Intelligent watch capable of being used for water quality detection
By integrating a water quality detection chip and a vibration module into a smartwatch, automated water quality detection and active drainage are achieved, solving the problems of manual operation and insufficient waterproof performance in existing technologies, thus improving user experience and device reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENSHI INFORMATION TECH SHANGHAI CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-12
AI Technical Summary
Existing smartwatches' water quality detection functions require manual operation by the user and suffer from insufficient waterproofing and inconvenient drainage, affecting user experience and device reliability.
A smartwatch was designed that integrates a water quality detection chip and a vibration module. It achieves automatic detection and active drainage through a sealed structure and a U-shaped cavity structure, and provides intuitive results with a display screen and a feedback module.
It enables convenient and reliable water quality testing, improves user experience and equipment durability, and ensures the accuracy of test results and the waterproof performance of the equipment.
Smart Images

Figure CN224231759U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of smartwatch technology, and more particularly to a smartwatch that can be used for water quality testing. Background Technology
[0002] Water quality testing has significant practical value in daily life. For example, when traveling, people may need to determine whether the water source in a certain area is safe to drink. However, most watches on the market currently lack water quality testing capabilities, and carrying a separate professional water quality testing device is not only inconvenient but also fails to meet the practical need for testing anytime, anywhere. In contrast, watches, especially smartwatches, are commonly worn devices when people are out and about, possessing a certain level of hardware and user interface. Therefore, how to effectively integrate water quality testing functionality into smartwatches without increasing the user's burden, while enabling real-time monitoring and result presentation, has become a pressing technical challenge. Utility Model Content
[0003] To address the aforementioned technical problems, this application discloses a smartwatch suitable for water quality testing. The smartwatch includes a first layer comprising a display screen and a cavity structure. A water inlet is located at a first end of the cavity structure, a water outlet at a second end, and a detection opening suitable for water quality testing at a third end, situated between the first and second ends. The smartwatch includes a water quality detection chip, whose detection unit is disposed within the cavity structure via the detection opening, suitable for detecting the water flowing through the cavity structure. Water enters the cavity structure through the inlet and exits through the outlet. The display screen is electrically connected to the water quality detection chip to display the water quality test results.
[0004] Optionally, the size of the detection section and the detection opening are matched to form a sealed fit so that water does not flow into the central area of the smartwatch during the detection process.
[0005] Optionally, a waterproof membrane is provided around the detection opening to prevent water in the cavity structure from entering the central area of the smartwatch while the detection part is inserted into the cavity structure.
[0006] Optionally, the detection section is covered with a buffer, which is suitable for improving the waterproof and vibration-resistant capabilities of the water quality detection chip and providing cushioning protection to reduce external impact.
[0007] Optionally, the smartwatch includes a vibration module adapted to transmit vibrational force to the cavity structure after the smartwatch completes water quality testing, causing the water to vibrate and be discharged from the cavity structure through the outlet.
[0008] Optionally, the cavity structure is a U-shaped structure, with the first and second ends being the two ends of the U-shaped structure, and the third end being located in the middle bending area of the U-shaped structure.
[0009] Optionally, the diameters of the inlet and outlet are between 0.5 mm and 1 mm.
[0010] Optionally, the inlet and outlet are equipped with filter membranes configured to filter out impurities in the water.
[0011] Optionally, the smartwatch also includes a second layer and a third layer, with the second layer located between the first and third layers. The water quality detection chip is located in either the first or second layer. The first layer also includes a camera device. The second layer includes an NFC module, a motherboard, and a battery. The third layer includes a SIM card module, a heart rate module, and a charging module.
[0012] Optionally, the first layer includes a feedback module, which is suitable for informing the user through an audio prompt after the water quality test is completed.
[0013] In summary, the smartwatch disclosed in this application that can be used for water quality testing has at least the following beneficial effects:
[0014] (1) It realizes the organic integration of water quality testing function and smartwatch. Users do not need to carry additional professional equipment. They can complete water quality testing while wearing the watch on a daily basis, which significantly improves convenience and practicality.
[0015] (2) Through various feedback methods such as display screen and audio module, the test results can be presented to the user intuitively and in a timely manner, enhancing the user's interactive experience and helping to make timely judgments on drinking water safety;
[0016] (3) It adopts a structural sealing design and a multi-layer module integration method, which ensures the original functions of the smartwatch while taking into account the safety, reliability and system integration of water quality detection, making it suitable for stable use in daily environments;
[0017] (4) The water quality testing process is quite convenient and requires little user intervention. Attached Figure Description
[0018] The following is a brief introduction to the accompanying drawings used in the description of the embodiments of this application:
[0019] Figure 1 This is a structural example diagram of a smartwatch that can be used for water quality testing, provided in an embodiment of this application.
[0020] Figure 2 This is a partial structural enlarged view of a smartwatch that can be used for water quality testing, provided in an embodiment of this application.
[0021] Figure 3This is a side view of a smartwatch that can be used for water quality testing, as provided in an embodiment of this application.
[0022] In the diagram: 10-Smartwatch, 11-House, 12-Display, 13-Cavity structure, 131-Inlet, 132-Outlet, 14-Water quality detection chip, 141-Detection unit, 15-Vibration module, 16-Feedback module, 17-Camera device, 20-First layer, 30-Second layer, 40-Third layer. Detailed Implementation
[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the specific implementation methods of this application will be described below with reference to the accompanying drawings. The accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Adjustments and improvements made without departing from the concept of this application are all within the protection scope of this application.
[0024] To keep the drawings simple, only the parts related to the corresponding embodiments are shown schematically in each figure, and they do not represent the actual structure of the product. In addition, to make the drawings simple and easy to understand, some parts with the same structure or function are only shown schematically in some figures, and there may actually be more or fewer parts with the same structure or function.
[0025] In this application, unless otherwise expressly specified and limited, ordinal numbers, such as "first," "second," etc., are used only to distinguish and describe related objects, and should not be construed as indicating or implying the relative importance or order between related objects; furthermore, they do not represent the quantity of related objects. "Multiple" includes two or more, and other quantifiers are similar. " / " is used to describe the relationship between related objects, indicating an "or" relationship between them. "And / or" is used to describe the relationship between related objects, including any combination relationship between them, such as "a and / or b" including: "a alone," "b alone," or "a and b." "One or more" or "at least one" of multiple objects refers to any object or any combination of multiple objects, such as "one or more of a1, a2, a3" or "at least one of a1, a2, a3" including: "a1 alone," "a2 alone," "a3 alone," "a1 and a2," "a1 and a3," "a2 and a3," or "a1, a2 and a3."
[0026] In daily life, water quality testing has extremely high practical value, especially when people are traveling, engaging in outdoor activities, or living in unfamiliar environments. Assessing the safety of drinking water sources is crucial. For example, in scenarios such as camping in the wild, road trips, or business visits, users may need to quickly determine whether tap water, river water, well water, or other water sources in a particular location are suitable for drinking to prevent gastrointestinal discomfort, infections, or other health risks caused by ingesting contaminated water. Traditional methods often rely on visual observation or olfactory judgment, but these methods are highly subjective, have a high risk of misjudgment, and cannot provide reliable data support. Therefore, using professional water quality testing equipment becomes an optimal solution.
[0027] However, existing professional water quality testing equipment is typically bulky, complex to operate, and expensive, making it unsuitable for portable use and everyday applications. For example, while some portable water quality testing pens are relatively small, they still require separate storage, carrying, and maintenance, and their testing parameters are usually limited (e.g., only measuring TDS and pH). For ordinary users, equipping themselves with such equipment is neither convenient nor practical. Therefore, in real-life situations, users lack convenient and reliable means of water quality testing.
[0028] In contrast, smartwatches have gradually become an indispensable part of people's daily lives in recent years. Smartwatches not only integrate various health and lifestyle functions such as step counting, heart rate monitoring, blood oxygen saturation, activity tracking, and navigation, but also possess a display screen, multi-layered circuitry, sensor interfaces, and the ability to communicate with smartphones, providing a solid hardware foundation and expandability. More importantly, people almost never forget to wear a watch when they go out, especially a smartwatch, making it an ideal platform for integrating water quality monitoring functions.
[0029] In the existing technology, there are some smartwatches that integrate water quality detection functions. For example, patent CN203930369U discloses a multi-functional watch. This multi-functional watch has a detection probe set on its watch case. In use, the user extends the detection probe to make it contact the water, thereby completing the water quality test. After the water quality test is completed, the user retracts the detection probe into the watch case. However, this type of multi-functional watch disclosed in the prior art still has certain limitations and inconveniences in actual use. First, from the perspective of operation, this solution requires the user to manually pull out the detection probe for each test and push it back into the watch case after the test is completed. This is not only cumbersome and reduces the user experience, but also inconvenient to operate in outdoor environments, especially when operating with one hand, wearing gloves, or in slippery environments. Second, this technical solution does not effectively solve the waterproof problem. There is no reliable sealing structure between the detection probe and the watch body, which can easily cause water to seep into the watch case after prolonged use, affecting the watch's circuit system and overall stability, reducing the product's reliability and durability. In addition, the drainage problem after use is not effectively addressed. Because water quality testing is performed through direct contact between the probe and water, residual water is difficult to drain naturally after testing and can easily accumulate in the probe slot, leading to bacterial growth, odors, or cross-contamination during reuse. This structural design not only affects testing accuracy but also hinders long-term cleaning and maintenance of the product.
[0030] Therefore, the design concept of this application is to integrate the water quality detection function into the smartwatch, make the use of the function more convenient and efficient, and at the same time have good waterproof performance and automatic drainage capability, thereby improving the overall user experience and device reliability.
[0031] The following description is in conjunction with the accompanying drawings.
[0032] Please refer to Figures 1 to 3 These figures illustrate an example structure of a smartwatch for water quality testing, as provided in an embodiment of this application. Figure 1 This is a structural example diagram of a smartwatch that can be used for water quality testing, provided in an embodiment of this application. It can be considered as a structural diagram observed from a top view.
[0033] Figure 2 This is a magnified view of a portion of the structure of a smartwatch that can be used for water quality testing, provided in an embodiment of this application. The water quality testing chip and cavity structure are magnified. Figure 3 This application provides a side view of a smartwatch that can be used for water quality testing.
[0034] As shown in the figure, the smartwatch 10 disclosed in this application can be used for water quality testing. The smartwatch 10 includes a first layer 20, a second layer 30, and a third layer 40. The first layer 20 can also be considered as the top layer of the smartwatch 10, the second layer 30 can also be considered as the middle layer of the smartwatch 10, and the third layer 40 can also be considered as the bottom layer of the smartwatch 10. A casing 11 is provided around the smartwatch 10 to maintain its basic structure.
[0035] In the first layer 20, a display screen 12 and a cavity structure 13 are arranged. Simultaneously placing the cavity structure 13 and the display screen 12 on the top layer of the smartwatch 10 improves space utilization efficiency and waterproof reliability. On one hand, this layout prevents the cavity structure 13 from penetrating into the internal circuit layer, saving valuable internal space and facilitating the integration of other functional modules; on the other hand, the cavity structure 13 is directly exposed to the surface, making waterproof encapsulation easier and reducing the risk of water seeping into internal components. Furthermore, users can directly view the test results while testing water quality, making the interaction more intuitive and convenient, thus improving the overall product integration and user experience. The cavity structure 13 further includes a water inlet 131 and a water outlet 132, with the water inlet 131 located at the first end and the water outlet 132 located at the second end. Between the first and second ends of the cavity structure 13, a third end is also included, with an opening suitable for water quality testing. Since external water enters the cavity structure 13 through the inlet 131 and leaves the cavity structure 13 through the outlet 132, the additional detection opening suitable for water quality detection in the cavity structure 13 can effectively detect the water quality of the water flowing through the cavity structure 13.
[0036] The smartwatch 10 includes a water quality detection chip 14, which includes a detection unit 141. The detection unit 141 is disposed within the cavity structure 13 through the aforementioned detection opening, thereby performing water quality detection on the water flowing through the cavity structure 13. The display screen 12 is electrically connected to the water quality detection chip 14. After the water quality detection chip 14 completes the water quality detection, it transmits the detection result to the display screen 12, which then displays the result of the water quality detection.
[0037] The smartwatch of this application eliminates the need for cumbersome user operations when conducting water quality testing. Once the detection unit of the water quality chip comes into contact with the water, the system automatically initiates the testing process, collecting and analyzing water quality parameters, and then intuitively displays the results to the user on the screen. Compared to existing multi-functional watches that require manual operation of the detection probe, this application significantly improves ease of use and user experience, achieving deep integration of water quality testing functionality with the smartwatch. Users do not need to carry additional professional testing equipment; they can complete water quality testing simply with their everyday smartwatch, greatly enhancing the product's practicality and portability. In other words, this application integrates a special composite water quality sensor onto the display screen to achieve real-time monitoring of nearby water quality and intuitively displays the monitoring data on the smartwatch screen, providing users with convenient and real-time water quality information, broadening the application areas of smartwatches, and enhancing users' awareness and ability to respond to their living environment.
[0038] In some embodiments of this application, the water quality detection chip 14 may be a composite water quality sensor, which can simultaneously detect multiple key water quality indicators, such as pH value, heavy metal ion concentration, dissolved oxygen (DO), conductivity (EC) and turbidity.
[0039] In some embodiments of this application, the size of the detection unit 141 matches that of the detection opening, forming a sealed fit to prevent water from flowing into the central area of the smartwatch 10 during the detection process. Furthermore, a waterproof membrane is provided around the detection opening to prevent water in the cavity structure 13 from entering the central area of the smartwatch 10 while the detection unit 141 is inserted into the cavity structure 13. The waterproof membrane can be, for example, a polymer waterproof membrane.
[0040] For example, polymer waterproof membranes can be made of materials such as polytetrafluoroethylene (PTFE) film, polyurethane (PU) film, polyester (PET) film, polyethersulfone (PES) film, or polyimide (PI) film. These polymer materials have excellent waterproof performance, good mechanical strength, and chemical corrosion resistance, effectively blocking water penetration while maintaining a certain degree of flexibility and stability, making them suitable for use in the sealing parts of smartwatches. Alternatively, these polymer waterproof membranes have good waterproof performance and breathability, preventing water from entering the watch while ensuring the exchange of substances between water and sensors without affecting the detection results.
[0041] In the overall design, the detection unit 141 is matched with the detection opening size to form a sealed fit. Combined with the polymer waterproof membrane, this design prevents water leakage into the central area of the smartwatch in a multi-layered and multi-directional manner. This design not only ensures the safety of internal electronic components and avoids short circuits or component damage caused by water intrusion, but also enhances the overall waterproof performance of the smartwatch 10, helping to improve the product's durability and lifespan.
[0042] Furthermore, thanks to the flexible protection of the polymer waterproof membrane, the detection unit 141 can achieve effective sealing when inserted into the cavity structure 13, preventing water leakage or contamination during the detection process, while ensuring the purity and accuracy of the tested water sample. This waterproof membrane also provides a certain buffering effect, reducing friction and mechanical damage between the detection unit and the cavity structure, thus improving structural stability.
[0043] In some embodiments of this application, the detection unit 141 is covered with a buffer. The buffer is suitable for improving the waterproof and vibration-resistant capabilities of the water quality detection chip 14 and providing cushioning protection to reduce external impacts. For example, the buffer can be a silicone sleeve, an elastic polyurethane (TPU) layer, a foam rubber material (such as EPDM foam), a thermoplastic elastomer (TPE) structure, or a flexible coated film (such as a nano-waterproof coating), etc. These materials all have good sealing, elasticity, and impact resistance, and can provide effective protection for the water quality detection chip in different environments, improving the overall durability and reliability of the detection module.
[0044] In some embodiments of this application, the smartwatch 10 includes a vibration module 15, which is adapted to transmit vibration force to the cavity structure 13 after the smartwatch 10 completes water quality testing, causing the water to vibrate and be discharged from the cavity structure 13 through the outlet 132.
[0045] On the one hand, this design cleverly combines the multiple protective functions of the silicone sleeve with the active drainage function of the vibration module, significantly improving the overall performance and user experience of the smartwatch's water quality detection system. Specifically, the silicone sleeve not only enhances the waterproof capability of the detection unit, effectively preventing water from seeping into sensitive electronic components, but also provides a good cushioning effect through its soft and elastic properties. It can absorb external impacts and vibrations, reduce mechanical stress on the water quality detection chip 14, and avoid chip damage or detection abnormalities caused by accidental impacts or vibrations, thereby ensuring the stable operation and long-term durability of the chip in various complex usage environments.
[0046] On the other hand, the design of the vibration module 15 allows the smartwatch 10 to actively apply vibration to the cavity structure 13 after completing the water quality test. This vibration causes the residual water inside the cavity structure 13 to vibrate and be quickly discharged through the outlet 132. This drainage method avoids water retention in the cavity structure 13, reducing the risk of cavity corrosion and microbial (such as bacteria and algae) growth caused by residual water, preventing it from affecting the accuracy of subsequent tests and the hygiene and safety of the equipment. Effective water removal also reduces the risk of short circuits or performance degradation of electronic components caused by a humid environment, further improving the reliability of the equipment.
[0047] In summary, this structural design not only extends the lifespan of the smartwatch's water quality testing function but also improves the stability and accuracy of the test results, ensuring users obtain accurate and reliable data for every test. Furthermore, the vibration module's automatic drainage function eliminates the tedious manual cleaning process, making water quality testing more convenient, intelligent, and user-friendly. Through the synergy of these two technologies, the smartwatch's water quality testing system achieves a perfect combination of efficiency, safety, durability, and ease of use, meeting the needs of modern users for portable health monitoring devices.
[0048] In some embodiments of this application, the vibration module 15 may be a mechanical component such as a motor, a piezoelectric vibrator, an electromagnetic vibrator, or an electrostrictive actuator.
[0049] In addition to shaking water out of the cavity structure 13 through the vibration module 15, the shape of the cavity structure 13 can be designed to make it easier for residual liquid to drain.
[0050] In some embodiments of this application, the cavity structure 13 is a U-shaped structure, with the first and second ends forming the two ends of the U-shape, and the third end located in the middle bend of the U-shape. The diameters of the inlet 131 and outlet 132 can be designed according to testing requirements and waterproofing requirements. For example, the diameters of the inlet 131 and outlet 132 are between 0.5 mm and 1 mm. By setting the diameters of the inlet 131 and outlet 132 between 0.5 mm and 1 mm, the water flow can be effectively controlled while ensuring smooth entry and exit of water into the cavity structure, avoiding damage to the internal structure or short circuit of the detection chip caused by a large influx of water. In addition, this size range also has good dustproof and foreign object ingress prevention effects, which helps to improve the overall sealing and protection level, further extend the service life of the equipment, and ensure the stability and reliability of water quality testing. At the same time, this size design also facilitates good structural matching with microstructure components such as waterproof membranes, improving the integration and precision of the whole machine.
[0051] Designing the cavity structure 13 as a U-shape offers significant drainage advantages. The bends in the U-shape effectively collect residual water within the cavity, using gravity and vibration to concentrate the water flow smoothly towards the outlet, thus reducing water retention. Simultaneously, the U-shape design increases the water path length and flow resistance, facilitating more thorough drainage through vibration or other driving forces. Compared to straight pipe structures, the U-shaped cavity structure more effectively avoids water accumulation in dead corners, improves drainage efficiency, ensures the detection cavity remains dry, prevents circuit board damage, and ultimately improves the accuracy of water quality testing and the lifespan of the equipment.
[0052] In some embodiments of this application, the inlet 131 and outlet 132 are provided with filter membranes, which are configured to filter out impurities in the water. These filter membranes can be, for example, microporous filters, which can prevent larger particles from entering and affecting the accuracy of the detection.
[0053] In some embodiments of this application, the second layer 30 is located between the first layer 20 and the third layer 40, and the water quality detection chip 14 is disposed on the first layer 20 or the second layer 30; the first layer 20 also includes a camera device 17; the second layer 30 includes an NFC module, a motherboard and a battery (not shown in the figure); the third layer 40 includes a SIM card module, a heart rate module and a charging module (not shown in the figure).
[0054] In other words, in terms of installation location, the water quality detection chip 14 can be integrated either at the edge of the display screen 12 of the smartwatch 10 (located in the first layer 20) or below the display screen 12 (located in the second layer 30). This allows for flexible optimization and adjustment of the specific position of the water quality detection chip based on other structural designs within the smartwatch 10. This facilitates better layout of the internal structure of the smartwatch 10.
[0055] Furthermore, by placing other components that may be present in a smartwatch in a different layer than the internal cavity structure, structural functional partitioning can be further achieved, reducing mutual interference and improving the collaborative efficiency between modules and the overall stability of the system. For example, centralizing functional components such as the motherboard, battery, and communication module in the second or third layer not only prevents these critical electronic components from being damaged by moisture or trace liquid leakage during water quality testing, but also leaves more space for the internal cavity structure and water quality detection chip to be placed in the first layer, thereby optimizing the internal layout and improving the watch's integration and maintainability. In addition, layered layout also facilitates subsequent functional expansion or module upgrades, contributing to highly modular and customizable product design.
[0056] In some embodiments of this application, the first layer 20 includes a feedback module 16, which is adapted to notify the user through an audio prompt after the water quality test is completed.
[0057] For example, the feedback module 16 can take the form of a speaker, buzzer, or vibration audio device, which is suitable for informing the user of the test results through preset sound prompts, voice broadcasts, or vibration reminders after the water quality test is completed. For example, the feedback module 16 can play a short prompt tone or voice message, such as "Water quality test completed, water quality safe" or "Water quality abnormal, please pay attention," so that the user can know the water quality status as soon as possible.
[0058] The benefits of this design lie in its enhanced user experience and ease of use. Users don't need to constantly stare at the display screen to receive timely water quality information via sound or vibration, making it particularly suitable for use outdoors, during exercise, or in environments with limited visibility. Furthermore, sound prompts effectively compensate for the limitations of display screen information delivery, making the water quality testing function more intuitive and user-friendly, thus improving the smartwatch's practical value and safety features.
[0059] In some embodiments of this application, the feedback module 16 may further include a vibration device (such as a micro motor) or a light-emitting component (such as an LED indicator) to send a prompt signal to the user through vibration or flashing, respectively. Through these multiple feedback methods, the prompt format can be flexibly selected according to the usage environment and user preferences, enabling users to promptly and accurately know the detection results or system status in different scenarios, thus improving ease of use and human-computer interaction experience.
[0060] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not described in detail or in a particular embodiment can be referred to in the relevant descriptions of other embodiments. Furthermore, the above embodiments can be freely combined as needed.
Claims
1. A smartwatch for water quality testing, characterized in that, The smartwatch includes a first layer, which includes a display screen and a cavity structure. A water inlet is provided at a first end of the cavity structure, a water outlet is provided at a second end of the cavity structure, and a detection opening suitable for water quality detection is provided at a third end of the cavity structure, which is located between the first end and the second end. The smartwatch includes a water quality detection chip, and the detection part of the water quality detection chip is disposed in the cavity structure through the detection opening, which is suitable for detecting the water quality of water flowing through the cavity structure; Water enters the cavity structure through the inlet and exits through the outlet. The display screen is electrically connected to the water quality detection chip to display the water quality detection results.
2. The smartwatch for water quality testing according to claim 1, characterized in that, The size of the detection part and the detection opening are matched to form a sealed fit so that water does not flow into the central area of the smartwatch during the detection process.
3. The smartwatch for water quality testing according to claim 1, characterized in that, A waterproof membrane is provided around the detection opening to prevent water in the cavity structure from entering the central area of the smartwatch when the detection part is inserted into the cavity structure.
4. The smartwatch for water quality testing according to any one of claims 1-3, characterized in that, The detection unit is covered with a buffer, which is adapted to improve the waterproof and vibration-resistant capabilities of the water quality detection chip and provide buffer protection to reduce external impact.
5. The smartwatch for water quality testing according to claim 4, characterized in that, The smartwatch includes a vibration module, which is adapted to transmit vibration force to the cavity structure after the smartwatch completes water quality testing, causing the water to vibrate and be discharged from the cavity structure through the outlet.
6. The smartwatch for water quality testing according to claim 1, characterized in that, The cavity structure is a U-shaped structure, with the first end and the second end being the two ends of the U-shaped structure, and the third end being located in the middle bending area of the U-shaped structure.
7. The smartwatch for water quality testing according to claim 1, characterized in that, The diameters of the inlet and outlet are between 0.5 mm and 1 mm.
8. The smartwatch for water quality testing according to claim 1 or 7, characterized in that, The inlet and outlet are equipped with filter membranes, which are configured to filter out impurities in the water.
9. The smartwatch for water quality testing according to claim 1, characterized in that, The smartwatch also includes a second layer and a third layer, with the second layer located between the first layer and the third layer, and the water quality detection chip disposed on either the first layer or the second layer; The first layer also includes a camera device; The second layer includes an NFC module, a motherboard, and a battery; The third layer includes a SIM card module, a heart rate module, and a charging module.
10. The smartwatch for water quality testing according to claim 1 or 9, characterized in that, The first layer includes a feedback module, which is suitable for prompting and informing the user after the water quality test is completed.