Water quality detection display circuit and device, stirring spoon and intelligent home system

Abstract

The utility model discloses a water quality detection display circuit, a device, a stirring spoon and an intelligent household system, the water quality detection display circuit is applied to the stirring spoon, and the water quality detection display circuit comprises a water quality and water temperature detection circuit used for detecting water quality and water temperature of liquid to be detected and outputting corresponding water quality signals and water temperature signals; the input end of the control display circuit is connected with the output end of the water quality and water temperature detection circuit, and the control display circuit is used for displaying the water quality and the temperature of the liquid to be detected according to the water quality signal and the water temperature signal. The stirring spoon has the water quality detection function, and the health problem caused by poor water quality is avoided.

Description

Technical Field

[0001] The utility model relates to the field of water quality detection, in particular to a water quality detection display circuit, a device, a stirring spoon and an intelligent home system. Background Art

[0002] A food stirring spoon is a common tool used in daily life, used to mix drinks, such as milk or coffee. However, currently, common food stirring spoons lack water quality testing capabilities, making it difficult to accurately monitor the quality of drinking water at home. Furthermore, water temperature can affect the brewing of drinks, and outdoor travel or exploration requiring an external water source poses a risk of water quality exceeding standards. Summary of the Invention

[0003] The main purpose of the utility model is to provide a water quality detection display circuit, device, stirring spoon and smart home system, aiming to enable the stirring spoon to have the function of water quality detection to avoid health problems caused by poor water quality.

[0004] To achieve the above-mentioned purpose, the water quality detection and display circuit proposed by the present invention includes:

[0005] The water quality and temperature detection circuit is used to detect the water quality and temperature of the liquid to be tested, and output corresponding water quality signals and water temperature signals;

[0006] A control display circuit, wherein the input end of the control display circuit is connected to the output end of the water quality and water temperature detection circuit, and the control display circuit is used to display the water quality and temperature of the liquid to be measured according to the water quality signal and the water temperature signal.

[0007] Optionally, the control and display circuit includes a first input terminal and a second input terminal, and the water quality and temperature detection circuit includes:

[0008] At least one detection probe, wherein the output end of each detection probe is connected to the first input end of the control and display circuit, and each detection probe is used to detect the water quality of the liquid to be tested and output at least one water quality signal to the control and display circuit accordingly;

[0009] A temperature sensor, wherein the output end of the temperature sensor is connected to the second input end of the control and display circuit, and the temperature sensor is used to detect the temperature of the liquid to be measured and output a corresponding water temperature signal to the control and display circuit.

[0010] Optionally, the control display circuit includes:

[0011] Display screen;

[0012] A controller, wherein the input end of the controller is connected to the output end of the water quality and water temperature detection circuit, the output end of the controller is connected to the input end of the display screen, and the controller is used to control the operation of the display screen according to the water quality signal and the water temperature signal;

[0013] A memory is electrically connected to the controller, and is used to store the water quality signal and the water temperature signal output by the controller.

[0014] Optionally, the water quality detection and display circuit further includes:

[0015] A power supply circuit, wherein the output end of the power supply circuit is respectively connected to the power supply end of the water quality and water temperature detection circuit and the power supply end of the control and display circuit, and the power supply circuit is used to provide working voltage to the water quality and water temperature detection circuit and the control and display circuit.

[0016] Optionally, the water quality detection and display circuit further includes:

[0017] A switch circuit, wherein the output end of the switch circuit is connected to the input end of the control display circuit, and when the switch circuit is triggered, the switch circuit outputs an on signal to the control display circuit to start the control display circuit; or when the switch circuit is triggered, the switch circuit outputs a off signal to the control display circuit to stop the control display circuit.

[0018] Optionally, the water quality detection and display circuit further includes:

[0019] A wireless communication circuit, wherein the input end of the wireless communication circuit is electrically connected to the output end of the control display circuit, the output end of the wireless communication circuit is used for communication connection with the control terminal, and the wireless communication circuit is used to send the water quality signal and water temperature signal output by the control display circuit to the control terminal.

[0020] The present invention further provides a water quality detection and display device, comprising a printed circuit board and the water quality detection and display circuit as described above, wherein the water quality detection and display circuit is arranged on the printed circuit board.

[0021] The utility model also provides a stirring spoon, comprising the water quality detection and display device as described above.

[0022] Optionally, the stirring spoon further comprises:

[0023] A stirring spoon body, wherein the water quality detection and display device is provided on the stirring spoon body;

[0024] The retractable stirring head is arranged on the stirring spoon body.

[0025] The present invention further provides a smart home system, comprising a control terminal and the stirring spoon as described above, wherein the control terminal is communicatively connected to a wireless communication circuit in the stirring spoon.

[0026] The technical solution of the present utility model comprises a water quality detection and display circuit formed by a water quality and water temperature detection circuit and a control and display circuit, and is applied to a stirring spoon; wherein the water quality and water temperature detection circuit can detect the water quality and water temperature of the liquid to be tested, and output corresponding water quality signals and water temperature signals to the control and display circuit; and the control and display circuit can display the water quality and temperature of the liquid to be tested according to the water quality signal and the water temperature signal, so that the user can intuitively see the water quality and water temperature of the liquid to be tested. In this way, the present solution can enable the stirring spoon to have the functions of water quality detection and water temperature detection, thereby avoiding health problems caused by poor water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 This is a functional module diagram of an embodiment of a water quality detection and display circuit of the present utility model;

[0029] Figure 2 This is a functional module diagram of another embodiment of the water quality detection and display circuit of the present utility model;

[0030] Figure 3 This is a functional module diagram of another embodiment of the water quality detection and display circuit of the present utility model;

[0031] Figure 4 This is a functional module diagram of another embodiment of the water quality detection and display circuit of the present utility model;

[0032] Figure 5 This is a structural diagram of an embodiment of a stirring spoon of the present invention.

[0033] Description of Figure Numbers:

[0034] 10. Water quality and temperature detection circuit; 11. Detection probe; 12. Temperature sensor; 20. Control and display circuit; 21. Controller; 22. Display screen; 23. Memory; 30. Power supply circuit; 40. Switch circuit; 50. Wireless communication circuit; 100. Retractable stirring head.

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] A food stirring spoon is a common tool used in daily life, used to mix drinks, such as milk or coffee. However, currently, common food stirring spoons lack water quality testing capabilities, making it difficult to accurately monitor the quality of drinking water at home. Furthermore, water temperature can affect the brewing of drinks, and outdoor travel or exploration requiring an external water source poses a risk of water quality exceeding standards.

[0040] To this end, the utility model proposes a water quality detection and display circuit, which is applied to a stirring spoon.

[0041] Reference Figure 1 In one embodiment, the water quality detection and display circuit includes:

[0042] The water quality and temperature detection circuit 10 is used to detect the water quality and temperature of the liquid to be tested and output corresponding water quality signals and water temperature signals;

[0043] The control display circuit 20 has an input end connected to the output end of the water quality and water temperature detection circuit 10 , and is used to display the water quality and temperature of the liquid to be tested according to the water quality signal and the water temperature signal.

[0044] In this embodiment, the water quality and temperature detection circuit 10 can be composed of a water quality detection part and a water temperature detection part. The water quality detection part is used to detect the water quality of the liquid to be tested, and the water temperature detection part is used to detect the water temperature of the liquid to be tested. The liquid to be tested by the water quality and temperature detection circuit 10 can be drinking water at home or a water source collected in the wild. The standard for water quality detection can be to detect the TDS value of the liquid to be tested. TDS is total dissolved solids (abbreviated as TDS), also known as the total amount of dissolved solids, and the unit of measurement is milligrams per liter (mg / L). It indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. Therefore, the higher the TDS value, the more dissolved matter the water contains, and the worse the water quality; conversely, the lower the TDS value, the less dissolved matter the water contains, and the better the water quality. The water quality of the liquid to be tested can be specifically detected by a probe, and a corresponding electrical signal, i.e., a water quality signal, is output to the control and display circuit 20. The water temperature detection of the liquid to be tested can be achieved through a temperature sensor 12 or other device capable of temperature detection; for example, the temperature sensor 12 can detect the temperature of the liquid to be tested and output a corresponding electrical signal, that is, a water temperature signal to the control display circuit 20.

[0045] The control and display circuit 20 can be composed of a control processing part and a display part. The control processing part can be specifically composed of a chip with control processing functions such as an MCU. Taking the MCU as an example, the MUC can include a signal processing module and a signal conversion module. In this way, the MCU can convert and process the electrical signals representing the water quality and water temperature output by the water quality and water temperature detection circuit 10 to obtain corresponding digital signals. The display part can be composed of one or more display screens 22. After the MCU obtains the digital signals corresponding to the water quality and water temperature, it can control the display screen 22 to display the corresponding water quality information and water temperature information in digital or graphical form. The water quality detection and display circuit in this solution can be applied to a stirring spoon. Therefore, when the user puts the stirring spoon into the cup containing the liquid to be tested, the user can know the water quality and water temperature of the liquid to be tested through the display screen 22, and then choose to continue drinking the liquid to be tested or pour it out according to the water quality and water temperature of the liquid to be tested. Therefore, this solution incorporates a water quality detection and display circuit into a stirring spoon. Users can measure water quality and temperature anytime, anywhere, whether drinking water, making tea, preparing milk powder, or other instant solutions at home, or even when connecting to tap water outdoors. Furthermore, users can intuitively determine the water quality and temperature using only the stirring spoon, eliminating the need for other methods to determine the liquid's quality and temperature. This prevents health issues associated with poor water quality and prevents suboptimal coffee or milk brewing due to excessively high or low water temperatures. Therefore, incorporating a water quality detection and display circuit into a stirring spoon can enhance the user experience.

[0046] The technical solution of the present invention comprises a water quality detection and display circuit formed by a water quality and water temperature detection circuit 10 and a control and display circuit 20, and is applied to a stirring spoon. The water quality and water temperature detection circuit 10 can detect the water quality and water temperature of the liquid to be tested, and output corresponding water quality signals and water temperature signals to the control and display circuit 20. The control and display circuit 20 can display the water quality and temperature of the liquid to be tested based on the water quality signal and the water temperature signal, so that the user can intuitively see the water quality and water temperature of the liquid to be tested. In this way, the present solution can enable the stirring spoon to have the functions of water quality detection and water temperature detection, thereby avoiding health problems caused by poor water quality.

[0047] Reference Figure 2 In one embodiment, the control and display circuit includes a first input terminal and a second input terminal, and the water quality and temperature detection circuit 10 includes:

[0048] At least one detection probe 11, wherein the output end of each detection probe 11 is connected to the first input end of the control and display circuit 20, and each detection probe 11 is used to detect the water quality of the liquid to be tested and output at least one water quality signal to the control and display circuit 20 accordingly;

[0049] The temperature sensor 12 has an output end connected to the second input end of the control and display circuit 20 . The temperature sensor 12 is used to detect the temperature of the liquid to be measured and output a corresponding water temperature signal to the control and display circuit 20 .

[0050] In this embodiment, the water quality and temperature detection circuit 10 can be composed of at least one detection probe 11 and a temperature sensor 12; wherein the detection probe 11 can be one or more, so that when one detection probe 11 fails, the water quality of the liquid to be tested can also be detected normally; or the overall water quality of the liquid to be tested can be obtained through multiple detection probes 11, and the signals obtained by the multiple detection probes 11 can be converted into digital signals and then averaged to avoid errors in water quality detection; the specific number of detection probes 11 and the signal processing for the output of the detection probes 11 can be set according to user needs, and this embodiment does not impose any restrictions; the detection probe 11 can be a copper-nickel-plated probe or other probe that can detect water quality. The temperature sensor 12 can detect the temperature of the liquid to be tested through the high-precision thermistor therein, and output the corresponding electrical signal, i.e., the water temperature signal, to the control display circuit 20.

[0051] Reference Figure 3 In one embodiment, the control display circuit 20 includes:

[0052] Display screen 22;

[0053] A controller 21, wherein the input end of the controller 21 is connected to the output end of the water quality and water temperature detection circuit 10, and the output end of the controller 21 is connected to the input end of the display screen 22, and the controller 21 is used to control the operation of the display screen 22 according to the water quality signal and the water temperature signal;

[0054] The memory 23 is electrically connected to the controller 21 , and is used to store the water quality signal and the water temperature signal output by the controller 21 .

[0055] In this embodiment, the control and display circuit 20 can be composed of a display screen 22, a controller 21, and a memory 23. The display screen 22 can be a display screen of the type of LCD, LED, or OLED, and can be selected according to user needs. The controller 21 can be a digital signal processor (DSP), a programmable logic device (PLD), a field programmable gate array (FPGA), a microprocessor, an MCU, or other electronic components. The controller 21 can control the display screen 22 to display the corresponding water quality information and water temperature information based on the water quality signal and the water temperature signal, and can display them on the display screen 22 in the form of numbers or graphics. In actual applications, the controller 21 can also use an MCU to support serial port firmware burning. When the user is dissatisfied with the current control effect or needs to change the control logic separately, the user's needs can be met by after-sales service targeted burning of new firmware. The memory 23 can be a memory 23 of the type of E2PROM or DDR3, and the memory 23 can store the water quality signal and water temperature signal output by the controller 21.

[0056] Reference Figure 4 In one embodiment, the water quality detection and display circuit further includes:

[0057] The power supply circuit 30 has an output end connected to the power supply end of the water quality and temperature detection circuit 10 and the power supply end of the control and display circuit 20 respectively, and the power supply circuit 30 is used to provide working voltage to the water quality and temperature detection circuit 10 and the control and display circuit 20.

[0058] In this embodiment, the power supply circuit 30 can use a button battery or other battery as a power source to power the water quality and temperature detection circuit 10 and the control and display circuit 20. Taking the button battery as an example, the button battery can be placed in the battery compartment and pressed tightly to avoid safety issues such as leakage. The specific number and type of batteries can be selected according to user needs and actual conditions. If the battery output voltage does not match the operating voltage of the water quality and temperature detection circuit 10 or the control and display circuit 20, the power supply circuit 30 can also be provided with a DC-DC circuit to convert the battery output voltage into a suitable operating voltage for the water quality and temperature detection circuit 10 or the control and display circuit 20, so as to prevent the water quality and temperature detection circuit 10 or the control and display circuit 20 from receiving a higher operating voltage and causing damage to the device, or receiving a lower operating voltage and causing the device to malfunction. The power supply circuit 30 can also provide operating voltage to other peripheral circuits in the water quality detection and display circuit.

[0059] Reference Figure 4 In one embodiment, the water quality detection and display circuit further includes:

[0060] The switch circuit 40 has an output end connected to an input end of the control and display circuit 20. When the switch circuit 40 is triggered, it outputs an on signal to the control and display circuit 20 so that the control and display circuit 20 starts working; or when the switch circuit is triggered, it outputs an off signal to the control and display circuit 20 so that the control and display circuit 20 stops working.

[0061] In this embodiment, the switch circuit 40 can be composed of buttons and electronic components such as capacitors, resistors, transistors and MOS tubes. The specific structure can be set according to user needs and is not limited in this embodiment. When the button in the switch circuit 40 is pressed by the user, the conduction state in the circuit will change, so that the output electrical signal will also change, so that different electrical signals can be output to the control display circuit 20. For example, when the button is pressed by the user, the switch circuit 40 outputs a high-level electrical signal, that is, a turn-on signal to the control display circuit 20, so that the control display circuit 20 starts working; the user presses the button again, so that the button rebounds, and the switch circuit 40 outputs a low-level electrical signal, that is, a turn-off signal to the control display circuit 20, so that the control display circuit 20 stops working. Two buttons can also be set, which, when triggered by the user, output a turn-on signal and a turn-off signal to the control display circuit 20 respectively. The specific switch circuit 40 structure and button settings can be set according to user needs.

[0062] Reference Figure 4 In one embodiment, the water quality detection and display circuit further includes:

[0063] A wireless communication circuit 50, wherein the input end of the wireless communication circuit 50 is electrically connected to the output end of the control display circuit 20, and the output end of the wireless communication circuit 50 is used for communication connection with the control terminal, and the wireless communication circuit 50 is used to send the water quality signal and water temperature signal output by the control display circuit 20 to the control terminal.

[0064] In this embodiment, the wireless communication circuit 50 can be composed of a wireless communication chip and electronic components such as resistors and capacitors. The wireless communication chip utilizes wireless communication technology, a communication method that utilizes the ability of electromagnetic wave signals to propagate in free space to exchange information. The wireless communication chip can communicate with the terminal server using 4G / 5G networks. The wireless communication chip functions as follows: A radio frequency chip is a wireless communication chip. When using discrete components, it performs simple modulation and transmission. As a complete chip, it performs complex functions such as data input, reception, temporary storage, data packaging, and power and speed regulation. Thus, the wireless communication circuit 50 can transmit the water quality and temperature signals output by the control and display circuit 20 to the control terminal, allowing the user to view the water quality and temperature of the liquid being tested. The control terminal can be a mobile phone, or, if a stirring spoon is incorporated into the control system of a smart home, the control terminal can also serve as the control terminal for all smart appliances in the home.

[0065] The present invention also proposes a water quality detection and display device, comprising a printed circuit board and the water quality detection and display circuit as described above, wherein the water quality detection and display circuit is arranged on the printed circuit board. The detailed structure of the water quality detection and display circuit can refer to the above embodiment, which will not be repeated here; it can be understood that since the above water quality detection and display circuit is used in the water quality detection and display device of the present invention, the embodiment of the water quality detection and display device of the present invention includes all the technical solutions of all the embodiments of the above water quality detection and display circuit, and the technical effects achieved are also exactly the same, which will not be repeated here. In one embodiment, the water quality detection and display device may include a shell, the shell forms a receiving cavity, the water quality detection and display circuit may be arranged on the printed circuit board, and the printed circuit board is then arranged inside the shell; the shell can be used to fix the positional relationship of the printed circuit board, ensure the safety and stability inside the receiving cavity formed by the shell of the water quality detection and display device, and prevent external gas or objects from falling on the printed circuit board when the water quality detection and display device is working, thereby affecting the operation of the water quality detection and display circuit on the printed circuit board.

[0066] The present invention also provides a stirring spoon including the above-described water quality detection and display device. The detailed structure of the water quality detection and display device can be found in the above-described embodiments and will not be further described here. It should be understood that since the above-described water quality detection and display device is used in the stirring spoon of the present invention, the embodiments of the stirring spoon of the present invention include all technical solutions of all the above-described embodiments of the water quality detection and display device, and the technical effects achieved are identical, so further description is not required here.

[0067] Reference Figure 5 In one embodiment, the stirring spoon further comprises:

[0068] A stirring spoon body, wherein the water quality detection and display device is provided on the stirring spoon body;

[0069] The retractable stirring head 100 is provided on the stirring spoon body.

[0070] In this embodiment, the stirring spoon body can be made of metal, plastic, wood, or other materials. The specific material can be selected according to user needs, and the material can also be selected based on waterproof performance. The specific shape of the stirring spoon body can also be set according to user needs. The water quality detection display device can be set at one end of the stirring spoon body, and the retractable stirring head 100 is set at the other end of the stirring spoon body. In this way, before stirring instant drinks such as milk or coffee, the user can first place the end of the stirring spoon body equipped with the detection probe 11 of the water quality detection display device into the water for testing. After confirming that the water quality and water temperature meet the user's requirements, the end of the stirring spoon body equipped with the retractable stirring head 100 can be placed into the water for stirring. The provision of the retractable stirring head 100 can make the stirring spoon easier to store.

[0071] The present invention also provides a smart home system comprising a control terminal and the stirring spoon described above, wherein the control terminal is in communication with the wireless communication circuit 50 in the stirring spoon. The detailed structure of the stirring spoon can be referred to in the above-mentioned embodiments and will not be described in detail here. It is understood that since the stirring spoon described above is used in the smart home system of the present invention, the embodiments of the smart home system of the present invention include all the technical solutions of all the above-mentioned stirring spoon embodiments, and the technical effects achieved are also identical, which will not be described in detail here. It is understood that a smart home system can generally include appliances such as refrigerators, air conditioners, desk lamps, and televisions. Through the control terminal, functions such as controlling these appliances and checking their status can be achieved. In this embodiment, a stirring spoon is added to the smart home system, and the wireless communication circuit 50 in the stirring spoon is in communication with the control terminal. In this way, the user can also view the water quality and temperature of the liquid to be tested detected by the stirring spoon through the control terminal.

[0072] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water quality detection and display circuit, applied to a stirring spoon, characterized in that: include: Water quality and temperature detection circuit, used to detect the total dissolved solids and water temperature of the liquid to be tested, and output corresponding water quality signals and water temperature signals; A control display circuit, wherein the input end of the control display circuit is connected to the output end of the water quality and water temperature detection circuit, and the control display circuit is used to display the water quality and temperature of the liquid to be measured according to the water quality signal and the water temperature signal.

2. The water quality detection and display circuit according to claim 1, characterized in that: The control and display circuit includes a first input terminal and a second input terminal, and the water quality and temperature detection circuit includes: At least one detection probe, wherein the output end of each detection probe is connected to the first input end of the control and display circuit, and each detection probe is used to detect the water quality of the liquid to be tested and output at least one water quality signal to the control and display circuit accordingly; A temperature sensor, wherein the output end of the temperature sensor is connected to the second input end of the control and display circuit, and the temperature sensor is used to detect the temperature of the liquid to be measured and output a corresponding water temperature signal to the control and display circuit.

3. The water quality detection and display circuit according to claim 1, characterized in that: The control display circuit includes: Display screen; A controller, wherein the input end of the controller is connected to the output end of the water quality and water temperature detection circuit, the output end of the controller is connected to the input end of the display screen, and the controller is used to control the operation of the display screen according to the water quality signal and the water temperature signal; A memory is electrically connected to the controller, and is used to store the water quality signal and the water temperature signal output by the controller.

4. The water quality detection and display circuit according to claim 1, characterized in that: The water quality detection and display circuit also includes: A power supply circuit, wherein the output end of the power supply circuit is respectively connected to the power supply end of the water quality and water temperature detection circuit and the power supply end of the control and display circuit, and the power supply circuit is used to provide working voltage to the water quality and water temperature detection circuit and the control and display circuit.

5. The water quality detection and display circuit according to claim 1, characterized in that: The water quality detection and display circuit also includes: A switch circuit, wherein the output end of the switch circuit is connected to the input end of the control display circuit, and when the switch circuit is triggered, the switch circuit outputs an on signal to the control display circuit to start the control display circuit; or when the switch circuit is triggered, the switch circuit outputs a off signal to the control display circuit to stop the control display circuit.

6. The water quality detection and display circuit according to claim 1, characterized in that: The water quality detection and display circuit also includes: A wireless communication circuit, wherein the input end of the wireless communication circuit is electrically connected to the output end of the control display circuit, the output end of the wireless communication circuit is used for communication connection with the control terminal, and the wireless communication circuit is used to send the water quality signal and water temperature signal output by the control display circuit to the control terminal.

7. A water quality detection and display device, characterized in that: It comprises a printed circuit board and the water quality detection and display circuit according to any one of claims 1 to 6, wherein the water quality detection and display circuit is arranged on the printed circuit board.

8. A stirring spoon, characterized in that: It includes the water quality detection and display device as described in claim 7.

9. The stirring spoon according to claim 8, wherein The stirring spoon also includes: A stirring spoon body, wherein the water quality detection and display device is provided on the stirring spoon body; The retractable stirring head is arranged on the stirring spoon body.

10. A smart home system, characterized in that: It comprises a control terminal and the stirring spoon as claimed in claim 9, wherein the control terminal is communicatively connected to the wireless communication circuit in the stirring spoon.

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