CN105388811A - Intelligent electric meter control system based on operational amplifier-type information transmission circuit - Google Patents
Intelligent electric meter control system based on operational amplifier-type information transmission circuit Download PDFInfo
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- CN105388811A CN105388811A CN201510848513.2A CN201510848513A CN105388811A CN 105388811 A CN105388811 A CN 105388811A CN 201510848513 A CN201510848513 A CN 201510848513A CN 105388811 A CN105388811 A CN 105388811A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/23—Pc programming
- G05B2219/23038—Select function by amplitude of analog value, potentiometer, resistor taps
Abstract
The invention discloses an intelligent electric meter control system based on an operational amplifier-type information transmission circuit. The intelligent electric meter control system mainly consist of a processor; an information acquisition unit; an analysis unit and a signal classifying unit which are both connected with the processor; a signal confirming unit connected with the signal classifying unit; a protection unit and a selection unit which are both connected with the signal confirming unit; and a display unit connected with the selection unit. The intelligent electric meter control system is characterized in that an operational amplifier-type information transmission circuit is further connected in series between the signal classifying unit and the signal confirming unit; and a digital strain circuit is further connected in series between the signal acquisition unit and the processor. With the operational amplifier-type information transmission circuit, the circuit unit has the functions of effective amplification of signals outputted by the signal classifying unit, load control and the like, the accuracy of the signal output of the intelligent electric meter control system is therefore improved, and no leakage of privacy information at a user side can be effectively ensured.
Description
Technical field
The present invention relates to electrical equipment technical field, specifically refer to a kind of intelligent electric meter control system based on operation amplifier formula information transmission circuit.
Background technology
At present, the development built along with China's intelligent grid, people are also increasing substantially to the demand of intelligent electric meter.But existing intelligent electric meter, because of the imperfection of its control system, easily cause the details of user to be revealed to Utilities Electric Co. inadvertently, and the leakage of these information may bring serious consequence to consumer.Therefore, provide a kind of and can guarantee that the privacy of user is not then seemed excellent in important by the control system of the intelligent electric meter revealed.
Summary of the invention
The object of the invention is to overcome intelligent electric meter of the prior art, because of the imperfection of its control system, easily reveal the defect of privacy of user, the invention provides a kind of intelligent electric meter control system based on operation amplifier formula information transmission circuit.
The present invention is achieved through the following technical solutions: a kind of intelligent electric meter control system based on operation amplifier formula information transmission circuit, primarily of processor, information acquisition unit, the analytic unit be all connected with processor and signal sort out unit, the signal confirmation unit that unit is connected is sorted out with signal, the protected location be all connected with signal confirmation unit and selection unit, the display unit be connected with selection unit, be serially connected in the operation amplifier formula information transmission circuit between signal classification unit and signal confirmation unit, and be serially connected in being made up of digital strain circuit between signal gathering unit and processor.
Described operation amplifier formula information transmission circuit is by triode VT3, triode VT4, triode VT5, amplifier P2, amplification chip U2, N pole is connected with the collector of triode VT3, the diode D7 that P pole is connected with the base stage of triode VT3 after polar capacitor C7, positive pole is connected with the N pole of diode D7 after resistance R16, the polar capacitor C9 that negative pole is connected with the IN2 pin of amplification chip U2 after resistance R17, P pole is connected with the P pole of diode D7 after resistance R14, the diode D8 that N pole is connected with the AMP pin of amplification chip U2 after polar capacitor C10 through resistance R18, negative pole is connected with the P pole of diode D8, the polar capacitor C8 that positive pole is connected with the emitter of triode VT3, P pole is connected with the P pole of diode D7 after resistance R13, the diode D9 that N pole is connected with the negative pole of amplifier P2 after resistance R15, one end is connected with the negative pole of polar capacitor C9, the resistance R19 that the other end is connected with the VC pin of amplification chip U2, N pole is connected with the VC pin of amplification chip U2 after resistance R20, the diode D10 that P pole is connected with the base stage of triode VT5 after resistance R21, positive pole is connected with the output terminal of amplifier P2, the polar capacitor C11 that negative pole is connected with the emitter of triode VT5 after resistance R22, and P pole is connected with the OUT pin of amplification chip U2, the diode D11 that N pole is connected with the collector of triode VT5 forms, the IN pin of described amplification chip U2 is connected with the collector of triode VT4, its AMP pin is connected with the output terminal of amplifier P2, its GND pin ground connection, the base stage of described triode VT4 is connected with the N pole of diode D9, its emitter is connected with the positive pole of amplifier P2, the negative pole of described polar capacitor C7 as operation amplifier formula information transmission circuit input end and sort out unit with signal and be connected, the collector of described triode VT5 as operation amplifier formula information transmission circuit output terminal and be connected with signal confirmation unit.
Described digital strain circuit is by process chip U1, amplifier P1, triode VT1, triode VT2, negative pole is connected with the base stage of triode VT2, positive pole is in turn through polar capacitor C5 that resistance R2 is connected with the VDD pin of process chip U1 after diode D1 and resistance R8, one end is connected with the base stage of triode VT2, the resistance R5 that the other end is connected with the EOC pin of process chip U1, be connected with information acquisition unit as the input end of digital strain unit while one end is connected with the positive pole of polar capacitor C5, the resistance R3 that the other end is connected with the REF pin of process chip U1, minus earth, the polar capacitor C1 that positive pole is connected with the VDD pin of process chip U1 after resistance R4, N pole is connected with the emitter of triode VT2 after resistance R6, P pole is in turn through diode D3 that resistance R7 is connected with the OUT pin of process chip U1 after diode D4 and resistance R10, positive pole is connected with the collector of triode VT2, the polar capacitor C2 that negative pole is connected with the P pole of diode D3 after resistance R1, positive pole is connected with the IN pin of process chip U1, the polar capacitor C6 of minus earth, N pole is connected with the VDD pin of process chip U1 after inductance L, the diode D2 that P pole is connected with the DIN pin of process chip U1, positive pole is connected with the N pole of diode D2 after resistance R9, the polar capacitor C3 that negative pole is connected with the base stage of triode VT1, positive pole is connected with the emitter of triode VT1, the polar capacitor C4 that negative pole is connected with the CS pin of process chip U1 after diode D5, and P pole is connected with the collector of triode VT1 after resistance R11, the diode D6 that N pole is connected with the output terminal of amplifier P1 after resistance R12 forms, the negative pole of described amplifier P1 is connected with the OUT pin of process chip U1, its positive pole is connected with the negative pole of polar capacitor C4, its output terminal as digital strain circuit output terminal and be connected with processor, the IN pin of described process chip U1 is connected with the N pole of diode D3, its GND pin ground connection.
Further, described signal confirmation unit is also connected with SIM unit; Described selection unit is also connected with encrypted tunnel; For guaranteeing best result of use of the present invention, described process chip U1 is MAX1494 integrated chip; Described amplification chip U2 is LA6324 integrated chip.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) operation amplifier formula information transmission circuit of the present invention can be sorted out to signal signal that unit exports and amplifies and the effect such as control load, thus improve the accuracy of native system signal output, and effectively can guarantee that the privacy information of user side is not revealed.
(2) the different load data message of current through meter can be converted to different signal codes by digital strain unit of the present invention, thus effectively ensure that the privacy information of user side is not revealed.
(3) signal of the present invention sorts out the signal wave information decomposition generated after processor can be changed by unit is privacy information and general information, thus improve intelligent electric meter control system of the present invention to the accuracy of user profile Classification Management, ensure that the privacy information of user side is not revealed simultaneously.
Accompanying drawing explanation
Fig. 1 is one-piece construction block diagram of the present invention.
Fig. 2 is the electrical block diagram of digital strain circuit of the present invention.
Fig. 3 is the electrical block diagram of operation amplifier formula information transmission circuit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, the present invention is primarily of information acquisition unit, processor, the analytic unit be all connected with processor and signal sort out unit, the signal confirmation unit that unit is connected is sorted out with signal, the protected location be all connected with signal confirmation unit and SIM unit and selection unit, the display unit be all connected with selection unit and encrypted tunnel, input end is connected with information acquisition unit, the digital strain unit that its output terminal is connected with processor, and input end is sorted out unit with signal and is connected, the operation amplifier formula information transmission circuit that its output terminal is connected with signal confirmation unit forms.
During enforcement, the different load data message of the current through meter that information acquisition unit gathers by digital strain circuit of the present invention is converted to different signal codes, described analytic unit measures load parameter by analyzing this signal code, to draw the information such as electrical equipment kind and electricity of electricity consumption.Simultaneously, system thresholds is provided with in this analytic unit, draw private data and general data by comparing with threshold data, this analytic unit analysis is transferred to two groups that draw different information datas is simultaneously transferred to signal after processor carries out information processing and sorts out unit.Described signal is sorted out unit and is then exported after privacy information and general information classification packing through operation amplifier formula information transmission circuit.Described operation amplifier formula information transmission circuit can sort out the effects such as the signal that unit exports effectively amplifies, control load to signal, thus improves the accuracy that the signal confirmation unit signal that is connected with operation amplifier formula information transmission circuit exports.Information confirmation unit is reaffirmed simultaneously, thus is left in protected location by privacy information.
In order to better implement the present invention, described SIM unit is arranged in confirmation unit, is also provided with signal receiver and signal projector in this SIM unit.When user allows, user can send and allow code to SIM unit, and this SIM unit just can send and allow access instruction and confirm that password is to signal confirmation unit, and the data in described protected location can send through encrypted tunnel.Arranging of SIM unit can also facilitate the metering situation of user's real-time query ammeter and arrange payment reminding service simultaneously.
As shown in Figure 2, described digital strain circuit by process chip U1, amplifier P1, triode VT1, triode VT2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, polar capacitor C5, polar capacitor C6, diode D1, diode D2, diode D3, diode D4, diode D5, and diode D6 forms.
During connection, the negative pole of polar capacitor C5 is connected with the base stage of triode VT2, its positive pole is connected with the P pole of diode D1 after resistance R2, and the N pole of described diode D1 is connected with the VDD pin of process chip U1 after resistance R8.One end of resistance R5 is connected with the base stage of triode VT2, the other end is connected with the EOC pin of process chip U1.While one end of resistance R3 is connected with the positive pole of polar capacitor C5 as the input end of digital strain unit and be connected with information acquisition unit, the other end is connected with the REF pin of process chip U1.
Wherein, the minus earth of polar capacitor C1, positive pole are connected with the VDD pin of process chip U1 after resistance R4.The N pole of diode D3 is connected with the emitter of triode VT2 after resistance R6, its P pole is connected with the P pole of diode D4 after resistance R7, and the N pole of described diode D4 is connected with the OUT pin of process chip U1 after resistance R10.The positive pole of polar capacitor C2 is connected with the collector of triode VT2, negative pole is connected with the P pole of diode D3 after resistance R1.The positive pole of polar capacitor C6 is connected with the IN pin of process chip U1, minus earth.
Meanwhile, the N pole of diode D2 is connected with the VDD pin of process chip U1 after inductance L, P pole is connected with the DIN pin of process chip U1.The positive pole of polar capacitor C3 is connected with the N pole of diode D2 after resistance R9, negative pole is connected with the base stage of triode VT1.The positive pole of polar capacitor C4 is connected with the emitter of triode VT1, its negative pole is connected with the N pole of diode D5, and the P pole of described diode D5 is then connected with the CS pin of process chip U1.The P pole of diode D6 is connected with the collector of triode VT1 after resistance R11, N pole is connected with the output terminal of amplifier P1 after resistance R12.
The negative pole of described amplifier P1 is connected with the OUT pin of process chip U1, its positive pole is connected with the negative pole of polar capacitor C4, its output terminal as digital strain circuit output terminal and be connected with processor; The IN pin of described process chip U1 is connected with the N pole of diode D3, its GND pin ground connection.
Different load data message is converted to different signal codes to better realize by digital strain circuit of the present invention, and the process chip U1 in the present invention have employed the MAX1494 integrated chip of 8.Resistance R3 and diode D1 and inductance L are wherein connected in series between the REF pin of MAX1494 integrated chip and DIN pin to realize the gain of different pieces of information signal, EOC pin and resistance R5 and the element such as triode VT2 and diode D3 form input bridge, and this input bridge is used for the difference of detection signal.The different signal code generated after the conversion of MAX1494 integrated chip amplifies output channel by the signal formed by amplifier P1 and the element such as diode D5 and polar capacitor C4 after CS pin and OUT pin and exports.
As shown in Figure 3, described operation amplifier formula information transmission circuit by triode VT3, triode VT4, triode VT5, amplifier P2, amplification chip U2, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, polar capacitor C7, polar capacitor C8, polar capacitor C9, polar capacitor C10, polar capacitor C11, diode D7, diode D8, diode D9, diode D10, and diode D11 forms.
During connection, the N pole of diode D7 is connected with the collector of triode VT3, P pole is connected with the base stage of triode VT3 after polar capacitor C7.The positive pole of polar capacitor C9 is connected with the N pole of diode D7 after resistance R16, negative pole is connected with the IN2 pin of amplification chip U2 after resistance R17.The P pole of diode D8 is connected with the P pole of diode D7 after resistance R14, N pole is connected with the AMP pin of amplification chip U2 after polar capacitor C10 through resistance R18.
Wherein, the positive pole of polar capacitor C8 is connected with the emitter of triode VT3, negative pole is connected with the P pole of diode D8.The P pole of diode D9 is connected with the P pole of diode D7 after resistance R13, N pole is connected with the negative pole of amplifier P2 after resistance R15.One end of resistance R19 is connected with the negative pole of polar capacitor C9, the other end is connected with the VC pin of amplification chip U2.The N pole of diode D10 is connected with the VC pin of amplification chip U2 after resistance R20, P pole is connected with the base stage of triode VT5 after resistance R21.The positive pole of polar capacitor C11 is connected with the output terminal of amplifier P2, negative pole is connected with the emitter of triode VT5 after resistance R22.The P pole of diode D11 is connected with the OUT pin of amplification chip U2, N pole is connected with the collector of triode VT5.
The IN pin of described amplification chip U2 is connected with the collector of triode VT4, its AMP pin is connected with the output terminal of amplifier P2, its GND pin ground connection; The base stage of described triode VT4 is connected with the N pole of diode D9, its emitter is connected with the positive pole of amplifier P2; The negative pole of described polar capacitor C7 as operation amplifier formula information transmission circuit input end and sort out unit with signal and be connected; The collector of described triode VT5 as operation amplifier formula information transmission circuit output terminal and be connected with signal confirmation unit.For guaranteeing smooth enforcement of the present invention, described amplification chip U2 is LA6324 integrated chip.
As mentioned above, just the present invention can well be realized.
Claims (6)
1. the intelligent electric meter control system based on operation amplifier formula information transmission circuit, primarily of processor, information acquisition unit, the analytic unit be all connected with processor and signal sort out unit, the signal confirmation unit that unit is connected is sorted out with signal, the protected location be all connected with signal confirmation unit and selection unit, and the display unit be connected with selection unit forms; It is characterized in that: sort out between unit and signal confirmation unit at signal and be also serially connected with operation amplifier formula information transmission circuit, between signal gathering unit and processor, be also serially connected with digital strain circuit.
2. a kind of intelligent electric meter control system based on operation amplifier formula information transmission circuit according to claim 1, it is characterized in that, described operation amplifier formula information transmission circuit is by triode VT3, triode VT4, triode VT5, amplifier P2, amplification chip U2, N pole is connected with the collector of triode VT3, the diode D7 that P pole is connected with the base stage of triode VT3 after polar capacitor C7, positive pole is connected with the N pole of diode D7 after resistance R16, the polar capacitor C9 that negative pole is connected with the IN2 pin of amplification chip U2 after resistance R17, P pole is connected with the P pole of diode D7 after resistance R14, the diode D8 that N pole is connected with the AMP pin of amplification chip U2 after polar capacitor C10 through resistance R18, negative pole is connected with the P pole of diode D8, the polar capacitor C8 that positive pole is connected with the emitter of triode VT3, P pole is connected with the P pole of diode D7 after resistance R13, the diode D9 that N pole is connected with the negative pole of amplifier P2 after resistance R15, one end is connected with the negative pole of polar capacitor C9, the resistance R19 that the other end is connected with the VC pin of amplification chip U2, N pole is connected with the VC pin of amplification chip U2 after resistance R20, the diode D10 that P pole is connected with the base stage of triode VT5 after resistance R21, positive pole is connected with the output terminal of amplifier P2, the polar capacitor C11 that negative pole is connected with the emitter of triode VT5 after resistance R22, and P pole is connected with the OUT pin of amplification chip U2, the diode D11 that N pole is connected with the collector of triode VT5 forms, the IN pin of described amplification chip U2 is connected with the collector of triode VT4, its AMP pin is connected with the output terminal of amplifier P2, its GND pin ground connection, the base stage of described triode VT4 is connected with the N pole of diode D9, its emitter is connected with the positive pole of amplifier P2, the negative pole of described polar capacitor C7 as operation amplifier formula information transmission circuit input end and sort out unit with signal and be connected, the collector of described triode VT5 as operation amplifier formula information transmission circuit output terminal and be connected with signal confirmation unit.
3. a kind of intelligent electric meter control system based on operation amplifier formula information transmission circuit according to claim 2, it is characterized in that, described digital strain circuit is by process chip U1, amplifier P1, triode VT1, triode VT2, negative pole is connected with the base stage of triode VT2, positive pole is in turn through polar capacitor C5 that resistance R2 is connected with the VDD pin of process chip U1 after diode D1 and resistance R8, one end is connected with the base stage of triode VT2, the resistance R5 that the other end is connected with the EOC pin of process chip U1, be connected with information acquisition unit as the input end of digital strain unit while one end is connected with the positive pole of polar capacitor C5, the resistance R3 that the other end is connected with the REF pin of process chip U1, minus earth, the polar capacitor C1 that positive pole is connected with the VDD pin of process chip U1 after resistance R4, N pole is connected with the emitter of triode VT2 after resistance R6, P pole is in turn through diode D3 that resistance R7 is connected with the OUT pin of process chip U1 after diode D4 and resistance R10, positive pole is connected with the collector of triode VT2, the polar capacitor C2 that negative pole is connected with the P pole of diode D3 after resistance R1, positive pole is connected with the IN pin of process chip U1, the polar capacitor C6 of minus earth, N pole is connected with the VDD pin of process chip U1 after inductance L, the diode D2 that P pole is connected with the DIN pin of process chip U1, positive pole is connected with the N pole of diode D2 after resistance R9, the polar capacitor C3 that negative pole is connected with the base stage of triode VT1, positive pole is connected with the emitter of triode VT1, the polar capacitor C4 that negative pole is connected with the CS pin of process chip U1 after diode D5, and P pole is connected with the collector of triode VT1 after resistance R11, the diode D6 that N pole is connected with the output terminal of amplifier P1 after resistance R12 forms, the negative pole of described amplifier P1 is connected with the OUT pin of process chip U1, its positive pole is connected with the negative pole of polar capacitor C4, its output terminal as digital strain circuit output terminal and be connected with processor, the IN pin of described process chip U1 is connected with the N pole of diode D3, its GND pin ground connection.
4. a kind of intelligent electric meter control system based on operation amplifier formula information transmission circuit according to claim 3, is characterized in that, described selection unit is also connected with encrypted tunnel.
5. a kind of intelligent electric meter control system based on operation amplifier formula information transmission circuit according to claim 4, it is characterized in that, described signal confirmation unit is also connected with SIM unit.
6. a kind of intelligent electric meter control system based on operation amplifier formula information transmission circuit according to claim 5, it is characterized in that, described process chip U1 is MAX1494 integrated chip; Described amplification chip U2 is LA6324 integrated chip.
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| CN201510848513.2A CN105388811A (en) | 2015-11-27 | 2015-11-27 | Intelligent electric meter control system based on operational amplifier-type information transmission circuit |
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| CN201510848513.2A CN105388811A (en) | 2015-11-27 | 2015-11-27 | Intelligent electric meter control system based on operational amplifier-type information transmission circuit |
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| CN105005348A (en) * | 2014-11-25 | 2015-10-28 | 成都颉盛科技有限公司 | Light beam excitation amplification type field intensity detection current source |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004164583A (en) * | 2002-07-24 | 2004-06-10 | Korea Electric Power Corp | Remote meter reading system using grouped data structure |
| CN202562673U (en) * | 2012-04-20 | 2012-11-28 | 湖南省交通科学研究院 | Strain acquisition system based on voltage compensation |
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| CN105005348A (en) * | 2014-11-25 | 2015-10-28 | 成都颉盛科技有限公司 | Light beam excitation amplification type field intensity detection current source |
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