188results about How to "Judgment method is simple" patented technology

The invention discloses an intelligent management method for a photovoltaic module, and belongs to the field of operating maintenance of photovoltaic power stations. The intelligent management method for the photovoltaic module comprises the steps of (1) collecting external information of the photovoltaic module; (2) obtaining an actual I-V characteristic curve according to the external information; (3) judging whether the actual I-V characteristic curve meets a theoretical I-V characteristic curve or not, further analyzing abnormal types by utilizing a natural law principle if a set error value is exceeded, and otherwise, repeating the above steps; (4) sending warning messages if the abnormal types are judged to be faults, executing cleaning operation if the abnormal types are judged to be overmuch dirt retention, and carrying out no actions if the abnormal types are judged to be shadow covering. The invention further discloses an intelligent management system of the photovoltaic module. According to the intelligent management method and system for the photovoltaic module, real-time monitoring and automatic cleaning are carried out on the faults, cleanliness and the like of the photovoltaic module based on the natural law and the I-V characteristic curve of crystalline silicon, and safe, efficient, high-quality, intelligent, simple and convenient operation management of the photovoltaic power station is achieved.

The invention discloses a judgement and protection method for an open phase of a frequency-conversion air conditioner compressor, which comprises the following steps of: firstly, measuring a quiescent current value of a frequency converter, and setting a current threshold value of the open phase of the compressor according to the quiescent current value; secondly, reading a current value sampled at random during the operation of the frequency converter, and calculating current values I1, I2 and I3 of three phases of the compressor in a drive circuit mode utilized by the frequency converter according to the current value; and thirdly, comparing the current values I1, I2 and I3 calculated in the second step with the current threshold value; if any one of the I1, I2 and I3 is lower than the current threshold value, the open phase of the compressor is judged, and the output of the frequency converter is stopped to indicate the open phase fault of the compressor; and otherwise, returning to the second step. The method cannot increase the cost of the air conditioner, and can reduce the open phase operation fault of the air conditioner.

The invention discloses a system for monitoring gob stress in real time and an overlying strata breakage judgment method. According to the system, a hydraulic sleeper is buried in each stress measuring point and is connected with a pressure sensor; the pressure sensor is connected with a wireless sensing transmitting module; a gob stress signal is transmitted through the wireless sensing transmitting module; a wireless receiving module is arranged in a mining roadway, can simultaneously receive multi-path stress radio signals transmitted in a gob and is connected with an electro-optic conversion module; the electro-optic conversion module converts multi-path stress electric signals into optical signals and transmits the optical signals to the ground through an optical fiber; an optical fiber signal is converted into an electric signal through the electro-optic conversion module, and the electric signal is connected with a monitoring host; the gob stress data are controlled, stored and displayed on line in real time on the monitoring host through configuration control software; and after a gob stress value obtained through monitoring is compared with a theoretically calculated stress value, an overlying strata breakage position above the stress measuring points is judged.

The invention relates to an ADS-B (automatic dependent surveillance - broadcast) autonomous anti-false object spoofing method. The ADS-B is based on a GNSS (global navigation satellite system), ground-air data links and other advanced techniques, and is a novel ground-air surveillance system which is being globally popularized by ICAO (international civil aviation organization). Because of the opening and sharing characteristics of working frequency, signal format and communication protocol of the ADS-B, the application of the system will be easily subject to artificial malicious spoofing and attack by wireless amateurs or illegal persons, a false target is formed, the management of ATC (air traffic control) areas is disordered, the normal aviation flight order is seriously disturbed, and the severe hidden hazards on safety are caused. The system comprises an ADS-B ground base station host, an anti-false target processing auxiliary machine, an BD/GPS (Beidou global positioning system) antenna, an ADS-B receiving antenna, an anti-false target direction measuring antenna, a PC (personal computer) (optional), an BD/GPS satellite, and an aircraft.

The invention relates to a control method for guaranteeing the safe operation of a wind turbine. The method comprises the following steps of: (1) generating pulse signals by a master control system in real time and sending the signals to a pulse detector; (2) detecting the pulse signals sent by the master control system by the pulse detector in real time, and executing a step (3) when a detection result of the pulse detector has an abnormality, or else circularly executing the step (1) and the step (2); (3) outputting contact signals to a safety system by the pulse detector; (4) disconnecting a safety chain after the safety system detects the contact signals and sending a control command to a variable pitch system; and (5) controlling the wind turbine to be shut down by the variable pitch system after receiving the control command. The method has reasonable design, judges whether the master control system has a failure or not through detecting the pulse signals of the master control system in real time and can control the wind turbine to be safely shut down in real time after the failure occurs, thereby effectively protecting the wind turbine equipment and guaranteeing the safety operation of the wind turbine.

The invention discloses a touch type liquid crystal display, a touch method, an array substrate and a manufacture method thereof, wherein the touch type liquid crystal display comprises a color film substrate, the array substrate and a liquid crystal molecule layer arranged between the color film substrate and the array substrate; a grid line and a data line are formed on the array substrate; and a pixel electrode and a first thin film transistor are formed in a pixel region limited by the grid line and the data line. The array substrate also comprises a second thin film transistor, a signal line, a voltage acquisition circuit and an external integrated circuit, wherein the second thin film transistor is connected with the first thin film transistor and used for acquiring data voltage and black frame voltage of the current pixel region at intervals; the signal line is connected with the second thin film transistor and used for outputting the data voltage and the black frame voltage, and the signal line is arranged parallel to the data line; the voltage acquisition circuit is connected with the signal line and used for acquiring the black frame voltage from the signal line; and the external integrated circuit is used for acquiring the black frame voltage from the voltage acquisition circuit and acquiring a touch position according to the change of the black frame voltage.

The invention provides a method and a device for preventing a vehicle from colliding with a road edge. The method comprises the following steps: S1, collecting distance signals for reflecting the distance between the vehicle and the road edge, wherein the distance signals are generated by at least two distance sensors arranged at the same side of the vehicle; acquiring vehicle speed signals generated by a vehicle speed sensor; S2, judging whether the vehicle has a tendency of colliding with the road edge or not according to the distance signals, if yes, executing the step 3; if not, returning to the step 1; S3, calculating estimated time that the vehicle collides with the road edge according to the vehicle speed signals; S4, judging whether the estimated time is greater than a threshold value or not, and if yes, giving an alarm; if not, performing aided driving intervention while the alarm is given. The method and the device provided by the invention aim to prevent the vehicle from colliding with the road edge when the vehicle runs on a left-most or right-most lane.

The invention provides a stability judging method of a grid-connected photovoltaic power station. The method comprises a procedure of establishing a stability judging criterion which comprises the following steps: photovoltaic power system components formation and topology structure analysis, photovoltaic cell array P-U power output characteristic analysis and a mathematical expression thereof, DC-AC converter control mode principle analysis and a mathematical expression thereof, and obtainment of a control mode of the grid-connected photovoltaic power station in constant power and a stability criteria under an MPPT power control mode. Voltage and power data at an outlet of a photovoltaic array are measured, and combined with the obtained criteria in the above steps, the stability of the grid-connected photovoltaic power station is obtained. According to the method, only through the measured voltage and power data at the outlet of the photovoltaic array, the stability of the grid-connected photovoltaic power station can be fully judged. The method has the advantages of simpleness, convenient realization of stability measurement and convenient engineering application. A foundation is provided for a control scheme of the grid-connected photovoltaic power station.

The invention discloses a method of simulating a multi-peak I-V curve of series photovoltaic modules. The method comprises the following steps: a, obtaining parameter information of each photovoltaic module in a photovoltaic string under the standard condition; b, figuring up to obtain parameters of each photovoltaic module in an actual environment; c, arranging the actual short circuit current of each photovoltaic module according to the magnitude; d, summing actual open circuit voltage of each module so as to obtain the open circuit voltage of the photovoltaic string; e, simulating each photovoltaic module in sequence so as to obtain an I-V characteristic curve and a simulation length of each module in the photovoltaic string, thereby figuring up to obtain a total simulation length of the photovoltaic string; f, carrying out data completion on the actual short circuit current of each photovoltaic module by adopting a simulation step size unification method; g, selecting a maximum current value, which corresponds to each voltage point, as photovoltaic string output current of the point so as to obtain the multi-peak I-V curve when the photovoltaic string is shielded by a shade. The method does not adopt an iteration method, and the calculated amount of simulation is small; furthermore, judgment of the current magnitude is simplified through the simulation step size unification method.

The embodiment of the invention discloses a user request detection method and device, a computer device and a storage medium, and the method comprises the following steps of obtaining a user request sent by a terminal, the user request comprising terminal equipment data; inputting the equipment data into a plurality of anomaly detection models to obtain a plurality of detection results for judgingwhether the user request is abnormal or not, the anomaly detection models being detection models which are trained to a convergence state by adopting a sample feature set in advance and are used forcarrying out security classification on the terminal through the feature set; and judging the detection result by adopting a preset judgment method so as to determine whether the user request is abnormal or not. The method is simple in judgment method, can identify the diversified abnormal scenes, and can cover more and more complex conditions along with increase of the sample size. In addition, adetection result can be obtained more comprehensively, and the accuracy of anomaly detection is improved.

The invention relates to a plant genomes deoxyribonucleic acid (DNA) quick extraction device and a testing method thereof. The plant genomes DNA quick extraction device is composed of a plurality of injectors with sponges on the bottoms, extraction pillars, and a plurality of centrifugal tubes, wherein the upper end portion of each of the extraction pillars can be connected with an injection port of each of the injectors in a sealing mode, the lower end portion of each of the extraction pillars can be connected with each of the centrifugal tubes, a loading seal cover is connected on the end portion of each of the extraction pillars, the loading seal cover is loaded with a silica film and is embedded in the inner side of the lower end portion of each of the extraction pillars in a clamping mode, and a through hole is formed in the center of the loading seal cover. According to the plant genomes DNA quick extraction device and the testing method thereof, compared with the prior art, large instruments of a centrifugal machine and the like are replaced by an air pressure method, the silica film is used for combining nucleic acid molecules, the plant genomes DNA quick extraction device is simple and effective, an extraction process is simple and convenient without any dependency of valuable instruments, testing time is short, the testing method is high in sensitivity, and the problem of quick testing of transgenetic products on site is resolved.

The invention relates to the method for processing the multi-media signal. The method uses the principle of the pseudo color format image displaying, the service condition of the colors in the image as well as the redundancy existed in the colors. With a lot of information being embedded in the image, meanwhile it is ensured that any distortion will not appear in the image with the information being embedded. The invention is suitable to the application occasion in medicine and military affairs that requires the image with the information being hided without any distortion appearing.

The invention provides an automatic monitoring and attracting device for termites. The automatic monitoring and attracting device comprises an outer layer and an inner layer, wherein the inner layer can be pulled out from the outer layer, the surface walls of the outer layer and the inner layer are respectively provided with holes and gaps for the termites to enter, the outer layer is provided with an openable outer cover, the inner layer is provided with an inner cover, a through hole passes through the outer cover and the inner cover to directly reach the inner layer, one end of an axes strip is near the through hole or enters the through hole, the other end of the axes strip directly or indirectly maintains the fixation state with one end of an attracting strip, one end of a spring in the deformation state is fixed with the inner cover, the other end of the spring is directly or indirectly fixed with the axes strip, when the attracting strip fractures, the elasticity of the spring is received, the axes strip penetrates out from the through hole. The invention provides the automatic monitoring and attracting device for the termites, so whether the termites exist in the region or not can be more conveniently judged, and simultaneously, the attracting strip can be more conveniently replaced into a medicine strip.

The invention discloses a railway center line measuring and setting method based on a reference ellipsoidal surface. The railway center line measuring and setting method comprises the following steps:S1, determining starting point information, end point information and intersection point information of a railway line; S2, calculating curve comprehensive elements by utilizing a geometric analysismethod; S3, calculating mileage of each main point of the curve according to the comprehensive elements of the curve; S4, comparing the mileage of each measuring point with the numerical value of themileage of each main point of the curve, and determining a line segment to which each measuring point belongs; S5, calculating ellipsoid coordinates of each measuring point; and S6, according to the ellipsoid coordinates of all the measuring points, conducting railway center line measuring and setting. By adopting the technical scheme provided by the invention, the longitude and latitude of each point of the railway midline on the reference ellipsoid can be directly used for measurement and setting, so that the measurement and calculation result has no projection deformation or the deformationis minimized. And results on various projection planes can be obtained by referring to data obtained by calculation on the ellipsoidal surface according to various projection rules, so that the calculation data has reusability and universality.

The invention provides a reset displaying device, a reset displaying method and cooking heating equipment. The reset displaying device comprises a control module and a display module, wherein the control module is connected to the display module, and is used for sending display state information to the display module according to a preset time interval and receiving state feedback information sent by the display module, the display module is used for displaying the display state information sent by the control module, collecting state feedback information and sending the collected state feedback information to the control module, the control module is also used for judging whether the display module normally works or not according to the receiving state of the state feedback information, and when the judgment result is no, sending a reset signal with the current display state information to the display module so as to enable the display module to be reset according to the reset signal and to be started, and displaying according to the current display state information at the same time. When the display module of the cooking heating equipment has a fault, the reset time of the display module is shortened, and information needed to be currently displayed is fast recovered, so that the use experience of a user is effectively improved.

Provided is a method for judging magnetic pole polarity of a motor rotor. Pulsating high frequency voltage signals are injected into a direct axis, high frequency current response values of the directaxis and a quadrature axis are obtained; according to the response currents of the direct axis and quadrature axis, a first direct axis high frequency current corresponding to a phase shown in the description and a second direct axis high frequency current corresponding to a phase shown in the description are calculated; the magnetic pole polarity of the motor rotor is judged by comparing absolute values of the first direct axis high frequency current and second direct axis high frequency current. According to the method, only the pulsating high frequency voltage signals are injected into thedirect axis, an initial estimated value of the rotor position is obtained through calculation, and it is judged whether the initial estimated value is revised or not. The method is compared with theprior art, multiple injection voltages are not needed to acquire the corresponding parameters, the calculation method is simple, and the magnetic pole polarity of the motor rotor can be quickly and accurately obtained.

The invention discloses a method for implementing traversing of stream control transmission protocol message to network address translation equipment. The method comprises the following steps of: A, increasing a UDP (user datagram protocol) encapsulation/de-encapsulation layer at a terminal; B, encapsulating the message by the UDP encapsulation/de-encapsulation layer, and forwarding the message when the message has a UDP message header; C, forwarding the SCTP message with the UDP message header according to the UDP message by the NAT equipment (network address translation equipment); and D, judging whether the reaching message is the encapsulated SCTP message by the terminal, if the reaching message is not the encapsulated SCTP message, directly receiving the message according to a UDP message processing method; and if the reaching message is the encapsulated SCTP message, de-encapsulating the message, and then receiving the message according to an SCTP message processing method. The method can realize the traversing of the SCTP message to the NAT without modifying or upgrading the conventional NAT equipment so that the SCTP is developed and applied in the conventional IPv4 network system.

The invention belongs to the special tool machining detection design technology field and discloses a special device for detecting a VL-type universal joint inner star wheel raceway pitch diameter. The device comprises a foundation part, a fixed steel ball part, a movable steel ball part and a pitch diameter proofing block used for setting a reading reference of an indicating gauge, wherein the three parts are arranged in a 180 DEG mode, a fixed steel ball of the fixed steel ball part is in matching with a raceway of an inner star wheel, a movable ball seat of the movable steel ball part is internally provided with a movable shaft, a front end of the moveable shaft is provided with a movable steel ball, the movable steel ball is matched in the corresponding raceway of the inner star wheel in an optimal matching state by the movable shaft through utilizing a compression spring, and the indicating gauge contacting with the movable shaft displays a measurement value. The invention further discloses a pitch diameter detection principle and a pitch diameter detection method. According to the device and the method, a three-coordinate instrument in a lab is innovatively changed into a special detection tool for a production filed, the measurement and determination method is simple, the detection speed is fast, and skill requirements for detectors are low.

The invention relates to a method for transformer excitation surge current latching. Compared with the conventional latching method, the second harmonic single-phase latching principle is adopted, the method solves the problem that the latching time is too long when the regional external fault of an air-drop fault transformer is converted into a regional internal fault of heterogeneous phase in the conventional latching scheme and the problem that the fault cannot be quickly cut off, the speed of protection action is greatly improved, and safe operation of the transformer is ensured; meanwhile, under the condition that the protection is in normal surge current, latching protection can be reliably performed, and error operation of current differential protection is prevented; and the implementation of the method does not raise higher requirement for the conventional protective platform, the implementation threshold is low, and the method is convenient for popularization and use.

The invention provides a random texture anti-counterfeiting mark, which comprises a carrier and a plurality of texture particles randomly distributed on a bearing surface. A non-contact surface of each texture particle comprises at least two visual color parts. Each visual color part presents respective visual color, so that at least one inclination angle exists, overall visual color formed by observing the plurality of texture particles at the inclination angle and overall visual color formed by observing the plurality of texture particles in the vertical direction vertical to the bearing surface have human-eye-recognizable visual color difference; and specific identification characteristics of the texture particles in the random texture anti-counterfeiting mark can be identified under the condition of not using an auxiliary tool, so that public participation is improved greatly. The invention also provides an anti-counterfeiting system adopting the random texture anti-counterfeiting mark, the texture particles for the anti-counterfeiting mark and a use method for the anti-counterfeiting mark; and same beneficial technical effects are obtained.