40results about How to "Sensitive judgment" patented technology

The invention relates to a transformer winding deformation fault diagnosis method based on frequency sweep short circuit characteristics. The transformer winding deformation fault diagnosis method comprises the following steps: 1) measuring frequency sweep short circuit impedance data of a transformer three-phase winding through a testing device under the power failure state of a transformer; 2) obtaining three diversity factor curves of the frequency sweep short circuit impedance data of the three-phase winding measured in step 1); 3) comparing three diversity factor curves DAB, DBC and DCA calculated from step 2) with standard diversity factor curves, diagnosing that the winding has slightly deformation when any one diversity factor curve exceeds attention value curves of the standard diversity factor curves; otherwise diagnosing that the winding has no deformation; and if the diversity factor curves exceed alarm value curves of the standard diversity factor curves, diagnosing that the winding has obvious deformation. The transformer winding deformation fault diagnosis method is accurate and sensitive to diagnose, easy to implement, and strong in field maneuverability and can be widely applied to fault diagnosis of transformer winding.

The invention discloses an ELISA (Enzyme-Linked Immunosorbent Assay) antibody detection kit for distinguishing and diagnosing capripox field virus infection. The indirect ELISA antibody detection kit for distinguishing and diagnosing capripox field virus infection, disclosed by the invention, is internally provided with a coated antigen ELISA antibody detection board and an ELIAS secondary antibody, wherein the coated antigen is a mixture of a recombination capripox virus ORF95 protein and an ORF103 protein. The recombination proteins of ORF95 and ORF103, adopted by the invention, are convenient to prepare and purify in large quantities. The kit disclosed by the invention has a strong specificity, can effectively exclude the interference of the capripox attenuated-vaccine immunity, and specifically detects the capripox field virus infection.

The invention discloses a single winding device for an automatic soft bobbin winder. The single winding device comprises a winder, a variable-amplitude filament guide device, a fixed length control device, a tension adjusting device and a single-chip microcomputer, wherein the winder comprises a winding frame and a groove drum, the variable-amplitude filament guide device comprises a variable-amplitude guide rail, a tension spring, a movable pull rod and an adjustable rotary rod, the fixed length control device comprises an infrared light-operated filament detector, a thread shear, an alarm indicator lamp and a reset button, and the single-chip microcomputer is used for controlling all the devices. The single winding device is simple in structure, reasonable in design and low in cost and noise, pineapple-shaped forming and fixed length and broken filament automatic stopping functions can be conveniently realized in use of the single winding device, high-quality soft winding can be realized, dyeing quality in subsequent procedure and smoothness in rewinding can be improved, and accordingly operating efficiency and economic efficiency of factories can be improved.

The invention discloses a myocardial infarction triple rapid detection kit and a preparation method for the myocardial infarction triple rapid detection kit. The kit is formed by taking novel heart markers, that is, human myeloperoxidase (MPO) and heart fatty acid binding protein (FABP3) as basis, and matching with any of myocardial infarction markers CRP (C reactive protein), cTnI and Lp-PLA2. The kit is characterized by being capable of warning myocardial infarction diseases much earlier compared with the existing gold-label kit, and capable of warning the risk of the whole process before and after the occurrence of myocardial infarction. The kit is composed of a test paper card and a colour comparison card or a colloidal gold quantitative reading meter, wherein an anti-MPO specific antibody, an anti-FABP3 specific antibody and a colloidal gold pad resisting to any of other myocardial infarction markers are labelled on the test paper card simultaneously; and novel myocardial infarction markers are detected simultaneously by a colloidal gold immunochromatography technology at the first time, and the kit has the characteristics of being capable of realizing early warning and whole-course monitoring, simple and convenient to operate, rapid, suitable for field detection, economical and practical, and the like.

The invention discloses a current-based intelligent compensation control method used on polishing and grinding equipment. The method comprises the following steps: pre-setting the range of the working current value to be from A to B, wherein A is the minimum and B is the maximum; detecting the actual working current value C in real time; and comparing the actual working current value with the pre-set working current value: if the actual working current value is within the pre-set range of working current value from A to B, dispensing with compensation, if the actual working current value is less than the minimum A, increasing the actual working current value C by controlling a grinding head of the polishing and grinding equipment to feed, when the increased actual working current value C is within the pre-set range of working current value from A to B, dispensing with compensation, and if the actual working current value is more than the maximum current value B, decreasing the actual working current value C by controlling the grinding head of the polishing and grinding equipment to withdraw, and when the decreased actual working current value C is within the pre-set range of working current value from A to B, dispensing with compensation. The method disclosed by the invention has the characteristic of artificial intelligence and has good automatic compensation effect.

The invention discloses a method for realizing short-cut nitrification and denitrification through online monitoring and controlling SBR (Selective Beacon Radar) aeration duration on basis of HPR (High Performance Routing), comprising the steps that: an automatic titration admeasuring apparatus is connected with an SBR to monitor the HPR in a reactor in real time; meanwhile, a computer compares the HPR at the current moment and the HPR before the time Delta t, and discontinuously pushes ahead along with the real-time measurement of the HPR, and gives a command to control an aeration device to stop the aeration when the condition of the Delta t judging method is satisfied, wherein the Delta t judging method is described as follows: a fixed value m is set, when HPR (t-Delta t)-HPR (t) is greater than or equal to m, the stop condition of the aeration is satisfied and the aeration is stopped at the moment t; the aeration duration is controlled in each period of the SBR in real time and the aeration is stopped in time; after the operation for a plurality of periods, an SBR sewage treatment system realizes the short-cut nitrification and denitrification biological nitrogen removal. The invention provides a novel method for realizing the short-cut nitrification and denitrification biological nitrogen removal, and can be used for the dynamic research of the nitrification and denitrification biological nitrogen removal process.

The invention provides a fault direction detection method and device, a relay and a computer readable storage medium. The fault direction detection method comprises the steps that when relay protection is started, the fault voltage data and the fault current data of a fault line are synchronously acquired; a line mode voltage fault component is determined according to the fault voltage data, and a line mode current fault component is determined according to the fault current data; correlation calculation is performed on the line mode voltage fault component and the line mode current fault component so as to obtain the characteristic correlation coefficient; and the fault direction of the line fault can be determined according to the characteristic correlation coefficient. With application of the technical scheme, the fault direction can be sensitively judged when the fault occurs near the zero crossing point of the voltage, and the motion speed is within a few milliseconds without the influence of the limited frequency band of the capacitive voltage transformer commonly used in the high voltage power transmission line so that the reliability of fault direction detection can be enhanced.

The invention relates to the field of audio signal processing, in particular to an echo time delay detection method. An audio receiving loudspeaker and a microphone are provided. The echo time delay detection method comprises the following steps: S1, segmentally processing a receiving signal acquired by the audio receiving loudspeaker to obtain a plurality of buffer queues Xi; S2, transforming a transmitting signal to be transmitted into a plurality of processing units Yi according to the same segments by the microphone; S3, implementing similarity calculation on the processing units Yi and the plurality of buffer queues Xi to obtain a maximum value covmax; and S4, performing calculation on each frame of data acquired by the microphone with a Gaussian model to obtain a maximum value f(max)of f(x), and comparing with covmax to obtain an echo time delay estimated value. According to the echo time delay detection method disclosed by the invention, an echo manner is judged comprehensivelyby the Gaussian model and a covariance, so that frequency spectrums with relatively large differences can be judged accurately; voice frequency spectrums with relatively low energy can be judged sensitively; and particularly a more remarkable effect is achieved specific to the echo problem of an interphone.

The invention relates to an intelligent elevator brake control system. The intelligent elevator brake control system comprises a controller and a detection assembly. The controller is in signal connection with the detection assembly. The detection assembly comprises travel sensors and stress sensors. The travel sensors comprise the left travel sensor and the right travel sensor. The left travel sensor and the right travel sensor are arranged on a left brake body and a right brake body correspondingly and are both in signal connection with the controller. The stress sensors comprise the left stress sensor and the right stress sensor. The left stress sensor and the right stress sensor are arranged on the two sides of the position, in contact with a left brake pad and a right brake pad, on anelevator host correspondingly and are both in signal connection with the controller. The intelligent elevator brake control system is sensitive in detection, capable of achieving automatic analysis and judgment and high in response speed.

The invention discloses a method for determining fatty aldehyde in drainage oil. The invention uses the specificity of the large amounts of fatty aldehyde contained in the waste oil; the waste oil is subjected to pretreatment and derivatization reaction with 2,4-dinitrophenylhydrazine to generate different 2,4-dinitrophenylhydrazone; and high performance liquid chromatography is used for detection. The method realizes determination of aldehydes in the waste oil (drainage oil) and at the same time can carry out efficient, simple and sensitive judgment on whether a commercial edible oil sample is laced with drainage oil.

The invention discloses a power distribution network overcurrent protection method based on deep reinforcement learning. The method comprises the steps: starting protection, and judging whether current quick-break protection in a cycle acts or not: determining that constant value optimization does not need to be performed if the current quick-break protection does not act; if the current quick-break protection action is performed, carrying out constant value optimization; determining an optimal constant value according to an MA-DDPG algorithm after training is completed; judging a size relationship between a current effective value and the optimal constant value; if the current effective value is greater than the optimal constant value, making a protection outlet act; if the current effective value is less than or equal to the optimal constant value, judging the size relationship between the current and a starting value; if the current is less than the starting value, returning protection; otherwise, returning to a step of judging whether the current quick-break protection in one cycle acts or not and carrying out circulation. In the invention, a content of deep reinforcement learning is applied to the field of relay protection for the first time, and an artificial intelligence technology and a traditional relay protection technology are combined to improve protection efficiency.

The invention discloses a variance-based zero-sequence over-current inter-turn protection method for graded controllable reactors. The method comprises the steps of (1) calculating a variance delta U0 between the zero-sequence voltage of the current cycle of a reactor head end and the zero-sequence voltage of the previous cycle thereof; (2) calculating the variance delta I0 between the zero-sequence current of the current cycle of a control winding side and the zero-sequence current of the previous cycle thereof; (3) on the condition that the variance delta I0 of the zero-sequence current is larger than a zero-sequence over-current threshold delta Iset and the variance delta U0 of the zero-sequence voltage is smaller than a zero-sequence voltage blocking threshold delta Uset, concluding the occurrence of an in-region grounding fault or an inter-turn fault and realizing the inter-turn protection. According to the technical scheme of the invention, on the basis of the zero-sequence current variance on the same control winding side, the amplitude of the line-side zero-sequence voltage variance is compared to judge the inter-turn fault of a reactor load on the control winding side of the reactor. In this way, during the occurrence of an inter-turn fault on the control winding side of a graded controllable high-voltage shunt reactor, the reactor is prevented from being affected by the influence of the incomplete-phase operation and other operating states based on the zero-sequence over-current protection means. Meanwhile, the method is simple and concise in criterion, sensitive in protection and high in reliability.

The invention discloses a superconducting magnet quench protection circuit and a superconducting magnet with the same. The superconducting magnet quench protection circuit comprises a diode, an insulated-gate bipolar transistor and an energy leakage resistor, and the diode is serially connected with the insulated-gate bipolar transistor and then is parallelly connected with the energy leakage resistor; and the superconducting magnet comprises a body of the superconducting magnet, and is assembled with the superconducting magnet quench protection circuit, a quench detector, a current sensor, a short circuiter, and a current injection conductor. The protection circuit provides active quench protection for the superconducting magnet, and has sensitive quench judgment, and most of heat produced during the quench is dissipated on the energy leakage resistor outside the superconducting magnet so as to prevent the quick change of heat stress produced by a heater from causing the damage to the mechanical property of a superconductor, and prolong the service life of a superconducting line. The heat load of a cooling system produced during the quench is also greatly reduced, the time for returning to a superconducting state through the re-cooling after the quench is shortened, and the work efficiency of the whole machine is improved.

The invention provides a color developing agent composition and application thereof as well as a method for detecting nitrite in a sample. By using the color developing agent composition or the detecting method provided by the invention, quick analysis of the nitrite in the sample, in particular of milk or a milk product can be realized by comparing the color change of the sample to be detected; the method is simple and convenient in operation, and is suitable for quickly measuring or monitoring the content of the nitrite in products during assembly line production.

The invention relates to a transformer winding deformation fault diagnosis method based on frequency sweep short circuit characteristics. The transformer winding deformation fault diagnosis method comprises the following steps: 1) measuring frequency sweep short circuit impedance data of a transformer three-phase winding through a testing device under the power failure state of a transformer; 2) obtaining three diversity factor curves of the frequency sweep short circuit impedance data of the three-phase winding measured in step 1); 3) comparing three diversity factor curves DAB, DBC and DCA calculated from step 2) with standard diversity factor curves, diagnosing that the winding has slightly deformation when any one diversity factor curve exceeds attention value curves of the standard diversity factor curves; otherwise diagnosing that the winding has no deformation; and if the diversity factor curves exceed alarm value curves of the standard diversity factor curves, diagnosing that the winding has obvious deformation. The transformer winding deformation fault diagnosis method is accurate and sensitive to diagnose, easy to implement, and strong in field maneuverability and can be widely applied to fault diagnosis of transformer winding.

The invention relates to use of serum GP73 concentration in liver tissue inflammatory activity detection, and provides a liver tissue inflammatory activity detection kit. The kit utilizes the GP73 concentration in serum to realize detection and grading of subjects' liver tissue inflammatory activity, and is suitable for patients suffering moderate inflammation necrosis or above and having normal ALT, and viral hepatitis patients adopting antiviral therapy.

The invention relates to L-band RF (Radio Frequency) system output port protection equipment which comprises an L-band RF system output port protection circuit arranged in a metal sealed cavity, wherein the circuit comprises a coupler, a detection comparison circuit and a digital control feedback circuit; the detection comparison circuit comprises a forward detection circuit, a reverse detection circuit, a tuning circuit and a comparator; the data feedback circuit comprises a data processing circuit, a VSWR (Voltage Standing Wave Ratio) indication circuit and a protection judgment circuit; after the equipment is connected with an RF system final amplifier, an L-band incident wave is separated from a reflected wave in proportion by utilizing the coupler, the separated reflection quantity and incidence quantity are compared by the detection comparison circuit, then a logic level is output, and connected with the digital control feedback circuit, and port matching is judged by data processing, so that when a port is mismatched, the protection circuit can timely close a corresponding sending signal, and a protection function is exerted; and the whole equipment has the characteristics that the equipment is small, exquisite, light, and sensitive in indication and judgment.

The invention relates to a blood hypercoagulation or venous thrombosis risk gene polymorphism detection primer group, a kit, a detection method and application, and belongs to the technical field of molecular biology. By designing the specific primer, a method and a risk evaluation system for detecting human venous thrombosis susceptibility based on Sanger sequencing are established, the primer can rapidly and qualitatively detect the blood hypercoagulation or venous thrombosis risk gene polymorphism, and the sensitivity of the human venous thrombosis risk gene can be greatly improved through one-time PCR amplification. The gene type of the to-be-detected site can be quickly and sensitively judged according to a sequencing result, so that the blood hypercoagulable or venous thrombosis risk gene can be accurately typed; the detection method provided by the invention is accurate and comprehensive in detection result of the blood hypercoagulation or venous thrombosis risk; the evaluation system is complete and can comprehensively detect the potential risk of the detected object, and the defect that the potential risk of the detected object cannot be comprehensively reflected due to the fact that other risk genes are ignored when a single gene or a small number of combined genes are detected is avoided.

The invention discloses a two-finger translation mechanical arm which comprises a palm base, a steering engine, transmission gears, translation racks, a left finger and a right finger, wherein the steering engine is arranged above the palm base; an output shaft of the steering engine is respectively meshed with the translation racks by the two pairs of transmission gears, and the translation racks are respectively connected with the left finger and the right finger; when the steering engine rotates forward, the left finger and the right finger are separated from each other along with the translation racks; when the steering engine rotates backward, the left finger and the right finger are closed together along with the translation racks. The left finger and the right finger are respectively and internally provided with a reset torsion spring and a small microswitch; when a workpiece is clamped by the mechanical arm, the microswitches are touched, and information is fed back to a control system. The two-finger translation mechanical arm is simple in structure, high in sensitivity and convenient to install. When the workpiece is clamped by the left finger and the right finger, the microswitches arranged in the fingers are connected; the microswitches are disconnected in time when the workpiece is loosened; the motion state of the translation mechanical arm is fed back into the control system in time, so that the control system can sensitively judge the working state of the mechanical arm, and real-time control performance of the two-finger translation mechanical arm can be guaranteed.

The invention discloses a human bocavirus type 1 antibody indirect ELISA diagnosis kit. The kit comprises an antigen coated ELISA antibody detection plate and an enzyme-labeled secondary antibody, the antigen coated on the antibody detection plate is the truncated protein (VP2N) of 210 amino acids at the N terminal of a human bocavirus type 1 structure protein VP2, and the enzyme-labeled secondary antibody is a sheep anti-human enzyme-labeled secondary antibody. The amino acid sequence of the truncated protein VP2N is represented by SEQ ID NO.1, and the coding sequence of the truncated protein VP2N is represented by SEQ ID NO.2. The VP2N recombinant protein adopted in the invention is convenient for massive preparation and purification. The kit can be used for detecting a human bocavirus type infected antibody or diagnosing human bocavirus type infection, and has the advantages of simplicity and fastness in operation, short time, low cost, extreme suitableness for detecting a large amount of individual serum samples, and very high practicality.

The invention discloses a household anti-theft alarm system, which comprises theft induction devices installed on each window, and is characterized in that the theft induction device comprises a pressure sensor, a single-chip microcomputer chip and a ZigBee network module; and an output end of the pressure sensor is connected with an input end of the single-chip microcomputer chip, and an output end of the single-chip microcomputer chip is connected with the ZigBee network module. The ZigBee network module is connected with a home network through wireless communication, the home network is wirelessly communicated with a cloud server, and the cloud server uploads received information to a user mobile terminal and a public security service system. The household anti-theft alarm system further comprises an alarm device and an image monitoring module, wherein the alarm device and the image monitoring module are connected with the home network through wireless communication. The theft induction device installed on the window in the invention is simple in structure and sensitive in judgment, and can well play a role of theft preventing and alarming through the home network and monitoring, thereby ensuring the safety household properties.

The invention provides a superconducting magnet monitor. The superconducting magnet monitor comprises a parameter acquisition module connected with an address book of a superconducting magnet system and used for acquiring operating parameters of the superconducting magnet system; the signal output end of the parameter acquisition module is in communication connection with the signal input end of adata conversion module, the signal output end of the data conversion module is in communication connection with the signal input end of a processor module, and the signal output end of the processormodule is in communication connection with the signal input end of the display module. The superconducting magnet monitor provided by the invention has the advantages that the operation data of the superconducting magnet monitor is monitored in real time to make real-time, accurate, sensitive and reliable determination for the state of the system, when the abnormality of the system is monitored, the abnormality can be sent to the display module in time so as to remind a user, so that the monitoring and alarm of sudden accidents of the superconducting magnet system are achieved, and the simpleprocessing operation can be performed.

The invention relates to L-band RF (Radio Frequency) system output port protection equipment which comprises an L-band RF system output port protection circuit arranged in a metal sealed cavity, wherein the circuit comprises a coupler, a detection comparison circuit and a digital control feedback circuit; the detection comparison circuit comprises a forward detection circuit, a reverse detection circuit, a tuning circuit and a comparator; the data feedback circuit comprises a data processing circuit, a VSWR (Voltage Standing Wave Ratio) indication circuit and a protection judgment circuit; after the equipment is connected with an RF system final amplifier, an L-band incident wave is separated from a reflected wave in proportion by utilizing the coupler, the separated reflection quantity and incidence quantity are compared by the detection comparison circuit, then a logic level is output, and connected with the digital control feedback circuit, and port matching is judged by data processing, so that when a port is mismatched, the protection circuit can timely close a corresponding sending signal, and a protection function is exerted; and the whole equipment has the characteristics that the equipment is small, exquisite, light, and sensitive in indication and judgment.

The invention discloses a distribution network overcurrent protection method based on deep reinforcement learning, which includes the steps of: starting the protection, and judging whether the current quick-break protection operates within a cycle: if the current quick-break protection does not operate, it is not necessary to optimize the fixed value; if When the current quick-break protection operates, optimize the setting value; determine the optimal setting value according to the trained MA-DDPG algorithm; judge the relationship between the current effective value and the optimal setting value: if the current constant current effective value is greater than the optimal setting value , then the protection outlet will act; if the current effective value of the current is less than or equal to the optimal setting value, then judge the relationship between the current and the starting value: if the current is less than the starting value, the protection will return; otherwise, it will return to judge whether the current quick-break protection operates within one cycle Steps are cycled. The present invention applies the content of deep reinforcement learning to the field of relay protection for the first time, and combines artificial intelligence technology with traditional relay protection technology to improve the efficiency of protection.

The invention involves the use of serum GP73 concentration for the use of hepatitis tissue inflammatory activity detection. It provides a test kit for hepatitis tissue inflammation activity.Patients with moderate inflammation can be applied to patients with moderate inflammation and normal ALT, as well as patients with antiviral hepatitis.

The invention discloses a video foreground image extraction method and device, relates to the field of computer vision, and is used for solving the problem that image segmentation is difficult to perform by using a Gaussian Mixture Model (GMM) when the image foreground is similar to the background grayscale of the image. The method comprises the steps that foreground pixel points are extracted from the present frame of image according to the GMM so that a first pixel point set is obtained; the background reference image of a video stream is determined, and the image is transformed to an HSV color space from an RGB color space so that a background HSV image is obtained; the present frame of image is transformed to the HSV color space from the RGB color space so that the present frame of HSV image is obtained; the Euclidean distance of the HSV value of the pixel points of the same coordinates in the present frame of HSV image and the background HSV image on an HS plane is calculated, and a set formed by the pixel points locating in the same coordinates in the present frame of image acts as a second pixel point set if the Euclidean distance is greater than a first threshold; and the foreground image is obtained according to the first pixel point set and the second pixel point set. The video foreground image extraction method and device are applied to foreground image extraction.

The invention discloses a human bocavirus type 1 antibody indirect ELISA diagnosis kit. The kit comprises an antigen coated ELISA antibody detection plate and an enzyme-labeled secondary antibody, the antigen coated on the antibody detection plate is the truncated protein (VP2N) of 210 amino acids at the N terminal of a human bocavirus type 1 structure protein VP2, and the enzyme-labeled secondary antibody is a sheep anti-human enzyme-labeled secondary antibody. The amino acid sequence of the truncated protein VP2N is represented by SEQ ID NO.1, and the coding sequence of the truncated protein VP2N is represented by SEQ ID NO.2. The VP2N recombinant protein adopted in the invention is convenient for massive preparation and purification. The kit can be used for detecting a human bocavirus type infected antibody or diagnosing human bocavirus type infection, and has the advantages of simplicity and fastness in operation, short time, low cost, extreme suitableness for detecting a large amount of individual serum samples, and very high practicality.

The invention discloses a variance-based zero-sequence over-current inter-turn protection method for graded controllable reactors. The method comprises the steps of (1) calculating a variance delta U0 between the zero-sequence voltage of the current cycle of a reactor head end and the zero-sequence voltage of the previous cycle thereof; (2) calculating the variance delta I0 between the zero-sequence current of the current cycle of a control winding side and the zero-sequence current of the previous cycle thereof; (3) on the condition that the variance delta I0 of the zero-sequence current is larger than a zero-sequence over-current threshold delta Iset and the variance delta U0 of the zero-sequence voltage is smaller than a zero-sequence voltage blocking threshold delta Uset, concluding the occurrence of an in-region grounding fault or an inter-turn fault and realizing the inter-turn protection. According to the technical scheme of the invention, on the basis of the zero-sequence current variance on the same control winding side, the amplitude of the line-side zero-sequence voltage variance is compared to judge the inter-turn fault of a reactor load on the control winding side of the reactor. In this way, during the occurrence of an inter-turn fault on the control winding side of a graded controllable high-voltage shunt reactor, the reactor is prevented from being affected by the influence of the incomplete-phase operation and other operating states based on the zero-sequence over-current protection means. Meanwhile, the method is simple and concise in criterion, sensitive in protection and high in reliability.