CN212873298U - Intelligent closestool instant heating circuit - Google Patents
Intelligent closestool instant heating circuit Download PDFInfo
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- CN212873298U CN212873298U CN202021230332.6U CN202021230332U CN212873298U CN 212873298 U CN212873298 U CN 212873298U CN 202021230332 U CN202021230332 U CN 202021230332U CN 212873298 U CN212873298 U CN 212873298U
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Abstract
The utility model discloses an intelligent closestool instant heater circuit, which comprises an alternating current power supply, a zero-crossing detection circuit, a rectifier bridge, a driving tube, a heating tube, a voltage reduction circuit, a temperature probe and a singlechip; the two ends of the alternating current power supply are respectively connected with a first input end and a second input end of the rectifier bridge, the negative output end of the rectifier bridge is grounded, the positive output end of the rectifier bridge is connected with a voltage reduction circuit, the voltage reduction circuit is connected with the single chip microcomputer, the single chip microcomputer is connected with a driving tube, the driving tube is connected with a heating tube, and the heating tube is connected with the positive output end of the rectifier bridge; the voltage reduction circuit is also connected with the zero-crossing detection circuit, the signal output end of the zero-crossing detection circuit is connected with the single chip microcomputer, and the temperature probe is connected with the single chip microcomputer. Adopt the utility model discloses, have that rate of heating is fast, the higher characteristics of the temperature regulation degree of accuracy.
Description
Technical Field
The utility model relates to an intelligence bathroom equipment especially relates to an intelligent closestool instant heater circuit.
Background
With the advent of the intelligent era, intelligent toilets have been popularized, wherein the instant heater module is always the technical core. Namely, the temperature response speed and the temperature adjustment accuracy of the heater have been difficult problems. Under these backgrounds, provide an intelligent closestool instant heater circuit to it is slow to overcome rate of heating, and the difficult problem that the temperature regulation degree of accuracy is low becomes the to-be-solved technical problem of the utility model.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an intelligence closestool instant heater circuit is provided, have that rate of heating is fast, the higher characteristics of the temperature regulation degree of accuracy.
In order to solve the technical problem, the utility model provides an intelligent closestool instant heater circuit, which comprises an alternating current power supply, a zero-crossing detection circuit, a rectifier bridge, a driving tube, a heating tube, a voltage reduction circuit, a temperature probe and a singlechip; the two ends of the alternating current power supply are respectively connected with a first input end and a second input end of the rectifier bridge, the negative output end of the rectifier bridge is grounded, the positive output end of the rectifier bridge is connected with a voltage reduction circuit, the voltage reduction circuit is connected with the single chip microcomputer, the single chip microcomputer is connected with a driving tube, the driving tube is connected with a heating tube, and the heating tube is connected with the positive output end of the rectifier bridge; the voltage reduction circuit is also connected with the zero-crossing detection circuit, the signal output end of the zero-crossing detection circuit is connected with the single chip microcomputer, and the temperature probe is connected with the single chip microcomputer.
As an improvement of the scheme, the zero-crossing detection circuit comprises a first diode, a second diode, an optical coupler and a VCC power supply which are connected in sequence.
As a modification of the above-described aspect, the zero-cross detection circuit further includes a first voltage dividing resistor, the first diode being connected to the first voltage dividing resistor, and the first voltage dividing resistor being connected to the second diode.
As an improvement of the scheme, the zero-crossing detection circuit further comprises a second voltage-dividing resistor, the VCC power supply is connected with the second voltage-dividing resistor, and the second voltage-dividing resistor is connected with the optocoupler.
As an improvement of the scheme, the rectifier circuit further comprises a filter capacitor, wherein the positive electrode output end of the rectifier bridge is connected with the filter capacitor, and the filter capacitor is connected with the driving tube.
As an improvement of the scheme, the driving tube is an MOS tube, the grid electrode of the MOS tube is connected with the single chip microcomputer, the source electrode of the MOS tube is connected with the heating tube, and the drain electrode of the MOS tube is connected with the filter capacitor.
As the improvement of the scheme, the voltage reduction circuit comprises a rectifier diode, a third voltage division resistor, a fourth voltage division resistor, a voltage reduction chip and an energy storage capacitor, the positive output end of the rectifier bridge is connected with the rectifier diode, the third voltage division resistor and the fourth voltage division resistor are sequentially connected, a voltage division point between the third voltage division resistor and the fourth voltage division resistor is connected with the voltage reduction chip, the voltage reduction chip is connected with the energy storage capacitor at the VCC output end of the power supply, and the energy storage capacitor is connected with the fourth voltage division resistor.
As an improvement of the scheme, the heating tube is a ceramic electric heating tube or a metal heating tube.
Implement the utility model has the advantages that:
implement the utility model discloses intelligent closestool instant heater circuit has that rate of heating is fast, the higher characteristics of the temperature regulation degree of accuracy.
Specifically, the zero-crossing detection circuit performs zero-crossing detection on the alternating current power supply, then transmits a zero-crossing signal to the single chip microcomputer, and the single chip microcomputer controls the driving tube switch to avoid a zero-crossing point, so that power loss caused by phase difference of alternating current and voltage is avoided to a certain extent, and capacitor ripples are reduced. Then the single chip microcomputer adjusts the duty ratio of the driving tube according to the temperature condition fed back by the temperature probe, thereby realizing the power control of the heating tube. Above-mentioned accommodation process is more nimble and accurate than the number ripples mode that present heating control is commonly used, and the reason is that the minimum regulation unit of number ripples mode is a crest, and the utility model discloses the accommodation process of intelligent closestool instant heater circuit is equivalent to the proportion of switching on and closing of adjusting the crest. In addition, the rectifier bridge improves the circuit safety, converts alternating current into direct current, realizes direct current heating, does not cause human body electric shock even if the heating tube is damaged to cause short circuit between the anode and the cathode, and generates a loop between the human body and the ground to cause human body electric shock once the heating tube is broken in the alternating current heating.
Drawings
FIG. 1 is a schematic diagram of the general structure of the instant heating circuit of the intelligent toilet of the present invention;
fig. 2 is a schematic structural diagram of the zero-crossing detection circuit of the intelligent toilet instant heater circuit of the present invention.
Fig. 3 is a schematic structural diagram of the voltage reduction circuit of the intelligent toilet instant heater circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. Only this statement, the utility model discloses the upper and lower, left and right, preceding, back, inside and outside etc. position words that appear or will appear in the text only use the utility model discloses an attached drawing is the benchmark, and it is not right the utility model discloses a concrete restriction.
Fig. 1 is a schematic diagram of the general structure of the circuit of the intelligent toilet instant heater of the present invention, which includes an ac power supply 1, a zero-crossing detection circuit 2, a rectifier bridge 3, a driving tube 4, a heating tube 5, a voltage reduction circuit 6, a temperature probe 7 and a single chip 8; the two ends of an alternating current power supply 1 are respectively connected with a first input end a and a second input end b of a rectifier bridge 3, a negative output end c of the rectifier bridge 3 is grounded, a positive output end d of the rectifier bridge is connected with a voltage reduction circuit 6, the voltage reduction circuit 6 is connected with a single chip microcomputer 8, the single chip microcomputer 8 is connected with a driving tube 4, the driving tube 4 is connected with a heating tube 5, and the heating tube 5 is connected with a positive output end d of the rectifier bridge 3; the voltage reduction circuit 6 is also connected with the zero-crossing detection circuit 2, the signal output end e of the zero-crossing detection circuit 2 is connected with the single chip microcomputer 8, and the temperature probe 7 is connected with the single chip microcomputer 8.
Implement the utility model discloses intelligent closestool instant heater circuit has that rate of heating is fast, the higher characteristics of the temperature regulation degree of accuracy.
Specifically, the zero-crossing detection circuit 2 performs zero-crossing detection on the alternating current power supply 1, then transmits a zero-crossing signal to the single chip microcomputer 8, and the single chip microcomputer 8 controls the switch of the driving tube 4 to avoid a zero-crossing point, so that power loss caused by phase difference between alternating current and voltage is avoided to a certain extent, and capacitor ripples are reduced. Then the singlechip 8 adjusts the duty ratio of the driving tube 4 according to the temperature condition fed back by the temperature probe 7, thereby realizing the power control of the heating tube 5. Above-mentioned accommodation process is more nimble and accurate than the number ripples mode that present heating control is commonly used, and the reason is that the minimum regulation unit of number ripples mode is a crest, and the utility model discloses the accommodation process of intelligent closestool instant heater circuit is equivalent to the proportion of switching on and closing of adjusting the crest. In addition, the rectifier bridge 3 improves the circuit safety, converts alternating current into direct current, realizes direct current heating, does not cause human body electric shock even if the heating tube 5 is damaged to cause short circuit between the anode and the cathode, and generates a loop between the human body and the ground to cause human body electric shock once the heating tube is broken in case of alternating current heating.
It should be noted that the voltage reduction circuit 6 is respectively connected to the zero-cross detection circuit 2 and the single chip microcomputer 8, and can provide a power VCC for the zero-cross detection circuit and the single chip microcomputer.
The single chip microcomputer 8 integrates a processor, a memory and a storage, and can realize functions of local data processing, data storage and the like. The single chip 8 can be integrated on the electric control board. Preferably, the single chip microcomputer 8 can adopt a PIC16F946 type single chip microcomputer.
The temperature probe is used for detecting the temperature of the outlet water, then transmits a water temperature detection signal to the single chip microcomputer, and the single chip microcomputer accurately controls the conduction and the cut-off of the driving tube according to the zero-crossing detection signal and the water temperature detection signal, so that the heating power of the heating tube is accurately controlled.
Preferably, the temperature sensor can adopt a Jiuxi PT5M-51F temperature probe. The temperature probe 9 is connected with an AD pin of the singlechip 7 and can transmit a temperature detection signal to the singlechip 7.
The following explains the specific structure of the circuit of the intelligent toilet instant heater.
Fig. 2 is a specific circuit diagram of the zero-cross detection circuit.
The zero-crossing detection circuit 2 comprises a first diode 21, a second diode 22, an optocoupler 23 and a VCC power supply 24 which are connected in sequence.
In the figure, the e end and the f end are respectively two detection ends of the zero-crossing detection circuit, the two detection ends are respectively connected with two ends of an alternating current power supply, the g end is a signal output end of the zero-crossing detection circuit, and the signal output end is connected with the single chip microcomputer. In addition, the power of the VCC power supply 24 is supplied by the step-down line 6.
The zero-crossing detection circuit 2 further includes a first voltage-dividing resistor 25, the first diode 21 is connected to the first voltage-dividing resistor 25, and the first voltage-dividing resistor 25 is connected to the second diode 22.
The zero-crossing detection circuit 2 further comprises a second voltage-dividing resistor 26, the VCC power supply 24 is connected with the second voltage-dividing resistor 26, and the second voltage-dividing resistor 26 is connected with the optical coupler 23.
The first voltage dividing resistor and the second voltage dividing resistor have a voltage dividing function, and the zero-crossing detection circuit is prevented from being damaged due to overhigh voltage of the alternating current power supply.
The utility model discloses intelligent closestool instant heater circuit still includes filter capacitor 9, and rectifier bridge 3's anodal output d is connected with filter capacitor 9, and filter capacitor 9 is connected with drive tube 4.
The filter capacitor is used for inhibiting voltage spikes and preventing other circuit components from being damaged due to voltage abrupt change. The capacitance of the filter capacitor is 1000 muF. The capacitance can realize the filter smoothing effect of the filter capacitor.
Specifically, the driving tube is an MOS tube, a grid G of the MOS tube is connected with the single chip microcomputer 8, a source S of the MOS tube is connected with the heating tube 5, and a drain D of the MOS tube is connected with the filter capacitor 9.
The MOS Transistor is a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), which can be widely used in analog circuits and digital circuits, and has the advantages of power consumption saving, low manufacturing cost, small usable area, high integration, and the like. The MOS transistor generally has three legs, namely a gate G, a source S and a drain D, and the on/off between the drain and the source can be changed by applying a control signal between the gate and the source. Through the grid that connects the singlechip at the MOS pipe, the source electrode of MOS pipe is connected to the heating tube, and filter capacitor connects the drain electrode of MOS pipe, can realize switching on and ending through the control signal control drive tube's of singlechip source electrode and drain electrode, and then control switching on and ending of heating tube, the realization is to the accurate regulation of the heating power of heating tube.
Fig. 3 is a specific circuit diagram of the step-down line 6.
The voltage-reducing circuit 6 comprises a rectifier diode 61, a third voltage-dividing resistor 62, a fourth voltage-dividing resistor 63, a voltage-reducing chip 64 and an energy-storing capacitor 65, the positive output end d of the rectifier bridge 3 is connected with the rectifier diode 61, the third voltage-dividing resistor 62 and the fourth voltage-dividing resistor 63 are sequentially connected, a voltage-dividing point between the third voltage-dividing resistor 62 and the fourth voltage-dividing resistor 63 is connected with the voltage-reducing chip 64, the voltage-reducing chip 64 is connected with the energy-storing capacitor 65 at the output end f of the power supply VCC, and the energy-storing capacitor 65 is connected with the fourth voltage-dividing.
The power VCC output terminal f of the voltage-reducing chip 64 can output the power VCC, and the energy-storage capacitor 65 is used for storing the electric energy of the power VCC.
Preferably, the voltage reduction chip can adopt a chip of LM7805 model.
The heating tube is a ceramic electric heating tube or a metal heating tube.
The ceramic electric heating tube is formed by winding a high-quality heating wire in series by using good ceramic as a substrate, has high electric heat conversion efficiency, high temperature rise speed, small thermal inertia, high temperature resistance, corrosion resistance, good thermal chemical property stability, long service life, high insulating strength and no pollution, and can save energy by about 30 percent compared with other electric heating elements.
The metal heating pipe is composed of a metal pipe, a spiral resistance wire, crystalline magnesium oxide powder with good heat conductivity and good insulativity and the like, and can be used for heating a system.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (8)
1. An intelligent closestool instant heater circuit is characterized by comprising an alternating current power supply, a zero-crossing detection circuit, a rectifier bridge, a driving tube, a heating tube, a voltage reduction circuit, a temperature probe and a singlechip;
the two ends of the alternating current power supply are respectively connected with a first input end and a second input end of the rectifier bridge, a negative output end of the rectifier bridge is grounded, a positive output end of the rectifier bridge is connected with a voltage reduction circuit, the voltage reduction circuit is connected with the single chip microcomputer, the single chip microcomputer is connected with the driving tube, the driving tube is connected with the heating tube, and the heating tube is connected with a positive output end of the rectifier bridge;
the voltage reduction circuit is also connected with the zero-crossing detection circuit, the signal output end of the zero-crossing detection circuit is connected with the single chip microcomputer, and the temperature probe is connected with the single chip microcomputer.
2. The intelligent toilet-heater circuit according to claim 1, wherein the zero-crossing detection circuit comprises a first diode, a second diode, an opto-coupler and a VCC power supply connected in sequence.
3. The intelligent toilet-heater circuit as claimed in claim 2, wherein the zero-crossing detection circuit further comprises a first voltage-dividing resistor, the first diode being connected to the first voltage-dividing resistor, the first voltage-dividing resistor being connected to the second diode.
4. The intelligent toilet-heater circuit according to claim 2, wherein the zero-crossing detection circuit further comprises a second voltage-dividing resistor, the VCC power supply being connected to the second voltage-dividing resistor, the second voltage-dividing resistor being connected to the optocoupler.
5. The intelligent toilet-heater circuit according to claim 1, further comprising a filter capacitor, wherein the positive output terminal of the rectifier bridge is connected to the filter capacitor, and the filter capacitor is connected to the driving tube.
6. The intelligent toilet instant heater circuit according to claim 5, wherein the driving tube is an MOS tube, a gate of the MOS tube is connected with the single chip, a source of the MOS tube is connected with the heating tube, and a drain of the MOS tube is connected with the filter capacitor.
7. The intelligent toilet bowl instant heater circuit according to claim 1, wherein the voltage-reducing circuit comprises a rectifier diode, a third voltage-dividing resistor, a fourth voltage-dividing resistor, a voltage-reducing chip and an energy-storing capacitor, the positive output end of the rectifier bridge is connected with the rectifier diode, the third voltage-dividing resistor and the fourth voltage-dividing resistor are sequentially connected, a voltage-dividing point between the third voltage-dividing resistor and the fourth voltage-dividing resistor is connected with the voltage-reducing chip, the voltage-reducing chip is connected with a power supply VCC output end and the energy-storing capacitor, and the energy-storing capacitor is connected with the fourth voltage-dividing resistor.
8. The intelligent toilet-heater circuit according to claim 1, wherein the heating tube is a ceramic electric heating tube or a metal heating tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021230332.6U CN212873298U (en) | 2020-06-29 | 2020-06-29 | Intelligent closestool instant heating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021230332.6U CN212873298U (en) | 2020-06-29 | 2020-06-29 | Intelligent closestool instant heating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212873298U true CN212873298U (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021230332.6U Active CN212873298U (en) | 2020-06-29 | 2020-06-29 | Intelligent closestool instant heating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212873298U (en) |
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2020
- 2020-06-29 CN CN202021230332.6U patent/CN212873298U/en active Active
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