CN103135630B - Control circuit of heating and drying device indoor, towel rack and electric blanket thereof - Google Patents
Control circuit of heating and drying device indoor, towel rack and electric blanket thereof Download PDFInfo
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- CN103135630B CN103135630B CN201310036189.5A CN201310036189A CN103135630B CN 103135630 B CN103135630 B CN 103135630B CN 201310036189 A CN201310036189 A CN 201310036189A CN 103135630 B CN103135630 B CN 103135630B
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Abstract
The invention provides a low-voltage direct current heating device with a safe, reliable and steady voltage-output self-control circuit and a towel rack and electric blanket. The self-control circuit is applied into the towel rack and the electric blanket. The circuit comprises an input and output circuit, the electrical load is hot line, pulse width modulation stabilization constant voltage circuit is installed between the output circuit and the input circuit. The output circuit is composed of a signal acquisition circuit which is composed by sensors and an on-off circuit used for controlling breakover and interruption between the output circuit and the electrical load. The on-off circuit is connected with the signal acquisition circuit and the electrical load through a connecting piece. The device provides the electrical load with direct voltage of30-48V so that output voltage can be adjusted automatically under the condition that the input of electric supply is on a rise-and-fall condition. By adoption of a high-frequency isolation transformer, the device has the advantages of being safe and reliable, low in cost, little in energy consumption and high in intellectualization.
Description
Technical field
The present invention relates to a kind of low-voltage direct control circuit, particularly a kind of control circuit providing low-voltage direct electric energy for room inner heating device and the product controlled thereof.
Background technology
Along with socioeconomic develop rapidly, the improving constantly of personal income, the requirement of people to quality of life is also more and more higher.
Every autumn and winter season, domestic heating facility, as household heater, electric blanket and warm hand electric foot warmer etc. are just standby popular to people, in the recent period, a kind of heating, drying towel rack has been there is in the bathroom of some larger star hotels, this towel rack is assembled by the metal heat-conducting tube of hollow to form, the heating wire of directly being powered by 220V civil power is placed in its pipe, during work, heating wire converts electrical energy into heat energy, and this heat energy is outwards dispelled the heat by metal heat-conducting tube and the wet towel ridden on towel rack, wet bath towel dried.
Although the said goods is with many warm and happy to people, it exists following not enough:
1) safety coefficient is lower
Because the said goods great majority of determining are by 220V mains-supplied, have plenty of and 220V civil power is directly added in load, what have is then again to indoor radiating by heating heat-conducting medium (as oil or other high heat storage liquid), thus, this type of heating arrangement in use will be paid special attention to, once misoperation causes a little damage of such device, very easily cause the security incidents such as electric leakage, leakage of oil.
2) automatic control cannot be realized
The said goods majority is the break-make directly being controlled power supply and load RL by switch, and it can not carry out the break-make of automatic control power supply and load according to the temperature arranged, therefore, its power consumption is also higher.
3) price is high
The usual complex structure of this type of heating arrangement, bulky, therefore price is also higher.
Summary of the invention
The technical problem to be solved in the present invention provides the automatic control circuit of safe, reliable and stable constant output voltage for indoor low voltage DC heating arrangement and uses towel rack and the electric blanket of this control circuit.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
The control circuit of heating of house drying unit of the present invention, comprise the input circuit connected with civil power and the output circuit connected with load, described input circuit is formed primarily of full-bridge rectification filter circuit, described load is heating wire, also be provided with between input circuit and output circuit and provide the width modulation of stable constant low pressure direct current to stablize constant voltage circuit to output circuit, described output circuit comprises the signal acquisition circuit that is made up of the sensor in environment disposed in the interior and is controlled the on-off circuit that is turned on or off between output circuit and load by signal acquisition circuit, wherein, the output terminal of input end and full-bridge rectification filter circuit that constant voltage circuit is stablized in width modulation connects, its output terminal connects with the on-off circuit in output circuit, described on-off circuit is connected with signal acquisition circuit and load respectively by web member.
Described width modulation is stablized constant voltage circuit and is comprised switching device, photoelectrical coupler and high-frequency isolation transformer, wherein,
The D end of switching device connects with " 2 " pin of the primary coil of high-frequency isolation transformer, the S end of switching device connects with the negative pole of full-bridge rectification in " 4 " pin of high-frequency isolation transformer first secondary coil and input circuit respectively, and the control end C end of switching device connects with the emitter of phototriode in photoelectrical coupler;
The collector of described phototriode is connected with " 3 " pin of the first secondary coil of high-frequency isolation transformer by the 3rd diode, the positive pole of the light emitting diode in photoelectrical coupler passes through " 6 " pin of the 4th resistance and the 5th diode and high-frequency isolation transformer the 3rd secondary coil, namely output circuit basic voltage output terminal connects, the negative pole of the light emitting diode in photoelectrical coupler connects with the negative pole of controlled stabilivolt, the positive pole of controlled stabilivolt connects with " 7 " pin of high-frequency isolation transformer the 3rd secondary coil, control end " 5 " pin of controlled stabilivolt is by the 5th resistance, second choking coil and the 5th diode connect with " 6 " pin of high-frequency isolation transformer the 3rd secondary coil,
" 1 " pin of the primary coil of high-frequency isolation transformer connects with the full-bridge rectification output terminal of input circuit, and its second secondary coil " 5 " pin, i.e. output circuit operating voltage output terminal, connected with on-off circuit by the 4th diode and the second choking coil.
Described on-off circuit comprises single-chip microcomputer, the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, wherein,
The power source electrode of pin stablizes constant voltage circuit medium-high frequency isolating transformer the 3rd secondary coil respectively " 6 " pin and the second metal-oxide-semiconductor with width modulation of single-chip microcomputer connects, connected with the sensor power end in signal acquisition circuit by web member " 2 " pin simultaneously, the grounding leg of single-chip microcomputer connects with " 7 " pin of pulse-width modulation circuit medium-high frequency isolating transformer the 3rd secondary coil, connected with the grounding leg of described sensor by web member " 3 " pin simultaneously, the input pin of single-chip microcomputer is connected with the signal output part of described sensor by web member " 4 " pin, the output pin of single-chip microcomputer is connected with the second metal-oxide-semiconductor grid by the 7th resistance,
The drain electrode of the second metal-oxide-semiconductor connects with the grid of the first metal-oxide-semiconductor;
The drain electrode of the first metal-oxide-semiconductor is connected with described output circuit operating voltage output terminal by the second choking coil and the 4th diode, and the source electrode of the first metal-oxide-semiconductor is connected with load by web member " 1 " pin.
Described output circuit operating voltage is 30-48V.
Described output circuit operating voltage is 36V.
Described sensor is humidity sensor, temperature sensor, photoelectric sensor or infrared sensor.
Described web member is waterproof plug adaptive mutually and socket.
The model of described switching device is TOP248Y, the model of described photoelectrical coupler is LTV817A, the model of described high-frequency isolation transformer is TRAN_ISDN_12, the model of described controlled stabilivolt is TL431C, described single-chip microcomputer model is STC10F104, and the model of described second metal-oxide-semiconductor and the first metal-oxide-semiconductor is respectively MPF4224 and AP03N70J.
Towel rack of the present invention, comprises the hollow metal pipe forming and hang and take or place wet towel shelf, places the heating wire being provided with and being controlled by the control circuit of described heating of house drying unit of the present invention in described metal tube.
Electric blanket of the present invention, comprises inner core, is arranged with the heating wire controlled by the control circuit of described heating of house drying unit of the present invention in described inner core mid-game.
Compared with prior art, the present invention's adopt full-bridge rectifier filter and width modulation to stablize constant voltage circuit provides 30-48V DC stabilization constant voltage output voltage to the heating indoor device taking heating wire as load, thus, make the present invention's (change as peak times of power consumption and low ebb phase voltage) when civil power input has a larger fluctuation, automatically regulate, guarantee that the output voltage provided to load is in the voltage range of setting.It is high-frequency isolation transformer that the transformer used in constant voltage circuit is stablized in width modulation of the present invention, and therefore, it can guarantee effective isolation of 220V input voltage and output circuit, has ensured the security of output voltage.In addition, signalization Acquisition Circuit and on-off circuit in output circuit, make again the present invention can environmentally humiture, luminance brightness or infrared induction amount dynamic change to the conducting between power supply and load and disconnect carry out intelligentized control method.Structure of the present invention is simple, safe and reliable, cost is low, power consumption less and intelligence degree is high.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
Fig. 3 is the electric current of control end C end and the graph of relation of its dutycycle D of switching device of the present invention.
Fig. 4 is the graph of relation of light emitting diode forward current and phototriode collection radio pressure in photoelectrical coupler of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Reference numeral is as follows:
Input circuit 1, output circuit 2, signal acquisition circuit 21, on-off circuit 22, width modulation stablize constant voltage circuit 3, load R
l, sensors X, temperature sensor Rt, humidity sensor Rs, photoelectric sensor Rg, infrared sensor Rh, switching device (also known as duty cycle adjustment switch) Q1, photoelectrical coupler Q2, the first metal-oxide-semiconductor Q3, the second metal-oxide-semiconductor Q4, high-frequency isolation transformer T, primary coil Ta, the first secondary coil Tb, the second secondary coil Tc, the 3rd secondary coil Td, single-chip microprocessor MCU, web member JP, socket JP1, plug JP2.
As shown in Figure 1, the control circuit of heating of house drying unit of the present invention, be for take heating wire as the family expenses of pyrotoxin load RL, the unlatching of the heating of placing in office building and hotel or drying unit or closedown carry out the circuit that automatically controls, this circuit arrangement is in casing, its input end is connected to 220V city alternating current, after rectification, filtering and transformation, for load RL provides average voltage at the pulsating direct current output voltage of 30-48V, the preferred output voltage of the present invention is 36V DC voltage.
Described heating or drying unit can be family expenses hand warmer, electric foot warmer or electric blanket, also can be the towel racks of drying the rice and flour storeroom, shoe chest baker or the bathroom, hotel that reduce humidity.
Control circuit of the present invention can by being arranged on the sensors X of household indoor, and such as the induction amount of temperature sensor Rt, humidity sensor Rs, photoelectric sensor Rg or infrared sensor Rh automatically starts or closes the power supply to load RL.
As shown in Figure 2, control circuit of the present invention comprises the input circuit 1 connected with civil power and constant voltage circuit 3 is stablized in the output circuit 2 connected with load RL, width modulation, and wherein output circuit 2 comprises on-off circuit 22 and signal acquisition circuit 21.
The safety apparatus FU that described input circuit 1 has comprised surge protection, the current rectifying and wave filtering circuit be made up of the first choking coil L1, full bridge rectifier BR and the second filter capacitor C2, its main conveying of stage circuit downwards pulsating dc voltage.
Constant voltage circuit 3 is stablized in described width modulation, be arranged between input circuit 1 and output circuit 2, its input end connects with the output terminal of the full-bridge rectification filter circuit of input circuit 1, its output terminal connects with the on-off circuit 22 in output circuit 2, when its Main Function Shi city electro-mechanical wave comparatively large (as 85V-265V scope) (the larger voltage fluctuation as occurred under peak of power consumption section or low power consumption section or other fortuitous event), still constant output voltage can be stablized for output circuit 2 provides, the mean value of this output voltage can regulate within the scope of 30V-48V.
Described width modulation is stablized constant voltage circuit 3 and is comprised switching device Q1, photoelectrical coupler Q2, controlled stabilivolt D6 and high-frequency isolation transformer T.
The model of switching device Q1 is TOP248Y, and its frequency of operation is 100K
hZits D holds as drain electrode, S hold as source electrode and C end are control end, the size of the height of the current potential Ucon held by control C and the electric current I c of this end of inflow, control the size of this switching device Q1 dutycycle D, usually, this switching device Q1 dutycycle D holds the size of electric current to change between 1.7-67% (see accompanying drawing 3) with flowing into its control end C, changes the mean value of high-frequency isolation transformer T secondary coil output voltage thus.
The model of photoelectrical coupler Q2 is LTV817A, when the forward current at light emitting diode two ends is wherein greater than 15mA, the complete conducting of its phototriode (see accompanying drawing 4), now, the current potential that switching device Q1 control end C holds is high-frequency isolation transformer T first secondary coil Tb " 3 " pin current potential.
The model of controlled stabilivolt D6 is TL431C, its voltage stabilizing value is 2.5V, internal reference potential value is set as 2.5V, when its control end " 5 " pin current potential is less than this reference potential, controlled stabilivolt D6 ends, now, light emitting diode in photoelectrical coupler Q2 also ends, when its control end " 5 " pin current potential is greater than this reference potential and when having subtle change, will from 1mA to 100mA by the electric current of controlled stabilivolt D6, namely the electric current flowing through light emitting diode also increases thereupon, meanwhile, in described phototriode, collected current also increases until conducting completely thereupon.
The model of high-frequency isolation transformer T is TRAN_ISDN_12, and it can be connected in the wiring effectively between Isolation input circuit 1 with output circuit 2, thus ensures the security of control circuit output voltage of the present invention.The transformation ratio of its primary coil Ta and the second secondary coil Tc is 8:1, when input civil power is 220V, its primary coil Ta input voltage can reach 300V pulsating dc voltage, the output voltage (calling switch level voltage in the following text) of its first secondary coil Tb is set to 5V usually, its second secondary coil Tc output voltage (i.e. output voltage of output circuit supply load RL, call operating voltage in the following text) be usually set to 36V, and its 3rd secondary coil Td output voltage (namely output circuit supplies the operating voltage of other components and parts, call basic voltage in the following text) be usually set to 5V.
The syndeton that constant voltage circuit 3 is stablized in width modulation is as follows:
The D end of switching device Q1 connects with " 2 " pin of the primary coil Ta of high-frequency isolation transformer T, the S end of switching device Q1 connects with " 4 " pin of high-frequency isolation transformer T first secondary coil Tb and the negative pole of full bridge rectifier BR respectively, and the control end C end of switching device Q1 connects with the emitter of the phototriode in photoelectrical coupler Q2;
The collector of described phototriode is connected with " 3 " pin (i.e. the output terminal of described switch level voltage) of high-frequency isolation transformer T first secondary coil Tb by the 3rd diode D3, the positive pole of the light emitting diode of photoelectrical coupler Q2 is connected with " 6 " pin (i.e. described basic voltage output terminal) of high-frequency isolation transformer T the 3rd secondary coil Td by the 4th resistance R4 and the 5th diode D5, the negative pole of light emitting diode connects with the negative pole of controlled stabilivolt D6, the positive pole of controlled stabilivolt D6 connects with " 7 " pin (i.e. grounding leg) of high-frequency isolation transformer T the 3rd secondary coil Td, control end " 5 " pin of controlled stabilivolt D6 is by the 5th resistance R5, second choking coil L2 and the 5th diode D5 connects with " 6 " pin of high-frequency isolation transformer T the 3rd secondary coil Td,
" 1 " pin of the primary coil Ta of high-frequency isolation transformer T connects with the output terminal of full bridge rectifier BR, and its second secondary coil Tc " 5 " pin output terminal (i.e. the output terminal of described operating voltage) is connected with on-off circuit 22 by the 4th diode D4 and the second choking coil L2.
The on-off circuit 22 of described output circuit 2 comprises single-chip microprocessor MCU, the first metal-oxide-semiconductor Q3 and the second metal-oxide-semiconductor Q4, described single-chip microprocessor MCU model is STC10F104, the model of described second metal-oxide-semiconductor Q4 and the first metal-oxide-semiconductor Q3 is respectively MPF4224 and AP03N70J, and its connected mode is:
Single-chip microprocessor MCU pin Vdd stablizes the basic voltage output terminal described in constant voltage circuit 3 and the second metal-oxide-semiconductor Q4 respectively source electrode with width modulation of powering connects, connected with the described sensors X feeder ear in signal acquisition circuit 21 by web member JP " 2 " pin simultaneously, the grounding leg Vss of single-chip microprocessor MCU connects with " 7 " pin (i.e. grounding leg) of pulse-width modulation circuit medium-high frequency isolating transformer T the 3rd secondary coil Td, connected with the grounding leg of described sensors X by web member JP " 3 " pin simultaneously, the input pin IN of single-chip microprocessor MCU is connected with the signal output part OP of described sensors X by web member JP " 4 " pin, the output pin OU of single-chip microprocessor MCU is connected with the second metal-oxide-semiconductor Q4 grid by the 7th resistance R7,
The drain electrode of the second metal-oxide-semiconductor Q4 connects with the grid of the first metal-oxide-semiconductor Q3;
The drain electrode of the first metal-oxide-semiconductor Q3 is connected with the output terminal of described output circuit 2 operating voltage by the second choking coil L2, the 4th diode D4, and the source electrode of the first metal-oxide-semiconductor Q3 is connected with load RL by web member JP " 1 " pin.
Described web member JP is the waterproof plug JP2 socket JP1 with four ports adaptive mutually.
The signal acquisition circuit 21 of described output circuit 2 is made up of the sensors X described in environment disposed in the interior, the voltage of this sensors X output signal is sent to the input end of single-chip microprocessor MCU, after single-chip microprocessor MCU compares with the mode of tabling look-up and the threshold voltage preset, high level or low level is exported to the grid of the second metal-oxide-semiconductor Q4 by its output terminal, thus, make the second metal-oxide-semiconductor Q4 conducting or cut-off, then make the first metal-oxide-semiconductor Q3 conducting or cut-off.When after the first metal-oxide-semiconductor Q3 conducting, the grid potential of the second metal-oxide-semiconductor Q4 is identical with described basic voltage, if during high level, conducting between the drain electrode of the second metal-oxide-semiconductor Q4 and source electrode, namely described operating voltage passes through " 1 " pin supply load RL of described web member JP, in like manner, after the first metal-oxide-semiconductor Q3 ends, second metal-oxide-semiconductor Q4 also ends, and makes output circuit 2 disconnect the connection with load RL thus.
Described humidity sensor Rs is the model that Shi Xin Electronics Co., Ltd. of Shenzhen produces is the sensor of HIH 3610.
Described temperature sensor Rt is the model that DALLAS company of the U.S. produces is the sensor of DS18B20.
Infrared sensor Rh is the model that German Heyman company produces is the sensor of LHI958.
Described heating wire is the model that starlight electric heating product company limited of Shenzhen produces is the heating wire of UL1330-14#.
One, to stablize constant voltage circuit 3 principle of work as follows in the width modulation of control circuit of the present invention:
1) when mains input voltage is lower, after the transformation of rectifying and wave-filtering and high-frequency isolation transformer T, described operating voltage, basic voltage and switch level voltage are all in lower voltage value, meanwhile, controlled stabilivolt D6 control end current potential Uref declines, causing the electric current I f decline (or ending completely) flowing through light emitting diode in photoelectrical coupler Q2 causes phototriode collector current potential Uce to raise then, cause switching device Q1 control end C terminal potential Ucon again to decline, the electric current I c making inflow switching device Q1 control end C hold thus declines, finally, the dutycycle D (%) of this switching device Q1 strengthens as previously mentioned, the ON time of high-frequency isolation transformer T primary coil Ta is made to increase (or being in normal open state), thus, improve the average voltage exported in high-frequency isolation transformer T secondary coil, namely improve described operating voltage, basic voltage and switch level voltage.
2) when mains input voltage is higher, after the transformation of rectifying and wave-filtering and high-frequency isolation transformer T, described operating voltage, basic voltage and switch level voltage are all in higher voltage value, meanwhile, controlled stabilivolt D6 control end current potential Uref raises, causing the electric current I f rising (or conducting completely) flowing through light emitting diode in photoelectrical coupler Q2 causes phototriode collector current potential Uce to decline then, cause switching device Q1 control end C terminal potential Ucon again to raise, the electric current I c making inflow switching device Q1 control end C hold thus raises, finally, the dutycycle D (%) of this switching device Q1 reduces as previously mentioned, the ON time of high-frequency isolation transformer T primary coil Ta is made to shorten (or being in normal off state), thus, reduce the average voltage exported in high-frequency isolation transformer T secondary coil, namely described operating voltage is reduced, basic voltage and switch level voltage.
By the appropriate design to each component parameter, in the scope that civil power input fluctuation is larger, can guarantee that output services voltage is in stable steady state.
Two, the principle of work of the output circuit 2 automatic control break-make of control circuit of the present invention is as follows:
After temperature, humidity, luminance brightness or the infrared induction amount responded to when the described sensors X in signal acquisition circuit 21 reach preset value, its output terminal exports high level, this high level by described web member JP to single-chip microprocessor MCU input end input high level signal, after single-chip microprocessor MCU compares with interior parameter of establishing in the mode of tabling look-up, high level or low level and lasting time is exported to single-chip microprocessor MCU output terminal, as previously mentioned, make conducting or the cut-off of the first metal-oxide-semiconductor Q3 and the second metal-oxide-semiconductor Q4, thus, play the connection or disconnection that control output circuit 2 and load RL.
Towel rack of the present invention, the circuit box of control circuit of the present invention is provided with in comprising, form the hollow metal pipe hung and take or place wet towel shelf, in described metal tube, place the heating wire of the control circuit control being provided with heating of house drying unit of the present invention, described circuit box apparent size is: 130mm (length) × 60mm (wide) × 30mm (thick).Described operating voltage is 36v ± 2v, and temperature controls at 65 DEG C ± 5 DEG C.
Electric blanket of the present invention, the circuit box of control circuit of the present invention, electric blanket inner core and cotton-padded mattress face is provided with in comprising, be arranged with the heating wire of the control circuit control of heating of house drying unit of the present invention in described inner core mid-game, described circuit box apparent size is: 130mm (length) × 60mm (wide) × 30mm (thick).Described operating voltage is 36v ± 2v, and temperature controls at 65 DEG C ± 5 DEG C.
The present invention also has following advantage:
1) safety coefficient is high: this patent adopts high-frequency isolation transformer, and no matter any situation (comprising scorification) appears in primary coil (high-pressure side), and high pressure can not be had in secondary coil to produce.Because this isolating transformer is two completely independently chamber coilings, each other can resistance to 50000 volts of high pressure.Feedback adopts photoelectrical coupler to connect, and by the strong and weak linear feedback of light, do not have the connection of electric elements.Even if switching device burns out completely, high pressure also can not be had to produce leaky by photoelectrical coupler, in addition, also adopt unsettled ground wire to make further safe connection.
2) automatically control to open and close:
Prior art cannot realize automatic control, and it, because of without feedback circuit, only has the opening and closing directly to load supplying, need the used time to open, the used time does not close, so, precisely can not hold the time of opening and closing, both waste electric energy, again likely because carelessness forgets closedown when not using.
The present invention adopts active switch, sensor is utilized to provide the magnitude of voltage of setting to single-chip microprocessor MCU, by the intelligent formula poured in single-chip microprocessor MCU (this intelligent formula is the common practise of this area), the change curve according to " time---humidity (temperature) " is closed as lead.Red cent (reaction time of usual sensor, single-chip microcomputer and metal-oxide-semiconductor is all less than 1 millisecond) can not be wasted more.
3) the low and waterproof protection against the tide of cost: prior art is by civil power directly to load supplying, and the present invention adopts low-voltage DC supply, and its heating wire controlled directly can be immersed in the water use.
Claims (10)
1. the control circuit of a heating of house drying unit, comprise the input circuit (1) connected with civil power and the output circuit (2) connected with load (RL), it is characterized in that: described input circuit (1) is formed primarily of full-bridge rectification filter circuit, described load (RL) is heating wire, also be provided with between input circuit (1) and output circuit (2) and provide the width modulation of stable constant low pressure direct current to stablize constant voltage circuit (3) to output circuit (2), described output circuit (2) comprises the signal acquisition circuit (21) that is made up of the sensor (X) in environment disposed in the interior and is controlled the on-off circuit (22) that is turned on or off between output circuit (2) and load (RL) by signal acquisition circuit (21), wherein, the input end that constant voltage circuit (3) is stablized in width modulation connects with the output terminal of full-bridge rectification filter circuit, its output terminal connects with the on-off circuit (22) in output circuit (2), described on-off circuit (22) is connected with signal acquisition circuit (21) and load (RL) respectively by web member (JP).
2. the control circuit of heating of house drying unit according to claim 1, it is characterized in that: described width modulation is stablized constant voltage circuit (3) and comprised switching device (Q1), photoelectrical coupler (Q2) and high-frequency isolation transformer (T), wherein
The D end of switching device (Q1) connects with " 2 " pin of the primary coil (Ta) of high-frequency isolation transformer (T), the S end of switching device (Q1) connects with " 4 " pin of high-frequency isolation transformer (T) first secondary coil (Tb) and the negative pole of the middle full-bridge rectification of input circuit (1) respectively, and the control end C of switching device (Q1) holds and connects with the emitter of phototriode in photoelectrical coupler (Q2);
The collector of described phototriode is connected by the 3rd diode (D3) " 3 " pin with first secondary coil (Tb) of high-frequency isolation transformer (T), the positive pole of the light emitting diode in photoelectrical coupler (Q2) passes through " 6 " pin of the 4th resistance (R4) and the 5th diode (D5) and high-frequency isolation transformer (T) the 3rd secondary coil (Td), namely output circuit (2) basic voltage output terminal connects, the negative pole of the light emitting diode in photoelectrical coupler (Q2) connects with the negative pole of controlled stabilivolt (D6), the positive pole of controlled stabilivolt (D6) connects with " 7 " pin of high-frequency isolation transformer (T) the 3rd secondary coil (Td), control end " 5 " pin of controlled stabilivolt (D6) is by the 5th resistance (R5), second choking coil (L2) and the 5th diode (D5) connect with " 6 " pin of high-frequency isolation transformer (T) the 3rd secondary coil (Td),
" 1 " pin of the primary coil (Ta) of high-frequency isolation transformer (T) connects with the full-bridge rectification output terminal of input circuit (1), its the second secondary coil (Tc) " 5 " pin, i.e. output circuit (2) operating voltage output terminal, is connected with on-off circuit (22) by the 4th diode (D4) and the second choking coil (L2).
3. the control circuit of heating of house drying unit according to claim 2, it is characterized in that: described on-off circuit (22) comprises single-chip microcomputer (MCU), the first metal-oxide-semiconductor (Q3) and the second metal-oxide-semiconductor (Q4), wherein
The power source electrode of pin stablizes constant voltage circuit (3) medium-high frequency isolating transformer (T) the 3rd secondary coil (Td) respectively " 6 " pin and the second metal-oxide-semiconductor (Q4) with width modulation of single-chip microcomputer (MCU) connects, connected with sensor (X) feeder ear in signal acquisition circuit (21) by web member (JP) " 2 " pin simultaneously, the grounding leg of single-chip microcomputer (MCU) connects with " 7 " pin of pulse-width modulation circuit medium-high frequency isolating transformer (T) the 3rd secondary coil (Td), connected with the grounding leg of described sensor (X) by web member (JP) " 3 " pin simultaneously, the input pin of single-chip microcomputer (MCU) is connected with the signal output part (OP) of described sensor (X) by web member (JP) " 4 " pin, the output pin of single-chip microcomputer (MCU) is connected with the second metal-oxide-semiconductor (Q4) grid by the 7th resistance (R7),
The drain electrode of the second metal-oxide-semiconductor (Q4) connects with the grid of the first metal-oxide-semiconductor (Q3);
The drain electrode of the first metal-oxide-semiconductor (Q3) is connected with described output circuit (2) operating voltage output terminal by the second choking coil (L2) and the 4th diode (D4), and the source electrode of the first metal-oxide-semiconductor (Q3) is connected with load (RL) by web member (JP) " 1 " pin.
4. the control circuit of heating of house drying unit according to claim 3, is characterized in that: described output circuit (2) operating voltage is 30-48V.
5. the control circuit of heating of house drying unit according to claim 4, is characterized in that: described output circuit (2) operating voltage is 36V.
6. the control circuit of the heating of house drying unit according to any one of claim 1-5, is characterized in that: described sensor (X) is humidity sensor (Rs), temperature sensor (Rt), photoelectric sensor (Rg) or infrared sensor (Rh).
7. the control circuit of the heating of house drying unit according to any one of claim 1-5, is characterized in that: described web member (JP) is waterproof plug (JP2) adaptive mutually and socket (JP1).
8. the control circuit of heating of house drying unit according to claim 3, it is characterized in that: the model of described switching device (Q1) is TOP248Y, the model of described photoelectrical coupler (Q2) is LTV817A, the model of described high-frequency isolation transformer (T) is TRAN_ISDN_12, the model of described controlled stabilivolt (D6) is TL431C, described single-chip microcomputer (MCU) model is STC10F104, and the model of described second metal-oxide-semiconductor (Q4) and the first metal-oxide-semiconductor (Q3) is respectively MPF4224 and AP03N70J.
9. a towel rack, comprises the hollow metal pipe forming and hang and take or place wet towel shelf, it is characterized in that: the heating wire that the control circuit placing the heating of house drying unit be provided with according to any one of claim 1-8 in described metal tube controls.
10. an electric blanket, comprises inner core, it is characterized in that: the heating wire being arranged with the control circuit control of the heating of house drying unit according to any one of claim 1-8 in described inner core mid-game.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036189.5A CN103135630B (en) | 2013-01-30 | 2013-01-30 | Control circuit of heating and drying device indoor, towel rack and electric blanket thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036189.5A CN103135630B (en) | 2013-01-30 | 2013-01-30 | Control circuit of heating and drying device indoor, towel rack and electric blanket thereof |
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| CN103135630A CN103135630A (en) | 2013-06-05 |
| CN103135630B true CN103135630B (en) | 2015-04-08 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103654572A (en) * | 2013-12-10 | 2014-03-26 | 无锡万象工业设计有限公司 | Fast-drying type towel rack with intelligent control |
| CN103654578A (en) * | 2013-12-10 | 2014-03-26 | 无锡万象工业设计有限公司 | Novel towel rack |
| CN103654577A (en) * | 2013-12-10 | 2014-03-26 | 无锡万象工业设计有限公司 | Towel rack based on intelligent control and provided with air guide plates |
| CN104090510A (en) * | 2014-06-30 | 2014-10-08 | 温州异星电子科技有限公司 | Towel rack controller |
| CN104375539B (en) * | 2014-12-01 | 2017-06-06 | 刘希武 | A kind of double temperature double control digital display temperature controller of carbon fiber heating mattress |
| CN105534366B (en) * | 2016-02-04 | 2018-02-02 | 李乐 | A kind of hidden towel rack device with infrared heating |
| CN108199590A (en) * | 2017-12-29 | 2018-06-22 | 河南北瑞电子科技有限公司 | A kind of high frequency switch power |
Citations (4)
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| CN101098571A (en) * | 2006-06-28 | 2008-01-02 | 尹正洙 | The electric heat mat controller |
| CN102247073A (en) * | 2011-06-22 | 2011-11-23 | 胡少邦 | Electric blanket and low-voltage constant-temperature control device thereof |
| CN102880202A (en) * | 2012-10-08 | 2013-01-16 | 洪珍 | Intermittent temperature controller for electric blanket |
| CN203178830U (en) * | 2013-01-30 | 2013-09-04 | 管家洪 | Control circuit of indoor warming and drying device, and controlled towel rack and heating blanket |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5306306B2 (en) * | 2010-10-19 | 2013-10-02 | オムロンオートモーティブエレクトロニクス株式会社 | Switching power supply |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098571A (en) * | 2006-06-28 | 2008-01-02 | 尹正洙 | The electric heat mat controller |
| CN102247073A (en) * | 2011-06-22 | 2011-11-23 | 胡少邦 | Electric blanket and low-voltage constant-temperature control device thereof |
| CN102880202A (en) * | 2012-10-08 | 2013-01-16 | 洪珍 | Intermittent temperature controller for electric blanket |
| CN203178830U (en) * | 2013-01-30 | 2013-09-04 | 管家洪 | Control circuit of indoor warming and drying device, and controlled towel rack and heating blanket |
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| CN103135630A (en) | 2013-06-05 |
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