55results about How to "Periodic" patented technology

The invention discloses a precise mold of vehicle accumulator shell injection molding parts. The precise mold comprises a front mold and a back mold; a front mold core is fixed on an upper template; a back mold core is fixed on the upper template, and is opposite to the front mold core; the front mold core and the back mold core are closed to form a product mold cavity; a core pulling slide block is arranged at the side part of the mold cavity, and is embedded between the front mold core and the back mold core; slide blocks are arranged at two side parts of the back mold core; the core pulling slide block is connected to the slide blocks; the two slide blocks are guided to slide through two inclined guide columns relatively independently arranged; the inclined guide columns are fixed at two side parts of the front mold core, and the lower end parts are inserted in the slide blocks; the lower side of a runner is communicated with the mold cavity; and a return device is arranged between the back mold core and the slide blocks. The precise mold of the vehicle accumulator shell injection molding parts improves the product performance of the injection molding parts, is short in molding period and high in production efficiency, is low in wear of an accumulator mold by a flux, and can mold the injection molding parts with complex shapes, clear surface patterns and marks and high size precision in large batches.

The invention discloses a high-cabinet personnel scheduling prediction method based on bank outlet business data. The method comprises the steps of obtaining first historical data before an outlet ends a first time node; establishing a prediction model, and based on the first historical data, generating scheduling data required by prediction of the network points in the period from the first timenode to the second time node; acquiring second historical data before the website stops the second time node; establishing a calculation model, and generating actually required scheduling data of a network point between the first time node and the second time node based on the second historical data; and modifying parameters of the prediction model based on the difference between the actually required scheduling data and the actually required scheduling data. According to the method, the number of high-cabinet scheduling people in each website within several days is predicted, the labor cost is saved, and the efficiency is improved.

The invention relates to a visible light communication system based on a power line carrier with the code rate self-adapted to a QC-LDPC coding way and an operating method of the visible light communication system. The visible light communication system comprises an QC-LDPC coding module, a PLC module, an intermediate switching module, a VLC module and a QC-LDPC decoding module which are connected in sequence, wherein the PLC module is connected with the intermediate switching module through a power line; the VLC module comprises an LED driver, an LED, a photoelectric detector, an optical power meter, an amplifier and a wave filter which are connected in sequence. By virtue of the QC-LDPC coding way, the reliability of the system is improved; a proper code rate is regulated through a self-adaptive way, so that the redundancy of transmitted information is reduced, the network cost is reduced, and the transmission rate is increased.

The invention provides an inertial navigation positioning method based on a CCD star sensor and an accelerometer, which comprises the following steps of: (1) after initial alignment is finished, acquiring the output data of the quartz flexible accelerometer; (2) acquiring the output of the CCD star sensor; (3) acquiring the output positioning information in an inertial navigation algorithm in an error-free state to obtain the transfer matrix of an earth based coordinate system, i.e. an e system relative to a navigation coordinate system, i.e. an n system; (4) solving the transfer matrix of the e system relative to an i system; (5) resolving to obtain an attitude matrix through the information given in the steps (1), (2), (3) and (4); and (6) converting the accelerometer onto the navigation coordinate system from a carrier coordinate system through the attitude information resolved in the step (5), and outputting the carrier speed and the navigation positioning information. The invention has position information feedback, thereby having the advantages of periodicity and high positioning precision.

The invention discloses a robust watermarking technology for medical images on the basis of Arnold scrambling transformation and DWT (discrete wavelet transform)-DFT (discrete Fourier transform), and belongs to the field of multimedia signal processing. The robust watermarking technology includes embedding watermarks and then extracting the watermarks, and particularly includes steps of (1), performing Arnold transformation for watermarks to be embedded; (2), performing DWT for a medical image, performing DFT for approximation sub-images of the medical image, and extracting vectors of a feature; (3), generating a binary logic sequence via a Hash function by the vectors of the feature and the preprocessed watermarks so as to complete the process for embedding the watermarks; (4), performing DWT for a medical image to be measured, performing DFT for approximation sub-images of the medical image to be measured and extracting vectors of a feature; (5), extracting watermarks by the aid of the Hash function and a binary logic sequence stored in a third party; and (6), obtaining the original watermarks via Arnold inverse transformation so as to complete the process for extracting the watermarks. The robot watermarking technology has an important significance in protecting information of patients during remote medical treatment.

Example embodiments presented herein are directed towards a wireless device (101) and a network node (102, 103, 104, 110, 111, 115), and corresponding methods therein, for prescheduling uplink communications in a wireless network. Such prescheduling is performed prior to the time the uplink communication is needed. According to the example embodiments, the prescheduling is performed with the network node having knowledge of a communication pattern of the wireless device via at least one prescheduling parameter obtained by the network node (the base station, or a core network node), either transmitted by the wireless device or else retrieved by the network node from subscription or historical data. The prescheduling parameter may relate to the application or service that has been activated,and a prescheduling cancellation is sent when it is halted.

The invention provides a super-hydrophilic metal surface micro-nano structure and a manufacturing method thereof. The structure comprises a metal substrate base body, and three groups of mutual-angledparallel groove arrays formed by grooves and prismatic protrusions are formed on the metal substrate base body. The manufacturing method comprises the following steps that firstly, a metal substrateis provided; then the metal substrate is cleaned and dried; then a laser beam is used for scanning the metal surface to obtain the metal substrate with a rough gully-shaped micro-nano structure on thesurface; and finally, deionized water is used for ultrasonically cleaning the metal substrate and the metal substrate is dried. According to the manufacturing method, the rough gully-shaped micro-nano structure is constructed on the metal surface by virtue of a laser etching technology, the super-hydrophilicity is given to the surface of the metal, the structure is simple, and the manufacturing method is environment-friendly, simple and efficient.

The invention discloses a method and device for capturing L2C signals in the GPS. The method includes the steps of firstly, generating periodic local CM code sequences, and adding the number zero behind each CM code sequence; secondly, setting up local composite codes according to the CM code sequences which are generated in the first step and where the numbers zero are added; thirdly, sampling the local composite CM code sequences generated in the second step to obtain N point long sequences and processing the N point long sequences; fourthly, sampling intermediate-frequency signals processed by the front end of a receiver according to the sampling rate; fifthly, conducting digital down conversion on the signals sampled in the fourth step to obtain carrier frequency cells to be searched; sixthly, selecting N point receiving signals from the fifth step to be processed; seventhly, multiplying the result obtained in the third step by the result obtained in the sixth step, and conducting processing to obtain N related values; eighthly, detecting the (W+nN)th code phase position according to the code phase position corresponding to the largest related value if the largest related value in the seventh step is larger than a preset capturing threshold; ninthly, adjusting a digital down conversion unit so as to search the next carrier frequency cell till the whole space to be searched is completely searched if no related values larger than the preset capturing threshold exist in the seventh step.

The invention relates to a monitoring and management system based on a lithium ion super capacitor. The system is composed of a main power circuit, an active balancing unit, a collection unit, and a central control unit. The main power circuit is formed by series connection of a current sensor, a fuse, a super capacitor group, a main positive contactor, a total voltage sensor and a DC/DC bi-directional converter. The active balancing unit connected with the super capacitor group carries out single voltage balancing on the super capacitor group. The collection unit connected with the super capacitor group and the active balancing unit collects single voltage information and temperature information from the super capacitor group and forwards an instruction to the active balancing unit. The central control unit connected with the collection unit, the current sensor, the main positive contactor, the total voltage sensor and the DC/DC bi-directional converter exchanges data and instructions with the collection unit and the DC/DC bi-directional converter, receives data from the current sensor and the total voltage sensor, and controls on or off of the main positive contactor. The system has the following advantages: the control strategy of the super capacitor group is mastered as a whole; and charging and discharging operations of the super capacitor group are controlled based on needs.

The invention provides a multivalent aptamer DNA nano ladder and a preparation method and application thereof. Natural DNA molecules are used as raw materials, on the basis of the DNA origami theory,the DNA nano ladder is constructed by utilizing the special property of a rolling circle amplification product, a large number of aptamers are introduced, a drug delivery system which is simple in design and high in drug loading capacity and has target specificity and biocompatibility is constructed, and through aptamer or drug replacement, the carrier can also be applied to various types of target cells.

The invention discloses a video synchronous sending method supporting high-resolution LED dome screen display, which belongs to the technical field of video synchronous processing, and is characterized by comprising the following steps: a, dividing any single channel 4K high-resolution video frame into N parts of data; b, performing data caching on each part of the video data by an interval N-rowcaching mode, and sequentially storing the video signals by taking N address blocks as a group; and c, taking out the video data from the data cache, and respectively sending the video data to N gigabit Ethernet ports in a parallel sending mode according to 2160/N rows of data in each channel by taking the groups as units until all the groups are completely sent. For a single channel, a complete 4K high-resolution video frame can be split into multiple channels of Ethernet to be sent respectively, synchronous sending of the 4K high-resolution video frame in the channel can be guaranteed, and therefore 4K high-resolution LED dome screen display can be well supported.

The invention discloses a floating-type wave energy conversion device, which comprises a hollow shell, a wave-approach assembly for collecting wave energy, and a conversion assembly for converting thewave energy into electrical energy. The wave-approach assembly comprises wave-approach plates arranged outside the shell, and wave-approach plate idler wheels connected with the wave-approach plates,a moving track is formed in the shell, and the wave-approach plate idler wheels are driven by the wave-approach plates to roll along the moving track; the conversion assembly comprises generators, asupporting sleeve rod, connecting rods and positioning gears, wherein the generators, the supporting sleeve rod, the connecting rods and the positioning gears are arranged in the shell, and the positioning gears are used for positioning the connecting rods; the positioning gears are in transmission connection with rotating shafts of the generators; a sliding piece slidably connected with the supporting sleeve rod is arranged on the supporting sleeve rod; one ends of the connecting rods are hinged to the sliding piece, and the other ends of the connecting rods are hinged to the wave-approach plate idler wheels; the connecting rods are further provided with racks engaged with the positioning gears; and the wave-approach plates are impacted by waves to drive the connecting rods to move through the wave-approach plate idler wheels, and the racks arranged on the connecting rods drive the positioning gears to rotate, and thus drive the generators to generate electricity.

The invention relates to the technical field of water supply pipe network management, and discloses a water fingerprint prediction algorithm, which comprises the following steps of: 1) obtaining historical data of partitions needing to be calculated; 2) predicting data in the future 24 hours by using a time sequence method; 3) calculating data in the future 24 hours by using a moving average mode;4) calculating data in the future 24 hours by using a linear regression mode; 5) using a Kalman filtering method to integrate the actual collection data and the above two calculation data; and 6) calculating different confidence intervals of each algorithm by using a Kalman filtering algorithm. According to the algorithm, the credibility of various algorithms is calculated through Kalman filtering; prediction of comprehensiveness, compared with the prior art, the method has the advantages that the method can cope with various different special conditions, the application range is wider, the selected centralized basic algorithms have different characteristics and adapt to different scenes, and the situation that abnormal changes of returned data may be caused by various reasons and normalmonitoring and analysis of the data are affected by water meter flow data collected by remote transmission equipment is avoided.