obtaining data to be processed and a channel coding mode of the data to be processed; determining a modulation mode of the data to be processed in accordance with the channel coding mode and the preestablished corresponding relation between the channel coding mode and the modulation mode; coding the data to be processed in accordance with the channel coding mode, and modulating the data to be processed in accordance with the established modulation mode; and sending processing results in accordance with a fixed symbol rate after the data to be processed is coded and modulated. By using the scheme provided by the invention, the complexity of processing the data at the transmitting end can be effectively reduced. Additionally, the detection quantity of identifying the coding process at a receiving end is reduced, and the complexity is reduced.

The invention discloses a multiplex PCR rapid detection primer group for common feline viruses, which comprises four pairs of PCR primers aiming at four feline respiratory tract and enteroviruses, namely FCV, FPV, FIV and FHV-1, and the four pairs of PCR primers respectively have base sequences from SEQ. ID. NO.1 to SEQ. ID. NO.8 in a sequence listing. Accordingly, a corresponding rapid detection kit is also developed. Single or mixed infection of four common feline viruses, namely FCV, FPV, FIV and FHV-1, can be simultaneously detected in the same reaction tube by using the rapid detection kit, the rapid detection kit has the characteristics of high specificity, good sensitivity, short time consumption and low cost, and the detection quantity of a recombinant plasmid standard substance can be as low as 4.45*10<1> copies / mu L. The multiplex PCR rapid detection kit and primer group provide quick and simple tools for detecting mixed infection of felines, lay a solid foundation for clinical quick identification and detection and laboratory epidemiological investigation, are beneficial to timely making a treatment scheme in pet diagnosis and treatment industry and reducing the death rate of the felines, and have important significance for public health and safety.

The embodiment of the invention provides a battery performance formula fitting method and device, a storage medium and computer equipment. The method comprises the following steps: acquiring actual measurement performance data corresponding to a plurality of temperatures of a battery in a first temperature range; fitting the plurality of temperatures and the actual measurement performance data corresponding to each temperature through an Arrhenius formula to obtain a fitting constant in the Arrhenius formula; generating a battery performance formula according to the fitting constant and the Arrhenius formula; calculating the plurality of temperatures according to the battery performance formula to generate fitting data corresponding to each temperature; and verifying the fitting data according to the actual measurement performance data corresponding to the plurality of temperatures, and if the verification succeeds, determining that the battery performance formula is qualified. Therefore, the experimental data detection amount is reduced, and the precision of the battery management system is improved.

The invention discloses a method for detecting the cleanliness of Chinese patent drug production equipment, which includes the following steps: a) preparing a intermediate of a to-be-detected variety into the standard solution with a certain concentration according to the residual limit standard; b) sampling the cleaned Chinese patent drug production equipment by adopting the conventional sampling method and performing concentration, extraction or constant volume for the sample, so as to obtain the to-be-detected solution; c) absorbing the standard solution and the to-be-detected solution to drip on the same thin-layered plate respectively; and d) spraying the developer to the thin-layered plate, comparing the color of the spot of the to-be-detected solution with that of the spot of the standard solution, or performing the thin layer chromatography scanning, so as to compare the peak area of the spot of the to-be-detected solution with that of the spot of the standard solution. The method for detecting the cleanliness of the Chinese patent drug production equipment has wide application range, low detection cost and excellent detection effect.

The invention provides a kit for detecting markers of ovarian cancer cells in peripheral blood. The kit comprises magnetic beads and corresponding buffer reagents, wherein the magnetic beads are combined with ovarian cancer antibodies. According to the kit, the biological activity of tumor cells in blood circulation of a patient with ovarian cancer is detected through molecular biology methods including magnetic bead separation, RT-PCR and the like, and genes of a drug treatment target are determined; and by detecting the expression levels of EpCAM-2, Muc1, Her2, Wt-1, Pax8 and P16, the development and outcome of ovarian cancer are determined, and the theoretical basis and the experimental evidence are provided for the individual-based treatment of ovarian cancer. The kit provided by the invention is low in sample detection amount and high in detection sensitivity and has little harm to a patient, and the detection rate can reach up to 100%.

The invention relates to the technical field of sewage treatment and detection, in particular to a sewage treatment and detection method based on template matching, which comprises the following steps: acquiring an original standard matching area, a preprocessed to-be-detected sewage image and an HSV image of the to-be-detected sewage image; obtaining a maximum inscribed rectangle corresponding to each superpixel block, and further obtaining a to-be-matched region and a standard matching region corresponding to each superpixel block of the HSV image; determining texture feature parameters and color feature parameters of the to-be-matched area and the standard matching area according to the to-be-matched area and the standard matching area corresponding to each superpixel block; determining a region factor of each superpixel block, and further determining a sewage treatment factor corresponding to the to-be-detected sewage image; acquiring a sewage treatment factor threshold value, and judging the sewage treatment effect of the to-be-detected sewage according to the sewage treatment factor and the sewage treatment factor threshold value. The sewage treatment effect of the sewage is judged through a sewage treatment detection technology, and the detection accuracy of the sewage treatment effect is improved.

The invention relates to primers, probe and kit for detecting duck-origin coronavirus through fluorescence quantitative RT-PCR (Reverse Transcription-Polymerase Chain Reaction). Nucleotide sequences of an upper primer, a lower primer and the probe are 5'-AGGTAGTGGTGTTCCTGATAATGAG-3', 5'-ACGCATCTGGGACTGGTTTTC-3' and 5'-CCTGGCTTATACCTGGCTTGGCGTCT-3'; and the kit comprising the primers and the probefor detecting the duck-origin coronavirus through the fluorescence quantitative RT-PCR is established. The kit has the advantages of high specificity, high flexibility, accurate quantification, easiness and convenience in operation, short time, high efficiency and low cost and can be used for detecting a large number of samples and providing basis for treatment, prevention and control of IB (Infectious Bronchitis) in a short time; and compared with the conventional PCR detection, the primers, the probe and the kit can be used for effectively preventing occurrence of false positive, and has decreased detectable amount of virus and higher sensitivity.

The invention provides a detection method for a memory cell in SRAM. According to the invention, the input terminal of a first inverter in the memory cell is connected with the output terminal of the first inverter and with the input terminal of a second inverter; since the input and the output of the first inverter are equal and the input and the output of the second inverter accord with the characteristic curve of the inverter, if the first inverter matches with the second inverter, the output of the first inverter is equal to the output of the second inverter under the condition that the input of the first inverter is equal to the input of the second inverter; thus, under the condition that the input of the first inverter is equal to the input of the second inverter, if the output of the first inverter is not equal to the output of the second inverter, the first inverter does not match with the second inverter and it is certain that the threshold-voltage of at least one transistor drifts. As the memory cell is used as a detection unit, individual detection of every MOS transistor in the memory cell is avoided; detection quantity of the whole SRAM is reduced; efficiency is improved; cost is low; and results are accurate.

The invention provides a fabric tightness detecting apparatus. The fabric tightness detecting apparatus comprises an apparatus body, the apparatus body is connected to a PLC industrial control machinearranged at the outer part of the apparatus body in a communication mode, the apparatus comprises a desk body, and further comprises a light source mechanism, a test box and a light receiving mechanism arranged on the desk body. The light source mechanism is arranged on one side of the top of the desk body, the light receiving mechanism is arranged on the other side of the top of the desk body, the test box is arranged between the light source mechanism and the light receiving mechanism, and central axial lines of the light source mechanism, the test box and the light receiving mechanism areon a same vertical plane. The fabric tightness detecting apparatus is based on a box method principle of light transmission, detecting is simple, detecting quantity is small, manual labor intensity islowered, the detecting efficiency is improved, and meanwhile, accuracy of detecting results is further improved, stability and reliability are high, and the fabric tightness detecting apparatus has good practical values.

The invention relates to a video character detection method and device. The method comprises the following steps: carrying out shot segmentation on a target video to obtain each sub-lens segment of the target video; performing character detection on the key frames in each sub-lens segment to obtain a character detection result corresponding to each key frame; for any sub-lens segment, combining the character detection results corresponding to the key frames in the sub-lens segment to obtain a combination result corresponding to the sub-lens segment; and according to the combination result, determining a character detection result corresponding to the sub-lens segment. Character detection is performed based on the key frame of each sub-lens segment, so that the detection amount of characterdetection of a video can be greatly reduced, the character detection efficiency is improved, and a user can know a specific source segment of a character detection result.

The invention discloses a circuit board signal tracing detection system, and the system comprises a first determination module which is used for obtaining the layout information of a circuit board, and determining a layout map of the circuit board according to the layout information; the construction module is used for acquiring signal information of a plurality of detection points on the circuit board and constructing a signal distribution diagram of the circuit board according to the signal information and the layout map; the first acquisition module is used for determining a target area according to the signal distribution diagram and acquiring an image of the target area as a to-be-detected image; the recognition module is used for inputting the to-be-detected image into a pre-trained image recognition model and outputting a plurality of signal lines; and the detection module is used for determining a target signal line in the plurality of signal lines, detecting the target signal line and displaying a detection result. The detection quantity can be reduced, the detection rate can be improved, the signal line on the circuit board can be accurately detected, and the maintenance timeliness can be improved.

The invention relates to a pharmaceutical composition for treating chronic periapical periodontitis and a use thereof. An active component of the pharmaceutical composition is duckweed aqueous extract. A preparation method of the duckweed aqueous extract comprises the following steps of carrying out heating backflow extraction on duckweed by ethanol, carrying out filtration, removing the filtrate, collecting the herb residues, adding water into the herb residues, carrying out heating backflow extraction, carrying out filtration, concentrating the filtrate, carrying out drying and carrying out crushing. The pharmaceutical composition has strong inhibition and killing effects on dominant bacterial community of intractable chronic periapical periodontitis and especially on gram-negative bacteria, and can be used for treating chronic periapical periodontitis.

An optical imaging device includes a display panel whereon a coordinate detecting area is formed, at least one light source disposed outside the display panel for emitting light to illuminate an object, and a depth sensor installed on a side of the display panel for sensing image data of the object. The image data include a width information corresponding to a distance between the object and the depth sensor in a first direction, and a depth information corresponding to a distance between the object and the depth sensor in a second direction. The optical imaging device further includes a control module coupled to the depth sensor for receiving the image data sensed by the depth sensor and for determining whether to calculate a coordinate value of the object according to the width information and the depth information.

The invention discloses a multiplex RT-PCR (Reverse Transcription-Polymerase Chain Reaction) quick detection primer for H1 and H3 subtype SIVs (Swine Influenza Virus) and North America and Europe PRRSVs (Porcine Reproductive and Respiratory Syndrome Virus). The primer comprises four pairs of PCR primers which independently aim at four types of viruses, wherein four pairs of PCR primers are primers1 to 8 and independently have base sequences of sequence tables SEQ. ID. NO.1 to SEQ. ID. NO.8. Hereby, the inventor also researches a corresponding quick detection method and a kit thereof, and a detectable quantity for a recombinant plasmid standard substance can be lowered to 9.86*10<0>copies / [mu]L. The invention has the characteristics of high specificity, good sensitivity, short time consumption and low cost, provides a quick and convenient tool for detecting swinery mixed infection, lays a solid foundation for clinic quick authentication and detection and laboratory epidemiological investigation, is favorable for pig industry to formulate a disease prevention and control scheme in time, and reduces a swinery death rate and economic loss.

The invention discloses a blood sample treatment method. The blood sample treatment method comprises the following steps: providing a blood sample separation carrier provided with a sample adding cavity, a separation cavity, a sample adding position and a sampling position; a blood sample is added into the sample adding cavity through the sample adding position, the blood sample separation carrier is controlled to rotate at a preset rotating speed in an accelerated mode, and the blood sample in the sample adding cavity enters the separation cavity; the blood sample separation carrier is controlled to rotate at a constant speed at a preset rotating speed for a first preset time, so that a first component and a second component in the blood sample are separated, and the first component and the second component obtained through separation are contained in the separation cavity; controlling the blood sample separation carrier to decelerate and rotate for a second preset time until the blood sample separation carrier stops rotating, so that the first component in the separation cavity is collected in the space, close to the sampling position, of the separation cavity; and the first component separated in the separation cavity is extracted through the sampling position. The blood sample treatment method provided by the invention can reduce the detection dosage and sampling precision requirements of the blood sample.

The invention provides a planting system and a planting method for controlling the temperature of vegetable roots; wherein the system comprises a hydroponic planting nutrient solution pool and a nutrient solution sterilization temperature-control trough; the nutrient solution sterilization temperature-control trough is arranged beside the growing period hydroponic pool, is internally provided with a precise filter, a nutrient solution cooling group, a temperature sensor group and an electric heater heating group and is externally provided with a condensation compression unit that is connectedwith the nutrient solution cooling group; and a ultraviolet sterilization device is arranged above the nutrient solution sterilization temperature-control trough. The method comprises the following steps of: planting the hydroponic vegetable in the planting system for controlling the temperature of the vegetable roots; opening the nutrient solution valves arranged at two sides of the planting pool by the temperature-control planting system; pouring the nutrient solution into the nutrient solution sterilization temperature-control trough; filtering the solution by a precise filter; reducing the temperature when the solution flows by the nutrient solution cooling group subsequently or increasing the temperature by the electric heater heating group so as to lead the temperature of the nutrient solution to be kept at about 18 DEG C in summer and at about 22 DEG C in winter and lead the temperature of the vegetable plant to be reduced or increased, thus leading the vegetables to have the capability of resisting hot or cold weather.

The present invention is applicable to the field of network technology, and provides a dead link detection method and device, comprising: random sampling of web page addresses url under directories or sites according to preset dead link conditions, the dead link conditions including directory dead links link condition and site dead link condition; carry out dead link detection to the url obtained by random sampling, and obtain the detection result; The urls under the above sites are dead links. The invention reduces the amount of detection and solves the problem that the existing dead link detection method is difficult to quickly and effectively detect a large amount of dead link information in the case of a huge number of Internet links, making it difficult for large websites or search engines to find the provided webpages in time There is a dead link problem in the link, which improves the efficiency of detection.

The invention discloses a closed-loop control digital microfluidic system and a control method thereof, and belongs to the field of biochemical detection. According to the invention, the problem of poor stability of real-time monitoring and adjustment of droplet movement during liquid driving of the existing digital micro-fluidic chip is solved. Each electrode plate of each digital microfluidic chip is connected with an alternating-current or direct-current power supply through a wire and a first relay, and a switch control signal end of each first relay is connected with a switch control signal output end of a driving controller; and the driving controller is used for controlling whether an electrode pair opposite to the digital micro-fluidic chip is powered on or not by controlling the opening or closing of the first relay, and the electrode pair is powered on to drive liquid drops. The system and the method are suitable for control of the microfluidic chip.

The invention provides a method for detecting plate piece warping deformation and equipment for realizing the method. The method comprises the steps that a plate piece is conveyed at a constant speed; In the constant-speed conveying process of the plate piece, a top detection assembly located above the plate piece obtains the plate piece warping deformation degree by detecting the distance change between the top detection assembly and the plate piece in the height direction; and whether the plate piece warping deformation is qualified or not is judged according to the warping deformation degree. By means of the method for detecting the plate piece warping deformation, warping deformation automatic detection on the plate piece can be realized, the labor cost is saved, the detection efficiency is improved, the detection precision is improved, the automatic full-detection work of large-batch plate pieces can be realized, the machining consistency and the product quality are improved, and the universality is high.