In the modern industrial automation production, it involves a variety of inspection, measurement and part identification work. Its common feature is continuous mass production, the appearance quality requirements are very high, usually this highly repetitive work can only rely on Manual detection to complete. In the production line, precise measurement, shape matching, and color identification of minute dimensions are performed. Due to the high-speed movement of the observed object, the human eye cannot observe and test continuously and stably, and is prone to errors. The stroboscope observation technology can solve this problem well.
A stroboscope, also known as a stroboscopic still or tachometer, is an optical measuring device capable of turning a vibrating, high-speed rotating or cyclically moving member into a "stationary" member.
The stroboscope itself can emit short and frequent flashes. When the flashing frequency of the strobe light is adjusted so that it is close to or synchronized with the rotation or movement speed of the object to be measured, although the object to be measured moves at a high speed, it seems to be It is slow motion or relatively static. This kind of persistence of vision makes it possible to easily observe the surface quality and operating conditions of high-speed moving objects by visual observation. The flash rate of the stroboscope is the rotational speed of the detected object (eg, motor). Motion frequency (print bag) can also be used to analyze vibrations of objects, high-speed moving objects, and high-speed photography. The use of stroboscope observation inspection technology has been widely used in Europe and the United States. With the rapid development of China's economy, more and more industries have begun to use stroboscopes to help solve product quality inspection problems. Stroboscope composition and working principle:
The operating principle of the strobe light is to control the flashing frequency of the flash according to the set frequency or according to the external trigger frequency, as a complete system including a man-machine display interface, adjustment and function selection keys, a flash control module, a flash power supply module and Trigger automatic tracking module. The working principle of the stroboscope,
In the stroboscope system design, LED digital tube is used as human-machine display interface. The LED display has features such as high brightness, long life, and easy control. As long as the reliability of the drive circuit is ensured, the long-term stability of the human-machine interface can be guaranteed. For parameter setting or function selection, high-reliability Omron touch buttons and rotary encoders with fast adjustment functions are used as data input elements, and reasonable software is used to increase the speed and convenience of parameter setting. As a more convenient product, it must have the function of parameter saving. Non-volatile memory, storage frequency, working mode and other parameters are used here.
In order to achieve the effects of convenient use, stable performance and precise control, the design of the entire software system is very important. In addition, there is a core and difficult technology in the strobe light control system, which is to ensure that the power supply voltage of the flash is stable. Only by ensuring the stability of the voltage can the brightness of the lamp flicker be consistent, so that the flash will not be subject to flashover under high frequency conditions. Because the power consumed by the lamp flashing at different frequency bands is variable, it is difficult to control. When the strobe light is used as a light source for a print quality inspection, a higher requirement is also put forward for the performance of the strobe light. The time that the strobe light flashes after receiving the trigger signal must be the same, so program control and circuit design become more important. Figure 3 is a software system main program flow chart. The three flowcharts illustrate the working mode of the entire software system, and realize the stroboscopic and automatic frequency tracking function of the stroboscope.
A stroboscope, also known as a stroboscopic still or tachometer, is an optical measuring device capable of turning a vibrating, high-speed rotating or cyclically moving member into a "stationary" member.
The stroboscope itself can emit short and frequent flashes. When the flashing frequency of the strobe light is adjusted so that it is close to or synchronized with the rotation or movement speed of the object to be measured, although the object to be measured moves at a high speed, it seems to be It is slow motion or relatively static. This kind of persistence of vision makes it possible to easily observe the surface quality and operating conditions of high-speed moving objects by visual observation. The flash rate of the stroboscope is the rotational speed of the detected object (eg, motor). Motion frequency (print bag) can also be used to analyze vibrations of objects, high-speed moving objects, and high-speed photography. The use of stroboscope observation inspection technology has been widely used in Europe and the United States. With the rapid development of China's economy, more and more industries have begun to use stroboscopes to help solve product quality inspection problems. Stroboscope composition and working principle:
The operating principle of the strobe light is to control the flashing frequency of the flash according to the set frequency or according to the external trigger frequency, as a complete system including a man-machine display interface, adjustment and function selection keys, a flash control module, a flash power supply module and Trigger automatic tracking module. The working principle of the stroboscope,
In the stroboscope system design, LED digital tube is used as human-machine display interface. The LED display has features such as high brightness, long life, and easy control. As long as the reliability of the drive circuit is ensured, the long-term stability of the human-machine interface can be guaranteed. For parameter setting or function selection, high-reliability Omron touch buttons and rotary encoders with fast adjustment functions are used as data input elements, and reasonable software is used to increase the speed and convenience of parameter setting. As a more convenient product, it must have the function of parameter saving. Non-volatile memory, storage frequency, working mode and other parameters are used here.
In order to achieve the effects of convenient use, stable performance and precise control, the design of the entire software system is very important. In addition, there is a core and difficult technology in the strobe light control system, which is to ensure that the power supply voltage of the flash is stable. Only by ensuring the stability of the voltage can the brightness of the lamp flicker be consistent, so that the flash will not be subject to flashover under high frequency conditions. Because the power consumed by the lamp flashing at different frequency bands is variable, it is difficult to control. When the strobe light is used as a light source for a print quality inspection, a higher requirement is also put forward for the performance of the strobe light. The time that the strobe light flashes after receiving the trigger signal must be the same, so program control and circuit design become more important. Figure 3 is a software system main program flow chart. The three flowcharts illustrate the working mode of the entire software system, and realize the stroboscopic and automatic frequency tracking function of the stroboscope.
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