An online detection system for vacuum degree and strain of vacuum glass

Abstract

The invention discloses an online detection system for vacuum degree and strain of vacuum glass, belonging to the technical field of non-destructive testing, and is composed of a suspension rail, a semiconductor laser, a reflective lens, an upper layer of glass, a glass sealing strip, a vacuum layer, a support platform, a lower layer of glass, a photosensitive device, a detector amplifier, a photoelectric conversion device, a data analyzer, a display, a convex lens sheet, a CCD element and a signal processor. The invention can determine the vacuum degree value of the vacuum glass by the concave deformation caused by the pressure difference between the vacuum layer and the external environment and the angle of the refracted light of the laser beam entering and exiting the vacuum glass, and by using two parallel laser beams to impinge on the vacuum glass, the reflected light of which is collected by the convex lens sheet and projected onto the CCD element, and the signal processor calculates the position of the light spot on the array CCD element by trigonometric functions to obtain the existing distance between the upper and lower layers of glass, thereby accurately calculating the strain value of the vacuum glass.

Description

Technical Field

[0001] The invention belongs to the technical field of nondestructive testing and relates to a vacuum glass detection system, in particular to an online vacuum degree and strain detection system for vacuum glass. Background Art

[0002] Vacuum glass has the advantages of heat insulation, sound insulation, noise reduction and condensation prevention, and is widely used in green buildings, energy-saving home appliances, scientific research and other fields. However, the determining factors of vacuum glass performance are mainly affected by the vacuum degree and structural strength, so the detection of vacuum degree and strain of vacuum glass is particularly important. For the traditional vacuum degree detection of vacuum glass, the main method is to study the movement of the light spot in the reflected light path through the law of optical reflection, determine the change of the internal pressure of the vacuum glass, and thus determine the change of the vacuum degree. Although this method can detect the direction of the change of the vacuum value, it cannot detect the magnitude of the change of the vacuum value, nor can it detect the magnitude of the strain. Therefore, it is very necessary to design a vacuum glass detection system for detecting vacuum degree and strain. Summary of the invention

[0003] The purpose of the present invention is to address the shortcomings of the current vacuum degree detection method of vacuum glass, which is mainly to study the movement of the light spot in the reflection light path through the law of optical reflection, and to judge the change of the vacuum degree by determining the change of the internal pressure of the vacuum glass. Although this method can detect the direction of the change of the vacuum value, it cannot detect the magnitude of the change of the vacuum value, nor the magnitude of the strain. An online detection system for the vacuum degree and strain of vacuum glass is proposed, which can accurately calculate the magnitude of the vacuum value and the strain value of the vacuum glass.

[0004] The technical solution of the present invention is: a vacuum degree and strain online detection system of vacuum glass, comprising a photosensitive device, a detector amplifier, a photoelectric conversion device, a data analyzer, a display, a convex lens, a CCD element and a signal processor connected to each other; characterized in that: the detection system also includes a suspension guide rail, a rotatable first semiconductor laser and a second semiconductor laser are connected below the suspension guide rail, a support platform is provided below the first semiconductor laser and the second semiconductor laser, a lower layer of glass is provided on the support platform, an upper layer of glass is provided on the lower layer of glass, a vacuum layer is formed between the upper layer of glass and the lower layer of glass by arranging a sealing strip, a reflective lens is provided on the upper layer of glass, the photosensitive device is non-contactly arranged below the support platform, the photosensitive device, the detector amplifier, the photoelectric conversion device, the data analyzer, the display, the CCD element and the signal processor are sequentially connected and arranged on the side of the vacuum layer, and the convex lens is arranged between the CCD element and the vacuum layer.

[0005] The first semiconductor laser and the second semiconductor laser are vertically connected to each other in a rolling manner at a fixed distance below the suspension guide rail. The first semiconductor laser and the second semiconductor laser are both connected by a positioning device, a connecting component and a laser detection head. The positioning device is screwed on the connecting component, and the laser detection head is interference-connected with the connecting component through a rotating shaft.

[0006] The reflective lens is placed flat at the intersection of the diagonal lines of the upper glass layer, and the upper glass layer and the lower glass layer are airtightly fixed by a sealing strip.

[0007] The support platform is in a "U"-shaped structure.

[0008] The photosensitive device is non-contactly arranged below the lower layer of glass and forms an installation angle with the lower layer of glass.

[0009] The convex lens sheet, CCD element and vacuum layer are arranged horizontally and co-center, and the height of the convex lens sheet is greater than the sum of the heights of the upper glass, the glass sealing strip and the lower glass.

[0010] The beneficial effects of the present invention are as follows: the present invention proposes an online detection system for vacuum degree and strain of vacuum glass, which is composed of a suspension guide rail, a semiconductor laser, a reflective lens, an upper layer of glass, a glass sealing strip, a vacuum layer, a support platform, a lower layer of glass, a photosensitive device, a detector amplifier, a photoelectric conversion device, a data analyzer, a display, a convex lens, a CCD element and a signal processor. The present invention can use the concave deformation of the upper and lower layers of glass caused by the pressure difference between the vacuum layer and the external environment, and use the angle of the refracted light of the laser beam entering and exiting the vacuum glass to judge the vacuum degree value of the vacuum glass. Two parallel laser beams are used to impinge on the vacuum glass, and the reflected light is collected by the convex lens and projected onto the CCD element. The signal processor calculates the position of the light spot on the array CCD element through trigonometric functions to obtain the current distance between the upper and lower layers of glass, thereby accurately calculating the strain value of the vacuum glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0012] In the figure: a suspension rail 1, a first semiconductor laser 2, a second semiconductor laser 3, a reflective lens 4, an upper glass 5, a sealing strip 6, a vacuum layer 7, a support platform 8, a lower glass 9, a photosensitive device 10, a detector amplifier 11, a photoelectric conversion device 12, a data analyzer 13, a display 14, a convex lens sheet 15, a CCD element 16, a signal processor 17, a positioning device 21, a connecting component 22, and a laser detection head 23. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings:

[0014] like Figure 1 As shown, a vacuum glass vacuum degree and strain online detection system includes a photosensitive device 10, a detection amplifier 11, a photoelectric conversion device 12, a data analyzer 13, a display 14, a convex lens 15, a CCD element 16 and a signal processor 17 connected to each other; the detection system also includes a suspension rail 1, a first semiconductor laser 2 and a second semiconductor laser 3 that can be rolled are connected below the suspension rail 1, a support platform 8 is provided below the first semiconductor laser 2 and the second semiconductor laser 3, a lower glass 9 is provided on the support platform 8, an upper glass 5 is provided on the lower glass 9, a vacuum layer 7 is formed between the upper glass 5 and the lower glass 9 by arranging a sealing strip 6, a reflective lens 4 is provided on the upper glass 5, the photosensitive device 10 is non-contactly arranged below the support platform 8, the photosensitive device 10, the detection amplifier 11, the photoelectric conversion device 12, the data analyzer 13, the display 14, the CCD element 16 and the signal processor 17 are sequentially connected and arranged on the side of the vacuum layer 7, and the convex lens 15 is arranged between the CCD element 16 and the vacuum layer 7.

[0015] like Figure 1 As shown, a vacuum degree and strain online detection system of vacuum glass, a first semiconductor laser 2 and a second semiconductor laser 3 are vertically connected to the lower side of the suspension guide rail 1 by rolling at a fixed distance, the first semiconductor laser 2 and the second semiconductor laser 3 are connected by a positioning device 21, a connecting component 22 and a laser detection head 23, the positioning device 21 is screwed on the connecting component 22, and the laser detection head 23 is interference connected with the connecting component 22 through a rotating shaft; the reflective lens 4 is placed flat at the intersection of the diagonals of the upper glass 5, and the upper glass 5 and the lower glass 9 are airtightly fixed by the sealing strip 6; the support platform 8 is in a "U"-shaped structure; the photosensitive device 10 is non-contactly arranged below the lower glass 9 and forms an installation angle with the lower glass 9; the convex lens sheet 15, the CCD element 16 and the vacuum layer 7 are horizontally and concentrically arranged, and the height of the convex lens sheet 15 is greater than the sum of the heights of the upper glass 5, the glass sealing strip 6 and the lower glass 9.

[0016] like Figure 1As shown, the working principle of an online detection system for vacuum degree and strain of vacuum glass is as follows: the first semiconductor laser 2 and the second semiconductor laser 3 are vertically connected to the bottom of the suspension rail 1 by rolling at a fixed distance, and the positioning device 21 is screwed on the connecting component 22, which can ensure that the semiconductor laser moves to a specific position on the suspension rail and keeps the lateral distance between the semiconductor lasers unchanged. The laser detection head 23 is interference-connected with the connecting component 22 through a rotating shaft, and the positioning device 21 can ensure that the azimuth angles and heights of the two laser detection heads are the same by driving the rotating shaft to rotate; the reflective lens 4 is placed flat at the intersection of the diagonals of the upper glass 5, which can ensure that when measuring strain, The incident light of the semiconductor laser 2 is reflected onto the convex lens sheet 15, the upper glass 5 and the lower glass 9 are airtightly fixed by the glass sealing strip 6, and the vacuum glass is laid flat on the "U"-shaped support platform 8, which can ensure that the outgoing light of the semiconductor laser 3 can be refracted onto the photosensitive device 10; the photosensitive device 10 is non-contactly installed below the lower glass 9 and has a certain installation angle with the lower glass 9. On the one hand, the photosensitive device 10 can collect information such as the angle and intensity of the outgoing light of the semiconductor laser 3 and transmit the information to the detection amplifier 11, and on the other hand, the photosensitive device 10 can reflect the outgoing light of the semiconductor laser 3 onto the convex lens sheet 15 The photosensitive device 10, the detector amplifier 11, the photoelectric conversion device 12, the data analyzer 13 and the display 14 are connected in sequence through lines, and can modulate the signal and amplify the signal according to the amplitude or frequency change of the pulse laser output light, and convert the light signal passing through the detector amplifier 11 into a digital signal recognized by the computer. The data analyzer 13 analyzes the digital signal and generates a data simulation curve corresponding to the angle between the incident and the outgoing light and the vacuum value, thereby judging the size of the vacuum value, and transmitting the calculated vacuum data to the display 14 through the data line; the convex lens 15, the CCD element 16 and the signal processor 17 are placed in the vacuum tube in sequence. On the glass side, the convex lens sheet 15, the CCD element 16 and the vacuum layer 7 are on the same center horizontal line. The height of the convex lens sheet 15 is greater than the sum of the heights of the upper glass 5, the glass sealing strip 6 and the lower glass 9. This can ensure that the reflected light on the reflective lens 4 and the photosensitive device 10 is reflected onto the convex lens sheet 15 when measuring the strain. The convex lens sheet 15 projects the collected light onto the CCD element 16. The signal processor 17 calculates the position of the light spot on the array CCD element through trigonometric functions to obtain the current distance between the upper and lower glasses. Combined with the relationship between the current distance of the vacuum glass and the original distance and the strain, the strain value of the vacuum glass can be accurately calculated.

Claims

1. A vacuum glass vacuum degree and strain online detection system, comprising a photosensitive device (10), a detector amplifier (11), a photoelectric conversion device (12), a data analyzer (13), a display (14), a convex lens (15), a CCD element (16) and a signal processor (17); characterized in that: The detection system further comprises a suspension rail (1), a first semiconductor laser (2) and a second semiconductor laser (3) being connected and rotatable below the suspension rail (1), a support platform (8) being provided below the first semiconductor laser (2) and the second semiconductor laser (3), a lower glass (9) being provided on the support platform (8), an upper glass (5) being provided on the lower glass (9), a vacuum layer (7) being formed between the upper glass (5) and the lower glass (9) by providing a sealing strip (6), a reflective lens (4) being provided on the upper glass (5), the photosensitive device (10) being non-contactly provided below the support platform (8), the photosensitive device (10), the detector amplifier (11), the photoelectric conversion device (12), the data analyzer (13), the display (14), the CCD element (16) and the signal processor (17) being provided on the side of the vacuum layer (7), and the convex lens sheet (15) being provided between the CCD element (16) and the vacuum layer (7); The first semiconductor laser (2) and the second semiconductor laser (3) are vertically connected to the lower side of the suspension rail (1) in a rolling manner at a fixed distance. The first semiconductor laser (2) and the second semiconductor laser (3) are both connected by a positioning device (21), a connecting component (22) and a laser detection head (23). The positioning device (21) is screwed onto the connecting component (22). The laser detection head (23) is interference-connected with the connecting component (22) via a rotating shaft. The positioning device (21) can ensure that the two laser detection heads have the same azimuth angle and height by driving the rotating shaft to rotate. The reflective lens (4) is placed flat at the intersection of the diagonal lines of the upper glass (5), and can ensure that the incident light of the first semiconductor laser (2) is reflected onto the convex lens sheet (15) when measuring strain. The upper glass (5) and the lower glass (9) are airtightly fixed by a sealing strip (6); The support platform (8) is in the shape of a Chinese character “U”; The photosensitive device (10) is non-contactly arranged below the lower glass (9) and forms an installation angle with the lower glass (9); on the one hand, the photosensitive device (10) can collect the angle and intensity information of the light emitted by the second semiconductor laser (3) and transmit the information to the detector amplifier (11); on the other hand, the photosensitive device (10) can reflect the light emitted by the second semiconductor laser (3) onto the convex lens sheet (15); the photosensitive device (10), the detector amplifier (11), the photoelectric conversion device (12), the data analyzer (13) and the display (14) are connected in sequence through lines, and can modulate the signal and amplify the signal according to the amplitude or frequency change of the pulse laser light emitted, and convert the light signal passing through the detector amplifier (11) into a digital signal recognized by a computer; the data analyzer (13) analyzes the digital signal and generates a data simulation curve corresponding to the angle between the incident and the outgoing light and the vacuum value, thereby judging the vacuum value, and transmitting the calculated vacuum data to the display (14) through the data line; A convex lens sheet (15), a CCD element (16) and a signal processor (17) are sequentially placed on the side of the vacuum glass. The convex lens sheet (15), the CCD element (16) and the vacuum layer (7) are arranged horizontally and co-centrically. The height of the convex lens sheet (15) is greater than the sum of the heights of the upper glass layer (5), the glass sealing strip (6) and the lower glass layer (9). This ensures that when measuring strain, the reflected light on the reflective lens (4) and the photosensitive device (10) is reflected onto the convex lens sheet (15). The convex lens sheet (15) projects the collected light onto the CCD element (16). The signal processor (17) calculates the position of the light spot on the array CCD element through trigonometric functions to obtain the current distance between the upper and lower glass layers. The strain value of the vacuum glass can be accurately calculated by combining the relationship between the current distance of the vacuum glass and the original distance and strain.

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