46results about How to "Accurate real-time monitoring" patented technology

The invention relates to a method for monitoring thermal efficiency and coal quality data of a pulverized coal fired boiler in real time. A digital model for monitoring the thermal efficiency of a pulverized coal fired boiler system in real time is established to obtain an excess air coefficient, theoretical air volume of a fuel, theoretical nitrogen volume of a combustion product, flue gas carbon dioxide, carbon monoxide, sulfur dioxide, dry flue gas volume, volume difference between theoretical oxygen demand of full coal combustion and practical combustion oxygen consumption, mass percentage of coal as received basis machinery unburned carbon, mass percentage of coal generated carbon dioxide as received basis carbon, mass percentage of coal generated carbon monoxide as received basis carbon, mass percentage of coal as received basis; densities of carbon, hydrogen, oxygen, nitrogen, sulfur, ash, water and flue gas, flow speed of flue gas in air preheater, lower heating value of coal,heat loss due to exhaust smoke, heat loss due to chemical incomplete combustion, heat loss due to mechanical incomplete combustion, radiating heat loss, ash residue physic heat loss, boiler thermal efficiency, mass percentage of carbon in fly ash and coal combustion. The method has the characteristics that: the method is scientific and reasonable, monitors data correctly, and the like.

The invention relates to a hull longitudinal strength stress monitoring method comprising the following steps: selecting a straight line with the length as L in the hull longitudinal direction as a stress monitoring target; attaching a foil gauge I in the middle point of the selected straight line with the length of L, respectively attaching a foil gauge II and a foil gauge III on the straight line and placing the two on two sides of the foil gauge I, wherein the distance between the foil gauge II and III and the foil gauge I equals to 38.7% of the L; obtaining the real time stresses [sigma]1,[sigma]2 and [sigma]3 of the foil gauges I, II and III, and using a formula [sigma]=(0.5555556*[sigma]2+0.8888889*[sigma]1+0.5555556*[sigma]3)/2 to obtain the monitoring average stress [sigma]. The method employs a method of attaching the foil gauges to replace a long baseline strain gauge, thus monitoring ship stresses and strains with more accuracy and efficiency in real time; the patches are small in size and flexible in mounting; the method is simple in a monitoring process, high in accuracy, and safe in data measurement.

The invention provides a laser power monitoring device comprising a total reflection mirror for splitting beams for laser emitted from a laser source. The incidence plane of the total reflection mirror is coated with a proper reflecting film, most parts of incident beams are reflected to be used for normal operation, but a small quantity of incident beams are transmitted and guided to a power detection element for detecting the power. The laser power monitoring device preferably comprises a neutral adsorption-type attenuation sheet and a focusing lens, so that the monitoring result is more accurate, simultaneously a detection system is simplified, and the cost is lowered.

Embodiments of the invention disclose a flow monitoring method and device. The flow monitoring method in the scheme comprises the following steps: continuously monitoring the data flow of a data packet transmitted by a pre-bound network card object in an operation process of a terminal in a manner of filtering network data by NDIS, and recording the data flow in a corresponding key value of a preset registry; moreover, when detecting that a flow processing condition is satisfied, reading the recorded data flow of the data packet transmitted by the network card object from the preset registry; and executing a preset data flow prompting operation based on the read data flow of the data packet transmitted by the network card object. By implementing the flow monitoring method and device disclosed by the embodiments of the invention, the flow use condition of a wireless network card can be accurately monitored in real time to improve the user experience.

The invention relates to a wireless joints displacement measuring system for a metro shield tunnel. The system comprises a displacement sensor module, a temperature compensation module, a microprocessor module, a wireless transceiver module and a host computer. Through the displacement sensor module, width variation of tunnel joints can be detected at real time; and through filtering, anti-interference processing and temperature compensation, metro vibration noise and temperature influence are eliminated so as to achieve high-precision measurement requirements. In addition, by the use of a wireless network for data transmission, wiring requirements are simplified. Thus, the system is more suitable for the complex environment of an underground tunnel, and accurate, effective and real-time monitoring of tunnel structure changes is realized.

The invention discloses a high voltage dedusting power supply. The high voltage dedusting power supply comprises a rectification filter circuit, a power converting circuit, a control module, a switchtube driving module, an auxiliary power supply circuit, and a spark flashover detection circuit; the rectification filter circuit is invented mainly based on improvement of module rectification principles, an improved module is capable of realizing rectification and EMI filtering effectively, and providing stable voltage for the power converting circuit and the auxiliary power supply; the switch tube driving module is used for increasing driving capacity of PWM wave in the control module by using an isolation transformer, so that PWM wave generated by the control module SG3525 can be used fordirect controlling of the working states of a switch tube; the control module is used for realizing automatic control on a high voltage power supply through signals detected by the spark flashover detection circuit, and reducing power supply output voltage when electrostatic precipitator sparking is detected. The high voltage dedusting power supply is convenient to use, is capable of realizing automatic control, is green, and is friendly to the environment.

The embodiment of the invention provides a driver active alarm system and device based on face recognition. The method comprises the steps of obtaining the driving speed of a vehicle; judging whetherthe driving speed exceeds a first preset threshold value or not; when the driving speed exceeds a first preset threshold value, obtaining the first face information of a driver; determining a first blinking frequency and a head rotation frequency of the driver according to the first face information; judging whether the first blinking frequency and the head rotating frequency reach a second presetthreshold value or not; and when the blinking frequency and the head rotating frequency do not reach a second preset threshold value, sending the first alarm information to the driver, so that the technical problems that in the prior art, a driver driving an automobile cannot be monitored in real time, safe driving of the automobile is not facilitated, and the safety coefficient is low are solved, and the technical effects that the facial feature change of the driver is rapidly and accurately monitored in real time, timely feedback and early warning are achieved, misoperation of the driver isavoided, and the driving safety is improved are achieved.

The invention discloses a device and method for detecting the falling off of the surface excitation electrode sheets of a three-dimensional mapping system. With the device and method adopted, the accurate monitoring of the surface excitation electrode sheets can be realized stably and accurately, and an alarm can be issued in time when the surface excitation electrode sheets fall off. The device comprises a falling-off signal detecting circuit, a falling-off signal processing module, and a human-computer interaction interface; the falling-off signal detecting circuit is connected with the excitation source of the three-dimensional navigation system and is used for collecting falling-off signals from excitation current; and the falling-off signal processing module is connected with the falling-off signal detecting circuit so as to receive the falling-off signals, is connected with the excitation switching controller of the three-dimensional navigation system so as to receive synchronization signals, and is used for generating a falling-off alarm according to the falling-off signals and the synchronization signals; and the human-machine interaction interface performs falling-off alarm prompting.

The invention discloses a facial expression recognition method and a device in order to solve the problem that the facial expression cannot be quickly and accurately monitored in real time in the prior art. The method includes the following steps: locating key facial expression points on a face, wherein the key facial expression points cover the eyebrows, the eyes, the nose, the mouth and the cheeks; extracting facial expression features on the face subspace centering on each key facial expression point; and recognizing a facial expression according to the facial expression features extracted.

The invention relates to a corrugator and discloses a corrugator with an automatic pressure mechanism. The corrugator comprises a corrugator body (9), wherein the corrugator body comprises a thickness detection mechanism, a pressing mechanism and a controller (1) connected with the thickness detection mechanism and the pressing mechanism; the thickness detection mechanism comprises a telescopic rod (3) and a rod piece (6) parallel to a rotating shaft (5); a pinion (61) is installed on the rod piece (6); a convex column (62) is arranged on the rod piece (6); a telescopic sleeve (7) is installed on the corrugator body (9); a spiral groove (71) is formed in the telescopic sleeve (7); the controller (1) controls the pressing mechanism to carry out second pressing on the corrugated paper surface by analyzing the displacement of the telescopic sleeve (7). The corrugator has the technical effects that the thickness is detected by the thickness detection mechanism and then the thicker part is pressed in a targeted manner by the pressing mechanism; the thickness detection mechanism amplifies the tiny thickness change by setting the gear ratio, thus achieving accurate real-time monitoring.

The invention discloses a real-time monitoring method for the rotor temperature of a high-speed permanent magnet motor, and the method comprises the following steps: (1), measuring and recording the environment temperature at the moment when the high-speed permanent magnet motor is cooled to the room temperature, and recording the environment temperature as t1; obtaining the residual magnetic flux density Br (t1) of the permanent magnet when the environment temperature is t1; (2) obtaining phase current values of three phases of the high-speed permanent magnet motor stator and converting the phase current values into direct-axis current Id and quadrature-axis current Iq under a two-phase coordinate system; acquiring a load air gap potential E delta of the high-speed permanent magnet motor; the no-load back electromotive force E0 of the high-speed permanent magnet motor is calculated; (3) acquiring no-load main magnetic flux phi delta 0 according to the no-load back electromotive force E0 of the high-speed permanent magnet motor; (4) calculating the residual magnetic flux density Br (t2) of the permanent magnet when the real-time temperature is t2 by using the no-load main magnetic flux phi delta0; and (5) finally obtaining the real-time temperature t2 of the rotor according to the residual magnetic flux density Br (t2) of the permanent magnet when the real-time temperature is t2. The temperature of the high-speed permanent magnet motor rotor can be monitored in real time in the operation process.

The invention discloses an urban building carbon emission real-time monitoring system, belongs to the field of urban environmental protection, and is used for solving the problems that the human factors and environmental factors are not comprehensively considered in the urban building carbon emission monitoring, and a corresponding supervision alarm level is not set according to the urban building carbon emission. The urban building carbon emission real-time monitoring system comprises an alarm grading module, a man-made monitoring module, a supervising and grading module and an environment monitoring module; the man-made monitoring module is used for monitoring the man-made factors of the urban building carbon emission, and the environment monitoring module is used for monitoring the environment factors of urban building carbon emission, the supervising and grading module is used for supervising and grading the urban building carbon emission, and the alarm grading module is used for carrying out alarm grading on the urban building carbon emission. According to the invention, during the real-time monitoring of the urban building carbon emission, the human factors and the environmental factors of the urban buildings are comprehensively considered, and the corresponding supervision level and the alarm level are set according to the urban building carbon emission.

The invention discloses a detection system. The detection system comprises a first detection device which is fixed on a first body part of a user using the detection system and a second detection device which is fixed on a second body part of the user; a first signal transmission branch circuit is formed between the first body part and the second body part through the body of the user, a second signal transmission branch circuit is formed between the first detection device and the second detection device through wireless transmission, a signal transmission loop for transmitting signals is composed of the first signal transmission branch circuit and the second signal transmission branch circuit, and the signal transmission loop is used for detecting body condition information of the user.

The invention discloses an underground space waterproof curtain leakage monitoring device. The waterproof curtain leakage monitoring device comprises an inner side sensing system composed of a plurality of inner side sensing modules, an outer side optical fiber system and a data terminal; each inner side sensing module comprises a composite wet pressure sensor, a single-chip microcomputer and a wireless communication module; the composite wet pressure sensors, the wireless communication modules and the single-chip microcomputers are connected; the outer side optical fiber system comprises micro-motion sensing optical fibers and an optical time domain reflectometer, and the micro-motion sensing optical fibers are arranged along different monitoring areas and connected with the optical timedomain reflectometer; and the optical time domain reflectometer and the inner side sensing systems are connected with a data terminal. According to the invention, tiny leakage points of a waterproof curtain can be effectively and accurately monitored, the leakage degree can be effectively and accurately evaluated, and dangerous events are avoided.

The invention discloses a temperature measurement insertion tube including a tube body; an air bag is arranged at the front end part of the tube body; the air bag is connected with one end of an inflating pipe; the other end of the inflating pipe is connected with a one-way valve; a temperature sensor is arranged on the air bag; the temperature sensor is connected with related equipment such as asignal processing display and the like through a lead and a plug on the lead, so that feedback of human body temperature is realized; by means of the structural design, the situation that when a traditional trachea insertion tube is inserted into the trachea to measure the temperature of the trachea wall, the temperature measurement mode of the insertion tube wall is inaccurate due to the fact that the inhaling temperature and the exhaling temperature of air in the trachea are different and neutralized is avoided, and misdiagnosis of medical staff is avoided to a certain extent.

The invention discloses a power supply safety monitoring system, which comprises a PLC, a voltage sampling board, a current sampling board, a high-frequency rectification module and a touch screen. The present invention fully utilizes various intelligent functions of the s7-200plc by using the Siemens s7-200, and realizes intelligent management and abundant man-machine interfaces. The monitor can directly send the control quantity to the rectifier module, which reduces the intermediate adjustment and conversion links, and can complete the real-time monitoring of the rectifier module more quickly, accurately and reliably. The monitor has strong functions, high reliability, less maintenance, and is easy to operate. At the same time, it can be easily connected to the integrated automation system through communication. It can provide safe, stable and reliable DC power for the integrated electric power automation system, and has a significant social and economic benefit.

The invention provides a power transformer fault diagnosis device and method based on vibration signals, and relates to the technical field of high-voltage power equipment. The device comprises a vibration signal acquisition module with multiple measuring points, a vibration signal optimization module internally connected with a power supply, a vibration signal online post-processing module, a normal and abnormal display end and a fault alarm. The vibration signal acquisition module uses a piezoelectric vibration sensor to measure a vibration signal of a transformer box body and transmits the vibration signal to the vibration signal optimization module, and the vibration signal optimization module optimizes the vibration signal and then transmits the vibration signal to the vibration signal online post-processing module. The vibration signal online post-processing module stores the processed vibration signal data, performs data visualization processing and data comparison analysis, and then transmits the processed vibration signal data to the frequent and abnormal display terminal and the fault alarm, the frequent and abnormal display terminal displays a vibration ripple diagram of the vibration signal, and the fault alarm performs voice broadcast on a fault state.

The invention discloses an FRP (fiber reinforced plastic) lossless multi-electrode sensing structure for intelligent tensioning and a CFRP (carbon fiber reinforced plastic) rib manufacturing method. The structure is characterized in that electrodes including two terminal electrodes and two inner electrodes and a detection circuit are arranged in a CFRP rib, a constant-current power supply is connected between the two terminal electrodes, and an ampere meter is serially connected in a current output circuit of the constant-current power supply. A voltmeter is arranged in a voltage detection circuit which is arranged between the two inner electrodes. When a body resistance change value resulted from axial deformation of the CFRP rib is obtained by calculation according to detection signals of the detection circuit when the CFRP rib is under an axial force, a stress state of the CFRP rib is judged, and real-time monitoring aiming at the stress state of the CFRP rib is realized.

The invention discloses a power distribution equipment data acquisition system which is used for acquiring sensors of power distribution equipment, and comprises a plurality of acquisition node modules, a plurality of data transmission router node modules, a data receiver node module and an upper computer. The acquisition node modules are used for acquiring data of the sensors, and processing thecollected data; the data transmission router node modules receive data processed by the acquisition node modules in a routing network connected with the data transmission router node modules and forwards the data to the data receiver node module; the data receiver node module collects data transmitted by all the data transmission router node modules and the acquisition node modules and uploads thedata to the upper computer; and the upper computer processes, displays and stores the uploaded data. According to the invention, rapid and accurate real-time monitoring of the current environment temperature is realized, and the temperature data is transmitted to the equipment monitoring center in a wireless transmission mode and is displayed on the upper computer.