CN103033672A - Method for power failure monitoring and warning - Google Patents
Method for power failure monitoring and warning Download PDFInfo
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- CN103033672A CN103033672A CN2012105499093A CN201210549909A CN103033672A CN 103033672 A CN103033672 A CN 103033672A CN 2012105499093 A CN2012105499093 A CN 2012105499093A CN 201210549909 A CN201210549909 A CN 201210549909A CN 103033672 A CN103033672 A CN 103033672A
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Abstract
The invention provides a method for power failure monitoring and warning, and belongs to the technical field of power environment monitoring. The method solves the problems that existing circuits utilizing the method of sampling alternate current for monitoring whether power is on or not are excessive complex and high in cost, an analog quantity monitoring system is high in application cost and the like. According to the method for the power failure monitoring and warning, after city power passes a power source conversion device, the city power is supplied to devices or supplied to devices as well as charging batteries. Direct-current output voltage of the power source conversion device serves as sampling voltage, is fed into a power failure monitor or a monitor circuit, and also serves as a power source of the power failure monitor or the monitor circuit. Stable reference voltage is generated in the power failure monitor or the monitor circuit. After the sampling voltage and the reference voltage are compared by a comparator in the power failure monitor or the monitor circuit, a comparison value is obtained. After the sampling voltage drops, the fact that a sampling value is smaller than a reference value A1 or the comparison value is larger than or equal to X1 is caused, a power failure warning signal is sent to a monitoring center. The method for the power failure monitoring and warning is simple, low in implementation cost and strong in operability.
Description
Technical field
The invention belongs to the dynamic environment monitoring technical field, refer in particular to a kind of power failure monitoring alarming method for power.
Background technology
Communication and other machine room, the equipment at machine station generally all dispose power-supply device, be generally Switching Power Supply or rectifier, UPS, and backup battery etc., civil power through the device transform such as Switching Power Supply become powered by direct current to communication facilities etc. or through power devices such as UPS to communication facilities etc., corresponding Switching Power Supply VD or UPS dc voltage can obviously descend after having a power failure.
At present, communication and other machine room, machine station etc. all are to adopt monitoring civil power ac voltage signal, the judgement of making power failure according to the size of the ac voltage of sampling generates alarm signal simultaneously, monitoring method is owing to be that alternating current is sampled like this, therefore required sample circuit is complicated, the dielectric strength of corresponding monitoring equipment (or circuit) and lightning protection, Anti-surging requirement height, its cost is just higher, and is subject to the impact of civil power surge voltage and easily damage.In addition, a kind of equipment or circuit that also generates low pressure or undervoltage alarm by gathering the power supply DC voltage when magnitude of voltage is lower than settings also arranged at present, but this alarm signal is a kind of dc low-voltage or undervoltage alarm signal only usually, and the output voltage situation of more accurately monitoring the power supply at machine room, machine station etc. with respect to needs exists obvious deficiency.
Summary of the invention
The purpose of this invention is to provide a kind of simply, more accurately judging whether and have a power failure, and a kind of monitoring alarming method for power of monitoring electric power output voltage and the general situation of monitoring of environmental temperature.
The object of the present invention is achieved like this: a kind of power failure monitoring alarming method for power, civil power behind power conversion device for power devices or not only given power devices but also charge the battery, it is characterized in that: the VD of power taking source conversion equipment is sent into power failure monitor or observation circuit as sampling voltage, also as the power supply source of power failure monitor or observation circuit, generate stable reference value in power failure monitor or the observation circuit, draw fiducial value behind the comparer in sampling value and reference value stop over pyroelectric monitor device or the observation circuit.After the power failure, when sampling voltage descend cause sampling value less than reference value A1 after or behind fiducial value 〉=X1, electric power monitor or observation circuit send current failure alarm to monitoring center.
The present invention adopts the VD of power-supply device is taken a sample, therefore sample circuit structure of the present invention is simple and production cost is low than the alternating current sample circuit, and simultaneously the present invention can generate by the size of fiducial value the multistage signal and accurately judge whether to have a power failure and the monitoring electric power output voltage with this.
In above-mentioned a kind of power failure monitoring alarming method for power, described sampling value less than reference value A2 after or behind the fiducial value 〉=(X1+X2), electric power monitor or observation circuit send the low pressure early warning signal to monitoring center; Sampling value less than reference value A3 after or behind the fiducial value 〉=(X1+X2+X3), electric power monitor or observation circuit send the undervoltage warning signal to monitoring center.Such as the more signals of needs, by that analogy.
In above-mentioned a kind of power failure monitoring alarming method for power, temp probe measures ambient temperature or battery surface temperature and be electric signal with the temperature transition measured, respectively with electric power monitor or observation circuit in reference value relatively, after draw fiducial value: after sampling value is greater than reference value B1 or behind fiducial value 〉=Y1, monitor or observation circuit send the high temperature alarm signal to monitoring center; After sampling value is greater than reference value B2 or fiducial value 〉=(Y1+Y2) after, monitor or observation circuit send the superhigh temperature alerting signal to monitoring center.
In above-mentioned a kind of power failure monitoring alarming method for power, described power failure monitor or observation circuit comprise: DC voltage sample circuit, comparer, switching value signal generating circuit and environmental monitoring temperature signal change-over circuit.
In above-mentioned a kind of power failure monitoring alarming method for power, described reference value and alarming value all can be adjusted according to actual conditions.
The present invention compared to existing technology outstanding and useful technique effect is:
1, the present invention is by direct sample dc voltage or cell voltage, need not be from electric main side-draw sample, and can need not signal lines from the input power sampling of power failure monitor or observation circuit, DC voltage sampling and contrast circuit etc. are comparatively simple, reliability is strong.
2, the direct current sampling of the present invention's employing need not to add in addition anti-surge circuit, and the thunderbolt possibility is low, and the sampling voltage grade is low, be not to exchange sampling, so corresponding power failure monitor or low, the failure rate is low of observation circuit cost.
3, the present invention compares by sampling value and reference value, according to different value, cause corresponding power failure, low pressure early warning, undervoltage alarm, high temperature alarm, superhigh temperature alarm etc., can accurately go out to judge whether have a power failure, roughly the DC voltage situation of judging, environment or battery temperature situation, do not need complicated analog quantity monitoring system, therefore reduced production and application cost.
Description of drawings
Fig. 1 is power failure monitoring implementing procedure figure of the present invention.
Fig. 2 is temperature detection workflow diagram of the present invention.
Embodiment
The invention will be further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1-2:
A kind of power failure monitoring alarming method for power, civil power behind power conversion device for power devices or not only given power devices but also charge the battery, the VD of power taking source conversion equipment is sent into power failure monitor or observation circuit as sampling voltage, also as the power supply source of power failure monitor or observation circuit, generate stable reference value in power failure monitor or the observation circuit, draw fiducial value behind the comparer in sampling value and reference value stop over pyroelectric monitor device or the observation circuit.After sampling voltage decline causes sampling value less than reference value A1 or behind fiducial value 〉=X1, electric power monitor or observation circuit send current failure alarm to monitoring center, the present invention adopts the VD of power conversion device (can be Switching Power Supply or UPS etc.) is taken a sample, therefore sample circuit structure of the present invention is simple and production cost is low than the alternating current sample circuit, and simultaneously the present invention can generate by the size of fiducial value the multistage signal and accurately judge whether to have a power failure and the monitoring electric power output voltage with this.
After above-mentioned sampling value is less than reference value A2 or fiducial value 〉=(X1+X2) after, electric power monitor or observation circuit send the low pressure early warning signal to monitoring center; Sampling value less than reference value A3 after or behind the fiducial value 〉=(X1+X2+X3), electric power monitor or observation circuit send the undervoltage warning signal to monitoring center.Such as the more signals of needs, by that analogy.
Same, be electric signal by temp probe measures ambient temperature or battery surface temperature and with the temperature transition measured, respectively with electric power monitor or observation circuit in reference value relatively, after draw fiducial value: after sampling value is greater than reference value B1 or behind fiducial value 〉=Y1, monitor or observation circuit send the high temperature alarm signal to monitoring center; After sampling value is greater than reference value B2 or fiducial value 〉=(Y1+Y2) after, monitor or observation circuit send the superhigh temperature alerting signal to monitoring center.
In above-mentioned a kind of power failure monitoring alarming method for power, described power failure monitor or observation circuit comprise: DC voltage sample circuit, comparer, switching value signal generating circuit and environment measuring signaling conversion circuit.
Above-mentioned reference value and alarming value all can be adjusted according to actual conditions.Alarming value is respectively power failure alarming value X1, low pressure early warning value (X1+X2), undervoltage warning value (X1+X2+X3) and high temperature alarm value Y1, superhigh temperature alarming value (Y1+Y2).
Principle of work of the present invention is: civil power under normal circumstances, the VD of power conversion device is that a galvanic current is pressed (such as 54V), when having a power failure, electric power output voltage sharply descends, the output voltage of without male offspring standby battery drops to 0V at once, the very fast decline of output voltage and declining by a big margin when backup battery is arranged, in the voltage drop process, cause sampling value less than reference value A1(as corresponding to 52V) after, or behind fiducial value 〉=X1, foundation as mains failure, same sampling value less than reference value A2(as corresponding to 48V) after, or behind the fiducial value 〉=(X1+X2) as the foundation of low pressure early warning etc., when sampling value less than reference value A3(as corresponding to 47V) after, or behind the fiducial value 〉=(X1+X2+X3) as the foundation of undervoltage alarm etc., work as the city power recovery, corresponding DC voltage rising then, corresponding each alarm disappears, sampling value little greater than reference value A1(as corresponding to 52V) after, or fiducial value can be used as the foundation of city power recovery after less than X1.When breaking down, cause power supply itself battery discharge also can be equal to power failure alarm (and the failure rate of power supply itself is very low), owing to do not recover then to need the maintainer to remove scene rush to repair in long period power failure alarm, then can distinguish true the power failure or power fail.Battery discharge behind power failure or the power fail, its sparking voltage meeting continuous decrease compares by the detection to each voltage section, produces corresponding alarm with this, so that the room management personnel understand the cardinal principle situation of the supply voltage at machine station, is convenient to timely processing; Also compare by the detection to environment temperature, produce the alarm of corresponding each temperature grade with this, so that the room management personnel understand the environment temperature at machine station or the cardinal principle situation of battery surface temperature, be convenient to timely processing, wherein: (X1+X2+X3)＞(X1+X2)＞X1.
Above-described embodiment is preferred embodiment of the present invention only, is not to limit according to this protection scope of the present invention, so: all equivalences of doing according to structure of the present invention, shape, principle change, and all should be covered by within protection scope of the present invention.
Claims (5)
1. alarming method for power is monitored in a power failure, civil power behind power conversion device for power devices or not only given power devices but also charge the battery, it is characterized in that: the VD of power taking source conversion equipment is sent into power failure monitor or observation circuit as sampling voltage, also as the power supply source of power failure monitor or observation circuit, generate stable reference voltage in power failure monitor or the observation circuit, draw fiducial value behind the comparer in sampling voltage and reference voltage stop over pyroelectric monitor device or the observation circuit, after sampling voltage decline causes sampling value less than reference value A1, or behind fiducial value 〉=X1, electric power monitor or observation circuit send current failure alarm to monitoring center.
2. a kind of power failure monitoring alarming method for power according to claim 1 is characterized in that: described sampling value less than reference value A2 after or behind the fiducial value 〉=(X1+X2), electric power monitor or observation circuit send the low pressure early warning signal to monitoring center; Sampling value less than reference value A3 after or behind the fiducial value 〉=(X1+X2+X3), electric power monitor or observation circuit send the undervoltage warning signal to monitoring center.
3. alarming method for power is monitored in a kind of power failure according to claim 1, it is characterized in that: be electric signal by temp probe measures ambient temperature or battery surface temperature with the temperature transition of measuring, respectively with electric power monitor or observation circuit in reference value relatively, after draw fiducial value: after sampling value is greater than reference value B1 or behind fiducial value 〉=Y1, monitor or observation circuit send the high temperature alarm signal to monitoring center; After sampling value is greater than reference value B2 or fiducial value 〉=(Y1+Y2) after, monitor or observation circuit send the superhigh temperature alerting signal to monitoring center.
4. alarming method for power is monitored in a kind of power failure according to claim 1, and it is characterized in that: described monitor or observation circuit comprise: DC voltage sample circuit, comparer, switching value signal generating circuit and environmental monitoring temperature signal change-over circuit.
5. alarming method for power is monitored in the described a kind of power failure of Arbitrary Term according to claim 1-4, and it is characterized in that: described reference value and alarming value all can be adjusted according to actual conditions.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105499093A CN103033672A (en) | 2012-12-17 | 2012-12-17 | Method for power failure monitoring and warning |
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| CN2012105499093A CN103033672A (en) | 2012-12-17 | 2012-12-17 | Method for power failure monitoring and warning |
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| CN103033672A true CN103033672A (en) | 2013-04-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341076A (en) * | 2020-03-23 | 2020-06-26 | 国网山东省电力公司成武县供电公司 | Power failure alarm and system |
| CN111707962A (en) * | 2020-08-20 | 2020-09-25 | 上海南麟电子股份有限公司 | Alternating current detection circuit |
| CN111879828A (en) * | 2020-07-27 | 2020-11-03 | 宁夏若伯新技术有限公司 | Safety automatic monitoring method for laboratory personnel and equipment |
| CN111929504A (en) * | 2020-09-28 | 2020-11-13 | 上海南麟电子股份有限公司 | Alternating current resistance detection circuit and system |
-
2012
- 2012-12-17 CN CN2012105499093A patent/CN103033672A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341076A (en) * | 2020-03-23 | 2020-06-26 | 国网山东省电力公司成武县供电公司 | Power failure alarm and system |
| CN111879828A (en) * | 2020-07-27 | 2020-11-03 | 宁夏若伯新技术有限公司 | Safety automatic monitoring method for laboratory personnel and equipment |
| CN111707962A (en) * | 2020-08-20 | 2020-09-25 | 上海南麟电子股份有限公司 | Alternating current detection circuit |
| CN111929504A (en) * | 2020-09-28 | 2020-11-13 | 上海南麟电子股份有限公司 | Alternating current resistance detection circuit and system |
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Application publication date: 20130410 |