83results about How to "Threat to security" patented technology

The invention relates to a Rogowski current sensor, which comprises an outer shielding structure, an annular magnetic medium framework, and a first coil and a second coil independently wound on the annular magnetic medium framework respectively. The first coil has more number of turns than the second coil; the first coil and the second coil are respectively connected in parallel with a first integral resistor and a second integral resistor with corresponding resistance; the first integral resistor and the second integral resistor are provided with a corresponding signal-measuring output end respectively; and the second integral resistor is connected in parallel with a transient voltage suppression diode. In a coil structure, by winding different turns of coils on the annular magnetic medium framework, the sensor measures a current signal in a wider amplitude range; and due to the mode that the second integral resistor is connected in parallel with the transient voltage suppression (TVS) diode, the export voltage at two ends of the second integral resistor is limited when heavy current passes through the coil, and the reliability of the sensor is improved.

The invention discloses a solar street lamp for traffic management support. The solar street lamp comprises a lamp holder, a lamp pole and a solar panel support plate, wherein a revolving shaft is arranged on the top of the lamp pole, and is rotatably connected with the solar panel support plate through the revolving shaft; an illumination sensor is arranged at the lower end of the solar panel support plate; an angle adjusting mechanism is arranged on the upper surface of a support platform in a sliding way; the angle adjusting mechanism comprises a motor seat, an adjusting motor, a gear disk, a rack, a guide wheel, a guide seat, a support rod and a carrier rod; a vehicle stopping mechanism is arranged on the side wall of the lamp holder; the vehicle stopping mechanism consists of a slope, a belt, a runner, an energy absorption pad, an anti-collision plate and a mounting groove. In the solar street lamp, sunlight is sensed by the illumination sensor, and the controller is used for controlling the adjusting motor to rotate in order to adjust the illumination angle of a solar panel; the vehicle stopping mechanism can separate front wheels of a vehicle from the ground, so that forward moving power is lost, the vehicle is stopped rapidly, and a vehicle in accident is prevented from threatening the safety of other pedestrians and vehicles.

The invention relates to an energy-saving system for fire disaster rescue and daily use of a high rise elevator. The system comprises a remote monitoring platform, a monitoring terminal and a mobile communication terminal; the monitoring terminal comprises a miniature unmanned aerial vehicle and network video cameras; the miniature unmanned aerial vehicle is provided with an airborne camera, flies and cruises in each floor of a high-rise building, carries out video surveillance, and transmits signals to the remote monitoring platform; the network video cameras are arranged on various sites of the high-rise building, carries out video surveillance, and transmits signals to the remote monitoring platform; and the remote monitoring platform is used for receiving the signals, sends commands to an elevator control cabinet after analyzing and processing the signals and controls an elevator car to execute the related commands. According to the system, the defect of elevator rescue in the prior art is overcome, and the elevator can be safely and efficiently used as a main tool for rescue in a fire disaster so that escape personnel can be rescued timely and effectively. During daily use, external energy is used for supplying power to the elevator and monitoring the daily operation of the elevator, and the operation efficiency is improved.

The invention discloses a grinder grinding wheel protection cover comprising housings and clamping devices. Each housing comprises an outer shell and an inner shell, the outer shell is fan-shaped,an arc edge at the position of the central angle of the outer shell is provided with an arc flange protruding to a cavity, the inner shell is fan-shaped and clamped in the outer shell, and an arc edge at the position of the central angle of the inner shell is in clearance fit with the arc flange of the shell. Each clamping device is mounted on the outer wall of the corresponding outer shell and located at the straight edge of the outer shell, and a plurality of clamping slots in arc distribution are arranged in the outer wall of each inner shell and matched with the corresponding clamping device. The degree that the inner shells retract into or extend out of the outer shells can be adjusted, and the positions of the inner shells relative to the outer shells are fixed through the clamping devices. The protective cover can be fixed on a rack of a grinder through a conventional connecting device; through the protective cover, when a grinding wheel cracks in operation, grinding wheel fragments can be effectively covered, and safety of operators is guaranteed.

The invention relates to a condensing device for a dish-washing machine and the dish-washing machine provided with the condensing device. The condensing device comprises an inner container, a condenser and draught fans. One end of the condenser communicates with the inner container through an air inlet, and the other end of the condenser is connected with the draught fans. An air supply opening communicating with the inner container is formed in one side plate of the condenser. Airflow is conveyed into the condenser and supplied into the inner container through the air supply opening so that water vapor can enter the condenser through the air inlet to form inner airflow circulation, meanwhile, cooling airflow is conveyed to the outer surface of the condenser to form outer airflow circulation, and power is provided for inner airflow circulation and outer airflow circulation through the two draught fans correspondingly or through one draught fan at the same time. The condensing device has inner airflow circulation and outer airflow circulation at the same time, the flowing speed of airflow on the outer surfaces of the side plates of the condenser can be increased, the surface temperature of the condenser can be reduced, fast condensation of the water vapor in the condenser can be facilitated, and the condensation efficiency can be greatly improved.

The invention relates to a gob-side entry retaining method for putting top waste rock down to achieve roadway side packing. The method is mainly applied to the gob-side entry retaining technical field. In the advancing process of a working face, a top coal caving support is directly adopted to put waste rack above a goaf down, the waste rock is transported to the end of the working face and is simply crushed, transferred and transported back, the processed waste rock is stacked, the goaf on one side of a retained roadway is filled with the processed waste rock to form a waste rock wall serving as a roadway side support, and a rear top beam is arranged at the position, needing roadway side packing, of hydraulic supports of the working face, so that a waste rock back transportation device is conveniently installed and the waste rock is stacked to the enough height. Meanwhile, when the waste rock is stacked or after the waste rock is stacked, cemented filling materials are sprayed to the stacking position of the waste rock to achieve airtightness and reinforcement along the roadway side support of the gob-side entry retaining. The method is of great importance in ensuring gob-side entry retaining stability of the thick seam working face, especially the fully mechanized caving face, improving the resource recovery rate and simplifying the roadway side support process.

The invention discloses a steel bridge deck protecting device and a production method thereof. The protecting device comprises a bituminous concrete surface layer arranged above a deck slab of a steel bridge deck, and at least one bonding transitional layer arranged between the deck slab and the bituminous concrete surface layer, wherein the bonding transitional layer comprises a graded gravel layer and a bonding agent layer formed by compounding epoxy resin and polyurethane; and the graded gravel layer is arranged above the bonding agent layer and below the bituminous concrete surface layer. The protecting device of the invention integrally bonds the bituminous concrete surface layer and the deck slab so as to enhance the deck slab deformation following performance of the bituminous concrete surface layer, enhancing inter-layer bonding durability and reducing damages caused by delaminating and slippage between the bituminous concrete surface layer and the deck slab.

The invention provides a CPU power-on time sequence control method, device and system. The method includes the steps that S0, a signal output device is pre-arranged; S1, after an external server is switched on, a CPU power-off instruction is sent to the signal output device; S2, a first control signal is sent to an external server CPU by utilizing the signal output device according to the received CPU power-off instruction, so that the CPU is not powered on; S3, whether a basic input / output system program of the external server is tampered or not is detected; S4, when the basic input / output system program of the external server is not tampered, the CPU power-off instruction is sent to the signal output device; S5, a second control signal is sent to the external server CPU by utilizing the signal output device according to the received CPU power-off instruction, so that the CPU is powered on. By the adoption of the technical scheme, the security of the server can be improved.

The invention discloses a high-efficiency and safe lawn mower for municipal use, which includes a mowing device; the mowing device is provided with a mowing wheel, and the mowing wheel is connected with a second drive motor through a second drive shaft; the mowing device The left side is fixedly connected with a garbage collection device. The invention is equipped with a garbage guide plate and rotating rake teeth to efficiently clean and collect garbage in the area to be mowed, avoiding solid garbage from splashing when it comes into contact with the high-speed rotating mowing wheel, threatening the safety of personnel, and avoiding damage to the mower. Grass wheel prolongs the service life of the mowing wheel; the invention is provided with a liftable mowing wheel, which can be adjusted according to the needs of different depths of turf, and has good adaptability; the invention is provided with a grass clipping guide plate and a spiral The blade extruding device collects grass clippings efficiently, expands the capacity of the collection box, and improves operating efficiency.

The invention relates to an automatic processing and recovering robot for waste aluminium profiles produced during aluminium alloy machining. The robot comprises a bottom plate; and a limiting deviceand a smashing device are sequentially mounted on the bottom plate from front to back. By the aid of the robot, the problems that the processing and machining quantity of the waste aluminium profilesis required to be controlled manually during existing manual machining and processing of the waste aluminium profiles, time consumed for manual control on processing and machining is long, the labor force is wasted, the waste aluminium profiles are required to be machined by the aid of existing hammering tools manually, no corresponding fixing measures are provided for hammering machining of the waste aluminium profiles, the waste aluminium profiles are splashed and hurt workers easily during hammering, potential safety hazards exist, the waste aluminium profiles in different lengths are required to be manually cut into the unified sizes, repeated smashing machining is required for manual smashing of the waste aluminium profiles by the aid of existing equipment, the stability is poor, thelabor intensity is high and the working efficiency is low during manual machining and processing of the waste aluminium profiles and the like can be solved, and the function of mechanical processing of the waste aluminium profiles can be realized.

The invention relates to an automatic treatment and recycling machine for a waste aluminum profile generated in wrought aluminum alloy processing. The automatic treatment and recycling machine comprises a bottom plate, wherein a cleaning conveying device, an amount limiting device and a flattening device are mounted in sequence from front to back on the bottom plate. By adopting the automatic treatment and recycling machine, the difficulties that the waste aluminum profile is not comprehensively cleaned manually while the waste aluminum profile is treated manually, waste aluminum profile processing treatment is affected by residual dirt, operators can be hurt by splashed chippings when the waste aluminum profile is beaten by using a beating tool, potential safety hazard can be caused, waste aluminum profiles of different lengths need to cut into a unified size manually, the waste aluminum profiles need to be beaten and flattened for multiple times manually, conventional large-size waste aluminum profile recycling equipment is high in cost, great energy consumption is needed when a small batch of waste aluminum profiles are treated, resource waste is caused, manual waste aluminum profile processing is poor in stability, large in working intensity and low in working efficiency, and the like, are solved, and an automatic waste aluminum profile treatment function is achieved.

The embodiment of the invention discloses a multimedia file encryption method and device. The method and device are used for improving confidentiality of multimedia files. The method includes the steps that a secret album is established according to a request of a user and used for storing encrypted multimedia files, multimedia files selected by the user are led to the secret album, names of the multimedia files are encrypted in a storage path corresponding to the secret album so that encrypted files corresponding to the names of the multimedia files can be generated, and the multimedia files are deleted from a system database.

The invention relates to a waterproofing system, in particular to a bottom plate waterproofing system of a foundation of a building. The bottom plate waterproofing system of the foundation of the building comprises drainage pipelines (1) and a water collecting well (3). The drainage pipelines (1) are arranged between a concrete layer (4) of the foundation of the building and a ground (2), the water collecting well (3) is arranged on a side of the concrete layer (4) and a side of a grouting layer (5) of the foundation of the building, and the drainage pipelines (1) are communicated with the water collecting well (3). The bottom plate waterproofing system has the advantages that the stability of the building and the stability of the underground foundation can be guaranteed, an excellent waterproofing effect can be realized, underground spaces can be effectively utilized, accordingly, the service efficiency of the building can be improved, and the future maintenance and management costs can be reduced.

The invention discloses a kindergarten pick-up management method, which comprises the following steps that A, using a robot to record a face of an infant and a corresponding face of a designated pick-up person in advance and store the face of the child and the face of the designated pick-up person in a cloud server; B, collecting the images of the infant and the pick-up person on the pick-up site;C, using a cloud server to carry out face recognition on the image, and extracting the on-site infant face features and on-site pick-up person face features; D, matching the on-site infant face features with a pre-input infant face, calling an appointed pick-up person face corresponding to the matched infant face. According to the invention, the pick-up management is carried out by using a face recognition technology, and the IC card handling is not needed. When entrusting other people to pick up and send, the user only needs to feed back the agreement when receiving the information for inquiring whether to agree to pick up and send, so that the inconvenience of using an IC card picking-up and sending system is avoided, meanwhile, the possibility that the IC card is picked up, stolen andcopied by the lawbreakers to falsify children, threaten the safety of the children and cause serious consequences is avoided, and the safety is higher.

The invention relates to an intelligent encryption method of logistics information. A customer-used mobile terminal acquires parameters of facial preset positions of a legitimate user thereof to obtain facial recognition parameters characterizing an identity of the legitimate user; other parameters of facial infrared identification parameters characterizing the identity of the legitimate user areobtained through correspondingly collecting infrared data of facial preset position areas, and an identity validation index of whether an identity of an operator is legitimate is correctly recognizedto accurately guarantee identity security of the legitimate user of the customer-used mobile terminal on the basis of the multiple identity recognition parameters; and randomly selected facial imagesof the legitimate user are used as carrier images for logistics information encryption, and all the carrier images are processed on the basis of encryption keys obtained by the facial parameters of the legitimate user. An effect that the customer-used mobile terminal uses all the selected carrier images and all the obtained encryption keys in encryption processing for a logistics waybill number iseffectively guaranteed, utilization rates of the carrier images and the encryption keys in encryption are increased, and security of the logistics waybill number input by the customer is guaranteed.

The invention discloses a rock burst prevention rescue escape trolley based on a drilling and blasting method and a using method, and relates to the field of underground engineering. The rock burst prevention rescue escape trolley comprises a foundation framework, a rescue protection framework and an escape protection framework; the foundation framework comprises a truss structure formed by welding I-shaped steel, an upper straight ladder and a lower straight ladder; the rescue protection framework comprises hydraulic rotating rods, protection steel plates and a rescue capsule; the two sides of a first-layer working face and the two sides of a second-layer working face are connected with the protection steel plates through the hydraulic rotating rods correspondingly; the rescue capsule is located between the second-layer working face and a third-layer working face; a rescue hole is formed in the third-layer working face; the escape protection framework comprises an escape hanging ladder and an escape hole; the escape hole is formed in the second-layer working face and located in the rescue capsule; and during escape, the escape hanging ladder is hung at the escape hole. The rock burst prevention rescue escape trolley can resist damage generated when rock bursts of different grades happen, and safety protection and escape guarantees are provided for constructors at the first time when the rock bursts happen.

The invention discloses a preparation method of high-purity difluoroethanol, aiming at solving the problems that an azeotrope agent impurity is introduced in a process of preparing the difluoroethanol through an azeotropic distillation method and the purity of a product is low. The preparation method comprises the following steps: (1) conveying a mixture of difluoroethanol and water into a first packed distillation tower and separating, wherein a tower top fraction is a difluoroethanol / water azeotrope with relatively high difluoroethanol content and a tower kettle fraction is water; (2) conveying the tower top fraction of the first packed distillation tower into a second packed distillation tower and separating, wherein a tower top fraction is a difluoroethanol / water azeotrope with relatively low difluoroethanol content; circulating the tower top fraction to the first packed distillation tower, wherein a tower kettle fraction is difluoroethanol. The preparation method of the high-purity difluoroethanol, disclosed by the invention, is applicable to a difluoroethanol crude product which is obtained in a production process of the difluoroethanol through a difluoroethyl acetate and methanol ester separation exchange method or a 1-chloro-2,2-difluoroethane hydrolysis method.

The invention discloses a telescopic device for an electric bicycle pedal. The telescopic device comprises a left plate, wherein the upper surface of the left plate is provided with threaded grooves; a right plate is connected to the clamping groove of the left plate in a sleeving manner; a telescopic frame is arranged at the bottom of the inner cavity of the right plate; one side of the telescopic frame is connected with a right supporting rod connected with the inner wall of the right plate; the other side of the telescopic frame is connected with a left supporting rod; the tail end of the left supporting rod penetrates through another inner wall of the right plate and is connected with the inner wall of the left plate; the top of the inner cavity of the right plate is provided with a belt; the tail end of the belt is connected with a rotating shaft; one end of the rotating shaft penetrates through the left plate and extends out of the left plate to be connected with a rotating knob; and the end, close to the rotating knob, of the rotating shaft is provided with a clamping block positioned on the outer surface of the left plate. By virtue of the telescopic effect of the telescopic device, the right plate can slide out from the inner cavity of the left plate, and a sliding block on the right plate is clamped with the side face of the left plate, so that the condition that a rider will feel uncomfortable during riding, so that the riding becomes dangerous, and the safety of the rider is threatened is avoided.

The invention relates to the technical field of dwarf and close-planted pear tree pruning, in particular to a pruning device for dwarf and close-planted pear trees and an implementation method of the pruning device. A handle is rotated to drive a first rotating shaft to rotate, a pruning assembly is driven to move leftwards, the device is provided with a first motor and a second motor, and under cooperation of the first motor, a second rotating shaft, a smooth rod and a second sliding sleeve, a pruning mechanism can be roughly adjusted to rise to the pruning height position according to different pear tree pruning heights, a hydraulic rod is controlled to extend to accurately reach the pear tree pruning position, the effect of pruning pear tree branches is achieved, a recycling box is arranged to collect branches and leaves falling off during pruning, the situation that the branches and leaves fall off and threaten the safety of pruning workers is avoided, meanwhile, the situation that workers need to collect the branches and leaves again after pruning the pear trees is avoided, the labor burden of pruning workers is reduced, the working efficiency of pruning branches and leaves is improved, and meanwhile the stability of the device is improved through cooperation of sliding blocks and sliding rails and cooperation of rolling wheels and limiting grooves.

The invention relates to an autonomous control method suitable for solar wing position safety in Mars detection and belongs to the technical field of solar wing control in Mars detection. The method comprises the following steps that: S1, the safe position of a solar wing in an orbit control period can be determined, then the solar wing is biased towards the safe position; S2, the maximum durationrequired for biasing the solar wing to the safe position before orbit control is calculated, and serve as a time threshold of solar wing fault diagnosis; S3, whether the solar wing has a biasing fault or not is judged according to the time threshold of the solar wing fault diagnosis, orbit control is cancelled if the biasing fault occurs, and closed-loop tracking sun alignment is performed on thesolar wing, otherwise, after orbit control is normally executed, the solar wing adopts closed-loop tracking to face the sun. With the method adopted, the safety and reliability of a solar wing systemin a whole Mars detection process are improved.

The invention provides a data encryption and decryption method, a data uploading end, a data receiving end and a system, the method comprises an encryption method and a decryption method, the encryption method comprises the following steps: acquiring a data plaintext and an AES key, and encrypting the data plaintext in combination with the AES key to obtain a data ciphertext; and encoding the data ciphertext to obtain a character string ciphertext, and writing the character string ciphertext into a block chain database. The decryption method comprises the following steps: acquiring a data ciphertext, a decryption password and a preset password, and authenticating the decryption password and the preset password; when the authentication is passed, outputting a data plaintext; and when the authentication is not passed, outputting the data ciphertext. According to the data encryption and decryption method, the data uploading end, the data receiving end and the system, different bloom filters can be set for verification for different groups of data through a password authentication mode without key distribution, differential verification of the data is realized, data security is ensured, and the problems are solved that in the prior art, an encryption algorithm needs to manage a key, and potential safety hazards exist in data security.

The invention provides a data search method in a big data environment. The method comprises the steps that a client sends a search request to a big data center; the big data center performs security authentication on the received search request; if the authentication is passed, the search request is subjected to type judgment and then is further input to a search recording apparatus; if the authentication is not passed, the client sends a search response containing refusal information; and the big data center performs log recording on the current search and updates the search recording apparatus. According to the method, a quick search can be carried out by utilizing records, so that the search time is shortened, the situation that the working load and the energy consumption of the big data center are increased because same search requests unnecessarily occupy resources of the big data center is reduced, the data scheduling efficiency and speed of the big data center are improved and increased, the security of the whole big data center is prevented from being threatened, and the accuracy and comprehensiveness are enhanced.

The present invention provides a direct current voltage divider and a capacitance and dielectric loss detection method thereof. The direct current voltage divider comprises an insulating bush, and a high voltage arm and a low voltage arm which are installed in the insulating bush. The top of the insulating bush is coaxially provided with a metal conductive barrel, the bottom end of the insulating bush is coaxially provided with a metal substrate, the high voltage end of the high voltage arm is electrically connected with the metal conductive barrel, and the metal substrate is grounded; the metal conductive barrel is electrically connected with a high-voltage polar line through a switch, and the lead connected with the low-voltage end of the high-voltage arm and the lead connected with the high-voltage end of the low-voltage arm are connected with each other through a short circuit jumper wire at the exterior of the insulating bush. The direct current voltage divider is good in heat radiation performance and good in reliability , can perform pressurization test of the high-voltage arm and the low-voltage arm, detect the capacitance and dielectric loss of the high-voltage arm and the low-voltage arm of the direct current voltage divider, and is simple in operation and high in safety.

The invention provides an arc light detection method. The method comprises the following steps: S1, an arc light sensor is installed in a to-be-monitored switch cabinet small chamber, wherein the arclight sensor is used for receiving an arc light signal, and a uniform secondary illuminant is formed; S2, an optical signal emitted by the secondary illuminant is transmitted to a protection device, photoelectric conversion is completed by the protection device, and the converted original electric signal is acquired at a fixed sampling frequency; and S3, the protection device judges whether a fault occurs or not through arc light signal matching retrieval and in combination with the acquired electric signal according to a power frequency variable quantity current criterion, and if the fault occurs, the protection device gives an alarm or trips. According to the arc light detection method provided by the invention, strong current and weak current can be effectively isolated, and arc light signals can be monitored in an omnibearing, real-time and safe manner. The invention further provides an arc light detection device applying the arc light detection method.

The invention provides a bottle cap of a glass medicine bottle which is used for holding an injection and can avoid piercing a rubber plug by using a sharp needle head to cause plug scraps to fall. The bottom cap comprises a mother cap, a children cap and a sealing ring which all have a thread structure, wherein the manufacturing, injecting and demolding procedures of dies of the mother cap, the children cap and the sealing ring are simpler as comparison with the thread structure. When the mother cap is assembled with the children cap, only the children cap is pressed on a medicine outlet nozzle of the mother cap so that the glass medicine bottle is closed. The assembling process of direct pressing is simpler than the thread assembling process needing setting a rotating mechanism. The bottle cap can be directly used without special tools or wiping and sterilizing during the starting.

The invention discloses an implanted electronic device with a sound prompting function and a medical system. The implanted electronic device comprises a microprocessor system module and a sounding warning module, wherein the sounding warning module is connected with the microprocessor system module, and when a system has a fault or is abnormal, the sounding warning module can send out audible sound. Compared with the prior art, the implanted electronic device and the medical system have the advantages that patients can be notified in time through the audible sound that the implanted medical system has the fault or is abnormal, the patients can take measures in time or notify doctors to take measures for eliminating the fault or the abnormity after hearing the sound, the fault or the abnormity is eliminated as soon as possible when being found, and the harm to the health of the patients caused by the occurrence of more serious accidents is avoided.

The invention discloses a separation method of a difluoroethanol-water azeotrope, and mainly solves the problems of introduction of a third impurity and low separation purity in the azeotropic distillation. The method adopts a rectification tower and a pervaporation device, and comprises the following steps: (1) a difluoroethanol-water mixture enters a rectification tower to be separated, wherein the overhead fraction is a difluoroethanol-water lowest azeotrope, and the tower bottom fraction is the difluoroethanol product; and (2) the tower bottom fraction of the rectification tower enters the pervaporation device to be separated, water at the liquid side previously penetrates through the membrane to enter the membrane, and the retentate is circulated to the rectification tower after being condensed, wherein the infiltrate is pure water. The method does not introduce the third substance, and has the advantage of high product purity.