Humidity detector for closed cavity

Abstract

A humidity detector for a closed cavity belongs to the technical field of humidity sensors and comprises a detector shell, a refrigerating device and a laser transmitter, the refrigerating device and the laser transmitter are arranged in the detector shell, and input ends of the refrigerating device, the laser transmitter and an optical fiber are embedded into an aluminum block and are flush with the surface of the aluminum block. The output end of the laser transmitter is connected with the input end of the optical fiber, the aluminum block is embedded into the detector shell and is flush with the surface of the detector shell, the output end of the refrigeration device is connected with the optical sensor, the output end of the optical fiber is connected with the optical sensor, and the optical sensor is connected with the host. The humidity detection device is used for detecting the humidity in the closed cavity, the closed cavity is prevented from being opened, the detection efficiency is ensured, and a closed instrument is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of humidity sensor, specifically relates to a humidity detector for closed cavity. BACKGROUND

[0002] The humidity detector is widely applied in various trades and professions. Humidity has important influence on the performance and stability of equipment. The change of humidity also influences the service life of the device. Therefore, it is necessary to use the humidity detector to detect the humidity of the device in the humid environment.

[0003] Most of the devices applied in various industries are internally closed, and whether water enters the device internally cannot be realized by opening the device shell. In view of this situation, the utility model provides a humidity detector for closed cavity. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the defects in the prior art, the utility model provides a humidity detector for closed cavity, which comprises a detector shell, a refrigeration device and a laser emitter. The refrigeration device and the laser emitter are arranged in the detector shell. The refrigeration device, the laser emitter and the input end of the optical fiber are embedded in the aluminum block and flush with the surface thereof. The output end of the laser emitter is connected with the input end of the optical fiber. The aluminum block is embedded in the detector shell and flush with the surface thereof. The output end of the refrigeration device is connected with the optical sensor. The output end of the optical fiber is connected with the optical sensor. The optical sensor is connected with the host computer.

[0005] Further, the refrigeration device comprises a first-stage refrigeration sheet, a second-stage refrigeration sheet, a third-stage refrigeration sheet and a fan. The aluminum block is sequentially connected with the first-stage refrigeration sheet, the second-stage refrigeration sheet, the third-stage refrigeration sheet and the fan. The fan is connected with the host computer through the optical sensor.

[0006] Further, the output end of the refrigeration device is connected with the optical sensor through the cable.

[0007] Further, the cable and the optical fiber constitute a cable line. The refrigeration device and the laser emitter are connected with the optical sensor through the cable line.

[0008] Further, the optical sensor is connected with the re232 interface through the cable line.

[0009] Further, the re232 interface is connected with the host computer.

[0010] The utility model has the advantages that some devices are internally closed. If the shell is opened, the change of pressure, temperature and humidity may cause problems of the device. The device can detect the humidity of the closed cavity. Compared with the prior art, the internal environment is not affected by opening the device, so that the efficiency and accuracy of detection are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a three-dimensional structure schematic diagram of a humidity detector for a closed cavity.

[0012] Fig. 2 is a three-dimensional structure schematic diagram of a humidity detector for a closed cavity.

[0013] In the figure: 1, detector housing; 2, laser emitter; 3, optical fiber; 4, aluminum block; 5, cable; 6, optical sensor; 7, re232 interface; 8, first-stage refrigeration piece; 9, second-stage refrigeration piece; 10, third-stage refrigeration piece; 11, fan; 12, electric cable. DETAILED DESCRIPTION

[0014] Example 1

[0015] A humidity detector for a closed cavity, as shown in Figs. 1-2 , comprising a detector housing 1, a refrigeration device, and a laser emitter 2, the refrigeration device, the laser emitter 2 being arranged inside the detector housing 1, the refrigeration device, the laser emitter 2, and the input end of the optical fiber 3 being embedded into the aluminum block 4 and flush with the surface thereof, the output end of the laser emitter 2 being connected to the input end of the optical fiber 3, the aluminum block 4 being embedded into the detector housing 1 and flush with the surface thereof, the output end of the refrigeration device being connected to the optical sensor 6, the output end of the optical fiber 3 being connected to the optical sensor 6, and the optical sensor 6 being connected to the host computer.

[0016] The refrigeration device comprises a first-stage refrigeration piece 8, a second-stage refrigeration piece 9, a third-stage refrigeration piece 10, and a fan 11, the aluminum block 4 being connected to the first-stage refrigeration piece 8, the second-stage refrigeration piece 9, the third-stage refrigeration piece 10, and the fan 11 in sequence, and the fan 11 being connected to the host computer through the optical sensor 6.

[0017] The output end of the refrigeration device is connected to the optical sensor 6 through the electric cable 12.

[0018] The electric cable 12 and the optical fiber 3 constitute the cable 5, and the refrigeration device and the laser emitter 2 are connected to the optical sensor 6 through the cable 5.

[0019] The optical sensor 6 is connected to the re232 interface 7 through the cable 5.

[0020] The re232 interface 7 is connected to the host computer.

[0021] The working principle of the utility model is: firstly, connect the device with the power supply. The refrigerating sheet refrigerates, the instrument front surface is pasted with the device glass to be measured, the aluminum sheet 4 transmits the heat to the glass, and then reduces the temperature inside the device, if the device inside to be measured is waterlogged, the temperature reduction will make the internal glass dew. The laser emitter 2 continuously outputs at the same time, when the device inside is dewy, the dew will scatter the laser, and then make the light scatter into the optical fiber 3, the optical fiber 3 transmits the light signal to the optical sensor 6, the optical sensor 6 responds to the signal, proving that the device inside is waterlogged.

[0022] Embodiment 2

[0023] The utility model discloses a humidity detector for closed cavity aims at providing a kind of humidity detector for closed cavity, to solve the problems presented in the above background art.

[0024] The technical scheme adopted by the utility model is: a kind of humidity detector for closed cavity, including detector shell 1, laser emitter 2, optical fiber 3, aluminum block 4, cable 5, optical sensor 6, re232 interface 7, first refrigerating sheet 8, second refrigerating sheet 9, third refrigerating sheet 10, fan 11, cable 12.The aluminum block 4 is embedded from the inside of detector shell 1 to surface, and detector shell 1 is flush with aluminum block 4.

[0025] As a preferred scheme of the humidity sensor described in the utility model, wherein: detector shell 1 is composed of aluminum block 4, laser emitter 2, optical cable 3, cable 12, small, middle, big refrigerating sheet 8, 9, 10, fan 11 inside.Aluminum block 4 embeds laser emitter 2, optical fiber 3 inside, and aluminum block 4 is connected together with first refrigerating sheet 8, second refrigerating sheet 9, third refrigerating sheet 10, third refrigerating sheet 10 is fixed together with fan 11, and first refrigerating sheet 8, second refrigerating sheet 9, third refrigerating sheet 10 are powered by cable 12, and cable is powered with 13V, 3A standard.

[0026] As a preferred scheme of the humidity sensor described in the utility model, wherein: laser emitter 2 and optical fiber 3 are embedded from the inside of aluminum block 4 to surface, and laser emitter 2, optical fiber 3 are flush with aluminum block 4, and optical fiber 3 is extended into cable 5.

[0027] As a preferred scheme of the humidity sensor described in the utility model, wherein: optical fiber 2 is connected with optical sensor 6, and transmits light signal into optical sensor 6.

[0028] As a preferred scheme of the humidity sensor described in the utility model, wherein: optical fiber 3 and cable 12 constitute cable 5, and re232 interface 7 is used to power first refrigerating sheet 8, second refrigerating sheet 9, third refrigerating sheet 10 and fan 11.

[0029] Please refer to Fig. 1The utility model discloses, aluminium block 4 because its superior heat conduction, and then use aluminium block 4 from the inside embedding of detector shell 1 to surface, detector shell 1 and aluminium block 4 surface flush, laser emitter 3 and optical fiber 2 are embedded from the inside to surface in aluminium block 4, laser emitter 2, optical fiber 3 and aluminium block 4 surface flush, guarantee when the instrument is attached glass without gap. Optical fiber 3 connects light sensor 6, and the optical signal transmission is in light sensor 6 to whether the water of the measuring device in the light sensor has signal judgment.

[0030] Please refer to Fig. 2 , aluminium block 4 and first grade refrigerating sheet 8, second grade refrigerating sheet 9, third grade refrigerating sheet 10 are connected together, and third grade refrigerating sheet 10 is fixed together with fan 11, and first grade refrigerating sheet 8, second grade refrigerating sheet 9, third grade refrigerating sheet 10 are powered by cable 12, and the cable is powered with 13V, 3A standard. Optical fiber 3 is extended to cable 5. The temperature inside the device is changed by refrigerating sheet refrigeration. Optical fiber 3 and cable 12 constitute cable 5, and re232 interface 7 is used to power first grade refrigerating sheet 8, second grade refrigerating sheet 9, third grade refrigerating sheet 10 and fan 11.

[0031] The above only is the preferred implementation of the utility model, should point out, for the ordinary skill of the technical field, on the premise of not departing from the technical principle of the utility model, can also make several improvements and variations, these improvements and variations also should be regarded as the protection range of the utility model.

Claims

1. A humidity detector for enclosed cavities, characterized in that, The device includes a detector housing (1), a cooling device, and a laser emitter (2). The cooling device and the laser emitter (2) are located inside the detector housing (1). The input ends of the cooling device, the laser emitter (2), and the optical fiber (3) are all embedded in the aluminum block (4) and flush with its surface. The output end of the laser emitter (2) is connected to the input end of the optical fiber (3). The aluminum block (4) is embedded in the detector housing (1) and flush with its surface. The output end of the cooling device is connected to the optical sensor (6). The output end of the optical fiber (3) is connected to the optical sensor (6). The optical sensor (6) is connected to the host computer.

2. The humidity detector for enclosed cavities according to claim 1, characterized in that, The refrigeration device includes a primary refrigeration element (8), a secondary refrigeration element (9), a tertiary refrigeration element (10), and a fan (11). The aluminum block (4) is connected in sequence to the primary refrigeration element (8), the secondary refrigeration element (9), the tertiary refrigeration element (10), and the fan (11). The fan (11) is connected to the host through a photosensitive sensor (6).

3. The humidity detector for enclosed cavities according to claim 2, characterized in that, The output end of the cooling device is connected to the optical sensor (6) via a cable (12).

4. The humidity detector for enclosed cavities according to claim 3, characterized in that, The cable (12) and optical fiber (3) form a cable (5), and the cooling device and laser emitter (2) are connected to the optical sensor (6) through the cable (5).

5. The humidity detector for enclosed cavities according to claim 4, characterized in that, The optical sensor (6) is connected to the RE232 interface (7) via a cable (5).

6. The humidity detector for enclosed cavities according to claim 5, characterized in that, The re232 interface (7) is connected to the host.

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