CN103034272B - Electricity intelligent measuring and controlling device - Google Patents

Abstract

The invention discloses an electricity intelligent measuring and controlling device. The electricity intelligent measuring and controlling device is characterized in that a switch power supply of a multi-circuit multi-isolation A/D (Alternating/Direct) double-supply composite transformer can use alternating current and direct current for supplying power, a multi-circuit multi-isolation coil winding is respectively coiled on two transformers by the composite transformer, defects existing in the past are overcome, an anti-interference measure is improved, the reliable and stable switch power supply is realized, one branch of a current detection double-circuit double alternating-current floating type amplifying circuit is used for amplifying a small current signal and increasing the accuracy of the small current signal, another branch of the current detection double-circuit double alternating-current floating type amplifying circuit is used for enlarging a using range and amplifying large current, a resistance voltage-reduction transformer isolation voltage detection floating type amplifying circuit is used for reducing the power and the size of the transformers by using the resistance voltage reduction, the transformers mainly take an isolation effect, an alternating-current signal is enabled to be in a forward direction by using the floating type amplifying circuits, and the alternating signal is easily input from an interface of a single chip microcomputer. The electricity intelligent measuring and controlling device disclosed by the invention is suitable for various intelligent protection and control devices.

Description

Electric intelligent measure and control device

Technical field

The present invention relates to power supply using electricity automation detection control, particularly electric intelligent measure and control device.

Background technology

Some power supply systems are still had to use outmoded superseded conventional electrical appliance at present, employing transformer pressure-reducing is isolated, existing problems are by the large heaviness of transformer pressure-reducing volume, and can only with connecting AC power input, useful Switching Power Supply interference free performance is poor, the too many coiling difficulty of Secondary Winding of conventional switching mode power supply transformer, affects complete machine stability, and the shortcoming such as volume is large, isolation effect is poor; Current sample detects mutual inductor poor linearity, single channel is amplified directly affects usable range, has a strong impact on control accuracy; In measure and control device voltage sample detect existing problems are poor linearity, ac current signal input single-chip microcomputer be difficult to process, have a strong impact on control accuracy.

Summary of the invention

The object of the invention is for above-mentioned defect, a kind of electric intelligent measure and control device is provided.Wherein multichannel many isolation composite transformer switching power circuit, can be used for alternating current-direct current two kinds of Power supplies, affect power good with previous switching mode power supply transformer multi-coil winding technique difficulty, now with composite transformer by multichannel many retarders winding respectively around on two transformers, overcome the defect in the past existed, improve interference protection measures, realize reliable and stable Switching Power Supply; Wherein current detecting two-way double interchange floating amplifying circuit, adopts the double amplification of two-way to be that a road is amplified small area analysis signal, improves small area analysis signal accuracy, and another road expands usable range and amplifies big current; Wherein resistance step-down transformer isolation voltage detects floating amplifying circuit, with resistance and transformer series, resistance step-down can reduce transformer efficiency and volume, and transformer mainly plays buffer action, exchanging floating amplification makes AC signal be operated in forward, and negative signal can not be made to enter single-chip microcomputer.

Technical scheme of the present invention is electric intelligent measure and control device, comprise multichannel many isolation composite transformer switching power circuit, current detecting two-way double interchange floating amplifying circuit, resistance step-down transformer isolation voltage detects floating amplifying circuit, to it is characterized in that in electric intelligent measure and control device that multichannel many isolation composite transformer switching power circuit adopts multichannel many isolation composite transformer and the special integrated package of Switching Power Supply and dual anti-interference choking coil, can be used for alternating current-direct current two kinds of Power supplies, current detecting two-way double interchange floating amplifying circuit, the double amplification of two-way is adopted to be that a road is amplified small area analysis signal, improve small area analysis signal accuracy, another road expands usable range and amplifies big current, resistance step-down transformer isolation voltage detects floating amplifying circuit, with resistance and transformer series, resistance step-down can reduce transformer efficiency and volume, transformer mainly plays buffer action, exchanging floating amplification makes AC signal be operated in forward, negative signal can not be made to enter single-chip microcomputer, particular circuit configurations is that in electric intelligent measure and control device, multichannel many isolation composite transformer switching power circuit is that A phase power supply A is connected the coil winding LT1 of anti-interference filter DL1 and the head of coil winding LT2 respectively with B phase power supply B, the head of the tail contact resistance DR0 of coil winding LT1 and the coil winding LT3 of capacitor DC1 and anti-interference filter DL2, the other end of resistance DR0 is connected the head of the coil winding LT4 of anti-interference filter DL2 and the tail of coil winding LT2 with the other end of capacitor DC1, the tail of coil winding LT3 connects the ac input end of capacitor DC2 and bridge rectifier DDB1, the tail of another ac input end of bridge rectifier DDB1 and the other end connecting coil winding L T4 of capacitor DC2, the positive output end of bridge rectifier DDB1 connects the positive pole of electrolytic condenser DC15 and the positive pole of transient suppressor DD1 and the tail of switching mode power supply transformer DT1 coil winding LT5, the negative pole of transient suppressor DD1 connects the negative pole of diode DD2, the head of the coil winding LT5 of switching mode power supply transformer DT1 connects the positive pole of diode DD2 and the D end of capacitor DC3 and the special integrated package DU1 of Switching Power Supply, the other end contact resistance DR1 of capacitor DC3, the other end of resistance DR1 connects rectifier power source common port VV0, bridge rectifier DDB1 negative output terminal is connected rectifier power source common port VV0 with electrolytic condenser DC15 negative pole together with the S end of the special integrated package DU1 of electrolytic condenser DC16 negative pole and Switching Power Supply, the head of the coil winding LT7 of switching mode power supply transformer DT1 connects the positive pole of diode DD3, the negative pole of diode DD3 connects collector and the capacitor DC4 and capacitor DC5 of photosensitive three poles of photoelectrical coupler DU2, capacitor DC4 is connected rectifier power source common port VV0 with the tail of the coil winding LT7 of switching mode power supply transformer DT1 with capacitor DC6 with the other end of capacitor DC5, the C end of the special integrated package DU1 of Switching Power Supply connects emitter and the resistance DR2 of phototriode in photoelectrical coupler DU2, the other end of resistance DR2 connects the positive pole of electrolytic condenser DC16, the head of the coil winding LT8 of switching mode power supply transformer DT1 connects the positive pole of two pole DD6, the tail of the coil winding LT8 of switching mode power supply transformer DT1 connects common port V0, the cathode connecting diode DD6 negative pole of light emitting diode and anti-interference filter DL3 and electrolytic condenser DC27 positive pole and resistance DR5 in photoelectrical coupler DU2, the other end of resistance DR5 connects negative pole and the resistance DR6 of light emitting diode in photoelectrical coupler DU2, the other end of anti-interference filter DL3 connects positive pole and the resistance DR7 and anti-interference filter DL4 of electrolytic condenser DC28 as positive supply VDD2, the other end of resistance DR6 connects negative pole and the capacitor DC7 of adjustable reference power supply DU3, the other end of capacitor DC7 is connected control pole and the resistance DR8 of adjustable reference power supply DU3 with the other end of resistance DR7, electrolytic condenser DC27 negative pole is together connected common port V0 with the other end of resistance DR8 with the positive pole of adjustable reference power supply DU3 with the other end of capacitor DC6 with the negative pole of electrolytic condenser DC28, the other end of anti-interference filter DL4 connects positive pole and the capacitor DC14 and resistance DR9 of electrolytic condenser DC29 as positive supply VDD1, the other end of resistance DR9 connects the negative pole adjustable reference power supply of adjustable reference power supply DU4 and the control pole of DU4 and the positive input terminal of operational amplifier DU7, the output terminal of the negative input end concatenation operation amplifier DU7 of operational amplifier DU7 is as positive supply VDD0, the other end of capacitor DC14 is connected common port V0 with the negative pole of electrolytic condenser DC29 together with the positive pole of adjustable reference power supply DU4, the head of the coil winding LT6 of switching mode power supply transformer DT1 connects the head of the positive pole of diode DD4 and the coil winding LT9 of switch transformer DT2, the negative pole of diode DD4 connects positive pole and the resistance DR3 of electrolytic condenser DC23, the other end of resistance DR3 is export positive supply VDD3 to connect the negative pole of capacitor DC12 and stabilivolt DD10 and the positive pole of electrolytic condenser DC24, the center head of the coil winding LT6 of switching mode power supply transformer DT1, the negative pole of electrolytic condenser DC23, the positive pole of electrolytic condenser DC25, the negative pole of electrolytic condenser DC24, the positive pole of electrolytic condenser DC26, the positive pole of stabilivolt DD10, the negative pole of stabilivolt DD11, the other end of capacitor DC12 is connected common port V0 together with capacitor DC13, the tail of the coil winding LT6 of switching mode power supply transformer DT1 connects the tail of the negative pole of diode DD5 and the coil winding LT9 of switch transformer DT2, the positive pole of diode DD5 connects negative pole and the resistance DR4 of electrolytic condenser DC25, the other end of resistance DR4 is export negative supply VCC to connect the negative pole of electrochemical capacitor DC26 and the positive pole of stabilivolt DD11 and the other end of capacitor DC13, the head of the coil winding LT10 of switching mode power supply transformer DT2 connects the positive pole of diode DD7, the negative pole of diode DD7 is the positive pole of the positive pole output connection electrolytic condenser DC17 of insulating power supply VD1, the tail of the coil winding LT10 of switching mode power supply transformer DT2 is the negative pole of the negative pole output connection electrolytic condenser DC17 of insulating power supply VD1, the head of the coil winding LT12 of switching mode power supply transformer DT2 connects the positive pole of diode DD8, the negative pole of diode DD8 connects the positive pole of electrolytic condenser DC18 and capacitor DC8 and integrated package of pressure-stabilizing DU5 input end, integrated package of pressure-stabilizing DU5 output terminal is the positive output end of insulating power supply VD2, the tail of the coil winding LT12 of switching mode power supply transformer DT2 is the negative pole of the negative output terminal connection electrolytic condenser DC18 of insulating power supply VD2, the other end of capacitor DC8, integrated package of pressure-stabilizing DU5 control end, the negative pole of electrolytic condenser DC19 and the other end of capacitor DC9, the head of the coil winding LT11 of switching mode power supply transformer DT2 connects the positive pole of diode DD9, the negative pole of diode DD9 connects positive pole and the anti-interference filter DL5 of electrolytic condenser DC20, the other end of anti-interference filter DL5 connects the positive pole of capacitor DC10 and electrolytic condenser DC21 and the input end of integrated package of pressure-stabilizing DU6, the output terminal of integrated package of pressure-stabilizing DU6 is the positive pole of the positive pole output connection capacitor DC11 and electrolytic condenser DC22 of insulating power supply VD3, the tail of the coil winding LT11 of switching mode power supply transformer DT2 is the negative pole of the negative output terminal connection electrolytic condenser DC20 of insulating power supply VD3, the other end of capacitor DC10, the negative pole of electrolytic condenser DC21, integrated package of pressure-stabilizing DU6 control end, the negative pole of electrolytic condenser DC22 and the other end of capacitor DC11.

Said electric intelligent measure and control device, the current detecting two-way double interchange floating amplifying circuit that it is characterized in that in electric intelligent measure and control device is the identical double amplifying circuits of current detecting two-way in three tunnels, by A phase current mutual inductor LA, B phase current mutual inductor LB, C phase current mutual inductor LC detects A phase power supply respectively, B phase power supply, the electric current of C phase power supply, A phase current signal one AI1 and A phase current signal two AI2 is exported respectively by the amplification of operational amplifier ZU1 and operational amplifier ZU4, B phase current signal one BI1 and B phase current signal two BI2 is exported by the amplification of operational amplifier ZU2 and operational amplifier ZU5, C phase current signal one CI1 and C phase current signal two CI2 is exported by the amplification of operational amplifier ZU3 and operational amplifier ZU6, specifically A phase current mutual inductor LA one end connects anti-interference power choke coil ZL1 and two-way transient suppressor ZV1 and resistance ZR22, the other end of anti-interference power choke coil ZL1 connects capacitor ZC1 and capacitor ZC2 and resistance ZR2 and operational amplifier ZU4 positive input terminal, the other end concatenation operation amplifier ZU1 positive input terminal of resistance ZR2, operational amplifier ZU1 negative input end contact resistance ZR3 and resistance ZR4, the other end of A phase current mutual inductor LA, the other end of two-way transient suppressor ZV1, the other end of capacitor ZC1, the other end of capacitor ZC2 is connected positive supply VDD0 with the other end of resistance ZR3, the other end concatenation operation amplifier ZU1 output terminal of resistance ZR4 and resistance ZR5, the other end of resistance ZR5 connects the positive pole of transient suppressor ZD1, capacitor ZC4, the positive pole of electrolytic condenser ZC19, the negative pole of diode ZD6 and A phase current signal one AI1, the negative pole of transient suppressor ZD1 connects VDD2, the other end of capacitor ZC4 is connected common port V0 with the negative pole of electrolytic condenser ZC19 with the negative pole of diode ZD6, operational amplifier ZU4 negative input end concatenation operation amplifier ZU4 output terminal and resistance ZR1, the other end of resistance ZR1 connects positive pole and A phase current signal two AI2 of capacitor ZC3 and electrolytic condenser ZC18, the other end of capacitor ZC3 is connected common port V0 with the negative pole of electrolytic condenser ZC18, B phase current mutual inductor LB one end connects anti-interference power choke coil ZL2 and two-way transient suppressor ZV2 and resistance ZR23, the other end of anti-interference power choke coil ZL2 connects capacitor ZC5 and capacitor ZC6 and resistance ZR7 and operational amplifier ZU5 positive input terminal, the other end concatenation operation amplifier ZU2 positive input terminal of resistance ZR7, operational amplifier ZU2 negative input end contact resistance ZR8 and resistance ZR9, the other end of B phase current mutual inductor LB, the other end of two-way transient suppressor ZV2, the other end of capacitor ZC5, the other end of capacitor ZC6 is connected positive supply VDD0 with the other end of resistance ZR8, the other end concatenation operation amplifier ZU2 output terminal of resistance ZR9 and resistance ZR10, the other end of resistance ZR10 connects the positive pole of transient suppressor ZD2, capacitor ZC8, the positive pole of electrochemical capacitor ZC21, the negative pole of diode ZD7 and B phase current signal one BI1, the negative pole of transient suppressor ZD2 connects VDD2, the other end of capacitor ZC8 is connected common port V0 with the negative pole of electrolytic condenser ZC21 with the positive pole of diode ZD7, operational amplifier ZU5 negative input end concatenation operation amplifier ZU5 output terminal and resistance ZR6, the other end of resistance ZR6 connects capacitor ZC7 and electrolytic condenser ZC20 positive pole and B phase current signal two BI2, the other end of capacitor ZC7 is connected common port V0 with the negative pole of electrolytic condenser ZC20, C phase current mutual inductor LC one end connects anti-interference power choke coil ZL3 and two-way transient suppressor ZV3 and resistance ZR24, the other end of anti-interference power choke coil ZL3 connects capacitor ZC9 and capacitor ZC10 and resistance ZR12 and operational amplifier ZU6 positive input terminal, the other end concatenation operation amplifier ZU3 positive input terminal of resistance ZR12, operational amplifier ZU3 negative input end contact resistance ZR13 and resistance ZR14, the other end of C phase current mutual inductor LC, the other end of two-way transient suppressor ZV3, the other end of capacitor ZC9, the other end of capacitor ZC10 is connected positive supply VDD0 with the other end of resistance ZR13, the other end concatenation operation amplifier ZU3 output terminal of resistance ZR14 and resistance ZR15, the other end of resistance ZR15 connects the positive pole of transient suppressor ZD3, capacitor ZC12, the positive pole of electrochemical capacitor ZC23, the negative pole of diode ZD8 and C phase current signal one CI1, the negative pole of transient suppressor ZD3 connects VDD2, the other end of capacitor ZC12 is connected common port V0 with the negative pole of electrolytic condenser ZC23 with the positive pole of diode ZD8, operational amplifier ZU6 negative input end concatenation operation amplifier ZU6 output terminal and resistance ZR11, the other end of resistance ZR11 connects positive pole and C phase current signal two CI2 of capacitor ZC11 and electrolytic condenser ZC22, the other end of capacitor ZC11 is connected common port V0 with the negative pole of electrolytic condenser ZC22, ground current mutual inductor LN one end connects anti-interference power choke coil ZL4 and two-way transient suppressor ZV4, the other end of anti-interference power choke coil ZL4 connects capacitor ZC13 and capacitor ZC14 and resistance ZR17 and resistance ZR16, the other end concatenation operation amplifier ZU7 positive input terminal of resistance ZR17, operational amplifier ZU7 negative input end contact resistance ZR18 and resistance ZR19, the other end contact resistance ZR21 of ground current mutual inductor LN, the other end of two-way transient suppressor ZV4 connects the other end of capacitor ZC13, the other end of capacitor ZC14 is connected positive supply VDD0 with the other end of resistance ZR18, the other end concatenation operation amplifier ZU7 output terminal of resistance ZR19 and resistance ZR20, the other end of resistance ZR20 connects the positive pole of transient suppressor ZD4, capacitor ZC16, the positive pole of electrochemical capacitor ZC25, the negative pole of diode ZD9 and ground current signal one NI1, the negative pole of transient suppressor ZD4 connects VDD2, the other end of capacitor ZC16 is connected common port V0 with the negative pole of electrolytic condenser ZC25 with the positive pole of diode ZD9, the other end of resistance ZR16 connects positive pole and ground current signal two NI2 of capacitor ZC15 and electrolytic condenser ZC24, the another end of capacitor ZC15 is connected common port V0 with the negative pole of electrolytic condenser ZC24, the other end of resistance ZR21, the other end of resistance ZR22, the positive input terminal of other end concatenation operation amplifier ZU8 together with the other end of resistance ZR24 of resistance ZR23 and resistance ZR25, the output terminal of the other end concatenation operation amplifier ZU8 of resistance ZR25 and resistance ZR27, the other end of resistance ZR26 connects positive supply VDD0, the other end of resistance ZR27 connects the positive pole of transient suppressor ZD5, capacitor ZC17, the positive pole of electrochemical capacitor ZC26, the negative pole of diode ZD10 and ground current signal one NI3, the negative pole of transient suppressor ZD5 connects VDD2, the other end of capacitor ZC17 is connected common port V0 with the negative pole of electrolytic condenser ZC26 with the positive pole of diode 10.

Said electric intelligent measure and control device, it is characterized in that resistance step-down transformer isolation voltage in electric intelligent measure and control device detects floating amplifying circuit is the identical voltage detecting amplifying circuits in three tunnels, respectively by resistance UR1 and resistance UR2 and resistance UR3 step-down, connect isolating transformer UTA armature winding tail and isolating transformer UTB armature winding tail and isolating transformer UTC armature winding tail respectively again, isolating transformer UTA armature winding head and isolating transformer UTB armature winding head and isolating transformer UTC armature winding head and ground connection zero power supply N connect, isolating transformer UTA secondary winding head connects two-way transient suppressor UV1 and resistance UR4 and resistance UR5, the positive input terminal of the other end concatenation operation amplifier UU1 of resistance UR5, the negative input end contact resistance UR6 of operational amplifier UU1 and resistance UR7, isolating transformer UTA secondary winding tail, the other end of two-way transient suppressor UV1, the other end of resistance UR4, the other end of resistance U6 connects positive supply VDD0 together, the other end concatenation operation amplifier UU1 output terminal of resistance R7 and resistance UR8, the other end of resistance UR8 connects positive pole and the capacitor UC4 and A phase voltage signal AV of electrolytic condenser UC1, contact resistance UR19 and resistance UR25 simultaneously, the negative pole of electrolytic condenser UC1 is connected common port V0 with the other end of capacitor UC4, isolating transformer UTB secondary winding head connects two-way transient suppressor UV2 and resistance UR9 and resistance UR10, the positive input terminal of the other end concatenation operation amplifier UU2 of resistance UR10, the negative input end contact resistance UR11 of operational amplifier UU2 and resistance UR12, isolating transformer UTB secondary winding tail, the other end of two-way transient suppressor UV2, the other end of resistance UR9, the other end of resistance U11 connects positive supply VDD0 together, the other end concatenation operation amplifier UU2 output terminal of resistance R12 and resistance UR13, the other end of resistance UR13 connects positive pole and the capacitor UC5 and B phase voltage signal BV of electrolytic condenser UC2, contact resistance UR22 and resistance UR28 simultaneously, the negative pole of electrolytic condenser UC2 is connected common port V0 with the other end of capacitor UC5, isolating transformer UTC secondary winding head connects two-way transient suppressor UV3 and resistance UR14 and resistance UR15, the positive input terminal of the other end concatenation operation amplifier UU3 of resistance UR15, the negative input end contact resistance UR16 of operational amplifier UU3 and resistance UR17, , isolating transformer UTC secondary winding tail, the other end of two-way transient suppressor UV3, the other end of resistance UR14, the other end of resistance U16 connects positive supply VDD0 together, the other end concatenation operation amplifier UU3 output terminal of resistance R17 and resistance UR18, the other end of resistance UR18 connects positive pole and the capacitor UC6 and C phase voltage signal CV of electrolytic condenser UC3, contact resistance UR30 simultaneously, the negative pole of electrolytic condenser UC3 is connected common port V0 with the other end of capacitor UC6, the other end contact resistance UR20 of resistance UR19 and the positive input terminal of operational amplifier UU4, the negative input end of operational amplifier UU4 connects positive supply VDD0, the output terminal contact resistance UR21 of operational amplifier UU4 and the other end of resistance UR20 and electric capacity UC7 and A phase voltage compare end AVB, the other end of resistance UR21 connects positive supply VDD2, the other end of electric capacity UC7 connects common port V0, the other end contact resistance UR23 of resistance UR22 and the positive input terminal of operational amplifier UU5, the negative input end of operational amplifier UU5 connects positive supply VDD0, the output terminal contact resistance UR24 of operational amplifier UU5 and the other end of resistance UR23 and electric capacity UC8 and B phase voltage compare end BVB, the other end of resistance UR24 connects positive supply VDD2, the other end of electric capacity UC8 connects common port V0, the other end contact resistance UR26 of resistance UR25 and the positive input terminal of operational amplifier UU6, the negative input end of operational amplifier UU6 connects positive supply VDD0, the P1 end of the output terminal contact resistance UR27 of operational amplifier UU6 and the other end of resistance UR26 and electric capacity UC9 and d type flip flop UU8, the other end of resistance UR27 connects positive supply VDD2, the other end of electric capacity UC9 connects common port V0, the other end contact resistance UR29 of resistance UR28 and the positive input terminal of operational amplifier UU7, the other end of the negative input end contact resistance UR30 of operational amplifier UU7, the P2 end of the output terminal contact resistance UR31 of operational amplifier UU7 and the other end of resistance UR29 and electric capacity UC10 and d type flip flop UU9, the other end of resistance UR31 connects positive supply VDD2, the other end of electric capacity UC10 connects common port V0, the D1 end of d type flip flop UU8 is connected positive supply VDD2 with the D2 end of d type flip flop UU9, the S1 end of d type flip flop UU8 is connected common port V0 with the S2 end of d type flip flop UU9, the Q1 end of d type flip flop UU8 and the R2 end of d type flip flop UU9, the R1 end of d type flip flop UU8 and d type flip flop UU9 end connects the Q2 end connection BC phase voltage comparison signal end BCVB that A phase current compares end AIB, d type flip flop UU9.

The present invention is multichannel multi-separation switch power supply; circuit stability is good; there is multi-functional, multi-usage; the double amplification of two-way is that a road is amplified small area analysis signal; improve small area analysis signal accuracy; another road expands usable range and amplifies big current; resistance step-down can reduce transformer efficiency and volume; transformer mainly plays buffer action; exchanging floating amplifying circuit makes AC signal be operated in forward; negative signal can not be made to enter eight single-chip microcomputers, and the present invention is applicable to various intelligent protection and control device, particularly electric intelligent measure and control device.

Accompanying drawing explanation

Fig. 1 multichannel many isolation composite transformer switching power circuit figure

Fig. 2 current detecting two-way double interchange floating amplification circuit diagram

Fig. 3 resistance step-down transformer isolation voltage detects floating amplification circuit diagram

A A phase power supply in 1 in figure, B B phase power supply, DB Bao Xian Silk, DL1-DL5 anti-interference filter, DT1-DT2 switching mode power supply transformer, LT1-LT12 coil winding, DDB1 bridge rectifier, DD1 transient suppressor, DD2-DD9 diode, DD10-DD11 voltage stabilizing diode, the special integrated package of DU1 Switching Power Supply, DU2 photoelectrical coupler, DU3-DU4 adjustable reference power supply, DU5-DU6 integrated package of pressure-stabilizing, DU7 operational amplifier, DR0-DR9 resistance, DC1-DC14 capacitor, DC15-DC29 electrolytic condenser, VDD0-VDD3 positive supply, VCC negative supply, V0 common port, VD1-VD3 insulating power supply, VV0 rectifier power source common port.

A A phase power supply in Fig. 2, B B phase power supply, C C phase power supply, LA A phase current mutual inductor, LB B phase current mutual inductor, LC C phase current mutual inductor, LN ground current mutual inductor, the anti-interference power choke coil of ZL1-ZL4, the two-way transient suppressor of ZV1-ZV4, ZU1-ZU8 operational amplifier, ZR1-ZR27 resistance, ZC1-ZC17 capacitor, ZC18-ZC26 electrolytic condenser, ZD1-ZD5 transient suppressor, ZD6-ZD10 diode, V0 common port, AI1 A phase current signal one, AI2 A phase current signal two, BI1 B phase current signal one, BI2 B phase current signal two, CI1 C phase current signal one, CI2 C phase current signal two, NI1 ground current signal one, NI2 ground current signal two, NI3 phase-sequence current signal.

A A phase power supply in Fig. 3, B B phase power supply, C C phase power supply, N ground connection zero power supply, the isolated transformer of UTA A, the isolated transformer of UTB B, the isolated transformer of UTA C, UR1-UR30 resistance, UC1-UC3 electrolytic condenser, UC4-UC10 capacitor, the two-way transient suppressor of UV1-UV3, UU1-UU7 operational amplifier, UU8-UU9 D touches puts device, V0 common port, VDD0 positive supply, VDD2 positive supply, AV A phase voltage signal, BV B phase voltage signal, CV C phase voltage signal, AVB A phase voltage comparison signal, BVB B phase voltage comparison signal, BCVB BC phase voltage comparison signal, AIB A phase current compares.

Embodiment

Fig. 1 is that straight duplicate supply composite transformer switching power circuit figure is handed in the many isolation of multichannel, adopt multichannel many isolation composite transformer and the special integrated package of Switching Power Supply and dual anti-interference choking coil, can be used for alternating current-direct current two kinds power supply, principle of work is A phase power supply A and B phase power supply B respectively through anti-interference filter DL1, anti-interferencely grip filter D L2 and resistance DR0, capacitor DC1, anti-jamming circuit that capacitor DC2 forms carries out filtering, bridge rectifier DDB1 rectification; Electrolytic condenser DC15 filtering, form Switching Power Supply by switching mode power supply transformer DT1, the special integrated package DU1 of Switching Power Supply, capacitor etc. and shake control, sample feedback by adjustable reference power supply DU3 and make Switching Power Supply steady operation through photoelectrical coupler DU2 gauge tap power supply special integrated package DU1 and switching mode power supply transformer DT1; Positive supply VDD2 exports as positive supply VDD1 through anti-interference filter DL4 and capacitor DC14 and electrolytic condenser DC29 filtering; The stabilized voltage supply again voltage stabilizing output high precision positive supply VDD0 of positive supply VDD1 again through being made up of adjustable reference power supply DU4 and operational amplifier DU7; The coil winding LT6 of switching mode power supply transformer DT1 exports a point two-way, one tunnel is through diode DD4 and diode DD5 rectification, through capacitor DC12, capacitor DC13, electrolytic condenser DC23, electrolytic condenser DC24, electrolytic condenser DC25, electrolytic condenser DC26, resistance DR3 and resistance DR4 filtering, through stabilivolt DD10 and stabilivolt DD11 voltage stabilizing, export positive supply VDD3 and negative supply VCC; Three road insulating power supplies are divided through switching mode power supply transformer DT2 in another road that the coil winding LT6 of switching mode power supply transformer DT1 exports, and the first via is that coil winding LT10 outlet is through diode DD7 and electrolytic condenser DC17 rectifying and wave-filtering output isolated power supply VD1; Second tunnel be coil winding LT12 outlet through diode DD8, capacitor DC8 and electrolytic condenser DC18 rectifying and wave-filtering, again through integrated package of pressure-stabilizing DU5, capacitor DC9 and electrolytic condenser DC19 voltage regulation filtering output isolated power supply VD2; 3rd tunnel be coil winding LT11 outlet through diode DD9, anti-interference filter, capacitor DC10, electrolytic condenser DC20 and electrolytic condenser DC21 rectifying and wave-filtering, again through integrated package of pressure-stabilizing DU5, capacitor DC11, electrolytic condenser DC22 and voltage regulation filtering output isolated power supply VD23.Embodiment connects with reference to Fig. 1 circuit theory diagrams, note anti-interference filter DL1, anti-interference filter DL2, switching mode power supply transformer DT1 and switching mode power supply transformer DT2 coil winding LT1, coil winding LT2, coil winding LT3, coil winding LT4, coil winding LT5, coil winding LT6, coil winding LT7, coil winding LT8, coil winding LT9, coil winding LT10, being end-to-end of coil winding LT11 and coil winding LT12 must be correct, each coil winding considers winding coil footpath according to the working current of oneself.Insulating power supply VD1, insulating power supply VD2 must not be connected with common port V0 with the negative output terminal of insulating power supply VD3, also must not be connected with rectifier power source common port VV0, and common port V0 also must not be connected with rectifier power source common port VV0.

Fig. 2 is your schematic diagram of current detecting two-way double interchange floating amplifying circuit, principle of work is by A phase current mutual inductor LA, B phase current mutual inductor LB, C phase current mutual inductor LC detects A phase power supply respectively, B phase power supply, the electric current of C phase power supply, amplified by operational amplifier ZU1 and operational amplifier ZU4 respectively and export A phase current signal one AI1 and A phase current signal two AI2, defeated B phase current signal one BI1 and B phase current signal two BI2 is amplified by operational amplifier ZU2 and operational amplifier ZU5, amplified by operational amplifier ZU3 and operational amplifier ZU6 and export C phase current signal one CI1 and C phase current signal two CI2, detect electric leakage or ground current by ground current mutual inductor LN, amplified by operational amplifier ZU7 and export ground current signal one NI1 and ground current signal two NI2, amplified by operational amplifier ZU8 and export phase-sequence current signal one NI3.Embodiment is that the identical double amplifying circuit of current detecting two-way in three tunnels is by A phase current mutual inductor LA, B phase current mutual inductor LB, C phase current mutual inductor LC detects A phase power supply respectively, B phase power supply, the electric current of C phase power supply, amplified by operational amplifier ZU1 and operational amplifier ZU4 respectively and export A phase current signal one AI1 and A phase current signal two AI2, amplified by operational amplifier ZU2 and operational amplifier ZU5 and export B phase current signal one BI1 and B phase current signal two BI2, amplified by operational amplifier ZU3 and operational amplifier ZU6 and export C phase current signal one CI1 and C phase current signal two CI2, specifically A phase current mutual inductor LA one end connects anti-interference power choke coil ZL1 and two-way transient suppressor ZV1 and resistance ZR22, the other end of anti-interference power choke coil ZL1 connects capacitor ZC1 and capacitor ZC2 and resistance ZR2 and operational amplifier ZU4 positive input terminal, the other end concatenation operation amplifier ZU1 positive input terminal of resistance ZR2, operational amplifier ZU1 negative input end contact resistance ZR3 and resistance ZR4, the other end of A phase current mutual inductor LA, the other end of two-way transient suppressor ZV1, the other end of capacitor ZC1, the other end of capacitor ZC2 is connected positive supply VDD0 with the other end of resistance ZR3, the other end concatenation operation amplifier ZU1 output terminal of resistance ZR4 and resistance ZR5, the other end of resistance ZR5 connects the positive pole of transient suppressor ZD1, capacitor ZC4, the positive pole of electrolytic condenser ZC19, the negative pole of diode ZD6 and A phase current signal one AI1, the negative pole of transient suppressor ZD1 connects VDD2, the other end of capacitor ZC4 is connected common port V0 with the negative pole of electrolytic condenser ZC19 with the positive pole of diode ZD6, operational amplifier ZU4 negative input end concatenation operation amplifier ZU4 output terminal and resistance ZR1, the other end of resistance ZR1 connects positive pole and A phase current signal two AI2 of capacitor ZC3 and electrolytic condenser ZC18, the other end of capacitor ZC3 is connected common port V0 with the negative pole of electrolytic condenser ZC18, B phase current mutual inductor LB one end connects anti-interference power choke coil ZL2 and two-way transient suppressor ZV2 and resistance ZR23, the other end of anti-interference power choke coil ZL2 connects capacitor ZC5 and capacitor ZC6 and resistance ZR7 and operational amplifier ZU5 positive input terminal, the other end concatenation operation amplifier ZU2 positive input terminal of resistance ZR7, operational amplifier ZU2 negative input end contact resistance ZR8 and resistance ZR9, the other end of B phase current mutual inductor LB, the other end of two-way transient suppressor ZV2, the other end of capacitor ZC5, the other end of capacitor ZC6 is connected positive supply VDD0 with the other end of resistance ZR8, the other end concatenation operation amplifier ZU2 output terminal of resistance ZR9 and resistance ZR10, the other end of resistance ZR10 connects the positive pole of transient suppressor ZD2, capacitor ZC8, the positive pole of electrochemical capacitor ZC21, the negative pole of diode ZD7 and B phase current signal one BI1, the negative pole of transient suppressor ZD2 connects VDD2, the other end of capacitor ZC8 is connected common port V0 with the negative pole of electrolytic condenser ZC21 with the positive pole of diode ZD7, operational amplifier ZU5 negative input end concatenation operation amplifier ZU5 output terminal and resistance ZR6, the other end of resistance ZR6 connects capacitor ZC7 and electrolytic condenser ZC20 positive pole and B phase current signal two BI2, the other end of capacitor ZC7 is connected common port V0 with the negative pole of electrolytic condenser ZC20, C phase current mutual inductor LC one end connects anti-interference power choke coil ZL3 and two-way transient suppressor ZV3 and resistance ZR24, the other end of anti-interference power choke coil ZL3 connects capacitor ZC9 and capacitor ZC10 and resistance ZR12 and operational amplifier ZU6 positive input terminal, the other end concatenation operation amplifier ZU3 positive input terminal of resistance ZR12, operational amplifier ZU3 negative input end contact resistance ZR13 and resistance ZR14, the other end of C phase current mutual inductor LC, the other end of two-way transient suppressor ZV3, the other end of capacitor ZC9, the other end of capacitor ZC10 is connected positive supply VDD0 with the other end of resistance ZR13, the other end concatenation operation amplifier ZU3 output terminal of resistance ZR14 and resistance ZR15, the other end of resistance ZR15 connects the positive pole of transient suppressor ZD3, capacitor ZC12, the positive pole of electrochemical capacitor ZC23, the negative pole of diode ZD8 and C phase current signal one CI1, the negative pole of transient suppressor ZD3 connects VDD2, the other end of capacitor ZC12 is connected common port V0 with the negative pole of electrolytic condenser ZC23 with the positive pole of diode ZD8, operational amplifier ZU6 negative input end concatenation operation amplifier ZU6 output terminal and resistance ZR11, the other end of resistance ZR11 connects positive pole and C phase current signal two CI2 of capacitor ZC11 and electrolytic condenser ZC22, the another end of capacitor ZC11 is connected common port V0 with the other end of electrolytic condenser ZC22, ground current mutual inductor LN one end connects anti-interference power choke coil ZL4 and two-way transient suppressor ZV4, the other end of anti-interference power choke coil ZL4 connects capacitor ZC13 and capacitor ZC104 and resistance ZR17 and resistance ZR16, the other end concatenation operation amplifier ZU7 positive input terminal of resistance ZR17, operational amplifier ZU7 negative input end contact resistance ZR18 and resistance ZR19, the other end contact resistance ZR21 of ground current mutual inductor LCN, the other end of two-way transient suppressor ZV4, connect the other end of capacitor ZC13, the other end of capacitor ZC14 is connected positive supply VDD0 with the other end of resistance ZR18, the other end concatenation operation amplifier ZU7 output terminal of resistance ZR19 and resistance ZR20, the other end of resistance ZR20 connects the positive pole of transient suppressor ZD4, capacitor ZC16, the positive pole of electrochemical capacitor ZC25, the negative pole of diode ZD9 and ground current signal one NI1, the negative pole of transient suppressor ZD4 connects VDD2, the other end of capacitor ZC16 is connected common port V0 with the negative pole of electrolytic condenser ZC25 with the positive pole of diode ZD9, the other end of resistance ZR16 connects positive pole and ground current signal two NI2 of capacitor ZC15 and electrolytic condenser ZC24, the another end of capacitor ZC15 is connected common port V0 with the other end of electrolytic condenser ZC24, the other end of resistance ZR21, the other end of resistance ZR22, the positive input terminal of other end concatenation operation amplifier ZU8 together with the other end of resistance ZR24 of resistance ZR23 and resistance ZR25, the output terminal of the other end concatenation operation amplifier ZU8 of resistance ZR25 and resistance ZR27, the other end of resistance ZR26 connects positive supply VDD0, the other end of resistance ZR27 connects the positive pole of transient suppressor ZD5, capacitor ZC17, the positive pole of electrochemical capacitor ZC26, the negative pole of diode ZD10 and ground current signal one NI3, the negative pole of transient suppressor ZD4 connects VDD2, the other end of capacitor ZC17 is connected common port V0 with the negative pole of electrolytic condenser ZC26 with the positive pole of diode 10.

Fig. 3 is that resistance step-down transformer isolation voltage detects floating amplifying circuit schematic diagram, principle of work is that power detection signal is sampled through resistance UR1 and resistance UR2 and electric UR3 step-down by three-phase supply, three-phase voltage signal one tunnel being isolated the floating amplifying circuit amplification output formed through operational amplifier by isolating transformer UTA and isolating transformer UTB and isolating transformer UTC directly enters single-chip microcomputer, and the comparison signal that the comparator circuit that another road forms via operational amplifier and d type flip flop exports enters single-chip microcomputer again.Embodiment is that the identical voltage detecting amplifying circuit in three tunnels is respectively by resistance UR1 and resistance UR2 and resistance UR3 step-down, connect isolating transformer UTA armature winding tail and isolating transformer UTB armature winding tail and isolating transformer UTC armature winding tail respectively again, isolating transformer UTA armature winding head and isolating transformer UTB armature winding head and isolating transformer UTC armature winding head and ground connection zero power supply N connect, isolating transformer UTA secondary winding head connects two-way transient suppressor UV1 and resistance UR4 and resistance UR5, the positive input terminal of the other end concatenation operation amplifier UU1 of resistance UR5, the negative input end contact resistance UR6 of operational amplifier UU1 and resistance UR7, isolating transformer UTA secondary winding tail, the other end of two-way transient suppressor UV1, the other end of resistance UR4, the other end of resistance U6 connects positive supply VDD0 together, the other end concatenation operation amplifier UU1 output terminal of resistance R7 and resistance UR8, the other end of resistance UR8 connects positive pole and the capacitor UC4 and A phase voltage signal AV of electrolytic condenser UC1, contact resistance UR19 and resistance UR25 simultaneously, the negative pole of electrolytic condenser UC1 is connected common port V0 with the other end of capacitor UC4, isolating transformer UTB secondary winding head connects two-way transient suppressor UV2 and resistance UR9 and resistance UR10, the positive input terminal of the other end concatenation operation amplifier UU2 of resistance UR10, the negative input end contact resistance UR11 of operational amplifier UU2 and resistance UR12, isolating transformer UTB secondary winding tail, the other end of two-way transient suppressor UV2, the other end of resistance UR9, the other end of resistance U11 connects positive supply VDD0 together, the other end concatenation operation amplifier UU2 output terminal of resistance R12 and resistance UR13, the other end of resistance UR13 connects positive pole and the capacitor UC5 and B phase voltage signal BV of electrolytic condenser UC2, contact resistance UR22 and resistance UR28 simultaneously, the negative pole of electrolytic condenser UC2 is connected common port V0 with the other end of capacitor UC5, isolating transformer UTC secondary winding head connects two-way transient suppressor UV3 and resistance UR14 and resistance UR15, the positive input terminal of the other end concatenation operation amplifier UU3 of resistance UR15, the negative input end contact resistance UR16 of operational amplifier UU3 and resistance UR17, , isolating transformer UTC secondary winding tail, the other end of two-way transient suppressor UV3, the other end of resistance UR14, the other end of resistance U16 connects positive supply VDD0 together, the other end concatenation operation amplifier UU3 output terminal of resistance R17 and resistance UR18, the other end of resistance UR18 connects positive pole and the capacitor UC6 and C phase voltage signal CV of electrolytic condenser UC3, contact resistance UR30 simultaneously, the negative pole of electrolytic condenser UC3 is connected common port V0 with the other end of capacitor UC6, the other end contact resistance UR20 of resistance UR19 and the positive input terminal of operational amplifier UU4, the negative input end of operational amplifier UU4 connects positive supply VDD0, the output terminal contact resistance UR21 of operational amplifier UU4 and the other end of resistance UR20 and electric capacity UC7 and A phase voltage compare end AVB, the other end of resistance UR21 connects positive supply VDD2, the other end of electric capacity UC7 connects common port V0, the other end contact resistance UR23 of resistance UR22 and the positive input terminal of operational amplifier UU5, the negative input end of operational amplifier UU5 connects positive supply VDD0, the output terminal contact resistance UR24 of operational amplifier UU5 and the other end of resistance UR23 and electric capacity UC8 and B phase voltage compare end BVB, the other end of resistance UR24 connects positive supply VDD2, the other end of electric capacity UC8 connects common port V0, the other end contact resistance UR26 of resistance UR25 and the positive input terminal of operational amplifier UU6, the negative input end of operational amplifier UU6 connects positive supply VDD0, the P1 end of the output terminal contact resistance UR27 of operational amplifier UU6 and the other end of resistance UR26 and electric capacity UC9 and d type flip flop UU8, the other end of resistance UR27 connects positive supply VDD2, the other end of electric capacity UC9 connects common port V0, the other end contact resistance UR29 of resistance UR28 and the positive input terminal of operational amplifier UU7, the other end of the negative input end contact resistance UR30 of operational amplifier UU7, the P2 end of the output terminal contact resistance U R31 of operational amplifier UU7 and the other end of resistance UR29 and electric capacity UC10 and d type flip flop UU9, the other end of resistance UR31 connects positive supply VDD2, the other end of electric capacity UC10 connects common port V0, the D1 end of d type flip flop UU8 is connected positive supply VDD2 with the D2 end of d type flip flop UU9, the S1 end of d type flip flop UU8 is connected common port V0 with the S2 end of d type flip flop UU9, the Q1 end of d type flip flop UU8 and the R2 end of d type flip flop UU9, the R1 end of d type flip flop UU8 and d type flip flop UU9 end connects the Q2 end connection BC phase voltage comparison signal end BCVB that A phase current compares end AIB, d type flip flop UU9.

Claims (3)

1. electric intelligent measure and control device, comprise multichannel many isolation composite transformer switching power circuit, current detecting two-way double interchange floating amplifying circuit, resistance step-down transformer isolation voltage detects floating amplifying circuit, to it is characterized in that in electric intelligent measure and control device that multichannel many isolation composite transformer switching power circuit adopts multichannel many isolation composite transformer and the special integrated package of Switching Power Supply and dual anti-interference choking coil, can be used for alternating current-direct current two kinds of Power supplies, current detecting two-way double interchange floating amplifying circuit, the double amplification of two-way is adopted to be that a road is amplified small area analysis signal, improve small area analysis signal accuracy, another road expands usable range and amplifies big current, resistance step-down transformer isolation voltage detects floating amplifying circuit, with resistance and transformer series, resistance step-down can reduce transformer efficiency and volume, transformer mainly plays buffer action, exchanging floating amplification makes AC signal be operated in forward, negative signal can not be made to enter single-chip microcomputer, particular circuit configurations is that in electric intelligent measure and control device, multichannel many isolation composite transformer switching power circuit is that A phase power supply A is connected the coil winding LT1 of anti-interference filter DL1 and the head of coil winding LT2 respectively with B phase power supply B, the head of the tail contact resistance DR0 of coil winding LT1 and the coil winding LT3 of capacitor DC1 and anti-interference filter DL2, the other end of resistance DR0 is connected the head of the coil winding LT4 of anti-interference filter DL2 and the tail of coil winding LT2 with the other end of capacitor DC1, the tail of coil winding LT3 connects the ac input end of capacitor DC2 and bridge rectifier DDB1, the tail of another ac input end of bridge rectifier DDB1 and the other end connecting coil winding L T4 of capacitor DC2, the positive output end of bridge rectifier DDB1 connects the positive pole of electrolytic condenser DC15 and the positive pole of transient suppressor DD1 and the tail of switching mode power supply transformer DT1 coil winding LT5, the negative pole of transient suppressor DD1 connects the negative pole of diode DD2, the head of the coil winding LT5 of switching mode power supply transformer DT1 connects the positive pole of diode DD2 and the D end of capacitor DC3 and the special integrated package DU1 of Switching Power Supply, the other end contact resistance DR1 of capacitor DC3, the other end of resistance DR1 connects rectifier power source common port VV0, bridge rectifier DDB1 negative output terminal is connected rectifier power source common port VV0 with electrolytic condenser DC15 negative pole together with the S end of the special integrated package DU1 of electrolytic condenser DC16 negative pole and Switching Power Supply, the head of the coil winding LT7 of switching mode power supply transformer DT1 connects the positive pole of diode DD3, the negative pole of diode DD3 connects collector and the capacitor DC4 and capacitor DC5 of photosensitive three poles of photoelectrical coupler DU2, capacitor DC4 is connected rectifier power source common port VV0 with the tail of the coil winding LT7 of switching mode power supply transformer DT1 with capacitor DC6 with the other end of capacitor DC5, the C end of the special integrated package DU1 of Switching Power Supply connects emitter and the resistance DR2 of phototriode in photoelectrical coupler DU2, the other end of resistance DR2 connects the positive pole of electrolytic condenser DC16, the head of the coil winding LT8 of switching mode power supply transformer DT1 connects the positive pole of two pole DD6, the tail of the coil winding LT8 of switching mode power supply transformer DT1 connects common port V0, the cathode connecting diode DD6 negative pole of light emitting diode and anti-interference filter DL3 and electrolytic condenser DC27 positive pole and resistance DR5 in photoelectrical coupler DU2, the other end of resistance DR5 connects negative pole and the resistance DR6 of light emitting diode in photoelectrical coupler DU2, the other end of anti-interference filter DL3 connects positive pole and the resistance DR7 and anti-interference filter DL4 of electrolytic condenser DC28 as positive supply VDD2, the other end of resistance DR6 connects negative pole and the capacitor DC7 of adjustable reference power supply DU3, the other end of capacitor DC7 is connected control pole and the resistance DR8 of adjustable reference power supply DU3 with the other end of resistance DR7, electrolytic condenser DC27 negative pole is together connected common port V0 with the other end of resistance DR8 with the positive pole of adjustable reference power supply DU3 with the other end of capacitor DC6 with the negative pole of electrolytic condenser DC28, the other end of anti-interference filter DL4 connects positive pole and the capacitor DC14 and resistance DR9 of electrolytic condenser DC29 as positive supply VDD1, the other end of resistance DR9 connects the negative pole of adjustable reference power supply DU4 and the control pole of adjustable reference power supply DU4 and the positive input terminal of operational amplifier DU7, the output terminal of the negative input end concatenation operation amplifier DU7 of operational amplifier DU7 is as positive supply VDD0, the other end of capacitor DC14 is connected common port V0 with the negative pole of electrolytic condenser DC29 together with the positive pole of adjustable reference power supply DU4, the head of the coil winding LT6 of switching mode power supply transformer DT1 connects the head of the positive pole of diode DD4 and the coil winding LT9 of switch transformer DT2, the negative pole of diode DD4 connects positive pole and the resistance DR3 of electrolytic condenser DC23, the other end of resistance DR3 is export positive supply VDD3 to connect the negative pole of capacitor DC12 and stabilivolt DD10 and the positive pole of electrolytic condenser DC24, the center head of the coil winding LT6 of switching mode power supply transformer DT1, the negative pole of electrolytic condenser DC23, the positive pole of electrolytic condenser DC25, the negative pole of electrolytic condenser DC24, the positive pole of electrolytic condenser DC26, the positive pole of stabilivolt DD10, the negative pole of stabilivolt DD11, the other end of capacitor DC12 is connected common port V0 together with capacitor DC13, the tail of the coil winding LT6 of switching mode power supply transformer DT1 connects the tail of the negative pole of diode DD5 and the coil winding LT9 of switch transformer DT2, the positive pole of diode DD5 connects negative pole and the resistance DR4 of electrolytic condenser DC25, the other end of resistance DR4 is export negative supply VCC to connect the negative pole of electrochemical capacitor DC26 and the positive pole of stabilivolt DD11 and the other end of capacitor DC13, the head of the coil winding LT10 of switching mode power supply transformer DT2 connects the positive pole of diode DD7, the negative pole of diode DD7 is the positive pole of the positive pole output connection electrolytic condenser DC17 of insulating power supply VD1, the tail of the coil winding LT10 of switching mode power supply transformer DT2 is the negative pole of the negative pole output connection electrolytic condenser DC17 of insulating power supply VD1, the head of the coil winding LT12 of switching mode power supply transformer DT2 connects the positive pole of diode DD8, the negative pole of diode DD8 connects the positive pole of electrolytic condenser DC18 and capacitor DC8 and integrated package of pressure-stabilizing DU5 input end, integrated package of pressure-stabilizing DU5 output terminal is the positive output end of insulating power supply VD2, the tail of the coil winding LT12 of switching mode power supply transformer DT2 is the negative pole of the negative output terminal connection electrolytic condenser DC18 of insulating power supply VD2, the other end of capacitor DC8, integrated package of pressure-stabilizing DU5 control end, the negative pole of electrolytic condenser DC19 and the other end of capacitor DC9, the head of the coil winding LT11 of switching mode power supply transformer DT2 connects the positive pole of diode DD9, the negative pole of diode DD9 connects positive pole and the anti-interference filter DL5 of electrolytic condenser DC20, the other end of anti-interference filter DL5 connects the positive pole of capacitor DC10 and electrolytic condenser DC21 and the input end of integrated package of pressure-stabilizing DU6, the output terminal of integrated package of pressure-stabilizing DU6 is the positive pole of the positive pole output connection capacitor DC11 and electrolytic condenser DC22 of insulating power supply VD3, the tail of the coil winding LT11 of switching mode power supply transformer DT2 is the negative pole of the negative output terminal connection electrolytic condenser DC20 of insulating power supply VD3, the other end of capacitor DC10, the negative pole of electrolytic condenser DC21, integrated package of pressure-stabilizing DU6 control end, the negative pole of electrolytic condenser DC22 and the other end of capacitor DC11.

2. the said electric intelligent measure and control device of a Ju claim 1, the current detecting two-way double interchange floating amplifying circuit that it is characterized in that in electric intelligent measure and control device is the identical double amplifying circuits of current detecting two-way in three tunnels, by A phase current mutual inductor LA, B phase current mutual inductor LB, C phase current mutual inductor LC detects A phase power supply respectively, B phase power supply, the electric current of C phase power supply, A phase current signal one AI1 and A phase current signal two AI2 is exported respectively by the amplification of operational amplifier ZU1 and operational amplifier ZU4, B phase current signal one BI1 and B phase current signal two BI2 is exported by the amplification of operational amplifier ZU2 and operational amplifier ZU5, C phase current signal one CI1 and C phase current signal two CI2 is exported by the amplification of operational amplifier ZU3 and operational amplifier ZU6, specifically A phase current mutual inductor LA one end connects anti-interference power choke coil ZL1 and two-way transient suppressor ZV1 and resistance ZR22, the other end of anti-interference power choke coil ZL1 connects capacitor ZC1 and capacitor ZC2 and resistance ZR2 and operational amplifier ZU4 positive input terminal, the other end concatenation operation amplifier ZU1 positive input terminal of resistance ZR2, operational amplifier ZU1 negative input end contact resistance ZR3 and resistance ZR4, the other end of A phase current mutual inductor LA, the other end of two-way transient suppressor ZV1, the other end of capacitor ZC1, the other end of capacitor ZC2 is connected positive supply VDD0 with the other end of resistance ZR3, the other end concatenation operation amplifier ZU1 output terminal of resistance ZR4 and resistance ZR5, the other end of resistance ZR5 connects the positive pole of transient suppressor ZD1, capacitor ZC4, the positive pole of electrolytic condenser ZC19, the negative pole of diode ZD6 and A phase current signal one AI1, the negative pole of transient suppressor ZD1 connects VDD2, the other end of capacitor ZC4 is connected common port V0 with the negative pole of electrolytic condenser ZC19 with the negative pole of diode ZD6, operational amplifier ZU4 negative input end concatenation operation amplifier ZU4 output terminal and resistance ZR1, the other end of resistance ZR1 connects positive pole and A phase current signal two AI2 of capacitor ZC3 and electrolytic condenser ZC18, the other end of capacitor ZC3 is connected common port V0 with the negative pole of electrolytic condenser ZC18, B phase current mutual inductor LB one end connects anti-interference power choke coil ZL2 and two-way transient suppressor ZV2 and resistance ZR23, the other end of anti-interference power choke coil ZL2 connects capacitor ZC5 and capacitor ZC6 and resistance ZR7 and operational amplifier ZU5 positive input terminal, the other end concatenation operation amplifier ZU2 positive input terminal of resistance ZR7, operational amplifier ZU2 negative input end contact resistance ZR8 and resistance ZR9, the other end of B phase current mutual inductor LB, the other end of two-way transient suppressor ZV2, the other end of capacitor ZC5, the other end of capacitor ZC6 is connected positive supply VDD0 with the other end of resistance ZR8, the other end concatenation operation amplifier ZU2 output terminal of resistance ZR9 and resistance ZR10, the other end of resistance ZR10 connects the positive pole of transient suppressor ZD2, capacitor ZC8, the positive pole of electrochemical capacitor ZC21, the negative pole of diode ZD7 and B phase current signal one BI1, the negative pole of transient suppressor ZD2 connects VDD2, the other end of capacitor ZC8 is connected common port V0 with the negative pole of electrolytic condenser ZC21 with the positive pole of diode ZD7, operational amplifier ZU5 negative input end concatenation operation amplifier ZU5 output terminal and resistance ZR6, the other end of resistance ZR6 connects capacitor ZC7 and electrolytic condenser ZC20 positive pole and B phase current signal two BI2, the other end of capacitor ZC7 is connected common port V0 with the negative pole of electrolytic condenser ZC20, C phase current mutual inductor LC one end connects anti-interference power choke coil ZL3 and two-way transient suppressor ZV3 and resistance ZR24, the other end of anti-interference power choke coil ZL3 connects capacitor ZC9 and capacitor ZC10 and resistance ZR12 and operational amplifier ZU6 positive input terminal, the other end concatenation operation amplifier ZU3 positive input terminal of resistance ZR12, operational amplifier ZU3 negative input end contact resistance ZR13 and resistance ZR14, the other end of C phase current mutual inductor LC, the other end of two-way transient suppressor ZV3, the other end of capacitor ZC9, the other end of capacitor ZC10 is connected positive supply VDD0 with the other end of resistance ZR13, the other end concatenation operation amplifier ZU3 output terminal of resistance ZR14 and resistance ZR15, the other end of resistance ZR15 connects the positive pole of transient suppressor ZD3, capacitor ZC12, the positive pole of electrochemical capacitor ZC23, the negative pole of diode ZD8 and C phase current signal one CI1, the negative pole of transient suppressor ZD3 connects VDD2, the other end of capacitor ZC12 is connected common port V0 with the negative pole of electrolytic condenser ZC23 with the positive pole of diode ZD8, operational amplifier ZU6 negative input end concatenation operation amplifier ZU6 output terminal and resistance ZR11, the other end of resistance ZR11 connects positive pole and C phase current signal two CI2 of capacitor ZC11 and electrolytic condenser ZC22, the other end of capacitor ZC11 is connected common port V0 with the negative pole of electrolytic condenser ZC22, ground current mutual inductor LN one end connects anti-interference power choke coil ZL4 and two-way transient suppressor ZV4, the other end of anti-interference power choke coil ZL4 connects capacitor ZC13 and capacitor ZC14 and resistance ZR17 and resistance ZR16, the other end concatenation operation amplifier ZU7 positive input terminal of resistance ZR17, operational amplifier ZU7 negative input end contact resistance ZR18 and resistance ZR19, the other end contact resistance ZR21 of ground current mutual inductor LN, the other end of two-way transient suppressor ZV4 connects the other end of capacitor ZC13, the other end of capacitor ZC14 is connected positive supply VDD0 with the other end of resistance ZR18, the other end concatenation operation amplifier ZU7 output terminal of resistance ZR19 and resistance ZR20, the other end of resistance ZR20 connects the positive pole of transient suppressor ZD4, capacitor ZC16, the positive pole of electrochemical capacitor ZC25, the negative pole of diode ZD9 and ground current signal one NI1, the negative pole of transient suppressor ZD4 connects VDD2, the other end of capacitor ZC16 is connected common port V0 with the negative pole of electrolytic condenser ZC25 with the positive pole of diode ZD9, the other end of resistance ZR16 connects positive pole and ground current signal two NI2 of capacitor ZC15 and electrolytic condenser ZC24, the another end of capacitor ZC15 is connected common port V0 with the negative pole of electrolytic condenser ZC24, the other end of resistance ZR21, the other end of resistance ZR22, the positive input terminal of other end concatenation operation amplifier ZU8 together with the other end of resistance ZR24 of resistance ZR23 and resistance ZR25, the output terminal of the other end concatenation operation amplifier ZU8 of resistance ZR25 and resistance ZR27, the other end of resistance ZR26 connects positive supply VDD0, the other end of resistance ZR27 connects the positive pole of transient suppressor ZD5, capacitor ZC17, the positive pole of electrochemical capacitor ZC26, the negative pole of diode ZD10 and ground current signal one NI3, the negative pole of transient suppressor ZD5 connects VDD2, the other end of capacitor ZC17 is connected common port V0 with the negative pole of electrolytic condenser ZC26 with the positive pole of diode 10.

3. the said electric intelligent measure and control device of a Ju claim 1, it is characterized in that resistance step-down transformer isolation voltage in electric intelligent measure and control device detects floating amplifying circuit is the identical voltage detecting amplifying circuits in three tunnels, respectively by resistance UR1 and resistance UR2 and resistance UR3 step-down, connect isolating transformer UTA armature winding tail and isolating transformer UTB armature winding tail and isolating transformer UTC armature winding tail respectively again, isolating transformer UTA armature winding head and isolating transformer UTB armature winding head and isolating transformer UTC armature winding head and ground connection zero power supply N connect, isolating transformer UTA secondary winding head connects two-way transient suppressor UV1 and resistance UR4 and resistance UR5, the positive input terminal of the other end concatenation operation amplifier UU1 of resistance UR5, the negative input end contact resistance UR6 of operational amplifier UU1 and resistance UR7, isolating transformer UTA secondary winding tail, the other end of two-way transient suppressor UV1, the other end of resistance UR4, the other end of resistance U6 connects positive supply VDD0 together, the other end concatenation operation amplifier UU1 output terminal of resistance R7 and resistance UR8, the other end of resistance UR8 connects positive pole and the capacitor UC4 and A phase voltage signal AV of electrolytic condenser UC1, contact resistance UR19 and resistance UR25 simultaneously, the negative pole of electrolytic condenser UC1 is connected common port V0 with the other end of capacitor UC4, isolating transformer UTB secondary winding head connects two-way transient suppressor UV2 and resistance UR9 and resistance UR10, the positive input terminal of the other end concatenation operation amplifier UU2 of resistance UR10, the negative input end contact resistance UR11 of operational amplifier UU2 and resistance UR12, isolating transformer UTB secondary winding tail, the other end of two-way transient suppressor UV2, the other end of resistance UR9, the other end of resistance U11 connects positive supply VDD0 together, the other end concatenation operation amplifier UU2 output terminal of resistance R12 and resistance UR13, the other end of resistance UR13 connects positive pole and the capacitor UC5 and B phase voltage signal BV of electrolytic condenser UC2, contact resistance UR22 and resistance UR28 simultaneously, the negative pole of electrolytic condenser UC2 is connected common port V0 with the other end of capacitor UC5, isolating transformer UTC secondary winding head connects two-way transient suppressor UV3 and resistance UR14 and resistance UR15, the positive input terminal of the other end concatenation operation amplifier UU3 of resistance UR15, the negative input end contact resistance UR16 of operational amplifier UU3 and resistance UR17, isolating transformer UTC secondary winding tail, the other end of two-way transient suppressor UV3, the other end of resistance UR14, the other end of resistance U16 connects positive supply VDD0 together, the other end concatenation operation amplifier UU3 output terminal of resistance R17 and resistance UR18, the other end of resistance UR18 connects positive pole and the capacitor UC6 and C phase voltage signal CV of electrolytic condenser UC3, contact resistance UR30 simultaneously, the negative pole of electrolytic condenser UC3 is connected common port V0 with the other end of capacitor UC6, the other end contact resistance UR20 of resistance UR19 and the positive input terminal of operational amplifier UU4, the negative input end of operational amplifier UU4 connects positive supply VDD0, the output terminal contact resistance UR21 of operational amplifier UU4 and the other end of resistance UR20 and electric capacity UC7 and A phase voltage compare end AVB, the other end of resistance UR21 connects positive supply VDD2, the other end of electric capacity UC7 connects common port V0, the other end contact resistance UR23 of resistance UR22 and the positive input terminal of operational amplifier UU5, the negative input end of operational amplifier UU5 connects positive supply VDD0, the output terminal contact resistance UR24 of operational amplifier UU5 and the other end of resistance UR23 and electric capacity UC8 and B phase voltage compare end BVB, the other end of resistance UR24 connects positive supply VDD2, the other end of electric capacity UC8 connects common port V0, the other end contact resistance UR26 of resistance UR25 and the positive input terminal of operational amplifier UU6, the negative input end of operational amplifier UU6 connects positive supply VDD0, the P1 end of the output terminal contact resistance UR27 of operational amplifier UU6 and the other end of resistance UR26 and electric capacity UC9 and d type flip flop UU8, the other end of resistance UR27 connects positive supply VDD2, the other end of electric capacity UC9 connects common port V0, the other end contact resistance UR29 of resistance UR28 and the positive input terminal of operational amplifier UU7, the other end of the negative input end contact resistance UR30 of operational amplifier UU7, the P2 end of the output terminal contact resistance UR31 of operational amplifier UU7 and the other end of resistance UR29 and electric capacity UC10 and d type flip flop UU9, the other end of resistance UR31 connects positive supply VDD2, the other end of electric capacity UC10 connects common port V0, the D1 end of d type flip flop UU8 is connected positive supply VDD2 with the D2 end of d type flip flop UU9, the S1 end of d type flip flop UU8 is connected common port V0 with the S2 end of d type flip flop UU9, the Q1 end of d type flip flop UU8 and the R2 end of d type flip flop UU9, the R1 end of d type flip flop UU8 and d type flip flop UU9 end connects the Q2 end connection BC phase voltage comparison signal end BCVB that A phase current compares end AIB, d type flip flop UU9.