Optical fiber temperature measuring device
By intensively arranging the temperature measuring units and fluorescent fiber sensors of the fiber optic temperature measurement device in the silo, the problem that traditional manual temperature measurement cannot reflect the temperature changes inside the silo in real time is solved, and the internal temperature of the silo is meticulously monitored and processed in real time is realized, the accuracy and accuracy of temperature measurement are improved, and temperature abnormalities are discovered and dealt with in a timely manner, reducing the risk of food loss.
Patent Information
- Application Number
- CN202422433491.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-10-09
AI Technical Summary
Traditional silo temperature measurement methods rely on manual handheld thermometers, which cannot reflect the temperature changes inside the silo in real time, especially ignore the temperature changes in the bottom and deep grains of the silo, resulting in temperature abnormalities that may not be discovered in time, increasing the risk of grain loss.
An optical fiber temperature measurement device is designed, including at least two temperature measurement units arranged axially spaced along the silo, and a fluorescent fiber sensor and central control unit are used to realize fine monitoring and real-time processing of the internal temperature of the silo.
By intensively arranging the temperature measurement unit and the fluorescent fiber sensor, it can capture more subtle temperature changes, improve the accuracy and accuracy of temperature measurement, and timely detect and deal with temperature abnormalities through real-time processing of the central control unit and reminder of the alarm module, and reduce the risk of food loss.
Smart Images
Figure CN222895814U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of temperature measurement, in particular to an optical fiber temperature measuring device. Background Art
[0002] In modern grain storage and management, silos are efficient and large-capacity storage facilities, and the temperature control of their internal environment is particularly important. The storage quality of grain is closely related to environmental factors such as the temperature in the silo. Therefore, accurate temperature monitoring and control have become key measures to ensure food safety and prevent problems such as mildew, pests and deterioration. However, the traditional silo temperature measurement method mainly relies on manual handheld thermometers to enter the silo for measurement. This method has many limitations, especially in terms of the comprehensiveness and accuracy of temperature monitoring. When measuring the temperature manually, operators can usually only stand on the top of the silo and use thermometers to measure the surface of the silo or easily accessible areas. This method ignores the temperature changes of the bottom of the silo and the deep grain, and the bottom is often an area with large temperature fluctuations and prone to mildew. Moreover, manual temperature measurement can only be carried out periodically, and cannot reflect the changes in the temperature inside the silo in real time. This lag may lead to the failure to detect and deal with temperature anomalies in a timely manner, thereby increasing the risk of grain loss.
[0003] Therefore, in view of this, the inventor proposes an optical fiber temperature measurement device to solve the above technical problems. Utility Model Content
[0004] The utility model aims to provide an optical fiber temperature measuring device to solve the problem that the traditional silo adopts manual temperature measurement and cannot reflect the temperature change inside the silo in real time.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] An optical fiber temperature measuring device is used to be installed in a silo, and the optical fiber temperature measuring device comprises:
[0007] At least two temperature measuring units, each of which is arranged at intervals along the axial direction of the silo;
[0008] The temperature measurement unit includes a plurality of connecting strips and optical fiber jumpers, each of the connecting strips is circumferentially distributed in the silo and fixed to the inner wall of the silo, and the optical fiber jumpers are mounted on each of the connecting strips;
[0009] A plurality of fluorescent optical fiber sensors are connected to the optical fiber jumper, and each of the fluorescent optical fiber sensors surrounds the inner wall of the silo and is fixed to the inner wall of the silo;
[0010] It also includes a central control unit and an alarm module. The optical fiber jumper is connected to the central control unit, and the central control unit is connected to the alarm module.
[0011] Furthermore, a through hole is provided in the connecting strip, and the optical fiber jumper is inserted into the through hole.
[0012] Furthermore, it also includes a display, which is connected to the central control unit and is used to display the temperature value of each temperature measuring unit.
[0013] Furthermore, a plurality of vertically arranged installation grooves are provided in the silo, and the installation grooves are distributed at intervals along the inner wall of the silo, and each of the connecting strips is engaged in one of the installation grooves.
[0014] Furthermore, two adjacent temperature measuring units are arranged in parallel, and the interval between the two temperature measuring units is no greater than 20 cm.
[0015] Further, the central control unit includes an optical pulse module, a DTS module and an OTDR module, and the optical pulse module, the DTS module and the OTDR module are all connected to the optical fiber jumper;
[0016] The optical pulse module is used to transmit optical pulses to the fluorescent optical fiber sensor, and the DTS module is used to receive scattered light from the fluorescent optical fiber sensor and convert the optical information into temperature information.
[0017] Furthermore, a control processing module is provided in the central control unit, and the optical pulse module, the DTS module and the OTDR module are all connected to the control processing module.
[0018] Furthermore, the optical fiber temperature measuring device also includes a mobile terminal;
[0019] The central control unit also includes a network module, and the network module is connected to the control processing module;
[0020] The network module is connected to the mobile terminal by wire or wirelessly;
[0021] The temperature information of the temperature measuring unit is transmitted to the mobile terminal through the network module.
[0022] Furthermore, the fluorescent optical fiber sensor is a single-mode optical fiber sensor or a multi-mode optical fiber sensor.
[0023] Furthermore, the alarm module is provided with a buzzer.
[0024] Beneficial effects of the utility model:
[0025] 1. By densely arranging temperature measuring units in the silo (with intervals no greater than 20 cm) and using fluorescent fiber optic sensors to precisely monitor the temperature inside the silo, this dense arrangement with intervals no greater than 20 cm can capture more subtle temperature changes, thereby greatly improving the precision and accuracy of temperature measurement; at the same time, the DTS module of the central control unit can process the Raman scattering effect stimulated by light pulses in real time, and quickly infer the temperature information of each point on each temperature measuring unit, providing timely and reliable data support for the safe storage of grain in the silo.
[0026] 2. This device integrates components such as the central control unit, alarm module and display. The central control unit is responsible for receiving temperature information from each fluorescent fiber sensor, and processing and analyzing it. Once an abnormal temperature is detected (such as exceeding the preset threshold), the alarm module will sound an alarm to remind the operator to take timely measures, which not only reduces the burden of manual monitoring, but also greatly improves the efficiency and accuracy of monitoring, and effectively avoids food losses or safety accidents caused by manual negligence or delays. At the same time, the display shows the temperature value of each temperature measurement unit in real time, providing operators with an intuitive and clear temperature distribution, so that they can quickly understand the temperature status of the grain in the silo and make corresponding processing decisions.
[0027] Other advantages, objectives and features of the present application will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present application. The objectives and other advantages of the present application can be achieved and obtained through the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a partial structural schematic diagram of the optical fiber temperature measuring device of the utility model when it is installed in a silo;
[0029] Figure 2 It is a partial structural schematic diagram of the optical fiber temperature measuring device of the utility model;
[0030] Figure 3 This is a connection control schematic diagram of the optical fiber temperature measuring device of the utility model.
[0031] Among them, there are a silo 1, a mounting groove 11, a temperature measuring unit 2, a connecting strip 21, a through hole 211, an optical fiber jumper 22, and a fluorescent optical fiber sensor 23. DETAILED DESCRIPTION
[0032] The following will describe the implementation of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.
[0033] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.
[0034] This embodiment provides an optical fiber temperature measuring device for installation in a silo, such as Figure 1 , Figure 2 and Figure 3 As shown, the optical fiber temperature measuring device includes at least two temperature measuring units 2, and each temperature measuring unit 2 is arranged at intervals along the axial direction of the silo 1. In the present embodiment, the temperature measuring unit 2 extends from the top of the silo 1 to the bottom of the silo 1; further, along the axial direction of the silo 1, two adjacent temperature measuring units 2 are arranged in parallel, and the interval between the two temperature measuring units 2 is not higher than 20 cm. By densely arranging the temperature measuring units 2 (with an interval of not more than 20 cm), the internal temperature of the silo 1 can be finely monitored, which facilitates the capture of more subtle temperature changes, thereby improving the precision and accuracy of temperature measurement.
[0035] The temperature measuring unit 2 includes a plurality of connecting strips 21 and optical fiber jumpers 22. Each connecting strip 21 is circumferentially distributed in the silo 1 and fixed to the inner wall of the silo 1. The optical fiber jumpers 22 are arranged on each connecting strip 21. Further, as Figure 1 As shown, a plurality of vertically arranged installation grooves 11 are provided in the silo 1, and the installation grooves 11 are distributed at intervals. Specifically, the connection can be made by welding or bolting to fix the connecting strip 21 in the installation groove 11.
[0036] like Figure 2 As shown, a through hole 211 is opened in the connecting strip 21 , and the optical fiber jumper 22 is passed through the through hole 211 . The optical fiber jumper 22 is installed on the inner wall of the silo 1 by fixing the connecting strip 21 .
[0037] like Figure 1As shown, a plurality of fluorescent fiber optic sensors 23 are connected to the optical fiber jumper 22, and the fluorescent fiber optic sensors 23 surround the inner wall of the silo 1 and are fixed to the inner wall of the silo 1; it should be noted that the plurality of fluorescent fiber optic sensors 23 in the same temperature measuring unit 2 are installed at the same height on the silo 1, ensuring that the fluorescent fiber optic sensors 23 can be evenly distributed along the circumferential direction of the silo 1, so as to facilitate comprehensive temperature monitoring of the grain in the silo 1 at the same height.
[0038] The fluorescent optical fiber sensor 23 is a single-mode optical fiber sensor or a multi-mode optical fiber sensor. In this embodiment, the fluorescent optical fiber sensor 23 is preferably a single-mode optical fiber sensor, such as a multi-channel DTS type optical fiber temperature sensor.
[0039] It also includes a central control unit and an alarm module. The central control unit is responsible for receiving temperature information from each fluorescent optical fiber sensor 23, and processing and analyzing it. The optical fiber jumper 22 is connected to the central control unit, and the central control unit is connected to the alarm module. A buzzer is provided on the alarm module.
[0040] Furthermore, the central control unit includes a control processing module, an optical pulse module, a DTS (distributed temperature sensing) module and an OTDR (optical time domain reflectometry) module, the optical pulse module, the DTS module and the OTDR module are all connected to the control processing module, and the optical pulse module, the DTS module and the OTDR module are all connected to the optical fiber jumper 22; in the central control unit, the optical pulse module, the DTS module, the OTDR module and the control processing module work together to achieve accurate monitoring and control of the optical fiber and its surrounding environment. The optical pulse module is used to emit optical pulses to the fluorescent optical fiber sensor 23, and the DTS module is used to receive scattered light from the fluorescent optical fiber sensor 23, and the optical information can be converted into temperature information through the module.
[0041] Furthermore, the DTS module receives light pulses from the light pulse module, and uses these pulses to stimulate the Raman scattering effect; specifically, the light pulse module is responsible for generating and sending short pulse light signals, and these light pulses are emitted into the optical fiber core of the optical fiber jumper 22 at a certain time interval (such as milliseconds or shorter); when the light pulse is transmitted along the optical fiber core in the optical fiber jumper 22, various types of scattering will be generated, among which Raman scattering has a certain proportional functional relationship with temperature. The DTS module uses the Raman scattering effect in the optical fiber core to detect the change in the intensity of the scattered light, and can infer the temperature information of each point on the optical fiber jumper 22, thereby achieving the purpose of temperature detection in the silo 1.
[0042] Principle: If part of the light energy is converted into thermal vibration, then a light with a longer wavelength than the light source will be emitted. If part of the thermal vibration is converted into light energy, then a light with a shorter wavelength than the light source will be emitted. Since the energy of light energy converted into thermal vibration is small and can be ignored, the intensity of the light with a shorter wavelength changes with the temperature. The ratio of the intensity of the light with a shorter wavelength to the light with the wavelength of the light source provides a functional relationship with temperature. The DTS module monitors the external temperature change by measuring the change in the intensity ratio of the light with a shorter wavelength to the light with the wavelength of the light source.
[0043] The OTDR module evaluates transmission characteristics and locates abnormal temperature points by sending optical pulses into the optical fiber jumper 22 and utilizing reflection and scattering signals generated when these pulses are transmitted in the optical fiber core of the optical fiber jumper 22 .
[0044] The OTDR module can also evaluate transmission characteristics and locate abnormal temperature points by receiving optical pulses from the optical pulse module and utilizing reflection and scattering signals generated when these pulses are transmitted in the optical fiber core of the optical fiber jumper 22 .
[0045] The control and processing module is the core of the entire system. It is responsible for receiving data from the DTS module and OTDR module, and performing processing, analysis and decision-making. It can process the collected data in real time according to preset algorithms and rules, and output corresponding control instructions.
[0046] The control processing module performs bidirectional communication with the DTS module and the OTDR module, receives monitoring data sent by them, and sends control instructions to adjust the emission parameters of the optical pulse module.
[0047] As a preferred implementation, this embodiment further includes a display, which is connected to the control processing module of the central control unit. The display can be used to display the temperature value of each temperature measuring unit 2.
[0048] As a preferred embodiment, the optical fiber temperature measuring device also includes a mobile terminal. In this embodiment, the mobile terminal is preferably a mobile phone; the central control unit also includes a network module, which is connected to the control processing module; the network module is connected to the mobile terminal by wire or wirelessly, and in this embodiment, the network module and the mobile terminal are connected by wire; the temperature information of the temperature measuring unit 2 is transmitted to the mobile terminal through the network module; it should be noted that transmitting information to the mobile terminal through the network module is a technology well known to technicians in the relevant technical field, and will not be elaborated in this embodiment.
[0049] When the utility model is implemented, the temperature measuring units 2 are arranged at intervals along the axial direction of the silo 1, and two adjacent temperature measuring units 2 are arranged in parallel, with an interval of no more than 20 cm. The optical pulse module emits optical pulses to the fluorescent optical fiber sensor 23, and the DTS module receives the optical pulses from the optical pulse module and uses these pulses to excite the Raman scattering effect. When the optical pulses are transmitted along the optical fiber core, the intensity of the generated Raman scattered light has a functional relationship with the temperature. The DTS module detects the change in the intensity of this scattered light and infers the temperature information of each point on the optical fiber jumper 22; the OTDR module sends optical pulses to the optical fiber jumper 22, and measures the reflection and scattering signals generated when these pulses are transmitted in the optical fiber core. By analyzing these signals, the OTDR module evaluates the abnormal temperature of each temperature measuring unit 2 in the silo 1, and further ensures the accurate monitoring of the temperature change in the silo 1. The display is used to display the temperature value of each temperature measuring unit 2 in real time, so that the operator can intuitively understand the temperature status of the grain in the silo 1.
[0050] The alarm module is provided with a buzzer. When an abnormal temperature is detected (such as exceeding a preset threshold), an alarm is sounded to remind the operator to take timely measures. The module has a compact structure and strong practicality, and can automatically monitor the temperature in real time, thus solving the problem that the traditional silo 1 uses manual temperature measurement and cannot reflect the temperature changes inside the silo 1.
[0051] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by a person skilled in the art based on the present invention is within the protection scope of the present invention.
Claims
1. An optical fiber temperature measuring device for installation in a silo (1), characterized in that: The optical fiber temperature measuring device includes: at least two temperature measuring units (2), each of the temperature measuring units (2) being arranged at intervals along the axial direction of the silo (1); The temperature measuring unit (2) comprises a plurality of connecting strips (21) and optical fiber jumpers (22), each of the connecting strips (21) being distributed in a circular pattern inside the silo (1) and fixed to the inner wall of the silo (1), and the optical fiber jumpers being mounted on each of the connecting strips (21); A plurality of fluorescent optical fiber sensors (23) are connected to the optical fiber jumper, and each of the fluorescent optical fiber sensors (23) surrounds the inner wall of the silo (1) and is fixed to the inner wall of the silo (1); It also comprises a central control unit and an alarm module, the optical fiber jumper (22) is connected to the central control unit, and the central control unit is connected to the alarm module.
2. The optical fiber temperature measuring device according to claim 1, characterized in that: The connecting strip (21) is provided with a through hole (211), and the optical fiber jumper (22) is inserted into the through hole (211).
3. The optical fiber temperature measuring device according to claim 2, characterized in that: It also comprises a display, which is connected to the central control unit and is used to display the temperature value of each temperature measuring unit (2).
4. The optical fiber temperature measuring device according to claim 3, characterized in that: A plurality of vertically arranged installation grooves (11) are provided in the silo (1), and the installation grooves (11) are spaced apart along the inner wall of the silo (1), and each of the connecting strips (21) is engaged in one of the installation grooves (11).
5. The optical fiber temperature measuring device according to claim 4, characterized in that: Two adjacent temperature measuring units (2) are arranged in parallel, and the interval between the two temperature measuring units (2) is no greater than 20 cm.
6. The optical fiber temperature measuring device according to claim 1, characterized in that: The central control unit comprises an optical pulse module, a DTS module and an OTDR module, and the optical pulse module, the DTS module and the OTDR module are all connected to the optical fiber jumper (22); The optical pulse module is used to transmit optical pulses to the fluorescent optical fiber sensor (23), and the DTS module is used to receive scattered light from the fluorescent optical fiber sensor (23) and convert the optical pulse information into temperature information.
7. The optical fiber temperature measuring device according to claim 6, characterized in that: A control processing module is arranged in the central control unit, and the optical pulse module, the DTS module and the OTDR module are all connected to the control processing module.
8. The optical fiber temperature measuring device according to claim 7, characterized in that: The optical fiber temperature measuring device also includes a mobile terminal; The central control unit also includes a network module, and the network module is connected to the control processing module; The network module is connected to the mobile terminal by wire or wirelessly; The temperature information of the temperature measuring unit (2) is transmitted to the mobile terminal via the network module.
9. The optical fiber temperature measuring device according to any one of claims 1 to 8, characterized in that: The fluorescent optical fiber sensor (23) is a single-mode optical fiber sensor or a multi-mode optical fiber sensor.
10. The optical fiber temperature measuring device according to claim 9, characterized in that: The alarm module is provided with a buzzer.