TW201348684A - Environmental temperature monitoring device - Google Patents

Abstract

The present invention provides an environmental temperature monitoring device, which includes an optical wave generation unit; an optical fiber arranged in the environment; at least one temperature-sensing deformation element that holds the optical fiber; and an optical detection unit arranged at one end of the optical fiber. The optical wave generation unit generates an optical wave signal to be transmitted in the optical fiber. When the temperature-sensing deformation element generates deformation difference according to the temperature change at the position to be detected, the optical fiber is bent to change or block the optical wave signal, so that the optical detection unit can detect the change of the optical wave signal, thereby monitoring the temperature change at the position to be detected.

Description

Ambient temperature monitoring device

The invention relates to an environmental monitoring device, in particular to an environmental temperature monitoring device constructed by using an optical fiber and a temperature sensing deformation element.

The ambient temperature monitoring device is installed in a specific environment to perform appropriate temperature control on a plurality of locations to be detected. The application range of ambient temperature monitoring is quite extensive. For example, in the application of the machine room, the normal operation of the machine is often related to the temperature inside the machine room. The overheated environment easily causes the machine to be abnormal due to poor heat dissipation. Therefore, it is necessary to use the environment. Temperature monitoring controls the temperature of the room to be detected, which means that the machine is in normal operation. In addition, for places with large floor space, such as warehouses, houses, forests, etc., in order to avoid disasters caused by temperature fluctuations, such as fires, multiple temperature monitoring points are also needed to effectively save patrol manpower. Under the premise, effective internal temperature monitoring is carried out, and the corresponding personnel are immediately notified in various forms of alarm mode.

Therefore, the implementation of temperature monitoring in a specific environment is a very important safeguard, but it is often because the price of the ambient temperature monitoring device on the market is too expensive and prohibitive. Therefore, how to construct a low-cost environmental temperature monitoring device Become the demand that everyone expects.

In view of the above, the present invention proposes a new environmental temperature monitoring device in response to the above needs to effectively overcome the above problems.

The main object of the present invention is to provide an inexpensive ambient temperature monitoring device for preventing and monitoring temperature anomalies in the environment.

Another object of the present invention is to provide an ambient temperature monitoring device that can detect a fire and use In the fire monitoring system.

In order to achieve the above object, the present invention provides an ambient temperature monitoring device, which mainly comprises a light wave generating unit; an optical fiber; at least one temperature sensing deformation element; and a light detecting unit.

The optical fiber is disposed in an environment, and the light wave generating unit generates a light wave signal for transmission in the optical fiber. The temperature-sensing deformation element is disposed in at least one of the above-mentioned environments and is provided with the above-mentioned optical fiber, and the temperature-sensitive deformation element is deformed according to the temperature change of the temperature to be detected, and the optical fiber is bent to change Or block the light wave signal. The light detecting unit is disposed at one end of the optical fiber to detect a change of the optical signal and monitor a temperature change at the location to be detected.

For a better understanding and understanding of the structural features and the achievable effects of the present invention, please refer to the preferred embodiment and the detailed description.

Please refer to Fig. 1, which is a schematic view of an embodiment of the present invention. As shown in the figure, the ambient temperature monitoring device 10 of the present invention is mainly composed of a light wave generating unit 12; an optical fiber 14; a temperature sensing deforming element 16; and a light detecting unit 18. This temperature-sensing deformation element 16 can be a bi-metal.

The optical fiber 14 is disposed in an environment to be monitored, and generates a light wave signal transmitted through the optical fiber 14 via the light wave generating unit 12. The temperature-sensing deformation element 16 is disposed at a position to be detected in the environment, and the optical fiber 14 is interposed between the temperature-sensing deformation elements 16 . When the temperature change is to be detected, the temperature-sensing deformation element 16 will bend the optical fiber 14 to change or block the light wave signal as the deformation is generated. At this time, the light detecting unit 18 disposed on one end of the optical fiber 14 detects the change of the light wave signal, and can monitor the temperature change of the location to be detected, for example, in the fire monitoring of the fire, and can instantly detect the fire point, Issue an early warning notice.

In this embodiment, the light wave generating unit 12 and the light detecting unit 18 are integrated into a reflective light detecting device 19, and thus are disposed on the same side of the optical fiber as the light wave generator 12. The reflective photodetecting device can be, for example, an optical time domain reflectometer or a reflection loss meter.

In addition, in order to perform data analysis, remote monitoring or alarm notification on the temperature variation detected by the light detecting unit 18, and control the light wave generating unit 12, a light detecting unit 18 and the light wave generating unit 12 may be electrically connected. Monitor host 20. The administrator can operate on the monitoring host 20, and use the monitoring software on the monitoring host 20 to perform corresponding analysis on the received temperature data, and automatically respond to the over-limit data and record and save the entire data generation process.

Please refer to FIG. 2, which is a schematic view of another embodiment of the present invention. The difference between this embodiment and the embodiment of FIG. 1 is that a plurality of optical fibers 14 having temperature sensing deformation elements 16 are disposed at the ends and at least one is disposed between the optical fibers 14 and the reflective light detecting device 19. The optical switch 21 is provided to provide a control interface. The optical switch 21 is electrically connected to the monitoring host 20 and the reflective light detecting device 19, so that the administrator can operate the optical switch 21 on the monitoring host 20.

Please refer to FIG. 3, which is a schematic view of still another embodiment of the present invention. This embodiment is illustrative of the ability to place a plurality of temperature-sensing deformation elements 16 at a plurality of locations on a single fiber 14 to monitor different locations in the environment.

Please refer to FIG. 4, which is a schematic view of still another embodiment of the present invention. The difference between this embodiment and Fig. 3 is that when there are a plurality of optical fibers 14, at least one optical switch 21 is required for control.

Please refer to FIG. 5, which is a schematic view of still another embodiment of the present invention. This embodiment is for illustrating that a transmissive application can also be employed. For example, the light detecting unit 18 is a power meter, and thus the light detecting unit 18 and the light wave generating unit 12 are disposed on the opposite side of the optical fiber 14.

In summary, the present invention provides an inexpensive ambient temperature monitoring device that utilizes a shape change caused by a temperature-sensing element during temperature variation to bend an optical fiber, thereby affecting the optical signal transmitted in the optical fiber, and then By detecting the temperature change of the environment by detecting the variation of the light wave signal, it is used for prevention and monitoring. Furthermore, the ambient temperature monitoring device of the present invention further includes a monitoring host for performing data analysis, remote monitoring or alarm notification on the detected temperature variation.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any changes or modifications of the features and spirits of the present invention should be included in the scope of the present invention.

10‧‧‧Environmental temperature monitoring device

12‧‧‧Lightwave generating unit

14‧‧‧Fiber

16‧‧‧ Temperature deformation element

18‧‧‧Light detection unit

19‧‧‧Reflective light detector

20‧‧‧Monitoring host

21‧‧‧Optical switcher

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of one embodiment of the invention.

Figure 2 is a schematic view of another embodiment of the present invention.

Figure 3 is a schematic view of still another embodiment of the present invention.

Figure 4 is a schematic view of another embodiment of the present invention.

Figure 5 is a schematic view of another embodiment of the present invention.

10‧‧‧Environmental temperature monitoring device

12‧‧‧Lightwave generating unit

14‧‧‧Fiber

16‧‧‧ Temperature deformation element

18‧‧‧Light detection unit

19‧‧‧Reflective light detector

20‧‧‧Monitoring host

Claims (8)

An ambient temperature monitoring device includes: a light wave generating unit for generating a light wave signal; at least one optical fiber disposed in an environment, the light wave signal is transmitted in the optical fiber; at least one temperature sensing deformation element, the setting In the environment, at least one of the temperature sensing deformation elements is interposed between the temperature sensing deformation elements, and the temperature sensing deformation element generates a deformation difference along with the temperature change of the temperature sensing portion, and bends the optical fiber to change or Blocking the light wave signal; and a light detecting unit disposed at one end of the optical fiber, the light detecting unit detecting a change of the light wave signal to monitor a temperature change at the position to be detected. The ambient temperature monitoring device of claim 1, wherein the light wave generating unit and the light detecting unit are further integrated into a reflective light detecting device. The ambient temperature monitoring device of claim 2, wherein the reflective photodetecting device is an optical time domain reflectometer. The ambient temperature monitoring device of claim 2, wherein the reflective photodetecting device is a reflection loss meter. The environmental temperature monitoring device of claim 1, wherein the light detecting unit is a power meter. The ambient temperature monitoring device of claim 1, wherein the temperature sensing element is a bimetallic element. The ambient temperature monitoring device of claim 2, further comprising a monitoring host electrically connected to the reflective photodetecting device. The environmental temperature monitoring device of claim 7, wherein when the optical fiber is two or more, the The ambient temperature monitoring device further includes at least one optical switch disposed between the reflective photodetecting device and the optical fiber and electrically connected to the monitoring host.