Cup cover and water cup

Abstract

The utility model belongs to the technical field of intelligent water cups, and particularly provides a cup cover and a water cup. The cup cover is used for being matched with a cup body to form a water cup and comprises a cover body and a cover core. The top of the cover core is arranged in the central area of the inner bottom surface of the cover body, a photosensitive sensor and a light source device are arranged on the bottom surface, and a circuit board is arranged in the cover core; the photosensitive sensor and the light source device are electrically connected to a micro-control unit on the circuit board; the light emitting direction of the light source device faces the water containing area of the cup body. When the cup cover and the cup body are in a closed state, the light source device emits a detection light beam, the photosensitive sensor feeds back the illumination intensity of the detection light beam after the detection light beam is emitted to the cup body, and the micro-control unit calculates the amount of water contained in the cup body according to the illumination intensity. Therefore, the technical scheme for measuring the residual water volume of the water cup is simple in calculation, accurate in measurement, easy to implement and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of smart water cup technology, and in particular to a cup lid and a water cup. Background Technology

[0002] Currently, smart water bottles have been widely developed and offer a variety of functions, one important of which is the ability to measure the remaining water volume. Existing methods for measuring the remaining water volume generally include traditional weighing sensor solutions and pure tilt angle detection solutions. Traditional weighing sensor solutions typically calculate water volume by measuring weight changes using a bottom pressure sensor; this requires regular calibration and cannot distinguish between pouring and shaking. Pure tilt angle detection solutions generally use a six-axis sensor to calculate the geometric relationship between the tilt angle and water volume, but this is easily affected by irregular container shapes and liquid sloshing, the calculations are complex, and it lacks accurate judgment of pouring actions.

[0003] Therefore, there is a need for a simple, accurate, easy-to-implement, and low-cost technical solution for measuring the remaining water volume in a water cup. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a cup lid and a water cup.

[0005] This utility model provides a cup lid for use with a cup body to form a water cup, including a lid body and a lid core;

[0006] The top of the cover core is located in the central area of ​​the inner bottom surface of the cover body, and a photosensitive sensor and a light source device are provided on its bottom surface, and a circuit board is provided inside it.

[0007] The photosensitive sensor and the light source device are electrically connected to the microcontroller unit on the circuit board;

[0008] The light source device emits light in the direction of the water-containing area of ​​the cup.

[0009] When the cup lid and the cup body are in the closed state, the light source device emits a detection beam, the photosensitive sensor provides feedback on the light intensity after the detection beam hits the cup body, and the microcontroller calculates the amount of water contained in the cup body based on the light intensity.

[0010] In one possible implementation, a temperature sensor is also provided on the bottom surface of the cover core.

[0011] In one possible implementation, the temperature sensor is based on a thermistor.

[0012] In one possible implementation, a triaxial accelerometer is also provided on the circuit board.

[0013] In one possible implementation, a lithium battery for powering the circuit board is also disposed inside the cover core.

[0014] In one possible implementation, the core of the cover also contains a wireless charging module for charging the lithium battery.

[0015] In one possible implementation, a rubber ring is fitted around the bottom surface edge of the cover core.

[0016] In one possible implementation, the inner sidewall of the lid body is provided with threads for rotatable connection with the cup body.

[0017] In one possible implementation, the microcontroller is a single-chip microcomputer.

[0018] This utility model also provides a water cup, including a cup body and a cup lid as described above.

[0019] The technical solution provided by this utility model has at least the following beneficial effects:

[0020] It is easy to implement and low in cost, measuring the water level in a cup using only a light source and a photosensitive sensor, resulting in low component costs; the calculation is simple and accurate, directly converting the water level into light intensity, resulting in low computational load; and it has good anti-interference capabilities, with low interference from water vapor in the cup on the photosensitive sensor's measurement of light intensity. Attached Figure Description

[0021] Figure 1 A cross-sectional view of the cup lid and cup body in a matching scenario provided by an embodiment of this utility model;

[0022] Figure 2 A perspective view of the cup lid provided in an embodiment of this utility model;

[0023] Figure 3 A schematic diagram of the peripheral structure of the microcontroller unit provided in this embodiment of the utility model;

[0024] In the attached diagram, 10 is the cup lid; 11 is the lid body; 12 is the lid core; 13 is the photosensitive sensor; 14 is the light source device; 15 is the circuit board; 16 is the temperature sensor; 17 is the lithium battery; 18 is the wireless charging module; 19 is the rubber ring; and 20 is the cup body. Detailed Implementation

[0025] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0026] Please refer to Figures 1 to 3The present invention provides a cup lid 10 for use with a cup body 20 to form a water cup, including a lid body 11 and a lid core 12;

[0027] The top of the cover core 12 is located in the central area of ​​the inner bottom surface of the cover body 11, and a photosensitive sensor 13 and a light source device 14 are provided on its bottom surface, and a circuit board 15 is provided inside it.

[0028] The photosensitive sensor 13 and the light source device 14 are electrically connected to the microcontroller unit on the circuit board 15;

[0029] The light source device 14 emits light in the direction of the water-containing area of ​​the cup body 20;

[0030] When the cup lid 10 and the cup body 20 are in the closed state, the light source device 14 emits a detection beam, the photosensitive sensor 13 provides feedback on the light intensity after the detection beam is directed at the cup body 20, and the microcontroller calculates the amount of water contained in the cup body 20 based on the light intensity.

[0031] In this embodiment, the cup lid 10 and the cup body 20 can be connected by a threaded rotation or by a snap-fit ​​connection. The photosensitive sensor 13 can be a conventional model, such as a photoresistor or photodiode. The light source device 14 uses a conventional light source, such as a low-power LED. The microcontroller unit on the circuit board 15 uses a conventional wireless communication MCU, which can transmit data information to other wireless devices. The MCU can control the light source device 14 to turn on or off, and can obtain the light intensity of the current environment through the photosensitive sensor 13. This application provides a technical solution for calculating the water volume in a cup by detecting the light intensity inside the cup using the photosensitive sensor 13 and the light source device 14. The calculation method is simple, the measurement is accurate, it is easy to implement, and the cost is low.

[0032] In one specific embodiment, a display module can be provided on the outer top surface of the cover body 11. The display module is electrically connected to the microcontroller unit on the circuit board 15, and can be used to display the calculated amount of water contained in the cup body 20. The display module can adopt a conventional design.

[0033] In one possible implementation, a temperature sensor 16 is also provided on the bottom surface of the cover core 12.

[0034] In this embodiment, a temperature sensor 16 can be added to improve measurement accuracy. The temperature sensor 16 is electrically connected to the MCU on the circuit board 15. The temperature sensor 16 can be implemented based on a thermistor. By acquiring the current ambient temperature data, the MCU can calibrate the light intensity, thereby reducing the influence of moisture on the photosensor 13.

[0035] In one possible implementation, the temperature sensor 16 is based on a thermistor.

[0036] In this embodiment, the light intensity calibration method specifically involves: obtaining the current light intensity E0 inside the cup, obtaining the real-time temperature T obtained from the thermistor, and calculating the calibrated light intensity E using the following formula. s :

[0037] E s =E0+aT+b

[0038] Where a is the temperature coefficient and b is the offset, both of which were obtained through testing.

[0039] In one possible implementation, a triaxial accelerometer is also provided on the circuit board 15.

[0040] In this embodiment, to improve measurement accuracy, a triaxial accelerometer can be added, which is electrically connected to the MCU on the circuit board 15. With the addition of the triaxial accelerometer, the stability of the cup 20 when closed can be determined based on the acceleration values ​​in the three axes. When the cup 20 is in a stable closed state, the light source device 14 is turned on to obtain the light intensity. The light intensity varies depending on the amount of water in the cup; the greater the water volume and the higher the liquid level, the higher the light intensity. The conversion is performed according to the water volume and light intensity table (as shown in Table 1).

[0041] Table 1:

[0042] Water volume V (mL) Illumination intensity E (AD sampling value) 0 1470 10 1473 50 1503 100 1560 150 1620 200 1686 250 1738 300 1796 350 1832

[0043] It should be noted that the data in Table 1 are from experimental data. The values ​​in the water volume and light intensity table will vary depending on the type of photosensitive sensor 13, the light source used, and the internal structure and material of the cup 20. The rated capacity of the cup 20 used in the experiment in Table 1 is 350 mL; therefore, only the light intensity values ​​corresponding to different water volumes within the range of 0–350 mL were tested. The water volume and light intensity table can be adjusted according to the actual capacity of the cup used. For ease of calculation, the light intensity values ​​in the table can be directly obtained from the original AD analog-to-digital converter (AD converter) or converted to light intensity values ​​in other units.

[0044] The specific water volume measurement process of this application is as follows: the light intensity inside the cup is acquired periodically, and the cup is judged to be in a closed state based on the acquired light intensity. If the cup is in a closed state, the light source inside the cup is turned on, and the light intensity inside the cup is acquired again. If the light intensity is in a stable state, it means that the cup body 20 is in a stable state. The water volume inside the cup is calculated based on the light intensity inside the cup at this time.

[0045] Method for determining if the device is in a closed state: Small fluctuations in triaxial acceleration values ​​(e.g., peak-to-peak value Δ ≤ 0.05 m / s² over a period of time). 2 Turn off the light source, obtain the current light intensity value of 0, no light is detected inside the cup, and determine that the cup is in the closed state.

[0046] Method for determining a stable state: small fluctuations in triaxial acceleration values ​​(e.g., peak-to-peak value Δ ≤ 0.05 m / s² over a period of time). 2 Turn on the light source and obtain the current light intensity value. Small fluctuations in light intensity indicate that the light is in a stable state.

[0047] In one possible implementation, a lithium battery 17 for powering the circuit board 15 is also disposed inside the cover core 12.

[0048] In this embodiment, the lithium battery 17 is a conventional model, and a charging module can also be installed inside the cover core 12. The charging module can be wireless or wired.

[0049] In one possible implementation, the cover core 12 is further provided with a wireless charging module 18 for charging the lithium battery 17.

[0050] In this embodiment, the wireless charging module 18 can be implemented using a conventional wireless charging design scheme, or an existing module can be directly used.

[0051] In one possible implementation, a rubber ring 19 is fitted around the bottom surface edge of the cover core 12.

[0052] In this embodiment, a rubber ring 19 is provided on the cover core 12, which can effectively improve the sealing performance.

[0053] In one possible implementation, the inner sidewall of the cover body 11 is provided with threads for rotatable connection with the cup body 20.

[0054] In one possible implementation, the microcontroller is a single-chip microcomputer.

[0055] In this embodiment, a conventional microcontroller can be used.

[0056] This utility model also provides a water cup, including a cup body 20 and a cup lid 10 as described above.

[0057] In this embodiment, the connection between the cup lid 10 and the cup body 20 adopts a conventional design, such as using an internal and external threaded rotary connection.

[0058] The above embodiments should not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A cup lid for fitting with a cup body to form a water cup, characterized in that, Includes the lid body and the lid core; The top of the cover core is located in the central area of ​​the inner bottom surface of the cover body, and a photosensitive sensor and a light source device are provided on its bottom surface, and a circuit board is provided inside it. The photosensitive sensor and the light source device are electrically connected to the microcontroller unit on the circuit board; The light source device emits light in the direction of the water-containing area of ​​the cup. When the cup lid and the cup body are in the closed state, the light source device emits a detection beam, the photosensitive sensor provides feedback on the light intensity after the detection beam hits the cup body, and the microcontroller calculates the amount of water contained in the cup body based on the light intensity.

2. The cup lid according to claim 1, characterized in that, A temperature sensor is also provided on the bottom surface of the cover core.

3. The cup lid according to claim 2, characterized in that, The temperature sensor is based on a thermistor.

4. The cup lid according to claim 1, characterized in that, The circuit board is also equipped with a triaxial accelerometer.

5. The cup lid according to claim 1, characterized in that, The cover core also contains a lithium battery that powers the circuit board.

6. The cup lid according to claim 5, characterized in that, The core of the cover also contains a wireless charging module for charging the lithium battery.

7. The cup lid according to claim 1, characterized in that, A rubber ring is fitted around the bottom edge of the cover core.

8. The cup lid according to claim 1, characterized in that, The inner sidewall of the lid body is provided with threads for rotatable connection with the cup body.

9. The cup lid according to claim 1, characterized in that, The microcontroller unit is a single-chip microcomputer.

10. A water cup, characterized in that, Includes a cup body and a cup lid as described in any one of claims 1 to 9.

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