Improved stroboscopic detection device

Abstract

The utility model relates to an improved stroboscopic detection device, which comprises a shell and a stroboscopic detection unit, a cavity for accommodating the stroboscopic detection unit is arranged in the shell, and the stroboscopic detection unit comprises a light identification module for receiving light to be detected. The device is characterized in that the shell is provided with a first light hole and a second light hole for light to be detected to pass through; the first light hole is arranged opposite to the light identification module, and the second light hole and the light identification module are arranged in a staggered mode. The first light-transmitting hole directly faces the light identification module, the second light-transmitting hole is arranged beside the first light-transmitting hole and does not directly face the light identification module, the first light-transmitting hole is used as a main detection hole, the second light-transmitting hole is used as a secondary detection hole, and the second light-transmitting hole expands the detected range on a screen. And meanwhile, the light received by the light identification module does not exceed the threshold value of the light identification module, so that the stroboscopic detection result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of optical measurement and detection, in particular to an improved stroboscopic detection device. Background Art

[0002] In recent years, with the widespread popularity of electronic products such as mobile phones and computers, people spend more and more time facing electronic screens in their study, work and life. However, the low refresh rate and brightness dimming method can cause flicker problems. Screen flicker is an important light quality factor of the screen. Poor screen flicker not only affects people's perception of light quality and causes discomfort, but also stimulates people's visual nerves and causes health problems such as visual fatigue, juvenile myopia and migraine. The impact of screen flicker on the human body has received more and more attention, and how to detect screen flicker has also received more and more attention.

[0003] The screen flicker detection instrument is provided with an optical recognition module for receiving light signals. A light-transmitting hole is provided on the outer shell of the screen flicker detection instrument and at a position corresponding to the light recognition module. The light emitted by the screen to be detected passes through the light-transmitting hole to reach the light recognition module, and is thus received by the light recognition module.

[0004] However, the existing screen flicker detection instruments still have the following shortcomings: (1) Due to the area and position limitations of the light-transmitting hole, the range of light received by the optical recognition module is not wide enough and the light is uneven, making the detection result inaccurate; (2) If the area of ​​the light-transmitting hole corresponding to the optical recognition module is too large, the light intensity received by the optical recognition module will exceed the threshold of the optical recognition module, reducing the accuracy of the detection result. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an improved stroboscopic detection device with high detection accuracy in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: an improved stroboscopic detection device, comprising a shell and a stroboscopic detection unit, the shell having a chamber for accommodating the stroboscopic detection unit, the stroboscopic detection unit comprising an optical recognition module for receiving the light to be detected, characterized in that: the shell is provided with a first light-transmitting hole and a second light-transmitting hole for the light to be detected to pass through; the first light-transmitting hole is arranged opposite to the optical recognition module, and the second light-transmitting hole is arranged offset from the optical recognition module.

[0007] In other words, along the extension direction of the depth of the first light-transmitting hole, the projection of the first light-transmitting hole on the stroboscopic detection unit at least partially overlaps with the optical recognition module; along the extension direction of the depth of the second light-transmitting hole, the projection of the second light-transmitting hole on the stroboscopic detection unit does not overlap with the optical recognition module. The first light-transmitting hole is directly opposite to the optical recognition module, and the light passing through the first light-transmitting hole directly shines on the optical recognition module, while the second light-transmitting hole is arranged next to the first light-transmitting hole. The added second light-transmitting hole is used to increase the range of the screen to be detected. Because the second light-transmitting hole is not directly opposite to the optical recognition module, the light intensity received by the optical recognition module will not exceed the threshold of the optical recognition module.

[0008] In order to increase the range of light collection, at least two second light-transmitting holes are provided; the first light-transmitting hole is square, and the second light-transmitting hole is strip-shaped; and the second light-transmitting holes are parallel to each other.

[0009] In order to reduce the area occupied by the first light-transmitting hole and the second light-transmitting hole in the housing, the first light-transmitting hole is located on the extension line of the length direction of at least one of the second light-transmitting holes. There are many options for the arrangement positions of the first light-transmitting hole and the second light-transmitting hole. In other embodiments, the first light-transmitting hole can be located in the middle of the interval between two second light-transmitting holes.

[0010] In order to reasonably control the light transmitted through the second light-transmitting hole to be received by the optical recognition module, a shading structure formed from the inner wall of the shell and extending toward the inside of the shell is provided around the first light-transmitting hole. The shading structure is used to reduce the light entering from the second light-transmitting hole and directed toward the optical recognition module.

[0011] Preferably, the light shielding structure includes two parallel plates parallel to the length direction of the second light-transmitting hole and a vertical plate perpendicular to the length direction of the second light-transmitting hole, the vertical plates are respectively connected to the two parallel plates to form three sides of the light shielding structure, the vertical plates are located on one side of the first light-transmitting hole and close to the second light-transmitting hole, and a notch is provided at the upper end of the vertical plate. The existence of the notch ensures that the light transmitted through the second light-transmitting hole is received by the optical recognition module, and also ensures that the light intensity of the light transmitted through the second light-transmitting hole received by the optical recognition module does not exceed the receiving threshold of the optical recognition module.

[0012] In order to intuitively display the detection results of the stroboscopic detection unit, the stroboscopic detection unit also includes a screen display module; the shell is a square body, and the shell includes a first surface and a second surface that are arranged opposite to each other, the first surface is provided with the first light-transmitting hole and the second light-transmitting hole, the first light-transmitting hole is arranged on the first side of the first surface, the second light-transmitting hole is arranged on the second side of the first surface, and the second surface is provided with a through hole for the screen display module to display outward. The light-transmitting hole for light collection is arranged opposite to the screen display module, and when the user aligns the light-transmitting hole with the screen to be detected, the screen display module faces the user, and this design structure is convenient for users to use.

[0013] Furthermore, the shell includes a first shell and a second shell assembled together, the first shell has an upper opening, the second shell has a lower opening, the upper opening and the lower opening are arranged opposite to each other and enclose the above-mentioned chamber.

[0014] Furthermore, the first light-transmitting hole and the second light-transmitting hole are arranged on the first shell, and the mounting hole is arranged on the second shell.

[0015] In order to detect stroboscopic frequency with high accuracy, the stroboscopic frequency detection unit further includes an optical signal processing module and a microcontroller, the optical recognition module is connected to the optical signal processing module, the optical signal processing module is connected to the microcontroller, and the microcontroller is connected to the screen display module.

[0016] Furthermore, the optical signal processing module is used to convert the optical signal recognized by the optical recognition module into a digital signal, and the optical signal processing module is configured with a modal recognition algorithm, an optical feature analysis algorithm and a filtering algorithm.

[0017] Furthermore, the stroboscopic detection unit also includes a battery management module.

[0018] Compared with the prior art, the advantages of the utility model are: the first light-transmitting hole is opposite to the optical recognition module, the second light-transmitting hole is arranged next to the first light-transmitting hole and is not opposite to the optical recognition module, the first light-transmitting hole is used as the main detection hole, and the second light-transmitting hole is used as the secondary detection hole. The second light-transmitting hole expands the range of detection on the screen, and at the same time will not make the light received by the optical recognition module exceed the threshold of the optical recognition module, so that the detection result of the flicker is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the stroboscopic detection device in the embodiment of the utility model;

[0020] Figure 2 for Figure 1 Exploded view of the medium strobe detection device;

[0021] Figure 3for Figure 1 A cross-sectional view of a medium strobe detection device;

[0022] Figure 4 This is a schematic diagram of the structure of the first housing at a first angle in an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the first housing at a second angle in an embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the second housing in the embodiment of the utility model;

[0025] Figure 7 1 is a connection diagram of the components of the stroboscopic detection unit in the embodiment of the present utility model. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 7 The figure shows a preferred embodiment of the improved stroboscopic detection device of the utility model. The improved stroboscopic detection device comprises a housing 1 and a stroboscopic detection unit 2. The housing 1 has a chamber 1a inside, and the stroboscopic detection unit 2 is arranged in the chamber 1a.

[0028] like Figure 2 As shown, the shell 1 is composed of a first shell 11 and a second shell 12, both of which are square bodies. The first shell 11 has an upper opening, and the second shell 12 has a lower opening, and the upper opening is arranged opposite to the lower opening; four connecting columns 113 extending toward the second shell 12 are arranged at the four corners of the first shell 11, and four first connecting holes 122 corresponding to the four connecting columns 113 are arranged at the four corners of the second shell 12, and second connecting holes 20 are arranged at the four corners of the stroboscopic detection unit 2. Screws pass through the first connecting holes 122 and the second connecting holes 20 in sequence and connect with the corresponding connecting columns 113 to connect the first shell 11, the stroboscopic detection unit 2 and the second shell 12 together. After the first shell 11 and the second shell 12 are connected, the shell 1 is also a square body and is flat.

[0029] like Figure 7As shown, the stroboscopic detection unit 2 includes a light recognition module 21, a screen display module 22, a light signal processing module 23, a microcontroller 24 and a battery management module 25. The light recognition module 21 is connected to the light signal processing module 23. The light signal processing module 23 and the battery management module 25 are both connected to the microcontroller 24. The microcontroller 24 is connected to the screen display module 22. The light recognition module 21 is used to receive the light to be detected and send the detected light signal to the light signal processing module 23; the light signal processing module 23 is used to convert the light signal recognized by the light recognition module 21 into a digital signal. The light signal processing module 23 is configured with a modal recognition algorithm, an optical feature analysis algorithm and a filtering algorithm; the light signal processing module 23 sends the processing result to the microcontroller 24, and then the microcontroller 24 displays the detection result through the screen display module 22.

[0030] The two faces with the largest area that are arranged opposite to each other on the flat shell 1 are defined as the first face and the second face. The first face is provided with a first light-transmitting hole 111 and a second light-transmitting hole 112 for the light to be detected to pass through. The first light-transmitting hole 111 is in the shape of a square circle, and the second light-transmitting hole 112 is in the shape of a long strip. A plurality of second light-transmitting holes 112 are arranged on the surface of the shell 1 and are parallel to each other. In order to reduce the occupation of the first light-transmitting hole 111 and the second light-transmitting hole 112 on the shell area, the first light-transmitting hole 111 is located on the extension line of the length direction of at least one second light-transmitting hole 112, that is, the first light-transmitting hole 111 is arranged on the first side of the first face, and the second light-transmitting hole 112 is arranged on the second side of the first face. The second face is provided with a through hole 121 for the screen display module 22 to display outward. The screen display module is arranged opposite to the first light-transmitting hole 111 and the second light-transmitting hole 112 for light collection. When the user aligns the first light-transmitting hole 111 and the second light-transmitting hole 112 with the screen to be detected, the screen display module 22 faces the user. This design structure is convenient for the user to use. In this embodiment, the first light-transmitting hole 111 and the second light-transmitting hole 112 are only arranged on the first housing 11, and the through hole 121 is only arranged on the second housing 12.

[0031] Along the depth extension direction of the first light-transmitting hole 111, the projection of the first light-transmitting hole 111 on the stroboscopic detection unit 2 at least partially overlaps with the optical recognition module 21 disposed inside the housing 1; along the depth extension direction of the second light-transmitting hole 112, the projection of the second light-transmitting hole 112 on the stroboscopic detection unit 2 is separated from the optical recognition module 21. In other words, the first light-transmitting hole 111 is directly opposite to the optical recognition module 21, and the light passing through the first light-transmitting hole 111 is directly irradiated on the optical recognition module 21, while the second light-transmitting hole 112 is disposed beside the first light-transmitting hole 111, and the light passing through the second light-transmitting hole 112 is not directly irradiated on the optical recognition module 21. The added second light-transmitting hole 112 is used to increase the range of the screen to be detected, and because the second light-transmitting hole 112 is not directly opposite to the optical recognition module 21, the light intensity received by the optical recognition module will not exceed the threshold value of the optical recognition module.

[0032] In addition, if Figure 3 , 4 As shown, a shading plate 114 extends from the inner wall of the first shell 11 toward the inside of the shell 1. The shading plate 114 surrounds the first light-transmitting hole 111 to reduce the light incident from the second light-transmitting hole 112 from being received by the optical recognition module 21. Specifically, the shading plate 114 includes two parallel plates parallel to the length direction of the second light-transmitting hole 112 and a vertical plate perpendicular to the length direction of the second light-transmitting hole 112. The vertical plate and the two parallel plates form three sides of the shading plate 114. The vertical plate is located on the side of the first light-transmitting hole 111 close to the second light-transmitting hole 112. A notch 115 is also provided at the upper end of the vertical plate. The existence of the notch 115 ensures that the light transmitted from the second light-transmitting hole 112 is received by the optical recognition module 21, and the light intensity of the light transmitted from the second light-transmitting hole 112 received by the optical recognition module 21 does not exceed the receiving threshold of the optical recognition module 21.

Claims

1. An improved stroboscopic detection device, comprising a housing (1) and a stroboscopic detection unit (2), wherein the housing (1) has a chamber (1a) for accommodating the stroboscopic detection unit (2), and the stroboscopic detection unit (2) comprises a light recognition module (21) for receiving light to be detected, characterized in that: The housing (1) is provided with a first light-transmitting hole (111) and a second light-transmitting hole (112) for the light to be detected to pass through; the first light-transmitting hole (111) is arranged directly opposite to the optical recognition module (21), and the second light-transmitting hole (112) is arranged offset from the optical recognition module (21).

2. The stroboscopic detection device according to claim 1, characterized in that: At least two second light-transmitting holes (112) are provided; the first light-transmitting holes (111) are square, and the second light-transmitting holes (112) are strip-shaped; and the second light-transmitting holes (112) are parallel to each other.

3. The stroboscopic detection device according to claim 2, characterized in that: The first light-transmitting hole (111) is located on an extension line of at least one of the second light-transmitting holes (112) in the length direction.

4. The stroboscopic detection device according to claim 3, characterized in that: A light shielding structure (114) is provided around the first light-transmitting hole (111), which is formed from the inner wall of the shell (1) and extends toward the inside of the shell (1). The light shielding structure (114) is used to reduce the light that enters from the second light-transmitting hole (112) and is emitted toward the optical recognition module (21).

5. The stroboscopic detection device according to claim 4, characterized in that: The light-shielding structure (114) comprises two parallel plates parallel to the length direction of the second light-transmitting hole (112) and a vertical plate perpendicular to the length direction of the second light-transmitting hole (112); the vertical plates are respectively connected to the two parallel plates to form three side surfaces of the light-shielding structure (114); the vertical plates are located on one side of the first light-transmitting hole (111) and close to the second light-transmitting hole (112); and a notch (115) is provided at the upper end of the vertical plate.

6. The stroboscopic detection device according to claim 5, characterized in that: The stroboscopic detection unit (2) also includes a screen display module (22); the shell (1) is a square body, and the shell (1) includes a first surface and a second surface arranged opposite to each other, the first surface is provided with the first light-transmitting hole (111) and the second light-transmitting hole (112), the first light-transmitting hole (111) is arranged on a first side of the first surface, the second light-transmitting hole (112) is arranged on a second side of the first surface, and the second surface is provided with a through hole (121) for the screen display module (22) to display outwards.

7. The stroboscopic detection device according to claim 6, characterized in that: The housing (1) comprises a first shell (11) and a second shell (12) which are assembled together, the first shell (11) having an upper opening, the second shell (12) having a lower opening, the upper opening and the lower opening being arranged opposite to each other and enclosing the above-mentioned chamber (1a).

8. The stroboscopic detection device according to claim 7, characterized in that: The first light-transmitting hole (111) and the second light-transmitting hole (112) are arranged on the first housing (11), and the through hole (121) is arranged on the second housing (12).

9. The stroboscopic detection device according to any one of claims 6 to 8, characterized in that: The stroboscopic detection unit (2) further comprises a light signal processing module (23) and a microcontroller (24); the light recognition module (21) is connected to the light signal processing module (23); the light signal processing module (23) is connected to the microcontroller (24); and the microcontroller (24) is connected to the screen display module (22).

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