Apparatus for remaining stabilization of image gray collected by camera
A technology of image grayscale and camera, applied in image communication, computer control, color TV parts, etc.
Active Publication Date: 2011-04-13
BAOSHAN IRON & STEEL CO LTD
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The disadvantage of this device is that the structure is complex and the cost is high, and it can only be used for a very stable LED light source, not for an unstable HID light source, and the device controls the light source based on the image quality, and does not control and trigger the camera. In addition, the device The device of the patent application can only be suitable for a closed environment with good conditions, and cannot be suitable for an industrial environment with harsh conditions
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[0035] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0036] With reference to Fig. 3, a kind of device of the present invention keeps the gray scale of the image collected by the camera stable, comprising:
[0037] Single-chip microcomputer 11, with reference to Fig. 6, this single-chip microcomputer 11 receives signal and outputs order as the control unit of device of the present invention, makes this device work, and single-chip microcomputer 11 comprises single-chip microcomputer chip U4, resistance R10, electric capacity C5, C3, C4 and crystal Composed of X1, capacitor C5 and resistor R10 constitute the reset circuit, capacitors C3, C4 and crystal X1 constitute the clock of the system, and chip U4 is the core processor of the single-chip microcomputer.
[0038]Isolating transformer 14, with reference to Fig. 4, described isolating transformer 14 input terminals are connected...
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The invention relates to an apparatus for keeping the image grayscale acquired by the camera stable, the apparatus comprises an SCM, an isolation transformer, a zero phase detector, a setting unit and a signal driver, under the control of the SCM, the zero phase detector acquires a voltage phase signal, the signal driver compares the signal with the camera triggering time-delay time set by the setting unit to drive the camera to work according to the voltage phase outputted by the zero phase detector. The apparatus can keep the voltage phase of the power supply consistent when camera acquiresthe voltage phase every time, so that during acquiring every time, the light irradiation strengths of an HID lamp are consistent, accordingly the image grayscale acquired every time can be consistent. Compared to the prior art, the apparatus can obtain the good technical effect with low cost, and is more energy-saving and environment friendly.
Description
technical field [0001] The invention relates to the technical field of an image detection system in an automatic instrument, and more specifically relates to a device for keeping the gray scale of an image collected by a camera stable. Background technique [0002] In the industrial field image detection system, the stability of the lighting environment is a prerequisite to ensure the stability of the image acquisition system. If the light intensity fluctuates, the gray scale of the collected image will also change with the light change, which will cause the image to be captured. Significant changes in the characteristics of the detected object make the calculation results of the image detection system unstable, and eventually cause the detection system to misjudge and produce serious consequences. [0003] In larger industrial site environments, such as continuous casting plants, high-pressure sodium lamps, high-pressure mercury lamps, and metal halide lamps are usually use...
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IPC IPC(8): G03B15/03G05B19/042G05F1/46H04N5/232
Inventor 方志宏夏勇
Owner BAOSHAN IRON & STEEL CO LTD