CN204241544U - The current true virtual value transmitter of AC/DC universal - Google Patents
The current true virtual value transmitter of AC/DC universal Download PDFInfo
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- CN204241544U CN204241544U CN201420674731.XU CN201420674731U CN204241544U CN 204241544 U CN204241544 U CN 204241544U CN 201420674731 U CN201420674731 U CN 201420674731U CN 204241544 U CN204241544 U CN 204241544U
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Abstract
The utility model relates to a kind of current true virtual value transmitter of AC/DC universal, comprise current signal sampling module, RMS conversion module, Signal-regulated kinase and ER effect send output module and power module, the input end of current signal sampling module is connected with current signal to be measured, the output terminal of current signal sampling module is connected with the input end of RMS conversion module, the output terminal of RMS conversion module is connected with the input end of Signal-regulated kinase, output terminal and the ER effect of Signal-regulated kinase send the input end of output module to be connected, ER effect send the output terminal of output module to send output wiring terminal to be connected with the ER effect of transmitter.The utility model can Measurement accuracy 0 ~ 2000Hz wideband current amplitude, especially can measure the low-frequency current signal unloading phase of generator, can carry out overall monitor to generator from starting to this process of steady operation, alternating current-direct current signal is general, measure accurately, expand use field.
Description
Technical field
The utility model relates to a kind of transmitter, particularly relates to a kind of current true virtual value transmitter of AC/DC universal.
Background technology
At present, conventional alternating current transmitter often adopts current transformer mode to carry out signal sampling, and conventional current mutual inductor is conditional for the frequency of sampled signal, frequency is too low or too high all cannot normally work, be limited by these reasons, the frequency input signal of conventional alternating current transmitter is generally confined to 45Hz to 55Hz.And generator needs certain hour from starting to stable operation, after generator starts, turbine rotating speed can from zero gradually toward rising, and corresponding power frequency also can rise gradually, is to the last stabilized to about 50Hz.Therefore, when generator just starts, power frequency is low-down, even less than 5Hz, therefore the low-frequency current signal unloading phase that the current transducer of routine cannot measuring generator, overall monitor cannot be carried out to generator from starting to this process of steady operation.
Summary of the invention
The current input signal frequency that the utility model mainly solves original current transducer is confined to narrower frequency range, the low-frequency current signal unloading phase of generator cannot be measured, cannot to generator from the technical matters starting to this process of steady operation and carry out overall monitor; A kind of current true virtual value transmitter of AC/DC universal is provided, the current signal that its energy survey frequency variation range is larger, especially the low-frequency current signal unloading phase of generator can be measured, can carry out overall monitor to generator from starting to this process of steady operation, and alternating current-direct current signal is general.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: the utility model comprises current signal sampling module, RMS conversion module, Signal-regulated kinase and ER effect send output module and provide the power module of operating voltage for whole transmitter, the input end of current signal sampling module is connected with current signal to be measured, the output terminal of current signal sampling module is connected with the input end of RMS conversion module, the output terminal of RMS conversion module is connected with the input end of Signal-regulated kinase, output terminal and the ER effect of Signal-regulated kinase send the input end of output module to be connected, ER effect send the output terminal of output module to send output wiring terminal to be connected with the ER effect of transmitter.High-end and the low side of current signal to be measured (current signal as in generator start-up course) is connected to two input ends of current signal sampling module, specified amplitude range ability is interior and frequency is that the electric current (primary current) of 0 ~ 2000Hz is through the process of current signal sampling module, be converted into secondary current signal and flow to RMS conversion module, by the process of RMS conversion module, export the voltage signal meeting the specified amplitude range of RMS conversion module, this voltage signal is input to Signal-regulated kinase again, carry out voltage conditioning, the process of output module is sent again through ER effect, convert current signal change to and send output.Under Signal-regulated kinase and ER effect send output module one to work, the null value of the voltage signal inputing to Signal-regulated kinase and 100% specified full scale signal is made to be converted to 4mADC and 20mADC respectively, thus when making current input signal from zero to specified amplitude full scale value linear increase, 4 ~ 20mADC output signal is also along with linear increase, and output is sent in the change realizing current true virtual value.The current signal that the utility model energy survey frequency changes within the scope of 0 ~ 2000Hz, therefore can measure the low-frequency current signal unloading phase of generator, can carry out overall monitor, and alternating current-direct current signal is general to generator from starting to this process of steady operation.
As preferably, described current signal sampling module comprises Hall mutual inductor CT, voltage dependent resistor (VDR) P1, sampling resistor R1, stabilivolt D1, stabilivolt D2 and electric capacity C7, two lead terminals of Hall mutual inductor CT are connected with described current signal to be measured, power input positive pole VIN+ and the power input negative pole VIN-of Hall mutual inductor CT are connected with the output terminal of described power module respectively, voltage dependent resistor (VDR) P1, sampling resistor R1 and electric capacity C7 connects into parallel circuit, one end of this parallel circuit and the current output terminal Iout of Hall mutual inductor CT are connected to form secondary current output terminal IN-A, the other end ground connection of this parallel circuit, the negative pole of stabilivolt D1 is connected with the negative pole of stabilivolt D2, the positive pole of stabilivolt D1 is connected with secondary current output terminal IN-A, the plus earth of stabilivolt D2.Frequency is that the primary current of 0 ~ 2000Hz flows through the primary winding worn around on Hall mutual inductor, and the secondary coil on Hall mutual inductor induces secondary current accordingly and flows to RMS conversion module.Employing Hall mutual inductor effectively can reduce the mutual interference between primary current and secondary current, improves the accuracy of the data collected.
As preferably, described RMS conversion module comprises real effective simulator U1 and electrochemical capacitor C8, the signal input part Vin of real effective simulator U1 is connected with the output terminal of described current signal sampling module, operating voltage anode+VS and the operating voltage negative terminal-VS of real effective simulator U1 are connected with the output terminal of described power module respectively, operating voltage anode+the VS of real effective simulator U1 is connected with the positive pole of electrochemical capacitor C8, the negative pole of electrochemical capacitor C8 is connected with the link Cav of real effective simulator U1, the link COM of real effective simulator U1 and the equal ground connection of link RL, the link BUF IN of real effective simulator U1 is connected with the current output terminal Iout of real effective simulator U1, the pin BUF OUT output equivalent level Ueq of real effective simulator U1 gives the input end of described Signal-regulated kinase.Real effective simulator effectively can process the waveform signal of broadband and more complicated, is the core that AC/DC broadband current amplitude is measured.The conversion of current true virtual value to Equivalent DC level is realized by real effective simulator, the accuracy that distorted sine wave and nonsinusoidal wave are measured can be ensured, AC and DC signal can be calculated, its Measurement bandwidth is 300K (signal is greater than 100mV), achieves the object of input signal AC/DC universal and broadband signal measurement.
As preferably, described Signal-regulated kinase comprises adjustable resistance VR1, adjustable resistance VR2, resistance R2 ~ resistance R7, resistance R16, resistance R17, three-terminal regulator block U4, stabilivolt D3 and operational amplifier U2, the output terminal of described RMS conversion module is connected with the inverting input of operational amplifier U2 through adjustable resistance VR1 and resistance R4, the inverting input of operational amplifier U2 is connected with the output terminal of operational amplifier U2 through resistance R5, the in-phase input end ground connection of operational amplifier U2, the inverting input of operational amplifier U2 is connected with one end of resistance R3 and resistance R17 again, the other end of resistance R3 is connected with voltage V+ through resistance R2, the other end of resistance R17 is connected with the adjustable end of adjustable resistance VR2, a stiff end ground connection of adjustable resistance VR2, another stiff end of adjustable resistance VR2 is connected with one end of resistance R16, the other end of resistance R16, the output end of pressure-stabilizing of three-terminal regulator block U4, the negative electrode of three-terminal regulator block U4 and one end of resistance R6 are all connected with the also contact of resistance R3 with resistance R2, the plus earth of three-terminal regulator block U4, the other end of resistance R6, one tunnel is connected with the output terminal of operational amplifier U2 through resistance R7, another road is connected with the negative pole of stabilivolt D3, the plus earth of stabilivolt D3, electric capacity C9 and stabilivolt D3 is in parallel, the negative pole output level Ud of stabilivolt D3 send the input end of output module to described ER effect.Signal-regulated kinase mainly adjusts input voltage signal, calibrates zero point of signal and full scale value, provides suitable level for final ER effect send to export.By the zero potential device in difference conditioning signal conditioning module and full scale potentiometer, make to be input to the voltage zero signal of Signal-regulated kinase and 100% specified full scale signal to send after output module process through Signal-regulated kinase and ER effect and be converted to 4mADC and 20mADC DC current signal respectively, thus when making current input signal from zero to specified amplitude full scale value linear increase, 4 ~ 20mADC ER effect send output signal also along with linear increase.
As preferably, described ER effect send output module to comprise operational amplifier U3, resistance R8, resistance R10, resistance R12, resistance R14, resistance R18, electric capacity C10, electric capacity C12, electrochemical capacitor C11, triode Q1 and voltage dependent resistor (VDR) P4, the output terminal of described Signal-regulated kinase is connected with the inverting input of operational amplifier U3, the in-phase input end ground connection of operational amplifier U3, the inverting input of operational amplifier U3 is connected with the output terminal of operational amplifier U3 through electric capacity C10, the output terminal of operational amplifier U3 is connected with the base stage of triode Q1 through resistance R10, the base stage of triode Q1 is through electric capacity C12 ground connection, the collector of triode Q1 meets voltage V+ through resistance R12, the emitter of triode Q1 is connected with the positive pole of electrochemical capacitor C11 through resistance R14, the negative pole of electrochemical capacitor C11 is through resistance R18 ground connection, voltage dependent resistor (VDR) P4 and electrochemical capacitor C11 is in parallel, the inverting input of operational amplifier U3 is connected with the negative pole of electrochemical capacitor C11 through resistance R8, the two ends of voltage dependent resistor (VDR) P4 output signal AO+ and signal AO-respectively and send output wiring terminal to the ER effect of transmitter.Send output module process through ER effect, convert voltage signal to ER effect and send output signal, guarantee to export not by the direct current signal that external loading affects.ER effect send output wiring terminal to be connected to reometer, digital display meter etc. and measures and show on the equipment of current value, user just can be allowed to observe current value to be measured and situation of change thereof, thus overall monitor can be carried out to generator from starting to this process of steady operation.
As preferably, described power module comprises voltage dependent resistor (VDR) P2, voltage dependent resistor (VDR) P3, inductance L 1 ~ inductance L 4, fuse FUSE, power transfer module T1, high-voltage capacitance C1, high-voltage capacitance C2, electrochemical capacitor C3 ~ electrochemical capacitor C6, the two ends of voltage dependent resistor (VDR) P2 are connected with the two ends of transmitter input power respectively, one end of voltage dependent resistor (VDR) P2 is connected with one end of voltage dependent resistor (VDR) P3 and one end of fuse FUSE through inductance L 1, the other end of fuse FUSE is connected with the power input VIN of power transfer module T1, the other end of voltage dependent resistor (VDR) P2 is connected with the other end of voltage dependent resistor (VDR) P3 and the earth terminal of power transfer module T1 through inductance L 2, high-voltage capacitance C1 is connected between the power input VIN of power transfer module T1 and the power supply output cathode end+VO of power transfer module T1, high-voltage capacitance C2 is connected between the earth terminal of power transfer module T1 and the power supply output negative pole end-VO of power transfer module T1, the power supply output cathode end+VO of power transfer module T1 is through inductance L 3 output voltage V+, the power supply output negative pole end-VO of power transfer module T1 is through inductance L 4 output voltage V-, the two ends of inductance L 3 respectively with the positive pole of electrochemical capacitor C3, the positive pole of electrochemical capacitor C4 is connected, the negative pole of electrochemical capacitor C3, the negative pole of electrochemical capacitor C4 all exports ground end OV and is connected with the power supply of power transfer module T1, the two ends of inductance L 4 respectively with the negative pole of electrochemical capacitor C5, the negative pole of electrochemical capacitor C6 is connected, the positive pole of electrochemical capacitor C5, the positive pole of electrochemical capacitor C6 all exports ground end OV and is connected with the power supply of power transfer module T1.Transmitter input power is direct current 24V power supply, and direct current 24V Power convert is become DC voltage V+ and DC voltage V-by power module, for other circuit in current true virtual value transmitter provide operating voltage.
As preferably, the current true virtual value transmitter of described AC/DC universal comprises first line plate and the second wiring board, and described current signal sampling module, RMS conversion module, Signal-regulated kinase, ER effect send output module and power module all to have three groups, the power module of three groups and current signal sampling module are installed on described first line plate, first line plate is also provided with three contact pins, each power module organized, current signal sampling module and contact pin are arranged in a row, and the output terminal of power module and the output terminal of current signal sampling module of each group are connected with the contact pin of affiliated group respectively, the RMS conversion module of three groups, Signal-regulated kinase and ER effect send output module to be installed on the second described wiring board, second wiring board is also provided with three female seats, the RMS conversion module of each group, Signal-regulated kinase, ER effect send output module and female seat to be arranged in a row, the RMS conversion module of each group, Signal-regulated kinase and ER effect send the operating voltage input end of output module and the input end of RMS conversion module to be connected with the female seat of affiliated group respectively, three female seats on second wiring board and the contact pin of three on first line plate respectively one_to_one corresponding are connected.The wire that contact pin and female seat can be respectively equipped with adapter by two ends is connected, and also can directly grafting be connected.The technical program realizes the current true virtual value transmitter of three combination AC/DC universals, is assembled by first line plate and the second wiring board two pieces of wiring boards, and the function of each group is all identical.In each group, power module is powered to current signal sampling module by the printed conductor on first line plate, and voltage signal is transported to contact pin, by connected contact pin and female seat, voltage signal being transported to the second wiring board, sending the wire between output module to provide operating voltage for each several part by being printed on female seat and RMS conversion module, Signal-regulated kinase and ER effect.Secondary current is transported to respective pins by the printed conductor on first line plate by current signal sampling module, by connected contact pin and female seat, secondary current is transported to the second wiring board, then flows to RMS conversion module by the printed conductor on the second wiring board.The technical program, can measure three groups of electric currents simultaneously, use convenient.
The beneficial effects of the utility model are: can Measurement accuracy 0 ~ 2000Hz wideband current amplitude, especially the low-frequency current signal unloading phase of generator can be measured, overall monitor can be carried out from starting to this process of steady operation to generator, and alternating current-direct current signal is general, and have employed real effective owing to calculating in sampling, the accuracy that distorted sine wave and nonsinusoidal wave are measured can be ensured, expand use field.
Accompanying drawing explanation
Fig. 1 is a kind of circuit theory syndeton block diagram of the present utility model.
Fig. 2 is a kind of circuit theory diagrams of power module in the utility model.
Fig. 3 is a kind of circuit theory diagrams of current signal sampling module in the utility model.
Fig. 4 is a kind of circuit theory diagrams of RMS conversion module in the utility model.
Fig. 5 is a kind of circuit theory diagrams of Signal-regulated kinase in the utility model.
Fig. 6 is a kind of circuit theory diagrams that in the utility model, ER effect send output module.
Fig. 7 is a kind of mounting structure schematic diagram of first line plate in the utility model.
Fig. 8 is a kind of mounting structure schematic diagram of the second wiring board in the utility model.
1. current signals to be measured, 2. current signal sampling module, 3. RMS conversion module, 4. Signal-regulated kinase in figure, 5. ER effect send output module, 6. power module, and 7. ER effect send output wiring terminal, 8. first line plate, 9. the second wiring board, 10. contact pin, 11. female seats.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: the current true virtual value transmitter of the AC/DC universal of the present embodiment, as shown in Figure 1, comprise current signal sampling module 2, RMS conversion module 3, Signal-regulated kinase 4 and ER effect send output module 5 and provide the power module 6 of operating voltage for whole current true virtual value transmitter, the input end of current signal sampling module 2 is connected with current signal 1 to be measured, the output terminal of current signal sampling module 2 is connected with the input end of RMS conversion module 3, the output terminal of RMS conversion module 3 is connected with the input end of Signal-regulated kinase 4, output terminal and the ER effect of Signal-regulated kinase 4 send the input end of output module 5 to be connected, ER effect send the output terminal of output module 5 and the ER effect of current true virtual value transmitter to send output wiring terminal 7 to be connected.
As shown in Figure 2, power module 6 comprises voltage dependent resistor (VDR) P2, voltage dependent resistor (VDR) P3, inductance L 1 ~ inductance L 4, fuse FUSE, power transfer module T1, high-voltage capacitance C1, high-voltage capacitance C2, electrochemical capacitor C3 ~ electrochemical capacitor C6, power transfer module T1 adopts WRE2415P-6W DC-DC converter, and fuse FUSE adopts resettable fuse.The two ends of voltage dependent resistor (VDR) P2 are connected with the two ends of current true virtual value transmitter input power respectively, in the present embodiment, the input power of current true virtual value transmitter is direct current 24V power supply, one end of power supply voltage dependent resistor (VDR) P2 is connected with one end of voltage dependent resistor (VDR) P3 and one end of fuse FUSE through inductance L 1, the other end of fuse FUSE is connected with 22 pin of power transfer module T1 and 23 pin, the other end of voltage dependent resistor (VDR) P2 is connected through inductance L 2 and the other end of voltage dependent resistor (VDR) P3 and 2 pin of power transfer module T1 and 3 pin, high-voltage capacitance C1 is connected between 22 pin of power transfer module T1 and 14 pin, high-voltage capacitance C2 is connected between 3 pin of power transfer module T1 and 11 pin, 14 pin of power transfer module T1 are through inductance L 3 output voltage V+, 11 pin of power transfer module T1 are through inductance L 4 output voltage V-, the two ends of inductance L 3 respectively with the positive pole of electrochemical capacitor C3, the positive pole of electrochemical capacitor C4 is connected, the negative pole of electrochemical capacitor C3, the negative pole of electrochemical capacitor C4 be all connected the output that forms power module 6 with 9 pin of power transfer module T1 and 16 pin holds GND, the two ends of inductance L 4 respectively with the negative pole of electrochemical capacitor C5, the negative pole of electrochemical capacitor C6 is connected, the positive pole of electrochemical capacitor C5, the positive pole of electrochemical capacitor C6 is all connected with 9 pin of power transfer module T1 and 16 pin.
As shown in Figure 3, current signal sampling module 2 comprises Hall mutual inductor CT, voltage dependent resistor (VDR) P1, sampling resistor R1, stabilivolt D1, stabilivolt D2 and electric capacity C7, Hall mutual inductor CT adopts CSNP661 magnetic balance Hall mutual inductor, two current signal input terminal I* and I of Hall mutual inductor CT are connected with current signal 1 to be measured, current signal to be measured is the current signal of generator, the power input positive pole VIN+ of Hall mutual inductor CT and power input negative pole VIN-is connected with the output voltage V+ of power module 6 and voltage V-respectively, voltage dependent resistor (VDR) P1, sampling resistor R1 and electric capacity C7 connects into parallel circuit, one end of this parallel circuit and the current output terminal Iout of Hall mutual inductor CT are connected to form secondary current output terminal IN-A, the other end ground connection of this parallel circuit, the negative pole of stabilivolt D1 is connected with the negative pole of stabilivolt D2, the positive pole of stabilivolt D1 is connected with secondary current output terminal IN-A, the plus earth of stabilivolt D2.
As shown in Figure 4, RMS conversion module 3 comprises real effective simulator U1 and electrochemical capacitor C8, real effective simulator U1 adopts AD536AJH DC converter, 4 pin of real effective simulator U1 are connected with the secondary current output terminal IN-A of current signal sampling module 2, 5 pin of real effective simulator U1 and 3 pin are connected with the output voltage V-of power module 6 and voltage V+ respectively, 3 pin of real effective simulator U1 are connected with the positive pole of electrochemical capacitor C8, the negative pole of electrochemical capacitor C8 is connected with 6 pin of real effective simulator U1, 1 pin of real effective simulator U1 and the equal ground connection of 2 pin, 9 pin of real effective simulator U1 are connected with 10 pin, the 8 pin output equivalent level Ueq of real effective simulator U1.
As shown in Figure 5, Signal-regulated kinase 4 comprises adjustable resistance VR1, adjustable resistance VR2, resistance R2 ~ resistance R7, resistance R16, resistance R17, three-terminal regulator block U4, stabilivolt D3 and operational amplifier U2, the equivalent level Ueq that RMS conversion module 3 exports is connected with a stiff end of adjustable resistance VR1, another stiff end of adjustable resistance VR1 is connected with adjustable end and is connected with the inverting input of operational amplifier U2 through resistance R4, the inverting input of operational amplifier U2 is connected with the output terminal of operational amplifier U2 through resistance R5, the in-phase input end ground connection of operational amplifier U2, the inverting input of operational amplifier U2 is connected with one end of resistance R3 and resistance R17 again, the other end of resistance R3 is connected with voltage V+ through resistance R2, the other end of resistance R17 is connected with the adjustable end of adjustable resistance VR2, a stiff end ground connection of adjustable resistance VR2, another stiff end of adjustable resistance VR2 is connected with one end of resistance R16, the other end of resistance R16, the output end of pressure-stabilizing of three-terminal regulator block U4, the negative electrode of three-terminal regulator block U4 and one end of resistance R6 are all connected with the also contact of resistance R3 with resistance R2, the plus earth of three-terminal regulator block U4, the other end of resistance R6, one tunnel is connected with the output terminal of operational amplifier U2 through resistance R7, another road is connected with the negative pole of stabilivolt D3, the plus earth of stabilivolt D3, electric capacity C9 and stabilivolt D3 is in parallel, the negative pole output level Ud of stabilivolt D3.
As shown in Figure 6, ER effect send output module 5 to comprise operational amplifier U3, resistance R8, resistance R10, resistance R12, resistance R14, resistance R18, electric capacity C10, electric capacity C12, electrochemical capacitor C11, triode Q1 and voltage dependent resistor (VDR) P4, the level Ud that inverting input and the Signal-regulated kinase 4 of operational amplifier U3 export is connected, the in-phase input end ground connection of operational amplifier U3, the inverting input of operational amplifier U3 is connected with the output terminal of operational amplifier U3 through electric capacity C10, the output terminal of operational amplifier U3 is connected with the base stage of triode Q1 through resistance R10, the base stage of triode Q1 is through electric capacity C12 ground connection, the collector of triode Q1 meets voltage V+ through resistance R12, the emitter of triode Q1 is connected with the positive pole of electrochemical capacitor C11 through resistance R14, the negative pole of electrochemical capacitor C11 is through resistance R18 ground connection, voltage dependent resistor (VDR) P4 and electrochemical capacitor C11 is in parallel, the inverting input of operational amplifier U3 is connected with the negative pole of electrochemical capacitor C11 through resistance R8 again, the two ends of voltage dependent resistor (VDR) P4 output signal AO+ and signal AO-respectively, the ER effect that signal AO+ and signal AO-is connected respectively to current true virtual value transmitter send on output wiring terminal 7.ER effect send output wiring terminal to be connected to reometer, digital display meter etc. and measures and show on the equipment of current value, user just can be allowed to observe current value to be measured and situation of change thereof, thus overall monitor can be carried out to generator from starting to this process of steady operation.
High-end and the low side of current signal to be measured (current signal as in generator start-up course) is connected to the two ends of the primary winding worn around magnetic balance Hall mutual inductor, in specified amplitude range ability and the primary current signal that frequency is 0 ~ 2000Hz flow through and wear after the primary winding on magnetic balance Hall mutual inductor, magnetic balance Hall mutual inductor induces secondary current signal accordingly.Magnetic balance Hall mutual inductor effectively can reduce the mutual crosstalk once and between secondary current.The secondary current signal that magnetic balance Hall mutual inductor correspondence induces, by the process of RMS conversion module, export the voltage signal meeting the specified amplitude range of RMS conversion module, RMS conversion module effectively can process the waveform signal of broadband and more complicated, it is the core that AC/DC broadband current amplitude is measured, the voltage signal that RMS conversion module exports is input to Signal-regulated kinase again, carry out voltage conditioning, send the process of output module again through ER effect, convert current signal change to and send output.By the zero potential device in difference conditioning signal conditioning module and full scale potentiometer, make to be input to the voltage zero signal of Signal-regulated kinase and 100% specified full scale signal to send after output module process through Signal-regulated kinase and ER effect and be converted to 4mADC and 20mADC DC current signal respectively, thus when making current input signal from zero to specified amplitude full scale value linear increase, 4 ~ 20mADC ER effect send output signal also along with linear increase.
The utility model can Measurement accuracy 0 ~ 2000Hz wideband current amplitude, especially the low-frequency current signal unloading phase of generator can be measured, overall monitor can be carried out from starting to this process of steady operation to generator, and alternating current-direct current signal is general, and have employed real effective owing to calculating in sampling, the accuracy that distorted sine wave and nonsinusoidal wave are measured can be ensured.
Embodiment 2: the current true virtual value transmitter of the AC/DC universal of the present embodiment, as shown in Figure 7, Figure 8, comprise first line plate 8 and the second wiring board 9, in the present embodiment, current signal sampling module 2, RMS conversion module 3, Signal-regulated kinase 4, ER effect send output module 5 and power module 6 all to have three groups.The power module 6 of three groups and current signal sampling module 2 are installed on first line plate 8, first line plate 8 is also provided with three contact pins 10, each power module 6 organized, current signal sampling module 2 and contact pin 10 are arranged in a row, and the output terminal of power module 6 and the output terminal of current signal sampling module 2 of each group are connected with the contact pin 10 of affiliated group respectively.The RMS conversion module 3 of three groups, Signal-regulated kinase 4 and ER effect send output module 5 to be installed on the second wiring board 9, second wiring board 9 is also provided with three female seats 11, the RMS conversion module 3 of each group, Signal-regulated kinase 4, ER effect send output module 5 and female seat 11 to be arranged in a row, and each the RMS conversion module 3 organized, Signal-regulated kinase 4 and ER effect send the input end of the operating voltage input end of output module 5 and RMS conversion module 3 to be connected with the female seat 11 of affiliated group respectively.The wire that three female seats 11 on second wiring board 9 and the contact pin of three on first line plate 8 10 are respectively provided with adapter by two ends respectively is correspondingly connected.All the other structures are with embodiment 1.
The present embodiment realizes the current true virtual value transmitter of three combination AC/DC universals, is assembled by first line plate and the second wiring board two pieces of wiring boards, and the course of work of each group is with embodiment 1, and the function of each group is all identical.In each group, power module is powered to current signal sampling module by the printed conductor on first line plate, and voltage signal is transported to contact pin, by connected contact pin and female seat, voltage signal being transported to the second wiring board, sending the wire between output module to provide operating voltage for each several part by being printed on female seat and RMS conversion module, Signal-regulated kinase and ER effect.Secondary current is transported to respective pins by the printed conductor on first line plate by current signal sampling module, by connected contact pin and female seat, secondary current is transported to the second wiring board, then flows to RMS conversion module by the printed conductor on the second wiring board.The present embodiment can measure three groups of electric currents simultaneously, uses convenient.
Claims (7)
1. the current true virtual value transmitter of an AC/DC universal, it is characterized in that comprising current signal sampling module (2), RMS conversion module (3), Signal-regulated kinase (4) and ER effect send output module (5) and provide the power module (6) of operating voltage for whole transmitter, the input end of current signal sampling module (2) is connected with current signal to be measured (1), the output terminal of current signal sampling module (2) is connected with the input end of RMS conversion module (3), the output terminal of RMS conversion module (3) is connected with the input end of Signal-regulated kinase (4), output terminal and the ER effect of Signal-regulated kinase (4) send the input end of output module (5) to be connected, ER effect send the output terminal of output module (5) and the ER effect of transmitter to send output wiring terminal (7) to be connected.
2. the current true virtual value transmitter of AC/DC universal according to claim 1, it is characterized in that described current signal sampling module (2) comprises Hall mutual inductor CT, voltage dependent resistor (VDR) P1, sampling resistor R1, stabilivolt D1, stabilivolt D2 and electric capacity C7, two lead terminals of Hall mutual inductor CT are connected with described current signal to be measured (1), the power input positive pole VIN+ of Hall mutual inductor CT and power input negative pole VIN-is connected with the output terminal of described power module (6) respectively, voltage dependent resistor (VDR) P1, sampling resistor R1 and electric capacity C7 connects into parallel circuit, one end of this parallel circuit and the current output terminal Iout of Hall mutual inductor CT are connected to form secondary current output terminal IN-A, the other end ground connection of this parallel circuit, the negative pole of stabilivolt D1 is connected with the negative pole of stabilivolt D2, the positive pole of stabilivolt D1 is connected with secondary current output terminal IN-A, the plus earth of stabilivolt D2.
3. the current true virtual value transmitter of AC/DC universal according to claim 1, it is characterized in that described RMS conversion module (3) comprises real effective simulator U1 and electrochemical capacitor C8, the signal input part Vin of real effective simulator U1 is connected with the output terminal of described current signal sampling module (2), operating voltage anode+the VS of real effective simulator U1 and operating voltage negative terminal-VS is connected with the output terminal of described power module (6) respectively, operating voltage anode+the VS of real effective simulator U1 is connected with the positive pole of electrochemical capacitor C8, the negative pole of electrochemical capacitor C8 is connected with the link Cav of real effective simulator U1, the link COM of real effective simulator U1 and the equal ground connection of link RL, the link BUF IN of real effective simulator U1 is connected with the current output terminal Iout of real effective simulator U1, the pin BUF OUT output equivalent level Ueq of real effective simulator U1 gives the input end of described Signal-regulated kinase (4).
4. the current true virtual value transmitter of the AC/DC universal according to claim 1 or 2 or 3, it is characterized in that described Signal-regulated kinase (4) comprises adjustable resistance VR1, adjustable resistance VR2, resistance R2 ~ resistance R7, resistance R16, resistance R17, three-terminal regulator block U4, stabilivolt D3 and operational amplifier U2, the output terminal of described RMS conversion module (3) is connected with the inverting input of operational amplifier U2 through adjustable resistance VR1 and resistance R4, the inverting input of operational amplifier U2 is connected with the output terminal of operational amplifier U2 through resistance R5, the in-phase input end ground connection of operational amplifier U2, the inverting input of operational amplifier U2 is connected with one end of resistance R3 and resistance R17 again, the other end of resistance R3 is connected with voltage V+ through resistance R2, the other end of resistance R17 is connected with the adjustable end of adjustable resistance VR2, a stiff end ground connection of adjustable resistance VR2, another stiff end of adjustable resistance VR2 is connected with one end of resistance R16, the other end of resistance R16, the output end of pressure-stabilizing of three-terminal regulator block U4, the negative electrode of three-terminal regulator block U4 and one end of resistance R6 are all connected with the also contact of resistance R3 with resistance R2, the plus earth of three-terminal regulator block U4, the other end of resistance R6, one tunnel is connected with the output terminal of operational amplifier U2 through resistance R7, another road is connected with the negative pole of stabilivolt D3, the plus earth of stabilivolt D3, electric capacity C9 and stabilivolt D3 is in parallel, the negative pole output level Ud of stabilivolt D3 send the input end of output module (5) to described ER effect.
5. the current true virtual value transmitter of the AC/DC universal according to claim 1 or 2 or 3, it is characterized in that described ER effect send output module (5) to comprise operational amplifier U3, resistance R8, resistance R10, resistance R12, resistance R14, resistance R18, electric capacity C10, electric capacity C12, electrochemical capacitor C11, triode Q1 and voltage dependent resistor (VDR) P4, the output terminal of described Signal-regulated kinase (4) is connected with the inverting input of operational amplifier U3, the in-phase input end ground connection of operational amplifier U3, the inverting input of operational amplifier U3 is connected with the output terminal of operational amplifier U3 through electric capacity C10, the output terminal of operational amplifier U3 is connected with the base stage of triode Q1 through resistance R10, the base stage of triode Q1 is through electric capacity C12 ground connection, the collector of triode Q1 meets voltage V+ through resistance R12, the emitter of triode Q1 is connected with the positive pole of electrochemical capacitor C11 through resistance R14, the negative pole of electrochemical capacitor C11 is through resistance R18 ground connection, voltage dependent resistor (VDR) P4 and electrochemical capacitor C11 is in parallel, the inverting input of operational amplifier U3 is connected with the negative pole of electrochemical capacitor C11 through resistance R8, the two ends of voltage dependent resistor (VDR) P4 output signal A0+ and signal A0-respectively and send output wiring terminal (7) to the ER effect of described transmitter.
6. the current true virtual value transmitter of the AC/DC universal according to claim 1 or 2 or 3, it is characterized in that described power module (6) comprises voltage dependent resistor (VDR) P2, voltage dependent resistor (VDR) P3, inductance L 1 ~ inductance L 4, fuse FUSE, power transfer module T1, high-voltage capacitance C1, high-voltage capacitance C2, electrochemical capacitor C3 ~ electrochemical capacitor C6, the two ends of voltage dependent resistor (VDR) P2 are connected with the two ends of transmitter input power respectively, one end of voltage dependent resistor (VDR) P2 is connected with one end of voltage dependent resistor (VDR) P3 and one end of fuse FUSE through inductance L 1, the other end of fuse FUSE is connected with the power input VIN of power transfer module T1, the other end of voltage dependent resistor (VDR) P2 is connected with the other end of voltage dependent resistor (VDR) P3 and the earth terminal of power transfer module T1 through inductance L 2, high-voltage capacitance C1 is connected between the power input VIN of power transfer module T1 and the power supply output cathode end+V0 of power transfer module T1, high-voltage capacitance C2 is connected between the earth terminal of power transfer module T1 and the power supply output negative pole end-V0 of power transfer module T1, the power supply output cathode end+V0 of power transfer module T1 is through inductance L 3 output voltage V+, the power supply output negative pole end-V0 of power transfer module T1 is through inductance L 4 output voltage V-, the two ends of inductance L 3 respectively with the positive pole of electrochemical capacitor C3, the positive pole of electrochemical capacitor C4 is connected, the negative pole of electrochemical capacitor C3, the negative pole of electrochemical capacitor C4 all exports ground end 0V and is connected with the power supply of power transfer module T1, the two ends of inductance L 4 respectively with the negative pole of electrochemical capacitor C5, the negative pole of electrochemical capacitor C6 is connected, the positive pole of electrochemical capacitor C5, the positive pole of electrochemical capacitor C6 all exports ground end 0V and is connected with the power supply of power transfer module T1.
7. the current true virtual value transmitter of the AC/DC universal according to claim 1 or 2 or 3, it is characterized in that comprising first line plate (8) and the second wiring board (9), described current signal sampling module (2), RMS conversion module (3), Signal-regulated kinase (4), ER effect send output module (5) and power module (6) all to have three groups, the power module (6) of three groups and current signal sampling module (2) are installed on described first line plate (8), first line plate (8) is also provided with three contact pins (10), each power module (6) organized, current signal sampling module (2) and contact pin (10) are arranged in a row, and the output terminal of power module (6) and the output terminal of current signal sampling module (2) of each group are connected with the contact pin (10) of affiliated group respectively, the RMS conversion module (3) of three groups, Signal-regulated kinase (4) and ER effect send output module (5) to be installed on described the second wiring board (9), second wiring board (9) is also provided with three female seats (11), the RMS conversion module (3) of each group, Signal-regulated kinase (4), ER effect send output module (5) and female seat (11) to be arranged in a row, the RMS conversion module (3) of each group, Signal-regulated kinase (4) and ER effect send the input end of the operating voltage input end of output module (5) and RMS conversion module (3) to be connected with the female seat (11) of affiliated group respectively, three female seats (11) on second wiring board (9) and three contact pins (10) on first line plate (8) respectively one_to_one corresponding are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420674731.XU CN204241544U (en) | 2014-11-13 | 2014-11-13 | The current true virtual value transmitter of AC/DC universal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420674731.XU CN204241544U (en) | 2014-11-13 | 2014-11-13 | The current true virtual value transmitter of AC/DC universal |
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| CN204241544U true CN204241544U (en) | 2015-04-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502673A (en) * | 2014-11-13 | 2015-04-08 | 浙江涵普电力科技有限公司 | AC-DC general current true RMS transmitter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502673A (en) * | 2014-11-13 | 2015-04-08 | 浙江涵普电力科技有限公司 | AC-DC general current true RMS transmitter |
| CN104502673B (en) * | 2014-11-13 | 2017-07-14 | 浙江涵普电力科技有限公司 | The current true virtual value transmitter of AC/DC universal |
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