Multi-channel extensible fluorescent optical fiber thermodetector

Abstract

The utility model discloses a multichannel extensible fluorescent optical fiber thermodetector, and belongs to the technical field of temperature measurement. A multi-channel extensible fluorescent optical fiber thermodetector comprises a power supply module, a fluorescent optical fiber probe, a multi-channel fluorescent signal demodulation module, a case and an intelligent terminal. A plurality of groups of sliding grooves are formed in the case, the shells of the multi-channel fluorescence signal demodulation modules are square, and the plurality of multi-channel fluorescence signal demodulation modules respectively slide into the sliding grooves in a pull-out manner and are mounted on the case; a back plate is embedded in the case, the case is provided with a first DB9 interface used for being connected with the multi-channel fluorescence signal demodulation module in an inserted mode, and the first DB9 interface is communicated with a circuit on the back plate; the multi-channel fluorescence signal demodulation module is connected with the fluorescence optical fiber probe, and the multi-channel fluorescence signal demodulation module is a multi-channel fluorescence signal demodulation module; and the case is provided with a through hole for the fluorescent optical fiber to pass through.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement, in particular to a multi-channel expandable fluorescent optical fiber temperature measuring instrument. Background Art

[0002] High-voltage switchgear is one of the important equipment in the power system. It generally works in high voltage, high current and strong magnetic field environment. Online monitoring of its temperature is very important for safe operation. Traditional types of temperature sensors such as thermocouples and thermistors cannot meet the temperature measurement requirements of this special environment. Fluorescent fiber temperature measurement is a method of measuring temperature based on the characteristics of rare earth fluorescent materials such as fluorescence lifetime. Compared with traditional temperature measurement methods such as platinum resistance and thermocouples, fluorescent fiber temperature measurement technology is corrosion-resistant and resistant to strong magnetic interference. In recent years, it has been well applied in power monitoring and other systems.

[0003] The contact temperature of the switch cabinet is related to the load current. Reasonable contact temperature can improve the working efficiency of the switch cabinet and extend the service life of the equipment, ensuring that the switch cabinet will not cause safety hazards due to excessive temperature during normal operation. A multi-channel thermometer is a device used to measure the temperature of multiple locations at the same time. It can monitor temperature changes in different locations or areas by deploying multiple sensors and a multi-channel data acquisition system. This function is very useful for applications that require temperature measurement and monitoring at multiple points.

[0004] Each temperature measurement module of an existing fluorescent fiber optic thermometer is usually fixed to 3 or 6 channels. The fixed number of channels is not easy to expand, and the data connection between multiple modules is inconvenient during expansion. Utility Model Content

[0005] The utility model aims to provide a multi-channel expandable fluorescent optical fiber thermometer, which adopts a chassis plug-in structure, is easy to expand, and can conveniently realize 6*n channel fluorescent temperature measurement.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A multi-channel expandable fluorescent fiber optic thermometer comprises a power module, a fluorescent fiber optic probe, a multi-channel fluorescent signal demodulation module, a chassis and an intelligent terminal; the chassis is provided with a plurality of groups of slide slots, the shell of the multi-channel fluorescent signal demodulation module is square, and a plurality of multi-channel fluorescent signal demodulation modules are respectively slid into the slide slots by pulling and installed on the chassis; a back panel is embedded in the chassis, a first DB9 interface for plugging with the multi-channel fluorescent signal demodulation module is provided on the chassis, and the first DB9 interface is connected to the line on the back panel; the multi-channel fluorescent signal demodulation module is connected to the fluorescent fiber optic probe, and the multi-channel fluorescent signal demodulation module is a multi-channel fluorescent signal demodulation module; the chassis is provided with a through hole for the fluorescent optical fiber to pass through.

[0008] As a preferred technical solution, the multi-channel fluorescence signal demodulation module is a 6-channel multi-channel fluorescence signal demodulation module.

[0009] As a preferred technical solution, a power interface is provided on the chassis, and the power interface is used to connect the power module via a cable, and the power interface is connected to the line on the backplane.

[0010] As a preferred technical solution, the chassis is also provided with a second DB9 interface, which is connected to the circuit of the backplane and is used to connect to other chassis and / or intelligent terminals.

[0011] As a preferred technical solution, the channel fluorescence signal demodulation module is connected to the MCU control circuit, and the MCU control circuit is connected to the multi-channel fluorescence signal demodulation module through a backplane line.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The multi-channel fluorescence signal demodulation module is placed in the chassis. By adjusting the number of modules and the number of chassis, the multi-channel temperature measurement can be further expanded, which is conducive to the simultaneous measurement of temperatures at multiple locations. By arranging the chassis at different positions, temperature changes can be monitored at different locations or areas. This is very useful for applications that require temperature measurement and monitoring at multiple points. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the effect of connecting chassis in parallel;

[0015] Figure 2 It is a structural schematic diagram of the fluorescence signal demodulation module;

[0016] Figure 3 The structure of the chassis is shown in Figure 1. Figure 1 ;

[0017] Figure 4 The structure of the chassis is shown in Figure 1. Figure 2 .

[0018] Among them, the figure numbers are as follows: 1-chassis, 2-slide slot, 3-power interface, 4-second DB9 interface, 5-multi-channel fluorescence signal demodulation module, 6-optical fiber interface. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] On the contrary, the present application covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present application as defined by the claims. Further, in order to make the public have a better understanding of the present application, some specific details are described in detail in the detailed description of the present application below. Those skilled in the art can fully understand the present application without the description of these details.

[0021] Example

[0022] like Figure 1 As shown, a multi-channel expandable fluorescent fiber optic thermometer includes a power module, a fluorescent fiber optic probe, a multi-channel fluorescent signal demodulation module 5, a chassis 1, an MCU control circuit, and an intelligent terminal.

[0023] like Figure 3 As shown, the chassis 1 is provided with a slide slot 2, and the shell of the multi-channel fluorescence signal demodulation module 5 is square, which slides into the slide slot 2 and is installed on the chassis 1 by pulling; a backplane is embedded in the chassis 1, and the chassis 1 is provided with a first DB9 interface for plugging with the connection terminal of the multi-channel fluorescence signal demodulation module 5, and the first DB9 interface is connected to the line on the backplane; the multi-channel fluorescence signal demodulation module 5 is connected to the fluorescence fiber probe. The multi-channel fluorescence signal demodulation module 5 is connected to the fluorescence fiber probe to measure temperature by analyzing the fluorescence lifetime of the fluorescent substance.

[0024] As a preferred embodiment, a chassis 1 is provided with 7 groups of slide slots 2, so that 7 multi-channel fluorescence signal demodulation modules 5 can be installed on a chassis 1. The multi-channel fluorescence signal demodulation module 5 is provided with 6 optical fiber interfaces 6 for connecting with 6 fluorescent optical fiber probes. Thus, installing multiple multi-channel fluorescence signal demodulation modules 5 on a chassis 1 completes the expansion of 6*n channels, and the connection between chassis 1 and chassis 1 further completes the channel expansion. The multi-channel fluorescence signal demodulation module 5 is connected to the chassis 1 through the first DB9 connector, and each chassis 1 can connect 7 multi-channel fluorescence signal demodulation modules 5, and each chassis 1 can realize 42-channel fluorescence temperature measurement.

[0025] Furthermore, the chassis 1 is provided with a power interface 3, which is used to connect the power module via a cable, and the power interface 3 is connected to the line on the backplane. The power module is an AC / DC power conversion module.

[0026] Furthermore, the chassis 1 is provided with two second DB9 interfaces 4, which are connected to the circuits of the backplane and are used to connect to other chassis 1 and / or intelligent terminals.

[0027] Furthermore, the MCU control circuit is connected to the multi-channel fluorescence signal demodulation module 5 via a backplane line, and the MCU control circuit is used for multi-channel data reading and caching.

[0028] In this embodiment, the power module is connected to the chassis 1 to power the multi-channel fluorescence signal demodulation modules 5 plugged into the chassis 1. By setting the intelligent terminal to be connected to the chassis 1, the data collected by the multi-channel fluorescence signal demodulation module 5 is obtained, and the temperature of each channel collected by the fluorescence fiber optic thermometer is displayed in real time. Multiple chassis 1 are connected in parallel through the second DB9 interface 4 to perform multi-channel temperature measurement. Figure 1 As shown, after being connected in parallel, multiple fluorescent fiber optic thermometers are connected to the intelligent terminal through a 475 communication circuit network to display data.

[0029] In this embodiment, each chassis 1 includes at most 7 multi-channel fluorescence signal demodulation modules 5, and each multi-channel fluorescence signal demodulation module 5 is pluggable, so that each multi-channel fluorescence signal demodulation module 5 of a chassis 1 connected to an optical fiber can measure the temperature of the location where the optical fiber is located.

[0030] Specifically, the multi-channel fluorescence signal demodulation module 5 described in this embodiment can adopt the structure of the existing multi-channel multi-channel fluorescence signal demodulation module 5.

[0031] In this embodiment, the chassis 1 can be installed with any number of multi-channel fluorescence signal demodulation modules 5 in a plug-in manner according to actual needs, such as Figure 2 Shown is a schematic diagram of installing four multi-channel fluorescence signal demodulation modules 5.

[0032] It is worth noting that, based on the above structural design, in order to solve the same technical problem, even if some insubstantial improvements are made on the present invention, they also fall within the protection scope of the present invention.

Claims

1. A multi-channel scalable fluorescent fiber optic thermometer, characterized in that: It includes a power module, a fluorescent fiber probe, a multi-channel fluorescent signal demodulation module, a chassis and an intelligent terminal; the chassis is provided with several groups of slide slots, the shell of the multi-channel fluorescent signal demodulation module is square, and several multi-channel fluorescent signal demodulation modules are respectively slid into the slide slots by pulling and installed on the chassis; a backplane is embedded in the chassis, and the chassis is provided with a first DB9 interface for plugging with the multi-channel fluorescent signal demodulation module, and the first DB9 interface is connected to the line on the backplane; the multi-channel fluorescent signal demodulation module is connected to the fluorescent fiber probe, and the multi-channel fluorescent signal demodulation module is a multi-channel fluorescent signal demodulation module; the chassis is provided with a through hole for the fluorescent optical fiber to pass through, and the chassis is provided with a power interface, the power interface is used to connect the power module through a cable, and the power interface is connected to the line on the backplane.

2. A multi-channel expandable fluorescent fiber optic thermometer according to claim 1, characterized in that: The multi-channel fluorescence signal demodulation module is a 6-channel multi-channel fluorescence signal demodulation module.

3. A multi-channel expandable fluorescent fiber optic thermometer according to claim 1, characterized in that: The chassis is also provided with a second DB9 interface, which is connected to the circuit of the backplane.

4. The multi-channel expandable fluorescent fiber optic thermometer according to claim 1, characterized in that: The multi-channel fluorescence signal demodulation module is connected with an MCU control circuit, and the MCU control circuit is connected with the multi-channel fluorescence signal demodulation module through a backplane line.

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