64results about How to "Will not misjudge" patented technology

The invention provides a method for preventing an HttpFlood attack. The method includes the steps that a firewall generates and maintains a challenge list; the firewall establishes TCP connection with a user and judges whether a source IP address of a get message received from the user exist in the challenge list; if the source IP address of the get message received by the firewall does not exist in the challenge list, the firewall intercepts the get message and establishes a JavaScript redirection page according to the get message and adds the source IP address of the get message, the address of a get request page and the generated address of the generated JavaScript redirection page into the challenge list; when the firewall detects that an entry in the challenge list does not have a redirection access in a preset duration, the firewall adds the source IP address of the entry into a blacklist so as to prevent the subsequent traffic of the source IP address. The invention further provides the firewall for preventing the HttpFlood attack. Through the method, the firewall will not make a misjudgment, so the judgment accuracy rate is high.

The present invention discloses a system of detection and control of melted iron drossing on the basis of image processing. The system provided by the invention comprises: a foundry ladle containing melted iron and slags; a slag-containing basin disposed beside the foundry ladle for containing the slags; a crawler loader arranged at one side of the foundry ladle; a camera connected with a processor; a display connected with the processor and arranged at an operator's position for reflection of the drossing state of melted iron liquid level; and the processor configured to obtain image information acquired by the camera, perform analysis and process of image information, display on the display and access a drossing standard database. The present invention further discloses a method of detection and control of melted iron drossing on the basis of image processing. According to the invention, a drossing process is monitored in real time, and it is determined on line whether drossing grades reach an expected target grade or not according to a drossing standard database so that manual management is avoided, therefore drossing grades may be not misjudged.

The invention relates to a video course playback method based on user interaction. The method comprises the following steps of playing a teaching course video, and capturing expression information ofa user; according to the captured expression information, automatically adjusting a paly parameter of the teaching course video; and determining whether the user approves the adjusted play parameter,if not, restoring a previous play parameter and returning to capture expression information of the user, if yes, returning directly to capture expression information of the user. Compared with het prior art, the video course playback method based on user interaction has the advantages of being more interactive and more accurate.

The application discloses a route unlocking method and a device. A first storage area and a second storage area in an interlocking route table are updated, the real-time properties of section status information and a train address which are recorded in the first storage area and the second storage area are ensured, and then, the interlocking route table is further accessed to obtain the current address of a train and the current status of each section; according to the current address of the train, route signs are maintained, and finally, according to the current route sign and the section status information, the unlocking condition is judged; compared with the prior art, the method disclosed by the application simplifies an unocking judgment process, completes the examination of the section status information while updating the interlocking route table, the temporary collection for the status of a track relay is not required, the unlocking efficiency is improved, and besides, the erroneous judgment for the unlocking conditions cannot be generated by the failure and the abnormal status of the track relay, and the correct unlocking of the route is ensured.

Embodiment of the invention discloses a MPPT (maximum power point tracking) scanning method and system for photovoltaic arrays and solves the problems of high energy loss and failure in scanning actual global maximum power points in the prior art. The method includes: determining a scan voltage range; determining local maximum power points so as to determine a first reference point and a turning point; comparing the current of the first reference point to that of the turning point so as to determine whether scanning is performed on the reference point or not; if yes, scanning to determine the local maximum power points so as to determine a next reference point and a next turning point; if not, directly determining the next reference point and the next turning point; if the newly determined reference point has the voltage exceeding the determined scan voltage range, ending the scanning; if the newly determined reference point has the voltage not exceeding the determined scan voltage range, re-comparing the current of the reference point to that the turning point so as to determine whether to scan around the reference point or not, and continuing to execute till the end of scanning according to the previous steps; after scanning, using the maximum on of the local maximum power points as the maximum power point of one photovoltaic array.

The invention discloses a method and device for judging faults of a wind electricity doubly-fed generator rolling bearing. The method comprises the following steps: respectively detecting acceleration signals of a doubly-fed generator driving end and a non-driving end, respectively extracting acceleration extreme point signals so as to obtain a time sequence of acceleration extreme points, respectively calculating elastic support force to obtain a time sequence of the elastic support force, respectively performing DFFT (Discrete Fast Fourier Transform) so as to obtain bearing fault characteristic frequency signal, respectively performing fault judgment on the a doubly-fed generator driving end and the non-driving end according to the bearing fault characteristic frequency signal, and outputting the judgment result. The device comprises a first acceleration sensor, a second acceleration sensor, an acceleration extreme value point extracting module, an elastic support force calculation module, a fault characteristic frequency calculation module and a fault judgment module. The method and the device have the advantages of precise fault detection, high accuracy, convenience and rapidness in detection, convenience in use, and low bearing management and maintenance cost.

The invention discloses a key testing circuit. The key testing circuit has the advantages that the key identification performance is good, key circuits of the key testing circuit are in parallel connection, resistance values of all divider resistors are set reasonably, and a single chip microcomputer can judge keys accurately according to different input voltages; the robustness is good, and when a plurality of keyboard keys are pressed at the same time randomly, incorrect judgment is avoided; and the circuit is simple in structure, low in production cost and easy for large-scale production.

The invention discloses a bootlegging video identification method and system, wherein the method comprises the steps of S1, correcting an image of a to-be-identified video; S2, judging the position ofthe screen by extracting the corrected position area of interest of the video; S3, cutting the corrected video image according to the position of the screen; S4, carrying out noise reduction processing on the cut video image; and S5, carrying out similarity comparison on the to-be-identified video subjected to the noise reduction processing and the genuine video, and judging whether the to-be-identified video is a bootlegging video or not according to a comparison result. Compared with the prior art, the precision and the accuracy of the comparison result of the bootlegging video and the legal copy video can be improved.

The invention discloses a GIS circuit breaker fault on-line monitoring device based on sound. The device comprises a microphone array board and a host circuit board. The microphone array plate comprises an electret microphone and a conditioning circuit. A signal of each electret microphone passes through the conditioning circuit and then is output to the host circuit board. A signal acquisition unit on the host circuit board synchronously acquires an output signal of each electret microphone. The acquired data is processed by the signal processing unit, and whether the acquired data is valid data or invalid data is judged. Effective data and invalid data are stored in the data storage unit, the effective data are input into the AI diagnosis unit, a trained breaker action fault sound modelis arranged in the AI diagnosis unit, the effective data are recognized and judged through the model, and a judgment result is transmitted to a data background through the communication unit. The mechanical state of the circuit breaker is judged through voiceprints, the method does not need to be connected with a circuit breaker entity, and no influence exists on operation of the circuit breaker body.

The invention discloses an advanced detection system which comprises at least two advanced detection drill holes, electrodes and an electrical prospecting apparatus used for supplying power and collecting current and voltage, wherein the advanced detection drill holes are located in front of a tunneling head-on, one or more electrodes are arranged in the advanced detection drill holes, and the electrodes are connected with the electrical prospecting apparatus. The invention further provides a method adopting the system. The system and the method have the advantages that the electrodes are arranged in the drill holes, then geophysical prospecting detection work is carried out, the geophysical prospecting advanced detection technology and the drilling advanced detection technology are combined, the water damage distribution situation in front of a tunneling roadway can be accurately obtained, the field drilling workload is reduced, the construction efficiency is greatly improved, and theroadway tunneling work progress is improved.

The invention provides an abnormality detection method and device for detecting abnormal operation of a work system. The method and device are suitable for detecting abnormal operation of the work system. The method comprises the following steps: calculating the use amount safety range of the operation system in one or more time periods according to historical data streams; and according to the current data flow and the usage amount safety range, calculating an abnormal ratio corresponding to one or more time periods; selecting one or more abnormal time periods from the one or more time periods according to the threshold value and the abnormal ratio; calculating an anomaly indicator for each of the one or more anomaly periods based on the historical data stream and the current data stream; and ranking one or more abnormal time periods according to the abnormal indexes.

The invention relates to an electronic white board and a positioning method thereof, in particular to an electromagnetic interactive electronic white board using a pointer device with no battery and a positioning method thereof. The electronic white board uses a plurality of signal management devices to respectively control the antenna substrate in the electronic white board to send out electromagnetic energy so that the energy-sending processes can not interfere mutually and the false judgement on the position of the pointer device with no battery can not be caused. In addition, the battery can be replaced by using the antenna substrate in the electronic white board to send out electromagnetic energy and energy can be provided for the pointer device with no battery to emit electromagnetic signals, thus the electronic white board is more environmentally friendly and practical.

The invention discloses a boundary ball judgment system based on electromagnetic disturbance. The boundary ball judgment system comprises a ball body (1), a boundary line (2), an out-of-bound judgment device (3) and a result prompt device (4); the out-of-bound judgment device (3) comprises m*n boundary trigger coils (31) and a trigger signal processing module (32), the m*n boundary trigger coils (31) are evenly buried in the boundary line (2) and areas in the inner side and the outer side of the boundary line (2), the end faces of the boundary trigger coils (31) and the plane of a court are mutually parallel, and a magnet/guide magnet (11) is fixed to the ball center of the ball body (1); and a signal receiving end set of the trigger signal processing module (32) is correspondingly connected with signal output end sets of the boundary trigger coils (31), and a result output end set of the trigger signal processing module (32) is connected into an input end set of the result prompt device (4). The boundary ball judgment system has the beneficial effects that the accuracy is extremely high, misjudgment caused by influences of player running is avoided, and all functions can further be achieved only through hardware.

The invention provides a mouse button locking device, A CPI (count per inch) button resistor is connected with a CPI button switch selectively. When a user adjusts the CPI value of a mouse, only the CPI resistor is in a connection state, so that the erroneous judgment of a mouse controller caused by pressing other buttons down simultaneously can be prevented, the CPI resistor can be simultaneously prevented from being in parallel connection with other button resistors, and the situation does not need to be considered in the setting in a mouse control chip, thereby being favorable for reducing the design difficulty of the mouse control chip.

The invention relates to a breathing humidifier and a dry burning detection method thereof and a computer readable storage medium, the breathing humidifier and the dry burning detection method thereof comprise the following steps: 1, controlling the temperature of a heating disc to be maintained at a preset temperature; secondly, the current input power P < total > of the heating disc is substituted into a standard relation between power and temperature to obtain the normal temperature T < disc > of the heating disc; step 3, calculating according to a formula = to obtain a temperature difference delta T; if the delta T is smaller than or equal to the threshold value D, the second step is executed again, and when the delta T is larger than the threshold value D, dry burning is judged; the threshold value D is 4-5 DEG C. Due to the fact that the standard relation between the power and the temperature is adopted in dry burning detection, and the standard relation between the power and the temperature comprises the power loss condition of the heating disc, the quality of the heating disc, the quality of water in the humidifying tank and the initial temperature, the judgment accuracy is high.

The invention discloses an optically-controlled compass for a blind person. The optically-controlled compass for the blind person comprises a compass shell, wherein a compass, an optically-controlled acoustic circuit, a power supply, a loudspeaker, a button switch and an optical sensor are arranged in the compass shell; the optical sensor is arranged at a north seeking end of the compass; the length of the north seeking end of the compass is greater than that of a south seeking end and greater than the distance from the optical sensor to the connecting part between the north seeking end and the south seeking end of the compass; the length of the south seeking end of the compass is smaller than the distance from the optical sensor to the connecting part between the north seeking end and the south seeking end of the compass; the optical sensor is connected with the optically-controlled acoustic circuit; the optically-controlled acoustic circuit is connected with the loudspeaker; the loudspeaker is connected with the button switch; and the button switch is connected with the power supply. The optically-controlled compass for the blind person has a simple structure, is convenient to use and can indicate the north direction and the south direction for the blind person, and positions in other directions can be determined according to the known directions.