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.

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 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 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.

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.

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.

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.