30results about How to "Resolving time delays" patented technology

The invention relates to a transformer area phase identification method based on synchronous sampling of a concentrator and an electricity meter. The concentrator is synchronized with a collector, theconcentrator and the collector do not include time delay almost, and thus, after that the concentrator issues an ordered sampling instruction to the collector, the concentrator and the collector start data collection in the same ordered sampling time point, and the accuracy of the transformer area phase identification is improved; three-phase voltage data, collected by the concentrator, of a master meter of a transformer area and voltage data, obtained by the concentrator from the collector, of the single-phase electricity meter are processed to obtain standard deviations of the voltage of the single-phase electricity meter relative to phases of voltages of the master meter of the transformer area, and the phase connected to the single-phase electricity meter is determined according to whether voltage fluctuation curves between the single-phase electricity meter and the three phases of the master meter of the transformer area are similar on the basis of the three standard deviations.The phase identification rate of the single-phase electricity meter in the transformer area can be improved.

The invention discloses an optimal attitude matching-based moving base transfer alignment time delay compensation method. The method comprises carrying out coarse alignment on an inertial navigation subsystem by navigation information of an inertial navigation main system, respectively carrying out navigation calculation by the inertial navigation main system and the inertial navigation subsystem, transmitting rate and attitude information to the inertial navigation subsystem by the inertial navigation main system, respectively acquiring strapdown matrixes of the inertial navigation main system and the inertial navigation subsystem according to the inertial navigation calculation result, simultaneously, constructing an installation angle recourse matrix of the inertial navigation subsystem, constructing observed quantity in the inertial navigation subsystem to obtain speed difference and measurement misalignment angle of the inertial navigation main system and the inertial navigation subsystem, building a strapdown inertial navigation system state equation, a system observation equation and system observed quantity, carrying out Kalman filtering iterative computation to obtain transfer alignment time delay estimated values of the inertial navigation main system and the inertial navigation subsystem, and carrying out compensation to obtain an inertial navigation subsystem attitude misalignment angle after time delay compensation. The method realizes accurate time delay estimation and compensation and has a wide use range.

The invention relates to a data access method for a memory unit, comprising the following steps of: (1) storing a plurality of commands received from a host computer into a command queue; (2) calculating the ranges of logical addresses accessed by the commands; (3) selecting a plurality of write commands from the commands, wherein the ranges of logical addresses accessed by the write commands areoverlapped; (4) merging a plurality of of write data corresponding to the write commands into a merged write datum according to the ranges of the logical addresses accessed by the write commands if aread command or a plurality of read commands are not inserted among the write commands; and (5) sending a merged write command and the merged write datum to the memory unit so as to drive the memory unit to execute the write command. The invention also relates to a memory device. The system performance is improved by the merging application of the plurality of write commands in which the ranges of the logical addresses accessed by the write commands are overlapped and the merging application of a plurality of write commands in which the ranges of logical addresses accessed by the write commands are positioned on the same page of the memory unit.

The invention discloses a zoom optical system for collecting weak optical signals. The system consists of thirteen lenses with focal lengths being positive, negative, positive, positive, negative, positive, negative, negative, positive, positive, negative, positive and positive in sequence from an object plane. The system is mainly used for effectively coupling a weak optical signal into an optical fiber, thereby facilitating data acquisition of a rear-end CCD. For an actual application scene, the system is designed as a zoom system, and the object distance ranges from 50 mm to 200 mm. In order to improve the optical fiber coupling efficiency, parameters of image points on the axis of the optical system are accurately designed, the root-mean-square diameter of the image points ranges from100 micrometers to 150 micrometers, and the divergence angle 2alpha of the image points on the axis is 30.6 degrees. Not only can optical fibers be effectively coupled, but also single-optical-fiber coupling or multi-optical-fiber-bundle coupling can be satisfied for different application scenes. The working waveband of the system covers visible light and part of near-infrared light wavebands, andvarious aberrations are well corrected.

The embodiment of the invention provides an interconnection method, system and device. The method is applied to a first main device, the first main device is a device with the highest priority in a first local region network of the interconnection system, the first local region network further comprises a plurality of sub-devices. The method comprises the following steps: obtaining a report event sent by the first sub-device, wherein the first sub-device is one of a plurality of sub-devices under the first local region network; determining a response behavior corresponding to the reported event and a second sub-device executing the response behavior according to a preset rule; and sending an execution instruction to the second sub-device, wherein the execution instruction is used for indicating the second sub-device to execute the response behavior. According to the scheme provided by the embodiment of the invention, the reported event can be quickly responded, and the problem of time delay of an interconnection system based on a wide region network is solved without reporting and responding level by level through a unified server and by means of the wide region network.

The invention provides a circuit and a method for shortening the switching dead time of network card power supply. According to the invention, a main power supply in-place state detection unit is removed, a switching control line is added, and a control source is replaced, so that time delay in a signal transmission process can be solved, and the voltage change is rapidly detected. The switching dead time is shortened and the production cost is reduced by controlling the switching-on speed of the NMOS and the PMOS during switching. In addition, the situation in which a network card leaks electricity in an S5 state when an NCSI cable is not connected is avoided by using the P3V3_ DUAL as a pull-up source of a network card chip.

An energy detection apparatus and method for detecting energy is disclosed. The energy detection apparatus and method in the present invention obtains a new energy detection value by subtracting a previously sample-averaged value from a current output energy detection value and then adding an absolute sampled value. Thus, the apparatus and method of energy detection in the present invention is capable not only of saving cost due to no demand for memories but also of providing real-time detection with no time delay.

The invention discloses a real-time man-machine interaction system in a virtual scene. The system comprises a visual attention area prediction module used for mutation detection and a behavior prediction module based on visual attention area characteristics. Wherein the visual attention area prediction module receives an input video frame sequence, carries out target information detection, smoothmotion detection and mutation information detection in sequence to obtain a visual saliency map, and carries out visual attention area extraction on the visual saliency map to obtain an attention areamap; and the behavior prediction module is used for predicting user behaviors by utilizing the characteristics after carrying out characteristics on the user visual area and the video content. According to the invention, the feedback behavior of the user after observing the video is predicted by inputting the video content observed by the user, so that the method can better operate and can cope with a smoothly changing scene in the presence of sudden changes in the scene.

The application relates to the field of sleep belt technology, and particularly relates to a sleep belt and a membrane switch. The sleep belt comprises the following components: a main controller anda sensing circuit connected thereto; a membrane switch, which comprises a first contact circuit, a second contact circuit and a middle spacer layer, and the middle spacer layer is disposed between thefirst contact circuit and the second contact circuit, the first contact circuit and the second contact circuit are connected to the sensing circuit, the middle spacer layer is provided with a throughhole and is made of an elastic material; when the sleep belt is pressed, the middle spacer layer is compressed in order to ensure contact of the first contact circuit and the second contact circuit through the through hole, and a contact signal is generated in the sensing circuit and the contact signal is transmitted to the main controller. When the user lies on the sleep belt, the main controller can quickly know that the user is lying on the sleep belt through the membrane switch; so that the sleep belt is more sensitive when sensing whether the user is on the sleep belt, the induction delay is reduced, and further the sleep band and the external device can respond in time in order to enhance the user experience.

The invention relates to a portable slope runoff water and sand collecting tank. The portable slope runoff water and sand collecting tank comprises a rain shielding plate, a beam flow plate, an anti-splash plate, a low roughness plate, a backwashing sealing plate, a lower baffle plate and a water outlet pipe. The rain shielding plate, the beam flow plate, the low roughness plate and the lower baffle plate form a closed triangular water and sand collecting tank, runoff of a runoff plot is quickly collected to the water outlet pipe, and the runoff volume and the sediment concentration are collected in real time by a sensor installed at the lower end of the water outlet pipe; and the portable slope runoff water and sand collecting tank is built at the downstream of the runoff plot, the anti-splash plate is flush with the lower edge of the runoff plot in spatial arrangement, the low roughness plate is in smooth transition with the ground of the runoff plot, and the gradient of the low roughness plate is slightly larger than that of the runoff plot. The portable slope runoff water and sand collecting tank is suitable for newly building and rebuilding a water and sand collecting device of a fixed runoff plot, and is also suitable for collecting runoff sediment in a field temporary runoff test, the accuracy of measured data of the slope runoff sediment can be improved, and the what you see is what you measure the runoff sediment in the slope runoff is achieved.

The invention provides an MES (Manufacturing Execution System) client data caching method and system under an unstable network environment. An access request of an MES client for server non-tracking information data is processed by a client data caching module; a memory data access unit of the client data caching module receives the request, and transmits the request to a memory data caching management unit for processing; the memory data caching management unit processes the request, inquires a memory data cache, returns the requested data if the memory data cache has the requested data, and transmits the request to a memory data increment query unit if the memory data cache does not have the requested data; the memory data increment query unit accesses a server and returns the received request result to the memory data caching management unit, and the memory data caching management unit adds a data increment to the memory data cache. By adopting the method and the system, the time of access of the MES client to the server non-tracking information data can be greatly reduced; and meanwhile, the method and the system can be applied to the access requirements of each level of the system client.