529results about How to "No added complexity" patented technology

The invention discloses a cloud computing platform server load balancing system and method, so as to overcome the defect that the current static load balancing technology cannot carry out dynamic adjustment according to the real-time condition of a load and the defect that a dynamic load balancing technology needs to additionally occupy system resources. According to the method, when a service request is received, a cloud computing platform selects a target server according to the number of requests which are processed and are being processed by each server in a cluster in recent preset unit time and the number of generated logs, and forwards the service request to the target server for processing. According to the embodiment of the invention, the load balancing can be effectively improved.

The invention relates to a bidirectionally isolating type series resonance DC/DC converter (100) which comprises voltage-stabilizing capacitors (22, 32), high-frequency converters (20, 50), series resonance circuits (30, 40), a high-frequency transformer (28) and an energy storage unit (60), wherein the voltage-stabilizing capacitors (22, 32) are used for enhancing the stability of a DC voltage; the high-frequency converters (20, 50) have the same structure and comprise four switching elements inversely connected in parallel with a rapid diode and can be used for inversion and rectification; the series resonance circuits are used for converting three kinds of discrete levels output by corresponding high-frequency converters into sinusoidal waveforms and can be used for softly switching the switching elements of the corresponding high-frequency converters, at the same time, only one series resonance circuit (30 or 40) acts; and the high-frequency transformer (28) can be used for isolation and transformation. The transformer (100) can be used for greatly converting the DC voltage, has high efficiency, and can be applied to an electric vehicle power supply, standby power supplies of large-scale equipment, and the like.

The invention discloses a treatment method for failure of radio link during a switch process, which comprises the following steps: a source base station chooses a district under control as a back-up district; the source base station sends a switching order to a user device; the user device obtains reserved parameters of the back-up district; the reserved parameters comprise at least a temporary indicator C-RNTI of a district wireless network; the user device switches to a switch target; the user device is connected with the back-up district according to the reserved parameters of the back-up district after the switching fails. The invention saves time spending on choosing the back-up district for the user device, which not only reduces the treatment time for the failure of the radio link, but also does not increase the complexity of an existing system. Besides, A base station and the user device are provided either.

The present invention discloses an automatic optimization method for performance of a Spark platform. The method comprises: 1) creating a Spark application performance model according to an executing mechanism of a Spark platform; 2) for a set Spark application, selecting some data of the Spark application to be loaded and run on the Spark platform, and acquiring performance data when the Spark application is run; 3) inputting the acquired performance data into the Spark application performance model, so as to obtain a value of each parameter in the Spark application performance model when the Spark application is run; and 4) assigning the value that is of each parameter of the performance model and that is obtained in step 3) to the Spark application performance model, calculating performance (total execution time of the application) of the Spark platform when configuration parameters are combined in different ways, and then outputting a configuration parameter combination when the performance of the Spark platform is optimum. The method disclosed by the present invention has the advantages of a low threshold, easy extension, a low cost and high efficiency and the like.

The invention relates to a method for transferring a graphene film to a substrate, belonging to the field of semiconductor film. The method comprises the following steps: spin-coating an organic colloid on the surface of the graphene film, drying and hardening the film; adhering adhesive tape to the surface of the organic colloid; then putting a substrate material adhered the adhesive tape into a corrosive solution to corrode a metal catalyst layer under the graphene film; after the corrosion is finished, taking out the adhesive tape, the organic colloid and the graphene film which are adhered to the adhesive tape from the solution; uniformly spreading onto a target substrate, removing the adhesive tape by using a corresponding method, then dissolving the organic colloid away to finally finish the transfer of the graphene film to the target substrate. The method for transferring the graphene film to the substrate, disclosed by the invention, is simple and easy to implement, and can conveniently transfer the graphene film with a large area to any substrate material without causing a large damage. The method has the advantages of being large in transfer area, simple in processing steps, convenient in operation and can be combined with semiconductor techniques to prepare graphene semiconductor devices.

The invention discloses a method for reducing switch failures in an ultra-dense wireless network and belongs to the mobility optimization technique in wireless communication. The method comprises the following steps: configuring different initial switching parameters for UE at different speeds, and then automatically adjusting the switching parameters according to the switching history; calculating the failure times and the success times of switching within the given time window length, and thus providing a new method for dynamically adjusting switch parameters. In the ultra-dense network, under the condition that Picocells are densely deployed in the area, the method can realize self-adaptative adjustment for the switch parameters, effectively reduces the switch failure rates when the UE passes through the area with the densely-deployed Picocells, and can realize the balance of reducing the switch failure rates and reducing small ping-pong ball rate.

The invention discloses a computer-control polishing method based on a removal function prediction model, comprising the following steps: (1) carrying out first computer-control polishing on an unknown material A through a known material B; (2) theoretically predicting the removal function model of the material A; (3) and based on the prediction removal function model in the step (2), introducingan efficiency coefficient identification step in the subsequent computer-control polishing process. The method has the advantages of simple operation, high efficiency, wide application range and highpolishing precision.

The invention discloses a zero intermediate frequency transmitter, a receiver and a related method and a system and aims to solve the problem of local oscillation leakage in the conventional zero intermediate frequency system. According to feasible implementation approaches provided by the invention, the zero intermediate frequency transmitter can comprise a baseband processing circuit, a mixing circuit, a power amplification circuit and a signal detection circuit, wherein the baseband processing circuit is used for generating two-path I/Q baseband signals; the mixing circuit is used for mixing and superimposing the two-path I/Q baseband signals and two-path local oscillation signals to generate mixing signals; the power amplification circuit comprises N cascade power adjustment units and is used for adjusting the power of the mixing signals; the signal detection circuit is used for sampling and detecting the output signals of the number m grade power adjustment unit to obtain feedback signals; the baseband processing circuit is further used for evaluating and revising a matrix in accordance with the feedback signals and revising the two-path I/Q baseband signals to restrain the mixing circuit leakage and the local oscillation leakage from the output end of the mixing circuit to the number m grade power adjustment unit of the power amplification circuit.

The invention relates to testing technology, and particularly to a Bluetooth equipment testing method, a Bluetooth equipment testing device and a Bluetooth equipment testing system, thereby improving Bluetooth equipment testing efficiency and shortening Bluetooth pairing time. The Bluetooth equipment testing method is characterized in that to-be-tested Bluetooth equipment acquires identification information of Bluetooth testing equipment through reading preset testing configuration information; and the to-be-tested Bluetooth equipment performs active back-connection with the Bluetooth testing equipment based on the acquired identification information. Because the back-connected Bluetooth testing equipment is definite, the connecting process is definite, thereby shortening pairing time, improving testing efficiency and furthermore facilitating control to product testing. On the other hand, a one-to-one back-connection manner can realize simultaneous testing on a plurality of stations, thereby greatly improving testing parallelism and testing efficiency. Furthermore because only storage of identification information of the Bluetooth equipment is required in back-connection, simple testing facility and small volume of information to be stored are realized, thereby reducing testing cost and testing execution complexity.

The invention relates to a boundary system. The boundary system comprises a boundary line, a signal generation device, a signal detection unit and a control unit, wherein the signal generation device is used for generating a preset boundary signal and sending the preset boundary signal to the boundary line, and a magnetic filed can be generated when the preset boundary signal passes through the boundary line; the signal detection unit is arranged in an automatic walking device and is used for detecting the magnetic filed and generating a detection signal; the control unit is arranged in the automatic walking device and is used for receiving the detection signal and judging whether the automatic walking device is located in a working area or not; and the preset boundary signal is a signal having a first state and a second state which appear in an alternating way, and the mutation of the preset boundary signal exists in a junction position of the first state and the second state. The boundary system provided by the invention has the advantages that the structure is simple, and the cost is low.

The invention discloses a bluetooth door lock control device based on a mobile intelligent terminal and a management method thereof. The device comprises a microcontroller module, an RTC real-time clock module, a data recording module, a bluetooth module, a mobile intelligent terminal application software module and a door lock control circuit. The device disclosed by the invention has the beneficial effects that a three-stage verification mode of a bluetooth password (connection can be established when the password is successfully paired), instruction recognition and password authentication (a door lock can be operated when the instruction is accurate and the password is accurate) and identity recognition (the instruction is valid after the identity is verified) is adopted, the door lock can be operated after verification only, and the safety is improved. According to management, the method adopted by the device is extremely simple, the whole door lock system is controlled by virtue of operation of a manager, and the operation of a user is greatly simplified.

The embodiment of the invention provides a display panel and a display device, which relates to the technical field of display and does not need to reevaluate the manufacturing process and does not increase the complexity of the manufacturing process under the premise of improving the fingerprint identification accuracy. The display panel comprises a display area, a light emitting element and a light sensing element, wherein the display area includes an opening area and a non-opening area, and at least part of the display area is reused as a fingerprint identification area; the light emittingelement is located in the display area and comprises an anode layer, a light emitting layer and a cathode layer, and the light emitting layer is located in the opening area; the cathode layer in the fingerprint identification area includes a first film layer part and a second film layer part, at least part of the first film layer part is located in the opening area, the second film layer part is located in the non-opening area and provided with a plurality of holes, the light transmittance of the second film layer part is less than that of the first film layer part; and the light sensing element is located in the fingerprint identification area, and the light sensing element is located at the side, which is back to the light emitting surface of the display panel, of the holes.

The invention refers to the technical field of wind power and particularly relates to a lubricant cooler, a cooling lubricating system of a step-up gear box, a wind power unit and a low-temperature starting method of the wind power unit. The lubricant cooler of the invention comprises a radiating plate and a unidirectional valve arranged on a lubricant conveying pipeline; the radiating plate and the unidirectional valve are arranged in parallel, and the unidirectional valve and the lubricant conveying pipeline interconnected with the unidirectional valve are integrated on the radiating plate. The lubricant cooler of the invention can solve the problem that the wind power unit of the cooling lubricating system of step-up gear box is shutdown for failure for the lubricant blocks the radiating plate. The cooling lubricating system of the step-up gear box is simple in structure. The wind power unit can be effectively started under low temperature. The low-temperature starting method of the wind power unit can smoothly start the wind power unit under the low-temperature environment.

The invention discloses a double-returning protection switching method based on virtual private local area network service (VPLS), comprising the following steps: a provider edge device (PE) side judges that a bidirectional forwarding detection (BFD) state of an ascending pseudo wire is converted into an abnormal condition from a normal state, the state of a port connecting the PE side and a user edge device (CE) is modified to be abnormal; CE side detects that the port connected with the PE side is abnormal, business flow is switched to a standby chain; the invention discloses a double-returning protection switching system correspondingly; in the invention, due to linkage of the CE side and PW side, when the VC in the network has a problem, AC side is notified timely and the AC side is switched, therefore, the invention can avoid flow interruption and improve communication stability.

The invention discloses a capacitance sensor, comprising a sensor gauge head, inner electrodes and an outer electrode, wherein the inner electrode is composed of a plurality of independent electrodes; the inner electrodes are the same in inner and outer diameters and are coaxially arrayed; the inner electrodes respectively comprise a top compensation electrode, a multi-section measurement electrode and a bottom compensation electrode from top to bottom; each two sections of electrodes are connected through a connecting piece which is made of an insulating material; the outer electrode is sleeved at the outer parts of the inner electrodes through screw threads, is coaxially mounted with the inner electrodes and is commonly shared by each section of the electrode in the inner electrodes; and the sensor gauge head is connected with the outer electrode. According to the capacitance sensor disclosed by the invention, the influences on liquid level measurement of temperature, pressure, mediums and the like are eliminated and the precision of the liquid level measurement is improved; and furthermore, an electricity leakage phenomenon can be effectively avoided and the linearity of the sensor is guaranteed.

The invention provides a pressure sensor calibration method. The method comprises the following steps: S1, setting the temperature of a to-be-calibrated pressure sensor; S2, inputting different pressures into the pressure sensor at the temperature set in the S1; S3, acquiring response values of the pressure sensor under different pressures input in the S2; S4, acquiring a linear relation between the pressures input in the S2 and the corresponding response values in the S3; S5, determining the accuracy of the pressure sensor according to the linear relation acquired in the S4. With adoption of the pressure sensor calibration method and a pressure sensor calibration device, the pressure sensor working under different temperature conditions can be calibrated, additional measurement error is not introduced, meanwhile, the system complexity is not increased, and the whole device is safe, reliable and higher in universality.

The invention discloses a method for cascade-emitting communication channel codes and space-time codes in a multi-input multi-output frequency division multiplexing system. The method of the invention comprises: firstly, encoding information bits which are outputted by a information source in communication channel by an originating end and obtaining information bits and check bits, then, confirming whether the originating end needs carrying out second deletion or not according to the transmitting aerial number n and the average number of pilot frequencies which are needed by each sub-belt and confirming the order of a first deletion, the second deletion and interlace according to an interlace mode, modulating binary sequences which are obtained by the originating end and obtaining modulation symbols, transforming the modulation symbols from parallel to serial by the originating end, carrying out space-time encoding, and obtaining code words after encoding, and finally mapping the code words and the pilot frequency on different sub-carrier waves by the originating end and emitting through n strips of transmitting aerials. The MIMO+OFDM not only can obtain coding gains of the communication channel codes to the maximum but also can obtain diversity gains of the space-time codes through utilizing the invention.

The invention discloses a locked detection circuit applied to a phase locked loop (PLL) with dynamic reconfigurable frequency dividing ratio. The locked detection circuit comprises an exclusive or gate X1, two D triggers D1 and D2, an or not gate N1 and an N-bit counter C1. The locked detection circuit samples data output by the X1 through the D1 and D2; the A and B ends of the X1 are connected to UP and DOWN signals output by a phase frequency detector; the N1 is used for judging whether the pulse widths of the UP and DOWN signals are equal or not, if the pulse widths of the UP and DOWN signals are equal, the output of the N1 is high, the C1 starts to work, after the output of the N1 is kept at high level for N periods, the C1 outputs an effective LOCK signal and the PLL is locked; and if the pulse widths of the UP and DOWN signals are not equal, the output of the N1 is low, the C1 is kept at a reset state, the LOCK is low and the PLL is not locked. The locked detection circuit has a simple structure and can quickly and accurately detect the lock state of the PLL under any input reference frequency and output frequency.