83results about How to "Judgment time is short" patented technology

The invention discloses a multi-point leakage locating method of a water supply network based on a convolution neural network, comprising the following steps: pressure data of the water supply networkis collected, the collected water supply data is divided into a training sample and a test sample; the smaples are normalized, the normalized samples are input into the convolution neural network model for training, and the convolution neural network model is obtained. The normalized test samples are used to test the convolution neural network model, and the trained convolution neural network model is saved. The real-time data are normalized and input into the trained convolution neural network model, and the prediction results are obtained through the trained convolution neural network model. The prediction results are compared with the tag index to judge the leakage. The invention also discloses a multi-point leakage locating device of a water supply network based on a convolution neural network. The invention reduces noise points in data through convolution and pooling operations, extracts special features in each type of data, and makes prediction more accurate.

The invention provides an intelligent automobile safety air bag system and a control method and relates to the field of automobile safety. The system is characterized by comprising a sensor system, a processor system, a mobile control terminal and an air bag device; the sensor system comprises a horizontal acceleration sensor, a vertical acceleration sensor, a horizontal speed sensor, a vertical speed sensor and a pressure sensor; the processor system comprises a discriminator, a central processing unit and a self-checking unit; and the air bag device comprises a first safety air bag, a second safety air bag, a third safety air bag, a first gas generator, a second gas generator and a third gas generator. The system has the beneficial effects of being safe, reliable, accurate, individual and the like.

The invention discloses a transformer excitation surge current discriminating method based on sampling sequence absolute value skewed distribution. The method comprises steps that, a differential current for differential protection on a transformer is sampled through set sampling frequency; difference operation and absolute value taking operation for the sampling data are carried out, sampling data at the newest power frequency period is taken to calculate a skewed coefficient; if the skewed coefficient is greater than 0, the differential current is determined to be the excitation surge current, if not, the differential current is not the excitation surge current. The method has properties of intelligible criteria, small computational complexity, obvious distinction and rapid and accurate motion, has low hardware requirements for devices, and is convenient to realize with no need for personal value setting.

The invention discloses a fault arc protecting device and method. The fault arc protecting device comprises a control unit, a pulse detection circuit and a zero-crossing detection circuit, wherein the pulse detection circuit is used for sampling current signals of a protecting circuit to obtain detection circuit pulse signals and sending the detection circuit pulse signals to the control unit; the zero-crossing detection circuit sends trigger electric signals to the control unit when detecting that the current value of the current signals is zero; the control unit is used for conducting periodic analysis on the detection circuit pulse signals on the basis of the trigger electric signals so that fault arcs can be detected. The fault arc protecting device can shorten judgment time, increase response speed and protect the fault arcs more reliably and effectively.

The present invention relates to parallel reactor relay protection technology for extrahigh and veryhigh voltage electric power system. It includes real-time digital collection, fast judging voltage abrupt reduction in failure phase based on sinusoidal theorem, fast calculation of dynamic impedance abrupt change in failure phase and impedance difference in different phases. The present invention judges the failure property via comparing the abrupt change in dynamic impedance of the failure phase and makes the failure phase to trip after re-judgement. According to the change of voltage, current and impedance of the various phases, different failures, including earthing inside winding, voltage transformer loop failure, turn to turn short circuit and winding open-circuit, may be judged.

The invention relates to a cheating behavior determination method and device, a storage medium and a computer device. The method comprises the steps of obtaining a video frame formed in a game process; extracting a pixel value of a target color from the video frame to obtain a frame image formed by the pixel value; determining that the video frame contains a virtual object displayed due to a perspective obstacle according to the frame image; when it is detected that a sighting device used for positioning the virtual object is started, determining that at least one virtual object exists in a view field area corresponding to the sighting device in the displayed virtual objects; and when it is detected that the projection operation is executed, judging that a cheating behavior exists in the game process. According to the scheme provided by the invention, the efficiency of judging cheating behaviors can be improved.

The application provides a password verification method and system. The method comprises the step that S1, an upper computer generates a PIN value; S2, the upper computer acquires a random number from a USBKEY; S3, an instruction data packet for PIN verification is generated; S4, the USBKEY parses the instruction data packet; and S5, parsed data are determined, and if the determination is successful, the PIN verification passes. According to the password verification method and system provided by the application, the real security of a verification password is ensured by performing asymmetric algorithm encryption on the random number, the length of a user PIN value and the user PIN value, so that the security level of the password is improved, PIN code information leakage is prevented, and higher-level attack to the USBKEY can be defended; and in addition, through grading verification on the random number, the length of the user PIN value and the user PIN value, the determination time is saved, the USBKEY response speed is higher, and the user experience is improved.

The present invention relates to protection technology for extrahigh and veryhigh voltage electric power system and is the fault-tolerant discrimination method for turn-to-turn shor-circuit protection of parallel reactor. It includes two parts of fault-tolerant discrimination method and real-time dynamic impedance compensation criterion. The fault-tolerant discrimination method includes reliable collection platform circuit and its use in collecting relevant data for fault-tolerant discrimination. The real-time dynamic impedance compensation is used for raising the sensitivity and reliability in judging the turn-to-turn shor-circuit failure of parallel reactor.

The invention discloses an identification method for excitation surge current of a transformer based on kurtosis and skewness. The identification method comprises the following steps: initially setting a first setting value, a second setting value and a third setting value, performing uniform continuous sampling on differential current of the transformer by adopting an assigned sampling frequency to obtain a sampling value sequence; if a current effective value of the differential current is smaller than the first setting value, exiting the procedure, and otherwise, aiming at the current sampling value sequence, calculating the kurtosis and the skewness of the differential current of the latest power frequency cycle; if the kurtosis is greater than the second setting value and the skewness is greater than the third setting value, judging that the transformer is in an operation state of the excitation surge current, and locking differential protection of the transformer, otherwise, judging that the transformer is in other non-excitation surge current operation states; returning to continuously process the current effective value of the differential current. The identification method disclosed by the invention has the advantages of obvious criterion distinguishing degree, high correctness of identification result, low requirement on hardware realization, short judgment time, good real-time property and low requirement on hardware of an implementation device.

The invention discloses a plug insertion state detection device, comprising a socket, a detection circuit, a single-chip microcomputer control module and a relay control module, the detection circuit is connected in series with the socket, the detection circuit is used to detect load access information, the detection circuit and the relay The control modules are connected in parallel, the relay control module is used to control the power on or off of the socket, the detection circuit is connected to the single-chip control module, and the detection result is transmitted to the control module, and the single-chip control module is used to send execution instructions to the The above relay control module adopts the method of detecting the current waveform, which can accurately judge whether there is a load connected to the socket, and the judgment time is short, reaching the millisecond level, and can effectively detect the looseness of the plug, and then perform corresponding processing to prevent the plug from loosening And a series of problems and accidents caused by poor contact.

A current protection control method of a vacuum breaker includes the steps of: first sampling a current signal from a current transformer; then judging whether the sampled current signal is an overcurrent / short-circuit signal; if so, taking the sampled current signal as a parameter and calculating the current effective value; if the effective value is more than a setting value, conducting protection action; otherwise, continuing to sample. The steps for judging current signals are as follows: 2.1) first calculating the mutational volume iDelta-n of a group of sampling current signals of a plurality of continuous sampling points at intervals; if the mutational volume iDelta-n is more than a preset setting value iDelta-ns, entering into step 2.2); or if iDelta-n is no more than the preset setting value iDelta-ns, then continually calculating the mutational volume of current signals of next group of the sampling points, with the number of each group of sampling points being the same in the step; and 2.2) calculating the mutational volume iDeltak of each pair of adjacent sampling points in the group of sampling points, if each mutational volume iDeltak is more than the preset setting value iDelta1S, then judging the occurrence of overcurrent / short circuit, and entering step 3).

The invention provides an intelligent automobile safety air bag system and a control method and relates to the field of automobile safety. The system is characterized by comprising a sensor system, a processor system, a mobile control terminal and an air bag device; the sensor system comprises a horizontal acceleration sensor, a vertical acceleration sensor, a horizontal speed sensor, a vertical speed sensor and a pressure sensor; the processor system comprises a discriminator, a central processing unit and a self-checking unit; and the air bag device comprises a first safety air bag, a second safety air bag, a third safety air bag, a first gas generator, a second gas generator and a third gas generator. The system has the beneficial effects of being safe, reliable, accurate, individual and the like.

The invention relates to the technical field of vehicle intellectualization, in particular to an automobile central control safety control system which comprises a mainboard system. The mainboard system comprises a central control processor, the central control processor is connected with a switching module, the switching module is connected with an auxiliary processor, and the auxiliary processor is connected with a backup memory; the central control processor is used for detecting whether the central control system crashes or not, and the central control processor is used for sending a switching instruction to the switching module when detecting that the central control system crashes; the switching module is used for receiving a switching instruction, and the switching module is used for handing over a control right for controlling various functions of the automobile to the auxiliary processor after receiving the switching instruction; the auxiliary processor is used for reading the temporary setting files of the various functions of the automobile in the backup memory to control the various functions of the automobile, and the backup memory is used for storing the temporary setting files of the various functions of the automobile. The technical problem that sudden crash of the central control system of the automobile cannot be handled in the prior art is solved.

The invention discloses an early pregnancy test paper combined device. The early pregnancy test paper combined device comprises a test paper strip and a test paper tray, the separating block is provided with three mounting positions for test papers at different concentrations in the vertical direction, namely a first test paper is arranged in a first open cavity at the upper end, a second test paper is arranged in a second cavity at the middle part, and a third test paper is arranged in a third cavity at the lower end; and an HCG antibody concentration sensor is arranged in each cavity and used for transmitting detected data to a receiving terminal. The early pregnancy test paper combined device has the advantages that whether reaction process of the test paper is carried out or not is judged by adopting the redundancy judging manner, accuracy of the judging process is greatly improved, subjective factors are eliminated, judgement is made by virtue of control equipment, judgement time is short, and judgement result is accurate.

The invention discloses a novel identity card intelligent lock system. The novel identity card intelligent lock system has the advantages that person-card united verification can be carried out by anintelligent lock according to fingerprint information in identity cards, an open verification method is implemented, recognition for the loss-reported identity cards and alarm for the identity cards of personnel wanted for arrest can be supported, accordingly, person-card united verification and recognition and alarm for the personnel wanted for arrest can be carried out in the homestay industry just like hotels, alarm functions are identical to alarm functions of the hotels, alarm can be directly given to local police stations, alarm can be carried out in the homestay industry according to original alarm modes of the hotels for the personnel wanted for arrest, and the novel identity card intelligent lock system is free of additional new processes and the training expenses for personnel for implementing the new processes.