174results about How to "Safe switch" patented technology

An automatic driving system for vehicles safely switches a vehicle from an automatic drive mode to a manual drive mode. An automatic driving controller of the automatic driving system includes a travel behavior determining unit that determines a travel behavior of a vehicle during automatic driving based on an operational state of a steering system, an accelerating system, and / or a braking system thereof; a driver's state determining unit that determines a state of a driver based on a face image of the driver captured by a face image camera, biometric information of the driver obtained from body pressure of the driver and variation thereof detected by body pressure sensors of a driver's seat, and signals from pressure-sensitive sensors arranged at a steering wheel and the like; and a drive mode switching control unit that controls in stages switching to manual driving based on the determination results.

The invention discloses a switching power supply for an AC / DC-DC self-adaptive instrument within an ultra-wide voltage input range. The switching power supply comprises an input protective circuit, an EMI filter circuit, a power frequency rectification and filter circuit, a high frequency rectification and filter circuit, a boosting conversion circuit, a flyback conversion circuit, a first voltage sampling circuit, a first current sampling circuit, a second voltage sampling circuit, a second current sampling circuit, a first PWM circuit, a second PWM circuit, an auxiliary power supply circuit, a power switching circuit, a voltage detection and comparison control circuit and an optocoupler isolation feedback circuit. A two-stage type cascade circuit is formed by the boosting conversion circuit and the flyback conversion circuit, and the automatic instrument can automatically adapt to power supply of an 85-265V alternating-current power supply and an 18-100V direct-current power supply.

This invention relates to a slide outer rotary multifunction door and window, which contains frame and a number of window wings, wherein frame having three axle rail on top and bottom frame, said window wings having end convex, edge, lock fastener, connector, three axle roller, fastener handle and active latch, it also can be installed with active castor on lower end of wing for being used as door. Said invention has advantages of easy open at any angle, safety, reliable and fine sealing performance.

The invention discloses a man and machine driven type electric power steering system and a mode switching method and belongs to the field of unmanned steering for intelligent cars. The electric power steering system comprises a front torque / angle sensor, a rear torque / angle sensor, a vehicle speed sensor, a man and machine driven type steering controller, a mode switching controller, a steering motor, a steering shaft, a speed reducing mechanism, a pinion and rack mechanism and a yaw velocity sensor. An existing electric power steering system is simply transformed, the rear torque / angle sensor is mounted on the original electric power steering system, torque / angle signals in man driving and machine driving modes are acquired in real time, and great convenience is brought to the work of a steering motor in the two modes; meanwhile, according to signals of the front torque / angle sensor and the rear torque / angle sensor, the steering mode of a current vehicle can be judged simply and quickly, and automatic and safe switching between the two steering modes can be realized.

The invention discloses a multiple modal controlling and switching method for an unmanned aerial vehicle, which determines and divides control modes of a flight control system into an autonomous control mode, a manual amendment control mode, a command control mode, a remote control mode with an innerloop and a remote control mode without the innerloop according to different action degrees and action effects of remote control signals to a flight control system, wherein, the autonomous control mode is a basic mode; the manual amendment control mode is flight control stage of precise postures and tracks mainly against taking off / landing, etc.; the command control mode is determined according to a flight assignment; the remote control mode with the innerloop and the remote control mode without the innerloop are spare modes. A switchover among the modes can either be actively selected according to an operator, the flight assignment or the current flight state, or be automatically entered according to the state of the system, thereby achieving a multi-modal controlling management, and inhibiting a transient response of the aerial vehicle during converting control laws of different modes.

In order to preliminarily confirming whether or not a protection route to be switched over can be safely switched over during a working route being used in a unicast or multicast mode. a notification of communication confirmation / quality confirmation or multicast communication confirmation is received from a manager device is received. When the received unicast or multicast packet does not include an confirmation identifier instructed by the notification while the received unicast or multicast packet includes a destination network or multicast address instructed by the notification, the received packet is mirrored and the confirmation identifier is set in a predetermined area within a header of the packet to be transferred to a preselected protection route. When the received packet includes the destination network or multicast address and the confirmation identifier instructed by the notification, the manager device is notified of a result of the communication confirmation / quality confirmation and the packet is transferred to the protection route.

A remote vehicle safety system for use with a child-operated riding vehicle (100) employs a portable remote control (50) operated by a user, having a transmitter (57) for transmitting a signal to a receiver (107) on the vehicle (100). The receiver recognizes the signal from the transmitter (57). The receiver (107) then operates an actuator (211) causing a modification circuit (109) to modify power being provided to a motor (103) on vehicle (100). It may slow or stop the vehicle (100) preventing a child rider from getting into a dangerous situation.

The invention discloses a computer interlock method and system, and belongs to the technical field of train control. The system disclosed by the invention comprises a plurality of signal devices and an interlock master control module connected with the plurality of signal devices, the interlock master control module exchanges data with an automatic train monitor system (ATS), a train automatic protective system / train automatic operation system (ATP / ATO), a train control system (CBTC) and a railway signal device (LEU), and the interlock master control module controls signal devices in an area of jurisdiction through interlocking. The signal device includes at least one or more of the following devices: a signal device, a track switch, a section and platform screen doors. The invention further discloses a computer interlock system. The technical schemes of the application can be used as a safety processing mode in connection between different railways, the interlock function of a computer can be achieved. Associated functions under a CBTC mode are expanded according to needs of urban mass transit system.

The invention provides a driver-response-ability training system under a scene of automatic-manual driving right switching. The driver-response-ability training system comprises a driving simulator, atask issuing module and a response result recording module, wherein the driving simulator is used for simulating a vehicle driving scene, wherein the driving scene comprises an automatic driving scene and a manual driving scene, and when the vehicle driving scene needs to be switched into the manual driving scene from the automatic driving scene, and the output end of the driving simulator emitsrequest receiving signals; the task issuing module is in communication with the driving simulator and used for issuing task instructions to supply driver to carry out when the driving simulator simulates the automatic driving scene; the response result recording module is in communication with the driving simulator and used for recording response time from carrying out a task to entering the manual driving vehicle scene of a driver after the driving simulator emits the request receiving signals. By means of the driver-response-ability training system under the scene of automatic-manual drivingright switching in the technical scheme, the visual searching ability and cognitive ability of the driver for the traffic environment can be improved, driver response time and scene awareness findingtime of the driver are shortened, and safe and rapid switching of driving right is achieved.

Provided is a switching method for charge control modes of a single-phase intelligent electric energy meter. A local charge control mode and a remote charge control mode are triggered off to switch according to a remote encryption instruction or a switching time signal preset in the interior of the electric energy meter. A master control module is used for automatically controlling an I / O port to refresh and automatically turn on or off function module only in the charge control mode and then automatically switching display content of a display module. In addition, the master control module is used for automatically settling historical data, recording switching events and saving historical data and switching events by means of a storage module. Therefore, the local charge control mode and the remote charge control mode can be reliably and flexibly switched in order to satisfy needs of electric energy measurement and settlement.

The invention relates to a rocket thrust chamber with the fuel switching function and a supply system of the rocket thrust chamber and belongs to an afterburning type rocket engine capable of switching hydrogen peroxide / kerosene into liquid hydrogen. The rocket thrust chamber aims at integrating a hydrogen peroxide / liquid hydrogen engine with a hydrogen peroxide / kerosene engine and achieving the fuel switching function. The technical schemes of a head four-bottom three-cavity structure suitable for switching fuel, a combined fuel nozzle shared by hydrogen rich gas, hydrogen ultra-rich gas and kerosene, a straight-hole type oxidizing agent nozzle continuously injecting oxygen rich gas before and after fuel is switched, a body where an oxidizing agent flows through uninterruptedly for cooling, a hydrogen peroxide system used before and after fuel is switched, a kerosene system used before fuel is switched, a liquid hydrogen system used after fuel is switched and the like are adopted. The rocket thrust chamber with the fuel switching function is suitable for engines of a single-stage-to-orbit rocket, a core-stage rocket and a reusable aerospace craft and the rocket thrust chamber also can be applied to an engine of a hydrogen peroxide / liquid hydrogen upper-stage rocket when fuel is not switched.

According to one embodiment, a power supply system includes a switching device operable to be turned on and off for causing power to be delivered to a load. The switching device has a control terminal. Driver circuitry, coupled to the control terminal of the switching device, is operable to drive the switching device. The driver circuitry further operable to detect a fault condition in the power supply system. If the switching device is turned on when the fault condition is detected, the driver circuitry reduces the voltage at the control terminal of the switching device to a level just above the threshold voltage for the switching device, and holds the voltage at the control terminal to the level just above the threshold voltage for a controlled duration, thereby reducing the saturation current flowing through the switching device. The driver circuitry further reduces the voltage at the control terminal of the switching device after the controlled duration, thereby safely turning off the switching device.

Systems, methods and apparatus are provided through which a safety switch arrangement is assembled to prevent false activation of a subsystem in a medical system. In some embodiments, the safety switching arrangement comprises at least a first and a second type of switching element. In some embodiments, the first and the second type of switch each have an output that is processed by a processor, controller, or logic unit to produce an output signal for activating or deactivating a subsystem in the medical system.

The invention relates to a desktop system switching method for a virtual machine. The desktop system switching method comprises the step of verifying a received desktop switching instruction by using a bottom management system, wherein if verification succeeds, the switching instruction is executed; and if verification does not succeed, the switching instruction is not executed. By the desktop system switching method for the virtual machine, the desktop systems can be switched safely and reliably through the verifying process; the switching process is quick in response; the properties of the virtual machine system are not lost obviously; and better using experience is provided for users.

An apparatus and method are provided for safely switching among security consoles and acquiring ownership with respect to a controlled device by executing an electronic signature using a smart card. An apparatus for executing a security function using a smart card includes: a smart card read unit which acquires a public key of a security console by reading the smart card; an authentication unit which verifies validity of an electronic signature transmitted from the smart card by using the public key of the security console; and a switching unit which switches the apparatus to a security console capable of acquiring ownership with respect to a controlled device if the electronic signature is determined to be valid.

The invention provides a spraying system with the electric lifting function. The spraying system comprises a base, a lifting rod, a mechanical arm and a sprayer. The lifting arm is arranged on the base. The mechanical arm is arranged on the lifting rod. The sprayer is arranged on the mechanical arm and connected with a spray pipe for conveying spray materials. The lifting rod is an electric telescopic mast. A storage box, an air pump and an electromotor are arranged in the base. The storage box is connected with the spray pipe through a first pipeline, and the air pump is connected with the spray pipe through a second pipeline. The first pipeline is provided with a first electromagnetic valve. The second pipeline is provided with a second electromagnetic valve. The spraying system is simple in structure and convenient to operate; the sprayer can reach different heights through the lifting rod, the sprayer can be quickly moved to any position around a workpiece by means of controlling the mechanical arm, and therefore the spraying system can meet the spraying requirements of different positions of the workpiece at different height positions, and then the workpiece is sprayed in an omni-bearing manner; and the spraying effect is remarkable, and manual climbing spraying work can be completely replaced.

The invention provides a trusted kernel-based anti-attack data processor. The data processor comprises a trusted kernel exception vector table used for providing a processing entry of kernel switching, a trusted kernel stack pointer register used for storing a trusted kernel stack pointer pointing to a trusted kernel stack space, and a trusted scene located in the trusted kernel stack space and comprising a program state register used for storing an initial kernel flag bit of the kernel switching, a program pointer and a universal register. When the data processor executes the kernel switching from a non trusted kernel to a trusted kernel, the trusted kernel is addressed to the processing entry of the kernel switching and the switching is executed. According to the processor, a bottom software protection mechanism can be provided for the switching entry of the trusted kernel, so that the switching of the trusted kernel and the non trusted kernel is securer.

The invention relates to an operation method of a bagged cement or fly ash unpacking and conveying system. The bagged cement or fly ash unpacking and conveying system controls an air supply system, a material storage system, an axial flow fan, a dust collector, a double-bin pump, an unpacking machine and a belt conveyor to sequentially run by utilizing an automatic control program. The operation method comprises the following steps of: transmitting bagged cement or fly ash through the belt conveyor to a sliding plate with an angle of 45 degrees, sliding down along the sliding plate depending on the gravity, cutting off a package bag by a blade in a sliding process, enabling a cut broken bag and cement or fly ash to slide into a rotary drum screen to be screened, outputting the cement or the fly ash falling down through the rotary drum screen by a spiral conveyor, catching dust generated in a bag breaking process by a cloth bag type dust catcher, shaking off the dust into the spiral conveyor, enabling the dust to flow into the double-bin pump through a forked funnel, and conveying the dust into a material storage pot to be stored through a pneumatic conveying pipe. The bagged cement or fly ash unpacking and conveying system disclosed by the invention is of an integral structure, circularly works by utilizing the vertical double-bin pump, realizes the continuous operation of an unpacking and conveying system, and has the characteristics of high work efficiency, reliability in operation, high automatic degree and good environmental friendliness.

The invention discloses a small aircraft fuel tank draining valve switch. The switch comprises a shell, a base which passes on the shell, a valve core which is arranged on the base and a pressure bolt with an axial through hole in the middle, wherein the valve core is cylindrical, the lower part of the valve core is a conical thimble, the thimble extends into the through hole, a shaft shoulder is arranged on the valve core, a sealing ring capable of preventing oil leakage is arranged between the shaft shoulder and the upper end surface of the pressure bolt; the valve core passes through the middle of the base, a first spring is sleeved on the outer part of the valve core, and the lower part of the first spring is arranged on the shaft shoulder. The thimble is arranged on the lower part of the valve core, the through hole is arranged in the middle of the pressure bolt, and the first sealing ring is added. In the prior art, the bolt should be unscrewed to drain fuel, and in the invention it is only necessary to use a tool to jack up the thimble, so that the fuel is drained through the bolt through hole, the thimble is loosed, and the draining valve is closed. The draining valve switch is safe and reliable, is good in reliability and convenient to operate, and the maintainability and safety of aircrafts are greatly improved.

The invention discloses a method for pre-authentication and pre-configuration, and a system thereof. The system for pre-authentication and pre-configuration comprises a current access point and a candidate access point located in different subnets, and also comprises a first virtual terminal located in the current access point and a second virtual terminal located in the candidate access point, the first virtual terminal and the second virtual terminal communicating through an User Datagram Protocol (UDP) channel. The system also comprises a candidate access point which belongs to a different domain with the current access point, a third virtual terminal located in the candidate access point, a first virtual server in a same domain with the current access point and a third virtual server in the same domain with the candidate access point, the first virtual terminal, the first virtual server, the third virtual terminal and the third virtual server communicate with each other through the UDP channel. Through using virtual terminals and / or virtual server to send information related to the pre-authentication and the pre-configuration in the UDP layer, the method enables switches among different subnets in the same domain, and even among different domains.

The invention discloses a self-powered automatic switching and closing high-voltage control system, which comprises a main power supply, a spare power supply and a high-voltage cabinet control circuit, wherein a self-powered device is arranged between the main power supply and the spare power supply, and the self-powered device comprises main and spare direct-current power supply branches; the main and spare direct-current power supply branches comprise main and spare voltage transformers connected in parallel with the wire inlet ends of the main and spare power supplies respectively, the output ends of the main and spare voltage transformers are connected with main and spare middle isolating transformers respectively, the output end of the main middle isolating transformer is connected in parallel with coils of a main rectifying electric bridge and a direct-direct switching relay at the same time, the output end of the spare middle isolating transformer is connected with a spare rectifying electric bridge, and the output ends of the main and spare rectifying electric bridge are connected with the power supply input ends of the high-voltage cabinet control circuit and an automatic switching and closing device through contacts of the direct-direct switching relay. The system not only can provide uninterrupted power supply for the high-voltage cabinet control circuit, but also can realize automatic switching of the main and spare power supplies.

The invention relates to an STA roam switching method when WPI is finished by AC in a convergence type WLAN and a system thereof. The method comprises the steps as follows: 1) site STA is re-relevantly connected with an access controller (AC) by a target wireless terminal point (WTP); 2) the AC notifies the relevant WTP to delete the site STA; and 3) the AC notifies the WTP to add the site STA. In the switching process of STA, The invention can realize STA addition and STA deletion operations between AC and WTP based on CAPWAP control messages, can safely and fast realize site STA switching among WTPs under the same AC.

The invention belongs to the control method field, and specifically relates to a hydraulic static force loading test control method. The invention provides a hydraulic static force loading test control method. During the static force loading test process, manual and automatic switching of the corresponding control mode can be performed according to the specific situation; and switching between two control modes: the force control mode and the position control mode, is safe and reliable and is easy for implementation; and the impact response of a hydraulic cylinder during the process of switching the different control modes can be controlled, so that the work efficiency is improved.

The invention provides an automatic switching method and system. The automatic switching method comprises the steps that the automatic switching device monitors the service state of an application server in real time; when the automatic switching device monitors that the application server stops providing the service for a client side, the automatic switching device sends a switching instruction to the application server and sends a notification message to a standby server, wherein the switching instruction is used for switching a current configuration option, and the notification message is used for switching the current configuration option; the standby server switches the current configuration option to a first preset configuration option according to the notification message and provides the service for the client side, wherein the first configuration option is used when the application server provides the service for the client side. According to the automatic switching method and system, the number of system devices is reduced, the complexity degree is reduced, the switching can be automatically completed, the switching process is efficient and safe, and the working efficiency is improved.

The invention relates to a blind area intelligent auxiliary vehicle-mounted system applied to a commercial vehicle. The blind area intelligent auxiliary vehicle-mounted system applied to the commercial vehicle comprises four or more than five blind area camera modules mounted on the external side of the vehicle and used for shooting the surroundings of the vehicle; the blind area camera modules are one of the following two combinations; one combination is that the blind area camera modules comprise a right front camera and a rear U-shaped shooting system, wherein the right front camera is mounted on the external side of the right rear part of the vehicle and used for shooting the right front blind area D of the vehicle; the rear U-shaped shooting system comprises a left rear camera, a right rear camera and a rear middle camera, wherein the left rear camera is mounted on a left rear-view mirror and used for shooting the left rear blind area G of the vehicle, the right rear camera is mounted on a right rear-view mirror and used for shooting the left area blind area J of the vehicle, and the rear middle camera is arranged in the center of the rear part of the vehicle and used for shooting the rear blind area F of the vehicle. The blind area intelligent auxiliary vehicle-mounted system applied to the commercial vehicle has the advantages of reasonable design, compact structure andconvenient use.

The invention discloses a wheeled-leg hybrid mobile robot. The wheeled-leg hybrid mobile robot comprises a robot body, a plurality of mechanical legs, a plurality of wheel parts, a power source system for providing power for the mechanical legs and the wheel parts, a control device used for controlling the mechanical legs and the wheel parts to be switched and to move, and a shell mounted on the robot body, wherein the multiple mechanical legs and the wheel parts are independently mounted on the robot body; the robot body comprises an upper layer plate support, a lower layer plate support and a connecting frame connecting the upper layer plate support with the lower layer plate support; the power source system is mounted on the upper layer plate support; the multiple mechanical legs are distributed and mounted on the edges of the upper layer plate support; the multiple wheel parts are distributed and mounted on the periphery of the connecting frame; each mechanical leg is provided with at least three mechanical grippers; and the free end of each mechanical gripper can approach or go away from the central line of the robot body independently, and the task for gripping spherical or irregular objects is completed through mutual collaboration. The robot can adapt to various terrain environments by utilizing the two different moving modes of the mechanical legs and the wheel parts to the greatest extent, and can switch the different moving modes rapidly and safety through a parallel-connected control system.

The invention relates to an electric power equipment cabinet. The electric power equipment cabinet comprises a cuboid cabinet framework established by angle irons, wherein front and back sides of the cabinet framework are respectively provided with a front door and a back door which can be opened both, other sides are surrounded by sheet materials to form cabinet wall boards, surfaces of the front door, the back door and the cabinet wall boards are coated with anticorrosion coating layers, and edges are provided with foaming glue. Compared with the prior art, the electric power equipment cabinet has advantages of firm structure, non-easy damage and good security.

The invention discloses an unmanned logistics vehicle control method, device and system and a readable storage medium. Comprising the following steps that vehicle position information and driving area information are obtained, and the mutual relation between the vehicle position and a driving area is judged according to the vehicle position information and the driving area information; and switching the working mode of the unmanned logistics vehicle according to the mutual relation between the vehicle position and the driving area. According to the invention, safe and reliable switching in the automatic driving mode switching process of the vehicle is realized.

A file is transferred directly between a parent magnetic-disk device and a child magnetic-disk device. In one embodiment, a parent magnetic-disk device has a host-mode execution program, whereas a child magnetic-disk device is capable operating in a device mode as is the case with an ordinary magnetic-disk device. The parent magnetic-disk device has an operating-mode-setting unit including a special-purpose jumper block. An MPU employed in the parent magnetic-disk device executes the host-mode execution program to put the parent magnetic-disk device in a host mode. At an activation time, the MPU refers to the logic of the special jumper block to start an operation in the host mode. The MPU controls the parent magnetic-disk device to directly transfer a file to the child magnetic-disk device. Thus, the file can be transferred between the parent and child magnetic-disk devices without intervention by a host computer.