19results about How to "Consistent time" patented technology

The invention discloses a coal mine dust diffusion intelligent monitoring method based on a distributed sensing network, and relates to the technical field of coal mine dust diffusion intelligent monitoring, and the method comprises the following steps: deploying a plurality of sensing nodes in a coal mine, each node having a function of collecting environmental data, a distributed sensing network is formed through a wireless or wired communication module, and when all nodes are started, a unique node identifier is issued through a central controller, and self-inspection is carried out. Through bidirectional delay calculation and a progressive fine tuning strategy, high-precision time synchronization is achieved, and it is ensured that timestamps of data such as dust concentration and airflow are accurate and reliable. And data jump caused by large correction is avoided through gradual fine adjustment, data continuity is guaranteed, and the precision of dust diffusion analysis and an early warning model is improved. A redundant node management and automatic switching mechanism improves the fault processing capability of the system, avoids a monitoring blind area, accelerates maintenance response through fault information reporting, and ensures stable operation of a monitoring network.

The invention provides a cumulative time error prediction method based on a time window LSTM model. The method comprises the steps of obtaining historical data of a sensor; performing time feature processing on the historical data, and selecting the historical data in a time window with a certain length as a time sequence; an LSTM model is used for modeling and training the time sequence, the input of the LSTM model is the sensor time error change condition in the time window, and the output of the LSTM model is the difference value between the sensor time at the current moment and the standard time; and correcting the sensor time according to a prediction result of the LSTM model. The actual time is independent from the time on the sensor, so that the time synchronization process is simplified; through selection of a time window, consumption of computing resources is remarkably reduced on the premise that prediction precision is guaranteed; through a correction mechanism, high-precision synchronization is achieved, computing resources are optimized, and it is ensured that sensor time and standard time are kept consistent.

The invention provides a distributed Internet of Things simulation system based on time synchronization, event driving and a message bus, and the system comprises a simulation model which is used for simulating different types of Internet of Things equipment or communication entities; the model management system is used for managing and controlling the life cycle, configuration and version management of the simulation model so as to ensure that the system adds, deletes or modifies different simulation models; the time synchronizer is used for ensuring that all nodes in distributed simulation keep a unified time reference so as to ensure the sequence and synchronous execution of events; the message bus is used for transmitting messages, events and data among the simulation nodes so as to ensure real-time communication and cooperation of each unit in the distributed system; and the front-end interface is used for monitoring a simulation process, operating equipment and checking simulation data in real time. According to the invention, the problem of low operation and maintenance efficiency of Internet of Things simulation software in the prior art can be solved.

The invention discloses a walking beam furnace for bars, and relates to the technical field of parts or accessories of more than one universal furnace, kiln, baking furnace or distillation furnace. The stepping type heating furnace for the bars comprises a ground and a stepping assembly. The stepping assembly is arranged on the ground and comprises a plurality of first rolling wheels, a plurality of first connecting pieces, a plurality of second rolling wheels, a plurality of slope pieces, a second connecting piece, a plurality of guide columns, a fixing piece, a connecting rod piece, a supporting piece, a plurality of guide holes and a supporting frame, and the slope pieces are welded to the upper end of the ground; a plurality of second rolling wheels roll along the inclined faces of the corresponding slope pieces correspondingly, a supporting frame in the stepping assembly is arranged, the multiple pieces of rod type steel are placed in grooves in the supporting frame, the situation that when the rod type steel is transferred, the rod type steel collides with one another, and consequently the rod type steel is damaged is avoided, gentle taking and gentle placing in the true sense are achieved, and the working efficiency is improved. And the service life of parts of the whole transfer device is prolonged.

The utility model relates to a circulating system of a roll type photographic film developing liquid pool and a developing machine with the circulating system, and the circulating system of the roll type photographic film developing liquid pool comprises a main liquid medicine tank body, an auxiliary liquid medicine tank body, a main liquid medicine outlet circulating pipe, an auxiliary liquid medicine outlet circulating pipe, a circulating communicating pipe, a one-way valve and a circulating pump, an overflow opening is formed in the upper end of the main liquid medicine tank body and communicated with the auxiliary liquid medicine tank body, the one-way valve is installed on the auxiliary liquid medicine outlet circulating pipe, the inlet end of the circulating communicating pipe is connected with the auxiliary liquid medicine tank body, the bottom of the auxiliary liquid medicine tank body and the upper portion of the main liquid medicine tank body, and the circulating pump is installed on the circulating communicating pipe. According to the utility model, the problem of unstable flushing quality caused by unstable liquid level in the prior art is solved by adopting a circulating mode of extracting liquid from the bottoms of the main liquid medicine tank body and the auxiliary liquid medicine tank body and then pumping the liquid medicine into the main liquid medicine tank body and combining with the arrangement that the liquid medicine in the main liquid medicine tank body flows into the auxiliary liquid medicine tank body through the overflow port at the top end of the main liquid medicine tank body after being full of the liquid medicine.

The invention discloses a renal paracentesis postoperation compression hemostasis device which comprises a support, a one-way timing force storage assembly, an automatic timing control assembly, a tightness limiting assembly, an opposite tightness assembly and a compression assembly, the one-way timing force storage assembly is arranged on the support, the automatic timing control assembly is fixedly arranged on the support, the tightness limiting assembly is fixedly arranged on the side wall of the support, and the opposite tightness assembly is fixedly arranged on the side wall of the support. The opposite elastic assembly is slidably arranged at the bottom end of the side wall of the support, and the pressing assembly is arranged on the support. The invention belongs to the technical field of renal puncture medical instruments, and particularly relates to a compression hemostasis device used after a renal paracentesis operation. The one-way timing force storage assembly, the automatic timing control assembly and the tightness limiting assembly are arranged, and the problem that the compression hemostasis device after the renal paracentesis cannot automatically and accurately control the compression time in the current market is solved.

The invention relates to a timing advance command value updating method and device, electronic equipment, a chip and a medium, and the method comprises the steps: obtaining a first uplink subcarrier interval corresponding to a BWP before switching and a second uplink subcarrier interval corresponding to the BWP after switching in a BWP switching event under the condition that the BWP switching event is detected; acquiring an unapplied timing advance command value under the condition that the first uplink subcarrier interval is inconsistent with the second uplink subcarrier interval; updating the timing advance command value according to the first uplink subcarrier interval and the second uplink subcarrier interval; wherein the updating processing of the timing advance command value ensures that the obtained timing advance adjustment amount determined by combining the uplink subcarrier interval is consistent with the expected timing advance adjustment amount of the network equipment after the BWP switching event occurs, thereby ensuring that the time when the signal of each terminal equipment arrives at the network equipment is consistent; the problems of signal interference and the like between the terminal devices are avoided, and the communication efficiency is improved.

The utility model relates to grouting and coating equipment, in particular to automatic grouting and coating equipment for a filter material. Comprising a transparent cover body, a workbench, a manipulator, a conveying assembly, a grouting assembly and a draining assembly; the workbench comprises a table top, the transparent cover body is arranged on the table top, the mechanical arm, the conveying assembly, the grouting assembly and the draining assembly are arranged in the transparent cover body, one end of the conveying assembly penetrates through the transparent cover body, and the conveying assembly can move towards the inside and the outside of the transparent cover body. The manipulator is used for moving the filter material among the conveying assembly, the grouting assembly and the draining assembly; material liquid drained by the draining assembly can be discharged out of the transparent cover body. According to the device, the filter brick coating process can be completed in a standardized and large-scale manner, and the time can be kept consistent in the grouting, feed liquid standing and emptying standing processes through the cooperation of the rotatable manipulator, the grouting assembly and the draining assembly, so that the product quality is stable.

The invention discloses a flexible AC / DC micro-grid adjustable element capacity configuration and operation optimization method and system, and the method comprises the steps: collecting power supply variable data, load data, energy storage data and meteorological data of a micro-grid, and carrying out the time matching, and forming a micro-grid load data set; constructing and training a micro-grid load demand prediction model based on the data set, and obtaining a load prediction result; constructing a capacity configuration optimization model of the adjustable elements of the micro-grid, wherein the capacity configuration optimization model takes balance power supply income maximization and power supply stability maximization as targets; and inputting a load prediction result into the capacity configuration optimization model, calculating to obtain a power distribution network capacity configuration scheme, and executing a micro-grid operation optimization scheme by adopting a rolling optimization mode. According to the method, various data and factors of the micro-grid are comprehensively considered, and efficient, economical and reliable operation of the micro-grid is realized through prediction and optimization.

This application discloses an image sensor, which includes a pixel array, a control module, and a data line. The pixel unit in the pixel array includes a first pixel circuit, a second pixel circuit, and a row selection transistor. The first pixel circuit and the second pixel circuit in the pixel unit are connected to the data line through the same row selection transistor. The first pixel circuit is connected to a shared pixel unit through a reset transistor, and the second pixel circuit is connected to the shared pixel unit through a reset transistor. The control module is used to output a target control signal to control the delay in entering the charge clearing stage when the pixel row including the pixel circuit completes quantization control. This ensures that the time or speed at which the image sensor establishes reset nodes between different pixel rows is kept as consistent as possible during row-by-row quantization, thereby enabling the image sensor to complete quantization better.

The invention belongs to the technical field of distributed measuring instruments, and particularly relates to a distributed measuring instrument synchronous control method and system, the system comprises an instrument host and a plurality of test terminals, different devices have different positions and are connected through a local area network; distributed measurement requires synchronous measurement of different test terminals, that is, all devices of the instrument start a test function at the same time. The method has the advantages that a complete synchronous control scheme from precise time service to precise control of the distributed measuring instrument is realized, the problem that precise synchronous control cannot be realized through software in current distributed measurement is solved, synchronous execution of operation between the instrument host and the test terminal in the distributed instrument can be realized, and the accuracy of measurement is improved. And the measurement precision of the distributed measurement instrument is improved.

The invention belongs to the technical field of target positioning, and particularly relates to a ground target positioning method fusing unmanned aerial vehicle multi-view images and laser ranging, which comprises the following steps: calibrating a camera and a pulse laser range finder, and determining internal and external parameters of each sensor and the mounting position and direction of the laser range finder; detecting a two-dimensional pixel coordinate of the tracking target; carrying out Gaussian positive calculation on a given geodetic coordinate system to a space rectangular coordinate system; preliminarily resolving the three-dimensional coordinates of the target; the pulse laser range finder works synchronously, measures the distance from a target to the unmanned aerial vehicle in real time, combines the target distance measured by the laser range finder as an input parameter with feature point position information detected by a camera of the unmanned aerial vehicle, comprehensively processes two-dimensional image coordinates and distance data, and calculates three-dimensional coordinates; based on the preliminary positioning result, the three-dimensional coordinates of the target are further optimized through an iterative algorithm; and carrying out Gaussian back calculation on a three-dimensional solution positioning result in the space rectangular coordinate system to a geodetic coordinate system for display.

The present application relates to the technical field of digital twinning, and discloses a digital twinning analysis method for the corrosion resistance of a suspension damping bushing. The method obtains vibration displacement time series data and multi-dimensional corrosion factor sequence data of the suspension damping bushing; the corrosion factor sequence is resampled in the time dimension with a vibration period as a reference, and the corrosion factor data is mapped to the spatial coordinate nodes of a three-dimensional digital twinning grid model of the bushing in the spatial dimension, to generate a spatio-temporal aligned multi-physical field fusion data set; the fusion data set is input into a digital twinning model, the correlation between stress transmission characteristics and corrosion medium diffusion characteristics between grid nodes is extracted by a graph neural network, and corrosion layer degradation state data is output. The present application eliminates the spatio-temporal misalignment error between vibration data and corrosion data, enables the digital twinning model to reflect the physical mechanism of alternating stress accelerated corrosion, overcomes the prediction distortion defects caused by independent channel analysis, and improves the accuracy and reliability of corrosion resistance evolution analysis.

The invention relates to a circulating system of a roll type photosensitive film developing liquid pool and a developing machine with the circulating system, and the circulating system comprises a main liquid tank body, an auxiliary liquid tank body, a main liquid outlet circulating pipe, an auxiliary liquid outlet circulating pipe, a circulating communicating pipe, a one-way valve and a circulating pump, an overflow opening is formed in the upper end of the main liquid medicine tank body and communicated with the auxiliary liquid medicine tank body, the one-way valve is installed on the auxiliary liquid medicine outlet circulating pipe, the inlet end of the circulating communicating pipe is connected with the auxiliary liquid medicine tank body, the bottom of the auxiliary liquid medicine tank body and the upper portion of the main liquid medicine tank body, and the circulating pump is installed on the circulating communicating pipe. According to the invention, the problem of unstable flushing quality caused by unstable liquid level in the prior art is solved by adopting a circulating mode of extracting liquid from the bottoms of the main liquid medicine tank body and the auxiliary liquid medicine tank body and then pumping the liquid medicine into the main liquid medicine tank body, and combining with the arrangement of enabling the liquid medicine in the main liquid medicine tank body to flow into the auxiliary liquid medicine tank body through an overflow port at the top end of the liquid medicine tank body after being full of the liquid medicine.

The invention provides a salvia miltiorrhiza yield-quality double-target prediction method based on a multi-source remote sensing image. The method comprises the following steps: acquiring and preprocessing an original optical remote sensing image and an original synthetic aperture radar image in a growth period of salvia miltiorrhiza in a target area to obtain a first optical remote sensing image and a first synthetic aperture radar image; performing structural feature enhancement on the first optical remote sensing image by using a multi-attribute constrained image enhancement diffusion model to obtain a second optical remote sensing image; detecting the key growth period of salvia miltiorrhiza based on the first synthetic aperture radar image and the second optical remote sensing image; taking the first synthetic aperture radar image and the second optical remote sensing image corresponding to the key growth period of salvia miltiorrhiza as the input of the multi-mode spectrum-structure inversion model, and predicting the content of effective components of tanshinone IIA and salvianolic acid B and the plant yield; evaluating the content of effective components of tanshinone IIA and salvianolic acid B and the plant yield, and outputting a salvia miltiorrhiza yield-quality estimation map and a grade distribution map of the target area.

This application belongs to the field of screen device technology, and particularly relates to a flip screen and an automobile. The flip screen includes: a control module; a power unit including an output shaft; a screen assembly including an assembly box and a screen, the screen being mounted in a mounting slot of the assembly box, the output shaft being drivenly connected to the assembly box, and the assembly box having a storage position; an angle detection mechanism for detecting the rotation angle of the assembly box; and at least one locking mechanism, wherein the control module controls the locking mechanism to lock the assembly box when it controls the output shaft of the power unit to flip the assembly box to the storage position. The technical solution of this application solves the problem that existing flip screens, after a period of use, suffer from flipping delay or rotational play, causing the locking tongue to extend prematurely before the flip screen has reached the storage position, resulting in poor consistency and coordination between the flipping and locking processes.

The present invention discloses a medical testing product, and in particular, relates to a urine cup detector. The urine cup detector has a sample feeding area on its main body, a push module 1 is provided at the lower end of the sample feeding area, a push module 2 is provided at one end of the push module 1, a sample rack is provided on the push module 2, a pushing module is also provided on one side of the sample rack, a reaction area is connected to one side of the pushing module, a push module 4 is provided at one end of the reaction area, a photo module 2 is provided on one side of the push module 4, a marking module is provided on one side of the photo module 2, a code scanning module is provided on the urine cup detector main body on the opposite side of the marking module, a push module 5 is provided on one side of the marking module, and a discharging area is provided on one side of the push module 5. The beneficial effects are as follows: the present invention can realize automatic detection, automatic judgment, high detection efficiency, and can ensure the consistency of time of each detection result, which brings great convenience to the normal work of the medical testing staff in the hospital.

The invention relates to a vehicle-road collaborative dynamic point cloud compensation fusion method, device and equipment and a medium. The time relation between the vehicle end point cloud and the roadside point cloud is calculated, the local motion field constructed based on the vehicle end point cloud is combined, explicit time compensation is carried out on the roadside point cloud acquired in a lagging mode, and the asynchronous point cloud can be accurately synchronized to the current moment of the vehicle end. On the basis, point cloud registration is carried out, and dynamic feedback correction is carried out on a motion model by using geometric residual errors, so that parameters of a motion field can be converged to an optimal state in real time, and compensation error accumulation caused by nonlinear motion of the target is avoided. And finally, the roadside point cloud is optimized according to the optimal parameter and is fused with the vehicle end point cloud, so that the system obtains the global point cloud with consistent time, consistent space and high-fidelity geometric structure, and the precision, stability and reliability of a V2X sensing result are improved.