99results about How to "Realize remote detection" patented technology

The invention relates to a fibre optic gas detector for the fire hazard of a coal gab area, comprising a light source, a probe, a photodetector and a signal processing unit, wherein light emitted by the light source is led into the photodetector by the probe so as to be converted into electrical signals, and the electrical signals are led into the signal processing unit to be processed. The fibre optic gas detector is characterized in that an optical circulator is arranged on a light path between the light source and the probe, the light source is connected with the first port of the optical circulator, the probe is connected with the second port of the optical circulator, the third port of the optical circulator is connected with a photoelectric converter, the probe is of a multi-time reflection type white cell structure, and a terminal optical fiber collimator and a fibre reflecting mirror are arranged on the exit end of the white cell.

The invention discloses a liquid level detection device, which comprises at least one magnetic sensor with zero power consumption; a track vertically arranged in the liquid to be measured in a position opposite to the magnetic sensor; a floating ball on the liquid surface; a positioning sheet fixed on the floating ball; and a magnet fixed at one end of the positioning sheet, wherein the other end of the magnet is arranged in the track. The magnetic sensor made of magnetically bistable alloy filaments can induce the position of the floating magnet to convert liquid level into an electric signal, which is transmitted remotely through a cable wire, and the sensor detects the level height according to the induction of magnets at corresponding height without using a power supply and mechanical contacts, thus obviating the generation of electrical sparkles, saving power and achieving safe operation, no mechanical contacts and high reliability. The detection result can be transmitted remotely beyond 1,000 meters to achieve remote detection. The liquid level detection device has the advantages of simple structure, practical use, and wide application range, and is used for remote level detection of inflammable liquid and for remote level detection of liquids of other fields such as chemical engineering, mine and civil fields.

The invention discloses a comprehensive detecting device for detecting internal defects of a drainage pipeline. The comprehensive detecting device comprises an equipment carrier capable of floating on water, wherein a camera capable of detecting the part above the pipeline water is arranged on a water part of the equipment carrier, and a camera illuminating lamp is arranged; a sonar sensor capable of detecting the pipeline underwater part is arranged on an underwater part of the equipment carrier; and controlling and receiving signals of the camera and the controlling and receiving signals of the sonar sensor are respectively connected with a controller by virtue of a cable. The comprehensive detecting device disclosed by the invention has the characteristics of complete functions, wide detecting range, safe and reliable work, and the like, and can be used for comprehensively detecting the internal conditions of the drainage pipeline.

The invention relates to a method for measuring the parameter of an omega welding seam defect, in particular to a method for measuring the parameter of an omega welding seam defect, which is applied to a control rod drive mechanism of a nuclear power plant. The method adopts a welding technique estimation test piece of the omega welding seam to manufacture a contrast test block, adopts an automatic detection device containing an ultrasonic detection method and a vortex detection method to measure the parameter of the defect and judges the parameter of the defect integrally. The method can effectively measure the parameter of the omega welding seam defect of the control rod drive mechanism of the nuclear power plant accurately, provides data support for the preventive maintenance of the control rod drive mechanism, provides guarantee for the nuclear safety and is suitable for detecting the parameter of the welding seam defect in nuclear industry system.

The invention relates to an operation error remote calibrating method of an intelligent ammeter. The method comprises the following steps: (1) installing an intelligent ammeter cluster to form a tree-shaped topological structure; (2) to obtain a flow conservation foundation model of the intelligent ammeter cluster; (3) importing a virtual branch circuit to dynamically correct an intelligent ammeter cluster topological model, to obtain a flow conservation algorithm model; (4) to obtain electric current incremental data of the intelligent ammeter cluster repeatedly, and calculating a relative error; (5) correcting a calculation result and uncertainty evaluation; and (6) to obtain an error calculation result. The method is capable of, in allusion to 0.48 billion of the on-line operated intelligent ammeters in state grid corporations, applying a full data sample thinking mode, mining mass electric energy data of a power consumer electricity information collection system without the help ofan external standard instrument, carrying out the remote verification technical research of the intelligent ammeters, enabling both power supplier and consumer to master the accuracy of an electric energy metering device in real time, satisfying the expected requirement of clients, and improving the corporate image.

The invention relates to a THz radiation reinforcing method through a light line array, which comprises the following steps: calibrated femtosecond laser are focused by a focusing lens to generate light line; a BBO crystal is mounted behind the focusing lens to generate a two-color field; a step-type phase plate is mounted in front of the focusing lens to generate controllable light line array to reinforce the THz radiation. Compared with the conventional THz radiation reinforcing method, the method provided by the invention has the advantage that a simple, compact, and feasible structure is provided; the generated THz is impulse light wave, has higher average power and signal-to-noise ratio compared with THz generated without the phase plate, and can be applied to THz remote detection; the THz radiation reinforcing method can reinforce THz radiation power, increases the signal-to-noise ratio, and can be applied to THz spectral analysis.

The invention belongs to the technical field of water quality detection, and particularly relates to an online water quality detection method based on an unmanned aerial vehicle, which comprises the following steps: step 1, debugging equipment, a sampling module and a detection module are installed on the unmanned aerial vehicle, and normal communication between the unmanned aerial vehicle and a remote terminal is ensured; step 2, sampling: the unmanned aerial vehicle releases the sampling module, and the sampling module enters the water body of the target water area to collect samples of thewater body; step 3, detection: the sampling module releases the water body sample to the detection module, and the detection module detects the water body sample; and step 4, the steps 2 and 3 are repeated to complete water quality detection of all target water areas. According to the unmanned aerial vehicle water quality detection method provided by the invention, fixed-point rapid sampling of alarge-area water area can be realized; meanwhile, an airborne detection module is carried, so that remote detection of water quality parameters and remote transmission of data are realized, the waterquality detection efficiency of a large-area water area is improved, a water area water quality distribution diagram can be established, and more intuitive and accurate detection data is provided.

The invention belongs to the range of heavy metal ion detection equipment and particularly relates to an optical fiber sensing system for simultaneously and rapidly detecting multiple types of heavy metal ions.The detection system is composed of a light source module (1), a transmission module (2), a sample loading and detecting module (3) and a photoelectric detection module (4) which are sequentially connected; a wavelength-division multiplexing technology in optical fiber communication and novel fluorescent dye quantum dots are adopted for the system, and two light paths are not needed to be separated through an optical loop device.By means of the optical fiber sensing system for simultaneously and rapidly detecting multiple types of heavy metal ions, simultaneous and rapid detection of multiple types of heavy metal ions can be achieved, miniaturization and portability of an instrument are achieved at the same time, and remote detection, real-time analysis, filed detection and dynamic monitoring are achieved; instrument cost is lowered; by means of the system, multiple types of heavy metal ions in a solution can be detected simultaneously and rapidly, and the optical fiber sensing system is widely applied to the fields of environmental detection, industrial sewage treatment, soil heavy metal pollution, food hygiene inspection, medical application and the like.

The invention relates to an error control method for online operating smart electric energy meters based on full sample data thinking. The method comprises the following steps: (1) installing a smartelectric energy meter cluster to form a tree topological structure; (2) introducing a virtual branch to correct a smart electric energy meter cluster topological model; (3) eliciting a flow conservation algorithm model; (4) acquiring the sample data of all smart electric energy meters; (5) substituting all the sample data into the flow conservation algorithm model to calculate the errors of all the smart electric energy meters; and (6) realizing precise control according to the error results of all the smart electric energy meters. The method applies the full sample data thinking to the 480 millions online operating smart electric energy meters of the state grid corporation, excavates massive electric energy data of a power user electric information acquiring system, measures the error data of all electric energy meters, uses whole data instead of a random sample, requires no external standard equipment, carries out smart electric energy meter remote calibration technology research, and enable power supplier and consumers to be able to understand the accuracy of energy metering devices in real time.

The invention provides a method for detecting the roadbed strain by an optical fiber sensing technology. The method comprises the following steps: collecting virtual strain parameters of multiple monitoring points in a structural layer by utilizing a strain optical fiber sensor in multiple structural layers of roadbed, and collecting temperature parameters of multiple monitoring points by utilizing a temperature optical fiber sensor laid in the structural layer; acquiring virtual strain parameters from multiple monitoring points of a strain optical sensor, and acquiring temperature parametersfrom multiple monitoring points of a temperature optical sensor; calculating the differential value of corresponding virtual strain parameters by utilizing the temperature parameters to obtain accurate strain parameters of the multiple monitoring points; and determining the strain situation of the roadbed according to the accurate strain parameters of multiple monitoring points. According to the method, the detection steps can be simplified, deformation characteristics of the roadbed in the constructing period and operation period can be completely mastered, automatic monitoring and data collection of unattended operation can be realized, and far-distance detection can be realized.

The invention discloses a dynamic-sounding automatic test instrument. The dynamic-sounding automatic test instrument comprises a hammer base. A drill stem is detachably mounted at the bottom of the hammer base. A probe is mounted at the bottom of the drill stem. A guide rod is mounted at the top of the hammer base. A center penetration hammer is movably mounted on the guide rod. A data processingmodule, a laser ranging module and an acceleration module are arranged at the bottom of the hammer base, and the laser ranging module and the acceleration module are connected with the data processingmodule. The laser ranging module is used for measuring distance data between the bottom of the hammer base and the ground and sending the distance data to the data processing module. The center-penetration hammer hammers the hammer base repeatedly, the distance data are measured every time hammering is completed, and the data processing module works out the sounding depth according to the multiple pieces of distance data. The acceleration module is used for measuring the acceleration speed and speed of downward movement of the drill stem after every time of hammering and sending measured datato the data processing module. The data processing module determines whether every time of hammering is effective according to the acceleration speed and speed data. The dynamic-sounding automatic test instrument can achieve automatic measurement, judgment, recording and data processing and is high in efficiency and precision.

The invention belongs to the technical field of water quality detection, and particularly relates to a water quality detection system based on an unmanned aerial vehicle. The system comprises the unmanned aerial vehicle, a sampling module and a detection module, and the detection module and the sampling module are both carried on the unmanned aerial vehicle; and the unmanned aerial vehicle is alsoprovided with a retracting and releasing device for releasing the sampling module into a to-be-detected water body and recovering the sampling module from the to-be-detected water body to the unmanned aerial vehicle, the sampling module is used for collecting a to-be-detected water body sample, the detection module is used for detecting the sampled water body sample, the unmanned aerial vehicle is provided with a wireless communication module, and detection data of the detection module are sent to a remote terminal through the wireless communication module. The unmanned aerial vehicle water quality detection system provided by the invention can realize fixed-point rapid sampling of a large-area water area; and meanwhile, the airborne detection module is carried, so that remote detection of water quality parameters and remote transmission of data are realized, the water quality detection efficiency of the large-area water area is improved, a water area water quality distribution diagram can be established, and more intuitive and accurate detection data are provided.

The invention discloses an underwater structure surface defect detection robot system. The underwater structure surface defect detection robot system comprises an underwater robot detection unit, a cable device unit and a positioning array unit; the underwater robot detection unit comprises a frame; a binocular camera is fixed at the front part of the frame; a six-degree-of-freedom propeller is fixed at the rear part of the frame; a positioning module and a control module are fixed at the upper part of the frame; a battery compartment is fixed at the middle part of the frame; the cable deviceunit is connected with the control module through a cable; a wire net card module is arranged in the cable device unit; multiple hydrophones are arranged at the lower part of the positioning array unit; a bin body is arranged in the positioning array unit; and a signal processing module and an optical fiber module are arranged on the bin body. The invention further discloses a corresponding working method. According to the underwater structure surface defect detection robot system and the working method thereof, underwater structure surface defect images can be remotely collected and analyzedin real time; and meanwhile, defects can also be measured and analyzed to improve the intelligence level of underwater structure surface defect detection.

The invention relates to a remote running error correction method for intelligent gas meters. The method comprises the steps that 1, clustering installation is conducted on the intelligent gas metersto form a tree topological structure; 2, a flow conservation basic model of a intelligent gas meter cluster is obtained; 3, pipeline loss error correction is conducted, and a virtual branch is introduced to dynamically correct a intelligent gas meter cluster topological model, so that a flow conservation algorithm model is obtained; 4, multiple pieces of gas flow increment data of the intelligentgas meter cluster is obtained, and a relative error is calculated; 5, uncertainty evaluation is conducted on a calculation result; 6, an error calculation result is obtained. By means of the method, the costs of marketing and operating can be effectively reduced, and loss of resources such as workers, vehicles and equipment in a check process can be greatly reduced; moreover, through achievement of remote checking, precise replacement of broken-down intelligent gas meters can be achieved, and the number of trouble-free intelligent gas meters which are dismounted can be lowered, which is greenand environmentally-friendly; a purpose fund is saved, so that the operational and maintenance costs of an enterprise are greatly reduced, quality and efficiency improvement is achieved, and significant economical benefits and social benefits are provided.

The invention discloses a high-accuracy handhold digital oscilloscope which comprises a data collecting circuit, a low-pass filtering circuit, an A/D converter, a data transmission module, a spectral analysis and parameter adjustment circuit, a waveform display circuit and a microprocessor. A signal output end of the data collecting circuit is connected with a signal input end of the low-pass filtering circuit. A signal output end of the low-pass filtering circuit is connected with a signal input end of the A/D converter. A signal output end of the A/D converter is connected with a signal input end of the data transmission module. Signal output ends of the data transmission module are connected with a signal input end of the spectral analysis and parameter adjustment circuit and a signal input end of the waveform display circuit. A signal output end of the spectral analysis and parameter adjustment circuit and a signal output end of the waveform display circuit are connected with a signal input end of the microprocessor. According to the technical scheme, the high-accuracy handhold digital oscilloscope overcomes the shortcoming that a traditional oscilloscope cannot store and analyze detecting results, and the measuring accuracy of a whole system is improved.

The invention discloses a novel mobile type hot-water boiler efficiency testing platform and a method. The novel mobile type hot-water boiler efficiency testing platform comprises a truck body; the truck body is provided with an integrated control room, a heat exchange room and a cooling room; a PLC control system and a display are arranged in the integrated control room; a cooling water tank is arranged in the cooling room; a first heat exchanger and a second heat exchanger are arranged in the heat exchange room; the cooling water tank, the first heat exchanger and the second heat exchanger are sequentially connected with one another through a cooling water pipe; a boiler hot water pipeline is arranged in the heat exchange room; the boiler hot water pipeline is connected with the first heat exchanger and the second heat exchanger sequentially; the boiler hot water inlet end of the first heat exchanger is provided with a first flow rate monitor and a first temperature sensor; and the boiler hot water outlet end of the second heat exchanger is provided with a second flow rate monitor and a second temperature sensor. The device is simple in structure. With the positive balance boiler efficiency detection method adopted, boiler efficiency can be quickly calculated.