66results about How to "Does not affect signal transmission" patented technology

The invention discloses a matrix switching system and a matrix switching method for switching among multi-format video signals. The system comprises an optical fiber emission convertor, an optical matrix main unit and an optical fiber receiving convertor, wherein the optical fiber emission convertor is used for recognizing and converting the multi-format video signals into unified optical signals, emitting the optical signals to the optical matrix main unit, and receiving reversely transmitted optical signals to form control data; the optical matrix main unit is used for fulfilling conversion and transmission of the video signals, synchronously converting the control data corresponding to the video signal into optical signals in the video signal conversion and transmission process, and reversely transmitting the optical signals to the optical fiber emission convertor; the optical fiber receiving convertor is used for converting the optical signals transmitted by the optical matrix main unit into video signals taking the format of recognizable electrical signals of backward stage display equipment. The matrix switching system and the matrix switching method have the advantages that the signals of the input-output paths are mutually independent, so that when one path of signals get out of order, the transmission of other paths of signals can be prevented from being impacted; meanwhile, the problem that the transmission of the control signals requires a special cable can be solved effectively as reverse data are synchronously transmitted in optical fibers.

The invention relates to a dehydrogenation condensed type optical cable adhesive and a use method thereof. The A component substance of the adhesive is a sizing material obtained by the steps of taking hydroxy-terminated polydimethylsiloxane as a basic polymer, adding polymethyl hydrogen siloxane and fumed silica and mixing evenly; and the B component substance of the adhesive is an organic tin curing agent prepared by dissolving dibutyltin dilaurate in 120# solvent gasoline or petroleum ether. When in use, the A component substance of the sizing material is dissolved in the 120# solvent gasoline or the petroleum ether with the boiling range of 90 to 120 DEG C in advance, then the mixture is coated on the surface of an optical cable by brush coating or dip coating after the solution and the curing agent are mixed evenly, and an optical cable winding is prepared by winding after curing. The adhesive has moderate bonding strength, ageing resistance and high/low-temperature resistance, the inherent shape of the bonded optical cable winding can keep stable in the processes of storage, transportation and paying off, the resistance generated when the optical cable winding is paid off at high speed is also minimum without the deviation of the coils of the optical cable, and the signal transmission of the optical cable is also not influenced.

The invention discloses an amorphous alloy support and a preparation method thereof. The support is made of an amorphous alloy. The relative magnetic permeability of the amorphous alloy ranges from 0.99 to 1.02. According to the support, the Vickers hardness is larger than 350 HV, the tensile strength ranges from 2500 MPa to 3000 MPa, and the elastic limit ranges from 1.5% to 3.0%. The thickness of the support ranges from 0.5 mm to 1 mm. The specific strength of the amorphous alloy support is high, and compared with a conventional crystalline-state metal material of the same system, the strength is higher by two times or above. The amorphous alloy support is subjected to forming processing in a hot pressing forming or casting forming manner according to different amorphous alloy systems, aformed blank part can come into service after being subjected to simple trimming treatment, and the subsequent treatment procedure is simplified.

The invention provides a testability design circuit applied to an anti-fuse FPGA (Field-Programmable Gate Array), and belongs to the technical field of micro-electronics. The testability design circuit comprises a control circuit and at least one switch completed circuit; each switch completed circuit includes an anti-fuse and a testing switch tube arranged in parallel connection; the testing switch tube is controlled by the control circuit to be opened or closed; after the testing switch tube is opened, the anti-fuse is in a short circuit; and after the testing switch tube is closed, the anti-fuse is enabled. According to the testability design circuit provided by the invention, by enabling the anti-fuse to connect one testing switch tube in parallel, the control circuit can be enabled to selectively control the opening of the testing switch tube in the switch completed circuit, and thus, the anti-fuse corresponding to a circuit that needs to be tested is guaranteed to be in the short circuit in a testing stage; and in a service stage, the testing switch tube is closed, the anti-fuse is enabled, and the closed testing switch tube does not affect signal transmission and also does not bring extra power consumption.

The invention provides an operational amplifier calibrating method and a circuit. The method includes the steps that an operational amplifier obtains an input first signal and an input second signal,conducts amplifying treatment to obtain a corresponding output third signal and a corresponding output fourth signal, and inputs the third signal and the fourth signal to the input end of an integrator; the integrator conducts integral treatment according to the received third signal and the received fourth signal, generates a corresponding output fifth signal and a corresponding output sixth signal, and feeds the fifth signal and the sixth signal to the operational amplifier; the operational amplifier conducts equalization treatment according to the received fifth signal and the received sixth signal and controls the third signal and the fourth signal output by the operational amplifier. The system comprises the operational amplifier and the integrator. The feedback circuit is composed ofthe integrator, so the voltage of the input differential of the operational amplifier on a transistor substrate is adjusted, and the aim of eliminating the offset voltage of the operational amplifieris realized.

The invention provides an array substrate manufacturing method. The manufacturing method comprises the following steps of forming a first metal pattern which consists of porous three-dimensional metal and graphene on a glass substrate; forming an insulating layer on the first metal pattern; forming an active layer on the insulating layer; and forming a second metal pattern which consists of porous three-dimensional metal and graphene on the active layer and the exposed insulating layer. By virtue of the manufacturing method, reflection of ambient light can be effectively lowered and quality of a display can be improved.

The invention discloses a visual fish finder and fish finding system capable of realizing accurate positioning and a fish finding method of the system, and relates to the technical field of fish finding equipment. An underwater probe of the fish finder is connected to a water surface positioning buoy through a communication cable; a camera and a control circuit board are installed in the underwater probe, and the control circuit board is provided with a gyroscope and an electronic compass; an upper shell of the water surface positioning buoy is fixedly connected to a lower shell of the water surface positioning buoy, and a watertight accommodating space is formed between the upper shell and the lower shell; the outer side wall of the water surface positioning buoy is detachably equipped with a battery pack, the top inner side wall is provided with a GPS module, a wireless communication module and a control main board, and the control main board is provided with a microprocessor, an electronic compass and a gyroscope; propellers are uniformly distributed at the lower part of the outer side wall of the lower shell, and a wire winding device is fixed in the lower shell; and the battery pack is in electrical signal connection with the control main board, the GPS module, the wireless communication module and the wire winding device. The fish finder can accurately detect the type, size and location information of underwater fish shoals, and enhance customer experience.

A high-temperature anti-explosion signal cable for new energy automobiles comprises a center conductor and a special high-temperature-resistant silicon rubber ceramic insulating layer. The center conductor is an annealed bare copper or tinned stranded conductor formed by standard cross stranding and is peripherally and closely coated with the special high-temperature-resistant silicon rubber ceramic insulating layer. The high-temperature anti-explosion signal cable has the advantages that performance requirements on high temperature resistance, super softness and the like can be met; after direct flame impact on the cable, the cable surface is turned into a ceramic shell with excellent flame-retardant, fireproof, fire insulation and fire prevention functions, and accordingly line smoothness is effectively protected, signal transmission is unaffected, signals can be transmitted quickly and accurately to enable people in automobiles to response timely, and personal safety is guaranteed.

The invention discloses a dipole antenna, which comprises a connector, a metal pole, a wire, a coil, a sheath and a metal tube which is embedded on the connector in a matching way. The wire comprises a signal wire and a shielding wire, wherein the shielding wire of the wire penetrates through the metal tube and is connected with the metal tube, the axial center of one end of the metal pole is provided with a stepping surface, the axial center of the stepping surface is provided with a first through hole, the signal wire of the wire is welded in the through hole, the axial center of the other end of the metal pole is provided with a second through hole, and the coil is riveted in the second through hole of the metal pole; and the coil, the metal pole, the metal tube and the wire are sleeved in the sheath, the sheath is fixedly connected with the connector, and a fixing plug is arranged between the coil and the sheath. The dipole antenna has the advantages that the frequency and signal of transmission are stable, and the product quality can be improved.

The invention discloses an amorphous alloy shell, which comprises a shell body with at least one wall. The amorphous alloy shellis characterized in that at least one part of the shell body is preparedfrom an amorphous alloy material, wherein the hardness of the amorphous alloy material is notless than 350Hv, and the relative permeability of the amorphous alloy material is less than 1.02. The amorphous alloy shell provided by the invention has the characteristics of high strength and low relative permeability, cannot be in coupled reaction with electron components, and cannot affect signal transmission.

The invention discloses a method for sharing part of path resources of a main channel and a backup channel in an ASON (automatically switched optical network). The method comprises the following steps: all path share markers in network topology are set to be non-sharable; the main channel is established and passes m nodes, and the (m-1) path passed by the main channel is removed from the network topology; the share marker of the (m-1) path is judged with a DFS (depth first search) algorithm, non-sharable paths are removed from the network topology, and sharable paths are retained; the backup channel in the network topology is calculated with an OSPF (open shortest path first) protocol. With adoption of the method, resource share on part of paths is allowed for permanent (1+1) main and backup channels, only one channel of the permanent (1+1) main and backup channels can be allowed in a working state, so that share of part of path resources cannot affect signal transmission, backup channels can be established continuously to protect follow-up failure of the non-sharable paths when the traditional permanent (1+1) backup channel cannot be established, meanwhile, the idle resource occupation amount of the backup channel is reduced, and the adaptability of the permanent (1+1) protection function to the network topology is improved.

The invention relates to the field of optical fiber communication, in particular to a chromatic dispersion damage monitoring method based on digital nonlinear processing. The method comprises the steps that a part of signal light is obtained from a main transmission line through an optical filter to be input into a TDC, a master control module drives the TDC to generate a series of chromatic dispersion values, and N sampling digital signals p1, p2, ...pN are recorded for each chromatic dispersion value so as to calculate output signals according to the equation showed in the specification, wherein the f(pj) in the equation is a nonlinear function which can be expanded in Taylor series; the symmetrical center of a data curve with chromatic dispersion measures exerted by the TDC on the signals as the x axis and with the corresponding output signal value as the y axis is recognized, the x coordinate of the symmetrical center of the data curve is obtained, and the contrary value of the x coordinate of the symmetrical center is the value of the signal chromatic dispersion damage. The chromatic dispersion damage monitoring method based on digital nonlinear processing has the advantages of being easy to integrate, low in power consumption and free of signal rate limits, does not influence signal transmission, and can achieve wide-range anti-interference and total blindness automatic chromatic dispersion damage monitoring.

The present invention relates to a natural traffic flow-based expressway vehicle behavior acquisition device and method. The acquisition device comprises a shell and a main control module arranged in the shell; the shell is provided with a card groove for accommodating an expressway toll station charging card; and the main control module comprises a control unit as well as a vehicle behavior data acquisition unit, a first wireless communication unit and a power supply unit which are all connected with the control unit, wherein the vehicle behavior data acquisition unit acquires vehicle behavior data including real-time positions, velocities and tri-axial accelerated velocities of vehicles, the control unit stores the real-time positions, velocities, tri-axial accelerated velocities of the vehicles and corresponding acquisition time, the control unit transmits data to the outside or receives remote control commands through the first wireless communication unit, and the power supply unit provides a working power source for other units. Compared with the prior art, the natural traffic flow-based expressway vehicle behavior acquisition device and method of the invention can transform social vehicles into test vehicles intangibly and obtain comprehensive, real and objective vehicle behavior data.

The invention relates to a multi-core optical fiber composite carrier cable production device which comprises an optical fiber pay-off rack, a stainless steel plate pay-off rack, a coating mechanism, a primary stranding mechanism, a secondary stranding mechanism and a pay-off rack, wherein the coating mechanism, the primary stranding mechanism, the secondary stranding mechanism and the pay-off rack are sequentially arranged from front to back, and the coating mechanism comprises a base. An insulating coating assembly, a coating assembly and an online welding assembly are sequentially arranged on the base from front to back. Stainless steel coating and two-wire twisting are successively carried out on the multi-core optical fiber, so that the strength of the optical fiber is improved, the problem that the optical fiber is easy to break when the current optical fiber carrier cable is subjected to high-strength mechanical external force is solved, the damage of the surrounding environment to the optical fiber can be prevented, real-time monitoring, real-time evaluation and real-time alarm of the carrier cable are realized, the operation and maintenance quality of a contact network system can be greatly improved, and even if an individual optical fiber is broken, the signal transmission of the whole multi-core optical fiber is not influenced.

The invention provides a lamp which comprises a lamp shell, circuit boards and an antenna structure. The circuit boards are arranged in the lamp shell, a first antenna hole is formed in the lamp shell, the antenna structure is electrically connected with the circuit boards, and at least part of the antenna structure penetrates through the first antenna hole and extends out of the lamp shell. According to the lamp, the antenna structure is in circuit connection with the circuit boards to achieve wireless communication with the outside, and one end of the antenna structure extends out of the lamp shell, so that even if the lamp shell is a metal piece, the antenna structure cannot be influenced to transmit and receive signals, and normal communication of the antenna structure can be ensured.

The invention discloses a fine-tuning high-efficiency antenna capable of preventing floating objects from being hit in severe weather and a prevention method, belongs to the technical field of fine-tuning antennas, and aims to solve the problems that broken stones on the ground can be rolled up due to wind power, the antenna in a severe environment is easily hit by the broken stones, normal operation of the antenna is affected, and even signal transmission operation of the antenna is directly interrupted. And if a protection device is directly additionally arranged at the periphery of the antenna, the signal receiving performance of the antenna is easily influenced. According to the invention, the shield plate swings to the right upper end of the fine-tuning antenna member to form a shield cover and presents an inclined state, and at the moment, the fan faces the right upper end of the fine-tuning antenna member to apply wind power to the fine-tuning antenna member from top to bottom, and the shield cover shields the fine-tuning antenna member in severe weather; the rotating shaft points of the traction swing rod and the cover plate are perpendicular to each other, so that the moving range of the cover plate and the traction swing rod is enlarged, under mutual auxiliary cooperation, flying birds are repelled daily, and the functionality of the cover plate is improved.