CN201159761Y - Commercial power, generator electric power judgment device - Google Patents
Commercial power, generator electric power judgment device Download PDFInfo
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- CN201159761Y CN201159761Y CN 200820076205 CN200820076205U CN201159761Y CN 201159761 Y CN201159761 Y CN 201159761Y CN 200820076205 CN200820076205 CN 200820076205 CN 200820076205 U CN200820076205 U CN 200820076205U CN 201159761 Y CN201159761 Y CN 201159761Y
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Abstract
The utility model relates to an electric device, in particular to a city power and generator power judging device which can judge that the power supply type is the city power or the generator power in the power supply line and solve the problem that the power supply judging condition is not realized in the current city power and the generator operation sites due to the limitation of the objective conditions; the city power and generator power judging device includes a two-way voltage division acquisition circuit whose input end is connected with a single-phase power supply line, a voltage comparing circuit respectively connected with the output ends of the two-way voltage division acquisition circuit, a power supply judging circuit connected with the output end of the voltage comparing circuit, a delay circuit which controls the efficient operation time of the power supply judging circuit and a logic signal generating circuit controlled by the power supply judging circuit and the delay circuit simultaneously; the output end of the logical signal generating circuit is connected with the input end of a remote signal acquisition device; the city power and generator power judging device has the advantages of reasonable structure, simple principle, accurate judgment and being unable to be limited by objective conditions.
Description
Technical field
The utility model relates to a kind of electric device, specifically is a kind ofly can judge mains-supplied or the civil power of generator powered, generator power supply judgment means on the power supply line.
Background technology
At present, known judgement to civil power, generator powered power supply is to gather power supply signal in civil power, generator working site to deliver to data acquisition unit, and after signal Processing, process transmission equipment and transmission line are realized on background computer again; But work as civil power, generator working site because of being subjected to the restriction of objective condition, when not possessing data acquisition, transmission conditions, just can't on background computer, realize the function that power supply is judged.
Summary of the invention
The utility model does not possess the problem that realize power supply Rule of judgment in civil power, generator working site because of being subjected to the objective condition restriction in order to solve at present, and providing a kind of can judge that through the power supply line mains-supplied still is civil power, the generator power supply judgment means of generator powered at the machine room away from civil power, generator working site.
The utility model is to adopt following technical scheme to realize: civil power, generator power supply judgment means, comprise the continuous two-way dividing potential drop Acquisition Circuit of input end and single phase power supply power lead, be connected and the voltage comparator circuit of two-way dividing potential drop Acquisition Circuit output terminal, the power supply decision circuitry that is connected in the voltage comparator circuit output terminal and the delay circuit of control power supply decision circuitry operational use time respectively, and be subjected to power supply decision circuitry and delay circuit logical signal control, that output terminal links to each other with remote signaling harvester input end to produce circuit simultaneously.Wherein, the setting of delay circuit is for fear of civil power, when generator power supply switches, and supply variation causes that the erroneous judgement of this device is disconnected.
This device in use, as with mains-supplied, one tunnel dividing potential drop Acquisition Circuit with exchange phase line and link to each other, can collect ac voltage signal, another road dividing potential drop Acquisition Circuit with exchange zero line and link to each other, voltage between the protection ground wire of zero line and pressure Acquisition Circuit is very little, therefore, this dividing potential drop Acquisition Circuit is added on thereafter, and the voltage signal of voltage comparator circuit is about 0V, admittedly be lower than the reference voltage of voltage comparator circuit, this road voltage comparator circuit output low level collects the reference voltage that ac voltage signal that another road dividing potential drop Acquisition Circuit of alternating voltage sampled signal is added on voltage comparator circuit is higher than voltage comparator circuit, this road voltage comparator circuit output high level signal; After mains supply and generator power supply switching, when powering with generator power supply, two-way dividing potential drop Acquisition Circuit all can collect the ac voltage signal of about 110V, through behind the rectifying and wave-filtering, two-way dividing potential drop Acquisition Circuit is added on the reference voltage that the d. c. voltage signal of voltage comparator circuit thereafter all is higher than voltage comparator circuit, the two-way voltage comparator circuit is all exported high level signal, then, the power supply decision circuitry is under the control of delay circuit, can be according to the output (it is mains-supplied or generator powered that the output of two-way voltage comparator circuit has characterized) of two-way voltage comparator circuit, the steering logic signal generating circuit produces corresponding logical signal; And this signal delivered to away from the signal pickup assembly in the machine room of civil power, generator working site, via line transfers on the background computer then, by the logical signal that receives, the staff can realize the judgement to mains-supplied, generator power supply power supply and power down mode.
Compared with prior art, the utility model has utilized the suspension characteristic of generator, and the suspension characteristic of so-called generator is meant: the single-phase generator power supply is not before inserting load, and the power lead of generator does not have earth terminal, so electric potential floating.Therefore when generator powered, at first the power supply with electric loading is delayed time, promptly keep power supply line electric potential floating state, at this moment, two-way dividing potential drop Acquisition Circuit of the present utility model all can collect ac voltage signal, produce corresponding logical signal different during with mains-supplied through voltage comparator circuit, power supply decision circuitry steering logic signal generating circuit then, carry out the judgement of civil power, generator power supply with this.
The utility model is rational in infrastructure, and principle is simple, and accuracy of judgement is not subject to the objective condition restriction.
Description of drawings
Fig. 1 is a functional-block diagram of the present utility model;
Fig. 2 is use principle figure of the present utility model;
Fig. 3 is the utility model one physical circuit schematic diagram;
Embodiment
Shown in Fig. 1,3, civil power, generator power supply judgment means, comprise the continuous two-way dividing potential drop Acquisition Circuit of input end and single phase power supply power lead, be connected and the voltage comparator circuit of two-way dividing potential drop Acquisition Circuit output terminal, the power supply decision circuitry that is connected in the voltage comparator circuit output terminal and the delay circuit of control power supply decision circuitry operational use time respectively, and be subjected to power supply decision circuitry and delay circuit logical signal control, that output terminal links to each other with remote signaling harvester input end to produce circuit simultaneously:
Described two-way dividing potential drop Acquisition Circuit comprises the two-way resistor voltage divider circuit, is connected to diode D1, D2 and filter capacitor C1, the C2 of two-way resistor voltage divider circuit output terminal; Wherein the common node of two-way resistor voltage divider circuit links to each other with the protection ground wire.
Described voltage comparator circuit comprises operational amplifier IC1, the IC2 that in-phase end links to each other with two-way dividing potential drop Acquisition Circuit output terminal respectively, and the resistor voltage divider circuit that links to each other with operational amplifier IC1, IC2 end of oppisite phase respectively of output terminal;
Described power supply decision circuitry comprises triode T1, T2, the base stage of triode T1, T2 links to each other with the output terminal of operational amplifier IC1, IC2 through resistance R 9, R10 respectively, the collector of triode T1, T2 is connected with relay J 1, J2 respectively, and relay J 1, J2 two ends are parallel with protection diode D3, D4 respectively;
Described logical signal produces the series arm that circuit comprises the relay J 3 that is connected in parallel on both ends of power and its normally opened contact J3-1, relay J 3 two ends are parallel with diode D5, and the normally opened contact J3-1 two ends of relay J 3 are parallel with the series arm of the normally opened contact J2 of the normally opened contact J1 of relay J 1 and relay J 2; The two ends of the normally closed contact J4-1 of the normally opened contact J3-2 of relay J 3, normally closed contact J3-3 and relay J 4 are the output terminal that links to each other with remote signaling harvester input end;
Described delay circuit comprises multivibrator, the PNP triode T3 that is made of 555 timers, the base stage of PNP triode T3 links to each other through the output terminal of resistance R 13 with 555 timers, collector is in series with relay J 4, relay J 4 two ends are parallel with diode D6, and the normally opened contact J4-2 of relay J 4 connects with the normally opened contact J2 of the normally opened contact J1 of relay J 1, relay J 2.
The utility model is that operational amplifier IC1, IC2 in the voltage comparator circuit provides reference voltage with direct current DC12V (this direct current is provided by civil power/generator power supply equally) by resistor voltage divider circuit; Operational amplifier IC1, IC2 adopt the operational amplifier of LM358 model.
The described delay circuit that comprises that 555 timers and peripheral cell are formed is realized about 10 seconds time-delay, connect the moment of 12VDC power supply when delay circuit, voltage on the peripheral cell capacitor C 3 is 0V, the output terminal output high level of 555 timers, PNP triode T3 ends, delay circuit is in temporary stable state, after the time-delay in about 10 seconds, voltage on the peripheral cell capacitor C 5 is greater than the 2/3DC power supply, the output terminal output low level of 555 timers, and delay circuit is in stable state, PNP triode T3 saturation conduction, relay J 4 adhesives action, its normally closed contact J4-2 disconnects, normally opened contact J4-1 closure.
As with mains-supplied the time, one tunnel dividing potential drop Acquisition Circuit (with 2 tunnel explanations that lay down a definition) can collect ac voltage signal, and another road dividing potential drop Acquisition Circuit (with 1 tunnel explanation that lays down a definition) can collect the voltage signal (promptly very little alternating voltage sampled signal) of about 0V; At this moment, the voltage signal that 1 tunnel dividing potential drop Acquisition Circuit is added on operational amplifier IC1 in-phase end is about 0V, admittedly be lower than the reference voltage (about 1 volt direct-flow steady voltage) of operational amplifier IC1 end of oppisite phase, operational amplifier IC1 output low level, triode T1 ends, relay J 1 is in release conditions, and its normally opened contact J1 is failure to actuate; 2 tunnel dividing potential drop Acquisition Circuit collect the alternating voltage sampled signal, behind diode D2, filter capacitor C2 rectifying and wave-filtering, transfer to the in-phase end (about 4 volts DC voltage sampled signal) of operational amplifier IC2, compare with the reference voltage that is added on operational amplifier IC2 end of oppisite phase (about 1 volt DC voltage), the output terminal output high level signal of operational amplifier IC2, high level signal makes triode T2 saturation conduction, relay J 2 adhesives action, its normally opened contact J2 closure; Because the normally opened contact J1 of relay J 1 disconnects, relay J 3 must not be in releasing means by electricity, and normally opened contact J3-2, the normally closed contact J3-3 state of relay J 3 are constant;
After mains supply and generator power supply switching, when powering with generator power supply, two-way dividing potential drop Acquisition Circuit all can collect ac voltage signal, the two-way ac voltage signal is respectively through diode D1, D2, filter capacitor C1, the C2 rectifying and wave-filtering, transfer to operational amplifier IC1, the in-phase end of IC2 (about 4 volts DC voltage sampled signal), with be added on operational amplifier IC1, the reference voltage of IC2 end of oppisite phase (about 1 volt DC voltage) relatively, operational amplifier IC1, the output terminal output high level signal of IC2, high level signal makes triode T1, the T2 saturation conduction, relay J 1, J2 adhesive action, its normally opened contact J1, the J2 closure, simultaneously, after the delay circuit time-delay in about ten seconds, so the normally opened contact J4-1 closure of relay J 4 is relay J 3 adhesives action, its normally opened contact J3-1 closure, relay J 3 is in self-locking state, normally opened contact J3-2 closure, and normally closed contact J3-3 disconnects.
The relay contact closure as the lead-out terminal that links to each other with remote signaling harvester input end is " 0 " in the circuit if logical signal produces, be broken as " 1 ", and the normally opened contact J3-2 that establishes relay J 3 is 1#, normally closed contact J3-3 is 2#, the normally closed contact of relay J 4 is 3#, and then the logical signal of 1#, 2#, the initial output of 3# is " 100 "; During with mains powered, the logical signal that 1#, 2#, 3# exported is " 011 "; When powering with generator power supply, the logical signal that 1#, 2#, 3# exported is " 101 "; During power failure, the logical signal that 1#, 2#, 3# exported is initial logic signal " 100 ";
As shown in Figure 2, realizing that there is double-throw conversion disconnecting link QS the working site that mains supply SD and generator power supply FD switch, at double-throw conversion disconnecting link QS and on the power supply line between the electric loading, be in series with air switch K near disconnecting link QS end, be in series with the normally opened contact J1 of contactor J1 near the electricity consumption load end, judgment means PD described in the utility model in use, after being connected in parallel on air switch K, on the power supply line before the contactor J1 normally opened contact J1, simultaneously, contactor J closed its contact J1 of certain hour (being generally 30 seconds) that need delay time, carry out power supply for power supply judgment means described in the utility model the time that provides be provided, the time-delay control that specifically how to realize contactor J1 be electronic applications the technician can easily realize.In addition, the circuit structure that described dividing potential drop Acquisition Circuit, voltage comparator circuit, power supply decision circuitry, delay circuit and logical signal produce circuit is varied, and the technician of electronic applications can realize with multiple structure.
Claims (2)
1, a kind of civil power, generator power supply judgment means, it is characterized in that: comprise the continuous two-way dividing potential drop Acquisition Circuit of input end and single phase power supply power lead, be connected and the voltage comparator circuit of two-way dividing potential drop Acquisition Circuit output terminal, the power supply decision circuitry that is connected in the voltage comparator circuit output terminal and the delay circuit of control power supply decision circuitry operational use time respectively, and be subjected to power supply decision circuitry and delay circuit logical signal control, that output terminal links to each other with machine room signal pickup assembly input end to produce circuit simultaneously.
2, civil power according to claim 1, generator power supply judgment means is characterized in that: described two-way dividing potential drop Acquisition Circuit comprises the two-way resistor voltage divider circuit, is connected to diode D1, D2 and filter capacitor C1, the C2 of two-way resistor voltage divider circuit output terminal; Described voltage comparator circuit comprises operational amplifier IC1, the IC2 that in-phase end links to each other with two-way dividing potential drop Acquisition Circuit output terminal respectively, and the resistor voltage divider circuit that links to each other with operational amplifier IC1, IC2 end of oppisite phase respectively of output terminal; Described power supply decision circuitry comprises triode T1, T2, the base stage of triode T1, T2 links to each other with the output terminal of operational amplifier IC1, IC2 through resistance R 9, R10 respectively, the collector of triode T1, T2 is connected with relay J 1, J2 respectively, and relay J 1, J2 two ends are parallel with protection diode D3, D4 respectively; Described logical signal produces the series arm that circuit comprises the relay J 3 that is connected in parallel on both ends of power and its normally opened contact J3-1, relay J 3 two ends are parallel with diode D5, and the normally opened contact J3-1 two ends of relay J 3 are parallel with the series arm of the normally opened contact J2 of the normally opened contact J1 of relay J 1 and relay J 2; The two ends of the normally closed contact J4-1 of the normally opened contact J3-2 of relay J 3, normally closed contact J3-3 and relay J 4 are the output terminal that links to each other with remote signaling harvester input end; Described delay circuit comprises multivibrator, the PNP triode T3 that is made of 555 timers, the base stage of PNP triode T3 links to each other through the output terminal of resistance R 13 with 555 timers, collector is in series with relay J 4, relay J 4 two ends are parallel with diode D6, and the normally opened contact J4-2 of relay J 4 connects with the normally opened contact J2 of the normally opened contact J1 of relay J 1, relay J 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820076205 CN201159761Y (en) | 2008-01-25 | 2008-01-25 | Commercial power, generator electric power judgment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820076205 CN201159761Y (en) | 2008-01-25 | 2008-01-25 | Commercial power, generator electric power judgment device |
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| Publication Number | Publication Date |
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| CN201159761Y true CN201159761Y (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820076205 Expired - Fee Related CN201159761Y (en) | 2008-01-25 | 2008-01-25 | Commercial power, generator electric power judgment device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196629A (en) * | 2011-02-01 | 2011-09-21 | 上海矽诺微电子有限公司 | Dimmable LED power driving device and light source device |
| CN103472407A (en) * | 2013-09-23 | 2013-12-25 | 迈普通信技术股份有限公司 | Dual-power state detection circuit, power supply system and dual-power state detection method |
| CN104035052A (en) * | 2014-06-13 | 2014-09-10 | 杭州大光明科技发展有限公司 | Oil machine electricity/mains supply detection method |
| CN106483396A (en) * | 2015-09-02 | 2017-03-08 | 艾默生网络能源有限公司 | A kind of identifying system of load supplying power supply and method |
| CN107333085A (en) * | 2017-08-16 | 2017-11-07 | 浙江大华技术股份有限公司 | A kind of power supply unit and electric power system |
| CN109149767A (en) * | 2018-09-06 | 2019-01-04 | 成都昊普环保技术有限公司 | A kind of base station electricity consumption differentiation and electric energy management system and method |
| CN109980768A (en) * | 2017-12-28 | 2019-07-05 | ***通信集团安徽有限公司 | Analysis method, device, equipment and the medium of communications node power supply state |
| US11196408B2 (en) | 2017-06-21 | 2021-12-07 | Zhejiang Dahua Technology Co., Ltd. | System and method for mixed transmission of signals and power supply through a single cable |
-
2008
- 2008-01-25 CN CN 200820076205 patent/CN201159761Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196629A (en) * | 2011-02-01 | 2011-09-21 | 上海矽诺微电子有限公司 | Dimmable LED power driving device and light source device |
| CN103472407A (en) * | 2013-09-23 | 2013-12-25 | 迈普通信技术股份有限公司 | Dual-power state detection circuit, power supply system and dual-power state detection method |
| CN104035052A (en) * | 2014-06-13 | 2014-09-10 | 杭州大光明科技发展有限公司 | Oil machine electricity/mains supply detection method |
| CN106483396A (en) * | 2015-09-02 | 2017-03-08 | 艾默生网络能源有限公司 | A kind of identifying system of load supplying power supply and method |
| US11196408B2 (en) | 2017-06-21 | 2021-12-07 | Zhejiang Dahua Technology Co., Ltd. | System and method for mixed transmission of signals and power supply through a single cable |
| CN107333085A (en) * | 2017-08-16 | 2017-11-07 | 浙江大华技术股份有限公司 | A kind of power supply unit and electric power system |
| CN109980768A (en) * | 2017-12-28 | 2019-07-05 | ***通信集团安徽有限公司 | Analysis method, device, equipment and the medium of communications node power supply state |
| CN109149767A (en) * | 2018-09-06 | 2019-01-04 | 成都昊普环保技术有限公司 | A kind of base station electricity consumption differentiation and electric energy management system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20110125 |