Working principle and service life of explosion-proof camera infrared light
2024-4-11 View：
At present, the service life of explosion-proof cameras can be as long as ten years, so can infrared lamps also be used for ten years? Today we will learn about the working principle and service life of infrared lamps. There are three main manufacturing forms of infrared lamps: 1. Halogen lamp, 2. Multi-chip LED, and 3. Single-chip LED.
Halogen lamps have high energy consumption and high calorific value. They are infrared lamps used in the traditional market and have a short service life, so they are difficult to be used in explosion-proof cameras.
Multi-chip LEDs also come in two forms, one containing 4 to 8 chips; the other is an array-type light-emitting sheet containing 10 to 30 chips. Why make multiple chips? The underlying reality is: the infrared light irradiation interval is not enough because the energy is insufficient. More chips are gathered together, and of course the energy is greater. In this case, the irradiation interval is usually farther. This is correct if the reception rate of the light of the infrared lamp can be guaranteed, but if the reception rate cannot be guaranteed, more infrared light chips will only cause the operating temperature to be too high and affect the lifespan, and cannot really improve the infrared lamp. Irradiation interval.
Generally speaking, the performance of multi-chip infrared cameras is still better than ordinary halogen lamps, but multi-chip LEDs have no luminous focus due to inherent structural defects, the luminous optical system is unreasonable, and the useful light efficiency is relatively low. For example, the current of array LEDs is as high as 1000mA or more, which is basically the size of a penny, so heat dissipation becomes a problem. As all of us who work in technology know, the most fearful thing about LEDs is high heat. It is difficult not to break down when the heat is high. At the same time, the production requirements for multi-chip LEDs are very strict. Each chip must not have any difference in performance. Otherwise, if one chip breaks, it will damage the entire LED chip. Generally speaking, when used in explosion-proof infrared cameras, the lifespan of existing multi-chip technology LEDs is far from enough.
The single-chip LED production process is simple, the quality is easy to guarantee, the heat generation is low, and the light-emitting optical system is reasonable. It is an ideal device for explosion-proof infrared camera infrared lights. In fact, its service life can reach more than 100,000 hours. Therefore, it is natural to favor single-chip technology technically. However, there are still many restrictive factors for single-chip infrared lamps. For example, some LED chips are of very low grade and have excessive impurities; some production processes are not up to par and leakage occurs; some are used for ultra-power applications, rated 20mA, but use more than 50mA; Some have no protection circuit, or the circuit design is unreasonable, which will cause the single-chip LED infrared light to break down quickly.
To ensure the life of infrared lamps, you must first choose high-grade LED chips. High-grade chips have high power, good consistency, high luminous efficiency, and low heat generation. A high-grade LED is 10 times better than ordinary LEDs, and of course the price is higher. Secondly, the optical system design must be reasonable, the light emission must be uniform, the utilization rate must be high, and the heat dissipation must be fast. Third, the working voltage must be strictly controlled. LEDs are very sensitive to voltage. If the voltage is slightly higher, the LED die will burn out; if the voltage is slightly lower, the amount of light will be greatly reduced. It is best to match a high-quality switching power supply. The AC input voltage should be well regulated from 170 volts to 270 volts to suit the harsh power supply environment. Fourth, it is best to use input power cords that are resistant to high/low temperatures, super soft and resistant to bending. There is an infrared lamp produced by one manufacturer. The power cord can be used normally at a low temperature of minus 60 degrees and a high temperature of 250 degrees above zero. The cable is still as soft as silk at minus 40 or 50 degrees. Such a product is trustworthy.
Therefore, there are also skills in selecting infrared lights for explosion-proof cameras. After understanding this knowledge, I believe it will be helpful to you in the future selection of explosion-proof cameras.
Halogen lamps have high energy consumption and high calorific value. They are infrared lamps used in the traditional market and have a short service life, so they are difficult to be used in explosion-proof cameras.
Multi-chip LEDs also come in two forms, one containing 4 to 8 chips; the other is an array-type light-emitting sheet containing 10 to 30 chips. Why make multiple chips? The underlying reality is: the infrared light irradiation interval is not enough because the energy is insufficient. More chips are gathered together, and of course the energy is greater. In this case, the irradiation interval is usually farther. This is correct if the reception rate of the light of the infrared lamp can be guaranteed, but if the reception rate cannot be guaranteed, more infrared light chips will only cause the operating temperature to be too high and affect the lifespan, and cannot really improve the infrared lamp. Irradiation interval.
Generally speaking, the performance of multi-chip infrared cameras is still better than ordinary halogen lamps, but multi-chip LEDs have no luminous focus due to inherent structural defects, the luminous optical system is unreasonable, and the useful light efficiency is relatively low. For example, the current of array LEDs is as high as 1000mA or more, which is basically the size of a penny, so heat dissipation becomes a problem. As all of us who work in technology know, the most fearful thing about LEDs is high heat. It is difficult not to break down when the heat is high. At the same time, the production requirements for multi-chip LEDs are very strict. Each chip must not have any difference in performance. Otherwise, if one chip breaks, it will damage the entire LED chip. Generally speaking, when used in explosion-proof infrared cameras, the lifespan of existing multi-chip technology LEDs is far from enough.
The single-chip LED production process is simple, the quality is easy to guarantee, the heat generation is low, and the light-emitting optical system is reasonable. It is an ideal device for explosion-proof infrared camera infrared lights. In fact, its service life can reach more than 100,000 hours. Therefore, it is natural to favor single-chip technology technically. However, there are still many restrictive factors for single-chip infrared lamps. For example, some LED chips are of very low grade and have excessive impurities; some production processes are not up to par and leakage occurs; some are used for ultra-power applications, rated 20mA, but use more than 50mA; Some have no protection circuit, or the circuit design is unreasonable, which will cause the single-chip LED infrared light to break down quickly.
To ensure the life of infrared lamps, you must first choose high-grade LED chips. High-grade chips have high power, good consistency, high luminous efficiency, and low heat generation. A high-grade LED is 10 times better than ordinary LEDs, and of course the price is higher. Secondly, the optical system design must be reasonable, the light emission must be uniform, the utilization rate must be high, and the heat dissipation must be fast. Third, the working voltage must be strictly controlled. LEDs are very sensitive to voltage. If the voltage is slightly higher, the LED die will burn out; if the voltage is slightly lower, the amount of light will be greatly reduced. It is best to match a high-quality switching power supply. The AC input voltage should be well regulated from 170 volts to 270 volts to suit the harsh power supply environment. Fourth, it is best to use input power cords that are resistant to high/low temperatures, super soft and resistant to bending. There is an infrared lamp produced by one manufacturer. The power cord can be used normally at a low temperature of minus 60 degrees and a high temperature of 250 degrees above zero. The cable is still as soft as silk at minus 40 or 50 degrees. Such a product is trustworthy.
Therefore, there are also skills in selecting infrared lights for explosion-proof cameras. After understanding this knowledge, I believe it will be helpful to you in the future selection of explosion-proof cameras.