86results about How to "The transmission signal is stable" patented technology

The invention discloses a fiber bragg grating detection system device and method for detecting an anchoring force of an anchor rod. The fiber bragg grating detection system device consists of a fiber bragg grating sensor array, a fiber bragg grating anchor rod dynamometer, a fiber bragg grating demodulator, an optical cable and a computer, wherein the fiber bragg grating anchor rod dynamometer mainly comprises a plurality of fiber bragg grating sensors which are uniformly arranged on an annular elastic body arm and is arranged at the end part of the anchoring end of the anchor rod; meanwhile, the fiber bragg grating sensor array is distributed on a rod body of the anchor rod; the fiber bragg grating sensor array and the fiber bragg grating anchor rod dynamometer are respectively connected with the fiber bragg grating demodulator through the optical cable; and the fiber bragg grating demodulator is connected with the computer. According to the fiber bragg grating detection system device, the real-time detection on the stress of the anchor rod can be realized and the distributed measurement can be realized. The fiber bragg grating detection system device has the advantages of simple structure, convenience in mounting, high detection speed, long-distance monitoring, repeated use and easiness in protection and maintenance, and is widely applied to tunnels and slopes dug for coal mines, metallurgical mines, water conservancy, railways, roads and defense.

Disclosed is a printed circuit board with opto-via holes for transmitting an optical signal to an optical waveguide in the PCB, and a process of forming the opto-via holes. The process comprises forming a plurality of via holes on a plurality of copper clad laminates using a drill, plating an inner wall of each via hole, exposing and etching the plated portions of an upper and lower side of each copper clad laminate to form a circuit pattern on the upper and lower side of the copper clad laminate, layering the patterned copper clad laminates on each other using an insulating resin adhesive, and removing the insulating resin adhesive in the predetermined via holes to form opto-via holes. Therefore, the process is advantageous in that the optical signal is stably transmitted to the optical waveguide in the PCB without damage to the optical waveguide directly exposed to an external environment, and the optical waveguide suitable to physical properties of the material constituting the PCB is easily inserted between the inner layer and the outer layer.

An electrical connector includes an insulating body with a main body portion in which a first receiving space is concavely formed. Spaced first terminal passages extend in a top surface of the first receiving space. A second receiving space is formed in the front end of the main body portion and connected with the first receiving space. A tongue plate extends forwards from a front end face of the main body portion and has a working surface in which spaced second terminal passages extend. The second receiving space is located above the tongue plate. First and second conductive terminals are respectively correspondingly received in the first and the second terminal passages. When a memory card is inserted into the connector, there is no other in-series disturbed signal noise for stable signal transmission; and when the memory card is inserted to its position, it cannot swing and can be connected stably.

The invention discloses a displacement sensor, which is characterized in that the displacement sensor comprises a shell, a circuit board and a rotating shaft, the shell is provided with a cavity, a metal terminal is arranged on the shell, one end of the metal terminal is connected with an external conducting wire, the other end of the metal terminal extends into the cavity of the shell, and a through hole for penetrating the rotating shaft is arranged on the wall of the shell; a conductor rail is arranged on the circuit board, a resistor is arranged on the conductor rail, the resistance of the resistor changes with the length of the resistor and the conductor rail is connected with the metal terminal; a brush is arranged on the side surface of the rotating shaft and is electrically connected with the resistor; the circuit board is arranged around the rotating shaft; and the metal terminal, the conductor rail, the resistor and the brush form a resistance-adjustable conducting circuit. The volume of the displacement sensor is small but the number of lines capable of transmitting signals is large. The displacement sensor is particularly suitable for hybrid vehicles and the safety and the stability of the output signals can be ensured. Moreover, the invention has the advantages of convenient assembling, environment-friendly process, cost saving and long service life.

A low voltage data transmitting circuit (LVDTC) may be connected to a first transmission line that transmits a first voltage signal to a receiver and a second transmission line that transmits a second voltage signal to the receiver. The LVDTC includes a first resistor coupled to the first transmission line, a second resistor coupled to the second transmission line, and a control unit coupled to the first transmission line and the second transmission line, the control unit being configured to control voltage levels of the first and second voltage signals such that the voltage levels of the first and second voltage signals are higher than a ground voltage level of the receiver, wherein the first and second voltage signals may constitute a differential pair.

A transmission circuit is provided which can output a stable transmission signal independently of the temperature characteristics of an amplitude modulating section. A signal generating section generates an amplitude signal and a phase signal. A regulator supplies a voltage which is controlled, depending on the amplitude signal, to the amplitude modulating section. An angle modulating section subjects the phase signal to angle modulation to output an angle-modulated signal. A temperature detecting section outputs temperature information of the amplitude modulating section. A gain control section controls a gain of a variable gain amplifier based on the temperature information of the amplitude modulating section. The variable gain amplifier amplifies the angle-modulated signal using the gain controlled by the gain control section. The amplitude modulating section subjects the angle-modulated signal to amplitude modulation using a voltage which is controlled, depending on the amplitude signal, to output an amplitude-modulated signal.

An intermediate electrical connector to be connected to a mating connecting member includes an intermediate connecting member; and a blade disposed in the intermediate connecting member. The blade includes a first ground plate, a second ground plate, a base member, a signal terminal, and a ground terminal. The signal terminal includes a first contact portion and a first connecting portion connected to the first contact portion. The ground terminal includes a second contact portion and a second connecting portion connected to the second contact portion. The first ground plate is situated on one side of the blade over the first connecting portion and the second connecting portion. The second ground plate is situated on an opposite side of the blade over the first connecting portion, the second connecting portion, the first contact portion, and the second contact portion.

The invention discloses a combine test bed for an electric power steering (EPS) system. The combine test bed comprises a bed body, a power steering system installed above the bed body and a load simulator installed below the bed body, the power steering system comprises a steering wheel, a steering input shaft connected with the steering wheel and a steering output shaft connected with the steering input shaft, the steering input shaft is connected with a torque sensor, and the torque sensor detects the value of torque of the steering wheel, the load simulator comprises a gear and rack type direction machine connected with the steering output shaft, and the direction machine is driven by a brushless motor. According to the combine test bed, data transmission is conducted through a wireless communication module according to a Bluetooth wireless communication protocol, no transmission communication line is needed, and stability of EPS transmission signals is guaranteed; multiple vehicle types can be simulated on the same test bed; EPS is not limited by occasions, transmission signals are stable, and service life is long.

The invention relates to the transmission of data, in particular to an E-SATA (External-Serial ATA) data transmission cable applied to the data transmission of hard discs. The E-SATA data transmission cable comprises four core threads, an inner shielding layer, an inner sheath layer, an outer shielding layer and an outer sheath layer and is characterized in that two core threads covering hot-melt aluminum foil mylar inner shielding layers are arranged in parallel, the side surface of each core thread is provided with a ground wire, the inner sheath layer covers the core thread and the ground wire, the outer shielding layer consisting of a hot-melt aluminum foil and a conductive metal wire braid layer is arranged outside the outer shielding layer, and the outer sheath layer is arranged outside the outer shielding layer. The invention has the advantages of convenience of operation, simple structure, high production efficiency, signal transmission stability, fast signal transmission speed, good signal transmission quality and the like.

The invention relates to an optical cable connector for an environment resistant neutral optical cable, mainly comprising a lock sleeve, a belt locating pin, a locating hole, a plug body for a first and a second optical fiber locating holes, a protective bobbin and two ceramic ferrules; the two ceramic ferrules are positioned in the first and the second optical fiber locating holes through a small pressure spring and a pressure spring sleeve; and the front end of any ceramic ferrule is provided with an optical fiber butt joint assembly. When the connectors of the invention are connected in pairs, the locating pin of a connector matches with the top position of the locating hole of the other connector, and the ceramic ferrule of one connector is connected with the ceramic ferrule of the other connector through the optical fiber butt joint assembly. The optical cable connector has the advantages of stability and firmness for splicing, precise for positioning, small signal attenuation, stable transmission, compact structure, convenience for mounting, dismounting and maintenance, resistance to environmental change, and long service life, thereby satisfying the commercial or military requirement of miniaturization, high performance and field use.

An intermediate electrical connector to be connected to a mating connecting member includes an intermediate connecting member; and a blade disposed in the intermediate connecting member. The blade includes a first ground plate, a second ground plate, a base member, a signal terminal, and a ground terminal. The signal terminal includes a first contact portion and a first connecting portion connected to the first contact portion. The ground terminal includes a second contact portion and a second connecting portion connected to the second contact portion. The first ground plate is situated on one side of the blade over the first connecting portion and the second connecting portion. The second ground plate is situated on an opposite side of the blade over the first connecting portion, the second connecting portion, the first contact portion, and the second contact portion.

The invention discloses a computer cable for a nuclear power station, which solves the problems of poor shielding performance and low wear-resistant degree of the computer cable for the nuclear power station in prior art and has the advantages of simple structure, convenient usage and effective enhancement of the ante-interference ability of the cable. The structure of the computer cable for the nuclear power station is that: the invention is provided with a plurality groups of conductors; outer walls of every group of conductors are covered with an insulating layer and are arranged in a backfill body; the outer wall of the backfill body is provided with a cable double-layer sheath and a heterogeneous cable double-layer shield; at the same time, every two cores of conductors forms one group, the outside of which is provided with a heterogeneous conductor double-layer shielding layer.

The invention discloses a high-performance cable for construction. The high-performance cable for construction solves the problem that the existing cable for construction is low in fire resistance, poor in weather resistance, short in service life and the like. The high-performance cable for construction has the advantages of being environmentally friendly, inflaming retarding, waterproof, moistureproof, strong in antijamming capability, excellent in electric performance, long in service life and the like. The high-performance cable for construction structurally comprises a cable core which is composed of a plurality of insulating wire cores arranged in a filling body, each insulating wire core comprises a conductor and a double-layer co-extrusion heterogeneous insulating layer arranged outside the conductor in a pressing and wrapping mode, and the cable core is sequentially wrapped by a wrapping layer, a cable shielding layer, an oxygen separating layer, an armor layer and a cable outer sheath sequentially from inside to outside.

A system and a method for parallel power supply control for auxiliary converters of a motor train unit in the presence of interconnecting lines. The system comprises multiple three-phase inverter modules. The multiple three-phase inverter modules are in parallel connection with each other. Any two-phase circuit of a three-phase inverter module is separately in parallel connection with a corresponding two-phase circuit of a three-phase inverter module adjacent to the three-phase inverter module by using a connecting line module. The connecting line module is connected to a control system. The three-phase inverter modules are also connected to the control system. The three-phase lines of the three-phase inverter modules are all provided with switches. Less interconnecting lines are used, and any two phases of the three-phase inverter modules are separately in parallel connection, and therefore, stable power supply is achieved by balancing currents of any two phases of the three-phase circuits, and the system reliability is improved.

A memory system includes a first memory device and a second memory device suitable for outputting and receiving signals through first and second sub input / output lines, respectively, a controller suitable for outputting and receiving signals to and from the first memory device and the second memory device, through a main input / output line and a selection unit suitable for electrically coupling the main input / output line with one of the first and the second sub input / output lines, through which an activated one of the first memory and the second memory devices outputs and receives signals.

The invention relates to power equipment, and discloses a broadband power line carrier meter reading concentrator, including a power supply and a control system, the power supply is used to supply power to the control system, and the control system includes a main processor, a data acquisition module, a data transmission module, and a broadband power line carrier Communication module, uplink communication module, temperature sensor, humidity sensor, memory and display screen, main processor is connected with data acquisition module, data sending module, temperature sensor, humidity sensor, memory, display screen respectively, data acquisition module is connected with broadband power line carrier The communication module is connected, and the data sending module is connected with the uplink communication module. The invention has the effects of faster data transmission, stable transmission signal and large transmission data volume.

The invention relates to the transmission of signals, in particular to a cable for connecting a PC (Personal Computer) host with RGB (Red, Green, Blue) signal wires of a display, a monitor and other display devices. the cable comprises four core wires coated with insulating layers and five power lines and is characterized in that each core line coated with the insulating layer is coated with an inner shielding layer after being combined with a grounding wire, the inner shielding layer is made of single-sided aluminum foil Mylar, the four core wires coated with the inner shielding layer, the grounding wire and the five power lines form a wire harness which is coated with an aluminum foil and conductive metal wire braid layer, and a jacket is arranged outside the braid layer. The invention has the advantages of convenience for operation, simple structure, high production efficiency, more stability for signal transmission, high speed for signal transmission, good quality for signal transmission and the like.

The invention relates to a traveling elevator cable. The traveling elevator cable comprises a flat cable sheath, wherein cable cores are respectively arranged at two ends in the cable sheath; a butterfly cable is arranged in the middle in the cable sheath. The traveling elevator cable is long in service life, and is unlikely to break after being used for a long time, thereby guaranteeing the transmission stability of network signals.

The invention discloses a monitoring system of transformer iron core current. The system comprises a zero-flux CT current sensor, the zero-flux CT current sensor is arranged at a ground copper bar ofa main transformer iron core, and the current sensor is fixed by welding and installing a bracket at the ground copper bar of the main transformer iron core, and then the ground copper bar penetratesthe sensor inner diameter; the signal conversion is performed on the current sensor through a signal preprocessing circuit in order, a current signal is collected through a collection circuit, and then the signal is transmitted to a control circuit; the control circuit transmits the signal to a storage circuit to store, the control circuit is connected with a display at the same time, and the signal is displayed through a display. The current detection of the main transformer iron core is performed through the zero-flux CT current sensor, the installation is convenient and the measurement is precise; the detected signal is preprocessed and converted, and then transmitted to the collection circuit, and then the signal is displayed through the display circuit; the storage circuit stores thecurrent signal data, and the monitoring is convenient.

The invention discloses a wireless mouse control system based on ZigBee communication. The system comprises a computer, a ZigBee receiver, and a wireless mouse. The number of the wireless mouse is at least one. The wireless mouse comprises a control module, and a ZigBee sending module which is connected with the control module and is provided with a ceramic patch antenna. The ZigBee receiver comprises a ZigBee receiving module with a ceramic patch antenna, and a USB-to-serial port module. The wireless mouse and the ZigBee receiver realize communication through ZigBee wireless signals. The ZigBee receiver and the computer realize communication through a USB interface on the computer. The system uses ZigBee wireless communication to realize data transmission, and is low in power consumption, large in transmission range, good in anti-interference capability, and high in communication efficiency. The system realizes that one computer can connect with a plurality of mouses for ZigBee communication, operation is more convenient, and signal interference does not exist among the mouses, and the system is stable in signal transmission.

The invention discloses a buoy station with an underwater protection device. The buoy station comprises a cleaning rod, a cleaning brush, a partition plate, sponge gaskets, an iron sheet frame and a filter gauze, wherein the cleaning brush is arranged on one side of the cleaning rod, the sponge gaskets are attached to the upper surface and the lower surface of the partition plate, and the filter gauze is attached to the outer surface of the iron sheet frame. According to the buoy station, the structure is scientific and reasonable, the use is safe and convenient; the cleaning brush is arranged, the surface of a solar panel is cleaned efficiently, and the situation that the transition efficiency of solar energy is reduced caused by the surface of the solar panel being covered with stains isavoided; a bird repelling agent box is arranged, birds are effectively prevented from nesting or staying on a buoy station body by using a bird repelling agent, so that the birds are prevented from interfering with the transmission of signals to ensure the buoy station to transmit the signals stably; the iron sheet frame and the filter gauze are arranged, and when a river is rushing fast, the impact of the water flow on the buoy station body can be effectively reduced through the iron sheet frame, and meanwhile, water quality acquisition equipment at the bottom of the buoy station can be prevented from being damaged by the impact.

An embodiment of the invention provides a monitoring system and a monitoring method for agricultural multifunctional Internet-of-things. Through combining an industrial-grade multiple-programmed PLC with an industrial-grade network communication box, an industrial-grade cabinet can resist a plurality of kinds of natural factors in a field environment. Cooperation of a wired manner and a wireless manner is utilized on a transmission signal, thereby maximally ensuring data transmission stability and remote control reliability. The industrial-grade multiple-programmed PLC is synchronized with a platform through the industrial-grade network communication box, and the program of the PLC can be remotely modified through the platform, thereby realizing high flexibility of the system. One network communication box can be connected with a plurality of PLCs, so that data are synthesized to one platform through one network communication box. Different species of the agricultural Internet-of-things can be realized through one multifunctional system, and a plurality of control requirements of an agricultural enterprise are satisfied.

The invention relates to transmission of digital signals, in particular to a Displayport digital access signal transmission line suitable for computers, liquid crystal display televisions, digital light processing (DLP) large screen displays, high-end 3DLP projectors and other pieces of high-end display equipment. The Displayport digital access signal transmission line comprises five pairs of signal wires, and five electronic wires, an outer shielding layer and a jacket layer, and is characterized in that: each pair of signal wires and an earth wire are matched and are wrapped by a double-sided Mylar so as to form an inner shielding layer, five signal wires wrapped with the inner shielding layers, an earth wire and the five electronic wires form a wire harness, and the outer shielding layer is woven from an aluminum foil and a conductive metal wire; and the polyvinyl chloride (PVC) jacket layer is arranged on the outer shielding layer. Due to the adoption of the structure, the double-sided Mylar wrapping insulativity of the transmission line can reach 100 megohms, and the near-end and far-end cross talk exceeds the standard requirements of a video electronics standards association (VESA) and the transmission line has the advantages of simple process, low cost, higher efficiency, high tensile strength, long service life, small interference with signal transmission, stability in signal transmission and the like.

A test socket assembly which can stably transmit a signal at high communication speed comprises: a test socket having a plurality of conductive parts for electrically connecting a device terminal of the device to be tested and a board terminal of the tester board; a guide housing including a housing body having a housing opening into which the device to be tested can be inserted, and a socket supporting section disposed beneath the housing opening so as to protrude from one surface of the housing body; and a socket frame including a frame body, which is coupled to the test socket so as to be secured to the socket supporting section so that the test socket is supported beneath the housing opening, and a frame wing which is bent from the frame body toward the housing body so as to be secured to the housing body.

The invention relates to a flash lamp cable for an airport. Crosslinking polyethylene insulating layers I with high electrical performance and smaller dielectric constant are coated on all copper conductors I. A plurality of copper conductors I coated with the crosslinking polyethylene insulating layers I are stranded into stranded copper conductors. A lapping layer I, a copper wire braided branch shielding layer and a lapping layer II are sequentially coated at the periphery of each stranded copper conductor to form a copper conductor insulating wire core. A polyethylene insulating layer II is coated at the periphery of the cooper conductor II to form a grounding wire core. A formed cable filling layer is filled between the grounding wire core and each stranded copper conductor. A lapping layer III is lapped at the periphery of the formed cable filling layer to form a cable insulating wire core. A copper wire braided general shielding layer, a polyethylene isolating sleeve, a galvanized steel strip armor layer and a polyethylene outer sheath are sequentially coated at the periphery of the cable insulating wire core. The flash lamp cable for an airport has high electrical performance, less transmission consumption and stable transmission signal.

The invention discloses a bundling pipe and a production technique thereof. The bundling pipe is composed of hollow pipes, an inner protection sheath pipe, an aluminum band layer and an outer protection sheath layer. The hollow pipes are wrapped with the inner protection sheath layer. The inner protection sheath layer is wrapped with the aluminum band layer. The aluminum band layer is wrapped withthe outer protection sheath layer. The invention has advantages of good solidness, good anti-interference performance and good signal transmission stability.

The invention discloses a UPS battery fault detection system of an STM32. The UPS battery fault detection system comprises a data acquisition part, a data conversion and transmission part and an upper computer real-time monitoring part, wherein the data acquisition part acquires an internal resistance value of a single battery and a total current value of a group of batteries, the acquired data is subjected to data conversion from a serial port RS485 to a network TCP / IP protocol which is completed by means of the data conversion and transmission part, and the upper computer real-time monitoring part performs real-time display monitoring on the whole system. The UPS battery fault detection system adopts a method of monitoring the internal resistance and current magnitude of the batteries in the case of uninterruptible power, so that the detection and maintenance are more convenient; in addition, the UPS battery fault detection system adopts the method of equipping the group of batteries with a current online monitoring module during the monitoring process, and the power supply ability of the group of batteries can be detected simultaneously. The UPS battery fault detection system adopts the STM32 single chip microcomputer, thus the monitoring cost can be reduced; and the UPS battery fault detection system adopts the serial RS485 for data communication and transmission, the expansibility is better, and the signal transmission is more stable.

The invention provides a remote vehicle-mounted air conditioner ventilation control system and discloses a remote vehicle-mounted air conditioner temperature control system. The system is composed ofa vehicle-mounted air conditioner, an air conditioner remote control module, a remote control unit and a vehicle-mounted air conditioner manual control module. The remote vehicle-mounted air conditioner ventilation control system is characterized in that the system further comprises a vehicle-mounted ventilator and a ventilator remote control module, the ventilator remote control module comprisesan air detection sensor and a ventilator start module, the air conditioner remote control module comprises an air conditioner start module and a temperature sensing module, the air detection sensor and the temperature sensing module are connected with the input end of a main control computer, the ventilator start module and the air conditioner start module are connected with the output end of themain control computer, and the remote control unit is connected with the main control computer through a communication module and comprises an LED display screen which can display important indexes ofthe temperature and the air condition in a vehicle. A network transmission mode is used, a vehicle-mounted air conditioner and the ventilator are remotely controlled, the proper temperature and the air condition in the vehicle are guaranteed, a unique LED display mode is adopted, and a vehicle owner can know the condition in the vehicle more visually.