48 results about "Energy statistics" patented technology

The invention discloses an energy automatic management and scheduling system. The energy management and scheduling system comprises four hierarchies from top to bottom, namely an application management system layer, an application support platform layer, a data service platform layer and an infrastructure layer. The energy automatic management and scheduling system realizes the real-time acquisition of field data through the unified acquisition and the integrated management of production control system data and various important monitoring instruments. Through the network transmission, the collected data are stored in a real-time database to be processed. Therefore, the actual production condition can be exactly mastered in an office or remotely by people and related leaders in scheduling and production management departments in the modes of flow chart monitoring, alarming, real-time reporting, trend searching and the like. Meanwhile, MES modules, including production monitoring, safety management, production scheduling, quality management, production statistics, equipment management, energy management, energy statistics and analysis and the like, is combined with a short message platform, so that a convenient and quick informatization management platform is provided for the production management and the scheduling command of a full company.

The invention discloses a double-threshold energy detection method based on history sensing information. According to the method, probabilities that states of occupying a licensed band by a licensed user are changed or not in adjacent sensing frames are estimated through an energy detection method; a high threshold and a low threshold satisfying constraint of a target false alarm probability are set according to a theoretical value of a false alarm probability and the probabilities; spectrum detection is carried out; and when an energy statistic value of a current sensing frame is greater than the high threshold, it is judged that the licensed user occupies the licensed band in the current sensing frame, otherwise, secondary judgment is carried out on the state of occupying the licensed band by the licensed user through utilization of the energy statistic values of the current sensing frame and a history sensing frame according to the high threshold and the low threshold. The method has the advantages that the constraint of the target false alarm probability is satisfied, a relatively high detection probability is obtained, the spectrum detection performance is improved, moreover, the complexity is low, the detection timeliness is relatively good, and the occupied system bandwidth is low.

The invention relates to a method for signal detection in a short-range wireless network. The method comprises the following steps: firstly, receiving a radio-frequency signal transmitted by a transmitting terminal in the short-range wireless network, and carrying out down-conversion to obtain a baseband sample receiving signal; beginning to read a receiving signal of one code element cycle length from a random sampling point; multiplying every sampling point in the receiving signal by the adjacent sampling point of the last moment after conjugating operation is carried out on every sampling point in the receiving signal to obtain a group of correlation value sequences; summing up all the correlation values in the correlation value sequences to obtain a decision value; calculating an energy statistic value in the receiving signal; calculating the ratio of the decision value to the total energy statistic value and comparing a proportional value with a threshold so as to judge whether the signal is detected or not; and calculating the phase of the decision value after the signal is detected, and utilizing the phase to obtain a frequency estimation value. The method has the advantages of only needing the receiving signal of one code element cycle, reducing the requirement on the data amount of the receiving signal, reducing the calculation amount and the calculation complexity, increasing the real-time property of the realization of the system and enhancing the range of frequency estimation.

The invention discloses an automatic ocean acoustic propagation survey explosive wave intercepting method based on a model. The method includes the steps of throwing an explosive sound source for a transmission ship according to the measuring line underway, receiving the acoustic propagation measurement experiment configuration of signals at a fixed point through a perpendicular receiving array, conducting high-pass filtering on received data before processing according to the frequency spectrum characteristics of noise and explosive waves, forecasting acoustic propagation loss values of different transmitting-receiving array distances through the model, estimating the energy values of explosive wave signals received in positions of different transmitting-receiving array distances in experiments through the combination with explosive wave sample energy statistic values actually received in near-distance positions, designing detection thresholds changing according to the transmitting-receiving array distance changes, making the thresholds of the positions close to a transmitting-receiving array high and the thresholds of the positions away from the transmitting-receiving array low, and lowering the false alarm probability as much as possible under the condition that the detection probability is ensured. By means of the method, explosive waves can be effectively and automatically intercepted, and the method has important significance in automatically processing acoustic propagation measurement experiment data and lowering the manual intervention.

The invention provides an earth surface consistency amplitude compensation method based on overlaid reflection wave energy statistics. An earth surface consistency amplitude compensation factor is acquired through iteration by using reflection wave energy statistics after multiple domains such as common shot, common receiver, common offset and the like are overlaid, influences imposed on the amplitude by earth surface inconstant factors under conditions of a low signal to noise ratio and a complex earth surface can be effectively eliminated by applying the earth surface consistency amplitude compensation factor to prestack seismic record. The method provided by the invention is easy to implement, reliable and strong in adaptability.

The invention provides a submarine sound signal noise reduction method. The method comprises steps that firstly, a submarine sound signal is inputted to decompose into multiple modal components; secondly, the multiple modal components acquired through decomposition are transformed to a frequency domain for processing; thirdly, a threshold function is set according to noise distribution characteristics of the submarine sound signal to filter noise; fourthly, the multiple modal components after processing are transformed to a time domain; and lastly, reconstruction of the submarine sound signal after noise reduction is carried out. The method is advantaged in that compared with a method in the prior art, noise is effectively eliminated, through decomposing the submarine sound signal into a series of modal components, identification of noise in the modal components is facilitated, and subsequent processing is convenient; compared with a common spectral subtraction method, the method has an advantage in processing non-stable signals, the physical meaning of the signal itself can be better presented, moreover, through designing the threshold function, the modal components are transformed to the frequency domain to carry out filtering processing, and energy statistic characteristics of the noise and the signal are fully utilized; compared with a common wavelet noise reduction method, the method has higher noise reduction performance.

The invention discloses a doubly-fed induction generator slip ring breakdown diagnosis method based on vibration. The method includes the following steps: adopting a Nico data acquisition instrument, a DC voltage source, and a PC signal processing machine to establish a vibration signal acquisition system structure; sampling a slip ring surface slip ring vibration signal; according to the wavelet packet decomposition, conducting 4-tier wavelet packet decomposition on the acquired vibration signal to obtain 16 sub-frequency bands; using the method based on wavelet power spectrum, conducting energy statistics analysis on the energy of the vibration signal at different frequency bands after the vibration signal is subject to wavelet packet decomposition; on the basis of the energy-intensive frequency band, determining that an armature slip ring is at which of the following four working conditions, normal operation, slip ring surface entirety scratch-type injury breakdown, slip ring surface local superficial injury breakdown and slip ring surface loop circular degree injury breakdown. The method can realize real-time online monitoring of the operation state of the slip ring, has a vibration signal which is very sensitive to breakdowns, has wide engineering practicality and is easy to promote.

The present invention provides a collection method detector arrangement length quantitative analysis method based on energy statistics. The method comprises the steps of: selecting an exploration target stratum, and arranging seismic source points and receiver points; performing downward propagation and prolongation of wave field energy from positions of the seismic source points, performing reflection of the wave field energy through the target stratum, forming a second seismic source, taking energy of the target stratum at this moment as an energy value of the second seismic source to perform back propagation and prolongation to the earth's surface, recording energy values received by the receiver points, and marking the energy values as energy values of shot-to-receiver pairs; obtainingone energy value of each shot-to-receiver pair, drawing a shot-to-receiver pair energy value map, taking a diagonal line of the map as a zero-offset line, and obtaining a reference line being parallel to the zero-offset line according to the distribution range of the shot-to-receiver pair energy values, wherein values of points of intersection of the reference line and the receiver point lines are reasonable detector arrangement length for the current target stratum. The method provided by the invention can achieve quantitative evaluation of the detector arrangement length so as to optimize acollection observation system, save the construction cost and improve the collection data quality.

The invention provides a high-energy-efficiency spectrum sensing method based on a support vector machine (SVM). Firstly, energy statistics amounts of a main user signal and a noise are calculated, energy vectors are obtained, and then residual vectors of the main user signal and the noise are obtained; secondly, an SVM classification model is trained offline by utilizing an eigenvector, and Gaussian kernel parameters are optimized on the basis of simulated annealing; and finally, characteristic expressions of received signals are calculated, classification is carried out by using the SVM classification model, and whether the signals include a main user or not is judged so as to judge a frequency spectrum state.

The invention discloses a vibrating rod working state determination method based on noise signal analysis. The method comprises steps of 1, performing noise signal collection, wherein noise signals are timely collected via a pickup when a vibrating rod works; 2, performing time frequency transformation, wherein the collected noise signals are transformed into other frequency spectrums via FFT (Fast Fourier Transform); 3, selecting three feature frequency points in the obtained frequency spectrums via transformation, and performing energy statistics of the three feature points; and 4, obtaining the working state of the vibrating rod through a percentage threshold values and an energy statistics result. The invention can timely and effectively determine the working state of the vibrating rod, and provides an effective visualized guidance index for concrete construction.

The invention specifically relates to a method for data exception judgment and repairing on the basis of energy statistics. The method comprises a judgment process and a repairing process. The judgment process comprises the following steps that: according to whether the original data aN of a current particle size is obtained or not, judging whether the particle size N is collected data which needsto be repaired or not; according to whether the adjacent particle size statistical value N of the particle size N is smaller than 0 or not, judging whether the particle size N is collection data which suddenly becomes small and needs to be repaired; according to whether the adjacent particle size statistical value N of the particle size N is that value N is greater than or equal to k*A or not, judging whether the collection data suddenly becomes big and needs to be repaired or not. The repairing process comprises the following steps that: directly adding a historical average value, and if data which is collected subsequently is recovered to an original base number, repairing is carried out according to a ratio of adjacent particle size statistical values. By use of the method, original collection data exception caused by equipment problems in an energy related management system can be intelligently judged, and in addition, the statistics data of an exceptional scene is repaired.

The invention relates to a Wi-Fi conversion socket with over-current protection and energy statistics. The Wi-Fi conversion socket comprises a power supply plug, a power supply socket, a power supply module, a microcontroller, a Wi-Fi module, a voltage detection module, a current detection module, an electric quantity chip and an on-off control circuit, wherein the microcontroller, the Wi-Fi module and the electric quantity chip are respectively connected with the power supply module, the current detection module and the voltage detection module are connected with the electric quantity chip, and the electric quantity chip, the Wi-Fi module and the on-off control circuit are respectively connected with the microcontroller. The invention further relates to an intelligent household appliance control system. The intelligent household appliance control system comprises the Wi-Fi conversion socket, an intelligent household appliance, a wireless router, a remote server and a mobile control terminal. The Wi-Fi conversion socket not only has a function of supplying the household appliance with power, but also has an over-current protection function and energy calculation and statistics functions. Through applying the intelligent household appliance control system, the intelligent household appliance can be remotely controlled, and all-around protection and energy statistics analysis are carried out on the intelligent household appliance.

The invention relates to a method for the real-time sense of a carrier signal in a short-range wireless network. The method comprises the following steps: firstly, receiving a radio-frequency signal transmitted by a transmitting terminal in the short-range wireless network, and carrying out down-conversion to obtain a baseband sample receiving signal; beginning to read a receiving signal of one code element cycle length from a random sampling point in the receiving signal; multiplying every sampling point in the receiving signal by the adjacent sampling point of the last moment after conjugating operation is carried out on every sampling point in the receiving signal to obtain a group of correlation value sequences; carrying out statistical operation on the correlation value sequences, and taking the obtained statistic value as a decision value; summing up the squared values of the magnitudes of all the sampling points in the receiving signal after calculating to obtain an energy statistic value of the receiving signal; and calculating the ratio of the decision value to the total energy statistic value and comparing a proportional value with a threshold so as to judge the channel state. The method has the advantages of not needing synchronization of time and the carrier, reducing the calculation amount and the complexity, increasing the real-time property of the realization of the system and enhancing the robustness of the algorithm to the system environment.

The invention discloses an energy statistical method capable of configuring a tree structure. The method comprises the following steps: a, constructing an energy consumption unit statistical tree based on a hierarchical relationship of energy statistical units; b, constructing an energy pedigree tree factory model based on the distribution condition of the energy statistical instruments; c, configuring a matching relationship between the energy consumption unit statistical tree and the energy pedigree tree factory model; and d, collecting measurement data of all energy statistical instruments in the energy pedigree tree factory model, and counting energy consumption data of each level or nodes of the level in the energy consumption unit statistical tree according to the matching relationship in the step c. According to the invention, a configurable solution is provided for a user according to a changing factory environment, and the cost of secondary investment is reduced.