CN105423562A - Intelligent fingerprint control system for electric water heater - Google Patents
Intelligent fingerprint control system for electric water heater Download PDFInfo
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- CN105423562A CN105423562A CN201510964296.3A CN201510964296A CN105423562A CN 105423562 A CN105423562 A CN 105423562A CN 201510964296 A CN201510964296 A CN 201510964296A CN 105423562 A CN105423562 A CN 105423562A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
Abstract
The invention discloses an intelligent fingerprint control system for an electric water heater. The intelligent fingerprint control system is characterized in that the intelligent fingerprint control system mainly comprises a central processing unit, a temperature sensor, a flow sensor, a data memory, an alarm, a heater, a display, a power supply, a fingerprint acquisition module, an adjustable driving and filtering circuit, an image-fingerprint signal transmission circuit and a signal amplification processing circuit, wherein the flow sensor, the data memory, the alarm, the heater, the display, the power supply and the fingerprint acquisition module are connected with the central processing unit; the adjustable driving and filtering circuit is connected between the central processing unit and the heater in series; the image-fingerprint signal transmission circuit is connected between the fingerprint acquisition module and the central processing unit in series; the signal amplification processing circuit is connected between the temperature sensor and the central processing unit in series; the signal amplification processing circuit consists of a signal reception amplification circuit connected with the temperature sensor, and a signal conversion amplification circuit connected with the signal reception amplification circuit; and the output end of the signal conversion amplification circuit is connected with the central processing unit. With the adoption of the intelligent fingerprint control system for the electric water heater, hot water of different temperatures can be provided according to different users.
Description
Technical field
The present invention relates to the technical field of electronic equipment, specifically refer to a kind of electric heater intelligent fingerprint control system.
Background technology
At present, in pot-type boiler, there are gas heater, electric heater and air-source water heater etc., wherein electric heater is easy to use because of it, and not to environment, and widely use, but existing domestic, electric water heater in use, often direct electric heater to be connected with power supply, until power supply disconnects or reaches the setting maximum heating temperature of electric heater, just to stop heating.Especially, when use at ordinary times, be often to maximum heating temperature by electric water heater heating.And during actual use, but cannot be used up hot water, causes the waste of the energy, and existing many electric heaters, add thermally labile during use, the problem of the temperature controlling hot water can not be carried out according to the needs of user.
Summary of the invention
The object of the invention is to overcome electric heater of the prior art can not carry out the temperature controlling hot water defect according to the needs of user, the invention provides a kind of electric heater intelligent fingerprint control system.
The present invention is achieved through the following technical solutions: a kind of electric heater intelligent fingerprint control system, primarily of central processing unit, temperature sensor, the flow sensor be all connected with central processing unit, data storage, alarm, heating element, display, power supply and finger print acquisition module, be serially connected in the adjustable driving filter circuit between central processing unit and heating element, figure line signal circuit between serial connection finger print acquisition module and central processing unit, and be serially connected in the signal processing circuit composition between temperature sensor and central processing unit.
Described adjustable driving filter circuit is by triode VT4, triode VT5, triode VT6, diode D7, diode D9, negative pole is connected with the N pole of diode D7 after resistance R20, the polar capacitor C10 that positive pole is connected with the emitter stage of triode VT4, N pole is connected with the negative pole of polar capacitor C10 after resistance R21, the diode D8 that P pole is connected with the base stage of triode VT6 after resistance R23, one end is connected with the base stage of triode VT4, the resistance R22 that the other end is connected with the N pole of diode D8, positive pole is connected with the base stage of triode VT5, the polar capacitor C11 that negative pole is connected with the base stage of triode VT6, positive pole is connected with the base stage of triode VT6 after adjustable resistance R24, the polar capacitor C12 that negative pole is connected with the N pole of diode D9 after resistance R27, one end is connected with the emitter stage of triode VT5, the resistance R26 that the other end is connected with the P pole of diode D9, and positive pole is connected with the emitter stage of triode VT6 after resistance R25, negative pole and the N of diode D9 extremely jointly form the output of adjustable driving filter circuit and the polar capacitor C13 be connected with heating element forms, the N pole of described diode D8 is extremely all connected with the colelctor electrode of triode VT5 with the P of diode D7, the colelctor electrode of described triode VT4 and the equal ground connection of colelctor electrode of triode VT6, the negative pole of described polar capacitor C10 jointly forms the input of adjustable driving filter circuit with the emitter stage of triode VT4 and is connected with central processing unit.
Described figure line signal circuit is by process chip U2, triode VT2, triode VT3, P pole is connected with the FW pin of process chip U2 after resistance R15, N pole is in turn through diode D4 that resistance R12 is connected with the VIN pin of process chip U2 after polar capacitor C5, negative pole is connected with the SHF pin of process chip U2, the polar capacitor C7 that positive pole is connected with the FW pin of process chip U2, positive pole is connected with the N pole of diode D4 after resistance R13, the polar capacitor C6 that positive pole is connected with the emitter stage of triode VT2 after resistance R14, P pole is connected with the RI pin of process chip U2, the diode D5 that N pole is connected with the negative pole of polar capacitor C6, P pole is connected with the SW pin of process chip U2 after resistance R17, the diode D6 that N pole is connected with the base stage of triode VT3 after resistance R19, positive pole is connected with the OUT pin of process chip U2 after resistance R18, negative pole is as the output of figure line signal circuit and the polar capacitor C9 be connected with central processing unit, and negative pole is connected with the emitter stage of triode VT3, the polar capacitor C8 that positive pole is connected with the SEN pin of process chip U2 after resistance R16 forms, the PWM pin of described process chip U2 is connected with the P pole of diode D6, its SC pin is connected with the base stage of triode VT2, its GND pin ground connection, the grounded collector of described triode VT2, the base stage of described triode VT3 is connected with the positive pole of polar capacitor C9, its grounded collector, the N pole of described diode D4 as figure line signal circuit input and be connected with finger print acquisition module.
Described signal processing circuit is then by the receiver amplifier be connected with temperature sensor, and the signal converter amplifier circuit be connected with receiver amplifier forms; The output of described signal converter amplifier circuit is connected with central processing unit.
Described receiver amplifier is by amplifier P1, triode VT1, positive pole is connected with the positive pole of amplifier P1, negative pole is as the input of receiver amplifier and the polar capacitor C1 be connected with temperature sensor, the diode D1 that N pole is connected with the base stage of triode VT1, P pole is connected with the positive pole of amplifier P1 after resistance R1, the resistance R4 that one end is connected with the colelctor electrode of triode VT1, the other end is connected with the output of amplifier P1, and one end is connected with the negative pole of amplifier P1, the resistance R2 of other end ground connection forms; The output of described amplifier P1 jointly forms the output of receiver amplifier with the emitter stage of triode VT1 and is connected with signal converter amplifier circuit.
Described signal converter amplifier circuit is by process chip U1, amplifier P2, one end is connected with the emitter stage of triode VT1, the adjustable resistance R6 that the other end is connected with the THE pin of process chip U1, negative pole is connected with the CR pin of process chip U1 after resistance R5, the polar capacitor C2 that positive pole is connected with the IN pin of process chip U1 after resistance R3, P pole is connected with the VS pin of process chip U1, the diode D2 that N pole is connected with the positive pole of amplifier P2 after resistance R9, positive pole is connected with the RC pin of process chip U1 after resistance R7, negative pole is in turn through polar capacitor C4 that resistance R10 is connected with the output of amplifier P2 after resistance R11, P pole is connected with the COM pin of process chip U1, the diode D3 that N pole is connected with the positive pole of amplifier P2, and positive pole is connected with the FC pin of process chip U1, the polar capacitor C3 that negative pole is connected with the negative pole of amplifier P2 after resistance R8 forms, the GND pin ground connection of described process chip U1, the output of described amplifier P2 as signal converter amplifier circuit output and be connected with central processing unit.
For guaranteeing practical effect of the present invention, described temperature sensor preferentially adopts SLS100TTP type temperature sensor to realize; Flow sensor then preferentially adopts G1/2 type flow sensor to realize; Finger print acquisition module then preferentially adopts ZNZ-020 type finger print acquisition module to realize simultaneously; And process chip U2 then preferentially adopts PT4107 integrated chip to realize.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) the control electric current that adjustable driving filter circuit of the present invention can export according to central processing unit exports corresponding drive current, ensure that the water temperature of electric heater can be consistent with the temperature in data storage.
(2) finger print information that finger print acquisition module collects can be converted to digital signal by figure line signal circuit of the present invention, export after the digital signal generated after conversion can also being carried out filtering simultaneously, thus ensure that the accuracy of the finger print information that central processing unit receives.
(3) signal processing circuit of the present invention can carry out anti-interference process to the harmonic signal of the temperature analog signal of the water temperature of the water heater collected that temperature sensor exports, temperature analog signal after this process can also be converted to data-signal to carry out amplifying rear output, ensure that this electric heater intelligence control system can connect and the water temperature of water heater is regulated accurately.
(4) present invention employs temperature sensor, the stable performance of this temperature sensor, the accuracy of collecting temperature is high, the advantages such as low price.
(5) flow sensor of the present invention's employing, it has the advantages such as accuracy is high, sensitivity is strong, therefore, ensure that of the present invention electric heater intelligence control system can accurately carry out record to the hot water flow of electric heater.
Accompanying drawing explanation
Fig. 1 is overall structure figure of the present invention.
Fig. 2 is the electrical block diagram of signal processing circuit of the present invention.
Fig. 3 is the electrical block diagram of figure line signal circuit of the present invention.
Fig. 4 is the electrical block diagram of adjustable driving filter circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, the present invention is primarily of central processing unit, temperature sensor, the flow sensor be all connected with central processing unit, data storage, alarm, heating element, display, power supply and finger print acquisition module, be serially connected in the adjustable driving filter circuit between central processing unit and heating element, figure line signal circuit between serial connection finger print acquisition module and central processing unit, and be serially connected in the signal processing circuit composition between temperature sensor and central processing unit.Wherein, as shown in Figure 2, it is by the receiver amplifier be connected with temperature sensor for this signal processing circuit, and the signal converter amplifier circuit be connected with receiver amplifier forms.
For guaranteeing reliability service of the present invention, described central processing unit preferentially adopts LTC3455 integrated chip, the SW pin of this LTC3455 integrated chip is connected with data storage, SET pin is connected with alarm, SIE pin is connected with flow sensor, FEN pin is connected with display, and VC pin is connected with power supply.Described power supply is 12V DC voltage, and this 12V DC voltage is that central processing unit is powered.
As shown in Figure 2, described receiver amplifier by amplifier P1, triode VT1, resistance R1, resistance R2, resistance R4, polar capacitor C1, and diode D1 forms.
During connection, the positive pole of polar capacitor C1 is connected with the positive pole of amplifier P1, negative pole as receiver amplifier input and be connected with temperature sensor.The N pole of diode D1 is connected with the base stage of triode VT1, P pole is connected with the positive pole of amplifier P1 after resistance R1.One end of resistance R4 is connected with the colelctor electrode of triode VT1, the other end is connected with the output of amplifier P1.One end of resistance R2 is connected with the negative pole of amplifier P1, other end ground connection.The output of described amplifier P1 jointly forms the output of receiver amplifier with the emitter stage of triode VT1 and is connected with signal converter amplifier circuit.
Further, described signal converter amplifier circuit by process chip U1, amplifier P2, resistance R3, resistance R5, adjustable resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, polar capacitor C2, polar capacitor C3, polar capacitor C4, diode D2, and diode D3 forms.
During connection, one end of adjustable resistance R6 is connected with the emitter stage of triode VT1, the other end is connected with the THE pin of process chip U1.The negative pole of polar capacitor C2 is connected with the CR pin of process chip U1 after resistance R5, positive pole is connected with the IN pin of process chip U1 after resistance R3.The P pole of diode D2 is connected with the VS pin of process chip U1, N pole is connected with the positive pole of amplifier P2 after resistance R9.
The positive pole of described polar capacitor C4 is connected with the RC pin of process chip U1 after resistance R7, negative pole is connected with the output of amplifier P2 after resistance R11 through resistance R10 in turn.The P pole of diode D3 is connected with the COM pin of process chip U1, N pole is connected with the positive pole of amplifier P2.The positive pole of polar capacitor C3 is connected with the FC pin of process chip U1, negative pole is connected with the negative pole of amplifier P2 after resistance R8.The GND pin ground connection of described process chip U1; The output of described amplifier P2 as signal converter amplifier circuit output and be connected with the SEN pin of LTC3455 integrated chip.
The present invention operationally, the receiver amplifier of the temperature analog signal that temperature sensor collects in signal processing circuit carries out anti-interference process to temperature analog signal, and this temperature analog signal is converted to data-signal by process chip U1 by the signal after receiver amplifier process.This data-signal is transferred to after polar capacitor C3 filtering after amplifier P2 amplifies is transferred to central processing unit.
As shown in Figure 3, it is by process chip U2, triode VT2, triode VT3 for described figure line signal circuit, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, polar capacitor C5, polar capacitor C6, polar capacitor C7, polar capacitor C8, diode D4, diode D5, and diode D6 forms.
During connection, the P pole of diode D4 is connected with the FW pin of process chip U2 after resistance R15, its N pole is connected with the positive pole of polar capacitor C5 after resistance R12, and the negative pole of described polar capacitor C5 is then connected with the VIN pin of process chip U2.The negative pole of polar capacitor C7 is connected with the SHF pin of process chip U2, positive pole is connected with the FW pin of process chip U2.The positive pole of polar capacitor C6 is connected with the N pole of diode D4 after resistance R13, positive pole is connected with the emitter stage of triode VT2 after resistance R14.
The P pole of described diode D5 is connected with the RI pin of process chip U2, N pole is connected with the negative pole of polar capacitor C6.The P pole of diode D6 is connected with the SW pin of process chip U2 after resistance R17, N pole is connected with the base stage of triode VT3 after resistance R19.The positive pole of polar capacitor C9 is connected with the OUT pin of process chip U2 after resistance R18, negative pole as figure line signal circuit output and be connected with the BST pin of LTC3455 integrated chip.The negative pole of polar capacitor C8 is connected with the emitter stage of triode VT3, positive pole is connected with the SEN pin of process chip U2 after resistance R16.
The PWM pin of described process chip U2 is connected with the P pole of diode D6, its SC pin is connected with the base stage of triode VT2, its GND pin ground connection; The grounded collector of described triode VT2; The base stage of described triode VT3 is connected with the positive pole of polar capacitor C9, its grounded collector; The N pole of described diode D4 as figure line signal circuit input and be connected with finger print acquisition module.Operationally, the finger print information that finger print acquisition module collects can be converted to digital signal by figure line signal circuit in the present invention, exports after the digital signal generated can also being carried out filtering after conversion simultaneously.In order to better implement the present invention, described process chip U2 then preferentially adopts PT4107 integrated chip to realize.
As shown in Figure 4, it is by triode VT4, triode VT5, triode VT6 for described adjustable driving filter circuit, resistance R20, resistance R21, resistance R22, resistance R23, adjustable resistance R24, resistance R25, resistance R26, resistance R27, polar capacitor C10, polar capacitor C11, polar capacitor C12, polar capacitor C13, diode D7, diode D8, and diode D9 forms.
During connection, the negative pole of polar capacitor C10 is connected with the N pole of diode D7 after resistance R20, positive pole is connected with the emitter stage of triode VT4.The N pole of diode D8 is connected with the negative pole of polar capacitor C10 after resistance R21, P pole is connected with the base stage of triode VT6 after resistance R23.One end of resistance R22 is connected with the base stage of triode VT4, the other end is connected with the N pole of diode D8.
The positive pole of described polar capacitor C11 is connected with the base stage of triode VT5, negative pole is connected with the base stage of triode VT6.The positive pole of polar capacitor C12 is connected with the base stage of triode VT6 after adjustable resistance R24, negative pole is connected with the N pole of diode D9 after resistance R27.One end of resistance R26 is connected with the emitter stage of triode VT5, the other end is connected with the P pole of diode D9.The positive pole of polar capacitor C13 is connected with the emitter stage of triode VT6 after resistance R25, negative pole extremely jointly forms the output of adjustable driving filter circuit with the N of diode D9 and is connected with heating element.
The N pole of described diode D8 is extremely all connected with the colelctor electrode of triode VT5 with the P of diode D7; The colelctor electrode of described triode VT4 and the equal ground connection of colelctor electrode of triode VT6; The negative pole of described polar capacitor C10 is connected with the PWM pin of LTC3455 integrated chip; The emitter stage of described triode VT4 is connected with the DIM pin of LTC3455 integrated chip.
During operation, described finger print acquisition module preferentially adopts ZNZ-020 type finger print acquisition module to realize, and this finger print acquisition module is for gathering the fingerprint of user.The fingerprint of oneself need be carried out record by finger print acquisition module when the electric heater that first time uses water heater intelligent control system of the present invention to control is had a bath by user, the finger print information of collection is transferred to figure line signal circuit by this finger print acquisition module can be converted to digital signal by the finger print information that finger print acquisition module collects, and is transferred to central processing unit after the digital signal generated can also being carried out filtering after conversion simultaneously.This information is stored in data storage after carrying out analyzing and processing to finger print information by described central processing unit.Described temperature sensor is then for gathering the temperature simulation information of user at the hot water of first time use electric heater, and by collected temperature simulation information transmission to signal processing circuit, temperature simulation information is carried out harmonic carcellation process by this circuit, and being transferred to central processing unit after the temperature simulation information after this process being converted to data message amplification, this central processing unit is transferred to data memory module after processing this data message and stores.Described flow sensor then can gather using the water consumption of electric heater user, and is transferred to data storage by central processing unit and stores.
When, user reuses electric heater that water heater intelligent control system of the present invention controls when having a bath, use and only need input its finger print information at finger print acquisition module place, central processing unit just can search the temperature information with water of this fingerprint automatically in data storage, water consumption information exports the corresponding electric current that controls to adjustable driving filter circuit, the control electric current that this is adjustable driving filter circuit can export according to central processing unit export the water temperature of corresponding drive current to the heating element of electric heater and regulate, water temperature in the water temperature of heating element and data storage is consistent.
Meanwhile, described display is used for temperature value, the discharge of display water heater.Alarm sends chimes of doom when then can in use occur cutting off the water suddenly, and its central processing unit then stops output current, to guarantee that electric heater is not damaged.Electric heater intelligence control system of the present invention is when the non-typing finger print information of user, and temperature, the flow of its hot water are unrestricted, can normally use.
For guaranteeing reliability service of the present invention, described temperature sensor preferentially adopts SLS100TTP type temperature sensor to realize; Described alarm then preferentially adopts to be had highly sensitive HARBT-6000-T alarm and realizes; Flow sensor then preferentially adopts G1/2 type flow sensor to realize; Data storage preferentially adopts C8051F020 type data storage simultaneously.
As mentioned above, just the present invention can well be realized.
Claims (9)
1. an electric heater intelligent fingerprint control system, it is characterized in that, primarily of central processing unit, temperature sensor, the flow sensor be all connected with central processing unit, data storage, alarm, heating element, display, power supply and finger print acquisition module, be serially connected in the adjustable driving filter circuit between central processing unit and heating element, figure line signal circuit between serial connection finger print acquisition module and central processing unit, and be serially connected in the signal processing circuit composition between temperature sensor and central processing unit.
2. a kind of electric heater intelligent fingerprint control system according to claim 1, it is characterized in that, described adjustable driving filter circuit is by triode VT4, triode VT5, triode VT6, diode D7, diode D9, negative pole is connected with the N pole of diode D7 after resistance R20, the polar capacitor C10 that positive pole is connected with the emitter stage of triode VT4, N pole is connected with the negative pole of polar capacitor C10 after resistance R21, the diode D8 that P pole is connected with the base stage of triode VT6 after resistance R23, one end is connected with the base stage of triode VT4, the resistance R22 that the other end is connected with the N pole of diode D8, positive pole is connected with the base stage of triode VT5, the polar capacitor C11 that negative pole is connected with the base stage of triode VT6, positive pole is connected with the base stage of triode VT6 after adjustable resistance R24, the polar capacitor C12 that negative pole is connected with the N pole of diode D9 after resistance R27, one end is connected with the emitter stage of triode VT5, the resistance R26 that the other end is connected with the P pole of diode D9, and positive pole is connected with the emitter stage of triode VT6 after resistance R25, negative pole and the N of diode D9 extremely jointly form the output of adjustable driving filter circuit and the polar capacitor C13 be connected with heating element forms, the N pole of described diode D8 is extremely all connected with the colelctor electrode of triode VT5 with the P of diode D7, the colelctor electrode of described triode VT4 and the equal ground connection of colelctor electrode of triode VT6, the negative pole of described polar capacitor C10 jointly forms the input of adjustable driving filter circuit with the emitter stage of triode VT4 and is connected with central processing unit.
3. a kind of electric heater intelligent fingerprint control system according to claim 2, it is characterized in that, described figure line signal circuit is by process chip U2, triode VT2, triode VT3, P pole is connected with the FW pin of process chip U2 after resistance R15, N pole is in turn through diode D4 that resistance R12 is connected with the VIN pin of process chip U2 after polar capacitor C5, negative pole is connected with the SHF pin of process chip U2, the polar capacitor C7 that positive pole is connected with the FW pin of process chip U2, positive pole is connected with the N pole of diode D4 after resistance R13, the polar capacitor C6 that positive pole is connected with the emitter stage of triode VT2 after resistance R14, P pole is connected with the RI pin of process chip U2, the diode D5 that N pole is connected with the negative pole of polar capacitor C6, P pole is connected with the SW pin of process chip U2 after resistance R17, the diode D6 that N pole is connected with the base stage of triode VT3 after resistance R19, positive pole is connected with the OUT pin of process chip U2 after resistance R18, negative pole is as the output of figure line signal circuit and the polar capacitor C9 be connected with central processing unit, and negative pole is connected with the emitter stage of triode VT3, the polar capacitor C8 that positive pole is connected with the SEN pin of process chip U2 after resistance R16 forms, the PWM pin of described process chip U2 is connected with the P pole of diode D6, its SC pin is connected with the base stage of triode VT2, its GND pin ground connection, the grounded collector of described triode VT2, the base stage of described triode VT3 is connected with the positive pole of polar capacitor C9, its grounded collector, the N pole of described diode D4 as figure line signal circuit input and be connected with finger print acquisition module.
4. a kind of electric heater intelligent fingerprint control system according to claim 3, it is characterized in that, described signal processing circuit is then by the receiver amplifier be connected with temperature sensor, and the signal converter amplifier circuit be connected with receiver amplifier forms; The output of described signal converter amplifier circuit is connected with central processing unit.
5. a kind of electric heater intelligent fingerprint control system according to claim 4, it is characterized in that, described receiver amplifier is by amplifier P1, triode VT1, positive pole is connected with the positive pole of amplifier P1, negative pole is as the input of receiver amplifier and the polar capacitor C1 be connected with temperature sensor, N pole is connected with the base stage of triode VT1, the diode D1 that P pole is connected with the positive pole of amplifier P1 after resistance R1, one end is connected with the colelctor electrode of triode VT1, the resistance R4 that the other end is connected with the output of amplifier P1, and one end is connected with the negative pole of amplifier P1, the resistance R2 of other end ground connection forms, the output of described amplifier P1 jointly forms the output of receiver amplifier with the emitter stage of triode VT1 and is connected with signal converter amplifier circuit.
6. a kind of electric heater intelligent fingerprint control system according to claim 5, it is characterized in that, described signal converter amplifier circuit is by process chip U1, amplifier P2, one end is connected with the emitter stage of triode VT1, the adjustable resistance R6 that the other end is connected with the THE pin of process chip U1, negative pole is connected with the CR pin of process chip U1 after resistance R5, the polar capacitor C2 that positive pole is connected with the IN pin of process chip U1 after resistance R3, P pole is connected with the VS pin of process chip U1, the diode D2 that N pole is connected with the positive pole of amplifier P2 after resistance R9, positive pole is connected with the RC pin of process chip U1 after resistance R7, negative pole is in turn through polar capacitor C4 that resistance R10 is connected with the output of amplifier P2 after resistance R11, P pole is connected with the COM pin of process chip U1, the diode D3 that N pole is connected with the positive pole of amplifier P2, and positive pole is connected with the FC pin of process chip U1, the polar capacitor C3 that negative pole is connected with the negative pole of amplifier P2 after resistance R8 forms, the GND pin ground connection of described process chip U1, the output of described amplifier P2 as signal converter amplifier circuit output and be connected with central processing unit.
7. a kind of electric heater intelligent fingerprint control system according to claim 6, is characterized in that, described temperature sensor is SLS100TTP type temperature sensor; Described flow sensor is G1/2 type flow sensor.
8. a kind of electric heater intelligent fingerprint control system according to claim 7, is characterized in that, described finger print acquisition module is ZNZ-020 type finger print acquisition module.
9. a kind of electric heater intelligent fingerprint control system according to claim 8, it is characterized in that, described process chip U2 is PT4107 integrated chip.
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| CN201510964296.3A CN105423562A (en) | 2015-12-20 | 2015-12-20 | Intelligent fingerprint control system for electric water heater |
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| CN201510964296.3A CN105423562A (en) | 2015-12-20 | 2015-12-20 | Intelligent fingerprint control system for electric water heater |
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| CN103034264A (en) * | 2011-09-30 | 2013-04-10 | 北大方正集团有限公司 | Temperature controlling device |
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|---|---|---|---|---|
| US4236548A (en) * | 1979-06-01 | 1980-12-02 | Howard E W | Apparatus for providing instant hot water |
| CN2690931Y (en) * | 2004-03-19 | 2005-04-06 | 常继军 | Constant temperature intelligent controller |
| CN103034264A (en) * | 2011-09-30 | 2013-04-10 | 北大方正集团有限公司 | Temperature controlling device |
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