75results about How to "No additional cost" patented technology

The invention discloses an MYH9-RD auxiliary screening system and an MYH9-RD auxiliary screening method based on blood cell morphology. Comprising an image acquisition module, an image detection module and an image analysis module, wherein the image acquisition module is responsible for acquiring a Wright stained peripheral blood image of a case to be screened; the image detection module is responsible for acquiring an independent image of each blood cell; the image analysis module is responsible for acquiring blood cell category information, leukocyte form information and platelet size information; the counting and processing module is responsible for generating an analysis result of a case to be screened; the related disease judgment module is responsible for generating an MYH9-RD screening result; and the result output module is responsible for outputting the screening result. According to the method, the morphology of the special cells of the peripheral blood is accurately identified and the number of the cells is accurately calculated through an artificial intelligence algorithm, so that the defects of incomplete visual capture and easy fatigue of human beings are overcome, misdiagnosis and missed diagnosis caused by personal errors or subjective differences are reduced, accurate identification of the cell morphology is realized, and the working efficiency is greatly improved; and early, rapid and efficient screening of the MYH9-RD is facilitated.

The invention discloses a power supply system and a charging method of a new energy automobile and the new energy automobile, and belongs to the technical field of new energy. Determining a charging mode; if the battery pack is in the overcharge mode, the BMS controls the first switching relay group to be closed, so that the battery pack is configured into two battery branches which are connected in parallel to be connected into a main loop, and each battery branch comprises three single-pack batteries; the main loop relay group and the charging relay group are controlled to be closed, so that the charging module charges the two battery branches through the main loop; if the battery pack is in the general charging mode, the BMS controls the second switching relay set to be closed, so that the battery pack is configured into three battery branches connected in parallel to be connected into the main loop, and each battery branch comprises two single-pack batteries; and the main loop relay group and the charging relay group are controlled to be closed, so that the charging module charges the three battery branches through the main loop. Switching between high-voltage charging and low-voltage charging can be achieved, the charging time can be shortened, and the cost can be reduced.

The utility model relates to mould technical field especially relates to a mould structure capable of automatically falling injection plastics head. It includes upper die and lower die who sets up correspondingly up and down, and forms injection cavity between upper die and lower die, and upper die includes front plate, the stripper plate who is connected with front plate bottom surface through stripper plate pull rod, and the female die plate who is connected with front plate through small pull rod, and the stripper plate placing groove who is used to install stripper plate is set up on female die plate upper surface. The utility model has the advantages that: after the technical scheme injection moulding is completed, the male die plate retreats, the front plate and the female die plate open, the stripper plate pull rod forces the stripper plate to separate from the female die plate, the sprue is pulled out by the stripper plate from the female die plate and automatically falls, the male die plate continues to retreat and separates from the female die plate, and the product is ejected and taken out, the flow channel structure is pulled out by the material pulling plate, and after the injection moulding is completed, it is automatically dropped, the mould is simplified, and the process of increasing manpower to take the flow channel or increasing the mechanical hand to take out the flow channel is avoided.

The invention discloses a pre-charging control method and circuit for a flying capacitor three-level totem pole PFC (Power Factor Correction). The pre-charging control method comprises the following steps: step 1, charging a direct-current bus by alternating current of a power grid; step 2, when the alternating current voltage of the power grid is greater than the lower limit of the equipment protection value, entering step 3; 3, if the voltage value of the flying capacitor is lower than a given value, controlling a power tube to be conducted through a proportional controller, and charging the flying capacitor by the alternating current of the power grid; if the voltage value of the flying capacitor is higher than the given value, the power tube is turned off, and the flying capacitor discharges through the discharge resistor; 4, when the difference value of the flying capacitor voltage value and the given value is kept within the preset range, the pre-charging stage is ended, and after boosting of the direct-current bus is ended, the pre-charging circuit exits, and the equipment enters a normal working mode. According to the invention, under the condition that an external circuit is not added, pre-charging of the flying capacitor of the flying capacitor three-level totem pole PFC is realized by using a proportional controller algorithm which is easy to realize.

The present invention provides a single sideband signal generator, comprising: a modulator configured to generate a first modulated optical signal and a second modulated optical signal having the same amplitude; and the sideband suppression light circuit based on the first light delay line is used for generating a full-carrier single-side-band signal, and / or the sideband suppression light circuit based on the second light delay line is used for generating a carrier-suppressed single-side-band signal. The present invention simplifies the structure by saving half the space occupied by redundant signal electrodes, and also reduces the RF power consumption by half by removing an RF mixer. The provided single side band (SSB) signal generator has the advantages of compact structure, low cost and energy conservation. By reasonably designing the length of the optical delay line, the generator can be easily expanded to a higher frequency range on the premise of not needing extra cost.

The present disclosure provides a system on chip, a display terminal and a readable storage medium. The system on chip is applied to the display terminal. The display terminal further comprises a display panel and a backlight module. The system on chip comprises a first data interface, a second data interface, a memory, a central processing unit and a computer program stored in the memory and capable of running on the central processing unit. The central processing unit is connected with the first data interface and the second data interface respectively. When the computer program is executed by the central processing unit, the following steps are implemented: obtaining to-be-displayed data; obtaining backlight matrix data according to the to-be-displayed data; outputting the to-be-displayed data to the display panel through the first data interface and outputting the backlight matrix data to the backlight module through the second data interface.

This invention discloses a method and system for automatic scaling of a Kubernetes cluster based on pooled virtual machines, including the following steps: developing a VM Pool management service tool, which implements abstract management of the VM Pool and supports multi-cloud environments; executing tasks based on scheduled logic, obtaining the default configuration of a specified VM Pool, and comparing the current number and specifications of standby VMs with the expected number of standby VMs (standbySize) and specifications (vmSpec) in the YAML configuration. This invention can launch more suitable virtual machines according to business needs at different times, effectively improving resource utilization and reducing waste. Compared with the native elastic scaling service, the success rate of Node startup can be increased from 95% to 99.9%, and the average Node startup time can be shortened from about 2 minutes to about 20 seconds.

The present invention relates to the relevant technical field of controllers, and in particular, to a method and circuit for setting and querying parameters of a single-chip microcomputer controller with a MODBUS-RTU slave protocol. Since the present technical solution implements the method of "the second serial port of the single-chip microcomputer monitors the data input (UART1_RXD) pin of the first serial port of the single-chip microcomputer according to preset specified parameters; when the specified preset data frame is monitored, the variable is set to the setting and query parameter state, the single-chip microcomputer stops the normal communication, initializes the first serial port of the single-chip microcomputer with the preset specified parameters, and uses the MODBUS-RTU protocol to set and query the MODBUS-RTU parameters of the data storage area", the single-chip microcomputer controller with the MODBUS-RTU slave protocol has the function of setting and querying MODBUS-RTU parameters, and there is no need to increase the original circuit elements.

The invention provides a vehicle anti-theft monitoring method, electronic equipment and a vehicle, which are applied to the technical field of vehicle anti-theft monitoring, when the vehicle is locked, anchor point distances are determined based on all ultra-wide band anchor points at preset intervals, the anchor point distance determined for the first time in all the anchor point distances is determined as an initial anchor point distance, and the initial anchor point distance is determined as an initial anchor point distance; all other anchor point intervals except the initial anchor point interval are determined to be real-time anchor point intervals, when one real-time anchor point interval and the initial anchor point interval meet the preset theft condition, it is indicated that the vehicle posture and / or position represented by the real-time anchor point interval changes obviously at the moment, and then it is indicated that the vehicle may be stolen. At the moment, an alarm is given out to remind a user that the vehicle is likely to be stolen, whether the vehicle is stolen or not can be judged only by determining the distance between the anchor points through the ultra-wide-band anchor points arranged on the existing vehicle, and hardware equipment does not need to be additionally arranged on the vehicle.

The present application relates to the technical field of wireless network optimization, and discloses a kind of based on multi-parameter dynamic adjustment's portable WiFi network switching method and system, a kind of based on multi-parameter dynamic adjustment's portable WiFi network switching method, comprising the following steps: step S1, the incidence factor change rate is calculated;Step S2, the thermal hysteresis compression factor is calculated;Step S3, the historical effective capacity and forward prediction capacity are calculated;Step S4, the service required service rate is calculated;Step S5, the arc segment bias is calculated;Step S6, the final income value is calculated;Step S7, the target network number, switching execution flag and stable maintenance duration are generated.The present application includes the switching decision system with the geometric penetration characteristics of vehicle window and equipment thermal inertia, through the quantitative identification of the asymmetry of serviceable arc segment, completes the comprehensive income evaluation of candidate network and target network selection, reduces meaningless frequent switching action, improves the continuity of cellular backhaul link.

The invention discloses a vehicle data collection method and device, a storage medium and electronic equipment, and the method comprises the steps: collecting a CAN message in a vehicle CAN bus, wherein the CAN message comprises a plurality of message frames and the network segment identification information of each message frame; converting the CAN message into a big data message in an SOMEIP protocol format according to the network segment identification information of each message frame; wherein each big data message comprises N SOMEIP data items, the N SOMEIP data items are obtained by converting N first message frames with the same network segment identification information, each big data message further comprises first network segment identification information corresponding to the first message frames, and N is an integer greater than or equal to 1; and sending the big data message to a remote communication terminal. As the conversion of the message format occurs in each domain controller, the remote communication terminal only needs to receive the big data message, so that the requirements on CAN interface resources and hardware computing power of the remote communication terminal are low, the hardware cost of the remote communication terminal does not need to be increased, and the efficient and flexible acquisition of the whole vehicle data can be realized.

The application discloses a hidden projection equipment driven by translation and lifting, which comprises a projector, a projector driving device and a general driving device for driving the projector driving device to horizontally move and drive the projector to a set position; at the set position, the projector driving device drives the projector to lift; when the projector driving device is driven to horizontally move, the projector driving device also drives a shielding object to move away; the projector driving device is driven to horizontally move and drives the projector to the set position, at the set position, the use and hiding of the projector are realized, the projector can be hidden in structures such as a roof, the shielding object can be driven to move away by using the space difference of horizontal movement, the projector can be hidden in roof decoration, the movable decorative plate unit (including a movable lamp plate) can be perfectly and indistinguishably reset, the integrity and decoration of the roof decoration layer are ensured, and excessive cost is not needed.

The present application relates to the technical field of industrial heat dissipation and fan speed control, and specifically discloses a fan control method and system based on temperature data analysis, aiming to solve the technical problems of channel interference conducted coupling through the power bus under the shared power supply architecture, and the high cost and large layout difficulty of the existing hardware rectification scheme. In the present application, the MCU collects the temperatures of two channel regions according to a preset sampling period, calculates the temperature change rate based on the current and previous three period temperature data and generates a temperature rise mark, collects the FG frequency of each channel and the current PWM duty cycle to calculate the characteristic value, and determines the shared power overload state by the synchronous amplitude reduction of the double-channel characteristic value relative to the historical average value. The PWM increment of each channel is calculated in combination with the temperature rise mark, the power overload mark and the temperature deviation, and the corresponding fan is output after the duty cycle is updated. The present application can realize channel decoupling with zero hardware cost, accurately identify the power state, dynamically allocate power resources, and effectively improve the temperature control precision and operation stability of the heat dissipation system.

The invention discloses a sluice safety monitoring method and a terminal, and the method comprises the steps: carrying out the three-dimensional grid division of a space where a sluice building is located, obtaining a sluice three-dimensional grid, carrying out the three-dimensional modeling of the sluice building, obtaining a sluice BIM model, binding the sluice three-dimensional grid with the sluice BIM model, obtaining the monitoring data of a preset safety monitoring station in the sluice building, and obtaining the monitoring data of the preset safety monitoring station in the sluice building. And performing three-dimensional space interpolation calculation based on the monitoring data to obtain monitoring data of each component in the water gate three-dimensional grid, and comparing the monitoring data of each component with a corresponding preset early warning threshold to obtain a risk early warning result of each component, according to the method, each component in the water gate BIM model is rendered by using the preset color corresponding to the risk early warning result, more safety monitoring stations do not need to be added, safety monitoring is more comprehensive, and the components with safety problems can be highlighted, so that more comprehensive and intuitive risk early warning of the water gate is realized without increasing cost.

The invention discloses a reef explosion method for underwater karst cave geology, which comprises the following steps of: S1, lowering a drilling sleeve, so that the drilling sleeve is in contact with the surface of rock; s2, a drill rod is put down, and the drill rod drills the rock till the set depth is reached; s3, releasing the connection between the drilling machine and the drilling rod; s4, putting a chemical feeding sleeve between the drill rod and the drill hole sleeve; s5, the drill rod is connected with the drilling machine, and the drill rod is lifted; s6, the explosive is put down through the explosive feeding sleeve; and S7, the drilling casing pipe and the chemical feeding casing pipe are lifted, and blasting is carried out. When drilling is completed, connection between the drill rod and the drilling machine is removed, the drill rod serves as a guide rod for lowering of the chemical feeding sleeve, the chemical feeding sleeve can be conveniently inserted into a hole below a karst cave, the drilling sleeve can limit the drill rod, the possibility that the drill rod topples over is avoided, and the drilling diameter of the drill rod is generally larger than the diameter of a drill bit. A certain gap exists between the drill bit and the hole, the chemical feeding sleeve is placed through the gap, and accurate placing of the chemical feeding sleeve can be achieved without increasing cost.

The invention belongs to the technical field of automobile electric power steering, and relates to a method for expanding the angle of a steering wheel based on a TAS vernier median, which comprises the following steps of: 1, calculating a vernier median angle interval division point and measurable left and right limit vernier angles, and initializing an effective flag bit of the angle of the steering wheel to be invalid; 2, calculating a current vernier angle; 3, judging whether the current steering wheel angle flag bit is effective or not; 4, judging whether the vernier angle is within an effective measuring range according to the measurable left and right limit vernier angles and the vernier angle; 5, performing difference value calculation and measuring range correction; 6, entering an angle following mode; according to the invention, the problem that the angle identification is wrong when the vehicle is powered on again due to the fact that the steering wheel is abnormally rotated to exceed the measuring range of the TAS sensor after the vehicle is powered off in the traditional scheme is effectively solved, and the robustness and reliability of the angle measurement of the steering wheel are effectively improved.

The application discloses a laser radar distance aliasing elimination method and device, equipment and storage medium, relates to the technical field of laser radar, and comprises the following steps: emitting a detection signal pulse to a target object, so that a single photon sensing array receives a reflected echo signal pulse of the target object and feeds back; obtaining a plurality of detection distances based on the time of flight principle and the echo signal pulse; and determining the real distance of the target object from the plurality of detection distances according to the position information of the highest response point of the single photon sensing array. By adopting the technical means of combining the rotating mirror scanning structure and the single photon sensing array, the physical characteristics that the reflected light spots of different distance targets are offset in position on the sensing array due to the continuous rotation of the rotating mirror during the flight of the laser are utilized, the position information of the highest response point is taken as the judgment basis, and the distance aliasing problem caused by the time sequence ambiguity of the echo signal and the emission pulse when the single repetition frequency pulse laser radar is used for distance measurement is effectively solved.

The application provides a cache management method and device suitable for a cache containing one or more cache components. The cache management method comprises: receiving a data request from a client, the data request containing a first parameter combination; sending a cache instance metadata inquiry request to a cache access management platform according to the first parameter combination; receiving cache instance metadata returned by the cache access management platform in response to the cache instance metadata inquiry request, the cache instance metadata comprising cache component type information; constructing a cache request according to the cache instance metadata, and obtaining data from the one or more cache components based on the cache request. The cache management method of the application dynamically discovers cache components according to an identifier by means of unified cache access service, shields cache component details, and unifies cache management.

This invention discloses a method and system for optimizing speech recognition under noise based on ultrasonic micro-motion detection. The method includes the following steps: an ultrasonic transmitting module continuously transmits ultrasonic signals; an ultrasonic receiving module continuously receives ultrasonic signals; the received ultrasonic signals are preprocessed to obtain the difference frequency signal of the reflected wave from the moving object; based on the obtained difference frequency signal, whether there is micro-motion within a specific distance is detected; if there is micro-motion, speech is output; otherwise, no speech is output. In this invention, the presence or absence of target speech is indicated by detecting lip micro-movements, which has good noise robustness. It utilizes the built-in speaker and microphone of a smart device to transmit and receive ultrasonic waves to detect lip micro-movements, requiring no additional cost, and has high accuracy and strong practicality, making it suitable for industrial-scale application.

This invention provides a sub-meter-level distributed dual-parameter synchronous sensing system using a hybrid grating array, belonging to the field of fiber optic sensing. It includes: a positive and negative sideband modulation unit for generating linearly swept-frequency probe light with positive and negative sidebands; a tunable chaotic light source unit for generating wavelength-tunable low-coherence chaotic light and modulating it into chaotic light differential pulse pairs with different pulse width differences; a hybrid grating array comprising a series-connected array of identical chirped weak gratings (CFBG) and identical narrowband weak gratings (NFBG); the two beams are amplified and then combined and injected into the hybrid grating array; the CFBG array reflects the linearly swept-frequency probe light in response to vibration; the NFBG array reflects the chaotic light differential pulse pairs in response to temperature; the CFBG and NFBG arrays are completely separated in wavelength division multiplexing. This invention enables sub-meter-level spatial resolution dual-parameter synchronous measurement in a dense grating array without increasing the high-frequency hardware bandwidth.

The invention relates to the technical field of power batteries, and discloses a power battery cell impedance detection method, and the method comprises the steps: obtaining a plurality of current values of each cell and a voltage value corresponding to each current value; dividing a plurality of current value intervals in the value range of the plurality of current values; calculating the number of voltage values corresponding to each current value interval; any two current value intervals form a candidate interval pair, and the evaluation score of the candidate interval pair is determined according to the current values of the candidate interval pair and the number of the corresponding voltage values; determining the candidate interval pair with the highest evaluation score in the at least two pairs of candidate interval pairs of each battery cell as a target current value interval pair of each battery cell; determining the impedance of each battery cell according to the current value of the target current value interval pair of each battery cell and a median voltage value in the corresponding plurality of voltage values; and determining the battery cell with abnormal impedance according to the impedance of each battery cell. In this way, the reliability of the battery cell impedance anomaly detection of the power battery is improved.

The invention provides a temperature measuring device, a temperature measuring method and a temperature measuring system. The temperature measuring device comprises a temperature measuring circuit and a control circuit, the temperature measuring circuit comprises a divider resistor and a thermistor, the first end of the divider resistor is used for receiving power supply voltage, and the second end of the divider resistor and the first end of the thermistor are coupled to a temperature measuring node; the control circuit comprises an open-drain structure and a sampling module, the output end of the open-drain structure is coupled to the second end of the thermistor, and the sampling module is coupled to the temperature measurement node. When the temperature measurement circuit needs to measure the temperature, the output end of the open-drain structure pulls down the second end of the thermistor to the ground, so that the temperature measurement circuit is in a conducting state. When the temperature measurement circuit does not need to measure temperature, the output end of the open-drain structure is in a high-resistance state to disconnect the second end of the thermistor, so that the temperature measurement circuit is in an open-circuit state; the sampling module collects the voltage of the thermistor so as to obtain the to-be-measured temperature. According to the invention, the power consumption of the temperature measuring device (such as an NTC temperature measuring circuit) can be effectively reduced while the temperature measuring precision is ensured.

This utility model relates to the field of fluid separation technology, and more particularly to a retention chamber for separating mixed gases. The retention chamber has a hollow structure and can be positioned radially distal to the center of rotation of a primary separation device, rotating coaxially and synchronously with the primary separation device, and the two are connected. A Brownian motion suppressor is provided circumferentially inside the retention chamber, which effectively prevents the remixing of different gas components after separation, improving separation efficiency. Simultaneously, the retention chamber has a first end and a second end arranged axially inclined, with the internal space gradually increasing from the first end to the second end. A first exhaust port is located radially proximal to the first end, and a second exhaust port is located radially distal to the second end. This inclined shape allows different gas components to accumulate in different areas, which is beneficial for improving the purity of the separated gas and facilitates disassembly. This retention chamber has a simple overall structure and small size, and can be used to improve various traditional centrifuge devices on the market.

The invention discloses an inductance type encoder for measuring axial runout and a measuring method, and relates to the technical field of encoder tests.The inductance type encoder comprises a stator and a rotor, a capacitor and an inductor are arranged in the rotor, the inductor is connected with the two ends of the capacitor, a sin coil, a cos coil and an excitation coil are arranged in the stator, and the excitation coil is connected with the inductor. The sin coil and the cos coil are arranged on the inner wall of the circumference of the stator, and the excitation coil is arranged at the end part, far away from the rotor, of the stator; an MCU (Microprogrammed Control Unit) is arranged in the stator and is used for measuring a signal reflected by the rotor; according to the invention, the axial runout of the inductor encoder is measured through real-time signal intensity, so that the inductor encoder which can only measure the axial angle originally can also measure the axial runout at the same time. Hardware cost does not need to be increased, and design of a user is facilitated. The axial run-out information can be used for equipment operation state monitoring and fault diagnosis, and the equipment intelligence is greatly improved.

This invention discloses a method and system for detecting defects in valve castings based on image recognition, belonging to the field of image processing technology. The method includes: acquiring a grayscale image of the valve casting; dividing it into continuous windows and linearly fitting the grayscale value sequence within the continuous windows to obtain the trend slope and intercept; determining the trend prediction value for each pixel; and calculating the absolute value of the residual between the actual grayscale value and the predicted value. Pixels with residuals greater than a threshold are selected as candidate pixels; spatially adjacent pixels are divided into connected regions, and contour pixels are extracted. The trend of the region surrounding the contour is re-estimated based on the continuous window radius and lower limit ratio; the residual is calculated based on the search step size and screening factor; and neighboring pixels are located and included to form a defect region. This invention can improve the accuracy of defect identification in valve castings.

The invention relates to the technical field of rice oil refining, and in particular to a method for producing extra-high oryzanol rice oil. The method has the following steps: 1. Front-end treatment of crude rice bran oil: crude rice bran oil is subjected to degumming, dewaxing, and primary decolorization to obtain primary decolorized oil; 2. The primary decolorized oil is divided into two parts and used for the following two production routes respectively: Route 1: low-oryzanol rice oil product route, and Route 2: extra-high oryzanol rice oil product route. The invention can stably produce extra-high oryzanol rice oil with a oryzanol content of ≥4% (40000ppm), and at the same time has the effect of enriching other beneficial components (phytosterols, squalene). In addition, its physical and chemical indicators, hygiene indicators, and food safety indicators are basically the same as those of conventional refined rice oil, and meet the relevant standards for edible rice oil.

The invention discloses a vehicle-mounted millimeter wave radar target size enhancement estimation method based on multipath compensation. The method comprises the steps of identifying whether a current radar detection environment is a multi-path salient scene according to received radar point cloud data, if the current radar detection environment is the multi-path salient scene, obtaining a reflecting surface of the multi-path point cloud data, sequentially extracting a target point cloud and the multi-path point cloud data from the radar point cloud data, and obtaining the target point cloud and the multi-path point cloud data according to the target point cloud and the multi-path point cloud data. Establishing a propagation model according to the geometrical relationship between the multi-path point cloud data and the reflecting surface, mapping the coordinates of the multi-path points to the position of the target body according to the propagation model to form a compensation point cloud, fusing the target point cloud and the compensation point cloud to form an enhanced target point cloud set, and estimating the size of the target based on the enhanced target point cloud set. According to the method, the defect of directly detecting the point cloud is overcome, the multipath interference can be converted into beneficial information, the system robustness is improved, and the method is suitable for an existing vehicle-mounted millimeter wave radar system.

The invention relates to a preparation method of a silver tin oxide composite material added with rare earth oxide. The preparation method comprises the steps of burdening, smelting, water atomization, powder drying, powder screening, powder mixing, powder oxidation, cold isostatic pressing, sintering, extrusion and wire drawing. According to the silver tin oxide composite material prepared by the method, the granularity of the oxide is fine and uniformly distributed, the electrical performance is enhanced, meanwhile, the influence on the processing performance is small, the cost and process loss of the preparation material are not additionally increased, special equipment does not need to be designed, the silver tin oxide composite material is almost universal with existing production equipment, the whole process is environment-friendly, and the method has a good application prospect.

This application provides a method for suppressing inrush current, a parallel system, electronic equipment, and a readable storage medium. The method includes: through a master-slave cooperative control mechanism, the master calculates the global closing point and broadcasts a synchronization command; the parallel system state switches from a conventional parallel operation state to a master-slave cooperative switching state; each slave performs delay compensation based on its own relay parameters; and finally, the EPS relays of multiple machines achieve synchronous closing at the peak point of the inverter output voltage, thereby suppressing the inrush current caused by the EPS port transformer and the circulating current between the inverters. This application's method breaks through the traditional parallel system's synchronous command execution mode, establishing a target synchronization and distributed triggering mode. This application ensures that all EPS relay contacts can achieve high-precision synchronous closing at the voltage peak point.

The invention relates to the technical field of power distribution network monitoring, in particular to a low-voltage transformer area system dynamic monitoring method based on topology recognition, which comprises the following steps: S1, timing; s2, acquiring active power data of 96 points; s3, monitoring the state of the power grid, judging whether topological calculation needs to be started or not, if yes, entering S4, and if not, continuing monitoring; s4, selecting a transformer area which needs to start slope separation calculation to carry out topological calculation; and S5, comparing the calculated topology result with the previous topology result, updating if there is a difference, and performing abnormal line loss analysis if there is no difference but the transformer area has a high loss condition. According to the power grid state, topology identification calculation is automatically started, the superior-subordinate relationship of the measurement equipment can be sorted out only by using the electric quantity or the power value of the measurement equipment in the topology identification calculation process, difference comparison is performed based on a topology calculation result, the line loss condition is judged, and dynamic monitoring is realized.