55results about How to "Real-time online" patented technology

The invention discloses an efficient multipath laser probe detecting system and method. The detecting system can divide laser sources into multiple paths and transmit the laser sources to multiple to-be-detected points through optical fibers, corresponding spectral signals are transmitted back to the detecting system after laser plasma is generated through excitation, finally, multi-point and simultaneous on-line detection by one laser probe instrument is finally realized, the optical fibers are used for transmitting laser and the spectral signals, accordingly, the anti-jamming capability of a laser probe in the severe environment can be improved, and the application cost of the laser probe instrument can be substantially reduced. The efficient multipath laser probe detecting system is particularly suitable for a large industrial process containing multiple production lines, has the on-line monitoring capability for multiple elements of a product on the production lines and facilitates popularization and generalization of a laser probe technology, and the application cost of the laser probe instrument can be substantially reduced.

The invention provides an on-line monitoring device for water pollution. The device comprises a sampling unit and a monitoring unit, wherein the sampling unit comprises an underwater monitoring tank, sensors and a telescopic rod; the monitoring unit comprises a housing, controllers, a power source, a remote monitoring data acquisition card, a peristaltic pump and a water sample barrel; the two units are connected with a water pipe through cables; the sensors can be placed in the underwater monitoring tank or the water sample barrel according to the water condition; a plurality of sensors and a water pipe inlet are arranged in the underwater monitoring tank, and sampling and monitoring of water at different depths are completed by the telescopic rod; the controllers receive and process signals of the sensors, data is wirelessly transmitted to an industrial computer or a mobile phone by the remote monitoring data acquisition card, and accordingly, real-time on-line monitoring of the water pollution is realized; the peristaltic pump draws a water sample forward to the water sample barrel through the water pipe and flushes the sensors backward; the housing of the device is portable, and a fixed or photovoltaic power supply is used for supplying power. The invention further provides an on-line monitoring method for the water pollution.

The invention discloses a method for detecting activity of an antivirus medicament, and belongs to the technical field of the method for detecting property of the medicament. The method comprises the following steps of: (1) selecting microorganisms or cells corresponding to treatment indication of a to-be-detected medicament; (2) adding the to-be-detected medicament into the microorganisms or cells selected in the step (1) for culturing; and (3) placing the microorganisms or cells in which the to-be-detected medicament is added into a trace calorimeter to obtain a thermo-gram curve for growth and metabolism of the microorganisms or cells, and measuring the activity of the medicament according to the slope of the thermo-gram curve and the maximum heating power. The invention also comprises application of the detection method to measuring the heat clearing and detoxication activity of indigowoad root. The method of the invention can represent characteristic information during intervention of the microorganisms by the medicament, can acquire real-time online dynamic data and has the characteristics of real-time, online, high speed and accuracy.

The invention relates to an optical fiber grating anchor stress sensor, which comprises a force measuring pedestal and a first prague optical fiber grating which is arranged on the force measuring pedestal, wherein the first prague optical fiber grating is connected with an optical wavelength demodulator through optical fiber; the force measuring pedestal has a hollow structure and comprises a head part, a neck part and a shoulder part; a force transferring nut is arranged inside the force measuring pedestal; both the upper part and the lower part of the force transferring nut are a cylinder, and the middle part of the force transferring nut is a circular platform; the force transferring nut is matched with an inner cavity of the force measuring pedestal; the force transferring bevel on the outer edge of the circular platform on the force transferring nut and a force bearing bevel on the inner wall of the force measuring pedestal are contact surfaces; a fixed support and an adjustable support are arranged on the outer wall of the force measuring pedestal corresponding to the force bearing bevel on the inner wall of the force measuring pedestal; an adjusting plate for adjusting the position relative to the fixed support is arranged on the adjustable support; both ends of the first prague optical fiber grating are fixed on the adjusting plate and the fixed support respectively; and the part of the first prague optical fiber grating positioned between the adjusting plate and the fixed support is hung in the air. The optical fiber grating anchor stress sensor is used for online detection of the tensile and compressive stress of all the anchors and anchor cables.

The invention provides a high-voltage power line wireless temperature acquisition system, comprising a temperature node, a router, terminal equipment and an upper computer; the data of the temperature node is transmitted to the nearby terminal equipment or the router, and the data received by the router is forwarded to the terminal equipment, and the terminal equipment is connected with the upper computer; the terminal equipment receives the setting and a command of the upper computer, and the temperature data is transferred to the upper computer for displaying through a serial interface. In the invention, low power consumption temperature node which is power-supplied by a lithium battery is adopted, and the data is transmitted in a wireless way, the system is easy to install, the operation is safe and stable, anti-jamming capacity is good, and the accuracy and reliability of temperature detecting data are ensured, the power consumption of the temperature node is reduced by more than 3 times compared with the prior art, the service life of the battery is greatly prolonged, real-time on-line is carried out, the response speed is rapid, the volume is small, a great amount of manpower and physical resources are saved.

The invention relates to a method for detecting the imperfection of food grains. The method comprises the following steps: acquiring collision sound information of each food grain and a specific object, extracting set characteristic information from the collision sound information, and comparing and judging imperfect grains in the food grains according to the characteristic information. The method disclosed by the invention has the following advantages that an impact excitation sound signal of the food grains and a metal plate in the free falling body process is utilized, and the imperfect grains are detected by virtue of extraction and analysis of the characteristic parameters of the signal, so that the detection method has the non-contact characteristic. In the whole detection process, the physical structures of the food grains do not need to be damaged, so that the detection method has the nondestructive testing characteristic; and moreover, according to the detection method, special requirements and limitations on the types and falling postures of the food grains are avoided, and the universality is high.

The invention relates to a device and a method for monitoring the subsidence of a jacket platform based on inclination angle monitoring, which belong to the technical field of monitoring of jacket platforms. The device comprises inclination angle sensors, transmission wire cables, a data acquisition mechanism and a host monitor, wherein the inclination angle sensors are connected with the data acquisition mechanism which is connected with the host monitor; and spud legs and cross beams between the spud legs are arranged on the jacket platform, and the inclination angle sensors are installed on the cross beams of the jacket platform. In the method, the inclination angle sensors are arranged on the cross beams of the jacket platform, the host monitor acquires inclination angle signal data of the inclination angle sensors on the jacket platform in real time through the data acquisition mechanism, and the comparative analysis is carried out on the inclination angle signal data and a preset value for monitoring the subsidence of the jacket platform. The device and the method have the advantages of convenience in monitoring, real-time on-line monitoring, quick response, accurate data, graded pre-warning, security, reliability and the like.

The invention relates to an urban heating data collecting device and a heating centralized monitoring method. The urban heating data collecting device is provided with a data collector; an input terminal receives and stores heating detection data from a measuring instrument and is connected with a wireless data transmission unit by a communication interface; the wireless data transmission unit sends the data stored by the data collector to a monitoring management center by a radio communication network; the heating centralized monitoring method comprises the following steps that: the heating data collecting device detects heating data of a heating unit by the measuring instrument; the heating data is collected by the heating data collecting device; according to a communication protocol, the heating data collecting device receives a command from the monitoring management center and sends the heating data to the monitoring management center by the radio communication network; the monitoring management center receives the heating data and outputs analytical results. The urban heating data collecting device and the heating centralized monitoring method can carry out real-time and on-line collection of operating data of the heating unit, improve the heating quality, carry out scientific examination on a heating enterprise and provide an effective scientific basis and a management platform for government sectors.

The invention relates to an on-line GPS (Global Positioning System) night patrol positioning system which is capable of monitoring and positioning night-patrol information on line at real time, is applicable to industries such as petrochemical engineering and industrial and mining enterprises, and is particularly applicable to monitoring on security and protection systems. The system consists of a control center and a terminal system, wherein the control center comprises a management computer, a GIS (Geographic Information System) positioning display terminal and a wireless receiving base station; the terminal system consists of a GPS night-patrol positioning alarm and a linked system; the control center and the terminal system are in data communication in a wireless communication mode; the night-patrol positioning information is transmitted to the control center through the terminal system. The system integrates functions of GPS positioning, GIS map display, night-patrol alarm, wireless transmission, on-line monitoring and the like, so as to solve the problem of on-line real-time night-patrol positioning in the prior art; as shared frequency is used in data transmission, time delay is prevented, and no expense is needed, the operation cost is greatly lowered; and meanwhile intelligent linkage with other security and protection systems based on GIS information can be achieved.

A method for testing pressure-sensitive property of pressure-sensitive cement based material includes setting four mesh metal electrodes in parallel to each other, burying them in cement based material then solidifying said material, exerting DC voltage between two electrodes at external side for measuring out the first resistance between two electrodes at internal side, exerting pressure at vertical direction of mesh electrodes for measuring out the second resistance at internal side then confirming relation of pressure to resistance variation rate.

The invention relates to a wireless network remote monitoring method for oil smoke purification, which comprises the following steps: 1) an oil smoke data acquisition system automatically senses and monitors the concentration of the harmful gas and the inflammable gas in the surrounding environment in a monitoring point and the gas concentration of the oil smoke which is discharged from an outlet of an oil smoke purifier, and saves the relevant data into the data acquisition system of a monitoring device in the monitoring point; 2) GPRS terminal extracts the monitoring data from the data acquisition system of a monitoring substation in the monitoring point; 3) a transmission system utilizes an existing GPRS network and an Internet network to transmit the monitoring data to a monitoring center; 4) the monitoring center receives and saves the monitoring data at first and then summarizes, collates and comprehensively analyzes the data. The wireless network remote monitoring method for the oil smoke purification of the invention has the advantages of low investment, and can realize the real-time and online monitoring the working condition of the oil smoke purifying equipment and discharge condition of the oil smoke without the limitation of the environment and the region, thereby enabling the management and the monitoring for an environmental protection equipment and the emission index of the oil smoke to realize the systematization, the standardization and automatization, and being convenient for an enterprise to control the discharge amount of the oil smoke in an established index at the same time.

The invention provides a remote natural gas metering system which comprises a field acquisition transmission unit and a central control system. The field acquisition transmission unit comprises a combustible gas detector, a plurality of flow meters, a remote terminal device and a power supply module. The central control system comprises a metering statistical system, a comprehensive management system and a data server. The remote natural gas metering system has the advantages of achieving acquisition, storage, analysis, statistic and the like of metering data and various data, achieving automatic management of natural gas metering data and metering equipment and achieving safety monitoring and remote warning functions of metering rooms.

The invention discloses a metal pipeline defect positioning detecting device and method based on magnetic collecting surface scanning, which belongs to the technical field of pipeline non-destructivedetecting. The device comprises a permanent magnet, a fiber magnetic sensitive probe array, a signal connecting optical cable, a fiber coupling module, a sensing light source module, a photoelectric conversion module, a three-dimensional spatial positioning module and a signal processing module. The method comprises the steps that magnetic collecting surface scanning is carried out on a metal pipeline to be detected; the magnitude of returned optical power is measured; and if the magnitude of the returned optical power changes, the metal pipeline to be detected has a defect, and otherwise themetal pipeline to be detected has no defects. The device provided by the invention has the characteristics of high safety, wide application range, high sensitivity and high spatial resolution.

The invention relates to a moisture measuring device comprising a shell, a shunting and rectifying device and an electrode module. The lower end of the shell is open; the electrode module is fixed outside the shell and comprises a plurality of conductive meal plates and a temperature electrode; an insulating plate is arranged between every two conductive meal plates; the odd conductive meal plates are connected, and the even conductive meal plates are connected; the conductive meal plates are respectively connected with corresponding wiring terminals of an electrode wire socket which is arranged on the shell through conducting wires; the temperature electrode is arranged in a temperature electrode insertion hole of one conductive meal plate and is connected with the corresponding wiring terminal of the electrode wire socket through a conducting wire; and the shunting and rectifying device is in the shape of a wedge and is fixed on the front end of the shell. The moisture measuring device can run stably, is reliable and convenient to assemble, disassemble and maintain, has high moisture measuring precision, simple structure, small volume, light weight of only 7.5 kg and low manufacturing cost, is manufactured from less material and can not be restricted by the installation environment.

The invention discloses an optimized particle swarm BP network prediction method and system based on clustering. The method comprises the steps that a database is established to store data measured bya monitor in real time; after the original data are preprocessed, similar data are classified into one class through clustering, so that the accuracy of a prediction model is improved; the initial weight and the threshold value of the BP network are assigned through the optimized particle swarm optimization algorithm, and compared with initialization of the weight and the threshold value througha random number, the convergence speed of the BP network can be increased on the basis that the BP network is prevented from falling into local optimum; a Sigmoid function is selected as an activationfunction, a BP network weight and a threshold value are updated by adopting a back propagation algorithm, a final model is obtained through training, and a prediction result is output. According to the method, the problems of inaccurate nonlinear data prediction and low prediction precision of traditional regression classification and other prediction models are solved, and the accuracy of a prediction result is effectively improved.

A micro-flow detection method based on recognition of droplet images at a pipeline outlet comprises the steps of collecting the droplet images at the pipeline outlet through continuous shooting by a webcam or a camera; and subjecting the collected droplet images to a droplet image pretreatment algorithm, a droplet contour detection algorithm, a droplet volume numerical integration algorithm, a droplet volume change rate algorithm and the like to obtain the volume change rate of the droplets, and calculating the liquid capacity in the pipeline in real time. The micro-flow detection method based on the recognition of the droplet images at the pipeline outlet can perform real-time, on-line, accurate, low-cost and non-contact type flow detection on the liquid in a single pipeline or in a plurality of pipelines simultaneously, is particularly suitable for the detection of micro-liquid capacity in micro-pipelines with millimeter-scale, submillimeter-scale and micron-scale diameters, and can be extensively applied to micro chemical engineering devices and micro fluid systems such as a microfluidic system, a micro-electro-mechanical system, a liquid chromatograph and the like.

The invention provides a fiber grating-based transformer internal temperature detection system, which comprises a light source, fiber grating sensors, a grating signal demodulation system, a signal processing display instrument and data analysis software, wherein the fiber grating sensors are arranged on a winding and a strut of a transformer and sensing points at other positions in the transformer and used for sensing measurement of transformer temperature, stress and local discharge parameters; the grating signal demodulation system receives the measured data of the fiber grating sensors, and accurately demodulates corresponding light signals of the temperature, stress and local discharge parameters; the signal processing display instrument performs correction processing such as temperature compensation, stress sensitivity removal and the like on the measured signals, and displays real-time data on an instrument panel; and the data analysis software performs programming software analysis on the processed data to acquire real-time transformer internal temperature field and temperature change, and then performs transformer internal temperature monitoring and full service life assessment. The system realizes real-time measurement of temperature of multiple points in the transformer through the photoelectric sensors, and provides a good foundation for economic operation of the transformer.

The invention discloses a refractometer for self-reference of light source distribution and belongs to the field of photoelectric technologies and optical instruments. The refractometer comprises a light source illumination system used for generating divergent beams, an optical sensing head, a reflected light energy collecting system and an image acquisition and analysis system, wherein the optical sensing head comprises a reference module and a prism; the reference module is attached to the bottom surface of the prism; during working, light spots formed after divergent beams are shot into the prism are divided into a first part of light beams located in the reference module and a second part of light beams located outside the reference module, the first part of the light beams are completely reflected, part of light from the second part of light beams is reflected, and part of light from the second part of light beams is refracted; the first part of light beams are used for self-reference of light source distribution, and the second part of light beams are used for measuring parameters of a to-be-measured liquid. The technical problems of complicated and tedious acquisition process of reference light in the refractometer, non-real-time acquisition and the like are solved.

The invention provides an illegal sewage discharge monitoring method and device and a computer readable storage medium. The method comprises the steps of obtaining a plurality of groups of to-be-processed images collected in a to-be-monitored water area at the same moment and different monitoring points, wherein each group of to-be-processed images comprise a thermal imaging image collected at thesame monitoring point; converting each thermal imaging image into a grayscale image, and calculating an average grayscale value of each grayscale image; calculating an average grayscale difference between every two grayscale images; if the average grayscale difference exceeds a set error threshold range, determining that a discharge port exists in the to-be-monitored water area for sewage discharge; determining an image block area corresponding to the to-be-monitored water area in the same grayscale image; detecting a grayscale difference between the minimum grayscale value and the maximum grayscale value in the image block area; comparing the grayscale differences of the grayscale images, determining the grayscale image with the maximum grayscale difference as a target grayscale image ofthe position where the discharge port is located; and carrying out sewage discharge alarm on the water area to be monitored.

The invention discloses a pipeline magnetic flux leakage detection device based on an optical fiber coupling diamond-nitrogen vacancy color center. A light generator is communicated with a magneto-optical conversion part fixed on a plastic disc through an optical fiber A; the magnetizer penetrates through the plastic disc and the permanent magnets are fixed at two ends; a convex lens A, an optical filter, a convex lens B and a photoelectric conversion device are arranged behind the optical fiber B; the photoelectric conversion device and the microwave generation device are connected with the lock-in amplifier; and the microwave generating device is connected with the microwave amplifying device and the copper wire in sequence. The magneto-optical conversion part transmits optical wave signals with leakage magnetic field information out of the pipeline through the optical fiber B. The optical filter filters redundant green light, the light is focused on the photoelectric conversion part through the convex lenses A and B, the photoelectric conversion part converts optical signals into electric signals, the electric signals are analyzed, and the leakage magnetic field information is obtained. Therefore, the corresponding defect size and position of the inner wall of the detected pipeline are obtained. The method has the advantages of high sensitivity, wide application range, high spatial resolution, capability of realizing distributed measurement and the like.

The invention relates to a wireless temperature sensing device, which comprises a wireless temperature sensor and a wireless temperature signal collector, wherein said wireless temperature sensor is formed by power source, temperature sensing element, control circuit, and radio receiving / sending circuit; the temperature sensing element is connected to the analogue signal input of control circuit; the control circuit via SPI bus is connected to the radio receiving / sending circuit; the wireless temperature signal collector is formed by power source, stabilizing circuit, control circuit, radio receiving / sending circuit and memory; the control circuit via SPI bus reads and writes the radio receiving / sending circuit and memory; the wireless temperature sensing device operates via preset manage control software, uses TDMA boost frequency expansion and frequency boost mode; and it will sleep after sending one information, to be set as the intermission working mode whose occupy ratio is above 1000. Therefore, the invention has low cost, high reliability and online property.

The invention relates to a biotoxicity detection system based on a big data technique. The biotoxicity detection system comprises a plurality of biotoxicity detectors, a big data platform and a monitoring display terminal, wherein every two of the biotoxicity detectors, the big data platform and the monitoring display terminal are in communication connection; the biotoxicity detectors are used for detecting the biotoxicity of water quality, used for obtaining detection data, used for analyzing and treating the detection data to obtain treatment results, and used for transmitting the treatment data to the big data platform; the big data platform is used for integrating the treatment results of each biotoxicity detector into a biotoxicity comparison database, and used for sharing the data in the biotoxicity comparison database with each biotoxicity detector; the monitoring display terminal is used for receiving the treatment results from the biotoxicity detectors or through the big data platform, used for displaying the treatment results and used for performing remote monitoring on the biotoxicity detectors. By adoption of the biotoxicity detection system, the water quality biotoxicity detection efficiency can be greatly improved.

The invention discloses an incremental online characteristic extraction and analysis method and system. The method comprises the steps of storing industrial control time sequence data to a database; preprocessing original data to obtain clean data; extracting characteristic data by a characteristic extraction module and storing the characteristic data to a characteristic data table; monitoring an original data amount of a database system in real time by an incremental trigger; and when a triggering threshold is exceeded, triggering the characteristic extraction module to incrementally read original data and extract corresponding characteristics, and storing the original data and the corresponding characteristics into the characteristic data table. The method and system have the advantages that an incremental characteristic extraction and analysis framework is proposed; an incremental triggering supervision program is added; the monitoring of the database system and the incremental extraction of the characteristics are realized; the real-time online extraction of the characteristics and the online analysis of the data are finally realized; the efficiency is high; and the extendibility is high.

The invention discloses an apparatus and a method used for radar online detection of the surface shape of a blast furnace burden surface. The apparatus comprises a radar detector, an on-site control box, a power conditioner, an indoor control box, a display, an industrial computer and a single converter; the radar detector is connected to the industrial computer by the on-site control box; the radar detector, the on-site control box and the indoor control box are connected successively in series so as to form a branch circuit which is connected to the industrial computer; the industrial computer is connected to the display and the signal converter respectively; the power conditioner is connected to the indoor control box. The method comprises following steps: radar signals are emitted and received by ranging radars, and are transferred to the industrial computer; the height of the blast furnace burden surface is calculated by the industrial computer based on obtained parameters, and a shape model of the blast furnace burden surface is built; real parameters and prescribed technology parameters are compared by the industrial computer, and if the difference of the real parameters and the prescribed technology parameters excesses a set value, an alarm device is triggered. The method of the invention is capable of realizing real-time and accurate detection of the height and the surface shape of the blast furnace burden surface by using radar ranging technology.

The invention relates to an on-line monitoring device and method of a photovoltaic array. The photovoltaic array comprises a plurality of photovoltaic array set strings, which are respectively provided with a combiner box. Each combiner box is provided with an inverter. The on-line monitoring device comprises a host computer, a concentrator and a plurality of collectors. The on-line monitoring device and method are advantageous in that a suspension wire type Hall open loop current sensor is adopted, and the design of the combiner box is not affected, and thereby the on-line monitoring device can be used in the design of new program of a photovoltaic power station, and also in the intelligent upgrading of the current photovoltaic power station; as electric power carrier wave technology is adopted, no extra communication cables are required and cost can be saved; power line communication network belongs to plug-and-play network, which means by connecting power supply, the communication network can be accessed to, and real-time on-line operation can be realized; with the automatic route function, the communication network can be more flexible, and signals will not be obstructed; the structure is simple and application is convenient, and application scope is wide.

The invention provides an on-line blast furnace charge level measuring system and method. The on-line blast furnace charge level measuring system comprises a first laser scanner and image processing equipment connected with the laser scanner; the first laser scanner is installed at the top of a blast furnace to scan complete charge level information and transmit the charge level information to the image processing equipment, the image processing equipment generates a three-dimensional charge level image of the blast furnace charge level according to the charge level information, and the first laser scanner is a three-dimensional laser scanner. The charge level is comprehensively scanned through the three-dimensional laser scanner installed in the blast furnace and a slide way of a fixing rod, the scanning process is high in automation degree, short in measuring time, high in measuring accuracy, and on-line real-time and complete three-dimensional charge level images can be obtained to obtain charge level information meeting the practicality better then. The requirements for observing the charge level shape more visually and obtaining the chare level information more completely are met truly.

The invention relates to a shield construction system based on a ground penetrating radar, comprising a shield machine and the ground penetrating radar, wherein the shield machine is connected with the ground penetrating radar through a signal transmission system combining a wireless signal transmission mode with a wired signal transmission mode; the ground penetrating radar and a wireless signaltransmission module of the signal transmission system adopt a DC power supply system for a power supply; the power supply of the DC power supply system is obtained by carrying out voltage and frequency transformation processing on commercial AC; and the ground penetrating radar is arranged in front of a cutterhead of the shield machine by adopting a specially designed projection structure. The invention has innovative application of installing the ground penetrating radar on the cutterhead of the shield machine for detecting front geology, can enable the ground penetrating radar to be used for normally operating in an underground construction environment without being damaged by external conditions, effectively ensure the radar power supply, also realize good information transmission through the ground penetrating radar and a computer inside a control chamber of the shield machine and be widely used in the fields of various underground constructions and tunnel constructions, and the like.

A network digital instrument for sensor with GPRS function comprises a signal control processing circuit, a GPRS communication functional module and the power supply circuit of the module. The invention adopts the following key technical points: the measurement chip U3 which is arranged inside the signal control processing circuit is connected with the 4 mA-20 mA standard signal of any sensor P used in industrial field; data transmission is directly connected with a control processing chip U1 which is connected with a GPRS communication functional module U11; data is transmitted and received by means of the U11 via a mobile communication network. With reasonable and simple structural design, better anti-interference performance, easy operation and convenient adjustment, the invention not only provides reliable guarantee for online automatic measurement and transmission of manufacturing parameter in complex industrial production field, but also reduces measurement cost and substantially increases accuracy and timeless of measurement; moreover, the invention greatly increases work efficiency and reduces labor intensity, thereby being more suitable for monitoring operation with exposure to toxic and harmful chemicals.

The invention relates to a novel fluorescent optical fiber temperature testing system of a switch cabinet, which comprises a tester and a temperature measuring system, wherein the tester mainly comprises a housing, a power switch, a display screen, an alarm lamp, a sensor interface module, optical fiber sensor interfaces, an optical fiber, a fluorescent probe, a communication interface and a controller; the temperature measuring system comprises fluorescent optical fiber sensors, shunt boxes and a PC (Personal Computer); the fluorescent optical fiber sensors mainly comprise fluorescent probes and optical fibers; the sensor interface module is arranged on the housing; the optical fiber sensor interfaces are arranged on the sensor interface module; the power switch, the display screen, the alarm lamp and the communication interface are arranged on the surface of the housing; the controller is arranged in the housing; the fluorescent optical fiber sensors are connected onto the tester via the shunt boxes; and the tester is connected with the PC via the communication interface. The system achieves on-line detection, can isolate high voltage in the switch cabinet and has the advantages of stability, reliability, real time, on line, no maintenance, automatic operation and the like.

The invention relates to a photovoltaic branch monitoring system used for electricity steeling prevention. The photovoltaic branch monitoring system is technically characterized by comprising three high voltage load acquisition devices, a solar overhead substation and a remote receiving terminal. The output ends of the high voltage load acquisition devices are connected with the solar overhead substation. The output end of the solar overhead substation is connected with the receiving terminal. An external power supply is not required, and installation and disassembling are not interfered without power outage so as to be simple and convenient, great in concealing and low in cost and economical and practical. Besides, selectable and replaceable multimode high voltage load acquisition devices and the solar overhead substation are utilized to perform group notification of relevant personnel and form three-dimensional evaluation groups, the acquired three-phase high voltage load data are screened and analyzed in a targeted way, electricity steeling users are accurately determined, and inspectors, experts and leaders are enabled to simultaneously perform analysis and communication online so that large amount of manpower and material resources can be saved.