32results about How to "Expand effective coverage" patented technology

The invention discloses a relay communication system utilizing regenerable energy power supply and an energy-saving mode. The relay communication system is characterized in that traditional power grid energy supplies power for a base station, regenerable energy collected by an energy collecting device supplies power for a relay, and the relay processes received signals and forward the received signals; in a downlink link, the relay periodically sends channel state information and current energy storage to the base station, and the base station determines to select a direct connection transmission mode or a relay transmission mode according to load information, information fed back by the relay and the channel conditions and conducts corresponding downlink resource distribution; in an uplink link, the relay periodically sends the state information of channels from a user to the relay and the current energy storage to the base station, the base station combines the information, the load information and state information, of channels from the relay to the base station and from a user to the base station, obtained by self-estimation to choose a direct connection transmission mode or a relay transmission mode, and conducts corresponding uplink link source distribution. By the adoption of the method, communication quality can be ensured, and non-renewable energy consumption can be saved.

The invention relates to a sound box, in particular to a wireless smart sound box based on WIFI connection. The wireless smart sound box based on WIFI connection comprises a box body, a tweeter and a woofer, wherein the tweeter and the woofer are arranged on the box body. A master control processing module is arranged in the box body. The master control processing module is electrically connected with a WIFI module, a WAN port, a storage for storing routing configuration data, a play control module for controlling audio play and an audio decoder. The audio decoder is further electrically connected with a power amplifier, an audio output end is connected to the power amplifier, and the power amplifier is electrically connected with the tweeter and the woofer. The WIFI module is further connected with an antenna. By the adoption of the wireless smart sound box, a smart device can be directly connected to the wireless smart sound box through WIFI connection for music play, high-quality audio files stored in smart phones and tablet computers can be played, high-quality online audio such as audio of a lossless format can be played, the smart phones, the tablet computers and other devices are made to break through limitation of storage space, and the application range is further widened.

The invention discloses an ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna, and mainly solves the problems of wide frequency band, omnidirectional horizontal polarization and miniaturization of an antenna cannot be satisfied in the prior art. The ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna comprises a radiation unit (1), a feeding network (2) and a dielectric plate (3), wherein the radiation unit (1) is a 16-element connecting type Vivaldi antenna array which is formed by a Vivaldi unit around a center in a rotating manner; the feeding network (2) adopts a one-into-sixteen broadband Wilkinson power divider and a coupling microstrip feeder line; electromagnetic energy is coupled to the radiation unit through the coupling microstrip feeder line; the dielectric plate (3) adopts a Kangtaini (a Chinese brand name)dielectric plate with a dielectric constant of 2.55; the radiation unit and the feeding network are printed on the upper and lower surfaces of the dielectric plate; and the centers of the radiation unit and the feeding network coincide with that of the dielectric plate. The circular array antenna has the characteristics of ultra wide band, omnidirectional horizontal polarization and miniaturization, and can be used in a full-coverage ultra-wide-band wireless communication system in the peripheral regions.

The invention relates to an information classification method and apparatus, a computer device and a storage medium. The method comprises the steps of obtaining to-be-classified information, and performing word segmentation on the to-be-classified information to obtain a corresponding original word set; obtaining synonyms corresponding to original words in the original word set, and forming extended word sets by the original words and the corresponding synonyms, wherein each original word has the corresponding extended word set; according to the extended word sets corresponding to the originalwords, forming extended classification information sets corresponding to the to-be-classified information; and inputting the extended classification information sets to a trained multi-classificationmodel to obtain a target category corresponding to the to-be-classified information. By adopting the method, the information classification accuracy can be improved.

The invention relates to a system information processing method and device, computer equipment and a storage medium. The method comprises the following steps that: monitoring system information published by a terminal, and carrying out word segmentation on the system information to obtain a corresponding original word set, wherein the original word set comprises a plurality of original words; carrying out synonymy expansion on each original word to generate an expanded word set corresponding to each original word; according to each expanded word set, forming an expansion system information setcorresponding to the system information; inputting the expansion system information set into a preset system management model to obtain a target category corresponding to the system information; obtaining category annotations independently corresponding to a plurality of target information trees, screening the target information tree which contains the category annotation corresponding to the target category, and adding the system information to the target information tree obtained by screening. By use of the method, system information classification efficiency and accuracy can be improved.

The invention provides a switching device used for controlling an engine of a vehicle. The switching device comprises a button, a decorative ring, a slider structure, a ferrite internal pellet and a coil. The coil used for sending and receiving signals is wound around the ferrite internal pellet, so that the magnetic field intensity of the coil is increased, and the effectively covering area of the coil is enlarged; the vehicle can realize multiple functions by utilizing the same coil, so that the number of antennae is reduced, and the complexity degree and the cost of the system are reduced.

The invention provides a method and system for a mobile terminal to receive a call of a fixed-line telephone and a binding method and system thereof. A smart phone which is very widespread currently is adopted to replace a special extension set of a conventional cordless telephone, so as to fulfill the aim of cordless conversation, further facilitate carrying about and meanwhile, also save cost ofthe special extension set. The methods provided by the invention adopts a universal local area network connection mode to replace a special communication mode of the conventional cordless telephone,and have higher anti-interference performance and a greater audio transmission bandwidth than the conventional cordless telephone; and meanwhile, a local area network has a relay function, and thus, an effective coverage range of the extension set is greatly expanded.

The invention discloses a gas shield device for argon arc welding of a titanium material. The gas shield device comprises a nozzle, a ceramic nozzle and a contact tube, wherein the nozzle is sleeved with the ceramic nozzle through a thread, one end of the contact tube is fixed in the nozzle, the nozzle is internally provided with eight distribution holes with the contact tube as a center, the distribution holes are arranged into a ring, the end of the nozzle is provided with a protection cover structure internally provided with a cavity, the end of the nozzle is further provided with two 200-mesh stainless steel screens, and the other end of the contact tube extends out of the nozzle. The gas shield device effectively achieves air isolation, gas dispersion is more uniform, airflow is more stable, a better protection effect is achieved, and the welding effect is good.

The invention provides a fire alarm remote monitoring system and a fire alarm remote monitoring method, and relates to the technical field of fire alarm. The system comprises fire detection alerters and a remote fire-fighting monitoring platform. There are multiple fire detection alerters which are connected in a communication way by an LORA-based wireless network. Multiple fire detection alertersare connected with the remote fire-fighting monitoring platform in a communication way by the wireless network so as to feedback the fire alarm information to the remote fire-fighting monitoring platform. The method comprises the steps that the fire alarm information collected by the fire detection alerters is summarized by the LORA-based wireless network and then fed back to the remote fire-fighting monitoring platform by the LORA wireless gateway. Or the fire alarm information collected by the fire detection alerters is summarized by the LORA-based wireless network and fed back to the remote fire-fighting monitoring platform by the NB-IOT network. The system can perform real-time monitoring and can quickly respond to the fire so as to be suitable for the old communities. The two methodsare suitable for fire monitoring of the old communities so as to be quick and convenient and low in cost.

The invention provides an ultrasonic detection wedge block, comprising a working surface and a connecting surface on front and back sides, wherein the shape of the working surface of the ultrasonic detection wedge block comprises one or more jagged steps, a rising surface of each step is a focusing surface or plane, and a falling surface is a plane; the rising surface of the step is obliquely arranged, so that the direction of a sound beam emitted by an ultrasonic probe can be changed, and oblique incidence of ultrasonic waves can be achieved on a workpiece; and the plurality of jagged steps can divide a single sound beam emitted by the ultrasonic probe into several sound beams. The invention further provides a method for improving the effective coverage of a sound field of the ultrasonicprobe, wherein the ultrasonic detection wedge block is attached above the ultrasonic probe; and the sound beam of the ultrasonic wave emitted by the ultrasonic probe is divided by the ultrasonic detection wedge block to form a plurality of sound beams, and meanwhile the workpiece is detected. By adopting the method provided by the invention, the effective coverage of the sound field of the ultrasonic probe can be increased, and the consistency of detection signals is improved.

The invention provides a method and a system for measuring the three-dimensional distribution of a high-voltage electric field. In the system, an attitude sensor detects the angle vector deviation value of the current position of a mounting body relative to the original calibration position in real time, an electric field sensor measures the electric field intensity value at the current position under the current angle vector deviation value, the matching and calculation of the electric field intensity distribution information at the original calibration position relative to a detection systemare completed, and finally, the three-dimensional distribution information of a high-voltage electric field is measured. According to the detection system and method, on the premise that the number of the electric field sensor is not increased, the effective coverage range of electric field detection is enlarged, the portability and usability of the detection system and method are guaranteed, andmore comprehensive protection is provided for detection personnel. Because of the arrangement of a holder capable of freely rotating in the detection system provided by the invention, the electric field measurement device does not have a detection blind area, and the problem of false alarm or missing alarm caused by the detection blind area is avoided.

The invention discloses a base plate device of an industrial water jet machine. The structure of the base plate device comprises a rectangular mounting base plate; a radiating grating array composed of radiating gratings is arranged on the mounting base plate; a fixing threaded hole is formed in one sidewall of the mounting base plate; a coupling bolt is arranged on the fixing threaded hole; a movable water nozzle is arranged on the head of the coupling bolt; a rotatable fixed shaft is arranged at the tail of the mounting tail. Due to rotatable fixation, a user can adjust a set angle of the whole base plate device; the movable water nozzle is adopted to realize large-area water flow jetting so that an effective coverage range of the existing industrial water jet machine can be greatly improved; additionally, the base plate device is easy to demount, convenient to repair and high in practicability.