CN105629110A - Electric performance recognition system for electric power system - Google Patents
Electric performance recognition system for electric power system Download PDFInfo
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- CN105629110A CN105629110A CN201511035399.8A CN201511035399A CN105629110A CN 105629110 A CN105629110 A CN 105629110A CN 201511035399 A CN201511035399 A CN 201511035399A CN 105629110 A CN105629110 A CN 105629110A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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Abstract
The invention discloses an electric performance recognition system for an electric power system, comprising a voltage sampling circuit, a voltage detection circuit, a frequency detection circuit, a USP power supply, a display screen, an LED indication lamp, a storage device, a button module and a single-chip microcomputer control system. The voltage sampling circuit inputs the voltage signals of the input voltage into a voltage detection circuit and a frequency detection circuit after collecting the voltage signal; the signal output terminals of the voltage detection circuit and a frequency detection circuit are connected to the micro-computer control system. The electric performance recognition system for the electric power system performs detection on the output voltage of the power supply through the voltage detection and frequency detection, performs signal processing through a PIC single-chip microcomputer, returns the feedback to the user through the display screen and the acousto-optic indication mode, and helps the user to promptly understand the power supply information in order to adopt the effective processing measurements. The circuit is simple in structure, accurate in test and practical in functions.
Description
Summary of the invention:
The other end of resistance R3 connects 1 pin of electric capacity C2 and chip IC 1, the other end of resistance R2 connects the other end of electric capacity C2,3 pins of chip IC 1 and Single-chip Controlling center, 2 pins of chip IC 1 connect the sliding end of potentiometer RP2, the fixing end of of potentiometer RP2 connects the negative electrode of resistance R4, electric capacity C3 and diode D1, another fixing end of potentiometer RP1 connects the other end of electric capacity C3 and the anode of diode D1, and the other end of resistance R4 connects power supply VCC;
Described frequency detection circuit includes rectifier bridge T, diode D2 crosses and audion VT1, 1 port of rectifier bridge T connects the output signal V-in of voltage sampling circuit, 2 ports of rectifier bridge T connect the anode of resistance R5 and diode D2, the 3 port ground connection of rectifier bridge T, 4 ports of rectifier bridge T connect resistance R6, electric capacity C4, the emitter stage of electric capacity C5 and audion VT1 ground connection, the negative electrode of diode D2 connects the other end of electric capacity C4, the other end of resistance R5 connects the other end of resistance R6, the other end of electric capacity C5 and the base stage of audion VT1, the colelctor electrode of audion VT1 connects resistance R7 and Single-chip Controlling center, the other end of resistance R7 connects power supply VCC.
Preferred version as the present invention: described Single-chip Controlling center is with the PIC18F458 control unit for main core component.
Preferred version as the present invention; Described display screen is LCD display.
Preferred version as the present invention: described LED light includes green light LED and red-light LED.
Preferred version as the present invention: described power supply VCC is 5V unidirectional current.
Compared with prior art, the invention has the beneficial effects as follows: the output voltage of power supply is detected by power system electrical property identification system of the present invention respectively through voltage detecting and frequency detecting two ways, and carry out signal processing by PIC single chip microcomputer, result is fed back to user intuitively by the mode of display screen and LED light, user is helped to understand for electrical information in time, to take effective treatment measures, the advantage that native system has simple in construction, accurate testing and practical function.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of power system electrical property identification system;
Fig. 2 is the circuit diagram of voltage detecting circuit;
Fig. 3 is the circuit diagram of frequency detection circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Referring to Fig. 1��3, a kind of power system electrical property identification system, including voltage sampling circuit, voltage detecting circuit, frequency detection circuit, ups power, display screen, LED light, memorizer, key-press module and single-chip computer control system; Described voltage sampling circuit will be respectively fed to voltage detecting circuit and frequency detection circuit after the voltage signal acquisition of input voltage, the signal output part of voltage detecting circuit and frequency detection circuit connects single-chip computer control system, and described single-chip computer control system is also respectively connected with ups power, display screen, LED light, memorizer and key-press module;
Described voltage detecting circuit includes transformator W, potentiometer RP1, electric capacity C1 and chip IC 1, the winding L1 of transformator W connects the output signal V-in of voltage sampling circuit, one end of the winding L2 of transformator W connects a fixing end of potentiometer RP1, the other end of the winding L2 of transformator W connects another fixing end and electric capacity C1 of potentiometer RP1, the other end of electric capacity C1 connects resistance R1, resistance R2 and resistance R3, the other end of resistance R1 connects the sliding end of potentiometer RP1, the other end of resistance R3 connects 1 pin of electric capacity C2 and chip IC 1, the other end of resistance R2 connects the other end of electric capacity C2, 3 pins of chip IC 1 and Single-chip Controlling center, 2 pins of chip IC 1 connect the sliding end of potentiometer RP2, one of potentiometer RP2 is fixing, and end connects resistance R4, the negative electrode of electric capacity C3 and diode D1, another fixing end of potentiometer RP1 connects the other end of electric capacity C3 and the anode of diode D1, the other end of resistance R4 connects power supply VCC,
Described frequency detection circuit includes rectifier bridge T, diode D2 crosses and audion VT1, 1 port of rectifier bridge T connects the output signal V-in of voltage sampling circuit, 2 ports of rectifier bridge T connect the anode of resistance R5 and diode D2, the 3 port ground connection of rectifier bridge T, 4 ports of rectifier bridge T connect resistance R6, electric capacity C4, the emitter stage of electric capacity C5 and audion VT1 ground connection, the negative electrode of diode D2 connects the other end of electric capacity C4, the other end of resistance R5 connects the other end of resistance R6, the other end of electric capacity C5 and the base stage of audion VT1, the colelctor electrode of audion VT1 connects resistance R7 and Single-chip Controlling center, the other end of resistance R7 connects power supply VCC.
Single-chip Controlling center is with the PIC18F458 control unit for main core component. Display screen is LCD display. LED light includes green light LED and red-light LED. Power supply VCC is 5V unidirectional current.
The operation principle of the present invention is: input voltage includes internal combustion engine generator and line voltage, the voltage signal collected is respectively fed to voltage detecting circuit and frequency detection circuit by voltage sampling circuit, the alternating voltage of input voltage input is mainly detected by voltage detecting circuit in real time, input voltage voltage signal V-in is after transformator W pick-up, then through by potentiometer RP1, resistance R2, electric capacity C1, single-chip computer control system is sent into after the voltage lifting circuit of resistance R3 and chip IC 1 composition, voltage lifting circuit adopts unlimited gain second-order low-pass filter, ac voltage signal can be translated up, also can filter high-frequency interferencing signal, aliasing effect when preventing AC signal from sampling. add the stability of circuit, the electric voltage frequency that line voltage and internal combustion engine generator are mainly exported by frequency detection circuit detects, dual power supply equipment output voltage signal V-in rectified after, a place in figure 3 produces fixed frequency, and (wherein line voltage is about 100HZ, internal combustion engine generator is different according to model difference output frequency) half-wave voltage signal, after resistance R5 and resistance R6 dividing potential drop, access audion VT1 be amplified, produce zero-crossing pulse at b place. by changing the ratio of resistance R1 and resistance R2, the width of adjustable b place zero-crossing pulse. therefore namely the midpoint of the zero-crossing pulse obtained is the zero crossing that alternating current is real. the time corresponding for obtaining pulse center point, utilizing the seizure rising edge of PIC, write down its time of origin, and then catch pulse falling edge subsequently, both time differences are pulse width, and the 1/2 of its value is pulse center point. adopt such catching mode can be accurately obtained the actual zero crossing of alternating voltage, single-chip computer control system judges it is that power supply is in work according to the frequency values detected, then the result processed is exported by LCD display and indicating circuit, the output voltage of power supply is detected by circuit respectively through voltage detecting and frequency detecting two ways, and carry out signal processing by PIC single chip microcomputer, result is fed back to user intuitively by the mode of display screen and acousto-optic instruction, user is helped to understand for electrical information in time, to take effective treatment measures, this circuit has simple in construction, the advantage of accurate testing and practical function.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when without departing substantially from the spirit of the present invention or basic feature, it is possible to realize the present invention in other specific forms. Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the invention rather than described above limits, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in the present invention. Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
Claims (5)
1. a power system electrical property identification system, including voltage sampling circuit, voltage detecting circuit, frequency detection circuit, ups power, display screen, LED light, memorizer, key-press module and single-chip computer control system; It is characterized in that, described voltage sampling circuit will be respectively fed to voltage detecting circuit and frequency detection circuit after the voltage signal acquisition of input voltage, the signal output part of voltage detecting circuit and frequency detection circuit connects single-chip computer control system, and described single-chip computer control system is also respectively connected with ups power, display screen, LED light, memorizer and key-press module.
Described voltage detecting circuit includes transformator W, potentiometer RP1, electric capacity C1 and chip IC 1, the winding L1 of transformator W connects the output signal V-in of voltage sampling circuit, one end of the winding L2 of transformator W connects a fixing end of potentiometer RP1, the other end of the winding L2 of transformator W connects another fixing end and electric capacity C1 of potentiometer RP1, the other end of electric capacity C1 connects resistance R1, resistance R2 and resistance R3, the other end of resistance R1 connects the sliding end of potentiometer RP1, the other end of resistance R3 connects 1 pin of electric capacity C2 and chip IC 1, the other end of resistance R2 connects the other end of electric capacity C2, 3 pins of chip IC 1 and Single-chip Controlling center, 2 pins of chip IC 1 connect the sliding end of potentiometer RP2, one of potentiometer RP2 is fixing, and end connects resistance R4, the negative electrode of electric capacity C3 and diode D1, another fixing end of potentiometer RP1 connects the other end of electric capacity C3 and the anode of diode D1, the other end of resistance R4 connects power supply VCC, described chip IC 1 is LM358 type operational amplifier,
Described frequency detection circuit includes rectifier bridge T, diode D2 crosses and audion VT1, 1 port of rectifier bridge T connects the output signal V-in of voltage sampling circuit, 2 ports of rectifier bridge T connect the anode of resistance R5 and diode D2, the 3 port ground connection of rectifier bridge T, 4 ports of rectifier bridge T connect resistance R6, electric capacity C4, the emitter stage of electric capacity C5 and audion VT1 ground connection, the negative electrode of diode D2 connects the other end of electric capacity C4, the other end of resistance R5 connects the other end of resistance R6, the other end of electric capacity C5 and the base stage of audion VT1, the colelctor electrode of audion VT1 connects resistance R7 and Single-chip Controlling center, the other end of resistance R7 connects power supply VCC.
2. a kind of power system electrical property identification system according to claim 1, it is characterised in that described Single-chip Controlling center is with the PIC18F458 control unit for main core component.
3. a kind of power system electrical property identification system according to claim 1, it is characterised in that described display screen is LCD display.
4. a kind of power system electrical property identification system according to claim 1, it is characterised in that described LED light includes green light LED and red-light LED.
5. a kind of power system electrical property identification system according to claim 1, it is characterised in that described power supply VCC is 5V unidirectional current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511035399.8A CN105629110A (en) | 2015-12-30 | 2015-12-30 | Electric performance recognition system for electric power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511035399.8A CN105629110A (en) | 2015-12-30 | 2015-12-30 | Electric performance recognition system for electric power system |
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| CN105629110A true CN105629110A (en) | 2016-06-01 |
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| CN201511035399.8A Pending CN105629110A (en) | 2015-12-30 | 2015-12-30 | Electric performance recognition system for electric power system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684832A (en) * | 2017-01-20 | 2017-05-17 | 河南许继智能科技股份有限公司 | System for integrating protective current sampling and power supply |
| CN110275453A (en) * | 2018-01-30 | 2019-09-24 | 国网山东省电力公司日照供电公司 | A kind of low-voltage network power quality controlling device general purpose controller |
| CN113295908A (en) * | 2021-04-29 | 2021-08-24 | 安徽凯承源电子科技有限公司 | Distribution transformer voltage detection device |
| CN117478140A (en) * | 2023-12-26 | 2024-01-30 | 四川莱福德科技有限公司 | High-precision full-voltage alternating current-direct current sampling circuit and method for LED power supply |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204349567U (en) * | 2015-01-13 | 2015-05-20 | 温州市兴海市政建设有限公司 | The identification circuit of a kind of internal combustion engine generator and civil power |
| CN105790670A (en) * | 2016-04-06 | 2016-07-20 | 成都卡诺源科技有限公司 | Motor automatic control system based on current sampling circuit |
| CN106383262A (en) * | 2016-08-29 | 2017-02-08 | 中车大连机车车辆有限公司 | Locomotive control circuit grounding detection and display device |
-
2015
- 2015-12-30 CN CN201511035399.8A patent/CN105629110A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204349567U (en) * | 2015-01-13 | 2015-05-20 | 温州市兴海市政建设有限公司 | The identification circuit of a kind of internal combustion engine generator and civil power |
| CN105790670A (en) * | 2016-04-06 | 2016-07-20 | 成都卡诺源科技有限公司 | Motor automatic control system based on current sampling circuit |
| CN106383262A (en) * | 2016-08-29 | 2017-02-08 | 中车大连机车车辆有限公司 | Locomotive control circuit grounding detection and display device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684832A (en) * | 2017-01-20 | 2017-05-17 | 河南许继智能科技股份有限公司 | System for integrating protective current sampling and power supply |
| CN110275453A (en) * | 2018-01-30 | 2019-09-24 | 国网山东省电力公司日照供电公司 | A kind of low-voltage network power quality controlling device general purpose controller |
| CN113295908A (en) * | 2021-04-29 | 2021-08-24 | 安徽凯承源电子科技有限公司 | Distribution transformer voltage detection device |
| CN117478140A (en) * | 2023-12-26 | 2024-01-30 | 四川莱福德科技有限公司 | High-precision full-voltage alternating current-direct current sampling circuit and method for LED power supply |
| CN117478140B (en) * | 2023-12-26 | 2024-03-15 | 四川莱福德科技有限公司 | High-precision full-voltage alternating current-direct current sampling circuit and method for LED power supply |
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Application publication date: 20160601 |