101results about How to "Stable and reliable signal transmission" patented technology

The invention discloses a dual-computer redundancy fault-tolerant system and the redundancy switching method. The system comprises an A computer, a B computer, redundancy switch control units in the A and B computers transmit respective switch signals to a redundancy switch selecting unit, and the final control signal generated by the redundancy switch selecting unit is transmitted to a controlled unit. The redundancy switch control unit includes an arbitrary switch unit, a heartbeat receiving unit, a power on-off unit and a monitoring unit. The method comprises the following steps: the two computers are powered up, a master computer and a slavery computer are decided by power up strategy; the states of the two computers are judged; if the two computers have no fault, the task segment of a system is judged: if the system is in normal task segment, a working computer powers up a backup computer, and executes cold backup strategy; if the system is in key task segment, the working computer powers down the backup computer, and executes hot backup strategy; if a single computer has fault which is restorable, the fault is restored, or else, the system enters into single computer state. The system has simple structure and reliable signal transmission; the method is easy to control, the system fault rate is greatly reduced, thus having good fault-tolerant effect.

An improved APB bus bridge structurally comprises an AHB bus interface and an APB bus interface and further comprises an interface sequential conversion and control module, a control FIFO (First In First Out) module and a data FIFO module, wherein the interface sequential conversion and control module comprises a state machine, a data FIFO control logic unit and a control FIFO control logic unit and a register. A control method of the improved APB bus bridge comprises the following steps: generating a ready signal by the APB bus bridge; determining that the ready signal has a high level, and autonomously sending a transmission request by an AHB bus master; receiving and judging the transmission request by the APB bus bridge, wherein if the transmission request is effective, a control signal and data of the transmission request are stored in the corresponding FIFO modules respectively and the APB bus bridge does not distinguish read and write transmissions; and through state conversion and control of the state machine of the interface sequential conversion and control module, after finishing sequential matching conversion of the two buses, quickly carrying out reliable transmission operation. The improved APB bus bridge is applicable to sequential synchronous and asynchronous AHB-to-APB bus transmission and is compatible with a memory interface.

An electrical connector (1) comprises an insulative housing (2) with a mating portion (23), a plurality of conductive contacts (4) located in the mating portion and a conductive shielding member (3) encircling the insulative housing. The housing includes a base portion (21) and a pair of guide posts (24) extending from the base portion along a mating direction. Each guide post extends beyond the mating portion. The shielding member includes a substantially rectangular plate (30), a frame (31) extending from the plate for completely encircling the mating portion of the housing and contacting portions (32) corresponding to the guide posts and extending beyond the mating portion for partially surrounding the guide posts. When the electrical connector is mating with a complementary connector, the contacting portion (32) electrically contacts with a conductive member arranged in the complementary connector to cause electrostatic discharge before electrical engagement of the conductive contacts. Thus, the electrostatic discharge may hardly affect the function of the conductive contacts.

A transmission power control technique allowing stable and reliable signal transmission in soft handover is disclosed. Each of the base stations involved in soft handover measures an amount of loss of the base station selection signal. When the amount of loss of the base station selection signal exceeds a threshold, the transmission power of the downlink signal is not set to the minimum level but to the normally controlled level. Further, a transmission power update timing of each base station is determined so that the downlink signal received at the mobile station changes in transmission power at a predetermined timing synchronized with that of other base stations.

The invention discloses an automatic control system for a high-frequency high voltage static dust-collecting power supply based on DSP+FPGA. The automatic control system comprises a power supply plate, an analog digital signal conditioning plate, a DSP+FPGA main control panel, an IGBT (Insulated Gate Bipolar Transistor) driving plate and an upper computer, wherein the power supply plate is connected with the analog digital signal conditioning plate, the DSP+FPGA main control panel and the IGBT driving plate; the analog digital signal conditioning plate is used for collecting and conditioning the analog quantity and digital quantity in a main circuit of the dust-collecting power supply and transmitting the voltage analog quantity after being conditioned to the DSP+FPGA main control panel; the DSP+FPGA main control panel combines the collected information for sending a PWM (Pulse Width Modulation) signal and a relay control signal; after being conditioned through the signal conditioning plate, the relay control signal is used for controlling a relay; the PWM signal is used for controlling a full bridge inversion circuit in the main circuit of the dust-collecting power supply through an IGBT driving circuit; and the DSP+FPGA main control panel and the upper computer have data exchange through a CAN (Controller Area Network) bus. The automatic control system provided by the invention has the advantages that the data running is more stable, the system safety is high, the monitoring efficiency is increased and the response speed for output voltage adjustment is quickened.

The invention relates to a co-cable transmission device and method for a small remotely controlled underwater robot. The co-cable transmission device comprises a water module and an underwater module, and the water module and underwater module are connected through a transmission co-cable for transmitting radio frequency / alternating current power supply signals. The method includes that using a carrier technology to modulate video and data signals, after compounding with the alternating current power supply signals, realizing multi-signal transmission through a single-core coaxial cable. The co-cable transmission device for the small remotely controlled underwater robot comprises the water module and underwater module connected by the co-cable; the co-cable transmission device is low in cost, high in transmission quality, strong in anti-interference performance, capable of simultaneously transmitting power supply signals and two kinds of different radio frequency signals on the same cable, and suitable for the small remotely controlled underwater robot.

The invention belongs to the technical field of intelligent terminal charging control, and relates to an automatic power-off device and a power-off system with the same. The problems are solved that existing power-off devices are complicated in structure and low in work reliability, and batteries of intelligent terminals are difficult to protect reliably. The device is characterized in that a baseand a rotary reset disk are parallel and are fixedly connected to the two ends of a torsion spring respectively; the interior of the rotary reset disk is conductive, the outer surface of the rotary reset disk is insulated, the rotary reset disk is fixedly provided with two sliding conductive sheets which are not in contact with each other, and a current path is formed between the two sliding conductive sheets; a mains input binding post and a controllable power output binding post which are fixedly arranged on the insulating base are matched with the two sliding conductive sheets respectively; the base, an electromagnet, an elastic piece and a positioning bayonet are sequentially and fixedly connected; the rotary reset disk is provided with a positioning hole matched with the positioningbayonet; the electromagnet, an electromagnet power supply and a controller are sequentially connected; the magnetic force of the electromagnet is greater than that of the elastic piece. The inventionfurther discloses the power-off system with the automatic power-off device.

The invention relates to the technical field of display, in particular to a display control system. The display control system with configuration updated by the adoption of a mobile storage device comprises a display screen and a control module, wherein the control module comprises a miniature processor system, the miniature processor system is connected with a display output interface and an information input interface, and the display output interface is used for connecting the display screen. The information input interface is a USB interface, the USB interface is used for connecting the mobile storage device, and display information is stored in the mobile storage device. Due to the fact that the technical scheme is adopted, the display control system is simple, convenient and reliable in signal transmission, and the control module is applicable to display screens with various resolution ratios.

The invention provides a bent type jack contact for a crown spring. The bent type jack contact consists of a bent type jack and a crown spring type contact ring. The tail end of the bent type jack is in a 90-degree bent structure; no inner space for mounting the crown spring type contact ring exists in equipment at a butt-joint end; and the crown spring type contact ring is fixed in the bent type jack through interference fit of an inner hole. The bent type jack contact provided by the invention has the advantages of simple structure, high machining efficiency, high machining precision of the 90-degree bent part, good consistency, reliable signal transmission, simple assembly and good structure stability, and can be used for effectively ensuring the direction of a bending pin. The bent type jack contact is applicable to a bend-plug type circuit connector for a printed board, and has the advantages of smaller contact distance, light plug force requirement and large contact row quantity.

The invention discloses a Wi-Fi router intelligent antenna user tracking method and system. The method comprises the steps of: S1. receiving control message protocol response information sent by user equipment, and acquiring and recording a first round-trip delay; S2. rotating an antenna, and acquiring and recording a second round-trip delay; and S3. comparing the first round-trip delay and the second round-trip delay, rotating the antenna according to a comparison result, and acquiring and recording a new round-trip delay until the newly acquired round-trip delay is greater than a previously acquired round-trip delay. According to the Wi-Fi router intelligent antenna user tracking method and system disclosed by the invention, by using a directional antenna on a Wi-Fi router device, according to a round-trip delay of the user equipment and a router, an antenna angle is automatically calculated and regulated so as to achieve an optimal transmission angle and keep reliable and stable signal transmission always being established between the user equipment and the router. Moreover, according to the Wi-Fi router intelligent antenna user tracking method and system disclosed by the invention, the round-trip delay between the router and the user equipment is tested by a control message protocol; and the method is simple and effective and is very practical.

The present invention discloses one display base plate and one LCD with the base plate. The display base plate includes one transparent substrate, and on transparent substrate, there are the one first metal layer, one dielectric layer and one second metal layer to constitute one filter capacitor. The first metal layer is connected to the circuit with potential lower than that of the second metal layer, and the filter capacitor can filter out clutter from the passing current to make signal stable and clear. Therefore, the display base plate and the LCD with the base plate have reliable signal transmission.

The invention relates to a remote commanding system, including: broadcast hosts, microphones and monitors at the center-side; and amplifiers, speakers, microphones, image acquisition devices and detectors at remote end. The broadcast host includes an MCU center processor, a multi-signal input and output processing unit, a channel controller, an input interface, a channel interface and / or a USB interface. The amplifier includes an interface recognizing and squelching unit, and a low-frequency suppression unit below 100Hz. The optical transmitter and receiver includes a digital signal processor, an interface identifier, a D / A converter and an A / D converter, a pre-amplifier, an optical drive and optical interfaces. The inventive remote commanding system has advantages of: easy expansion of the number of the remote terminals which are composed by optical fiber transmission and flexible matching outdoor type amplifiers; capability of optionally selecting the remote region and monitoring and returning back to the remote; reliable signal transmission; easy operation; and dependable guarantee to the remote command.

The invention discloses a declinator probe for boring, which includes a bushing and two joints connected at the two ends of the bushing by screw thread. The probe is characterized in that the upper and lower ends in the bushing are respectively provided with a fixing frame and a measuring frame. The fixing frame is provided with an input-output interface, a power supply, a control circuit and a stepper motor. The measuring frame is provided with an obliquity sensor and an orientation sensor; the two ends of the measuring frame are provided with rotary shafts; one joint is provided with a bearing seat; the fixing frame is fixedly connected with the inner wall of the bushing; one end of the measuring frame is supported on the bearing seat by the rotary shaft; the rotary shaft arranged at the other end is connected with the stepper motor through a shaft joint. The invention has reasonable design and simple structure. The declinator probe adopts the technology of obliquity sensing which avoids the accurate measuring of the orientation and obliquity being affected caused by that an imbalance block is not in place, thus ensuring the precision of measuring with the advantages of convenient debugging and being free from maintenance after installation when the obliquity of boring is smaller than 3 degrees.

The invention provides a miniaturized crown spring type socket joint, comprising a protective tube and pins; The protective tube is sleeved and fixed in the base, the protective tube is provided witha contact ring, and the pins are sleeved at the rear ends of the protective tube and the contact ring; the protective tube and the base are in transition fit, the pin is in contact with the protectivetube, the contact ring and the base at the same time, and the contact surface of the pin and the base is interference fit with pin braces. As that invention does not need rivet and spot welding, theinvention can be realized only by press-fitting the protective tube of the installed contact ring and the pin, and it is extremely easy to develop the matching automatic assembly equipment, thereby greatly improving the assembly efficiency and reducing the cost; The direct interference contact area between the protective tube and the pin is larger, the contact resistance is more stable, and the risk of excess solder entering is lower, thus ensuring the reliability of signal transmission.

A UWB (ultra-wide bandwidth) ranging based anchoring device for a transformer substation is formed by connecting a UWB core module (1) with an optical fiber transceiver (2), a UWB antenna (3) and a power control module (4), the optical fiber transceiver (2) is further connected with the power control module (4), and the whole anchoring device is arranged in a shell (5). The UWB ranging based anchoring device for the transformer substation is used for achieving safety use in a strong electric field environment and under the remote distance condition. Real-time tracking monitoring of a moving target in the transformer substation is carried out by the aid of the high-precision real-time positioning technology, three-dimensional positioning precision is less than 40 centimeters in distance, and safety of the moving target position is judged by combining equipment energized conditions with safety distance. The UWB ranging based anchoring device for the transformer substation is combined with safety area monitoring to acquire real-time positions of personnel in the transformer substation field and update the positions to a three-dimensional virtual scene in real time, so that the personnel positions in the three-dimensional virtual scene and the personnel positions in an actual scene are kept synchronous.

The invention, which belongs to the technical field of stroke detection, provides a differential Hall multi-turn-position absolute position sensor and a detection method thereof. The differential Hallmulti-turn-position absolute position sensor comprises a first detection module and a controller. The first detection module includes a first rotation device, a first magnetic component, a first Hallangle sensor, and a controller. The first rotation device connected with an output shaft of an actuator rotates at a set first transmission ratio under driving of the output shaft. The first magneticcomponent is disposed on the first rotation device. The first Hall angle sensor corresponding to the first magnetic component acquires a first angle of rotation of the first rotation device in real time. The controller calculates a stroke of the actuator based on the first angle and the first transmission ratio. According to the invention, non-contact detection is performed based on the Hall principle; and all parts and a detection result are protected from being affected by vibration of a harsh environment of actuator mounting and the like, so that the service life of the sensor is prolongedeffectively and the measurement accuracy is improved. Meanwhile, the transmission signal of the Hall principle is a digital signal; the anti-interference ability is powerful; and the signal transmission is reliable.

The invention discloses a portable field detection device used for an anti-falling safety device of a rack and pinion building hoist. The portable field detection device comprises a sensor, a data acquisition analyzer and an output device which are sequentially connected, wherein the sensor and the data acquisition analyzer are connected through a shielding data line; the sensor is a pull rope type distance sensor, the sensor is provided with a pull rope and is fixed on a guide rail bracket of the rack and pinion building hoist, and the pull rope is connected with a cage in which the anti-falling safety device is arranged. According to the portable field detection device disclosed by the invention, the pull rope type distance sensor is used as the sensor, and when the device is used, the base can be conveniently clamped on a horizontal web member angle iron of any base section of the guide rail bracket, the base is locked through a bolt, and the detect that the meshing of the rack and the pinion of a rotary encoder in the existing detection device can not be easily adjusted to be smooth is effectively avoided. The portable field detection device is suitable for the detection of the anti-falling safety device of the rack and pinion building hoist, and is also suitable for the detection of the anti-falling safety device of equipment which has the similar structure, such as an elevator, and the range of application of the device is wider.

A RF communication system includes a speaker microphone connector connecting a communication station with a communication unit to transmit an audio signal and RF signal therebetween. The speaker microphone connector includes an audio cable, a RF cable and a tubular enclosing shelter enclosing the audio cable and the RF cable therein, wherein an end portion of the RF cable extends out of the enclosing shelter between first and second ends thereof such that the end portion of the RF cable is split with the audio cable to individually connect to the communication station. In addition, a retaining device is provided at the enclosing shelter to retain the RF cable and the audio cable in a splitting manner.

The invention discloses an FPGA-based method for realizing video and command functions of an MIPI signal and an apparatus thereof. According to the method, on the basis of an MIPI DIS protocol and a DCS protocol, the MIPI video data flow function and command function and signals can be realized simultaneously; and transmission to an MIP module group is also realized based on an HSDT transmission mode and an LPDT transmission mode that are regulated by the MIPI DSO protocol. In addition, the apparatus consists of an MIPI control module, an RGB conversion module, a video synchronization module, a video blanking control module, a video data module, a video cache module, a command data module, a command cache module, an MIPI package allocation module, an HS transmission module, an HS signal generation module, an LPDT cache module, an LPDT transmission module, and an MIPI signal output module. Therefore, video and command display modes of MIPI signals are realized by in one FPGA chip according to the MIPI DIS protocol.

The invention relates to an illumination-intensity-adjustable no flickering visible light communication transmitting end controller. The controller comprises a constant current source driving circuit and a digital RLL coding module, wherein the constant current source driving circuit comprises a constant current source parameter selection device and a constant current source circuit, the digital RLL coding module comprises an RLL coding mode selection device and an RLL coding circuit, and the constant current source circuit is under the control of the constant current source parameter selection device to carry out real-time constant current parameter adjustment, and the RLL coding circuit is under the control of the RLL coding mode selection device to carry out real-time coding mode adjustment. The controller is advantaged in that real-time brightness grade adjustment on LED lamps is realized through utilizing run length limited codes and the constant current source driving circuit, no system flickering phenomenon occurs, and high-speed signal transmission can be kept.

The invention discloses a digital product display unit and a method for controlling the same. The digital product display unit comprises a shell; the shell comprises a base, a support arm and a bracket, the support arm is arranged on the base, and the bracket is arranged at the upper end of the support arm; the bracket comprises an insertion piece, a barrel and a support plate, the barrel is arranged on an opening at the upper end of the insertion piece, the support plate is arranged on the barrel, the upper end surface of the support arm is a forwardly oblique plane, and the insertion piece is inserted into the upper portion of the support arm; the insertion piece is connected with one end of a metal rope, and the other end of the metal rope is connected with a take-up device arranged inside the support arm; and a first main control chip, a contact switch and a charging port are arranged in the barrel, the charging port extends out of a side wall of the barrel, the first main control chip is electrically connected with the metal rope, and a current detecting device is arranged on a charging wire connected with the charging port. The digital product display unit and the method have the advantages that a digital product placed on the digital product display unit can be comprehensively protected against thievery, transmitted alarm signals are stable and reliable, and false alarm is prevented.

An aircraft system (1) includes an aircraft apparatus (31) including an image capturing device (33) and a remote control (32). The remote control (32) includes a display (321), a first communication circuit (322) adapted for transmitting aircraft control signals to the aircraft apparatus (31), and a second communication circuit (323) adapted for receiving image signals of the image capturing device. The display (321) is adapted for displaying the image signals.

The invention relates to a dynamic plasma sheath phase shift keying signal decision detection method. A special law of an electromagnetic wave propagating in the plasma is used, a channel feature is predicted through measurement on a reflected wave, and a training sample is built. A signal acquisition device acquires an m-dimensional phase shift keying signal after plasma sheath, the m-dimensional phase shift keying signal is transmitted to a processing unit for decision detection processing, and a decision detection processing result is outputted. According to the dynamic plasma sheath phase shift keying signal decision detection method provided by the above technical scheme, the constellation point overlapping problem caused by dynamic plasma sheath spurious modulation effects can be effectively solved.

The invention provides a female connector, a connecting line and a transmission device between a television and a sound. The female connector comprises an insulation body, a welding lead and a contact electrode, wherein the insulation body is provided with a male connector containing cavity, and the welding lead and the contact electrode are arranged at the bottom of the male connector containing cavity; slots are further arranged on both sides of the male connector containing cavity. The connecting line comprises a multi-core cable and two male connectors connected to both ends of the multi-core cable, wherein each male connector comprises an insulation body and a metal shell, a telescopic electrode is distributed on the front end face of the insulation body; buckles and buckle release mechanisms are further arranged on both sides of the metal shell. The transmission device comprises a first female connector arranged on a television end, a second female connector arranged on a stereo end and a connecting line. The female connector, the connecting line and the transmission device have a control interaction function, an audio signal transmission function, a power supply function and a reserved extended function, so that unified control is realized, connection operation and a control mode of a user are simplified, and cost is reduced.

An aircraft system (1) includes an aircraft apparatus (31) including an image capturing device (33) and a remote control (32). The remote control (32) includes a display (321), a first communication circuit (322) adapted for transmitting aircraft control signals to the aircraft apparatus (31), and a second communication circuit (323) adapted for receiving image signals of the image capturing device. The display (321) is adapted for displaying the image signals.

The invention provides a split television which comprises a first device and a second device, the first device and the second device are respectively provided with a shell, the first device comprisesa chip, the second device comprises a display screen and a loudspeaker, the first device further comprises a first photoelectric conversion module, and the second device further comprises a second photoelectric conversion module. And the first photoelectric conversion module is used for converting the audio and video data output by the chip into an optical signal from an electric signal and transmitting the optical signal to the second photoelectric conversion module through an optical fiber. And the second photoelectric conversion module is used for receiving the audio and video data transmitted by the optical fiber, converting the audio and video data from an optical signal into an electric signal and providing the electric signal to the display screen and the loudspeaker for output. Thefirst end of the optical fiber is led out of the shell of the first device, and the second end of the optical fiber is led in from the shell of the second device. According to the invention, opticalfiber transmission of signals in the split television is realized.

The invention discloses an unmanned alert device and a realization method of an unmanned alert function under an emergency traction mode. An input end and an output end of a control unit are correspondingly connected with an unmanned alert effective action part, a sound and light alarm device and a brake executive part through hard wires. When a microcomputer network control system fails and is removed, the unmanned alert function is achieved through the control unit, the signal transmission is more reliable through the hard wires, the problem that the unmanned alert function cannot be achieved when the microcomputer network control system fails and is removed is solved, and the safety of traveling is greatly improved; and at the same time, whether the unmanned alert effective action partis continuously pressed or not pressed for a long time can be monitored, and the safety of traveling is further improved.