38results about How to "Vandal resistant" patented technology

An antitheft alarm system for the oil or gas delivery pipeline is composed of a central station and several terminal stations. Said central station consists of display screen, computer, sound-light alarm, interface, radio data transmission module, printer, UPS, and stabilized DC power supply. Said terminal station is composed of audio sensor, amplifier, signal processor, A/D converter, single-chip computer, interface, radio data transmission module, solar battery, etc. It can sense the theft in time to generate audio-video alarm signals, preventing pipeline from being damaged.

The preparation of carbon-carbon composite material belongs to the field of composite material. Timber with special porous structure and chemical components is first pre-treated to form pre-formed template skeleton for carbon-carbon composite material, and through soaking with carbon precursor compound of carbon and subsequent densification and graphitization, the timber has its macro structure converted to carbon-carbon composite material to prepare the carbon-carbon composite material with high comprehensive performance. The carbon-carbon composite material of the present invention has high freedom in design, light weight, ablation resistance, wear resistance, high heat strength, high oxygen resistance and other excellent performance.

The invention provides a cover suitable for product tracing and application method of the cover. The cover comprises a cover body, a fluorescent two-dimensional bar code and a two-dimensional bar code. The fluorescent two-dimensional bar code is arranged on the outer surface of the cover body and corresponds to the cover body in a one-to-one manner. The two-dimensional bar code is arranged on the inner surface of the cover body and is in linkage with the fluorescent two-dimensional bar code. By the adoption of the cover, it can be guaranteed that identification information is collected effectively, and confidentiality, counterfeiting prevention, channel conflict prevention and interaction with consumers are facilitated.

The invention discloses a damage resistant image display screen used for a smart home, comprising a frame, wherein a display screen is arranged at the right side of the frame, a glass sticker is arranged at the right side of the display screen, a sound sensor is arranged at the lower part of the left side of the frame, a displacement sensor is arranged at the upper part of the left side of the frame, a top plate is arranged at the top of the frame, the left end of the top plate extends into a first sliding chute, the first sliding chute is formed in the upper part of the right side of a wall,the wall is arranged at the left side of the frame, a connecting rod is arranged at the right side of the top of the top plate, a rotating shaft is arranged at the upper side of the connecting rod ina penetrating way, a roller sheathes the outer wall of the rotating shaft and the roller and the rotating shaft are molded in an integral way, roller shutters sheathe the roller, one end of the rotating shaft is in transmission connection with the output terminal of a small motor by virtue of a belt, and the small motor is arranged at the left side of the top of the top plate; and a connecting column is arranged at the middle part of the left side of the frame. The damage resistant image display screen used for the smart home is reasonable in structure and easy to use, can intelligently adjustthe height and has a damage resistant function.

The invention discloses an image information encryption and decryption method based on improved Arnold transformation and LSB. The method includes: using the improved Arnold transformation to preprocess an image, and using an LSB algorithm to embed the preprocessed image into a background image to form a new image with the encrypted image. The encryption process mainly includes: calculating the information quantity which can be contained by the background image, inputting a key, using the improved Arnold transformation to preprocess a hidden-information image, saving the size of the hidden-information image, and using the LSB algorithm to embed the hidden-information image into the background image. The decryption process mainly includes: extracting the size of the hidden-information image, using the LSB algorithm to extract the hidden-information image, inputting a key and performing reverse Arnold transformation on the extracted hidden-information image so as to achieve decryption. By the image information encryption and decryption method, information confidentiality is enhanced greatly.

The invention relates to a scanner having functions of digital copyright protection and scan source tracing, comprising: a digital watermark creating module for creating a digital watermark; a discrete cosine transform module for processing scan data to prepare for subsequent watermark embedding; a digital watermark embedding module for embedding the digital watermark into a scan data; and a discrete cosine inverse transform module for hiding the digital watermark. The scan method comprises the following steps of: creating a digital watermark based on the scan associated information as a resource mark; calling the scan data of the discrete cosine transform process, adding the digital watermark into a discrete cosine transform frequency domain space; embedding the digital watermark after the chaotic process into a scan data; and calling a discrete cosine inverse transform to hide the digital watermark.

The invention relates to the technical field of car parking management, in particular to a time-limited parking monitoring and alarming system. The time-limited parking monitoring and alarming systemcomprises a time-limited parking monitoring alarm device, an NVR memory, a central server and a client which are connected with one another in a wired or wireless mode, wherein the time-limited parking monitoring alarm device comprises a shell, an alarming warning light and an alarming loudspeaker are arranged at the upper end of the shell in sequence downwards, and a video monitoring camera and an LED parking time display screen are arranged on the side wall of the shell from top to bottom in sequence. By means of the time-limited parking monitoring and alarming system, roadside parking slotparking conditions can be monitored in real time, and parking time, illegal parking acts and the like of parked cars can be monitored in real time; the time-limited parking monitoring and alarming system is beneficial to encouraging people to drive out of parking slots constantly, parking is regularized as far as possible, the passing speed is improved as far as possible, and the work efficiency of workers is improved as far as possible.

The invention discloses a novel self-adhesive wrapping paper with characteristics of anti-theft property and convenient packaging. The novel self-adhesive wrapping paper comprises a wrapping paper body, wherein the wrapping paper body is prepared by compounding three different materials, and comprises a protection layer, a foaming layer and a self-adhesive layer, and the self-adhesive layer can only adhere itself. According to the present invention, the self-adhesive layer in the designed wrapping paper can only adhere itself and does not adhere other objects, the object is directly wrapped during the packaging, and the wrapping paper compacts the edge, such that the packaging is convenient; and the protection layer on the outer layer has functions of water resistance, compression resistance and the like, the foaming layer on the middle layer has characteristics of easy permeation and easy tearing, only the receiver can tear the self-adhesive layer after the self-adhesive layer on the inner layer is self-adhered, and the foaming layer can be concurrently tore if other people personally tears the self-adhesive layer so as to left the stealing evidence, such that the foaming layer has anti-theft and anti-damage effects.

The invention belongs to the technical fields of an electronic technology and a security protection monitoring technology, in particular to a multi-path cable monitor mainly used for detecting whether a human body enters a security area or whether a secured object is moved or not. The multi-path cable monitor comprises multi-paths of monitoring probes, a DC amplification and acousto-optic alarm circuit, a potential locking circuit, a power supply, a power supply filter circuit and a power supply indicator circuit and is characterized in that a bridge balance circuit is formed by two silicon transistors, four balance arms of a bridge circuit are substituted by four monitoring probes, and a microswitch in each probe is respectively connected in series with a resistor to form a balance arm of the bridge circuit. Once a certain monitoring probe is triggered or security lines are short-circuited or cut off, and the like, the monitoring device immediately alarms in an acousto-optic mode, and the circuit has no memory function so that the state of the bridge balance circuit is broken once an alarm signal is emitted, the potential locking circuit can automatically maintain the working state of the circuit, and an uninvited guest entering the security area can not singly clear the alarm signal.

The invention relates to the technical field of packing boxes for commodities and logistics, in particular to a packing box and a logistics method. The packing box comprises a box body, a password lock and cargoes; a piston cavity, a piston, a spring and a limiting rod are arranged at a shaft core part of a password wheel device, the elasticity Fn of the spring acts on the top of the piston, the air pressure of air inflated into the top of the piston cavity is Pb, and the air pressure of air inflated into the bottom of the piston cavity is Pa; the air pressure of the air and the elasticity meet the condition that Pa>Pb+Fn. The packing box and the logistics method have the advantages that the cargoes are packed into the packing box instantly after leaving a factory, the cargoes in the packing box are not polluted in the transportation process, exchange of the cargoes in the logistics process is avoided, and the packaging box can be opened only after verification is successful. In particular, the packing box has the damage-prevention functions such as the cutting damage prevention function, the electric drill damage prevention function, the pressure damage prevention function and the password trial and error prevention function; it is guaranteed that the cargoes are quality goods, and marketing tracking on the cargoes can be carried out after the cargoes leave the factory.

The invention discloses a high-temperature resistant erosion-resistant carbon fiber composite tube and a preparation method of the high-temperature resistant erosion-resistant carbon fiber composite tube, and belongs to the technical field of composite tubes. The high-temperature resistant erosion-resistant carbon fiber composite tube sequentially comprises an ablation resistant layer, a scouringresistant layer, a high temperature strength layer and a thermal insulation layer from inside to outside, wherein the ablation resistant layer comprises a carbon fiber reinforced carbon matrix composite, a carbon fiber is prepared from a three-dimensional or two-dimensional laminated structure fabric, a carbon matrix is prepared from a carbon prepared through high-temperature pyrolysis of a high polymer material; the scouring resistant layer is prepared from a ceramic matrix carbon fiber or a ceramic fiber reinforced composite; the high temperature strength layer is prepared from a carbon fiber reinforced high-temperature resistant resin composite; and the thermal insulation layer is prepared from a foam matrix reinforced carbon composite. The high-temperature resistant erosion-resistant carbon fiber composite tube is light in weight and good in high temperature resistance and erosion resistance.

An intelligent document monitoring cabinet comprises a document cabinet body, a document inlet-outlet, a video monitoring camera, an alarm lamp, a computer touch screen and a wireless antenna, whereina document placement frame, an electric door assembly, a computer control center, an RFID reader-writer and a manipulator system are arranged in the document cabinet body. The computer control centeris electrically connected with the video monitoring camera, the alarm lamp, the computer touch screen, the wireless antenna, the electric door assembly, a PLC, the RFID reader-writer and an audio loudspeaker respectively. The intelligent document monitoring cabinet is also provided with a facility maintenance and emergency disposal door, a reset key and a power distribution plate. The intelligentdocument monitoring cabinet has the advantages that self-help document putting and safe document taking are achieved by adopting simple inlet-outlet design, ultrahigh-frequency RFID, automatic control, mobile internet, intelligent videos and other technologies; cloud deployment is supported, and remote centralized management is achieved; an alarm function and intelligent self-inspection are adopted; by designing monitoring cabinet partition plates and installing the RFID antenna, it is ensured that an RFID system can read all electronic tags in the cabinet in real time, and remote and real-time document checking is achieved.

The invention discloses a novel security and protection intelligent well lid. The novel security and protection intelligent well lid comprises a well lid assembly, a guiding mechanism, a hydraulic system, a control system and a safety protection assembly. The well liquid assembly is internally provided with the hydraulic system which is in control connection with the control system. The hydraulic system is in driving connection with the guiding mechanism arranged on the well lid assembly. The guiding mechanism comprises a fixed plate fixedly arranged on the same side of the interior of a well base and a movable plate hinged to one side of the bottom of a well lid plate. Vertically-downwards guiding rods are arranged at the two ends of the movable plate, the fixed plate is provided with linear bearings correspondingly matched with the guiding rods, and the lower ends of the guiding rods are sleeved with the linear bearings. A hydraulic rod is connected between the center of the fixed plate and the center of the movable plate. The novel security and protection intelligent well lid solves the problems that opening is not convenient, well lid sealing is not good, intelligent control cannot be achieved, and the press capability is insufficient.

The invention discloses a garbage can with a super-hydrophobic garbage bag. The garbage can comprises a can body; a fastening connection part is arranged on the upper end opening of the can body; thegarbage bag is arranged in the can body; the surface of the garbage bag is coated with a super-hydrophobic layer; a reinforcing edge strip is further arranged on the upper end opening of the garbage bag; the reinforcing edge strip is used for being matched with the fastening connection part; and a saddle weight block is arranged on the bottom of the garbage bag.

The invention relates to an I-shaped-Cantor composite fractal slotted ultra-wideband antenna and a preparation method thereof. The antenna comprises three layers of film substrates. The front side ofthe first film substrate layer is pasted with an inductive radiation patch; a feed radiation patch is pasted on the front side of the second film substrate layer; and an inductive radiation patch is pasted on the front side of the third film substrate layer and a barium titanate sheet is pasted on the backs side of the third film substrate layer, and a permalloy coating is pasted on the back sideof the barium titanate sheet. The inductive radiation patch and the feed radiation patch have I-shaped-Cantor composite fractal slotted structures; the I-shaped-Cantor composite fractal slotted structures are I-shaped fractal slotted structures in a whole; Cantor fractal slotted structures are arranged inside the I-shaped fractal slotted structures. The antenna working stably and reliably have advantages of large performance redundancy, strong anti-interference ability, high radiation intensity, certain anti-destructive property, and powerful ultra-wide band working capability.

The invention discloses a method for realizing quick connection between floating body modules through a small prestressed steel cable tensioning technology. Aiming at solving the problems that a sea level basic layer is large in undulation and large in fluctuation, the method for realizing quick connection of offshore concrete structure modules through a prestressed steel cable tensioning technology is put forward. On the basis, filled caulkings between the concrete modules and the upper parts of two floating bodies are fixed in a bolted connection mode through truss steel beams in an assistedmode, and thus quick and stable connection of the concrete structure modules on the complex sea level with low stability is achieved.