190results about How to "High sampling rate" patented technology

An apparatus for model predictive control (“MPC”) is disclosed. A method and system also perform the functions of the apparatus. The apparatus includes a measurement module that receives battery status information from one or more sensors receiving information from a battery cell, and a Kalman filter module that uses a Kalman filter and the battery status information to provide a state estimate vector. The apparatus includes a battery model module that inputs the state estimate vector and battery status information into a battery model and calculates a battery model output, the battery model representing the battery cell, and an MPC optimization module that inputs one or more battery model outputs and an error signal in a model predictive control algorithm to calculate an optimal response. The optimal response includes a modification of the error signal.

A sigma-delta analog-to-digital converter-offers advantages such as noise shaping and high frequency operation. However, a sampling circuit needed to provide a highly oversampled discrete-time sample stream with low noise characteristics is difficult to design and implement. The present invention provides a sigma-delta mixer 300 with such a sampling circuit 310. The present invention discloses a sampling circuit using switched capacitors 307, 308, and 309 with low noise characteristics and at the same time is capable of providing a highly oversampled discrete-time sample stream.

The invention provides an integrated sampling device for underground water. The integrated sampling device comprises a sampling device main body, a piston pump and a filter, wherein the sampling device main body is used for collecting underground water, the piston pump is connected with the sampling device main body, and the filter is used for filtering underground water; a sampling bottle for sampling is connected to the filter; the piston pump comprises a pump body, a push-pull rod and a piston, and the piston is arranged in the pump body; the pump body is of a hollow structure, an inner partition hole board for dividing the inner part of the pump body into a containing cavity and a water storage cavity is arranged in the pump body, the containing cavity is used for the up-down movement of the piston, and the water storage cavity is used for storing cavity; a water inlet pipe communicated with the water storage cavity is arranged on the pump body and is connected with the sampling device main body; and the lower end of the push-pull rod is connected with the piston through a penetration hole formed in the pump body. The integrated sampling device for underground water has the beneficial effects that the application range is extended, particularly for the middle-low permeability water-bearing layers, the well drilling cost and the power cost of a high-power pump are lowered, the pretreatment processes are integrated, the operation is convenient and efficient, and the properties of water sample are preserved.

A vibration correction device in an imaging device includes a micromirror array lens, configured to focus an object image onto an image sensor, and a vibration determination device, communicatively coupled to the micromirror array lens, configured to determine vibration of the imaging device and to generate a vibration correction signal. The micromirror array lens is adjusted to change its optical axis based at least in part on the vibration correction signal to correct for the vibration of the micromirror array lens. In one aspect, the micromirror array lens includes a plurality of micromirrors and the optical axis is changed by translation and/or rotation of the plurality of micromirrors. The advantages of the present invention include elimination of need for mechanical macromotions to adjust the optical axis, high sampling rate, simple structure, and flexibility to use any type of vibration determination device.

The invention discloses a method and device for measuring the frequencies of high-frequency cosine signals under the undersampling rate, and relates to the field of digital signal processing. By combining the type of the zero crossing point with the distribution characteristic of apFFT phase spectrums, L spectrum position index values are selected from 2L peak value magnitude spectrum positions; according to the remainder selecting result, each apFFT phase spectrum is corrected through the all-phase ratio interpolation method so that the frequency of the apFFT phase spectrum can be estimated; the frequency estimation value obtained after each apFFT phase spectrum is corrected is used as a remainder, the remainders are processed according to the Chinese remainder theorem of the closed analysis form, and the frequencies of the original high-frequency signals are reconstituted through the frequency estimation values. According to the method and the device, the frequencies of the multiple paths of high-frequency cosine signals under the undersampling rate are measured, and the measuring range of the frequencies of the high-frequency signals is greatly widened; the novel spectrum correction method is adopted, and therefore the measuring accuracy of the frequencies of the high-frequency cosine signals is improved, and novel anti-noise performance of the high-frequency cosine signals under the low undersampling rate is ensured.

An optical module conversion device based on modulator multichannel demultiplexing comprises a high-rate pulsed laser, a photon sampling gate, a multichannel demultiplexing module, a radio frequency frequency-synthesizing module, a parallelized photoelectric conversion module, a parallelized electrical sampling module and a data processing unit. The multi-channel demultiplexing is realized by using the optical switch effect of the modulator, and the high-speed optical sampling pulse is demultiplexed by the cascading modulator step by step. Finally, the parallelized photoelectric conversion, electrical sampling and data processing are utilized in a compound mode to realize the acquisition of the sampled signal. The device plays a critical role in improving the performance of microwave photon systems which require high sampling rate, high time precision and high sampling precision, wherein the microwave photonic systems comprise microwave photon radars, optical communication systems and the like.

An apparatus and method of recognizing a position and direction of a mobile robot includes obtaining absolute coordinates at a current position of the mobile robot and relative coordinates for a moving displacement of the mobile robot. Therefore, the position and direction of the mobile robot are recognized by reflecting the relative coordinates on the absolute coordinates. Accordingly, the present invention operates odometry and RFID coordinate systems in combination with each other, thus obtaining a high sampling rate by the odometry coordinate system while restricting an error range within a predetermined level by the RFID coordinate system.

A method and application that utilizes a signal processing algorithm is provided for detecting plug-in electric vehicle charging events through interrogation of smart meter data. The method is a form of non-invasive load monitoring that allows the utility to track plug-in electric vehicle charging events in real time or over extended periods. These parameters are suitably flexible so as to accommodate diverse electric vehicle technologies and a range of electric vehicle owners' charging habits. Application of the method facilitates the integration of electric vehicles into utilities' electrical grids, protection of the utilities' assets, geographic mapping of electric vehicle owners and charging events, managed charging through communication between the utility and the vehicle or owner, managed charging through the offer of time of use rates for electric vehicle owners, and an enabling technology to accompany other Smart Grid functions such as Vehicle-to-Grid distributed energy storage.

Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disk (200) carries an encrypted digital video title combined with data processing operations (225) that implement the titles security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations (225), access secure non-volatile storage, submit data to CODECs for output (250), and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies. If pirates compromise a player or title, future content can be mastered with security features that, for example, block the attack, revoke pirated media, or use native code to correct player vulnerabilities.

The invention discloses a micro-flushing groundwater automatic sampling system. Groundwater is pumped in a micro-flushing mode by using a preset groundwater pumping strategy, real time acquisition and quality index analysis are carried out on the pumped groundwater to automatically and intelligently determine the micro-flushing process and optimize the pumping speed of the groundwater in order to obtain stable water quality indexes within a shortest time and to obtain an aquifer representative water sample by beginning the water sample acquisition at a most reasonable time, so the problems of labor waste, slow sampling speed and no representative water sample obtaining caused by the adjustment of the pumping speed of the groundwater and the determination of the water quality index stability time point in a manual mode are solved, and the problem of data processing inaccuracy caused by large error of data after-processing due to wrong manual recording is avoided. The real time acquisition and water quality index analysis of the pumped groundwater are carried out to realize corresponding water quality monitoring and predicating functions.

The invention discloses a seabed landslide monitoring device and method based on an MEMS sensor, and belongs to the technical field of seabed monitoring. A monitoring unit consists of a plurality of monitoring subunits which are connected in series. The monitoring unit is placed in a protection cover. The monitoring unit enables a monitored signal to be transmitted to a processing unit. The processing unit enables the processed signal to be transmitted to a computer terminal. A power module supplies a working voltage to a data processor. The MEMS sensor is fixed in a long pipe through a damping piece. One end of the long pipe is connected with one end of a soft connection pipe. The power module is connected with the MEMS sensor, and supplies the working voltage to the MEMS sensor. The MEMS sensor is connected with a data input port of the data processor. The data processor enables the processed data to be transmitted to the computer terminal. The device and method can achieve the monitoring and data recording of the changes of multiple layers of a seabed, achieves the monitoring of a single point to a plurality of points so as to form a three-dimensional monitoring plane, provides visual data for the research of the changes of the stratum of the seabed, and provide information support for the early-warning services of the seabed landslide.

The invention discloses an MIMO radar detection method based on double optical frequency combs and difference frequency multiplexing. According to the method, an existing MIMO radar detection technology based on microwave photon orthogonal difference frequency multiplexing is improved, and M paths of modulated optical signals of a transmitting end are generated through the following method: firstly, an optical carrier is divided into an upper path and a lower path; The local oscillator signal is used for carrying out modulation processing on the uplink optical carrier wave to generate a firstoptical frequency comb signal, and the intermediate frequency signal and the intermediate frequency linear frequency modulation signal are used for carrying out modulation processing on the next optical carrier wave to generate a second optical frequency comb signal; After the first optical frequency comb signal and the second optical frequency comb signal are coupled into one path, the first optical frequency comb signal and the second optical frequency comb signal are divided into M paths of modulated optical signals respectively consisting of a single intermediate frequency linear frequencymodulation spectrum line and a single local oscillator signal spectrum line through beam shaping filtering. The invention also discloses an MIMO radar detection device based on the double optical frequency combs and the difference frequency multiplexing. According to the invention, the structure of the transmitter can be greatly simplified, the implementation cost of the system is reduced, and the coherence between signals can be effectively ensured.

The invention discloses a water-locking type unconsolidated formation sampling drilling tool. The drilling tool comprises a drill bit, an external cylinder, a coring tube, a piston, a bin base and a plugging switch, wherein the drill bit is connected to the lower end of the external cylinder; the coring tube is arranged in the external cylinder; the piston is arranged in the coring tube; the upper part of the coring tube is connected with the bin base which is connected with the coring tube in a sealed mode; a through hole which is connected with the coring tube is formed in the bottom surface of the bin base; the plugging switch is arranged in the through hole; and a water hole is formed in the wall of the bin base. The water-locking type unconsolidated formation sampling drilling tool has a simple structure, can efficiently sample unconsolidated and broken formations such as sandy soil layers, soil layers, gravel-containing layers and the like in a high-quality way, has a high sampling rate, particularly can preserve the sequence state of the formations well, and is suitable for environmental sampling, geotechnical investigation and surveying sampling and the like of the unconsolidated and broken formations and the like, and the obtained samples are undisturbed and are high in fidelity.

The invention relates to an analog-to-digital joint type data acquisition device, belonging to the technical field of data acquisition. The device of the invention comprises a first-stage analog amplifying and conditioning circuit, a parallel multiplex analog amplifying and conditioning circuit, an AD sampling module and a digital control module, wherein the parallel multiplex analog amplifying and conditioning circuit comprises an N-way amplifying and conditioning circuit formed by connecting two operational amplifiers in series; the output end of the first-stage analog amplifying and conditioning circuit is connected with N input ends of the parallel multiplex analog amplifying and conditioning circuit; N output ends of the parallel multiplex analog amplifying and conditioning circuit are respectively connected with N analog input ends of the AD sampling module; and the AD sampling module is connected with the digital control module through a control port. The acquisition device canintellectually realize automatic switchover of a measuring range according to the size of analog input signals, ensures the sampling accuracy, enlarges the dynamic range, does not need extra time forautomatic switchover of the measuring range, improves the sampling rate, and ensures the band width of a system.

This invention relates to an one-way impact strength test device used in testing the impact strength of vertical falling of an analog head to the ground including a falling frame of the analog head, an optical control switch set on the falling frame of the head, an acceleration sensor and a shading baffle set on the head and a test host, in which, when said shading baffle passes through the optical control switch, it triggers the switch and generates twice interrupt signals, the acceleration sensor tests the acceleration of the head when impacting the ground and transmits it to the host, which samples and keeps acceleration data and computes the peak value of the acceleration and the HIC value and times the time difference of the two interrupt signals to compute the falling height value of the analog head and store and display the data.

The invention provides a lightning-stroke special digital storage oscilloscope (DSO) and a measuring method thereof. The lightning-stroke special DSO comprises: a signal conditioning and trigger signal generation circuit, a temporal distribution circuit, a sampling hold circuit, an ADC single chip microcomputer circuit, a master-control single chip microcomputer circuit, a power supply circuit, a display interface unit and a computer-communication serial port. The signal conditioning and trigger signal generation circuit, the sampling hold circuit and the ADC single chip microcomputer circuit are successively connected. The temporal distribution circuit is respectively connected with sampling hold circuit and the ADC single chip microcomputer circuit. The master-control single chip microcomputer circuit is respectively connected with the signal conditioning and trigger signal generation circuit, the ADC single chip microcomputer circuit and the power supply circuit. The computer-communication serial port is connected with the master-control single chip microcomputer circuit. The signal conditioning and trigger signal generation circuit is connected with a signal terminal of an external lightning stroke current signal input socket. The display interface unit is connected with the master-control single chip microcomputer circuit and is externally connected with a display. By using the lightning-stroke special DSO, a special requirement of collecting lightning stroke current waveforms can be satisfied.

This invention relates to multi-load communication system, which comprises one multi-load wave signals generation device and one multi-load peak remove device, wherein, the peak remove device is to reduce peak proportion of the multi-load signals generated by the device; the multi-load signals generation device comprises several single load wave signal generation module and sum module; the said remove device comprises hard limit range device, sum device, match filter parameter generation device and match filter process device.

The invention discloses gas production negative-pressure equipment and a gas detection system. The gas production negative-pressure equipment comprises a controller, a solenoid valve array and a vacuum pump, wherein the controller is used for generating a control signal for controlling the solenoid valve array according to a received electric signal; the solenoid valve array is respectively connected with the controller and the vacuum pump and is used for switching on different solenoid valve sets according to the control signal to realize the control on the flow of the vacuum pump. With the adoption of the gas production negative-pressure equipment provided by the embodiment of the invention, the technical problems in the prior art that gas production of a gas detector can not be controlled so that the sampling speed is low can be solved, so that the technical effect of improving the sampling speed is realized.

The invention provides a method for generating a time-limited and bandpass prolate spheroidal wave function signal based on reconstruction filtering. The time-limited and bandpass prolate spheroidal wave function signal can be generated according to a small discrete sampling value through the reconstruction filtering; and compared with the conventional method, the method can reduce the requirement on hardware memory sources, does not require bandpass filtering and is easy for engineering implementation. The method for generating the time-limited and bandpass prolate spheroidal wave function signal comprises the following steps of: determining needed sampling points through a bandpass sampling theorem; solving needed sampling values through a numerical solving algorithm; improving a signal sampling rate by more than two times of a signal maximum frequency through the reconstruction filtering; and generating continuous analog signal waveform through digital-to-analogue conversion and lowpass filtering. The method for generating the time-limited and bandpass prolate spheroidal wave function signal provided by the invention is suitable for generating the time-limited and bandpass prolate spheroidal wave function signal with a large relative bandwidth or a small relative bandwidth, and particularly suitable for generating the time-limited and bandpass prolate spheroidal wave function signal with the small relative bandwidth.