41results about How to "The control method is safe and reliable" patented technology

The invention discloses a lockset, an unlocking method, a lockset management center and a control method thereof. The unlocking method comprises the following steps: a lockset information code and a user identity information code are registered in the lockset management center; after the lockset is locked each time, a current display information code is generated and displayed on the lockset; thedisplay information code and the lockset information code are subjected to encryption calculation to obtain a current unlocking cipher; the current unlocking cipher is stored in a storage module of the lockset; when a user needs unlocking, the current display information code and the user identity information code are sent to the lockset management center; the user identity information code is authenticated through the lockset management center; if the information code passes through authentication, the display information code and the lockset information code are subjected to encryption calculation to obtain the current unlocking cipher; and the current unlocking cipher is sent to the user. The lockset, the unlocking method, the lockset management center and the control method are safe and reliable.

The invention discloses a method and a system for controlling a lifter. The method comprises the following steps: a host controller receives control signals sent by an operating board controller, wherein the control signals include handle signals and / or keyboard signals; the host controller judges the control signals and outputs first layer flattening signals to a frequency converter according to a judgment result, wherein the first layer flattening signals comprises automatic layer flattening signals and manual layer flattening signals; the frequency converter outputs a first layer flattening action command according to the received first layer flattening signals, wherein the first layer flattening action command is used for controlling a motor to work. According to the method and the system, the problems that the operation is troublesome, and the structure of a machine is easily damaged because an existing lifter is in shortage of an automatic layer flattening function, and a tractor driver needs to carry out inching adjustment by virtue of a handle in a single manual layer flattening process are solved.

The invention discloses a USB port plugging electron label method and device; the device provides a wireless communication technical method, i.e., an USB port plugging electron label; the method comprises the following steps: sending USB port plugging motions to a reception device and system; recording related operation time. In the prior art, a system host cannot install terminal management software or USB control management software, and paper label and hardware lock cannot provide audit operation time records; the novel method and device can solve said problems.

The invention discloses a wireless single control method for a parking spot lock and the parking spot lock. The control method includes that acquiring authorization codes from a server at a mobile terminal, comparing the authorization codes with a code database in the parking spot lock, if the authorization codes successfully match with the code database, opening the parking spot lock, after the vehicle leaves the parking spot, closing the parking spot lock to realize the garage management and sharing. The parking spot lock comprises a parking spot lock body and a controller, the parking spot lock body is provided with a shell, a U-shaped stop lever, a drive motor and a ratchet wheel mechanism, a rotating shaft is through arranged in the shell in the transverse direction, and two ends of the rotating shaft are connected with the opening end of the U-shaped stop lever; a driven gear firmly sleeves the middle of the rotating shaft, the output shaft of the drive motor is provided with a drive gear, and the drive gear is engaged to the driven gear; at least one limit groove is circularly opened in the rotating shaft, a limit rod is arranged on the inner wall of the shell, and the limit rod matches with the limit groove to realize limit; the parking spot lock is simple in structure, convenient to control and convenient to mount.

The invention discloses a braking force control method for emergency braking of an unmanned vehicle on a dry road, The method comprises the following steps: a vehicle-mounted sensor of an unmanned vehicle reads the braking condition parameters, calculates the actual braking force required according to the above parameters, brakes the required braking force according to a proportional command three-channel ABS anti-lock braking system, and judges whether the actual output total braking force of the ABS system meets the braking demand; the braking condition parameters of the ABS anti-lock braking system are calculated according to the proportional command three-channel anti-lock braking system. If the demand is not met, steering obstacle avoidance is carried out; If it meets the requirements, the on-board sensor is used to obtain new braking condition parameters after 0.5 second to determine whether to continue braking or not; If the braking is required to continue and the current braking force meets the requirements, the current braking force is maintained, and if the requirements are not met, the braking force control process described above is repeated until the braking is completed. The braking force control method is used for autonomous control of an unmanned vehicle during emergency braking, which can make real-time decision of braking strategy according to the conditions of each time of the obstacle, and ensure the safety of the emergency braking process.

The invention relates to a device and method for VOC adsorption and tail hydrogen safety treatment of purge gas of an aromatic hydrocarbon hydrogenation system, which mainly solves the problem of poor safety caused by direct discharge of hydrogenation tail gas in the prior art. The present invention adopts a device and method for VOC adsorption and tail hydrogen safety treatment of the purge gas of the aromatic hydrocarbon hydrogenation system. After the purge gas of the aromatic hydrocarbon hydrogenation system is separated by a gas-liquid separator, the gas phase enters the VOC adsorber, and the purge gas after adsorption is re- Enter the hydrogen processor, and finally meet the standard discharge; the VOC adsorber has activated carbon fibers in it to absorb the aromatics in the exhaust gas. The hydrogen processor adopts a Venturi design, and there is a fire-resistant screen inside. When the gas is discharged, it is sucked by pressure. The air forms a mixing zone at the outlet section, and the outlet of the hydrogen processor is equipped with an ignition head, which automatically ignites when the hydrogen is discharged, and the technical scheme of removing the hydrogen solves the above problems well, and can be used to treat hydrogen-containing purge gas.

The invention discloses a safety circuit of a SIL4 safety level rail vehicle gate controller. The safety circuit of the SIL4 safety level rail vehicle gate controller comprises a safety signal input processing circuit, a dynamic frequency wave generation circuit, an optocoupler isolation driving circuit, a safety signal logic calculation circuit based on SIL4, a transformer circuit and a driving circuit, wherein the output end of the safety signal input processing circuit and the output end of the dynamic frequency wave generation circuit are separately connected with the input end of the optocoupler isolation driving circuit, the output end of the optocoupler isolation driving circuit is connected with the input end of the safety signal logic calculation circuit based on the SIL4, the output end of the safety signal logic calculation circuit based on the SIL4 is connected with the input end of the transformer circuit, and the output end of the transformer circuit is connected with thedriving circuit. The safety circuit of the SIL4 safety level rail vehicle gate controller further discloses a control method of the safety circuit of the SIL4 safety level rail vehicle gate controller, according to the safety circuit of the SIL4 safety level rail vehicle gate controller, a gate is prevented from accidentally being opened, and the SIL4 level requirements can be met.