Abstract: The stroboscopic effect of electric light source is extremely harmful, and the technical mechanism generated is more complicated. This paper only briefly understands the technical mechanism and harmful performance of stroboscopic and stroboscopic effects from the perspective of correctly understanding the harmful effects of stroboscopic effects and scientific selection of new light sources and constructing a bright and comfortable green lighting environment. Technical countermeasures.
Keywords: stroboscopic, stroboscopic effect, driving electric power frequency, energy saving lamp.
While the electric light source brings light to humans, it also brings new harm to human beings due to the stroboscopic light of the electric light source, namely the stroboscopic effect.
The stroboscopic effect refers to two concepts. One is stroboscopic: the depth at which the luminous flux of the electric source fluctuates. The greater the depth of the undulation, the greater the stroboscopic depth. The second is the stroboscopic effect: the negative effect of the strobe of the electric light source on human vision. The more severe the strobe, the greater the negative effect and the greater the damage. The stroboscopic and stroboscopic effects are directly related to the type of electric light source and its technical performance. Different types of electric light sources with different technical performances have different stroboscopic and stroboscopic effects.
Correct understanding of the hazards of stroboscopic and stroboscopic effects of electric light sources, scientific understanding of improved technical measures, is of scientific importance for the construction of a bright and comfortable green lighting environment.
one. The stroboscopic depth of commonly used electric light sources Currently, in the production field and daily life, the most widely used electric light sources are mainly incandescent lamps, high-pressure mercury (sodium) lamps, and straight tube (inductive) fluorescent lamps. The stroboscopic depths of the above several electric light sources are listed below:
Incandescent high pressure mercury (sodium) lamp straight tube type fluorescent lamp (with magnetic ballast)
Strobe depth 50% 65% 55%
Strobe frequency 100Hz 100Hz 00Hz
Due to grid voltage fluctuations, the stroboscopic depth in the above table will actually increase by 10% to 20%.
two. The stroboscopic effect of the stroboscopic effect of the electric light source has caused irreparable serious harm to human production, daily life, and physical and mental health. Mainly in the following aspects:
1. Initiation of work-related accidents: When the stroboscopic frequency of an electric light source is in integral multiple with the speed (rotational speed) of a moving (rotating) object, the motion (rotation) state of the moving (rotating) object produces static, reverse, and motion (rotation) The speed is slow, and the above three states periodically repeat the wrong vision, causing a work-related accident.
For example, the sewing machine operator in the garment industry illusion that the needle moving up and down at high speed is in a static state, and the finger is inadvertently injured. For example, the machine tool operator in the machining industry, for the forward rotation of the turning tool, the illusion is reversed, and the emergency reversing operation, damage to the workpiece, the tool, and even cause casualties. For example, in the machinery industry, the crane operator has a slow moving motion, such as a slow movement of the crane and the hook, and an instantaneous vision, which causes difficulty in positioning, causing operational errors and causing accidents. For example, in the machinery industry, the production operator has a false vision of slow rotation and reverse rotation of the flywheel and pulley of the production equipment, resulting in misoperation and accident.
2. Caused by low production efficiency: stroboscopic effects can cause visual fatigue and migraine. In particular, the machinery industry uses high-pressure mercury (sodium) lamps and light industry, food, printing, electronics, textile and other industries, especially in the case of straight tube (inductive) fluorescent lamps. For example, plug-in operators on the assembly line are prone to migraine due to visual fatigue and vertigo, resulting in difficult positioning and low production efficiency.
3. Adolescents who are growing up hurt their eyes and form myopia. After the 1980s in China, straight-tube (inductive) fluorescent lamps were widely used in homes, schools, libraries, etc. The growing primary and secondary school students suffered greatly, their visual acuity decreased significantly, and myopia increased significantly.
three. Technical reasons for stroboscopic analysis The technical reasons for the stroboscopic generation of electric light sources include the factors of power supply, the factors behind the performance of electric light source technology, and the unreasonable lighting design. And it is the result of a combination of many factors, the technical mechanism is more complicated. Due to space limitations, this article only provides a general technical analysis from the perspective of the performance of common electric light source technology.
1. The electric light source power supply frequency is low. Incandescent lamps, high-pressure mercury (sodium) lamps, and straight-tube (inductive) fluorescent lamps, at this stage, are mostly powered by 50Hz power frequency sinusoidal alternating current, directly to the illuminant of the electric light source. The stroboscopic frequency is 50 Hz*2=100 Hz, and it fluctuates in a sine wave pattern.
2. The electric light source supply voltage fluctuates greatly. At present, the power frequency AC power supply in China has a transient voltage value fluctuation range of 10% to 20%, which greatly increases the stroboscopic depth with a frequency of 100 Hz and a sinusoidal wave.
3. The performance of electric light source technology is backward. The incandescent lamp is a heat radiating light source that directly heats the filament, and the luminous power of the illuminating body fluctuates sinusoidally with the frequency of the power supply. High-pressure mercury (sodium) lamp, straight tube type (inductive) fluorescent lamp, although it is an electric light source for gas discharge, it uses an inductive ballast for its starting and ignition (does not have AC-DC-AC frequency conversion function). Therefore, the discharge power of the gas discharge tube will inevitably fluctuate with the sine wave law with the frequency of the power supply.
four. Improvement measures of stroboscopic effect The fundamental technical countermeasure for improving the stroboscopic of electric light source is to increase the driving electric power frequency of the illuminant of the electric light source to reach 40KHz or more. From the macroscopic point of view, there are many measures to improve the driving electric power frequency of the electric light source illuminator, but at this stage, some technical measures are impossible to achieve, or the realization cost is high. The most likely, most economical, and most effective way is to choose a new type of electric light source with AC-DC-AC frequency conversion.
Comprehensive considerations, electric light source application environment, luminous bright (brightness), color rendering performance, stroboscopic effect, energy saving effect, performance price ratio, lighting quality and other factors. This paper selects a new type of electric light source with AC-DC-AC frequency conversion function. Three primary color high frequency and high power industrial special energy saving lamps (referred to as energy saving lamps). Through the scientific lighting engineering design, supplemented by the use of superior lighting, it can eliminate the stroboscopic effect and build a bright and comfortable green lighting environment.
The basic principle of energy-saving lamps is to use an all-electronic ballast with AC-DC-AC frequency conversion function to convert 50Hz and 220V power frequency AC power into smooth DC power. The direct current is converted into a high-frequency alternating current of 40 kHz or higher, and is applied to a three-primary fluorescent tube to drive the fluorescent tube to discharge light. Due to the high frequency and low fluctuation of the driving electric power, the stroboscopic depth of the fluorescent tube is less than 5%, and there is no stroboscopic effect. According to scientific calculations, the experiment proves that the electric power frequency for driving the fluorescent tube discharge should be between 40KHz and 80KHz, and the higher the frequency within this range, the smaller the stroboscopic depth of the fluorescent tube and the smaller the stroboscopic effect. The harm is smaller.
It should be specially stated that the energy-saving lamps that are being sold in the market do not have the conversion frequency of the electronic ballasts above 40KHz. Some inferior energy-saving lamps change frequency only at around 20KHz, and even as low as 17KHz. Still producing a stroboscopic depth of 2O-3O%, there is still a serious stroboscopic effect hazard.
Fives. Conclusion The three-color high-frequency high-power industrial special energy-saving lamp is adopted, and the electronic ballast has AC-DC-AC frequency conversion function. When the conversion frequency can reach 4OKHz or more, the stroboscopic depth can be reduced to 5% or less, and the stroboscopic effect can be eliminated. Moreover, the luminous efficiency of the fluorescent tube can be improved, the power consumption can be reduced, and the brightness can be improved. It is the ideal source for a bright, comfortable green lighting environment.
Qingdao Huabeier Microelectronics Studio High Frequency Light Source Division is a high-tech enterprise specializing in the production of energy-saving lamps for high-frequency, high-frequency industrial and high-frequency electronic ballasts. The Huabel series of three-color high-frequency and high-power industrial special energy-saving lamps produced by the company use electronic ballasts and AC-DC-AC conversion frequency up to 46KHz. High light efficiency, high brightness, low failure rate and long life. High color rendering, no stroboscopic effect hazard.
Editor: China Lighting Network / Leaves
Keywords: stroboscopic, stroboscopic effect, driving electric power frequency, energy saving lamp.
While the electric light source brings light to humans, it also brings new harm to human beings due to the stroboscopic light of the electric light source, namely the stroboscopic effect.
The stroboscopic effect refers to two concepts. One is stroboscopic: the depth at which the luminous flux of the electric source fluctuates. The greater the depth of the undulation, the greater the stroboscopic depth. The second is the stroboscopic effect: the negative effect of the strobe of the electric light source on human vision. The more severe the strobe, the greater the negative effect and the greater the damage. The stroboscopic and stroboscopic effects are directly related to the type of electric light source and its technical performance. Different types of electric light sources with different technical performances have different stroboscopic and stroboscopic effects.
Correct understanding of the hazards of stroboscopic and stroboscopic effects of electric light sources, scientific understanding of improved technical measures, is of scientific importance for the construction of a bright and comfortable green lighting environment.
one. The stroboscopic depth of commonly used electric light sources Currently, in the production field and daily life, the most widely used electric light sources are mainly incandescent lamps, high-pressure mercury (sodium) lamps, and straight tube (inductive) fluorescent lamps. The stroboscopic depths of the above several electric light sources are listed below:
Incandescent high pressure mercury (sodium) lamp straight tube type fluorescent lamp (with magnetic ballast)
Strobe depth 50% 65% 55%
Strobe frequency 100Hz 100Hz 00Hz
Due to grid voltage fluctuations, the stroboscopic depth in the above table will actually increase by 10% to 20%.
two. The stroboscopic effect of the stroboscopic effect of the electric light source has caused irreparable serious harm to human production, daily life, and physical and mental health. Mainly in the following aspects:
1. Initiation of work-related accidents: When the stroboscopic frequency of an electric light source is in integral multiple with the speed (rotational speed) of a moving (rotating) object, the motion (rotation) state of the moving (rotating) object produces static, reverse, and motion (rotation) The speed is slow, and the above three states periodically repeat the wrong vision, causing a work-related accident.
For example, the sewing machine operator in the garment industry illusion that the needle moving up and down at high speed is in a static state, and the finger is inadvertently injured. For example, the machine tool operator in the machining industry, for the forward rotation of the turning tool, the illusion is reversed, and the emergency reversing operation, damage to the workpiece, the tool, and even cause casualties. For example, in the machinery industry, the crane operator has a slow moving motion, such as a slow movement of the crane and the hook, and an instantaneous vision, which causes difficulty in positioning, causing operational errors and causing accidents. For example, in the machinery industry, the production operator has a false vision of slow rotation and reverse rotation of the flywheel and pulley of the production equipment, resulting in misoperation and accident.
2. Caused by low production efficiency: stroboscopic effects can cause visual fatigue and migraine. In particular, the machinery industry uses high-pressure mercury (sodium) lamps and light industry, food, printing, electronics, textile and other industries, especially in the case of straight tube (inductive) fluorescent lamps. For example, plug-in operators on the assembly line are prone to migraine due to visual fatigue and vertigo, resulting in difficult positioning and low production efficiency.
3. Adolescents who are growing up hurt their eyes and form myopia. After the 1980s in China, straight-tube (inductive) fluorescent lamps were widely used in homes, schools, libraries, etc. The growing primary and secondary school students suffered greatly, their visual acuity decreased significantly, and myopia increased significantly.
three. Technical reasons for stroboscopic analysis The technical reasons for the stroboscopic generation of electric light sources include the factors of power supply, the factors behind the performance of electric light source technology, and the unreasonable lighting design. And it is the result of a combination of many factors, the technical mechanism is more complicated. Due to space limitations, this article only provides a general technical analysis from the perspective of the performance of common electric light source technology.
1. The electric light source power supply frequency is low. Incandescent lamps, high-pressure mercury (sodium) lamps, and straight-tube (inductive) fluorescent lamps, at this stage, are mostly powered by 50Hz power frequency sinusoidal alternating current, directly to the illuminant of the electric light source. The stroboscopic frequency is 50 Hz*2=100 Hz, and it fluctuates in a sine wave pattern.
2. The electric light source supply voltage fluctuates greatly. At present, the power frequency AC power supply in China has a transient voltage value fluctuation range of 10% to 20%, which greatly increases the stroboscopic depth with a frequency of 100 Hz and a sinusoidal wave.
3. The performance of electric light source technology is backward. The incandescent lamp is a heat radiating light source that directly heats the filament, and the luminous power of the illuminating body fluctuates sinusoidally with the frequency of the power supply. High-pressure mercury (sodium) lamp, straight tube type (inductive) fluorescent lamp, although it is an electric light source for gas discharge, it uses an inductive ballast for its starting and ignition (does not have AC-DC-AC frequency conversion function). Therefore, the discharge power of the gas discharge tube will inevitably fluctuate with the sine wave law with the frequency of the power supply.
four. Improvement measures of stroboscopic effect The fundamental technical countermeasure for improving the stroboscopic of electric light source is to increase the driving electric power frequency of the illuminant of the electric light source to reach 40KHz or more. From the macroscopic point of view, there are many measures to improve the driving electric power frequency of the electric light source illuminator, but at this stage, some technical measures are impossible to achieve, or the realization cost is high. The most likely, most economical, and most effective way is to choose a new type of electric light source with AC-DC-AC frequency conversion.
Comprehensive considerations, electric light source application environment, luminous bright (brightness), color rendering performance, stroboscopic effect, energy saving effect, performance price ratio, lighting quality and other factors. This paper selects a new type of electric light source with AC-DC-AC frequency conversion function. Three primary color high frequency and high power industrial special energy saving lamps (referred to as energy saving lamps). Through the scientific lighting engineering design, supplemented by the use of superior lighting, it can eliminate the stroboscopic effect and build a bright and comfortable green lighting environment.
The basic principle of energy-saving lamps is to use an all-electronic ballast with AC-DC-AC frequency conversion function to convert 50Hz and 220V power frequency AC power into smooth DC power. The direct current is converted into a high-frequency alternating current of 40 kHz or higher, and is applied to a three-primary fluorescent tube to drive the fluorescent tube to discharge light. Due to the high frequency and low fluctuation of the driving electric power, the stroboscopic depth of the fluorescent tube is less than 5%, and there is no stroboscopic effect. According to scientific calculations, the experiment proves that the electric power frequency for driving the fluorescent tube discharge should be between 40KHz and 80KHz, and the higher the frequency within this range, the smaller the stroboscopic depth of the fluorescent tube and the smaller the stroboscopic effect. The harm is smaller.
It should be specially stated that the energy-saving lamps that are being sold in the market do not have the conversion frequency of the electronic ballasts above 40KHz. Some inferior energy-saving lamps change frequency only at around 20KHz, and even as low as 17KHz. Still producing a stroboscopic depth of 2O-3O%, there is still a serious stroboscopic effect hazard.
Fives. Conclusion The three-color high-frequency high-power industrial special energy-saving lamp is adopted, and the electronic ballast has AC-DC-AC frequency conversion function. When the conversion frequency can reach 4OKHz or more, the stroboscopic depth can be reduced to 5% or less, and the stroboscopic effect can be eliminated. Moreover, the luminous efficiency of the fluorescent tube can be improved, the power consumption can be reduced, and the brightness can be improved. It is the ideal source for a bright, comfortable green lighting environment.
Qingdao Huabeier Microelectronics Studio High Frequency Light Source Division is a high-tech enterprise specializing in the production of energy-saving lamps for high-frequency, high-frequency industrial and high-frequency electronic ballasts. The Huabel series of three-color high-frequency and high-power industrial special energy-saving lamps produced by the company use electronic ballasts and AC-DC-AC conversion frequency up to 46KHz. High light efficiency, high brightness, low failure rate and long life. High color rendering, no stroboscopic effect hazard.
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