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51results about How to "Work in time" patented technology

Mimicry defense system based on certificate identity authentication and certificate issuing method

The invention discloses a mimicry defense system based on certificate identity authentication and a certificate issuing method. The system is applied to the technical field of network security, and comprises bottom-layer equipment, an intermediate controller and a certificate issuing center, the intermediate controller and the certificate issuing center are respectively provided with a unique certificate, a public key and a corresponding private key of the certificate are stored in the certificate, and the corresponding private key is stored privately by each piece of equipment and is not disclosed to the outside; according to the method, a device sends a certificate request file to an intermediate controller, the intermediate controller applies for a certificate to a certificate issuing center after verifying the identity, the certificate issuing center issues the certificate and sends the certificate to an underlying device through the intermediate controller, and the underlying device installs the certificate. The intermediate controller of the mimicry structure can effectively resist attacks of attackers, meanwhile, when the judgment module works, if the output results of the heterogeneous executors are inconsistent, whether the heterogeneous executors are attacked can be judged in time, and the system can be maintained in time.
Owner:NANJING REDMATRIX NETWORK SECURITY TECH R & D INST

Silicone oil fan clutch with controllable separation speed

The invention relates to a silicone oil fan clutch with controllable separation speed. The silicone oil fan clutch with controllable separation speed comprises a sealed bearing, a shell arranged on an outer ring of the sealed bearing and a driving shaft arranged on the inner ring of the sealed bearing. A driving disc is arranged on the driving shaft, the driving disk is arranged in the shell, and an oil storage cavity is formed in the shell. An oil-guiding groove is formed in an outer cylindrical surface of the driving disc, and a raised rib strip is also arranged on the outer cylindrical surface of the driving disc. The silicone oil fan clutch with controllable separation speed provided by the invention has the advantages that a raised rib strip is further arranged on the outer cylindrical surface of the driving disc, when the silicone oil fan clutch transforms from a meshed mode into a separated mode, the rib strip can guide a fraction of silicone oil into a clearance between the outer cylindrical surface of the driving disc and the shell from a clearance between the upper portion of the driving disc and the shell, an oil pressure zone with certain pressure is formed on one side of the rib strip, the additional transmission function is generated in this way, and the separation speed of the silicone oil fan clutch is improved.
Owner:XUELONG GRP

Medium-voltage power distribution network fault monitoring device

The invention discloses a medium-voltage power distribution network fault monitoring device. The medium-voltage power distribution network fault monitoring device comprises an information acquisition system and an information processing terminal, and also comprises an information processing terminal and/or a handheld terminal, wherein the information acquisition system comprises a zero sequence CT, a short circuit CT module, a zero sequence current monitoring module, a short circuit current monitoring module, a micro controller unit (MCU) and a first communication module. According to the medium-voltage power distribution network fault monitoring device, a zero sequence voltage transformer does not need to be connected in, a zero sequence current transformer is directly used for monitoring a single-phase grounding fault, zero sequence current can be calculated and processed by combining the information processing terminal, and a place where the fault occurs can be positioned. The device is low in cost, simple in implementation manner, accurate and convenient. Besides, power can be acquired directly from a power distribution cable without connecting another power supply unit, so that the device can operate stably and timely. The medium-voltage power distribution network fault monitoring device with the excellent performance can be widely applied to a medium-voltage power distribution network.
Owner:广州拓威讯科技发展有限公司

Flood breach plugging device for dam and plugging method thereof

The invention provides a flood breach plugging device for a dam and a plugging method thereof and relates to the field of building members, mechanism members and hydro science. The flood breach plugging device comprises stressed securing piles arranged above dams on two sides of a breach, a supporting rope and a throwing rope, two ends of which are fixed to the stressed securing piles, a tensionerfor tensioning the supporting rope and the throwing rope and a water baffle queue placed above the supporting rope and the throwing rope; the water baffles comprise a plurality of parallelly arrangedlight prefabricated water baffles which are connected in series by a serializer, and one ends of the bottoms of the light prefabricated water baffles are movably connected to the supporting rope while the other end of the bottom of the light water baffle queue is directly placed on the throwing rope. Meanwhile, the invention provides the plugging method of the flood breach plugging device for thedam. The device and method provided by the invention solve the problems that according to an existing plugging technology of the flood breach of the dam, the manpower and material costs are high, theplugging time is long, the labor intensity is great and the safety risk of rescue personnel is great.
Owner:耿飞

High-activity metal powder anti-oxidation drying device and method

The invention relates to the technical field of metal powder drying, and provides a high-activity metal powder anti-oxidation drying device and method. The drying device comprises a drying box, an inert gas supply component, an evacuation component and a liquid level monitoring component, wherein a heater, a material tray, a thermometer and a vacuum gage are arranged in the drying box; the inert gas supply component is used for filling inert gas into the drying box; the evacuation component is used for evacuating the drying box body; and the liquid level monitoring component is used for collecting absolute ethyl alcohol and monitoring the liquid level height change of the absolute ethyl alcohol. The inert gas supply component and the evacuation component are matched with each other, so that the situation that high-activity metal powder is oxidized due to residual oxygen can be avoided; the heater and the thermometer are used for realizing constant-temperature heating and shortening the drying time; and absolute ethyl alcohol can be collected and the liquid level can be monitored through the liquid level monitoring component, so that it is ensured that work can be stopped in time after absolute ethyl alcohol is completely evaporated, the drying time is shortened, the labor cost is reduced, and the drying efficiency is improved.
Owner:CENT SOUTH UNIV

Condensation sensor, condensation detection device prepared by using the condensation sensor, and detection method

The invention belongs to the technical field of sensors, and particularly relates to a condensation sensor, a condensation detection device prepared by using the condensation sensor, and a detection method. The condensation sensor comprises a detection electrode pair, wherein the detection electrode pair is composed of a first electrode set and a second electrode set, the first electrode set and the second electrode set comprise a plurality of parallel electrodes arranged in a comb tooth shape, the parallel electrodes in the first electrode set and the second electrode set are arranged in a staggered mode, the adjacent parallel electrodes are arranged at equal intervals, and the interval is smaller than 2 mm. The first electrode set is grounded, and the end part of the second electrode setis connected with a radio frequency transmitting circuit; two detection resistors which are connected in series are electrically connected between the first electrode set and the second electrode set, the middle point of the two detection resistors is used as an output point, and the detection circuit detects the voltage value of the output point and judges the condensation condition of the equipment according to the voltage value. The detection device prepared by using the condensation sensor has the advantages of high precision, a low false alarm rate and high reliability.
Owner:安徽帕维尔智能技术有限公司

Symmetrical track overhead line system detection device and method

The invention belongs to the technical field of track overhead line system detection, and discloses a symmetrical track overhead line system detection device and method. The detection device comprises a movable vehicle body used for moving on a track, a console and a detection unit are installed on the movable vehicle body, the detection unit comprises an infrared laser, an industrial personal computer and two cameras, and the console and the two cameras are respectively connected with the industrial personal computer; the two cameras form a binocular camera group and are symmetrically arranged on the two sides of the infrared laser; a noise removal module, a template matching module, an edge extraction module, a gravity center extraction module and a coordinate conversion module are arranged in the industrial personal computer. The mobile vehicle body is used as a carrier of the detection system, so that continuous detection can be realized; an image processing technology is utilized to calculate a guide height value and a pull-out value of the overhead line system, and the accuracy is at a pixel level and is much higher than that of manual detection; during operation, direct contact with the overhead line system is not needed, the field of view range is wide, the detection precision is high, and the detection efficiency is high.
Owner:CHANGAN UNIV

Auxiliary device used for water flow section measurement

The invention discloses an auxiliary device used for water flow section measurement, and relates to the technical field of equipment used for water flow section measurement. The auxiliary device used for water flow section measurement comprises a fixing table, wherein a supporting piece is rotatably installed on the edge of the lower end of the fixing table, an air guiding mechanism is arranged at the upper end of the supporting piece, a stabilizing mechanism is fixedly installed at the lower end of the supporting piece, the supporting piece comprises rotating blocks, fixing columns, locking blocks and movable supporting rods, the rotating blocks are rotatably installed on the edge of the lower end of the fixing table through the rotating columns, one corresponding fixing column is fixedly installed at two ends of the bottom of each rotating block, the locking blocks are fixedly installed at the lower ends of the fixing columns, and locking threaded rods are arranged at the right sides of the locking blocks. According to the auxiliary device used for water flow section measurement, the air guiding mechanism matches the stabilizing mechanism, wind power blown to a windward face is dispersed in windy weather, friction force between supporting feet and the ground is increased, and the situation that the supporting feet shake and sink under the action of the wind power, horizontal states of a tripod and equipment are damaged, and the measurement precision is affected is prevented.
Owner:卢圆章

Fireproof structure of building curtain wall

The invention discloses a fireproof structure of a building curtain wall, relates to the technical field of building engineering and building fire prevention, and solves the problems that an existing glass curtain wall is easy to break after being heated and cannot play a good fire insulation role, dust is easy to enter a water curtain nozzle after the water curtain nozzle is exposed outside for a long time, head collision and blockage are caused, and the service life of the water curtain nozzle is influenced due to collision. Comprising a curtain wall mounting piece; a group of glass curtain walls are arranged in front of and behind the inner side of the curtain wall mounting piece; the upper part of the curtain wall mounting piece is connected with a group of spray head cover plates through a hinge; and a group of pipeline sliding pieces are connected into the water curtain water supply pipeline in a sliding manner. The strength of the glass curtain wall can be improved, when the glass curtain wall is heated and broken, certain integrity is still kept, the spray head can be well protected, meanwhile, the spray head cover plate can be opened in time, an alarm signal is sent, the spray head cover plate can be automatically opened in a linkage mode when a water curtain system works, the structure is simple, and the practicability is high. And the use stability is higher.
Owner:姚宏揆

Method and device for measuring circuit detection of relay protection device

The invention discloses a relay protection device measurement loop detecting method and device and belongs to the technical field of power system relay protection. The method includes the following steps that: the multi-source wave recording file of a measurement loop, which is generated when an external fault occurs, is called; a asynchronous multi-source data correlation and time synchronizationare performed on the wave recording waveforms of the multi-source recording file; wave recording waveform data are judged according to a preset rule base, so that the abnormal type of the measurementloop can be determined; an alarm is given out according to the determined abnormal type; and if a new abnormal type appears, a new judgment rule is supplemented to the rule base, so that the rule base can be improved. With the method of the invention adopted, no additional equipment is required, and any additional test does not need to be carried out; by means of communication and expert systems,work can be carried out efficiently and timely without stop, so that the restriction of factors such as personal experience and energy are broken; continuous improvement is carried out in a long-termoperation process, and expansion can be realized; and fusion and analysis of existing multi-source data belong to the deep mining of application functions, and therefore, the intelligence of an operation and maintenance system can be improved.
Owner:EXTRA HIGH VOLTAGE POWER TRANSMISSION NANJING OF CHINA SOUTHERN POWER GRID

A Mimic Defense System Based on Certificate Identity Authentication and Certificate Issuing Method

The invention discloses a mimetic defense system based on certificate identity authentication and a certificate issuing method, which are applied in the technical field of network security. The system includes bottom equipment, an intermediate controller, and a certificate issuing center. There is a unique certificate, which stores its own public key, and the corresponding private key is kept privately by each device and is not disclosed to the outside world; in the method described above, the device sends a certificate request file to the intermediate controller, and the intermediate controller issues a certificate to the certificate after verifying its identity. The center applies for a certificate, and the certificate issuing center issues the certificate and sends it to the underlying device through the intermediate controller, and the underlying device installs the certificate. The intermediate controller adopting the mimetic structure of the present invention can effectively resist the attack of the attacker, and at the same time, if the output results of the heterogeneous executives are inconsistent when the judgment module is working, it can also judge in time whether the heterogeneous executives are attacked, and repair the system in time .
Owner:NANJING REDMATRIX NETWORK SECURITY TECH R & D INST

A dew condensation sensor and a dew condensation detection device and detection method prepared therefrom

The invention belongs to the technical field of sensors, and in particular relates to a dew condensation sensor and a dew condensation detection device and detection method prepared therefrom. The dew condensation sensor includes a detection electrode pair, the detection electrode pair is composed of a first electrode group and a second electrode group, the first electrode group and the second electrode group include a plurality of parallel electrodes arranged in a comb-like shape, the first electrode group and The parallel electrodes in the second electrode group are staggered, and the adjacent parallel electrodes are arranged at equal intervals, with a spacing of less than 2 mm; the first electrode group is grounded, and the end of the second electrode group is connected to a radio frequency transmitting circuit; the first electrode group Two detection resistors in series are electrically connected with the second electrode group, the middle point of the two detection resistors is used as an output point, the detection circuit detects the voltage value of the output point, and judges the equipment dew condensation according to the voltage value. The detection device prepared by using the dew condensation sensor has the advantages of high precision, low false alarm rate and high reliability.
Owner:安徽帕维尔智能技术有限公司

A silicon oil fan clutch with controllable separation speed

The invention relates to a silicone oil fan clutch with controllable separation speed. The silicone oil fan clutch with controllable separation speed comprises a sealed bearing, a shell arranged on an outer ring of the sealed bearing and a driving shaft arranged on the inner ring of the sealed bearing. A driving disc is arranged on the driving shaft, the driving disk is arranged in the shell, and an oil storage cavity is formed in the shell. An oil-guiding groove is formed in an outer cylindrical surface of the driving disc, and a raised rib strip is also arranged on the outer cylindrical surface of the driving disc. The silicone oil fan clutch with controllable separation speed provided by the invention has the advantages that a raised rib strip is further arranged on the outer cylindrical surface of the driving disc, when the silicone oil fan clutch transforms from a meshed mode into a separated mode, the rib strip can guide a fraction of silicone oil into a clearance between the outer cylindrical surface of the driving disc and the shell from a clearance between the upper portion of the driving disc and the shell, an oil pressure zone with certain pressure is formed on one side of the rib strip, the additional transmission function is generated in this way, and the separation speed of the silicone oil fan clutch is improved.
Owner:XUELONG GRP
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