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3358 results about "Sensing data" patented technology

Satellite-borne remote sensor radiation calibration method based on atmospheric parameter remote sensing retrieval

The invention discloses a satellite-borne remote sensor radiation calibration method based on atmospheric parameter remote sensing retrieval. The method includes nine steps. A surface reflectance is obtained through ground synchronous actual measurement during satellite crossing or historical data, imaging time and observation geometry parameters are obtained through remote sensing data head files, atmospheric parameters during imaging of synchronous crossing meteorological satellite sensors or related load retrieval remote sensors are utilized, the entrance pupil radiance of the remote sensors is calculated by an atmospheric radiation transmission model according to retrieval results of the atmospheric parameters, a calibration coefficient is calculated through a radiation calibration model, and thereby the on-orbit radiation calibration for a satellite-borne remote sensor is achieved. The satellite-borne remote sensor radiation calibration method based on the atmospheric parameter remote sensing retrieval is a pixel-level calibration method and has the advantages that the accuracy is high, the costs are low, simultaneously, the high frequency calibration can be achieved, historical remote sensing data can be calibrated, and the method has a wide application prospect to remote sensing data processing methods and application technical fields.
Owner:BEIHANG UNIV

Non-volatile semiconductor memory device

A non-volatile semiconductor memory device includes a memory cell array in which electrically erasable and programmable memory cells are arrayed, each of the memory cells storing therein a first logic state with a threshold voltage lower than or equal to a first value or a second logic state with a threshold voltage higher than or equal to a second value that is higher than the first value, a data hold circuit for holding program data and sensing data as read out of the memory cell array, and a controller configured to control a program sequence, wherein the controller has the control functions of: a program control function for applying a program voltage to a selected memory cell of the memory cell array to let the data shift from the first logic state to the second logic state; a program verify control function for verifying that the programmed data of the selected memory cell shifted to the second logic state; an erratic program verify control function for checking that the threshold voltage of a memory cell to be held in the first logic state does not exceed a third value set as an upper limit value of a variation of the first logic state; and an over-program verify control function for checking that the threshold voltage of the selected memory cell shifted to the second logic state does not exceed a fourth value set as an upper limit thereof.
Owner:KK TOSHIBA

Remote electrical safety diagnosis system and apparatus

ActiveUS20120185185A1Problem is complicatedPreventing electricity safety accidentWired architecture usageFault locationWater leakageInformation networks
The present invention relates to an electrical safety diagnosis system and apparatus, which are configured to enable sensed data on user surroundings in a U-city environment, such as electrical safety data for switchboards and distribution boards, and water leakages, faulty outlet connections, etc., to be managed remotely by a server at a U-city integrated information center. In particular, the present invention relates to an electrical safety diagnosis system and apparatus which use a U-city integrated information network to preemptively perform checking and analyses for potential electrically-induced disasters that can occur in public facilities, stores, buildings, and homes within a U-city, by means of a U-city integrated information center, and prevent electrical fires or shocks at the electrical equipment of switchboards or distribution boards, and dangerous conditions (such as water leakages, abnormal temperatures, gas, and faulty outlet connections) in facilities used by users. The remote electrical safety diagnosis system of the present invention comprises: a digital switchboard including the functions of checking electrical equipment in a switchboard room using a contactless arc sensor and a partial discharge sensor on a power line, to diagnose the safety of the electrical equipment, diagnosing an arc or partial discharge in a detected waveform and storing the diagnosed data, and transmitting the diagnosed data to a higher level server; and a digital distribution board including a main circuit breaker and a partial circuit breaker, for checking an AC voltage or current input through the power line, storing the checked data, and transmitting the diagnosed data to the higher level server.
Owner:KOREA ELECTRICAL SAFETY CORP

Data verification method based on block chains and data verification system thereof

The invention discloses a data verification method based on block chains and a data verification system thereof. The data verification method comprises the steps that the sensing data of the environment and/or household equipment state are acquired through multiple wireless sensor nodes of a wireless sensor network and processed and then uploaded to a data repeater; the data repeater receives the processed sensing data and then forwards the sensing data to a data verification network; multiple data verification nodes in the data verification network are responsible for verifying and saving the sensing data; and all the data verification nodes are block chain nodes, and multiple data verification nodes form a distributed database. The data verification task is completed by using the data verification nodes, and the verification work is distributed to the verification nodes from the data repeater so that the problems of being low in verification efficiency, low in speed, high in transmission delay and vulnerable because of the excessively centralized verification task can be overcome, and the nodes are excited to actively authenticate the data and rapidly complete the verification task so that the whole verification system is not influenced by single node failure of any node.
Owner:GUANGDONG UNIV OF TECH
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