363results about How to "High transmission accuracy" patented technology

A rotation angle sensor is provided for determining mechanical angular positions and transposing them into signals transferable through electricity. The sensor includes a housing (2), a rotation indicator (4) located outside of the sensor housing (2a) so that it can rotate and coupled with the sensor element (3) so it operates in a non-contracting manner through the wall of the housing (2). A sensor element (3) is located in the interior of the housing (2). An intermediary element (5) is rotationally supported in the interior of the housing (2) between the sensor element (3) and the rotation indicator (4) and coupled to the rotation indicator (4) in a rotationally fixed, but non-contacting manner.

A resin composition for use in a hybrid lens containing a radical polymerizable monomer and a silane coupling agent. A specified di(meth)acrylate compound and a specified mono(meth)acrylate compound are used preferably as the radical polymerizable monomer. A hybrid lens molding die in which a glass lens base material and a glass mold of transferring an aspherical shape are opposed to each other is used, a resin composition for use in the hybrid lens is filled between them and UV-rays are irradiated from both sides of the glass lens base material and the glass mold to manufacture a hybrid lens in which the resin layer is bonded on the glass lens base material. A high performance hybrid lens having a resin layer of large thickness, with a large localized thickness and capable of increasing the aspherical quantity can be manufactured by the method.

The invention discloses a method for determining regional ionospheric layer delay. The method includes: collecting data; firstly establishing a regional ionospheric second-order term model according to the collected regional ionospheric VTEC (vertical total electron content) data; establishing a VTEC second-order term model and a fusion model of a neural network; adopting the fusion model to calculate VTEC values of puncture points of other positions in this area. By the method, computed results of the regional ionospheric layer delay are high in precision, and CORS (continuous operational reference system) measured results are wide in application range. A large number of engineering example application result analysis shows that precision of the computed results by the method is improved by 40% as compared to that by the VTEC second-order term model. Ionospheric layer space activity rules are high in fitting degree and high in timeliness, and convenience in use is brought. The ionospheric layer space activity rules can be obtained through analyzing according to fitting results of the neutral network, the ionospheric layer delay in any point in the area can be rapidly corrected, transmission precision and stability of radio waves can be improved, and technical support for better service for CORS can be provided.

A harmonic drive includes a circular spline, a flexspline meshed with the circular spline, and a wave generator abutted against the flexspline. Through a special parameter design to correct the perimeter curve of the wave generator, the meshing efficiency between the circular spline and the flexspline is increased, thereby improving the transmission accuracy and reducing the average load.

A memory device has a number of data terminals for transferring data signals and a number of strobe terminals for transferring strobe signals representing timing information of the data. The strobe terminals have a fixed signal level in an inactive mode of the memory device. The memory further includes a controller for reducing any signal instability of the strobe signals when the memory device switches from the inactive mode to a data transfer mode.

A harmonic drive gear reduction mechanism includes a rigid inner spline with 2(n+1) teeth and a tooth module of m, a flexible outer spline inserted in the rigid inner spline has 2n teeth and a tooth module of m, a flexible bearing inserted in the flexible outer spline, and a wave generator inserted in the flexible bearing. A thickness between an inner diameter of the flexible bearing and a pitch diameter of the flexible outer spline is t, a cross sectional profile of the wave generator consists four curves, the first and third curves have a radius of curvature R, R=m (n+1)−t, a central angle of the first and third curves is k, and 10<k≦60, the second and fourth curves and conjunction points between the second, fourth curves and the first, third curves can be first-order differentiated.

The invention discloses a ship or offshore mobile platform watertight equipment monitoring and fault diagnosis system. The ship or offshore mobile platform watertight equipment monitoring and fault diagnosis system includes a watertight equipment monitoring local monitoring system, a ship industrial Ethernet and a bridge remote monitoring alarm diagnosis platform, wherein the watertight equipment monitoring local monitoring system is used for acquiring the state signals of watertight equipment so as to generate monitoring signals, carrying out fault diagnosis on the state signals so as to generate corresponding real-time monitoring signals, and generating corresponding pre-diagnosis information according to diagnosed non-real-time complex faults; the bridge remote monitoring alarm diagnosis platform is connected with the watertight equipment monitoring local monitoring system through the ship industrial Ethernet; the pre-diagnosis information is inputted into the bridge remote monitoring alarm diagnosis platform through the ship industrial Ethernet so as to be applied to final fault diagnosis; and when a fault occurs, shutdown control signals are emitted, so that maintenance information can be further obtained. With the ship or offshore mobile platform watertight equipment monitoring and fault diagnosis system of the invention adopted, two-stage fault diagnosis can be carried out on a whole ship and an offshore mobile platform, and comprehensive monitoring and operation maintenance of watertight integrity and the watertight equipment can be realized.

A method includes a preparation step of preparing a transparent substrate having a precision-polished main surface, a surface shape information obtaining step of obtaining, as surface shape information, height information at a plurality of measurement points on the main surface of the transparent substrate that contacts a mask stage of an exposure apparatus, a simulation step of obtaining, based on the surface shape information and shape information of the mask stage, height information at the plurality of measurement points by simulating the state where the transparent substrate is set in the exposure apparatus, a flatness calculation step of calculating, based on the height information obtained through the simulation, a flatness of the transparent substrate when it is set in the exposure apparatus, a judging step of judging whether or not the calculated flatness satisfies a specification, and a thin film forming step of forming a thin film as serving as a mask pattern, on the main surface of the transparent substrate whose flatness satisfies the specification.

The invention discloses an intermittent linear conveying device, and belongs to the field of conveying equipment for intermittently and linearly conveying objects. A material moving cam (10) is connected with a material moving connecting rod (11), the material moving connecting rod (11) is connected to a vertical guide mechanism in a sliding mode, and a material moving shifting pawl (1) is fixedly connected with the vertical guide mechanism. The vertical guide mechanism is horizontally arranged on a vertical sliding plate (31) in a sliding mode, the vertical sliding plate (31) is vertically arranged in a sliding mode and is connected with a material moving lifting cam (16), the material moving cam (10) drives the material moving shifting pawl (1) to advance or retreat in place through the material moving connecting rod (11), and the material moving lifting cam (16) drives the material moving shifting pawl (1) to ascend and descend through the vertical sliding plate (31). A locating cam (14) is connected with a locating connecting rod (35) which is vertically arranged in a sliding mode, a locating shifting pawl (2) is fixedly connected with the locating connecting rod (35), and the locating cam (14) drives the locating shifting pawl (2) to ascend and descend. The intermittent linear conveying device has the advantages of being accurate in conveying position and reliable in motion, improving work efficiency and the like.

The invention relates to a steel structure positioning and conveying construction frame comprising a supporting bottom plate and a lifting device. The lifting device is mounted at the top of the supporting bottom plate and comprises a lifting adjustment mechanism, a limiting mechanism, a fixing bottom plate, a locking mechanism, side fixing branch chains and position clamping mechanisms; and the locking mechanism comprises a locking sliding plate, a locking pushing rod, a locking supporting frame, a locking hydraulic cylinder, a locking connecting plate, idler wheel frames, supporting idler wheels, locking clamping frames and clamping frame adjustment rods. According to the steel structure positioning and conveying construction frame, the problems that during conveying of existing I-shapedsteel, when the I-shaped steel is conveyed to the mounting position, the angle of the I-shaped steel cannot be adjusted, the I-shaped steel cannot be fixed in all directions during conveying of the I-shaped steel, security hidden dangers exist during conveying of the I-shaped steel, and the position of the I-shaped steel needs to be adjusted manually when the I-shaped steel is conveyed to the mounting position can be solved; and the functions that the I-shaped steel can be fixed in all directions and the I-shaped steel is conveyed to the proper position can be achieved.

The invention provides a positioning transmission apparatus which comprises a frame, a vertical lifting device and a two-stage horizontal slide device, wherein the frame is provided with a mobile cavity; the vertical lifting device comprises a guide part, a vertical drive mechanism, a push rod, an upper lifting plate and a lower lifting plate, and the upper lifting plate and a lower lifting plateare parallel to each other; the two-stage horizontal slide device comprises a slide plate, a horizontal drive mechanism, a push block and a loading plate for loading and unloading a substrate loadingbox; driven by the vertical drive mechanism, the lower lifting plate vertically moves up and down along the guide part, and drives the loading plate to synchronously move through the push rod; the horizontal drive mechanism drives the push block, and the push block drives the slide plate to horizontally slide; and when being subjected to the horizontal force, the loading plate can horizontally slide on the slide plate to extend to the position for loading and unloading the loading box. The positioning transmission apparatus can simultaneously realize height adjustment in the vertical direction and two-stage slide adjustment in the horizontal direction, occupies small occupied space, is simple in position alignment and convenient and labor-saving for operation, can enhance the transmissionquality and precision, and can also lower the transmission cost.

Provided are a mask blank substrate which has effectively and extremely high principal surface flatness while a reduction in the manufacturing throughput of the mask blank substrate is suppressed, a mask blank, and a transfer mask. Also provided are manufacturing methods therefor.A virtual reference surface that becomes an optically effective flat reference surface defined by a Zernike polynomial which is composed of only terms in which the order of a variable related to a radius is the second or lower order, and includes one or more terms in which the order of the variable related to the radius is the second order is set, and a mask blank substrate satisfying the condition that data (PV value) relating to the difference between the maximum value and the minimum value of the difference data between the reference surface and the measured shape of the mask blank substrate is one-eighth or less of an exposure wavelength (A) is selected.

The invention discloses a power module. The power module comprises a motor serving as a power source of the power module, a reducing mechanism used for matching rotational speed and transmitting torque and a motor output mechanism for rotational speed transmission. A stator module of the motor is provided with a hollow groove, the reducing mechanism is contained in the hollow groove, and the motor output mechanism is connected with the motor and the reducing mechanism at the same time. According to the power module, the reducing mechanism is arranged in the stator module of the motor; compared with the mode that in the prior art, a reducing mechanism is externally connected with a motor, the concept is unique, the size of the whole power module is greatly reduced, and the power module is more suitable for being arranged in a small machine; a one-level reducing mechanism or a multi-level reducing mechanism can be selected to be used as the reducing mechanism according to the demand of the whole power module, all the components are relatively independent and complementary, and the power module is flexible and changeable in use.

The invention discloses a data transmission method and system between a capacitive stylus and a touch screen, the capacitive stylus and the touch screen. The method comprises the following steps: the capacitive stylus acquires data to be transmitted; the capacitive stylus generates a first excitation signal according to the data to be transmitted and a receiving time sequence of a receiving electrode in the touch screen; and the capacitive stylus emits the first excitation signal to enable the receiving electrode to decode the first excitation signal according to the receiving time sequence to acquire the data to be transmitted. According to the method provided by the embodiment of the invention, when the capacitive stylus generates the first excitation signal, multi-level systems such as a ternary system and a quinary system are adopted for coding, so that the data transmission time is shortened, the data transmission accuracy is improved, and the user experience is improved.

The invention discloses a localized differential privacy data exchange method. The method comprises the following steps of firstly, defining a pseudo random number generation algorithm G, a differential privacy budget parameter epsilon and a data range L, enabling the client to disturb the one-hot vector V of the original data x according to the differential privacy budget parameter epsilon, recording the bit index with the value of 1 in V as Info, and recording the bit with the value of 1 after disturbance as N, selecting N different random numbers which are uniformly distributed from the L pieces of data by utilizing the algorithm G to obtain an array Indexes, adding random numbers offset which are uniformly distributed on [0, L-1] to each element to obtain a disturbance sequence, and sending a triple (seed, N, offset) to a server, and enabling the server to access a pseudo-random number generator G(seed) and restoring the disturbance vector according to an algorithm. The invention further discloses a computer storage medium based on the method. According to the method, the transmission and operation expenditure is greatly reduced while the privacy data transmission precision isguaranteed.

The invention discloses a Brillouin-scattering-based distributed measurement system, which comprises a first laser unit capable of splitting a laser beam into locally-oscillated light and pump light, a second laser unit capable of modulating laser into an orthogonal frequency division multiplexing light signal which can be used as detection light, a non-coaxial multi-core optical fiber and an optical fiber sensing unit, wherein one end of the non-coaxial multi-core optical fiber is used for receiving the pump light from the first laser unit, and the other end of the non-coaxial multi-core optical fiber is used for receiving the orthogonal frequency division multiplexing light signal; the optical fiber sensing unit is connected with the first and second laser units respectively. According to the Brillouin-scattering-based distributed measurement system, the non-coaxial multi-core optical fiber is used as a sensing optical fiber instead of a single-mode single-core optical fiber, so that the cross sensitivity of temperature and stress can be distinguished; the orthogonal frequency division multiplexing light signal is used as the detection light in the system instead of single-beam laser, so that the scanning speed can be increased, a plurality of frequency points can be scanned at one time, and detection response is quickened. The invention also provides a Brillouin-scattering-based distributed measurement method.

The invention discloses an underground full-well wireless transmission method. The method comprises the steps of transmitting underground measurement data to a ground signal receiving and sending device, and sending a control instruction to an underground instrument by the ground signal receiving and sending device, wherein in the step of transmitting underground measurement data to a ground computer, an underground wireless transmitter is used for transmitting detected underground data to an underground wireless transmitter; the underground wireless transmitter is used for encoding measurement data into electromagnetic wave signals and transmitting the electromagnetic wave signals to the ground or a wireless relay, if the distance is too long, the ground cannot receive the signals, the signals are transmitted to the ground signal receiving and sending device through the wireless relay, and the ground signal receiving and sending device is used for detecting the signals and decoding the signals into measurement data. The method can be used for stratum testing operation, the single-stage transmission distance is far larger than the currently adopted sound wave transmission distanceand the currently adopted short-distance wireless transmission distance, and the technical current situation of ground and underground bidirectional wireless transmission is fundamentally changed.

The invention discloses a composite material mechanical arm which comprises a T-shaped beam, wherein a saddle (6) is arranged on the T-shaped beam, an installing support (5) is arranged on the saddle, and the beam, the saddle and the installing support are made of carbon fiber / epoxy composite materials. Due to the adoption of the mechanical arm disclosed by the invention, the weight of the traditional mechanical arm is lightened, the rigidity of the mechanical arm can be improved and the flexibility is reduced; especially, when the mechanical arm rapidly rotates, the transmission precision of the mechanical arm can be greatly improved and the use requirement for high-precision transmission is met due to good damping resistance of the composite materials and small vibration of the mechanical arm. The composite material mechanical arm can be used as a transmission arm of an automatic transmission robot in a car assembling line.

A network terminal has communication section that communicates with other network terminals connected via a network, time-series data creation section that, at timing set beforehand, creates time information including a correspondence between an identification number of the own network terminal and a current time measured by a timer of the own network terminal and creates time-series data registering the time information, and additional registration section that, when the communication section receives the time-series data transmitted from another network terminal, creates time information including a correspondence between the identification number of the own network terminal and a current time measured by the timer of the own network terminal and additionally registers the time information to the time-series data received this time.

The invention provides a locking type turning transmission platform device comprising a stand, a vertical lifting mechanism, a locking assembly and a bearing platform, wherein the stand is provided with truckles and a movable cavity; the vertical lifting mechanism comprises a guide part, a drive shaft, a drive part, an propelling part, a lower lifting plate and an upper lifting plate, wherein theinput end of the drive shaft is connected with the drive part, and the output end is connected with the lower lifting plate contained in the movable cavity; the upper end of the guide part is fixed with the upper end of the stand, and the lower end penetrates through the lower lifting plate; the propelling part is fixed with the upper lifting plate and the lower lifting plate and penetrates through the stand; the locking assembly comprises a clamping and locking block and a press part, wherein the clamping and locking block is connected with the stand and provided with a suspended end, the driving shaft penetrates through the suspended end in a gapping way, and the press part is pivotally connected with the stand and drives the suspended end to clamp the drive shaft; and the bearing platform comprises a bottom plate used for bearing a substrate bearing box and rotationally connected with the upper lifting plate. The invention can not only enhance the transmission quality and accuracy of substrates and reduce the transmission cost, but also ensure the safety of substrate transmission.

The invention provides an urban underground gas pipeline monitoring system. The urban underground gas pipeline monitoring system comprises a monitoring terminal, a wireless transmission module and real-time communication monitoring equipment. Gas concentration and negative pressure wave signal data are collected through sensors; data fusion is conducted through a STM32C8T6 processor; leakage sources are located by adopting an improvement cross-correlation analysis method; processed data are transmitted to a ground concentrator module through a LoRa wireless module; and data detected by different detection nodes are fused by a concentrator, and then the data are transmitted to a OneNET cloud platform and terminal equipment for display through a narrow band Internet of things (NB-IoT) wireless communication module. When gas leakage occurs, the working staff in a monitoring center are notified in time to deal with the situation through alarm display and sending of alarm text messages. According to design principles, outstanding anti-interference and signal penetrating capacities of the LoRa wireless module are utilized under the ground to conduct communication so that stability of signals can be guaranteed; on the ground, through the NB-IoT module, uploading of data and intercommunication between users are achieved; and by means of the platform of Internet of things, updating, adjustment and pre-overhaul of products are convenient.

An inspection apparatus for a flat display panel comprising a panel inspection part to inspect electrical defects of a panel by applying electric power to the panel, a panel conveying part to load or unload the panel, and a panel feeding part to feed the panel to the panel conveying part. The inspection apparatus being designed to minimize occurrence of backlash in a rotation of a frame, and to enable the frame to rotate with a reduced velocity when starting or stopping the rotation of the frame, so that even a large panel mounted on the stage can be effectively protected by restricting impact and vibration. Furthermore, a driving means is positioned on the carriers, thereby preventing the abnormal operation of the panel conveying part possibly caused by broken pieces of the glass panel. Furthermore, a data plate and a gate base are movably mounted on the stage, so that locations of data probes and gate probes can be easily established according to the size of the panel, thereby minimizing consumption of time and manpower for replacing the adapter and aligning the probes.

The present invention relates to Chinese character constituting method with Chinese character parts in Chinese character electronicizing process. The Chinese character parts to constitute Chinese characters are used as basic elements in the memory, transmission, management and other Chinese character information processing. The Chinese character parts is the basic element set of all the Chinese character parts to constitute all the Chinese characters. During constituting one Chinese character, the structure of the Chinese character, the position, size and state of each parts in the Chinese character are described and used as the reference. In man-computer interaction, the computer processes the Chinese character information based on the basic elements, unlike available method, which selects Chinese character from library. The present invention makes the Chinese information system standard, high in efficiency, low in overhead and suitable for need of comprehensive electronicizing.

The invention discloses a data collection system (DCS) and an information processing method of a computer production simulation model. According to the information processing method of the computer production simulation model, communication modes of different protocols such as an industrial Ethernet communication technology, a process filed bus (PROFIBUS) communication technology, a multi point injection communication mode and an organic photoconductor (OPC) communication technology, wherein the industrial Ethernet communication technology is responsible for an engineer station and an operating personnel station of the DCS system and data exchange between a data server and a controller of the DCS system, the MPI communication technology is responsible for data exchange between each subsidiary controller of the DOS system and a corresponding OPC server, and the OPC communication technology is responsible for data exchange between the OPC servers and the corresponding computer production simulation models. By means of the information processing method of the computer production simulation model, the DCS system is directly or indirectly connected with the computer production simulation model through different communication protocols, and therefore the purposes that process data in the computer production simulation model is accurately and quickly acquired and instruction of the controller is transmitted to the computer production simulation model can be achieved.

The invention relates to multi-angle automatic steel structure placing equipment. The equipment comprises a supporting bottom plate, a lifting device and a grabbing device. The lifting device is installed on the top of the front end of the supporting bottom plate. The grabbing device is installed on the top of the rear end of the supporting bottom plate. The lifting device comprises a lifting adjusting mechanism, a limiting mechanism, a fixing bottom plate, a locking mechanism, a side fixing branch chain and a clamping mechanism. The grabbing device comprises a grabbing electric sliding block,a grabbing telescoping column, a grabbing top plate, a grabbing motor, a grabbing sliding groove, a grabbing sliding rod, a grabbing supporting plate and a grabbing mechanism. The equipment can solvethe problems that when existing H-shaped steel is hoisted and conveyed, the H-shaped steel cannot be clamped stably, the hidden danger of falling of the H-shaped steel in the hoisting process exists,when the H-shaped steel is conveyed to the installing position, the angle cannot be adjusted, when the H-shaped steel is conveyed, the H-shaped steel cannot be fixed in an all-directional manner, andwhen the H-shaped steel is conveyed to the installing position, the position needs to be adjusted manually.

A double-side adhesive tape adhering apparatus comprises a supporting plate, an adhesive tape feeding mechanism set, an adhesive tape adhering mechanism set and a shearing mechanism set. The adhesive tape feeding mechanism set comprises a first adhesive tape feeding mechanism and a second adhesive tape feeding mechanism; the first adhesive tape feeding mechanism comprises a first adhesive tape feeding driving part and a first adhesive tape feeding part; the first adhesive tape feeding part is provided with a first adhesive tape feeding block and a first adhesive tape pressing spring plate; the second adhesive tape feeding mechanism comprises a second adhesive tape feeding driving part and a second adhesive tape feeding part; the second adhesive tape feeding part is provided with a second adhesive tape feeding block and a second adhesive tape pressing spring plate; the adhesive tape adhering mechanism set comprises a first adhesive tape adhering mechanism and a second adhesive tape adhering mechanism; the first adhesive tape adhering mechanism comprises a first adhesive tape adhering driver and a first adhesive tape adhering block; the second adhesive tape adhering mechanism comprises a second adhesive tape adhering driver and a second adhesive tape adhering block; and the adhesive tape feeding mechanism set drives the first adhesive tape feeding part and the second adhesive tape feeding part to enable an adhesive tape to be positioned at both sides of a pole piece, the adhesive tape adhering mechanism set drives the first adhesive tape adhering block and the second adhesive tape adhering block to enable the adhesive tape to press the pole piece and the shearing mechanism set shears the adhesive tape. By the double-side adhesive tape adhering apparatus, accuracy of the adhesive tape adhering position can be improved; and the double-side adhesive tape adhering apparatus can be suitable for the pole piece with a small width. The present invention relates to a double-side adhesive tape adhering method.

A harmonic drive gear reduction mechanism includes a rigid inner spline with 2(n+1) teeth and a tooth module of m, a flexible outer spline inserted in the rigid inner spline has 2n teeth and a tooth module of m, a flexible bearing inserted in the flexible outer spline, and a wave generator inserted in the flexible bearing. A thickness between an inner diameter of the flexible bearing and a pitch diameter of the flexible outer spline is t, a cross sectional profile of the wave generator consists four curves, the first and third curves have a radius of curvature R, R=m (n+1)−t, a central angle of the first and third curves is k, and 10<k≦60, the second and fourth curves and conjunction points between the second, fourth curves and the first, third curves can be first-order differentiated.