CN104459288A - Telecommunication terminal power supply low-voltage alarm - Google Patents
Telecommunication terminal power supply low-voltage alarm Download PDFInfo
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- CN104459288A CN104459288A CN201410733702.0A CN201410733702A CN104459288A CN 104459288 A CN104459288 A CN 104459288A CN 201410733702 A CN201410733702 A CN 201410733702A CN 104459288 A CN104459288 A CN 104459288A
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- low pressure
- pressure alarm
- power supply
- voltage
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Abstract
The invention relates to a telecommunication terminal power supply low-voltage alarm which is used for being connected between a terminal power supply DC socket and an adapter DC socket in parallel. The telecommunication terminal power supply low-voltage alarm comprises a low-voltage alarm body, a digital display voltage meter, a DC power supply patch cord and a protection shell. The low-voltage alarm body is fixed into the protection shell. The digital display voltage meter, the DC power supply patch cord and the low-voltage alarm body are connected. The telecommunication terminal power supply low-voltage alarm has the advantages of having an automatic low-voltage detecting function and being high in accuracy and use safety.
Description
Technical field
The present invention relates to a kind of low pressure alarm, particularly a kind of power supply low pressure alarm being applicable to telecommunication terminal.
Background technology
Existing China Telecom user side accesses terminal (being commonly called as broadband cat) and IPTV set top box, all adopt 220V to exchange the power supply turning 12V direct current.Along with the improvement of living condition, nowadays, kind is not only by the electrical equipment that huge numbers of families use, and quantity also gets more and more, and power consumption aspect is also increasing, such as air-conditioning, refrigerator-freezer, computer, floor heating, electromagnetic oven etc.These " are eaten TV university family " and user power utilization load will be caused excessive, cause input voltage not reach 220V, and the voltage making power supply export to telecommunication terminal does not reach specified 12V yet, and terminal nature, with regard to job insecurity, produces broadband suspension, the faults such as communication disruption.And these faults have roughly the same point, be exactly that line quality is fine, replaced terminal, but problem still fails to solve, and causes distinguishing maintenance interface, causes both sides' at substantial manpower and time to differentiate.
The terminal of China Telecom is all adopt the mode of freely renting to be supplied to client, most of terminal is all judge aftertreatment by dress dimension person scene, because of cannot the localization of faults, distinguish maintenance interface, dress dimension person blindly can only change terminal and cause dress dimension inefficiency, and fault repetition rate is high, user awareness is lower, be many times because user's alternating voltage instability causes power supply adaptor to export DC voltage deficiency in fact, have impact on the normal work of terminal, produce the faults such as broadband goes offline, service disconnection.And process for want of suitable Work tool of this kind of fault, need at substantial time and manpower and materials, not only have impact on dress dimension indicator, also reduce user awareness.
Because there is no ready-made telecommunication terminal power supply low voltage test equipment at present, so need now to study a kind of DC low-voltage alarm, when terminal does not reach rated voltage, automatically send the sound and light warning, remind the attention of people.DC low-voltage alarm is generally used in model toy.Such as aircraft model plane, if undertension, then may fall in high-altitude flight, gently then cause model plane to damage, heavy then security incident occurs.Therefore model plane such as the extensive aircraft to high-quality, automobile, speedboat both at home and abroad, increase low-voltage alarm in inside, if cell voltage is lower than threshold values, then trigger LED or buzzer alert, notice that electric power is not enough with advance notice operator.
Summary of the invention
The object of the invention is, in order to overcome above deficiency, to provide one to possess automatic low-voltage detection function, precision is accurate, the telecommunication terminal power supply low pressure alarm that usage safety performance is high.
Object of the present invention is achieved through the following technical solutions: a kind of telecommunication terminal power supply low pressure alarm; described telecommunication terminal power supply low pressure alarm is used for being connected in parallel between terminal supplying power DC jack and adapter DC plug; comprise: low pressure alarm, digital display voltmeter, DC power switching line and containment vessel; described low pressure alarm is fixing in a protective case, and described digital display voltmeter, DC power switching line are connected with low pressure alarm.
Further improvement of the present invention is: the wire of the male of described DC power switching line, female and digital display voltmeter is welded on B+ and the B-contact of low pressure alarm by both positive and negative polarity.
Further improvement of the present invention is: described low pressure alarm comprises input switch, adjustable resistance, dual-colored LED lamp, hummer and voltage comparator.
Further improvement of the present invention is: described low pressure alarm comprises two resistance R1, R2, two resistance R1, R2 are connected, one end of resistance R1 is connected with input switch, for inputting voltage to be detected, the other end of resistance R2 is earth terminal, the positive input of voltage comparator is connected with resistance R2, and the reverse input end of described voltage comparator is connected with hummer with dual-colored LED lamp.
Further improvement of the present invention is: described voltage comparator is LM339 voltage comparator.
The method of telecommunication terminal power supply low pressure alarm is installed, comprises the following steps:
A, the wire of the male of DC power switching line, female and digital display voltmeter is welded on B+ and the B-contact of low pressure alarm by both positive and negative polarity, then low pressure alarm is fixing in a protective case with glue rifle, containment vessel is made with waste and old ADSL separator shell, above containment vessel, cut a hole an aperture, expose the dual-colored LED lamp of low pressure alarm;
The power supply adaptor of B, use adjustable voltage carries out threshold values setting to low pressure alarm, predeterminated voltage is just reported to the police lower than 10.8V, first the power supply adaptor of adjustable voltage is adjusted to and is shown as 10.8V on digital display voltmeter, then the adjustable resistance of low pressure alarm is rotated, until buzzer warning, LED variable color, arranges and just completes.
Further improvement of the present invention is: described adapter is the adjustable dc voltage power supply adaptor of 0 ~ 12V.
The present invention compared with prior art has the following advantages:
(1) increase there is the low pressure alarm of LED and hummer, can in the face of all groups, without the need on duty for a long time, by the transmission of sound and light, can low voltage failure be grasped.
(2) digital display voltmeter is housed, current change in voltage can be shown.
(3) waste and old ADSL separator shell is adopted to make containment vessel, cost efficiency.
(4) adopt DC power switching line, can measure as long as be socketed between power supply adaptor and terminal, simple to operate easy to learn.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the circuit diagram of low pressure alarm;
Number in the figure: 1-low pressure alarm, 2-digital display voltmeter, 3-DC power switching line, 4-containment vessel, 5-input switch, 6-adjustable resistance, 7-dual-colored LED lamp, 8-hummer, 9-voltage comparator.
embodiment:
in order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
As Fig. 1 shows the embodiment of a kind of telecommunication terminal power supply of the present invention low pressure alarm, at present along with the fast development of broadband market, telecommunications number of broadband customers is more than 1,000,000, and user group spreads all over rural area, cities and towns, we cannot judge user power utilization situation, when discovery subscriber's line quality meets standard, under the prerequisite that terminal is also changed, by telecommunication terminal power supply low pressure alarm is attempted by between terminal and power supply adaptor, not only can show the DC voltage of current output, and sound and light alarm can also be carried out to low-voltage, compact, with low cost, convenient dress dimension person carries with, can on-the-spotly judge, also can user be allowed " to see " in Long-Time Service and " listening " to voltage failure, the exceptional fault that quick position spread of voltage causes, specify maintenance interface, adopt telecommunication terminal low-voltage alarm, can save process this type of fault consume 80% manpower, repeat number of times minimizing 50% of visiting.
When terminal supplying power is powered, whether monitoring output voltage is up to standard in real time for low-voltage alarm 1, when input voltage is unstable, and trigger alarm function, allow user or dress dimension person just can be found the generation of fault by audiovisual official, can grasp the situation of change of output voltage soon in real time.
Telecommunication terminal power supply low pressure alarm, be made up of low pressure alarm 1, digital display voltmeter 2, DC power switching line 3, containment vessel 4 etc., its core is exactly low pressure alarm 1, it is made up of input switch 5, adjustable resistance 6, dual-colored LED lamp 7, hummer 8 and voltage comparator 9, the present invention is by adopting LM339 voltage comparator as the core of low pressure alarm, four independently voltage comparators are equipped with in LM339 integrated package inside, the feature of this voltage comparator is: 1) offset voltage is little, and representative value is 2mV; 2) supply voltage wide ranges, single supply is 2-36V, and dual-supply voltage is ± 1V-± 18V; 3) wider to the internal resistance restriction of comparing signal source; 4) common mode range is very large, is 0 ~ (Ucc-1.5V) Vo; 5) differential input voltage range is comparatively large, large to equaling supply voltage; 6) output terminal current potential can be selected flexibly and easily, the low-voltage alarm made by using this integrated package, by adjustable resistance 6, being set to by voltage alarm lower than 12V voltage range minimum-10% deviation is 10.8V, is connected in parallel between terminal and power supply adaptor, when VD is lower than 10.8V, terminal then may produce fluctuation of service, and integrated pin produces low level, activates LED and hummer, produce and report to the police, people just can grasp change in voltage situation fast by eye and ear.
First the wire of DC power switching line male, female and digital display voltmeter is welded on B+ and the B-contact of low pressure alarm by both positive and negative polarity when installing telecommunication terminal power supply low pressure alarm; then low pressure alarm is fixing in a protective case with glue rifle; containment vessel is made with waste and old ADSL separator shell; an aperture is cut a hole above containment vessel; expose the LED of low pressure alarm, then use the power supply adaptor of adjustable voltage to carry out threshold values setting to low pressure alarm.
Telecommunication terminal power supply low pressure alarm is compared with other products, specific as follows:
Power supply low pressure alarm has the low pressure alarm of adjustable resistance as can be seen from the above table, pre-set low pressure alarming threshold value can be passed through, there is dual-colored LED lamp and hummer simultaneously, can sound and light alarm be reached, when voltage is lower than preset alarm threshold values, then activate LED to redden look and hummer work, if exceed preset alarm threshold values, then LED virescence, hummer stop alarm, digital display voltmeter is housed, the change of voltage value can be observed at any time.
Current telecommunications wide-band terminal power supply adaptor is 12V, and detail router is 9V, when user's mixed insertion time, there will be fault, especially the speech business of FTTH terminal can often be interrupted, therefore, from 9V, as the original value before test, every 0.2V is an increment, progressively test, record its data, full load running is carried out to terminal, find when output voltage is after lower than 10 of 12V after test neutralization test, namely when output voltage is lower than 10.8V, terminal just there will be exception.Therefore the alarming threshold value of the present embodiment is set to 10.8V, namely predeterminated voltage is just reported to the police lower than 10.8V, first the power supply adaptor of adjustable voltage is shown as 10.8V on digital display voltmeter, then the adjustable resistance of low pressure alarm is rotated, until buzzer warning, LED variable color, arranges and just completes.
As shown in Figure 2, setting U2=5v is the driving voltage of LM339 voltage comparator 9, Uin inputs voltage to be detected, usually, terminal cat source nominal voltage is 12V, when input voltage is lower than the 90%(10.8V of rated voltage) time, cat is then because under-voltage and operation irregularity, and it is alarm voltage that whole circuit arranges 10.8V.R1 gets 46K Ω, R2 gets 100k Ω variable resistor, regulate R2, when R2 equals 50K Ω to location resistance, LM339 positive input input voltage is 5V, when Uin input voltage is lower than 10.8v, LM339 positive input voltage lower than 5V, lower than reverse input voltage, now LM39 output terminal output low level, LED is bright, buzzer warning.
Low-voltage alarm can also be listed on terminal direct supply in use, then one piece of D.C. voltmeter, the i.e. change of observable electric current in parallel, pass through sound and light alarm when low-voltage.
Telecommunication terminal power supply low pressure alarm of the present invention is for judging the low voltage failure causing terminal works exception, by increasing the low pressure alarm 1 with LED and hummer, can in the face of all groups, without the need on duty for a long time, by the transmission of sound and light, low voltage failure can be grasped, digital display voltmeter 2 is housed, current change in voltage can be shown, waste and old ADSL separator shell is adopted to make containment vessel, cost efficiency, adopt DC power switching line 3, can measure as long as be socketed between power supply adaptor and terminal, simple to operate easy to learn, be core by adopting LM339 voltage comparator 9 with low-voltage alarm, increase digital display voltmeter 2 and DC power switching line 3, create simple and practical telecommunication terminal low-voltage alarm, just terminal supplying power problem can be judged by " seeing " and " listening ", the input voltage problem of terminal problem or user family, what fast understand distinguishes maintenance interface, greatly shorten the judgement duration of this type of fault, improve maintenance efficiency, promote the satisfaction of user.
The another statement of applicant, the present invention illustrates implementation method of the present invention and apparatus structure by above-described embodiment, but the present invention is not limited to above-mentioned embodiment, does not namely mean that the present invention must rely on said method and structure could be implemented.Person of ordinary skill in the field should understand, any improvement in the present invention, replaces and the interpolation of step, concrete way choice etc., all drop within protection scope of the present invention and scope of disclosure implementation method equivalence selected by the present invention.The present invention is not limited to above-mentioned embodiment, and all employings and analog structure of the present invention and method thereof realize all modes of the object of the invention, all within protection scope of the present invention.
Claims (7)
1. a telecommunication terminal power supply low pressure alarm; it is characterized in that; described telecommunication terminal power supply low pressure alarm is used for being connected in parallel between terminal supplying power DC jack and adapter DC plug; comprise: low pressure alarm, digital display voltmeter, DC power switching line and containment vessel; described low pressure alarm is fixing in a protective case, and described digital display voltmeter, DC power switching line are connected with low pressure alarm.
2. telecommunication terminal power supply low pressure alarm according to claim 1, is characterized in that: the wire of the male of described DC power switching line, female and digital display voltmeter is welded on B+ and the B-contact of low pressure alarm by both positive and negative polarity.
3. telecommunication terminal power supply low pressure alarm according to claim 2, is characterized in that: described low pressure alarm comprises input switch, adjustable resistance, dual-colored LED lamp, hummer and voltage comparator.
4. telecommunication terminal power supply low pressure alarm according to claim 3, it is characterized in that: described low pressure alarm comprises two resistance R1, R2, two resistance R1, R2 are connected, one end of resistance R1 is connected with input switch, for inputting voltage to be detected, the other end of resistance R2 is earth terminal, and the positive input of voltage comparator is connected with resistance R2, and the reverse input end of described voltage comparator is connected with hummer with dual-colored LED lamp.
5. telecommunication terminal power supply low pressure alarm according to claim 4, is characterized in that: described voltage comparator is LM339 voltage comparator.
6. the method for telecommunication terminal power supply low pressure alarm described in claim 1 is installed, it is characterized in that, comprise the following steps:
A, the wire of the male of DC power switching line, female and digital display voltmeter is welded on B+ and the B-contact of low pressure alarm by both positive and negative polarity, then low pressure alarm is fixing in a protective case with glue rifle, containment vessel is made with waste and old ADSL separator shell, above containment vessel, cut a hole an aperture, expose the dual-colored LED lamp of low pressure alarm;
The power supply adaptor of B, use adjustable voltage carries out threshold values setting to low pressure alarm, predeterminated voltage is just reported to the police lower than 10.8V, first the power supply adaptor of adjustable voltage is adjusted on digital display voltmeter and is shown as 10.8V, then the adjustable resistance of low pressure alarm is rotated, until buzzer warning, LED variable color, arranges and just completes.
7. the method for telecommunication terminal power supply low pressure alarm is installed according to claim 6, it is characterized in that: described adapter is the adjustable dc voltage power supply adaptor of 0 ~ 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410733702.0A CN104459288A (en) | 2014-12-05 | 2014-12-05 | Telecommunication terminal power supply low-voltage alarm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410733702.0A CN104459288A (en) | 2014-12-05 | 2014-12-05 | Telecommunication terminal power supply low-voltage alarm |
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| CN104459288A true CN104459288A (en) | 2015-03-25 |
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| CN201410733702.0A Pending CN104459288A (en) | 2014-12-05 | 2014-12-05 | Telecommunication terminal power supply low-voltage alarm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621323A (en) * | 2017-08-31 | 2018-01-23 | 广州中铁信息工程有限公司 | A kind of pull force calculation intelligence fastener |
| CN112037828A (en) * | 2020-11-09 | 2020-12-04 | 深圳市芯天下技术有限公司 | Charge pump output voltage stability detection method, circuit and nonvolatile memory |
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| JPS5752930A (en) * | 1980-09-11 | 1982-03-29 | General Denshi Kogyo Kk | Alarm display system for power supply voltage drop |
| JPH03218477A (en) * | 1990-01-24 | 1991-09-26 | Hitachi Ltd | Low voltage detector for power supply unit |
| CN102346215A (en) * | 2011-10-10 | 2012-02-08 | 黄宇嵩 | Low-voltage alarm circuit with general battery pack |
| CN202421308U (en) * | 2012-02-13 | 2012-09-05 | 肖兰 | Voltage monitoring alarm |
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| CN202939216U (en) * | 2012-12-11 | 2013-05-15 | 烟台史密得机电设备制造有限公司 | Commercial-power high and low limit alarm system |
| CN103698587A (en) * | 2013-11-28 | 2014-04-02 | 青岛歌尔声学科技有限公司 | Low-voltage alarm circuit and method |
| CN204241551U (en) * | 2014-12-05 | 2015-04-01 | 中国电信股份有限公司南通分公司 | Telecommunication terminal power supply low pressure alarm |
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2014
- 2014-12-05 CN CN201410733702.0A patent/CN104459288A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752930A (en) * | 1980-09-11 | 1982-03-29 | General Denshi Kogyo Kk | Alarm display system for power supply voltage drop |
| JPH03218477A (en) * | 1990-01-24 | 1991-09-26 | Hitachi Ltd | Low voltage detector for power supply unit |
| CN102346215A (en) * | 2011-10-10 | 2012-02-08 | 黄宇嵩 | Low-voltage alarm circuit with general battery pack |
| CN202421308U (en) * | 2012-02-13 | 2012-09-05 | 肖兰 | Voltage monitoring alarm |
| CN202815072U (en) * | 2012-07-11 | 2013-03-20 | 河南省电力公司郑州供电公司 | Storage battery under-voltage indicator |
| CN202939216U (en) * | 2012-12-11 | 2013-05-15 | 烟台史密得机电设备制造有限公司 | Commercial-power high and low limit alarm system |
| CN103698587A (en) * | 2013-11-28 | 2014-04-02 | 青岛歌尔声学科技有限公司 | Low-voltage alarm circuit and method |
| CN204241551U (en) * | 2014-12-05 | 2015-04-01 | 中国电信股份有限公司南通分公司 | Telecommunication terminal power supply low pressure alarm |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621323A (en) * | 2017-08-31 | 2018-01-23 | 广州中铁信息工程有限公司 | A kind of pull force calculation intelligence fastener |
| CN112037828A (en) * | 2020-11-09 | 2020-12-04 | 深圳市芯天下技术有限公司 | Charge pump output voltage stability detection method, circuit and nonvolatile memory |
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Application publication date: 20150325 |