28results about How to "Accurate time" patented technology

The invention discloses an emergency fire fighting question answering method and system based on the AI large language model technology and a storage medium, and relates to the technical field of artificial intelligence, the emergency fire fighting question answering system comprises a front-end module, an AI preprocessing thread pool, a knowledge base module and a large model calculation engine module, the AI preprocessing thread pool receives a service request sent by the front-end module, and sends the service request to the AI preprocessing thread pool; different task threads are distributed, a knowledge base of a corresponding region category is automatically called according to the region category input by a service request to perform content similarity retrieval, knowledge content data obtained through retrieval and the corresponding service request are sorted and then uniformly sent to the large model calculation engine module supporting parallel processing to perform analysis and calculation, and the large model calculation engine module is used for performing analysis and calculation on the knowledge content data and the corresponding service request. By using the technical means of the invention, the user does not need to think what the keyword of the current question is, and can completely organize the question, directly ask the question, automatically query the local professional knowledge base and give professional and accurate answers according to the actual situation of the site, so that real barrier-free communication is realized.

The invention provides a double-antenna GNSS (Global Navigation Satellite System)-assisted navigation attitude measurement method. Real-time high-precision navigation positioning orientation is realized through the following steps of: constructing a coordinate system projection matrix by utilizing the height difference of double antennas; calculating course information delay time of satellite navigation and inertial navigation, and caching inertial navigation data; finding an inertial navigation course at a corresponding moment in the cache according to the delay time, and converting a coordinate system through a projection matrix; comparing the converted inertial navigation course with the satellite navigation course, and calculating an error; after effectiveness judgment is carried out on the error, a Kalman filter is adopted to carry out filtering iteration, and optimal estimation of an error term is obtained; and correcting the original navigation result according to the filtering result.

The utility model discloses energy-saving and environment-friendly feed drying equipment, relates to the technical field of feed drying, and solves the problems that part of feed is easily not dried in place, the processing quality is influenced, or the drying time is too long, and energy is wasted due to the lack of condition monitoring in the actual feed drying process. Therefore, the problem that the actual drying time is difficult to accurately control by workers is solved. The utility model discloses energy-saving and environment-friendly feed drying equipment which comprises a drying box body, the drying box body is of a rectangular block structure with the hollow interior. The left side and the right side of the bottom in the drying box are each fixedly provided with a set of mounting plates of a rectangular plate structure. A group of cylindrical sliding rods are fixedly arranged on the front side and the rear side of the top of each group of mounting plates, and springs are arranged on the outer sides of the sliding rods in a sleeving manner; a sliding plate of a rectangular plate structure is arranged among the four sets of sliding rods in a sliding connection mode. Therefore, the drying time is more accurate, the phenomenon of energy waste caused by too long drying time is avoided, and the purposes of energy conservation and emission reduction are achieved.

The invention belongs to the technical field of data processing, and relates to an enclosed fuse with an intelligent monitoring function, which comprises an acquisition module and a data acquisition on-line transmission module which are electrically connected, the acquisition module is used for acquiring data, and the data acquisition on-line transmission module is used for receiving the data acquired by the acquisition module and transmitting the data to the acquisition module. The acquisition module comprises a first MCU, a current detection circuit, a temperature detection circuit and a state detection circuit, the current detection circuit, the temperature detection circuit and the state detection circuit are electrically connected with the first MCU, and the data acquisition on-line transmission module comprises a second MCU, a Beidou module, a wireless communication module, an LED indication module, a power supply module and a serial port communication module, and the Beidou module, the wireless communication module, the LED indication module, the power supply module and the serial port communication module are electrically connected with the second MCU. The system can carry out real-time data acquisition and transmission, has the capability of efficient data processing and analysis, has accurate time and position information, can realize remote monitoring and alarm functions, and is easy to expand and upgrade.

The invention provides unmanned aerial vehicle mounted laser radar equipment capable of adaptively selecting a GNSS signal source and an unmanned aerial vehicle. An antenna power supply module supplies power to a special GNSS antenna, outputs a current value as a preset value under the condition of entering a short-circuit protection state, and outputs a current within a preset current value range under the condition of normally supplying power to the special GNSS antenna; the current detection module detects a current value input into the special GNSS antenna in real time; the control module acquires a current value detected by the current detection module in real time, and controls the single-pole double-throw switch to be switched to the unmanned aerial vehicle GNSS source when the current value is a preset value or zero, so that the laser radar module and the data processing unit are communicated with the unmanned aerial vehicle GNSS source; and under the condition that the current value is within the preset current value range, the single-pole double-throw switch is controlled to be switched to the special GNSS antenna, so that the laser radar module and the data processing unit are communicated with the special GNSS antenna.

The invention relates to the technical field of power distribution and utilization and communication, in particular to a power distribution and utilization network timing method, device, system and chip based on multi-mode communication, and the timing method comprises the following steps: a timing node and a timed node are respectively located on the same layer, adjacent layer or cross-layer, and first timing information and second timing information are obtained, and then performing time correction on the node to be subjected to time correction based on the first time correction information and the second time correction information. According to the invention, the concept of a reference node is introduced, the reference beacon sent by the reference node and simultaneously received by the time calibration node and the calibrated node is taken as the reference moment, and the time values which are recorded at the reference moment and are counted by the local clock are respectively taken as the first time calibration information and the second time calibration information; or the specified zero-crossing time which is relatively stable in position, predictable, high in repeatability and easy to detect is used as the reference time, so that the time correction precision of the power distribution and utilization network node during clock synchronization is effectively improved, and the reliability and the stability of the whole power distribution and utilization network are improved.

The invention provides a database optimization method and device based on a Paas cloud platform, equipment and a storage medium, and relates to the technical field of database optimization. According to the invention, multi-version concurrency control MVCC based on distributed transactions is adopted. The MVCC enables consistency and isolation of data by assigning a unique timestamp to each transaction, and using these timestamps in read and write operations. When one transaction reads data, the transaction can only see the data submitted before the beginning of the transaction, so that expired data can be prevented from being read. When a plurality of transactions write data at the same time, the MVCC uses the timestamps to ensure that write operations among the transactions do not interfere with each other, so that the consistency of the data is kept. If there is a conflict, a final data write result is determined using a timestamp-based priority. By using the database optimization technology, better data consistency guarantee can be provided, and problems caused by inconsistency are reduced.

The invention relates to the technical field of satellite communication, and discloses a logistics transportation position monitoring method and system assisted by satellite communication. The method comprises the following steps: calculating a satellite-ground distance and a line-of-sight unit vector according to a satellite position coordinate and a terminal estimation position coordinate, and generating a baseband signal based on a three-axis speed component and the line-of-sight unit vector; calculating a target peak value based on the baseband signal, and when the target peak value exceeds a noise threshold, extracting a pseudo-range measurement value and solving a three-dimensional space positioning solution with the satellite position coordinates; calculating a path constraint position from the three-dimensional space positioning solution to the optimal path section; and accumulating a reference mileage from a starting point to the optimal path section, calculating an accumulated driving mileage, converting the path constraint position, packaging the path constraint position and the accumulated driving mileage into a monitoring data packet, and reporting the monitoring data packet to a logistics monitoring platform. According to the invention, high-precision logistics position monitoring in a mobile scene is realized, and the monitoring precision and scheduling efficiency of logistics transportation are effectively improved.

The utility model discloses a temperature control device for bupleurum injection sterilizing equipment, which comprises an injection sterilizing box, a placing frame, a liquid storage bag, a ball nut, a temperature sensor, a temperature measuring probe, a mounting plate and a temperature control plate, the placing frame is mounted on the injection sterilizing box, a rotating rod is mounted on the injection sterilizing box, and the temperature control plate is mounted on the rotating rod. A bevel gear B is installed at one end of the rotating rod, a lead screw is installed on the injection sterilization box, a bevel gear A is installed at one end of the lead screw, the bevel gear A is meshed with the bevel gear B, a ball nut is installed on the lead screw in a threaded mode, and the ball nut is connected with an installation plate installed on the injection sterilization box. According to the liquid medicine bag temperature control device, the temperature control device can carry out actual temperature detection on the interior of a liquid medicine bag, so that the temperature control device can calculate the sterilization operation time more accurately, and the sterilization quality and effect are prevented from being influenced.

The application relates to the technical field of image acquisition, and discloses a multi-camera time synchronization method and device, computer equipment and a storage medium, the method comprising the following steps: acquiring a first image and a second image, the first image being obtained by a first camera performing image acquisition on a target screen, the second image being obtained by a second camera performing image acquisition on the target screen, the target screen being used for sequentially displaying different events, the target screen comprising a first region and a second region, and the gray scale of the image displayed by the first region being different from that of the image displayed by the second region in adjacent events; determining to-be-recognized regions corresponding to the first region and the second region in the first image and the second image; calculating a clock offset of the first camera and the second camera according to the gray scale values of the to-be-recognized regions; and debugging the first camera and / or the second camera according to the clock offset, so that the shooting time of the first camera and the second camera is synchronized. According to the application, the cost of multi-camera time synchronization is reduced.

The application relates to the technical field of data processing, and discloses a forestry carbon sink satellite remote sensing data correction method. The method is based on a satellite transit time window to implement multi-source time synchronization collection on satellite-borne, airborne and ground measured data, combines micro-meteorological data, digital elevation model data and crown laser radar data to simulate carbon sinks at different elevations at a single time point, and completes simulation correction through remote sensing radiation transmission coupling and eddy correlation data assimilation; further, according to the deviation of measured values and simulated values at different elevations, elevation-specific correction parameters are calculated, a three-dimensional correction parameter field of space-time-elevation is constructed and is adaptively updated; and finally, the correction parameters are used to uniformly correct, weightedly fuse and optimize residuals of satellite-borne data and airborne data. The application can improve the correction accuracy, spatial adaptability and processing efficiency of multi-source forestry carbon sink detection data under complex terrain conditions.

The present invention relates to the technical field of electric energy distribution, and discloses an electric energy distribution system and method based on dual-mode communication, including: according to a set of charging and swapping stations, adopting a data inference strategy to obtain the model type and quantity of batteries configured in each charging and swapping station; setting a threshold distance for dividing the area where the charging and swapping stations are located; according to the charging and swapping station set and the threshold distance, adopting a regional division strategy to obtain a replacement area set; according to a replacement vehicle set and a replacement area set, adopting an optimal replacement strategy to obtain the optimal charging and swapping station for replacing the battery of the replacement vehicle; obtaining the charging and swapping stations included in the replacement area to form an execution station set; according to the execution station set and the execution path, adopting an electric energy scheduling strategy to coordinate the batteries of the charging and swapping stations with replacement vehicles. Through the scheduling of replacement vehicles, the battery resources of full power stations and qualified power stations are coordinated, the battery resource utilization rate is improved, and the service level and user satisfaction of the charging and swapping stations are improved.

The utility model belongs to the technical field of motorcycle engines, and relates to a gear shifting structure of a motorcycle engine, which comprises a gearbox body, a driving shaft in transmission connection with a crankshaft and an output shaft in transmission connection with a load are arranged in the gearbox body, and the driving shaft is in transmission connection with the output shaft through a gear shifting mechanism. The gear shifting mechanism comprises a gear set and a shifting fork changing the connecting state of the gear set, a stepping motor is arranged on the outer side of the gearbox body, a crank is arranged on a motor shaft of the stepping motor in a sleeved mode, the crank is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to the shifting fork, and the shifting fork is arranged on a guide rod in a sliding mode. The guide rod is parallel to the driving shaft and the output shaft, and the stepping motor drives the shifting fork to slide in the axial direction of the guide rod so as to complete the gear shifting action. According to the gear shifting structure of the motorcycle engine, automatic gear shifting of a motorcycle can be achieved.

This invention belongs to the field of vehicle scheduling and provides a method and system for battery swapping scheduling of unmanned mining trucks. The method includes: retrieving mine map information and equipment status information to obtain map resource data and equipment status data; performing a hash pre-caching query on the coordinates of the task to be scheduled based on the equipment status data to obtain cached path results; performing dynamic collision detection on the cached path results based on the map resource data to obtain valid path data; making a closed-loop decision on battery swapping demand based on the valid path data to obtain a battery swapping scheduling instruction; and scheduling the mining truck to be scheduled based on the battery swapping scheduling instruction. This invention significantly shortens the path calculation response time, dynamically adapts to changes in the mine environment, and ensures that the battery swapping scheduling decision is synchronized with the on-site execution status in real time.

The invention discloses a service system of a shared washing machine, which comprises an integrated platform and an equipment service terminal, and is characterized in that the equipment service terminal sends the brand model of equipment, a washing mode, parameter information of washed clothes and actual washing time to the integrated platform; the integrated platform processes the received multi-sample time information to obtain accurate washing time, and establishes a database for distinguishing the accurate washing time according to the equipment brand model, the washing mode and the parameter information of the washed clothes; and the equipment service terminal obtains the precise washing time corresponding to the brand model, the washing mode and the parameter information of the washed clothes from the database, and provides washing service for the user. According to the service system of the shared washing machine provided by the invention, the washing time is more accurate, the time for a user to take clothes is more accurate, and the use experience of the user is improved.

A method, system and edge server for determining production progress and order inventory, wherein the method for determining production progress includes: collecting video frames of the operation area of ​​the production link in the production line; performing image recognition on the collected video frames to determine the brightness of the operation area in the video frames; when the brightness of the operation area in the video frames is less than a preset brightness threshold, determining that the operation of the production link is completed, and obtaining the time when the operation of the production link is completed. The above scheme can realize non-intrusive, automatic and accurate judgment of production progress.

The invention relates to the technical field of geotechnical engineering, and provides a shale fault slippage mechanical property test device and a test method, the test device comprises: a confining pressure loading module for applying confining pressure to a rock core sample; the axial pressure loading module is used for applying axial pressure to the rock core sample; the water injection circulating module is communicated with a water injection hole in the rock core sample so as to apply water injection pressure to the rock core sample; the monitoring module is provided with an axial sensor, a radial sensor and an ultrasonic probe, the axial sensor is arranged between the two ends of the rock core sample in the axis direction of the rock core sample, the radial sensor is connected to the peripheral face of the rock core sample in a sleeving mode, and the ultrasonic probe is arranged on the periphery of the fault surface of the rock core sample. According to the shale fault slippage mechanical property test device and the test method, activation of shale fault slippage and an influence mechanism of the shale fault slippage on rock mechanical properties can be obtained, and a theoretical basis is provided for construction of oil production engineering.

The present application relates to a vegetation irrigation control method, device, equipment, storage medium and program product. The method comprises: during the vegetation growth season of artificial vegetation in a target area, obtaining the artificial vegetation transpiration contribution rate corresponding to the target artificial vegetation at the current growth stage, the artificial vegetation transpiration contribution rate is used to indicate the ratio of the actual transpiration amount to the potential transpiration amount of the target artificial vegetation at the current growth stage; when the artificial vegetation transpiration contribution rate is less than the natural vegetation transpiration contribution rate, determining to irrigate the target artificial vegetation and determining the target irrigation amount for irrigating the target artificial vegetation; wherein the natural vegetation transpiration contribution rate is the ratio of the actual transpiration amount to the potential transpiration amount of the target natural vegetation that grows and develops normally and grows well in the target area at the current growth stage.

A control circuit, smart watch and wearable device for automatic pointer correction, including a sensor module, a main control module and a drive module, which obtains the real-time position of the pointer at every preset time period and outputs a feedback signal, then obtains the real-time time according to the real-time position of the pointer, and outputs a drive signal when the difference between the real-time time and the standard time of the location exceeds a preset threshold, and finally corrects the real-time position of the pointer according to the drive signal, so that the real-time time displayed by the pointer is consistent with the standard time of the location. In this way, the pointer is positioned intelligently and adjusted and calibrated in real time; the control circuit can be universally applied to smart watches or other wearable devices to obtain accurate time in real time, has high practical value, and solves the problem of large travel time error caused by the inability to accurately position the physical pointer in the smart watch, which requires frequent manual correction in the existing pointer correction technology.

The invention discloses an FPGA-oriented single event effect software simulation method and system. The method comprises the following steps: determining a signal list which may generate a single event effect for an FPGA; a single-particle simulation module sets a single-particle injection position and time for the signal list; generating a test case for simulating single-particle injection according to the single-particle injection position and time; the single event effect simulation controller loads the test case into the FPGA and operates FPGA simulation; a result analysis module observes a corresponding FPGA signal at a single event effect injection moment; the result analysis module analyzes a single event effect injection simulation result and generates a traceable waveform; and after the test case is completed, the single event effect simulation controller controls the single event simulation module to generate a next test case until the test cases of all the signals in the signal list are completed. The single event effect simulation time can be greatly shortened, the single event effect simulation efficiency is effectively improved, and meanwhile the coverage range of single event effect simulation is widened.

The present invention relates to the technical field of 3D printing, and discloses a 3D printing device, including a housing, a wire feeding mechanism, a transmission mechanism, a spraying mechanism and a printing platform, the printing platform includes a base frame and a chain sprocket mechanism, the chain sprocket mechanism includes a first chain sprocket mechanism and a second chain sprocket mechanism arranged in parallel, the first chain and the second chain are both located on the upper part in a taut state, the first chain is located on the lower part in a relaxed state, the first driving wheel and the second driving wheel are fixedly connected by a first rotating shaft, the first driven wheel and the second driven wheel are fixedly connected by a second rotating shaft, the second rotating shaft is rotatably connected to the side wall of the base frame, the first chain and the second chain are fixedly connected by a horizontal plate, and a first gap is set between the horizontal plates; a plurality of card blocks that can be matched with the first gap are provided in the base frame, and a driving mechanism for controlling the up and down movement of the card blocks is provided in the base frame. The present invention facilitates the peeling of products and reduces damage to the products themselves.

A gas metering valve for gaseous fuel, having a housing (1) in which an inlet opening (7) and an outlet opening (8) for gaseous fuel are configured. In the housing (1) a gas chamber (5) is configured and connects the inlet opening (7) with the outlet opening (8) in such a way that a gas flow from the inlet opening (7) to the outlet opening (8) can be realized. In the gas chamber (5) an electrically operable shut-off valve (10) is arranged in order to interrupt the gas flow in the gas chamber (5), and between the shut-off valve (10) and the outlet opening (8) an electrically operable control valve (25) is arranged with which the gas flow between the shut-off valve (10) and the outlet opening (8) can be interrupted.

This invention discloses a method and system for detecting and evaluating the settlement of buried pipelines based on ground-penetrating radar (GPR). The detection method acquires B-Scan mask images of shallow-buried pipelines, extracts the overall and local characteristics of target hyperbolic reflection signal feature points in the images, removes singular points, performs curve fitting on all valid target hyperbolic reflection signal feature points, and calculates and scores the depth and wave velocity values ​​corresponding to the target feature points to obtain the pipeline burial depth. The evaluation method, based on the pipeline settlement detection results, identifies the location of maximum settlement deformation by using the angle formed by the height change between two points on the pipeline, and predicts the location where the risk of fracture in the detected section may occur. The detection system implements this detection method, and the evaluation system implements this evaluation method. This application solves the problem in engineering measurements where hyperbolic reflection signals with characteristic damage caused by electromagnetic wave attenuation and coupling cannot be effectively calculated, significantly improving the data's processability and analyzability.

The utility model belongs to the technical field of kitchen appliances, and discloses a small-size food processor which comprises a cup body, a shell matched with the cup body in a sealing mode, a motor arranged in the shell and located below the cup body and a handle located on the side portion of the cup body, a smashing device is arranged in the cup body, and a rotating shaft of the motor penetrates through the bottom wall of the cup body to be in transmission connection with the smashing device. The shell is provided with an air inlet and an air outlet which are located below the cup body, a first fan for pumping outside air into the shell is arranged at the air inlet, a second fan for pumping the air in the shell to the outside is arranged at the air outlet, and the first fan and the second fan are arranged towards the cup body. The first fan and the second fan jointly provide power for circulation of airflow, the heat dissipation efficiency of the cup body is improved, cooling of the cup body and slurry in the cup is accelerated, the waiting time needed by drinking of a user is shortened, and the use experience of the user is improved.

The invention discloses an automatic proportioning and adding system for machining, relates to the technical field of coolant proportioning, and is used to solve the problem that the existing automatic adding and proportioning system can only proportion the coolant according to a preset concentration when proportioning the coolant, and cannot automatically correct the coolant concentration according to the coolant usage data. The invention comprises an automatic proportioning module, a collection module, a control module and a correction module; the invention utilizes the automatic proportioning module to automatically proportion the coolant according to the demand, and the amount and time of adding the coolant are relatively accurate, and the cutting speed, cutting depth, cutting feed rate and cutting temperature in the coolant usage data can be collected through the collection module, and the concentration of the coolant is automatically adjusted according to these influencing parameters to achieve a better cutting effect, and at the same time, the proportion of the automatic proportioning module can be verified and calibrated according to the correction module to avoid abnormalities that are not discovered in time.

This utility model belongs to the field of switching valve technology, and in particular to a switching valve for a regenerative oxidation device. It includes a switching valve body, on which an inlet pipe and an outlet pipe are fixedly mounted. Multiple outlet pipes are provided. A receiving cavity is formed within the switching valve body, and the inlet and outlet pipes communicate with the receiving cavity. A switching valve block is rotatably mounted within the receiving cavity. An intermittent switching component is provided on one side of the switching valve body, and the intermittent switching component is connected to the switching valve block. This utility model replaces the traditional switching valve block, which requires manual operation of control keys to deliver waste gas to different heat storage bodies. This allows for more precise control of the switching valve block's waste gas flow direction switching, thus preventing the waste gas from switching to the next heat storage body too late and affecting the waste gas treatment effect of the previous heat storage body.

A mushroom stick bagging machine comprises a frame, a feed bin is arranged on the frame, a discharge pipe is arranged horizontally at the lower part of the feed bin, an upper sliding rod and a lower sliding rod are arranged on the frame parallel to the discharge pipe, the upper sliding rod is slidably connected to an upper sliding seat 1 and an upper sliding seat 2, the lower sliding rod is slidably connected to a lower sliding seat 1 and a lower sliding seat 2, the upper sliding seat 1 is fixedly connected to the lower sliding seat 1 through a connecting plate 1, the upper sliding seat 2 is fixedly connected to the lower sliding seat 2 through a connecting plate 2, the connecting plate 1 and the connecting plate 2 are connected through an adjustable connecting rod, the connecting plate 1 is connected to a driving device, the connecting plate 1 is adjustably fixedly connected to a sleeve, the connecting plate 2 is adjustably fixedly connected to an arc pressure plate through a right-angle folding plate 2, the right-angle folding plate 2 is adjustably fixedly connected to an advance and retreat mechanism, the bottom of the advance and retreat mechanism is fixed to a support plate, and the support plate is fixed to the connecting plate 2. The mushroom material of the present invention is compactly loaded, the quality and efficiency of bagging are improved, energy is saved, costs are reduced, and stability is good.

The application discloses artificial graphite negative active material, which satisfies: HL=TD*(OI+Dv50+Dv90) / (100*R*S), HL>2.0; wherein, TD is the tap density of the artificial graphite negative active material, unit is g / cm 3 ; OI is the orientation index of the artificial graphite negative active material; Dv50 is the 50% volume distribution particle size of the artificial graphite negative active material, unit is μm; Dv90 is the 90% volume distribution particle size of the artificial graphite negative active material, unit is μm; R is the disorder degree of the artificial graphite negative active material, ID / IG value of Raman test; S is the specific surface area of the artificial graphite negative active material, unit is m 2 / g. The artificial graphite negative active material has not only excellent high-temperature cycle performance, but also good rate performance.