55results about How to "Avoid intermittent" patented technology

The invention provides an unmanned aerial vehicle topology generation method for communication relay. A first unmanned aerial vehicle flies between a source point S and a destination point to find a relay point position after starting from the source point S, if the first unmanned aerial vehicle can establish the communication relay for the source point S and the destination point D, the generation of the relay topology is finished; if the first unmanned aerial vehicle cannot establish the communication relay for the source point S and the destination point D, the first unmanned aerial vehicle firstly establishes the direct communication with the source point S, and then a second unmanned aerial vehicle starts from the source point S and flies between the first unmanned aerial vehicle and the destination point D to find the relay point position until a plurality of unmanned aerial vehicles are used as the relay nodes to establish a communication link. The method disclosed by the invention is free from the artificial intervention, the problem that the communication link is intermittent and repeated in oscillatory movement is avoided.

The invention discloses a control method for output waveform improvement and low-loss short-circuit operation of an inverter and belongs to the technical field of the control method for a digital control inverter. The method comprises the steps as follows: when the inverter normally runs, four switch tubes work at the same time at the zero-crossing moment of inductive current through improving the control method of unipolar sinusoidal pulse width modulation and setting boundary conditions according to the inductive current ripple magnitude, and the inductive current is continuous; when the inverter is in ground short-circuit operation at an output side, the switch tubes are normally open to construct an inductive current free-wheeling circuit within a half cycle, so that the descending speed of the inductive current is reduced and the switching frequency of a power device during short-circuit operation is greatly reduced while inductive current limiting is achieved. According to the control method, zero-crossing distortion of an output voltage waveform during normal operation of the inverter is eliminated, and the system loss during ground short-circuit operation of the inverter is reduced.

The invention relates to a solar power driving air condition system integrating an adsorption heat pool and film solution dehumidification. The system includes a film solution dehumification sub system and a solar power absorbing cooling sub system. The film solution dehumification sub system includes a dehumidifying solution circulation loop and an outdoor air dehumidification heat exchange channel. The solar power absorbing cooling sub system includes a solar power heat collector, a water tank working medium water circulation loop and a refrigerant circulation circuit. Cold medium water generated by the solar power absorbing cooling sub system realizes heat treatment of air. The film solution dehumification sub system realizes dehumification treatment of air. Heat energy required by solution regeneration in the film solution dehumidification sub system and cold energy required by cooling are both provided by the solar energy adsorption heat pool. The drive heat source of the system can be solar energy or other low-grade heat source. Requirements for energy conservation and environment protection can be met at the same time of realizing independent adjustment of air humidity and temperature and continuous operation of the system. The air condition system has a good development prospect.

The invention relates to the technical field of masks, in particular to a gel mask and a preparation method thereof. The gel mask comprises the following components: gel, a humectant, an emulsifier, apreservative, a skin conditioner, a stabilizer, essence, a coloring agent and water, and is prepared by the steps of mixing, heating, homogenizing, mixing, cooling and the like. The gel film preparedby the method cannot be dissolved in water after being formed, has higher toughness and continuity, has excellent toughness and air permeability, and effectively reduces the risk of skin injury caused when the mask is peeled off. The mask can be completely and perfectly peeled off. The mask of the invention completely fits with the face shape of each consumer and is attached to the skin, and theproblem that a face-mounted mask is not attached to the skin enough and the mask cloth is too large is solved.

The embodiment of the invention discloses a switching method based on voice quality. The switching method comprises the following steps: acquiring voice quality information in a call process; and triggering inter-system switching under the condition that the voice quality information meets a triggering condition, wherein the triggering condition is a preset threshold value for representing the call quality. The embodiment of the invention further provides a switching device based on the voice quality, a terminal and a storage medium.

The invention provides an information transmission method, comprising: the step 102 of inputting character information into a character database, converting the character information into voice information; the step 104 of inputting the voice information into a download server; the step 106 of authenticating a mobile terminal by an authenticating server, if the result in legal, permitting the mobile terminal to access the download server and download the voice information, and if the result is illegal, inhibiting the mobile terminal from accessing the download server or downloading the voice information. Therefore, personalized information services are provided for mobile terminal users. The invention also provides an information transmission system.

The invention provides a voice processing circuit, a mobile terminal and a voice processing method. The voice processing circuit comprises a microphone module, a resistor and an audio processing chip. The difference between the resistance of the resistor and the DC impedance of the microphone module is in a preset range. One end of the microphone module is connected with the first audio input end of the audio processing chip. One end of the resistor is connected with the second audio input end of the audio processing chip. The other end of the microphone module and the other end of the resistor are connected with common ground, wherein the audio processing chip is used for performing de-noise processing on a first signal that is input by the first audio input end according to a second signal that is input by the second audio input end. The voice processing circuit, the mobile terminal and the voice processing method realize a fact that de-noise processing on voice signals is not restricted by layout of a printed circuit board. Furthermore the voice processing circuit, the mobile terminal and the voice processing method settle problems of incapability of capturing nonsteady noise such as current sound in real time, voice component attenuation in filtering bottom noise, voice distortion and voice interruption in prior art.

The invention discloses an RTP data packet out-of-order processing and frame recombination method and system. The method comprises the following steps: receiving an RTP data packet; inserting the RTP data packets into appropriate nodes in the RTP data packet double linked list queue according to the serial numbers of the RTP data packets, so that the RTP data packets are arranged in the RTP data packet double linked list queue from the queue head to the queue tail according to the ascending sequence of the serial numbers; and repeating a re-framing operation once at an interval of an anti-network jitter threshold time: taking out the RTP data packets of which the received time is greater than an affirmed loss threshold in the RTP data packet double linked list queue one by one from the head of the queue, putting the RTP data packets into an RTP frame linked list queue, re-forming a complete video frame, and putting the frame into a decoding buffer area, or the RTP data packets which cannot form a complete frame are processed. According to the method and the system, the problems of out-of-order and re-framing of the UDP/RTP data packets are solved, interruption and lagging during playing are avoided, and the probability of mistakenly discarding the UDP/RTP data packets is reduced.

The invention relates to power equipment with a snow removing function. The power equipment comprises a box body, a support rod, fan blades, a transmission shaft, an electric generator and a gearbox;the support rod is vertically arranged; the box body is fixed at the top end of the support rod; the box body is cuboid; the transmission shaft, the electric generator and the gearbox are all arrangedin the box body; the transmission shaft is horizontally arranged; the electric generator is installed at one end of the transmission shaft through the gearbox; the fan blades are arranged outside thebox body and located on the side, away from the electric generator, of the transmission shaft; a snow removing mechanism is arranged in the box body and located between the transmission shaft and thefan blades; a dust removing mechanism is arranged on the box body; and the snow removing mechanism comprises a rotating shaft, a driving disc, a driven disc and two moving assemblies. The power equipment with the snow removing function achieves the snow removing function through the snow removing mechanism, and in addition, the dust removing function is achieved through the dust removing mechanism.

The invention relates to a coding code rate adjusting device and method and electronic equipment, belongs to the technical field of communication, and aims to enable the coding code rate of a transmitting end to adapt to the change of a wireless transmission state more quickly, further improve the quality, stability and reliability of wireless video transmission, avoid the situation that a pictureis interrupted or unsmooth, and improve the user experience. The code rate adjusting device comprises an obtaining module used for obtaining the transmission state of each layer during wireless videotransmission; and the coding code rate adjustment module is used for dynamically adjusting the coding code rate based on the transmission state of each layer acquired by the acquisition module.

The invention discloses a solar water tank timing automatic water supply controller, which is characterized by comprising a 220V alternating current power supply, a 12V direct current power supply, a timing trigger circuit, a relay driving circuit, a water tank water supply indicating and electromagnetic water valve circuit and a water tank water fullness detecting circuit. Solar users cannot get rid of the water supply trouble, because the quality of an automatic water supply controller is poor, a water level sensor can easily generate water scales, the water level sensor can have a failure after the short-time use, the whole set of automatic control equipment is in failure, and the automation realization of a solar water heater is hindered. The core problem for improving the grade of the solar water heater and completing the functions of the solar water heater is to solve the problem that the sensor can easily generate water scales. A contact type water tank water fullness detecting circuit with good universality perfectly solves the difficult problem of water scale formation, and the goals that the water supply controller can be easily popularized and generalized, the service life is long, and the solar water heater realizes the automatic control without the fear of trouble in the rear are realized.

The invention belongs to the technical field of communication, and discloses a VoLTE accurate switching method and system based on user perception, and the method comprises the steps: determining a KPI index and a convergence threshold of a perception dimension through the hierarchical mapping of a KQI and a KPI index according to the perception dimension of a user, building a KPI difference portrait model, and carrying out the comprehensive scoring of a small service and a target cell; if the total weight score of the serving cell exceeds the total weight score of the neighbor cell, startingan emergency switching process; and when the serving cell does not reach the condition of starting the emergency switching threshold, namely the total weight score is smaller than the total weight score of the adjacent cell, performing pilot frequency inter-system switching based on A2 + A4/A2 + A5/A2 + B2 according to a normal switching process. According to the invention, the emergency switchingof the perception dimension is introduced to enable the UE terminal to quickly start the emergency switching when the perception of the serving cell is reduced, thereby effectively avoiding the problems of packet loss, interruption, single pass, call drop and poor MOS quality caused by the degradation of the UE terminal in the aspects of interference, quality, load, distance and the like in the prior art, and improving the voice quality.

The invention discloses a microphone controlled by a single chip microcomputer to automatically move with a sound source. The microphone comprises a microphone, a sound source receiving system connected with the microphone, a single chip microcomputer control system connected with the sound source receiving system, a motor system connected with the single chip microcomputer control system, a rotating system connected with the motor system and the microphone, a bracket device and a power supply, wherein the bracket device comprises a support frame for supporting the microphone, the sound sourcereceiving system, the single chip microcomputer control system, the motor system and the rotating system, an expansion link connected with the bottom of the support frame, and a suction cup connectedwith the expansion link; and the following technical problem in the prior art is solved: when a user talks by using the microphone, the microphone is unable to align with the mouth of the user due tothe movement of the body, such that the sound in a sound box is interrupted.

The invention belongs to the field of research of numerical control machine tool measuring technologies, and particularly relates to an oil drum refurbishment pretreatment assembly line. The oil drumrefurbishment pretreatment assembly line comprises a baking device (1), a shot blasting assembly line connected with the baking device (1) and oil drum drive fixtures (8) arranged above the shot blasting assembly line; the shot blasting assembly line includes a first 180-degree rotating mechanism (2), a drum bottom shot blasting device (3), a second 180-degree rotating mechanism (4), four drum body shot blasting devices (5) and a drum body shaping device (6), wherein the first 180-degree rotating mechanism (2), the drum bottom shot blasting device (3), the second 180-degree rotating mechanism(4), the four drum body shot blasting devices (5) and the drum body shaping device (6) are arranged and installed in sequence; and the drum bottom shot blasting device (3) and the four drum body shotblasting devices (5) are connected with sand blasting devices (7). According to the oil drum refurbishment pretreatment assembly line, by arranging the shot blasting devices of all stations, it is ensured that drum bottoms and drum bodies of the oil drum after baking can be subjected to full shot blasting; and oil drums of each process are quickly put into the next process through the oil drum drive fixtures, so that the oil drums can be machined quickly while maintaining the thermal temperature.

The invention discloses a spraying indicating arrow device for road construction. The spraying indicating arrow device comprises a base, a baffle and a groove. A material barrel is installed at the upper end of the base, a feeding port is fixed to the top end of the material barrel, a support is connected with the upper end of the right side of the feeding port, a buckle is inlaid into the tail end of the support, rolling wheels are distributed at the bottom end of the base, and a blanking port is installed in the middle of the bottom end of the material barrel; a material blocking plate is fixed to the bottom end of the blanking port, a pull rod is connected with the right side of the material blocking plate, second rolling wheels are distributed on the two sides of the bottom end of thematerial blocking plate, and a discharging port is installed in the bottom end of the material blocking plate; and a fixed column is inlaid into the middle of the bottom end of the base, a nut is connected with the bottom end of the inner side of the fixed column, and a brush is fixed to the tail end of the nut. According to the spraying indicating arrow device for road construction, the materialbarrel is arranged, the inner side of the material barrel is of an inwards-inclined-shaped structure, residual liquid can be prevented from being remained at the corners of the material barrel, and therefore the material barrel can be easily washed to be clean in the washing process of the material barrel.

The invention relates to an audio denoising method and device, a server and a storage medium. The method comprises the following steps: acquiring a to-be-processed audio signal with noise, wherein theaudio signal comprises transient noise; obtaining estimated amplitude data of a current frame signal in the audio signal with noise, wherein the estimated amplitude data is used for representing an amplitude obtained by estimating the current frame signal after the transient noise is removed; when the estimated amplitude data is smaller than minimum amplitude data, adjusting the estimated amplitude data to obtain target amplitude data of which the amplitude exceeds the minimum amplitude data; and acquiring a target audio signal based on the target amplitude data. According to the embodiment of the invention, the estimated amplitude data is adjusted by using the minimum amplitude data, so that the target amplitude data of which the amplitudes exceed the minimum amplitude data can be obtained, the condition that the bottom noise of the target audio signal is smooth is ensured, the problem of intermittent sound is avoided, and the listening experience is improved.

The invention discloses an intelligent micro-grid special inverter and a control method thereof. An intelligent micro grid controller controls a rectifier charger for charging an inversion-maintaining storage battery. When voltage of a solar power panel is higher than working voltage of an inverter, the inverter works to supply power into an intelligent micro grid. When voltage of the solar power panel is lower than working voltage of the inverter, the intelligent micro grid controller controls the inversion-maintaining storage battery for discharging toward an input end of a three-phase bridge inverter circuit, so as to keep the inverter working with micro current. When a main grid loses power, the micro intelligent micro grid controller adjusts the discharging capacity of the inversion-maintaining storage battery according to the detected photovoltaic generating capacity and the consumption electricity of an important load, or adjusts the load consumption electricity according to the detected photovoltaic generating capacity and the electric quantity of the inversion-maintaining storage battery. The invention improves the common grid-connected inverter in aspects of structure and control strategy, keeps the inverter in working status, prevents interruption of inverter supplying power to the grid, improves the photovoltaic utilization and ensures continuous power supply to the intelligent micro grid.

The invention discloses an oil and gas transportation pipeline electric heating thermal management system based on renewable energy sources and CO2 energy storage. The system comprises a renewable energy source power supply device, a CO2 energy storage device, a control device, an early warning device, a remote operation device and an oil and gas transportation pipeline electric heating device. According to the system, data values fed back by data acquisition equipment arranged in a pipeline are transmitted to an early warning device through a control device, the early warning device can feed back the data values to the control device and a remote operation device in two modes after analyzing and processing the data values, and heating amounts of different degrees are generated for oil and gas transportation pipelines at different positions in different modes. Graded and distributed management control can be carried out on the oil and gas transportation pipeline at the positions which are not blocked, easy to block and blocked in a targeted mode. The renewable energy source power supply device is coupled with the CO2 energy storage device, the electric power cost for maintaining the temperature of the pipeline is greatly reduced, the problem that the use amount of an inhibitor in the oil and gas transportation pipeline is large is indirectly solved or relieved, and bright prospects are achieved.