170results about How to "The realization principle is simple" patented technology

The invention discloses a method of mobile phone navigation in a library and a system of the mobile phone navigation in the library, mainly aiming at solving the problem that a reader is time-wasting for searching books in the library and is easy to be lost. The method for searching the books in a navigation way comprises the steps of: computing information of a target object and information in a data base in a comparing way to confirm a target position, and computing information of a reference object and information in the data base in a comparing way to confirm a reader position; and planning an optimum book reaching route according to the information of the target position and the information of the reader position, and giving a book searching route prompt from the current position of the reader to the position of a series of target books, so that the navigation is realized. The book searching navigation system mainly comprises a bar code (including a one-dimension code and a two-dimension code), a smartphone, a database, a server and the like.

The invention discloses a method for realizing cross-domain request callback on a webpage, which belongs to the technical field of networks. The method comprises the following steps: opening a home-station webpage by a source user, and loading an external-station webpage on the home-station webpage through a webpage frame; automatically generating the webpage frame and loading a home-station callback processing page in the loaded external-station webpage; when the processing on the external-station webpage needs to change the contents of the home-station webpage, informing the callback processing page embedded into the home-station webpage of the contents required to be processed through changing the link address and parameters of the embedded frame; and after the callback processing page embedded into the home-station webpage receives a processing instruction, invoking a parent webpage processing function of the callback processing page to operate the home-station webpage, thereby realizing the cross-domain request callback on the webpage. The method is realized completely based on the webpage, and is implemented through the nestification of the frame components of the webpage without the support processing of an application system of a third party, therefore, the method is convenient, fast and efficient.

The invention provides a logistics package arrangement system based on an intelligent robot. The system comprises a logistics package detecting and adjusting platform surrounded by mechanical arm baffle plates in six directions of up, down, front, back, left and right; conveying belts are arranged on two sides of the lower mechanical arm baffle plates; each mechanical arm baffle plate is connected with a mechanical arm through a rotating joint; image label identifying equipment for acquiring logistics package surface images to determine planes of logistics labels is respectively arranged in center of each mechanical arm baffle plate; each mechanical arm is connected with a corresponding driving unit; and the image label identifying equipment and the driving units of all the mechanical arms are both connected with a central processing unit. The invention further provides a logistics package arrangement method based on the intelligent robot. The system enables logistics packages to always keep upward labels through robot processing, so that the working efficiency of a logistics system is improved, and the logistics cost is reduced; and the system is simple in realization principle and low in cost, achieves a certain robustness on different packages, and is convenient in wide-range popularization and application.

The invention discloses an LLC primary side constant current control device and a compensation current signal extraction method. The control device receives voltage signals at two ends of a transformer winding of a converter and sampled primary side resonance current signals, extracts first resonance interval current signals from the primary side current shaping signals according to a time interval, shapes the first resonance interval current signals according to the voltage polarity of the transformer winding, adds bias voltage and obtains first resonance interval average current signals after average processing. The method includes the steps of taking the initial and end current values of the shaped and biased primary side current shaping signal in the first resonance interval, summing the initial and end current values to solve the mid-value and obtain a compensation current signal, and subtracting the compensation current signal from the average current signal in the first resonance interval to obtain a signal reflecting the average value of the output current. The invention can omit an optical coupler and a secondary side feedback circuit, and effectively improves the stability of the circuit. In addition, the primary side constant current control device can be further integrated into a single chip, and the circuit cost is further reduced.

The visual chessboard recognizing system belongs to the field of visual recognizing technology. The present invention includes: chessboard, operating box, image card, PC, CCD camera, support and light source. There are support set over the chessboard, one CCD camera and several light sources fixed on the support, PC connected via data cable with the CCD camera and with image card, and operatingbox beside the chessboard. The present invention is matched with Chinese chess master robot and has the effects of using common chessboard and chessmen and CCD equipment with low cost, simple and reliable principle, strong anti-jamming capacity, high sensitivity and high stability. The present invention is suitable for man-computer playing of Chinese chess, Weichi, gobang and other chesses.

The present invention discloses a GPU-based real time dynamic water surface analogy method. In the method, a FX effect document is compiled firstly; time-based periodic perturbation is added to each summit normal in the FX effect document, refraction and reflection vectors are calculated, and refraction veins and reflection veins are sampled to obtain a refraction color and a reflection color; subsequently, the refraction color and the reflection color are mixed by a simplified Fresnel mixed formulation; then a 3DS Max is used for establishing a pool model, the FX effect document is applied to the model as material, and each summit is endowed with normal by normal mapping. In the procedure, a scene is rendered into a frame cache and is used as refraction veins to be transferred to a GPU Shader; then a camera is changed to the position symmetrical with the waer surface; reflection veins are obtained by rendering again and are transferred to the GPU, thereby forming a dynamic water surface effect. The present invention uses the GPU technology to realize a dynamic water surface analogy arithmetic which can completely meet the real time requirement.

The invention belongs to the technical field of networks, and particularly relates to a method for realizing whiteboard full-screen synchronization on a web page, which comprises the following steps that: a user opens the web page and loads a flash plug-in, and the flash plug-in establishes permanent connection with a Socket server and starts monitoring; when operating the web page to perform whiteboard full-screen operation, the user calls a Flash interface and transmits whiteboard full-screen state information in, and then the flash plug-in calls an application program interface (API) to transmit data to the Socket server; and a target user opens the web page and loads the flash plug-in, and the flash plug-in establishes the permanent connection with the Socket server, starts the monitoring, and when receiving the full-screen state data from the Socket server, calls a web page whiteboard full-screen processing function to perform full-screen operation processing on a whiteboard so as to realize the whiteboard full-screen synchronization. In the method, the whiteboard full-screen synchronization can be conveniently, fast and efficiently realized completely based on the web page.

The invention discloses a device and method for gripping and delivering seedlings of a pot seedling transplanter. The device includes a chassis, a seedling transferring mechanism, a seedling grippingand delivering mechanism, a seedling feeding mechanism, a pneumatic mechanism and a controller. The seedling transferring mechanism, the seedling gripping and delivering mechanism and the seedling feeding mechanism are fixedly installed on the chassis. The seedling feeding mechanism accurately delivers the seedlings into a duck mouth or other planting mechanisms installed in the chassis for planting, the seedling transferring mechanism transfers a seedling plate to the lower portion of the seedling gripping and delivering mechanism, the seedling gripping and delivering mechanism grips and deliveries pot seedlings into the seedling feeding mechanism, and the seedling feeding mechanism feeds the transferred seedlings to the left and right planting mechanisms. The whole set of device achievesthe works of delivering, gripping, feeding and spacing the seedlings under the mutual operation and cooperation of a mechanical mechanism, the pneumatic mechanism and the controller. The device and method effectively liberate manpower, reduce the labor intensity of farmers, reduce the cost of agricultural production, benefit the increase in production and income of the farmers, and promote the development of productivity to a certain extent.

The invention discloses a vortex phase plate-based laser beam reference calibration method and a vortex phase plate-based laser beam reference calibration device. After the laser emitted by a laser device is reflected through a reflector and a pyramid prism, phase coding is performed on the laser beams by adopting a vortex phase plate; an interference dark spot serving as a position reference of the laser beams is generated in the center of the coded parallel beams by using the far field interference diffraction principle of the parallel beams, and the position of the dark spot is determined by the central point of the vortex phase plate, is not changed together with the drift of the beams and is not affected by the quality of light spots; and finally, the central position of the dark spot is acquired through a charge coupler. The reference can be used as the reference for linearity error detection of a linear guide rail or the reference for monitoring the two-dimensional position change of an object. The device has simple structure and avoids introducing additional errors; the system has strong stability and is favorable for practical application; and the positioning is accurate and is not easily affected by the surrounding environment.

The invention discloses a double-computer hot standby method based on memory page replacement synchronization. The double-computer hot standby method based on the memory page replacement synchronization comprises the following steps of (1) establishing a double-computer framework topology with a main computer and a standby computer; (2) creating a key continue data share memory; (3) storing key continue data into a corresponding share memory in real time; (4) carrying out share memory page snapshoot and page synchronization on a memory page; (5) controlling double computer switching; (6) downloading the key continuous data, and seamlessly continuing operation of a computer system to finish double-computer hot standby when the standby computer is switched to be the main computer after the double computer switching is finished. According to the double-computer hot standby method based on the memory page replacement synchronization, which is disclosed by the invention, undisturbed switching between the start of the standby computer and the recovery of the main computer can be realized, and the service is of the continuity; secondly, by utilizing an advanced double-computer detection manner, the hardware and the software of double computers can be detected, and the interior of programs can be deeply detected, so that the reliability and the usability of the system are effectively improved, and the double computer switching time only is only a few seconds.

The invention belongs to the technical field of network, in particular to a method for turning off a camera on a webpage. The method comprises the following steps: a home station webpage is opened by a source user, a Flash plug-in module is loaded by the webpage, Flash calls a relevant API (Application Program Interface) to turn on the camera, a user clicks to turn off the relevant function of the camera or close the webpage and the like when needing to turn off the camera used by the webpage, the webpage adopts a circulation mode to wait that the camera state is changed into a success state, the API relevant to the Flash is called to turn off the camera, the camera state is changed into the turnoff success state after the camera is turned off, and the webpage automatically exits circulation wait and performs subsequent processing after detecting the turnoff success state. The method can be realized completely on the basis of the webpage without the support of a third-party application system, can effectively prevent the camera from being occupied without reasons, ensures the safety of user privacy, and is convenient, quick and efficient.

The invention belongs to the technical field of aircraft control and particularly relates to an autonomous parachute opening safety protection method and system for a small aircraft. A reliable safety protection algorithm is provided, the flight height, the flight attitude and system electric quantity are used as input variables, a gas generator detonation control command and a power source management command are used as output variables, meanwhile, the flight attitude and system electric quantity information affecting system safety work are taken into consideration, meanwhile, a denotation signal and power electricity are controlled, and safety is improved. The principle is simple, and no matter in the aspects of software implementation or hardware implementation, no obstacles exist. The system is simple in structure, easy to implement and low in cost. The threat caused by flight attitude unstability to flight safety is fully considered, the threat caused by too low electric quantity to flight safety is considered as well, meanwhile, damage possibly caused by an unfolded canopy to rotors is considered, and the effectiveness of the system is fully improved. The method and system have great market prospects and economic value.

The invention relates to the technology of automatic testing. The invention is to solve the problem that the existing Appium cannot perform the multi-thread processing, and provides an Appium multi-thread implementation system and method. The technical scheme can be generalized as follows: the Appium multi-thread implementation system comprises a RobotFramework, a configuration management module, an Appium service management module and an Appium multi-thread module. The system disclosed by the invention has the advantages of being simple in implementation principle, low in input cost, and suitable for the Appium multi-thread automatic testing.

The invention discloses a direct-current circuit time domain fault distance measuring method based on a continuous data window. The method includes 1, constructing transmission line decoupling matrix; 2, according to the transmission line decoupling matrix, performing decoupling transform on the voltage and current measured from two ends of a circuit; 3, calculating the line voltage distribution of two ends of the circuit; 4, constructing the fault location criterion based on the continuous data window. The method has the advantages that the fault transient accuracy is utilized fully, the positioning accuracy and reliability are high, the calculation complexity is low, and implementation is easy.

The invention relates to a method for optimizing wireless video TCP transmission, which comprising the steps of: collecting RTT information; receiving a report; setting a retransmission timer; processing the over time of the retransmission timer; and building an ACK report. Compared with the prior art, the method has a simple realization principle, and is effective to the most occasions with the wireless video TCP transmission. Furthermore, terminal node devices such as a video coder and a video display center, and the like are completely transparent, and the distribution of function modules are easy, so that the method can be used for a layer 2 switching device and a layer 3 route device.

The invention belongs to the technical field of networks and particularly relates to a method for synchronizing scroll bars. The method comprises the following steps of: operating in a webpage region by a user; when a mouse is operated to press a scroll bar to start moving, recording the height of the scroll bar in a rolling region to array variables; when the mouse is bounced up, stopping recording, simultaneously acquiring n records from the array variables at a fixed time by a program, sending the n records to other webpage terminal to be synchronized by calling a Socket interface of Flash, and clearing the n records from an array; receiving a message by a webpage terminal to be synchronized; and setting the height value of a scroll bar in a rolling region into a height value obtained from analyzing the message so as to realize the synchronization of the scroll bards. The method provided by the invention can be used for synchronizing the scroll bards in webpage rapidly and has the advantages of very strong timeliness, accuracy and high efficiency.

The invention discloses a method for monitoring network flow based on webpage realization. The method disclosed by the invention comprises the following steps: after a communication server authenticates authorities of received network processing operation instructions and the authentication is certified, a Flash plug-in calls an API (Application Programming Interface) to carry out network processing operations, and records the flow information of the network processing operations and then carries out statistical summarizing; and the Flash plug-in calls webpage functions, transfers and processes the flow information of the network processing operations. The invention discloses a system for monitoring network flow based on webpage realization; and the invention realizes safety monitoring of the network flow without downloading setup software.