Water tank water level detection circuit and water tank with same

Abstract

The utility model discloses a water tank water level detection circuit and a water tank with the same, the detection circuit comprises a micro-control unit MCU and a detection chip U1, the detection chip U1 is connected with the micro-control unit MCU, the micro-control unit MCU is also connected with a prompt circuit, a pin 16 of the detection chip U1 is connected with a reference detection end Reserve, and a pin 16 of the detection chip U1 is connected with a pin 16 of the prompt circuit. A pin 12 of the detection chip U1 is connected with a first detection end KEY1, a pin 11 of the detection chip U1 is connected with a second detection end KEY2, the reference detection end is connected with a first induction sensitive element, the first detection end KEY1 is connected with a second induction sensitive element, and the second detection end KEY2 is connected with a third induction sensitive element. According to the water level detection circuit for the water tank and the water tank with the water level detection circuit, the detection chip U1 is combined with the first induction sensitive element, so that the reference water level is detected, two different water levels are detected in cooperation with the second induction sensitive element and the third induction sensitive element, the water level detection accuracy is further improved, and accurate temperature control is conveniently implemented.

Description

Technical Field

[0001] The utility model particularly relates to a water tank water level detection circuit and a water tank with the circuit. Background Art

[0002] With the continuous progress and innovation of science and technology, the technology of water tank water level detection has been widely studied and applied. However, the existing technology still has many shortcomings in the traditional water level gear detection, such as relying on the lifting of the float and the identification of the external water tank range scale. For example, the name of the domestic patent document is: A water dispenser ultraviolet disinfection device, the application number of the patent document is: CN202222466254.5, the specific structure is as follows: including a water dispenser, the front of the water dispenser is provided with a visual window, the front of the visual window is provided with a control panel, the top surface of the water dispenser is provided with a sealing cover, the side end of the water dispenser is provided with a water inlet, the side of the water dispenser is provided with a float switch, the inner top surface of the float switch is provided with a positioning switch, the top surface of the water dispenser is provided with a horizontal plate, the middle of the horizontal plate is provided with a mounting seat, the bottom surface of the mounting seat is connected to the ultraviolet lamp, the top surface of the mounting seat is provided with an automatic reset switch, and the bottom surface of the sealing cover is provided with a block. However, there are some shortcomings during use: the float switch in the water dispenser can only implement the function of water filling or closing, and cannot accurately detect the water level; in order to solve this problem, this solution sets up a visual window to observe the water level, which mainly relies on manual implementation, which is inconvenient for daily use, especially in precise temperature control. This recording technical solution cannot meet the needs. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a water tank water level detection circuit and a water tank having the circuit that can further improve the accuracy of water level detection and implement precise temperature control.

[0004] The utility model provides a water tank water level detection circuit, which includes a microcontroller unit MCU and a detection chip U1. The detection chip U1 is connected to the microcontroller unit MCU. The microcontroller unit MCU is also connected to a prompt circuit. Pin 16 of the detection chip U1 is connected to a reference detection terminal Reserve, pin 12 of the detection chip U1 is connected to a first detection terminal KEY1, pin 11 of the detection chip U1 is connected to a second detection terminal KEY2, the reference detection terminal is connected to a first sensing sensitive element, the first detection terminal KEY1 is connected to a second sensing sensitive element, and the second detection terminal KEY2 is connected to a third sensing sensitive element.

[0005] Specifically, the prompt circuit includes a buzzer FM, a transistor Q1 and a fifth resistor R5. The collector of the transistor Q1 is connected to pin 2 of the buzzer FM, pin 1 of the buzzer FM is connected to the ground terminal GND, the emitter of the transistor Q1 is connected to the power supply terminal VCC, the base of the transistor Q1 is connected to the fifth resistor R5, and the fifth resistor R5 is connected to pin 3 of the microcontroller unit MCU.

[0006] Specifically, the pin 16 of the detection chip U1 is connected to the reference detection terminal Reserve via a first resistor R1.

[0007] Specifically, the common end between pin 16 of the detection chip U1 and the first resistor R1 is connected to a third capacitor C3, which is also connected to the ground terminal GND. Pin 12 of the detection chip U1 is connected to the first detection terminal KEY1 via a second resistor R2.

[0008] Specifically, a common terminal between the pin 12 of the detection chip U1 and the second resistor R2 is connected to a fourth capacitor C4 , and the fourth capacitor C4 is connected to a ground terminal GND.

[0009] Specifically, the pin 11 of the detection chip U1 is connected to the second detection terminal KEY2 via a third resistor R3.

[0010] Specifically, a common terminal between the pin 11 of the detection chip U1 and the third resistor R3 is connected to a fifth capacitor C5 , and the fifth capacitor C5 is connected to a ground terminal GND.

[0011] Specifically, the pin 10 of the detection chip U1 is connected to a fourth resistor R4 , the fourth resistor R4 is connected to a third detection terminal KEY3 , and the third detection terminal KEY3 is connected to a fourth sensing element.

[0012] Specifically, pin 1 of the detection chip U1 is connected to a first inductor L1 , and pin 3 of the detection chip U1 is connected to a second inductor L2 .

[0013] The utility model discloses a water tank, comprising a water storage cavity. An insulating layer is provided around the water storage cavity. A water tank water level detection circuit according to any of the above schemes is provided outside the insulating layer. A first sensing sensitive element, a second sensing sensitive element, a third sensing sensitive element and a fourth sensing sensitive element of the water tank water level detection circuit are respectively fixed on the outer surface of the insulating layer.

[0014] The beneficial effects of the present invention are as follows: the present circuit detects the reference water level through the combination of the detection chip U1 and the first sensitive sensing element, and cooperates with the second sensitive sensing element and the third sensitive sensing element to detect two different water levels, thereby further improving the accuracy of water level detection and implementing precise temperature control, thus solving the problem of insufficient accuracy in water level detection using a float in the past; in addition, the present circuit also prompts different water levels through a prompt circuit, making it easier for users to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings.

[0016] Figure 1 It is a structural schematic diagram of the utility model in use state.

[0017] Figure 2 It is a circuit diagram of the present utility model.

[0018] Figure 3 This is a prompt circuit diagram of the utility model.

[0019] The reference numerals are as follows: prompt circuit 100 , insulating layer 200 , water storage chamber 300 , second sensing sensitive element 400 , first sensing sensitive element 500 . DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] Reference below Figures 1 to 3 The water level detection circuit of the water tank of the present invention is described, including a microcontroller unit MCU and a detection chip U1. The detection chip U1 is connected to the microcontroller unit MCU. The microcontroller unit MCU is also connected to a prompt circuit 100. Pin 16 of the detection chip U1 is connected to a reference detection terminal Reserve, pin 12 of the detection chip U1 is connected to a first detection terminal KEY1, pin 11 of the detection chip U1 is connected to a second detection terminal KEY2, the reference detection terminal is connected to a first sensing sensitive element 500, the first detection terminal KEY1 is connected to a second sensing sensitive element 400, and the second detection terminal KEY2 is connected to a third sensing sensitive element.

[0022] This circuit detects the reference water level through the combination of the detection chip U1 and the first sensitive element 500, and cooperates with the second sensitive element 400 and the third sensitive element to detect two different water levels, further improving the accuracy of water level detection and implementing precise temperature control, thereby resolving the lack of accuracy in water level detection using a float in the past. In addition, this circuit also provides prompts for different water levels through the prompt circuit 100, making it easier for users to operate.

[0023] The first sensing sensitive element 500, the second sensing sensitive element 400 and the third sensing sensitive element respectively detect the water level in the water tank. The first sensing sensitive element 500, the second sensing sensitive element 400 and the third sensing sensitive element respectively output water level signals, which are input to the detection chip U1. The detection chip U1 converts the signal into a signal that can be recognized by the microcontroller unit MCU. The microcontroller unit MCU controls the prompt circuit 100 to sound an alarm to serve as a prompt.

[0024] The prompt circuit 100 is specifically configured as follows: The prompt circuit 100 includes a buzzer FM, a transistor Q1, and a fifth resistor R5. The collector of the transistor Q1 is connected to pin 2 of the buzzer FM, pin 1 of the buzzer FM is connected to ground GND, the emitter of the transistor Q1 is connected to the power supply VCC, and the base of the transistor Q1 is connected to the fifth resistor R5, which is then connected to pin 3 of the microcontroller unit MCU. Pin 3 of the microcontroller unit MCU outputs a voltage, which is input to the base of the transistor Q1, turning on the transistor Q1. The voltage on the power supply VCC is then input to the buzzer FM, causing the buzzer FM to generate a sound. The fifth resistor R5 protects the base of the transistor Q1.

[0025] In this circuit, pin 16 of the detection chip U1 is connected to the reference detection terminal Reserve via a first resistor R1. First resistor R1 protects pin 16 of the detection chip U1. A third capacitor C3 is connected to the common terminal between pin 16 of the detection chip U1 and the first resistor R1. Third capacitor C3 is also connected to ground GND. Third capacitor C3 reduces noise and interference in the circuit.

[0026] In this circuit, pin 12 of the detection chip U1 is connected to the first detection terminal KEY1 via a second resistor R2. Second resistor R2 protects pin 12 of the detection chip U1. A fourth capacitor C4 is connected to the common terminal between pin 12 of the detection chip U1 and the second resistor R2. This capacitor C4 is connected to the ground terminal GND. This capacitor C4 reduces noise and interference in the circuit.

[0027] In this circuit, pin 11 of the detection chip U1 is connected to the second detection terminal KEY2 via a third resistor R3. This third resistor R3 protects pin 11 of the detection chip U1. A fifth capacitor C5 is connected to the common terminal between pin 11 of the detection chip U1 and the third resistor R3. This capacitor C5 is connected to the ground terminal GND. Similarly, the fifth capacitor C5 reduces noise and interference in the circuit.

[0028] In this circuit, pin 10 of the detection chip U1 is connected to a fourth resistor R4, which is connected to a third detection terminal KEY3, which is connected to a fourth sensing element. Resistor R4 protects pin 10 of the detection chip U1; the fourth sensing element enhances water level detection and improves detection accuracy.

[0029] In this circuit, pin 1 of the detection chip U1 is connected to a first inductor L1, and pin 3 of the detection chip U1 is connected to a second inductor L2. The combination of the first and second inductors L1 and L2 stores electrical energy in their magnetic field, which is particularly important for switching power supplies (such as switching power supplies). This allows energy to be released when needed to stabilize the current. Furthermore, their resistance to current fluctuations enables current smoothing. By increasing the time constant of current variation, sudden current fluctuations are reduced, providing a more stable power output. The circuit also includes an electrolytic capacitor EC1, a first capacitor C1, and a second capacitor C2 to suppress high-frequency noise and interference, ensuring a stable and clean output voltage.

[0030] The utility model also discloses a water tank, including a water storage chamber 300, an insulating layer 200 is provided around the water storage chamber 300, the above-mentioned water tank water level detection circuit is provided outside the insulating layer 200, and the first sensing sensitive element 500, the second sensing sensitive element 400, the third sensing sensitive element and the fourth sensing sensitive element of the water tank water level detection circuit are respectively fixed on the outer surface of the insulating layer 200. The specific steps of the water tank implementation are as follows: Step 1: The first sensing sensitive element 500, the second sensing sensitive element 400, the third sensing sensitive element and the fourth sensing sensitive element are installed on the insulating layer 200. The insulating layer 200 has a soft characteristic. When water squeezes the insulating layer 200, any one or more of the first sensing sensitive element 500, the second sensing sensitive element 400, the third sensing sensitive element and the fourth sensing sensitive element output an electrical signal, which is fed back to the water level detection circuit of the water tank, specifically to the detection chip U1. The detection chip U1 transfers the final water level signal to the microcontroller unit MCU for calculation and comparison to confirm the water level; the first sensing sensitive element 500, the second sensing sensitive element 400, the third sensing sensitive element and the fourth sensing sensitive element are respectively barriers for the sensing spring to contact the insulating layer 200.

[0031] The installation position of the first sensing sensitive element 500 is not limited to that shown in the drawings; the first sensing sensitive element 500 can also be installed at the upper end of the water storage chamber 300, or the first sensing sensitive element 500 can also be installed at the middle end of the water storage chamber 300.

[0032] The microcontroller unit MCU is set accordingly according to the positions of the first sensing sensitive element 500, the second sensing sensitive element 400, the third sensing sensitive element and the fourth sensing sensitive element. With the water level of the first sensing sensitive element 500 as a reference, the second sensing sensitive element 400, the third sensing sensitive element and the fourth sensing sensitive element output water level signals; the detection chip U1 detects changes in the water level capacity, and the microcontroller unit MCU calculates the current water level using a preset algorithm.

[0033] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water tank water level detection circuit, comprising a microcontroller unit (MCU), characterized in that: The device further comprises a detection chip U1, the detection chip U1 being connected to a microcontroller unit MCU, the microcontroller unit MCU being further connected to a prompt circuit (100), the 16th pin of the detection chip U1 being connected to a reference detection terminal Reserve, the 12th pin of the detection chip U1 being connected to a first detection terminal KEY1, the 11th pin of the detection chip U1 being connected to a second detection terminal KEY2, the reference detection terminal being connected to a first sensing sensitive element (500), the first detection terminal KEY1 being connected to a second sensing sensitive element (400), and the second detection terminal KEY2 being connected to a third sensing sensitive element.

2. The water tank water level detection circuit according to claim 1, characterized in that: The prompt circuit (100) comprises a buzzer FM, a transistor Q1 and a fifth resistor R5, wherein the collector of the transistor Q1 is connected to pin 2 of the buzzer FM, pin 1 of the buzzer FM is connected to a ground terminal GND, the emitter of the transistor Q1 is connected to a power supply terminal VCC, the base of the transistor Q1 is connected to the fifth resistor R5, and the fifth resistor R5 is connected to pin 3 of a microcontroller unit MCU.

3. The water tank water level detection circuit according to claim 1, characterized in that: Pin 16 of the detection chip U1 is connected to the reference detection terminal Reserve via a first resistor R1.

4. The water tank water level detection circuit according to claim 3, characterized in that: The common end between pin 16 of the detection chip U1 and the first resistor R1 is connected to a third capacitor C3 , which is also connected to the ground GND. Pin 12 of the detection chip U1 is connected to the first detection terminal KEY1 via a second resistor R2 .

5. The water tank water level detection circuit according to claim 4, characterized in that: A common terminal between the pin 12 of the detection chip U1 and the second resistor R2 is connected to a fourth capacitor C4 , and the fourth capacitor C4 is connected to a ground terminal GND.

6. The water tank water level detection circuit according to claim 1, characterized in that: Pin 11 of the detection chip U1 is connected to the second detection terminal KEY2 via a third resistor R3.

7. The water tank water level detection circuit according to claim 6, characterized in that: A common terminal between the pin 11 of the detection chip U1 and the third resistor R3 is connected to a fifth capacitor C5 , and the fifth capacitor C5 is connected to a ground terminal GND.

8. The water tank water level detection circuit according to claim 1, characterized in that: Pin 10 of the detection chip U1 is connected to a fourth resistor R4 , the fourth resistor R4 is connected to a third detection terminal KEY3 , and the third detection terminal KEY3 is connected to a fourth sensing element.

9. The water tank water level detection circuit according to claim 1, characterized in that: Pin 1 of the detection chip U1 is connected to a first inductor L1 , and pin 3 of the detection chip U1 is connected to a second inductor L2 .

10. A water tank comprising a water storage chamber (300), wherein an insulating layer (200) is provided around the water storage chamber (300), characterized in that: A water tank water level detection circuit according to any one of claims 1 to 9 is provided outside the insulating layer (200), and a first sensing sensitive element (500), a second sensing sensitive element (400), a third sensing sensitive element and a fourth sensing sensitive element of the water tank water level detection circuit are respectively fixed on the outer surface of the insulating layer (200).

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