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91results about How to "Wide signal coverage" patented technology
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Method, device and system for implementing push-to-talk service
InactiveUS20080076391A1Wide signal coverageSmall call delayUnauthorised/fraudulent call preventionEavesdropping prevention circuitsApplication serverPush-to-talk
The present invention discloses a method for implementing a Push-To-Talk (PTT) service, including: establishing a connection between a terminal and a conference room in a conference system with half-duplex communication mode; receiving a request sent by the terminal and providing the PTT corresponding to the request according to a stored corresponding relation between the PTT services and the requests. According to the method, PTT service talk among conference room members or groups in the conference room is implemented. Embodiments of the present invention also disclose another method for implementing the PTT service, as well as a terminal, a conference application server and a system for implementing the PTT service. According to the embodiments of the present invention, the PTT service with wide signal coverage and small call delay is implemented.
Owner:HUAWEI TECH CO LTD
Pole plate electrode system for logging instrument
ActiveCN103726831AIncrease the areaGuaranteed insulation performanceConstructionsBorehole/well accessoriesEngineeringInstrumentation
The invention relates to a pole plate electrode system for a logging instrument. The pole plate electrode system for the logging instrument comprises an insulating plate (2), a pair of emission electrode plates (3) and electric buttons (7), wherein a pair of grooves is formed in the two ends of the insulating plate (2), the emission electrode plates (3) are transversely embedded into the grooves of the insulating plate (2), the electric buttons (7) are embedded into the middle of the insulating plate (2), and the emission electrode plates (3) are symmetrically arranged relative to the electric buttons (7).
Owner:CNPC GREATWALL DRILLING ENG
Wireless intelligent terminal based remote wireless monitoring method for oxygen stations
ActiveCN104077909ALow costShort implementation periodTransmission systemsContainer filling methodsApplication serverMonitoring system
The invention discloses a wireless intelligent terminal based remote wireless monitoring method for oxygen stations. The remote wireless monitoring method is realized by adopting an intelligent terminal based remote wireless monitoring system for the oxygen stations; the system comprises a client, an application server and a middleware server, as well as a plurality of intelligent terminals, adjusting recording meters and positioning controllers which are distributed on the oxygen stations, wherein the client is connected with the application server through the Internet; the application server is connected with the middleware server through the Internet; the middleware server is wireless connection with the intelligent terminals of the oxygen stations respectively; the intelligent terminals of the oxygen stations are connected with the adjusting recording meters and the positioning controllers through connecting wires respectively. The remote wireless monitoring method aims at cost reduction, efficiency increase, environmental protection and energy conservation, and is more complete in functions, more humanized and more diversified.
Owner:CHONGQING IRON & STEEL GRP ELECTRONIC CO LTD
Indoor distribution system
ActiveCN110417452AIncrease data transfer rateImprove stabilityRadio transmissionNetwork planningAudio power amplifierRadio frequency signal
The invention relates to an indoor distribution system, and the system comprises a DP subsystem which is used for receiving an uplink radio frequency signal transmitted by a terminal, converting the uplink radio frequency signal into a first uplink baseband digital signal, and transmitting the first uplink baseband digital signal to a Hub subsystem; an uplink radio frequency link of the DP subsystem comprises an antenna, an uplink amplifier and an uplink FPGA which are connected in sequence. The Hub subsystem is connected with the DP subsystem and used for converting the first uplink basebanddigital signal into a second uplink baseband digital signal and sending the second uplink baseband digital signal to the AU subsystem; the AU subsystem is connected with the Hub subsystem and used foranalyzing the second uplink baseband digital signal to obtain an uplink baseband signal and sending the uplink baseband signal to the GW subsystem; and the GW subsystem is connected with the AU subsystem, is connected with at least one core network of each operator in the plurality of operators, and is used for determining a target core network corresponding to the uplink baseband signal and sending the uplink baseband signal to the target core network. By adopting the indoor distribution system, co-construction and sharing of multiple operators can be realized, and the deployment difficultyand cost are reduced.
Owner:COMBA TELECOM SYST CHINA LTD +1
Remote indoor air quality management method and device
InactiveCN104075401ATotal Air Quality ControlRealize managementSpace heating and ventilation safety systemsLighting and heating apparatusIndoor airIndoor air quality
The invention provides a remote indoor air quality management method and device. The method comprises the following steps: establishing connection between a communication terminal and a management server through a GPRS (General Packet Radio Service) network, and transmitting a control command for managing the air quality to the management server; establishing connection between the management server and an air purifier through the GPRS network, and forwarding the control command to the air purifier; splitting the received control command into a first control command and a second control command by using the air purifier, establishing connection with at least one air state adjusting equipment by transmitting the pulse of an infrared waveform corresponding to a remote controller of the air state adjusting equipment, and transmitting the second control command to the air state adjusting equipment through infrared rays; executing the first control command to purify harmful substances in indoor air by using the air purifier, and meanwhile executing the second control command to adjust the physical state of the indoor air by using the air state adjusting equipment.
Owner:中科润蓝环保技术(北京)股份有限公司
Ethernet radio network gateway based on Z-Wave technology
InactiveCN103200082ASolve the problem of relatively smooth interconnectionWide signal coverageNetwork connectionsHigh level techniquesNetworking protocolRadio networks
Owner:深圳市诺华尼克电子有限公司
Inspection unmanned aerial vehicle system for environment detection based on Internet
InactiveCN106843247AWide signal coverageSignal transmission is convenientAttitude controlPosition/course control in three dimensionsAttitude controlControl system
The invention discloses an inspection unmanned aerial vehicle system for environment detection based on the Internet, and relates to the technical field of unmanned aerial vehicle systems. The inspection unmanned aerial vehicle system comprises an unmanned aerial vehicle, a ground control terminal and a cloud server, the bottom of the unmanned aerial vehicle system is provided with a camera component, the inner portion of the unmanned aerial vehicle system is provided with a flight control system, an airborne communication module, a posture control module, a data processing module and an environment detection module, the data processing module comprises a data contrast module, a graph generating module and an alarm module, and the data contrast module is connected with the graph generating module and the alarm module separately, the ground control terminal is provided with an alarm unit, and the ground control terminal and the cloud server are in wireless connection through a 4G network. According to the inspection unmanned aerial vehicle system for the environment detection based on the Internet, wireless remote communication is carried out, the signal coverage is broad, the signal transmission is convenient, the equipment investment is small, functions are diverse, the flight posture can be automatically adjusted according to actual conditions, and the stability is good.
Owner:GUANGDONG RONGQE INTELLIGENT TECH CO LTD
Multi-functional identity identifying device and system
InactiveCN102867203AFeatures real-time location updatesSolve charging problemsCo-operative working arrangementsLocation information based serviceComputer moduleIdentification device
The invention discloses a multi-functional identity identifying device and a system. The multi-functional identity device comprises a positioning model which is a GPS positioning model or a Beidou positioning model and used for obtaining the present position information; a storage which is used for storing the data comprising the identity information; a radio communication model which is used for transmitting and receiving the data and realizing the data interaction with a remote monitoring center; a cell which is used for supplying power to a microprocessor; and the microprocessor which is adopted as a main control unit and used for coordinating the operation of each model. The multi-functional identity identifying device and the system have radio communication function and positioning function.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
Old people nursing pulse watch
ActiveCN103431852ASolve care problemsReliable deliveryDiagnostic recording/measuringSensorsInformation transmissionOlder people
The invention provides an old people nursing pulse watch, which is used for solving the problems of inaccurate pulse monitoring, untimely information transmission and inconvenience in communicating and carrying existing in a conventional pulse monitoring device. The old people nursing pulse watch comprises a pulse acquiring device, a main control device and a watch display panel, wherein the main control device is connected with the pulse acquiring device; the watch display panel is connected with the main control device; the main control device comprises a positioning device, a signal transmitting device and a main processor used for controlling the positioning device and the signal transmitting device; the main control device is connected with the pulse acquiring device; the signal transmitting device comprises a data signal transmitting device and a short message signal transmitting device; the data signal transmitting device is used for transmitting pulse information acquired by the pulse acquiring device to a data receiving device through an Internet of things server; the short message signal transmitting device is directly communicated with the data receiving device.
Owner:河北火木科技有限公司
Internet-of-things-based elevator group safety operation on-line monitoring and fault diagnosis system
InactiveCN108750848AImprove the level ofImprove management efficiencyElevatorsInformation processingWeb service
The invention belongs to the field of elevator safety monitoring, and discloses an internet-of-things-based elevator group safety operation on-line monitoring and fault diagnosis system. The system comprises information acquisition terminals, a mobile communication network, a communication gateway, an on-line monitoring and diagnosis platform, factory terminal modules, maintenance unit terminal modules and property terminal modules; the mobile communication network is connected with the on-line monitoring and diagnosing platform through the communication gateway; the on-line monitoring and diagnosing platform comprises an information processing and controlling module, a WEB server, a data server and an industrial personal computer, wherein the WEB server, the data server and the industrialpersonal computer are connected with the information processing and control module; the information processing and control module is composed of a system configuration module, an elevator managementmodule, a personnel management module, a fault management module and a diagnosis management module; and the WEB server is connected with a mobile terminal. According to the system, the management system is improved, the fault occurrence and diagnosis time is shortened, and the system has wide application prospects.
Owner:淮北工科检测检验有限公司
Water quality monitoring device with snorkeling function, supervision system and method for applying water quality monitoring device
PendingCN106980004AStatic monitoring has obvious advantagesWide signal coverageProgramme controlComputer controlRemote controlWater quality
The invention provides a water quality monitoring device with a snorkeling function, a supervision system and a method for applying the water quality monitoring device. The water quality monitoring device, the supervision system and the method are used for monitoring water quality indexes of water bodies at different locations and depths. The water quality monitoring device can be structurally divided into a front water bag cabin, a rear water bag cabin, a battery pack cabin, an electronic equipment cabin, a control cabin, a water quality detection cabin, a steering engine cabin and a compressed air tank. The water quality monitoring device, the supervision system and the method have the advantages that the water bodies can be optionally multi-directionally detected at the different locations and the different depths in dynamic water quality monitoring modes and can be directly positioned by the aid of eMTC communication modules; control operation can be carried out by the aid of APP (application) or built-in minor programs of WeChat in non-line-of-sight ranges, location maps can be directly displayed in the APP or the WeChat of mobile phones, and detection devices can move under the remote control; the water quality monitoring device, the supervision system and the method start off from frontline requirements, are novel in conception and have broad market prospects, and technologies are convenient to implement.
Owner:FUJIAN QIANGMIN INFORMATION TECH CO LTD
A method for transmitting data via mobile phone dialing communication or GRPS packet communication technology
InactiveCN101127954AAchieve separationReal-time deliveryPayment architectureRadio/inductive link selection arrangementsPacket communicationMobile Telephone Number
The utility model relates to a method for data transfer which is realized via communicating with the mobile phone dialing. A mobile phone and a data transfer target are used to realize the communication connection. The method of the utility model comprises a second extended memory card and a special read-in processing program which comprises a key, a test key and an encryption algorithm; the information is read according to given program. The transfer method is that: a mobile phone communication is set up after dialing; an electronic test key is generated by the processing program according to the transfer data and the mobile phone number; and is encrypted and sent to the communication target together with the transfer data. Real-time payment is an application case of the method. The method is characterized in that the key, the test key and the encryption algorithm in the data transferring are integrated with the memory card without significantly reducing the capacity of the mobile phone memory card. The security system of the communication system and the security system of the transfer system are separated, and the security is independently ensured. The existing system resource is exploited to the maximum; the mobile communication is brought into full play; the communication coverage is wide. The technical proposal of the utility model has the advantages of security, real time performance, efficiency, accuracy, rapidness and simple operation.
Owner:冯卫东 +2
Anti-interference double-frequency radio frequency identification device
ActiveCN105787545AExpand coverageImprove stabilityRecord carriers used with machinesMicrocontrollerEngineering
The invention discloses an anti-interference double-frequency radio frequency identification device. The device comprises a double-frequency radio frequency electronic label and further comprises a low-frequency receiving antenna, a low-frequency circuit, a high-frequency circuit and a high-frequency antenna. A microcontroller storing an ID number of the electronic label realizes switching between dormant and starting states through low-frequency information signals, and the microcontroller is programmed in such a manner that the microcontroller reads the low-frequency information signals and generate intensity identification signals according to the intensity; the microcontroller analyzes and extracts the low-frequency information signals and generates signal source codes according to the low-frequency information signals; a timer is stopped in a time interval, and under the stop state, the microcontroller excessively starts the high-frequency circuit, stops the high-frequency circuit and starts the low-frequency circuit, and when the continuous time reaches the time interval, the stopping state of the timer is stopped. According to the invention, the signal coverage range is relatively wide, the signal stability is high, the device is easy to realize, the circuit is simple, the cost is low, popularization and application are facilitated, the emission power is adjusted in many modes, and the installation and construction are more flexible and more convenient.
Owner:SUZHOU MULAN ELE&TEC
Passive remote emergency button, application method thereof, and help-seeking system
InactiveCN106952446ANo problems such as pollutionNo maintenance costsAlarmsTransmissionPower Management UnitEngineering
The invention provides a passive remote emergency button and an application method thereof. The emergency button is used for achieving a remote help-seeking function through pressing a key in needs or emergency. The emergency button comprises a magneto-electric induction device, an eMTC communication module group, a central processing unit, a central processor unit, a power management unit, a rectification processing unit, a button device body, and an energy storage capacitor. The emergency button does not need an external power supply or a battery for power supply through combining the eMTC communication technology with the passive magneto-electric induction device. There is no need of an additional GPS or other positioning chip, and the emergency button achieves the locating of a device. The emergency button is very wide in signal coverage, and the communication distance can reach several kilometers. The emergency button supports the positioning of a moving object, and can achieve the connection with a remote platform. The emergency button is low in cost, is small and exquisite in appearance, can be installed and fixed freely, and is good in market prospect.
Owner:FUJIAN QIANGMIN INFORMATION TECH CO LTD
Radio frequency tag identification system based on multiple antennas
ActiveCN105701432AExpand coverageImprove stabilitySensing by electromagnetic radiationTransmitted powerCarrier signal
Owner:SUZHOU MULAN ELE&TEC
Wireless non-light of sight gigabit Ethernet transmission system and method based on 700-1,100 MHz variable frequency
ActiveCN106160758ASolve the difficulty of wiringReduce wiring costsData switching networksDuplex signal operationTransmission channelTerminal equipment
The invention discloses a wireless non-light of sight gigabit Ethernet transmission system based on 700-1100 MHz variable frequency. The transmission system comprises a terminal device and a front-end device. The terminal device comprises a first RF antenna, a first bi-directional RF power amplifier, a first variable frequency transceiver chip, a first baseband data processing chip, an Ethernet function conversion module, a multi-port switch and a first RJ45 interface. The front-end device comprises a second RF antenna, a second bi-directional RF power amplifier, a channel selector, a plurality of transmission channels, a 1000base switch, a master control CPU and a second RJ45 interface. The whole transmitting-receiving process of the Ethernet transmission system adopts a TDD way; the front-end device comprises the transmission channels including variable frequency transceiver chips and baseband data processing chips, so that the data transmission bandwidth can be multiplied; frequencies are only emitted by one transmission channel at the same time, so that same frequency interference is avoided; and multi-channel Ethernet data are aggregated under the coordination of the 1000base switch.
Owner:TELECAST TECH CORP
Remote driving system and method based on 4G network communication
InactiveCN109739157AVast potential marketWide signal coverageProgramme controlComputer controlMicrocontrollerSTM32
The invention discloses a remote driving system and method based on 4G network communication. The remote driving system comprises a simulator part and a vehicle terminal part, wherein the simulator part comprises a steering wheel and an accelerator brake pedal, and is connected with a control room host through a serial port to simulate real driving and acquire a control signal; the vehicle terminal part adopts a STM32 single-chip microcomputer; two GPIO pins of PA9 and PA10 are led out to serve as serial ports I which are connected to an industrial control computer of a vehicle through a USB;two GPIO pins of PA2 and PA3 are led out to serve as serial ports II which are connected to a 4G module; and when a simulator in a remote cockpit generates a control signal, the signal is transmittedto the STM32 single-chip microcomputer through a serial port, transmitted to the 4G module through a cloud end, and transmitted to the single-chip microcomputer through the serial ports II, and data is controlled in a CAN protocol format to be transmitted to the industrial control computer through the serial port I to control vehicle running. The remote driving system and method have the advantages of moderate technical requirements, wide coverage of 4G signal and relatively low development cost.
Owner:CHANGSHU INSTITUTE OF TECHNOLOGY
Locomotive braking data synchronism memory transfer method and data memory transfer machine
ActiveCN103092180AMeet Transfer NeedsSimple structureTotal factory controlProgramme total factory controlData synchronizationEngineering
The invention discloses a locomotive braking data synchronism memory transfer method and a data memory transfer machine. The data memory transfer machine receives present braking data from a locomotive braking control unit (BCU) through a universal serial bus (USB) interface. The data is encrypted after the data memory transfer machine receives the present braking data. A present real-time timestamp is added to store. An upper computer works out real-time time when the BCU stores the data according to the real-time timestamp and system time of the BCU. The real-time time is used as time basis of statistics and analysis in later period. The data memory transfer machine comprises a power supply module, a global position system (GPS) module, a standard USB interface, an advanced RISC machines (ARM) chip, a display screen module, a working state indicator light and a power management module. The locomotive braking data synchronism memory transfer method and the data memory transfer machine has the advantages of being simple and reasonable in hardware circuit, wide in application range and low in cost.
Owner:ZHUZHOU YIXING TECH CO LTD
Router with outage self-protection function
InactiveCN106209659AExtended service lifeScientific and reasonable designData switching networksUSBComputer science
A router with an outage self-protection function comprises brass antennas, a power interface, a heat dissipation device and shockproof support legs. The brass antennas are installed on the two sides of a shell through fixing clamps, a router surface cover is arranged on the shell, computer and router interfaces and an exchanger and router interface are formed in the front face of the shell, a USB interface is formed at one side of the computer and router interfaces, a reset key is arranged over the USB interface, the power interface is installed at one side of the exchanger and router interface, the heat dissipation device is installed at one side of the power interface, and the shockproof support legs are installed under the shell. The router is scientific and reasonable in design, easy and convenient to operate and stable in operation, and when the conditions that an instrument or electric appliance may be damaged or be dangerous occur in operation, a power supply is automatically cut off to stop operation to ensure the equipment safety function.
Owner:四川凯登时代教育咨询有限公司
NB-IoT-based object overturn early warning system
The invention discloses an NB-IoT-based object overturn early warning system comprising multiple detectors, a cloud server and multiple early warning terminals. Each detector is provided with a shellused for being fixed on the measured object, a PCB arranged in the shell and a monitoring circuit arranged on the PCB. The monitoring circuit is provided with an MEMS inertial sensor module which is fixed on the central position of the PCB and used for sensing the six-degree-of-freedom parameters of the space motion of the measured object in real time, an AM2302 environmental temperature and humidity monitoring sensor module which is used for sensing the surrounding environmental temperature and humidity parameters of the measured object, an NB-IoT data module which is used for transmitting the degree-of-freedom parameters and the environmental temperature and humidity parameters and a 32-bit low-power-consumption STM32F103C single-chip microcomputer which is used for preprocessing the degree-of-freedom parameters and the environmental temperature and humidity parameters. The cloud server and the detectors form wide area internet of things communication connection through a wide area internet of things NB-IoT base station for transmitting early warning signals. Multiple early warning terminals are connected with the cloud server in a communication way through the wide area internetof things and used for receiving the early warning signals.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Pole gradient detection system and method
PendingCN110345916ALow costImprove work efficiencyBatteries circuit arrangementsTransmission systemsWireless transmissionComputer module
The invention relates to the field of power, in particular to a pole gradient detection system and method. The pole gradient detection system comprises a control module, a gradient angle detection module, a communication module, a remote terminal, a solar cell panel and a storage. The system can monitor the gradient of a power transmission rod wirelessly in an unmanned way. A solar rechargeable battery is used as a power supply system, so that the pole gradient detection system is environmentally friendly, and the staff cost on equipment maintenance is lowered. Moreover, the problem detectiontime is greatly shortened, and powered technical guarantee is provided for maintenance staff. Data is transmitted in a GPRS wireless transmission way, so that a wide signal coverage area and reliableand stable data transmission are realized. the real-time state of each pole can be monitored with a remote terminal in order to fulfill the aim of improving the working efficiency of power grid maintenance staff.
Owner:GUANGDONG POWER GRID CO LTD +1
Vehicle-mounted positioner and mining locomotive comprising vehicle-mounted positioner
ActiveCN106314484ARealize communicationAchieve positioningSignalling indicators on vehicleNavigation instrumentsUltra-widebandElectrical battery
The invention discloses a vehicle-mounted positioner and a mining locomotive comprising the vehicle-mounted positioner and belongs to the field of positioning of mining locomotives. The vehicle-mounted positioner comprises a shell body, a circuit board and a battery; the circuit board and the battery are arranged in the shell body; the battery is connected with the circuit board and supplies power to the circuit board; the circuit board is provided with an ultra-wideband module; the ultra-wideband module is connected with an antenna; antistatic paint is coated on the shell body; the antenna is packaged in an antenna shell through waterproof glue. The vehicle-mounted positioner has high positioning precision, wide signal coverage range, wide transmission bandwidth and good expandability; safety and good waterproof effect of the locomotive under a coal mine are guaranteed.
Owner:BEIJING YONGANXINTONG TECH CO LTD
Distribution network automation communication system
InactiveCN104882966ALow costHigh bandwidthPower distribution line transmissionCircuit arrangementsSelf-healingModem device
The invention discloses a distribution network automation communication system, which is characterized in that an optical fiber access device (1) is connected to four optical modems (4) and a wireless public network acquisition device (3) of a first feeder terminal unit (9), the optical modems (4) adopt a double-loop network connection mode, connected nodes are connected in series in a bidirectional closed-loop manner, one of the optical modems (4) is connected to a first network switch (5), the first network switch (5) is connected to a communication management machine (7) connected with a switch cabinet (8), one of the optical modems (4) is connected to a second network switch (6), the second network switch (6) is connected to a carrier acquisition device (2) connected with a second feeder terminal unit (10), and one of the optical modems (4) is connected to a transformer terminal unit (11). The distribution network automation communication system is stable and reliable in communication, wide in coverage range and high in self-healing capacity.
Owner:国网山东龙口市供电公司 +1
Intelligent agricultural management system based on narrowband Internet of Things
InactiveCN113313469AEasy to integrateReduce complexityParticular environment based servicesOffice automationFarming environmentAgricultural engineering
The invention discloses an intelligent agricultural management system based on narrowband Internet of Things. The system comprises a monitoring subsystem, a control subsystem, a narrowband Internet of Things NB-IoT base station, a cloud platform and a mobile module. The monitoring subsystem is used for monitoring the agricultural environment, and after the related numerical value of the agricultural environment exceeds a specified range, early warning is initiated and uploaded to the cloud platform; the control subsystem is used for accurately controlling water use, pesticide application and fertilizer application; the cloud platform is used for receiving and storing the data uploaded by each module through the NB-IoT base station and sending a control instruction to the control module; the mobile module is used for monitoring an agricultural environment and controlling agricultural equipment at a mobile terminal by a user; and all the modules are integrated with NB-loT communication chips, and all the modules carry solar panels. The intelligent agricultural monitoring subsystem established based on the NB-IoT technology is wide in signal coverage range, simple in networking, low in cost and high in upper limit of the number of accessible modules.
Owner:河北大地数字信息技术有限公司
2.4GHz wireless communication device
InactiveCN101552678AImprove efficiencyAvoid blind spotsData switching detailsData switching by path configurationOmnidirectional antennaModem device
The invention discloses a 2.4GHz wireless communication device, in particular a device using 2.4 GHz wireless communication in a complex industrial environment. The 2.4GHz wireless communication device comprises a direct sequence frequency-hopping modem, wherein the modem is connected with at least two power distributors, at least one power distributor is connected with at least one set of directive antenna, and at least one power distributor is connected with at least one set of omni-directional antenna. Due to the technical scheme of the invention, the technology of 2.4GHz wireless communication can be used in a complex environment. The 2.4GHz wireless communication device only needs to be provided with one wireless modem as a base station to avoid blind areas among a plurality of signal-covered areas caused by using a plurality of base stations. The invention also has the advantages of remote signal transmitting distance, wide signal-covered range and good applying effect in a complex environment.
Owner:SHANGHAI BAOSIGHT SOFTWARE CO LTD
LoRaWAN-based Internet-of-Things communication extension method and LoRaWAN Internet of Things
ActiveCN112738880ARealize blind spot coverageLow costNetwork topologiesConnection managementPrivate networkTrunking
The invention provides a LoRaWAN-based Internet-of-Things communication extension method and a LoRaWAN Internet of Things, and the method comprises the steps: building a LoRaWAN network which comprises a LoRaWAN gateway, a collector and a server; enabling the to-be-accessed terminal node to adopt a LoRaWAN terminal mode to send a registration request to the LoRaWAN gateway, and when feedback information of the LoRaWAN gateway is not received within a first preset feedback time, switching the to-be-accessed terminal node to the LoRa terminal mode to send the registration request to the collectors arranged in the collector channels, and receive the feedback information of the collectors, establishing communication connection with the collector corresponding to the signal intensity value in the strongest feedback information so as to construct a collector private network; and achieving relay forwarding of an uplink frame and a downlink frame of a to-be-accessed terminal node by adopting a collector for establishing communication connection, storing and updating registration information of the to-be-accessed terminal node, and sending the registration information to a server. The beneficial effects of the invention are that the LoRaWAN network and the collector private network do not interfere with each other, thereby achieving the blind area coverage of the LoRaWAN.
Owner:杭州粒合信息科技有限公司
Double-frequency electronic label system
ActiveCN105787544AExpand coverageImprove stabilityRecord carriers used with machinesCarrier signalInterference problem
The invention discloses a double-frequency electronic label system. An antenna activation source of the system comprises a memory used for storing each low-frequency antenna ID code and an antenna activation source ID code; a low-frequency radio frequency circuit and a plurality of low-frequency antennas connected with the low-frequency radio frequency circuit, wherein the low-frequency radio frequency circuit comprises an and gate and a power MOS tube driving module which are connected in series, the and gate is used for modulating a data signal from a main control circuit into a 125 KHz carrier signal and forming a low-frequency activation signal; a power control circuit arranged between the low-frequency radio frequency circuit and the main control circuit, wherein the power control circuit is used for adjusting the emission power of the low-frequency antennas; and the main control circuit, wherein according to a set work mode, the main control circuit utilizes the low-frequency radio frequency circuit to generate low-frequency activation signals containing the low-frequency antenna ID codes, the antenna activation source ID code and work mode information based on the low-frequency antenna ID codes and the antenna activation source ID code received from the memory. According to the invention, the coverage range of the low-frequency signals is increased, the stability of the low-frequency signals is improved, and the interference problem among the antennas is solved.
Owner:SUZHOU MULAN ELE&TEC
Fire safety online early warning system based on Internet of Things
PendingCN111683149AEasy to installEasy to debugAlarmsTransmissionInformation processingWireless data transmission
The invention belongs to the technical field of Internet of Things application, and discloses a fire safety online early warning system based on Internet of Things, which comprises an information acquisition system, an information processing system and a terminal early warning system, wherein the information acquisition system comprises a fire-fighting facility, a signal acquisition unit and a wireless networking module; the information processing system comprises a data processing unit and a data transmission unit; the terminal early warning system comprises a cloud server, a field operationterminal and an online early warning service application. In conclusion, early warning of each fire-fighting facility can be timely and accurately realized based on the fire safety online early warning system; moreover, a wireless networking module is arranged in a front-end information acquisition system, so that a wireless data transmission communication networking mode is adopted for front-endsignal acquisition, wall penetration, road breaking and complicated line laying during construction can be avoided, and the whole early warning system is very convenient to install, debug and maintainin the later period.
Owner:杨涛涛
Antenna activation source for identifying radio frequency with dynamic and adjustable distance
ActiveCN106295445AExpand coverageImprove stabilityMemory record carrier reading problemsSensing by electromagnetic radiationComputer moduleEngineering
Owner:SUZHOU MULAN ELE&TEC
Control system of intelligent curtain
The invention discloses a control system of an intelligent curtain. The control system comprises a curtain, an illumination sensor, a wireless signal transmitting / receiving device, a controller, motors, a rolling rod and a mobile terminal, wherein the illumination sensor is connected to the wireless signal transmitting / receiving device; the mobile terminal is connected to the wireless signal transmitting / receiving device via a wireless network; the wireless signal transmitting / receiving device is connected to the controller; the controller is connected to the motors; shafts of the two motors are connected to the left and right ends of the rolling rod; and the rolling rod is connected to the upper end of the curtain. A problem of existing curtains that the interior of an office or a residence is excessively exposed to sunlight or rain and furniture gets damaged since the existing curtains are in lack of a function of reminding regulating and controlling to get closed in the case of weather changes such as rain or too strong illumination after people leave away from the office or residence can be solved.
Owner:合肥米度信息科技有限公司
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