CN105065769B - The temperature control system of water tap heating - Google Patents
The temperature control system of water tap heating Download PDFInfo
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- CN105065769B CN105065769B CN201510459599.XA CN201510459599A CN105065769B CN 105065769 B CN105065769 B CN 105065769B CN 201510459599 A CN201510459599 A CN 201510459599A CN 105065769 B CN105065769 B CN 105065769B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/002—Electric heating means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a kind of temperature control system of water tap heating, including 220V AC powers, AC/DC converting units, signal acquisition and processing unit, reference source signal comparison circuit, control unit and heater, AC/DC converting units are nonlinear switching power mode, and AC/DC converting units give reference source signal comparison circuit respectively, signal acquisition and processing unit and control unit provide DC voltage, signal acquisition and processing unit include the collection to temperature and the processing to gathering signal, obtained signal in signal acquisition and processing unit is transferred to after control unit by reference source signal comparison circuit controls heater to carry out intelligent heating, the system improves galvanic current pressure by the way of non-linear power, and by the way that the collection of temperature to be carried out being compared to control with a reference source voltage to the work of heater, so that control structure is simple, use safety, operating efficiency is high, really realize intelligentized level.
Description
Technical field
The present invention relates to a kind of control system of intelligent heating, the particularly temperature control system of water tap heating.
Background technology
Hot water is usually needed to use in the life of people, hot water needs to then flow into tap just from water heater through piping
It can use, and the volume ratio of water heater is huger, it is necessary to installing space, therefore be unfavorable for installing on a large scale laying, with section
The continuous progress of skill, Instant heating type tap has been put into the life of people, and control system is passed through in this Instant heating type tap
Control heater is heated to water temperature, and the heater is a kind of load of high current, and 20A or so can be reached when it works
Electric current, and the mode of heating of existing tap is all premised on heating heating with full power, to pass through valve in the market
Change the size of current to carry out the temperature control of water outlet, but when the flow that valve fixes water outlet is constant, during with work
Between increase, will cause the continuous rise of leaving water temperature, influence the use of user, so not only power consumption may make water outlet
Temperature is too high and scalds, it is also possible to trigger the serious consequences such as fire because unrestricted heating burns out product, therefore each in recent years
The research of major company and research institution to Intelligent heating controller is in the ascendant, for example：Patent No. 201110179671.5, specially
The entitled Intelligent fast-heating faucet of profit, described circuit control device mainly includes：CPU control circuit, leakage protection circuit,
Temperature display circuit, power-switching circuit, temperature collection circuit, overtemperature alarm circuit, keyboard control circuit and thermostatic control electricity
Road etc., the program controls the advantage of the method for heating tube to be using changing power：It can be controlled according to the temperature of setting
Water temperature, reduces the dash current of heating tube, can extend heating tube service life, so as to improve the use longevity of circuit control system
Life, but this control circuit is controlled using CPU, circuit components are more, and cost is higher, and circuit module is more, while power supply turns
Circuit is changed using simple translative mode so that overall structure must be protected using the protection circuit of periphery in use
Shield, design structure is complicated, it is therefore desirable to improve.
The content of the invention
The invention aims to solve above-mentioned the deficiencies in the prior art and provide a kind of control structure it is simple, using peace
Entirely, the temperature control system for the water tap heating that service efficiency is high, cost is low.
To achieve these goals, the temperature control system of the water tap heating designed by the present invention, the system includes
220V AC powers, AC/DC converting units, signal acquisition and processing unit, reference source signal comparison circuit, control unit and add
Hot device, described AC/DC converting units are nonlinear switching power mode, and the output end point of described AC/DC converting units
It is not connected with reference source signal comparison circuit, signal acquisition and processing unit and control unit, described AC/DC converting units are
220V exchanges are converted to after dc source and provide supply voltage for whole circuit system；Described signal acquisition and processing unit
Processing including the collection to temperature and to collection signal, the signal acquisition and processing unit and reference source signal comparison circuit
Input connection, the input of the output end of the reference source signal comparison circuit and control unit connects, control unit
Output end is connected with heater.
The system improves galvanic current pressure by the way of non-linear power, and by by the collection of temperature and benchmark
Source voltage is compared to control the work of heater, so that control structure is simple, use safety, operating efficiency height, cost
It is low, really realize intelligentized level.
As preferred：Described AC/DC converting units by 220V AC powers by rectification, filtering, non-linear transformation with
And DC power supply voltage is obtained after switch voltage-stabilizing protection processing, it mainly includes piezoresistor ZR1, capacitor C1, whole
Flow bridge IC1, capacitor C2, Transient Suppression Diode VD1, commutation diode VD2, filter condenser C3, three end off-line type pulsewidths
Modulation power switch TOP221, transformer TA1, commutation diode VD3, commutation diode VD4 and LC- π type filter circuits；Its it
Between circuit connecting relation be：Connection 220V AC powers in one end after pressure-sensitive electric variable rheostat ZR1 and capacitor C1 are in parallel
Live wire, the other end connects the ground wire of 220V AC powers, and rectifier bridge IC1 1 pin connects the live wire of 220V AC powers, rectifier bridge
IC1 3 pin connect the ground wire of 220V AC powers, and the 2 of rectifier bridge IC1 is connected to after capacitor C2 is in parallel with filter condenser C3
Between pin and 4 pin, and filter condenser C3 positive pole is connected with rectifier bridge IC1 4 pin, Transient Suppression Diode VD1 and rectification
After diode VD2 positive pole is connected with each other, and Transient Suppression Diode VD1 negative pole is connected with rectifier bridge IC1 4 pin and with
One end connection of transformer TA1 armature winding, commutation diode VD2 negative pole and three end off-line type pulse width modulation powers are switched
TOP221 drain electrode end D connections, and three end off-line type pulse width modulation powers switch TOP221 drain electrode end D also with transformer TA1
Armature winding other end connection, three end off-line type pulse width modulation powers switch TOP221 control end C connections and rectifier bridge
Resistor R1 and filter condenser C4 are in series between IC1 2 pin, and three end off-line type pulse width modulation powers switch TOP221's
The line negative pole end that enters of control end C and transformer TA1 secondary windings is connected with voltage-regulator diode device VD5, the described pole of rectification two
Pipe VD3 positive pole is connected with the outlet positive terminal of transformer TA1 secondary windings, commutation diode VD3 negative pole and rectification two
Pole pipe VD4 positive poles are connected, and commutation diode VD4 positive poles are connected with 1 end VI of LC- π type filter circuits, commutation diode VD4
Negative pole is connected with the line negative pole end that enters of transformer TA1 secondary windings.
By rectifier bridge IC1 by after the signal rectification of AC power, becoming 12V DC voltage by TA1, while
Voltage stabilizing function is added between the input and output of transformer, there is provided use so as to effectively serve the effect of protection
Security.
Described signal acquisition and processing unit include temperature sensor J5 and rheostat R2, the annexation between it
For：The temperature sensor J5 of temperature positive pole connection exports dc source VCC during collecting work, and negative pole is connected with rheostat R2
After be grounded.
Described reference source signal comparison circuit mainly includes operational amplifier LM358, capacitor C8, resistor R3 and steady
Diode VD6 is pressed, the annexation between it is：Resistor R3 one end is connected with 2 pin VO of LC- π type filter circuits, resistor
The R3 other ends are connected with voltage-regulator diode device VD6 negative pole, and voltage-regulator diode device VD6 negative pole and and operational amplifier
The LM358 pin of positive input 3 connection, voltage-regulator diode device VD6 positive pole connection rectifier bridge IC1 2 pin, operational amplifier
The LM358 pin of reverse input end 2 is connected with temperature sensor J5 negative pole, operational amplifier the LM358 pin of output end 1 and control
Unit is connected；The signal after sample temperature turns is realized by reference source signal comparison circuit to be compared to a reference source voltage
Amplify sampled signal output voltage signal, so as to realize the control to control unit.
Described control unit includes resistor R4, triode Q1, voltage-regulator diode device VD7, capacitor C9 and relay
IC4, the annexation between it is：The resistor R4 one end concatenation operation amplifiers LM358 pin of output end 1, the other end and three
Pole pipe Q1 base stage connection, after voltage-regulator diode device VD7 is in parallel with capacitor C9, voltage-regulator diode device VD7 positive pole and three poles
The colelctor electrode connection of pipe, the negative pole of voltage-stablizer is connected with 2 pin VO of LC- π type filter circuits, two lines of the relay IC4
Circle pin is connected between 2 pin VO of the colelctor electrode of triode and LC- π type filter circuits, and relay IC4 common port is connected to
On the live wire of 220V AC powers, relay IC4 normally opened end connection and unit heater；
Control unit is that the signal for exporting operational amplifier controls the state of triode, when the output of operational amplifier is small
When equal to output DC voltage VCC, triode Q1 conductings so that relay IC4 obtains electric, normal-closed end disconnects, normally opened end adhesive,
So that the heater heating at normally opened end is connected to, when the output of operational amplifier is more than or equal to output DC voltage VCC,
Triode Q1 ends so that relay IC4 dead electricity, and normally opened end disconnects, normal-closed end adhesive, so that being connected to adding for normally opened end
Hot device dead electricity, stops heating, so as to effectively provide the security used, will not go straight up to because of heating always water temperature one
Temperature, will not scald human body during use.
As preferred：Red LED lamp is connected between described relay IC4 normally opened end and ground, relay IC4's is normal
Green LED lamp is connected between closed end and ground；Cause effectively to find out in use by the design of preferred scheme
Which type of working condition is the system be in.
The temperature control system for the water tap heating that the present invention is obtained, the system is improved surely by the way of non-linear power
Fixed DC voltage, and by the way that the collection of temperature to be carried out being compared to control with a reference source voltage to the work of heater, from
And make control structure simple, high using safety, operating efficiency, really realize intelligentized level.
Brief description of the drawings
Fig. 1 is the overall structure principle of the present embodiment；
Fig. 2 is the theory diagram of AC/DC converting units in the present embodiment；
Fig. 3 is the theory diagram of temperature sampling and signal processing unit in the present embodiment；
Fig. 4 is the theory diagram of reference source signal comparison circuit in the present embodiment；
Fig. 5 is the theory diagram of control unit in the present embodiment；
Fig. 6 is integrated circuit schematic diagram in the present embodiment.
In figure：AC/DC converting units 1, signal acquisition and processing unit 2, reference source signal comparison circuit 3, control unit
4th, heater 5, LC- π types filter circuit 6,220V AC powers 7.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment：
As shown in figure 1, the temperature control system for the water tap heating that the present invention is provided, the system includes 220V AC powers
7th, AC/DC converting units 1, signal acquisition and processing unit 2, reference source signal comparison circuit 3, control unit 4 and heater 5,
Described AC/DC converting units 1 are nonlinear switching power mode, and described AC/DC converting units 1 output end respectively with
Reference source signal comparison circuit 3, signal acquisition and processing unit 2 and control unit 4 are connected, and described signal acquisition and processing is single
Member 2 includes the collection to temperature and the processing to gathering signal, and the signal acquisition and processing unit 2 are compared with reference source signal
The input connection of circuit 3, the output end of the reference source signal comparison circuit 3 is connected with the input of control unit 4, controlled
The output end of unit 4 is connected with heater 5.
As shown in Fig. 2 described AC/DC converting units 1 are by 220V AC powers 7 are by rectification, filtering, transformation and open
DC voltage is obtained after closing voltage-stabilizing protection processing, it mainly includes piezoresistor ZR1, capacitor C1, rectifier bridge IC1, electric capacity
Device C2, Transient Suppression Diode VD1, commutation diode VD2, filter condenser C3, three end off-line type pulse width modulation power switches
TOP221, transformer TA1, commutation diode VD3, commutation diode VD4 and LC- π types filter circuit 6；Circuit between it connects
The relation of connecing is：The live wire of one end connection 220V AC powers 7, other end connection after piezoresistor ZR1 and capacitor C1 is in parallel
The ground wire of 220V AC powers 7, the live wire of rectifier bridge IC1 1 pin connection 220V AC powers 7, rectifier bridge IC1 3 pin connection
The zero line of 220V AC powers 7, be connected to after capacitor C2 is in parallel with filter condenser C3 rectifier bridge IC1 2 pin and 4 pin it
Between, and filter condenser C3 positive pole is connected with rectifier bridge IC1 4 pin, Transient Suppression Diode VD1 and commutation diode VD2
Positive pole be connected with each other, and after Transient Suppression Diode VD1 negative pole is connected with rectifier bridge IC1 4 pin and with transformer TA1
Armature winding one end connection, commutation diode VD2 negative pole and three end off-line type pulse width modulation power power switch
TOP221 drain electrode end D connections, and three end off-line type pulse width modulation powers switch TOP221 drain electrode end D also with transformer TA1
Armature winding other end connection, three end off-line type pulse width modulation powers switch TOP221 control end C connections and rectifier bridge
Resistor R1 and filter condenser C4 are in series between IC1 2 pin, and three end off-line type pulse width modulation powers switch TOP221's
The line negative pole end that enters of control end C and transformer TA1 secondary windings is connected with voltage-regulator diode VD5, described commutation diode
VD3 positive pole is connected with the leading-out terminal of transformer TA1 secondary windings, commutation diode VD3 negative pole and commutation diode VD4
Positive pole is connected, and commutation diode VD4 positive poles are connected with 1 end VI of LC- π types filter circuit 6, commutation diode VD4 negative poles and
The negative pole end connection of transformer TA1 secondary windings, rectifier bridge IC1 2 pin ground connection, three end off-line type pulse width modulation power switches
TOP221 source terminal S ground connection.
The operation principle of described its circuit of AC/DC converting units 1 is：Input AC 220V power supplys pass through piezoresistor
ZR1, capacitor C1 are depressured, after rectifier bridge IC1 rectifications, enter the filtering of C3 rows by filter capacitor, and become by transformer TA1
Pressure, then be filtered by commutation diode VD3, commutation diode VD4 rectifications and LC- π types filter circuit 6, it is whole system
System provides stable 12V DC voltages, wherein adding three end off-line type pulsewidth modulation work(between the input/output terminal of transformer
Rate switchs TOP221 and the drive circuit of the component, realizes the pressure stabilization function of output 12V DC voltages.
As shown in figure 3, described signal acquisition and processing unit 2 include temperature sensor J5 and potentiometer R2, between it
Annexation be：The temperature sensor J5 of temperature positive pole connection output DC voltage VCC during collecting work, and negative pole and electricity
It is grounded after the device R2 series connection of position.
Described signal acquisition and the operation principle of processing unit 2 are：With the transformation temperature sensor J5 of leaving water temperature
Detection obtains and obtained by signal transacting the signal of voltage acquisition in real time.
As shown in figure 4, described reference source signal comparison circuit 3 mainly include operational amplifier LM358, capacitor C8,
Resistor R3 and voltage-regulator diode VD6, the annexation between it is：Resistor R3 one end and 2 pin of LC- π types filter circuit 6
VO connections, the resistor R3 other ends are connected with voltage-regulator diode VD6 negative pole, and voltage-regulator diode VD6 negative pole and and computing
The amplifier LM358 pin of positive input 3 connection, voltage-regulator diode VD6 positive pole connection rectifier bridge IC1 2 pin, operation amplifier
The device LM358 pin of reverse input end 2 is connected with temperature sensor J5 negative pole, operational amplifier the LM358 pin of output end 1 and control
Unit 4 processed is connected.
The operation principle of described reference source signal comparison circuit 3 is：By operational amplifier LM358 by temperature acquisition
Voltage signal obtains voltage signal, control controller work after being compared with output DC voltage VCC signal.
As shown in figure 5, described control unit 4 includes resistor R4, triode Q1, voltage-regulator diode VD7, capacitor C9
With relay IC4, the annexation between it is：The resistor R4 one end concatenation operation amplifiers LM358 pin of output end 1, separately
One end is connected with triode Q1 base stage, after voltage-regulator diode VD7 is in parallel with capacitor C9, voltage-regulator diode VD7 positive pole with
The colelctor electrode connection of triode, the negative pole of voltage-stablizer is connected with 2 pin VO of LC- π types filter circuit 6, and the two of the relay IC4
Individual coil pin is connected between 2 pin VO of the colelctor electrode of triode and LC- π types filter circuit 6, and relay IC4 common port connects
On the live wire for being connected on 220V AC powers 7, relay IC4 normally opened end connection and unit heater.
The operation principle of described control unit 4 is：When the output signal of reference source signal comparison circuit 3 is less than or equal to output
During DC voltage VCC, triode Q1 conductings, relay IC4 adhesives make heater heat water temperature, when reference source signal ratio
When output signal compared with circuit 3 is more than or equal to output DC voltage VCC, triode Q1 cut-offs, relay IC4, which disconnects, causes heating
Device is stopped, so as to effectively provide the security used, water temperature will not be made to heat up always because of heating always, used
Human body will not be scalded in journey.
The red LED lamp of red, relay IC4 normal-closed end and ground are connected between relay IC4 normally opened end and ground
Between connect viridescent LED lamp.So that the current working condition of the display that can be will be apparent that in use.
As shown in fig. 6, being the circuit theory diagrams of whole system of the present invention, the operation principle of its circuit is：The system works
When, circuit connects 220V AC powers 7, and 220V AC powers 7 pass through by rectifier bridge IC1 and filter condenser C3 rectifications, filter
After ripple, produce the high voltage DC busses for TA1 armature windings, the other end of primary winding by interior three integrated ends from
The switch TOP221 drivings of wire type pulse width modulation power, so that output is protected, Transient Suppression Diode VD1 and commutation diode VD2
The forward position voltage peak produced for strangulation by transformer leakage inductance, the secondary windings of transformer is by rectification diode VD3, rectification two
After the rectification of level pipe VD3 and LC- π types filter circuit 6, filtering, 12V stable output DC voltage VCC, at work, temperature are produced
Degree sensor J5S detects the situation of the water temperature in work in real time, and in real time compared afterwards by fortune with the DC voltage of output
Calculate amplifier LM358 amplification and is converted into voltage signal, export to control unit 4, when operational amplifier LM358 output is less than etc.
When DC voltage VCC is exported, triode Q1 conductings so that relay IC4 obtains electric, normal-closed end disconnects, normally opened end adhesive, so that
So that the heater heating at normally opened end is connected to, and when the output of operational amplifier is more than or equal to output DC voltage VCC, three poles
Pipe Q1 ends so that relay IC4 dead electricity, and normally opened end disconnects, normal-closed end adhesive, so that being connected to the heater at normally opened end
Dead electricity, stops heating.
Claims (5)
1. a kind of temperature control system of water tap heating, it is characterized in that, the system includes 220V AC powers（7）、AC/DC
Converting unit（1）, signal acquisition and processing unit（2）, reference source signal comparison circuit（3）, control unit（4）And heater
（5）, described AC/DC converting units（1）For nonlinear switching power mode, and described AC/DC converting units（1）It is defeated
Go out end respectively with reference source signal comparison circuit（3）, signal acquisition and processing unit（2）And control unit（4）Connection, it is described
Signal acquisition and processing unit（2）Processing including the collection to temperature and to collection signal, the signal acquisition and processing are single
Member（2）With reference source signal comparison circuit（3）Input connection, the reference source signal comparison circuit（3）Output end with
Control unit（4）Input connection, control unit（4）Output end and heater（5）Connection, described AC/DC conversions are single
Member（1）By 220V AC powers（7）Direct current supply is obtained after being handled by rectification, filtering, non-linear transformation and voltage-stabilizing protection
Supply voltage, it mainly includes pressure-sensitive resistance device ZR1, capacitor C1, rectifier bridge IC1, capacitor C2, Transient Suppression Diode
It is VD1, commutation diode VD2, filter condenser C3, three end off-line type pulse width modulation powers switch TOP221, transformer TA1, whole
Flow diode VD3, commutation diode VD4 and LC- π type filter circuits（6）；Circuit connecting relation between it is：It is pressure-sensitive
Hinder connection 220V AC powers in one end after device ZR1 and capacitor C1 parallel connections（7）Live wire, the other end connection 220V exchange
Power supply（7）Ground wire, rectifier bridge IC1 1 pin connection 220V AC powers（7）Live wire, the 3 of rectifier bridge IC1
Pin connects 220V AC powers（7）Zero line, be connected to rectifier bridge after filter condenser C2 is in parallel with filter condenser C3
Between IC1 2 pin and 4 pin, and filter condenser C3 positive pole is connected with rectifier bridge IC1 4 pin, and transient state suppresses two
Pole pipe VD1 and commutation diode VD2 positive pole are connected with each other, and Transient Suppression Diode VD1 negative pole and rectifier bridge
It is connected after IC1 4 pin are connected and with one end of transformer TA1 armature winding, commutation diode VD2 negative pole
It is connected with three end off-line type pulse width modulation power switch TOP221 drain electrode end D, and three end off-line type pulse width modulation powers
Switch the other ends of the TOP221 drain electrode end D also with transformer TA1 armature winding to be connected, three end off-line type pulsewidths are adjusted
Resistor R1 and filtered electrical are in series between power switch TOP221 processed control end C and rectifier bridge IC1 2 pin
Container C4, and three end off-line type pulse width modulation powers switch TOP221 control end C and transformer TA1 secondary around
The lead-in wire terminal of group is connected with voltage-stablizer VD5, described commutation diode VD3 positive pole and the secondary of transformer TA1 around
The leading-out terminal connection of group, commutation diode VD3 negative pole is connected with commutation diode VD4 positive poles, and commutation diode
VD4 positive poles and LC- π type filter circuits（6）1 end VI connections, commutation diode VD4 negative poles and transformer TA1
Secondary windings lead-in wire terminal connection.
2. the temperature control system of water tap heating according to claim 1, it is characterized in that：Described signal acquisition and
Processing unit（2）Including temperature sensor J5 and potentiometer R2, the annexation between it is：Temperature during collecting work
Temperature sensor J5 positive pole connection output dc source VCC, and negative pole connected with potentiometer R2 after ground connection.
3. the temperature control system of water tap heating according to claim 1 or 2, it is characterized in that：Described a reference source letter
Number comparison circuit（3）Mainly include operational amplifier LM358, capacitor C8, resistor R3 and voltage-regulator diode VD6,
Annexation between it is：Resistor R3 one end and LC- π type filter circuits（6）2 pin VO connections, resistor R3 is another
One end is connected with voltage-regulator diode VD6 negative pole, and voltage-regulator diode VD6 negative pole and with operational amplifier LM358's
The pin of positive input 3 is connected, voltage-regulator diode VD6 positive pole connection rectifier bridge IC1 2 pin, operational amplifier LM358
The pin of reverse input end 2 be connected with temperature sensor J5 negative pole, the operational amplifier LM358 pin of output end 1 and control
Unit processed（4）Connection.
4. the temperature control system of water tap heating according to claim 3, it is characterized in that：Described control unit（4）
Including resistor R4, triode Q1, voltage-regulator diode VD7, capacitor C9 and relay IC4, the annexation between it
For：The resistor R4 one end concatenation operation amplifiers LM358 pin of output end 1, the base stage of the other end and triode Q1
Connection, after voltage-regulator diode VD7 is in parallel with capacitor C9, voltage-regulator diode VD7 positive pole and the colelctor electrode of triode are connected,
The negative pole of voltage-regulator diode and LC- π type filter circuits（6）2 pin VO connections, two coils of the relay IC4 draw
Pin is connected to the colelctor electrode and LC- π type filter circuits of triode（6）2 pin VO between, relay IC4 common port
It is connected to 220V AC powers（7）Live wire on, relay IC4 normally opened end is in unit heater.
5. the temperature control system of water tap heating according to claim 4, it is characterized in that：Described relay IC4's
Green led lamps are connected between normally opened end and ground, red led lamps are connected between relay IC4 normally opened end and ground.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510459599.XA CN105065769B (en) | 2015-07-31 | 2015-07-31 | The temperature control system of water tap heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510459599.XA CN105065769B (en) | 2015-07-31 | 2015-07-31 | The temperature control system of water tap heating |
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| CN105065769A CN105065769A (en) | 2015-11-18 |
| CN105065769B true CN105065769B (en) | 2017-10-13 |
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| CN109001566B (en) * | 2018-06-29 | 2020-07-31 | 国网河南省电力公司襄城县供电公司 | Intelligent warning board for transformer substation |
| CN114625192B (en) * | 2022-05-17 | 2022-07-29 | 深圳市海泰微电子科技有限公司 | Air fryer control circuit based on single chip microcomputer |
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| CN101825189A (en) * | 2010-05-28 | 2010-09-08 | 周剑冰 | Electronic thermostatic water tap device |
| CN102278525A (en) * | 2011-06-28 | 2011-12-14 | 洪晖堂 | Intelligent instant-heating faucet |
| CN202494941U (en) * | 2012-02-17 | 2012-10-17 | 吴端钦 | Intelligent water boiling control device |
| CN203088518U (en) * | 2013-01-15 | 2013-07-31 | 神讯电脑(昆山)有限公司 | Universal serial bus (USB) vacuum cup with temperature control function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100684373B1 (en) * | 2003-12-31 | 2007-02-20 | 주식회사 인터텍 | Control device of providing warm water with a instantaneous hitting method |
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- 2015-07-31 CN CN201510459599.XA patent/CN105065769B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825189A (en) * | 2010-05-28 | 2010-09-08 | 周剑冰 | Electronic thermostatic water tap device |
| CN102278525A (en) * | 2011-06-28 | 2011-12-14 | 洪晖堂 | Intelligent instant-heating faucet |
| CN202494941U (en) * | 2012-02-17 | 2012-10-17 | 吴端钦 | Intelligent water boiling control device |
| CN203088518U (en) * | 2013-01-15 | 2013-07-31 | 神讯电脑(昆山)有限公司 | Universal serial bus (USB) vacuum cup with temperature control function |
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