Handheld acid-base value detector

Abstract

The present application provides a handheld pH detector including a housing, a detection system, an optical detection system, and a power generation system. The detection system is disposed in the housing and has a roller set, a conveyor belt, and a test strip. The test strip is disposed on the conveyor belt, and the conveyor belt extends from the roller set to one end of the housing and protrudes out of the housing. The optical detection system has an optical detector disposed in the housing and a display connected to the optical detector. The power generation system has a power storage element disposed in the housing and providing power to the optical detection system, and a roller disposed on the housing and connected to the power storage element. When the test strip contacts a liquid to be tested and produces a color change, the optical detector detects the color of the test strip to determine the pH value of the liquid to be tested.

Description

Technical Field

[0001] This invention relates to a handheld detector, and more particularly to a handheld pH value detector for detecting pH values. Background Technology

[0002] Currently, most pH testers use electrodes to contact the liquid being tested for measurement. However, this method requires cleaning the electrodes before measuring the next liquid. Furthermore, electrodes are consumables and need to be replaced, and calibration is required after replacement, which is quite inconvenient. On the other hand, most testers are battery-powered, and the batteries are prone to wear and tear when not in use for extended periods, requiring recharging or replacement. Summary of the Invention

[0003] This invention relates to a handheld pH meter that can perform multiple tests without the need for electrodes or battery replacement or charging.

[0004] The handheld pH meter of the present invention includes a housing, a detection system, an optical detection system, and a power generation system. The housing has an internal space. The detection system is disposed within the internal space and includes a roller assembly, a conveyor belt, and test strips, wherein the test strips are disposed on the conveyor belt, and the conveyor belt extends from the roller assembly toward one end of the housing and protrudes beyond the housing. The optical detection system includes an optical detector and a display, wherein the optical detector is disposed on the housing, and the display is connected to the optical detector and displays the detection results of the optical detector. The power generation system includes a power storage element and rollers, wherein the power storage element is disposed within the internal space and provides power to the optical detection system, and the rollers are disposed on the housing and connected to the power storage element. When the test strip comes into contact with the liquid to be tested and produces a color change, the optical detector detects the color of the test strip to determine the pH value of the liquid to be tested.

[0005] Based on the above, the handheld pH meter of the present invention uses test strips to directly detect the liquid to be tested, and the used test strips can be discarded directly after the test is completed without cleaning the meter. Furthermore, the handheld pH meter of the present invention uses a power generation system to directly generate electricity for the optical detection system, eliminating the need for charging or battery replacement, making it more convenient to use.

[0006] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0007] The accompanying drawings are included to further illustrate the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0008] Figure 1A This is a schematic diagram of a handheld pH meter according to an embodiment of the present invention;

[0009] Figure 1B yes Figure 1A A schematic diagram of the internal structure of a handheld pH meter;

[0010] Figure 1C yes Figure 1A A partially enlarged schematic diagram of the internal structure of a handheld pH meter during use;

[0011] Figure 2 This is a schematic diagram of the internal structure of a handheld pH meter according to another embodiment of the present invention.

[0012] Explanation of icon numbers

[0013] 100: Handheld pH meter;

[0014] 110: Outer shell;

[0015] 110a: Open;

[0016] 111: Interior space;

[0017] 112: Outer side;

[0018] 113: Inner side;

[0019] 120: Detection system;

[0020] 121: Roller assembly;

[0021] 121a: First roller;

[0022] 121b: Second roller;

[0023] 122: Conveyor belt;

[0024] 123: Test strip;

[0025] 124: First Rotating Wheel;

[0026] 125: Second wheel;

[0027] 126: The third wheel;

[0028] 127: First gear;

[0029] 128: The second gear;

[0030] 130: Optical inspection system;

[0031] 131: Optical detector;

[0032] 132: Monitor;

[0033] 133: Optical identifier;

[0034] 140: Power generation system;

[0035] 141: Energy storage element;

[0036] 142: Roller;

[0037] 143: Miniature generator;

[0038] 143a: Generator shaft;

[0039] S: Testing platform. Detailed Implementation

[0040] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element symbols are used in the drawings and description to denote the same or similar parts.

[0041] Figure 1A This is a schematic diagram of a handheld pH meter according to an embodiment of the present invention. Figure 1B yes Figure 1A A schematic diagram of the internal structure of a handheld pH meter. Please also refer to... Figure 1A and Figure 1B The handheld pH meter 100 of the present invention includes a housing 110, a detection system 120, an optical detection system 130, and a power generation system 140. The housing 110 has an internal space 111. The detection system 120 is disposed in the internal space 111 and includes a roller assembly 121, a conveyor belt 122, and test strips 123, wherein the test strips 123 are disposed on the conveyor belt 122, and the conveyor belt 122 extends from the roller assembly 121 towards one end of the housing 110 and protrudes from the housing 110. The optical detection system 130 includes an optical detector 131 and a display 132, wherein the optical detector 131 is disposed on the housing 110, and the display 132 is connected to the optical detector 131 and displays the detection results of the optical detector 131. The power generation system 140 includes an energy storage element 141 and a roller 142, wherein the energy storage element 141 is disposed in the internal space 111 and provides power to the optical detection system 130, and the roller 142 is disposed on the housing 110 and connected to the energy storage element 141. When the test strip 123 comes into contact with the liquid to be tested and produces a color change, the optical detector 131 detects the color of the test strip 123 to determine the acid or alkalinity of the liquid to be tested.

[0042] Please continue to refer to this. Figure 1BThe outer casing 110 also has an opening 110a disposed at one end of the outer casing 110. The roller assembly 121 further includes a first roller 121a and a second roller 121b, wherein the second roller 121b is disposed between the opening 110a and the first roller 121a, and one end of the conveyor belt 122 is fixed to the first roller 121a, and the other end is fixed to the second roller 121b. More specifically, the detection system 120 also includes a first rotating wheel 124 and a second rotating wheel 125, wherein the first rotating wheel 124 is disposed beside the second roller 121b, and the second rotating wheel 125 is disposed at the opening 110a. That is, the first rotating wheel 124 is disposed between the second roller 121b and the second rotating wheel 125. In this embodiment, the detection system 120 further includes a third rotating wheel 126 disposed between the second rotating wheel 125 and the second roller 121b, and the first rotating wheel 124 and the third rotating wheel 126 are disposed on opposite sides of the second rotating wheel 125. The conveyor belt 122 is sequentially connected to the first roller 124, the second roller 125, the third roller 126, and the second roller 121b via the first roller 121a. The test strip 123 extends from the first roller 121a, through the first roller 124, toward the opening 110a. Conversely, the second roller 125 protrudes from the opening 110a, and the conveyor belt 122 passes around the second roller 125. That is, a portion of the conveyor belt 122 protrudes from the outer casing 110. When the handheld pH meter 100 is to be used to test the liquid, the test strip 123 can be moved via the conveyor belt 122 to the opening 110a, allowing the liquid to react directly with the test strip 123 located at the opening 110a. After testing, the tested portion of the test strip 123 can be removed and discarded. Alternatively, the test strip 123 located at the opening 110a can be removed and reacted with the liquid to be tested. Since the test strips 123 can be discarded after the test, there is no need to clean the handheld pH meter 100.

[0043] As described above, the roller assembly 121 further includes a first gear 127 and a second gear 128, wherein the first gear 127 is pivotally connected to the first roller 121a, and the second gear 128 is pivotally connected to the second roller 121b, and the first gear 127 meshes with the second gear 128. Specifically, when the sliding conveyor belt 122 is in motion, it drives the first roller 121a to rotate, which in turn drives the first gear 127 to rotate. Since the first gear 127 and the second gear 128 are meshed with each other, when the first gear 127 rotates, it drives the second gear 128 to rotate, thereby causing the second roller 121b to roll along with the second gear 128, so that the conveyor belt 122 slides from the first roller 121a through the first roller 124, the second roller 125, and the third roller 126 to the second roller 121b. In this embodiment, the test strip 123 slides along the conveyor belt 122 to the opening 110a, and a portion of the test strip 123 is taken out of the handheld pH meter 100 to react with the liquid to be tested.

[0044] Figure 1C yes Figure 1A This is a partially enlarged schematic diagram of the internal structure of a handheld pH meter during use. Please refer to... Figure 1C In this embodiment, the second roller 125 can be used to press against the conveyor belt 122, causing the test strip 123 located at the opening 110a to contact the testing platform S. The handheld pH meter 100 is then slid to slide the conveyor belt 122, thereby transferring the test strip 123 from the conveyor belt 122 onto the testing platform S. After the required length is removed, the handheld pH meter 100 is removed from the testing platform S, separating the test strip 123 on the testing platform S from the test strip 123 on the conveyor belt 122. That is, the test strip 123 is removed after sliding from the first roller 121a to the opening 110a, therefore the conveyor belt 122 sliding from the opening 110a to the second roller 121b does not have the test strip 123. Furthermore, in this embodiment, the test strip 123 is, for example, a widely used pH test strip.

[0045] Please continue to refer to this. Figure 1B The optical detection system 130 also includes an optical identifier 133, wherein the optical identifier 133 is disposed in the internal space 111, and the optical detector 131 is connected to the optical identifier 133. In this embodiment, the optical detector 131 is disposed on the outer shell 110 and on the outer side 112 of the outer shell 110. When the test strip 123 is taken out and reacts with the liquid to be tested, the color of the test strip 123 changes after the reaction. The optical detector 131 is then moved onto the test strip 123 to detect the color on the test strip 123 and transmit it to the optical identifier 133 for color identification.

[0046] As described above, the power generation system 140 also includes a micro-generator 143, which is disposed in the internal space 111 and connected to the roller 142 and the energy storage element 141. Specifically, the micro-generator 143 includes a power generation shaft 143a, which is connected to the roller 142. When the roller 142 rotates, it drives the rotor inside the micro-generator 143 to rotate via the power generation shaft 143a. The rotor's rotation generates a change in magnetic flux, which is converted into electricity and stored in the energy storage element 141. In this embodiment, rotating the roller 142 once enables the micro-generator 143 to operate the optical detection system 130 once or more. Therefore, when using the handheld pH meter 100 for testing, rotating the roller 142 only requires one rotation to enable the optical detection system 130 to detect the color and determine the pH value of the test strip 123, without the need for disposable or rechargeable batteries. In this embodiment, there is one roller 142, located on the outer side 112 of the housing 110. In other embodiments, there may be two or more rollers 142, located on opposite sides of the housing 110, as long as the rollers 142 are connected to the generator shaft 143a and can drive the micro-generator 143 when rotating. This invention is not limited to this. Furthermore, in this embodiment, the roller 142 may be a roller with a return spring coil, stopping after rotating a certain number of times, sufficient for the micro-generator 143 to produce enough electricity for one test. In other embodiments, the roller 142 may also be an inertial wheel, which can cause the micro-generator 143 to generate electricity through back-and-forth rotation. This invention is not limited to this.

[0047] In detail, the energy storage element 141 is connected to the optical identifier 133, and the optical identifier 133 is connected to the optical detector 131 and the display 132. In this embodiment, the roller 142 can be rotated to drive the micro generator 143 to generate electricity and store it in the energy storage element 141. When the optical detection system 130 is used to perform color recognition on the test strip 123, the energy storage element 141 transmits electricity to the optical identifier 133, thereby enabling the optical detector 131 and the display 132 to operate. After the test strip 123 is taken out and reacts with the liquid to be tested to produce a color change, the optical detector 131 is moved onto the test strip 123 and senses the color of the test strip 123. After sensing the color on the test strip 123, the optical detector 131 transmits the signal to the optical identifier 133 to identify the color and determine the acidity or alkalinity of the liquid to be tested based on the color. Finally, the detection result of the acidity or alkalinity of the liquid to be tested is displayed on the display 132.

[0048] Figure 2 This is a schematic diagram of the internal structure of a handheld pH meter according to another embodiment of the present invention. Please refer to... Figure 2 Another embodiment illustrated therein is similar to Figure 1B The embodiments are largely the same. The difference between the two is that, in Figure 1B In one embodiment, the optical detector 131 is disposed on the housing 110 and located on the outer side 112 of the housing 110. In this embodiment, the optical detector 131 is disposed on the housing 110 and located on the inner side 113 of the housing 110. Specifically, when the handheld pH meter 100 is used to test the liquid to be tested, the test strip 123 is simply slid to the opening 110a, and the liquid to be tested reacts with the test strip 123, causing the test strip 123 to change color. After the test strip 123 changes color, the conveyor belt 122 is slid directly to move the test strip 123 above the optical detector 131 for color detection. That is, in this embodiment, the test strip 123 does not need to be removed from the handheld pH meter 100; it can be tested on the conveyor belt 122 and then directly slid onto the optical detector 131 for sensing, which is more convenient.

[0049] In summary, the handheld pH meter of the present invention uses test strips to directly detect the liquid to be tested, and the used test strips can be discarded directly after the test is completed without cleaning the meter. Furthermore, the handheld pH meter of the present invention uses a power generation system to directly generate electricity for the optical detection system, eliminating the need for charging or battery replacement, making it more convenient to use.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A handheld pH meter, characterized in that, include: The outer shell has an internal space; The detection system is disposed in the internal space and has a roller assembly, a conveyor belt and test strips, wherein the test strips are disposed on the conveyor belt and the conveyor belt extends from the roller assembly toward one end of the housing and protrudes from the housing; An optical inspection system includes an optical detector and a display, wherein the optical detector is mounted on the housing, and the display is connected to the optical detector and displays the detection results of the optical detector; as well as A power generation system includes an energy storage element and rollers, wherein the energy storage element is disposed in the internal space and provides power to the optical detection system, and the rollers are disposed on the housing and connected to the energy storage element. When the test strip comes into contact with the liquid to be tested and produces a color change, the optical detector detects the color of the test strip to determine the acidity or alkalinity of the liquid to be tested.

2. The handheld pH meter according to claim 1, characterized in that, The power generation system also includes a micro generator, which is located in the internal space and connected to the roller and the energy storage element.

3. The handheld pH meter according to claim 2, characterized in that, When the roller rotates, it drives the micro generator to generate electricity and store it in the energy storage element.

4. The handheld pH meter according to claim 1, characterized in that, The roller assembly has a first roller and a second roller, with the first roller positioned next to the second roller.

5. The handheld pH meter according to claim 4, characterized in that, The housing also has an opening at one end, the second roller is disposed between the opening and the first roller, and one end of the conveyor belt is fixed to the first roller, and the other end of the conveyor belt is fixed to the second roller.

6. The handheld pH meter according to claim 5, characterized in that, The detection system also includes a first rotating wheel and a second rotating wheel. The first rotating wheel is disposed next to the first roller, and the second rotating wheel is disposed in the opening. The conveyor belt is connected to the first rotating wheel, the second rotating wheel and the second roller in sequence by the first roller.

7. The handheld pH meter according to claim 4, characterized in that, The roller assembly further includes a first gear and a second gear, wherein the first gear is pivotally connected to the first roller, the second gear is pivotally connected to the second roller, and the first gear meshes with the second gear.

8. The handheld pH meter according to claim 1, characterized in that, The optical detection system also includes an optical identifier, which is disposed in the internal space and connected to the optical detector and the display.

9. The handheld pH meter according to claim 8, characterized in that, The energy storage element is connected to the optical identifier.

10. The handheld pH meter according to claim 1, characterized in that, The optical detector is located on the outside of the housing. When the test strip is taken out and comes into contact with the liquid to be tested, producing a color change, the optical detector is placed above the test strip so that the optical detector can detect the color of the test strip.

11. The handheld pH meter according to claim 1, characterized in that, The optical detector is located inside the housing. When the test strip comes into contact with the test liquid and changes color, the test strip moves with the conveyor belt to a position above the optical detector, allowing the optical detector to detect the color of the test strip.

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