CN105334890A - Dryer temperature control system based on bridge type filter circuit - Google Patents
Dryer temperature control system based on bridge type filter circuit Download PDFInfo
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- CN105334890A CN105334890A CN201510856061.2A CN201510856061A CN105334890A CN 105334890 A CN105334890 A CN 105334890A CN 201510856061 A CN201510856061 A CN 201510856061A CN 105334890 A CN105334890 A CN 105334890A
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Abstract
The invention discloses a dryer temperature control system based on a bridge type filter circuit. The dryer temperature control system is mainly composed of a single-chip microcomputer, a display, a temperature value prestoring module, an A/D conversion module, a heater CZ, a power supply and a temperature sensor connected with the A/D conversion module, wherein the display, the temperature value prestoring module, the A/D conversion module, the heater CZ and the power supply are all connected with the single-chip microcomputer. The dryer temperature control system is characterized in that the bridge type filter circuit is connected between the A/D conversion module and the single-chip microcomputer in series, a three-line drive filter circuit is connected between the single-chip microcomputer and the heater CZ, and the three-line drive filter circuit is composed of a drive chip U, a bootstrapping amplification circuit connected with the drive chip U, and an active power filter circuit with the input end connected with the output end of the bootstrapping amplification circuit and the output end connected with the heater CZ. The dryer temperature control system is stable in performance, high in practicability and capable of ensuring stability of the drying temperature of a hot wind type dryer.
Description
Technical field
The present invention relates to the technical field of electromechanical equipment, what be specifically related to is a kind of dryer temperature control system based on bridge filter circuit.
Background technology
At present, along with improving constantly of people's quality of the life, be described as the ornament materials of luxury goods before carpet is this by people, now also by the general ground decoration for places such as family, market, public place of entertainment and offices.Carpet use the regular hour after in order to keep its cleanliness, just need to clean it, the carpet that general family uses mostly is small size carpet tile, outdoor can be placed on after its cleaning to dry, and the carpet area that the places such as market, public place of entertainment and office are laid is larger, and when mostly using, carpet fixes on the ground by viscose glue, special cleaner can only be used to clean on the spot, therefore need after cleaning to dry carpet with dryer time clean.
Existing dryer for carpet has two kinds: a kind of is cold wind formula dryer for carpet, another kind is hot air type dryer for carpet, because hot air type dryer for carpet is higher than the efficiency of cold wind formula dryer for carpet, the working time is short, and be widely used, but existing hot air type dryer for carpet is due to the less stable of temperature control system, low during height when making the temperature of dryer, thus cause the surface of carpet to occur by the roasting bad and large area contracting water problem of high temperature.
Summary of the invention
The intelligent dryer of hot air type carpet that the object of the invention is to overcome prior art, due to the defect of the less stable of temperature control system, provides a kind of dryer temperature control system based on bridge filter circuit.
The present invention is achieved through the following technical solutions: a kind of dryer temperature control system based on bridge filter circuit, primarily of single-chip microcomputer, the pre-storing module of the display be all connected with single-chip microcomputer, temperature value, A/D analog-to-digital conversion module, heating element CZ and power supply, the temperature inductor be connected with A/D analog-to-digital conversion module, three lines be serially connected between single-chip microcomputer and heating element CZ drive filtering circuit, and the bridge filter circuit be serially connected between A/D analog-to-digital conversion module and single-chip microcomputer forms.
Described three lines drive filtering circuit by driving chip U, the bootstrapping amplifying circuit be connected with driving chip U, and the active filter circuit that input end is connected with the output terminal of bootstrapping amplifying circuit, its output terminal is connected with heating element CZ forms; Described active filter circuit is connected with driving chip U.
Described bridge filter circuit is by triode VT5, triode VT6, triode VT7, P pole is connected with the collector of triode VT6 after resistance R18, the diode D7 that N pole is connected with the base stage of triode VT5 after polar capacitor C10, one end is connected with the collector of triode VT5, the resistance R19 that the other end is connected with the P pole of diode D7, negative pole is connected with the emitter of triode VT5 after resistance R20, the polar capacitor C11 that positive pole is connected with the collector of triode VT6 after resistance R21, P pole is connected with the collector of triode VT6, the diode D8 that N pole is connected with the emitter of triode VT6 after resistance R24, one end is connected with the base stage of triode VT6, the resistance R22 that the other end is connected with the negative pole of polar capacitor C11, P pole is connected with the collector of triode VT6 after resistance R23, N pole is as the output terminal of bridge filter circuit and the diode D10 be connected with single-chip microcomputer, P pole is connected with the base stage of triode VT7, the diode D9 that N pole is connected with the emitter of triode VT6 after resistance R25, and positive pole is connected with the base stage of triode VT7, the polar capacitor C12 that negative pole is connected with the emitter of triode VT6 forms, the emitter of described triode VT6 and the emitter of triode VT7 ground connection respectively, the collector of described triode VT7 is connected with the P pole of diode D10, the N pole of described diode D7 is connected with A/D analog-to-digital conversion module as the input end of bridge filter circuit.
Described bootstrapping amplifying circuit is by triode VT1, triode VT2, triode VT3, negative pole in turn resistance R1 is connected with the collector of triode VT3 with after resistance R4 and diode D1, the polar capacitor C1 that positive pole is connected with the base stage of triode VT3, negative pole is connected with the base stage of triode VT3, the polar capacitor C2 that positive pole is connected with the negative pole of polar capacitor C1, one end is connected with the emitter of triode VT3, the resistance R3 that the other end is connected with the CMN pin of driving chip U, negative pole is connected with the CMN pin of driving chip U, the polar capacitor C4 that positive pole is connected with the VFB pin of driving chip U after resistance R5, P pole is connected with the VCC pin of driving chip U after polar capacitor C3, the diode D2 that N pole is connected with the collector of triode VT1, the SEN pin of one end driving chip U is connected, the resistance R7 that the other end is connected with the base stage of triode VT2, P pole is connected with the VOC pin of driving chip U, the diode D3 that N pole is connected with the emitter of triode VT2, and one end is connected with the base stage of triode VT1, the resistance R6 that the base stage of the other end and triode VT3 forms the input end of amplifying circuit of booting jointly forms, the base stage of described triode VT2 is connected with the collector of triode VT1, its grounded collector, the N pole of described diode D2 is connected with the tie point of resistance R1 with resistance R4, the base stage of described triode VT3 and the emitter of triode VT1 form the output terminal of bootstrapping amplifying circuit jointly.
Described active filter circuit is by field effect transistor MOS, triode VT4, P pole is connected with the base stage of triode VT3 after resistance R2 through resistance R9 in turn, the diode D4 that N pole is connected with the drain electrode of field effect transistor MOS after resistance R13, negative pole is connected with the OUT pin of driving chip U after resistance R10, the polar capacitor C6 that positive pole is connected with the grid of field effect transistor MOS, negative pole is connected with the N pole of diode D4 after resistance R14, the polar capacitor C8 that positive pole is connected with the collector of triode VT4 after resistance R15, P pole is connected with the VF pin of driving chip U after resistance R11, N pole is in turn through diode D5 that polar capacitor C5 is connected with the emitter of triode VT1 after resistance R8, positive pole is connected with the source electrode of field effect transistor MOS, the polar capacitor C7 that negative pole is connected with the N pole of diode D5 after resistance R12, one end is connected with the collector of triode VT4, the resistance R16 that the other end is connected with the negative pole of polar capacitor C7, P pole is connected with the base stage of triode VT4, the diode D6 that N pole is connected with the N pole of diode D5 after resistance R17, and positive pole is connected with the emitter of triode VT4, the polar capacitor C9 that the N of negative pole and diode D6 is formed with the output terminal of power filter extremely jointly forms, the GND pin ground connection of described driving chip U.
Further, for guaranteeing result of use of the present invention, described heating element CZ is spiral heat coil, and described display is have the display screen touching and regulate input function, and described driving chip U is UC3843 integrated chip.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) harmonic filtration in the bridge filter circuit of the present invention data-signal that A/D analog-to-digital conversion module can be exported, and can sawtooth wave in erasure signal, thus the accuracy that dryer temperature control system controls the bake out temperature of dryer can be guaranteed.
(2) three lines of the present invention drive filtering circuit can reduce conduction loss, also exportable constant drive current, thus ensure that the stability of dryer temperature control system work.
(3) heating element CZ of the present invention have employed spiral heat coil, and the electrothermal calefactive rate of this spiral heat coil is fast, long service life.
(4) temperature value prestored in the pre-storing module of temperature value of the present invention can carry out corresponding adjustment according to the material of carpet, to guarantee the drying effect of carpet.
Accompanying drawing explanation
Fig. 1 is one-piece construction block diagram of the present invention.
Fig. 2 is the electrical block diagram that three lines of the present invention drive filtering circuit.
Fig. 3 is the electrical block diagram of bridge filter circuit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention is primarily of single-chip microcomputer, the pre-storing module of the display be all connected with single-chip microcomputer, temperature value, A/D analog-to-digital conversion module, heating element CZ and power supply, the temperature inductor be connected with A/D analog-to-digital conversion module, three lines that input end people single-chip microcomputer is connected, its output terminal is connected with heating element CZ drive filtering circuit, and the bridge filter circuit that input end is connected with A/D analog-to-digital conversion module, its output terminal is connected with single-chip microcomputer forms.Described power supply is 220V alternating current, and this 220V alternating current is that whole dryer temperature control system is powered.
During enforcement, described heating element CZ is arranged on the air outlet place of dryer, and temperature inductor is then arranged on heating element CZ.Described temperature inductor for gathering the heating temp of heating element CZ, and by the heating temp information transmission of heating element CZ that collects to A/D analog-to-digital conversion module, is transferred to signal processing module after realizing data analog to digital conversion by A/D analog-to-digital conversion module.The data message generated after conversion is transferred to single-chip microcomputer through bridge filter circuit by described A/D analog-to-digital conversion module.
Meanwhile, the temperature value in the temperature data information received and the pre-storing module of temperature is compared by described single-chip microcomputer, and this single-chip microcomputer sends corresponding signal according to the result that comparison draws and drives filtering circuit to three lines.The driving voltage that the Signal Regulation that three described lines drive filtering circuit then to send according to single-chip microcomputer exports and electric current, thus the heating temp of regulation heating device CZ, make the temperature value in the heating temp of heating element CZ and the pre-storing module of temperature be consistent.
Wherein, described display have employed the display screen having and touch and regulate input function, this display screen is provided with temp regulating function key, come by this function key when arranging predetermined temperature, this display screen can also demonstrate predetermined temperature and the actual temperature of hot air type drier, is convenient to regulate temperature.
As shown in Figure 2; Described three lines drive filtering circuit by driving chip U, the bootstrapping amplifying circuit be connected with driving chip U, and the active filter circuit be connected with the output terminal of bootstrapping amplifying circuit forms.
Further, described bootstrapping amplifying circuit by triode VT1, triode VT2, triode VT3, resistance R1, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, diode D1, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, diode D2, and diode D3 forms.
During connection, the positive pole of polar capacitor C1 is connected with the base stage of triode VT3, its negative pole in turn resistance R1 be connected with the N pole of diode D1 with after resistance R4, the P pole of described diode D1 is then connected with the collector of triode VT3.The negative pole of polar capacitor C2 is connected with the base stage of triode VT3, positive pole is connected with the negative pole of polar capacitor C1.One end of resistance R3 is connected with the emitter of triode VT3, the other end is connected with the CMN pin of driving chip U.The negative pole of polar capacitor C4 is connected with the CMN pin of driving chip U, positive pole is connected with the VFB pin of driving chip U after resistance R5.
Wherein, the N pole of diode D2 is connected with the collector of triode VT1, its P pole is connected with the negative pole of polar capacitor C3, and the positive pole of described polar capacitor C3 is then connected with the VCC pin of driving chip U.The SEN pin of one end driving chip U of resistance R7 is connected, the other end is connected with the base stage of triode VT2.The P pole of diode D3 is connected with the VOC pin of driving chip U, N pole is connected with the emitter of triode VT2.One end of resistance R6 is connected with the base stage of triode VT1, the other end jointly forms the input end of amplifying circuit of booting with the base stage of triode VT3 and is connected with single-chip microcomputer.
The base stage of described triode VT2 is connected with the collector of triode VT1, its grounded collector; The N pole of described diode D2 is connected with the tie point of resistance R1 with resistance R4; The base stage of described triode VT3 and the emitter of triode VT1 jointly form the output terminal of bootstrapping amplifying circuit and are connected with active filter circuit.
Meanwhile, described active filter circuit by field effect transistor MOS, triode VT4, resistance R2, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, diode D4, diode D5, diode D6, polar capacitor C5, polar capacitor C6, polar capacitor C7, polar capacitor C8, and polar capacitor C9 forms.
During connection, the P pole of diode D4 is connected with the base stage of triode VT3 after resistance R2 through resistance R9 in turn, N pole is connected with the drain electrode of field effect transistor MOS after resistance R13.The negative pole of polar capacitor C6 is connected with the OUT pin of driving chip U after resistance R10, positive pole is connected with the grid of field effect transistor MOS.The negative pole of polar capacitor C8 is connected with the N pole of diode D4 after resistance R14, positive pole is connected with the collector of triode VT4 after resistance R15.The P pole of diode D5 is connected with the VF pin of driving chip U after resistance R11, its N pole is connected with the negative pole of polar capacitor C5, and the positive pole of described polar capacitor C5 is connected with the emitter of triode VT1 after resistance R8.
Wherein, the positive pole of polar capacitor C7 is connected with the source electrode of field effect transistor MOS, negative pole is connected with the N pole of diode D5 after resistance R12.One end of resistance R16 is connected with the collector of triode VT4, the other end is connected with the negative pole of polar capacitor C7.The P pole of diode D6 is connected with the base stage of triode VT4, N pole is connected with the N pole of diode D5 after resistance R17.The positive pole of polar capacitor C9 is connected with the emitter of triode VT4, negative pole is extremely jointly formed with the output terminal of power filter with the N of diode D6 and is connected with heating element CZ.The GND pin ground connection of described driving chip U.
When three lines of the present invention drive filtering circuits work, when the heating temp of heating element CZ is lower than temperature value in the pre-storing module of temperature, the OUT pin of described driving chip U also exports high drive current.This high drive current is transferred to field effect transistor MOS after resistance R10 and polar capacitor C6 filters, this field effect transistor MOS starts electric discharge, described triode VT4 must conduct, described three lines drive filtering circuit output HIGH current, now the heating temp of heating element CZ increases, and the temperature value in the heating temp of heating element CZ and the pre-storing module of temperature is consistent.
As shown in Figure 3, described bridge filter circuit by triode VT5, triode VT6, triode VT7, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, polar capacitor C10, polar capacitor C11, polar capacitor C12, diode D7, diode D8, diode D9, and diode D10 forms.
During connection, the P pole of diode D7 is connected with the collector of triode VT6 after resistance R18, its N pole is connected with the negative pole of polar capacitor C10, and the positive pole of described polar capacitor C10 is then connected with the base stage of triode VT5.One end of resistance R19 is connected with the collector of triode VT5, the other end is connected with the P pole of diode D7.The negative pole of polar capacitor C11 is connected with the emitter of triode VT5 after resistance R20, positive pole is connected with the collector of triode VT6 after resistance R21.The P pole of diode D8 is connected with the collector of triode VT6, N pole is connected with the emitter of triode VT6 after resistance R24.
Wherein, one end of resistance R22 is connected with the base stage of triode VT6, the other end is connected with the negative pole of polar capacitor C11.The P pole of diode D10 is connected with the collector of triode VT6 after resistance R23, N pole as bridge filter circuit output terminal and be connected with single-chip microcomputer.The P pole of diode D9 is connected with the base stage of triode VT7, N pole is connected with the emitter of triode VT6 after resistance R25.The positive pole of polar capacitor C12 is connected with the base stage of triode VT7, negative pole is connected with the emitter of triode VT6.
The emitter of described triode VT6 and the emitter of triode VT7 ground connection respectively; The collector of described triode VT7 is connected with the P pole of diode D10; The N pole of described diode D7 is connected with A/D analog-to-digital conversion module as the input end of bridge filter circuit.
As mentioned above, just the present invention can well be realized.
Claims (7)
1. the dryer temperature control system based on bridge filter circuit, primarily of single-chip microcomputer, the pre-storing module of the display be all connected with single-chip microcomputer, temperature value, A/D analog-to-digital conversion module, heating element CZ and power supply, and the temperature inductor be connected with A/D analog-to-digital conversion module forms; It is characterized in that: between A/D analog-to-digital conversion module and single-chip microcomputer, be also serially connected with bridge filter circuit, between single-chip microcomputer and heating element CZ, be also connected with three lines drive filtering circuit; Described three lines drive filtering circuit by driving chip U, the bootstrapping amplifying circuit be connected with driving chip U, and the active filter circuit that input end is connected with the output terminal of bootstrapping amplifying circuit, its output terminal is connected with heating element CZ forms; Described active filter circuit is connected with driving chip U.
2. a kind of dryer temperature control system based on bridge filter circuit according to claim 1, it is characterized in that, described bridge filter circuit is by triode VT5, triode VT6, triode VT7, P pole is connected with the collector of triode VT6 after resistance R18, the diode D7 that N pole is connected with the base stage of triode VT5 after polar capacitor C10, one end is connected with the collector of triode VT5, the resistance R19 that the other end is connected with the P pole of diode D7, negative pole is connected with the emitter of triode VT5 after resistance R20, the polar capacitor C11 that positive pole is connected with the collector of triode VT6 after resistance R21, P pole is connected with the collector of triode VT6, the diode D8 that N pole is connected with the emitter of triode VT6 after resistance R24, one end is connected with the base stage of triode VT6, the resistance R22 that the other end is connected with the negative pole of polar capacitor C11, P pole is connected with the collector of triode VT6 after resistance R23, N pole is as the output terminal of bridge filter circuit and the diode D10 be connected with single-chip microcomputer, P pole is connected with the base stage of triode VT7, the diode D9 that N pole is connected with the emitter of triode VT6 after resistance R25, and positive pole is connected with the base stage of triode VT7, the polar capacitor C12 that negative pole is connected with the emitter of triode VT6 forms, the emitter of described triode VT6 and the emitter of triode VT7 ground connection respectively, the collector of described triode VT7 is connected with the P pole of diode D10, the N pole of described diode D7 is connected with A/D analog-to-digital conversion module as the input end of bridge filter circuit.
3. a kind of dryer temperature control system based on bridge filter circuit according to claim 2, it is characterized in that, described bootstrapping amplifying circuit is by triode VT1, triode VT2, triode VT3, negative pole in turn resistance R1 is connected with the collector of triode VT3 with after resistance R4 and diode D1, the polar capacitor C1 that positive pole is connected with the base stage of triode VT3, negative pole is connected with the base stage of triode VT3, the polar capacitor C2 that positive pole is connected with the negative pole of polar capacitor C1, one end is connected with the emitter of triode VT3, the resistance R3 that the other end is connected with the CMN pin of driving chip U, negative pole is connected with the CMN pin of driving chip U, the polar capacitor C4 that positive pole is connected with the VFB pin of driving chip U after resistance R5, P pole is connected with the VCC pin of driving chip U after polar capacitor C3, the diode D2 that N pole is connected with the collector of triode VT1, the SEN pin of one end driving chip U is connected, the resistance R7 that the other end is connected with the base stage of triode VT2, P pole is connected with the VOC pin of driving chip U, the diode D3 that N pole is connected with the emitter of triode VT2, and one end is connected with the base stage of triode VT1, the resistance R6 that the base stage of the other end and triode VT3 forms the input end of amplifying circuit of booting jointly forms, the base stage of described triode VT2 is connected with the collector of triode VT1, its grounded collector, the N pole of described diode D2 is connected with the tie point of resistance R1 with resistance R4, the base stage of described triode VT3 and the emitter of triode VT1 form the output terminal of bootstrapping amplifying circuit jointly.
4. a kind of dryer temperature control system based on bridge filter circuit according to claim 3, it is characterized in that, described active filter circuit is by field effect transistor MOS, triode VT4, P pole is connected with the base stage of triode VT3 after resistance R2 through resistance R9 in turn, the diode D4 that N pole is connected with the drain electrode of field effect transistor MOS after resistance R13, negative pole is connected with the OUT pin of driving chip U after resistance R10, the polar capacitor C6 that positive pole is connected with the grid of field effect transistor MOS, negative pole is connected with the N pole of diode D4 after resistance R14, the polar capacitor C8 that positive pole is connected with the collector of triode VT4 after resistance R15, P pole is connected with the VF pin of driving chip U after resistance R11, N pole is in turn through diode D5 that polar capacitor C5 is connected with the emitter of triode VT1 after resistance R8, positive pole is connected with the source electrode of field effect transistor MOS, the polar capacitor C7 that negative pole is connected with the N pole of diode D5 after resistance R12, one end is connected with the collector of triode VT4, the resistance R16 that the other end is connected with the negative pole of polar capacitor C7, P pole is connected with the base stage of triode VT4, the diode D6 that N pole is connected with the N pole of diode D5 after resistance R17, and positive pole is connected with the emitter of triode VT4, the polar capacitor C9 that the N of negative pole and diode D6 is formed with the output terminal of power filter extremely jointly forms, the GND pin ground connection of described driving chip U.
5. a kind of dryer temperature control system based on bridge filter circuit according to claim 4, it is characterized in that, described heating element CZ is spiral heat coil.
6. a kind of dryer temperature control system based on bridge filter circuit according to claim 5, is characterized in that, described display is have the display screen touching and regulate input function.
7. a kind of dryer temperature control system based on bridge filter circuit according to claim 6, it is characterized in that, described driving chip U is UC3843 integrated chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510856061.2A CN105334890A (en) | 2015-11-30 | 2015-11-30 | Dryer temperature control system based on bridge type filter circuit |
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| CN201510856061.2A CN105334890A (en) | 2015-11-30 | 2015-11-30 | Dryer temperature control system based on bridge type filter circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105910397A (en) * | 2016-04-29 | 2016-08-31 | 四川蓉幸实业有限公司 | Deflector-type drying system for pseudo-ginseng medicine materials |
| CN105953537A (en) * | 2016-04-27 | 2016-09-21 | 四川蓉幸实业有限公司 | Multi-circuit processing type drying energy-saving system for radix ophiopogonis medicinal material |
| CN105953536A (en) * | 2016-04-27 | 2016-09-21 | 四川蓉幸实业有限公司 | Radix ophiopogonis medicinal material drying energy-saving system controllable in temperature |
| CN106287742A (en) * | 2016-10-09 | 2017-01-04 | 四川恒创博联科技有限责任公司 | A kind of plasma anoxycausis system |
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| CN105953537A (en) * | 2016-04-27 | 2016-09-21 | 四川蓉幸实业有限公司 | Multi-circuit processing type drying energy-saving system for radix ophiopogonis medicinal material |
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Application publication date: 20160217 |
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