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30results about How to "Guaranteed transmission distance" patented technology

Multi-rotor unmanned aerial vehicle and telemetry and telecontrol method

ActiveCN105070005AGuaranteed to be normalWith GPS/Beidou dual redundant positioning functionTransmission systemsSatellite radio beaconingFlight vehicleMobile end
The invention provides a multi-rotor unmanned aerial vehicle and a telemetry and telecontrol method to overcome the defects of multi-rotor unmanned aerial vehicles in aspects of positioning and obstacle avoidance at present. The multi-rotor unmanned aerial vehicle comprises a mobile terminal and a terminal, wherein the mobile terminal comprises a mobile terminal central processing unit, a mobile terminal positioning module, a mobile terminal data transmission module, a mobile terminal memory module, a PTZ (pan-tilt-zoom) control module, a flight control module and a radar ranging module; the terminal comprises a terminal central processing unit, a terminal data transmission module, a terminal data forwarding module and a terminal memory. The telemetry and telecontrol method comprises four steps. The multi-rotor unmanned aerial vehicle and the telemetry and telecontrol method have the benefits as follows: the radar ranging module is added to detect distances between the unmanned aerial vehicle and obstacles in real time, so that the unmanned aerial vehicle is effectively prevented from having accidents when encountering the obstacles. A historical positioning information reading method is adopted, and the aerial vehicle can return to starting positions according to historical routes in case of positioning information abnormities.
Owner:合肥佳讯科技有限公司

ECPT (Electric-field Coupled Power Transfer) system based on bilateral LC networks and parameter designing method thereof

The invention provides an ECPT (Electric-field Coupled Power Transfer) system based on bilateral LC networks. A parallel LC network is applied to a transmitting end of the system, output voltage of a full-bridge inverter circuit is enhanced to a high voltage value needed by a coupling mechanism, a series LC network is applied to a receiving end of the system, output resistance is subjected to impedance transformation, and thus, in a condition of the same coupling mechanism excitation voltage, the transmission power and the efficiency of the system are higher, and on the basis, a parameter designing method for the system is provided; and on the premise of the same transmission power, compared with a higher-order ECPT system, the transmission efficiency of the system is higher, and the parameter sensitivity is lower.
Owner:重庆华创智能科技研究院有限公司

Mineral hydraulic bracket controller, bracket control system and communication method

ActiveCN101907887AImprove transmission rate and anti-interference abilityReduced parts and costsMine roof supportsTotal factory controlCommunication interfaceControl system
The invention provides a mineral hydraulic bracket controller. The controller comprises a processor module, a first signal conditioning module, a second signal conditioning module, a first communication interface and a second communication interface, wherein the processor module generates a data frame signal or processes the data frame signal; the first signal conditioning module is connected with the first communication interface and the processor module, receives the data frame signal of a first adjacent mineral hydraulic bracket controller, reshapes and filters the data frame signal, and transmits the signal to the processor module for processing; the second signal conditioning module is connected with the second communication interface and the processor module; and the data frame signal transmitted by the processor module is received, filtered amplified and transmitted to a second adjacent mineral hydraulic bracket controller. The invention also provides a bracket controller system consisting of a plurality of mineral hydraulic bracket controllers and a corresponding communication method, so that remote transmission can be realized without a relay and a network terminator, and parts and cost can be saved.
Owner:HITACHI BUILDING TECH GUANGZHOU CO LTD

Micro intelligent sensor

The invention provides a micro intelligent sensor which comprises a shell, wherein the shell is internally provided with a circuit board as well as a battery which are arranged in a stacked mode, wherein the circuit board is provided with an antenna; and on the projection of the circuit board on a plane, the antenna is positioned at the outer side of the battery, and the distance between an emitting end of the antenna and the center of the battery is greater than the distance between a feed end of the antenna and the center of the battery. The micro intelligent sensor provided by the invention is small in volume; and the influence on a wireless signal emitted by the antenna by a shell of the battery is low, and the communication quality of the micro intelligent sensor and other devices is ensured.
Owner:网擎科技(武汉)有限公司

Annular spraying cleaning and conveying integrated device for mechanical production

The invention discloses an annular spraying cleaning and conveying integrated device for mechanical production. The device comprises a base and conveying rollers; a transmission motor is arranged on the right side of the base, a driving belt is arranged above the transmission motor, a conveying belt is arranged on the outer sides of the conveying rollers, and the conveying rollers are located above the base. According to the annular spraying cleaning and conveying integrated device for mechanical production, through arranging of a cleaning ring frame, it is ensured that the device can clean the product, the cleaning ring frame is arranged to be of a spiral disc structure, the product can be circumferentially and rotatably driven to work, the product can be subject o comprehensive cleaningwork, a water passing pipe enables a cleaning water flow to pass, a spraying head is used for spraying atomized water fog, water sources are saved, it can be ensured that the cleaning water flow is disperse evenly, and evenly covers the outer side of the product, a soft brush on a brush plate makes contact with the product, and under friction resistance effect of the soft brush and the product, incombining with the penetrating structure, in the brush plate, of a fixed rod, the brush plate can finish angle deflection.
Owner:丽水市红日保洁服务有限公司

Convenient-to-use cutting equipment based on same specification

The invention discloses convenient-to-use cutting equipment based on the same specification. The convenient-to-use cutting equipment comprises a box body, wherein a motor is fixedly connected to the top of the left side of the inner wall of the box body by virtue of a motor cabinet, a first belt pulley is fixedly connected to an output shaft of the motor, a belt is in driving connection to the surface of the first belt pulley, a second belt pulley is in driving connection to one side, which is far from the first belt pulley, of the belt, the axis of a circular plate is fixedly connected with the top of the inner wall of the box body by virtue of a bracket, a fixed rod is fixedly connected to the front surface of the circular plate, and a rotating plate is rotatably connected to the surfaceof the fixed rod. The convenient-to-use cutting equipment relates to the technical field of mechanical cutting devices. According to the convenient-to-use cutting equipment based on the same specification, the cutting is effectively performed, and movement and cutting are alternately performed, so that the cut specification can be the same every time, and manual cutting is not needed, so that theburden of workers is reduced, additionally, the cutting efficiency is greatly improved, and the cutting quality is guaranteed.
Owner:南通市三菱钢绳有限公司

Bird strike prevention equipment and bird strike prevention network control system ultra-close to airport runway and bird strike prevention network control method

The invention discloses bird strike prevention equipment and a bird strike prevention network control system ultra-close to an airport runway and a bird strike prevention network control method. The bird strike prevention network control system comprises the bird strike prevention equipment, a remote control platform and a communication network, wherein the bird strike prevention equipment is placed along the two sides of an airport runway, and the remote control platform is connected with the bird strike prevention equipment through the communication network; the bird strike prevention equipment comprises an overground part and an underground part; the overground part comprises an equipment base, an easy-breaking rod, trays and horns, the easy-breaking rod is fixedly arranged on the equipment base, a plurality of trays are fixedly arranged at the upper end of the easy-breaking rod, and the horns are fixedly arranged on the trays; the underground part comprises a buried control box. The bird strike prevention network control system solves the problems of the current bird-scaring equipment and provides the bird strike prevention equipment ultra-close to the airport runway and the network control scheme thereof. Following the easy-breaking principle, the system regularly distributes sound scaring equipment on the two sides ultra-close to the airport runway by utilizing the international standard easy-breaking rod, belonging to domestic initiation. The sound scaring equipment carries out sound scaring according to the activity routines of birds so as to achieve the best bird-scaring effect.
Owner:SHANDONG NORMAL UNIV +1

Optical module based on XFP long distance transmission

The invention relates to an optical module based on XFP long distance transmission. The optical module comprises a shell. A master chip, a distributed feedback laser, an optical receiving component and an MCU controller are arranged in the shell. The optical receiving component comprises an avalanche photodiode and a trans-impedance amplifier. An equalizer, a first clock data recovery circuit, an amplitude limiting amplifier, a distributed feedback laser driver and a second clock data recovery circuit are integrated in the master chip. The previous high-cost refrigeration type laser is replaced by the distributed feedback laser, the laser driver is replaced according to the requirements and the transmission distance can be 60km so that the overall cost of the optical module can be reduced under the condition of guaranteeing the transmission distance, the design complexity can be reduced and the number of devices can be reduced, and the difficulty of the manufacturing technology can be reduced.
Owner:WUHAN FIBERPON TECH

An easy-to-use cutting device based on the same specifications

The invention discloses convenient-to-use cutting equipment based on the same specification. The convenient-to-use cutting equipment comprises a box body, wherein a motor is fixedly connected to the top of the left side of the inner wall of the box body by virtue of a motor cabinet, a first belt pulley is fixedly connected to an output shaft of the motor, a belt is in driving connection to the surface of the first belt pulley, a second belt pulley is in driving connection to one side, which is far from the first belt pulley, of the belt, the axis of a circular plate is fixedly connected with the top of the inner wall of the box body by virtue of a bracket, a fixed rod is fixedly connected to the front surface of the circular plate, and a rotating plate is rotatably connected to the surfaceof the fixed rod. The convenient-to-use cutting equipment relates to the technical field of mechanical cutting devices. According to the convenient-to-use cutting equipment based on the same specification, the cutting is effectively performed, and movement and cutting are alternately performed, so that the cut specification can be the same every time, and manual cutting is not needed, so that theburden of workers is reduced, additionally, the cutting efficiency is greatly improved, and the cutting quality is guaranteed.
Owner:南通市三菱钢绳有限公司

Wireless communication method and wireless terminal for photovoltaic power generation monitoring

The present invention belongs to the communication technology field, and provides a wireless communication method for photovoltaic generation monitoring and a wireless terminal for photovoltaic generation monitoring. The method comprises: decrypting pre-receiving first linear frequency modulation and spread spectrum signals, obtaining decryption message, extracting user data from the decryption message, determining a target serial port address, assembling the user data to the serial port message according to the pre-obtained serial port protocol format, transmitting the serial port message to a target serial port address, and verifying the monitoring data fed back by the target serial port address, if the verification is successful, packing the monitoring data and the identity identification to data message according to the pre-obtained communication protocol, performing encryption of the data message to form encryption message, and converting the encryption message to second linear frequency modulation and spread spectrum signals for transmission. The wireless communication method for photovoltaic generation monitoring and the wireless terminal for photovoltaic generation monitoring can improve the information transmission efficiency, ensure the transmission distance, avoid damaging of a communication cable and reduce the communication interference and cost.
Owner:夏德华

A transmission method and device based on power line communication

The embodiment of the present invention discloses a transmission method and device based on power line communication, including: receiving an instruction to acquire a signal or receiving an instruction to send a signal; when an electronic device receives an instruction to acquire a signal, send Open the signal to disconnect the sending power line, send a closing signal to the receiving switch on the receiving power line to close the receiving power line; when the electronic device receives the instruction to send the signal, send a disconnecting signal to the receiving switch on the receiving power line to disconnect the receiving The power line sends a close signal to the transmission switch on the transmission power line to close the transmission power line. By sending the closing signal and the disconnecting signal to the sending switch and the receiving switch, so that the sending power line and the receiving power line will not be connected to the electronic device at the same time, the transmission power of the electronic device and the transmission distance of the signal are guaranteed, and the connection between the electronic device and the sending power line is improved. The communication success rate of the terminal can be improved, and the efficiency of electronic equipment to send signals can be improved.
Owner:HUAWEI TECH CO LTD

Conveying-angle-adjustable conveying device for battery production and transportation

The invention is suitable for the field of battery production, and provides a conveying angle-adjustable conveying device for battery production and transportation, the conveying angle-adjustable conveying device comprises a bottom plate, two belt wheels are symmetrically arranged on the bottom plate, and the two sides of one belt wheel are rotationally connected with the bottom plate through mounting plates; a first conveying belt with the edge provided with a barrier strip is arranged between the two belt wheels in a sleeving mode, and a plurality of protrusions are arranged on the first conveying belt at equal intervals. The end, away from the driving device, of the yoke plate is connected with a supporting rod which is in rolling connection with the bottom plate and connected with a power assembly arranged on the bottom plate, the end, connected with the yoke plate, of the supporting rod is provided with an inclined plate, and a second conveying belt is installed on the inclined plate. The bottom plate is further connected with a storage barrel movably arranged above the first conveying belt through two symmetrically-arranged extending assemblies, and the conveying distance of the conveying belt is not affected while the angle of the conveying belt is adjusted.
Owner:刘小强

An Ethernet interface anti-surge circuit

The present invention proposes an anti-surge circuit for an Ethernet interface. By setting a power supply protection circuit, it mainly protects the differential mode protection of live wires and neutral wires and the common mode protection of live wires to ground and neutral wires to ground; The protection circuit can choose different paths for the positive and negative currents to absorb the high-power current and play a protective role; by setting the first-level protection circuit and the second-level protection circuit in the protection circuit, the differential mode protection capability of the network port is enhanced. And it will not affect the network transmission performance, can guarantee the original network transmission distance and transmission speed, the network transmission distance and network port waveform can meet the specification requirements, and has a good lightning protection effect.
Owner:罗山县三通达电子科技有限公司

Ethernet interface surge preventive circuit

The invention provides an Ethernet interface surge preventive circuit. A power protection circuit is used to realize differential mode protection for live wire and zero line parts and common mode protection for live wire grounding and zero line grounding; a POE buckle plate protection circuit is arranged to selected different paths for positive and negative currents to absorb large power current and play a protection role; and the protection circuit is provided primary and secondary protection circuits, the differential mode protection capability of the network port is enhanced, transmission performance of the network is not influenced, original network transmission distance and speed can be ensured, the network transmission distance and network port waveform can meet the standards, and alightning protection effect is good.
Owner:罗山县三通达电子科技有限公司

Remote control aid, remote control and remote control system

A remote control auxiliary device, a remote control and a remote control system. The remote control auxiliary device includes an antenna assembly (1) for connecting with a remote control; a control circuit (2) for sending a connection signal to the remote control after being connected with the remote control To instruct the remote control to reduce the transmitting power to the preset power value.
Owner:SZ DJI TECH CO LTD

Wireless AP signal intensity guarantee equipment

InactiveCN105636246ATransmission distance guaranteeEasy to useWireless communicationWater seepageEngineering
The invention discloses wireless AP signal intensity guarantee equipment, which comprises a support and a housing. One side surface of the upper end of the support is provided with a first wireless AP; the first wireless AP is connected with a storage battery; the housing is fixedly arranged at the top end of the support; the upper surface of the housing is provided with N first water seepage holes, and the lower surface of the housing is provided with M second water seepage holes, wherein the diameter of each first water seepage hole is larger than that of each second water seepage hole; the inner wall of the left side of the housing is provided with a first contact; the inner wall of the right side of the housing is provided with a second contact; one end of a first wire is connected with the positive pole of the storage battery, and the other end of the first wire is connected with the first contact; and one end of a second wire is connected with the negative pole of the storage battery, and the other end of the second wire is connected with a second first wireless AP and is then, connected with the second contact. The technical effects that, during rainy days, wireless AP signal intensity is less influenced, the transmission distance is guaranteed, and the guarantee equipment is convenient for users to use are realized.
Owner:CHENGDU PUNUO TECH CO LTD

A multi-rotor unmanned aerial vehicle and telemetry and remote control method

ActiveCN105070005BGuaranteed to be normalWith GPS/Beidou dual redundant positioning functionTransmission systemsSatellite radio beaconingPan tilt zoomEngineering
The invention provides a multi-rotor unmanned aerial vehicle and a telemetry and telecontrol method to overcome the defects of multi-rotor unmanned aerial vehicles in aspects of positioning and obstacle avoidance at present. The multi-rotor unmanned aerial vehicle comprises a mobile terminal and a terminal, wherein the mobile terminal comprises a mobile terminal central processing unit, a mobile terminal positioning module, a mobile terminal data transmission module, a mobile terminal memory module, a PTZ (pan-tilt-zoom) control module, a flight control module and a radar ranging module; the terminal comprises a terminal central processing unit, a terminal data transmission module, a terminal data forwarding module and a terminal memory. The telemetry and telecontrol method comprises four steps. The multi-rotor unmanned aerial vehicle and the telemetry and telecontrol method have the benefits as follows: the radar ranging module is added to detect distances between the unmanned aerial vehicle and obstacles in real time, so that the unmanned aerial vehicle is effectively prevented from having accidents when encountering the obstacles. A historical positioning information reading method is adopted, and the aerial vehicle can return to starting positions according to historical routes in case of positioning information abnormities.
Owner:合肥佳讯科技有限公司

Automatic paper feeding table with width adjusting function for corrugated board processing

The invention discloses an automatic paper feeding table with a width adjusting function for corrugated board processing, and belongs to the technical field of corrugated board processing equipment. The automatic paper feeding table comprises a fixed table, multiple sets of electric hydraulic rods are evenly connected to the bottom of the fixed table, and a base plate is fixedly connected to the bottoms of the electric hydraulic rods; universal wheels are evenly connected to the bottom of the base plate, rotating rods are arranged on the left side and the right side of an inner cavity of the fixed table, rotating rollers are fixedly connected to the peripheries of the two rotating rods in a sleeving mode, and mounting holes are formed in the positions, corresponding to the front end facesand the rear end faces of the two rotating rods, of the inner wall of the fixed table in a penetrating mode. The width of the device can be adjusted according to corrugated paper of different sizes, it is guaranteed that the corrugated paper can be placed in an aligned mode in the conveying process, the device will not cause the accumulation of corrugated boards during transportation, the conveying precision of the device is improved, in addition, the device can guarantee the transmission distance of the corrugated paper in the process of transportation, and therefore, the transmission efficiency of the device is improved.
Owner:江门市金钩包装机械有限公司

Wireless communication method for photovoltaic generation monitoring and wireless terminal for photovoltaic generation monitoring

The present invention belongs to the communication technology field, and provides a wireless communication method for photovoltaic generation monitoring and a wireless terminal for photovoltaic generation monitoring. The method comprises: decrypting pre-receiving first linear frequency modulation and spread spectrum signals, obtaining decryption message, extracting user data from the decryption message, determining a target serial port address, assembling the user data to the serial port message according to the pre-obtained serial port protocol format, transmitting the serial port message to a target serial port address, and verifying the monitoring data fed back by the target serial port address, if the verification is successful, packing the monitoring data and the identity identification to data message according to the pre-obtained communication protocol, performing encryption of the data message to form encryption message, and converting the encryption message to second linear frequency modulation and spread spectrum signals for transmission. The wireless communication method for photovoltaic generation monitoring and the wireless terminal for photovoltaic generation monitoring can improve the information transmission efficiency, ensure the transmission distance, avoid damaging of a communication cable and reduce the communication interference and cost.
Owner:夏德华

Method for extending power line carrier transmission distance

The invention relates to a method for extending power line carrier transmission distance, a transmission line of power line carriers is changed into between an N phase and a ground wire from traditionally between a single phase and the N phase. A sending signal is connected to between the N phase and the ground through a coupling capacitor. The method changes the transmission line into between the N phase and the ground wire, basically removes interference of harmonic noise, and enables transmission distance of signals to be longer.
Owner:STATE GRID TIANJIN ELECTRIC POWER +1

A wear-resistant and corrosion-resistant sliding cable for mine optoelectronic composite

The invention discloses a mine photoelectric composite wear-resisting and corrosion-resisting sliding cable comprising a functional component, an inner sheath and an outer sheath which are arranged from inside to outside in turn. A sliding layer is arranged between the inner sheath and the outer sheath. The functional component comprises an optical fiber group and three power lines, one control line group and multiple reinforcing strips which are twisted around the optical fiber group. The functional component is twisted and then bundled with high-strength fibers. The outer periphery of the functional component is provided with a non-metal reinforcing layer. The outer periphery of the non-metal reinforcing layer is provided with the inner sheath. The inner side of the outer sheath is provided with an isolation film. The cable is more flexible and stable in structure. The bending radius can be less than 3 times of the cable diameter, and the bending times are more than 30000 times which are higher than the 9000 times specified in the standard MT818. The cable is subjected to long-term, frequent and repeated bending and straightening and the conductors and the optical fibers are not broken so that the problems existing in the prior art can be effectively solved.
Owner:湖南华菱线缆股份有限公司

Node temperature detection device applied to underground coal mine high-explosive switch cabinet

The invention relates to a node temperature detection device applied to an underground coal mine high-explosive switch cabinet, which is mainly composed of three modules such as wireless temperature sensors, a signal repeater and a temperature measuring host, wherein each module reaches intrinsic safety authentication qualification, temperature variations of each node are monitored accurately in a high-explosive environment, and communication with an upper computer is performed timely. The wireless temperature sensors are responsible for real-time acquisition for the temperature of nodes inside a high-explosive switch and sending the temperature to the signal repeater in a wireless mode; the signal repeater is mainly responsible for receiving probe data, performing off-chip storage, receiving a command sent by the temperature measuring host at the same time, and giving a response and a reply; and the temperature measuring host is mainly responsible for querying data of the controlled signal repeater and the wireless temperature sensors within the specified time, performing display, early-warning and the like, and performing data communication with a surface workstation through the Ethernet at the same time.
Owner:济南银澳科技有限公司

Mineral hydraulic bracket controller, bracket control system and communication method

The invention provides a mineral hydraulic bracket controller. The controller comprises a processor module, a first signal conditioning module, a second signal conditioning module, a first communication interface and a second communication interface, wherein the processor module generates a data frame signal or processes the data frame signal; the first signal conditioning module is connected with the first communication interface and the processor module, receives the data frame signal of a first adjacent mineral hydraulic bracket controller, reshapes and filters the data frame signal, and transmits the signal to the processor module for processing; the second signal conditioning module is connected with the second communication interface and the processor module; and the data frame signal transmitted by the processor module is received, filtered amplified and transmitted to a second adjacent mineral hydraulic bracket controller. The invention also provides a bracket controller system consisting of a plurality of mineral hydraulic bracket controllers and a corresponding communication method, so that remote transmission can be realized without a relay and a network terminator, andparts and cost can be saved.
Owner:HITACHI BUILDING TECH GUANGZHOU CO LTD

Long-distance light dispersion compensation device

The invention relates to a compensation device, in particular to a long-distance light dispersion compensation device. According to the technical scheme provided by the invention, the long-distance light dispersion compensation device comprises a light dispersion compensation circuit, and the light dispersion compensation circuit comprises a first-stage compensation circuit, a second-stage compensation circuit and a third-stage compensation circuit which can perform light dispersion compensation, the first-stage compensation circuit, the second-stage compensation circuit and the third-stage compensation circuit are sequentially connected, the first-stage compensation circuit is further connected with the input matching impedance conversion circuit, and the third-stage compensation circuit is connected with the output matching impedance conversion circuit. Dispersion noise generated by long-distance optical fiber signals can be compensated, the required transmission distance is effectively ensured, indexes after transmission are met, use and operation are convenient, cost is reduced, and safety and reliability are achieved.
Owner:无锡雷华网络技术有限公司

Optical module based on SFP + middle and long distance transmission

The invention relates to an optical module based on SFP + middle and long distance transmission. The optical module comprises a shell, wherein an optical transmitting component, an optical receiving component, a circuit chip and an MCU controller are arranged in the shell; the circuit chip is integrated with a drive circuit and a limiting amplifier circuit; the optical receiving component comprises a photodiode and a transimpedance amplifier; and a self-test device is also arranged in the shell, and the self-test device comprises a self-test data generating device and a data receiving device. According to the optical module disclosed by the invention, the self-test device is arranged in the optical module, the self-test data is generated through the self-test device, the optical transmitting component and the optical receiving component are subjected to primary data transmission to obtain the transmitted self-test data, and then the self-test data and the transmitted self-test data are compared through the MCU controller to analyze the loss rate of the data, and thus users can effectively determine the state of the optical module.
Owner:WUHAN FIBERPON TECH

Multi rotor unmanned aerial vehicle with high brightness air illumination

The invention discloses a multi rotor unmanned aerial vehicle with high brightness air illumination, comprising a mobile terminal and a terminal, wherein the mobile terminal installed on the unmanned aerial vehicle, and the terminal mounted in the ground receiving station; the mobile terminal comprises a central processing unit of mobile terminal, a data transmission module for mobile terminal, a remote control receiver module for mobile terminal, a LED lamp power supply control module and a mobile terminal LED lamp; the central processing unit of mobile terminal is respectively connected with the mobile terminal data transmission module, the remote control receiver module and the LED lamp power supply control module; the terminal comprises a terminal data transmission module and a terminal aircraft remote controller which are respectively connected and communicated in two directions with the terminal central processing unit; the remote control receiver module receives the signal from the terminal aircraft remote controller, and the switch control is achieved by the mobile LED power control module. The invention solves the shortcomings of the existing multi rotor UAV in the field of command and control application through the airborne high brightness air illumination.
Owner:合肥佳讯科技有限公司
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