TWI846115B - Infrared thermal imaging system with tin whisker detection ability - Google Patents

Abstract

Disclosed is an infrared thermal imaging system with tin whisker detection capability comprising: a detecting rod, an illuminating device, a camera, a controller and a display screen. The illuminating device and the camera are arranged on a casing inserting section of the detecting rod. The camera is used to photograph the interior of a casing to generate a detection image and an infrared thermal image. The control device receives the detection image and the infrared thermal image from the camera, and displays them on the display screen. Since the diameter of the casing inserting section is not more than 2.5 cm, it can be inserted through the holes of the casing into the switchboard, so that the infrared thermal imaging system of the present invention can detect tin whiskers without opening the casing.

Description

Infrared thermal imaging system with tin whisker detection capability

The present invention relates to switchboard inspection, and more particularly to an infrared thermal imaging system with tin whisker detection capability.

The switchboard is an important component in the power supply system. The switchboard contains various devices such as circuit breakers, buses, overload protection devices, and transformers, each of which has different detection and maintenance items. Among them, the outer layer of the busbar is tin-plated. Due to the different expansion coefficients of the coating and the substrate, the growth of tin whiskers will be promoted at a certain temperature. When the tin whiskers grow and contact other components, short circuits and explosions will occur, causing harm.

In response to this, maintenance personnel will regularly shut down the power distribution board and open it for maintenance to confirm the growth status of tin whiskers. However, frequent power outages in the power distribution board will cause inconvenience in electricity use. Therefore, it is necessary to propose a detection device that can confirm the growth status of tin whiskers without shutting down and opening the power distribution board.

Therefore, the purpose of the present invention is to provide an infrared thermal imaging system with tin whisker detection capability, which can confirm the growth status of tin whiskers without the need to regularly shut down and open the distribution panel.

The present invention solves the problem of the prior art by providing an infrared thermal imaging system with tin whisker detection capability, comprising: a detection rod having a chassis insertion section and a grip section, the chassis insertion section having a diameter of no more than 2.5 cm, the grip section extending from the chassis insertion section, and the grip section having an insulating portion; an illumination device disposed on the chassis insertion section; a photographic device disposed on the chassis insertion section, the photographic device having a visible light photographic device and an infrared An external camera device, the visible light camera device is used to photograph the interior of a chassis to generate a detection image, and the infrared camera device is used to photograph the interior of a chassis to generate an infrared thermal image; a control device, connected to the lighting device and the camera device, to control the lighting device and the camera device, and to receive the detection image and the infrared thermal image from the camera device; and a display screen, connected to the control device, to display the detection image and the infrared thermal image

In one embodiment of the present invention, an infrared thermal imaging system with tin whisker detection capability is provided, and the lighting device emits green light.

In one embodiment of the present invention, an infrared thermal imaging system with tin whisker detection capability is provided, further comprising a storage device connected to the control device to store the detection image and the infrared thermal image.

In one embodiment of the present invention, an infrared thermal imaging system with tin whisker detection capability is provided, and the camera device is disposed on the cylindrical side of the cylindrical housing extension section.

In one embodiment of the present invention, an infrared thermal imaging system with tin whisker detection capability is provided. When the control device determines that the temperature in the infrared thermal image is abnormal, the control device takes a screenshot of the infrared thermal image.

In one embodiment of the present invention, an infrared thermal imaging system with tin whisker detection capability is provided, and the control device performs image enhancement on the detection image.

Through the technical means adopted by the infrared thermal imaging system with tin whisker detection capability of the present invention, since the diameter of the chassis insertion section does not exceed 2.5 cm, the chassis insertion section of the detection rod can be inserted into the inside of the chassis through the hole of the chassis without turning off the power supply and opening the switchboard. The visible light camera and infrared camera on the chassis insertion section can obtain the image of the inside of the chassis. Therefore, the infrared thermal imaging system of the present invention can detect the growth of tin whiskers and whether the temperature inside the chassis is abnormal without opening the switchboard.

100: Infrared thermal imaging system

1: Detection rod

10: Front-end

11: Chassis extension section

12: Grip section

13: Lighting device

131: LED

132: LED driver

14: Photographic equipment

141: Visible light photography device

142: Infrared camera

2: Control device

20: Backend

3: Display screen

4: Storage device

[Figure 1] is a three-dimensional schematic diagram showing an infrared thermal imaging system with tin whisker detection capability according to an embodiment of the present invention; [Figure 2] is a block schematic diagram showing an infrared thermal imaging system with tin whisker detection capability according to the embodiment of the present invention.

The following describes the implementation of the present invention based on Figures 1 and 2. The description is not intended to limit the implementation of the present invention, but is an example of the implementation of the present invention.

As shown in FIG. 1, an infrared thermal imaging system 100 with tin whisker detection capability according to an embodiment of the present invention comprises: a detection rod 1, a control device 2, a display screen 3 and a storage device 4.

As shown in FIG. 1 and FIG. 2, the detection rod 1 is the front end 10 of the infrared thermal imaging system 100. The detection rod 1 has a chassis insertion section 11 and a grip section 12. The diameter of the chassis insertion section 11 does not exceed 2.5 cm, so that the chassis insertion section 11 can be inserted into the chassis through the hole of the chassis for detection without opening the chassis. Therefore, the infrared thermal imaging system 100 of the present invention can detect tin whiskers without opening the chassis. The chassis insertion section 11 is a cylinder so that the chassis insertion section 11 can be rotated to any angle in the hole. The grip section 12 extends from the chassis insertion section 11, and the grip section 12 has an insulating portion to prevent the detection personnel from getting electric shock. The grip section 12 is for the tester to hold and operate the test rod 1.

The lighting device 13 is disposed at the chassis extension section 11. In this embodiment, the lighting device 13 emits green light to make the growth status of the tin whisker easy to identify. Specifically, the lighting device 13 has a light-emitting diode 131 and a light-emitting diode driver 132 for driving the light-emitting diode 131. The light-emitting diode 131 can be a light-emitting diode that emits a single color, or a multi-color light-emitting diode that emits white light or other colors.

The photographic device 14 is disposed on the chassis extension section 11. The photographic device 14 is disposed on the cylindrical side of the chassis extension section 11, and can change the photographic range as the chassis extension section 11 rotates. The photographic device 14 has a visible light photographic device 141 and an infrared photographic device 142. The visible light photographic device 141 is used to photograph the interior of a chassis and generate a detection image. The detection image is used to detect the growth status of tin whiskers. The infrared photographic device 142 is used to photograph the interior of a chassis and generate an infrared thermal image. The infrared thermal image is used to detect whether the temperature inside the chassis is abnormal. The visible light camera 141 and the infrared camera 142 are arranged side by side so that the photographic ranges of the visible light camera 141 and the infrared camera 142 are substantially the same.

The control device 2, the display screen 3 and the storage device 4 are the back end 20 of the infrared thermal imaging system 100. The front end 10 and the back end 20 are connected in a wired manner, and the distance between the front end 10 and the back end 20 can reach 2.5 meters. In other embodiments, the front end 10 and the back end 20 can also be connected in a wireless manner.

The control device 2 is an embedded system. The control device 2 is connected to the lighting device 13, the camera device 14 and the storage device 4, and controls the lighting device 13 and the camera device 14 and accesses the storage device 4. The control device 2 receives the detection image and the infrared thermal image from the camera device 14.

The control device 2 can enhance the detected image to make the outline of the irradiated object and equipment clearer. The control device 2 marks the point with the highest temperature in the infrared thermal image. In addition, when the control device 2 determines that the temperature in the infrared thermal image is abnormal, the control device 2 takes a screenshot of the infrared thermal image.

The display screen 3 is connected to the control device 2 to display the detection image and infrared thermal image processed by the control device 2. The display screen 3 can display the detection image and the infrared thermal image at the same time for easy reference, and can also display the detection image or the infrared thermal image separately. The display screen 3 is a touch screen, so that the detection personnel can operate the infrared thermal imaging system 100 through the user image interface of the display screen 3.

The storage device 4 stores the detected images and infrared thermal images for recording, image playback, and storing screenshots. In the embodiment where the display screen 3 only displays the image in real time, the storage device 4 may not be provided.

The above description and explanation are only the description of the preferred embodiment of the present invention. Those with common knowledge of this technology can make other modifications according to the scope of the patent application defined below and the above description, but these modifications should still be for the spirit of the present invention and within the scope of the rights of the present invention.

100: Infrared thermal imaging system

1: Detection rod

11: Chassis extension section

12: Grip section

13: Lighting device

14: Photographic equipment

2: Control device

3: Display screen

4: Storage device

Claims (6)

An infrared thermal imaging system with tin whisker detection capability includes: a detection rod having a chassis insertion section and a grip section, the chassis insertion section having a diameter of no more than 2.5 cm, the grip section extending from the chassis insertion section, and the grip section having an insulating portion; an illumination device disposed on the chassis insertion section; a photographic device disposed on the chassis insertion section, the photographic device having a visible light photographic device and an infrared photographic device, the visible light photographic device The device is used to photograph the interior of a chassis to generate a detection image, and the infrared camera device is used to photograph the interior of the chassis to generate an infrared thermal image; a control device is connected to the lighting device and the camera device to control the lighting device and the camera device, and receive the detection image and the infrared thermal image from the camera device; and a display screen is connected to the control device to display the detection image and the infrared thermal image. As in claim 1, the infrared thermal imaging system with tin whisker detection capability, wherein the lighting device emits green light. The infrared thermal imaging system with tin whisker detection capability as claimed in claim 1 further includes a storage device connected to the control device to store the detection image and the infrared thermal image. As in claim 1, the infrared thermal imaging system with tin whisker detection capability, wherein the camera device is disposed on the cylindrical side of the cylindrical housing extension section. As in claim 1, the infrared thermal imaging system with tin whisker detection capability, wherein when the control device determines that the temperature in the infrared thermal image is abnormal, the control device takes a screenshot of the infrared thermal image. As in claim 1, the infrared thermal imaging system with tin whisker detection capability, wherein the control device performs image enhancement on the detection image.

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