233 results about "Safety regulation" patented technology

An unmanned aerial vehicle selectively formed of high strength composite structural part portions and lightweight aerodynamic foam portions to provide a low-cost and lightweight UAV that comports with export, civil airspace, and safety regulations. To further to reduce an overall weight of the UAV, mechanical elements are designed to provide multiple functionalities. Structural elements may be manufactured in same or similar non-specialized processes, and non-structural elements manufactured in same or similar non-specialized processes, reducing overall manufacturing costs. Materials and bonding elements are selected to provide frangibility and yet maintain normal flight structural integrity.

A modular battery pack includes a plurality of battery modules. Each battery module includes a plurality of cells disposed within a cell compartment that is hermetically sealed from a circuit compartment in the battery module. The liquid-impenetrable seal is achieved by insert molding tabs that electrically connect the cell compartment and the circuit compartment. Additionally, the lid of the battery module is ultrasonically welded to the battery module housing. The battery modules are placed into battery module compartments in a main housing, and couple to a main connector by way of a printed circuit board that couples the main connector to battery module connectors on each battery module. The pack ensures that any electrolyte that may leak from a cell does not compromise the electronic circuitry and associated components within the pack. Additionally, the fact that the pack can be separated into modules allows the pack to be shipped in conformity with applicable transportation and safety regulations.

An externally-mounted camera system for large commercial trucks. The video cameras are positioned around the outside of the vehicle and feed their video images to a control unit within a tamper-proof black box typically located within the truck's cab. The cameras are wide-angle 360 degree type cameras and only four cameras completely surrounding the truck. This system is designed to work with the Federal Motor Carrier Safety Administration and Accident Reporting regulations, standards, and protocols. The video feeds will be attached to accident reports and reviewed by the federal authorities who provide feedback in compiled statistics and enhanced safety regulations.

An enhanced safety scaffold assembly (10) is provided including end frames (12,14) interconnected by means of cross-tie structure (18,20). The end frames (12,14) include ledgers (36) located a safety distance (38) of at least about thirty inches below the upper ends (26b,28b) of the standards (26,28), and are free of additional ledgers within the safety distance. A platform (16) is supported by the ledgers (36), and guardrail assemblies (22,24) extend between opposed standards (26,28). In this way, the platform (16) is located well below the upper ends (26b,28b) of the standards (26,28) in accordance with existing safety regulations, and placement of a platform (16) in an unsafe, elevated position is precluded. The assemblies of the invention may be constructed in a variety of ways to include optional leveling units (58), ladders (44), outriggers (134) and supplemental work platforms (144).

The invention discloses a farm and pasture product information statistical monitoring, tracing inquiry and process tracking system and method based on an Internet of Things technology; the system comprises a database server, a network module and a two-dimensional scanner; the farm and pasture product manufacturing information, quality inspection information, health and epidemic prevention information, logistics information and wholesale and retail information are uploaded to the database server through the two-dimensional scanner, the information in the database server is accessed, recorded, searched and inquired through the network module, and then the farm and pasture product manufacturing information, circulation information and sale information are unifiedly administrated and caculated through the database server, the information of all the data is monitored through the database server, and the supply-demand relationship is compared through the database server. According to the invention, all-process regulation to farm and pasture products can be carried out from manufacturing to sale, so that the farm and pasture product safety regulation system is effectively improved, the farm and pasture product quality level is practically improved, the food safety of consumers is fully ensured, the occurring and harm of food safety accidents are reduced, farmers and herdsmen are helped to carry out production, blind production is avoided, and the phenomenon that prices fluctuate due to the supply-demand relationship of the farm and pasture products is effectively controlled.

The present invention provides a light source driver circuit for improving power conversion efficiency and avoiding a high cost due to the requirements of safety regulations. The light source driver circuit comprises a pulse width control circuit that uses an AC power supply to produce a square wave; a first transformer having a primary winding for inputting the square wave and a secondary winding for outputting a transformation square wave; a resonant circuit that inputs the transformation square wave for producing a resonance sine wave; and a second transformer having a primary winding for inputting the resonance sine wave and a secondary winding for outputting a transformation sine wave to drive a light source.

A parent-child leadframe type transformer includes a ferrite core module, a child leadframe and a parent leadframe. The parent leadframe has a first opening and a second opening on both ends. The length of the second opening is greater than the length of the first opening along the same axial direction. A containing space is defined between the first and second openings. The child leadframe has a coil winding slot and a through hole for installing the ferrite core module. The axial length of the child leadframe falls between the first and second openings, such that the child leadframe and the ferrite core module can be passed through the second opening, but limited by the first opening. The child leadframe, ferrite core module and parent leadframe are positioned to define a parent-child type transformer structure for reducing the overall height and complying with the safety regulation standards.

Embodiments of the invention disclose a method and a device for automatic defense distributed denial of service attack of a firewall. The method comprises: performing FLOW analysis on data traffic passing through and reaching a firewall device; according to the result of the FLOW analysis, if the result is detected to conform to attack characteristics of a certain distributed denial of service (DDOS) attack type, and the data traffic conforming the attack characteristics is DDOS attack flow, according to correspondence between DDOS attack types and protection security strategy arranged in advance, automatically generating protection security strategy holding up DDOS attack flow, and configuring the generated protection security strategy on the firewall device; and responding to disappearing of the attack characteristics which conform to a certain DDOS attack type, deleting the protection security strategy from the firewall device, the strategy holds up the DDOS attack flow. The method does not need to configure the protection security strategy in a safety regulation base of the firewall device in advance, and automatic defense of DDOS attack can be realized on a universal firewall device.

Highway safety regulations generally limit the length of trailers to 75'. Most large conveyors generally have two top folds, one at each end of the conveyor. This format facilitates a trailer which is balanced on a wheeled support both in an unfolded operative position and a folded towing position. The mono-fold trailer conveyor comprises: a main conveyor section having a feed end portion; one and only one folding discharge conveyor section having one end hingably attached to the main conveyor section and having a length exceeding one half of the length of the main conveyor section; and, a counterweight positioned on the feed end portion of the conveyor, necessitated by the otherwise unbalanced folding discharge conveyor section, and sized to stably maintain the discharge end of the conveyor in an elevated position when the conveyor is in an operative unfolded position. With a counterbalanced mono-fold trailer conveyor there is a substantially greater horizontal run between the wheeled support and the discharge end of the conveyor. This means that a mono-fold conveyor can stockpile a substantially greater volume of material than a bi-fold conveyor of similar length without being moved. The mono-fold trailer conveyor is also easier and less costly to manufacture; stronger; and safer to transport, setup and operate; than large trailer conveyors of conventional design.

The invention discloses a substation operation and maintenance personnel virtual operation training system, which comprises a virtual vision assembly, which is used for displaying power operation scene pictures to operators in real time; a fall virtual assembly, which is used for simulating the feeling of step-missed falling when an operator misses a step in a power operation scene; a body feeling glove assembly, which comprises a gesture recognition module and an electric shock simulation module, and is used for simulating electric shock accidents when the operator violates safety regulations; a head knock simulation assembly, which is used for simulating part falling accidents when the operator violates the safety regulations; and a virtual control system, which is in communication connection with the fall virtual assembly, the virtual vision assembly, the body feeling glove assembly and the head knock simulation assembly. The advantages are that by applying the augmented reality technology to training of substation operation and maintenance personnel, realness, practicality and effectiveness of the training are effectively improved, and the operators are allowed to understand composition and distribution of substations more effectively.

A three-dimensional miniaturized power supply is composed of at least two of a first circuit board and a second circuit board which are assembled in a chamber of a container in a three-dimensional spatial form, wherein an insulation spacing, which is in compliance with an ITE safety regulation, is provided between a circuit of the first circuit board and a circuit of the second circuit board, allowing an area and a volume of the power supply to be miniaturized, such that the power supply can be emplaced in a small container.

The invention relates to a grass cutting machine, which comprises a host machine, a switch, a push rod, a switch box, an operation element and a safe key, wherein the operation element is connected with the switch box, and is provided with an operation position and a resetting position, the operation element is maintained in the operation position when being operated by an operator and is positioned in the resetting position when being not operated, the safe key is detachably arranged in a lock hole formed in the switch box, the safe key is provided with an operation position and a resetting position, the safe key is maintained in the operation position when being operated by the operator and is positioned in the resetting position when being not operated, when the safe key is switched to the operation position, the action of switching the operation element to the operation position is allowed to trigger the switch to be conducted; when the safe key is positioned in the resetting position, the action of switching the operation element to the operation position is forbidden to trigger the switch to be conducted, the safe key and the switch box are integrated, the effect of starting the grass cutting machine only through operating two components on the push rod is achieved, the safety regulation is met, and meanwhile, the operation and the control are convenient.

The invention discloses an intrusion prevention system for a vehicle-mounted information system. The intrusion prevention system comprises a power transmission system, an electric power steering system, an electronic stability control system, an instrument panel, a diagnostic system, a vehicle body control system, a sensor, an accelerator, a multimedia system and a vehicle-mounted mobile phone. The power transmission system, the electric power steering system, the electronic stability control system, the vehicle body control system and the multimedia system are connected with the diagnostic system through a gateway, the diagnostic system is connected with the vehicle-mounted mobile phone, the instrument panel is connected with the vehicle body control system and the power transmission system, and the sensor and the accelerator are connected with the vehicle body control system. Compared with the prior art, the powerful calculation capability and storage capability of the mobile phone are utilized, the mobile phone is set as an intrusion prevention center; the formulation of safety regulations, storage of a virus reservoir, the judgment of security situation awareness and the connection with a cloud are all finished through the mobile phone, users' life and property safety is guaranteed, and the intrusion prevention system has popularization and application values.

The object of the invention is to provide an engineering whole process management system based on BIM + AR. The management system comprises a BIM database, a background management system and an AR intelligent mobile terminal. The BIM database and the background management system are arranged at the cloud end, and each AR intelligent mobile terminal is connected through the Internet. The BIM database comprises a designed three-dimensional digital model, a construction key point model and a major safety risk point control measure model. The background management system includes big data of technical specifications and safety regulations involved in the whole process of the project. The invention solves the problem that engineering managers in the traditional form can only realize the visualization of simulating engineering construction process by using a BIM model in a virtual environment, Obtain less or slower feedback information about the actual construction situation on the site, aswell as to achieve the project in the design review stage, design disclosure stage, construction stage and completion acceptance stage of the whole process of implementation management.

The invention, which is suitable of the rail transport industry, provides a power supply design circuit with the high-level electro magnetic compatibility and safety regulation performance. The power supply design circuit comprises an input unit, an isolation filtering protection unit and an output unit, wherein the units are successively connected. The isolation filtering protection unit includes an electromagnetic anti-interference protection circuit, an electromagnetic interference filtering circuit, and an isolation circuit; the electromagnetic anti-interference protection circuit clamps and discharges a common-mode interference signal and a differential-mode interference signal that are outputted by the input unit; and the electromagnetic interference filtering circuit carries out common-mode filtering on an input signal and an output signal of the isolation circuit and carries out differential-mode filtering on the input signal of the isolation. Because of the electromagnetic anti-interference protection circuit and the isolation circuit, the input unit and the output unit are isolated a PCB board space design is carried out, so that the high isolation insulated voltage requirement can be met and the voltage-resistant property can be improved. Meanwhile, the electromagnetic interference filtering circuit filters an interference signal outputted by the input unit, thereby meeting the limit value requirements of radiation and conduction of the circuit.

The invention relates to the field of design of electric vehicles, in particular to a generation method of regenerative braking policies of a double-shaft drive pure electric vehicle. Firstly, a proportionality coefficient of a front wheel regenerative braking torque to a total regenerative braking torque corresponding to different wheel upper rotating speeds n and different wheel upper regenerative braking torque demands T is calculated according to MAP maps of front and back motors; the proportionality coefficient enables the utilization efficiency of front and back motor systems to be the highest; then, a braking safety area is calculated according to whole vehicle parameters, ECE braking safety regulations and an ideal braking distribution curve; finally, the regenerative braking policies are generated according to the proportionality coefficient and the braking safety area; and the regenerative braking policies enable the recovery efficiency of regenerative braking energy to be the highest, so that the influence on the energy recovery by the distribution of front and back shaft regenerative braking force is fully considered, and more braking energy is recovered.

The invention discloses a method and a device for discharging the voltage of a direct current bus capacitor in a three-phase bridge type power electronic conversion system, wherein the voltage of the direct current bus capacitor in the three-phase bridge type power electronic conversion system can be discharged based on the hardware of the system itself. In this way, the requirements of safety regulations can be met, while no additionally configured bus discharge resistor in the prior art is adopted. Therefore, the system is higher in operation efficiency, smaller in caloric power and lower in cost.

Eye-safe, low-power-density, Class 1 or Class 3R laser treatment systems for medical applications are disclosed. Systems having controlled power and stray irradiation can meet laser safety requirements according to IEC 60825-1:2007 or equivalent for eye-safe rating; classification as laser-Class 1 or as laser-Class 3R. Laser system comprises a diode laser source, an optical fiber probe, means for detecting and identifying said optical probe and means to ensure that laser power transmitted from the fiber probe is limited to pre-specified maximum power level per application; laser wavelength; emission characteristics; probe characteristics; limiting values according to applied safety regulations. Device can identify the connected optical fiber probe to exclude using non-conforming optical fiber probes and/or to limit maximum output to optical powers in compliance with laser safety regulations. System preferably operates at a wavelength of 1400 nm or higher. Breakage or leakage from fiber probe is detectable and prevented.

The invention discloses a generation method of a regenerative braking strategy. The generation method of the regenerative braking strategy is suitable for a double-motor double-shaft driving electriccar and includes the steps of obtaining a corresponding distribution coefficient of double motor regenerative braking torques when a double motor device has the highest efficiency under the requirements for different rotation speeds of wheels and different regenerative braking total torques according to a double motor loss model, thereby obtaining the best distribution coefficient; calculating a braking safe area according to the whole car structure parameter, ECE braking safety codes and an ideal braking distribution curve; and generating the regenerative braking strategy according to the obtained beast distribution coefficient and the braking safe area, wherein the regenerative braking strategy enables the regenerative braking energy recycling efficiency to be the highest. In the whole car optimization design period, the influence of the double motor regenerative braking power distribution coefficient on energy recycling can be fully considered, and the energy recycling efficiency inthe braking process can be improved.

Embodiments of the invention provide an SQL statement detection method and system, and aims at rapidly and efficiently detecting and defensing database security holes. The method comprises the following steps of: extracting feature information of each statement from to-be-detected structured query language SQL statements by an analysis module; loading a configuration file by a safety regulation plugin, matching the feature information according to corresponding safety regulations in the configuration file, and determining safety regulation IDs of the successfully matched safety regulations according to the matching result, wherein the safety regulations correspond to at least one safety regulation ID; and carrying out statistics on the successfully matched safety regulation IDs by a strategy matching module and executing preset safety strategies corresponding to the safety regulation IDs.

The present invention discloses a network security regulation conflict analysis and simplification method. The network security regulation conflict analysis and simplification method analyzes the relation between regulation items based on target equipment and detailed content of a safety regulation, alarms when regulation conflict occurs, and automatically deletes useless regulation items (simplifying the regulation). Compared with the traditional information network security strategy analysis, the method provided by the invention supports analysis of detailed information of deep data packets of network protocols in network security, and supports complex logic relation analysis between the safety regulation items. The user can understand the relation between complex regulation items conveniently through analysis results, and the usability of the safety regulation is improved. The regulation simplifying function of the network security regulation conflict analysis and simplification method allows the user to realize complex functions such as combination and optimization of regulations and regulation item modification conveniently.

The invention belongs to the technical field of nuclear reactor reactivity control and particularly relates to a nuclear reactor reactivity control mechanism which comprises a safety rod assembly arranged in a core of a nuclear reactor and capable of going in or out of the core through reciprocating motion, wherein a core lattice for mounting a fuel assembly is arranged in the core. The nuclear reactor reactivity control mechanism further comprises a plurality of cylindrical and rotatable control rod assemblies arranged in the annular reflecting layer on the outer side of the reactor core, andstarting, power regulation and shutdown protection of the nuclear reactor are achieved by adjusting the angle facing the fuel assemblies of an inner neutron reflecting layer or neutron absorber on the control rod assemblies. On the premise of meeting the requirements for reactor design independence and redundancy of nuclear safety regulation, the nuclear reactor reactivity control mechanism has the advantages of being simple, reliable in function, compact in structure and making control rods rapidly drop without relying solely on gravity and the like; the possibility of common cause faults and common failure of multiple control mechanisms does not exist, and the safety of the nuclear reactor is greatly improved.

The invention discloses a vertical-type transformer structure. The vertical-type transformer structure is different from a transformer structure in prior art. The vertical-type transformer structure is characterized in that an accommodating member is utilized for accommodating a bobbin which warps a primary-side coil. According to the vertical-type transformer structure, after a primary-side iron core is combined with the bobbin which is accommodated in the accommodating member, the accommodating member supplies effective insulation to the primary-side iron core so that a portion between the primary-side iron core and an adjacent electronic assembly can satisfy a related safety regulation. Furthermore, because the bobbin of the primary-side coil is accommodated and packaged by the central accommodating part of the accommodating member, after high voltage is input into the primary-side coil, the accommodating member supplies effective insulation to the primary-side coil, thereby preventing direct bypass of high voltage through an adjacent secondary-side iron core to the secondary-side coil.

The invention relates to a combined device box for power construction overhead work, and relates to the technical field of power construction. The combined device box for the power construction overhead work comprises a material box, and a material box hanging and fixing mechanism, and is provided with tool hanging rings or hanging sleeves. With the adoption of the technical scheme, the combined device box has the benefits that the combined device box is fixed by double screws, is firm to mount, and does not drop; the safety of workers is protected completely; in a using process, articles such as drift bolts and wire clamps can be placed in the material box; the placing problem of devices and materials of pole and tower workers is solved; a requirement of a safety technique is met; and the combined device box is simple in working, convenient to fix, and high in safety factor, meets specifications of safety regulations, and eliminates potential safety hazards.