Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

43results about How to "Tolerance" patented technology

Non-contact automatic blood oxygen saturation degree measurement system and measurement method

InactiveCN103263271AOvercoming the Effects of Motion ArtifactsToleranceBlood characterising devicesPattern recognitionVideo record
The invention discloses a non-contact automatic blood oxygen saturation degree measurement system and measurement method. Measurement of a blood oxygen saturation degree is carried out through video shooting. The measurement system comprises a video collection module, a primary color component separation module, an ROI extraction module, a time-varying signal generation module, a filtering and noise reduction module and a signal calibration and analysis module. The measurement method comprises the steps: collecting a color video recording information of the wrist portion of a human body, extracting a red component image of the color video, extracting a region which includes the artery as ROI images, extracting a mean value of all pixels of each frame of ROI image as a feature value of the frame of ROI image, generating a time-amplitude waveform, conducting filtering and noise reduction on a waveform signal, conducting normalization and calibration on the filtered signal, then finding wave crests and wave troughs of the signal in a waveform period, obtaining a specific value of a wave crest value and a wave trough value, and estimating the blood oxygen saturation degree (SpO2) through the specific value. A non-contact remote physiological signal detection method is adopted, motion artifact impact in the video recording is overcome, measurement precision is high, and multiple people can be measured simultaneously.
Owner:TIANJIN DIANKANG TECH

Elevator guide rail damping device

The invention discloses an elevator guide rail damping device. The elevator guide rail damping device comprises a wall connecting frame, a guide rail support connecting cover and an elastic damping cushion installed in a box structure formed between the wall connecting frame and the guide rail support connecting cover. The guide rail support connecting cover and the wall connecting frame are screwed by a pair of first bolts and a pair of second bolts to be fixed to pre-buried nuts in the elastic damping cushion respectively, and the first bolts are perpendicular to the second bolts. A third bolt penetrates through the guide rail support connecting cover, the elastic damping cushion and the wall connecting frame and is screwed to the nut fixed to the wall connecting frame, and the head of the third bolt is provided with an elastic damping washer. The elevator guide rail damping device can absorb vibration of guide rails of an elevator in an all-around mode, and the damping effect is good. When the elastic damping cushion is aged and deform and a clearance exists between the contact face of the elastic damping cushion and the contact face of the box structure, the elastic damping washer can deform to a certain degree to fill the clearance, the serious reducing of the damping effect is avoided, the damping effect of the damping device is reliably guaranteed, and the service life of the damping device is prolonged.
Owner:深圳深日环保科技有限公司

Semi-submersible module and its assembly method for combining large-scale floating body on water

The invention provides a semi-submersible module for combining into a large-scale floating body on the water and an assembling method thereof, and belongs to the field of large-scale combination floating body structures and assembling. The semi-submersible module comprises a floating box, a vertical column, an upper platform, a floating box connection bridge, and an upper platform connection bridge, wherein the floating box is fixedly connected with the upper platform through the vertical column to form the semi-submersible module, and standard liquid cabins inside the floating box are gathered into a ballast centralized control room of the upper platform through a remote control pipeline and a remote control valve member of the vertical column. The semi-submersible module is simple in structure and easy to build, and capable of being assembled into a large-scale combination floating body on the sea. Semi-submersible modules are connected through connection bridges in a welded mode, and works of welding, coating, assembling and the like are constructed on the water. The welded connection through the connection bridges keeps structure continuity among the modules, and good structure strength is achieved. The connection bridge members are cantilever beam resembling structures, have certain flexibility and have certain error tolerance performance for building errors and method deformation errors, so that module building is facilitated and smooth assembling and welding work on the water are guaranteed.
Owner:DALIAN UNIV OF TECH

An Automatic Blood Pressure Measurement System

ActiveCN103908236BOvercoming the Effects of Motion ArtifactsToleranceEvaluation of blood vesselsSensorsWaveform analysisVideo record
The invention discloses a non-contact type automatic blood pressure measuring system. Blood pressure of a measured person is measured by video recording. The non-contact type automatic blood pressure measuring system comprises a video acquiring module, an ROI extracting module, a pulse wave signal generating module, a filtering and noise reduction module, a waveform analyzing module and a blood pressure value calculating module. An automatic blood pressure measuring method comprises the following steps of acquiring a video of a finger tip; positioning the position of a tracked finger by using contour tracing of the finger tip; acquiring images of the finger; performing primary color separation and ROI segmentation on the images of the finger; respectively taking all pixel mean values of the filtered images as feature values to generate two time-varying pulse wave signal waveforms; performing comparison analysis on the two pulse wave waveforms to obtain transmission time of pulse; calculating the wave velocity of the pulse waves along an artery according to an image center distance d; and calculating a blood pressure value by using a conversion relation between pulse wave velocity and blood pressure. By using a noninvasive and non-contact type remote physiological signal detecting method, interference of motion artifact in a video record is overcome, the measuring precision is high, and blood pressure of a plurality of persons can be measured simultaneously.
Owner:TIANJIN DIANKANG TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products