CN105373149A - Two-level band-pass filtering and amplifying circuit-based intelligent aerator control system - Google Patents

Two-level band-pass filtering and amplifying circuit-based intelligent aerator control system Download PDF

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CN105373149A
CN105373149A CN201510920680.3A CN201510920680A CN105373149A CN 105373149 A CN105373149 A CN 105373149A CN 201510920680 A CN201510920680 A CN 201510920680A CN 105373149 A CN105373149 A CN 105373149A
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resistance
diode
pole
triode
polar capacitor
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王艳
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Chengdu Handao Technology Co Ltd
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Chengdu Handao Technology Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00Control of flow ratio
    • G05D11/02Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/135Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by sensing at least one property of the mixture
    • G05D11/138Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by sensing at least one property of the mixture by sensing the concentration of the mixture, e.g. measuring pH value

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)

Abstract

The invention discloses a two-level band-pass filtering and amplifying circuit-based intelligent aerator control system. The two-level band-pass filtering and amplifying circuit-based intelligent aerator control system is mainly composed of a central processor as well as a display, a data memory, an AD (analog-to-digital) converter, an electromagnetic vibration type air pump and a power supply which are respectively connected with the central processor, an oxygen concentration sensor connected with the AD (analog-to-digital) converter, and a surge current limiting circuit which is connected in series beaten the central processor and the power supply. The two-level band-pass filtering and amplifying circuit-based intelligent aerator control system is characterized in that a two-level band-pass filtering and amplifying circuit is connected in series between the AD (analog-to-digital) converter and the oxygen concentration sensor; and the two-level band-pass filtering and amplifying circuit is composed of a band-pass filtering circuit connected with the oxygen concentration sensor and a partial value amplifying circuit connected with the band-pass filtering circuit. The two-level band-pass filtering and amplifying circuit-based intelligent aerator control system of the invention has the advantages of high controllability, stable oxygen production performance, small working noise, high oxygen production rate and long service life. With the two-level band-pass filtering and amplifying circuit-based intelligent aerator control system adopted, the startup and shutdown of an aerator can be automatically controlled, and resources can be effectively saved.

Description

A kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit
Technical field
The present invention relates to the technical field of intelligent electronic device, what be specifically related to is a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit.
Background technology
Along with the raising of people's quality of the life, increasing people likes buying a fish jar and raises small goldfish, and indoor use fish jar is raised small goldfish and usually be there will be the situation of small goldfish for hypoxgia.Usually adopt oxygenation machine to be fish pot oxygen increasing at present, thus bring up good oxygen atmosphere to small goldfish.Use oxygenation machine for oxygen-supplying amount during fish pot oxygen increasing is not enough or all can endanger the shoal of fish for oxygen excess, therefore use oxygenation machine for stability and the accuracy of the amount of oxygen of fish jar must be ensured during fish pot oxygen increasing.But existing oxygenation machine adopts button cut-off switch to carry out oxygenation to control oxygenation machine to fish jar mostly, and this control mode cannot ensure stability and the accuracy of amount of oxygen in fish jar.
Summary of the invention
The control mode that the object of the invention is to the fish jar oxygenation machine overcoming prior art cannot ensure the stability of amount of oxygen and the defect of accuracy in fish jar, provides a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit.
The present invention is achieved through the following technical solutions: a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit, primarily of central processing unit, the display be all connected with central processing unit, data-carrier store, AD analog to digital converter, Electromagnetically vibrating pneumatic pump and power supply, the oxygen concentration sensor be connected with AD analog to digital converter, and be serially connected in and between central processing unit and power supply, be also serially connected with ICLC composition.Simultaneously, two-stage bandpass filtering amplifying circuit is also serially connected with between AD analog to digital converter and oxygen concentration sensor, described two-stage bandpass filtering amplifying circuit, by the bandwidth-limited circuit be connected with oxygen concentration sensor, is connected with the output terminal of bandwidth-limited circuit with input end, inclined value amplifying circuit that its output terminal is connected with AD analog to digital converter forms.
Described bandwidth-limited circuit is by amplifier P1, triode VT6, negative pole is connected with the electrode input end of amplifier P1 after resistance R27, positive pole is in turn through polar capacitor C18 that resistance R25 is connected with the output terminal of amplifier P1 after diode D13 and resistance R26, negative pole is connected with the output terminal of amplifier P1, the polar capacitor C19 that positive pole is connected with the electrode input end of amplifier P1, one end is connected with the emitter of triode VT6, the resistance R28 that the other end is connected with the output terminal of amplifier P1, negative pole is connected with the output terminal of amplifier P1, the polar capacitor C20 that positive pole is connected with the base stage of triode VT6, and one end is connected with the collector of triode VT6, the resistance R29 that the emitter of the other end and triode VT6 forms bandwidth-limited circuit output terminal jointly forms, the negative pole of described polar capacitor C18 as bandwidth-limited circuit input end and be connected with oxygen concentration sensor, the negative input ground connection of described amplifier P1.
Described inclined value amplifying circuit is by amplifier P2, triode VT5, N pole is connected with the emitter of triode VT6, the diode D14 that P pole is connected with the base stage of triode VT5 after resistance R31, P pole is connected with the P pole of diode D14 after resistance R30, the diode D15 that N pole is connected with the negative input of amplifier P2, positive pole is connected with the P pole of diode D15, the polar capacitor C22 that negative pole is connected with the output terminal of amplifier P2 after resistance R33, negative pole is connected with the collector of triode VT5, the polar capacitor C21 that positive pole is connected with the electrode input end of amplifier P2, and one end is connected with the electrode input end of amplifier P2, the resistance R32 that the other end is connected with the output terminal of amplifier P2 forms, the emitter of described triode VT5 is connected with the collector of triode VT6 after resistance R29, its grounded collector, the output terminal of described amplifier P2 is as the output terminal being partially worth amplifying circuit.
Described ICLC is by transformer T, be arranged on the fuse FU on the non-same polarity of transformer T former limit telefault, be connected to the negative resistance oscillator circuits between the Same Name of Ends of the secondary inductance coil of transformer T and non-same polarity, the load triggers circuit that input end is connected with the output terminal of negative resistance oscillator circuits, its output terminal is connected with central processing unit, and be connected to the self-excitation buffer circuit composition between the Same Name of Ends of former limit telefault of transformer T and load triggers circuit; Described negative resistance oscillator circuits is by diode D5, the diode D8 that P pole is connected with the N pole of diode D5, N pole is connected with the P pole of diode D5 after diode D6 through diode D7 in turn forms, described diode D5 is connected with the Same Name of Ends of the secondary coil of transformer T with the tie point of diode D8, and diode D6 is then connected with the non-same polarity of the secondary coil of transformer T with the tie point of diode D7; Tie point and the diode D8 of described diode D5 and diode D6 are all connected with load triggers circuit with the tie point of diode D7.
Further, described self-excitation buffer circuit is by triode VT1, unidirectional transistor SCR, positive pole is connected with the base stage of triode VT1 after resistance R1, the polar capacitor C1 that negative pole is connected with the control end of unidirectional transistor SCR after resistance R2, positive pole is connected with the collector of triode VT1 after resistance R3, negative pole is in turn through polar capacitor C3 that resistance R7 is connected with the positive pole of unidirectional transistor SCR after resistance R6, P pole is connected with the emitter of triode VT1, N pole is in turn through diode D2 that resistance R5 is connected with the control end of unidirectional transistor SCR after resistance R4 and polar capacitor C2, positive pole is connected with the control end of unidirectional transistor SCR after diode D1, the polar capacitor C5 that negative pole is connected with load triggers circuit after resistance R8, and negative pole is connected with the Same Name of Ends of the primary coil of transformer T, the polar capacitor C4 that positive pole is connected with the tie point of resistance R7 with resistance R6 forms, the base stage of described triode VT1 is connected with the negative pole of unidirectional transistor SCR, and the negative pole of polar capacitor C1 then jointly forms the input end of ICLC with the non-same polarity of the primary coil of transformer T and is connected with power supply, the positive pole of described polar capacitor C4 is connected with load triggers circuit.
Described load triggers circuit is by triode VT2, triode VT3, P pole is connected with the positive pole of polar capacitor C4, the diode D3 that N pole is connected with the base stage of triode VT2, negative pole is connected with the collector of triode VT3 after resistance R11, the polar capacitor C8 that positive pole is connected with the base stage of triode VT2 after resistance R9, positive pole is connected with the tie point of diode D5 with diode D6, negative pole is in turn through polar capacitor C7 that diode D4 is connected with the emitter of triode VT2 after resistance R10, positive pole is connected with the negative pole of polar capacitor C7 after resistance R12, the polar capacitor C6 that negative pole is connected with the collector of triode VT3 after resistance R14, and one end is connected with the emitter of triode VT3, the resistance R13 that the negative pole of the other end and polar capacitor C6 forms the output terminal of ICLC jointly forms, the base stage of described triode VT3 is connected with the tie point of diode D8 with diode D7, and the collector of described triode VT2 is then connected with the negative pole of polar capacitor C5 after resistance R8.
For guaranteeing practical effect of the present invention, described display is have the LCDs touching regulatory function, and described Electromagnetically vibrating pneumatic pump is super-silent YT-301 oxygen increasing pump.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) two-stage bandpass filtering amplifying circuit of the present invention is by after the frequency component in the frequency range of the oxygen value signal to oxygen concentration sensor transmission, effectively the frequency component of other scopes is decayed to pole low-level, passing through of harmonic wave can also be stoped simultaneously, thus ensure that the accuracy of intelligent oxygenerator control system.
(2) present invention employs ICLC and can provide stable voltage control for the central processing unit of intelligent aerator control system of the present invention, thus guarantee the determinacy of intelligent aerator control system of the present invention.
(3) Electromagnetically vibrating pneumatic pump of the present invention have employed super-silent YT-301 oxygen increasing pump, the stable performance of this oxygen increasing pump, the advantage such as during work noise is little.
Accompanying drawing explanation
Fig. 1 is one-piece construction block diagram of the present invention.
Fig. 2 is the electrical block diagram of ICLC of the present invention.
Fig. 3 is the electrical block diagram of two-stage bandpass filtering amplifying 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 central processing unit, the display be all connected with central processing unit, data-carrier store, AD analog to digital converter, Electromagnetically vibrating pneumatic pump and power supply, the oxygen concentration sensor be connected with AD analog to digital converter, the ICLC that input end is connected with power supply, its output terminal central processing unit is connected, and the two-stage bandpass filtering amplifying circuit that input end is connected with oxygen concentration sensor, its output terminal is connected with AD analog to digital converter forms.
For guaranteeing reliability service of the present invention, described central processing unit is LTC3452 integrated chip, the ENH pin of this LTC3452 integrated chip is connected with display, SW pin is connected with data-carrier store, IN pin is connected with AD analog to digital converter, and OUT pin is connected with Electromagnetically vibrating pneumatic pump.Described power supply is 220V alternating current, and this 220V alternating current is that central processing unit of the present invention is powered by being converted to 12V direct current after ICLC vibration current limliting.
As shown in Figure 2, it is by transformer T, fuse FU, negative resistance oscillator circuits, load triggers circuit for the structure of described ICLC, and self-excitation buffer circuit composition.Wherein, fuse FU is as the protection element of circuit, and it is serially connected on the non-same polarity circuit of the primary coil of transformer T, and described negative resistance oscillator circuits is then made up of diode D5, diode D6, diode D7 and diode D8.During connection, the N pole of diode D5 is connected with the P pole of diode D8, and the N pole of diode D6 is connected with the P pole of diode D7; Meanwhile, the N pole of this diode D5 is connected with the Same Name of Ends of the secondary coil of transformer T, and the N pole of diode D6 is then connected with the non-same polarity of the secondary coil of transformer T.Tie point and the diode D8 of described diode D5 and diode D6 are all connected with load triggers circuit with the tie point of diode D7.
Described self-excitation buffer circuit then by triode VT1, unidirectional transistor SCR, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, polar capacitor C5, diode D1, and diode D2 forms.
During connection, the positive pole of polar capacitor C1 is connected with the base stage of triode VT1 after resistance R1, negative pole is connected with the control end of unidirectional transistor SCR after resistance R2.The positive pole of polar capacitor C3 is connected with the collector of triode VT1 after resistance R3, negative pole is connected with the positive pole of unidirectional transistor SCR after resistance R6 through resistance R7 in turn.Meanwhile, the P pole of diode D2 is connected with the emitter of triode VT1, its N pole is connected with the negative pole of polar capacitor C2 after resistance R4 through resistance R5 in turn, and the positive pole of described polar capacitor C2 is then connected with the control end of unidirectional transistor SCR.
The negative pole of polar capacitor C4 is connected with the Same Name of Ends of the former limit telefault of transformer T, and its positive pole is then connected with the tie point of resistance R7 with resistance R6.Meanwhile, the positive pole of polar capacitor C5 is connected with the control end of unidirectional transistor SCR after diode D1, and its negative pole is connected with load triggers circuit after resistance R8.The base stage of described triode VT1 is connected with the negative pole of unidirectional transistor SCR, and the negative pole of polar capacitor C1 forms the input end of whole ICLC and is connected with power supply together with the non-same polarity of the primary coil of transformer T.
Described load triggers circuit is by then triode VT2, triode VT3, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, polar capacitor C6, polar capacitor C7, polar capacitor C8, diode D3, and diode D4 forms.
During connection, the P pole of diode D3 is connected with the positive pole of polar capacitor C4, and its N pole is then connected with the base stage of triode VT2.The negative pole of polar capacitor C8 is connected with the collector of triode VT3 after resistance R11, positive pole is connected with the base stage of triode VT2 after resistance R9.The positive pole of polar capacitor C7 is connected with the P pole of diode D6, its negative pole is connected with the N pole of diode D4, and the P pole of described diode D4 is connected with the emitter of triode VT2 after resistance R10.
Wherein, the positive pole of polar capacitor C6 is connected with the negative pole of polar capacitor C7 after resistance R12, negative pole is connected with the collector of triode VT3 after resistance R14.One end of resistance R13 is connected with the emitter of triode VT3, the other end as ICLC a wherein output terminal and be connected with the VC pin of LTC3452 integrated chip.The base stage of described triode VT3 is connected with the N pole of diode D7, and the P pole of described diode D3 is connected with the tie point of resistance R6 with resistance R7; The negative pole of described polar capacitor C6 as ICLC another output terminal and be connected with the PV pin of LTC3452 integrated chip.
As shown in Figure 3, it is made up of bandwidth-limited circuit and inclined value amplifying circuit described two-stage bandpass filtering amplifying circuit; Described bandwidth-limited circuit by amplifier P1, triode VT6, resistance R25, resistance R26, resistance R27, resistance R28, resistance R29, diode D13, polar capacitor C18, polar capacitor C19, and polar capacitor C20 forms.
During connection, the negative pole of polar capacitor C18 is connected with the electrode input end of amplifier P1 after resistance R27, its positive pole is connected with the P pole of diode D13 after resistance R25, and the N pole of described diode D13 is connected with the output terminal of amplifier P1 after resistance R26.The negative pole of polar capacitor C19 is connected with the output terminal of amplifier P1, positive pole is connected with the electrode input end of amplifier P1.One end of resistance R28 is connected with the emitter of triode VT6, the other end is connected with the output terminal of amplifier P1.The negative pole of polar capacitor C20 is connected with the output terminal of amplifier P1, positive pole is connected with the base stage of triode VT6.One end of resistance R29 is connected with the collector of triode VT6, the other end forms bandwidth-limited circuit output terminal jointly with the emitter of triode VT6 and be connected with partially value amplifying circuit.
The negative pole of described polar capacitor C18 as bandwidth-limited circuit input end and be connected with oxygen concentration sensor; The negative input ground connection of described amplifier P1.
Meanwhile, described inclined value amplifying circuit by amplifier P2, triode VT5, resistance R30, resistance R31, resistance R32, resistance R33, diode D14, diode D15, polar capacitor C21, and polar capacitor C22 forms.
During connection, the N pole of diode D14 is connected with the emitter of triode VT6, P pole is connected with the base stage of triode VT5 after resistance R31.The P pole of diode D15 is connected with the P pole of diode D14 after resistance R30, N pole is connected with the negative input of amplifier P2.The positive pole of polar capacitor C22 is connected with the P pole of diode D15, negative pole is connected with the output terminal of amplifier P2 after resistance R33.The negative pole of polar capacitor C21 is connected with the collector of triode VT5, positive pole is connected with the electrode input end of amplifier P2.One end of resistance R32 is connected with the electrode input end of amplifier P2, the other end is connected with the output terminal of amplifier P2.
The emitter of described triode VT5 is connected with the collector of triode VT6 after resistance R29, its grounded collector; The output terminal of described amplifier P2 as value amplifying circuit partially output terminal and be connected with AD analog to digital converter.
The present invention operationally, the oxygen value simulating signal that oxygen concentration sensing exports is transferred to amplifier P1 and carries out amplifications and process after polar capacitor C18 and resistance R27 filtering, and the simulating signal after this amplification process outputs to through the output terminal of amplifier P1 the harmonic processing circuit be made up of polar capacitor C19, polar capacitor C20, triode VT6, resistance R28 and carries out harmonic carcellation process.This simulating signal after harmonic circuit process carries out signal anti-interference process through triode VT5, amplifier P2, polar capacitor C21, diode D15, and the simulating signal after anti-interference process is carried out amplifying rear output.
The present invention is when implementing, and first according to using the oxygen pre-stored values of quantity to described data-carrier store of fish in the volume of the fish jar of aerator and fish jar to set, the data-carrier store in the present invention is C8051F020 data-carrier store.Then, gathered the oxygen value information in fish tank water by the oxygen concentration sensor be placed in fish jar, the oxygen value information of collection is converted to analog signal transmission to two-stage bandpass filtering amplifying circuit by this oxygen concentration sensor.Described two-stage bandpass filtering amplifying circuit leads to and carries out component to the frequency in the frequency range of the simulating signal of oxygen concentration sensor transmission, and the frequency component of other scopes is decayed to pole low-level, stops passing through of harmonic wave simultaneously.Simulating signal after the process of two-stage bandpass filtering amplifying circuit component is then carried out modulus data conversion by described AD analog to digital converter, this AD analog to digital converter by the data information transfer that generates after conversion to central processing unit.Oxygen concentration sensor in the present invention is gyh25 oxygen concentration sensor, and the AD analog to digital converter is simultaneously ADC0809AD analog to digital converter.
Simultaneously, oxygen pre-stored values in the data message of the oxygen in the fish tank water received and data-carrier store is compared by described central processor, and exports the oxygen making amount of corresponding electric current to Electromagnetically vibrating pneumatic pump according to the oxygen data information that obtains after contrast and control.
Wherein, described display have employed the display having and touch and regulate input function, this display is provided with oxygen value regulatory function key, come by this function key when arranging predetermined oxygen value, this display can also demonstrate the actual oxygen value in the preset oxygen value of fish jar and fish tank water, is convenient to regulate the oxygen value in preset fish tank water.
As mentioned above, just the present invention can well be realized.

Claims (8)

1. the intelligent aerator control system based on two-stage bandpass filtering amplifying circuit, primarily of central processing unit, the display be all connected with central processing unit, data-carrier store, AD analog to digital converter, Electromagnetically vibrating pneumatic pump and power supply, the oxygen concentration sensor be connected with AD analog to digital converter, and be serially connected in the ICLC composition between central processing unit and power supply; It is characterized in that: between AD analog to digital converter and oxygen concentration sensor, be also serially connected with two-stage bandpass filtering amplifying circuit, described two-stage bandpass filtering amplifying circuit is then by the bandwidth-limited circuit be connected with oxygen concentration sensor, and the inclined value amplifying circuit be connected with bandwidth-limited circuit forms.
2. a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit according to claim 1, it is characterized in that, described bandwidth-limited circuit is by amplifier P1, triode VT6, negative pole is connected with the electrode input end of amplifier P1 after resistance R27, positive pole is in turn through polar capacitor C18 that resistance R25 is connected with the output terminal of amplifier P1 after diode D13 and resistance R26, negative pole is connected with the output terminal of amplifier P1, the polar capacitor C19 that positive pole is connected with the electrode input end of amplifier P1, one end is connected with the emitter of triode VT6, the resistance R28 that the other end is connected with the output terminal of amplifier P1, negative pole is connected with the output terminal of amplifier P1, the polar capacitor C20 that positive pole is connected with the base stage of triode VT6, and one end is connected with the collector of triode VT6, the resistance R29 that the emitter of the other end and triode VT6 forms bandwidth-limited circuit output terminal jointly forms, the negative pole of described polar capacitor C18 as bandwidth-limited circuit input end and be connected with oxygen concentration sensor, the negative input ground connection of described amplifier P1.
3. a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit according to claim 2, it is characterized in that, described inclined value amplifying circuit is by amplifier P2, triode VT5, N pole is connected with the emitter of triode VT6, the diode D14 that P pole is connected with the base stage of triode VT5 after resistance R31, P pole is connected with the P pole of diode D14 after resistance R30, the diode D15 that N pole is connected with the negative input of amplifier P2, positive pole is connected with the P pole of diode D15, the polar capacitor C22 that negative pole is connected with the output terminal of amplifier P2 after resistance R33, negative pole is connected with the collector of triode VT5, the polar capacitor C21 that positive pole is connected with the electrode input end of amplifier P2, and one end is connected with the electrode input end of amplifier P2, the resistance R32 that the other end is connected with the output terminal of amplifier P2 forms, the emitter of described triode VT5 is connected with the collector of triode VT6 after resistance R29, its grounded collector, the output terminal of described amplifier P2 is as the output terminal being partially worth amplifying circuit.
4. a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit according to claim 3, it is characterized in that, described ICLC is by transformer T, be arranged on the fuse FU on the non-same polarity of transformer T former limit telefault, be connected to the negative resistance oscillator circuits between the Same Name of Ends of the secondary inductance coil of transformer T and non-same polarity, input end is connected with the output terminal of negative resistance oscillator circuits, the load triggers circuit that its output terminal is connected with central processing unit, and the self-excitation buffer circuit composition be connected between the Same Name of Ends of former limit telefault of transformer T and load triggers circuit, described negative resistance oscillator circuits is by diode D5, the diode D8 that P pole is connected with the N pole of diode D5, N pole is connected with the P pole of diode D5 after diode D6 through diode D7 in turn forms, described diode D5 is connected with the Same Name of Ends of the secondary coil of transformer T with the tie point of diode D8, and diode D6 is then connected with the non-same polarity of the secondary coil of transformer T with the tie point of diode D7, tie point and the diode D8 of described diode D5 and diode D6 are all connected with load triggers circuit with the tie point of diode D7.
5. a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit according to claim 4, it is characterized in that, described self-excitation buffer circuit is by triode VT1, unidirectional transistor SCR, positive pole is connected with the base stage of triode VT1 after resistance R1, the polar capacitor C1 that negative pole is connected with the control end of unidirectional transistor SCR after resistance R2, positive pole is connected with the collector of triode VT1 after resistance R3, negative pole is in turn through polar capacitor C3 that resistance R7 is connected with the positive pole of unidirectional transistor SCR after resistance R6, P pole is connected with the emitter of triode VT1, N pole is in turn through diode D2 that resistance R5 is connected with the control end of unidirectional transistor SCR after resistance R4 and polar capacitor C2, positive pole is connected with the control end of unidirectional transistor SCR after diode D1, the polar capacitor C5 that negative pole is connected with load triggers circuit after resistance R8, and negative pole is connected with the Same Name of Ends of the primary coil of transformer T, the polar capacitor C4 that positive pole is connected with the tie point of resistance R7 with resistance R6 forms, the base stage of described triode VT1 is connected with the negative pole of unidirectional transistor SCR, and the negative pole of polar capacitor C1 then jointly forms the input end of ICLC with the non-same polarity of the primary coil of transformer T and is connected with power supply, the positive pole of described polar capacitor C4 is connected with load triggers circuit.
6. a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit according to claim 5, it is characterized in that, described load triggers circuit is by triode VT2, triode VT3, P pole is connected with the positive pole of polar capacitor C4, the diode D3 that N pole is connected with the base stage of triode VT2, negative pole is connected with the collector of triode VT3 after resistance R11, the polar capacitor C8 that positive pole is connected with the base stage of triode VT2 after resistance R9, positive pole is connected with the tie point of diode D5 with diode D6, negative pole is in turn through polar capacitor C7 that diode D4 is connected with the emitter of triode VT2 after resistance R10, positive pole is connected with the negative pole of polar capacitor C7 after resistance R12, the polar capacitor C6 that negative pole is connected with the collector of triode VT3 after resistance R14, and one end is connected with the emitter of triode VT3, the resistance R13 that the negative pole of the other end and polar capacitor C6 forms the output terminal of ICLC jointly forms, the base stage of described triode VT3 is connected with the tie point of diode D8 with diode D7, and the collector of described triode VT2 is then connected with the negative pole of polar capacitor C5 after resistance R8.
7. a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit according to claim 6, is characterized in that, described display is have the LCDs touching regulatory function.
8. a kind of intelligent aerator control system based on two-stage bandpass filtering amplifying circuit according to claim 7, it is characterized in that, described Electromagnetically vibrating pneumatic pump is super-silent YT-301 oxygen increasing pump.
CN201510920680.3A 2015-12-11 2015-12-11 Two-level band-pass filtering and amplifying circuit-based intelligent aerator control system Pending CN105373149A (en)

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