32results about How to "Overcoming the problem of low efficiency" patented technology

The invention provides a dimension marking method for CAD. The method comprises the following steps: receiving primitive selection of a user in CAD drawing; identifying a primitive type of the selected primitive; identifying dimension of the selected primitive according to the identified primitive type; and marking the identified dimension on a dimension locating point. The invention also provides a dimension marking device for CAD. The method and device help improve efficiency of dimension marking in the CAD drawing, thus improving velocity of the CAD drawing.

The invention provides a combined type flow valve for liquid of a high-pressure large-flow alternating current servo direct-drive machine. An alternating current servo motor drives a push rod through the transmission of a thread and the push rod acts on a hydraulic transmission cavity which is sealed with hydraulic oil; when the push rod moves, the inner volume of the hydraulic transmission cavity is changed and a valve core moves to the same side to compensate the change of the volume, so that the movement of the valve core is controlled through controlling the movement of the push rod. The valve has the advantages of simple structure, accurate control and convenience for use, can directly use a computer to carry out digital control, has good buffering and positioning performances, can meet the requirements of positioning any point, can realize a closed ring system of electric feedback, and especially can be used for better solving the problem that the previous servo valve is sensitive to oil liquid pollution. The valve is wide in working pressure range and large in flow and can work under a very low oil supply pressure, and the dynamic performance is not greatly influenced by the low oil supply pressure; and the valve has fewer middle transmission links so that the efficiency of the system can be improved.

The invention discloses an adsorption intelligent information labeling method and device for a CAD system. The method includes the following steps that object information is added to user-defined primitives; selection of the primitives in a CAD plot by a user is received; the accessory object information of the primitives is identified; an information label is automatically generated at a designated position of the user; the adsorption function is achieved through constraint when the user drags the information label, and therefore the information label will not break away from or exceed the range of a labeled object. The device is composed of an entity primitive generation module, an entity primitive selection module, an information label generation module, an information label selection module, an information label adsorption module and a label information correction module. The adsorption intelligent information labeling method and device can improve the information labeling efficiency of drawing with the CAD software.

The invention provides an efficient phase change energy storing fresh air heat exchange system based on solar energy. The efficient phase change energy storing fresh air heat exchange system comprises a heat collection plate, a heat pipe, grading phase change energy storing equipment, a supporting rack glass cover plate and a thermal-insulating back plate; the glass cover plate is mounted at one side of a wall body; the glass cover plate is internally divided into a front cavity runner and a rear cavity runner; air enters the front cavity runner through an air inlet, rises along the front cavity runner and is subjected to heat exchange with the heat collection plate; the air falls along the rear cavity runner after a top-end flowing direction is changed by 180 degrees, and is subjected to heat exchange with the back side of the heat collection plate; the air enters the grading phase change energy storing equipment after being pumped through an air blower; the heat pipe is arranged between the glass cover plate and the wall body; the heat pipe and an outdoor end are connected with the heat collection plate; heat is sent to the grading phase change energy storing equipment after being extracted; and metal supporting racks are arranged above and below the grading phase change energy storing equipment. The efficient phase change energy storing fresh air heat exchange system provided by the invention has the advantages of being simple in machining principle, compact in system, and free from consumption except for the small air blower for guiding the air to flow; and green energy can be efficiently utilized.

An embodiment in the invention relates to a method and apparatus for determining the location of a POI. According to the method, a video acquired on the way by using an acquisition tool and a track correspondingly recorded in the process of acquisition are stored in advance. The method comprises the following steps: determining a video frame with the POI in the video; determining a track point, corresponding to the video frame, in the track according to the shooting time of the video frame and the recording time of the track corresponding to the video; determining the heading direction of the acquisition tool at the track point according to the locations of the track point and adjacent track points; determining a shooting direction corresponding to the track point according to the heading direction of the acquisition tool at the track point and the value of an included angle between a preset shooting direction and heading direction of the acquisition tool; and determining the location of the POI in the video frame according to the location of the track point and the shooting direction. Thus, automatic determination of the location of the POI is realized in the embodiment, and operation efficiency and speed are improved.

The invention provides a trap printing method which comprises the following steps: acquiring an object list through parsing a page file; identifying primitive objects with mutually independent space positions from the object list; according to an adjacency relation and color difference between independent primitive objects, determining a trap printing position and a trap printing color. The invention also provides a trap printing apparatus which comprises an acquisition module used for acquiring the object list through parsing the page file, an identification module used for identifying primitive objects with mutually independent space positions from the object list and a trap printing module used for determining the trap printing position and the trap printing color according to the adjacency relation and color difference between the independent primitive objects. According to the method and the apparatus in the invention, an effect of rapid trap printing is realized.

The invention provides a high-pressure and high-flow alternating-current servo direct-driven eccentric shaft type flow valve. After the speed of an alternating-current servo motor is reduced through a harmonic speed reducer, the opening / closing motion of a valve core is driven through an eccentric crank shaft and a connecting rod mechanism; and the valve has the advantages of simple structure, accuracy for controlling and convenience for use. A computer can be directly used for carrying out digital control and the flow valve has good buffering and positioning performances, can meet the requirements of positioning at any point and can realize a closed-loop system through an electrical feedback; and particularly, the flow valve can better solve the problem that an previous electric liquid servo valve is sensitive to oil liquid, and also overcomes the disadvantages that the previous electric liquid servo valve is difficult to use in high-pressure and high-flow environments and the like; and the work pressure range of the valve is wide and the flow is high, so that the valve can work under a very low oil supplying pressure and the influences of the oil supplying pressure on a dynamic performance are very small; and a few of middle transmission links are used so that the efficiency of the system can be improved.

The invention discloses a balanced high-pressure large-current AC (Alternating Current) servo direct-driven cartridge valve, comprising an AC servo motor, wherein the AC servo motor and a harmonic reducer are connected to a valve sleeve, the output shaft of the AC servo motor is connected with the input shaft of the harmonic reducer, the output shaft of the harmonic reducer is connected with a leading screw by a coupler, the leading screw is provided with a sliding block, the sliding block is connected with a linear displacement sensor, the sliding block is connected with a valve rod, the end of the valve rod is provided with an external thread, a valve core is provided with an internal thread, the valve rod drives the opening and closing of the valve core by internal thread connection, a small end cover is connectedly fixed on a valve seat, and is fixedly connected with a valve core sleeve, a valve sleeve is inserted in the valve seat and fixed in the valve seat by a top end cover, the top end cover is fixed with the valve seat, and the valve seat is installed in a hydraulic system by a plug-in manner, so that the influence of the oil-liquid pressure on the valve is reduced, and the instant hydraulic power of the valve is small. According to the invention, as a closed-loop control servo direct-driven manner is adopted, the valve has the advantages of simple structure, rapid response, accurate control and high linearity.

The invention provides a method and a device for splitting a document. The method comprises the following steps of: analyzing a content file with an xml format of an original document and a paragraph style file; searching a paragraph position of each paragraph style applied to the paragraph style file in the content file, and respectively outputting the searched paragraph content at each paragraph position to different new documents. The invention provides the device for splitting the document. According to the embodiment of the invention, content in the content file is split through a paragraph style in the paragraph style file by analyzing the content file of the original document and the paragraph style file, and the extracted content is stored into a new document, so that the problem of lower efficiency of directly extracting the content from the document manually and splitting into the new document is overcome, and an efficient and quick effect is achieved.

The present invention provides an image coding method and device and an image decoding method and device, wherein the coding method includes: determining the scanning mode parameters of the coding block, wherein the scanning mode parameters include at least one of the following: The area indication parameter of the scanning area is used to determine the scanning indication parameter of the scanning order of pixels in the scanning area in the coding block; determine the predicted value of some or all pixels in the coding block according to the scanning mode parameter; encode the coding block according to the predicted value, And write the encoded encoding result into the code stream. The present invention solves the problem of low efficiency caused by only scanning in a fixed manner in the related encoding / decoding technology, and further achieves the effects of improving encoding compression efficiency and decoding and decompression efficiency.