44results about How to "Ensure monitoring accuracy" patented technology

The invention provides a steel rail or bridge displacement monitoring device for a fiber Bragg grating transformation ring. The steel rail or bridge displacement monitoring device consists of a fixing clamp assembly, a connection assembly, a fiber Bragg grating transformation ring assembly, a pull rod assembly and a sensor shell device. One part of the steel rail or bridge displacement monitoring device is fixedly arranged on a steel rail or a beam body to be measured of the bridge, and the other part of the steel rail or bridge displacement monitoring device is fixedly arranged on a ballastless rail bed or a bridge reference beam body. The two parts of the steel rail or bridge displacement monitoring device are connected through the connection assembly. Two fiber Bragg gratings with different wavelengths are vertically cured on a rigid round ring. Force generated by that a target to be measured is displaced is transmitted to the rigid round ring through a pull ring and a spring, so that the two fiber Bragg gratings are inversely stressed. A center wavelength is offset to an inverse direction, so as to obtain the displacement of the target to be measured by overlapping the wavelength offset values. Therefore, the optical signal aberration generated by directly sticking the gratings is avoided and the interference caused by an environment temperature is omitted. The steel rail or bridge displacement monitoring device is applicable to long-term online monitoring, and is sensitive, stable, reliable, compact in structure and convenient to repair and maintain.

The invention belongs to the technical field of agriculture, forestry and ecological environments, and particularly relates to a farmland greenhouse-gas monitoring sampling device. The farmland greenhouse-gas monitoring sampling device comprises a box and base which are matched in shape. An air drawing hole is formed in the box, a rubber plug is arranged on the air drawing hole, the base is of a circular-ring frame structure integrating an inner layer and an outer layer, and the corresponding box is of a cylindrical structure; the cross section of the base is a wedge, and the bottom of the base is in a cutter-opening shape; an annular sealing groove higher than the base is formed in the edge of the base, and the lower portion of the box is embedded into the sealing groove in a matched mode; the base is made from nylon. The farmland greenhouse-gas monitoring sampling device is small in volume, convenient to carry and transport and high in monitoring accuracy rate.

The invention relates to the field of secondary equipment monitoring, and particularly discloses a monitoring system and a monitoring method for secondary equipment of a power system. The method comprises the following steps of: performing global high-dimensional correlation feature extraction on various measurement value data acquired by secondary equipment deployed at a single power grid node and various data of a plurality of power grid nodes through a context-based encoder model, and calculating the distance between feature vectors to serve as a parameter topological feature matrix; further extracting associated information of the data sample due to the feature information and the irregular topological structure information by using a graph neural network, and calculating a label category evolution factor between the measured value topological feature vector and the measured value feature vector to serve as a loss function value training model; the accuracy of classification is improved. Therefore, each piece of power grid node data can be compressed, so that the monitoring accuracy and timeliness of the secondary equipment are ensured.

The invention relates to a high-accuracy website sensitive word detection method based on machine learning. The method comprises the following steps of performing rule matching on a to-be-detected file and the sensitive word database to obtain a document set containing sensitive words, processing and learning the training data to output a machine learning model, and then inputting the document setinto the model to obtain a website sensitive word detection result. Model training is carried out by combining a machine learning algorithm; sensitive word rule matching is firstly carried out on thecrawled website page, then machine learning automatic analysis is carried out on the output website after rule matching again, the data volume predicted by a machine learning model is reduced, the detection speed and accuracy are improved, and finally the possibility that the page contains sensitive words is obtained through statistical calculation. Due to machine learning, semantic analysis andcombined judgment with word segmentation meanings, the sensitive vocabulary recognition rate can be effectively improved, the monitoring accuracy can be ensured, and the labor cost of a supervision institution can be greatly reduced.

The invention discloses a lightning arrester online monitoring device and method. The device comprises a voltage-limiting sampling unit, an energy storage unit, a leakage current sampling, an over-voltage monitoring unit, a core processing module and a wireless transceiving module; the energy storage unit can collect and store the leakage current input by the voltage-limiting sampling unit when the lightning arrester is in normal work, thereby supplying power for the leakage current sampling unit, the over-voltage monitoring unit, the wireless transceiving module and the core processing modulewithout using the external power supply and laying a communication cable; the cost is saved under the condition of guaranteeing the monitoring accuracy and precision, and the power consumption is reduced; the communication function can be accomplished without being limited by the external condition; secondly, an aerial wakeup mode is improved by adding a query period field of a sender in a lead code and the inserted address information and channel information, and the power consumption of the lightning arrester monitoring device is further reduced.

The invention discloses a mobile black broadcast monitoring system and a monitoring method thereof. The monitoring system comprises a mobile monitoring terminal, a voice recognition server interactingwith the mobile monitoring terminal, and a manual monitoring and checking terminal. The mobile monitoring terminal is mainly composed of a digital receiver, an antenna connected with the digital receiver, and a monitoring device connected with the digital receiver. Before manual monitoring, the voice recognition technology is adopted to screen the audios containing the black broadcast keywords, so that the workload of manual monitoring is greatly reduced while the monitoring accuracy is guaranteed. The mobile black broadcast monitoring system has the great popularization value.

The invention provides a dosage monitoring device which comprises an ionization chamber, a temperature sensor, an air pressure sensor and a computing unit. A non-closed cavity is defined inside the ionization chamber. The temperature sensor collects environment temperature of the ionization chamber. The air pressure sensor collects environment air pressure of the ionization chamber. The computingunit is configured to determine a correction factor according to the environment temperature and the environment air pressure, wherein the correction factor is used for correcting a dosage value detected by the ionization chamber. The dosage monitoring device can be used for the linear accelerator.

The invention discloses a passive autonomous water mist high-efficiency fire extinguishing system for tunnels. The system comprises a communication control device, a central monitoring and control platform, a light-emitting diode (LED) display screen, a tunnel ventilation system, a high-efficiency water-based fire extinguishing water tank, a water mist nozzle, a sensor monitoring device, an activated carbon absorbing layer and a video monitoring device. Once a fire is confirmed to be true, a fire control center is immediately notified to dispose of the fire of the tunnel, and a message is displayed on the LED display screen at a place which is 2000 meters away from the tunnel for indicating that vehicles cannot enter the tunnel. On-site disposal personnel can send commands to control a fire extinguisher to act in the area with the fire in the tunnel and send commands to control a ventilation fan in the tunnel to be opened by means of the central monitoring and control platform. The passive autonomous water mist high-efficiency fire extinguishing system guarantees the monitoring sensitivity and accuracy as well as the high efficiency of implementation of fire extinguishing, therebygreatly improving the safety around the fire in the tunnel, and further greatly guaranteeing the lives and property in the tunnel.

The invention discloses a power transmission line galloping information reconstruction method based on compressed sensing, which comprises the following steps: firstly, constructing a measurement matrix, arranging nodes of a power transmission line and sensor sampling data selected by the nodes in the construction process, and then carrying out sparse change on an original signal by selecting a discrete Fourier transform basis to obtain a reconstructed signal; and acquiring an observation value through a measurement matrix, and recovering the process of an original signal through an optimization problem. According to the method, the galloping information can be recovered through the information sensing nodes in limited lines, so that the interference of excessive arrangement of the sensing nodes on the galloping information is reduced.

The invention discloses a full-spectrum water quality online monitoring device. The device comprises a monitoring control host and a sensing probe electrically connected with the monitoring control host, the monitoring control host comprises a data display unit, a data output unit, a control unit, a data processing unit, a light source unit, a standard-added calibration unit and an analysis unit,the sensing probe comprises a probe body, an analysis chamber and a reflection unit, a beam splitter is arranged in the probe body, a transition position of the probe body and the analysis chamber isprovided with a plurality of photoscopes, a transition position of the analysis chamber and the reflection unit is provided with a plurality of arc reflectors, and a temperature sensor is arranged inthe analysis chamber. According to the device, a light source is externally arranged in the monitoring control host, a deuterium lamp is adopted, ultraviolet, visible and near-infrared broadband spectrums are generated, capacity control of the light source can be performed, and high-precision monitoring and analysis of multiple monitoring objects can be realized; and the arc reflectors are adoptedso that multiple times of reflection absorption of the spectrum in the analysis chamber can be realized, the absorption optical path is increased, and the analysis resolution of the device is improved.

The invention provides a construction method of a monitoring system based on a T-CPS system. The construction method comprises the following steps: dividing an urban traffic system into a plurality of regional systems; connecting the regional systems according to the road connection number and the correlation between the regional systems so as to establish a global T-CPS system; setting a corresponding monitoring strategy according to the traffic congestion degree in each regional system in the T-CPS system and / or the preset state level of the static traffic system structure; and parameterizing a monitoring result corresponding to the monitoring strategy. According to the invention, on the premise that the number of traffic monitoring facilities in each regional system is kept unchanged, the utilization rate of the traffic monitoring facilities in the whole monitoring system is effectively improved, and the urban traffic operation level is further improved.

The invention discloses a single-layer steel wire rope reel with a rope disorder prevention judgment device. The reel comprises a roller, a steel wire rope, bearing seats, a limit switch mounting rod and a rocker arm type limit switch; the roller is of a cylindrical roller structure, the steel wire rope is tightly wound on the circumferential face of the roller, the roller is arranged between the two bearing seats, the two ends of the roller are rotationally matched with the bearing seats on the corresponding sides respectively, one bearing seat is fixedly connected with the other bearing seat through the limiting switch mounting rod, a plurality of rocker arm type limiting switches are arranged in the middle of the limiting switch mounting rod and used for detecting the position of a steel wire rope wound around the roller. According to the design, the arrangement continuity of the steel wire rope can be monitored through the continuity of signals sent by the rocker arm type limiting switches, the situation that a driver manually monitors the arrangement of the steel wire rope while operating a crane is avoided, the system safety is improved, steel wire ropes with different diameters can be adapted, and the adaptation range of the system is effectively widened.

The invention discloses an underground engineering and deep foundation pit safety monitoring and early warning system. Instruments and equipment in a data monitoring system are directly installed at asite to be monitored generally, when the instruments and equipment are failed in the process of use, if the maintenance is not performed timely, the normal use of a detecting and early warning systemis affected, and the above problem is solved by the system. The system comprises a data monitoring module and an abnormality monitoring module, a power supply end and an output end of the data monitoring module are connected to an input end of the abnormality monitoring module, an output end of the abnormality monitoring module is connected to an alarm module to achieve the purpose of timely finding the failure of the detecting and early warning system for maintenance.

The invention discloses self-locking large and small flow intelligent detection control equipment. An outer impeller is arranged in a mounting cavity; a bush shaft is arranged at the center of the outer impeller; an inner impeller is arranged in the bush shaft; a rotating shaft is arranged at the center of the inner impeller; the top end of the rotating shaft is connected to a first transmission shaft through a spline structure; a water plugging cover is arranged at the lower end of the rotating shaft; a fine shaft is arranged at the lower end of the water plugging cover; the lower end of thefine shaft is connected in a lifting barrel in a sleeved manner; a water plugging ring is arranged in the bottom of the outer impeller; a bottom gear ring is arranged on the upper end surface of the water plugging ring; the lifting barrel is arranged in the fixed barrel; a slot is formed in the outer wall of the fixed barrel; a lifting cover is connected to the lower end of the fixed barrel in a sleeving manner; a jacking shaft is arranged at the center of the lifting cover; the jacking shaft is connected in the lifting barrel in a sleeved manner; a locking spring is arranged at the lower endof the jacking shaft; a magnetic conductive plate is arranged at the lower end of the lifting cover; and an electromagnet is arranged in the bottom of a mounting cavity. The self-locking large and small flow intelligent detection control equipment disclosed by the invention not only can monitor water flows of different sizes, but also can lock open and close of a water path, and is high in detection precision and stable and reliable to operate.

The invention relates to the related technical field of pollution source monitoring, in particular to a fixed pollution source VOCs online sampling, calibration and pretreatment system which comprises a sampling unit, a calibration device and a pretreatment system, and the sampling unit comprises a gas collection channel, a filter assembly, a mounting head, a pipeline connector and a heating structure. The gas collection channel is of a tubular structure; a pollution source VOCs online sampling, calibration and pretreatment system composed of a sampling unit, a calibration device and a pretreatment system is arranged, and the sampling unit is composed of a gas collection channel, a filter assembly, a mounting head, a pipeline connector and a heating structure. Therefore, the gas flowing into the gas collection channel is preheated through the heating structure, so that the sample gas is always kept in a constant high-temperature state, the loss of the sample gas caused by adsorption, condensation and the like is prevented, and the purpose of improving the sample detection accuracy is achieved.

The invention belongs to the field of radiation quantity monitoring equipment, particularly relates to plastic scintillator radiation quantity monitoring equipment based on wireless communication, and aims to solve the problems that the existing plastic scintillator radiation quantity monitoring equipment is low in assembly performance, inconvenient to adjust the use size of the monitoring equipment, relatively fixed in structure, inconvenient to automatically clean the surface of a monitored body and poor in reliability. In order to solve the problem that the monitoring stability and accuracy cannot be guaranteed, the invention provides the following scheme that the device comprises a monitoring control base, a plurality of plastic scintillators, two protective side plates, a cleaning assembly and a plurality of mounting assemblies, and a circuit board and a wireless communicator are fixedly mounted on the monitoring control base; and the plurality of plastic scintillators are arranged on the monitoring control base. The plastic scintillator radiation quantity monitoring equipment is high in assembling performance, the use size of the monitoring equipment is convenient to adjust, the structure is flexible, the surface of a monitored body can be automatically cleaned conveniently, and the monitoring stability and accuracy can be guaranteed.

The invention relates to a safety monitoring method and device for an assembled bridge with a small and medium-sized span, belongs to the technical field of bridge monitoring, and solves the problems in the prior art that the monitoring indicators are not well targeted and the monitoring cost is high. The method includes selecting the first monitoring point, the second monitoring point and the third monitoring point of the bridge to be monitored; respectively measuring and obtaining the strain data at the first monitoring point, the deflection data at the second monitoring point and the Acceleration data, and obtain the transverse correlation coefficient of the adjacent two girders of the bridge to be monitored based on the measured strain data, and obtain the natural frequency of the bridge to be monitored based on the measured acceleration data; the obtained strain The data, deflection data, transverse correlation coefficient or natural frequency are compared with the corresponding preset thresholds to obtain the safety monitoring results of the bridge to be monitored. This method proposes a complete monitoring system for small and medium-span prefabricated bridges, which improves monitoring accuracy and effectiveness while reducing monitoring costs.

The invention belongs to the technical field of tunnel monitoring, and particularly relates to a tunnel convergence deformation on-line monitoring system and method. The method comprises the steps of: a data collection step: collecting construction data and geographic data of a tunnel; a point location analysis step: analyzing the construction data to obtain a scanning point location, and analyzing the construction data and geographic data to obtain a special monitoring point location; a monitoring installation step: installing a scanning device at the scanning point location, and installing a monitoring sensor at the special monitoring point location; a strain analysis step: performing overall convergence analysis according to scanning data of the scanning device, and performing special convergence analysis of the special point location according to feedback data of the monitoring sensor; and extracting a convergence analysis result of the special monitoring point location in the overall convergence analysis, comparing the convergence analysis result with the corresponding special convergence analysis, and if the comparison result exceeds a preset value, sending out an abnormality prompt. The monitoring convenience can be improved on the basis of controlling the cost.

The invention provides a sediment particle size monitoring device for river flow monitoring, and relates to the technical field of sediment particle size monitoring. The sediment particle size monitoring device for river flow monitoring comprises an annular piece with a hollow interior; at least four mounting frames are uniformly and fixedly connected to the inner wall of the annular piece in the circumferential direction, cylinders are hinged to the mounting frames, the ends, facing the mounting frames, of the cylinders communicate with the interior of the annular part through first hoses, piston parts are movably arranged in the cylinders, and movable rods are fixedly connected to the piston parts; the movable rod penetrates through the other end of the barrel, and a straight plate is hinged to the end, located outside the barrel, of the movable rod; the regular polygon formed by all the straight plates can be proportionally reduced, so that silt at the cross sections of different areas can be conveniently monitored, the application range is wide, a monitoring management mechanism does not need to reserve monitoring devices of multiple models, the use is very flexible, and the use cost is further reduced.

The invention discloses an assembly type steel support axial force monitoring assembly. The assembly type steel support axial force monitoring assembly comprises a fixed part, a monitoring element and a movable part, wherein the fixed part is fixed at the end part of a steel support and provided with a central sleeve extending outwards along the axial direction of the steel support; the monitoring element is placed in the central sleeve; and the movable part is provided with a jacking pipe which is matched with the interior of the central sleeve and is provided with a sealed end part, and the jacking pipe is inserted into the central sleeve. According to the assembly type steel support axial force monitoring assembly, the monitoring element is arranged in the central sleeve of the fixed part, and the jacking pipe of the movable part is inserted into the central sleeve; the fixed part compresses the movable part under the action of the axial force of the steel support, meanwhile, the jacking pipe compresses the monitoring element under the action of the counter-acting force, real-time monitoring of the axial force of the steel support is achieved, the monitoring element is arranged inside, installation is stable, the monitoring element is not affected by the external environment, and monitoring data are accurate; the whole structure is convenient to disassemble and assemble and can be repeatedly used; and the steel support and a steel enclosing purlin are in matched contact through the center sleeve and the jacking pipe, and the steel support is not prone to falling off.

The invention discloses an engineering pile machine monitoring system and a monitoring method applying the system. The system is matched with an engineering pile machine, and the system comprises: a driver identity verification module used for verifying the identity of a driver and preventing illegal operation of illegal personnel; a video monitoring module which is used for monitoring the operation behavior of the driver and giving an alarm to remind the driver of violation operation; a GPS positioning module which is used for monitoring the current position and the moving track of the pile machine in real time; a construction data monitoring module which is used for monitoring and collecting construction data in the operation process of the pile machine; and a mechanical operation state monitoring module which is used for monitoring and analyzing the action information and the operation state of the pile machine. According to the invention, multiple items of data in the operation process of the engineering pile machine can be monitored in real time, the working condition of each engineering pile machine in a construction site is mastered in an automatic and intelligent mode, equipment maintenance personnel are helped to find possible problems in time, and continuous and stable operation of the pile machine is guaranteed.

The invention belongs to the technical field of agriculture, forestry and ecological environment and particularly relates to a small static chamber for farmland greenhouse monitoring and sampling. The small static chamber comprises a chamber body, an extractor vent with a rubber plug is arranged in the chamber body, and an atmosphere equalizing valve which is of a vent pipe 3-4mm in diameter and inserted in the chamber body is fixedly mounted on the chamber body; the chamber body is 1.10-1.28L in size; in the small static chamber, the vent pipe is vertically arranged at the top of the chamber body, a clamp platform is arranged between the insert end of the vent pipe and the top of the chamber body, and a pressure head is fixedly connected between the external extension end of the vent pipe and the top of the chamber body in a threaded manner. The small static chamber is small in size, convenient in carrying and transportation and high in monitoring accuracy.

The invention provides a fixing device of a newborn percutaneous finger pulse oxygen monitoring probe. A circular ring is fixedly connected to the outer surface of the upper end of a rectangular net-shaped belt, and a clamping mechanism is in threaded connection with the interior of the circular ring; and the clamping mechanism is composed of a disc and semicircular plates, the number of the semicircular plates is two, the two semicircular plates are symmetrical front and back, hinges are movably connected between the positions, close to the middle, of the outer surfaces of the front ends of the semicircular plates and the disc, semicircular grooves are formed in the positions, close to the two ends, of the outer surfaces of the rear ends of the semicircular plates, and arc-shaped long grooves are formed in the positions, close to the position between the two semicircular grooves, of the outer surfaces of the rear ends of the semicircular plates. According to the device, the probe canbe conveniently and completely attached to the skin of a newborn, falling off is avoided, monitoring accuracy is ensured, medical errors and medical accidents are avoided, medical safety quality is improved, and stress points can be dispersed on the surface skin of the newborn by the net-shaped structure and are not excessively concentrated, so that the newborn is prevented from being bruised.

The invention discloses a water and soil conservation monitoring device with a good stabilization effect. The device comprises a mounting base, a data line and a base, wherein the data line is arranged on the lower side of the mounting base, the base is arranged at the end, far away from the mounting base, of the data line, and a circular pipe is arranged on the upper side of the mounting base. The water and soil conservation monitoring device has the beneficial effects that through a No.1 anemometer, a No.2 anemometer, a No.3 anemometer and a No.4 anemometer which are arranged, the monitoringdevice can monitor the wind speeds at different heights on the ground, so that the monitoring accuracy of the wind speed data is ensured, by arranging a solar radiation sensor, the radiation quantityof solar energy is monitored, thus the device can calculate the influence of the radiation of the solar energy on water and soil loss, through an angle rotating motor and an electric push rod which are arranged, a solar panel of the monitoring device can be automatically adjusted along with the irradiation angle of the sun during photoelectric conversion, and thus the photoelectric conversion efficiency is guaranteed.

According to the invention, a three-dimensional fluorescence signal is emitted by a three-dimensional fluorescence light source through a transmission cable; the fluorescence signal is distributed andtransmitted to a sensing unit and a next optical path adapter through an optical path adapter; the fluorescence signal transmitted by the plurality of optical path adapters are transmitted to a receiving unit through a wireless network bridge; a water quality three-dimensional fluorescence monitoring system comprises a sample collection and detection module, a data receiving and processing module, a judgment module and an alarm unit, the sample collection module comprises a sampling device, a three-dimensional fluorescence detection device, a cleaning mechanism and a result feedback unit, andthe data receiving and processing module comprises a signal receiving unit, a data analysis unit and a data output unit. The system is ingenious in design, stable in operation and high in water quality analysis accuracy, water quality monitoring is achieved through three-dimensional fluorescence, signal transmission is achieved through a novel light path, the stability of information transmissionis guaranteed while the monitoring accuracy is well guaranteed, and certain guarantee is provided for accurate water quality monitoring.

The invention provides a high-efficiency collecting device for petrochemical pollutants discharged into sea. The device comprises a water sample collecting device, a purging device, a concentrating device, a lighting module, a GPS module, a controller and a memory. According to the high-efficiency collecting device for the petrochemical pollutants discharged into sea, water samples are regularly monitored and collected from setpoints of monitoring area of water sources, petrochemical pollutants are effectively extracted from water samples, safety factor and precision factor are high, pollutionsources and pollution status can be discovered timely, and early warning of pollution is achieved.

The invention discloses a warehouse intelligent supervision system based on Internet of Things data management, which comprises a plurality of monitoring assemblies, a warehouse management real-time supervision center module, a cloud data memory module, a warehouse center prompt module and a blacklist recording module, and is characterized in that the periphery of a warehouse center is provided with a plurality of monitoring assemblies; and the data received by the warehouse management real-time supervision center module is transmitted to the warehouse management conversion program module through the wireless area network, so that the real-time supervision work of the user is met. According to the intelligent warehousing supervision system based on Internet of Things data management, recognized crowd behavior characteristics are accurately recognized through a data conversion matching program module, and corresponding actions of fixed personnel are accurately analyzed in combination with a behavior characteristic analysis module and a face recognition module; and re-analysis is carried out through the abnormal data secondary identification module and the basic data secondary identification module, so that when an abnormal state occurs, the storage center end is notified to carry out warning and reminding in time.