Closestool and heating control device thereof

Abstract

The utility model discloses a closestool and a heating control device thereof, and relates to the technical field of smart home, the heating control device comprises a control module, and a power detection module, a water inlet temperature detection module, a water outlet temperature detection module and a heating module which are connected with the control module, the power detection module is connected with the heating module, and the heating module is connected with the control module. The inlet water temperature detection module is arranged on a water inlet pipe of the heating control device; the outlet water temperature detection module is arranged on a water outlet pipe of the heating control device; the power detection module is used for detecting a power signal of the heating module; the control module is used for receiving the power signal, a first temperature signal, detected by the water inlet temperature detection module, of the water inlet pipe and a second temperature signal, detected by the water outlet temperature detection module, of the water outlet pipe, and generating a water flow signal of the heating module according to the power signal, the second temperature signal and the first temperature signal. The intelligent closestool solves the technical problem that reliability of water heating in the intelligent closestool is low.

Description

Technical Field

[0001] This application relates to the field of smart home technology, and in particular to toilets and their heating control devices. Background Technology

[0002] With the advancement of technology, smart toilets have become a common device in modern homes. Smart toilets typically rely on flow meters to monitor water flow in real time for accurate control of water temperature and flow rate. However, because flow meters are constantly exposed to the water environment, they are prone to failure due to scale buildup or mechanical wear, leading to abnormal water temperature control and even the risk of dry burning. Therefore, there is currently a technical problem of low reliability in water heating in smart toilets.

[0003] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Utility Model Content

[0004] The main objective of this application is to provide a toilet and its heating control device, which aims to solve the technical problem of low reliability of water heating in smart toilets.

[0005] To achieve the above objectives, this utility model proposes a heating control device for a toilet. The heating control device includes a control module, and a power detection module, an inlet water temperature detection module, an outlet water temperature detection module, and a heating module, all connected to the control module. The power detection module is connected to the heating module, the inlet water temperature detection module is installed in the inlet pipe of the heating control device, and the outlet water temperature detection module is installed in the outlet pipe of the heating control device.

[0006] The power detection module is used to detect the power signal of the heating module;

[0007] The control module is used to receive the power signal, the first temperature signal of the inlet pipe detected by the inlet water temperature detection module, and the second temperature signal of the outlet water pipe detected by the outlet water temperature detection module, and generate the water flow signal of the heating module based on the power signal, the second temperature signal, and the first temperature signal.

[0008] In one embodiment, the power detection module includes a power detection unit, a current detection unit and a voltage detection unit connected to the power detection unit;

[0009] The power detection unit is connected to the control module, and the current detection unit and the voltage detection unit are connected to the heating module.

[0010] In one embodiment, the current detection unit includes a current transformer and a current-to-voltage conversion unit, wherein the current transformer is connected to the current-to-voltage conversion unit;

[0011] The voltage detection unit includes a voltage transformer and a filter unit, and the voltage transformer is connected to the filter unit.

[0012] The current-to-voltage conversion unit and the filtering unit are both connected to the power detection unit, and the voltage transformer and the current transformer are both connected to the heating module.

[0013] In one embodiment, the heating control device further includes a water distribution valve and a water distribution valve stepper motor, wherein the water distribution valve is connected to the water distribution valve stepper motor, and the water distribution valve stepper motor is connected to the control module;

[0014] The control module is used to control the stepper motor of the water distribution valve based on the heating power detected by the power detection module, so as to control the opening degree of the water distribution valve.

[0015] In one embodiment, the heating module includes a heating element unit and a heating power control unit. The heating power control unit further includes a relay. The heating element unit is connected to the heating power control unit and the power detection module. The heating power control unit is connected to the control module. The relay is connected to the power supply.

[0016] When the control module controls the heating module to enter an idle state, and the heating power corresponding to the power signal detected by the power detection module is greater than or equal to a preset threshold, the relay in the heating power control unit is disconnected to disconnect the connection between the heating power control unit and the power source.

[0017] In one embodiment, in the event of an malfunction in the outlet water temperature detection module, the control module is used to control the heating module to heat based on the first temperature signal detected by the inlet water temperature detection module.

[0018] In one embodiment, in the event of an abnormality in the inlet water temperature detection module, the control module is used to control the heating module to heat based on the second temperature signal detected by the outlet water temperature detection module;

[0019] The power detection module is used to monitor the heating module in the event of an abnormality in the inlet water temperature detection module.

[0020] In one embodiment, the heating control device further includes a cleaning unit and a cleaning stepper motor, wherein the cleaning unit is connected to the cleaning stepper motor, and the cleaning stepper motor is connected to the control module.

[0021] In one embodiment, the cleaning unit is a spray gun.

[0022] In addition, to achieve the above objectives, this application also provides a toilet, which includes the heating control device described above.

[0023] The beneficial effects of this utility model are as follows: The heating control device of this utility model includes a control module, and a power detection module, an inlet water temperature detection module, an outlet water temperature detection module and a heating module, all of which are connected to the control module. The power detection module is connected to the heating module, the inlet water temperature detection module is installed in the inlet pipe of the heating control device, and the outlet water temperature detection module is installed in the outlet pipe of the heating control device.

[0024] In this invention, the power detection module can detect the heating power of the heating module and generate a power signal. The inlet water temperature detection module is installed in the inlet pipe of the heating control device, so the first temperature signal detected by the inlet water temperature detection module can reflect the inlet water temperature in the inlet pipe. The outlet water temperature detection module is installed in the outlet pipe of the heating control device, so the second temperature signal detected by the outlet water temperature detection module can reflect the outlet water temperature in the outlet pipe. Both the outlet water temperature detection module and the inlet water temperature detection module are connected to the control module, so the control module can receive the first temperature signal and the second temperature signal. Furthermore, since the power detection module is connected to the heating module, it can detect the power signal of the heating module, which reflects the heating power of the heating module. The power detection module is also connected to the control module, so the control module can also receive the power signal generated by the power detection module. Thus, the control module can generate a water flow signal based on the first temperature, the second temperature, and the power signal, thereby achieving water flow detection without a flow meter. This avoids abnormal water temperature control due to flow meter failure, improving the reliability of water heating in the smart toilet. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a module of an embodiment of the heating control device of this utility model;

[0028] Figure 2 This is a schematic diagram of the power detection module in an example of the heating control device of this utility model;

[0029] Figure 3This is a schematic diagram of the power detection module in another example of the heating control device of this utility model;

[0030] Figure 4 This is a circuit diagram of the power detection module in the heating control device of this utility model;

[0031] Figure 5 This is a pin diagram of the power detection chip in the heating control device of this utility model;

[0032] Figure 6 This is a schematic diagram showing the module connection of the water distribution valve and the water distribution valve stepper motor in the heating control device of this utility model;

[0033] Figure 7 This is a schematic diagram of the heating module in the heating control device of this utility model;

[0034] Figure 8 This is a schematic diagram of the circuit connection of the heating tube unit in the heating module of the heating control device of this utility model;

[0035] Figure 9 This is a circuit connection diagram of the heating power supply control unit in the heating control device of this utility model;

[0036] Figure 10 This is a circuit connection diagram of the inlet water temperature detection module and the outlet water temperature detection module in the heating control device of this utility model;

[0037] Figure 11 This is a schematic diagram showing the module connection of the cleaning unit and the cleaning stepper motor in the heating control device of this utility model;

[0038] Figure 12 This is a schematic diagram of the chip pins in an example of the heating control device of this utility model;

[0039] Figure 13 This is a schematic diagram of the chip pins of the control module in the heating control device of this utility model.

[0040] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0041] Explanation of icon numbers:

[0042] 10. Control module; 20. Inlet water temperature detection module; 30. Power detection module; 40. Heating module; 50. Outlet water temperature detection module; 31. Power detection unit; 32. Current detection unit; 33. Voltage detection unit; 60. Divider valve; 70. Divider valve stepper motor; 41. Heating power control unit; 42. Heating element unit; 421. First heating unit; 422. Second heating unit; 80. Power supply; 90. Cleaning unit; 100. Cleaning stepper motor; 321. Current-voltage conversion unit; 331. Filtering unit; U1. Power detection chip; U2. Motor control chip; U3. Control chip; ACL. Line; ACN, neutral line; CT1, current transformer; T1, voltage transformer; IC1, first optocoupler; IC2, second optocoupler; TR1, first transistor; TR2, second transistor; P1, first heating element; P2, second heating element; Q1, first transistor; Q2, second transistor; Q3, switching transistor; RV1, sliding resistor; F1, fuse; K1, relay; WT1, first thermistor; WT2, second thermistor; R1~R39, first resistor~thirty-ninth resistor; C1~C11, first capacitor~eleventh capacitor; D1~D3, first diode~third diode; L1, inductor. Detailed Implementation

[0043] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0044] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0045] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0046] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0047] Most smart toilets nowadays have a washing function, which uses a built-in heating system to heat the water to meet the user's temperature needs. For example, based on the water flow rate detected by a flow meter and the inlet and outlet water temperatures detected by a temperature sensor, the toilet controls the output of washing water at a stable and suitable temperature. However, because flow meters are constantly exposed to the water environment, they are prone to malfunction due to scale buildup or mechanical wear, leading to abnormal water temperature control or even the risk of dry burning. For instance, when the flow meter malfunctions, the corresponding water temperature curve of the smart toilet will also be abnormal, causing the smart toilet to stop the washing function. A damaged flow meter can also result in no water flow, thus reducing the user experience.

[0048] Based on this, the present application provides a heating control device, referring to... Figure 1 The heating control device includes a control module 10, a power detection module 30, an inlet water temperature detection module 20, an outlet water temperature detection module 50, and a heating module 40, all of which are connected to the control module 10. The power detection module 30 is connected to the heating module 40. The inlet water temperature detection module 20 is installed in the inlet pipe of the heating control device, and the outlet water temperature detection module 50 is installed in the outlet pipe of the heating control device.

[0049] The power detection module 30 is used to detect the power signal of the heating module 40;

[0050] The control module 10 is used to receive the power signal, the first temperature signal of the inlet pipe detected by the inlet water temperature detection module 20, and the second temperature signal of the outlet water pipe detected by the outlet water temperature detection module 50, and generate the water flow signal of the heating module 40 based on the power signal, the second temperature signal and the first temperature signal.

[0051] It should be noted that the heating control device is applied to the toilet and can be installed inside the toilet. The control module 10 can be a microprocessor, and the power detection module 30 is used to detect the heating power of the heating module 40. The heating module 40 can heat the incoming water to output water at a suitable temperature. The first temperature signal reflects the inlet water temperature of the inlet pipe, the second temperature signal reflects the outlet water temperature of the water pipe, and the power signal reflects the heating power of the heating module. Figure 1The inlet and outlet pipes of the heating control device are not shown. In the smart toilet, the energy provided by the heating module 40 can be used to heat the water flow. According to the law of conservation of energy, the heating power of the heating module 40 is equal to the heat absorbed by the water. Therefore, the water flow rate can be determined based on the first temperature signal, the second temperature signal, and the power signal. This eliminates the need for a separate flow meter. By incorporating a power detection module 30 in the heating control device, a flow meter can be replaced, thus preventing the smart toilet from failing to heat water properly and becoming unusable due to flow meter malfunction. Both the inlet water temperature detection module 20 and the outlet water temperature detection module 50 can include thermistors to detect the inlet and outlet water temperatures.

[0052] In this invention, the power detection module can detect the heating power of the heating module and generate a power signal; the inlet water temperature detection module is installed in the inlet pipe of the heating control device, so the first temperature signal detected by the inlet water temperature detection module can reflect the inlet water temperature in the inlet pipe; the outlet water temperature detection module is installed in the outlet pipe of the heating control device, so the second temperature signal detected by the outlet water temperature detection module can reflect the outlet water temperature in the pipe. Both the outlet water temperature detection module and the inlet water temperature detection module are connected to the control module, so the control module can receive the first temperature signal and the second temperature signal. Furthermore, since the power detection module is connected to the heating module, it can detect the power signal of the heating module, which reflects the heating power of the heating module. The power detection module is also connected to the control module, so the control module can also receive the power signal generated by the power detection module. Thus, the control module can generate a water flow signal based on the first temperature, the second temperature, and the power signal, thereby achieving water flow detection without a flow meter. This avoids abnormal water temperature control due to flow meter failure, improving the reliability of water heating in the smart toilet.

[0053] Furthermore, in a feasible embodiment, referring to Figure 2 and Figure 3 The power detection module 30 includes a power detection unit 31, a current detection unit 32 and a voltage detection unit 33 connected to the power detection unit 31;

[0054] The power detection unit 31 is connected to the control module 10, and the current detection unit 32 and the voltage detection unit 33 are connected to the heating module 40.

[0055] It should be noted that the power detection unit 31 can be a power detection chip, the current detection unit 32 is used to detect the current of the heating module 40, and the voltage detection unit 33 is used to detect the voltage of the heating module 40. Both the current detection unit 32 and the voltage detection unit 33 can be connected to the power detection unit 31. The power detection unit 31 can output the heating power of the heating module 40 based on the current detected by the current detection unit 32 and the voltage detected by the voltage detection unit 33. This facilitates the determination of water flow and the monitoring of whether the heating power of the heating module 40 is normal. This allows for timely intervention in case of abnormal heating power, such as disconnecting the power supply to the heating module 40, thereby improving the safety of the smart toilet.

[0056] Furthermore, in a feasible embodiment, referring to Figure 3 and Figure 5 The current detection unit 32 includes a current transformer CT1 and a current-to-voltage conversion unit 321, with the current transformer CT1 connected to the current-to-voltage conversion unit 321.

[0057] The voltage detection unit 33 includes a voltage transformer T1 and a filter unit 331, with the voltage transformer T1 connected to the filter unit 331;

[0058] The current-to-voltage conversion unit and the filtering unit are both connected to the power detection unit 31, and the voltage transformer T1 and the current transformer CT1 are both connected to the heating module 40.

[0059] It should be noted that the power detection unit 31 can be a power detection chip. The current transformer CT1 can be used to detect current, and the voltage transformer T1 can be used to detect voltage. The current transformer CT1 is also connected to the live wire ACL, and the voltage transformer T1 is also connected to the neutral wire ACN. A voltage divider unit is also provided between the voltage transformer T1 and ACN. This voltage divider unit can be used to convert the high voltage into a voltage that is easy for the voltage transformer T1 to detect. The heating module 40 is also connected to ACL and ACN. Therefore, connecting the current transformer CT1 to ACL is equivalent to connecting it to the heating module 40, and connecting the voltage transformer T1 to ACN is also equivalent to connecting it to the heating module 40. Thus, voltage and current can be detected by the voltage transformer T1 and the current transformer CT1 respectively.

[0060] The current-to-voltage conversion unit is used to convert current into voltage. Since the output of the current transformer CT1 is a current signal, while most measurement circuits, such as power detection chips, require a voltage signal as input, the current needs to be converted into a voltage input to the power detection chip. The power detection chip can then convert the input voltage value into the corresponding current value.

[0061] Reference Figure 2The current-to-voltage conversion unit includes a first resistor to a third resistor, a first capacitor, and a second capacitor. The first end of the first resistor is connected to the first end of the second resistor, the second end of the second resistor is connected to the first end of the first capacitor, the first end of the first capacitor is connected to the IP1 interface, the IP1 interface is connected to the IP pin of the power detection unit 31, the second end of the first capacitor is connected to the second capacitor, the second end of the second capacitor is connected to the IN1 interface, and the IN1 interface is connected to the IN pin of the power detection unit 31, thereby transmitting the converted voltage signal to the power detection unit 31.

[0062] The filtering unit is used to filter out high-frequency noise or interference signals to improve measurement accuracy. The filtering unit includes a fourth resistor, a fifth resistor, and a third capacitor. The first terminal of the third capacitor is connected to the VP1 interface, which is connected to the VP pin of the power detection unit 31. The VP1 interface is used to transmit the acquired voltage signal to the power detection chip. The second terminal of the third capacitor is grounded. The voltage detection unit 33 may also include a voltage divider unit, which includes resistors R6 through R10 connected in sequence.

[0063] In the power detection chip U1, the IP and IN pins are used to receive the input from the current detection unit 32, the VP pin is used to receive the input from the voltage detection unit 33, VDD is the power supply input to the power detection chip, and GND is grounded. The TX, RX, SCLK, SEL, and CF1 pins of the power detection chip are all connected to the control module 10.

[0064] In one feasible embodiment, refer to Figure 6 The heating control device also includes a water distribution valve 60 and a water distribution valve 60 stepper motor. The water distribution valve 60 is connected to the water distribution valve 60 stepper motor, and the water distribution valve 60 stepper motor is connected to the control module 10.

[0065] The control module 10 is used to control the stepper motor of the water distribution valve 60 based on the heating power detected by the power detection module 30, so as to control the opening degree of the water distribution valve 60.

[0066] It should be noted that the water distribution valve 60 can be used to adjust the output water flow. The larger the opening of the water distribution valve 60, the greater the output flow; the smaller the opening of the water distribution valve 60, the less the output flow. The stepper motor of the water distribution valve 60 can be used to adjust the opening of the water distribution valve 60. The stepper motor of the water distribution valve 60 can be connected to the control module 10. A motor control chip can also be set between the stepper motor of the water distribution valve 60 and the control module 10. For example, the control module 10 is connected to the motor control chip, the motor control chip is connected to the stepper motor of the water distribution valve 60, and the stepper motor of the water distribution valve 60 is connected to the water distribution valve 60.

[0067] In conventional smart toilets, a fixed number of steps in the motor of the distribution valve is used to maintain a fixed cleaning flow rate during the cleaning process. However, when differences in the flow rates of other components cause variations in the overall flow rate, it can lead to exceeding the rated power and abnormal water temperature profiles. This circuit detects the real-time heating power and fine-tunes the number of steps in the motor of the distribution valve 60 to ensure that the flow rate and power meet design requirements. This reduces the frequency of component replacements when power is abnormal, improves production yield, and increases testing reliability.

[0068] To achieve its cleaning function, a smart toilet has multiple internal components, such as water inlet, water outlet, and pipes. However, the flow rates of these different components vary, which can easily cause changes in the overall flow rate. For example, the heating module 40 may need to heat more water, but in order to maintain the preset water temperature, it may require more heating power. This could result in the heating module 40's actual heating power exceeding its rated power, which could easily lead to a malfunction of the smart toilet.

[0069] Therefore, in this embodiment, the heating power of the heating module 40 can be detected in real time by the power detection module 30. The control module 10 can adjust the opening degree of the water distribution valve 60 according to the heating power, so as to ensure that the actual heating power of the heating module 40 is within the rated power range of the heating module 40 while maintaining the preset outlet water temperature. This reduces the occurrence of smart toilet malfunctions caused by abnormal power, improves the production yield of smart toilets, and increases the reliability of smart toilets. For example, in this embodiment, the control module 10 can adjust the opening degree of the water distribution valve 60 by fine-tuning the number of steps of the stepper motor of the water distribution valve 60.

[0070] Furthermore, in a feasible embodiment, please refer to Figure 7 The heating module 40 includes a heating tube unit 42 and a heating power control unit 41. The heating tube unit 42 is connected to the heating power control unit 41 and the power detection module 30. The heating power control unit 41 is connected to the control module 10 and the power supply.

[0071] When the control module 10 controls the heating module 40 to enter an idle state, and the heating power corresponding to the power signal detected by the power detection module 30 is greater than a preset threshold, the control module 10 controls the relay in the heating power control unit 41 to disconnect from the power supply.

[0072] It should be noted that the heating element unit 42 is used for heating. The heating element unit 42 includes a first heating element 421 and a second heating element 422. Both the first heating element 421 and the second heating element 422 are connected to the heating power control unit 41 and the power detection module 30. The heating power control unit 41 is connected to a power source and is also connected to the heating element unit 42, thus providing electrical energy to the heating element unit 42. The heating power control unit 41 includes a relay. When the relay is closed, it provides electrical energy to the heating element unit 42; when the relay is open, it does not provide electrical energy to the heating element unit 42, and the heating element unit 42 stops working. The power signal reflects the heating power of the heating module.

[0073] The heating module 40 entering an idle state means that the heating module 40 does not need to perform heating operations. For example, when the smart toilet is not in use, the heating module 40 can be in an idle state. When the heating module 40 is in an idle state, if the power detection module 30 detects that the heating power is greater than or equal to a preset threshold, the control module 10 will control the relay in the heating power control unit 41 to disconnect from the power supply, thereby ensuring the safety of the smart toilet. The preset threshold can be set based on actual conditions; for example, the preset threshold can be the maximum power of the heating module 40. This avoids the heating module 40 from continuously heating, thus preventing the water temperature from becoming too high and ensuring the safe use of the smart toilet.

[0074] Additionally, please refer to Figure 8 The first heating unit 421 includes: a heating tube P1, an eleventh resistor to a twentieth resistor, a fourth capacitor, a first optocoupler IC1, a first transistor Q1, and a first transistor TR1. The first heating unit 421 includes a TRI1 interface, which is connected to the IO18 pin of the control module 10.

[0075] The second heating unit 422 includes: a heating element P2, resistors 22 to 30, a fifth capacitor, a second optocoupler IC2, a second transistor Q2, and a second transistor TR2. The second heating unit 422 includes a TRI2 interface, which is connected to the IO17 pin of the control module 10. The maximum power of the heating element unit 42 can be the sum of the power corresponding to the first heating unit 421 and the power corresponding to the second heating unit 422. For example, if the power of both the first heating unit 421 and the second heating unit 422 is 800W, the maximum power of the heating element unit 42 can be 1600W. The first heating unit 421 is also connected to the live wire ACL and the neutral wire ACN, and the power detection module 30 can also be connected to the live wire ACL and the neutral wire ACN. Similarly, the second heating unit 422 is also connected to the live wire ACL and the neutral wire ACN, and the power detection module 30 can also be connected to the live wire ACL and the neutral wire ACN, thereby detecting the heating power of the heating element unit 42.

[0076] Please refer to again Figure 9 , Figure 9 This is a circuit diagram of the heating power supply control unit 41, which includes: relay K1, resistors 31 to 34, capacitors 5 to 9, switching transistor Q3, diodes 1 to 3, connector J2, crystal oscillator X1, fuse F1, sliding resistor RV1, inductor L1, and PWR_SELECTION interface. Figure 9 In this diagram, J1 represents the power supply. The heating power supply control unit 41 can be used to cut off the power supply or to connect to it. The PWR_SELECTION interface is connected to the control module 10. The connection relationships of the components in the heating power supply control unit 41 can be found in [reference needed]. Figure 9 This embodiment will not elaborate further on this.

[0077] Furthermore, refer to Figure 10 In the event of an abnormality in the outlet water temperature detection module 50, the control module 10 controls the heating module 40 to heat based on the inlet water temperature detected by the first temperature signal detection module 20.

[0078] It should be noted that the outlet water temperature detection module 50 includes a first thermistor WT1, and also includes an outNTC interface, which is connected to the control module 10. The outlet water temperature detection module 50 also includes a thirty-eighth resistor, a thirty-ninth resistor, and an eleventh capacitor, with the thirty-eighth resistor also connected to a 5V power supply. The connection relationship between the thirty-eighth resistor R38, the thirty-ninth resistor R39, the eleventh capacitor C1, and the first thermistor WT1 can be found in [reference needed]. Figure 10 This embodiment will not elaborate further on this.

[0079] The abnormal situation of the outlet water temperature detection module 50 includes the inability of the outlet water temperature detection module 50 to detect the outlet water temperature. When the outlet water temperature detection module 50 is abnormal, the control module 10 can control the heating module 40 to heat based on the inlet water temperature detected by the inlet water temperature detection module 20. For example, different inlet water temperatures can correspond to different heating powers, and the control module 10 can control the heating module 40 to heat according to the inlet water temperature.

[0080] In other embodiments, the water outlet temperature detection module 50 may malfunction during normal cleaning operations of the smart toilet. In this case, the control module 10 can store the heating power detected by the power detection module 30 during normal cleaning operations. Then, when the water outlet temperature detection module 50 malfunctions, the control module 10 can control the heating module 40 to heat based on the heating power used during normal cleaning and the inlet water temperature. For example, when the inlet water temperature when the water outlet temperature detection module 50 malfunctions is the same as the inlet water temperature during normal cleaning, the heating power used during normal cleaning can be used. When the inlet water temperature when the water outlet temperature detection module 50 malfunctions is different from the inlet water temperature during normal cleaning, the heating module 40 can be controlled to heat based on the inlet water temperature when the water outlet temperature detection module 50 malfunctions. For example, if the inlet water temperature is low, the heating power can be higher; if the inlet water temperature is high, the heating power can be lower, or the heating module 40 can stop heating altogether to avoid scalding.

[0081] In this embodiment, even if the water temperature detection module 50 is detected to be abnormal during the cleaning process of the smart toilet, the cleaning function can still continue, while ensuring a suitable water temperature, without directly stopping the cleaning process. This improves the reliability of the smart toilet's cleaning function and enhances the user experience.

[0082] In one feasible embodiment, please refer to Figure 10 In the event of an abnormality in the inlet water temperature detection module 20, the control module 10 controls the heating module 40 to heat based on the second temperature signal detected by the outlet water temperature detection module 50.

[0083] The power detection module 30 is used to monitor the heating module 40 in the event of an abnormality in the inlet water temperature detection module 20.

[0084] It should be noted that the inlet water temperature detection module 20 includes a second thermistor WT1, and also includes an inNTC interface, which is connected to the control module 10. The inlet water temperature detection module 20 also includes a thirty-sixth resistor R36, a thirty-seventh resistor R37, and a tenth capacitor C10. The thirty-sixth resistor is also connected to a 5V power supply. The connection relationship between the thirty-sixth resistor R36, the thirty-seventh resistor R36, the tenth capacitor C10, and the second thermistor can be found by referring to... Figure 10 This embodiment will not elaborate further on this.

[0085] When the smart toilet activates its cleaning function, if the inlet water temperature detection module 20 malfunctions, the control module 10 can generate a target heating signal based on the outlet water temperature and output this signal to the heating module 40. This target heating signal includes a target heating power. Upon receiving the target heating power, the heating module 40 can heat the water according to that power. Simultaneously, the power detection module 30 monitors the actual heating power of the heating module 40 in real time. If the difference between the actual power and the target heating power exceeds a preset heating threshold, a heating anomaly signal is generated and transmitted to the control module 10. Upon receiving this signal, the control module 10 will stop the heating module 40 to ensure heating reliability and safety. For example, with a constant water flow rate, the control module 10 can determine the target heating power based on the outlet water temperature and the specific heat capacity of water to ensure the smart toilet maintains a relatively stable outlet water temperature.

[0086] This embodiment controls the heating module 40 by controlling the outlet water temperature, which avoids situations where heating stops due to malfunction of the inlet water temperature detection module 20, preventing the toilet from washing properly and thus improving the user experience. This embodiment also solves the problem of poor user experience caused by malfunctions in the internal components of the smart toilet leading to abnormal washing function.

[0087] In one feasible embodiment, please refer to Figure 11 and Figure 12 The heating control device also includes a cleaning unit 90 and a cleaning stepper motor 100. The cleaning unit 90 is connected to the cleaning stepper motor 100, and the cleaning stepper motor 100 is connected to the control module 10.

[0088] The cleaning unit 90 is a spray gun.

[0089] It should be noted that the cleaning stepper motor 100 can be used to adjust the front and rear position of the cleaning unit 90. For example, it can adjust the front and rear position of the spray gun to facilitate cleaning by the user. The control module 10 can control the cleaning stepper motor 100, thereby controlling the position of the cleaning unit 90.

[0090] This embodiment controls the position of the spray gun to adapt to the cleaning needs of different users, thereby improving the user's cleaning experience.

[0091] Figure 12The diagram shows the interfaces of the cleaning stepper motor 100CN2 and the corresponding interfaces of the water distribution valve 60 stepper motor. A chip U2 is also provided between the cleaning stepper motor 100 and the control module 10. Chip U2 can be a motor control chip and can be connected to the control module 10, which can also be a control chip. Figure 12 In the motor control chip U2, pins 1B to 8B correspond to the SW MOTOR1~SW MOTOR2 and WF MOTOR1~WFMOTOR2 interfaces, respectively. Both the SW MOTOR1~SW MOTOR2 and WF MOTOR1~WF MOTOR2 interfaces are connected to the control module 10, for example, connecting pins IO1 to IO8 of the control module 10. (See reference...) Figure 13 , Figure 13 This is a schematic diagram of the chip pins corresponding to control module 10. Figure 12 In the circuit, the SW OUT1 to SW OUT4 interfaces corresponding to the stepper motor of the water distribution valve 60 are connected to the 1C to 4C interfaces in chip U2, and the WF OUT1 to WF OUT4 interfaces corresponding to the cleaning stepper motor 100 are connected to the 5C to 8C interfaces in chip U2. The NC pin in chip U2 is an unused pin.

[0092] exist Figure 13 In the configuration, pin IO9 of control chip U3 is connected to the PWR_SELECTION interface, pin IO20 is connected to the inNTC interface of inlet water temperature detection module 20, pin IO19 is connected to the outNTC interface of inlet water temperature detection module 20, pin IO18 is connected to TR11 of the first heating unit 421, pin IO19 is connected to TR12 of the second heating unit 422, and pins IO12 to IO16 are connected to the corresponding interfaces in the power detection chip. For details, please refer to... Figure 13 and Figure 5 This embodiment will not elaborate further on this. In the control chip, the VSS pin is grounded, and VDD can be connected to a 5V power supply.

[0093] In addition, this application also provides a toilet that includes the heating control device provided in the above embodiments.

[0094] Since the toilet proposed in this embodiment includes the heating control device proposed in the above embodiments, it has the beneficial effects of the above embodiments. For details on the specific working process and principle of the heating control device, please refer to the heating control devices provided in the above embodiments. They will not be described in detail here, and all are within the protection scope of this embodiment.

[0095] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent scope of this application.

Claims

1. A heating control device for a toilet, characterized by comprising: The heating control device comprises a control module, a power detection module, an inlet water temperature detection module, an outlet water temperature detection module and a heating module, all of which are connected with the control module; the power detection module is connected with the heating module; the inlet water temperature detection module is arranged on an inlet water pipe of the heating control device; and the outlet water temperature detection module is arranged on an outlet water pipe of the heating control device. The power detection module is configured to detect a power signal of the heating module. The control module is configured to receive the power signal, a first temperature signal of the inlet water pipe detected by the inlet water temperature detection module, and a second temperature signal of the outlet water pipe detected by the outlet water temperature detection module, and generate a water flow signal of the heating module according to the power signal, the second temperature signal and the first temperature signal.

2. The heating control device of claim 1, wherein, The power detection module comprises a power detection unit, a current detection unit and a voltage detection unit connected with the power detection unit. The power detection unit is connected with the control module; and the current detection unit and the voltage detection unit are connected with the heating module.

3. The heating control device of claim 2, wherein, The current detection unit comprises a current transformer and a current-voltage conversion unit; the current transformer is connected with the current-voltage conversion unit. The voltage detection unit comprises a voltage transformer and a filter unit; the voltage transformer is connected with the filter unit. The current-voltage conversion unit and the filter unit are connected with the power detection unit; and the voltage transformer and the current transformer are connected with the heating module.

4. The heating control device of claim 1, wherein, The heating control device further comprises a water distribution valve and a water distribution valve stepping motor; the water distribution valve is connected with the water distribution valve stepping motor; and the water distribution valve stepping motor is connected with the control module. The control module is configured to control the water distribution valve stepping motor based on the heating power detected by the power detection module, so as to control the opening degree of the water distribution valve.

5. The heating control device of claim 1, wherein, The heating module comprises a heating pipe unit and a heating power control unit; the heating power control unit further comprises a relay; the heating pipe unit is connected with the heating power control unit and the power detection module; the heating power control unit is connected with the control module; and the relay is connected with a power supply. In a case where the control module controls the heating module to enter an idle state and the power signal detected by the power detection module corresponds to a heating power greater than or equal to a preset threshold, the relay in the heating power control unit is disconnected, so as to disconnect the connection between the heating power control unit and the power supply.

6. The heating control device of claim 1, wherein, In a case where the outlet water temperature detection module is abnormal, the control module is configured to control the heating module to heat based on the first temperature signal detected by the inlet water temperature detection module.

7. The heating control device of claim 1, wherein, In a case where the inlet water temperature detection module is abnormal, the control module is configured to control the heating module to heat based on the second temperature signal detected by the outlet water temperature detection module. The power detection module is configured to monitor the heating module in a case where the inlet water temperature detection module is abnormal.

8. The heating control device of claim 1, wherein, The heating control device further comprises a cleaning unit and a cleaning stepping motor, the cleaning unit is connected with the cleaning stepping motor, and the cleaning stepping motor is connected with the control module.

9. The heating control device of claim 8, wherein, The cleaning unit is a spray gun.

10. A toilet characterized by The toilet comprises the heating control device as claimed in any one of claims 1 to 9.

Images