120results about How to "Not easy to expose" patented technology

The invention relates to a micro-strapdown altitude heading reference system and a working method of the micro-strapdown altitude heading reference system. The system comprises a data acquisition module, a data processing resolving module and a peripheral communication interface module, wherein the data acquisition module integrates a three-axis gyroscope, a three-axis accelerometer, a three-axis magnetic resistance sensor and an SPI (Serial Peripheral Interface) into an integrated micro-electronic mechanical system sensor; the data processing resolving module adopts a 32-bit ARM (Advanced RISC Machine) microcontroller; and the peripheral communication interface module consists of a serial port level switching chip, an RS-232 interface, a CAN (Controller Area Network) transceiver and a CAN interface. The working method of the system comprises the working steps as follows: the system is electrified and initialized; the system is self-tested; a magnetic field is self-calibrated; initial alignment is conducted; measured attitudes are combined: resolving the information of attitude headings according to initial three-dimensional altitude and altitude resolving algorithm of the strapdown altitude heading reference system, and resolving the three-dimensional magnetic altitude angle according to the compensated magnetic field information and acceleration information, conducting the information merging algorithm and finally obtaining the stable altitude heading reference information; and the altitude heading reference information is sent to application equipment.

The invention relates to a foreground and background separation-based image encryption method and decryption method. According to the foreground and background separation-based image encryption method, an image to be encrypted is divided into arbitrarily-selected foreground areas and background areas; encryption with different intensities are performed on arbitrarily-selected critical areas and other areas in the image, and therefore, emphasized protection can be provided for the critical areas selected from the image, and sensitive areas in the image has little possibility of being exposed; and high-intensity encryption can be performed on any irregular sealed communicated areas selected by a user, and ordinary encryption is performed on other non-critical areas; and the encryption method is closely related to key parameters given by the user, and is closely related to the plaintext of the image to be encrypted and selected irregular sealed communicated foreground areas, and therefore, a whole encryption process is extremely sensitive to the initial keys and parameters of the user, the plaintext image of the image to be encrypted and the irregular foreground areas.

The invention discloses a direction finding-based passive underwater acoustic positioning method. The method includes the following steps that: a single sound source arranged on the seafloor transmits positioning signals, transponder arrays arranged on the stem and stern of an AUV (Autonomous Underwater Vehicle) receive sound source signals; the phase difference of two transponders on each array is calculated; an angle between the connection line of the seafloor sound source and the stem of the AUV and the hull of the AUV and an angle between the connection line of the seafloor sound source and the stern of the AUV and the hull of the AUV are obtained; the relative position information of the AUV and the sound source can be obtained; and the current geodetic coordinate of the AUV can be obtained through coordinate transformation. According to the method, positioning is performed through only using the phase difference information, and therefore, direction finding can be achieved, distance errors caused by the irregular propagation of sound velocity in water can be effectively avoided, and positioning accuracy can be improved; the transponders passively receive the acoustic signals, so that the AUV does not need to float to the surface of the water for position updating, and therefore, the AUV is unlikely to expose its position, and concealment and safety are improved; and the transponders are placed on the AUV, so that a data communication problem which appears when the transponders are conventionally placed at the seafloor can be avoided.

The invention relates to a multi-functional machine for steamed stuffed buns. The machine comprises a frame, a flour discharging device and a stuffing discharging device which are arranged on the frame, and also comprises a mobile sliding table arranged on the frame, a mounting plate arranged on the mobile sliding table, a dough blank lower die arranged on the mounting plate, an extrusion moldingmechanism, and a steamed stuffed bun sealing mechanism used for sealing steamed stuffed bun wrappers; the dough blank lower die comprises a movable bottom plate which is used for sealing the bottom opening and can open and close; and the mounting plate is provided with a movable bottom plate mounting cavity used for mounting the movable bottom plate and a steamed stuffed bun falling outlet communicating with the bottom of the dough blank lower die. The machine for steamed stuffed buns further comprises a movable bottom plate opening-closing device which controls the opening and closing of themovable bottom plate by utilizing the movement of the mobile sliding table, and comprises a plurality of steamer baskets which are used for receiving steamed stuffed buns falling from the dough blanklower die. According to the invention, the prepared steamed stuffed buns are uniform in wrapper thickness, stuffing is not easy to expose, stuffing filling efficiency of wrappers is high, the moldingeffect of the steamed stuffed buns is good, and after molding, the steamed stuffed buns can be placed into the steamer baskets by the machine instead of man power, and the machine is low in artificialintensity and high in working efficiency.

The invention relates to a safety communication method based on a dynamic gateway. In the safety communication method, a distributed network structure is established; nodes in the network are all in parallel structures; a physical network for the communication between nodes of a wireless sensor network is formed into a logical network for the communication between domains so that network communication between the domains is realized; the domains are areas formed by all the nodes within a management range of key nodes and comprise council nodes, key nodes, dynamic gateway nodes and common nodes, wherein the dynamic gateway nodes are used for realizing inter-domain information retransmission; the key nodes are nodes voted by a council and used for inter-domain and intra-domain network data retransmission so as to realize network communication; the council nodes store master key information and collaboratively manage the key distribution of the nodes of the network, and a set of the council nodes is called council; and the council is used for realizing the information management of intra-domain and inter-domain nodes so that a safe communication process taking the key nodes as a center is realized.

The present invention discloses a passive underwater sound positioning method based on moving a time window periodically. The method is composed of a strapdown inertial navigation system (SINS), a single hydrophone (receiver) at the bottom of an autonomous underwater vehicle (AUV) and a seafloor single hydrophone (band sound source), adopts a time window model which moves based on the cycle of an ultrasonic wave sent out by the seafloor hydrophone, and comprises the steps of carrying out the generalized cross correlation on the sound source signals received when the AUV is located at different positions in a time window to obtain the delay inequality, and then calculating a time window internal AUV multi-point model to obtain the latest position coordinate of the AUV. According to the present invention, by calculating the time window internal AUV multi-point model, the AUV does not need to navigate too far, so that a positioning error of an inertial navigation system which accumulates along with the time continuously is reduced effectively. According to the present invention, the AUV does not need to emerge from the water to update the position, does not need the digital communication, and receives an ultrasonic signal passively, so that the position of the AUV is difficult to expose, and the invisibility and the safety of the AUV are improved.

The invention discloses a manufacturing method for a USB series change-over offline. The manufacturing method comprises the steps as follows: two ends of a wire are respectively connected with a plug to form a change-over line semi-product; the change-over line semi-product is placed in a first shaping model to achieve primary injection molding, so that a semi-finished product of injection molding is obtained; the structure of the upper part of the product is shaped by an upper mold, and a lower part of the product is shaped by the lower mold of the model, which is an inner structure of a fixing wire; the electric property and the appearance of the injection semi-products are detected; detected and qualified injection molding semi-products are placed in a secondary shaping mold to achieve secondary injection molding, the upper mold of the model is matched with the structure of the upper half part of the primary molding product, a primary molding inner structure is coated by a lower mold injection molding , the morphological structure of the lower part is shaped, and the product with overall morphological structure is obtained; and the electric property and the appearance of the product are detected, qualified products are packaged and placed in a storehouse. According to the invention, a core wire can not expose outside the coating, is more perfectly matched with casings of power supplies or electric appliances, and is more handsome and simple.

The invention discloses an automatic-stuffing food forming machine for a clystering wrapper. The automatic-stuffing food forming machine comprises a rack, wherein the rack is provided with a stuffing squeezing feeding mechanism, a spiral wrapper extruding mechanism, a wrapper discharging barrel and a wrapper discharging disk; the wrapper extruding barrel is internally provided with a stuffing pushing cavity; the stuffing pushing cavity is internally provided with a piston rod; the cavity wall of the stuffing pushing cavity is provided with a material inlet which is communicated with the stuffing squeezing feeding mechanism through a stuffing connecting pipe; a wrapper extruding discharge hole is provided with a cut reforming knife; the cut driving machine drives the cut reforming knife. According to the technical scheme, a certain cavity wrapper is remained at the joint of the wrapper and the stuffing during cutting, so that the wrapper can not be stuffed easily after the product is cut off, the seal is firm in bonding and the reforming is easy, and thus the appearance of the product is beautiful, clean and tidy; the product can not easily crack to expose the stuffing during reprocessing; the product yield is improved, in the product appearance is good and the automatic-stuffing food forming machine is convenient to reprocess; the devices of the machine are low in cost and high in efficiency and are capable of saving time and labor, so that a reliable guarantee for automatic and continue production can be increased.

The invention relates to the technical field of macromolecule materials and in particular to a PPO/LCP (poly phenylene oxide/liquid crystal polymer) composite material and a preparation method thereof. The composite material comprises the following raw materials in parts by weight: 30-70 parts of a liquid crystal polymer, 10-30 parts of polyphenyl ether, 10-20 parts of a short glass fiber, 10-20 parts of an inorganic filler, 2-8 parts of a compatilizer, 0.1-0.5 part of an antioxidant and 0.5-1 part of a lubricant. The composite material provided by the invention is good in high temperature resistance, good in size stability and applicable to manufacturing of small-size electronic appliances.

The embodiment of the invention provides a video flow address authentication method and device. The authentication method comprises the steps of: obtaining first information used for authentication; obtaining a first authentication value based on the first information used for authentication and a pre-received LUA script, wherein the LUA script is pre-sent to a client side by a server; and the LUA script includes a video flow address encryption algorithm in advance; and, sending the first information used for authentication and the first authentication value to the server, so that the server determines a second authentication value through the encryption algorithm and the first information, and judging whether the first authentication value is matched with the second authentication value or not, wherein when the first authentication value is matched with the second authentication value, the client side passes video flow address authentication. By means of the video flow address authentication method and device provided by the invention, the technical problem that the video flow address authentication method in the prior art has relatively low security can be solved.

The invention provides an adjustable glaucoma drainage tube.The adjustable glaucoma drainage tube comprises a hollow wide rubber tube arranged close to the equator portion of an eyeball, a movable inner core and a thin drainage tube body.Inner tubes with the same length are arranged in the hollow wide rubber tube in the length direction of the hollow wide rubber tube.Several micropores perpendicular to the inner tubes are formed in the wall of the hollow wide rubber tube to make the inner tubes communicate with the outer portion of the hollow wide rubber tube.The tail end of the thin drainage tube body is communicated with the inner tubes of the hollow wide rubber tube, and the front end of the thin drainage tube body is inserted in an anterior chamber.The front end of the movable inner core swells to prevent aqueous fluid from continuing to be drained to the far ends of the inner tubes of the hollow wide rubber tube.After an operation, the length of a cavity in the front end of the hollow wide rubber tube is adjusted by adjusting the position of the movable inner core, and then the aqueous fluid drainage volume is adjusted; the movable inner core is pulled out to increase the volume of the aqueous fluid drained into inner cavities of the hollow wide rubber tube, and the intraocular pressure of orbital tissue is reduced; when the movable inner core is pushed to the near end, the volume of the aqueous fluid drained into the inner cavities of the inner tubes is reduced, and then the intraocular pressure is increased.According to the device, the aqueous fluid drainage volume can be adjusted according to clinical needs after the operation, half quantitative adjustment can be carried out, and therefore the purpose of adjusting the intraocular pressure is achieved.

The invention discloses an oil tank reinforced earth protective body and a construction method of the oil tank reinforced earth protective body. The oil tank reinforced earth protective body comprises a foundation and a main reinforced earth protective body. The main reinforced earth protective body is formed by alternately press-fitting geogrid layers and packing layers. One-way geogrids are arranged around an oil tank. The one-way geogrid on the lower layer is connected with the one-way geogrid on the upper layer in a tensioning mode through a connecting bar. Earth bags are stacked on the inner side of the one-way geogrid on the lower layer for compaction and press the one-way geogrid on the upper layer. Turf is wrapped on the sides, facing the outer portion of a wall, of earth bags on the outer side of the main reinforced earth protective body. One or two layers of two-way geogrids are arranged on the top of the oil tank. The two-way geogrids are filled with packing in a layered mode. Turf or grass seeds overspread the two-way geogrid on the uppermost layer. According to the oil tank reinforced earth protective body, by the adoption of a flexible geogrid reinforced structure, the problems that land is occupied and earthing can not be conducted during excavation and transportation of large-sized earth rock through a traditional buried oil tank are solved, and meanwhile the oil tank reinforced earth protective body has the advantages of being environmentally friendly, hidden, disguised, not prone to exposure, low in construction cost and the like.

The invention discloses a cleaning room explosion venting curtain wall. The cleaning room explosion venting curtain wall is characterized in that the cleaning room explosion venting curtain wall comprises an explosion venting plate and a curtain wall framework, and the explosion venting plate comprises fireproof heat-preservation rock wool and metal plate bodies arranged on the two sides of the fireproof heat-preservation rock wool; explosion venting window sashes are arranged in the middle of the explosion venting plate at intervals, hinges are arranged on the explosion venting window sashes, and the explosion venting plate is fixed onto the curtain wall framework through the hinges and explosion venting bolts; and the upper ends of the explosion venting window sashes are connected with the hinges, the lower ends of the explosion venting window sashes are fixed to the curtain wall framework through the explosion venting bolts, when explosion pressure reaches the set explosion venting pressure, spacers at the explosion venting bolts are damaged, the explosion venting window sashes rotate around the upper ends to be started so as to release the explosion pressure. According to the cleaning room explosion venting curtain wall, the inlaid curtain wall framework is adopted, exposure of a keel or purlins in the prior art is avoided, the beautiful effect is achieved, and the requirement of cleanliness of a cleaning room is met.

The invention provides a multi-doped graphene composite nano material and a preparation method and application thereof. The method comprises the steps that dispersion liquid of graphene oxide, urea, pyrophosphate and silicon dispersion liquid, a selenium hydrazine hydrate dispersion liquid, a sodium molybdate saturated aqueous solution and the like serve as raw materials to realize multi-doping ofnitrogen, phosphorus, silicon and molybdenum selenide to graphene, and the obtained multi-doped graphene composite nano material can improve the reaction dynamics of carbon, provides more active sites for energy storage, has excellent visible light absorption performance, can fully utilize sunlight to carry out photocatalytic degradation on environmental pollutants, and has good photocatalytic performance. After heteroatoms are doped, the reactivity of the graphene oxide or the graphene is improved, so that further doping of the residual heteroatoms is facilitated; moreover, the interaction among the heteroatoms further improves the doping stability.

The invention provides a comprehensive detection device which comprises a spherical shell, an upper supporting plate, a lower supporting plate, a connecting rod, an image sensor, an image sensor support, a direction sensor, a signal sender, a power source, a driving mechanism, a mounting flange, a base and a conductive sliding ring. The comprehensive detection device is small in size, easy to carry, capable of performing comprehensive monitoring, not prone to being exposed, and beneficial to secretly monitoring an emergency site.

The invention discloses an anti-condensation dual-power switch cabinet. The device comprises a box body, an arc-shaped rain baffle, a dehumidifying and drying assembly, an air inlet, a filter screen,a box door, a spring bolt, a fixing plate, a mounting groove, a lock body, a sliding groove, a baffle and an air outlet; a rotating motor is mounted on the middle inner wall of the top end of the boxthrough bolts; one end of an output shaft of the rotating motor is fixedly sleeved with fan blades; electric heating plates are symmetrically and fixedly installed on the inner walls of the top ends of the box body located on the two sides of the fan blades , ventilation plates are fixedly installed on the inner walls of the two sides of the box body located below the electric heating plates , ventilation holes are distributed in the outer walls of the top ends of the ventilation plates in a penetrating mode, and air inducing grooves corresponding to the ventilation holes are distributed in the inner walls of the two sides of the box body. The dehumidifying and drying assembly is simple in structure and convenient to operate, the service life of the switch cabinet is prolonged, safety accidents are not likely to happen, the lock body can be effectively protected through the baffle, the service life of the lock body is prolonged, and the safety of the switch cabinet is improved.

The invention discloses a storage battery cover structure which comprises a battery cover body, wherein a plurality of sensor mounting grooves for accommodating sensors are formed in the battery cover body, and battery terminal mounting holes are formed in the bottoms of the sensor mounting grooves; a battery management module mounting groove is formed in the battery cover body and communicated with the sensor mounting grooves. According to the storage battery cover structure, the sensors and a storage battery management module are all embedded in the storage battery cover, so as to reduce the covering space, in an accommodating space of an electric vehicle, of the sensors and the storage battery management module. Moreover, wires are pre-buried in the storage battery cover and are not easy to loose, thereby facilitating the taking of the storage battery.

The invention discloses a high-speed frequency hopping synchronization method which does not rely on an external clock reference. A three-level searching structure is adopted; various levels of frequency hopping synchronization indicate next-level frequency points, so apriori information is provided for the next-level frequency points, and efficiency of next-level frequency hopping synchronization capturing is improved; searching is performed on a limited frequency point set in the first-level frequency hopping synchronization, and, compared with full-frequency-band blind searching, the searching can effectively shorten searching time; the second-level frequency hopping synchronization adopts reasonable-number limited frequency point sets. So a characteristic of frequency point randomness is presented, and the complexity of implementation is considered at the same time; the third-level frequency hopping synchronization can achieve synchronization of a frequency hopping pattern and receiving time at the same time; synchronization sequences carried by the various-level frequency hopping synchronization frames are preferably sequences having good related characteristics, and then efficiency of synchronization detection is improved; and, compared with the prior art, the high-speed frequency hopping synchronization method does not need an accurate clock to control time of both sides, has good concealment performance and short waiting time, and can guarantee precision of the synchronization capturing.

The invention discloses a wire harness mounting structure, a sliding center console and a control system thereof, wherein, the wire harness mounting structure comprises a wire harness and a wire harness rail; the wire harness rail is arranged in a cavity between two guide rails of the sliding center console in a vehicle body. Also included are a plurality of sliders through which the wire harnessis connected to the wire harness rail, at least a portion of the sliders being slidable along the wire harness rail, and the wire harness being capable of collapsing or unfolding within the cavity. Awire harness mount structure provided by that invention is characterize in that the wire harness is accommodated in a cavity between two guide rails of a sliding center console through a wire harnessrail and a slide block, and when the sliding center console slides inside a vehicle body, the wire harness can be contracted or expanded in the cavity, the wire harness is not easy to be exposed, andwire harness damage in the sliding process can be avoided to a large extent.

The invention provides a preparation method of instant yolk powder. The method comprises the following steps of: (a) mechanically dispersing yolk solution; (b) adding phospholipase A2 to the yolk solution, wherein the weight measurement ratio (g/ml) of yolk solution to phospholipase A2 is 100:(0.01-0.05); and (c) carrying out drying treatment. The preparation method has the beneficial effects that by adding the phospholipase to hydrolyze phospholipid in the yolk to form lysophospholipid, the emulsion stability and emulsion heat stability of the yolk powder are improved; the treated yolk solution is subjected to spray drying to prepare the yolk powder with good solubility and good emulsion stability; and after the granulation process, the solubility, dispersibility and fluidity of the yolk powder are enhanced.

The invention relates to the field of medical treatment, in particular to a medical waste classification and recovery device for a cardiovascular department. The closing of the device can be completedthrough a closed frame combination body to prevent waste in the device from being exposed. The medical waste can be crushed through an extruding and crushing combination body, and the crushing effectof the extruding and crushing combination body can be adjusted. The transportation of the medical waste can be realized through an inner end transportation combination body. The medical waste can beclassified through a separation combination body. The medical waste classification and recovery device comprises the closed frame combination body, the extruding and crushing combination body, a buffering combination body, the inner end transportation combination body, an auxiliary fixing frame and the separation combination body. When a pushing device is pushed by elastic force of a diving springand slides to the middle end of a middle end sliding column, the pushing device automatically slides to the upper end of the middle end sliding column under the action of the component of acting force of an elastic force of the driving spring in the vertical direction, and meanwhile, a closing plate is more stably opened and closed under the action of the component of acting force of an elastic force of the driving spring in the vertical direction.

The invention discloses a high-elasticity extinction TSF composite fiber chip fabric which is characterized in that the high-elasticity extinction TSF composite fiber chip fabric is made through extrusion, metering, yarn recombination, filament spraying, cooling, oiling, stretching and shaping, and winding of an extinction PTT constituent melt and an extinction PET constituent melt; the ratio of the extinction PTT constituent to the extinction PET constituent is 6:4-4:6; the extinction PET constituent contain PET and ash; the ratio of PET to ash is 98:2; the extinction PTT constituent contains PTT and ash; and the ratio of PTT to ash is 98.5:1.5. According to the invention, elasticity of the high-elasticity extinction TSF composite fiber chip fabric can be enhanced; certain light shielding effects can be achieved; production efficiency and production quality can be increased; and production cost can be reduced.

The invention discloses a back light camera which comprises a PWM (Pulse Width Modulation) signal generating circuit, a light source driving circuit and a light source switch induction control circuit, wherein the light source switch induction control circuit is respectively connected with the PWM signal generating circuit and the light source driving circuit; the PWM signal generating circuit is connected with the light source driving circuit; and the light source driving circuit further comprises a light source device which is used for emitting at least one light beam with a wavelength being 910-980 nanometers to an imaged object. The back light camera provided by the invention is ultra-long in service life which reaches one hundred thousand hours; and meanwhile, an LED (Light Emitting Diode) serves as the light source, so that the back light camera has the characteristics of convenience in operation, low energy consumption, environmental protection, and the like, and the cost is effectively lowered; the wavelength of the light beam emitting to the imaged object by the LED light source is 910-980 nanometers, and meanwhile the over exposure problem is solved; and the light is not reflected by the face of a shot person, the facial features are clearly distinguished and an image is free from white aperture, so that a monitored target is clearly displayed during a night monitoring process, the invisibility is strong and a monitoring position is difficult to be exposed.

The invention relates to radio monitoring technologies, in particular to a radio concealment monitoring method and a portable radio monitoring system, wherein the portable radio monitoring system adopts the radio concealment monitoring method. First of all, monitoring parameters and direction-finding parameters are set through a user interface, afterwards the portable radio monitoring system monitors operation, and carries out direction-finding actions in an automatic sensing mode, and finds out direction-finding tasks through a direction-finding sensing software module, and then carries out direction-finding calculation on monitoring data through a direction-finding calculation software module to obtain direction-finding results, and at last a broadcast direction-finding result software module converts the direction-finding results into voice data, sends the voice data to a sound card, and broadcasts the voice data to an operator through an earphone. The entire monitoring and broadcasting process is good in imperceptibility, and a purpose of concealment monitoring can be achieved.

The invention provides an ancient tree protection method and an ancient tree protection system and belongs to the technical field of building construction. The ancient tree protection method comprises a supporting structure is arranged around an ancient tree; a foundation pit is excavated in the outer side of the supporting structure, so that part of outer side of the supporting structure is exposed out of a soil body; steel bar net hanging and concrete spraying facing treatment is conducted on the soil body exposed on the outer side of the supporting structure; periodic watering processing is conducted on the soil body defined by the supporting structure; plants are planted on the surface of the soil body defined by the supporting structure. By adopting the method, the ancient tree is protected, a good environment is provided for growth of the ancient tree, it can be ensured that the ancient tree obtains sufficient moisture and nutrients in the growth process, the root system of the ancient tree is not easily affected, and the ancient tree can normally grow.