2046results about How to "Long transmission distance" patented technology

Optical transmitters for radio over fiber systems are disclosed. More particularly, the optical transmitters include optically-injection-locked vertical cavity surface-emitting laser devices (OIL VCSELS). The transmitters include a master laser, at least one slave laser injection-locked by the master laser, and an equalizer / filter unit that enables the ratio of the carrier power to the sideband power in the output signal of the transmitter to be varied and optimized independently of the injection ratio of the transmitter.

A method and system for efficient distribution of power using wireless means, and a system and method for wireless power distribution to provide electric devices, such as vehicles with a way to continuously and wirelessly collect, use and charge their power systems and thereby use the transmitted power for operation. The system and method allows a hybrid, simplified and less costly way to charge devices, such as vehicles so that the devices continuously operate while charging / recharging.

The invention relates to an intelligent traffic control system for controlling traffic stream in intersection. The control system is composed of a traffic signal controller, a center computer, an Ethernet communication system, a traffic lamp in intersection, and related equipment. The traffic signal controller adopts a high-accuracy real-time clock chip for providing accurate clock signal and effectively improving the accuracy of time sequence of lamp color and simultaneously can display and set time and calendar information. The traffic signal controller has a vehicle inductive detection control interface for inputting real-time traffic stream information. The microprocessor of the signal controller system can an I / O port expanded by a programmable logic controller CPLD and is used for driving the traffic lamp after photoelectrical isolation and drive circuit so as to achieve reliable color output of traffic lamp. In the invention, the signal controller is directly connected with the Ethernet through the Ethernet controller, which can effectively improve the data transmission real-time performance and reliability. The monitor center analyzes and processes the traffic stream data according to the history traffic stream information as well as the real-time traffic stream information of each intersection, and generates an optimal control scheme by an intelligent optimization method, thereby achieving regional coordination control of urban traffic stream and maximally improving the traffic efficiency of the urban traffic stream.

The invention relates to an SF6 high-voltage circuit breaker intelligent monitoring and health management system which comprises hardware and software, wherein the hardware is divided into a lower computer and an upper computer; the lower computer hardware comprises an intelligent control and processing unit based on an FPGA and an ARM, a data acquisition unit, a data storage unit, an intelligent control output unit and a CAN bus communication unit; the upper computer hardware consists of a monitoring center server unit and a PCI 1680U board card; and the communication between the upper computer and the lower computer is realized by a CAN bus network. The software is also divided into a lower computer and an upper computer, wherein the lower computer software is in charge of driving the lower computer hardware to complete mechanical, electrical and insulating state data acquisition and feature extraction, realizes intelligent reasoning and intelligent control by combining system information, and drives the CAN bus communication unit to send the result obtained by processing into the upper computer; and the upper computer software is in charge of driving the PCI 1680U board card of the upper computer to complete communication, and realizes the man-machine interaction interface and intelligent monitoring information management. The system realizes the comprehensive monitoring for the SF6 high-voltage circuit breaker state and performance.

The invention relates to a drilling information transmitting device in the field of petroleum and natural gas drilling engineering, in particular to a well drilling information acoustic wave transmission relay device based on a drilling string information channel. The well drilling information acoustic wave transmission relay device comprises an acoustic wave sensor, a modulator circuit, a power source and a transmitting transducer assembly, wherein the modulator circuit receives electric signals outputted from the acoustic wave sensor; effective data are obtained after the electric signals are processed, and are transmitted to the transmitting transducer assembly; and the power source is used for supplying power for the acoustic wave sensor, the modulator circuit and the acoustic wave transmitting transducer assembly. The well drilling information acoustic wave transmission relay device can effectively work in an underground complex environment for a long time, the transmission distance of acoustic waves in a drilling string is lengthened, effective detection and directional signal transmission are ensured, and interference of a ring is decreased.

The invention discloses a patrol robot system for an overhead high-voltage transmission line. The patrol robot system comprises a robot, the overhead line and a ground base station. The overhead line is supported through a cross bar. The robot comprises a robot body, a battery, a walking device, a single-chip microcomputer, a monitor device and a mobile communication device. The ground base station comprises a ground communication device and a ground monitor device. The ground base station and the robot are connected in a satellite communication mode. A robot platform is arranged on one side of the overhead line. The walking device comprises a walking mechanism and an obstacle avoidance mechanism. The walking device is connected with the single-chip microcomputer. The monitor range of the patrol robot is wider, environmental interference resistance is higher, the better obstacle avoidance mechanism is provided, a rest area is provided for the patrol robot, the service life of the patrol robot is prolonged, an automatic charging device is provided, work loads of workers are reduced, and the work of patrolling high-voltage lines and ultra-high-voltage lines can be completed excellently.

The invention relates to optical communication, in particular to compensation of non-linear distortions incurred in high bit-rate optical communication systems. A method and system for compensating self-phase modulation at an optical receiver of an optical transmission system using polarization division multiplexing and a modulation scheme with constant amplitude is proposed. The method comprises the step of performing a phase modulation on a received signal, wherein the received signal comprises two signal components associated with two orthogonal polarizations, each component comprising an in-phase sub-component and a quadrature-phase sub-component, thereby spanning a four-dimensional space. The phase modulation is determined by evaluating an error signal which depends on the distance in the four-dimensional space between the received signal after the phase modulation and a four-dimensional sphere defined by target constellation points of the optical transmission system.

The invention embodiment discloses a method and a device for forwarding a data frame based on line bundle. The method for forwarding the data frame based on line bundle comprises the following steps: acquiring a first data frame transmitted by a user side or a network side; dividing the first data frame when the first data frame is greater than the maximum transmission unit MTU of any access linebundled to the user, wherein the sub data frames obtained from division are all less than or equal to the MTU; adding logical identifiers corresponding to the access line bundled to the user to the sub data frames; and transmitting a second data frame comprising the sub data frames and the logical identifiers of the sub data frames so that the data frame can be reformed after being received at anopposite end. The method and the device for forwarding the data frame based on the line bundle increase the bandwidth of the access line, prolong the transmission distance and improve the transmission reliability on the basis of ensuring the transmission quality of the access line.

The invention discloses a mine mobile communication system, which consists of an Ethernet passive optical network of a double-bus or double-loop structure, a wireless access network, a control system and an explosion-proof mobile station. The system comprises an optical link terminal, a base station controller, a ground base station, office-end equipment, passive optical splitters, explosion-proof optical network terminals, an underground explosion-proof base station, leakage antennae, base station antennae, distributed antennae and the explosion-proof mobile station, wherein the optical link terminal is connected with the ground base station and the base station controller; the explosion-proof optical network terminals are connected with the underground explosion-proof base station; the underground explosion-proof base station is connected with the leakage antennae, the base station antennae and the distributed antennae; and the explosion-proof mobile station is connected with the underground explosion-proof base station and the ground base station through a wireless interface. The mine mobile communication system has the characteristics of simple structure, flexible deployment, convenient maintenance, relatively lower cost, strong disaster resistance and anti-jamming capacity, capability of eliminating dead zones in communication and meeting requirements on a specific service environment and security for mining, and suitability for underground mobile communication in a coal mine.

The invention discloses communication method and system based on PCIe (peripheral component interconnect express) data exchange. The method includes the steps of firstly, starting a PCIe switch and subjecting a processor and a PCIe terminal communicated with the PCI3 switch to PCIe equipment search and configuration; secondly, allowing the processor or PCIe terminal to transmit a PCIe read-write request to a port of the PCIe switch according to routing information, allowing the port to structure the PCIe read-write request into a data packet by means of packet format compatible with standard PCIe link layer protocol and extensible routing compatible with standard PCIe routing, and transmitting the data packet to a corresponding port; and thirdly, allowing the corresponding port to restore the data packet into the PCIe read-write request and transmit the request to the processor or PCIe terminal. Multi-processor communication based on PCIe link is achieved by the extended PCIe protocol, and any topological extensible interconnection networks are established.

The invention provides a system and a method for detecting a fire hazard based on wireless multi-sensor information fusion. The system comprises a sensor terminal node and an intelligent gateway, wherein the sensor terminal node establishes a data transmission network of a fire hazard monitoring field by using the ZigBee technology; the intelligent gateway is accessed into the Internet and a general packet radio service GPRS (general packet radio service) network based on an ARM11S3C6410 (Advanced RISC Machine 11S3C6410) chip; and a user can obtain the monitoring information while accessing to an embedded server. Once the fire hazard is detected, the alarm information is transmitted to a cell phone of the user through a GPRS module; a plurality of sensors of smoke, temperature, carbon monoxide CO gas and the like are utilized to sense the burning state of the fire; different trust degree functions are distributed according to that whether the fire hazard happens; and a D-S evidence theory is fused with three sensor information so as to judge the state of the fire hazard. With the adoption of the system and the method, the defect of wired scheme of a traditional fire hazard monitoring system is modified; and the system and the method can be used in families and industrial environments with wiring inconvenience and reduced cost widely.

The invention discloses an underwater wireless acousto-optic communication device and method. The underwater wireless acousto-optic communication device comprises a water depth and posture measurement module, an acoustic communication module, a main control panel, a theodolite, a pulse blue-green laser, a laser emission telescope, a receiving telescope, a photoelectric detection and signal conditioning module and a high-speed data acquisition module. The underwater wireless acousto-optic communication device comprehensively utilizes the characteristics of an acoustic signal which is low in rate, but large in sidelobe and long in transmission distance and the characteristics of an optic signal which is high in communication rate, good in directivity and longer in transmission distance, realizes underwater high-speed information transmission in a longer distance, and has the characteristics of small size, light weight, high integration level, good reliability and high performance-cost ratio.

The invention relates to a debugging method for a + / - 800 kV ultra-high voltage direct-current transmission project system. The system comprises convertor stations at two ends and a direct-current transmission line. The debugging method for the + / - 800 kV ultra-high voltage direct-current transmission project system comprises the following steps that (I) the + / - 800 kV ultra-high voltage direct-current transmission project system is subjected to calculation and analysis; (II) a debugging scheme for the + / - 800 kV ultra-high voltage direct-current transmission project system is formed; (III) a debugging plan for the + / - 800 kV ultra-high voltage direct-current transmission project system is made; (IV) the + / - 800 kV ultra-high voltage direct-current transmission project system is subjected to a field debugging test; (V) the + / - 800 kV ultra-high voltage direct-current transmission project system is subjected to a pilot run; (VI) the + / - 800 kV ultra-high voltage direct-current transmission project system is subjected to a debugging summary. According to the debugging method for the + / - 800 kV ultra-high voltage direct-current transmission project system, a single current converter and a monopolar and bipolar system debugging test are combined for the first time, therefore, the efficiency of a system debugging test is improved, the system debugging speed is increased, good conditions are created for finishing system debugging in advance, and experience and reference are provided for the debugging of a direct-current transmission project system in future.

The invention discloses a self-tracking servo control system for a flat plate with high integration and high precision. The self-tracking servo control system comprises a monitoring computer, a servo controller, a PWM driver, a direct current motor, a speed measurer, a transmission mechanism, a rotary transformer, a flat plate antenna and a support rotating mechanism, wherein the monitoring computer receives working conditions and issues control commands; the servo controller receives the control commands issued by the monitoring computer, reads antenna angle position information and receiver angle error information, closes a position loop, tracks the closed loop, and outputs analog controlled quantity to the PWM driver; the PWM driver closes a speed lop and a current loop to drive the direct current motor to further drive the flat plate antenna by the transmission mechanism to rotate; the flat plate antenna receives high frequency telemetry signals; the transmission mechanism, the flat plate antenna and the support rotating mechanism jointly constitute an antenna pedestal; the servo controller, the PWM driver, the direct current motor, the speed measurer, and the rotary transformer are installed on the antenna pedestal; the self-tracking servo control system has the advantages of small volume, light weight, low energy consumption and high integration level.

The invention discloses an integral wired-wireless optical fiber asymmetric full-duplex access method and system. A light with the frequency being f0 is divided into two beams; one beam is modulated by a high-speed QAM (Quadrature Amplitude Modulation) millimeter-wave signal single side band with the frequency being fRF to generate a light carrier OLO1 (Optical Line Output 1) and a signal side band BBD with same polarization; and the other beam is inhibited and modulated by a local oscillator carrier with the frequency being fRF to generate an OLO2 with the same frequency as the BBD, after the OLO2 is orthogonal and combined with the OLO1, excess optical frequency components are filtered, and a downward infusion optical signal is generated. The infusion optical signal is transmitted to a base station through optical fiber, and can provide wired or wireless access. When the base station is accessed in a wired manner, a wavelength interpolation device separates the OLO2, the BBD from the OLO1, the OLO2 is subjected to coherent demodulation so as to obtain a downlink baseband signal, and the OLO1 carries an uplink low-speed signal and is back to a central station through the optical fiber; and when the base station is wirelessly accessed, a polarization beam splitter separates the OLO1, the BBD and the OLO2, the OLO1 is an optical millimeter-wave signal and is converted to electrical millimeter-wave through a photoelectric detector, and the OLO2 carries an uplink low-speed millimeter-wave signal and is back to the central station through the optical fiber, so that wired or wireless asymmetric full-duplex access is realized.

The invention provides an automatic voltage control system of a power plant substation, which comprises a plurality of lower computers, a master upper computer, a standby upper computer, a background computer, a movable communication unit, a power plant decentralized control system (DCS), a plant unit automatic voltage regulator (AVR), a controller area network (CAN), a network communication channel and a power data network, wherein the upper computer and the lower computer intercommunicate in the controller area network (CAN); the upper computer and the background computer communicate through the network communication channel; and the upper computer and the master station communicate in the power data network. The scheme of the invention fully considers the actual field situation of the power plant and has the characteristic of strong applicability.

The present invention is cable running safety monitoring method, evaluation method and device, and belongs to the field of cable running safety monitoring technology. The cable running safety monitoring method is to monitor overheat of cable wires and send alarm based on the preset fixed threshold and trend threshold. The cable running safety evaluation method includes recording cable surface temperature, environment temperature and cable current value regularly, establishing cable surface temperature regression model, predicting cable surface temperature trend, and performing the mathematic analysis on the predicted value and the measured value residual error to evaluate the cable running status. The present invention also proposes equipment comprising temperature measuring element, data transmission line, data acquiring circuit module, data converting circuit and computer. The present invention has temperature measuring precision up to 0.5 deg.c, fast storing and other advantages.

The invention discloses a positioning system and method in a ship compartment. The positioning method comprises the following steps: transmitting information including ID, a transmitting signal intensity value and the like through broadcast frames by positioning beacons arranged in the compartment; enabling people carrying positioning tags to enter the compartment, scanning and receiving ID of themultiple positioning beacons and a receiving signal intensity value RSSI by Bluetooth modules of the positioning tags, and then sending out the information and positioning tag ID wirelessly through aLoRa module; and receiving the information sent out by the positioning tags and then forwarding the information to a positioning server by a communication base station, calculating the value of the distance between each positioning tag and the corresponding positioning beacon by the receiving signal intensity value and the transmitting signal intensity value, and then acquiring the position information of the positioning tags in the compartment through a positioning algorithm. The positioning system can stably run in a severe environment which is high in dust concentration, obvious in vibration and large in noise and is filled with paint volatiles, the positioning precision can be high, and positioning requirements in a construction environment can be met.

The invention discloses a system and a method for achieving network reconfigurability of a mixed WDM (Wavelength Division Multiplexing) / TDM (Time Division Multiplexing) PON (Passive Optical Network). In the system, one optical line terminal is adopted and is sequentially connected with n remote end nodes through double fiber feeder lines, and all remote end nodes are respectively connected with m optical network units by using a shunt through distributed optical fibers; wherein each remote end node adopts one reconfigurable optical add / drop multiplexer based on a wavelength blocker and a tunable optical filter technology so as to realize the function of reconfiguring a network downlink signal wavelength resource, the reconfiguration of an uplink is realized by utilizing a wavelength re-modulation technology based on a reflection type semiconductor optical amplifier, and meanwhile, the system can improve the network reconfiguration property when confronting certain optical fiber faults. The method ensures that in the network, the wavelength resource of the network can be flexibly reconfigured according to changing bandwidth requirements, and meanwhile, the reconfiguration capability of the mixed PON on confronting emergencies can be realized by using one backup feeder line optical fiber loop and a series of switch transformation, thereby ensuring the network to be with better reliability.

This invention discloses a high speed SPI bus and its working method including at least one master module, a slave module, a SCLK clock output signal line in SPI, MOSI data line, MISO data line, SS gating signal line and configured signal line SCFG, in which, a variable bus T / R device FPGA / CPLD set in the master module, and a bus R / T device FPGA / CPLD in the slave module compose a bus configured transceiver, the FPGA / CPLD of the master module is connected with the FPGA / CPLD of one of the slave modules by serial-cascading configured signal line SCFG, and said FPGA / CPLD of the slave module are serial to those of other slave modules by the SCFG, at the same time, the SPI of the master module is connected with other slave modules via STP and carries out difference process to the SPI bus signals.

The invention discloses a responder, and belongs to the field of railway communication signal equipment. The responder comprises a responder onboard equipment communication interface unit and a responder roadside electronic equipment interface unit, wherein the responder roadside electronic equipment interface unit is provided with a responder information loopback interface module; the responder onboard equipment communication interface unit and the responder roadside electronic equipment interface unit are in communication link to send message data to onboard equipment; and the responder roadside electronic equipment interface unit and the responder onboard equipment communication interface unit of the responder are in communication link to connect and communicate with roadside electronic equipment, to receive message data output by the roadside electronic equipment and transmit the message data to the onboard equipment through the onboard equipment communication interface unit, and to output and transfer information reflecting working conditions of the responder and activation to the roadside electronic equipment through low-frequency signals generated by a responder information loopback interface module. The responder can feed back the signals accurately, and the communication distance can reach more than 4 kilometers.

An optical fiber connected body including a first optical fiber having a core and a clad, and a second optical fiber having a core and a clad, with its end connected optically to an end of the first optical fiber, in which the core center of the first optical fiber and the core center of the second optical fiber are mutually deviated at the interface of the first optical fiber and the second optical fiber, a light beam entering the second optical fiber from the first optical fiber is inclined to the central axis of the second optical fiber.

The invention is suitable for the technical field of the internet of vehicles, and provides a vehicle locating and tracking system and locating and tracking method. The vehicle locating and tracking system comprises a base station organizing an LoRa communication network; a vehicle-mounted terminal having an ultra-long distance spread spectrum LoRa communication module; a locating device which is connected with the vehicle-mounted terminal through the LoRa communication module of the locating device and transmits vehicle locating information by utilizing the LoRa communication network; and a mobile communication terminal which receives the vehicle locating information, wherein the LoRa communication network is a wireless network using the LoRa technology. Signal transmission between the vehicle-mounted terminal, the locating device, the base station and the mobile communication terminal adopts the LoRa wireless communication technology so that a user is enabled to perform long-distance locating and tracking of outdoor and indoor vehicles anytime and anywhere through the mobile communication terminal, and thus range of application and locating precision can be enhanced.

The invention discloses an expandable multi-user quantum key distribution network system and a key distribution method thereof; wherein the system comprises a point-to-multipoint quantum key distribution system composed of a quantum key transmitting terminal and a plurality of quantum key receiving terminals. The key distribution method includes the steps: firstly, the quantum key transmitting terminal namely the transmitter and a plurality of quantum key receiving terminals namely the receivers carry out quantum key distribution, the transmitter and each receiver all share a random quantum key; secondly, any two receivers send a request to the transmitter, the transmitter compares the two quantum keys shared with the receivers bit by bit and sends the comparison result to the two receivers, and the two receivers can obtain the quantum key shared by the transmitter and the other receiver by combining the own quantum key shared with the transmitter. The invention is reasonable in design and convenient in use and operation, and has strong user capacity expansion capability, long transmission distance and good user functionality; and any two legal receivers can share the key.

The invention provides a synchronous control method for a heavy-duty locomotive signal based on ATP / ATO (Automatic Train Protection / Automatic Train Operation) equipment. The synchronous control method is characterized by comprising the following steps of: synchronously controlling the power distribution of a train, and synchronously transmitting wireless data, wherein each locomotive is provided with a set of identical ATP / ATO equipment for grouping; the locomotive at one end in running direction is used as the main control locomotive for the train and responsible for the communication with a train control dispatching center; meanwhile, the main control locomotive is used for calculating the power distribution according to the line conditions and the grouping conditions and transmitting a synchronous control command to a slave control locomotive; after receiving the command from the main control locomotive, the slave control locomotive can synchronously apply traction force or braking force; and a GSM-R (Global System for Mobile Communications for Railway) digital mobile communication network is adopted as a wireless communication synchronization link of the locomotive signal according to the control command between the main control locomotive and the slave control locomotive. By implementing the synchronous control method for the heavy-duty locomotive based on the ATP / ATO equipment, the safety and the reliability of the control system are greatly improved.

The invention discloses a LoRa-based remote pig house environment multi-parameter measurement and control system and a LoRa-based remote pig house environment multi-parameter measurement and control method thereof. The LoRa-based remote pig house environment multi-parameter measurement and control system comprises a LoRa terminal, an aggregation node and a pig house group master server, wherein the LoRa terminal comprises a data acquisition module, a power supply module, a controller module, an execution device and a camera module; the aggregation node comprises a LoRa module and a GPRS module; the pig house group master server comprises an on-site monitoring computer, a database module and a functional module; the data acquisition module, the power supply module and the execution device are connected with the controller module, the controller module is connected with the LoRa module via a wireless network, and the GPRS module is connected with the remote master server via an Ethernet.The functional module of the system is capable of displaying pig house on-site videos and environmental parameter values of corresponding points, so that a farmer can log into a website to check theon-site condition of a pig house remotely, thereby realizing intelligent farming. The LoRa-based remote pig house environment multi-parameter measurement and control system and the LoRa-based remote pig house environment multi-parameter measurement and control method combined with a LoRa wireless technology can realize the function of acquiring data of a plurality of terminals and simple networking, are suitable for environment monitoring of livestock breeding farms and have the advantages of remote data acquisition and low power consumption.

The invention discloses a full-duplex wired / wireless hybrid access method and system based on a passive optical network (PON) / RoF. A radio frequency local oscillator modulates optical waves to generate sidebands through an optical modulator, one path of sideband polarization is separated to form an orthogonal branch B1 and an orthogonal branch B2, the other path of sideband polarization is separated to form an orthogonal branch B3 and an orthogonal branch B4, the B1 is used for a downlink data signal, the polarization of the B3 is adjusted to be parallel to that of the B1, the B1, B2 and B3 are coupled to generate fused optical signals, the fused optical signals are transmitted to a base station through optical fibers; and the B4 is reserved into an optical local oscillator for demodulating an uplink signal. A wireless access scheme of the base station is that quadruple optical millimeter waves and uplink carrier B2 are separated through a polarization beam splitter, and a wired access scheme of the base station is that common-frequency branches B1 and B2 and uplink carrier B3 are separated through a wavelength interleaved optical filter, and coherent demodulation of the branches B1 and B2 is realized. The reserved uplink optical carriers respectively can be used for bearing uplink wired or wireless signals, the uplink wired or wireless signals are transmitted to a central station and are demodulated through the optical fibers, and a full-duplex RoF link is finished.

The invention discloses a micro-inertia measuring device based on a ZigBee wireless singlechip, which at least comprises a six-axis micro-inertia sensor, a signal plate and a battery compartment. The six-axis micro-inertia sensor is used for collecting three-axis gyroscope signals and three-axis accelerometer signals according to a control instruction received from a processor module in the signal plate and outputting the collected three-axis gyroscope signals and the collected three-axis accelerometer signals to the processor module in the signal plate; the signal plate is used for controlling the six-axis micro-inertia sensor to collect the three-axis gyroscope signals and the three-axis accelerometer signals, controlling a three-axis magnetic field meter module in the signal plate to collect three-axis magnetic field meter signals, processing the collected data signals and carrying out strapdown analysis to obtain a gesture and a course transported to a movement carrier; and the battery compartment is used for placing a battery for supplying power for the device. The micro-inertia measuring device based on the ZigBee wireless singlechip has the advantages of high precision, low power consumption, small volume, light weight and good real-time and has the function of long-distance wireless transmission.

Optical impairments such as dispersion and fibre nonlinearity are compensated by generating a pre-distorted electrical signal at the transmitter. This signal is modulated onto a carrier signal, so that it is upconverted in frequency. This up converted signal is then used to modulate an optical source. Generally the optical signal will have two sidebands, one of which has the correctly pre-distorted information and the other which is unwanted. Information in the unwanted optical sideband is either filtered optically or electrically. In the preferred embodiments, the transmitter uses a tunable semiconductor laser with an integrated electroabsorption modulator to modulate the light. The preferred receiver is a coherent receiver with a tunable local oscillator laser. The receiver uses an electrical filter to remove the information in the unwanted sideband.

The invention relates to the technical field of household control, and discloses an intelligent household system controlled by the mobile terminal. When the intelligent household system is in work, a user accesses a gateway through the mobile terminal to control a household terminal; a signal conversion device is used for converting the gateway data into an RF signal to be sent to the household terminal, wherein the RF signal has the advantages of being long in transmission distance, high in transmission capacity, and high in attenuation resistance; meanwhile, such comprehensive control mode can greatly improve the usability of a household device. The invention further provides a control method of the intelligent household system; when in connecting, a control instruction can be sent to perform distributed control for the corresponding household terminal; the household terminal feeds back the current state to the mobile terminal, thus the user can directly master the working condition of the household terminal at any time, and as a result, the convenience can be improved; the control method is high in compatibility in data conversion, and the data transmission conflict can be avoided.