15031results about How to "Avoid safety hazards" patented technology

The invention discloses a high-altitude drill positioning method of a building, which comprises a high-altitude marking device, a high-altitude drilling device and a high-altitude tightening device. The high-altitude drill positioning method comprises the following steps that when a plurality of fixing holes need to be drilled in the top surface of the building, the length of an adjustment rod of the high-altitude marking device is adjusted to be equal to the distance between any two fixing holes; a support rod of the high-altitude marking device is adjusted, so that the altitude from the top end of a marking rod to the ground is equal to the altitude from the fixing holes to the ground; the marking end head is pressed to the top surface, so as to draw marking points of the two fixing holes; the high-altitude drilling device is placed below the fixing holes, and a handle is pressed downward, so that a drill which is fixedly arranged on drilling equipment aligns with the marking points of the fixing holes; the drilling equipment is turned on to drill the holes which conform to a size; one end of an expansion bolt, which is provided with a nut, is inserted into the top end of the high-altitude tightening device; the expansion end of the bolt is inserted into a drilled fixing hole, and then a handle of the high-altitude tightening device is rotated to tighten the expansion bolt; and the steps are repeated, so as to complete the drill tightening operation of the remaining fixing holes. According to the high-altitude drill positioning method, the disadvantages of low construction quality and large difficulty because no reliable application point exists at high altitude are overcome, the construction quality is guaranteed, various potential safety hazards due to high-altitude construction of construction personnel are avoided, and the construction efficiency is greatly increased.

The invention discloses a driverless vehicle environment simulation test system. The system comprises an environment simulation system and a test system; the environment simulation system is used for establishing a real road environment model for a driverless vehicle and simulating the real road environment for the driverless vehicle; during test, the real road environment model for the driverless vehicle is converted into a task form file, and the task form file is input to a driverless vehicle-mounted control computer, wherein the task form file consists of three-dimensional world geodetic system1984 (WGS84) coordinates of each guide point of a driverless vehicle passing test road section and environmental element codes of the guide points; and the driverless vehicle-mounted control computer sends signals of the three-dimensional WGS84 coordinates of each guide point of the driverless vehicle passing test road section and the environmental element codes of the guide points to a tester held multifunctional box through a vehicle-mounted antenna in the test process, and the tester held multifunctional box receives and displays the signals.

The invention provides a vehicle automatic control method and a system, belonging to the field of electric control. The embodiment of the invention can identify a driver, determine corresponding use habit configuration files of the driver according to the identified driver, and send control commands to electronic systems of a vehicle, such as an interior lighting system, a seat adjusting device, an air conditioning system, a steering wheel adjusting device, a radio adjusting device, a video playback system, a rearview mirror adjusting device, a steering wheel position and the like to enable the electric systems to be adaptive to the habits of the driver. The vehicle automatic control method and the system of the embodiment of the invention can prevent potential safety hazards caused by the attention shifting of the driver when driving the vehicle.

A control method for incoming messages includes steps of: controlling a mobile terminal to enter into a safe driving mode in response to a receiving of a command for controlling the mobile terminal to enter into the safe driving mode; obtaining a predetermined block condition and determining whether there is a need to automatically block an incoming message or not according to the obtained predetermined block condition when the incoming message is received by the mobile terminal; and rejecting and responding the incoming message with a predetermined message when it is determined that there is a need to automatically block the incoming message. A mobile terminal is also provided.

The invention provides a charging device for an electric vehicle, which comprises a power supply connector, a power receiving connector, a safe charging signal generating unit and a CAN control module, wherein the power supply connector is provided with one of a charging terminal and a charging terminal accommodating chamber; the power receiving connector is provided with the other one of the charging terminal and the charging terminal accommodating chamber; the safe charging signal generating unit is arranged on the charging device; the CAN control module receives a safe charging signal generated by the safe charging signal generating unit; and when the charging terminal and the charging terminal accommodating chamber are mutually connected and the power supply connector, the power receiving connector are mutually combined and the CAN control module detects the safe charging signal, the charging device charges the electric vehicle. The charging device adopts a double-insurance structure combining a mechanical structure and a CAN control module, so safety hazards caused by accidents, misoperation and the like to operators are avoided.

The invention discloses a liquid nitrogen cylinder, a cryogenic vial storing and fetching device and a liquid nitrogen cylinder storing and fetching system. The liquid nitrogen cylinder comprises a cylinder body, wherein the cylinder body is provided with a sealed opening; the liquid nitrogen cylinder further comprises a bracket tray; the bracket tray is arranged in the cylinder body; the bracket tray is used for bearing cryogenic baskets; a central shaft is vertical to the bracket tray and is fixedly connected with the bracket tray; a driving component is electrically connected with the central shaft; the driving component is used for driving the central shaft to rotate; and the central shaft is used for driving the cryogenic baskets to rotate through the bracket tray and conveying the cryogenic baskets to the opening. By adopting the liquid nitrogen cylinder, the error rate of manual cryogenic vial selecting is reduced; and meanwhile, safety hazards for operation personnel during a manual bracket tray rotation process are avoided. By adopting the cryogenic vial storing and fetching device, the process for selecting a single target cryogenic vial for biological samples is realized; and during the whole selecting process, the cryogenic vials are all in a liquid nitrogen environment, so that non-target cryogenic vials are prevented from being exposed at environment temperature. The liquid nitrogen cylinder storing and fetching system is applicable to vial picking work for large biological sample banks.

The invention discloses an authentication method and device based on a voice. The authentication method based on a voice comprises the following steps: generating text authentication information; displaying the text authentication information to a user to be authenticated and prompting the user to make a response; and receiving response voice information of the user, performing voiceprint authentication and voice identification on the voice information, and judging whether the user passes the authentication according to an identification result. According to the technical scheme provided by the embodiment of the invention, a voiceprint authentication technology is combined with the voice identification technology; therefore, the identity of the user can be determined through voiceprint authentication, and the user can make a response to the instantly generated authentication information; whether the content of the response voice information of the user conforms to the generated authentication content is judged through voice identification, so that record cheating can be effectively avoided; and the potential safety hazard of the conventional single voiceprint identification technology is avoided.

The invention provides a cooking electric appliance, which comprises a cooking electric appliance main body, at least one acoustic surface wave temperature sensor and a signal reader-writer, wherein the at least one acoustic surface wave temperature sensor is arranged in the cooking electric appliance main body and is used for sensing the temperature of a position to be detected, and is used for receiving electromagnetic scanning signals sent by the signal reader-writer and returning the electromagnetic wave signals with the temperature signals; and the signal reader-writer is arranged in thecooking electric appliance main body and is used for sending the electromagnetic scanning signals to the at least one acoustic surface wave temperature sensor, receiving the electromagnetic wave signals returned by the at least one acoustic surface wave temperature sensor, and determining the temperature signals sensed by the at least one acoustic surface wave temperature sensor according to the electromagnetic wave signals. By using the technical scheme, a device for detecting the temperature can be conveniently arranged inside the cooking device; and meanwhile, the problem of potential safety hazard generation due to insulation layer damage or insulation performance reduction of a conducting wire caused by a temperature detection mode by a thermistor in the prior art can be solved.

The invention relates to a speaker voice playback identification method and an identification system, in particular to a speaker voice playback identification method and an identification system based on environmental noise change detection. According to the identification method and the identification system provided by the invention, on the basis of environmental noise change before and after to-be-detected voice, it detects whether new noise (including noise introduced due to play equipment channel characteristics) is introduced with the playing of voice recording equipment or not so as to judge whether it is playback or not, so that playback attack detection of an ASV (automatic speech verification) system is implemented in voice detection independent of a specific text, potential safety risks of the ASV system due to playback attack are avoided and the safety guarantee of voice print recognition is completed; and meanwhile, by detecting the play equipment, an assisting effect is also achieved on the detection of speech synthesis invasion and speech switching invasion.

The invention discloses a liquid nitrogen container and a cryogenic vial pick-and-place device. The liquid nitrogen container comprises a container body, and further comprises a rotary disc, a cryopreservation frame, a central shaft and a driving assembly, wherein an opening is formed in the container body; the rotary disc is arranged in the container body; the cryopreservation frame is supported by the rotary disc and comprises a plurality of layers of placement faces; the included angle between each placement face layer and the rotary disc is 40-60 degrees; the central shaft is perpendicularly arranged with and fixedly connected with the rotary disc; the driving assembly is electrically connected with the central shaft and used for driving the central shaft to rotate; and the central shaft is used for driving the cryopreservation frame to rotate through the rotary disc to reach the opening of the container body. By adoption of the liquid nitrogen container and the cryogenic vial pick-and-place device, the workload of operating personnel is reduced, the error rate of manual picking of cryogenic vials is lowered, and the potential safety hazard for the operating personnel is avoided. The liquid nitrogen container and the cryogenic vial pick-and-place device are particularly suitable for the work of picking cryogenic vials in a high-capacity biological sample bank, and meet the technical requirement for storage in the high-capacity biological sample bank.

The invention relates to a decision model training method, prediction method and device based on longitudinal federated learning. The training method comprises the steps that a training sample set participating in training and a training feature set are randomly determined; at each node of the current decision tree to be trained, determining node information of the node, and generating a first split gain set; receiving a split sample set generated by at least one second terminal; generating a second split gain set based on the split sample set and the label data; determining a splitting feature of the node based on the first splitting gain set and the second splitting gain set; and generating the decision model based on the plurality of trained target decision trees. According to the method and the device, the problem that the label data is leaked in the transmission process can be avoided, the safety of the node data of each participant is improved, and the data privacy of each participant node is protected.

The invention provides a refrigerant leak detection method and device and an air conditioner. The refrigerant leak detection method includes the steps that the real-time gas exhaust temperature of a compressor of the air conditioner is detected; according to the work condition and the running state of the air conditioner, the theoretical gas exhaust temperature of the compressor is determined; and according to the real-time gas exhaust temperature and the theoretical gas exhaust temperature, whether refrigerants in the air conditioner leak or not is determined. By means of the technical scheme, whether the refrigerants in the air conditioner leak or not can be detected, and harm to the air conditioner and potential safety hazards brought to users because of refrigerant leakage are avoided as far as possible.

The invention discloses an optimization operation method based on energy consumption analysis for power plant and a system thereof. The method includes the following steps: a data acquisition subsystem acquires real-time operational data and carries out pre-processing on the specific real-time data; a data processing subsystem analyzes and calculates the real-time data, so as to obtain the real-time energy consumption index under the current working condition, the real-time energy consumption index under the current working condition is compared with the energy consumption index under the corresponding working condition stored in an optimal working condition database, comparison result is output to a data display subsystem, and meanwhile if the real-time energy consumption index obtained by calculation is superior to the optimal energy consumption index under the corresponding working condition, the current real-time working condition is stored to be corresponding optimal working condition; and the data display subsystem displays the real-time energy consumption index under the current working condition and the comparison result of optimal energy consumption indexes under the corresponding working conditions. The method of the invention can more accurately analyze various energy consumption differences of power plant and the reason of exceeding of energy consumption difference, and a reliable optimization scheme is provided.

The invention discloses an intelligent parking warning device and a control method of the intelligent parking warning device. The device comprises a warning sign, a movable chassis, a lane line acquisition device, a distance measurement device and a controller, wherein the controller comprises a micro control unit and a wireless control communication module, the warning sign is fixed on the movable chassis, a driver and a conductor remotely control the micro control unit through the wireless control communication module to place or take back the warning sign, the micro control unit controls the movable chassis to move a scheduled distance along the direction of a lane line according to the lane line information acquired by the lane line acquisition device and the moving distance measured by the distance measurement device, and the movable chassis is controlled by the micro control unit to drive the warning sign to move a scheduled distance. Due to the embodiment of the invention, the driver and the conductor do not need to walk to accurately place and take back the warning sign, so that the safety of temporary parking on the road is improved.

The invention provides a safe ATM system and an operation method thereof. The system comprises an ATM terminal, a bank service center and mobile communication equipment; wherein, the ATM terminal is connected with the bank service center, the mobile communication equipment can be provided with a storage module used for storing user account information, the ATM terminal can be used for reading the user account information of the storage module by means of near field communication and transmitting the user account information into the bank service center to be verified. The invention adopts the method based on mobile key and mobile phone NFC technologies for ATM verification; the mobile key is encrypting and decrypting equipment based on a smart mobile phone, the password and digital certificate of the user are stored in the mobile phone, and the user identity is identified and the information is encrypted by the cryptographic algorithm set in the mobile phone. An NEC chip can be used for storing the information of client account number, a keyboard of the mobile phone is used for inputting the password, a mobile key authenticator system is used for signing, and the signature is transmitted into a banking system, so that ATM ID authentication can be realized by the mobile phone.

The invention discloses a method for cultivating a low-cadmium-accumulation indica rice variety. The method includes the steps of cloning part of the CDS sequence of OsNramp5 of an indica rice acceptor material; using a CRISPR / Cas9 system to select a target sequence according to an exon sequence; building pCRISPR / Cas9 recombinant vectors; leading the pCRISPR / Cas9 recombinant vectors into rice calluses to obtain transgene seedlings; screening transgene positive plants; obtaining mutant plants; and conducting seed propagation of the mutant plants, and separating afunction mutants containing no transgenic ingredients from plant progenies. By means of the method, the cadmium absorption major gene OsNramp5 of indica rice is directionally knocked out through the CRISPR / Cas9 technology, and the indica rice material containing no transgenic ingredients, having no significantly variant comprehensive agronomic characters and achieving a low cadmium content in rice is directionally cultivated. The method has the advantages that targeting is efficient, the breeding period is short, cost is low and practicality is high.

The invention discloses a juicer with the air bleeding function and aims at providing the juicer which can greatly reduce the oxygen content in a juicing cavity, prevents the browning from occurring in the juicing process and maintains the nutritional components and mouth feel of fruit juice or vegetable juice. The juicer is characterized in that a charging barrel is arranged on the juicing cavity; a juicing mechanism is arranged in the juicing cavity; an output shaft of a juicing motor is connected with a driving shaft of the juicing mechanism; the juicer also comprises an air bleeding device; a sealing device is arranged on the charging barrel; an interconnected cavity is formed by the charging cavity, the juicing cavity, a juice receiving part and a residue part; the mutual connecting parts of the cavity body are connected in a sealing manner; the connecting part between the cavity and any one part is sealed; the cavity is airtight in the juicing process; an air bleeding port of the air bleeding device is communicated with the cavity; and an exhaust port of the air bleeding device is arranged outside the cavity. The juicer can juice foodstuff in the juicer under an oxygen deficiency condition, thereby the browning is effectively controlled, the browning of foodstuff liquid is greatly reduced in the juicing process, the nutritive loss is reduced, and the good mouth feel and appearance color are maintained.

The invention discloses a method and a device for detecting power battery insulation resistance of an electric automobile. Two circuits of universal input / output interfaces of a micro-controller are respectively and externally connected with positive and negative insulation switch circuits. Positive and negative insulation switch relays are gated. Insulation resistance sampling voltage is output. The sampling voltage is amplified by an operational amplifying circuit, isolated by a voltage isolation chip and input in an analogue-digital conversion unit of the micro-controller. An insulation resistance value of a current power battery is calculated by the micro-controller according to an algorithm, transmitted to a battery management system through a communication module in the form of message and used by the battery management system. According to the method and the device disclosed by the invention, the problem that positive leakage, positive leakage or positive and positive leakage cannot be judged by the traditional insulation resistance detection device is effectively solved; the leakage degree of the current power battery can be precisely measured; and potential safety hazards resulted from inaccuracy of the insulation resistance are stopped.

The invention provides an electromobile charging system which comprises a battery pack, a main positive relay, a main negative relay, an electromobile controller, a quick-charging relay, a quick-charging auxiliary relay, a slow-charging relay, a slow-charging auxiliary relay and an electromobile-mounted charger. Normally-open contacts of the quick-charging relay and the slow-charging relay are in series connection, and normally-open contacts of the quick-charging auxiliary relay and the slow-charging auxiliary relay are in series connection. The invention further provides a control method adopting the electromobile charging system for quick charging and slow charging. By the electromobile charging system and the charging control method, charging safety of an electromobile can be improved.

The invention provides a construction method for a soft rock deformation tunnel lining support dismantling-replacing arch. One-time whole section integral dismantling and replacing of a lining support is achieved. The construction method has the advantages that before dismantling and replacing, a lining which loses bearing capacity is subjected to grouting reinforcement treatment first, then a temporary cover arch is additionally arranged outside for reinforcement, and afterwards, the lining support is dismantled step by step, so that potential safety hazards caused by dismantling or removing of a temporary platform frame are avoided, and some security risks are avoided effectively. According to the construction method, the construction difficult problem of soft rock large deformation occurs during construction of a tunnel in special and complex geology is solved. Through the created novel construction method, the construction difficult problem of second lining cracking deformation needing remediation due to weak surrounding rock large deformation is solved. Through the construction method, safe, fast and economic treatment and remediation of the lining support and arch replacing construction are achieved, and the tunnel structure stability and construction safety are ensured effectively.

The invention discloses a drilling device for a steel structure, which comprises a machine body. Both sides above the inner wall of the machine body are provided with organic casings. One motor, the output shafts of the two first motors are fixedly sleeved with driving wheels, the inner chambers of the two casings are provided with driven wheels, and belts are movably connected between the two driving wheels and the driven wheels, and the two belts Both of them are fixedly connected with fixed blocks, and the two fixed blocks are slidably connected to the inner wall of the through groove, and a support frame is fixedly connected between the two fixed blocks, and the left side of the top of the support frame is provided with a first cylinder. The invention solves the problem that the drill cannot be displaced laterally by adding a device for lateral movement to the drill, and achieves the purpose of the clamp device being able to move forward and backward by setting the turntable and the screw rod, and solves the problem that the existing steel structure drilling cannot be clamped at one time Problem with drilling multiple times.

The invention relates to the technical field of network security and discloses a login system which comprises an application access platform and an identity and access management platform; wherein, the application access platform is used for installing and issuing an application system so as to lead users to login the application access platform and realize the logging in the application system which can pre-arrange and store related information of the application system; the identity and access management platform is used for obtaining the logging information and resource information of the application system from the application access platform, arranging the relatively accessible resource content and corresponding relations of network users and the users logging the application system, receiving the logging and making authentication of the network users. After the network users login the identity and access management platform with the application of the system disclosed by the invention, the identity and access management platform accesses the resource of the application system as legal users of the application system without leading the users directly to access the application system and the invention is high in access security and simple in the login operation of users.

The invention discloses a large cross-section weak surrounding rock tunnel three-step and six-part short-distance construction method, which comprises the steps as follows: (1) annularly excavating an upper step of an upper part arc pilot tunnel, transferring excavated earthwork of the upper step to a lower step; (2) excavating a left part of a middle step about 4.5-5 meters behind the upper step, and transferring excavated earthwork to the lower step; (3) excavating a right part of the middle step about 3-4 meters behind the left part of the middle step, and transferring excavated earthwork to the lower step;(4) excavating a left part of the lower step about 6-8 meters behind the left part of the middle step or about 3-4 meters behind the right part of the middle step, and conveying excavated earthwork of the left part of the lower step out of the tunnel; (5) excavating a right part of the lower step about 3-4 meters behind the left part of the lower step, and conveying excavated earthwork of the lower step out of the tunnel; and (6) excavating the rest part of the tunnel bottom about 20-25 meters behind the right part of the lower step, excavating continuously according to the steps in a circulating and interlacing manner, and finally realizing tunnel excavating construction. The method can be used for building a large cross-section tunnel in a safe, rapid and economic manner.

The embodiment of the invention discloses a method for realizing client login through an intelligent terminal, a server and the intelligent terminal. The login method comprises the steps: the server receives a login request message, which is sent by a client and carries a login account; the server looks for an intelligent terminal which is logined through the same login account with the client and / or an intelligent terminal which is logined through a bound login account of the client from logined intelligent terminals, and the found intelligent terminal is a control intelligent terminal which allows or rejects the client login; the server forwards the login request message to the control intelligent terminal of the client; the server receives a login response message sent by the control intelligent terminal of the client; and the server allows or rejects the client login according to the indication of the login response message. According to the embodiment of the invention, the login process can be simpler and easier, the operation by a user is facilitated.

The invention provides a security inspection detection method, a security inspection detection device, a security inspection detection system and electronic equipment. The method comprises the steps of acquiring an X-ray image which is collected by an X-ray machine in a security inspection machine and received by a security inspection terminal, and preprocessing the X-ray image to obtain a preprocessed X-ray image; extracting object characteristics of a corresponding to-be-detected object in the preprocessed X-ray image according to a preset deep learning model, wherein the preset deep learning model includes a deep learning model based on a convolutional neural network; identifying the object characteristics by use of a classifier trained based on the preset deep learning model to generate an identification result of the corresponding to-be-detected object; sending the identification result of the to-be-detected object to the security inspection terminal so that the security inspection terminal displays the identification result. According to the technical scheme provided by the embodiment, automatic identification detection for prohibited goods is realized; while improving the identification efficiency, the accuracy for identification of the prohibited goods is effectively guaranteed and the potential safety hazard is prevented.

The invention relates to a blockchain-based safety excitation method and system in a crowd sensing application. In the method, a user side and a server side, as both transaction parties of a blockchain, carry out transaction. The method comprises the following steps that: 1, a server releases a perception task to the user side; 2, after executing and completing the perception task, the user side uploads perception data to the server; 3, a miner in the blockchain verifies quality of the perception data and sends the quality of the perception data to the server; and 4, the server pays the remuneration to the user side according to the quality of the perception data. Further, after obtaining the quality of the perception data, the miner quantifies an effective contribution of the quality of the perception data by utilizing a mutual information principle and sends the effective contribution to the server, and then the server gives the corresponding remuneration to the user side according to the effective contribution. According to the invention, safety excitation in the crowd sensing application is implemented by adopting a distributed architecture of blockchain safety, a collusion attack initiated by a perception platform can be effectively prevented, and potential safety hazards which a credible third party faces are overcome.

The invention discloses a wireless security communication method and system for ensuring the security of wireless communication in an intelligent transportation system, improving the data processing efficiency and reducing the complexity of security communication. The method comprises the following steps: at least one first secret key and identification information thereof are respectively stored in an OBU (On-Board Unit) and a CCS (Central Computer System) server; and the OBU is used for generating a second secret key on the basis of a random number and the first secret key after a digital certificate of the CCS server is passed through verification, encrypting information to be transmitted by adopting the second secret key, and then sending the identification information of the first secret key and the random number which generate the second secret key, and the information encrypted by the second secret key to the CCS server. The invention simultaneously discloses a wireless security communication system.

The invention discloses a secure certification and transaction method with the combination of a digital certificate and a one-time password. The method comprises two steps of: a secure certification method and a secure transaction method. The secure certification and transaction method specifically comprises the steps of: first, performing bidirectional certification between a client and a server on the basis of the digital certificate; then, realizing secure certification through the combination of the digital certificate and the one-time password on the basis of the bidirectional certification; and finally, realizing secure transaction through the combination of the digital certificate and the one-time password on the basis of the bidirectional certification. By the method, the identities of users are confirmed by combining the digital certificate and the one-time password so as to realize the secure login and secure transaction of various application systems. By the method, the digital certificate and the one-time password are organically combined, so that the safety hidden trouble caused by separately using the digital certificate or the one-time password is avoided, respective security advantages of the digital certificate and the one-time password are fully exerted, various attacks can be resisted, high security is achieved, the demand of various high security application in the network can be met, and the method has higher practical value and broad application prospect in the field of network security technology.

The present application discloses an intelligent lock, an intelligent lock authorization management method, and an intelligent lock authorization management apparatus. The intelligent lock comprises: a locking member for making the intelligent lock in a unlocked or locked state; a memory for storing the Key pool of the intelligent lock, wherein the Key pool is the set of secret keys for opening the intelligent lock; a transceiver for receiving the unlocking request from a terminal device; and a processing chip for comparing the Key value included in the unlocking request and the intelligent lock Key pool stored in the memory and controlling the locking member to unlock in the case that the Key value included in the unlocking request is in the Key pool.