Abstract: The present disclosure discloses a method for positioning an auxiliary transportation vehicle in a coal mine and a positioning system thereof. The method comprises: acquiring a rotation velocity of each wheels and a rotation angle of a steering wheel, constructing a kinematics model based on wheels not for steering of the vehicle and a kinematics model based on wheels for steering of the vehicle respectively, and constructing a kinematics model based on a geometric center of the vehicle according to the above two kinematics models; and according to a travelling condition of the vehicle, integrating the kinematics model based on the geometric center with a strap-down inertial navigation system for positioning, when the vehicle is in a normal travelling state; and integrating, the kinematics model based on the wheels not for steering with the strap-down inertial navigation system for positioning, when the vehicle is in an abnormal travelling state.

Abstract: The present disclosure discloses a method for positioning an auxiliary transportation vehicle in a coal mine and a positioning system thereof. The method comprises: acquiring a rotation velocity of each wheels and a rotation angle of a steering wheel, constructing a kinematics model based on wheels not for steering of the vehicle and a kinematics model based on wheels for steering of the vehicle respectively, and constructing a kinematics model based on a geometric center of the vehicle according to the above two kinematics models; and according to a travelling condition of the vehicle, integrating the kinematics model based on the geometric center with a strap-down inertial navigation system for positioning, when the vehicle is in a normal travelling state; and integrating, the kinematics model based on the wheels not for steering with the strap-down inertial navigation system for positioning, when the vehicle is in an abnormal travelling state.

Abstract: A method is provided for controlling display of an image on a display panel of a display device, the method comprising determining a commanded brightness level for the display panel, generating an index look-up table (LUT) and a mura LUT based on the brightness level and a relationship between pixel output and pixel value for each pixel of the display panel for each of a plurality of brightness levels, the relationship determined during a calibration phase and stored in memory of the display device, determining an index value for each pixel of the display panel based on the index LUT, determining a corrected pixel value for each pixel based on the mura LUT and the index value, and sending the corrected pixel value to that pixel within the display device.

Abstract: A method is provided for controlling display of an image on a display panel of a display device, the method comprising determining a commanded brightness level for the display panel, generating an index look-up table (LUT) and a mura LUT based on the brightness level and a relationship between pixel output and pixel value for each pixel of the display panel for each of a plurality of brightness levels, the relationship determined during a calibration phase and stored in memory of the display device, determining an index value for each pixel of the display panel based on the index LUT, determining a corrected pixel value for each pixel based on the mura LUT and the index value, and sending the corrected pixel value to that pixel within the display device.

Abstract: The present disclosure discloses a low-energy-consumption grading and positioning method and system for a coal mine auxiliary transportation vehicle, which belongs to the technical field of mine tunnel transportation.

Abstract: The present disclosure discloses a low-energy-consumption grading and positioning method and system for a coal mine auxiliary transportation vehicle, which belongs to the technical field of mine tunnel transportation.