CN104460455A - Electric power line monitoring sampling reference frequency conversion circuit with power circuit - Google Patents
Electric power line monitoring sampling reference frequency conversion circuit with power circuit Download PDFInfo
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- CN104460455A CN104460455A CN201410747770.2A CN201410747770A CN104460455A CN 104460455 A CN104460455 A CN 104460455A CN 201410747770 A CN201410747770 A CN 201410747770A CN 104460455 A CN104460455 A CN 104460455A
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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
- G05B19/048—Monitoring; Safety
Abstract
The invention provides an electric power line monitoring sampling reference frequency conversion circuit with a power circuit. The electric power line monitoring sampling reference frequency conversion circuit comprises a sampling input circuit, a reference signal setting circuit, a frequency conversion processing circuit and the power circuit. The frequency conversion signal output end of the sampling input circuit is connected with the signal input end of the frequency conversion processing circuit. The signal output end of the frequency conversion processing circuit is connected with the analog-digital conversion signal input end of a central processing unit. The reference voltage output end of the reference signal setting circuit is connected with the reference voltage input end of the sampling input circuit. The reference signal output end of the reference signal setting circuit is connected with the reference signal input end of the frequency conversion processing circuit. The output end of the power circuit is connected with the power supply input end of the central processing unit.
Description
Technical field
The present invention relates to electronic circuit field, particularly relate to a kind of power monitoring circuit sample reference frequency-conversion circuit with power circuit.
Background technology
Society; national grid coverage rate generally improves; bring great convenience to the productive life of people; while electrical network coverage rate improves; safe operation of electric network and stable supervisory system are not promoted timely; even if having developed some power monitoring circuit equipment; its serviceable life is short; saltus step is serious; can not overvoltage protection, can not prevent filtering from disturbing, so cause power monitoring circuit error; can not accurately judge power circuit problem, so need those skilled in the art badly to solve corresponding technical matters.
Summary of the invention
The present invention is intended at least solve the technical matters existed in prior art, especially innovatively proposes a kind of power monitoring circuit sample reference frequency-conversion circuit with power circuit.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of power monitoring circuit sample reference frequency-conversion circuit with power circuit, its key is, comprising: circuit of sampling input, reference signal initialization circuit, frequency conversion process circuit, power circuit
Circuit of sampling input signal frequency conversion signal output part rate of connections conversion process circuit signal input, described frequency conversion process circuit signal output terminal connects central processing unit analog to digital conversion signal input part, reference signal initialization circuit reference voltage output terminal connects circuit of sampling input reference voltage input terminal, described reference signal initialization circuit reference signal output terminal rate of connections conversion process circuit reference signal input part, described power circuit output end connects central processing unit energization input;
Described power circuit comprises: the first voltage stabilizer, the second inductance, the 20 resistance, the 19 electric capacity, the 9th electric capacity,
Power end connects the first voltage stabilizer input end, described first output end of voltage stabilizer connects second inductance one end, the described second inductance other end connects the 20 resistance one end, the described 20 resistance other end connects the 19 electric capacity one end and the 9th electric capacity one end, the described 20 resistance other end also connects central processing unit energization input, the described 19 electric capacity other end and the 9th electric capacity other end ground connection.
The beneficial effect of technique scheme is: by circuit of sampling input, reference signal initialization circuit, frequency conversion process circuit coordinated, ensures the transmission of analog input signal.
The described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described circuit of sampling input comprises: the 14 resistance, the 19 resistance, the 4th amplifier, the 6th high tension silicon rectifier,
Electric power signal analog quantity first input end connects the 14 resistance one end, the described 14 resistance other end connects the 6th high tension silicon rectifier first input end, electric power signal analog quantity second input end connects the 6th high tension silicon rectifier second input end, described 6th high tension silicon rectifier the 3rd output terminal connects the 19 resistance one end, the described 19 resistance other end connects the 6th high tension silicon rectifier the 4th output terminal, described 19 resistance one end also connects the 4th amplifier anode, described 4th amplifier minus earth;
Described circuit of sampling input also comprises: the 34 resistance, the 39 resistance, the 14 amplifier, the 7th high tension silicon rectifier,
Electric power signal analog quantity first input end connects the 34 resistance one end, the described 34 resistance other end connects the 7th high tension silicon rectifier first input end, electric power signal analog quantity second input end connects the 7th high tension silicon rectifier second input end, described 7th high tension silicon rectifier the 3rd output terminal connects the 39 resistance one end, the described 39 resistance other end connects the 7th high tension silicon rectifier the 4th output terminal, described 39 resistance one end also connects the 14 amplifier anode, described 14 amplifier minus earth.
The beneficial effect of technique scheme is: circuit of sampling input stable signal transmission is reliable.
The described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described reference signal initialization circuit comprises: the 23 resistance, the 24 resistance, the 25 resistance, the 26 resistance, the 15 diode, the 5th electric capacity, the 11 electric capacity, the 13 electric capacity, the 14 electric capacity, the 5th amplifier, the 6th amplifier
Power end connects the 23 resistance one end, the described 23 resistance other end connects the 15 diode cathode, described 15 diode cathode ground connection, the described 23 resistance other end also connects the 5th electric capacity one end, the described 5th electric capacity other end connects the 25 resistance one end and ground connection, the described 25 resistance other end connects the 24 resistance one end, the described 24 resistance other end connects the 5th electric capacity one end, described 24 resistance one end also connects the 11 electric capacity one end, described 11 electric capacity other end ground connection, described 11 electric capacity one end also connects the 13 electric capacity one end, described 13 electric capacity other end ground connection, described 24 resistance one end also connects the 26 resistance one end, the described 26 resistance other end connects the 14 electric capacity one end, described 14 electric capacity other end ground connection, described 13 electric capacity one end also connects the 5th amplifier anode and the 6th amplifier anode, described 5th amplifier negative pole connects the 5th amplifier out, described 6th amplifier negative pole connects the 6th amplifier out, described 5th amplifier out connects the 6th high tension silicon rectifier the 4th output terminal, described 6th amplifier out connects the 7th high tension silicon rectifier the 4th output terminal.
The beneficial effect of technique scheme is: reference signal initialization circuit arranges reference signal value, is transferred in circuit of sampling input, provides reference signal value, is transferred to central processing unit for comparing output voltage.
The described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described frequency conversion process circuit also comprises: the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, the 29 resistance, the 27 resistance, the 30 resistance, the 11 diode, the 12 diode, the 15 electric capacity, the first amplifier, the second amplifier, the 3rd amplifier
4th amplifier out connects the 15 resistance one end, the described 15 resistance other end connects the second amplifier anode and the 16 resistance one end respectively, described second amplifier negative pole connects the second amplifier out, described second amplifier out connects the 29 resistance one end, the described 29 resistance other end connects the 11 diode cathode respectively, 12 diode cathode and the 15 electric capacity one end, described 11 diode cathode, after 12 diode cathode is connected with the 15 electric capacity other end, connect the first amplifier negative pole again, described first amplifier anode connects the 15 electric capacity one end, described first amplifier out connects the 30 resistance one end, the described 30 resistance other end connects power supply, described first amplifier out also connects central processing unit, described 11 diode cathode, after 12 diode cathode is connected with the 15 electric capacity other end, also connect the 27 resistance one end, the described 27 resistance other end connects the 3rd amplifier out, described 3rd amplifier out also connects the 3rd amplifier negative pole, described 3rd amplifier anode connects one end after the 17 resistance and the 18 resistor coupled in parallel, described 17 resistance connects the 14 amplifier out.
The beneficial effect of technique scheme is: frequency conversion process circuit design circuit location wiring is reasonable, and carrying out frequency processing can separate with clock frequency.
The described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described frequency conversion process circuit also comprises: the 7th amplifier, the 8th amplifier, the 9th amplifier, the 21 resistance, the 22 resistance, the 28 resistance, the 13 diode, the 14 diode, the 8th electric capacity
14 amplifier out connects the 8th amplifier anode, described 8th amplifier negative pole connects the 8th amplifier out, described 8th amplifier out also connects the 22 resistance one end, the 22 resistance other end connects the 13 diode cathode, described 13 diode cathode connects the 21 resistance one end and the 14 diode cathode respectively, described 14 diode cathode connects the 13 diode cathode and the 8th electric capacity one end, the described 8th electric capacity other end connects the 14 diode cathode and the 7th amplifier negative pole, described 8th electric capacity one end also connects the 7th amplifier anode, described 7th amplifier out connects the 28 resistance one end, the described 28 resistance other end connects power supply, the 21 resistance other end connects the 9th amplifier out, described 9th amplifier out also connects the 9th amplifier negative pole.
The beneficial effect of technique scheme is: frequency conversion process circuit design circuit location wiring is reasonable, and carrying out frequency processing can separate with clock frequency.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the power monitoring circuit sample reference frequency-conversion circuit general illustration of the present invention with power circuit;
Fig. 2 is the power monitoring circuit sample reference frequency-conversion circuit switching value input circuit schematic diagram of the present invention with power circuit;
Fig. 3 is the power monitoring circuit sample reference frequency-conversion circuit switching value output circuit schematic diagram of the present invention with power circuit;
Fig. 4 is the power monitoring circuit sample reference frequency-conversion circuit switching value output circuit schematic diagram of the present invention with power circuit;
Fig. 5 is the power monitoring circuit sample reference frequency-conversion circuit reference signal initialization circuit schematic diagram of the present invention with power circuit;
Fig. 6 is the power monitoring circuit sample reference frequency-conversion circuit frequency conversion process circuit diagram of the present invention with power circuit;
Fig. 7 is the power monitoring circuit sample reference frequency-conversion circuit frequency conversion process circuit diagram of the present invention with power circuit;
Fig. 8 is the power monitoring circuit sample reference frequency-conversion circuit power circuit schematic diagram of the present invention with power circuit;
Fig. 9 is the power monitoring circuit sample reference frequency-conversion circuit anti-jump loop schematic diagram of the present invention with power circuit.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In describing the invention, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figure 1, the invention provides a kind of power monitoring circuit sample reference frequency-conversion circuit with power circuit, its key is, comprising: switching value input circuit, simulated measurement input circuit, switching value output circuit, alarm module, central processing unit,
Switching value input circuit signal output part connects central processing unit on-off model input end, described central processing unit on-off model output terminal connecting valve amount output circuit signal input part, simulated measurement input circuit connects central processing unit analog to digital conversion signal input part by analog to digital conversion circuit, and described central processing unit display output terminal connects alarm module.
The beneficial effect of technique scheme is: by switching value input circuit and the real-time power supply situation of simulated measurement input circuit transferring electric power circuit, ensure power circuit steady operation, by alarm module real-time reminding custom power circuit using state, circuit design is reasonable, moderate cost.
As shown in Figure 2, the described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described switching value input circuit comprises: the 11 resistance, the 12 resistance, the 13 resistance, the 16 diode, the first photoelectric coupled circuit,
On-off circuit one end connects the 11 resistance one end, the described 11 resistance other end connects the 12 resistance one end, the described 12 resistance other end connects the first photoelectric coupled circuit first input end, described first photoelectric coupled circuit the 3rd input end connects the 16 diode cathode, described 16 diode cathode also connects power supply, described 16 diode cathode connects the 12 resistance other end, described first photoelectric coupled circuit the 6th output terminal connects power supply, and described first photoelectric coupled circuit the 4th output terminal connects central processing unit signal input part.
The beneficial effect of technique scheme is: described switching value input circuit gathers On-off signal signal, ensures stable signal transmission.
As shown in Figure 3, the described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described switching value output circuit comprises: the 41 resistance, the second photoelectric coupled circuit, relay,
41 resistance one end connects central processing unit switching value output signal end, the described 41 resistance other end connects the second photoelectric coupled circuit first input end, described second photoelectric coupled circuit the 3rd input end connects ground, and described second photoelectric coupled circuit the 6th output terminal connects relay normally closed contact.
The beneficial effect of technique scheme is: by central processing unit transmitting switch amount output signal, ensured the stability of signal transmission by switching value output circuit.
As shown in figs. 4-7, the described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described simulated measurement input circuit comprises: circuit of sampling input, reference signal initialization circuit, frequency conversion process circuit,
Circuit of sampling input signal frequency conversion signal output part rate of connections conversion process circuit signal input, described frequency conversion process circuit signal output terminal connects central processing unit analog to digital conversion signal input part, reference signal initialization circuit reference voltage output terminal connects circuit of sampling input reference voltage input terminal, described reference signal initialization circuit reference signal output terminal rate of connections conversion process circuit reference signal input part.
The beneficial effect of technique scheme is: by circuit of sampling input, reference signal initialization circuit, frequency conversion process circuit coordinated, ensures the transmission of analog input signal.
The described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described circuit of sampling input comprises: the 14 resistance, the 19 resistance, the 4th amplifier, the 6th high tension silicon rectifier,
Electric power signal analog quantity first input end connects the 14 resistance one end, the described 14 resistance other end connects the 6th high tension silicon rectifier first input end, electric power signal analog quantity second input end connects the 6th high tension silicon rectifier second input end, described 6th high tension silicon rectifier the 3rd output terminal connects the 19 resistance one end, the described 19 resistance other end connects the 6th high tension silicon rectifier the 4th output terminal, described 19 resistance one end also connects the 4th amplifier anode, described 4th amplifier minus earth;
Described circuit of sampling input also comprises: the 34 resistance, the 39 resistance, the 14 amplifier, the 7th high tension silicon rectifier,
Electric power signal analog quantity first input end connects the 34 resistance one end, the described 34 resistance other end connects the 7th high tension silicon rectifier first input end, electric power signal analog quantity second input end connects the 7th high tension silicon rectifier second input end, described 7th high tension silicon rectifier the 3rd output terminal connects the 39 resistance one end, the described 39 resistance other end connects the 7th high tension silicon rectifier the 4th output terminal, described 39 resistance one end also connects the 14 amplifier anode, described 14 amplifier minus earth.
The beneficial effect of technique scheme is: circuit of sampling input stable signal transmission is reliable.
The described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described reference signal initialization circuit comprises: the 23 resistance, the 24 resistance, the 25 resistance, the 26 resistance, the 15 diode, the 5th electric capacity, the 11 electric capacity, the 13 electric capacity, the 14 electric capacity, the 5th amplifier, the 6th amplifier
Power end connects the 23 resistance one end, the described 23 resistance other end connects the 15 diode cathode, described 15 diode cathode ground connection, the described 23 resistance other end also connects the 5th electric capacity one end, the described 5th electric capacity other end connects the 25 resistance one end and ground connection, the described 25 resistance other end connects the 24 resistance one end, the described 24 resistance other end connects the 5th electric capacity one end, described 24 resistance one end also connects the 11 electric capacity one end, described 11 electric capacity other end ground connection, described 11 electric capacity one end also connects the 13 electric capacity one end, described 13 electric capacity other end ground connection, described 24 resistance one end also connects the 26 resistance one end, the described 26 resistance other end connects the 14 electric capacity one end, described 14 electric capacity other end ground connection, described 13 electric capacity one end also connects the 5th amplifier anode and the 6th amplifier anode, described 5th amplifier negative pole connects the 5th amplifier out, described 6th amplifier negative pole connects the 6th amplifier out, described 5th amplifier out connects the 6th high tension silicon rectifier the 4th output terminal, described 6th amplifier out connects the 7th high tension silicon rectifier the 4th output terminal.
The beneficial effect of technique scheme is: reference signal initialization circuit arranges reference signal value, is transferred in circuit of sampling input, provides reference signal value, is transferred to central processing unit for comparing output voltage.
The described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described frequency conversion process circuit also comprises: the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, the 29 resistance, the 27 resistance, the 30 resistance, the 11 diode, the 12 diode, the 15 electric capacity, the first amplifier, the second amplifier, the 3rd amplifier
4th amplifier out connects the 15 resistance one end, the described 15 resistance other end connects the second amplifier anode and the 16 resistance one end respectively, described second amplifier negative pole connects the second amplifier out, described second amplifier out connects the 29 resistance one end, the described 29 resistance other end connects the 11 diode cathode respectively, 12 diode cathode and the 15 electric capacity one end, described 11 diode cathode, after 12 diode cathode is connected with the 15 electric capacity other end, connect the first amplifier negative pole again, described first amplifier anode connects the 15 electric capacity one end, described first amplifier out connects the 30 resistance one end, the described 30 resistance other end connects power supply, described first amplifier out also connects central processing unit, described 11 diode cathode, after 12 diode cathode is connected with the 15 electric capacity other end, also connect the 27 resistance one end, the described 27 resistance other end connects the 3rd amplifier out, described 3rd amplifier out also connects the 3rd amplifier negative pole, described 3rd amplifier anode connects one end after the 17 resistance and the 18 resistor coupled in parallel, described 17 resistance connects the 14 amplifier out.
The beneficial effect of technique scheme is: frequency conversion process circuit design circuit location wiring is reasonable, and carrying out frequency processing can separate with clock frequency.
The described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, described frequency conversion process circuit also comprises: the 7th amplifier, the 8th amplifier, the 9th amplifier, the 21 resistance, the 22 resistance, the 28 resistance, the 13 diode, the 14 diode, the 8th electric capacity
14 amplifier out connects the 8th amplifier anode, described 8th amplifier negative pole connects the 8th amplifier out, described 8th amplifier out also connects the 22 resistance one end, the 22 resistance other end connects the 13 diode cathode, described 13 diode cathode connects the 21 resistance one end and the 14 diode cathode respectively, described 14 diode cathode connects the 13 diode cathode and the 8th electric capacity one end, the described 8th electric capacity other end connects the 14 diode cathode and the 7th amplifier negative pole, described 8th electric capacity one end also connects the 7th amplifier anode, described 7th amplifier out connects the 28 resistance one end, the described 28 resistance other end connects power supply, the 21 resistance other end connects the 9th amplifier out, described 9th amplifier out also connects the 9th amplifier negative pole.
The beneficial effect of technique scheme is: frequency conversion process circuit design circuit location wiring is reasonable, and carrying out frequency processing can separate with clock frequency.
As shown in Figure 8, the described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, also comprises power circuit, and described power circuit output end connects central processing unit energization input;
Described power circuit comprises: the first voltage stabilizer, the second inductance, the 20 resistance, the 19 electric capacity, the 9th electric capacity,
Power end connects the first voltage stabilizer input end, described first output end of voltage stabilizer connects second inductance one end, the described second inductance other end connects the 20 resistance one end, the described 20 resistance other end connects the 19 electric capacity one end and the 9th electric capacity one end, the described 20 resistance other end also connects central processing unit energization input, the described 19 electric capacity other end and the 9th electric capacity other end ground connection.
The beneficial effect of technique scheme is: the power supply that power-supplying circuit provides central processing unit stable exports, and circuit design is reasonable.
As shown in Figure 9, the described power monitoring circuit sample reference frequency-conversion circuit with power circuit, preferably, also comprise anti-jump loop, described anti-jump loop is connected with relay, described anti-jump loop comprises: the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, first relay, second relay, first diode, second diode, 3rd diode, 4th diode, 5th diode, 6th diode, 7th diode, 8th diode, 9th diode, tenth diode, first electric capacity, second electric capacity,
First relay normally open contact connects first resistance one end, the described first resistance other end connects second resistance one end, the second resistance other end connects the 3rd resistance one end, the described 3rd resistance other end connects the 4th resistance one end, the described 4th resistance other end connects the 9th resistance one end, the described 9th resistance other end connects the 4th diode cathode and the 6th diode cathode, the 4th resistance other end also connects the 3rd diode cathode and the 5th diode cathode, first relay normally closed contact connects the first diode cathode and first electric capacity one end, described first diode cathode connects the first electric capacity other end, described first electric capacity one end also connects the 3rd diode cathode and the 4th diode cathode, described 5th diode cathode connects the 6th diode cathode, the described 9th resistance other end also connects the tenth resistance other end,
Second relay normally open contact connects the 5th resistance one end, the described 5th resistance other end connects the 6th resistance one end, the described 6th resistance other end connects the 7th resistance one end, the described 7th resistance other end connects the 8th resistance one end, the described 8th resistance other end connects the tenth resistance one end, the described tenth resistance other end connects the 8th diode cathode and the tenth diode cathode, described second relay normally closed contact connects the second diode cathode and second electric capacity one end, described second diode cathode connects the second electric capacity other end, described second electric capacity one end also connects the 7th diode cathode and the 8th diode cathode, described 7th diode cathode connects the tenth resistance one end and the 9th diode cathode respectively, described 9th diode cathode connects the tenth diode cathode, described 8th diode cathode connects the tenth diode cathode, described 8th diode cathode also connects the tenth resistance other end.
The beneficial effect of technique scheme is: above-mentioned anti-jump loop AC/DC universal; adapt to different running environment; adaptable; prevent the combined floodgate contact because of gauge tap from failing to return in time; and combined floodgate causes isolating switch to close continuously and cuts on faulty line; prevent the isolating switch auxiliary node because of trip(ping) circuit from adjusting improper or conjugating slow simultaneously, cause the first current interruption of protection contact and burn.
Carry out the part controlled above by central processing unit, be known to the skilled person technology.
First voltage stabilizer is preferably LM1117;
The preferred model of described amplifier is MCP6002T;
The preferred model of central processing unit is LPC1768.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (6)
1. with a power monitoring circuit sample reference frequency-conversion circuit for power circuit, it is characterized in that, comprising: circuit of sampling input, reference signal initialization circuit, frequency conversion process circuit, power circuit,
Circuit of sampling input signal frequency conversion signal output part rate of connections conversion process circuit signal input, described frequency conversion process circuit signal output terminal connects central processing unit analog to digital conversion signal input part, reference signal initialization circuit reference voltage output terminal connects circuit of sampling input reference voltage input terminal, described reference signal initialization circuit reference signal output terminal rate of connections conversion process circuit reference signal input part, described power circuit output end connects central processing unit energization input;
Described power circuit comprises: the first voltage stabilizer, the second inductance, the 20 resistance, the 19 electric capacity, the 9th electric capacity,
Power end connects the first voltage stabilizer input end, described first output end of voltage stabilizer connects second inductance one end, the described second inductance other end connects the 20 resistance one end, the described 20 resistance other end connects the 19 electric capacity one end and the 9th electric capacity one end, the described 20 resistance other end also connects central processing unit energization input, the described 19 electric capacity other end and the 9th electric capacity other end ground connection.
2. the power monitoring circuit sample reference frequency-conversion circuit with power circuit according to claim 1, it is characterized in that, described circuit of sampling input comprises: the 14 resistance, the 19 resistance, the 4th amplifier, the 6th high tension silicon rectifier,
Electric power signal analog quantity first input end connects the 14 resistance one end, the described 14 resistance other end connects the 6th high tension silicon rectifier first input end, electric power signal analog quantity second input end connects the 6th high tension silicon rectifier second input end, described 6th high tension silicon rectifier the 3rd output terminal connects the 19 resistance one end, the described 19 resistance other end connects the 6th high tension silicon rectifier the 4th output terminal, described 19 resistance one end also connects the 4th amplifier anode, described 4th amplifier minus earth;
Described circuit of sampling input also comprises: the 34 resistance, the 39 resistance, the 14 amplifier, the 7th high tension silicon rectifier,
Electric power signal analog quantity first input end connects the 34 resistance one end, the described 34 resistance other end connects the 7th high tension silicon rectifier first input end, electric power signal analog quantity second input end connects the 7th high tension silicon rectifier second input end, described 7th high tension silicon rectifier the 3rd output terminal connects the 39 resistance one end, the described 39 resistance other end connects the 7th high tension silicon rectifier the 4th output terminal, described 39 resistance one end also connects the 14 amplifier anode, described 14 amplifier minus earth.
3. the power monitoring circuit sample reference frequency-conversion circuit with power circuit according to claim 1, it is characterized in that, described reference signal initialization circuit comprises: the 23 resistance, the 24 resistance, the 25 resistance, the 26 resistance, the 15 diode, the 5th electric capacity, the 11 electric capacity, the 13 electric capacity, the 14 electric capacity, the 5th amplifier, the 6th amplifier
Power end connects the 23 resistance one end, the described 23 resistance other end connects the 15 diode cathode, described 15 diode cathode ground connection, the described 23 resistance other end also connects the 5th electric capacity one end, the described 5th electric capacity other end connects the 25 resistance one end and ground connection, the described 25 resistance other end connects the 24 resistance one end, the described 24 resistance other end connects the 5th electric capacity one end, described 24 resistance one end also connects the 11 electric capacity one end, described 11 electric capacity other end ground connection, described 11 electric capacity one end also connects the 13 electric capacity one end, described 13 electric capacity other end ground connection, described 24 resistance one end also connects the 26 resistance one end, the described 26 resistance other end connects the 14 electric capacity one end, described 14 electric capacity other end ground connection, described 13 electric capacity one end also connects the 5th amplifier anode and the 6th amplifier anode, described 5th amplifier negative pole connects the 5th amplifier out, described 6th amplifier negative pole connects the 6th amplifier out, described 5th amplifier out connects the 6th high tension silicon rectifier the 4th output terminal, described 6th amplifier out connects the 7th high tension silicon rectifier the 4th output terminal.
4. the power monitoring circuit sample reference frequency-conversion circuit with power circuit according to claim 1, it is characterized in that, described frequency conversion process circuit also comprises: the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, the 29 resistance, the 27 resistance, the 30 resistance, the 11 diode, the 12 diode, the 15 electric capacity, the first amplifier, the second amplifier, the 3rd amplifier
4th amplifier out connects the 15 resistance one end, the described 15 resistance other end connects the second amplifier anode and the 16 resistance one end respectively, described second amplifier negative pole connects the second amplifier out, described second amplifier out connects the 29 resistance one end, the described 29 resistance other end connects the 11 diode cathode respectively, 12 diode cathode and the 15 electric capacity one end, described 11 diode cathode, after 12 diode cathode is connected with the 15 electric capacity other end, connect the first amplifier negative pole again, described first amplifier anode connects the 15 electric capacity one end, described first amplifier out connects the 30 resistance one end, the described 30 resistance other end connects power supply, described first amplifier out also connects central processing unit, described 11 diode cathode, after 12 diode cathode is connected with the 15 electric capacity other end, also connect the 27 resistance one end, the described 27 resistance other end connects the 3rd amplifier out, described 3rd amplifier out also connects the 3rd amplifier negative pole, described 3rd amplifier anode connects one end after the 17 resistance and the 18 resistor coupled in parallel, described 17 resistance connects the 14 amplifier out.
5. the power monitoring circuit sample reference frequency-conversion circuit with power circuit according to claim 1, it is characterized in that, described frequency conversion process circuit also comprises: the 7th amplifier, the 8th amplifier, the 9th amplifier, the 21 resistance, the 22 resistance, the 28 resistance, the 13 diode, the 14 diode, the 8th electric capacity
14 amplifier out connects the 8th amplifier anode, described 8th amplifier negative pole connects the 8th amplifier out, described 8th amplifier out also connects the 22 resistance one end, the 22 resistance other end connects the 13 diode cathode, described 13 diode cathode connects the 21 resistance one end and the 14 diode cathode respectively, described 14 diode cathode connects the 13 diode cathode and the 8th electric capacity one end, the described 8th electric capacity other end connects the 14 diode cathode and the 7th amplifier negative pole, described 8th electric capacity one end also connects the 7th amplifier anode, described 7th amplifier out connects the 28 resistance one end, the described 28 resistance other end connects power supply, the 21 resistance other end connects the 9th amplifier out, described 9th amplifier out also connects the 9th amplifier negative pole.
6. the power monitoring circuit sample reference frequency-conversion circuit with power circuit according to claim 1, it is characterized in that, described first voltage stabilizer is LM1117.
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| CN201410747770.2A CN104460455B (en) | 2014-12-08 | 2014-12-08 | Electric power line monitoring sampling reference frequency conversion circuit with power circuit |
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