CN204304398U - A kind of high accuracy civil power monitoring system - Google Patents
A kind of high accuracy civil power monitoring system Download PDFInfo
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- CN204304398U CN204304398U CN201420694820.0U CN201420694820U CN204304398U CN 204304398 U CN204304398 U CN 204304398U CN 201420694820 U CN201420694820 U CN 201420694820U CN 204304398 U CN204304398 U CN 204304398U
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Abstract
The utility model discloses a kind of high accuracy civil power monitoring system, comprise Comparison Circuit, the over-voltage detection circuit be all connected with Comparison Circuit and undervoltage detection circuit, the protective circuit be simultaneously connected with undervoltage detection circuit with over-voltage detection circuit, and the oscillating circuit to be connected with protective circuit, it is characterized in that: also comprise filter circuit; The compositions such as described filter circuit is by operational amplifier T1, and operational amplifier T2, the electric capacity C3 that positive pole is connected with over-voltage detection circuit with protective circuit simultaneously, negative pole is connected with the output of operational amplifier T1 after potentiometer R9 through resistance R8.The utility model can to row monitoring during civil power; when line voltage is too high or too low, it can give the alarm and automatically disconnect the power supply of electrical appliance electric power system; thus protection electrical appliance is not damaged; simultaneously; Operation system setting has filter circuit; can filter the frequency of not demand, make the monitoring result of system more accurate.
Description
Technical field
The utility model relates to electronic applications, specifically refers to a kind of high accuracy civil power monitoring system.
Background technology
Electric energy is the one energy easily, and its extensive use defines the second technical revolution in mankind's modern history.Effectively promote the development of human society, created great riches to the mankind, improve the life of the mankind.Along with popularizing of electrical network, present every household has all used household electrical appliance, brings very large change to the life of the mankind.
But along with the continuous increase of power consumption, civil power there will be unavoidably because load is excessive or supply line is aging etc. that reason causes power supply instability, thus affects the normal use of household electrical appliance, even has influence on useful life.
Utility model content
The purpose of this utility model is to overcome the defect affecting household electrical appliance useful life because mains-supplied is unstable, provides a kind of high accuracy civil power monitoring system can monitoring city's Electrical change in advance.
The purpose of this utility model is achieved through the following technical solutions: a kind of high accuracy civil power monitoring system, comprise Comparison Circuit, the over-voltage detection circuit be all connected with Comparison Circuit and undervoltage detection circuit, the protective circuit be simultaneously connected with undervoltage detection circuit with over-voltage detection circuit, and the oscillating circuit to be connected with protective circuit, also comprise filter circuit, described filter circuit is by operational amplifier T1, with operational amplifier T2, positive pole is connected with over-voltage detection circuit with protective circuit simultaneously, the electric capacity C3 that negative pole is connected with the output of operational amplifier T1 after potentiometer R9 through resistance R8, positive pole is connected with the negative pole of electric capacity C3, the electric capacity C5 that negative pole is connected with the inverting input of operational amplifier T2, one end is connected with the positive pole of electric capacity C3, the resistance R7 that the other end is connected with the inverting input of operational amplifier T2 after potentiometer R11 through resistance R10, positive pole is connected with the tie point of resistance R10 with resistance R7, the electric capacity C4 that negative pole is connected with the output of operational amplifier T1, and one end is connected with the normal phase input end of operational amplifier T2, the resistance R12 of other end ground connection forms, the output of described operational amplifier T1 is connected with the sliding end of potentiometer R9, inverting input is then connected with the sliding end of resistance R12, normal phase input end is connected with its output.
Further, described Comparison Circuit by electric capacity C1, diode D1, resistance R3, potentiometer R1, and potentiometer R2 forms; P pole ground connection, its N pole after electric capacity C1 of diode D1 are then connected with undervoltage detection circuit after potentiometer R2 through resistance R3, one end of potentiometer R1 is connected with the tie point of potentiometer R2 with resistance R3, the other end is then connected with the tie point of undervoltage detection circuit with potentiometer R2, the sliding end of potentiometer R1 is connected with over-voltage detection circuit, and the sliding end of potentiometer R2 is then connected with undervoltage detection circuit.
Described over-voltage detection circuit is by resistance R4, and the first indicator light VL1, inverter P1, inverter P3, diode D3 form; One end of resistance R4 is simultaneously with the positive pole of electric capacity C3 and protective circuit is connected, the other end is connected with the positive terminal of inverter P3 after the first indicator light VL1; the positive terminal of inverter P1 is connected with the sliding end of potentiometer R1, its end of oppisite phase is connected with the positive terminal of inverter P3, and the N pole of diode D3 is connected with protective circuit with undervoltage detection circuit simultaneously, P pole is then connected with the end of oppisite phase of inverter P3.
Described undervoltage detection circuit comprises inverter P2, diode D2, the second indicator light VL2, resistance R5; The positive terminal of inverter P2 is connected with the sliding end of potentiometer R2, its end of oppisite phase is then connected with protective circuit with potentiometer R2 after resistance R5 through the second indicator light VL2 simultaneously, and the P pole of diode D2 is connected with the end of oppisite phase of inverter P2, its N pole is then connected with the N pole of diode D3.
Described protective circuit comprises triode VT1, relay K, diode D4, resistance R6; The N pole of diode D4 is connected with the positive pole of electric capacity C3, its P pole is then connected with the collector electrode of triode VT1, relay K and diode D4 are in parallel, one end of resistance R6 is connected with the base stage of triode VT1, the other end is connected with the N pole of diode D3, and the collector electrode of triode VT1 is connected with oscillating circuit, emitter is connected with the tie point of potentiometer R2 with resistance R5.
Described oscillating circuit is by inverter P4, and diode D5, inverter P5, inverter P6, resistance R13, electric capacity C2, oscillator YD form; The N pole of diode D5 is connected with the end of oppisite phase of inverter P4, its P pole is then connected with the positive terminal of inverter P5, one end of resistance R13 is connected with the end of oppisite phase of inverter P5, the other end is then connected with the forward end of inverter P5, and electric capacity C2 positive pole is connected with the end of oppisite phase of inverter P6, negative pole is connected with the positive terminal of inverter P5; The positive terminal of described inverter P4 is connected with the collector electrode of triode VT1, the end of oppisite phase of inverter P5 is connected with the positive terminal of inverter P6, while the end of oppisite phase of inverter P6 is connected with the emitter of triode VT1 after oscillator YD after the normally-closed contact K1 of relay K as circuit one output.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) the utility model can to row monitoring during civil power, and when line voltage is too high or too low, it can give the alarm and automatically disconnect the power supply of electrical appliance electric power system, thus protection electrical appliance is not damaged.
(2) the utility model is provided with filter circuit, can filter, make the monitoring result of system more accurate to the frequency of not demand.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1; high accuracy civil power monitoring system of the present utility model; comprise Comparison Circuit; the over-voltage detection circuit be all connected with Comparison Circuit and undervoltage detection circuit; the protective circuit be simultaneously connected with undervoltage detection circuit with over-voltage detection circuit, and the oscillating circuit be connected with protective circuit.In order to make system monitoring result more accurate, in system, be also provided with filter circuit.
Filter circuit can filter unwanted frequency, it is by operational amplifier T1, with operational amplifier T2, positive pole is connected with over-voltage detection circuit with protective circuit simultaneously, the electric capacity C3 that negative pole is connected with the output of operational amplifier T1 after potentiometer R9 through resistance R8, positive pole is connected with the negative pole of electric capacity C3, the electric capacity C5 that negative pole is connected with the inverting input of operational amplifier T2, one end is connected with the positive pole of electric capacity C3, the resistance R7 that the other end is connected with the inverting input of operational amplifier T2 after potentiometer R11 through resistance R10, positive pole is connected with the tie point of resistance R10 with resistance R7, the electric capacity C4 that negative pole is connected with the output of operational amplifier T1, and one end is connected with the normal phase input end of operational amplifier T2, the resistance R12 of other end ground connection forms, the output of described operational amplifier T1 is connected with the sliding end of potentiometer R9, inverting input is then connected with the sliding end of resistance R12, normal phase input end is connected with its output.As long as adjustment potentiometer R9 and potentiometer R11 then can adjust the scope of filtering.
Comparison Circuit is for detecting line voltage change input signal, and it is by electric capacity C1, diode D1, resistance R3, potentiometer R1, and potentiometer R2 forms; P pole ground connection, its N pole after electric capacity C1 of diode D1 are then connected with undervoltage detection circuit after potentiometer R2 through resistance R3, one end of potentiometer R1 is connected with the tie point of potentiometer R2 with resistance R3, the other end is then connected with the tie point of undervoltage detection circuit with potentiometer R2, the sliding end of potentiometer R1 is connected with over-voltage detection circuit, and the sliding end of potentiometer R2 is then connected with undervoltage detection circuit.
Whether over-voltage detection circuit is too high for detecting line voltage, and it is by resistance R4, and the first indicator light VL1, inverter P1, inverter P3, diode D3 form; One end of resistance R4 is simultaneously with the positive pole of electric capacity C3 and protective circuit is connected, the other end is connected with the positive terminal of inverter P3 after the first indicator light VL1; the positive terminal of inverter P1 is connected with the sliding end of potentiometer R1, its end of oppisite phase is connected with the positive terminal of inverter P3, and the N pole of diode D3 is connected with protective circuit with undervoltage detection circuit simultaneously, P pole is then connected with the end of oppisite phase of inverter P3.
Undervoltage detection circuit comprises inverter P2, diode D2, the second indicator light VL2, resistance R5 for detecting whether too low it of line voltage.During connection; the positive terminal of inverter P2 is connected with the sliding end of potentiometer R2, its end of oppisite phase is then connected with protective circuit with potentiometer R2 after resistance R5 through the second indicator light VL2 simultaneously, and the P pole of diode D2 is connected with the end of oppisite phase of inverter P2, its N pole is then connected with the N pole of diode D3.
When line voltage is too high or too low, all can trigger protection circuit.This protective circuit comprises triode VT1, relay K, diode D4, resistance R6; The N pole of diode D4 is connected with the positive pole of electric capacity C3, its P pole is then connected with the collector electrode of triode VT1, relay K and diode D4 are in parallel, one end of resistance R6 is connected with the base stage of triode VT1, the other end is connected with the N pole of diode D3, and the collector electrode of triode VT1 is connected with oscillating circuit, emitter is connected with the tie point of potentiometer R2 with resistance R5.
Described oscillating circuit is by inverter P4, and diode D5, inverter P5, inverter P6, resistance R13, electric capacity C2, oscillator YD form; The N pole of diode D5 is connected with the end of oppisite phase of inverter P4, its P pole is then connected with the positive terminal of inverter P5, one end of resistance R13 is connected with the end of oppisite phase of inverter P5, the other end is then connected with the forward end of inverter P5, and electric capacity C2 positive pole is connected with the end of oppisite phase of inverter P6, negative pole is connected with the positive terminal of inverter P5; The positive terminal of described inverter P4 is connected with the collector electrode of triode VT1, the end of oppisite phase of inverter P5 is connected with the positive terminal of inverter P6, while the end of oppisite phase of inverter P6 is connected with the emitter of triode VT1 after oscillator YD after the normally-closed contact K1 of relay K as circuit one output.
When civil power is normal, inverter P1 exports high level, inverter P3 and inverter P2 output low level, and at this moment the first indicator light VL1 and the second indicator light VL2 is not luminous, and triode VT1 ends, and relay K is failure to actuate, and electrical equipment normally works.
When mains supply over-voltage or under-voltage time, triode VT1 conducting, its normally-closed contact of relay K work disconnects, thus cuts off appliances power source, and simultaneously corresponding indicator light is luminous.
As mentioned above, just well the utility model can be implemented.
Claims (6)
1. a high accuracy civil power monitoring system, comprise Comparison Circuit, the over-voltage detection circuit be all connected with Comparison Circuit and undervoltage detection circuit, the protective circuit be simultaneously connected with undervoltage detection circuit with over-voltage detection circuit, and the oscillating circuit to be connected with protective circuit, it is characterized in that: also comprise filter circuit, described filter circuit is by operational amplifier T1, with operational amplifier T2, positive pole is connected with over-voltage detection circuit with protective circuit simultaneously, the electric capacity C3 that negative pole is connected with the output of operational amplifier T1 after potentiometer R9 through resistance R8, positive pole is connected with the negative pole of electric capacity C3, the electric capacity C5 that negative pole is connected with the inverting input of operational amplifier T2, one end is connected with the positive pole of electric capacity C3, the resistance R7 that the other end is connected with the inverting input of operational amplifier T2 after potentiometer R11 through resistance R10, positive pole is connected with the tie point of resistance R10 with resistance R7, the electric capacity C4 that negative pole is connected with the output of operational amplifier T1, and one end is connected with the normal phase input end of operational amplifier T2, the resistance R12 of other end ground connection forms, the output of described operational amplifier T1 is connected with the sliding end of potentiometer R9, inverting input is then connected with the sliding end of resistance R12, normal phase input end is connected with its output.
2. a kind of high accuracy civil power monitoring system according to claim 1, is characterized in that: described Comparison Circuit by electric capacity C1, diode D1, resistance R3, potentiometer R1, and potentiometer R2 forms; P pole ground connection, its N pole after electric capacity C1 of diode D1 are then connected with undervoltage detection circuit after potentiometer R2 through resistance R3, one end of potentiometer R1 is connected with the tie point of potentiometer R2 with resistance R3, the other end is then connected with the tie point of undervoltage detection circuit with potentiometer R2, the sliding end of potentiometer R1 is connected with over-voltage detection circuit, and the sliding end of potentiometer R2 is then connected with undervoltage detection circuit.
3. a kind of high accuracy civil power monitoring system according to claim 2, is characterized in that: described over-voltage detection circuit is by resistance R4, and the first indicator light VL1, inverter P1, inverter P3, diode D3 form; One end of resistance R4 is simultaneously with the positive pole of electric capacity C3 and protective circuit is connected, the other end is connected with the positive terminal of inverter P3 after the first indicator light VL1; the positive terminal of inverter P1 is connected with the sliding end of potentiometer R1, its end of oppisite phase is connected with the positive terminal of inverter P3, and the N pole of diode D3 is connected with protective circuit with undervoltage detection circuit simultaneously, P pole is then connected with the end of oppisite phase of inverter P3.
4. a kind of high accuracy civil power monitoring system according to claim 3, is characterized in that: described undervoltage detection circuit comprises inverter P2, diode D2, the second indicator light VL2, resistance R5; The positive terminal of inverter P2 is connected with the sliding end of potentiometer R2, its end of oppisite phase is then connected with protective circuit with potentiometer R2 after resistance R5 through the second indicator light VL2 simultaneously, and the P pole of diode D2 is connected with the end of oppisite phase of inverter P2, its N pole is then connected with the N pole of diode D3.
5. a kind of high accuracy civil power monitoring system according to claim 4, is characterized in that: described protective circuit comprises triode VT1, relay K, diode D4, resistance R6; The N pole of diode D4 is connected with the positive pole of electric capacity C3, its P pole is then connected with the collector electrode of triode VT1, relay K and diode D4 are in parallel, one end of resistance R6 is connected with the base stage of triode VT1, the other end is connected with the N pole of diode D3, and the collector electrode of triode VT1 is connected with oscillating circuit, emitter is connected with the tie point of potentiometer R2 with resistance R5.
6. a kind of high accuracy civil power monitoring system according to claim 5, is characterized in that: described oscillating circuit is by inverter P4, and diode D5, inverter P5, inverter P6, resistance R13, electric capacity C2, oscillator YD form; The N pole of diode D5 is connected with the end of oppisite phase of inverter P4, its P pole is then connected with the positive terminal of inverter P5, one end of resistance R13 is connected with the end of oppisite phase of inverter P5, the other end is then connected with the forward end of inverter P5, and electric capacity C2 positive pole is connected with the end of oppisite phase of inverter P6, negative pole is connected with the positive terminal of inverter P5; The positive terminal of described inverter P4 is connected with the collector electrode of triode VT1, the end of oppisite phase of inverter P5 is connected with the positive terminal of inverter P6, while the end of oppisite phase of inverter P6 is connected with the emitter of triode VT1 after oscillator YD after the normally-closed contact K1 of relay K as circuit one output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694820.0U CN204304398U (en) | 2014-11-18 | 2014-11-18 | A kind of high accuracy civil power monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694820.0U CN204304398U (en) | 2014-11-18 | 2014-11-18 | A kind of high accuracy civil power monitoring system |
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| Publication Number | Publication Date |
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| CN204304398U true CN204304398U (en) | 2015-04-29 |
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| CN201420694820.0U Expired - Fee Related CN204304398U (en) | 2014-11-18 | 2014-11-18 | A kind of high accuracy civil power monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868470A (en) * | 2014-11-18 | 2015-08-26 | 成都雷克尔科技有限公司 | High-precision symmetric voltage stabilizing oscillation type commercial power monitoring system |
-
2014
- 2014-11-18 CN CN201420694820.0U patent/CN204304398U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868470A (en) * | 2014-11-18 | 2015-08-26 | 成都雷克尔科技有限公司 | High-precision symmetric voltage stabilizing oscillation type commercial power monitoring system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151118 |
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| EXPY | Termination of patent right or utility model |