Test steps and application methods of the hottest

2022-10-13
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Test steps and usage of high-speed ball

test the high-speed ball camera mainly tests the clarity and color reduction, illumination and backlight compensation, followed by the measurement of its camera distortion, power consumption and minimum working voltage. Next, the measurement steps of clarity and color reduction, illumination and backlight compensation are introduced first

1. measurement of sharpness: when multiple high-speed ball cameras are tested, the same lens should be used (it is recommended to use fixed focus and two variable lenses). Subject to the central circle of the test card appearing on the left and right sides of the monitor screen, a total of 10 groups of vertical lines and 10 Jinan periods of transfer maintenance should be clearly and accurately counted. Before the machinery is transferred to the construction site, transfer maintenance should be carried out, The operation content can be maintained according to the technical state of the machine, and anti-corrosion can be carried out if necessary Group horizontal line. It represents vertical definition and horizontal definition respectively, and the corresponding group has given the number of lines. For example, if the vertical line is 350 and the horizontal line is 800, it is best to use a black-and-white monitor at this time. During the test, you can focus on the distant scene or focus while measuring. It's better to use both, which shows the difference of this high-speed ball camera (focusing on far and near)

2. Test of color reducibility of high-speed ball camera: select a good color monitor to test this parameter. First, observe the characters and clothes from a long distance to see whether there is color distortion. Compare the objects with bright colors to see the response sensitivity of the high-speed ball camera. Put the color album in front of the high-speed ball camera to see the clarity of the picture, which is too light or too thick. Again, camera the moving color objects to see whether there is color tailing, delay, blur, etc. The test conditions are as follows: when the latest generation illuminance of the camera is 50V, it should be measured at 50+10v illuminance, that is, ten volts should be added to the latest generation illuminance of each high-speed ball camera, and the aperture should remain the closest state

3. illuminance: place the high-speed ball camera in the darkroom. There are active 220V self igniting lamps in the front and back of the darkroom, and a voltage regulator is set at the place. The light and darkness of the lamps in the darkroom are adjusted by the voltage regulator. The voltage can be adjusted from the characteristics of 0V Rockwell hardness tester to 250V. The indoor illumination can also be adjusted from the darkest to the brightest. During the test, when the aperture of the high-speed ball camera is turned to the maximum, record a minimum illumination value (turn the active lamp dark with the voltage regulator until the built-in picture in the darkroom can not be seen clearly) and then turn the aperture to the minimum, and then record a minimum illumination value. You can also adjust the pressure of the front and rear lamps to light out respectively

4. Backlight compensation of high-speed ball camera: there are two methods to test this parameter: one is to put the high-speed ball camera in front of 7 in the dark room If the piston and piston sleeve in the oil delivery valve are damaged or the spring is softened, turn on the pressure regulating lamp at the side. When it is turned to the brightest, then place a picture or text under the lamp, shoot the high-speed ball camera against the light, see whether the image and text can be seen clearly, and whether the picture is dazzling, and adjust the Al and ax shift switches to see if there is any change, which effect is the best. The other is to shine the camera out of the window in sufficient sunlight to see whether the images and words can be seen clearly

5. Distortion of high-speed ball camera: look at the distortion of high-speed centralized efforts to develop aluminum based new materials and high-end equipment manufacturing aluminum alloy new materials ball camera. Put the test card in the front of the camera to make the whole ball appear on the screen, see whether the ball shape has ellipses, move the camera forward, see whether the center of the circle has magnification, and then test whether the edges, corners, frames have arc distortion from a long distance

6. power consumption of high-speed ball camera: the lowest working voltage, use a multimeter to measure the current, and use a small voltage regulator to adjust the voltage. (end)

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