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7324results about How to "Avoid safety accidents" patented technology

Dressing safety detection method for worker on working site of electric power facility

The invention discloses a dressing safety detection method for a worker on a working site of an electric power facility. An SVM (support vector machine) classifier is trained based on HOG (histogram of oriented gradients) characteristics to identify the worker on the working site of the electric power facility and judge whether the worker is neatly dressed or not based on a worker identification result. The method comprises the following steps of detecting a worker target appearing on the working site of the electric power facility by training a HOG-characteristic-based classifier, and judging whether dressing and equipment of the worker target meet safety requirements on the working site or not based on the identified worker target, mainly comprising safety items such as whether a helmet is worn or not, whether safety clothes are completely worn (without exposed skin) or not and whether the worker on a pole transformer correctly wears a safety belt or not. According to the method, the dressing of the worker can be detected in advance before the worker enters the working site, and an additional worker for supervision is not required to be deployed; in addition, if the dressing of the worker is inconsistent with norms, the worker is early-warned and prompted, so that safety accidents caused by nonstandard dressing are avoided, and potential safety hazards are eliminated.
Owner:STATE GRID CORP OF CHINA +6

Atomizer for electronic smoking set

InactiveCN101986906AThorough atomizationAdd thermal safety deviceTobacco devicesGlass fiberEngineering
The invention discloses an atomizer for an electronic smoking set, which comprises an atomizer, wherein an oil suction device, a gasification device and a power supply device are arranged on the atomizer, through holes are arranged on a cover body and a pipe body of the oil suction device, glass fiber beams are arranged in the pipe body, the gasification device comprises a pipe type ceramic seat, a sealing cover for separating an inner cavity is arranged in the ceramic seat, through holes are arranged on the sealing cover, a heating chamber is formed between one side of the sealing cover and the cover body of the oil suction device, the glass fiber beams extending out of the cover body are accommodated in the heating chamber, heating wires are wound and arranged on the glass fiber beams at the place, a protecting device is arranged on the other side of the sealing cover positioned at outlets of the through holes, one end of the protecting device is connected with the heating wires, and the other end is connected with the power supply device. The traditional mode from nickel screen oil suction to glass fiber wire heating is changed, and the direct oil suction by the glass fiber wires is adopted, so that the atomization is more thorough. A temperature protecting device is added, when the temperature of the atomizer per se reaches 85 DEG C, a circuit can be automatically shut off, thus various safety accidents caused by high temperature can be prevented.
Owner:日本JBS株式会社

Hot-air drying machine capable of utilizing waste heat and achieving penetrating countercurrent fluidization

The invention discloses a hot-air drying machine capable of utilizing waste heat and achieving penetrating countercurrent fluidization. The upper portion of a drying tower is connected with an induced draft fan, and the induced draft fan is connected with a cyclone dust removing waste heat efficient recoverer formed by a tube-type heat exchanger and a cyclone dust collector in an overlapped manner in the tangent direction and then is emptied; the air inlet end of the shell side of the tube-type heat exchanger is communicated with the atmosphere, and the air outlet end of the shell side of the tube-type heat exchanger is connected with the lower portion of the drying tower through an air blower and a steam finned heater; and an impeller of the induced draft fan is of a structure that blades are in a hollow and wedged shape, and the contour line of the appearance of the induced draft fan is an involute. According to the hot-air drying machine capable of utilizing the waste heat and achieving the penetrating countercurrent fluidization, creative integration is conducted on waste heat utilization and dust removal, the cyclone dust removing waste heat efficient recoverer is designed out, the equipment input is reduced, and the work efficiency is improved; and due to the fact that sieve mesh cone covers, sieve mesh cone discs, discharging tubes, a stretching vibration transmission shaft and conical plugs are arranged, penetrating, countercurrent, boiling and fluidization drying of materials are exquisitely and perfectly achieved, more energy is saved, the drying quality is higher, the power consumption of the induced draft fan is lower, and the application prospect is wider.
Owner:常州新舜干燥工程有限公司

Method for second mining mining-stopping line coal column in super thick coal layer

The invention discloses a method for second mining a mining-stopping line coal column in a super thick coal layer. The method comprises the following steps that (1), positions of a coal column second mining working surface transporting gate trough and a rail gate trough are stimulated; (2) comprehensive probing is conducted on an original working surface goaf area where the super thick coal layer mining-stopping line coal column is located, and potential safety hazard is removed; (3) a roadway in the propelling direction of the coal column second mining working surface is dug at the upper part of the super thick coal layer, and the roadway is filled; (4) a coal column second mining working surface mining returning roadway and a affiliated oblique roadway are dug, so that the coal column second mining working surface mining returning roadway and the affiliated oblique roadway form a completed producing system, and the coal column second mining working surface is arranged; (5) a bottom plate of the roadway is drilled from top to bottom for using as a filled pipeline; (6) filling paste is prepared, the filling paste is evenly injected into one side, close to the original working surface goaf area, of the transporting gate trough along the filled pipeline; and (7) comprehensive mining is conducted on the coal column second mining working surface. According to the method for second mining the mining-stopping line coal column in the super thick coal layer, the compressed coal amount is reduced, waste of coal resources is avoided, the economic benefits of enterprises are improved, and the service life of mines and mining areas is prolonged.
Owner:TAIYUAN UNIV OF TECH

Compressed air system and intelligent pipe network leakage detecting method for same

The invention relates to technology of fault diagnosis, and aims to provide a compressed air system and an intelligent pipe network leakage detecting method for the same. The intelligent pipe network leakage detecting method includes that signals of the pressure, the temperature and the flow of compressed air are acquired by a sensor mounted on a terminal delivery pipe network, and are transmitted to a low-pass filter circuit, received signals are coarsely filtered and are transmitted back to an upper computer by an A/D (analog/digital) conversion circuit via a lower computer, the upper computer obtains change relation of flow parameters along with time and the length of a pipeline according to actually measured data of a starting point and actually measured data of a finish point, and then a pipeline leakage detection function is realized by means of comparing theoretic output with actual output. The intelligent pipe network leakage detecting method adopting detection technology is high in leakage detection accuracy which is higher than 95 degrees, false alarm rate is lower than 3%, detection time is shorter than 55 seconds, sensitivity is high, and leakage quantity higher than 1.5% of delivery quantity of the pipeline can be detected. In addition, when the intelligent pipe network leakage detecting method is used for positioning a leakage point, precision is high, positioning precision error is lower than 1% of the total length of the pipeline, shutdown of a factory is avoided by means of online detection, and labor intensity of manual detection is reduced by means of online detection.
Owner:HANGZHOU ZETA TECH

Omnidirectional computer vision-based safe and energy-saving control device for pedestrian automatic door

The invention discloses an omnidirectional computer vision-based safe and energy-saving control device for a pedestrian automatic door. The control device comprises an omnidirectional vision sensor (ODVS) without dead corners, a microprocessor, a controller, a voice player and an automatic door, wherein the omnidirectional vision sensor is used for acquiring the video information of a full view around the automatic door and is provided with a network interface; the microprocessor is used for detecting the status of the automatic door and the behaviors of pedestrians; the controller is used for controlling the automatic door to be opened or closed or rotated; the voice player is used for performing a safety prompt; the automatic door is used for the pedestrians at the opening position of a building to pass; the ODVS is connected with the microprocessor through the network; the microprocessor is connected with the controller; the controller is used for controlling the action of an automatic door motor; the voice player is connected with the microprocessor through a voice interface; and the ODVS is arranged in the middle of the top part of the automatic door. The omnidirectional computer vision-based safe and energy-saving control device for the pedestrian automatic door automatically controls the automatic door to be opened through analyzing the behaviors of the pedestrians according to the behavioral intentions of the pedestrians. According to the behaviors of the pedestrians and the status of the automatic door, the safety accident that the pedestrians are rolled by the automatic door is avoided, and the goal that the safety control, the energy saving property control and the comfort control of the automatic door are highly fused is achieved.
Owner:ZHEJIANG UNIV OF TECH

Mine emergency communication system

The invention relates to a mine communication system, in particular to an emergency communication support system of coal mines. The emergency communication support system comprises an integrated command rescue call center server, an IP (Internet Protocol) telephone switchboard and an voice gateway, which are interactively connected through Ethernet, wherein the voice gateway is simultaneously connected to a dispatching switchboard, an integrated IP voice access gateway for mine is adopted as the voice gateway, a 32-bit embedded microprocessor is adopted for the voice access gateway, a protocol conversion address of the microprocessor is connected with a system interface module, a serial port of the microprocessor is connected with a field bus protocol conversion module, the field bus protocol conversion module is connected with an underground dispatching amplified phone, an MAC (Media Access Control) address of the microprocessor is connected with a network module, and the microprocessor is connected with an Ethernet switchboard through the network module. The microprocessor is provided with a corresponding data interface for connecting an optical fiber transmission module, the microprocessor is accessed to an underground industrial optical fiber ring net through the optical fiber transmission module, and the underground loud-speaking phone is accessed to the underground industrial optical fiber ring net through a converter. According to the mine communication system disclosed by the invention, a difficult problem of the speed bottleneck in the wide-band network underground communication of a mine area is solved, and a way is paved for networking and informatizing of a mine monitoring system.
Owner:ZHENGZHOU SAIJIN ELECTRIC

Intelligent monitoring and early warning method for elevator brake

PendingCN107814288AImprove the level of safety supervision and managementImprove the level of safe useBrake typesElevatorsMachinePredictive maintenance
The invention discloses an intelligent monitoring and early warning method for an elevator brake. The method comprises the following steps of 1, a hardware structure of an elevator brake intelligent monitoring and early warning system is built in an elevator machine room; 2, small sample monitoring data are collected, feature vectors of signals are decomposed, reconstructed and extracted through awavelet packet, and a health mode library is built; 3, the running state of the elevator brake is monitored in real time, and early warning is carried out on faults possibly occurring through an SVMclustering analysis algorithm; and 4, according to a fault prediction result, maintenance personnel of an elevator are guided to adjust and optimize the maintenance plan, predictive maintenance is carried out, the faults of the brake are eliminated in a sprouting state, and accidents are avoided. According to the intelligent monitoring and early warning method, key parameters like an elevator brake gap, the abrasion amount of a brake shoe, a brake distance, a brake coil voltage, a traction machine working current, brake temperature, noise are monitored in real time through a non-contact type measuring method, data mining and analysis are carried out on the large amount of monitoring data, so that fault hidden danger of the elevator brake is predicted in time, and safe operation of the elevator is guaranteed.
Owner:南京市特种设备安全监督检验研究院

Model inverse dynamic algorithm for extreme power of power battery pack

ActiveCN104298793ASolve the problem that the valuation is affected by the accuracy of the SOCReduce estimation errorSpecial data processing applicationsSystems designTerminal voltage
The invention discloses a model inverse dynamic algorithm for the extreme power of a power battery pack, and aims to avoid the influence of the state of charge (SOC) accuracy of a battery on an extreme power estimated value due to calculation of the electrodynamic potential of the battery through a mathematical model. The model inverse dynamic algorithm comprises the following steps: establishing a polarization voltage model of a single battery and a terminal voltage model of the single battery by adopting a Thevenin equivalent circuit; computing the direct-current resistance R, polarization parameter Rp and tau of the battery according to an HPPC (Hybrid Pulse Power Characterization) experiment, and establishing a corresponding relation through the SOC and a temperature; computing current EMF(t) by using a current sampled voltage value U(t) and current I(t); computing a polarization voltage Up(t+dt) after pulse time according to Up(t); calculating extreme current according to EMF(t) and Up(t+dt); comparing the extreme current with a system design required value Imax, and selecting lower current for calculating a voltage value U(t+dt) after the pulse time; and computing extreme power and charging extreme power.
Owner:WANXIANG 123 CO LTD

Stepless regulation constant tension device for hydraulic winch

ActiveCN102153027AAvoid safety accidentsMaintain system oil pressureWinding mechanismsFuel tankSafety valve
The invention discloses a stepless regulation constant tension device for a hydraulic winch, consisting of a power pump set, a reversing valve, a hydraulic motor, a winch, a one-way valve, a balance valve and a motor safety valve, wherein the power pump set is connected with an oil inlet of the reversing valve; a first oil exchange port of the reversing valve is connected with an oil return port of the balance valve; an oil inlet of the balance valve is connected with a rope folding side oil port of the hydraulic motor; a rope release side oil port of the hydraulic motor is connected with a second oil reversing port of the reversing valve; an oil outlet of the reversing valve is connected with an oil tank; a control port of the balance valve is connected with an oil path between the rope release side oil port of the hydraulic motor and the reversing valve; the one-way valve is connected between the oil inlet and the oil return port of the balance valve in parallel; the motor safety valve is connected between the rope folding side oil port and the rope release side oil port of the hydraulic motor in parallel; and the winch is connected with the hydraulic motor. The device achieves the function of keeping the tension of a steel wire rope constant when the hydraulic winch is positioned under various work conditions and can be used for carrying out remote on-line adjustment on theoutput capacity of the hydraulic winch. The stepless regulation constant tension device has the advantages of simple structure, low cost, convenience for use and high safety.
Owner:WUHAN MARINE MACHINERY PLANT

Method for installing abnormal-shape curve steel box girder

The invention discloses a method for installing an abnormal-shape curve steel box girder, belonging to the technical field of a longspan bridge. The method for installing the abnormal-shape curve steel box girder comprises the following steps of: 1. manufacturing each section of the steel box girder, pre-assembling, and detecting the lateral welding contraction amount; 2. erecting a temporary bracket, arranging a safety protection facility and a working platform on the temporary bracket, and setting a precamber of the top support of the temporary bracket; 3. measuring and positioning on a pier, hoisting the steel box girder above the working platform, controlling hoisting in position, and integrally measuring and regulating the installed steel box girder; 4. controlling the welding deformation of the steel box girder; and 5. regulating the local line of the steel box girder. The method for installing the abnormal-shape curve steel box girder, which is disclosed by the invention, is convenient to operate, is easy to implement, has the advantages of high construction efficiency, low cost and strong maneuverability, and can be suitable for installing the abnormal-shape curve steel box girder and is easy to popularize; and the installation and the line shape of the steel box girder can be better controlled, and the construction quality is guaranteed.
Owner:CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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