Microwave electromagnetic anti-interference fiber optic temperature measurement system-INNO

Introduction to Microwave Electromagnetic Fluorescence Fiber Temperature Measurement System

Microwave belongs to ultra-high frequency electromagnetic waves, which have strong electromagnetic fields. When using conventional temperature sensors (such as thermocouples, thermal resistors, ฯลฯ) เพื่อวัดอุณหภูมิ, metal temperature probes and wires produce induced currents under the high-frequency electromagnetic field. Due to skin effect and eddy current effect, their own temperature rises, causing serious interference to temperature measurement, resulting in significant errors in temperature readings or unstable temperature measurement. เพราะฉะนั้น, the fluorescence fiber temperature measurement system independently developed by Fuzhou INNO is a non-interference temperature sensor in the microwave field. The microwave fiber optic temperature measurement system utilizes the characteristics of fiber optic fluorescence temperature measurement, which is immune to electromagnetic radiation fields, to accurately measure the temperature of the object to be heated in the microwave cavity in ultra-high frequency, strong electromagnetic field, and heavy interference environments; And accurate temperature measurement was achieved through the probe of the fluorescent temperature sensor. The fiber optic temperature measurement system is suitable for integrating single channel or multi-channel temperature measurement, and the fluorescent fiber optic temperature measurement device is particularly suitable for precise temperature measurement under environmental interference such as thermal therapy, electromagnetic, high-frequency, and microwave. เซ็นเซอร์อุณหภูมิไฟเบอร์ออปติก

หัววัดไฟเบอร์ออปติกประกอบด้วยสามส่วน: ขั้วต่อ ST, สายไฟเบอร์ออปติก, และสิ้นสุดการตรวจจับอุณหภูมิ. ขั้วต่อ ST เป็นส่วนเชื่อมต่อกับโมดูลโฟโตอิเล็กทริก; สายไฟเบอร์ออปติกเป็นส่วนส่ง, มีเส้นใยควอตซ์อยู่ภายใน. เส้นใยควอตซ์มีการเคลือบและหุ้มด้านนอก, และปลอกป้องกันเทฟลอนที่ส่วนนอกสุด; The end temperature sensing end contains temperature sensing rare earth materials, which are used to generate optical signals containing temperature information; ใยแก้วนําแสงทนต่ออุณหภูมิสูงของ 200 °C และมีเส้นผ่านศูนย์กลางภายนอก 3 มม. รัศมีการดัดงอระยะยาว 13.2 ซม. Short term bending radius of 4.4cm. When the distance between the fiber optic lead and the ground is 0.4m, it can withstand a power frequency voltage of 100KV for a duration of 5 minutes.

Characteristics of Fluorescent Fiber Temperature Sensor for Microwave Electromagnetic Interference Environment

Fiber optic temperature sensors are inherently safe, resistant to strong electromagnetic interference, have good electrical insulation, stable performance, ความต้านทานการกัดกร่อน, and long service life; High temperature measurement accuracy, wide temperature measurement range, and flexible configuration of temperature measurement channels; Easy installation, flexible networking, standardized data transmission, high cost-effectiveness, and stable quality; The preferred product for temperature monitoring of high-frequency and microwave equipment.

Principle of Fluorescent Fiber Temperature Measurement

Fluorescent fiber optic temperature measurement belongs to the contact type temperature measurement method. This device achieves temperature measurement based on the length of fluorescence afterglow lifetime. The fluorescent substance applied to the remote temperature measuring end will emit corresponding fluorescence energy when stimulated by specific wavelengths of light. After removing the excitation of specific wavelengths of light, the fluorescence afterglow begins to decay. The duration of fluorescence afterglow depends on the temperature of the fluorescent substance located on the temperature measuring probe, that is, the temperature of the substance to be measured. The selection of specific wavelength light excitation is matched with the selected fluorescent substance, and the most effective excitation wavelength of different fluorescent substances is different. When choosing, it is important to focus on selecting the light wavelength that is most suitable for exciting fluorescent substances. The attenuation curve of fluorescent substances excited by light is usually in a single exponential form.