88results about How to "Reduce monitoring error" patented technology

The invention discloses a storage battery surplus energy monitoring method and a monitoring device. The monitoring device comprises the following steps of: constructing a storage battery state space model; utilizing off-line sample data to carry out off-line identification on the state space model of a storage battery, and utilizing a model parameter off-line identification result and on-line sample data to carry out on-line identification on the state space model of the storage battery; constructing a state observer according to a model parameter on-line identification result and a storage battery state space model, and carrying out observation on a storage battery open-circuit voltage; and obtaining the surplus energy of the storage battery according to the corresponding relation of the storage battery open-circuit voltage and the surplus energy of the storage battery. The monitoring method and the monitoring device provided by the invention can carry out monitoring on the surplus energy of the storage battery through a method of the on-line identification model parameter, effectively reduce storage battery time-varying nonlinear characteristic, the influence of measuring errors and noises and the like on a surplus energy monitoring result, improve monitoring accuracy, reduce measuring errors, and strengthen the instantaneity of the monitoring.

The invention relates to a hydroacoustic transducer, in particular to a micro-electromechanical vector hydrophone which solves the problem that the enhancement of the overall performance is affected by the encapsulating structure of the existing vector hydrophone. The micro-electromechanical vector hydrophone comprises a sensitivity-conversion micro-structure, a support for fixing the sensitivity-conversion micro-structure, and an encapsulating housing covering the sensitivity-conversion micro-structure and hermetically fixing the support, wherein, the sensitivity-conversion micro-structure comprises a cross-shaped cantilever beam structure and a miniature cylindrical body vertically fixed in the center of the cross-shaped cantilever beam structure; conversion elements are arranged at the ends of the four beams of the cross-shaped cantilever beam structure; the encapsulating housing is a sound-transparent rubber cap made of polyurethane encapsulating materials; and polyurethane for fixing the top end of the miniature cylindrical body and the sound-transparent rubber cap is encapsulated at the top of the sound-transparent rubber cap. The invention increases the sensitivity of the hydrophone, improves the frequency response thereof and ensures the high signal-to-noise ratio at low frequencies by improving the encapsulating structure and replacing the conversion elements of the sensitivity-conversion structure, so that the hydrophone can show excellent performance.

The invention provides a vehicle-mounted type electromagnetic radiation on-line monitoring system which comprises an electromagnetic radiation monitor (comprising a monitor main machine and a probe), a data acquisition and transmission device and a lift control device; the probe is used for detecting an electromagnetic wave signal of a detection space environment and sends the signal to the monitor main machine; the main machine is used for receiving the electromagnetic wave signal and processing the electromagnetic wave signal to obtain electromagnetic radiation data; the data acquisition and transmission device is in fiber connection with the monitor main machine and used for receiving the electromagnetic radiation data and sending the electromagnetic radiation data to a monitoring center; the lift control device is used for monitoring rising and falling of the monitor so that the probe can be far away from a monitoring vehicle top metal body and lowers the probe when monitoring is not performed and normal driving of a monitoring vehicle is facilitated. The vehicle-mounted type electromagnetic radiation on-line monitoring system has the advantages that monitoring can be performed in real time in the driving process of the monitoring vehicle, the operation is simple, the monitoring efficiency is improved greatly, and the lift control device is used for reducing the effect of the vehicle top metal body on the probe so that a measurement result is more accurate.

The invention discloses an alone old people automatic monitoring system based on Internet of Things. The alone old people automatic monitoring system comprises an old people living environment monitoring module, a falling-down monitoring module, a heart rate monitoring module, an alarming module and a community module; all-directional living monitoring is carried out on old people by utilizing a temperature sensor, a humidity sensor, a flame sensor, a photosensitive sensor and a smoke module; a three-axis angle sensor and a three-axis accelerated speed sensor, and a gyroscope are combined to judge a falling-down condition of the old people; the heart rate of the old people is detected by a pulse sensor; monitored falling-down and heart rate conditions are stably combined to judge whether the old people are at a dangerous state or not; other people are announced to help to alarming and do first aid through a voice alarming function in the alarming module, and a recording function can obtain scene evidences; a GPRS (General Packet Radio Service) short message reports current positioning information of patients to guardians; a wearing position of wearing equipment is close to a hip bone, the monitoring errors are reduced and the monitoring accuracy is improved.

The invention discloses a flood prevention consultation monitoring device and method based on the Internet of Things, relates to the technical field of flood prevention consultation monitoring, and solves the technical problem that the flood prevention accuracy is reduced due to the fact that regional analysis cannot be performed in the prior art.A region analysis unit is used for carrying out region division on the monitoring region and analyzing the divided regions; the geographical environment of each region is analyzed, the flood prevention accuracy is improved, and the monitoring error is reduced; an early warning signal is generated according to the current environment, so that heavy loss caused by flood due to the fact that the early warning signal is not timely is prevented; the regional analysis is verified, so that the accuracy of the regional data of the database is improved, and early warning errors caused by data exception are prevented; danger signals of different levels are generated according to river analysis, and the influence of flood is judged through real-time data, so that early warning measures of the same level are reasonably matched, the early warning efficiency is effectively improved, and the output cost of early warning is reduced.

The invention discloses an underground water resource online monitoring system and a detection method thereof. A main control system, a data receiving device and online monitors are arranged in an underground water resource monitoring zone, wherein a plurality of online monitors, at least three online monitors, are arranged in the underground water resource monitoring zone; the data receiving device receives data information sent by the online monitors, and transmits the data information to the main control system; the main control system processes the received data information, and sends instructions to the online monitors for real-time monitoring; each online monitor is composed of a rainwater receiver, a metering skip bucket, a control recorder, a conveying device support frame, a conveying device, a measurer, a protective cover, a rainwater metering device, a data sending device and an underground water observation well; and an online monitor is arranged on each underground water observation well. The underground water resource online monitoring system is scientific in design, reasonable and compact in structure, simple and convenient in operation, detachable, simple and convenient in disassembly and assembly and convenient to carry, can be used for monitoring the water level and the water quality of underground water after raining, is efficient and real-time, and can reduce monitoring errors.

The invention relates to an urban road network traffic operation condition monitoring method and system. The monitoring method comprises the steps: acquiring road section attributes, a road section set and an average flow of taxi historical flows in different time periods; establishing a road network structure according to the road section attributes and the road section set; simulating a road network passage track of the road network structure by using a random walk algorithm to generate a vehicle passage track set; constructing an embedded network model according to spatial structure information, the road section attribute and the average flow of the taxi historical flows in different time periods; encoding the road section according to the embedded network model, determining a final effective code of the road section, clustering the encoded road section, and determining a clustering result; sorting the importance degrees of the roads according to a clustering result, and selecting amonitored road section; and monitoring the traffic operation condition of the urban road network according to the monitored road section. By adopting the monitoring method or system provided by the invention, the road network traffic condition of the whole city can be monitored in real time.

The invention discloses an RFID passive sensing-based infusion liquid level monitoring system and a working method thereof. The system comprises liquid level sensing labels attached with RFID tags, aliquid level sensing integrated machine, a server platform, and a liquid level sensing client; each liquid level sensing label is a tag array composed of a plurality of passive RFID tags arranged on the outer wall of an infusion container; the liquid level sensing integrated machine transmits continuous wave signals through a reader antenna so as to continuously communicate with the liquid level sensing labels through the continuous wave signals to obtain label ID information and signal characteristics returned by the liquid level sensing labels, identifies a corresponding infusion container through an embedded processor, adjusts the power of the reader through adopting a two-stage power stepping algorithm, judges whether a highest liquid level position reaches a designated position on thebasis of the acquired label signal characteristics and continuously uploads monitored liquid level statuses to the server platform; and the liquid level sensing client continuously obtains the liquidlevel statuses of the plurality of infusion containers by accessing the server, and performs early warning once the liquid level of a certain infusion container reaches the designated position.

The invention relates to a building monitoring device and particularly relates to a flying dust monitoring device used for a building, aiming at providing a flying dust monitoring device used for a building, which is simple in structure, convenient in use, intuitive in monitoring and capable of reducing monitoring error. The flying dust monitoring device used for a building comprises a base and the like, wherein a support is connected to the middle of the top of the base, a height adjusting device is arranged on the right side of the support, a transverse board is connected to the height adjusting device, two support rods are vertically connected to the middle of the top of the transverse board, the two support rods are arranged in bilateral symmetry, and a collecting basket is connected between the top ends of the two support rods. According to the invention, a gauze on a placing board rotates to stain dust and then the dust falls into the collecting basket, and the concentration of the flying dust can be mastered by observing the amount of the dust in the collecting basket, so as to achieve the aim of monitoring, thus achieving the effects of being simple in structure, convenientin use, intuitive in monitoring and capable of reducing monitoring error.

The invention provides a monitoring system and method for seed discharge flow of a seeder. The system comprises a falling seed dispersing device, an optical fiber monitoring module and an industrial personal computer; the falling seed dispersing device is arranged at the seed discharging opening of the seeder; a feed inlet and a shunting groove are arranged in the falling seed dispersing device; the minimum end of the feed inlet is connected with the shunting groove; the optical fiber monitoring module comprises an optical fiber emitter and an optical fiber receiver; the optical fiber emitterand the optical fiber receiver are respectively arranged at two sides of the normal direction of the shunting groove; the output of the optical fiber monitoring module is transmitted to the industrialpersonal computer; the industrial personal computer is arranged in a cab of the seeder; the back surface of the industrial personal computer is provided with a coordinator for receiving the data output by the optical fiber monitoring module; and the industrial personal computer comprises a light quantity change value calculation module, a light quantity change value accumulation module, a shielding number counting module and a seed discharge flow forecasting module. The monitoring system and method provided by the invention can solve the problem of accurate monitoring of discharge flow.

The invention discloses a liquid injection monitoring and liquid injection control method, device and system. The liquid injection monitoring method comprises the steps that a host obtains the liquid injection weighing data of liquid in a liquid injection container in real time, and the liquid injection amount injected into a human body is determined; the host acquires the first collected liquid weighing data of the liquid collected in a first recycling container connected with a treatment instrument and the second collected liquid weighing data of the liquid collected in a second recycling container connected with a collecting film in real time, and the amount of liquid discharged out of the human body is determined according to the first collected liquid weighing data and the second collected liquid weighing data; according to the liquid injection amount and the liquid outlet amount, based on a preset loss compensation principle, the liquid absorption amount absorbed by the human body is determined. According to the present invention, the absorption amount of liquid absorbed by the human body can be monitored and accurately determined in real time, and the treatment risk caused by liquid entering human body blood circulation is effectively avoided.

The invention discloses a deep displacement monitoring device and method for side slope and foundation pit engineering. The deep displacement monitoring device comprises an inclinometer tube and a probe, wherein the probe is provided with guide wheels, a guide groove is formed in an inner wall of the inclinometer tube, the guide wheels are matched with the guide groove, the guide wheels upwards and downwards move in the inclinometer tube along the guide groove, the deep displacement monitoring device also comprise an angle measurement meter, the angle measurement meter is used for measuring anangle generated by twisting the inclinometer tube along a horizontal direction of an axis of the inclinometer tube during the monitoring process, the angle measurement meter is a compass device, andthe compass device and the probe twist at the same angle around the axis of the inclinometer tube. By acquiring a horizontal twist angle of the inclinometer tube, horizontal displacement of a slope body under horizontal twisting of the inclinometer tube is corrected to obtain a horizontal displacement correction value. By the deep displacement monitoring device, the influence on deep side slope and foundation pit inclinometry monitoring data accuracy caused by disconnection and twisting generated by the inclinometer tube under relatively large gravity of a surrounding soil layer is eliminated,a monitoring error is reduced, the monitoring data is timely corrected, and more accurate and timely data is provided for horizontal displacement monitoring of a side slope and a foundation pit.

The invention relates to a pose monitoring control system for coal mining machinery of a fully mechanized coal mining face, and discloses a cable type sensor for pose monitoring of coal mining machinery. The cable type sensor comprises a carrier in the form of a cable and a plurality of optical fibers fixed on the carrier, the optical fibers are arranged parallel to the axial direction of the carrier, and at least two optical fibers are located on the same vertical plane and/or at least two optical fibers are located on the same horizontal plane. During use, all parts within the full-length range of the sensor are fixedly mounted relative to a rail on which the coal mining machine runs; when the rail deforms at a certain position, the optical fibers in the inner arc are extruded, the optical fibers in the outer arc are stretched, so that the scattering spectral line of the laser is changed, the bending angle is calculated through change of the scattering spectral line, and the offset is finally calculated. Online real-time monitoring on the three-dimensional pose and moving track of the coal mining machine, the straightness of the working surface and the like is realized, the structure is simplified, the processing cost is reduced, and the processing efficiency is improved.

The invention discloses an intelligent sensor. The intelligent sensor comprises a shell, wherein the shell is provided with a heat dissipation groove and a light receiving groove, and the light receiving groove and a transparent plate are fixedly mounted; a seventh partition plate is provided with an air inlet, the air inlet is in sealing arrangement with an air suction end of an air suction device, the air outlet end of the air suction device is communicated to a temperature measuring cylinder through an air pipe, and a temperature probe is installed in the temperature measuring cylinder; thetemperature measuring cylinder is communicated with a flow meter through the air pipe, a gas flow meter is communicated with a dust meter probe, the dust meter probe is communicated with a humidity sensor, and the humidity sensor is communicated with a filter; the filter is communicated to a first air separation chamber, the first air separation chamber is communicated with one end of a second air bypass, third air bypass, and gas distribution manifold; the other end of the second air bypass and third air bypass are respectively communicated to an oxygen sensor and a combustible gas sensor; the bottoms of a first air bypass and a second ventilation hole are communicated, the second air bypass is communicated with a second air separation chamber, and the second air separation chamber is communicated with a first ventilation hole; a battery is fixed on a fourth partition plate; and a vibration sensor and a circuit board are arranged on a third partition plate.

The invention discloses mining rock mass three-dimensional stress monitoring equipment which comprises an equipment base body, a measuring device, an underground transmission base station and a ground signal transmission base station. The equipment base body is a column body made of a microcrystalline glass material, crossed fiber gratings are arranged on six surfaces of a cube in the equipment base body, and the included angle of the fiber gratings is 45 degrees. According to the mining rock mass three-dimensional stress monitoring equipment and method, the stress state of the underground surrounding rock mass can be accurately and effectively known, an important role and guidance are played in surrounding rock stability analysis and underground engineering safety excavation production, engineering geological dynamic disasters are effectively predicted and early warned, and the mining rock mass three-dimensional stress monitoring equipment and method have the advantages of being high in practicability and the like. And the requirements of green, safe and efficient production of mines are fully met.

The invention discloses a mined-out subsidence area subsidence monitoring device. The mined-out subsidence area subsidence monitoring device is characterized by comprising a controller, a fixed bearing plate and a movable bearing plate; fixed pulleys are arranged on the fixed bearing plate and the movable bearing plate, and a rope is wound on the fixed pulley between the fixed bearing plate and the movable bearing plate; one end of the rope is fixedly connected with the fixed bearing plate or the movable bearing plate, and the other end is fixedly connected with the fixed bearing plate or themovable bearing plate through a tensile displacement sensor; the fixed bearing plate is fixedly connected with an upper-layer base pile casing through a connecting rod; a base protection cylinder is provided with an outer threaded cylinder, the outer threaded cylinder is in threaded fit with the movable bearing plate, a driving motor is installed in the base protection cylinder, and the output endof the driving motor is fixedly connected with the outer threaded cylinder; and the output end of the tensile displacement sensor is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the input end of the driving motor. The device has the advantages of high applicability, high automation degree, high monitoring result accuracy, low investment cost and the like.

The invention discloses a data collecting device, comprising a rack body and an intelligent sensor. The rack body comprises a mounting assembly and a rack assembly. The rack assembly comprises a firstshoe plate, a second shoe plate, and a third shoe plate. Two ends of the second shoe plate are assembled with and fixed to the first shoe plate and the second shoe plate. The third shoe plate is provided with a wind guiding groove, which is communicated with an air inlet of the intelligent sensor. A bolt traverses through a mounting through hole and the second shoe plate in a manner of screw-threading assembling, and thereby a mounting plate is fixedly assembled to the second shoe plate. The first shoe plate is fixedly connected to a first separator plate of the intelligent sensor through a supporting vertical plate. The bottom of the third shoe plate is connected to a fourth shoe plate through a first rotating shaft, and the first rotating shaft is rotatably assembled to the third shoe plate and the fourth shoe plate. The lower part of the fourth shoe plate is fixedly assembled to a fifth shoe plate, and the bottom part of the fifth shoe plate is assembled to a transparent cover in asealing manner. A camera is disposed in the transparent cover.

The invention discloses a weighing and water adding system for an asphalt mixing station. The weighing and water adding system comprises a mechanical module, a PLC terminal module and a server module; the mechanical module comprises a water storage bin, a mixing bin, a sewer pipe and an electromagnetic valve; the sewer pipe is arranged between the water storage bin and the mixing bin, the sewer pipe is provided with the electromagnetic valve, and the electromagnetic valve is controlled by the PLC terminal module; the PLC terminal module controls the terminal module and comprises water adding information inquiry, water adding information statistics, water adding information early warning and water adding state display; by arranging a PLC control system, automatic water adding is conducted, the automation degree is high, time and labor are saved, and the water adding efficiency is improved; and a flow monitoring system is arranged in the sewer pipe, flow data are analyzed and processed, and the accuracy of flow monitoring is improved, so that the water adding amount is accurately controlled, and the asphalt mixing quality is improved.

The invention provides a state monitoring and fault diagnosis system for reciprocating type equipment, and an application method for the state monitoring and fault diagnosis system. The system comprises a measurement and control subsystem, a pedestal, a drive subsystem, a transmission subsystem, a driven part subsystem, a load excitation subsystem, a fault implementation subsystem and a variable working condition implementation subsystem, wherein the drive subsystem, the transmission subsystem, the driven part subsystem, the load excitation subsystem, the fault implementation subsystem and the variable working condition implementation subsystem are disposed on the pedestal. The drive subsystem, the driven part subsystem and the load excitation subsystem are sequentially connected in a mechanical and coaxial manner through the transmission subsystem. The fault implementation subsystem is mechanically connected with the driven part subsystem. The variable working condition implementation subsystem is mechanically connected with the fault implementation subsystem. The measurement and control subsystem is electrically connected with the drive subsystem, the driven part subsystem, the load excitation subsystem, and the variable working condition implementation subsystem. The system can reproduce the operation state which is very similar to the state of large-middle size reciprocating type equipment. The system can generate a smaller monitoring error and higher diagnosis precision in the process of state monitoring and fault diagnosis.