Working principle of precision tubular sensor: The sensor usually consists of specially designed physical quantity sensitive elements, signal conversion circuits and processing circuits. The overall workflow is as follows: Sensing external physical quantities: the sensitive elements of precision tubular sensors contact external physical quantities, such as piezoresistive materials in pressure sensors and thermistors in temperature sensors. These sensitive elements can sense external physical quantities such as pressure, temperature, humidity, electric field and magnetic field, and convert them into corresponding electrical signals for output. Signal conversion.
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I will answer; The signal converter of the precision tube sensor can convert the above output electric signal into a signal type more suitable for the processing and control system. These signal types include analog voltage/current signals, digital pulse signals, etc. ? Processing and amplification: the converted signal is sent to the processing circuit board of the sensor, and it may be necessary to denoise the signal with a filter circuit. The gain circuit can make the processed signal more accurate for the required controller. Output result: Finally, the sensor outputs the processed signal to digital electronic devices such as computers and microprocessors for data processing and control. Through the analysis and interpretation of the sensor output data, digital devices can realize the perception and response to the external environment. Based on the different working principles and the different choices of physical sensors, we can divide the common sensors into the following categories: chemical sensors: sensors used to detect specific chemicals in gas or liquid, such as carbon dioxide sensors and oxygen sensors. Its sensitive elements are usually electrochemical cells, semiconductor materials and so on. ? Optical sensor: uses the optical principle to detect the optical characteristics of the measured object, including reflection, transmission and absorption, such as photoelectric sensor and infrared sensor. ? Sound sensor: used to sense the change of surrounding sound and input it to relevant equipment for signal processing and control. Displacement sensor: used to detect the position or motion state of an object, such as magnetoelectric induction displacement sensor and piezoelectric displacement sensor. ? Measuring sensor: used to measure the size, weight or shape of an object, such as a blood pressure sensor and a weight scale. To sum up, precision electron tube sensor? It is a device that converts physical quantities into electrical signals. They sense the changes of the external environment through sensitive elements, convert them into digital or analog electrical signals through conversion and processing circuits, and output them to digital electronic devices such as computers for control and processing.