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38 results about "Bed Status" patented technology

Engineering machinery hydraulic cylinder fault diagnosis system and fault sample signal acquisition method applicable to same

The invention relates to an engineering machinery hydraulic cylinder fault diagnosis system and a fault sample signal acquisition method applicable to the engineering machinery hydraulic cylinder fault diagnosis system. The system comprises a feature parameter extraction module, a database module, a human-computer interaction module and a classifier module, wherein the feature parameter extraction module is used for extracting fault feature parameters and checking the similarity; the database module is used for storing sample data and temporary data; the classifier module is used for designing a classifier and classifying unknown fault signals; the human-computer interaction module is used for completing related query display functions according to user input. The fault sample signal acquisition method is used for carrying out hierarchical simulation tests on fault tree bottom events on a hydraulic cylinder type test bed and acquiring fault sample signals and test bed status signals. The engineering machinery hydraulic cylinder fault diagnosis system and the fault sample signal acquisition method have the advantages that the system is high in fault diagnosis precision, fault causes and fault levels can be diagnosed, and the acquired fault sample signals have few impurities and facilitate extraction of the feature parameters.
Owner:CENT SOUTH UNIV

Enhanced compounded mix multi-stage alternate wetland sewage treating process and apparatus thereof

The invention relates to a wastewater treatment technology for manual wetland by using a reinforced compound stuffing in a multilevel shift process, which comprising the following steps: firstly, the wastewater is sent into a desilting basin unit to remove the sundries and suspended substances in the water body; secondly, the wastewater is sent into the wetland group unit to be purified and then discharged; wherein, the wetland group unit comprises a plurality of vertical current wetland units connected in series with each other and the wastewater is sent into the wetland units in sequence during the purifying treatment. When one wetland unit is in the process of purifying wastewater, the other wetland units are kept in an empty bed status. The invention has the advantages that firstly, the shift between the anoxic form and the aerobic form is realized in time and space, the denitrification capability of the wetland system is increased greatly and the problem that the bed is blocked due to the excess growth of the biomembrane on the stuffing carrier is avoided; secondly, the water quality of the effluent is favorable, the elimination efficiency of nitrogen and phosphorus is up to 95%, the effluent of the domestic wastewater treated by the technology can reaches the wastewater renovation standard; thirdly, the shock resistance loading ability of the system is high, the occupied area is small, the technology is not only suitable for domestic wastewater in urban areas, wastewater with high concentration nitrogen and phosphorus, but also applicable for lake and river water bodies which are seriously eutrophicated.
Owner:SOUTHEAST UNIV

On-bed and off-bed detection method and equipment based on flexible film resistive pressure sensor

The invention provides an on-bed and off-bed detection method and equipment based on a flexible film resistance type pressure sensor. The method comprises the following steps: performing in-bed and off-bed state detection based on third target in-bed and off-bed data ci '(t) and fourth target in-bed and off-bed data ri (t): if a first threshold value is less than the maximum value of ci' (t) and a second threshold value is less than or equal to the maximum value of ri (t) and is less than a third threshold value, judging that a to-be-detected person is in a bed and lying state within an ith time interval; if the first threshold value is smaller than or equal to the maximum value of ci '(t), and the third threshold value is smaller than or equal to the maximum value of ri (t), it is judged that the person to be detected is in a bed and side-by-side state within the ith time interval; if the maximum value of the ci '(t) is smaller than the first threshold value and the maximum value of the ri (t) is larger than or equal to the second threshold value and smaller than the third threshold value, it is judged that the person to be detected is in the off-bed state and the heavy object is in the bed in the ith time interval, and if the maximum value of the ci' (t) is smaller than the first threshold value and the maximum value of the ri (t) is smaller than the second threshold value, it is judged that the person to be detected is in the off-bed state in the ith time interval.
Owner:HENAN HANWEI ELECTRONICS
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