CN201656419U - Power failure warning circuit of network terminal equipment - Google Patents
Power failure warning circuit of network terminal equipment Download PDFInfo
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- CN201656419U CN201656419U CN2010200468184U CN201020046818U CN201656419U CN 201656419 U CN201656419 U CN 201656419U CN 2010200468184 U CN2010200468184 U CN 2010200468184U CN 201020046818 U CN201020046818 U CN 201020046818U CN 201656419 U CN201656419 U CN 201656419U
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Abstract
The utility model discloses a power failure warning circuit of network terminal equipment, which is used for realizing the warning effect on external network management equipment when the external power supply end of the network terminal equipment has the power failure. The warning circuit comprises a voltage monitoring module and a DC/DC voltage conversion module, wherein the input end of the voltage monitoring module is connected with the external input end, in addition, the input end of the voltage monitoring module sends warning signals to the external network management equipment when the voltage of the external input end is lower than the preset value, and the DC/DC voltage conversion module is connected in series between the external input end and the input end of the network terminal equipment, and converts the input voltage in the preset range of the external input end into the input end voltage of the network terminal equipment. The utility model has the advantages that when the network terminal equipment has the power failure, the shorter voltage stabilizing time can be provided for maintaining the normal work of the network equipment, in addition, the circuit is simple and has stable work, and in addition, the range of the external input voltage valve is wider.
Description
Technical field
The utility model relates to a kind of warning circuit, relates to a kind of network-termination device power fail warning circuit especially, belongs to electronic technology field.
Background technology
Along with the continuous development of communication network network management technology, local side apparatus is the operating state of monitoring terminal equipment in real time, in time finds the fault of terminal equipment, thereby improves network communication quality.This can report operating state to local side apparatus in real time with regard to the inevitable requirement terminal equipment, even requires the moment of terminal equipment after outage (generally be several milliseconds to a few tens of milliseconds) to send the message (Dying Gasp function) of a terminal equipment power down to local side apparatus.Require thus: terminal equipment can adopt certain means to keep a bit of time of work again after outage.
For addressing the above problem, continue to keep the technical scheme of terminal equipment work a period of time after having proposed in the prior art to utilize energy-storage travelling wave tube to realize cutting off the power supply, for example, Granted publication day is on May 21st, 2008, Granted publication number to disclose a kind of alarm for power-off accumulator for CN201063461Y, denomination of invention for the utility model patent of " alarm for power-off accumulator ", described alarm for power-off accumulator comprises: charge circuit, the resistance and the storage capacitor that comprise series connection are used for when power supply electrifying storage capacitor being charged; Discharge loop comprises diode in series and storage capacitor, and being used for provides the alarm for power-off function required power supply by storage capacitor for equipment when power cut-off.
Though technical scheme by above-mentioned utility model proposition, can realize following purpose by simple circuit with lower cost: during power supply electrifying, the power supply adaptor overcurrent protection of avoiding surge current to cause, during power cut-off, realize Dying Gasp function; But foregoing circuit is conditional for external input voltage Vin, and it should be greater than the needed operating voltage Vout of terminal equipment, so the application scenario has been subjected to very big restriction.
The utility model content
The technical problems to be solved in the utility model provides a kind of network-termination device power fail warning circuit, and this circuit can limit the power fail warning of realizing network-termination device under the less situation to outside input voltage range.
For addressing the above problem, the utility model provides a kind of network-termination device power fail warning circuit, be used for network-termination device externally during the input power supply power-fail to outside Network Management Equipment alarm, it is characterized in that, described warning circuit comprises: voltage monitoring module and DC/DC voltage transformation module, wherein:
Described voltage monitoring module input is connected with described external input terminals, and when described external input terminals voltage is lower than predetermined value, sends alarm signal to outside Network Management Equipment;
Described DC/DC voltage transformation module is connected between the input of described external input terminals and described network-termination device, and the input voltage of described external input terminals presetting range is converted to the input terminal voltage of described network-termination device.
Further, described circuit also comprises: diode, described diode are arranged between described external input terminals and the described DC/DC voltage transformation module.
Further, described circuit also comprises: electric capacity, described electric capacity are arranged between the public ground of described external input terminals and described circuit.
Further, described DC/DC voltage transformation module comprises further:
A DC/DC voltage conversion unit that is connected in series successively and the 2nd DC/DC voltage conversion unit, a described DC/DC voltage conversion unit is converted to first voltage with the input voltage of described external input terminals presetting range, the input terminal voltage that described the 2nd DC/DC voltage conversion unit is described network-termination device with described first voltage transitions.
Again further, a described DC/DC voltage conversion unit is the booster voltage converter, and described the 2nd DC/DC voltage conversion unit is a decompression voltage changer.
Again further, described circuit also comprises: diode, described diode forward are arranged between a described DC/DC voltage conversion unit and the 2nd DC/DC voltage conversion unit.
Again more further, described circuit also comprises: electric capacity, described electric capacity are arranged between the public ground of diode output and described circuit.
Compared with prior art, the utlity model has following remarkable advantage: when the network-termination device power down, can provide short voltage stabilizing time to keep network equipment operate as normal, provide short buffer time for alarm signal reports Network Management Equipment, thereby can realize the purpose of network appliance power-down alarm report; And this circuit is not only simple, working stability, and wider range of external input voltage value, and the application scenario restriction is little.
Description of drawings
Fig. 1 is the schematic diagram of a kind of network-termination device power fail warning circuit of the utility model embodiment one;
Fig. 2 is the schematic diagram of the another kind of network-termination device power fail warning circuit of the utility model embodiment two.
Embodiment
A kind of network-termination device power fail warning circuit, be used for network-termination device externally during the input power supply power-fail to outside Network Management Equipment alarm, described warning circuit comprises: voltage monitoring module and DC/DC voltage transformation module, wherein:
Described voltage monitoring module input is connected with described external input terminals, and when described external input terminals voltage is lower than predetermined value, sends alarm signal to outside Network Management Equipment;
Described DC/DC voltage transformation module is connected between the input of described external input terminals and described network-termination device, and the input voltage of described external input terminals presetting range is converted to the input terminal voltage of described network-termination device.
Below in conjunction with the drawings and specific embodiments the utility model is done to introduce further, but not as to qualification of the present utility model.
Embodiment one:
As shown in Figure 1, a kind of network-termination device power fail warning circuit comprises: diode D1, capacitor C 1, DC/DC voltage transformation module and voltage monitoring module, and wherein: Vin is the external input voltage of this circuit; Vout is the output voltage of this circuit, and its operating voltage as network-termination device makes it can operate as normal; Diode D1 is arranged between described external input terminals and the described DC/DC voltage transformation module, prevented issuable in the circuit, irritate the electric current of external input terminals is counter; Capacitor C 1 is arranged between the public ground of described external input terminals and described circuit, is used for energy storage, and externally provides energy to the outside during input power source abnormality; The DC/DC voltage transformation module is exported the voltage that the input voltage that receives is converted to predetermined value, as the normal working voltage of network-termination device; The voltage monitoring module provides the power fail warning signal to outside Network Management Equipment when monitoring external input voltage reduction (that is, the externally fed power supply power-fail of network-termination device).
In described Fig. 1, when the externally fed of network-termination device normal, that is: when Vin is normal external input voltage, it is by the normal working voltage Vout of diode D1, DC/DC voltage transformation module output network terminal equipment, at this moment, external input voltage Vin charges to capacitor C 1 by diode D1 simultaneously; And since the voltage monitoring module not monitor external input voltage Vin unusual, it does not externally send any alarm signal; After the external power source outage, external input voltage Vin descends, this moment, the voltage monitoring module monitors was unusual to external input voltage Vin, send the power fail warning signal to outside Network Management Equipment immediately, inform extranets tube apparatus externally fed unit exception, because external input voltage Vin need pass through diode D1, DC/DC step-down modular converter ability output network equipment work voltage Vout, and the DC/DC voltage transformation module has the input range of a broad usually to input voltage, only drop to the lower limit that allows input value when following at its input voltage, its output just can not be satisfied the operating voltage requirement of network-termination device, simultaneously, also because the existence of storage capacitor C1, it also can provide power supply in short-term additional for network-termination device at this moment, obviously as seen, can provide short voltage stabilizing time to keep network equipment operate as normal by such scheme, this obviously can provide short buffer time for alarm signal reports Network Management Equipment, thereby can realize the purpose of network appliance power-down alarm report.
For what the foregoing description one needed explanation a bit be: DC/DC voltage transformation module mentioned in the foregoing description can select DC/DC conversion chip of the prior art or circuit to realize according to the needs of practical application, the voltage monitoring module can realize by voltage sampling circuit of the prior art, not repeat them here.
Embodiment two:
As shown in Figure 2, the schematic diagram for another kind of network-termination device power fail warning circuit comprises: DC/DC voltage transformation module and voltage monitoring module, and wherein: Vin is the external input voltage of this circuit; Vout is the output voltage of this circuit, and its operating voltage as network-termination device makes it can operate as normal; The DC/DC voltage transformation module is converted to the input voltage that receives the voltage output of predetermined value, normal working voltage as network-termination device, described DC/DC voltage transformation module comprises further: a DC/DC voltage conversion unit and the 2nd DC/DC voltage conversion unit, a described DC/DC voltage conversion unit and the 2nd DC/DC voltage conversion unit are connected in series, wherein, a described DC/DC voltage conversion unit is connected with external input terminals, the input voltage of described external input terminals presetting range is converted to first voltage, described the 2nd DC/DC voltage conversion unit is connected with the input of described network-termination device, with described first voltage transitions input terminal voltage that is described network-termination device; Preferably, a DC/DC voltage conversion unit is the booster voltage converter, and the 2nd DC/DC voltage conversion unit is a decompression voltage changer; At this moment, the scope of external input voltage value can broad, can be higher than, be equal to or less than the operational voltage value of the network equipment that is:; The voltage monitoring module provides the power fail warning signal to outside Network Management Equipment when monitoring external input voltage reduction (that is, the externally fed power supply power-fail of network-termination device).
And, be provided with diode D2 and capacitor C 2 further in order to make the foregoing circuit steady operation.Wherein, described diode D2 forward is arranged between a DC/DC voltage conversion unit and the 2nd DC/DC voltage conversion unit, has prevented from that issuable electric current is counter in the circuit to irritate; Capacitor C 2 is arranged between the public ground of diode output and described circuit.
Utilize the network-termination device power fail warning circuit among this embodiment two, circuit in embodiment one has following obvious advantage: it can provide longer time of reception for the power fail warning of network-termination device, and wideer for the scope of external input voltage.Especially, this embodiment externally has more practicality under input voltage value and the application scenarios that the input terminal voltage value of network-termination device equates.For example, when the input terminal voltage value of external input voltage value and network-termination device is 5V, utilize the method for prior art to be difficult to provide enough time of fire alarming for the network appliance power-down warning, and the circuit that utilizes present embodiment to provide can not only realize normal operating conditions by the mode of step-down again that external input voltage is boosted earlier the time to the power supply of network-termination device, and make network-termination device when power down, still can keep a period of time work, to guarantee accurately reporting of power fail warning signal.
For what the foregoing description two needed explanation a bit be: a DC/DC voltage conversion unit and the 2nd DC/DC voltage conversion unit mentioned in the foregoing description also can select suitable DC/DC conversion chip of the prior art or circuit to realize respectively according to the needs of practical application, the voltage monitoring module can realize by voltage sampling circuit of the prior art, also repeat no more at this.
Should be understood that; concerning the those of ordinary skill in field, the utility model technology place; can be equal to change or replacement accordingly according to the technical solution of the utility model and design thereof; and all these changes or replacement all should belong to the protection range of the utility model claims.
Claims (7)
1. network-termination device power fail warning circuit, be used for network-termination device externally during the input power supply power-fail to outside Network Management Equipment alarm, it is characterized in that described warning circuit comprises: voltage monitoring module and DC/DC voltage transformation module, wherein:
Described voltage monitoring module input is connected with described external input terminals, and when described external input terminals voltage is lower than predetermined value, sends alarm signal to outside Network Management Equipment;
Described DC/DC voltage transformation module is connected between the input of described external input terminals and described network-termination device, and the input voltage of described external input terminals presetting range is converted to the input terminal voltage of described network-termination device.
2. network-termination device power fail warning circuit as claimed in claim 1 is characterized in that described circuit also comprises: diode, described diode are arranged between described external input terminals and the described DC/DC voltage transformation module.
3. network-termination device power fail warning circuit as claimed in claim 1 is characterized in that described circuit also comprises: electric capacity, described electric capacity are arranged between the public ground of described external input terminals and described circuit.
4. network-termination device power fail warning circuit as claimed in claim 1 is characterized in that, described DC/DC voltage transformation module comprises further:
A DC/DC voltage conversion unit that is connected in series successively and the 2nd DC/DC voltage conversion unit, a described DC/DC voltage conversion unit is converted to first voltage with the input voltage of described external input terminals presetting range, the input terminal voltage that described the 2nd DC/DC voltage conversion unit is described network-termination device with described first voltage transitions.
5. network-termination device power fail warning circuit as claimed in claim 4 is characterized in that, a described DC/DC voltage conversion unit is the booster voltage converter, and described the 2nd DC/DC voltage conversion unit is a decompression voltage changer.
6. network-termination device power fail warning circuit as claimed in claim 4 is characterized in that described circuit also comprises: diode, described diode forward are arranged between a described DC/DC voltage conversion unit and the 2nd DC/DC voltage conversion unit.
7. network-termination device power fail warning circuit as claimed in claim 6 is characterized in that described circuit also comprises: electric capacity, described electric capacity are arranged between the public ground of diode output and described circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200468184U CN201656419U (en) | 2010-01-12 | 2010-01-12 | Power failure warning circuit of network terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200468184U CN201656419U (en) | 2010-01-12 | 2010-01-12 | Power failure warning circuit of network terminal equipment |
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| Publication Number | Publication Date |
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| CN201656419U true CN201656419U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010200468184U Expired - Lifetime CN201656419U (en) | 2010-01-12 | 2010-01-12 | Power failure warning circuit of network terminal equipment |
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| CN (1) | CN201656419U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024448A (en) * | 2014-04-23 | 2015-11-04 | 北京视联动力国际信息技术有限公司 | Power supply power-down processing circuit and network terminal |
| CN106849334A (en) * | 2017-03-10 | 2017-06-13 | 深圳市共进电子股份有限公司 | Source Current Control system |
| CN107005080A (en) * | 2015-06-15 | 2017-08-01 | 华为技术有限公司 | A kind of power failure warning circuit and the network equipment |
| CN107402520A (en) * | 2016-05-18 | 2017-11-28 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance and its power down control method, start control method |
| CN109245208A (en) * | 2018-09-21 | 2019-01-18 | 郑州云海信息技术有限公司 | A kind of charging/discharging thereof and system of storage capacitor |
| CN111722001A (en) * | 2019-03-18 | 2020-09-29 | 厦门雅迅网络股份有限公司 | Vehicle-mounted terminal power failure detection circuit and method |
| CN111865273A (en) * | 2020-07-29 | 2020-10-30 | Oppo广东移动通信有限公司 | Power failure reminding circuit and CPE (customer premise Equipment) |
| CN113899939A (en) * | 2021-12-10 | 2022-01-07 | 广东省新一代通信与网络创新研究院 | Power failure warning circuit and processing method for communication equipment and communication equipment |
-
2010
- 2010-01-12 CN CN2010200468184U patent/CN201656419U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024448A (en) * | 2014-04-23 | 2015-11-04 | 北京视联动力国际信息技术有限公司 | Power supply power-down processing circuit and network terminal |
| CN105024448B (en) * | 2014-04-23 | 2017-07-28 | 北京视联动力国际信息技术有限公司 | A kind of power supply power down process circuit and a kind of network terminal |
| CN107005080A (en) * | 2015-06-15 | 2017-08-01 | 华为技术有限公司 | A kind of power failure warning circuit and the network equipment |
| CN107005080B (en) * | 2015-06-15 | 2020-10-27 | 华为技术有限公司 | Power failure warning circuit and network equipment |
| CN107402520A (en) * | 2016-05-18 | 2017-11-28 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance and its power down control method, start control method |
| CN106849334A (en) * | 2017-03-10 | 2017-06-13 | 深圳市共进电子股份有限公司 | Source Current Control system |
| CN109245208A (en) * | 2018-09-21 | 2019-01-18 | 郑州云海信息技术有限公司 | A kind of charging/discharging thereof and system of storage capacitor |
| CN111722001A (en) * | 2019-03-18 | 2020-09-29 | 厦门雅迅网络股份有限公司 | Vehicle-mounted terminal power failure detection circuit and method |
| CN111722001B (en) * | 2019-03-18 | 2023-10-24 | 厦门雅迅网络股份有限公司 | Circuit and method for detecting power failure of vehicle-mounted terminal |
| CN111865273A (en) * | 2020-07-29 | 2020-10-30 | Oppo广东移动通信有限公司 | Power failure reminding circuit and CPE (customer premise Equipment) |
| CN113899939A (en) * | 2021-12-10 | 2022-01-07 | 广东省新一代通信与网络创新研究院 | Power failure warning circuit and processing method for communication equipment and communication equipment |
| CN113899939B (en) * | 2021-12-10 | 2022-03-29 | 广东省新一代通信与网络创新研究院 | Power failure warning circuit and processing method for communication equipment and communication equipment |
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Granted publication date: 20101124 |
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