Application of Infrared Thermometer in Detection System
The function of the detection system is the product of the development of infrared thermometer technology to a certain stage. The detection system is an organic combination of thermometers, measuring instruments, and conversion devices.
Error is the difference between the measured value and the true value, which reflects the accuracy of the measurement.
With the development of science and technology, people have higher and higher requirements for measurement accuracy. It can be said that the value of measurement work depends on the measurement accuracy. When the measurement error exceeds a certain limit, the measurement work and measurement results will lose their meaning, and even bring harm to the work. Therefore, the analysis and control of measurement errors has become an important aspect to measure the level of measurement technology and even the level of science and technology. However, due to the inevitability and universality of error, people can only control the error in the smallest possible range, but cannot completely eliminate it.
On the other hand, the reliability of measurement is also very important, and different occasions and different systems have different requirements for the reliability of measurement results. For example, when the measured value is used as a control signal, attention should be paid to the stability and reliability of the measurement. Therefore, performance indicators such as measurement accuracy and reliability must be related to and adapted to specific measurement purposes and requirements. In this way, the functions and characteristics of the infrared thermometer can be better played!
In engineering practice, it is necessary to organically combine a thermometer with multiple measuring instruments to form a whole to complete the detection of electrical signals, thus forming a detection system. With the continuous development of computer technology and information processing technology, the content involved in the detection system has also been continuously enriched. In the modern production process, the detection of process parameters is carried out automatically, that is, the detection task is automatically completed by the detection system, so it is necessary to study and master the composition and principle of the detection system.
The purpose of measurement is to obtain the real value of the measured value through measurement. However, in the actual measurement process, due to various reasons, such as the unsatisfactory performance of the thermometer itself, the imperfect measurement method, the influence of external interference and human negligence, etc., the measured values of the measured parameters will be inconsistent with the real values. The degree of inconsistency is represented by measurement error.
The infrared thermometer in the system is a device or device that measures the size of the object to be measured and outputs a corresponding usable output signal. The data transmission link is used to transmit data. When several functional links of the detection system are separated independently, data must be transmitted from one place to another, and the data transmission link is to complete this transmission function. the
From the point of view of the infrared thermometer product itself, the infrared thermometer is a mature product. With the development of technology in recent years, on the one hand, the intelligentization of infrared thermometer products has added functions such as self-diagnosis and self-calibration. In this way, some online self-diagnosis functions are realized, the maintenance workload of the equipment is reduced, and the traditional offline inspection method is replaced by online inspection. The online inspection method of infrared thermometers is becoming more and more mature from birth to application, but it will take some time to be promoted in various industries across the country. The biggest difficulty is that the infrared thermometer is an instrument, and its online inspection specifications need to be recognized by the national technical supervision department and relevant industry associations.
The data processing link is to process and transform the output signal of the thermometer. Such as amplifying, computing, filtering, linearizing, digital-to-analog (D/A) or analog-to-digital (D/A) conversion of the signal, converting it into another parameter signal or a standardized unified signal, etc., so that the output signal It is convenient for display and recording, and can also be connected with a computer system for information processing of measurement signals or for automatic control of the system. The data display link changes the measured information into a form acceptable to the senses, so as to achieve the purpose of monitoring, control or analysis. The measurement results can be displayed by analog or digital, and can be automatically recorded by the recording device or printed out by the printer.
