Fluorescent optical fiber temperature sensor and working method thereof

Abstract

The invention relates to the technical field of fluorescent optical fiber temperature sensors, and discloses a fluorescent optical fiber temperature sensor, which comprises a host machine, a magnetic attraction base unit arranged on the surface of the host machine, and a charging module and a magnetic attraction module are arranged in the magnetic attraction base unit to realize a magnetic attraction function and an electric charging function; the wired connection unit is arranged on the surface of the host and comprises a detachable joint connected to the end part of the optical fiber; the split type magnetic attraction probe module comprises an annular permanent magnet array which is arranged at the tail part, is matched with the magnetic attraction module and can be adsorbed in the magnetic attraction base unit in a magnetic attraction manner; the optical fiber connector is arranged at the tail end, is matched with the detachable connector and is connected with an optical fiber through the detachable connector; the built-in first communication module realizes wireless connection with a host. By arranging the split type magnetic probe module, wired and wireless dual-mode switching can be achieved, and industrial-grade real-time performance is guaranteed through wired direct connection; and the wireless connection meets the requirement of mobile inspection.

Description

Technical Field

[0001] The present invention relates to the technical field of fluorescent optical fiber temperature sensors, and particularly to a fluorescent optical fiber temperature sensor and its working method. Background Art

[0002] The fluorescent optical fiber temperature measurement probe has advantages such as high temperature resistance, corrosion resistance, insulation, and anti-magnetic interference. The temperature sensor using the fluorescent optical fiber temperature measurement probe has broad application prospects in many fields such as oil-immersed transformer temperature measurement.

[0003] In the Chinese patent with the publication number CN 222318262 U, a fluorescent optical fiber temperature measurement probe, a temperature sensor, and a temperature measurement system are disclosed. The fluorescent optical fiber temperature measurement probe includes a tail handle provided with an insertion through hole; an insert core fixed to the tail handle, and the insert core is provided with a core hole communicating with the insertion through hole; an optical fiber having a sensing end, the sensing end passes through the insertion through hole and is inserted into the core hole, the sensing end has a terminal end face, and the terminal end face is located at the orifice position of the core hole; an outer sleeve tube fixedly connected to the tail handle, the outer sleeve tube is provided with a sleeve hole, and the insert core is inserted into the sleeve hole; a fluorescent member disposed in the sleeve hole and covering the terminal end face. It can ensure the flatness of the end of the optical fiber on the premise that the optical fiber is very thin, so as to realize the small-size design of the fluorescent optical fiber temperature measurement probe.

[0004] However, in the prior art, the probe is usually designed in a single working mode (fixed installation or hand-held and portable), and it cannot balance the flexibility and continuous monitoring requirements in complex scenarios. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that in the prior art, the probe is usually designed in a single working mode (fixed installation or hand-held and portable), and it cannot balance the flexibility and continuous monitoring requirements in complex scenarios. A fluorescent optical fiber temperature sensor and its working method are proposed, which can be switched between a wired mode and a wireless mode to meet the flexibility and continuous monitoring requirements in complex scenarios.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions: A fluorescent optical fiber temperature sensor, comprising: A main body, comprising: A magnetic base unit disposed on the surface of the main body, the magnetic base unit is internally provided with a charging module and a magnetic attraction module to realize the magnetic attraction function and the charging function; A wired connection unit disposed on the surface of the main body, the wired connection unit includes a detachable connector connected to the end of the optical fiber of the main body; A split magnetic probe module, comprising: An annular permanent magnet array disposed on the outer side of the tail, adapted to the magnetic attraction module, and can be adsorbed in the magnetic base unit by magnetic attraction; An optical fiber connector provided at the tail end is adapted to the detachable connector and is connected to the host optical fiber through the detachable connector. The built-in first communication module enables wireless connection with the host.

[0007] Preferably, the magnetic base unit includes a slot opened at the top of the host. The magnetic module is in a circular ring shape and is arranged above the inside of the slot, and the charging module is arranged at the bottom inside the slot.

[0008] Preferably, the wired connection unit includes a storage groove opened at the top of the host and a corrugated pipe installed inside the storage groove.

[0009] Preferably, one end of the corrugated pipe is fixedly connected to the bottom inside the storage groove, the other end of the corrugated pipe extends to the outside of the storage groove and is fixedly connected to the detachable connector, and the host optical fiber passes through the bottom of the storage groove and enters the storage groove movably and is connected to the detachable connector through the inside of the corrugated pipe.

[0010] Preferably, the detachable connector is connected to the optical fiber connector in a hot-pluggable manner, and the split magnetic probe module realizes optical fiber connection with the host optical fiber through the detachable connector and the optical fiber connector.

[0011] Preferably, a protective sleeve is arranged at the bottom of the split magnetic probe module. The protective sleeve is spirally connected to the thread at the bottom of the split magnetic probe module. A first charging terminal adapted to the charging module is arranged on the outside of the protective sleeve, a second charging terminal adapted to the first charging terminal is arranged on the outside of the split magnetic probe module, a storage battery is built in the split magnetic probe module, and the storage battery is electrically connected to the second charging terminal.

[0012] Preferably, the first communication module of the split magnetic probe module includes a Bluetooth module. In the host working mode, the split magnetic probe module is directly connected to the host, and in the handheld mode, it switches to Bluetooth module remote communication.

[0013] Preferably, a fiber optic storage cavity opened inside the host is arranged at the bottom of the storage groove. The host optical fiber is connected to the fiber optic storage cavity through a spiral spring. One end of the host optical fiber far from the detachable connector passes through the center position of the spiral spring and extends outside the fiber optic storage cavity and is sequentially connected to a photodetector and a signal processor arranged inside the host.

[0014] A working method of a fluorescence optical fiber temperature sensor adopts a fluorescence optical fiber temperature sensor and includes the following steps: Host working mode: Extend the corrugated pipe to the target length; Insert the detachable connector into the optical fiber connector at the bottom of the split magnetic probe module; In the connected state of the split magnetic adsorption probe module, the main unit is directly connected to the split magnetic adsorption probe module; Handheld mode: Remove the split magnetic adsorption probe module from the detachable connector, trigger the Bluetooth module and activate the split magnetic adsorption probe module. After separating the split magnetic adsorption probe module, the main unit's coiled spring automatically rewinds the excess main unit optical fiber into the storage cavity; In the handheld state, it is powered by a battery, and data is transmitted to the main unit through the Bluetooth module, and the temperature curve and alarm information are displayed in real time; The main unit's photodetector receives the fluorescence signal, calculates the fluorescence lifetime through the signal processor, and outputs the temperature value; Charging mode: Bring the split magnetic adsorption probe module close to the slot of the main unit's magnetic adsorption base unit. The annular permanent magnet array generates magnetic attraction with the magnetic adsorption module, guiding the split magnetic adsorption probe module to be inserted along the slot and adsorbed. A protective sleeve is installed at the bottom of the split magnetic adsorption probe module, and the first charging terminal on the protective sleeve contacts the charging module inside the main unit. The charging module, the first charging terminal, the second charging terminal, and the battery form an electrical connection, and the main unit charges the built-in battery of the magnetic adsorption probe module through a constant current power supply.

[0015] Compared with the prior art, the beneficial effects of the present invention are: Achieve efficient deployment: Magnetic adsorption coupling + bellows deformation enable rapid positioning of the probe, suitable for installation on curved surfaces and in narrow spaces.

[0016] Dual-mode seamless switching: The main unit direct connection mode ensures industrial-level real-time performance; the Bluetooth module (handheld mode) meets the needs of mobile inspection.

[0017] Intelligent fault tolerance: Fiber optic tension feedback to avoid signal interruption caused by mechanical shock. Description of the drawings

[0018] Figure 1 The front view of a fluorescence optical fiber temperature sensor proposed by the present invention; Figure 2 The cross-sectional view of the slot part of the main unit of a fluorescence optical fiber temperature sensor proposed by the present invention; Figure 3 The cross-sectional view of the storage groove part of the main unit of a fluorescence optical fiber temperature sensor proposed by the present invention; Figure 4 The schematic diagram of the split magnetic adsorption probe module of a fluorescence optical fiber temperature sensor proposed by the present invention; Figure 5 The connection schematic diagram of the split magnetic adsorption probe module and the main unit module of a fluorescence optical fiber temperature sensor proposed by the present invention.

[0019] In the figure: 1. Main unit; 2. Magnetic adsorption base unit; 3. Charging module; 4. Magnetic adsorption module; 5. Main unit optical fiber; 6. Detachable connector; 7. Split magnetic adsorption probe module; 8. Ring permanent magnet array; 9. Optical fiber connector; 10. First communication module; 11. Slot; 12. Storage slot; 13. Bellows; 14. Charging connector; 15. Second communication module; 16. Control processor; 17. Protective cover; 18. First charging terminal; 19. Second charging terminal; 20. Bluetooth module; 21. Charging interface; 22. Optical fiber storage cavity; 23. Torsion spring; 24. Photoelectric detector; 25. Signal processor. Detailed implementation mode

[0020] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention will be described in detail below with reference to specific drawings.

[0021] It should be noted that all the terms indicating directionality and positional indication in the present invention, such as: "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "inside", "outside", "top", "bottom", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection situation between components in a certain specific state (as shown in the drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0024] Refer toFigures 1 - 5 , a fluorescence optical fiber temperature sensor, comprising: A main unit 1, comprising: A magnetic base unit 2 arranged on the main unit 1, the magnetic base unit 2 internally provided with a charging module 3 and a magnetic attraction module 4 to realize the magnetic attraction function and the charging function; A wired connection unit arranged on the main unit 1, the wired connection unit comprising a detachable connector 6 connected to the end of the main unit optical fiber 5; A split magnetic probe module 7, comprising: An annular permanent magnet array 8 arranged on the outer side of the tail, adapted to the magnetic attraction module 4, and can be adsorbed in the magnetic base unit 2 by magnetic attraction. Of course, in addition to installing the magnetic attraction module 4 on the main unit 1, the magnetic attraction module 4 can also be installed on the surface of the object to be measured, and adsorbed by the annular permanent magnet array 8 to complete the installation of the split magnetic probe module 7 on the side to be measured, realizing magnetic attraction type temperature monitoring; An optical fiber connector 9 arranged at the tail end, adapted to the detachable connector 6, and connected to the main unit optical fiber 5 by realizing connection with the detachable connector 6; A built-in first communication module 10 to realize wireless connection with the main unit 1; When the device is in use, the magnetic attraction module 4 and the charging module 3 are integrated in the same slot 11 to realize non-contact rapid adsorption and synchronous charging. When the split magnetic probe module 7 is adsorbed, it contacts the charging module 3, and there is no plugging and unplugging wear during the whole process. Moreover, this method cooperates with the wired connection unit to realize the dual-mode switching function of the temperature sensor, that is, it can be connected to the wired connection unit to realize the optical fiber direct connection mode to ensure industrial-level real-time performance; when the split magnetic probe module 7 is used alone, it is connected to the main unit 1 through the Bluetooth module 20 to meet the needs of mobile inspection.

[0025] As a preferred example of the present application, the magnetic base unit 2 comprises a slot 11 opened on the top of the main unit 1, the magnetic attraction module 4 is in a circular ring shape and is arranged at a position close to the upper part inside the slot 11, and the charging module 3 is arranged at a position close to the bottom inside the slot 11. Since the circular ring-shaped magnetic attraction module 4 is arranged above the slot 11, a magnetic force priority guiding effect is formed to ensure that when the split magnetic probe module 7 falls, it is first attracted by the magnetic force to be centered and then precisely contacts the bottom charging module 3.

[0026] As a preferred example of the present application, the wired connection unit comprises a storage groove 12 opened on the top of the main unit 1 and a corrugated pipe 13 installed inside the storage groove 12. The corrugated pipe 13 provides universal bending and anti-fatigue characteristics, and the deformation of the corrugated pipe 13 can realize the rapid positioning of the split magnetic probe module 7, adapting to the installation on curved surfaces and narrow spaces.

[0027] As a preferred example of the present application, one end of the corrugated pipe 13 is fixedly connected to the bottom inside the storage groove 12, and the other end of the corrugated pipe 13 extends to the outside of the storage groove 12 and is fixedly connected to the detachable joint 6. The host optical fiber 5 passes through the bottom of the storage groove 12 and enters the storage groove 12 movably, and is connected to the detachable joint 6 through the inside of the corrugated pipe 13. One end of the corrugated pipe 13 is fixed to the bottom of the storage groove 12, and the other end extends to the outside. The split magnetic probe module 7 is connected through the optical fiber joint 9 and the detachable joint 6 to form a closed optical fiber 5 channel, preventing bending damage and pollution caused by the exposure of the optical fiber 5. In addition, the real-time requirement of industrial monitoring can be ensured.

[0028] As a preferred example of the present application, the detachable joint 6 and the optical fiber joint 9 are connected in a hot-pluggable manner. The split magnetic probe module 7 is optically connected to the host optical fiber 5 through the detachable joint 6 and the optical fiber joint 9. The detachable joint 6 and the optical fiber joint 9 adopt LC-type optical fiber connectors in the prior art, which are respectively an LC-type optical fiber connector plug and a jack. The signal transmission between the host optical fiber 5 and the split magnetic probe module 7 is realized through physical contact in a hot-pluggable form. In addition, in order to ensure the power supply of the split magnetic probe module 7 in the wired mode, the split magnetic probe module 7 is also provided with a charging joint 14, and the top of the corrugated pipe 13 is provided with a charging interface 21. The charging interface 21 is connected to the power module in the host 1 through a wire (the wire is reserved with a certain length and can be connected to the corrugated position of the corrugated pipe 13 to adapt to the length change of the corrugated pipe 13). When the detachable joint 6 and the optical fiber joint 9 are connected, the charging joint 14 and the charging interface 21 are docked simultaneously. The charging joint 14 is electrically connected to the internal battery of the split magnetic probe module 7 to complete the power supply of the split magnetic probe module 7 in the wired mode.

[0029] As a preferred example of the present application, a protective cover 17 is provided at the bottom of the split magnetic probe module 7. The protective cover 17 is spirally connected to the thread at the bottom of the split magnetic probe module 7. A first charging terminal 18 adapted to the charging module 3 is provided on the outside of the protective cover 17. A second charging terminal 19 adapted to the first charging terminal 18 is provided on the outside of the split magnetic probe module 7. The split magnetic probe module 7 is internally provided with a battery, and the battery is electrically connected to the second charging terminal 19. The spirally connected protective cover 17 can cover the second charging terminal 19 at the bottom of the split magnetic probe module 7 and can isolate the intrusion of dust and water vapor when used in the wireless mode, and is removed in the working mode of the host 1 to facilitate the connection of the detachable joint 6 and the optical fiber joint 9. The charging module 3, the first charging terminal 18, and the second charging terminal 19 all adopt gold-plated elastic sheets to facilitate the docking of the terminals. In addition, it should be noted here that the protective cover 17 is designed so that the first charging terminal 18 and the second charging terminal 19 are just docked after being rotated in place.

[0030] As a preferred example of the present application, the first communication module 10 of the split magnetic probe module 7 includes a Bluetooth module 20. A second communication module 15 and a control processor 16 adapted to the first communication module 10 are provided in the host 1. The first communication module 10 and the second communication module 15 transmit the monitoring data, and after being processed by the control processor 16, it is converted into real-time data and displayed on the display screen (not shown in the figure) of the host 1, or transmitted to the mobile terminal through the 4G module and displayed on the mobile phone. In the host 1 mode, the split magnetic probe module 7 is directly connected to the host optical fiber 5, and in the handheld mode, it is switched to the Bluetooth module 20 for remote transmission; Bluetooth transmission in the handheld mode can meet the needs of mobile inspection.

[0031] As a preferred example of the present application, a fiber optic storage cavity 22 opened inside the host 1 is provided at the bottom of the storage groove 12. The fiber optic 5 is connected in the fiber optic storage cavity 22 through a torsion spring 23. One end of the fiber optic 5 far from the detachable joint 6 penetrates through the center of the torsion spring 23 to the outside of the fiber optic storage cavity 22 and is sequentially connected to a photodetector 24 and a signal processor 25 provided in the host 1. The pre-tightening force of the torsion spring 23 dynamically adjusts the winding and unwinding tension of the fiber optic 5 to prevent micro-bending loss caused by over-tightening or winding caused by over-loosening. When storing, the fiber optic 5 is spirally stacked, and the bending stress is evenly distributed. The data collected by the probe is sent to the photodetector 24 and the signal processor 25 through the fiber optic 5 to realize temperature data analysis. After the data analysis, it is sent to the display terminal (i.e., the display screen, mobile phone) through the control processor 16.

[0032] This embodiment also proposes a working method of the fluorescence fiber optic temperature sensor, including the following steps: Charging mode: Bring the split magnetic probe module 7 close to the slot 11 of the magnetic base unit 2 of the host 1. The annular permanent magnet array 8 and the magnetic attraction module 4 generate magnetic attraction force, guiding the split magnetic probe module 7 to be accurately adsorbed in place along the guiding ribs of the slot 11. The Hall sensor detects the in-place signal and triggers the green LED indicator.

[0033] Charging start: The second charging terminal 19 at the bottom of the split magnetic probe module 7 contacts the charging module 3 through the first charging terminal 18 on the protective sleeve 17, and the host 1 charges the built-in battery of the split magnetic probe module 7 through a constant current power supply (5V / 2A).

[0034] Host 1 working mode: Host optical fiber 5 connection: Extend the corrugated pipe 13 to the target length; Insert the detachable joint 6 into the fiber optic connector 9 at the bottom of the split magnetic probe module 7; When the split magnetic probe module 7 is in the connected state, the host 1 is directly connected to the split magnetic probe module 7; The optoelectronic detector 24 of the host 1 receives the fluorescence signal, and the signal processor 25 calculates the fluorescence lifetime.

[0035] Handheld mode: Detach the split magnetic probe module 7 from the detachable joint 6 and trigger the activation of the Bluetooth module 20; In the handheld state, the battery powers the device (with an 8-hour battery life), and the Bluetooth transmits data to the host 1. The host can connect to a mobile terminal (such as a mobile phone / tablet) to display the temperature curve and alarm information in real time; Among them, after the split magnetic probe module 7 is detached from the detachable joint 6, the retractable spring 23 of the host 1 automatically rewinds the excess host optical fiber 5 into the storage cavity. The bending radius of the host optical fiber 5 is ≥30 mm to avoid microbending loss.

[0036] Compared with the prior art, the present invention, through the setting of the host 1 and the split magnetic probe module 7, can achieve non-contact rapid adsorption and synchronous charging between the split magnetic probe module 7 and the host 1. When the split magnetic probe module 7 is adsorbed, it contacts the charging module 3, and there is no plugging and unplugging wear throughout the process. Moreover, this method, in combination with the wired connection unit, realizes the dual-mode switching function of the temperature sensor, that is, the split magnetic probe module 7 can be selected to connect to the wired connection unit to achieve the wired direct connection mode, ensuring industrial-grade real-time performance; while using the split magnetic probe module 7 alone and connecting it to the host 1 via the Bluetooth module 20 meets the requirements of mobile patrol inspection.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A fluorescence optical fiber temperature sensor, characterized in that: Comprising: A main unit (1), comprising: A magnetic base unit (2) disposed on the surface of the main unit (1), the magnetic base unit (2) being built-in with a charging module (3) and a magnetic attraction module (4) to achieve magnetic attraction function and electric charging function; A wired connection unit disposed on the surface of the main unit (1), the wired connection unit comprising a detachable connector (6) connected to the end of the main unit optical fiber (5); A split magnetic probe module (7), comprising: An annular permanent magnet array (8) disposed on the outer side of the tail, adapted to the magnetic attraction module (4), and can be adsorbed in the magnetic base unit (2) by magnetic attraction; An optical fiber connector (9) disposed at the tail end, adapted to the detachable connector (6), and connected to the main unit optical fiber (5) by connecting with the detachable connector (6); A built-in first communication module (10) to achieve wireless connection with the main unit (1).

2. The fluorescence optical fiber temperature sensor according to claim 1, characterized in that: The magnetic base unit (2) includes a slot (11) opened on the top of the main unit (1), the magnetic attraction module (4) is circular ring-shaped and disposed above the inside of the slot (11), and the charging module (3) is disposed at the bottom inside the slot (11).

3. The fluorescence optical fiber temperature sensor according to claim 2, wherein: The wired connection unit includes a storage groove (12) opened on the top of the main unit (1) and a corrugated pipe (13) installed inside the storage groove (12).

4. The fluorescence optical fiber temperature sensor according to claim 3, wherein: One end of the corrugated pipe (13) is fixedly connected to the bottom inside the storage groove (12), the other end of the corrugated pipe (13) extends to the outside of the storage groove (12) and is fixedly connected to the detachable connector (6), and the main unit optical fiber (5) passes through the bottom of the storage groove (12) and enters the storage groove (12) movably, and is connected to the detachable connector (6) through the inside of the corrugated pipe (13).

5. The fluorescence optical fiber temperature sensor according to claim 4, characterized in that: The detachable connector (6) and the optical fiber connector (9) are connected in a hot-pluggable manner, and the split magnetic probe module (7) is fiber-connected to the main unit optical fiber (5) through the detachable connector (6) and the optical fiber connector (9).

6. The fluorescence optical fiber temperature sensor according to claim 5, wherein: A protective sleeve (17) is disposed at the bottom of the split magnetic probe module (7), and the protective sleeve (17) is screwed to the thread at the bottom of the split magnetic probe module (7).

7. A fluorescence optical fiber temperature sensor according to claim 6, characterized in that: A first charging terminal (18) adapted to the charging module (3) is disposed on the outer side of the protective sleeve (17), a second charging terminal (19) adapted to the first charging terminal (18) is disposed on the outer side of the split magnetic probe module (7), and a storage battery is built in the split magnetic probe module (7), and the storage battery is electrically connected to the second charging terminal (19).

8. A fluorescent optical fiber temperature sensor according to claim 7, characterized in that: The first communication module (10) of the split magnetic probe module (7) includes a Bluetooth module (20). In the working mode of the main unit (1), the split magnetic probe module (7) is directly connected to the main unit (1), and in the hand-held mode, it switches to remote communication of the Bluetooth module (20).

9. The fluorescence optical fiber temperature sensor according to claim 8, wherein: The bottom of the storage groove (12) is provided with an optical fiber storage cavity (22) opened inside the host (1). Inside the optical fiber storage cavity (22), the host optical fiber (5) is connected by a spiral spring (23). One end of the host optical fiber (5) far from the detachable connector (6) passes through the center position of the spiral spring (23) to the outside of the optical fiber storage cavity (22) and is sequentially connected to a photodetector (24) and a signal processor (25) arranged inside the host (1).

10. A working method of a fluorescent optical fiber temperature sensor, which uses a fluorescent optical fiber temperature sensor according to any one of claims 1-9, and is characterized in that: It includes the following steps: Working mode of the host (1): Extend the corrugated pipe (13) to the target length; Insert the detachable connector (6) into the optical fiber connector (9) at the bottom of the split magnetic probe module (7); When the split magnetic probe module (7) is in the connected state, the host (1) is directly connected to the split magnetic probe module (7); Handheld mode: Detach the split magnetic probe module (7) from the detachable connector (6), trigger the Bluetooth module (20) and activate the split magnetic probe module (7). After separating the split magnetic probe module (7), the spiral spring (23) of the host (1) automatically rewinds the redundant host optical fiber (5) into the storage cavity; In the handheld state, it is powered by a battery, and data is transmitted to the host (1) through the Bluetooth module (20), and the temperature curve and alarm information are displayed in real time; The photodetector (24) of the host (1) receives the fluorescence signal, calculates the fluorescence lifetime through the signal processor (25), and outputs the temperature value; Charging mode: Bring the split magnetic probe module (7) close to the slot (11) of the magnetic adsorption base unit (2) of the host (1). The annular permanent magnet array (8) and the magnetic adsorption module (4) generate magnetic attraction force to guide the split magnetic probe module (7) to be inserted along the slot (11) and adsorbed. A protective sleeve (17) is installed at the bottom of the split magnetic probe module (7). The first charging terminal (19) on the protective sleeve (17) contacts the charging module (3) inside the host (1). The charging module (3), the first charging terminal (18), the second charging terminal (19), and the battery form an electrical connection, and the host (1) charges the built-in battery of the magnetic probe module (7) through a constant current power supply.

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