32results about How to "Will not affect measurement results" patented technology

The invention discloses a flame recognition system used for an aircraft engine combustor. The flame recognition system used for the aircraft engine combustor comprises a combustor body and an exhausting segment; a flame observing turning-connection segment communicated with the combustor body and the exhausting segment is connected between the combustor body and the exhausting segment; a high temperature refracting mirror with the light incoming end right opposite to the combustor body is installed in the flame observing turning-connection segment; the light outgoing end of the high temperature refracting mirror is connected with a flame image shooting system located outside the flame observing turning-connection segment; the flame image shooting system is connected with a flame image processing system and recognizing system; the flame image shooting system is used for acquiring a real-time image of the combustor body through the high temperature refracting mirror; and the flame imageprocessing system and recognizing system is used for performing real-time diagnosis on the state in the combustor body according to the real-time image. According to the lame recognition system used for the aircraft engine combustor, the state of the combustor body is diagnosed in a non-contact manner, speed is high, and the accuracy rate is high; no interference on a flow field is caused, and themeasurement result is not affected by the environment in the combustor body; and the defects of judging on igniting / flameout of a thermocouple in the combustor body are overcome.

The present disclosure discloses a multi-spectral image acquisition device. The multi-spectral image acquisition device includes: a casing, a light source, a storage board, and an image collection hole, wherein: the light source and the storage board are located in the space formed by the housing; the light source is placed in The bottom of the housing is used to generate irradiation light; the object board is placed in the middle of the housing to carry the object to be detected; the object board is provided with an irradiation hole for transmitting the irradiation light, and the object to be detected is placed above the irradiation hole so that the irradiation The light is irradiated onto the detected object; the end of the housing away from the light source is provided with an image acquisition hole for collecting the image formed after the irradiated light irradiates the detected object. The invention uses different light sources to produce different wavelengths to irradiate the detected object, and uses a multi-spectral camera to take photos of different wavelengths to obtain images of different spectra, thereby avoiding complex optical structures and reducing costs. Interference, to ensure that all light entering the camera passes through the detected object.

The invention discloses a dual-camera measurement method for precise calibration of the distance between optical marking points. A single-axis electric displacement platform is used to calibrate the relative positional relationship of the dual cameras, thereby improving the calibration accuracy and optical marking points of a binocular stereo vision system. The three-dimensional coordinate measurement accuracy is high, in order to achieve the purpose of accurate measurement of the distance between optical marking points. The method comprises the following steps: using a calibration board to calibrate the binocular stereo vision system to obtain the internal parameter matrix of the two cameras, the distortion parameter matrix, the rotation matrix and the translation vector of the second camera relative to the first camera; The displacement platform performs a known distance translation on a single optical mark point, and uses the known distance to complete the calibration of the binocular stereo vision system; using the calibrated binocular stereo vision system, according to the basic principle of binocular stereo vision, the direct reference ruler Accurately measure the distance between the two marked points.