WO2016201603A1 - 一种掉电告警电路及网络设备 - Google Patents
一种掉电告警电路及网络设备 Download PDFInfo
- Publication number
- WO2016201603A1 WO2016201603A1 PCT/CN2015/081451 CN2015081451W WO2016201603A1 WO 2016201603 A1 WO2016201603 A1 WO 2016201603A1 CN 2015081451 W CN2015081451 W CN 2015081451W WO 2016201603 A1 WO2016201603 A1 WO 2016201603A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power
- alarm circuit
- voltage
- unit
- circuit
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a power failure alarm circuit and a network device.
- optical network devices such as an ONT (Optical Network Terminal) and an ONU (Optical Network Unit) in an optical communication system are required to implement the Dying gasp function.
- ONT Optical Network Terminal
- ONU Optical Network Unit
- the structure of the optical network device capable of realizing the Dying gasp function is as shown in FIG. 1 , and includes a power failure alarm circuit 101 and a core circuit 102 .
- the input power of the power failure alarm circuit 101 is an optical network device power supply, wherein:
- the power failure alarm circuit 101 specifically includes an anti-backflow unit 1011, an energy storage unit 1012, and a detection unit 1013.
- the input power of the power failure alarm circuit 101 passes through the anti-backflow unit 1011 as a core circuit.
- 102 provides an operating voltage Vo, and charges the energy storage unit 1012;
- the energy storage unit 1012 provides the operating voltage Vo to the core circuit 102 until the energy of the energy storage unit 1012 is exhausted;
- the anti-backfill unit 1011 is generally implemented by a diode, and can prevent the energy of the energy storage unit 1012 from flowing to the input power end of the power failure alarm circuit 101.
- the detecting unit 1013 detects the working voltage Vo, and the input power of the power failure alarm circuit 101 is turned off. During the process of providing the operating voltage Vo to the core circuit 102 by the energy storage unit 1012, the operating voltage Vo supplied to the core circuit 102 is gradually decreased as the energy consumption of the energy storage unit 1012 is decreased. When the detecting unit 1013 detects the operating voltage Vo When the voltage is lower than the preset voltage Vp, the remaining energy of the energy storage unit 1012 is limited, and the device is about to be powered down. At this time, the detecting unit 1013 Down the core circuit 102 outputs an alarm signal to trigger circuit 102 sends the core Dying gasp message;
- the core circuit 102 implements a core function of the optical network device, including receiving a power failure alarm circuit
- the Dying gasp message is transmitted by using the remaining energy of the energy storage unit 1012 in the power-down alarm circuit 101.
- the power-down alarm circuit is the key to realize the Dying gasp function of the network equipment in the communication system.
- the volume of the energy storage unit in the power failure alarm circuit is large, resulting in a large volume of the power failure alarm circuit, thereby making some small network devices, such as SFP (Small Form-factor Pluggable, low). Power consumption pluggable)
- Optical network equipment such as ONT cannot implement Dying gasp function.
- the embodiment of the invention provides a power failure alarm circuit and a network device, which are small in size.
- a power failure alarm circuit including an anti-backflow unit, a boosting unit, an energy storage unit, an output control unit, and a detecting unit, wherein:
- the anti-backflow unit is configured to: when the input power of the power-down alarm circuit is turned on, the input power of the power-down alarm circuit supplies the working voltage to the subsequent-stage circuit of the power-down alarm circuit through the anti-backflow unit; When the input power of the alarm circuit is turned off, the anti-backflow unit prevents the energy of the energy storage unit from flowing to the input power terminal of the power failure alarm circuit;
- the step-up unit is configured to perform a step-up process on a voltage of an input power source of the power-down alarm circuit when the input power of the power-down alarm circuit is turned on, and perform high-voltage charging for the energy storage unit;
- the energy storage unit is configured to provide a working voltage for the subsequent circuit of the power failure alarm circuit through the output control unit when the input power of the power failure alarm circuit is turned off;
- the output control unit is configured to perform voltage stabilization processing on an output voltage of the energy storage unit when the input power of the power failure alarm circuit is turned off, and output a stable voltage to a subsequent stage circuit of the power failure alarm circuit;
- the detecting unit is configured to output a power-down alarm signal to the subsequent-stage circuit of the power-down alarm circuit when the input power of the power-down alarm circuit is turned off, to trigger the transmission of the power-down alarm circuit Last words Dying gasp news.
- a filtering unit is further included, The detecting unit filters the power-down alarm signal before outputting the power-down alarm signal to the subsequent-stage circuit of the power-down alarm circuit.
- the detecting unit is specifically configured to determine whether a voltage of an input power source of the power failure alarm circuit is less than a preset Voltage; when it is determined that the voltage of the input power of the power-down alarm circuit is less than the preset voltage, it is determined that the input power of the power-down alarm circuit is turned off.
- the detecting unit is specifically configured to determine whether a voltage of an input power source of the current time power failure alarm circuit is less than The voltage of the input power of the power-down alarm circuit at the last moment; when it is determined that the voltage of the input power of the power-down alarm circuit is lower than the voltage of the input power of the power-down alarm circuit at the current moment, it is determined that the input power of the power-down alarm circuit is turned off. .
- the output control unit does not send a power failure alarm when the input power of the power failure alarm circuit is turned on.
- the output voltage of the circuit of the latter stage of the circuit does not send a power failure alarm when the input power of the power failure alarm circuit is turned on.
- the output control unit comprises a low dropout linear regulator.
- the anti-backflow unit is specifically a MOS tube.
- a network device including the power failure alarm circuit described above.
- the network device is specifically an optical network device.
- the optical network device is specifically an optical network terminal or an optical network unit.
- the energy storage unit in the power-down alarm circuit is charged by using a high-voltage charging method, and the energy storage list can be improved.
- the energy storage density of the element can reduce the volume of the energy storage power supply, thereby reducing the volume of the power failure alarm circuit, so that some small network devices can also implement the Dying gasp function.
- FIG. 1 is a schematic structural diagram of an optical network device in the prior art
- FIG. 2 is a schematic structural diagram of a power failure alarm circuit according to an embodiment of the present invention.
- FIG. 3 is a second schematic structural diagram of a power failure alarm circuit according to an embodiment of the present invention.
- FIG. 4 is a third schematic structural diagram of a power failure alarm circuit according to an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a power failure alarm circuit according to Embodiment 1 of the present invention.
- FIG. 6 is a schematic structural diagram of a power failure alarm circuit according to Embodiment 2 of the present invention.
- the embodiment of the present invention provides a power failure alarm circuit and a network device.
- the following describes the preferred embodiment of the present invention with reference to the accompanying drawings. It should be understood that The preferred embodiments described are merely illustrative of the invention and are not intended to limit the invention. And in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
- the embodiment of the present invention provides a power failure alarm circuit, as shown in FIG. 2, which may include an anti-backflow unit 201, a boosting unit 202, an energy storage unit 203, an output control unit 204, and a detecting unit 205, where:
- the anti-backflow unit 201 is configured to: when the input power of the power-down alarm circuit is turned on, the input power of the power-down alarm circuit supplies the working voltage to the rear-stage circuit of the power-down alarm circuit through the anti-backflow unit 201; the input of the power-down alarm circuit When the power is turned off, the anti-backflow unit 201 prevents the energy of the energy storage unit 203 from flowing to the input power end of the power failure alarm circuit;
- the boosting unit 202 is configured to: when the input power of the power failure alarm circuit is turned on, the power failure alarm circuit The voltage of the input power source is boosted to charge the energy storage unit 203 at a high voltage;
- the energy storage unit 203 is configured to provide an operating voltage to the subsequent circuit of the power failure alarm circuit through the output control unit 204 when the input power of the power failure alarm circuit is turned off;
- the output control unit 204 is configured to perform voltage stabilization processing on the output voltage of the energy storage unit 203 when the input power of the power failure alarm circuit is turned off, and output a stable voltage to the subsequent circuit of the power failure alarm circuit;
- the detecting unit 205 is configured to output a power-down alarm signal to the subsequent-stage circuit of the power-down alarm circuit when the input power of the power-down alarm circuit is turned off, to trigger the subsequent-stage circuit of the power-down alarm circuit to send the dying Dying gasp message.
- the energy storage unit 203 in the power-down alarm circuit is charged by using a high-voltage charging method, and the energy storage density of the energy storage unit 203 is increased, thereby reducing the energy storage power supply 203.
- the volume can further reduce the volume of the power-down alarm circuit, enabling some smaller network devices to implement the Dying gasp function.
- the power-down alarm circuit shown in FIG. 2 may further include a filtering unit 206.
- the filtering unit 206 is configured to output a power-down alarm signal to the subsequent-stage circuit of the power-down alarm circuit at the detecting unit 205.
- the power-down alarm signal is filtered to remove signal glitch, which makes the power-down alarm circuit more stable and reliable.
- the filtering unit 206 can be, but is not limited to, a CPLD (Complex Programmable Logic Device) or an integrated single-channel implementation.
- CPLD Complex Programmable Logic Device
- the anti-backflow unit 201 described above can be implemented by using a diode.
- the anti-backflow unit 201 is implemented by a controllable switching device with a small voltage drop such as a MOS tube, and the power-down alarm circuit can be applied to some application scenarios where the input power supply voltage is small.
- the input power of the SFP ONT power supply that is, the power-down alarm circuit is small, 3.3V.
- the diode is used to implement the anti-backflow unit 201, the diode's conduction voltage drop is about 0.7V.
- the input power of the electric alarm circuit is turned on, the input power of the power-down alarm circuit is only 2.5V provided by the anti-backflow unit 201 for the latter stage of the power-down alarm circuit, which may not meet the power supply requirements of the latter circuit.
- the anti-backflow unit 201 is implemented by using the MOS tube, the conduction voltage drop of the MOS tube is small, and the input power of the power-down alarm circuit can be ensured to pass through the anti-backflow unit 201.
- the operating voltage provided for the latter stage of the power-down alarm circuit satisfies the power supply requirements of the latter stage circuit.
- the anti-backflow unit 201 in the power-down alarm circuit provided by the embodiment of the present invention is only a preferred implementation manner, and is not used to limit the present invention.
- the anti-backflow unit 201 can also be implemented.
- the device, the integrated circuit, and the like functioning as the anti-backflow unit 201 can specifically select a specific implementation manner according to the actual application scenario of the power-down alarm circuit.
- the power-down alarm signal can be used as a control signal of the anti-backflow unit 201 for controlling the anti-backflow unit.
- the on/off state of 201 When the filtering unit 206 does not output the power-down alarm signal, it indicates that the input power of the power-down alarm circuit is turned on, the anti-backflow unit 201 should be in the path state, and the input power of the power-down alarm circuit passes through the anti-backflow unit 201 as the power-down alarm circuit.
- the latter stage circuit provides an operating voltage; when the filtering unit 206 outputs the power-down alarm signal, it indicates that the input power of the power-down alarm circuit is turned off at this time, and the power-down alarm signal triggers the anti-backflow unit 201 to switch from the path state to the open state to prevent The energy of the energy storage unit 203 flows to the input power terminal of the power failure alarm circuit.
- the foregoing boosting unit 202 can be implemented by using a boosting chip in the prior art.
- the power-down alarm signal can also be used as a control signal of the boosting unit 202 for controlling the operating state of the boosting unit 202.
- the filtering unit 206 does not output the power-down alarm signal, it indicates that the input power of the power-down alarm circuit is turned on, the boosting unit 202 should be in the working state, and the voltage of the input power of the power-down alarm circuit is boosted for storage.
- the power unit 203 is charged at a high voltage; when the power-off alarm signal is output by the filtering unit 206, the input power of the power-down alarm circuit is turned off, and the power-down alarm signal triggers the boosting unit 202 to switch from the working state to the off state, and the power-off is not performed.
- the voltage of the input power of the alarm circuit is boosted.
- the boosting unit 202 when the input power of the power-down alarm circuit is turned off, the boosting unit 202 has no input and naturally does not work, so the boosting unit 202 may not require a control signal.
- the energy storage unit 203 can be implemented by using an energy storage device such as a capacitor or a battery.
- the output control unit 204 does not output a voltage to the subsequent stage circuit of the power failure alarm circuit when the input power of the power failure alarm circuit is turned on.
- the power-down alarm signal can be used as a control signal of the output control unit 204 for controlling the output state of the output control unit 204.
- the power-off alarm signal is not output by the filtering unit 206, it indicates that the input power of the power-down alarm circuit is turned on at this time, the output control unit 204 does not output a voltage to the subsequent-stage circuit of the power-down alarm circuit; and the power-down alarm signal is outputted by the filtering unit 206.
- the power-down alarm signal trigger output control unit 204 outputs a stable voltage to the subsequent stage circuit of the power-down alarm circuit.
- the output control unit 204 can be implemented by using a voltage regulator device such as an LDO (Low Dropout Regulator).
- a voltage regulator device such as an LDO (Low Dropout Regulator).
- the foregoing detecting unit 205 can be implemented by using a comparator.
- the detecting unit 205 is specifically configured to determine whether the voltage of the input power of the power-down alarm circuit is less than a preset voltage; when determining that the voltage of the input power of the power-down alarm circuit is less than a preset voltage, Determining that the input power of the power-down alarm circuit is turned off, the detecting unit 205 outputs a power-down alarm signal to the subsequent-stage circuit of the power-down alarm circuit; and determining the power-down alarm when determining that the voltage of the input power of the power-down alarm circuit is not less than the preset voltage The input power of the circuit is turned on, and the detecting unit 205 does not output a power-down alarm signal to the subsequent stage circuit of the power-down alarm circuit.
- the detecting unit 205 is specifically configured to determine whether the voltage of the input power of the current power failure alarm circuit is less than the voltage of the input power of the power failure alarm circuit at the current time; When the voltage of the input power of the electric alarm circuit is less than the voltage of the input power of the power-down alarm circuit at the previous moment, it is determined that the input power of the power-down alarm circuit is turned off, and the detecting unit 205 outputs the power-down alarm signal to the subsequent circuit of the power-down alarm circuit.
- the detecting unit 205 When it is determined that the voltage of the input power of the power-down alarm circuit is less than the voltage of the input power of the power-down alarm circuit at the current moment, it is determined that the input power of the power-down alarm circuit is turned on, and the detecting unit 205 does not go to the power-down alarm circuit.
- the stage circuit outputs a power failure alarm signal.
- the specific implementation of the power-down alarm circuit provided in Embodiment 1 of the present invention is as shown in FIG. 5.
- the circuit structure of the detecting unit 205 can be implemented according to whether the voltage of the input power source of the power-down alarm circuit is less than a preset. Voltage to determine if the input power to the power-down alarm circuit is off.
- the detecting unit 205 when the voltage of the input power of the power-down alarm circuit is not less than the preset voltage, the detecting unit 205 outputs a low-level signal indicating that the input power of the power-down alarm circuit is turned on; when the power supply of the power-down alarm circuit is When the voltage is less than the preset voltage, the detecting unit 205 outputs a high level signal, indicating that the input power of the power failure alarm circuit is turned off; the high level signal is a power failure alarm signal, which is filtered by the filtering unit 206 and output.
- the power-down alarm signal output by the filtering unit 206 is used as a trigger signal for transmitting the Dying gasp message as the back-stage circuit of the power-down alarm circuit, and also as a control signal for the anti-backflow unit 201, the boosting unit 202, and the output control unit 204.
- the power-down alarm signal output by the filtering unit 206 needs to be inverted and input to the MOS tube control end of the anti-backflow unit 201, so that the anti-backflow can be realized.
- the correct logic control of unit 201. Therefore, the signal inversion circuit 500 is provided in FIG. 5 to implement the reverse of the power down alarm signal.
- the signal reversal process can also be implemented in the filtering unit 206, which is not limited by the present invention.
- the input power of the power failure alarm circuit When the input power of the power failure alarm circuit is turned on, the voltage of the input power of the power failure alarm circuit is not less than the preset voltage, and the filtering unit 206 does not output the power failure alarm signal, and the MOS tube in the anti-backflow unit 201 is turned on, and the output control unit
- the MOS transistor in 204 is turned off, the input power of the power-down alarm circuit supplies the operating voltage to the subsequent stage circuit of the power-down alarm circuit, and the high-voltage charging of the capacitor in the energy storage unit 203 is performed by the boosting chip in the boosting unit 202.
- the MOS transistor in the output control unit 204 is turned off, the LDO is unloaded, and the power consumption is low.
- the filtering unit 206 When the input power of the power failure alarm circuit is turned off, the voltage of the input power of the power failure alarm circuit is less than the preset voltage, and the filtering unit 206 outputs a power failure alarm signal, and the subsequent circuit that triggers the power failure alarm circuit sends a Dying gasp message and triggers
- the MOS transistor in the anti-backflow unit 201 is turned off, the MOS transistor in the output control unit 204 is turned on, and the capacitor in the energy storage unit 203 is supplied with a stable operating voltage by the output control unit 204 for the subsequent stage circuit of the power-down alarm circuit until The capacitance energy in the energy storage unit 203 is nearly depleted, and the LDO in the output control unit 204 can no longer perform the regulated output.
- the energy of the energy storage unit 203 is used for sending the Dying gasp message of the subsequent circuit of the power failure alarm circuit, and the energy utilization rate is high; and the power failure alarm circuit provides better stability of the working voltage for the latter circuit. .
- the power-down alarm circuit provided in Embodiment 2 of the present invention is as shown in FIG. 6. Compared with the foregoing Embodiment 1, the difference is only in the circuit structure of the detecting unit 205.
- the circuit structure of the detecting unit 205 in FIG. 6 can be implemented: determining whether the input power of the power-down alarm circuit is turned off according to whether the voltage of the input power source of the power-down alarm circuit at the current time is less than the voltage of the input power source of the power-down alarm circuit of the previous moment. .
- the detecting unit 205 when the voltage of the input power of the current power failure alarm circuit is not less than the voltage of the input power of the power failure alarm circuit at the current time, the detecting unit 205 outputs a low level signal indicating the input power of the power failure alarm circuit.
- the detecting unit 205 When the voltage of the input power of the current power failure alarm circuit is lower than the voltage of the input power of the power failure alarm circuit at the current moment, the detecting unit 205 outputs a high level signal, indicating that the input power of the power failure alarm circuit is turned off;
- the high level signal is the power down alarm signal, which is filtered by the filtering unit 206 and output.
- the detecting unit 205 shown in FIG. 6 can be detected more quickly when the voltage drop of the input power of the power-down warning circuit is turned off.
- the detecting unit 205 directly detects the input power of the power-down alarm circuit to determine whether the input power of the power-down alarm circuit is turned off. In other embodiments of the present invention, the detecting unit 205 also determines whether the input power of the power-down alarm circuit is turned off by detecting other parameters, such as the operating voltage provided by the subsequent stage circuit of the power-down alarm circuit, and the present invention does not Specifically limited.
- the embodiment of the invention further provides a network device, including any of the above-mentioned power failure alarm circuits.
- the network device can be, but is not limited to, an optical network device. Specifically, it may be an ONT, such as an SFP ONT, a mini ONT, or the like, or an ONU.
- ONT such as an SFP ONT, a mini ONT, or the like
- ONU an ONU
- the solution provided by the embodiment of the present invention can enable a network device with a small volume. Realize Dying gasp function.
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
一种掉电告警电路及网络设备，包括防倒灌单元、升压单元、储能单元、输出控制单元和检测单元，其中：升压单元，用于在掉电告警电路的输入电源开启时，对掉电告警电路的输入电源的电压进行升压处理，为储能单元高压充电；储能单元，用于在掉电告警电路的输入电源关闭时，通过输出控制单元为掉电告警电路的后级电路提供工作电压；输出控制单元，用于在掉电告警电路的输入电源关闭时，对储能单元的输出电压进行稳压处理，向掉电告警电路的后级电路输出稳定电压。采用本发明实施例提供的方案，体积较小。
Description
本发明涉及通信技术领域，特别涉及一种掉电告警电路及网络设备。
目前很多的通信系统，都需要系统中的网络设备能够实现Dying gasp(临终遗言)功能，即网络设备在其掉电时能够向其上级设备发送Dying gasp消息。
例如，光通信系统中的ONT(Optical Network Terminal，光网络终端)、ONU(Optical Network Unit，光网络单元)等光网络设备，均需要能够实现Dying gasp功能。现有技术中，能够实现Dying gasp功能的光网络设备的结构如图1所示，包括掉电告警电路101和核心电路102，掉电告警电路101的输入电源即光网络设备供电电源，其中：
掉电告警电路101，具体包括防倒灌单元1011、储能单元1012和检测单元1013；在掉电告警电路101的输入电源开启时，掉电告警电路101的输入电源通过防倒灌单元1011为核心电路102提供工作电压Vo，以及为储能单元1012充电；在掉电告警电路101的输入电源的关闭时，储能单元1012为核心电路102提供工作电压Vo，直至储能单元1012的能量耗尽；防倒灌单元1011，通常采用二极管实现，可以防止储能单元1012的能量流向掉电告警电路101的输入电源端；检测单元1013对工作电压Vo进行检测，在掉电告警电路101的输入电源关闭、由储能单元1012为核心电路102提供工作电压Vo的过程中，随着储能单元1012的能量消耗，为核心电路102提供的工作电压Vo也逐渐减小，当检测单元1013检测到工作电压Vo低于预设电压Vp时，说明储能单元1012的剩余能量有限，设备即将掉电，此时，检测单元1013向核心电路102输出掉电告警信号，以触发核心电路102发送Dying gasp消息；
核心电路102，实现光网络设备的核心功能，包括在接收到掉电告警电路
101中的检测单元1013输出的掉电告警信号时，利用掉电告警电路101中的储能单元1012的剩余能量发送Dying gasp消息。
显然，掉电告警电路是通信系统中的网络设备实现Dying gasp功能的关键。然而，现有技术中，掉电告警电路中储能单元的体积较大，导致掉电告警电路的体积较大，从而使得一些体积较小的网络设备，例如SFP(Small Form-factor Pluggable，低功耗可插拔)ONT等光网络设备无法实现Dying gasp功能。
发明内容
本发明实施例提供一种掉电告警电路及网络设备，体积较小。
第一方面，提供一种掉电告警电路，包括防倒灌单元、升压单元、储能单元、输出控制单元和检测单元，其中：
所述防倒灌单元，用于在掉电告警电路的输入电源开启时，掉电告警电路的输入电源通过所述防倒灌单元为所述掉电告警电路的后级电路提供工作电压；在掉电告警电路的输入电源关闭时，所述防倒灌单元防止所述储能单元的能量流向掉电告警电路的输入电源端；
所述升压单元，用于在掉电告警电路的输入电源开启时，对掉电告警电路的输入电源的电压进行升压处理，为所述储能单元高压充电；
所述储能单元，用于在掉电告警电路的输入电源关闭时，通过所述输出控制单元为所述掉电告警电路的后级电路提供工作电压；
所述输出控制单元，用于在掉电告警电路的输入电源关闭时，对所述储能单元的输出电压进行稳压处理，向所述掉电告警电路的后级电路输出稳定电压；
所述检测单元，用于在确定掉电告警电路的输入电源关闭时，向所述掉电告警电路的后级电路输出掉电告警信号，以触发所述掉电告警电路的后级电路发送临终遗言Dying gasp消息。
结合第一方面，在第一种可能的实现方式中，还包括滤波单元，用于在
所述检测单元向所述掉电告警电路的后级电路输出掉电告警信号之前，对所述掉电告警信号进行滤波处理。
结合第一方面，或者第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述检测单元，具体用于确定掉电告警电路的输入电源的电压是否小于预设电压；在确定掉电告警电路的输入电源的电压小于预设电压时，确定掉电告警电路的输入电源关闭。
结合第一方面，或者第一方面的第一种可能的实现方式，在第三种可能的实现方式中，所述检测单元，具体用于确定当前时刻掉电告警电路的输入电源的电压是否小于上一时刻掉电告警电路的输入电源的电压；在确定当前时刻掉电告警电路的输入电源的电压小于上一时刻掉电告警电路的输入电源的电压时，确定掉电告警电路的输入电源关闭。
结合第一方面，或者第一方面的第一种可能的实现方式，在第四种可能的实现方式中，所述输出控制单元，在掉电告警电路的输入电源开启时，不向掉电告警电路的后级电路输出电压。
结合第一方面的第四种可能的实现方式，在第五种可能的实现方式中，所述输出控制单元包括低压差线性稳压器。
结合第一方面，第一方面的第一种可能的实现方式，第一方面的第二种可能的实现方式，第一方面的第三种可能的实现方式，第一方面的第四种可能的实现方式，或者第一方面的第五种可能的实现方式，在第六种可能的实现方式中，所述防倒灌单元具体为MOS管。
第二方面，提供一种网络设备，包括上述掉电告警电路。
结合第一方面，在第一种可能的实现方式中，所述网络设备具体为光网络设备。
结合第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述光网络设备具体为光网络终端或光网络单元。
根据第一方面提供的掉电告警电路，或者第二方面提供的网络设备，使用高压充电的方法对掉电告警电路中的储能单元进行充电，能够提高储能单
元的储能密度，从而可以减小储能电源的体积，进而可以减小掉电告警电路的体积，使得一些体积较小的网络设备也能够实现Dying gasp功能。
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明实施例一起用于解释本发明，并不构成对本发明的限制。在附图中：
图1为现有技术中光网络设备的结构示意图；
图2为本发明实施例提供的掉电告警电路的结构示意图之一；
图3为本发明实施例提供的掉电告警电路的结构示意图之二；
图4为本发明实施例提供的掉电告警电路的结构示意图之三；
图5为本发明实施例1提供的掉电告警电路的详细结构示意图；
图6为本发明实施例2提供的掉电告警电路的详细结构示意图。
为了给出体积较小的掉电告警电路的实现方案，本发明实施例提供了一种掉电告警电路及网络设备，以下结合说明书附图对本发明的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本发明，并不用于限定本发明。并且在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
本发明实施例提供一种掉电告警电路，如图2所示，可以包括防倒灌单元201、升压单元202、储能单元203、输出控制单元204和检测单元205，其中：
防倒灌单元201，用于在掉电告警电路的输入电源开启时，掉电告警电路的输入电源通过防倒灌单元201为掉电告警电路的后级电路提供工作电压；在掉电告警电路的输入电源关闭时，防倒灌单元201防止储能单元203的能量流向掉电告警电路的输入电源端；
升压单元202，用于在掉电告警电路的输入电源开启时，对掉电告警电路
的输入电源的电压进行升压处理，为储能单元203高压充电；
储能单元203，用于在掉电告警电路的输入电源关闭时，通过输出控制单元204为掉电告警电路的后级电路提供工作电压；
输出控制单元204，用于在掉电告警电路的输入电源关闭时，对储能单元203的输出电压进行稳压处理，向掉电告警电路的后级电路输出稳定电压；
检测单元205，用于在确定掉电告警电路的输入电源关闭时，向掉电告警电路的后级电路输出掉电告警信号，以触发掉电告警电路的后级电路发送临终遗言Dying gasp消息。
即本发明实施例提供的掉电告警电路中，使用高压充电的方法对掉电告警电路中的储能单元203进行充电，提高储能单元203的储能密度，从而可以减小储能电源203的体积，进而可以减小掉电告警电路的体积，使得一些体积较小的网络设备也能够实现Dying gasp功能。
优选的，图2所示的掉电告警电路，还可以包括滤波单元206，如图3所示，滤波单元206，用于在检测单元205向掉电告警电路的后级电路输出掉电告警信号之前，对该掉电告警信号进行滤波处理，去除信号毛刺，使掉电告警电路更稳定可靠。
具体实现时，滤波单元206可以但不限于采用CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)或者集成单路实现。
上述防倒灌单元201可以采用二极管实现。
较佳的，上述防倒灌单元201采用MOS管等导通压降较小的可控开关器件实现，可以使掉电告警电路适用于一些输入电源电压较小的应用场景中。
例如，在SFP ONT中时，SFP ONT的供电电源即掉电告警电路的输入电源较小，为3.3V，若采用二极管实现防倒灌单元201，二极管的导通压降约为0.7V，在掉电告警电路的输入电源开启时，掉电告警电路的输入电源通过防倒灌单元201为掉电告警电路的后级电路提供的工作电压仅为2.5V，很可能不满足后级电路的供电需求。而若采用MOS管实现防倒灌单元201，MOS管的导通压降很小，能够保证掉电告警电路的输入电源通过防倒灌单元201
为掉电告警电路的后级电路提供的工作电压满足后级电路的供电需求。
需要说明的是，采用MOS管实现本发明实施例提供的掉电告警电路中的防倒灌单元201只是一种较佳的实现方式，并不用于限定本发明，防倒灌单元201也可以为能够实现上述防倒灌单元201功能的器件、集成电路等，具体可以根据掉电告警电路的实际应用场景来选择具体的实现方式。
较佳的，当防倒灌单元201采用MOS管等可控开关器件或者可控电路实现时，如图4所示，掉电告警信号可以作为防倒灌单元201的控制信号，用于控制防倒灌单元201的通断状态。在滤波单元206未输出掉电告警信号时，说明此时掉电告警电路的输入电源开启，防倒灌单元201应处于通路状态，掉电告警电路的输入电源通过防倒灌单元201为掉电告警电路的后级电路提供工作电压；在滤波单元206输出掉电告警信号时，说明此时掉电告警电路的输入电源关闭，该掉电告警信号触发防倒灌单元201由通路状态切换至断路状态，防止储能单元203的能量流向掉电告警电路的输入电源端。
具体实现时，上述升压单元202可以但不限于采用现有技术中的升压芯片实现。掉电告警信号也可以作为升压单元202的控制信号，用于控制升压单元202的工作状态。在滤波单元206未输出掉电告警信号时，说明此时掉电告警电路的输入电源开启，升压单元202应处于工作状态，对掉电告警电路的输入电源的电压进行升压处理，为储能单元203高压充电；在滤波单元206输出掉电告警信号时，说明此时掉电告警电路的输入电源关闭，该掉电告警信号触发升压单元202由工作状态切换至关闭状态，不对掉电告警电路的输入电源的电压进行升压处理。
然而，实际上，在掉电告警电路的输入电源关闭时，升压单元202无输入，自然不会工作，所以实质上升压单元202也可以不需要控制信号。
具体实现时，上述储能单元203可以但不限于采用电容、蓄电池等储能器件实现。
进一步的，输出控制单元204，在掉电告警电路的输入电源开启时，不向掉电告警电路的后级电路输出电压。
较佳的，掉电告警信号可以作为输出控制单元204的控制信号，用于控制输出控制单元204的输出状态。在滤波单元206未输出掉电告警信号时，说明此时掉电告警电路的输入电源开启，输出控制单元204不向掉电告警电路的后级电路输出电压；在滤波单元206输出掉电告警信号时，说明此时掉电告警电路的输入电源关闭，该掉电告警信号触发输出控制单元204向掉电告警电路的后级电路输出稳定电压。
具体实现时，上述输出控制单元204可以但不限于采用LDO(Low Dropout Regulator，低压差线性稳压器)等稳压器件实现。
具体实现时，上述检测单元205可以采用比较器实现。
在本发明的一个具体实施例中，检测单元205，具体用于确定掉电告警电路的输入电源的电压是否小于预设电压；在确定掉电告警电路的输入电源的电压小于预设电压时，确定掉电告警电路的输入电源关闭，检测单元205向掉电告警电路的后级电路输出掉电告警信号；在确定掉电告警电路的输入电源的电压不小于预设电压时，确定掉电告警电路的输入电源开启，检测单元205不向掉电告警电路的后级电路输出掉电告警信号。
在本发明的另一个具体实施例中，检测单元205，具体用于确定当前时刻掉电告警电路的输入电源的电压是否小于上一时刻掉电告警电路的输入电源的电压；在确定当前时刻掉电告警电路的输入电源的电压小于上一时刻掉电告警电路的输入电源的电压时，确定掉电告警电路的输入电源关闭，检测单元205向掉电告警电路的后级电路输出掉电告警信号；在确定当前时刻掉电告警电路的输入电源的电压小于上一时刻掉电告警电路的输入电源的电压时，确定掉电告警电路的输入电源开启，检测单元205不向掉电告警电路的后级电路输出掉电告警信号。
下面结合附图，对本发明提供的掉电告警电路的具体实现进行举例说明。
实施例1：
本发明实施例1提供的掉电告警电路的具体实现如图5所示，检测单元205的电路结构可以实现：根据掉电告警电路的输入电源的电压是否小于预设
电压，来确定掉电告警电路的输入电源是否关闭。
图5中，当掉电告警电路的输入电源的电压不小于预设电压时，检测单元205输出一个低电平信号，表示掉电告警电路的输入电源开启；当掉电告警电路的输入电源的电压小于预设电压时，检测单元205输出一个高电平信号，表示掉电告警电路的输入电源关闭；该高电平信号即为掉电告警信号，由滤波单元206滤波后输出。
滤波单元206输出的掉电告警信号不但作为掉电告警电路的后级电路发送Dying gasp消息的触发信号，还作为防倒灌单元201、升压单元202以及输出控制单元204的控制信号。
基于图5中防倒灌单元201和检测单元205的具体实现方式，滤波单元206输出的掉电告警信号需要经过反向后输入到防倒灌单元201中的MOS管控制端，才能够实现对防倒灌单元201的正确逻辑控制。因此，图5中设置了信号反向电路500来实现掉电告警信号的反向。当然，该信号反向过程也可以在滤波单元206中实现，本发明对此不做限定。
在掉电告警电路的输入电源开启时，掉电告警电路的输入电源的电压不小于预设电压，滤波单元206未输出掉电告警信号，防倒灌单元201中的MOS管导通，输出控制单元204中的MOS管关断，掉电告警电路的输入电源为掉电告警电路的后级电路提供工作电压，并通过升压单元202中的升压芯片对储能单元203中的电容进行高压充电。
此时，输出控制单元204中的LDO虽然处于工作状态，但输出控制单元204中的MOS管关断，LDO空载，功耗较低。
在掉电告警电路的输入电源关闭时，掉电告警电路的输入电源的电压小于预设电压，滤波单元206输出掉电告警信号，触发掉电告警电路的后级电路发送Dying gasp消息，并触发防倒灌单元201中的MOS管关断、输出控制单元204中的MOS管导通，储能单元203中的电容通过输出控制单元204为掉电告警电路的后级电路提供稳定的工作电压，直至储能单元203中的电容能量接近耗尽，输出控制单元204中的LDO不能再进行稳压输出为止。
可见，储能单元203的能量均用于掉电告警电路的后级电路Dying gasp消息的发送，能量的利用率较高；并且，掉电告警电路为后级电路提供的工作电压稳定性较好。
实施例2：
本发明实施例2提供的掉电告警电路如图6所示，相比于前述实施例1，差别仅在于检测单元205的电路结构不同。
图6中检测单元205的电路结构可以实现：根据当前时刻掉电告警电路的输入电源的电压是否小于上一时刻掉电告警电路的输入电源的电压，来确定掉电告警电路的输入电源是否关闭。
图6中，当当前时刻掉电告警电路的输入电源的电压不小于上一时刻掉电告警电路的输入电源的电压时，检测单元205输出一个低电平信号，表示掉电告警电路的输入电源开启；当当前时刻掉电告警电路的输入电源的电压小于上一时刻掉电告警电路的输入电源的电压时，检测单元205输出一个高电平信号，表示掉电告警电路的输入电源关闭；该高电平信号即为掉电告警信号，由滤波单元206滤波后输出。
相比于上述是实施例1，采用图6所示的检测单元205，在掉电告警电路的输入电源关闭出现电压跌落时，能够更快得检测到。
掉电告警电路的具体原理类似，在此不再赘述。
需要说明的是，在上述实施例1和实施例2中，检测单元205均是直接对掉电告警电路的输入电源进行检测，来确定掉电告警电路的输入电源是否关闭。在本发明的其它实施例中，检测单元205也通过检测其它参数，例如为掉电告警电路的后级电路提供的工作电压来确定掉电告警电路的输入电源是否关闭，本发明对此不做具体限定。
本发明实施例还提供了一种网络设备，包括上述任一的掉电告警电路。
进一步的，该网络设备可以但不限于为光网络设备。具体的，可以为ONT，如SFP ONT、迷你ONT等，也可以为ONU等。
综上所述，采用本发明实施例提供的方案，能够使体积较小的网络设备
实现Dying gasp功能。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。
Claims (10)
- 一种掉电告警电路，其特征在于，包括防倒灌单元、升压单元、储能单元、输出控制单元和检测单元，其中：所述防倒灌单元，用于在掉电告警电路的输入电源开启时，掉电告警电路的输入电源通过所述防倒灌单元为所述掉电告警电路的后级电路提供工作电压；在掉电告警电路的输入电源关闭时，所述防倒灌单元防止所述储能单元的能量流向掉电告警电路的输入电源端；所述升压单元，用于在掉电告警电路的输入电源开启时，对掉电告警电路的输入电源的电压进行升压处理，为所述储能单元高压充电；所述储能单元，用于在掉电告警电路的输入电源关闭时，通过所述输出控制单元为所述掉电告警电路的后级电路提供工作电压；所述输出控制单元，用于在掉电告警电路的输入电源关闭时，对所述储能单元的输出电压进行稳压处理，向所述掉电告警电路的后级电路输出稳定电压；所述检测单元，用于在确定掉电告警电路的输入电源关闭时，向所述掉电告警电路的后级电路输出掉电告警信号，以触发所述掉电告警电路的后级电路发送临终遗言Dying gasp消息。
- 如权利要求1所述的掉电告警电路，其特征在于，还包括滤波单元，用于在所述检测单元向所述掉电告警电路的后级电路输出掉电告警信号之前，对所述掉电告警信号进行滤波处理。
- 如权利要求1或2所述的掉电告警电路，其特征在于，所述检测单元，具体用于确定掉电告警电路的输入电源的电压是否小于预设电压；在确定掉电告警电路的输入电源的电压小于预设电压时，确定掉电告警电路的输入电源关闭。
- 如权利要求1或2所述的掉电告警电路，其特征在于，所述检测单元，具体用于确定当前时刻掉电告警电路的输入电源的电压是否小于上一时刻掉 电告警电路的输入电源的电压；在确定当前时刻掉电告警电路的输入电源的电压小于上一时刻掉电告警电路的输入电源的电压时，确定掉电告警电路的输入电源关闭。
- 如权利要求1或2所述的掉电告警电路，其特征在于，所述输出控制单元，在掉电告警电路的输入电源开启时，不向掉电告警电路的后级电路输出电压。
- 如权利要求5所述的掉电告警电路，其特征在于，所述输出控制单元包括低压差线性稳压器。
- 如权利要求1-6任一所述的掉电告警电路，其特征在于，所述防倒灌单元具体为MOS管。
- 一种网络设备，其特征在于，包括如权利要求1-5任一所述的掉电告警电路。
- 如权利要求8所述的网络设备，其特征在于，所述网络设备具体为光网络设备。
- 如权利要求9所述的网络设备，其特征在于，所述光网络设备具体为光网络终端或光网络单元。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/081451 WO2016201603A1 (zh) | 2015-06-15 | 2015-06-15 | 一种掉电告警电路及网络设备 |
| CN201580000259.9A CN107005080B (zh) | 2015-06-15 | 2015-06-15 | 一种掉电告警电路及网络设备 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/081451 WO2016201603A1 (zh) | 2015-06-15 | 2015-06-15 | 一种掉电告警电路及网络设备 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016201603A1 true WO2016201603A1 (zh) | 2016-12-22 |
Family
ID=57544638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2015/081451 WO2016201603A1 (zh) | 2015-06-15 | 2015-06-15 | 一种掉电告警电路及网络设备 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107005080B (zh) |
| WO (1) | WO2016201603A1 (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568246A (zh) * | 2019-05-17 | 2019-12-13 | 上海繁易信息科技股份有限公司 | 一种掉电报警电路及报警方法 |
| CN114442785A (zh) * | 2021-12-30 | 2022-05-06 | 苏州浪潮智能科技有限公司 | 一种服务器电源的输出保持时间延长方法和系统 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111130821B (zh) * | 2018-10-30 | 2023-03-31 | 中国移动通信有限公司研究院 | 一种掉电告警的方法、处理方法及装置 |
| CN112531876A (zh) * | 2020-11-26 | 2021-03-19 | 北京锐安科技有限公司 | 一种掉电告警控制电路 |
| CN113899939B (zh) * | 2021-12-10 | 2022-03-29 | 广东省新一代通信与网络创新研究院 | 一种通信设备掉电告警电路、处理方法及通信设备 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111011A (zh) * | 2011-02-28 | 2011-06-29 | 华为技术有限公司 | 一种掉电保持方法及电路 |
| US20110218692A1 (en) * | 2010-03-05 | 2011-09-08 | Hangzhou Silergy Semiconductor Technology LTD | Hybrid controlling and driving circuit and method thereof |
| CN102315637A (zh) * | 2011-04-08 | 2012-01-11 | 安伏（苏州）电子有限公司 | 掉电保持时间的直流电源 |
| CN103580272A (zh) * | 2013-11-15 | 2014-02-12 | 深圳市双赢伟业科技股份有限公司 | 一种电源断电延时电路 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656419U (zh) * | 2010-01-12 | 2010-11-24 | 瑞斯康达科技发展股份有限公司 | 一种网络终端设备掉电告警电路 |
| CN201859392U (zh) * | 2010-11-22 | 2011-06-08 | 吴刚 | 一种防止断电的电脑供电电源 |
| CN102155342B (zh) * | 2011-03-04 | 2012-12-12 | 广州金升阳科技有限公司 | 一种汽车供电电路 |
-
2015
- 2015-06-15 WO PCT/CN2015/081451 patent/WO2016201603A1/zh active Application Filing
- 2015-06-15 CN CN201580000259.9A patent/CN107005080B/zh active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110218692A1 (en) * | 2010-03-05 | 2011-09-08 | Hangzhou Silergy Semiconductor Technology LTD | Hybrid controlling and driving circuit and method thereof |
| CN102111011A (zh) * | 2011-02-28 | 2011-06-29 | 华为技术有限公司 | 一种掉电保持方法及电路 |
| CN102315637A (zh) * | 2011-04-08 | 2012-01-11 | 安伏（苏州）电子有限公司 | 掉电保持时间的直流电源 |
| CN103580272A (zh) * | 2013-11-15 | 2014-02-12 | 深圳市双赢伟业科技股份有限公司 | 一种电源断电延时电路 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568246A (zh) * | 2019-05-17 | 2019-12-13 | 上海繁易信息科技股份有限公司 | 一种掉电报警电路及报警方法 |
| CN110568246B (zh) * | 2019-05-17 | 2021-09-14 | 上海繁易信息科技股份有限公司 | 一种掉电报警电路及报警方法 |
| CN114442785A (zh) * | 2021-12-30 | 2022-05-06 | 苏州浪潮智能科技有限公司 | 一种服务器电源的输出保持时间延长方法和系统 |
| CN114442785B (zh) * | 2021-12-30 | 2023-07-18 | 苏州浪潮智能科技有限公司 | 一种服务器电源的输出保持时间延长方法和系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107005080B (zh) | 2020-10-27 |
| CN107005080A (zh) | 2017-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016201603A1 (zh) | 一种掉电告警电路及网络设备 | |
| TWI727538B (zh) | 用於過電流保護之器件及方法及可攜式電子裝置 | |
| JP6301756B2 (ja) | 過電流検出回路およびそれを利用したホスト、過電流検出方法 | |
| US11545846B2 (en) | Power supplying system and method | |
| US10727544B2 (en) | Uninterruptible power supply and battery activation operation method thereof | |
| JP2021503873A (ja) | Ｎｆｃアンテナの電力取得装置 | |
| US20130043832A1 (en) | Battery status detection method and apparatus for electronic device | |
| US9864130B2 (en) | Power supply system | |
| JP6385310B2 (ja) | バッテリ装置 | |
| US20150270707A1 (en) | Overvoltage Protection Apparatus and Method | |
| CN104122925B (zh) | 一种应用于电源管理单元的内部电源产生电路 | |
| JP6553346B2 (ja) | 過電流検出回路およびそれを利用したｕｓｂ給電装置、電子機器、過電流検出方法 | |
| JP2014067084A (ja) | 電源切替え回路 | |
| CN110718959B (zh) | 备用电源系统 | |
| US20140347015A1 (en) | Power supply avoiding over-discharge of battery modules | |
| JP2011091901A (ja) | バッテリ状態監視回路及びバッテリ装置 | |
| JP2014121169A (ja) | 充放電制御回路及びバッテリ装置 | |
| CN104716704B (zh) | 电池状态监视电路以及电池装置 | |
| CN110912239A (zh) | 一种多口充电设备 | |
| CN109164746A (zh) | 一种下电时序控制电路及电源电路 | |
| TWI554004B (zh) | 電源轉換裝置及其控制方法 | |
| AU2019202248A1 (en) | Power management integrated circuit | |
| EP2909915A2 (en) | Device and method for power disturbance detection | |
| JP6550902B2 (ja) | 電子機器 | |
| JP6617195B2 (ja) | マイクロフォンの互換性 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15895176 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 15895176 Country of ref document: EP Kind code of ref document: A1 |