35results about How to "Does not affect transmission performance" patented technology

The invention relates to a direct-pass type optical fiber sealing device and a method for manufacturing the same. The direct-pass type optical fiber sealing device comprises a metallic flange disk(2) provided with at least one optical fiber through hole(5) along the direction parallel to the axial line, and the inside of the optical fiber through hole(5) is fixedly provided with a metallic tube(3) used for sealing and fixing the direct-pass optical fiber(4) passing the inner part of the metallic tube; and the main sealing structures, between the optical fiber through hole(5) of the metallic flange disk(2) and the metallic tube(3) and between the metallic tube(3) and the metalized part(10) of the direct-pass optical fiber(4), are both of welding seal. The device solves the technical problem existing in the prior that the effective seal cannot be achieved when the optical fiber serving as the transmission line is led out of a sealed blast vessel, and has the advantages of keeping the integrity and continuity of the optical fiber and having good sealing effect.

The invention discloses an energy transferring optical cable. The energy transferring optical cable comprises a core layer, a cladding, a tight cladding and an outer protective layer. The core layer is made of quartz glass materials, and the diameter of the core layer is 0.195 mm-0.205 mm. The core layer is covered with the cladding, the cladding is made of quartz glass materials, and the thickness of the cladding is 0.012 mm-0.016 mm. The cladding is covered with the tight cladding, the tight cladding is made of ethylene-tetrafluoroethylene copolymer materials, and the thickness of the tight cladding is 0.3 mm-0.5 mm. The tight cladding is covered with the outer protective layer, the outer protective layer is made of ethylene-tetrafluoroethylene copolymer materials, and the thickness of the outer protective layer is 0.2 mm-0.5 mm. The energy transferring optical cable has the advantages of being resistant to extra-high voltage, high in flame retardance, high in insulation, resistant to dirt, high in strength, long in service life and the like.

The invention discloses a MIMO waveguide leaky cable comprising a waveguide tube and an outer sheath which sleeves the waveguide tube. The waveguide tube is internally provided with a metal baffle plate which is arranged along the length direction of the waveguide tube, and two sides of the metal baffle plate are fixed to an inner wall of the waveguide tube to divide the waveguide tube into a first waveguide and a second waveguide. First radiation slots are arranged on a waveguide tube of the first waveguide with equal intervals, second radiation slots are arranged on a waveguide tube of the second waveguide with equal intervals, and the first radiation slot and the second radiation slot have different polarization directions. According to the MIMO waveguide leaky cable, the metal baffle plate is added to one waveguide, the transmission performance of the waveguide is not affected, a transmission channel can be added in the condition of not increasing the size of the waveguide, the cost is greatly reduced, at the same time, two kinds of different radiation slots are opened on two half waveguides, different polarization directions are generated, an MIMO is formed, compared with a MIMO rectangular waveguide, the MIMO waveguide leaky cable can be formed into discs and is easier to transport, install and maintain.

The invention provides a halogen-free flame retardant hot-melt adhesive film used on a high-frequency transmission wire rod. The halogen-free flame retardant hot-melt adhesive film comprises an insulating thin film layer and an adhesive layer, and is characterized in that the adhesive layer comprises the following raw materials in percentages by weight: 43% to 64% of saturated polyester resin A with the softening point of 85 to 95 DEG C, 5% to 10% of saturated polyester resin B with the softening point of 105 to 120 DEG C, 25% to 30% of a halogen-free flame retardant agent A, 5% to 10% of a halogen-free flame retardant B, 0.2% to 2% of isocyanate and 0.8% to 5% of a filler. According to the halogen-free flame retardant hot-melt adhesive film provided by the invention, self adhesion can berealized at the temperature of 100 to 130 DEG C, and the adhesive film is stabler in structure and simple and convenient to process and has good halogen-free flame retardant insulation and high-temperature resistance.

The invention discloses a medium-voltage soft-conductor photoelectric integrated cable comprising a plurality of power units. The power units are covered with a water stop layer, a liner layer, a wire armored layer and an outer sheath layer in order. A plurality of fiber units are disposed in gaps among the power units. Each power unit comprises a soft-conductor wire core which is covered with an inner shield layer, an insulating layer and an outer shield layer in order. Each fiber unit comprises a loose tube accommodating a fiber core, fiber paste and a reinforcing wire, and the loose tube of the fiber unit is covered with an asbestos cloth layer and a silicone layer in order. When the medium-voltage soft-conductor photoelectric integrated cable operates at high temperature for a long time, the interior temperature of the cable can be lower than 60 DEG C, and the transmission performance of the cable is unaffected; in addition, the asbestos cloth and silicone wrapping the fiber units also has the function of enhancing fiber outer support, and the fiber units are protected from crush when the fiber units and the power units are stranded into the cable.

The invention relates to the technical field of optical network communication, in particular to an intelligent optical network communication system based on a wavelength division multiplexing optical switching technology, which comprises an optical transmitter, an optical relay amplifier, an optical receiver, an optical monitoring channel and a network management system. According to the optical transmitter, optical signals output by terminal equipment are converted into signals with stable specific wavelengths through an optical transponder at a transmitting end, signals with fixed wavelengths are synthesized into multi-channel optical signals through a combiner, and the multi-channel optical signals are amplified and output through an amplifier. The invention has the beneficial effects of fully utilizing huge bandwidth resources of the optical fiber, increasing the transmission capacity of the optical fiber, reducing the cost, having great application value and economic value, being capable of transmitting signals with completely different characteristics, completing integration and separation of various signals, realizing mixed transmission of multimedia signals, saving a large amount of line investment, and the extremely high requirements on the performance of some devices can be reduced, and meanwhile, high-capacity transmission can be realized.

The invention discloses a modularized Pin-to-microstrip transition structure, which comprises a metal seat, a trapezoidal through hole is formed in the metal seat, a Pin is arranged in the through hole, an upper-layer substrate is fixed on the upper side of the metal seat, a transition substrate is arranged on the upper surface of the upper-layer substrate, and the metal seat is fixed on the transition substrate. An upper substrate through hole is formed in the position, corresponding to the through hole, of the upper substrate, a transition substrate through hole is formed in the portion, corresponding to the upper substrate through hole, of the transition substrate, the length of the transition substrate is smaller than that of the upper substrate, an upper substrate microstrip line is formed in the portion, on one side of the transition substrate, of the upper substrate, and a lower substrate microstrip line is formed in the portion, on the other side of the transition substrate, of the upper substrate. The upper end of the Pin is connected with one end of the microstrip line of the upper substrate through a metal structure located on the transition substrate. The transition structure has the advantages of high reliability, small size, low assembly difficulty and the like.

The invention discloses an optical fiber self-healing looped network camera adopting a network technology of a fiber self-healing looped network. The camera comprises a lens, an image sensor module, a control circuit, a video compressing and encoding module, an optical fiber self-healing looped network module, a video compressing and encoding module and an analog / digital video output interface module, wherein an original image obtained by the image sensor module is compressed and encoded by the video compressing and encoding module and then is packaged into an IP packet signal; the optical fiber self-healing looped network module receives the IP packet signal sent by the video compressing and encoding module and finishes the optical fiber access of the IP packet signal self-healing looped network; and the analog / digital video output interface module performs A / D conversion to the original image obtained by the image sensor module and outputs an analog or digital image signal. The camera can adapt to large-scale, long-distance, high-reliable networking transmission and control requirements of HDV, has a shooting function and has the functions of optical fiber self-healing looped network networking and image transmission.

The invention discloses a motor with a braking and decelerating mechanism and for an actuating device. The motor comprises a body, a rotary shaft and the braking and decelerating mechanism, wherein the rotary shaft is penetratingly connected at the center of the body, the braking and decelerating mechanism comprises a frictional component and a spiral spring, the frictional component is connected on the peripheral edge of the rotary shaft in a sleeved manner, the spiral spring is elastically clamped on the periphery of the frictional component, one end of the spiral spring is positioned on the body, and the spiral spring can press the frictional component to brake the rotary shaft to decelerate when the rotary shaft rotates unidirectionally. Consequently, the motor with the braking and decelerating mechanism and for the actuating device is prolonged in service life due to low loss of the spiral spring, and good in braking and decelerating performance due to large contact area between the frictional component and the rotary shaft.

The invention provides a protection circuit of a communication interface. The circuit includes: a first-level protection circuit, a second-level protection circuit and a third-level protection circuit connected in sequence, wherein: the first-level protection circuit includes a current discharge circuit, wherein the current discharge circuit It includes three connection ends, the first connection end is connected to the first signal line of the two signal lines of the RS-485 port, the second connection end is connected to the second signal line of the two signal lines of the RS-485 port, The third connection terminal is connected to the protective ground; the second-level protection circuit includes a first current-limiting resistor, a second current-limiting resistor and a bidirectional transient suppression diode; the third-level protection circuit includes a voltage discharge circuit, wherein the voltage discharge The amplifier circuit is connected to the communication ground, and one end is connected to the two signal lines of the RS‑485 port, and the other end is connected to the RS‑485 transceiver.

The invention relates to an organic solar cell structure based on a dimethacrylate monomer and a preparation method thereof, comprising a transparent conductive substrate, an electron transport layer, an organic active layer, a hole transport layer, and a metal electrode from bottom to top; The organic active layer includes P3HT:PCBM and dimethacrylate monomer. Dimethacrylate monomer is added to the organic active layer, and an insoluble insulating network skeleton is formed after ultraviolet treatment, which solves the problem of unstable morphology of the organic active layer. , so that the organic active layer has good thermal stability. And the mechanical properties of the film are improved, which provides technical assistance for flexographic printing.

The invention discloses a single-fiber bidirectional transmission system based on mode division multiplexing. The single-fiber bidirectional transmission system based on the division multiplexing mainly comprises two optical signal input units, two optical signal output units and a mode division multiplexing and demultiplexing unit, wherein the mode division multiplexing and demultiplexing unit comprises two mode-type multiplexers which are connected through few-mode fiber. Polarization multiplexing optical signals are generated by the signal input units, the polarization multiplexing optical signals are enabled to be coupled into a mode field of the few-mode fiber by the mode-type multiplexer to finish the mode division multiplexing, the polarization multiplexing optical signals carried by the mode field are sent to the other mode-type multiplexer through the few-mode fiber, the received polarization multiplexing optical signals are enabled to be coupled into single-mode fiber by the other mode-type multiplexer and sent to the optical signal output units through the single-mode fiber, polarization diversity, mixing and balance detection are carried out on the received optical signals by the signal output units, then the received optical signals are changed into electric signals and then changed into digital signals. According to the single-fiber bidirectional transmission system based on the mode division multiplexing, the few-mode fiber is used for overcoming Rayleigh backward scattering effect, single-fiber bidirectional transmission is achieved, and use efficiency of optical fiber and wavelength resources is improved.

The invention discloses a testing device based on conformal antenna design in a high-explosion and high-pressure environment. The testing device is characterized by comprising a sealing cover conformal antenna, a sealing ring, a testing module, a battery and a protecting device, wherein the sealing cover conformal antenna serves as an upper cover of the protecting device and is matched with the protecting device, the sealing ring is arranged between the sealing cover conformal antenna and the protecting device, the testing module is located in the protecting device, and the battery is arranged in the protecting device. The design of the testing device for performance parameters of missiles and the like in a high-explosion and high-pressure environment can be simplified, real-time parameter acquisition and processing can be achieved, testing cost can be lowered, and testing efficiency can be improved.

The present invention proposes an anti-surge circuit for an Ethernet interface. By setting a power supply protection circuit, it mainly protects the differential mode protection of live wires and neutral wires and the common mode protection of live wires to ground and neutral wires to ground; The protection circuit can choose different paths for the positive and negative currents to absorb the high-power current and play a protective role; by setting the first-level protection circuit and the second-level protection circuit in the protection circuit, the differential mode protection capability of the network port is enhanced. And it will not affect the network transmission performance, can guarantee the original network transmission distance and transmission speed, the network transmission distance and network port waveform can meet the specification requirements, and has a good lightning protection effect.

The invention discloses a hinge structure with a signal transmission line. The hinge structure comprises at least two rotating vanes and two parallel rotating vane connecting pieces arranged between the two adjacent rotating vanes, i.e. a first rotating vane, a second rotating vane, a first rotating vane connecting piece and a second rotating vane connecting piece, wherein the first and second rotating vanes are connected through the first and second rotating vane connecting pieces in a rotating manner; each rotating vane connecting piece comprises at least two parallel signal transmission channels; the signal transmission channels in each rotating vane connecting piece are in S-shaped connection; a signal of a first unit connected with the first rotating vane can be transmitted into a second unit connected with the second rotating vane. According to the hinge structure with the signal transmission line, the signal transmission channels are designed as in the S-shaped connection, so that the signal transmission channels are perpendicular to a rotating direction, are namely parallel to the hinge structure, and are not likely to be bent along with bending of the hinge structure, influence on transmission performance of the signal transmission line is eliminated, and long service life is ensured.

The invention discloses production equipment for a high-density optical fiber bundle micro unit optical cable. The production equipment comprises a reinforcing piece pay-off device, an optical fiber bundle micro unit pay-off device, a water blocking unit pay-off device, a stranding device and a jacket extruding device, wherein the inlet of the jacket extruding device is provided with a blowing device, an optical fiber bundle micro unit is released from the optical fiber bundle micro unit pay-off device and then enters the stranding device together with a water blocking yarn released from the water blocking unit pay-off device so as to be stranded, the stranded optical fiber bundle micro unit and an reinforcing piece released from the reinforcing piece pay-off device enter the jacket extruding device through the blowing device so as to extrude jackets. According to the production equipment for the high-density optical fiber bundle micro unit optical cable, before the micro unit bundle enters the jacket extruding device, the optical fiber bundle micro unit has a certain structure exceeded length, so that the tensile performance of the optical cable is improved; and the blowing deviceis added before the jacket extruding device, so as to ensure the cable round through the action of air flow.

The invention discloses a hinge structure with a signal transmission line. The hinge structure comprises at least two rotating vanes and two parallel rotating vane connecting pieces arranged between the two adjacent rotating vanes, i.e. a first rotating vane, a second rotating vane, a first rotating vane connecting piece and a second rotating vane connecting piece, wherein the first and second rotating vanes are connected through the first and second rotating vane connecting pieces in a rotating manner; each rotating vane connecting piece comprises at least two parallel signal transmission channels; the signal transmission channels in each rotating vane connecting piece are in S-shaped connection; a signal of a first unit connected with the first rotating vane can be transmitted into a second unit connected with the second rotating vane. According to the hinge structure with the signal transmission line, the signal transmission channels are designed as in the S-shaped connection, so that the signal transmission channels are perpendicular to a rotating direction, are namely parallel to the hinge structure, and are not likely to be bent along with bending of the hinge structure, influence on transmission performance of the signal transmission line is eliminated, and long service life is ensured.

Provided is a trigger optical cable applied to the field of ultra-high voltage power transmission. The trigger optical cable applied to the field of the ultra-high voltage power transmission comprises a core layer, a wrapping layer, a coating layer, a tight wrapping layer, a reinforced layer and an outer protective layer from inside to outside in sequence. The core layer is of a solid structure, the wrapping layer wraps the outer wall of the core layer, the coating layer wraps the outer wall of the wrapping layer, the tight wrapping layer wraps the outer wall of the coating layer, the reinforced layer wraps the outer wall of the tight wrapping layer, and the protective layer wraps the outer wall of the reinforced layer. The tight wrapping layer is made of Hytrel materials of flame-retardant level, the outer protective layer is made of fluoroplastics, the reinforced layer is filled with aramid fibers, and the refractive index of the core layer is larger than that of the wrapping layer. The trigger optical cable applied to the field of the ultra-high voltage power transmission does not influence the transmission performance of the optical cable in the near-infrared band in an 800nm-1400nm range under the premise that the ultra-high voltage endurance level and the flame-retardant level of the whole product are ensured, and is resistant to corrosion, resistant to high low temperature, inflaming retarding, insulative, resistant to ultra-high voltage, resistant to treading and free of damage.

The invention provides a micro beam tube bow type drop optical cable and belongs to the field of bow type drop optical cables. The micro beam tube bow type drop optical cable includes an optical cablebody. The optical cable body includes a protection sleeve, an optical communication unit and a reinforcement member; the protection sleeve is wrapped around outer parts of the optical communication unit and the reinforcing member; the optical communication unit includes a micro beam tube and at least four optical fibers, a plurality of optical fibers are arranged inside the micro beam tube, and the micro beam tube is made of polyolefin material. The bow type drop optical cable adopts a multi-core micro beam tube structure, high-density optical fiber distribution of the bow type drop optical cable is realized, and transmission performance of the optical fibers is not affected. Characteristics of small size, light weight, simple access mode and the like of a traditional bow type optic cableare retained while needs of great bandwidth access can be met. The optical cable disclosed in the invention is developed for future 5G and networks with improved speed access.

The invention relates to a direct-pass type optical fiber sealing device and a method for manufacturing the same. The direct-pass type optical fiber sealing device comprises a metallic flange disk(2) provided with at least one optical fiber through hole(5) along the direction parallel to the axial line, and the inside of the optical fiber through hole(5) is fixedly provided with a metallic tube(3) used for sealing and fixing the direct-pass optical fiber(4) passing the inner part of the metallic tube; and the main sealing structures, between the optical fiber through hole(5) of the metallic flange disk(2) and the metallic tube(3) and between the metallic tube(3) and the metalized part(10) of the direct-pass optical fiber(4), are both of welding seal. The device solves the technical problem existing in the prior that the effective seal cannot be achieved when the optical fiber serving as the transmission line is led out of a sealed blast vessel, and has the advantages of keeping the integrity and continuity of the optical fiber and having good sealing effect.