Integrated fluorescence sensor and temperature measurement system

Abstract

The utility model discloses an integrated fluorescence sensor and a temperature measuring system, comprising a fluorescence fiber temperature acquisition instrument and a plurality of integrated fluorescence fiber temperature sensors, one side of the fluorescence fiber temperature acquisition instrument is provided with a plurality of electrical interfaces, each integrated fluorescence fiber temperature sensor comprises a sensor body and a demodulation assembly, the sensor body is used for measuring temperature, the integrated fluorescent optical fiber temperature sensor consists of the fluorescent optical fiber temperature acquisition instrument and the plurality of integrated fluorescent optical fiber temperature sensors, the sensor body is permanently fixed with the demodulation module, and a pair of calibration is adopted, so that the temperature measurement precision is high; an integrated fluorescent optical fiber temperature sensor is connected with a fluorescent optical fiber temperature acquisition instrument through an electrical interface, the temperature measurement system can replace the temperature sensor according to requirements, optical path butt joint change does not exist, the temperature measurement precision is not affected, and good interchangeability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorescence optical fiber temperature measurement, and specifically relates to an integrated fluorescence sensor and a temperature measurement system. Background Technique

[0002] Temperature is a very important environmental parameter in various fields. Due to its advantages such as electromagnetic immunity, fire and explosion prevention, and high reliability, optical fiber temperature sensors have been fully developed and applied in industries such as electric power, medical treatment, and semiconductors. The fluorescence optical fiber temperature sensor is a temperature sensor made of rare earth fluorescent substances as temperature-sensitive substances. Its related temperature measurement system is based on the characteristics that after the rare earth fluorescent substances are excited by an excitation light source, the luminescence characteristics are linearly related to the temperature for temperature demodulation.

[0003] At present, most of the fluorescence optical fiber temperature measurement systems on the market are in the form that the fluorescence optical fiber temperature sensor is connected to a functional device through a transmission optical fiber. The functional device integrates devices such as an optical module, a demodulation module, an acquisition and display module, a power supply module, and an external data interface; the functional device emits an excitation light source, which is transmitted through the transmission optical fiber to the photosensitive substance of the fluorescence temperature sensor. After the light source excitation stops, the feedback light source emitted by the fluorescent substance is transmitted through the transmission optical fiber to the functional device for temperature demodulation, display, and external output. We notice that when the temperature sensor and the functional device are plugged and unplugged and replaced through the optical fiber interface, the change in the optical fiber docking causes the optical path structure to change every time, affecting the temperature measurement accuracy of the temperature measurement system. If the temperature measurement system is made into a fixed integrated structure of the temperature sensor and the functional device, it will affect the replacement flexibility of the temperature sensor.

[0004] Among them, the defects of plugging and unplugging and replacing the temperature sensor and the functional device through the optical fiber interface are as follows:

[0005] 1. Compatibility problems are prone to occur between the demodulation modules of the temperature sensor and the functional device. Each time the temperature drifts within a certain range through the optical fiber interface plugging and unplugging, and the temperature measurement accuracy of this system is not high;

[0006] 2. Plugging and unplugging through the optical fiber interface will introduce more interference and light source loss. For example, the optical interface of the sensor being dirty, dust, and water vapor will all affect the optical signal, affecting the temperature measurement accuracy;

[0007] 3. For the temperature measurement system in which the temperature sensor is connected to the functional device, if a connection failure occurs, it is necessary to repair or replace the temperature sensor and the functional device separately, increasing the operation and maintenance cost and time cost.

[0008] Therefore, it is necessary to develop a fluorescence optical fiber temperature sensor and a temperature measurement system that can achieve the replacement flexibility of the temperature sensor while taking into account the temperature measurement accuracy. Content of the Utility Model

[0009] 1. Technical problems to be solved by the utility model

[0010] In view of the defects in the above-mentioned background technology, the purpose of the present utility model is to provide an integrated fluorescence sensor and a temperature measurement system. The temperature measurement system consists of a fluorescence optical fiber temperature acquisition instrument and several integrated fluorescence optical fiber temperature sensors, and has higher temperature measurement accuracy and temperature performance.

[0011] 2. Technical solutions

[0012] To achieve the above purpose, the present utility model provides the following technical solutions:

[0013] An integrated fluorescence sensor and a temperature measurement system, including a fluorescence optical fiber temperature acquisition instrument and several integrated fluorescence optical fiber temperature sensors;

[0014] Several electrical interfaces are provided on one side of the fluorescence optical fiber temperature acquisition instrument;

[0015] The integrated fluorescence optical fiber temperature sensor includes a sensor body and a demodulation component. The sensor body is used for measuring temperature, and the demodulation component is used for demodulating the temperature measured by the sensor body and transmitting electrical signals. The integrated fluorescence optical fiber temperature sensor is detachably connected to the fluorescence optical fiber temperature acquisition instrument through the electrical interface.

[0016] Preferably, the sensor body includes a fluorescence temperature measurement probe, a temperature measurement optical fiber, a probe fixing part and an optical cable. One end of the temperature measurement optical fiber is fixedly connected to one side of the probe fixing part, the fluorescence temperature measurement probe is arranged at the end of the temperature measurement optical fiber away from the probe fixing part, and one end of the optical cable is fixedly connected to the other side of the probe fixing part.

[0017] Preferably, the demodulation component includes a demodulation module, a cable and an electrical connector. The demodulation module is fixedly connected to the end of the optical cable away from the probe fixing part, one end of the cable is fixedly connected to the demodulation module, the electrical connector is fixedly connected to the other end of the cable, and the electrical connector is detachably connected to the electrical interface.

[0018] Preferably, the side of the probe fixing part close to the temperature measurement optical fiber is provided with an external thread.

[0019] Preferably, a demodulation optical path and a demodulation circuit are arranged inside the demodulation module.

[0020] Preferably, an integrated processor, a power module and a communication module are arranged inside the fluorescence optical fiber temperature acquisition instrument.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the beneficial effects of the present utility model are:

[0023] (1) The utility model is composed of a fluorescent optical fiber temperature acquisition instrument and several integrated fluorescent optical fiber temperature sensors. The sensor body is permanently fixed to the demodulation module and calibrated one-to-one, with high temperature measurement accuracy; it directly demodulates the optical signal of the temperature measurement probe and outputs an electrical signal, with small optical fiber loss and high reliability in temperature measurement.

[0024] (2) The integrated fluorescent optical fiber temperature sensor of the utility model is connected to the fluorescent optical fiber temperature acquisition instrument through an electrical interface. The temperature measurement system can replace the temperature sensor according to requirements, without changing the optical path docking, without affecting the temperature measurement accuracy, and has good interchangeability. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the integrated fluorescent optical fiber temperature sensor of the integrated fluorescent sensor and temperature measurement system;

[0026] Figure 2 It is a schematic structural diagram of the fluorescent optical fiber temperature acquisition instrument of the integrated fluorescent sensor and temperature measurement system;

[0027] Figure 3 It is a schematic diagram of the system working principle.

[0028] In the figure: A, integrated fluorescent optical fiber temperature sensor; 1, fluorescent temperature measurement probe; 2, temperature measurement optical fiber; 3, probe fixing part; 301, external thread; 4, optical cable; 5, demodulation module; 6, cable; 7, electrical connector; 8, protective tail sleeve; B, fluorescent optical fiber temperature acquisition instrument; 9, electrical interface. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Embodiment:

[0031] Please refer to Figures 1-3, this embodiment provides an integrated fluorescence sensor and a temperature measurement system, including a fluorescence optical fiber temperature collector B and several integrated fluorescence optical fiber temperature sensors A. There are several electrical interfaces 9 provided on one side of the fluorescence optical fiber temperature collector B. The integrated fluorescence optical fiber temperature sensor A includes a sensor body and a demodulation component. The sensor body is used to measure temperature, and the demodulation component is used to demodulate the temperature measured by the sensor body and perform electrical signal transmission. The integrated fluorescence optical fiber temperature sensor A and the fluorescence optical fiber temperature collector B are detachably connected through the electrical interface 9. This temperature measurement system is composed of a fluorescence optical fiber temperature collector and several integrated fluorescence optical fiber temperature sensors, with higher temperature measurement accuracy and temperature performance. The temperature measurement system can replace the temperature sensor according to requirements, without optical path docking changes, and does not affect the temperature measurement accuracy, having good interchangeability.

[0032] In this embodiment, as Figure 1 shown, the sensor body includes a fluorescence temperature measurement probe 1, a temperature measurement optical fiber 2, a probe fixing part 3, and an optical cable 4. One end of the temperature measurement optical fiber 2 is fixedly connected to one side of the probe fixing part 3, and the fluorescence temperature measurement probe 1 is arranged at the end of the temperature measurement optical fiber 2 away from the probe fixing part 3. The fluorescence temperature measurement probe 1 is the part where rare earth fluorescence material is arranged at the tail end of the temperature measurement optical fiber 2. One end of the optical cable 4 is fixedly connected to the other side of the probe fixing part 3.

[0033] In this embodiment, as Figure 1 shown, an external thread 301 is provided on the side of the probe fixing part 3 close to the temperature measurement optical fiber 2. When actually measuring temperature, the fluorescence temperature measurement probe 1 of each integrated fluorescence optical fiber temperature sensor A contacts the point to be measured, and the probe fixing part 3 thread-fixes the fluorescence temperature measurement probe 1 with the object to be measured through the external thread 301, which is convenient for installation.

[0034] In this embodiment, as Figure 1 shown, the demodulation component includes a demodulation module 5, a cable 6, and an electrical connector 7. The demodulation module 5 is fixedly connected to the end of the optical cable 4 away from the probe fixing part 3. The optical cable 4 is connected to the input end of the demodulation module 5. One end of the cable 6 is fixedly connected to the demodulation module 5, and the electrical connector 7 is fixedly connected to the other end of the cable 6. The electrical connector 7 is detachably connected to the electrical interface 9. A demodulation optical path and a demodulation circuit are provided inside the demodulation module 5. The demodulation module 5 emits an excitation light source, which is transmitted to the fluorescence temperature measurement probe 1 through the optical cable 4, and receives the feedback light returned by the fluorescence temperature measurement probe 1, converts the feedback light signal into an electrical signal, and transmits it out through the cable 6. The electrical connector 7 connected to the other end of the cable 6 is used to connect to the fluorescence optical fiber temperature collector B, and transmits the electrical signal output by the demodulation module 5 to the fluorescence optical fiber temperature collector B, making the sensor body and the demodulation component permanently fixed and adopting one-to-one calibration, with high temperature measurement accuracy, and also having the interchangeability of a traditional temperature measurement system for the acquisition part.

[0035] In this embodiment, asFigure 1 As shown, protective tail sleeves 8 are sleeved at the connections between the optical cable 4 and the demodulation module 5, between the cable 6 and the demodulation module 5, and between the cable 6 and the electrical connector 7. The protective tail sleeve 8 can tightly fix the tails of the optical cable 4 and the cable 6, preventing loosening or displacement due to external forces during use, and ensuring stability and safety.

[0036] In this embodiment, as Figure 1 shown, an integrated processor, a power module, and a communication module are provided inside the fluorescent optical fiber temperature collector B. The power module and the communication module are respectively connected to the integrated processor. The integrated processor collects and processes and stores the electrical signals transmitted from several electrical interfaces 9, and converts them into temperature data; the communication module transmits the data output by the integrated processor externally; the power module provides power for the fluorescent optical fiber temperature collector B. In other embodiments, functional modules such as a display module and an alarm module can also be provided in the fluorescent optical fiber temperature collector B according to requirements.

[0037] Working principle: During actual temperature measurement, the fluorescence temperature measurement probe 1 of each integrated fluorescent optical fiber temperature sensor A is brought into contact with the point to be measured. The probe fixing part 3 thread-fixes the fluorescence temperature measurement probe 1 to the object to be measured, and installs and fixes the fluorescence temperature measurement probe 1. The demodulation module 5 emits an excitation light source, which is transmitted to the fluorescence temperature measurement probe 1 through the optical cable 4. After stopping the transmission of the excitation light source, the feedback light emitted by the fluorescence temperature measurement probe 1 is transmitted to the demodulation module 5 through the optical cable 4. The demodulation module 5 demodulates the feedback light, converts it into an electrical signal, and connects it to the electrical interface 9 of the fluorescent optical fiber temperature collector B through the cable 6 and the electrical connector 7. The internal processor of the collector B processes, stores, and outputs the electrical signal to complete one temperature measurement.

[0038] The above embodiments are the preferred implementation solutions of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. An integrated fluorescence sensor and temperature measurement system, characterized in that: It includes a fluorescent optical fiber temperature collector (B) and several integrated fluorescent optical fiber temperature sensors (A); A plurality of electrical interfaces (9) are provided on one side of the fluorescent optical fiber temperature collector (B); The integrated fluorescent optical fiber temperature sensor (A) comprises a sensor body and a demodulation component, wherein the sensor body is used to measure temperature, and the demodulation component is used to demodulate the temperature measured by the sensor body and transmit an electrical signal. The integrated fluorescent optical fiber temperature sensor (A) is detachably connected to the fluorescent optical fiber temperature collector (B) via an electrical interface (9).

2. The integrated fluorescence sensor and temperature measurement system according to claim 1, characterized in that: The sensor body comprises a fluorescent temperature measuring probe (1), a temperature measuring optical fiber (2), a probe fixing part (3) and an optical cable (4); one end of the temperature measuring optical fiber (2) is fixedly connected to one side of the probe fixing part (3); the fluorescent temperature measuring probe (1) is arranged at one end of the temperature measuring optical fiber (2) away from the probe fixing part (3); and one end of the optical cable (4) is fixedly connected to the other side of the probe fixing part (3).

3. The integrated fluorescence sensor and temperature measurement system according to claim 2, characterized in that: The demodulation component comprises a demodulation module (5), a cable (6) and an electrical connector (7); the demodulation module (5) is fixedly connected to one end of the optical cable (4) away from the probe fixing part (3); one end of the cable (6) is fixedly connected to the demodulation module (5); the electrical connector (7) is fixedly connected to the other end of the cable (6); and the electrical connector (7) is detachably connected to the electrical interface (9).

4. The integrated fluorescence sensor and temperature measurement system according to claim 2, characterized in that: An external thread (301) is provided on a side of the probe fixing portion (3) close to the temperature measuring optical fiber (2).

5. The integrated fluorescence sensor and temperature measurement system according to claim 3, characterized in that: The demodulation module (5) is internally provided with a demodulation optical path and a demodulation circuit.

6. The integrated fluorescence sensor and temperature measurement system according to claim 1, characterized in that: The fluorescent optical fiber temperature collector (B) is internally provided with an integrated processor, a power module and a communication module.

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