32results about How to "Judgment method is accurate" patented technology

The invention provides a method for recognizing the water breakthrough rule of a fractured reservoir. The method includes the steps of firstly, obtaining related production data of a mine production well; secondly, generating a daily water content variety curve of a fractured reservoir production well according to the related production data of the mine production well; thirdly, dividing water content variety stages of the fractured reservoir production well; fourthly, determining the included angle phi formed when regression equations of two adjacent water content variety stages intersect; fifthly, counting the range of the included angles phi formed by all different water content stages of the production well; sixthly, providing the range of the included angles phi during water breakthrough of the production well through the combination of geological information and experiences, and determining the water breakthrough time. The method is reasonable, accurate, simple and easy to operate, and the problem that the water logging time of an existing fractured reservoir production well can not be clearly learned is effectively solved.

The invention discloses a transformer on-load tap-changer mechanical condition monitoring method. The method includes collecting a vibration signal during the switching of a transformer on-load tap-changer; calculating the embedding dimension of the vibration signal; calculating the scale factor of the vibration signal, and performing coarse graining processing on the vibration signal so that a reconstruction matrix can be obtained; performing dimensionality reduction and decomposition on the reconstruction matrix; performing symbolization and coding processing on the row vector in the reconstruction matrix after dimensionality reduction so that the shape characteristic sequence of the vibration signal can be obtained; and calculating the similarity of the shape characteristic sequence ofthe vibration signal of a to-be-detected tap-changer and the shape characteristic sequence of a history vibration signal, and judging the mechanical condition of the tap-changer through the similarity. The method can effectively and highly sensitively monitor the mechanical conditions of transformer on-load tap-changers on line, and therefore, the timely overhaul or replacing of the tap-changers can be realized, and the operation reliability of the tap-changers and transformers can be enhanced.

The invention provides an intelligent evaluation system for a table tennis training machine. The intelligent evaluation system comprises a table tennis drop point image acquisition part, an image processing part and an intelligent evaluation part, a piece of marking gridding tablecloth is spread on a table board, a camera shoots the marking gridding tablecloth, an upper computer is connected with the camera through a video acquisition card, video processing software in the upper computer processes video images, the upper computer is connected with a lower computer singlechip system through an RS-232 serial port, and the singlechip system is connected with an LED display screen. The intelligent evaluation system achieves intelligent evaluation function of the table tennis training machine through identifying drop point positions of table tennis and assessing the hitting effect.

The present invention relates to the technical field of vehicle detection, in particular to a method for detecting vehicle congestion, comprising the following steps: (a) selecting a detection area with a length of 200 meters, and using a passive infrared thermal sensor with a frame rate of 25 frames per second The imager acquires images in the detection area; (b) if the same vehicle is detected in 5 frames in the detection area, it indicates that the vehicle has entered the detection area and the vehicle is tracked; (c) in the detection area , the congestion judgment is as follows: (c1) If the number of frames that the vehicle appears in the detection area is less than 300 frames, it indicates that the detection area passes smoothly; (c2) if 500 frames > the number of frames that the vehicle appears in the detection area > 300 frames , indicating that the detection area is passing slowly; (c3) If the number of frames of the vehicle in the detection area is >500 frames, it indicates that the detection area is congested. The judging method of the invention is simple, accurate, fast and efficient.

The invention discloses an automobile battery state monitoring and warning system and method. The system includes a battery sensing unit, a BCM (Body Control Module), a combined instrument unit, an on-board T-BOX unit and a handheld terminal. The battery sensing unit is installed at the negative end of a battery, and is electrically connected with the BCM. The BCM is electrically connected with the combined instrument unit and the on-board T-BOX unit. The on-board T-BOX unit wirelessly communicates with the handheld terminal. The battery sensing unit detects the discharge current, internal resistance and state of charge (SOC) of the battery in real time, and transmits the discharge current, internal resistance and SOC of the battery to the BCM for judgment. When the power of the battery islow or the life of the battery is expired, the BCM sends alarm information to the combined instrument unit for display or sends alarm information through the on-board T-BOX unit to the handheld terminal for display. The owner can be notified of the accurate state of the battery, and the user experience can be enhanced.

The present invention relates to a multi-media conversation service quality management method in a variety of wireless network convergence environments, including: user II is conducting a one-way multimedia conversation with user I, and when user I's terminal decides to switch, perform the following steps: A1) user I Judging the target network type to be switched into; A2) user I sends a switching notification signaling to user II, which records the target network type in the switching notification signaling; A3) user II receives the user I sending in step A2) The switching notification signaling of the signaling, and then adjust the local audio / video encoding rate according to the target network type in the signaling; A4) after step A3) ends, the user II sends back a switching confirmation signaling to the user I; A5) the user I is in After step A2), wait for the handover confirmation signal from user II, and perform handover immediately when receiving the handover confirmation signal. The method of the invention can effectively improve the service quality of multimedia communication.

The invention discloses an intelligent in-event disposal-based security protection method and system. The security protection method includes the following steps that: the characteristic information of an environment is sensed; the weight of each kind of characteristic information is set, and calculation is carried out according to the danger value and weight of each kind of information so as to obtain a danger superposition value; the danger superposition value is compared with a danger threshold value, so that the danger level of the onsite environment is judged, if the onsite environment is dangerous, alarm signals of different levels are sent to a monitoring end, and a matched disposal program is generated at the same time; the disposal program is automatically implemented, or an automatic program is terminated by a supervisor, and violence is stopped through remote control or onsite violence suppression is implemented. With the intelligent in-event disposal-based security protection method and system of the invention adopted, background supervisors can obtain alarm information directly through visual sense and auditory sense; and information such as the facial and behavior characteristics of onsite people, the shapes and attributes of objects, and surrounding environment can be sensed intelligently and judged, and the in-event disposal of a dangerous event can be realized automatically. The intelligent in-event disposal-based security protection method and system of the invention have the advantages of intelligent and comprehensive alarm signal collection, high accuracy, timely onsite disposal and high practicability; and the popularization and use of the method and system can be favored.

The invention discloses an on-line monitoring method for the operation state of a power transformer under the condition of DC bias, comprising the following steps: collecting vibration signals of the transformer box wall, three-phase voltage signals of the transformer, three-phase current signals of the transformer and neutral point DC current; The transformer vibration clustering model is established based on the K-means clustering analysis method; the measured amplitude of the 100Hz component of the transformer box wall vibration signal is compared with the output of the transformer vibration clustering model. If the relative error between the two is less than a threshold , then it is judged that the transformer is operating normally; if the relative error between the two is greater than or equal to the threshold, it is judged that the transformer is operating abnormally. The method can effectively and highly sensitively monitor the operating state of the transformer under the condition of DC bias on-line, so that effective measures for the DC bias of the transformer can be taken or the transformer can be repaired in time to avoid the occurrence of major faults.

The invention provides a control method for preventing a washing machine drain valve from leaking water. A washing machine executes a drain valve water leakage control program before water inflow or after drainage. The drain valve water leakage control program comprises the step of controlling the drain valve to execute switching-on and switching-off motions again after the drain valve is shut down. The invention also provides a washing machine adopting the control method. According to the control method for preventing the washing machine drain valve from leaking water, no matter whether there are impurities between a valve plug and a valve body, it can be guaranteed that the valve plug and the valve body can be sealed completely after the drain valve is switched off again. Therefore, according to the control method for preventing the washing machine drain valve from leaking water, control logic of priority judgment is adopted, and the control method is easy to implement and easy to control.

The invention discloses a gait analysis method. A six-axis acceleration sensor at least collects acceleration data in the three directions of space X, Y, and Z; the steps of the judging method are as follows: 1) positioning the time point of complete landing; 3) single-step signal division; 4) calculate the size of the angle; 5) judge the way of landing; 6) judge the internal rotation and external rotation of the foot; 7) judge the running mode. This method can realize real-time detection and analysis of the user's gait through real-time collection and algorithm processing of various parameters based on the user's feet during walking or exercise, and the analysis process is convenient and fast with high accuracy, which is conducive to the early detection of athletes. Make corrections.

The invention discloses a user perception and analysis method and system based on mobile Internet videos. The method comprises the following steps: defining a video business behavior; analyzing a video format to obtain relevant video parameters comprising a video definition buffer time, a video resolution and video content packet format analysis; designing a video business perception and analysis method with a pressure valve leakage bucket as the principle in combination with self video definition, SP definition, operating system definition and other various conditions that affect video playing, judging initial video buffer completion, video blockage occurrence and playing recovery conditions based key parameters based on video perception, and accurately feeding back real perception conditions of a user and video business conditions. By adopting the user perception and analysis method and system disclosed by the invention, the user perception definition accuracy of the video business having the maximum single business traffic of the mobile networking user can be improved, and the network conditions of the mobile Internet and auxiliary problem positioning can be embodied through the business indexes obtained by analysis.

The invention relates to the field of IPTV set top boxes, and particularly relates to a method for overcoming PPPOE dialing failure of an IPTV set top box. An optical modem is connected with a centraloffice device and an IPTV set top box separately, the optical modem is provided with a session detection module, a session recording module, a link sate sensing module, and a session clearing module,which are used for completing an information processing procedure and a troubleshooting procedure, the information processing procedure and the troubleshooting procedure are performed at the same time, the session detection module monitors a message received and transmitted by the optimal modem at any time, the link sate sensing module monitors an optimal modem LAN port, and determines whether dialing failure occurs, the session recording module creates a session recording file, the session clearing module reads the session recording file established by the session recording module, fills a PADT message with the session recording file, sends the PADT message, and terminates a PPPOE session between the IPTV set top box and the central office device. All modules perform respective functionsand run synchronously, thereby discovering and solving the dialing failure problem at fastest speed, improving efficiency and improving user favorability.