53results about How to "Full security" patented technology

The invention relates to the technical field of lithium batteries, in particular to a preparation method of a power lithium battery diaphragm. The preparation method comprises the following steps of dissolving, assistant adding, extruding, sheeting casting, diaphragm forming by drawing, shaping and the like, and a polyolefin resin microporous membrane, namely a lithium battery diaphragm, is formed finally. The diaphragm prepared by the method is 10-25 mu m thick, has a preferential porosity being 40-70%, and 105 DEG C heat shrinkage rate below 5%. The prepared diaphragm has the advantages of low closed-pore temperature, high fusing temperature, low heat shrinkage rate, good mechanical properties and has excellent safety performance when used as a power lithium battery diaphragm. In addition, the power lithium battery diaphragm is a polyolefin resin microporous sinlge-layer membrane which has good heat stability after being subjected to process steps such as drawing and shaping.

The embodiment of the invention discloses a method and device for attacking a secret key. The method comprises the steps that the length of an RSA code operation is set to be t, and the RSA code operation is conducted on data through the attacked secret key, so that a first power consumption curve for the attacked secret key to conduct modular exponentiation is obtained; whether the RSA code operation in the first power consumption curve is implemented through hardware or not is analyzed through a simple energy SPA attack/analysis method, if yes, an attack is failed; if not, according to the number of execution times of modular multiplication in the first power consumption curve, a testing secret key is obtained, RSA code operation is conducted on same random data through the testing secret key and the attacked secret key, whether results are identical or not is judged, and if yes, the attack is successful; the RSA code operation is a standard RSA decoding operation or a signature operation which is implemented through modular exponentiation.

The invention discloses a smart Internet of Things communication service system and a smart Internet of Things communication service method. The system comprises: a forwarding layer device and a control layer device, wherein the forwarding layer device comprises: an LNS, a PCRF, and an egress routing device; the LNS accesses a PGW, and the LNS, the PCRF, and the egress routing device are connectedwith each other through a forwarding layer communication link; the control layer device comprises: an accounting server, a policy server, a CRM server, and a certification authentication server, which are in communication connection through the control layer link based on a control management switch; the policy server is in communication connection with the PCRF through the control layer link; the LNS establishes an L2TP VPN channel with the PGW; the CRM performs customer relationship management; the policy server synchronizes and controls the policy configuration of the PCRF; the PCRF records the network call bills of the user equipment based on the configured policy, and controls the network access behavior of the user equipment; the accounting server generates a corresponding traffic bill according to the network call bill recorded by the PCRF; and the certification authentication server performs certification authentication and log recording on the user equipment.

The invention provides a liquefied natural gas pump lifting device which is simple to move and install and easy to maintain and operate. The liquefied natural gas pump lifting device comprises a supporting column which is vertically arranged on the ground or a storage tank at the side of the liquefied natural gas storage tank; a bench top arranged above the supporting column through a rotation part; a cantilever which is arranged above the bench top on one end of the upper part of the supporting column in a manner of extending in a direction roughly parallel to the bench top; and an elevator provided with a pump lifting device capable of moving along the cantilever. All parts except the supporting column can be detached/assembled. Preferably, the elevator of the liquefied natural gas pump lifting device is provided with a non-oil-pressure type overloading detection device.

The invention relates to a safety protection device for a special iron core ejector rod welding machine. The safety protection device comprises a safety light curtain and two light curtain supports. The two light curtain supports are symmetrically arranged on the two sides of the front of the worktable of the rack of the welding machine. The safety light curtain consists of a light transmitter and a light receiver, wherein the light transmitter and the light receiver are arranged on the light curtain supports and face each other. The safety light curtain is connected with the welding head of the welding machine. The light transmitter comprises an elongated plate body and a plurality of infrared transmitters. The light receiver comprises an elongated plate body and a plurality of infrared receivers. By arranging the safety light curtain on the two sides of the rack of the welding machine, when an operator stretches a hand into a movement area, the safety light curtain can automatically sense the hand, the welding head goes back to the original position, the safety performance is improved, and the safety of the operator and equipment is fully protected.

The invention discloses a solar photovoltaic power generation device of a frame through-conductor type, and the device comprises a photovoltaic power generation plate. The top of the photovoltaic power generation plate is provided with an aluminum frame, and the bottom of the photovoltaic power generation plate is provided with an inverter. The top of the photovoltaic power generation plate is provided with a solar cell panel, and the bottom of the photovoltaic power generation plate is provided with a support. The bottom of the support is provided with a support strut, and the top of the support is provided with a fixed groove. One side of the fixed groove is provided with a fixing screw. The top of the solar cell panel is provided with a tempered glass cover plate, and the bottom of the tempered glass cover plate is provided with an EVA filling material. The device provided by the invention is small in investment, is quick in construction, is small in occupied area, is high in photoelectric conversion efficiency, has full cleanness, absolute safety, relative universality, definite long service life, maintenance-free performance, sufficient resources and potential economical efficiency, and is good in application prospect.

The invention provides a system for controlling vehicle entering and leaving. The system comprises a vehicle ID (identification) card, a signal emission base installed inside a vehicle, a reader, a control device connected to the reader and a passgate controlled by the control device. Specifically, the vehicle ID card sends vehicle ID information including vehicle ID data to the signal emission base; the signal emission base sends vehicle ID information and receives characteristic information sent by the reader; the reader sends the characteristic information to a deck emission device and monitors the reception of the vehicle ID information sent by the signal emission base; and the control device controls the rise of the passgate based on a signal from the reader. The invention also discloses a method for controlling vehicle entering and leaving.

The invention discloses a smart lock with voice prompt function. The smart lock comprises a lock body (10) and a prompting device (20) fixedly connected to the inner side of the lock body (10); the lock body (10) comprises a housing (11), a two-dimensional code (12) and a lock cylinder (13), a curved lock bolt (14) and a first elastic member (15). The prompting device (20) comprises a control unit(21), a detecting unit (22) for detecting a state change of the lock body (10), and an alarm unit (23) capable of emitting a voice prompt; the control unit (21), the detecting unit (22) and the alarmunit (23) are electrically connected. When the state of the lock body (10) detected by the detecting unit (22) changes, the control unit (21) drives the alarm unit (23) to issue a corresponding voiceprompt. The invention can effectively prevent the possibility of getting lost caused by that the user's riding deviation is beyond the range of the scenic spot and the possibility of personal injuryaccident, and the smart lock is totally safe.

A processed edge face structure of a laminated film composed of two or more layers comprising a uniaxially or biaxially stretched base film layer and a sealant layer superposed on one side or each side of the base film layer, the structure including one or more layers, e.g., an adhesive layer, an anchor coat layer, and an ink layer, which have been completely prevented from being exposed. Also provided are: a method of edge face processing for producing the structure; a liquid ejection nozzle capable of preventing a filling to be packaged into a flexible packaging bag from coming into contactwith the adhesive layer, etc.; and a process for producing the nozzle. The edge face of the laminated film comprising a base film layer and sealant layers superposed thereon so that the base film layer is sandwiched therebetween is characterized in that the edge face of the base film layer has been covered with the sealant layers by disposing the sealant layers so as to protrude from the edge of the base film layer.

The invention discloses a telescopic variable-angle stair climbing wheelchair, which comprises: a motor, crawler wheels, a level road driving wheel, a first seat balance push rod, a crawler wheel push rod, a level road driving wheel push rod, a seat push rod, a second seat balance push rod, a seat, a main support telescopic push rod, a battery, a level road driven wheel, a level road driven wheel push rod and a main support. The wheelchair is simple and convenient to produce, wherein by adopting the four-wheel-drive four-track driving mode, the speed of going upstairs and downstairs can be more effectively increased on the premise that safety is guaranteed. Due to the scalability and angle variability of the crawler wheels and the connection and rotation characteristics of the seat, the wheelchair is more reasonable and stable in structure, more complete in safety performance and higher in safety coefficient, the front-up and front-down advancing mode is adopted, operation is convenient, and the visual safety sense of a passenger is higher. The wheelchair has the characteristic of simple operation, and is suitable for popularization and application.

The invention provides a safety system of a stereo parking garage. The safety system of the stereo parking garage comprises mobile parking spaces, portals, safety isolating devices, a top platform, a lift car guide rail, a lift car, a horizontal guide rail and a transmission mechanism, wherein the portals are fixed to the mobile parking spaces; each safety isolating device is arranged between the corresponding mobile parking space and the corresponding portal; and the number of the mobile parking spaces is twelve or over, and the mobile parking spaces are of a movable combined structure. By means of the safety system, car owners can go back and forth between the floor and parked cars through an elevator, so that time is greatly saved, the situation that in order to take or place objects, people have to move the cars and consequently various inconveniences are caused is avoided, the car owners can go back and forth between the floor and the cars directly, and efficiency is greatly improved. Meanwhile, safety of all the cars in the stereo parking garage is ensured, the car owners can enjoy the full sense of safety as private parking garages, lawbreakers cannot easily steal any cars parked in the stereo parking garage, and the car owners do not need to worry about that the own cars are scratched but relevant people in charge cannot be found.