Integrated fluorescent sensor and temperature measurement systemTechnical Field
The utility model relates to the technical field of fluorescent optical fiber temperature measurement, in particular to an integrated fluorescent sensor and a temperature measurement system.
Background
The temperature is an important environmental parameter in various fields, and the optical fiber temperature sensor has been fully developed and applied in the industries of electric power, medical treatment, semiconductors and the like due to the advantages of electromagnetic immunity, fire prevention, explosion prevention, high reliability and the like. The fluorescent optical fiber temperature sensor is a temperature sensor which is made of rare earth fluorescent substances serving as temperature sensing substances, and the related temperature measuring system carries out temperature demodulation based on the characteristic that the luminescence characteristic is linearly related to the temperature after the excitation of the rare earth fluorescent substances by the excitation light source.
At present, most of fluorescent optical fiber temperature measuring systems in the market are in a mode that a fluorescent optical fiber temperature sensor is connected with functional equipment through a transmission optical fiber, an optical module, a demodulation module, an acquisition display module, a power module, an external data interface and other devices are integrated in the functional equipment, the functional equipment emits an excitation light source, the excitation light source is transmitted to a photosensitive substance of the fluorescent optical fiber temperature sensor through the transmission optical fiber, after the excitation of the light source is stopped, a feedback light source emitted by the fluorescent substance is transmitted into the functional equipment through the transmission optical fiber to perform temperature demodulation, display and external output. It is noted that when the temperature sensor and the functional equipment are plugged and replaced through the optical fiber interface, the optical path structure is changed each time due to the change of the optical fiber butt joint, and the temperature measurement precision of the temperature measurement system is affected. If the temperature measuring system is made into a structure with a temperature sensor and functional equipment fixed integrally, the replacement flexibility of the temperature sensor is affected.
The defects of the temperature sensor and the functional equipment which are plugged and replaced through the optical fiber interface are as follows:
1. The temperature sensor and the demodulation module of the functional equipment are easy to have compatibility problem, the temperature can drift in a certain range every time when the temperature sensor is plugged in or out through the optical fiber interface, and the temperature measurement precision of the system is not high;
2. More interference and light source loss can be introduced through the plugging of the optical fiber interface, such as dirt, dust and water vapor of the optical interface of the sensor can cause the influence of an optical signal, and the temperature measurement accuracy is influenced;
3. And if the temperature sensor and the temperature measuring system connected with the functional equipment are in fault, the temperature sensor and the functional equipment are required to be overhauled or replaced respectively, so that the operation and maintenance cost and the time cost are increased.
Therefore, development of a fluorescent optical fiber temperature sensor and a temperature measuring system which can achieve flexibility of replacing the temperature sensor and simultaneously give consideration to temperature measuring precision is necessary.
Disclosure of utility model
1. Technical problem to be solved by the utility model
Aiming at the defects in the background technology, the utility model aims to provide an integrated fluorescent sensor and a temperature measuring system, wherein the temperature measuring system consists of a fluorescent optical fiber temperature acquisition instrument and a plurality of integrated fluorescent optical fiber temperature sensors, and has higher temperature measuring precision and temperature property.
2. Technical proposal
In order to achieve the above purpose, the present utility model provides the following technical solutions:
An integrated fluorescent sensor and a temperature measurement system comprise a fluorescent optical fiber temperature acquisition instrument and a plurality of integrated fluorescent optical fiber temperature sensors;
one side of the fluorescent optical fiber temperature acquisition instrument is provided with a plurality of electrical interfaces;
The integrated fluorescent optical fiber temperature sensor comprises a sensor body and a demodulation assembly, wherein the sensor body is used for measuring temperature, the demodulation assembly is used for demodulating the temperature measured by the sensor body and transmitting electric signals, and the integrated fluorescent optical fiber temperature sensor is detachably connected with a fluorescent optical fiber temperature acquisition instrument through an electric interface.
Preferably, the sensor body comprises a fluorescence temperature measurement probe, a temperature measurement optical fiber, a probe fixing part and an optical cable, wherein 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 one end of the temperature measurement optical fiber far 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.
Preferably, the demodulation assembly comprises a demodulation module, a cable and an electric connector, wherein the demodulation module is fixedly connected to one end of the optical cable, which is far away from the probe fixing part, one end of the cable is fixedly connected to the demodulation module, the electric connector is fixedly connected to the other end of the cable, and the electric connector is detachably connected to the electric interface.
Preferably, an external thread is arranged on one side of the probe fixing part, which is close to the temperature measuring optical fiber.
Preferably, a demodulation light path and a demodulation circuit are arranged in the demodulation module.
Preferably, an integrated processor, a power module and a communication module are arranged in the fluorescent optical fiber temperature acquisition instrument.
3. Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
(1) The utility model consists of a fluorescent optical fiber temperature acquisition instrument and a plurality of integrated fluorescent optical fiber temperature sensors, wherein the sensor body is permanently fixed with the demodulation module, one-to-one calibration is adopted, the temperature measurement precision is high, the optical signals of the temperature measurement probe are directly demodulated, the electric signals are output, the optical fiber loss is small, and the temperature measurement has high reliability.
(2) The integrated fluorescent optical fiber temperature sensor is connected with the fluorescent optical fiber temperature acquisition instrument through the electric interface, the temperature measurement system can replace the temperature sensor according to requirements, no optical path docking variation exists, the temperature measurement precision is not affected, and good interchangeability is achieved.
Drawings
FIG. 1 is a schematic diagram of an integrated fluorescence fiber optic temperature sensor of an integrated fluorescence sensor and temperature measurement system;
FIG. 2 is a schematic diagram of a fluorescent fiber temperature collector of an integrated fluorescent sensor and temperature measurement system;
fig. 3 is a schematic diagram of the system operating principle.
In the figure, an integrated fluorescent optical fiber temperature sensor, a fluorescent temperature measuring probe, a temperature measuring optical fiber, a probe fixing part, 301, external threads, 4, an optical cable, 5, a demodulation module, 6, an electric cable, 7, an electric connector, 8, a protective tail sleeve, a fluorescent optical fiber temperature acquisition instrument, and 9, an electric interface are shown.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Examples:
Referring to fig. 1-3, the embodiment provides an integrated fluorescence sensor and a temperature measurement system, which comprises a fluorescence fiber temperature acquisition instrument B and a plurality of integrated fluorescence fiber temperature sensors a, wherein one side of the fluorescence fiber temperature acquisition instrument B is provided with a plurality of electrical interfaces 9, the integrated fluorescence fiber temperature sensors a comprise a sensor body and a demodulation assembly, the sensor body is used for measuring temperature, the demodulation assembly is used for demodulating the temperature measured by the sensor body and transmitting electrical signals, the integrated fluorescence fiber temperature sensors a and the fluorescence fiber temperature acquisition instrument B are detachably connected through the electrical interfaces 9, the temperature measurement system is composed of the fluorescence fiber temperature acquisition instrument and the plurality of integrated fluorescence fiber temperature sensors, has higher temperature measurement precision and temperature performance, can replace the temperature sensors according to requirements, has no optical path docking variation, does not influence the temperature measurement precision, and has good interchangeability.
In this embodiment, as shown in fig. 1, the sensor body includes a fluorescent temperature measuring probe 1, a temperature measuring optical fiber 2, a probe fixing portion 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 portion 3, the fluorescent temperature measuring probe 1 is disposed at one end of the temperature measuring optical fiber 2 far away from the probe fixing portion 3, the fluorescent temperature measuring probe 1 is a portion where a rare earth fluorescent material is disposed at the tail end of the temperature measuring optical fiber 2, and one end of the optical cable 4 is fixedly connected to the other side of the probe fixing portion 3.
In this embodiment, as shown in fig. 1, an external thread 301 is provided on one side of the probe fixing portion 3 near the temperature measuring optical fiber 2, and when the temperature measurement is actually performed, the fluorescence temperature measuring probe 1 of each integrated fluorescence optical fiber temperature sensor a contacts with a temperature point to be measured, and the probe fixing portion 3 fixes the fluorescence temperature measuring probe 1 and the temperature object to be measured by the external thread 301, so that the installation is convenient.
In this embodiment, as shown in fig. 1, the demodulation assembly includes 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 far away from the probe fixing portion 3, the optical cable 4 is connected to an input end of the demodulation module 5, 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, the electrical connector 7 is detachably connected to the electrical interface 9, a demodulation light path and a demodulation circuit are arranged in the demodulation module 5, the demodulation module 5 emits an excitation light source to be transmitted to the fluorescent temperature measurement probe 1 through the optical cable 4, and receives feedback light returned by the fluorescent temperature measurement probe 1, converts a feedback light signal into an electrical signal, and transmits the electrical signal output by the demodulation module 5 to the fluorescent fiber temperature collector B through the electrical connector 7 connected to the other end of the cable 6, so that the sensor body and the demodulation assembly are permanently fixed, and the one-to-one calibration is adopted, and the interchangeability of the traditional temperature measurement system is also provided for the collection portion.
In this embodiment, as shown in fig. 1, the connection parts of the optical cable 4 and the demodulation module 5, the cable 6 and the demodulation module 5, and the cable 6 and the electrical connector 7 are all sleeved with the protection tail sleeve 8, and the protection tail sleeve 8 can tightly fix the tail parts of the optical cable 4 and the cable 6, prevent loosening or shifting due to the action of external force in the use process, and ensure stability and safety.
In this embodiment, as shown in fig. 1, an integrated processor, a power module and a communication module are disposed in the fluorescent fiber temperature acquisition instrument B, the power module and the communication module are respectively connected with the integrated processor, the integrated processor collects electrical signals transmitted from a plurality of electrical interfaces 9 and processes and stores the electrical signals to convert the electrical signals into temperature data, the communication module transmits the output data of the integrated processor to the outside, the power module provides power for the fluorescent fiber temperature acquisition instrument B, and in other embodiments, functional modules such as a display module, an alarm module and the like can be disposed in the fluorescent fiber temperature acquisition instrument B according to requirements.
The working principle is that when temperature measurement is actually carried out, a fluorescent temperature measuring probe 1 of each integrated fluorescent optical fiber temperature sensor A is contacted with a temperature point to be measured, a probe fixing part 3 is used for fixing the fluorescent temperature measuring probe 1 and an object to be measured in a threaded manner, the fluorescent temperature measuring probe 1 is fixedly installed, a demodulation module 5 is used for emitting an excitation light source, the excitation light source is transmitted to the fluorescent temperature measuring probe 1 through an optical cable 4, after the excitation light source is stopped from being transmitted, feedback light emitted by the fluorescent temperature measuring probe 1 is transmitted to the demodulation module 5 through the optical cable 4, the demodulation module 5 demodulates the feedback light, an electric signal is generated through conversion, the electric signal is connected to an electric interface 9 of a fluorescent optical fiber temperature acquisition instrument B through an electric cable 6 and an electric connector 7, and an internal processor of the acquisition instrument B is used for processing, storing and outputting the electric signal, so that one-time temperature measurement is completed.
The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.