47results about How to "Achieve design goals" patented technology

The invention provides an antenna and a radio-frequency signal transmit-receive device. The antenna comprises a substrate and an antenna structure arranged on the substrate. The antenna structure comprises a grounding plane, a first radiation portion, a second radiation portion, a metal coupling portion, a third radiation portion and a feed-in point. The grounding plane comprises a grounding point; the first radiation portion has first bending, second bending and an open end; the first radiation portion extends from the grounding point, and the open end of the first radiation portion is adjacent to the grounding plane; the second radiation portion extends from the section between the first bending point of the first radiation portion and the grounding point to the section between the second bending of the first radiation portion and the open end; the metal coupling portion is adjacent to the grounding plane, the second bending and the open end of the first radiation portion as well as the second radiation portion; the third radiation portion is arranged between the second radiation portion and the grounding plane and extends from the metal coupling portion to the section between the first bending of the first radiation portion and the grounding point; and the feed-in point is coupled at the connection place of the third radiation portion and the metal coupling portion. The radio-frequency signal transmit-receive device can receive and send a plurality of radio-frequency signals of a plurality of frequency bands.

The invention relates to the micro-digital sun sensing device and belongs to the attitude sensing device technology field. The sensing device comprises the light inducting device, the image collecting module composed of the image sensor, the attaching circuit an the image collecting control circuit, the image processing and communicating module. The light inducting device is layer-superposing structure with the narrow-belt or neutral optical filter, the transmission base plate, the mask layer and the glistening-proof layer from up to down. The mask layer adopts the small-hole array structure with unequal space; the small-hole array structure opens the square holes with two sizes, and the small holes and the rows of the different space appear alternatively. The invention can reduce the noise of the imaging circuit system and the random measuring error, and reduces the size, the energy consumption of the sensing device.

The invention discloses a centralized monitoring system and method for a gas alarm apparatus of iron works. For a gas alarm apparatus without a communication interface and 4-20mA standard signal output, a signal isolator and a data acquisition module are adopted for signal acquisition; for a gas alarm instrument with a communication interface, a serial port server is used for acquisition, and theacquired signal is sent to a switch. The system comprises a real-time monitoring module, an alarm statistics module, a point inspection management module, a statistics report module and a content monitoring image of a point inspection record report, so that a user can perform centralized monitoring. The system has the advantages that the system achieves the tracking and management of the use condition of the on-site gas alarm apparatus, so that safety management personnel in an office can monitor and manage the gas leakage condition of a whole plant and the operation condition of the alarm apparatus through a computer, thereby effectively improving the safety management efficiency and the safety management level. After the system is put into use, the gas poisoning accidents do not occur, the design objective of the system is achieved, and an ideal effect is achieved.

The invention provides a wind power conductive slip ring electric contact abrasion tester structure. The tester structure can be used for conducting a ring and brush wire accelerated charged abrasion test and conducting sliding friction abrasion and dynamic contact resistance state detection. The tester structure has a cuboid sheet metal structure, and is mainly formed by a case cover, a front panel, a cabin door and a baseplate; an abrasion test cabin, a main shaft driving control unit, a loaded contact force and friction force measuring unit and an abrasion test cabin temperature control unit are arranged in the tester structure; the friction pair contact pressure, the abrasion rotating speed and the number of turns can be set, the data acquisition display and transmission functions are achieved, the use is convenient, the operation is simple, and the tester structure can be applied to abrasion test occasions of various conductive slip rings.

The invention belongs to the field of pneumatic transmission, relates to the field of single-blade swing cylinders, in particular to a high-temperature-resistant single-blade swing cylinder. The purpose of the present invention is to provide a high-temperature-resistant single-blade swing cylinder, which can meet the high-temperature durability test requirements of a certain product. The technical solution of the present invention provides a high-temperature-resistant single-vane swing cylinder, including an upper cover, a housing, an upper sealing gasket, a blade sealing strip, a stop rod, a blade position indicator rod, a blade shaft, a flat key, and an upper cover Sealing ring, stop pile, positioning pin, housing sealing strip, lower cover, lower sealing gasket, lower cover sealing ring.

The invention relates to a multi-degree-of-freedom metal rubber damper, and belongs to the field of mechanical vibration isolation. The multi-degree-of-freedom metal rubber damper comprises a base connector, a metal rubber bar set A, a load connector, a metal rubber bar set B, a sleeve set, a screw set and a nut set. The base connector and the load connector are coaxially arranged up and down, the metal rubber bar set B is arranged in the load connector, the metal rubber bar set A is arranged in the base connector and is inserted into the load connector, and metal rubber bars in the metal rubber bar set A are coaxial with metal rubber bars at the corresponding positions in the metal rubber bar set B. Sleeves in the sleeve sets are inserted into center holes of all the metal rubber bars in the metal rubber bar set A and the metal rubber bar set B, and all screws in the screw set are inserted into the sleeves in the sleeve set and are connected with all nuts in the nut set in a threaded mode to constitute a whole. The multi-degree-of-freedom metal rubber damper achieves the purpose that damping can be provided by the metal bars no matter what sort of relative movement is made between a base and a load, thereby being very suitable for spaceflight structures.

The invention belongs to mesh data management and sharing technical area. Characters are that self-similar layered isomorphic architecture is adopted in the system; granularity of node in the system can be adjusted arbitrarily. Thus, flexibility and extensibility of system are increased. Moreover, concept of super node is introduced in the system. Architecture full connection is adopted among these super nodes. The architecture reduces spending brought by huge route table to be maintained among nodes as well as influence on system caused by adding and quitting node frequently. The system includes two kinds of data: local metadata and global metadata. Global metadata makes storing and transferring data simpler; but user does not need to change custom of use. Parsing method in step-by-step is adopted for searching metadata. Thus, message for querying location of copy is limited in local area as far as possible.

The invention discloses a program plagiarizing detection method and system based on the combination of attribute counting and a structural measurement technology. The method comprises the following steps that: submitting a program to be detected to a system, and receiving a detection task submitted by a user via the system; preprocessing a source program to remove useless data; adopting a GST (Greedy String Tiling) character string matching algorithm to calculate a similarity, judging whether a decision condition is met or not on the basis of a similarity numerical value obtained by the GST algorithm through a decision function, if the decision condition is met, returning a result, and ending detection; if the decision condition is not met, carrying out an operation of a next step; according to the characteristics of the C language, selecting an attribute characteristic element and a structure characteristic element from a source program, and then, calculating the similarity on the basis of the method for combining the attribute counting with the structural measurement technology; and synthesizing the similarity measurement results of two times to give a similarity evaluation level. Through the method for extracting code attribute characteristics and structure characteristics, the time complexity of the system is lowered, and the detection accuracy of the system is improved.