CN109615833A - A kind of method of dual power supply device looses power alarm - Google Patents
A kind of method of dual power supply device looses power alarm Download PDFInfo
- Publication number
- CN109615833A CN109615833A CN201910034009.7A CN201910034009A CN109615833A CN 109615833 A CN109615833 A CN 109615833A CN 201910034009 A CN201910034009 A CN 201910034009A CN 109615833 A CN109615833 A CN 109615833A
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- Prior art keywords
- power
- power supply
- way
- dual
- alarm
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
Abstract
A kind of method of dual power supply device looses power alarm can solve the technical issues of which power supply power-fail the alarm of dual power supply device looses power be difficult to identify.Include the following steps, S100, powers after being combined the double loop power supply of input using diode to veneer；Power supply after S200, combining places big storage capacitor, guarantees that veneer work a period of time can also be maintained when power down occurs for input power；S300, every road power supply place power-fail detection circuit before combining and carry out detection of power loss, and the result of detection is sent to the interrupt pin of processor；S400, when arbitrarily all power down occurs for power supply or two-way all the way, corresponding power-fail detection circuit hair is interrupted to processor, and processor can judge that power down all occurs for specific which or two-way, and report to network management.Using the present invention, for the equipment of dual power supply, there is the alarm, maintenance personnel excludes hidden danger early, and equipment is made to be restored to dual power supply redundancy guard mode, improves equipment reliability of operation.
Description
Technical field
The present invention relates to circuit design fields, and in particular to a kind of method of dual power supply device looses power alarm.
Background technique
Communication terminal device usually needs to provide power fail warning function, that is, when power down occurs for equipment, equipment can
It detects the exception, and reports the exception to network management, alerted, which is also referred to as Dying-Gasp function.It should to realize
Function, terminal device must have power-fail detection circuit, holding circuit of powering, several parts such as alarm report functional module.Power down
The comparator that detection circuit generally uses amplifier to constitute or the chip such as MAX706 realization with detection of power loss function, by comparing
Voltage judges whether power down, and generates alarm signal and give alarm report functional module.Power supply holding circuit generallys use big electricity
Hold and carry out energy storage, when power down occurs, the electric energy of storage can maintain equipment to continue to run a period of time, guarantee alarm report mould
Power fail warning information is sent to network management by block.Alarm report module is generally by processor or programmable logic device realization, the mould
Block is after receiving the power-off signal that detection of power loss module is sent, and with the format of agreement, upstream network management sends power fail warning letter immediately
Breath.
Certain communication terminal devices need to use dual power supply redundancy power supply to provide the reliability of equipment.It is being abnormal
When electric, equipment is also required to provide power fail warning function.It is different from single supply power supply unit, the state of dual power supply device looses power alarm
It is divided into single channel power fail warning and two-way power fail warning, specifically which power down is also wanted to identify for single channel power fail warning.
Summary of the invention
A kind of method of dual power supply device looses power alarm proposed by the present invention, can solve the alarm of dual power supply device looses power
The technical issues of being difficult to identify which power supply power-fail.
To achieve the above object, the invention adopts the following technical scheme:
A kind of method of dual power supply device looses power alarm, comprising the following steps:
S100, it powers after being combined the double loop power supply of input using diode to veneer；
Power supply after S200, combining places big storage capacitor, guarantees that veneer can also be maintained when power down occurs for input power
Work a period of time；
S300, every road power supply place the hysteresis comparator being made of amplifier before combining and carry out detection of power loss, the knot of detection
Fruit is sent to the interrupt pin of processor；
S400, when arbitrarily all power down occurs for power supply or two-way all the way, corresponding power-fail detection circuit hair is interrupted to processing
Device, processor can judge that power down all occurs for specific which or two-way, and report to network management.
As shown from the above technical solution, the method for dual power supply device looses power of the invention alarm has below beneficial to effect
Fruit:
Using the present invention, for the equipment of dual power supply, even if power supply power-fail all the way, alarm can be also sent, this
Although when equipment in addition can also continue to work normally under the power supply of power supply all the way, power supply does not have function of redundancy protection
, have the alarm, maintenance personnel excludes hidden danger early, so that equipment is restored to dual power supply redundancy guard mode, improves equipment
Reliability of operation.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the present invention；
Fig. 2 is the present invention program block diagram；
Fig. 3 is detection of power loss functional block diagram；
Fig. 4 is hysteresis comparator working principle.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
As shown in Figure 1, the method that a kind of dual power supply device looses power of the embodiment of the present invention alerts, including following step
It is rapid:
S100, it powers after being combined the double loop power supply of input using diode to veneer；
Power supply after S200, combining places big storage capacitor, guarantees that veneer can also be maintained when power down occurs for input power
Work a period of time；
S300, every road power supply place power-fail detection circuit before combining and carry out detection of power loss, and the result of detection is sent to processing
The interrupt pin of device；
S400, when arbitrarily all power down occurs for power supply or two-way all the way, corresponding power-fail detection circuit hair is interrupted to processing
Device, processor can judge that power down all occurs for specific which or two-way, and report to network management.
It is illustrated below in conjunction with attached drawing:
As shown in Fig. 2, the power supply to supply power with double circuit is VCC_1 and VCC_2, power supply VCC is obtained after diode is combined,
VCC generates the power supply powering load of various voltages using DC-DC module.Two-way input power is every detection of power loss all the way
Circuit.Assuming that power down occurs for VCC_1, equipment will be powered by VCC_2, when VCC_1 drops to the threshold value of setting, power-fail detection circuit
Alarm signal Vd_1 is sent out, which is connected to the interruption input pin of processor.Processor receives after the interruption with the lattice of agreement
Formula sends VCC_1 power fail warning information to network management.VCC_2 power down process process is similar, no longer describes.It is same with VCC_2 in VCC_1
When power down when, power-fail detection circuit send two alarm signal Vd_1 and Vd_2 to processor, processor to network management send VCC_1 with
The alarm of VCC_2 two-way power supply all power down.Under this situation, equipment during sending a warning message from transmission power down to processor
Power supply is discharged by the storage capacitor on VCC network to be realized.
The power-fail detection circuit of the present embodiment is as shown in Figure 3.It is realized using the hysteresis comparator circuit being made of General operational amplifier.
Voltage VCC_1 to be detected is sent to amplifier input negative terminal by obtaining voltage Vn after R2, R3 electric resistance partial pressure.Vref, R1, Rf constitute band
There is lag function positive-feedback circuit.
Hysteresis circuitry high threshold is Vth, Low threshold Vtl.The working principle of comparison circuit is as shown in figure 4, work as VCC_1 just
Often Vn voltage when power supply after VCC_1 partial pressure is higher than Vth, and comparator exports low level Vol, when power down, Vn voltage occur for VCC_1
When lower than Vtl, comparator exports high level Voh.The output voltage Vo of comparator obtains power down announcement after voltage division processing is isolated
Alert signal Vd_1 gives processor.The adjustable retarding window position Vref, R1, Rf and size are adjusted, prevents from accidentally alerting.VCC_
2 detection of power loss are similar, no longer describe.
With the present embodiment, processor can identify whether two-way power supply individually or simultaneously occurs power fail warning, convenient for dimension
Shield personnel exclude hidden danger in time, improve equipment reliability of operation.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (3)
1. a kind of method of dual power supply device looses power alarm, based on the power supply to supply power with double circuit, after diode is combined
The power supply powering load of various voltages is generated using DC-DC module to combining power supply VCC, VCC, it is characterised in that: including
Following steps,
S100, it powers after being combined the double loop power supply of input using diode to veneer；
Power supply after S200, combining places big storage capacitor, guarantees veneer can also be maintained to work when power down occurs for input power
For a period of time；
S300, every road power supply place power-fail detection circuit before combining and carry out detection of power loss, and the result of detection is sent to processor
Interrupt pin；
S400, when arbitrarily all power down occurs for power supply or two-way all the way, corresponding power-fail detection circuit hair is interrupted to processor, place
Reason device can judge that power down all occurs for specific which or two-way, and report to network management.
2. the method for dual power supply device looses power alarm according to claim 1, it is characterised in that: the step S300
In power-fail detection circuit use the hysteresis comparator circuit that is made of General operational amplifier, have corresponding power down per input power all the way
Detection circuit.
3. the method for dual power supply device looses power alarm according to claim 2, it is characterised in that: the detection of power loss
Circuit power supply to be detected is realized into access amplifier negative input end after partial pressure, the output end feedback of amplifier to amplifier positive input terminal
Sluggish comparing function；Amplifier output end is sent to processor interrupt pin after isolation partial pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034009.7A CN109615833A (en) | 2019-01-15 | 2019-01-15 | A kind of method of dual power supply device looses power alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034009.7A CN109615833A (en) | 2019-01-15 | 2019-01-15 | A kind of method of dual power supply device looses power alarm |
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| CN109615833A true CN109615833A (en) | 2019-04-12 |
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| CN201910034009.7A Pending CN109615833A (en) | 2019-01-15 | 2019-01-15 | A kind of method of dual power supply device looses power alarm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113406526A (en) * | 2020-03-17 | 2021-09-17 | 阿里巴巴集团控股有限公司 | Power supply access condition detection method and device |
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| CN103746444A (en) * | 2013-11-28 | 2014-04-23 | 苏州长风航空电子有限公司 | Dual-power bus cold standby power supply architecture and method |
| JP2014149343A (en) * | 2013-01-31 | 2014-08-21 | Kyocera Document Solutions Inc | Short interruption detection apparatus and image forming apparatus |
| CN204089330U (en) * | 2014-08-08 | 2015-01-07 | 广东电网公司电力科学研究院 | A kind of adaptive power-supply battery supplies power with double circuit device |
| CN207117578U (en) * | 2017-04-07 | 2018-03-16 | 深圳市大疆创新科技有限公司 | Protection circuit |
| CN208299815U (en) * | 2018-06-20 | 2018-12-28 | 杭州光芯科技有限公司 | A kind of network probe equipment with dual power supply input and power-off protection |
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2019
- 2019-01-15 CN CN201910034009.7A patent/CN109615833A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014149343A (en) * | 2013-01-31 | 2014-08-21 | Kyocera Document Solutions Inc | Short interruption detection apparatus and image forming apparatus |
| CN103746444A (en) * | 2013-11-28 | 2014-04-23 | 苏州长风航空电子有限公司 | Dual-power bus cold standby power supply architecture and method |
| CN204089330U (en) * | 2014-08-08 | 2015-01-07 | 广东电网公司电力科学研究院 | A kind of adaptive power-supply battery supplies power with double circuit device |
| CN207117578U (en) * | 2017-04-07 | 2018-03-16 | 深圳市大疆创新科技有限公司 | Protection circuit |
| CN208299815U (en) * | 2018-06-20 | 2018-12-28 | 杭州光芯科技有限公司 | A kind of network probe equipment with dual power supply input and power-off protection |
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| CN113406526A (en) * | 2020-03-17 | 2021-09-17 | 阿里巴巴集团控股有限公司 | Power supply access condition detection method and device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190412 |
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| RJ01 | Rejection of invention patent application after publication |