CN104393563A - Mains supply monitoring system - Google Patents
Mains supply monitoring system Download PDFInfo
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- CN104393563A CN104393563A CN201410660859.5A CN201410660859A CN104393563A CN 104393563 A CN104393563 A CN 104393563A CN 201410660859 A CN201410660859 A CN 201410660859A CN 104393563 A CN104393563 A CN 104393563A
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Abstract
The invention discloses a mains supply monitoring system. The system is characterized by being composed of a socket C, a front-end processing circuit, an overvoltage detection circuit connected with the front-end processing circuit, an undervoltage detection circuit connected with the overvoltage detection circuit, a comparison circuit connected with the overvoltage detection circuit and the undervoltage detection circuit, a protection circuit connected with the overvoltage detection circuit and the undervoltage detection circuit, a relay K arranged in the protection circuit, a trigger circuit connected with the protection circuit, and an oscillating circuit connected with the trigger circuit; one end of the socket C is connected with the front-end processing circuit after passing through the normally closed contact K1 of the relay K, while the other end of the socket C is connected with the oscillating circuit. The mains supply monitoring system is capable of monitoring the mains supply, and giving an alarm upon over-high or over-low mains supply voltage and automatically powering off an electric appliance power supply system to protect the electric appliance from being damaged.
Description
Technical field
The present invention relates to electronic applications, specifically refer to a kind of 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.
Summary of the invention
The object of the invention is to overcome the defect affecting household electrical appliance useful life because mains-supplied is unstable, a kind of civil power monitoring system can monitoring city's Electrical change is in advance provided.
Object of the present invention is achieved through the following technical solutions: a kind of civil power monitoring system, by socket C, front-end processing circuit, the over-voltage detection circuit be connected with front-end processing circuit, the undervoltage detection circuit be connected with over-voltage detection circuit, the Comparison Circuit be connected with undervoltage detection circuit with over-voltage detection circuit, the protective circuit be connected with undervoltage detection circuit with over-voltage detection circuit, be arranged on the relay K in protective circuit, the circuits for triggering be connected with protective circuit, and the oscillating circuit be connected with circuits for triggering forms; One end of described socket C is connected with front-end processing circuit after the normally-closed contact K1 of relay K, and the other end is then connected with oscillating circuit.
Further, described front-end processing circuit comprises electric capacity C1, electric capacity C2, resistance R1, diode D1, diode D2, voltage stabilizing didoe D3; Resistance R1 and electric capacity C1 is in parallel, the N pole of diode D1 is connected with the negative pole of electric capacity C1, its P pole ground connection, voltage stabilizing didoe D3 and electric capacity C2 is in parallel, one jointly hold be connected with the P pole of diode D1, another jointly holds and is then connected with the N pole of diode D2, the N pole of diode D2 is also connected with over-voltage detection circuit, its P pole is then connected with the N pole of diode D1, and the positive pole of electric capacity C1 is connected with one end of socket C after the normally-closed contact K1 of relay K.
Described over-voltage detection circuit is by resistance R8, and the first indicator light VL1, inverter P5, inverter P4, diode D6 form; One end of resistance R8 is connected with the N pole of diode D2, the other end is connected with the positive terminal of inverter P4 after the first indicator light VL1; the positive terminal of inverter P5 is connected with Comparison Circuit, its end of oppisite phase is connected with the positive terminal of inverter P4, and the N pole of diode D6 is connected with protective circuit with undervoltage detection circuit simultaneously, P pole is then connected with the end of oppisite phase of inverter P4.
Described undervoltage detection circuit comprises inverter P6, diode D7, the second indicator light VL2, resistance R7; The positive terminal of inverter P6 is connected with Comparison Circuit, its end of oppisite phase is then connected with protective circuit with Comparison Circuit after resistance R7 through the second indicator light VL2 simultaneously, and the P pole of diode D7 is connected with the end of oppisite phase of inverter P6, its N pole is then connected with the N pole of diode D6.
Described Comparison Circuit by electric capacity C5, diode D8, resistance R9, potentiometer R10, and potentiometer R11 forms; The P pole of diode D8 is then connected with resistance R7 after potentiometer R11 through resistance R9 as an input of circuit, its N pole, one end of potentiometer R10 is connected with the tie point of potentiometer R11 with resistance R9, the other end is then connected with the tie point of potentiometer R11 with resistance R7, the positive pole of electric capacity C5 is connected with the P pole of diode D8, minus earth, the sliding end of potentiometer R10 is connected with the positive terminal of inverter P5, and the sliding end of potentiometer R11 is then connected with the positive terminal of inverter P6.
Described protective circuit comprises triode VT2, relay K, diode D5, resistance R6; The N pole of diode D5 is connected with the positive pole of electric capacity C2, its P pole is then connected with the collector electrode of triode VT2, relay K and diode D5 are in parallel, one end of resistance R6 is connected with the base stage of triode VT2, the other end is connected with the N pole of diode D6, and the collector electrode of triode VT2 is connected with circuits for triggering, emitter is connected with the tie point of potentiometer R11 with resistance R7.
Described circuits for triggering are by triode VT1, the resistance R5 that one end is connected with the base stage of triode VT1, the other end is connected with the collector electrode of triode VT1 after potentiometer R4 through resistance R3, the electric capacity C4 that positive pole is connected with the tie point of resistance R3 with resistance R5, negative pole is connected with the collector electrode of triode VT1 forms; The base stage of described triode VT1 is connected with the P pole of diode D5, its emitter is then connected with oscillating circuit.
Described oscillating circuit is by inverter P3, and diode D4, inverter P2, inverter P1, resistance R2, electric capacity C3, oscillator YD form; The N pole of diode D4 is connected with the end of oppisite phase of inverter P3, its P pole is then connected with the positive terminal of inverter P2, one end of resistance R2 is connected with the end of oppisite phase of inverter P2, the other end is then connected with the forward end of inverter P2, and electric capacity C3 positive pole is connected with the end of oppisite phase of inverter P1, negative pole is connected with the positive terminal of inverter P2; The positive terminal of described inverter P3 is connected with the emitter of triode VT1, and the end of oppisite phase of inverter P2 is connected with the positive terminal of inverter P1, and the end of oppisite phase of inverter P1 is connected with the emitter of triode VT2 after oscillator YD; The other end of described socket C is connected with the emitter of triode VT1.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention 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) low cost of manufacture of the present invention, can be applied in life or industrial production.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram 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 to this.
Embodiment
As shown in Figure 1; civil power monitoring system of the present invention; by socket C; front-end processing circuit; the over-voltage detection circuit be connected with front-end processing circuit; the undervoltage detection circuit be connected with over-voltage detection circuit; the Comparison Circuit be connected with undervoltage detection circuit with over-voltage detection circuit; the protective circuit be connected with undervoltage detection circuit with over-voltage detection circuit; be arranged on the relay K in protective circuit; the circuits for triggering be connected with protective circuit, and the oscillating circuit be connected with circuits for triggering forms.One end of described socket C is connected with front-end processing circuit after the normally-closed contact K1 of relay K, and the other end is then connected with oscillating circuit.
Front-end processing circuit comprises electric capacity C1, electric capacity C2, resistance R1, diode D1, diode D2, voltage stabilizing didoe D3; Resistance R1 and electric capacity C1 is in parallel, the N pole of diode D1 is connected with the negative pole of electric capacity C1, its P pole ground connection, voltage stabilizing didoe D3 and electric capacity C2 is in parallel, one jointly hold be connected with the P pole of diode D1, another jointly holds and is then connected with the N pole of diode D2, the N pole of diode D2 is also connected with over-voltage detection circuit, its P pole is then connected with the N pole of diode D1, and the positive pole of electric capacity C1 is connected with one end of socket C after the normally-closed contact K1 of relay K.Civil power carries out sending over-voltage detection circuit to after rectifying and wave-filtering process through front-end processing circuit.
Whether over-voltage detection circuit is too high for detecting line voltage, and it is by resistance R8, and the first indicator light VL1, inverter P5, inverter P4, diode D6 form.One end of resistance R8 is connected with the N pole of diode D2, the other end is connected with the positive terminal of inverter P4 after the first indicator light VL1; the positive terminal of inverter P5 is connected with Comparison Circuit, its end of oppisite phase is connected with the positive terminal of inverter P4, and the N pole of diode D6 is connected with protective circuit with undervoltage detection circuit simultaneously, P pole is then connected with the end of oppisite phase of inverter P4.
Whether undervoltage detection circuit is too low for detecting line voltage, and it comprises inverter P6, diode D7, the second indicator light VL2, resistance R7.The positive terminal of inverter P6 is connected with Comparison Circuit, its end of oppisite phase is then connected with protective circuit with Comparison Circuit after resistance R7 through the second indicator light VL2 simultaneously, and the P pole of diode D7 is connected with the end of oppisite phase of inverter P6, its N pole is then connected with the N pole of diode D6.
Comparison Circuit is for detecting line voltage change input signal, and it is by electric capacity C5, diode D8, resistance R9, potentiometer R10, and potentiometer R11 forms.The P pole of diode D8 is then connected with resistance R7 after potentiometer R11 through resistance R9 as an input of circuit, its N pole, one end of potentiometer R10 is connected with the tie point of potentiometer R11 with resistance R9, the other end is then connected with the tie point of potentiometer R11 with resistance R7, the positive pole of electric capacity C5 is connected with the P pole of diode D8, minus earth, the sliding end of potentiometer R10 is connected with the positive terminal of inverter P5, and the sliding end of potentiometer R11 is then connected with the positive terminal of inverter P6.
When line voltage is too high or too low, all can trigger protection circuit.This protective circuit comprises triode VT2, relay K, diode D5, resistance R6; The N pole of diode D5 is connected with the positive pole of electric capacity C2, its P pole is then connected with the collector electrode of triode VT2, relay K and diode D5 are in parallel, one end of resistance R6 is connected with the base stage of triode VT2, the other end is connected with the N pole of diode D6, and the collector electrode of triode VT2 is connected with circuits for triggering, emitter is connected with the tie point of potentiometer R11 with resistance R7.
Described circuits for triggering are by triode VT1, the resistance R5 that one end is connected with the base stage of triode VT1, the other end is connected with the collector electrode of triode VT1 after potentiometer R4 through resistance R3, the electric capacity C4 that positive pole is connected with the tie point of resistance R3 with resistance R5, negative pole is connected with the collector electrode of triode VT1 forms; The base stage of described triode VT1 is connected with the P pole of diode D5, its emitter is then connected with oscillating circuit.
Described oscillating circuit is by inverter P3, and diode D4, inverter P2, inverter P1, resistance R2, electric capacity C3, oscillator YD form; The N pole of diode D4 is connected with the end of oppisite phase of inverter P3, its P pole is then connected with the positive terminal of inverter P2, one end of resistance R2 is connected with the end of oppisite phase of inverter P2, the other end is then connected with the forward end of inverter P2, and electric capacity C3 positive pole is connected with the end of oppisite phase of inverter P1, negative pole is connected with the positive terminal of inverter P2; The positive terminal of described inverter P3 is connected with the emitter of triode VT1, and the end of oppisite phase of inverter P2 is connected with the positive terminal of inverter P1, and the end of oppisite phase of inverter P1 is connected with the emitter of triode VT2 after oscillator YD; The other end of described socket C is connected with the emitter of triode VT1.
When civil power is normal, inverter P5 exports high level, inverter P4 and inverter P6 output low level, and at this moment the first indicator light VL1 and the second indicator light VL2 is not luminous, and triode VT2 ends, and relay K is failure to actuate, and electrical equipment normally works.
When mains supply over-voltage or under-voltage time, triode VT2 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 present invention can be implemented.
Claims (8)
1. a civil power monitoring system, it is characterized in that: by socket C, front-end processing circuit, the over-voltage detection circuit be connected with front-end processing circuit, the undervoltage detection circuit be connected with over-voltage detection circuit, the Comparison Circuit be connected with undervoltage detection circuit with over-voltage detection circuit, the protective circuit be connected with undervoltage detection circuit with over-voltage detection circuit, be arranged on the relay K in protective circuit, the circuits for triggering be connected with protective circuit, and the oscillating circuit be connected with circuits for triggering forms; One end of described socket C is connected with front-end processing circuit after the normally-closed contact K1 of relay K, and the other end is then connected with oscillating circuit.
2. a kind of civil power monitoring system according to claim 1, is characterized in that: described front-end processing circuit comprises electric capacity C1, electric capacity C2, resistance R1, diode D1, diode D2, voltage stabilizing didoe D3; Resistance R1 and electric capacity C1 is in parallel, the N pole of diode D1 is connected with the negative pole of electric capacity C1, its P pole ground connection, voltage stabilizing didoe D3 and electric capacity C2 is in parallel, one jointly hold be connected with the P pole of diode D1, another jointly holds and is then connected with the N pole of diode D2, the N pole of diode D2 is also connected with over-voltage detection circuit, its P pole is then connected with the N pole of diode D1, and the positive pole of electric capacity C1 is connected with one end of socket C after the normally-closed contact K1 of relay K.
3. a kind of civil power monitoring system according to claim 2, is characterized in that: described over-voltage detection circuit is by resistance R8, and the first indicator light VL1, inverter P5, inverter P4, diode D6 form; One end of resistance R8 is connected with the N pole of diode D2, the other end is connected with the positive terminal of inverter P4 after the first indicator light VL1; the positive terminal of inverter P5 is connected with Comparison Circuit, its end of oppisite phase is connected with the positive terminal of inverter P4, and the N pole of diode D6 is connected with protective circuit with undervoltage detection circuit simultaneously, P pole is then connected with the end of oppisite phase of inverter P4.
4. a kind of civil power monitoring system according to claim 3, is characterized in that: described undervoltage detection circuit comprises inverter P6, diode D7, the second indicator light VL2, resistance R7; The positive terminal of inverter P6 is connected with Comparison Circuit, its end of oppisite phase is then connected with protective circuit with Comparison Circuit after resistance R7 through the second indicator light VL2 simultaneously, and the P pole of diode D7 is connected with the end of oppisite phase of inverter P6, its N pole is then connected with the N pole of diode D6.
5. a kind of civil power monitoring system according to claim 4, is characterized in that: described Comparison Circuit by electric capacity C5, diode D8, resistance R9, potentiometer R10, and potentiometer R11 forms; The P pole of diode D8 is then connected with resistance R7 after potentiometer R11 through resistance R9 as an input of circuit, its N pole, one end of potentiometer R10 is connected with the tie point of potentiometer R11 with resistance R9, the other end is then connected with the tie point of potentiometer R11 with resistance R7, the positive pole of electric capacity C5 is connected with the P pole of diode D8, minus earth, the sliding end of potentiometer R10 is connected with the positive terminal of inverter P5, and the sliding end of potentiometer R11 is then connected with the positive terminal of inverter P6.
6. a kind of civil power monitoring system according to claim 5, is characterized in that: described protective circuit comprises triode VT2, relay K, diode D5, resistance R6; The N pole of diode D5 is connected with the positive pole of electric capacity C2, its P pole is then connected with the collector electrode of triode VT2, relay K and diode D5 are in parallel, one end of resistance R6 is connected with the base stage of triode VT2, the other end is connected with the N pole of diode D6, and the collector electrode of triode VT2 is connected with circuits for triggering, emitter is connected with the tie point of potentiometer R11 with resistance R7.
7. a kind of civil power monitoring system according to claim 6, it is characterized in that: described circuits for triggering are by triode VT1, the resistance R5 that one end is connected with the base stage of triode VT1, the other end is connected with the collector electrode of triode VT1 after potentiometer R4 through resistance R3, the electric capacity C4 that positive pole is connected with the tie point of resistance R3 with resistance R5, negative pole is connected with the collector electrode of triode VT1 forms; The base stage of described triode VT1 is connected with the P pole of diode D5, its emitter is then connected with oscillating circuit.
8. a kind of civil power monitoring system according to claim 7, is characterized in that: described oscillating circuit is by inverter P3, and diode D4, inverter P2, inverter P1, resistance R2, electric capacity C3, oscillator YD form; The N pole of diode D4 is connected with the end of oppisite phase of inverter P3, its P pole is then connected with the positive terminal of inverter P2, one end of resistance R2 is connected with the end of oppisite phase of inverter P2, the other end is then connected with the forward end of inverter P2, and electric capacity C3 positive pole is connected with the end of oppisite phase of inverter P1, negative pole is connected with the positive terminal of inverter P2; The positive terminal of described inverter P3 is connected with the emitter of triode VT1, and the end of oppisite phase of inverter P2 is connected with the positive terminal of inverter P1, and the end of oppisite phase of inverter P1 is connected with the emitter of triode VT2 after oscillator YD; The other end of described socket C is connected with the emitter of triode VT1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410660859.5A CN104393563A (en) | 2014-11-18 | 2014-11-18 | Mains supply monitoring system |
| CN201510309458.XA CN104868441A (en) | 2014-11-18 | 2015-06-08 | Symmetric voltage-stabilizing oscillation-type system for monitoring commercial power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410660859.5A CN104393563A (en) | 2014-11-18 | 2014-11-18 | Mains supply monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104393563A true CN104393563A (en) | 2015-03-04 |
Family
ID=52611418
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410660859.5A Pending CN104393563A (en) | 2014-11-18 | 2014-11-18 | Mains supply monitoring system |
| CN201510309458.XA Withdrawn CN104868441A (en) | 2014-11-18 | 2015-06-08 | Symmetric voltage-stabilizing oscillation-type system for monitoring commercial power |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510309458.XA Withdrawn CN104868441A (en) | 2014-11-18 | 2015-06-08 | Symmetric voltage-stabilizing oscillation-type system for monitoring commercial power |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104393563A (en) |
Cited By (2)
| 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 |
| CN108362068A (en) * | 2018-02-11 | 2018-08-03 | 四川虹美智能科技有限公司 | A kind of defrosting system of refrigerator and method |
-
2014
- 2014-11-18 CN CN201410660859.5A patent/CN104393563A/en active Pending
-
2015
- 2015-06-08 CN CN201510309458.XA patent/CN104868441A/en not_active Withdrawn
Cited By (2)
| 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 |
| CN108362068A (en) * | 2018-02-11 | 2018-08-03 | 四川虹美智能科技有限公司 | A kind of defrosting system of refrigerator and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104868441A (en) | 2015-08-26 |
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Application publication date: 20150304 |