1798results about How to "Real-time measurement" patented technology

An actively controlled rotary steerable drilling system for directional drilling of wells having a tool collar rotated by a drill string during well drilling. A bit shaft has an upper portion within the tool collar and a lower end extending from the collar and supporting a drill bit. The bit shaft is omni-directionally pivotally supported intermediate its upper and lower ends by a universal joint within the collar and is rotatably driven by the collar. To achieve controlled steering of the rotating drill bit, orientation of the bit shaft relative to the tool collar is sensed and the bit shaft is maintained geostationary and selectively axially inclined relative to the tool collar during drill string rotation by rotating it about the universal joint by an offsetting mandrel that is rotated counter to collar rotation and at the same frequency of rotation. An electric motor provides rotation to the offsetting mandrel with respect to the tool collar and is servo-controlled by signal input from position sensing elements such as magnetometers, gyroscopic sensors, and accelerometers which provide real time position signals to the motor control. In addition, when necessary, a brake is used to maintain the offsetting mandrel and the bit shaft axis geostationary. Alternatively, a turbine is connected to the offsetting mandrel to provide rotation to the offsetting mandrel with respect to the tool collar and a brake is used to servo-control the turbine by signal input from position sensors.

The invention discloses a method of 3D contour measurement of a workpiece on a conveyor belt based on line laser scanning. The method comprises the following steps of obtaining camera internal and external parameters through camera calibration, carrying out filtering and laser light strip center position initial extraction through an image preprocessing step, carrying out sub-pixel precision refinement on the center coordinates of a light bar, obtaining a light plane equation through the laser light plane calibration and finally carrying out reconstruction and measurement of the three-dimensional contour information of a workpiece to be measured. The workpiece 3D contour measurement brought forward by the invention has the following advantages: a high measurement precision which means thethree-dimensional contour information of the workpiece to be measured can be accurately obtained through the laser light bar extraction with sub-pixel precision and 3D reconstruction; a fast measurement speed which means real-time measurement of 3D contour information of the workpiece to be tested can be realized to improve the efficiency of industrial production site operations; and low hardwarecosts which is realized in a hardware implementation mode in which laser is combined with a monocular camera. Accordingly, the technical method of the application has advantages such as being in a non-contact mode, high in measurement precision, fast in speed and low in cost, and can be applied to an industrial automation production process to realize accurate measurement of the 3D contour information of the workpiece on the conveyor belt.

A distributed fiber sensor based on spontaneous Brillouin scattering uses a single-frequency fiber laser as a source and a cw Brillouin fiber ring laser as an OLO to optically shift the frequency of the OLO to set the Brillouin / OLO beat frequency within the bandwidth of a conventional heterodyne receiver. The distributed fiber sensor is capable of real-time measurement of both temperature and strain.

A system and method for enhancing and displaying a target object, that generally comprises: a processor that demodulates the rate of movement of the target object to produce a demodulated signal; computes the power of the demodulated signal; creates an image sequence, based on the power of the demodulated signal, that comprises the enhanced periodic motion pixels; and forms an image sequence of the enhanced periodic motion pixels to form an image display of at least the target object; and an image display device to display the target object.

The invention provides a wearable remote medical health management system. The wearable remote medical health management system has the advantages of small size and convenience in wearing, physiological parameters of a human body can be measured in real time without wounds, and meanwhile, the measured parameters can be sent to families, doctors, an emergency monitoring station and a data processing center; according to a large quantity of measured physiological parameters, a medical report and a nutrition report can be regularly given by the system, so as to facilitate the disease prevention of a patient; for abnormal indexes or states in a measuring process, the system can automatically give an alarm and send an alarm message to the monitoring station, and the monitoring station can analyze the alarm message and take further measures. In addition, the system has an innovative quick alarm function, and when a quick alarm key is long-pressed, the system can directly give an alarm call and automatically change the position of the patient, which is obtained by a GPS (Global Position System) module, into voice to be supplied to the other party. More importantly, a plurality of patients can be simultaneously monitored by the systems, so that centralized management is realized, and the management efficiency is improved.

The invention provides an exercise monitoring and management system applied to diabetes rehabilitation, which is capable of obtaining physiological parameters and environmental parameters of a diabetic in an exercise process in real time and carrying out real-time processing and feedback on the data. The exercise monitoring and management system comprises front-end monitoring equipment used for obtaining the physiological parameters and the environmental parameters of the diabetic in the exercise process in real time, and then uploading the data to a mobile phone client through a Bluetooth module with low power consumption, wherein the mobile phone client is capable of locally storing and initially processing the data, displaying a result on an interactive interface and transmitting the monitoring information to a remote health management system in real time through a mobile communication network; the health management system is capable of comprehensively analyzing based on an exercise management theory of the diabetes and feeding an analysis result back to a doctor and a patient, so that danger caused by the excessive exercise during exercise is avoided, and the exercise rehabilitation condition of the patient can be conveniently monitored and counted for a long time.

The invention discloses a tool setting device and a tool setting method for a micro lathe and belongs the technical field of mechanical automation. The device comprises a machine tool clamp plate, a tool rest, a tool, a guide rail, a first charge coupled device (CCD), a reflector, a first light source, a second CCD, a second light source and an outer computer. The method comprises the following steps of: calibrating pixels in the horizontal direction and pixels in the vertical direction respectively, and transmitting images containing actual distance information to the outer computer; monitoring and adjusting the tool to ensure that the tool approaches an end surface of a workpiece; displaying the distance between a tool nose and the rotary center of the end surface of the workpiece by a technology and software; manually adjusting the distance between the workpiece and the tool according to the obtained distances in the three directions, or controlling the relative motion of the tool and the workpiece by outputting corresponding signals through the computer so as to realize high-precision tool setting of the micro lathe. According to the device and the method, an image measurement technology is adopted, so that tool setting gaps can be automatically detected and can be measured in real time; and therefore, the tool setting difficulty is reduced, and the machining process can be well monitored.

A multifunctional optical micro-manipulation device comprises a femtosecond laser, an optical tweezers laser, an optical system, a stage, a light source system, an imaging system, a spectral measurement system and a computer, wherein the optical system comprises a shutter, an attenuator, a focusing lens, a near IR reflector and a microscopic objective lens; the light source system comprises an illumination light source and a condenser lens; the microscopic objective lens is arranged on the stage for condensing a laser beam emitted by a laser generator onto a sample; the condenser lens is arranged below the stage for condensing a visible light emitted by the illumination light source onto the sample; and the imaging system includes an IR filter and CCD camera sequentially disposed on the projection light path of the near IR reflector. By integrating three functions of laser tweezers, femtosecond laser scissors and microspectrometer in one system, the invention can overcome the singleness and the disadvantages of the prior laser micro-beam technology and can be widely used for studying in biological, medical, biophysical, material chemistry and nano-technology fields.

In assessing the capability of an IP based network to support toll telephony service, objective measurements of Speech Quality are taken. A module is used with Voice over Packet equipment that allows performance of voice quality measurements in real-time without using any external test equipment. A reference signal that includes a marker and a voice test signal is sent through the network from one Voice over Packet equipment containing or connected to the module to another. The received marker is compared to the reference marker to identify the onset time of the received voice test signal. The received and reference voice test signals are processed to measure the quality of the network. This may be implemented using the processing power and memory resources present in Voice over Packet equipment giving the network administrator an enhanced test capability at each node of the network. Voice quality measurements may be generated in a transparent way for the callers in real-time under severely degraded conditions of the network.

The invention discloses a test device for surface deformation of a material and a test method thereof, wherein the device comprises a material mechanical property test machine, an infrared fast heating device, a surface deformation optical test system, a temperature collecting device, a vacuum system and a clamp. The clamp fixes a sample in a vacuum chamber of the vacuum system and is connected with the material mechanical property test machine, the infrared fast heating device supplies thermal load for the sample, and the surface deformation optical test system measures the surface deformation of the sample. The device and the test method can simultaneously heat, apply stress and synchronously test deformation field in the surface. The coupling simulation of an aero-engine under service environment with high temperature and loading level, and the surface deformation condition of the structural material with high temperature under the environment are tested.

The invention discloses a high-speed electric main shaft dynamic rigidity test device which comprises a base, a loading system and an automatic control unit, wherein the loading system comprises an axial loading system, a radial loading system and a test rod fixedly arranged on a high-speed electric main shaft; the excircle of the test rod is provided with a radial rolling bearing, and the loading end part of the test rod is provided with a plane rolling bearing; and the radial loading system and the axial loading system respectively load the test rod by the radial rolling bearing and the plane rolling bearing. The invention combines the high-speed rotation and static loading of the main shaft by the rolling bearing structure and acquires a loading value and a deforming value by a pressure sensor and a displacement sensor, and the control unit controls loading pressure according to the change of the loading value and the deforming value, thereby preventing the influence on test precision caused by friction heat generation and mechanical abrasion generated by mechanical contact when the high-speed electric main shaft is directly loaded in a state of high-speed running, realizing continuous and stable dynamic loading and real-time measurement of the high-speed electric main shaft and having high measurement precision.

The invention provides a parcel volume measuring method and system, a storage medium and a mobile terminal. The method comprises the following steps that S100, a target image is obtained through a camera of the mobile terminal, wherein the target image comprises a plane marker, an upper surface of a to-be-measured parcel with the plane marker, and two side surfaces of the to-be-measured parcel adjacent to the upper surface; S200, image processing is conducted on the target image, so that the plane marker is recognized in the target image; S300, image edge detection is carried out on the targetimage, so that the angle points of the to-be-measured parcel are identified in the target image; S400, the world coordinates of the angular points are calculated based on the plane marker, the pre-obtained internal reference matrix and the angle points of the camera, so that the volume of the to-be-measured parcel is obtained according to the world coordinates of the angular points. According tothe invention, the volume of the parcel to be measured is accurately measured by using the camera built in the mobile terminal in a real-time manner; the use scene is enriched, additional hardware facilities do not need to be added, and the cost is saved.

The invention relates to a system and a method for automatically measuring dimension and weight of a road vehicle, in particular to an integrated system and an integrated method for rapidly and dynamically measuring the length, width, height and weight of a vehicle, and aims at effectively solving the problems in overloading detection work at present. According to the system, the dimension information of the vehicle is measured in a front and back portal frames manner; the width and height information of the vehicle in a single lane is measured by combination of two two-dimensional laser radars on the front portal frame, so that the measurement problem caused by vehicle deformation can be effectively avoided; and the length information of the vehicle in the single lane is indirectly measured by virtue of a single laser radar on the rear portal frame; and starting and stopping information of the single vehicle is provided for a shaft-type weighing scale by virtue of a laser radar separation vehicle on the front portal frame. The system has the advantages of high measurement speed and high accuracy, and normal running of the vehicle is not affected.

There is provided a neutron capture therapy apparatus (1) capable of measuring the neutron dose in real time while suppressing a reduction in the measurement accuracy of a neutron beam (N). A real-time dose output unit (40) including a scintillation detector (41), which detects the neutron beam (N) and outputs a signal in real time, and a neutron dose output unit (44), which converts the signal, output from the scintillation detector (41) into a neutron dose using a correction coefficient (45) and outputs the neutron dose in real time, and a correction coefficient setting unit (60) that sets the correction coefficient 45 are provided. The correction coefficient setting unit (60) includes a gamma ray detection section (62) that detects a gamma ray emitted from a gold wire (61) activated by irradiation of the neutron beam (N), and modifies the correction coefficient (45) based on a signal, which is output from the scintillation detector (41) by irradiation of the neutron beam (N), and a dose of the neutron beam (N), which is acquired based on the gamma ray detected by the gamma ray detection section (62).

The invention relates to a far-field parameter calibration device and a far-field parameter calibration method for an antenna. The calibration device comprises a receiver, a computer, a microwave anechoic chamber, a receiving antenna, a turntable, a transmission antenna, a bracket and a signal generator, and is characterized in that the receiving antenna, the turntable, the transmission antenna and the bracket are arranged in the microwave anechoic chamber; the receiving antenna is arranged on the turntable, and is arranged on the spatial longitudinal axis of the anechoic chamber; the transmission antenna is arranged on the bracket, and is arranged on the spatial longitudinal axis of the anechoic chamber; the receiver is in communication connection with the computer; the signal output end of the computer is connected with the turntable and the signal input end of the signal generator respectively; the signal output end of the signal generator is connected with the signal input end of the transmission antenna; and the signal output end of the receiving antenna is connected with the signal input end of the receiver. According to the device and the method, electrical performance parameters of the antenna can be measured accurately, quickly and efficiently in real time. The device and the method are high in applicability and wide in frequency calibration range, and the measurement synthesis uncertainty can reach 0.21 to 0.49dB.

The invention provides a tool setting device and method of a mini-type numerical control milling machine, belongs to the field of a machine tool automatic control technology and aims to solve the problems in the prior art that the tool setting precision and the tool setting efficiency are low. The tool setting device comprises CCD (Charged Coupled Device) cameras, light sources and a laser tool setting instrument, wherein the two CCD cameras are orthogonally placed; the two light sources are respectively sleeved at the front ends of the two CCD cameras to illuminate a workpiece; after light is reflected, the light is received by the CCD cameras and is transmitted to an outer computer, so as to determine the positions of the workpiece and a tool in a machine tool coordinate system; the laser tool setting instrument and the workpiece are placed in parallel; a tool nose contacts laser emitted by the laser tool setting instrument and a signal generated by the laser tool setting instrument is transmitted to the outer computer, so as to further determine the position of the tool in the machine tool coordinate system; and data processing is carried out through computer program software so as to realize rapid tool setting. According to the tool setting device and method of the mini-type numerical control milling machine, the tool nose and the workpiece to be machined do not need to be actually contacted to carry out trial cutting, so that an error caused by contacting the tool nose with the workpiece to be machined is avoided, and the tool setting precision and the tool setting efficiency of the workpiece are improved.

The invention provides an electric energy meter capable of measuring residual currents. The electric energy meter comprises a shell, a wiring terminal base, a phase line, a null line, a relay, a phase line current sampling resistor, a residual current transformer and a circuit device. The relay, the phase line current sampling resistor and the residual current mutual inductor are all arranged in the shell. The phase line and the null line penetrate through the residual current mutual inductor. The circuit device comprises a voltage sampling module, a signal processing module, an A / D conversion module, an electric energy metering module, a single-chip microcomputer processing module, a relay control module, a communication module, an LCD display module, a button module and a power module. The electric energy meter can measure and record the residual currents in user lines in real time and has the functions of residual current over-limit warning and event recording. The electric energy meter only needs to be improved on the basis of an existing intelligent electric energy meter, is not high in improvement cost, does not affect the functions and the overall dimension of the existing electric energy meter and is convenient to popularize in large scale.

The invention relates to non-linear optical frequency conversion and the application of the non-linear optical frequency conversion and provides a method and a device which can widen the preparation requirements for a biological sample, do not need preparation of the sample, are high in measurement sensitivity, and can achieve high resolution, fast and real-time biological sample moisture content and distribution imaging measurement. The technical scheme is that the biological tissue moisture measurement device based on terahertz wave attenuated total reflectance (ATR) is composed of a tunable terahertz (THz) radiation source, a non-spherical face lens assembly, a total reflection prism, a two-dimensional mobile scanning platform, a terahertz wave detector and a computer. The total reflection prism is placed in the middle of the non-spherical face lens assembly, the face to be tested of a biological sample to be tested clings to the top face of the total reflection prism fixed on the two-dimensional mobile scanning platform, terahertz (THz) waves are projected to the terahertz detector through the non-spherical face lens assembly, and a detection result of the terahertz detector is output to the computer. The biological tissue moisture measurement device and the method based on the terahertz wave attenuated total reflectance (ATR) are mainly used for biological sample moisture content and distribution imaging measurement.

The invention discloses a plate clamper platform for a falling weight impact test, and an impact speed measurement method. The plate clamper platform comprises a clamper structure, a supporting lifting structure and a laser sensor, wherein the clamper structure comprises a plate clamping device, a multi-angle rotation device and a clamper bottom plate, the multi-angle rotation device comprises wall plates, wall plate bolts and a bottom plate bolt, each wall plate is provided with a central hole and two arc-shaped grooves, the two arc-shaped grooves are symmetrically arranged relative to the central hole, clamping plates can rotate along the arc-shaped grooves after the wall plate bolts are completely loosened, the supporting lifting structure comprises a platform and a lifting driving device, the clamper bottom plate can rotate by adopting the bottom plate bolt as the center and can slidably move along a straight strip hole, and the laser sensor is arranged below the weight tray positioned on the periphery of a hammer head. With the plate clamper platform and the impact speed measurement method of the present invention, the composite material plate specimen can be tightly clamped, the multi-angle impact on the specimen can be achieved, and the speed change during the drop hammer falling and impact process can be real-timely measured.

The invention discloses a stereoscopic vision on-line detection method for a surface crack of a stretched aluminum alloy plate. According to the vision detection method, two CCD (Charge Coupled Device) cameras are fixedly connected with equipment so as to keep the constant parameters of the relative position of the CCD cameras; a matched calibrating program is used for automatically finishing a calibrating operation for the parameters of the two cameras; and a special precise mechanical system is used for controlling and outputting focal length parameters of the cameras, so as to realize the precise measurement for space coordinate information of a small object. Accordingly, a real-time measuring algorithm for an area stress and a crack length on the basis of displacement of a surface texture feature point (detecting point) is provided. The measured stress level and crack length information are combined with a crack growth theory, so that the crack threatening estimation and the action forecasting are realized, the optimal stretching technical parameter is confirmed, the belt breaking accident is avoided during a stretching process, the safety of equipment and production personnel is ensured, the yield of products is increased and the application prospect in the panel processing field is wide.

The invention discloses a spherical hinge capable of realizing the rotation angle measurement and a measurement method of the rotation angle. The spherical hinge is characterized in that a ball seat provided with a ball socket therein is formed by a base and an end closure, a ball head is placed in the ball socket, a spherical crown is exposed at an opening of the end closure, and the top surface of the spherical crown of the ball head is connected to a ball-jointed rod; the ball head and the ball socket are concentric, and the ball head can concentrically rotate relatively to the ball socket; permanent magnets are embedded and uniformly distributed on the surface of a low half ball of the ball head; magnetic effect sensors are embedded and uniformly distributed on the surface of the ball socket; sensing output signals of the magnetic effect sensors are used for judging the relative location between the ball head and the ball socket and the direction of the relative movement. The spherical hinge can be used for realizing the three-dimensional angle measurement under the condition of having no influence on the movement accuracy and the mechanical property of ball joints and no damage on the structures of the ball joints.

Methods and devices for measuring elongation, wear, and internal temperature of a conveyor belt to catch signs of conveyor belt failure such as breakage by detecting a magnetic field from a magnetic body by using a magnesium sensor, as well as a rubber magnet sheet as a magnetic body and a method of producing the sheet, the rubber magnet sheet being able to be used while it is embedded in the conveyor belt. To measure elongation of a running conveyor belt ( 11 ), a magnetic field of a magnetic body ( 2 ) embedded in the belt ( 11 ) is detected by a magnetism sensor ( 3 ) fixed to the earth, and elongation of the belt ( 11 ) is calculated from temporal variation of the detected magnetic field.

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 provides a wind speed and direction real-time measuring method and a device of a high-altitude sky-parking aircraft. The method is composed of a measuring device and a wind speed and direction extraction algorithm, wherein, the measuring device is a rigid rotary rod which is driven by a brushless motor and rotates at a constant angular speed, two ends of the rigid rotary rod are provided with pressure measuring probes which are connected to a differential pressure transducer. When wind blows to the rigid rotary rod which constantly rotates, the pressure difference between the two pressure measuring probes is a periodic cosine signal, and the amplitude of the signal is in direct proportion to the wind speed, and the phase position of the signal contains wind angle information. By adopting the extraction algorithm of the invention, wind speed and direction information can be extracted from the differential pressure signal. The invention is characterized in that the amplitude of the differential pressure signal is in direct proportion to the product of atmospheric density and the linear speed of a rotary arm at the predetermined wind speed. Thus, in the invention, larger signal amount can be obtained under lower atmospheric density by reasonably selecting the rotating speed of the rigid rotary rod and the length of the rotary arm so as to reliably extract the wind speed and direction information.

The invention provides a method for measuring alkali metal atomic polarizability of a nuclear magnetic resonance gyro in real time and belongs to the field of atomic physics. The method includes: measuring alkali metal atomic densities of an atomic pool at different temperatures, measuring atomic nuclear magnetic resonance frequency of inert gas caused by polarization of alkali metal atoms, and thus acquiring polarizability of the alkali metal atoms in the atomic pool without changing the optical path structure of the nuclear magnetic resonance gyro and the magnetic field environment; building a three-dimensional model of changes in nuclear magnetic resonance frequency of the inert gas in the atomic pool along with temperature and the alkali metal atomic polarizability, measuring the frequency shift of atomic NMR (nuclear magnetic resonance) of the inert gas at any temperature point while the nuclear magnetic resonance frequency normally runs, and thus calculating the polarizability of the alkali metal atoms in the atomic pool in real time. The method has the advantages that the method is simple, no influence is caused to the optical path structure of the nuclear magnetic resonance gyro and the method is of great significance to improving the performance of the nuclear magnetic resonance gyro.

The invention provides a ball screw assembly precision retaining testing apparatus. A linear feeding system comprises a pedestal; supports are arranged at the two ends of the pedestal; a servo motor is arranged at one support and is connected with a ball screw; guide rails are fastened and connected to the two sides of the pedestal; and a work bench is connected on the two guide rails in a sliding mode. A lead screw nut sleeves the ball screw and is connected with the work bench by the lead screw nut firmly. A loading force simulation system consists of a linear motor platform mechanism fixed on the pedestal; and a sliding platform of the linear motor platform mechanism is connected with the sliding rails in a sliding mode. A pull pressure sensor is arranged between the sliding platform and the work bench. A pre-tightening adjusting system includes a lead screw nut, a sleeve, a pressure sensor, a support ring, and a fixed ring, wherein the units sleeve the ball screw in sequence; and a piezoelectric ceramic actuator is arranged between the support ring and the fixed ring. According to the invention, the pre-tightening force of the lead screw nut is controlled precisely based on the expansion value of the piezoelectric ceramic actuator, so that automatic compensation for attenuation of the pre-tightening force during the operation process of the ball screw assembly can be guaranteed.

An ammonia nitrogen concentration soft-measuring method based on a fuzzy neural network belongs to both the field of control and the field of water treatment. Aiming at the problems that currently, effluent ammonia nitrogen concentration is difficult to measure in real time in the sewage treatment process and an effluent ammonia nitrogen concentration real-time detection method urgently needs to be researched to promote the automation level of an urban sewage treatment plant, the ammonia nitrogen concentration soft-measuring method is based on biochemical reaction characteristics of urban sewage treatment, adopts the fuzzy neural network based on a fast quadratic learning algorithm to build an ammonia nitrogen concentration soft-measuring model, and solves the problem of difficulty in real-time measurement on the effluent ammonia nitrogen concentration. The result shows that the soft-measuring model can rapidly and accurately predict concentration of the effluent ammonia nitrogen in the sewage treatment, is beneficial for promoting the quality monitoring level of the concentration of the effluent ammonia nitrogen in the sewage treatment process and ensures high-efficiency and stable operation of the urban sewage treatment plant.

The invention discloses a mountain torrent disaster on-line monitoring and identification early warning method. The method includes the following steps that: a data acquisition subsystem acquires data at a site: an automatic rainfall monitoring station acquires and processes disaster field rainfall information and transmits the information to the system platform of an early warning index analysis model through a wireless mode and / or a wired transmission mode, a water level and / or mud level monitoring station acquires and processes field debris flow and water level information and transmits the information to the system platform of the early warning index analysis model through a wireless mode and / or a wired transmission mode, and a video monitoring station acquires and processes disaster field image information and transmits the information to the system platform of the early warning index analysis model through a wireless mode and / or a wired transmission mode; an identification early warning subsystem performs early warning judgment and issues internal early warnings; personnel are determined, and formal early warnings are issued; real-time monitoring is performed; and information query is performed. The method has the advantages of rapid identification and predictive early warning, and can assist in avoiding loss. The invention also discloses an early warning system using the mountain torrent disaster on-line monitoring and identification early warning method.

The invention belongs to the technical field of electric power equipment on-line monitoring, and in particular relates to a transformer substation capacitor on-line monitoring method and device based on a wireless mode, wherein the method mainly comprises the following steps: designing and additionally arranging a self-electricity-supplying current measuring unit at the high-voltage side of each capacitor, additionally arranging a self-electricity-supplying voltage measuring unit at the secondary side output end of an electricity discharge PT (potential transformer) of each group of parallel capacitors, acquiring the working voltage and current of each capacitor, and sending the obtained working voltage and current of each capacitor wirelessly to a monitoring base station; monitoring an internally-built computer and a wireless module of the base station; sending a capacitor voltage and current synchronous sampling starting conversion command, receiving, storing and managing measurement data, calculating the capacitance and medium loss of each capacitor by utilizing spectrum analysis, sending the calculated result to a monitoring host machine of a remote monitoring center for comprehensive estimation and analysis, and giving out a fault alarm for the capacitors with the variation greater than a certain value.