A power supply device, an automatic flushing system and a method for a toilet

Abstract

A power supply device, an automatic flushing system and a method for a toilet, comprising a control unit, an induction unit, a power generation unit, an energy storage unit, a determination unit and an energy-saving power supply unit; the power generation unit is connected with a cover to convert kinetic energy of the cover into electric energy; the energy storage unit is connected with the power generation unit to store the electric energy; the energy-saving power supply unit is connected with the energy storage unit and the induction unit to intermittently supply power to the induction unit; the determination unit is connected with the induction unit and the control unit to turn on or off the power supply to the control unit according to the level signal of the action output of the induction signal. The present application does not affect the user operation, reduces power consumption and prolongs the power supply time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bathroom, in particular to a toilet power supply device, an automatic flushing system and method. BACKGROUND

[0002] Most of the existing intelligent toilets are powered by external power supply, which requires a socket to be installed in advance near the toilet. Some use batteries for power supply, but need to be replaced frequently, which is not only troublesome but also very environmentally unfriendly.

[0003] Currently, a self-generating remote control panel switch appears on the market, which uses the action of the panel switch to change the magnetic flux of the internal self-induction coil to generate electric charge to power the remote control to trigger the remote control instruction to replace the battery power supply. For this self-generating power supply method through switch action, the electric quantity generated is too small due to the short duration of the action, which is not enough to support the automatic seat-off flushing action of the device itself, including seat-on / seat-off detection and flushing drive. If you want to increase the amount of self-generated power, it will increase the difficulty of switch action, including force and stroke, and increase the operation difficulty of the user in the use process.

[0004] There is also a key automatic flushing under no power supply condition, which uses self-stored power (super capacitor) or self-provided backup battery power supply to realize the key triggering power supply to complete the subsequent flushing function after defecation. If the automatic seat-off flushing method (including seat-on / seat-off and flushing drive) is used, the stored power or battery cannot support long-term repeated work. SUMMARY

[0005] The main purpose of the present application is to overcome the defects of insufficient power supply and increased operation difficulty in the prior art self-generating flushing, and to provide a toilet power supply device, an automatic flushing system and method, which does not affect user operation, reduces power consumption and prolongs power supply time.

[0006] The present application adopts the following technical solutions:

[0007] A toilet power supply device, comprising a control unit and an induction unit, characterized in that: it further comprises a power generation unit, an energy storage unit, a judgment unit and an energy-saving power supply unit; the power generation unit is connected with the cover body to convert the kinetic energy of the cover body into electric energy; the energy storage unit is connected with the power generation unit to store the electric energy; the energy-saving power supply unit is connected with the energy storage unit and the induction unit to intermittently power the induction unit; the judgment unit is connected with the induction unit and the control unit to turn on or off the power supply to the control unit according to the level signal output by the induction signal action.

[0008] Preferably, the cover plate is provided with a connecting shaft; the power generation unit comprises a motor, a gear set and a processing circuit, the gear set is connected between the connecting shaft and the motor to transmit the rotating speed of the connecting shaft to the motor to generate electricity, and the processing circuit is connected to the motor to rectify, limit current and limit voltage of the electricity; and the energy storage unit is connected to the processing circuit.

[0009] Preferably, the processing circuit comprises a rectifier circuit, a constant current circuit and a voltage stabilizing circuit; the rectifier circuit is connected to the motor to rectify the electricity; the constant current circuit is connected to the output end of the rectifier circuit to limit the current after rectification, the voltage stabilizing circuit is connected to the constant current circuit to limit the voltage of the current output by the constant current circuit; and the energy storage unit is connected to the voltage stabilizing circuit.

[0010] Preferably, the energy-saving power supply unit comprises a hysteresis comparison circuit and a power taking switch circuit; the power taking switch circuit is connected to the induction unit and the energy storage unit and is provided with a first capacitor and a control switch, the first capacitor is charged to trigger the control switch to open the power supply to the induction unit, and the first capacitor is discharged to trigger the control switch to close the power supply to the induction unit after the first capacitor is fully charged; the hysteresis comparison circuit is connected to the power taking switch circuit and is provided with a second capacitor, the second capacitor is charged when the control switch opens the power supply to the induction unit and is discharged when the control switch closes the power supply to the induction unit, and the first capacitor is discharged when the voltage of the second capacitor is less than a set value.

[0011] Preferably, the determination unit is provided with a first switch circuit, a flag capacitor and a second switch circuit, the first switch circuit is connected to the induction unit and the flag capacitor to open or close the charging of the flag capacitor according to the induction signal, and the second switch circuit is connected to the flag capacitor to open or close the power supply to the control unit according to the state of the flag capacitor.

[0012] Preferably, the voltage stabilizing unit is further connected to the energy storage unit, the determination unit and the control unit to open or close the power supply to the control unit according to the level signal.

[0013] Preferably, the voltage stabilizing unit comprises a voltage stabilizing chip and a switch element, the switch element is connected to the determination unit and the energy storage unit to open or close the voltage stabilizing chip according to the level signal output by the determination unit.

[0014] An automatic flushing system of a toilet, comprising a flushing valve, characterized in that the system further comprises a power supply device of the toilet, the determination unit is provided with a flag signal, the flag signal is valid when the sensing unit detects that a user uses the toilet, the determination unit further performs logical determination according to the flag signal and the sensing signal to determine whether to output a flushing signal, and the control unit controls the flushing valve to act according to the flushing signal and clears the flag signal.

[0015] Preferably, the system further comprises an electric quantity detection unit connected to the energy storage unit to detect the residual electric quantity of the energy storage unit, and the control unit is connected to the electric quantity detection unit to control different flushing actions according to the residual electric quantity after receiving the flushing signal.

[0016] Preferably, the system further comprises a reminding unit connected to the control unit to control the reminding unit to remind when the residual electric quantity is insufficient to perform the flushing action.

[0017] An automatic flushing method of a toilet, characterized in that kinetic energy of a cover body is converted into electric energy for storage, the stored electric energy is used to intermittently supply power to a sensing unit, and a control unit of the toilet is powered on or off according to a level signal output by the sensing unit.

[0018] The sensing unit detects that a user uses the toilet, and a preset flag signal is set to be valid, logical determination is performed according to the flag signal and the sensing signal to determine whether to output a flushing signal, and the control unit controls the toilet to flush according to the flushing signal and clears the flag signal.

[0019] Preferably, the system further comprises a detection unit to detect the residual electric quantity of the stored electric energy, and the control unit controls different flushing actions according to the residual electric quantity after receiving the flushing signal.

[0020] Preferably, the control of different flushing actions according to the residual electric quantity specifically includes: when the residual electric quantity E satisfies E≥E1, the toilet is controlled to perform a complete flushing action; when the residual electric quantity E satisfies E1﹥E≥E2, the toilet is controlled to perform a simplified flushing action; and when the residual electric quantity E satisfies E<E2, no flushing action is performed; E1 and E2 are preset threshold values, and E1>E2.

[0021] As can be seen from the above description of the present application, compared with the prior art, the present application has the following beneficial effects:

[0022] 1. The application includes a power generation unit, an energy storage unit, a determination unit and an energy-saving power supply unit, etc. The kinetic energy of the cover is converted into electrical energy by the power generation unit and stored in the energy storage unit. The energy-saving power supply unit intermittently supplies power to the sensing unit. The determination unit opens or closes the power supply to the control unit according to the level signal output by the sensing signal. The cover generates electricity, which has little effect on the normal use of the user. The intermittent power supply of the sensing module can prolong the power supply time.

[0023] 2. The power generation unit includes a motor, a variable speed gear set and a processing circuit. The rotation of the cover plate is transmitted to the motor after being speeded up by the variable speed gear set to generate electricity. The required working power can be easily generated. The processing circuit rectifies, limits and limits the voltage to meet the power supply demand. The processing circuit sets a voltage stabilizing circuit to stabilize the voltage and prevent the motor from emitting too high a voltage to break the energy storage unit.

[0024] 3. The energy-saving power supply unit includes a hysteresis comparison circuit and a power taking switch circuit. The power taking switch circuit charges the first capacitor to trigger the control switch to open the power supply to the sensing unit. The first capacitor is charged and the control switch is closed to stop the power supply to the sensing unit. The second capacitor charges when the control switch is open to supply power to the sensing unit, and discharges when the control switch is closed to supply power to the sensing unit. When the second capacitor discharges to a voltage less than the set value, the first capacitor discharges. This intermittent power supply can reduce the power consumption of the sensing unit.

[0025] 4. The determination unit is provided with a first switch circuit, a flag capacitor and a second switch circuit. The first switch circuit opens or closes the charging of the flag capacitor according to the sensing signal. The second switch circuit opens or closes the power supply to the control unit according to the state of the flag capacitor. This combination of sensing unit signal control over the power supply state of the control unit makes the utilization rate of the power higher. The voltage stabilizing unit opens or closes the power supply to the control unit to ensure stable and safe power supply voltage.

[0026] 5. The determination unit also determines whether to output a flushing signal according to the logic determination of the flag signal and the sensing signal. The control unit controls the flushing valve to act and clear the flag signal according to the flushing signal. When the flushing signal is sent, the determination unit also controls the power supply to the control unit to ensure that it can control the flushing valve to act.

[0027] 6. The application also provides an electric quantity detection unit to detect the remaining power of the energy storage unit. Different flushing actions are controlled according to the remaining power, including complete flushing action and simplified flushing action. When the remaining power is insufficient, the user can also be reminded. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1Figure 2 is a schematic view of the cover cooperating with the power generation unit;

[0029] Figure 2 Figure 4 is a block diagram of the device module of the present application;

[0030] Figure 3 Figure 5 is a block diagram of the processing circuit;

[0031] Figure 4 Figure 6 is a block diagram of the voltage stabilizing unit;

[0032] Figure 5 Figure 7 is a circuit diagram of the judging unit;

[0033] Figure 6 Figure 8 is a circuit diagram of the energy-saving power supply unit;

[0034] Wherein:

[0035] 10, control unit, 11, cover, 12, connecting shaft, 13, flushing valve, 20, sensing unit, 31, motor, 32, gear set, 33, processing circuit, 40, energy storage unit, 50, judging unit, 60, energy-saving power supply unit, 81, hysteresis comparison circuit, 82, power-on switch circuit, 70, voltage stabilizing unit, 80, electric quantity detection unit,

[0036] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments. DETAILED DESCRIPTION

[0037] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] In the present application, the terms "first", "second", "third" and the like are used only to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. In the description, the directions or positions indicated by "up", "down", "left", "right", "front" and "back" are based on the directions or positions shown in the drawings, and are only used to facilitate the description of the present application, and cannot be understood as indicating or implying that the device must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association between the associated objects described by "and / or" can exist in three ways, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0040] Referring toFigure 2 A power supply device for a toilet, comprising a control unit 10, an induction unit 20, a power generation unit, an energy storage unit 40, a determination unit 50, an energy-saving power supply unit 60, etc. The power generation unit is connected to the cover plate 11 to convert the kinetic energy of the cover plate 11 into electrical energy, i.e. to convert the kinetic energy generated by the action of opening or closing the cover plate 11 into electrical energy output. See Figure 1 The power generation unit comprises a motor 31, a variable speed gear set 32, and a processing circuit 33, etc. The variable speed gear set 32 is connected between the connecting shaft 12 of the cover plate 11 and the input shaft of the motor 31, for transmitting the rotational speed of the connecting shaft 12 to the motor 31 after speed conversion to realize power generation. The processing circuit 33 is connected to the motor 31 to rectify, limit current and voltage, etc. of the electrical energy generated by the motor 31.

[0041] See Figure 3 The processing circuit 33 comprises a rectifier circuit, a constant current circuit, and a voltage stabilizing circuit, etc. The rectifier circuit is connected to the motor 31 to rectify the electrical energy, and the rectifier circuit can use bridge rectification, etc. See the four diodes BR1 in the figure to form a bridge rectifier. The constant current circuit is connected to the output end of the rectifier circuit to limit the current after rectification. See the resistor R14, the capacitor C4, the transistor T2, the transistor T1, and the resistor R16, etc. in the figure. One end of the resistor R14 is connected to the output end of the rectifier circuit, one end of the capacitor C4, and the emitter of the transistor T2. The other end of the resistor R14 is connected to the base of the transistor T2 and the emitter of the transistor T1. The collector of the transistor T2 and the base of the transistor T1 are connected to one end of the resistor R16. The other end of R16 and the other end of the capacitor C4 are grounded. The resistor R14 is a constant current sampling resistor, and its value can be used to set the constant current value parameter. The electrical current generated by the motor 31 is set to limit the damping size of the motor 31 during rotation, to ensure that the user can easily turn the cover plate 11 without being difficult to turn because of the excessive damping of the motor 31.

[0042] The voltage stabilizing circuit is connected to the constant current circuit to limit the voltage of the current output by the constant current circuit before storing it to the energy storage unit 40, to prevent the motor 31 from emitting too high voltage to break the energy storage unit 40. The voltage stabilizing circuit in the figure can comprise the capacitor EC3, the resistor R15, the diode DZ1, the transistor T3, and the capacitor EC2. One end of the capacitor EC3 is connected to the collector of the transistor T1 of the constant current circuit, one end of the resistor R15, and the collector of the transistor T3. The other end of the capacitor EC3 is grounded. The other end of the resistor R15 is connected to one end of the diode DZ1 and one end of the capacitor EC2. The other end of the diode DZ1 and the other end of the capacitor EC2 are grounded.

[0043] The energy storage unit 40 is connected to the power generation unit to store electrical energy. Specifically, the energy storage unit 40 is connected to the voltage stabilizing circuit in the processing circuit 33. The super capacitor EC4 in the figure can be used as the energy storage unit 40. One end of the super capacitor EC4 is connected to the emitter of the transistor T3, and the other end is grounded.

[0044] The energy-saving power supply unit 60 is connected with the energy storage unit 40 and the sensing unit 20 to intermittently supply power to the sensing unit 20. In the present application, the sensing unit 20 can be a seat sensor or a microwave sensor or an infrared sensor, etc. for detecting whether a user uses the closestool. By using this intermittent power supply mode, the power consumption of the sensing unit 20 can be reduced. The energy-saving power supply unit 60 mainly comprises a power-on switch circuit 82 and a hysteresis comparison circuit 81. The power-on switch circuit 82 is connected with the sensing unit 20 and the energy storage unit 40 and is provided with a first capacitor C1 and a control switch Q6. The power-on switch circuit 82 charges the first capacitor C1 to trigger the control switch Q6 to open the power supply to the sensing unit 20. When the first capacitor C1 is fully charged, the control switch Q6 is triggered to close the power supply to the sensing unit 20.

[0045] Referring to Figure 6 , the power-on switch circuit 82 further comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R12, a resistor R11, a resistor R13, a capacitor C2, a switch Q1, a switch Q2, a switch Q4 and a capacitor EC1, etc. One end of the capacitor C2 is connected with the hysteresis comparison circuit 81, the other end of the capacitor C2 is connected with one end of the resistor R4 and the gate of the switch Q4, the other end of the resistor R4 is connected with the drain of the switch Q4, one end of the resistor R1 and VDD, the source of the switch Q4 is connected with the resistor R3 and the gate of the switch Q2, the other end of the resistor R3 and the source of the switch Q2 are grounded, the drain of the switch Q2 is connected with the other end of the resistor R1 and one end of the first capacitor C1, the other end of the first capacitor C1 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with one end of the resistor R13, one end of the diode D1 and the gate of the switch Q1, the other end of the diode D1, the other end of the resistor R13 and the source of the switch Q1 are grounded, the drain of the switch Q1 is connected with one end of the resistor R12, the other end of the resistor R12 is connected with one end of the resistor R11 and the gate of the control switch Q6, the other end of the resistor R11 is connected with the source of the control switch Q6, the drain of the control switch Q6 is connected with one end of the capacitor EC1, and the other end of the capacitor EC1 is grounded.

[0046] For the power-on switch circuit 82, the first capacitor C1 charges through the loop composed of the resistor R1, the first capacitor C1, the resistor R2 and the resistor R13, and triggers the switch Q1 to open the control switch Q6 to supply power to VBB. The power supply time is the time constant of the loop. When the first capacitor C1 is fully charged, the control switch Q6 is closed to cut off the power supply of VBB. Therefore, the opening time of the control switch Q6 is the working time of the sensing module, and the closing time of the control switch Q6 is the power-off time of the sensing module.

[0047] The hysteresis comparison circuit 81 is connected with the power taking switch circuit 82 and is provided with a second capacitor C3. The second capacitor C3 is charged when the control switch Q6 is opened to supply power to the sensing unit 20, and is discharged when the control switch Q6 is closed to stop supplying power to the sensing unit 20. When the voltage of the second capacitor C3 is less than a set value, the first capacitor C1 is discharged.

[0048] Specifically, the hysteresis comparison circuit 81 further comprises a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a diode D2, a diode D3, a switch Q3 and a switch Q5. One end of the second capacitor C3 is connected with one end of the resistor R9, one end of the resistor R8, one end of the resistor R10 and the gate of the switch Q3, and the other end of the second capacitor C3 is grounded. The other end of the resistor R10 is connected with one end of the diode D3, the other end of the resistor R8 is connected with one end of the diode D2, the source of the switch Q3 is grounded, the drain of the switch Q3 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with one end of the resistor R6 and the gate of the switch Q5, the source of the switch Q5 is connected with the other end of the resistor R6 and is connected to VDD of the power taking switch circuit 82, and the drain of the switch Q5 is connected with the other end of the diode D2, the other end of the resistor R5 and one end of the capacitor C2.

[0049] When the switch Q6 is opened, VBB charges the second capacitor. When the voltage of the second capacitor reaches the value of the comparator VH, the switch Q5 is opened, and then the capacitor C2 is discharged to output a high level. After the switch Q6 is closed to cut off the power supply of VBB, the second capacitor C3 continuously discharges through the resistor R9. When the voltage of the second capacitor C3 drops to the value of the comparator VL, the switch Q5 is closed, and then the capacitor C2 is charged. The charging process of the capacitor C2 opens Q4 to output a pulse to trigger the switch Q2. The first capacitor C1 discharges through Q2 to repeat the next VBB power supply process. The discharging time of the second capacitor C3 is the intermittent time of the back-end power supply.

[0050] Further, the determination unit 50 is connected with the sensing unit 20 and the control unit 10 to open or close the power supply to the control unit 10 according to the level signal output by the sensing signal. The determination unit 50 is provided with a first switch circuit, a flag capacitor and a second switch circuit. The first switch circuit is connected with the sensing unit 20 and the flag capacitor to open or close the charging of the flag capacitor according to the sensing signal; and the second switch circuit is connected with the flag capacitor to open the power supply to the control unit 10 when the flag capacitor is discharged.

[0051] Specifically, referring to Figure 5The first switch circuit includes switch Q7 and resistor R17, one end of resistor R17 is connected with the sensing module, the other end is connected with the gate of switch Q7, the source of switch Q7 is connected with VBB, and the drain of switch Q7 is connected with one end of flag capacitor C6. The second switch circuit includes switch Q8, resistor R19, triode T4, etc., the gate of switch Q8 is connected with one end of flag capacitor C6, the other end of flag capacitor C6 and the source of switch Q8 are grounded, the drain of switch Q8 is connected with one end of resistor R19, the other end of resistor R19 is connected with the base of triode T4, the emitter of triode T4 is connected with the sensing module, and the collector of triode T4 is connected with control unit 10.

[0052] When the sensing module detects that the user uses the closestool, the sensing signal output low level opens switch Q7 to charge flag capacitor C6; when it detects that the user leaves, the sensing signal output high level, at this time, the storage charge of flag capacitor C6 will open switch Q8 to drive triode T4 to output high level to supply power for control unit 10.

[0053] Further, it also includes voltage stabilizing unit 70, which is connected with energy storage unit 40, determination unit 50 and control unit 10 to open or close the power supply for control unit 10 according to the level signal. Wherein, voltage stabilizing unit 70 includes voltage stabilizing chip IC1 and switch element Q12, which is connected with determination unit 50 and energy storage unit 40 to open or close the voltage stabilizing chip according to the signal output by determination unit 50.

[0054] Referring to Figure 4 Voltage stabilizing unit 70 also includes resistor R29, resistor R30, switch Q13 and capacitor C9, etc., wherein one end of resistor R29 is connected with one end of resistor R30 and the gate of switch element Q12, the other end of resistor R30 is connected with the drain of switch Q13, the source of switch Q13 and one end of capacitor C9 are grounded. The drain of switch element Q12 is connected with the other end of capacitor C9 and the input end IN of voltage stabilizing chip IC1, the source of switch element Q12 is connected with energy storage unit 40, and the gate of switch Q13 is connected with the collector of triode T4 of determination unit 50. Voltage stabilizing chip IC1 also has peripheral circuits, which are not described in detail here.

[0055] When the triode T4 of determination unit 50 outputs high level, switch element Q12 is opened, voltage stabilizing chip IC1 starts to work to supply power for control unit 10, and control unit 10 outputs a holding signal to maintain the power supply for subsequent work after the reset is completed.

[0056] In practical application, assuming that the speed of opening or closing the cover plate (0-90°) is t=1-3 seconds, the movement speed of the cover plate is n= The rotation speed of the motor 31 after the speed change of the speed change gear set 32 is n*k (rpm), and k is the speed change ratio of the speed change gear set 32. The electromotive force Ea generated by the motor 31 can be calculated according to the electromotive force constant Ce*Φ of the motor 31 as follows:

[0057] Ea=Ce*Φ*n*k

[0058] In the present application, the damping torque of the motor 31 is enlarged by the speed change gear set 32, and the resistance at the use end should be limited. Therefore, the current limiting function of the rear-end circuit should be provided to adapt to the normal use of the user.

[0059] Suppose the force arm length of the cover or the seat of the toilet is in the range of L=500-1000mm. If the resistance of the cover or the seat is limited to 10N≤F≤20N (about 1-2kg), the use of the user will not be greatly affected. The damping torque of the motor 31 should satisfy the following condition:

[0060] Te=Ct*Φ*Ia

[0061]

[0062] Wherein, Ia is the output current of the motor, and Ct*Φ is the torque constant of the motor.

[0063] Therefore, in the case of normal cover opening, the electric quantity generated by the motor in one cover opening operation is as follows:

[0064]

[0065]

[0066] According to the conventional system design, the electric quantity required by the toilet in one hour is about 2.4W, and the electric quantity generated by the motor can meet the electric quantity requirement of the user in one hour.

[0067] Based on this, the present application further provides an automatic flushing system of a toilet, which comprises a flushing valve 13 and the above-mentioned power supply device of a toilet. The control unit 10 is connected to control the operation of the flushing valve 13 through the driving unit. The determination unit 50 is provided with a flag signal. When the sensing unit 20 detects that the user uses the toilet, the flag signal is valid. The determination unit 50 further performs logical determination according to the flag signal and the sensing signal to determine whether to output a flushing signal. The control unit 10 controls the flushing valve 13 to act according to the flushing signal and clears the flag signal.

[0068] Wherein, the flag capacitor C6 in the determination unit 50 is used as the flag signal. When the flag capacitor C6 is charged, it represents that the flag signal is valid. When the flag capacitor C6 is discharged, it represents that the flag signal is cleared.

[0069] The determination unit 50 also determines whether to output the flushing signal according to the flag signal and the sensing signal, specifically, the flag signal is valid after the flag capacitor C6 is charged, and when the sensing module detects that the user leaves (for example, the user gets off), the stored charge of the flag capacitor C6 will open the switch Q8 to drive the transistor T4 to output a high level, which can be used as the flushing signal.

[0070] Referring to Figure 5 In the determination unit 50, the switch Q9 can also be provided, the gate of the switch Q9 is connected to the sensing module, the drain of the switch Q9 is connected to the flag capacitor C6, and the source of the switch Q9 is connected to the control unit 10. Then, when the control unit 10 sends a level signal for clearing the flag signal to the switch Q9, the switch Q9 is actuated to make the flag capacitor C6 discharge.

[0071] In the system, the power detection unit 80 is also provided, which is connected to the energy storage unit 40 to detect the remaining power of the energy storage unit 40, and the control unit 10 is connected to the power detection unit 80 to control different flushing actions according to the remaining power after receiving the flushing signal. Referring to Figure 4 , the power detection unit 80 includes resistors R31 and R32, one end of the resistor R31 and one end of the resistor R32 are connected and connected to the control unit 10, the other end of the resistor R31 is connected to the drain of the switch element Q12, and the other end of the resistor R32 is grounded. The control unit 10 detects the remaining power of VEE of the energy storage unit 40 through the resistors R31 and R32.

[0072] The reminding unit is also provided, and the control unit 10 is connected to the reminding unit to control the reminding unit to remind when the remaining power is insufficient to perform the flushing action. The reminding unit can be a voice reminder or an indicator light reminder, for example, if the remaining power does not meet the preset threshold, the indicator light flashes for 1 second (or uses a buzzer to remind), at this time, the user can perform a repeated flip action to power the energy storage unit 40 to complete the flushing action.

[0073] Based on this, the application also provides an automatic flushing method of the closestool, which converts the kinetic energy of the cover plate 11 into electrical energy for storage, uses the stored electrical energy to intermittently power the sensing unit 20, can generate electricity through the power generation unit, and realizes intermittent power supply through the energy-saving power supply unit 60. The level signal output by the sensing signal action opens or closes the power supply to the control unit 10 of the closestool, which can be realized through the determination unit 50. When the sensing unit 20 detects that the user uses the closestool (for example, the user sits down), the determination unit 50 sets the preset flag signal to be valid; the determination unit 50 also determines whether to output the flushing signal according to the flag signal and the sensing signal, and the control unit 10 controls the closestool to flush according to the flushing signal and clears the flag signal.

[0074] In the present application, the flag signal can be the charge and discharge state of the flag capacitor of the hardware structure as the flag signal, or a state signal set by software.

[0075] Further, the remaining electric quantity of the energy storage unit 40 is detected by the electric quantity detection unit 80, and the control unit 10 controls different flushing actions according to the remaining electric quantity after receiving the flushing signal. The calculation of the remaining electric quantity E of the energy storage unit 40 is as follows:

[0076]

[0077] C is the capacitance value of the super capacitor EC4;

[0078] U1 is the current capacitor voltage of the super capacitor;

[0079] U0 is the minimum working voltage of the system.

[0080] Specifically, different flushing actions are controlled according to the remaining electric quantity, specifically: when the remaining electric quantity E satisfies E≥E1, the toilet is controlled to perform a complete flushing action; when the remaining electric quantity E satisfies E1﹥E≥E2, the toilet is controlled to perform a simplified flushing action; when the remaining electric quantity E satisfies E<E2, no flushing action is performed; E1 and E2 are preset threshold values, and E1>E2.

[0081] The complete flushing action can include controlling the toilet to perform circle brushing→spraying→circle brushing→stopping in sequence, and the required electric quantity is E1; the simplified flushing action can include controlling the toilet to perform circle brushing→spraying and circle brushing→stopping in sequence, and the required electric quantity is E2. The complete flushing action and the simplified flushing action are not limited to this, and can be increased or decreased according to actual needs.

[0082] Due to the limited electric quantity, the flushing valve 13 of the toilet of the present application can adopt a pulse valve, and the driving unit of the flushing valve 13 adopts an H-bridge to realize bidirectional driving, and the opening / closing function of the pulse valve can be realized through positive / negative output 40ms pulse width.

[0083] The above is only a specific embodiment of the present application, but the design concept of the present application is not limited to this, and any non-essential modification of the present application using this concept shall be regarded as an act of infringing the protection scope of the present application.

Claims

1. A power supply device for a toilet, comprising a control unit and an induction unit, characterized in that: The cover is provided with a connecting shaft; the power generation unit comprises a motor, a variable speed gear set and a processing circuit, the variable speed gear set is connected between the connecting shaft and the motor to transmit the rotating speed of the connecting shaft to the motor after speed change to realize power generation, and the processing circuit is connected with the motor to rectify, limit current and limit voltage of the electric energy; and the energy storage unit is connected with the processing circuit.

2. A power supply device for a toilet according to claim 1, characterized in that: The processing circuit comprises a rectifier circuit, a constant current circuit and a voltage stabilizing circuit; the rectifier circuit input end is connected with the motor to rectify the electric energy; the constant current circuit is connected with the rectifier circuit output end to limit the current after rectification, and the voltage stabilizing circuit is connected with the constant current circuit to limit the voltage of the current output by the constant current circuit; and the energy storage unit is connected with the voltage stabilizing circuit.

3. A power supply device for a toilet according to claim 2, wherein: The energy-saving power supply unit comprises a hysteresis comparison circuit and a power taking switch circuit; the power taking switch circuit is connected with the sensing unit and the energy storage unit and is provided with a first capacitor and a control switch, the control switch is triggered to open the power supply to the sensing unit by charging the first capacitor, and the control switch is triggered to close the power supply to the sensing unit after the first capacitor is fully charged; the hysteresis comparison circuit is connected with the power taking switch circuit and is provided with a second capacitor, the second capacitor is charged when the control switch opens the power supply to the sensing unit, and is discharged when the control switch closes the power supply to the sensing unit, and the first capacitor is discharged when the voltage of the second capacitor is less than a set value.

4. A power supply device for a toilet according to claim 1, wherein: The determination unit is provided with a first switch circuit, a flag capacitor and a second switch circuit, the first switch circuit is connected with the sensing unit and the flag capacitor to open or close the charging of the flag capacitor according to the action of the sensing signal; and the second switch circuit is connected with the flag capacitor to open or close the power supply to the control unit according to the state of the flag capacitor.

5. A power supply device for a toilet according to claim 1, wherein: The voltage stabilizing unit is further connected with the energy storage unit, the determination unit and the control unit to open or close the power supply to the control unit according to the level signal.

6. A power supply device for a toilet according to claim 1, wherein: The voltage stabilizing unit comprises a voltage stabilizing chip and a switch element, the switch element is connected with the determination unit and the energy storage unit to open or close the voltage stabilizing chip according to the level signal output by the determination unit.

7. A power supply device for a toilet according to claim 6, wherein: ​ 8. An automatic flushing system for a toilet bowl comprising a flushing valve, characterized in that: The power supply device of the closestool according to any one of claims 1 to 7, wherein the determination unit is provided with a flag signal, the flag signal being valid when the inductive unit detects that a user uses the closestool; the determination unit further performs logical determination on the flag signal and the inductive signal to determine whether to output a flushing signal; and the control unit controls the flushing valve to act according to the flushing signal and clears the flag signal.

9. A system for the automatic flushing of a toilet according to claim 8, wherein: The power supply device of the closestool according to any one of claims 1 to 7, further comprising an electric quantity detection unit connected to the energy storage unit to detect the residual electric quantity of the energy storage unit, and the control unit is connected to the electric quantity detection unit to control different flushing actions according to the residual electric quantity after receiving the flushing signal.

10. A system for automatically flushing a toilet as defined in claim 9, wherein: The power supply device of the closestool according to any one of claims 1 to 7, further comprising a reminding unit connected to the control unit to remind when the residual electric quantity is insufficient to perform the flushing action.

11. A method of automatic flushing of a toilet, characterized by: The kinetic energy of the cover body is converted into electric energy for storage, and the stored electric energy is used to intermittently power the inductive unit; and the level signal output by the inductive unit is used to turn on or off the power supply to the control unit of the closestool. The inductive unit sets a preset flag signal to be valid when detecting that a user uses the closestool; the determination unit performs logical determination on the flag signal and the inductive signal to determine whether to output a flushing signal; and the control unit controls the closestool to flush according to the flushing signal and clears the flag signal.

12. A method of automatically flushing a toilet according to claim 11, wherein: The power supply device of the closestool according to any one of claims 1 to 7, further comprising an electric quantity detection unit connected to the energy storage unit to detect the residual electric quantity of the energy storage unit, and the control unit is connected to the electric quantity detection unit to control different flushing actions according to the residual electric quantity after receiving the flushing signal.

13. A method of automatic flushing of a toilet according to claim 12, wherein: The control of different flushing actions according to the residual electric quantity includes: when the residual electric quantity E satisfies E≥E1, controlling the closestool to perform a complete flushing action; when the residual electric quantity E satisfies E1﹥E≥E2, controlling the closestool to perform a simplified flushing action; and when the residual electric quantity E satisfies E<E2, not performing a flushing action; E1 and E2 are preset threshold values, and E1>E2.

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