Common models of infrared sensors for thermal imaging cameras

The NTC thermistor is a typical representative of thermistor-type infrared sensors. It has a simple structure and a significant advantage, and was widely used in early thermal imaging equipment. Its working principle is based on the characteristic of the thermistor's resistance changing with temperature. When it receives radiation, its own temperature rises, and the resistance value changes accordingly, thus detecting the intensity of infrared radiation. However, the sensitivity and response speed of this model are limited, and it is gradually replaced in scenarios where high precision and response speed are required. However, it can still play a role in some basic applications that are sensitive cost and do not require high precision, such as simple temperature monitoring devices.

This thermopile sensor from Heimann performs exceptionally well industrial rapid detection and flame monitoring. It consists of multiple thermocouples connected in series. When infrared radiation is applied, a temperature difference is generated at both ends, a thermoelectric potential is generated based on the Seebeck effect. The infrared radiation intensity is determined by measuring the thermoelectric potential. On the car parts production, it can quickly detect whether the surface temperature of the parts is uniform, ensuring product quality; in flame monitoring scenarios, it can quickly respond to changes in the infrared of the flame and issue an alarm in time. Its fast response and good stability make it an ideal choice for such scenarios.

The ULIS series is a standout in microbolometer-type infrared sensors. It works by using the characteristic of the conductivity of semiconductor materials changing with temperature. After receiving infrared radiation, the temperature rises, the electrical conductivity of the semiconductor changes, resulting in a change in resistance value and then the infrared radiation intensity is calculated. In security monitoring, with high sensitivity and high resolution, it can clearly capture the subtle temperature differences at night, helping security to discover potential threats in time; in medical diagnosis, it can detect abnormal surface temperature of the human body, assist in disease diagnosis; in the field of scientific research it provides high-precision temperature data for the study of material thermal performance. The technical highlight is its mature microbolometer technology, and the market positioning is mid-to-end, widely used in professional fields with high requirements for thermal imaging quality.

This model is often used in temperature measurement scenarios for face recognition. It has high temperature measurement accuracy and stability. It can quickly and accurately detect human body temperature, and combined with image recognition technology, can achieve the integration of face recognition and temperature detection, which is widely used in access control systems, public places temperature screening and other scenarios, effectively improving the efficiency of detection and management. Its technical advantage lies in the precise temperature measurement and efficient image recognition integration, mainly facing the security, public health epidemic prevention and other markets that demand for personnel identity and temperature detection.

This is a high- infrared thermal imaging sensor probe with a temperature measurement range of -40 to 85℃, using TO39 packaging. It integrates a large number of microometer pixels, capable of providing high-resolution thermal imaging data. It is often used in industrial inspection, temperature monitoring in smart homes, and thermal analysis in scientific research experiments and can accurately measure the surface temperature distribution of objects, providing reliable data support for related applications. This model is characterized by high precision and a wide temperature measurement range, is positioned as a mid-to-high-end product in the industrial and scientific research fields, meeting applications with strict requirements for the precision of thermal imaging data.

The AMG8833 is an 8x8 pixel thermal imaging sensor is compact in size and easy to integrate into various small devices. It can quickly capture the two-dimensional thermal image of an object. Although the pixel is relatively low, performs well in some applications that do not require high resolution and focus on device miniaturization, such as body temperature monitoring in wearable devices and environmental temperature sensing in small home devices. Its outstanding advantages are its compact size and low cost, mainly facing the consumer market that is sensitive to device size and cost.

The GST320 uses a 320x240 resolution uncooled focal plane detector made of vanadium oxide, which has high and good temperature uniformity. It is widely used in security monitoring, power patrol inspection, and other fields, and can clearly capture the temperature distribution of the target object helping staff to promptly discover potential safety hazards.

Dali Technology's TMR series covers a variety of models, featuring high resolution and dynamic range. This series of products uses advanced microbolometer technology and can provide clear and stable thermal imaging images in complex environments. It plays an important role in fire prevention, high-end security, and other fields, and can promptly discover fire hazards and abnormal situations through temperature monitoring of large areas. The TMR series, with excellent performance, is positioned in the high-end market, meeting applications with extremely high requirements for thermal imaging quality and reliability.

These common models of infrared sensors play a key in thermal imaging cameras in different fields with their respective characteristics. With the continuous development of technology, more high-performance and distinctive infrared sensor models will continue to emerge, promoting further development and application of thermal imaging technology.