An adjustable dual-color water level gauge with red and green light sources

Abstract

This utility model discloses an adjustable red-green light source for a dual-color water level gauge, relating to the field of electronic technology. It includes a horizontally placed substrate, with a square wave generator and a drive circuit respectively located at both ends of the top of the substrate. A duty cycle adjustment circuit is also located at the center of the top of the substrate. The drive circuit is electrically connected to both the square wave generator and the duty cycle adjustment circuit. The square wave generator and the duty cycle adjustment circuit are electrically connected to each other. Multiple positioning slots are formed on the top of the substrate. This utility model, through the cooperation of the square wave generator, the duty cycle adjustment circuit, and the drive circuit, can achieve a wide range of brightness adjustment for the light source, adapting to different application requirements. The light source is flicker-free, provides stable and uniform illumination in the camera, meeting the adjustment requirements of the red-green light source for a dual-color water level gauge, and ensuring the display effect of the water level gauge's liquid level in the camera.

Description

Technical Field

[0001] This utility model relates to the field of electronic technology, specifically to an adjustable dual-color water level gauge with red and green light sources. Background Technology

[0002] In a dual-color water level gauge, red and green light sources are the core components for achieving "visual differentiation of liquid level". Their working principle, selection and design, and coordination with the dimming circuit directly determine the display effect of the water level gauge in the camera (such as the clarity of the liquid level boundary, no flicker, and adaptation to different lighting scenarios).

[0003] However, the existing dual-color water level gauges use a resistor voltage divider to adjust the brightness of the light source, which has disadvantages such as a small dimming range, large resistance heat generation, and easy damage to the voltage divider resistor at high power. To address these issues, we designed an adjustable dual-color water level gauge red and green light source. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable dual-color water level gauge with red and green light sources to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides an adjustable dual-color water level gauge with red and green light sources, including a horizontally placed substrate. A square wave generator and a drive circuit are respectively arranged at both ends of the top of the substrate. A duty cycle adjustment circuit is also arranged at the center of the top of the substrate. The drive circuit is electrically connected to both the square wave generator and the duty cycle adjustment circuit. The square wave generator and the duty cycle adjustment circuit are electrically connected to each other.

[0006] Furthermore, the top of the substrate is provided with multiple positioning slots, and the square wave generator, duty cycle adjustment circuit and drive circuit are respectively located in the multiple positioning slots. Two positioning plates are symmetrically slidably arranged in the positioning slots, and springs are provided between the positioning plates and the inner sidewalls of the positioning slots. Multiple positioning components are provided on both the front and rear sides of the substrate, and the positioning components are connected to the positioning plates.

[0007] Furthermore, the positioning element includes a screw and a torsion block. The screw is threaded onto the outside of the base plate, one end of the screw abuts against the outside of the positioning plate, and the other end of the screw is fixedly connected to the torsion block.

[0008] Furthermore, multiple reinforcing heads are fixedly installed around the outer circumference of the torsion block along the vertical direction.

[0009] Furthermore, the outer surface of the reinforcing head is provided with anti-slip texture.

[0010] Furthermore, each of the positioning plates has four springs on one side, and the four springs are respectively installed at the four corners of one side of the positioning plate.

[0011] Furthermore, a telescopic rod is provided between the positioning plate and the inner wall of the positioning groove. The number of telescopic rods corresponds to the number of springs, and the springs are movably sleeved on the telescopic rods.

[0012] Furthermore, positioning plates are fixedly installed on the bottom of both sides of the substrate, and multiple positioning bolts are threaded into the top of the positioning plates.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by combining the square wave generator, duty cycle adjustment circuit and drive circuit, the brightness of the light source can be adjusted over a wide range to adapt to different occasions. The light source is flicker-free in the camera, emits stable light, and provides uniform illumination, which meets the adjustment requirements of the red and green light sources of the dual-color water level gauge, thus ensuring the display effect of the liquid level of the dual-color water level gauge in the camera.

[0014] Compared with the prior art, the beneficial effects of this utility model are: by rotating the torsion block, the screw can be rotated while pushing the positioning plate to slide in the positioning groove and stretching the spring, so that multiple positioning plates can stably position the square wave generator, duty cycle adjustment circuit and drive circuit on the base plate, ensuring stability during use. Conversely, the positioning plates can release the positioning of the square wave generator, duty cycle adjustment circuit and drive circuit, making it convenient to disassemble, repair and replace parts. Attached Figure Description

[0015] Figure 1 This is a top view of the external three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention viewed from the outside. Figure 3 This is a three-dimensional structural diagram of the external side view of this utility model; Figure 4 This utility model Figure 1 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Base plate; 2. Square wave generator; 3. Duty cycle adjustment circuit; 4. Drive circuit; 5. Positioning groove; 6. Positioning plate; 7. Spring; 8. Screw; 9. Torque block; 10. Telescopic rod; 11. Reinforcing head; 12. Positioning piece; 13. Positioning bolt. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: an adjustable dual-color water level gauge red and green light source, including a horizontally placed substrate 1, with a square wave generator 2 and a drive circuit 4 respectively arranged at both ends of the top of the substrate 1, and a duty cycle adjustment circuit 3 arranged at the center of the top of the substrate 1. The drive circuit 4 is electrically connected to both the square wave generator 2 and the duty cycle adjustment circuit 3, and the square wave generator 2 and the duty cycle adjustment circuit 3 are electrically connected to each other.

[0019] In practical implementation, by turning on the square wave generator 2, a square wave signal of fixed frequency can be output. By turning on the duty cycle adjustment circuit 3, the duty cycle can be adjusted using software programming that is implanted later. The duty cycle adjustment range is between 10% and 90%. By turning on the driver circuit 4, the weak signal output by the duty cycle adjustment circuit 3 can be amplified to drive the light source of the dual-color water level gauge, thereby achieving a wide range of brightness adjustment of the light source to adapt to different occasion requirements. The light source is flicker-free in the camera, emits stable light, and provides uniform illumination, which meets the adjustment requirements of the red and green light sources of the dual-color water level gauge, ensuring the display effect of the liquid level of the dual-color water level gauge in the camera.

[0020] The square wave generator 2 is composed of a timer, a chip such as the NE555, or a timer module of a microcontroller. For example, a multivibrator circuit based on the 555 timer is used. The duty cycle adjustment circuit 3 is usually an analog circuit, often composed of potentiometers, resistors, capacitors, and other components. Finally, the driver circuit 4 is usually composed of MOSFETs, transistors, current-limiting resistors, and driver chips. Since the components of the square wave generator 2, duty cycle adjustment circuit 3, and driver circuit 4 are all existing technologies, they will not be discussed in detail.

[0021] See Figure 1-4 The top of the substrate 1 is provided with multiple positioning slots 5. The square wave generator 2, the duty cycle adjustment circuit 3 and the drive circuit 4 are respectively located in the multiple positioning slots 5. Two positioning plates 6 are symmetrically slidably arranged in the positioning slots 5. A spring 7 is provided between the positioning plate 6 and the inner side wall of the positioning slot 5. Multiple positioning components are provided on the front and rear sides of the substrate 1. The positioning components are connected to the positioning plates 6. The positioning components include a screw 8 and a torsion block 9. The screw 8 is threaded into the outside of the substrate 1. One end of the screw 8 abuts against the outside of the positioning plate 6. The other end of the screw 8 is fixedly connected to the torsion block 9.

[0022] In practical implementation, based on the above implementation, by rotating the torsion block 9, the screw 8 can be rotated while pushing the positioning plate 6 to slide in the positioning groove 5, and stretching the spring 7, so that multiple positioning plates 6 can stably position the square wave generator 2, duty cycle adjustment circuit 3 and drive circuit 4 on the base plate 1, ensuring stability during use. Conversely, the positioning plates 6 can be released from positioning the square wave generator 2, duty cycle adjustment circuit 3 and drive circuit 4, making it convenient for disassembly, maintenance and replacement of parts.

[0023] See Figure 1-4 Multiple reinforcing heads 11 are fixedly installed vertically around the outer circumference of the torsion block 9. This allows for better force application when personnel rotate the torsion block 9.

[0024] See Figure 1-4 The outer surface of the reinforced head 11 is provided with anti-slip texture.

[0025] In practice, based on the above implementation, the friction between the person's hand and the reinforcing head 11 can be increased, which helps to solve the problem of slippage when the person rotates the reinforcing head 11.

[0026] See Figure 1-4 Each positioning plate 6 has four springs 7 on one side, and the four springs 7 are installed at the four corners of one side of the positioning plate 6. This ensures that the four corners of one side of the positioning plate 6 are subjected to balanced forces, thereby avoiding the problem of the positioning plate 6 tilting during movement.

[0027] See Figure 1-4 A telescopic rod 10 is also provided between the positioning plate 6 and the inner wall of the positioning groove 5. The number of telescopic rods 10 corresponds to the number of springs 7, and the springs 7 are movably sleeved on the telescopic rods 10.

[0028] In practice, based on the above implementation, the positioning plate 6 can only slide along the direction of the telescopic end of the telescopic rod 10 to avoid the problem of movement deviation.

[0029] See Figure 1-4 Positioning plates 12 are fixedly installed on the bottom of both sides of the substrate 1, and multiple positioning bolts 13 are threaded into the top of the positioning plates 12. This facilitates the installation of the substrate 1 inside the housing of the dual-color water level gauge.

[0030] Working principle: Before use, all electrical components involved in the light source device need to be connected to an external power source, or a battery pack needs to be installed in an area outside the substrate 1 that does not obstruct other components. Then, the battery pack is connected to the electrical components through wiring. It is also necessary to avoid the wiring from getting tangled due to the movement of the components. Wiring needs to be buried and planned and organized to provide power to the electrical components, thereby ensuring the normal operation and switching of the electrical components. Since connecting the electrical components to an external power source or setting up a battery pack for power supply are existing technologies and are not problems that need to be solved in the background technology of this specification, they will not be explained in detail.

[0031] In use, by turning on the square wave generator 2, a square wave signal of fixed frequency can be output. By turning on the duty cycle adjustment circuit 3, the duty cycle can be adjusted using the later-implemented software programming. The duty cycle adjustment range is between 10% and 90%. By turning on the driver circuit 4, the weak signal output by the duty cycle adjustment circuit 3 can be amplified to drive the light source of the dual-color water level gauge, thereby achieving a wide range of brightness adjustment of the light source to adapt to different occasion requirements. The light source is flicker-free in the camera, emits stable light, and provides uniform illumination, meeting the adjustment requirements of the red and green light sources of the dual-color water level gauge, and ensuring the display effect of the liquid level of the dual-color water level gauge in the camera.

[0032] During the above operation, by rotating the torsion block 9, the screw 8 can be rotated while pushing the positioning plate 6 to slide in the positioning groove 5 and stretching the spring 7. This allows multiple positioning plates 6 to stably position the square wave generator 2, duty cycle adjustment circuit 3, and drive circuit 4 on the base plate 1, ensuring stability during use. Conversely, rotating the torsion block 9 releases the positioning plates 6 from the square wave generator 2, duty cycle adjustment circuit 3, and drive circuit 4, facilitating disassembly, maintenance, and component replacement.

Claims

1. An adjustable bi-colour water level gauge red-green light source comprising a horizontally placed substrate (1), characterised in that, A square wave generator (2) and a drive circuit (4) are respectively provided at both ends of the top of the substrate (1). A duty cycle adjustment circuit (3) is also provided at the center of the top of the substrate (1). The drive circuit (4) is electrically connected to the square wave generator (2) and the duty cycle adjustment circuit (3). The square wave generator (2) and the duty cycle adjustment circuit (3) are electrically connected to each other.

2. An adjustable bi-colour water level indicator red-green light source as claimed in claim 1, characterized in that: The top of the substrate (1) is provided with multiple positioning slots (5). The square wave generator (2), duty cycle adjustment circuit (3) and drive circuit (4) are respectively located in the multiple positioning slots (5). Two positioning plates (6) are symmetrically slidably arranged in the positioning slots (5). A spring (7) is provided between the positioning plate (6) and the inner side wall of the positioning slot (5). Multiple positioning components are provided on both the front and rear sides of the substrate (1). The positioning components are connected to the positioning plates (6).

3. An adjustable bi-coloured water level indicator red-green light source as claimed in claim 2, characterized in that: The positioning component includes a screw (8) and a torsion block (9). The screw (8) is threaded into the outside of the base plate (1). One end of the screw (8) abuts against the outside of the positioning plate (6), and the other end of the screw (8) is fixedly connected to the torsion block (9).

4. An adjustable bi-coloured water level indicator red-green light source as claimed in claim 3, characterized in that: Multiple reinforcing heads (11) are fixedly installed around the outer circumference of the torsion block (9) in the vertical direction.

5. The adjustable dual-color water level gauge red-green light source as described in claim 4, characterized in that: The outer surface of the reinforcing head (11) is provided with anti-slip texture.

6. The adjustable dual-color water level gauge red-green light source as described in claim 2, characterized in that: The number of springs (7) on one side of each positioning plate (6) is four, and the four springs (7) are respectively installed at the four corners on one side of the positioning plate (6).

7. The adjustable dual-color water level gauge red-green light source as described in claim 2, characterized in that: A telescopic rod (10) is also provided between the positioning plate (6) and the inner wall of the positioning groove (5). The number of telescopic rods (10) corresponds to the number of springs (7), and the springs (7) are movably sleeved on the telescopic rods (10).

8. The adjustable dual-color water level gauge red-green light source as described in claim 1, characterized in that: Positioning plates (12) are fixedly installed on the bottom of both sides of the substrate (1), and multiple positioning bolts (13) are threaded into the top of the positioning plates (12).

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