CN215114427U

CN215114427U - Measurement system based on distributed optical fiber sensor

Info

Publication number: CN215114427U
Application number: CN202121232789.5U
Authority: CN
Inventors: 樊光明
Original assignee: Yibin Lingyin Intelligent Technology Co ltd
Current assignee: Yibin Lingyin Intelligent Technology Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-12-10
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a measurement system based on distributed optical fiber sensor, which relates to the technical field of track detection, and comprises a distributed optical fiber sensor, a strain tester, an NB-IOT acquisition module, an NB-IOT antenna, an NB-IOT base station and a monitoring module, wherein the distributed optical fiber sensor, the strain tester, the NB-IOT acquisition module, the NB-IOT antenna, the NB-IOT base station and the monitoring module are sequentially connected; the device can make up the deficiency of the communication function of the NB-IOT module in a closed area with poor signals and solve the problem of weak data transmission signals between the NB-IoT base stations by arranging the NB-IOT acquisition module, the NB-IOT antenna and the NB-IOT base station and arranging the wireless communication module in the NB-IOT acquisition module; and the storage battery is arranged for supplying power, so that the problems of complicated field wiring and the like caused by power supply wire pulling are avoided, and the underground track measurement project is convenient to carry out.

Description

Measurement system based on distributed optical fiber sensor

Technical Field

The utility model relates to a track detects technical field, concretely relates to measurement system based on distributed optical fiber sensor.

Background

The strain is the local relative deformation of an object under the action of factors such as external force, non-uniform temperature field and the like, and is one of important parameters reflecting the stress or health state of an engineering structure; by detecting the critical facilities in real time, the early warning of facility disasters and the scientific management of facilities can be realized. The traditional strain detection system mainly adopts a resistance strain gauge, can convert strain change on a mechanical component into resistance change, and calculates the change of resistance by measuring the change of output current or voltage so as to reversely deduce the strain; however, the system is susceptible to environment and has large errors, and therefore, the measurement result is not satisfactory; therefore, a strain measurement system and system with high interference resistance and high measurement accuracy are needed.

The utility model discloses a now granted utility model, patent number CN202021920605.X, the patent name is a track strain measurement system based on distributed optical fiber sensor, includes: respectively arranging a distributed optical fiber sensor, a strain detector, an NB-IOT module and a monitoring platform on two sides of a track to be detected along the horizontal extension direction of the track to be detected; the distributed optical fiber sensor receives detection light with preset frequency sent by a strain detector, outputs an offset signal carrying strain information of the track to be detected, and transmits the offset signal to the monitoring platform through the NB-IOT module to be displayed, so that accurate detection of track strain is realized, and the technical problems that a strain detection system adopted in the prior art is easily influenced by the environment, has large error and the like are solved.

The above solution still has the following problems: when the system is used for track strain measurement, the system is often applied to underground tracks, deep wells and other positions, a base station network is not sound at present, and only large-area coverage of a local area can be realized, but an underground environment is often a closed space and cannot be effectively covered by NB-IOT base station signals, the NB-IOT signals are poor, the transmission of the NB-IOT signals is influenced to a certain extent, and the measurement result is deviated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art and providing a measuring system based on a distributed optical fiber sensor, which comprises a distributed optical fiber sensor, a strain tester, an NB-IOT acquisition module, an NB-IOT antenna, an NB-IOT base station and a monitoring module, wherein the distributed optical fiber sensor, the strain tester, the NB-IOT acquisition module, the NB-IOT antenna, the NB-IOT base station and the monitoring module are sequentially connected;

the NB-IOT acquisition module comprises a wireless communication module, a first NB-IOT communication module and a storage module, and the strain tester, the wireless communication module, the first NB-IOT communication module, the storage module and the NB-IOT antenna are sequentially connected.

Preferably, the distributed optical fiber sensor is a standard communication single-mode optical fiber.

Preferably, the strain detector is a brillouin optical time domain reflection strain monitor.

Preferably, the monitoring module includes a second NB-IOT communication module, a control processor, and an alarm device, the NB-IOT base station, the second NB-IOT communication module, and the control processor are sequentially connected, and the alarm device is connected to the control processor.

Preferably, the alarm device comprises a buzzer and an indicator light, and the buzzer and the indicator light are both connected with the control processor.

Preferably, the system further comprises a human-computer interaction module, and the human-computer interaction module is connected with the control processor.

Preferably, the human-computer interaction system is a touch screen.

Preferably, the optical fiber sensor further comprises a power module, the power module comprises a storage battery and a rectification module, the storage battery is connected with the rectification module, and the rectification module is connected with the optical fiber sensor, the strain tester, the wireless communication module, the first NB-IOT communication module and the storage module.

Preferably, the electric quantity detection module is further included, and the electric quantity detection module is connected with the storage battery and the wireless communication module.

Compared with the prior art, the utility model has the advantages that:

the utility model discloses can through setting up NB-IOT collection module, NB-IOT antenna, NB-IOT basic station, and establish wireless communication module in NB-IOT collection module, can compensate the not enough of NB-IOT module communication function in the bad airtight area of signal, solve the weak problem of data transmission signal between NB-IoT basic station; and the storage battery is arranged for supplying power, so that the problems of complicated field wiring and the like caused by power supply wire pulling are avoided, and the underground track measurement project is convenient to carry out.

Drawings

FIG. 1 is a schematic diagram of a distributed fiber optic sensor based measurement system;

fig. 2 shows a schematic diagram of a monitoring module of a distributed fibre optic sensor based measurement system.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1-2 of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, those skilled in the art can realize all other embodiments without creative efforts.

In the description of the present invention, it should be understood that the terms "counterclockwise", "clockwise", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1, a measurement system based on a distributed optical fiber sensor includes a distributed optical fiber sensor, a strain tester, an NB-IOT acquisition module, an NB-IOT antenna, an NB-IOT base station, and a monitoring module, where the distributed optical fiber sensor, the strain tester, the NB-IOT acquisition module, the NB-IOT antenna, the NB-IOT base station, and the monitoring module are sequentially connected;

Specifically, the distributed optical fiber sensor is a standard communication single-mode optical fiber.

Specifically, the strain detector is a brillouin optical time domain reflection strain monitor.

The strain information of the track to be detected is acquired by respectively arranging distributed optical fiber sensors on two sides of the track to be detected along the horizontal extension direction of the track to be detected, and the distributed optical fiber sensors are in signal connection with a strain detector and are used for receiving detection light with preset frequency sent by the strain detector and outputting an offset signal carrying the strain information of the track to be detected, so that the strain information of the track to be detected is converted into transmittable optical information and is transmitted to a monitoring module through an NB-IOT acquisition module, an NB-IOT antenna and an NB-IOT base station;

the strain tester performs data interaction with the first NB-IOT communication module through the wireless communication module, the storage module stores the received data and uploads the data to the NB-IOT base station through the NB-IOT antenna, the wireless transmission device is easy to maintain, good in expansibility, complex in electric wave, easy to be interfered by external electromagnetic waves and limited in transmission, the NB-IOT communication is low in energy consumption and long in transmission distance, but weak in transmission signals in a closed or remote environment, the wireless communication module is combined with the NB-IOT communication module, requirements of long-distance transmission and communication signal strength required in underground track measurement can be met, compatibility is better than that of a single NB-IOT communication module, and the application range is wider.

As shown in fig. 2, specifically, the monitoring module includes a second NB-IOT communication module, a control processor, and an alarm device, where the NB-IOT base station, the second NB-IOT communication module, and the control processor are sequentially connected, and the alarm device is connected to the control processor.

The control processor can receive data transmitted by the NB-IOT base station through the second NB-IOT communication module, decode the received information and finally reversely push out the track strain information to be detected, so that the track strain accurate detection is realized, and when the track strain detected by the monitoring module is higher than a preset strain threshold, the alarm device is started to alarm.

As shown in fig. 2, specifically, the alarm device includes a buzzer and an indicator light, and both the buzzer and the indicator light are connected to the control processor.

An operator can set a combination mode of a buzzer and an indicator light according to actual needs, and can send out targeted alarm information to various strain conditions.

As shown in fig. 2, in particular, the system further includes a human-computer interaction module, and the human-computer interaction module is connected with the control processor.

Specifically, the human-computer interaction system is a touch screen.

The touch screen on the monitoring module is convenient for operators to check and operate the strain information of the track to be tested.

As shown in fig. 1, the optical fiber sensor further includes a power module, where the power module includes a storage battery and a rectifier module, the storage battery is connected to the rectifier module, and the rectifier module is connected to the optical fiber sensor, the strain tester, the wireless communication module, the first NB-IOT communication module, and the storage module.

The rectifier module is used for converting a direct-current power supply provided by the storage battery into an alternating-current power supply, and the storage battery is used for supplying power to the optical fiber sensor, the strain tester, the wireless communication module, the first NB-IOT communication module and the storage module.

As shown in fig. 1, the battery pack further includes an electric quantity detection module, and the electric quantity detection module is connected to the storage battery and the wireless communication module.

The electric quantity detection module is used for detecting the residual electric quantity information of the storage battery, transmitting the detection information to the first NB-IOT communication module through the wireless communication module, and sending the detection information to the monitoring module through the first NB-IOT communication module.

Claims

1. A measuring system based on a distributed optical fiber sensor is characterized by comprising the distributed optical fiber sensor, a strain tester, an NB-IOT acquisition module, an NB-IOT antenna, an NB-IOT base station and a monitoring module, wherein the distributed optical fiber sensor, the strain tester, the NB-IOT acquisition module, the NB-IOT antenna, the NB-IOT base station and the monitoring module are sequentially connected;

2. The distributed fiber optic sensor-based measurement system of claim 1, wherein the distributed fiber optic sensor is a standard communications single mode fiber.

3. The distributed fiber optic sensor-based measurement system of claim 1, wherein the strain gauge is a brillouin optical time domain reflection strain monitor.

4. The distributed optical fiber sensor-based measurement system according to claim 1, wherein the monitoring module comprises a second NB-IOT communication module, a control processor, and an alarm device, the NB-IOT base station, the second NB-IOT communication module, and the control processor are connected in sequence, and the alarm device is connected to the control processor.

5. The distributed optical fiber sensor-based measuring system according to claim 4, wherein the alarm device comprises a buzzer and an indicator light, and the buzzer and the indicator light are both connected with the control processor.

6. The distributed fiber sensor-based measurement system of claim 4, further comprising a human-computer interaction module, wherein the human-computer interaction module is connected with the control processor.

7. The distributed optical fiber sensor-based measuring system of claim 6, wherein the human-computer interaction system is a touch screen.

8. The measurement system based on the distributed optical fiber sensor is characterized by further comprising a power supply module, wherein the power supply module comprises a storage battery and a rectification module, the storage battery is connected with the rectification module, and the rectification module is connected with the optical fiber sensor, the strain tester, the wireless communication module, the first NB-IOT communication module and the storage module.

9. The distributed optical fiber sensor-based measuring system according to claim 8, further comprising a power detection module, wherein the power detection module is connected to the storage battery and the wireless communication module.