31results about How to "Short update time" patented technology

The invention discloses an on-line fault diagnosis method of weighted extreme learning machine sewage treatment on the basis of a kernel function. The on-line fault diagnosis method comprises the following steps: 1) rejecting data with an incomplete attribute in sewage data, and then, carrying out data normalization processing to determine a historical data set and an update test set; 2) selecting a kernel function and a weighting scheme, and then, determining model parameters according to an optimal model; 3) according to the selected weighting scheme, endowing a weight for each sample of the historical data set; 4) training the model, and calculating a kernel matrix according to the kernel function; 5) adding a new sample into the model from a new test set for testing, and updating the historical data set; and 6) returning to 3), training the model again, and continuously repeating the above process until the on-line data test is finished so as to realize the identification of the on-line operation state of the sewage treatment process. The method has the advantages of short update time and high classification accuracy rate and has an important meaning for diagnosing operation faults in real time, guaranteeing the safe operation of sewage treatment works and improving the operation efficiency of the sewage treatment works.

The invention discloses an online soft measurement method for sewage treatment based on a quick relevance vector machine. The online soft measurement method sequentially comprises the following steps: estimating hyper-parameters by a quick marginal likelihood algorithm to obtain a weight value and a sample deviation value of a model; then establishing an online predication model of the quick relevance vector machine, optimizing model parameters and realizing accurate and quick measurement for BOD (Biological Oxygen Demand) in sewage. According to the measurement method disclosed by the invention, the real-time requirement can be met; an optimal predication model is established, so the prediction precision is improved, and the effect is obvious and the performances are improved; an online soft measurement model for sewage quality, established by the quick relevance vector machine, is high in prediction precision, high in generalization ability and short in updating time, and has important significance for reducing operating expenses of a sewage treatment plant, reflecting the condition of the sewage quality and realizing an automatic control system for the sewage treatment.

The invention relates to a current source device, in particular to a program-control current source. The program-control current source comprises a CPU (central processing unit) control circuit, a plurality of conversion modules and a calibrating circuit. The CPU control circuit receives data output by an upper computer, and each conversion module outputs actuating signals including control signals and data signals and comprises a D/A (digital/analog) conversion circuit and a V/I (voltage/current) conversion circuit. The D/A conversion circuits receive actuating signals output by the CPU control circuit and provides analog voltage signals for the V/I conversion circuit. The V/I conversion circuits converts the analog voltages signals and outputs analog current signals. The calibrating unit is used for sampling the analog current signals output by each V/I conversion circuit, and the CPU control circuit calibrates the analog current signals. The current source in the embodiment can provide multichannel outputs and is wide in dynamic output range and high in accuracy.

The invention provides an electrophoretic display and an image updating method thereof. The electrophoretic display comprises a panel, a line driver which comprises a decoder, a row driver, a plurality of grid scanning lines which are connected between the line driver and the panel, a plurality of source scanning lines which are connected between the row driver and the panel, and a time sequence controller which is connected with the line driver and the row driver, wherein the decoder conducts decoding according to the initial position and the end position of a local block provided by the time sequence controller to obtain a grid scanning line corresponding to the local block, wherein the grid scanning line is driven by the line driver. When an image is updated, the grid scanning line corresponding to the local block which is required to be updated is driven only, so as to shorten image updating time and reduce image updating power consumption.

The invention provides a map updating method and device and a vehicle, and the method comprises the following steps: determining the position of the vehicle after a navigation device in the vehicle isstarted, and determining a first updating region with the position of the vehicle as the center; sending a first updating request to a server, with the first updating request comprising map grid information covered by the first updating area and information of a navigation device; and if the map increment updating data of the first updating area fed back by the server is received, updating the local map data of the first updating area according to the map increment updating data of the first updating area. According to the map updating method, the map data can be locally updated in an incremental mode, the data size is small, the consumed data flow is small, national updating or provincial and municipal updating is avoided, the data updating time is short, updating is conducted only whenthe map data is used, a guarantee is provided for a vehicle-mounted navigation system to use the latest map data, and the user experience is greatly improved.

This invention relates to one device and method to realize POS machine parallel data and to output printing, wherein the device is to connect the current POS machine and print machine interface and comprises central process unit and monitor input unit, data memory unit and interface output unit through address and data bus. The said data memory unit is to imbed data memory area and mode matching memory area in operation system area. The printing order and input process module through above application layer to set and update according to printing machine and POS machine.

The invention discloses an FPGA loading method based on a ZYNQ chip. The FPGA loading method comprises the steps of power-on automatic loading during power-on starting and upper computer control loading after a ZYNQ system is started; the power-on automatic loading process is as follows: when the equipment is powered on and started, the loading mode of the FPGA is defaulted to be active loading, and at the moment, the FPGA actively reads a file from Flash2 and rapidly loads the file; the upper computer control loading process comprises the steps that after the ZYNQ system runs, a control daemon process automatically runs, a network port is monitored, and an upper computer command is responded; the upper computer establishes communication with the ZYNQ system by using a network port, a serial port and the like, and issues an FPGA code to be updated; the ZYNQ system receives the data, stores the data in a DDR3 memory, verifies the data and feeds back a verification result to the upper computer; and the ZYNQ system determines an equipment updating mode according to an instruction of the upper computer. The FPGA loading method based on the ZYNQ chip, provided by the invention, has the characteristics that the FPGA is quickly and conveniently updated, and the interruption working time of equipment is short.

The present invention discloses a method for parallel refreshing of programs of a radar array digital unit. The radar array digital unit comprises a communication port, a field-programmable gate array (FPGA) and a nonvolatile memory. The nonvolatile memory is divided into three sections: a default program area, an application program area and an electronic label area. In the default program area, a default program only can be loaded by a configuration cable and is mainly in charge of read-write operation of the nonvolatile memory through the communication port. In the application program area, an application program is loaded, and functions of the radar array digital unit are mainly implemented in the application program. In the electronic label area, specific information of each radar array digital unit is written in and read out when the default program or application program is in operation, and the information cannot be destroyed by power failure and program refreshing. When a system is powered on, the FPGA is started, enters the default program, then is automatically restarted to enter a certain application program after a short stay in the default program or is restarted to enter a certain application program after receiving a command from the communication port, and then starts to work normally.

The invention relates to an automatic heat exchange system for well water. Generally, water air conditioners, ground-source energy air conditioners, and chemical, textile and plastic industries use well water at a temperature of about 15 DEG C to prevent sunstroke and reduce temperature, and water pumps which are easy to damage and waste the electricity are used for pumping water. An investigation concludes that underground water is stored on layers because of different geological structures; moisture over 35 meters to underground has fast penetration, short update time and abundant reservesbecause of short distance to the ground surface; and lower layer well water over 100 meters is naturally penetrated for hundreds of years, generally stays in a scarce and exhausted state and even leads to ground sedimentation because of long-term excessive drawing. Therefore, Chinese government makes explicit orders to seal wells and prohibit exploitation, and carries out recharge water supplementto increase groundwater reserves. The automatic heat exchange system for the well water makes well water automatically rise and circulate to carry out heat exchange by building underground water stream channels and skillfully using siphon water stream energy of upper layer water to lower layer water, achieves double utilization of geothermy and water energy, saves electric power and also increases the groundwater reserves.

The invention discloses an online acquisition method for input active power and reactive power of an induction motor, belonging to the field of motor measurement and control. Through the manner of online calculation, the input power information of the induction motor can be better obtained in real time, so a basis is provided for operation monitoring and fault diagnosis extension research of an induction motor system. The method is implemented in a system through a software module, and no extra device needs to be added in the motor driving system, so the cost of the system is not increased. The average value of the reconstructed voltage of a current period and the reconstructed voltage of a previous switching period is used for replacing the output voltage of an inverter at an initial moment of the current period, so the phases of measured current and the reconstructed voltage are aligned; the input power of the induction motor is calculated once in each current loop period, so the real-time performance of power acquisition is improved, and updating time is short. The influence of a nonlinear part in the inverter is considered in the reconstruction of motor end voltage, so the accuracy of the reconstruction voltage is improved, and the accuracy of power estimation is further improved.

The invention discloses a method for quickly updating a noise reduction earphone feed-forward filter and a related component thereof, and the method comprises the steps: respectively obtaining a first electric signal and a second electric signal of noise received by a feed-forward microphone and an in-ear microphone, and respectively calculating a complex spectrum of Fourier transform, so as to calculate a transfer function, and obtain a first transfer function; adjusting the gain coefficient or the frequency domain response function of the feed-forward filter and recalculating the transfer function to obtain a second transfer function, and calculating a theoretical optimal filter; and comparing the built-in filters with a theoretical optimal filter, taking the built-in filter closest to the theoretical optimal filter as a preferred filter, and calculating a corresponding gain. According to the method, the transfer function in the corresponding state is obtained by changing the state of the feed-forward filter, so that the theoretical optimal filter is calculated, the optimal filter closest to the theoretical optimal filter is screened out from the built-in filters, the gain is calculated, the updating time of the whole process is short, and the obtaining speed of the optimal filter is high.

The invention relates to a network monitoring system, in particular to a data updating device of an intelligent network controller. The data updating device comprises an updated data receiving module, an updated data pairing module and an updated data feedback module, which are mounted in the intelligent network controller. The updated data receiving module is connected with a far-end data terminal via a reticle, the updated data pairing module is connected with the updated data receiving module, the updated data feedback module is connected with the updated data pairing module, and the updated data feedback module is connected with the far-end data terminal via a reticle. The data updating device of the intelligent network controller has the advantages that remote data can be updated directly via the far-end data terminal without detaching the intelligent network controller to return factory and be updated, updating time is short and updating cost is reduced.