CN110793210A - Intelligent control method and system for power supply circuit of electric water heater - Google Patents
Intelligent control method and system for power supply circuit of electric water heater Download PDFInfo
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- CN110793210A CN110793210A CN201910960508.9A CN201910960508A CN110793210A CN 110793210 A CN110793210 A CN 110793210A CN 201910960508 A CN201910960508 A CN 201910960508A CN 110793210 A CN110793210 A CN 110793210A
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- water heater
- electric water
- power supply
- supply circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention relates to an intelligent control method and system for a power supply circuit of an electric water heater, wherein the method comprises the steps of providing a control unit, a signal acquisition unit and a relay unit, wherein an output loop of the relay unit is connected between a mains supply input end and a power supply input end of the electric water heater in series, and the control unit controls an input loop of the relay unit according to an acquisition signal of the signal acquisition unit. The invention can realize the function of switching on and off the electric water heater in a non-contact way, and can also switch on and off the electric water heater by operating the direct-current key without worrying about the electric shock caused by hand wetting and the problem of high-voltage electric shock.
Description
Technical Field
The invention relates to the technical field of power supply of electric water heaters, in particular to an intelligent control method and system for a power supply circuit of an electric water heater.
Background
The safety protection coefficient of power supply systems of a plurality of rented rooms is very low, particularly, power supply systems of bathrooms are killed by electric leakage and electricity of electric water heaters because the electric water heaters forget to cut off power supply circuits during bathing in winter, and the phenomenon occurs every year.
The bathroom power supply system can forget to cut off the power supply because of the electricity utilization habits of users, so that the danger coefficient is increased, for example: when the hands are wet, the AC power supply is switched on or off, so that the risk of electric shock exists.
The above prior art solutions have the following drawbacks: in the bathing process, when the electric water heater generates electric leakage, the electric shock risk exists; or people think suddenly that not cut off the power or do not unplug the plug in the process of bathing, go to cut off AC power, also there is the risk of being electrocuted.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an intelligent control method and system for a power supply circuit of an electric water heater.
The above object of the present invention is achieved by the following technical solutions:
an intelligent control method for a power supply circuit of an electric water heater comprises the steps of providing a control unit, a signal acquisition unit and a relay unit, wherein an output loop of the relay unit is connected between a commercial power input end and a power input end of the electric water heater in series, and the control unit controls an input loop of the relay unit according to an acquisition signal of the signal acquisition unit.
By adopting the technical scheme, the function of the non-contact on-off electric water heater can be realized.
The invention is further configured to: the signal acquisition unit comprises an infrared pair tube unit or a key unit.
By adopting the technical scheme, the infrared geminate transistor control is provided to realize the function of switching on and off the electric water heater in a non-contact way, or the function of switching on and off the electric water heater is realized by the control of a direct current type key (low voltage 5V), so that the electric shock caused by hand wetting is avoided, and the problem of high voltage electric shock is avoided.
The second aim of the invention is realized by the following technical scheme:
an intelligent control system for a power supply circuit of an electric water heater comprises a control unit, a signal acquisition unit and a relay unit, wherein an output loop of the relay unit is connected in series between a mains supply input end and a power supply input end of the electric water heater, and the control unit controls an input loop of the relay unit according to an acquisition signal of the signal acquisition unit.
By adopting the technical scheme, the function of the non-contact on-off electric water heater can be realized.
The invention is further configured to: the system also comprises a power supply unit used for supplying power to the system.
By adopting the technical scheme, the power supply unit is provided for supplying power to the control unit, the signal acquisition unit, the relay unit and the like of the system.
The invention is further configured to: the relay unit comprises a relay K1 and a switch tube Q1, an input loop of the relay K1 and the switch tube Q1 are connected in series at two ends of the power supply unit, and a control end of the switch tube Q1 is connected to a relay control end of the control unit.
By adopting the technical scheme, the input loop of the relay K1 is controlled by switching on and off the switch tube Q1, so that the switching on and off of the output loop of the relay K1 are controlled, and the non-contact control on the switching on and off of the electric water heater is realized.
The invention is further configured to: the signal acquisition unit comprises an infrared pair tube unit or a key unit.
By adopting the technical scheme, the infrared geminate transistor control is provided to realize the function of switching on and off the electric water heater in a non-contact way, or the function of switching on and off the electric water heater is realized by the control of a direct current type key (low voltage 5V), so that the electric shock caused by hand wetting is avoided, and the problem of high voltage electric shock is avoided.
The invention is further configured to: the infrared pair of transistor unit includes infrared pair of transistor Q2, switch tube Q3 and switch tube Q4, the control unit passes through infrared control end control the break-make of switch tube Q3, thereby control the operating condition of infrared pair of transistor Q2 transmitting terminal, and will show infrared feedback information that infrared pair of transistor Q2 receiving terminal operating condition passes through switch tube Q4 feeds back to the infrared feedback end of control unit.
By adopting the technical scheme, the infrared control end of the control unit is used for determining whether the infrared geminate transistor unit is started, and when the infrared geminate transistor unit is started, the infrared feedback end of the control unit is used for receiving control information detected by the infrared geminate transistor unit, so that the function of switching on and off the electric water heater in a non-contact manner is realized, the electric shock risk under the alternating-current high voltage (220V) is avoided, and the safety coefficient is high.
The invention is further configured to: the key unit comprises a button S1 and a resistor R11, the button S1 and the resistor R11 are connected in series at two ends of the power supply unit, and a connection point between the button S1 and the resistor R11 is connected to a key detection end of the control unit.
By adopting the technical scheme, the button S1 is a light touch switch, the control unit detects a high level in a normal state, and when the button S1 is pressed, the control unit is a low level, so that the on-off of the electric water heater is controlled under the direct-current low voltage (5V), and the electric shock risk is avoided under the alternating-current high voltage (220V).
The invention is further configured to: the temperature and humidity detection device further comprises a temperature and humidity unit which is connected with the control unit and used for detecting the temperature and the humidity of the current environment.
By adopting the technical scheme, the temperature and humidity unit is added and used for detecting the temperature and humidity conditions in the bathroom so as to judge whether a person uses the bathroom or not, and if the person uses the bathroom, the electric water heater is actively turned off, so that the electric shock risk is reduced.
The invention is further configured to: the ventilator unit is connected with the control unit.
Through adopting above-mentioned technical scheme, add the scavenger fan unit for with the vapor and the heat discharge of bathroom outdoor, when judging that someone uses in the bathroom, take a breath initiatively, guarantee that the air quality in the bathroom is more comfortable.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the function of non-contact on-off of the electric water heater can be realized;
2. the electric water heater can be switched on and off by operating a direct current type key (low voltage 5V), so that people do not need to worry about electric shock caused by hand wetting, and the problem of high voltage electric shock is avoided;
3. in the bathing process, the temperature and humidity sensor is used for detecting the moisture and the temperature of the bathroom to judge whether the bathroom is used or not, if so, the power supply of the electric water heater is automatically cut off, and the fan is automatically turned on; and multiple protection measures are adopted, so that the safety coefficient is improved.
Drawings
FIG. 1 is a schematic block diagram of the system of the present invention;
FIG. 2 is a schematic diagram of the power supply unit of the present invention;
FIG. 3 is a schematic diagram of a relay unit of the present invention;
FIG. 4 is a schematic diagram of an infrared pair of tube units of the present invention;
FIG. 5 is a schematic diagram of the key unit and control unit of the present invention;
FIG. 6 is a schematic diagram of the temperature and humidity unit of the present invention;
fig. 7 is a schematic diagram of the ventilator unit of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention discloses an intelligent control method for a power supply circuit of an electric water heater, which provides a control unit, a signal acquisition unit and a relay unit, wherein an output loop of the relay unit is connected in series between a commercial power input end and a power supply input end of the electric water heater, and the control unit controls the input loop of the relay unit according to an acquisition signal of the signal acquisition unit. The function of non-contact on-off electric water heater can be realized.
Preferably, the signal acquisition unit comprises an infrared pair tube unit or a key unit. The infrared geminate transistor control is provided to realize the function of switching on and off the electric water heater in a non-contact way or the function of switching on and off the electric water heater by direct current key (low voltage 5V) control, so that people do not need to worry about electric shock caused by hand wetting and the problem of high voltage electric shock is avoided.
Referring to fig. 1, the intelligent control system for the power supply circuit of the electric water heater disclosed by the invention comprises a control unit, a signal acquisition unit and a relay unit, wherein an output loop of the relay unit is connected in series between a mains supply input end and a power supply input end of the electric water heater, and the control unit controls an input loop of the relay unit according to an acquisition signal of the signal acquisition unit.
Referring to fig. 2, a power supply unit is further included for supplying 5V and 12V dc power to the system.
Referring to fig. 3, the relay unit includes a relay K1 and a switching tube Q1, an output circuit of the relay unit is connected in series between a mains input terminal (N terminal and L terminal) and a power input terminal (J1, J2, J3) of an electric water heater, an input circuit of the relay K1 and the switching tube Q1 are connected in series at both ends of the power supply unit, and a control terminal of the switching tube Q1 is connected to a relay control terminal (OUT _ EN) of the control unit. Preferably, a diode D1 and a resistor R24 are respectively connected in parallel to the input circuit of the relay K1, and are used for stabilizing voltage so that the relay K1 operates more stably.
When the relay control end (OUT _ EN) of the control unit outputs high level, the switch tube Q1 is an NPN tube, and is conducted at the moment, current flows through an input loop of the relay K1, a magnetic field is generated to attract an output loop (normally open switch) of the relay K1, and joints (J1, J2 and J3) of the electric water heater obtain power, so that the non-contact control of the on-off of the electric water heater is realized.
Preferably, the signal acquisition unit comprises an infrared pair tube unit or a key unit. The infrared geminate transistor control is provided to realize the function of switching on and off the electric water heater in a non-contact way or the function of switching on and off the electric water heater by direct current key (low voltage 5V) control, so that people do not need to worry about electric shock caused by hand wetting and the problem of high voltage electric shock is avoided. The infrared pair of transistor units or button units can be locked (break the electric water heater) and unlocked (put through the electric water heater) and the buttons of two different modes can be selected by the customer at will, so that the safety factor is high and the experience of the customer is strong.
Referring to fig. 4, the infrared pair transistor unit includes an infrared pair transistor Q2, a switch transistor Q3 and a switch transistor Q4, and the control unit controls on/off of the switch transistor Q3 through an infrared control terminal (FS), so as to control a working state of an emitting terminal (LEDIR) of the infrared pair transistor Q2, and feed back infrared feedback information representing a working state of an receiving terminal (IR receiver) of the infrared pair transistor Q2 to an infrared feedback terminal (RV) of the control unit through the switch transistor Q4.
When an infrared control end (FS) signal given by the control unit is at a high level, the switching tube Q3 is an NPN tube, and at this time, the switching tube is turned on, a current flows through an L emission end of the infrared pair tube Q2, and an emission tube through which the current flows emits infrared light to the outside; if an obstacle (such as a human hand) appears above the transmitting tube, the IR receiving end in the infrared pair tube Q2 receives infrared light, current flows through the switch tube R3 to form voltage drop, the capacitor C6 is a coupling capacitor, through the 'direct-alternating' characteristic of the capacitor C6, the voltage drop generated on the resistor R3 passes through the capacitor C6 and is loaded on the base electrode of the switch tube Q4, the switch tube Q4 is an NPN tube and is conducted at the moment, and the control unit detects that the signal of the infrared feedback end (RV) is changed from high level to low level at the moment; if the infrared receiving tube receives the infrared light after detecting the low level, it is determined that someone waves the hand in front of the infrared pair tube Q2, in this embodiment, it is determined that the wave of the hand in front of the infrared pair tube Q2 is effective twice; that is, the control unit detects that RV has 2 low levels, then think that someone waves the hand, and switch on the commercial power input end and the power of electric water heater this moment, let electric water heater power supply work, if only detect once waving the hand, then disconnect commercial power input end and the power of electric water heater, lock electric water heater. The parameters of resistance and capacitance in the infrared pair tube unit can be changed, and the induction range and sensitivity can be changed.
Referring to fig. 5, the key unit includes a button S1 and a resistor R11, the button S1 and the resistor R11 are connected in series across the power supply unit (the voltage of the power supply unit is 5V in this embodiment), and a connection point between the button S1 and the resistor R11 is connected to a key detection terminal of the control unit.
The button S1 is a light touch switch, the control unit detects a high level in a normal state, and when the button is pressed, the control unit is a low level, so that the electric water heater is controlled to be switched on and off under direct current low voltage (5V), and the electric shock risk is avoided under alternating current high voltage (220V).
The control unit U2 can adopt a 12-bit 8-pin Flash single chip microcomputer as a processing chip, in the embodiment, the button S1 is a light touch switch, and the user can enter an unlocking function by short pressing in 1S to connect the commercial power input end with the electric water heater; and 2S long pressing is carried out, the locking function is achieved, and the connection between the mains supply input end and the electric water heater is cut off.
Referring to fig. 6, the electronic device further includes a temperature and humidity unit DHT11, and a DATA output end (DATA) of the temperature and humidity unit DHT11 is connected to a temperature and humidity DATA end of the control unit, and is configured to detect a temperature and a humidity of a current environment.
The temperature and humidity unit is added and used for detecting the temperature and humidity conditions in the bathroom so as to judge whether a person is in use in the bathroom or not, and if the person is judged to be in use, the electric water heater is actively turned off, so that the electric shock risk is reduced.
Referring to fig. 7, the air exhaust FAN control system further includes an air exhaust FAN unit connected to an air exhaust FAN control terminal (FAN) of the control unit. The ventilating fan unit is added and used for discharging water vapor and heat in the bathroom to the outside, and when people use the bathroom, the air is actively ventilated, so that the air quality in the bathroom is more comfortable.
When the FAN control end (FAN) signal is at high level, the LED1 indicator lights up, the switch Q5 turns on, and the FAN1 starts to operate. The FAN signal may be a PWM signal, the LED1 indicator is also visually bright, the switch Q5 is turned off, and in this case, the FAN1 speed is slower than the FAN signal is continuously high, that is, the FAN speed can be changed by PWM, or the FAN speed can be controlled by PWM duty ratio. The diode D2 can release the back electromotive force of the motor in the FAN1 at the moment when the switching tube Q5 is turned off, and the capacitor C8 can stabilize the voltage across the FAN without sudden change.
When the information of the temperature and humidity reading unit DTH11 exceeds a first preset value, the control end (FAN) of the ventilator outputs a continuous high level to start a FAN in a bathroom to discharge moisture and reduce the temperature, and when the temperature is lower than the first preset value but higher than a second preset value, the control end (FAN) of the ventilator outputs a PWM signal to reduce the rotating speed of the FAN; wherein the first preset value is higher than the second preset value.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. An intelligent control method for a power supply circuit of an electric water heater is characterized by comprising the following steps: and the control unit controls the input loop of the relay unit according to the collected signal of the signal collection unit.
2. The intelligent control method for the power supply circuit of the electric water heater according to claim 1, characterized in that: the signal acquisition unit comprises an infrared pair tube unit or a key unit.
3. The utility model provides an electric water heater supply circuit intelligence control system which characterized in that: the control unit controls the input loop of the relay unit according to the acquisition signal of the signal acquisition unit.
4. The intelligent control system of the power supply circuit of the electric water heater as claimed in claim 3, wherein: the system also comprises a power supply unit used for supplying power to the system.
5. The intelligent control system of the power supply circuit of the electric water heater according to claim 4, characterized in that: the relay unit comprises a relay K1 and a switch tube Q1, an input loop of the relay K1 and the switch tube Q1 are connected in series at two ends of the power supply unit, and a control end of the switch tube Q1 is connected to a relay control end of the control unit.
6. The intelligent control system of the power supply circuit of the electric water heater according to claim 4, characterized in that: the signal acquisition unit comprises an infrared pair tube unit or a key unit.
7. The intelligent control system of the power supply circuit of the electric water heater according to claim 6, characterized in that: the infrared pair of transistor unit includes infrared pair of transistor Q2, switch tube Q3 and switch tube Q4, the control unit passes through infrared control end control the break-make of switch tube Q3, thereby control the operating condition of infrared pair of transistor Q2 transmitting terminal, and will show infrared feedback information that infrared pair of transistor Q2 receiving terminal operating condition passes through switch tube Q4 feeds back to the infrared feedback end of control unit.
8. The intelligent control system of the power supply circuit of the electric water heater according to claim 6, characterized in that: the key unit comprises a button S1 and a resistor R11, the button S1 and the resistor R11 are connected in series at two ends of the power supply unit, and a connection point between the button S1 and the resistor R11 is connected to a key detection end of the control unit.
9. The intelligent control system of the power supply circuit of the electric water heater as claimed in claim 3, wherein: the temperature and humidity detection device further comprises a temperature and humidity unit which is connected with the control unit and used for detecting the temperature and the humidity of the current environment.
10. The intelligent control system of the power supply circuit of the electric water heater as claimed in claim 3, wherein: the ventilator unit is connected with the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910960508.9A CN110793210A (en) | 2019-10-10 | 2019-10-10 | Intelligent control method and system for power supply circuit of electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910960508.9A CN110793210A (en) | 2019-10-10 | 2019-10-10 | Intelligent control method and system for power supply circuit of electric water heater |
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| Publication Number | Publication Date |
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| CN110793210A true CN110793210A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910960508.9A Pending CN110793210A (en) | 2019-10-10 | 2019-10-10 | Intelligent control method and system for power supply circuit of electric water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637524A (en) * | 2020-06-11 | 2020-09-08 | 美智光电科技有限公司 | Heating ventilation equipment, control method, control device and readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2330939Y (en) * | 1998-06-09 | 1999-07-28 | 唐国伟 | Electric water heater automatic safety-control device |
| CN2420579Y (en) * | 2000-05-22 | 2001-02-21 | 申忠玉 | Human safety protector for water heater |
| BR0203922A (en) * | 2002-09-17 | 2004-05-25 | Jose Carlos Cella | Improvements made to recirculating and heating water system with microprocessed electronic control circuit for hot tubs |
| CN206863615U (en) * | 2017-06-26 | 2018-01-09 | 厦门亨立德电子有限公司 | Bathroom temperature and humidity control system |
| CN211372779U (en) * | 2019-10-10 | 2020-08-28 | 深圳市全智芯科技有限公司 | Intelligent control system for power supply circuit of electric water heater |
-
2019
- 2019-10-10 CN CN201910960508.9A patent/CN110793210A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2330939Y (en) * | 1998-06-09 | 1999-07-28 | 唐国伟 | Electric water heater automatic safety-control device |
| CN2420579Y (en) * | 2000-05-22 | 2001-02-21 | 申忠玉 | Human safety protector for water heater |
| BR0203922A (en) * | 2002-09-17 | 2004-05-25 | Jose Carlos Cella | Improvements made to recirculating and heating water system with microprocessed electronic control circuit for hot tubs |
| CN206863615U (en) * | 2017-06-26 | 2018-01-09 | 厦门亨立德电子有限公司 | Bathroom temperature and humidity control system |
| CN211372779U (en) * | 2019-10-10 | 2020-08-28 | 深圳市全智芯科技有限公司 | Intelligent control system for power supply circuit of electric water heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637524A (en) * | 2020-06-11 | 2020-09-08 | 美智光电科技有限公司 | Heating ventilation equipment, control method, control device and readable storage medium |
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