The working principle and service life of explosion-proof camera infrared lamp

At present, the service life of explosion-proof cameras can be as long as ten years, so can infrared lamps be used for ten years? Today we will understand the working principle and service life of infrared lamps. There are three important production situations for infrared lamps: one, halogen lamps, two, multi-chip LEDs, and three, single-chip LEDs.


Halogen lamps have high energy consumption and large heat generation. They are infrared lamps used in the traditional market, and have a short service life. Therefore, it is difficult to be suitable for supporting applications of explosion-proof cameras.

There are also two situations for multi-chip LEDs. One is containing 4 to 8 chips; the other is an array light-emitting sheet, containing 10 to 30 chips. Why do multiple chips? The underlying reality is: the infrared lamp illumination interval is not enough because the energy is not enough, more chips are gathered together, of course, the energy is large, so the illumination interval is usually farther. This is correct if it can guarantee the reception rate of the infrared lamp's light, but under the premise that the reception rate cannot be guaranteed, no matter how many infrared lamp chips will only cause the operating temperature to be too high and affect the life span, it cannot really improve the infrared lamp Irradiation interval.

In general, the performance of multi-chip infrared cameras is still because of ordinary halogen lamps, but multi-chip LEDs have no luminous focus due to inherent defects in their structure, the luminous optical system is unreasonable, and the useful light efficiency is also relatively low. For example, the array LED has a current of more than 1000mA, which is basically a penny coin size, and heat dissipation becomes a problem. And all of us who do technology know that LEDzui is afraid of high heat. It is difficult to keep the heat high. At the same time, the production requirements of multi-chip LEDs are very strict, and each chip must not have a little difference in performance, otherwise if one chip breaks, it will harm the whole chip LED. In general, the life of the existing multi-chip technology LED is far from enough for explosion-proof infrared cameras.

The production process of single-chip LED is simple, the quality is easy to guarantee, the calorific value is low, and the light-emitting optical system is reasonable. It is an ideal device for making infrared lights of explosion-proof infrared cameras. In fact, the application life can reach more than 100,000 hours. Therefore, the technology is naturally biased towards a single chip. However, single-chip infrared lamps still have many restrictive factors. For example, some LED chips are very low in level, and impurities exceed the standard; some production processes are not close, there are leakage scenarios; some super-power applications, rated 20mA, but more than 50mA; Some have no maintenance circuits or unreasonable circuit design, which will cause the single-chip LED infrared lamp to quickly break down.

To ensure the longevity of the infrared lamp, we must first choose high-grade LED chips. High-grade chips have high power, good consistency, high luminous efficiency, and very little heat. A high-grade LED is 10 times better than ordinary LEDs, and of course the price is higher. Secondly, the optical system design should be reasonable, the light emission should be uniform, the utilization rate should be high, and the heat dissipation should be fast. Third, we must strictly control the working voltage. LEDs are very sensitive to voltage. LED dies will burn out when the voltage is slightly higher; and the amount of light emitted will be greatly reduced when the voltage is slightly lower. Matched with high-quality switching power supply, the AC input voltage can be well regulated from 170 volts to 270 volts, suitable for a tough power supply environment. Fourth, the input power cord is selected to be resistant to high / low temperature, super soft and tortuous. There is an infrared lamp produced by a manufacturer. The input power cord can be normally used at a low temperature of minus 60 degrees and a high temperature of 250 degrees. The minus four and fifty degrees cables are still as soft as silk. Such products can be trusted.

Therefore, there are also skills in the selection of infrared lights for explosion-proof cameras. After understanding these knowledge, I believe that in the choice of explosion-proof cameras in the future, it will be helpful to you.

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