WO2012106952A1 - Appareil pour commutateur optique bistable visant à obtenir une fonction de monostable - Google Patents

Appareil pour commutateur optique bistable visant à obtenir une fonction de monostable Download PDF

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Publication number
WO2012106952A1
WO2012106952A1 PCT/CN2011/079109 CN2011079109W WO2012106952A1 WO 2012106952 A1 WO2012106952 A1 WO 2012106952A1 CN 2011079109 W CN2011079109 W CN 2011079109W WO 2012106952 A1 WO2012106952 A1 WO 2012106952A1
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WO
WIPO (PCT)
Prior art keywords
signal
unit
optical switch
power supply
circuit unit
Prior art date
Application number
PCT/CN2011/079109
Other languages
English (en)
Chinese (zh)
Inventor
张广胜
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2011/079109 priority Critical patent/WO2012106952A1/fr
Priority to CN201180001909.3A priority patent/CN102369666B/zh
Publication of WO2012106952A1 publication Critical patent/WO2012106952A1/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • H03K17/795—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
    • H03K17/7955—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors using phototransistors

Definitions

  • the present invention relates to the field of communication transmission, and more particularly to a device for implementing a monostable function of a bistable optical switch.
  • a common optical switch is used to implement the network protection switching function.
  • the service is switched to the backup path by controlling the optical switch to ensure normal network service.
  • monostable optical switches There are currently two types of optical switches, monostable optical switches and bistable optical switches.
  • the principle of the monostable optical switch is that when the power supply of the optical switch is cut off, the state of the optical switch is always switched to the default channel, such as the standby channel.
  • the working principle of the bistable optical switch is that when the power supply of the optical switch is cut off, the state of the optical switch stays in the channel before the power is cut off. Relatively speaking, the monostable optical switch is more complicated than the bistable optical switch and has a large power consumption.
  • a monostable type of protection is sometimes required, and sometimes a bistable type of protection is required.
  • Different types of protection methods use unused optical switches.
  • the prior art uses different optical switches to implement different protection types according to different application scenarios. The application scenarios are specifically based on the network status and customer requirements, or the use of a monostable type of optical switch, that is, when the power supply of the optical switch is cut off, the state of the optical switch is always switched to the default channel; or A steady-state type optical switch, that is, when the optical switch power supply is turned off, the state of the optical switch stays in the channel before the power is turned off. How to use the same optical switch to achieve both bistable and monostable functions is a problem that cannot be solved by current technical solutions, which brings a lot of work and cost to network planning and maintenance.
  • the invention provides a device for realizing a monostable function of a bistable optical switch, comprising: a power supply unit, a detection circuit unit, a control unit, a latch, an optical switch driving circuit unit, an energy storage unit and a bistable optical switch .
  • the power supply unit is configured to: buffer and filter the received high voltage power signal, and output a low voltage power signal to the detecting circuit unit, the control unit, the latch, the energy storage unit, and the optical switch driving circuit unit;
  • Detecting circuit unit detecting whether the voltage of the high voltage power signal in the power supply unit is normal, and outputting power to the control unit if the high voltage power signal is lower than the reference voltage set in the detecting circuit unit Pressing the alarm signal; if the high voltage power signal is greater than or equal to the reference voltage set in the detecting circuit unit, outputting a voltage normal signal to the control unit;
  • control unit a voltage alarm signal and a voltage normal signal output according to the detecting circuit unit, and an optical switch switching truth table stored in the control unit, and outputting a control signal and a power state signal;
  • a latch configured to latch the current state of the control signal according to the received control signal and the power state signal, and send the latched control signal to the optical switch driving circuit unit;
  • the energy storage unit is configured to store electrical energy from the power supply unit, and after the power supply unit fails, provide the electrical energy to the optical switch driving circuit unit and the latch;
  • An optical switch driving circuit unit configured to output a driving current signal according to the received latched control signal
  • the bistable optical switch of the embodiment of the invention realizes a monostable function device, and solves the prior art.
  • the optical switch In order to realize the monostable function of the optical switch, the optical switch must be a monostable optical switch, that is, the problem that the bistable optical switch cannot achieve the monostable function, without affecting the transmission of the existing service signal, According to the customer's needs, the monostable function or the bistable function of the optical switch can be changed, so that the existing network can complete different types of protection according to the different needs of the customer service, and meet various network protection applications.
  • FIG. 1 is a schematic diagram of a device for implementing a monostable function of a bistable optical switch according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a power supply unit according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a storage circuit unit according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an energy storage module according to an embodiment of the present invention
  • 6 shows an optical switch switching truth table (1) according to an embodiment of the present invention
  • FIG. 7 shows an optical switch switching truth table (2) according to an embodiment of the present invention
  • FIG. 8 shows an embodiment of the present invention.
  • FIG. 9 shows an optical switch switching truth table (4) according to an embodiment of the present invention.
  • FIG. 1 A schematic diagram of a device for implementing a monostable function of a bistable optical switch according to an embodiment of the present invention is shown in FIG.
  • a device for realizing a monostable function of a bistable optical switch comprising: a power supply unit, a detection circuit unit, a control unit, a latch, an optical switch driving circuit unit, an energy storage unit, and a bistable optical switch.
  • the power supply unit is configured to: buffer and filter the received high voltage power signal, and output a low voltage power signal to the detecting circuit unit, the control unit, the latch, the energy storage unit, and the optical switch driving circuit unit;
  • Detecting circuit unit detecting whether the voltage of the high voltage power signal in the power supply unit is normal, and if the high voltage power signal is lower than the reference voltage set in the detecting circuit unit, outputting a voltage warning signal to the control unit; if the high voltage power source When the signal is greater than or equal to the reference voltage set in the detecting circuit unit, the voltage normal signal is output to the control unit;
  • control unit a voltage alarm signal and a voltage normal signal output according to the detecting circuit unit, and an optical switch switching truth table stored in the control unit, and outputting a control signal and a power state signal;
  • a latch configured to latch the current state of the control signal according to the received control signal and the power state signal, and send the latched control signal to the optical switch driving circuit unit;
  • the energy storage unit is configured to store electrical energy from the power supply unit, and after the power supply unit fails, provide the electrical energy to the optical switch driving circuit unit and the latch;
  • An optical switch driving circuit unit configured to output a driving current signal according to the received latched control signal
  • FIG. 2 is a schematic structural diagram of a power supply unit according to an embodiment of the present invention.
  • the power supply unit may further include a slow start circuit unit and a power conversion module.
  • the slow-start circuit unit is configured to delay and filter the high-voltage power signal received by the power supply unit to generate a delayed high-voltage power signal.
  • a power conversion module configured to convert the delayed high voltage power signal into a low voltage power signal, and then output the low voltage power signal to the detection circuit unit, the control unit, the latch, the energy storage unit, and the light Switch drive circuit unit.
  • the high voltage power supply signal is usually 36 V -72 V, and the low voltage power supply signal is usually 1.8 V -12 V.
  • the high voltage power signal is 48V and the low voltage power signal is 3.3V or 5.0V.
  • the slow-start circuit unit specifically includes a fuse, a MOS module, and a filter module.
  • the MOS module is used to delay the overcurrent protection of the high voltage power supply signal of the fuse output.
  • the MOS module is usually composed of MOS field effect transistors (MOS, Metal-Oxide-Semiconductor, semiconductor metal oxide).
  • the MOS module is equivalent to a delay switch, which delays the slow-start circuit in the MOS module.
  • the filtering module is configured to filter the common mode interference signal and the differential mode interference signal in the high voltage power signal outputted by the MOS module, thereby outputting the delayed high voltage power signal.
  • the high voltage power supply signal is usually 36 V -72 V
  • the low voltage power supply signal is usually 1.8 V -12 V.
  • the power supply unit may further include a combining module.
  • a combining module In practical applications, in order to improve the safety and reliability of the power supply unit, two high-voltage power signals are usually input to the power supply unit.
  • the high-voltage power signal is 48V
  • the combining module is used to combine two high-voltage power signals into one high-voltage power signal and input to the slow-start circuit unit.
  • FIG. 3 is a schematic structural diagram of a detecting circuit unit according to an embodiment of the present invention, which is composed of an operational amplifier, an optocoupler device, and five voltage dividing resistors. Negative input of the operational amplifier The terminal is the input of the reference voltage "V reference”.
  • the voltage divider resistor A connected to the positive input of the operational amplifier is connected to the power supply unit to be tested.
  • the power supply signal in the power supply unit detected by the detection circuit unit is a high voltage power supply signal
  • the voltage applied to the other end of the optocoupler device is usually a low voltage power supply signal.
  • the high voltage power supply signal in the power supply unit is 48V
  • the low voltage power supply signal applied to one end of the optocoupler device near the control unit is 3.3V
  • the reference voltage V is 1.27V, which is added to the operational amplifier and
  • the voltage across the voltage dividing resistor R between the optocoupler devices is 27V.
  • the main function of the optocoupler device is to isolate the high voltage on both sides of the optocoupler device from the low voltage.
  • the high voltage side of the optocoupler device is a circuit connected to the power supply unit, and the low voltage side of the optocoupler device is a circuit connected to the control unit.
  • the detecting circuit unit is configured to detect whether the voltage of the high voltage power signal in the power supply unit is normal, and if the high voltage power signal is lower than the reference voltage set in the detecting circuit unit, output a voltage alarm signal to the control unit; if the high voltage power source When the signal is greater than or equal to the reference voltage set in the detection circuit unit, the voltage normal signal is output to the control unit. If the detecting circuit unit is further used to detect the state of the standby power source, the voltage dividing detecting circuit can be directly added on the basis of the existing circuit structure.
  • the B terminal is used to connect to the backup power source. Comparing the main power supply and the backup power supply with the reference power supply, it can be seen that when the main and standby power supplies are all high, it is normal, if it is low, it is abnormal, indicating that the main power supply or the standby power supply has failed. .
  • the detecting circuit unit in the embodiment of the present invention needs to receive the low voltage power signal provided from the power supply unit as the power required for detecting the circuit operation of the circuit unit itself, and is connected to the power supply unit.
  • the high voltage power signal is used to detect whether the voltage state of the power supply unit is normal.
  • control unit is configured to: according to the voltage alarm signal and the voltage normal signal output by the detecting circuit unit, and the optical switch switching truth table stored in the control unit, and output control Signal and power status signals.
  • the control unit in the present invention can be implemented by using an integrated circuit such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit).
  • the control unit in the embodiment of the present invention is configured to output a control signal and a power state signal according to the voltage alarm signal and the voltage normal signal output by the detecting circuit unit, and the optical switch switching truth table stored in the control unit.
  • various types of optical switch switching truth tables are customized in advance according to the needs of the customer.
  • optical switch switching truth table The contents of the optical switch switching truth table are shown in Fig. 6, Fig. 7, Fig. 8, and Fig. 9. If the customer needs to use the bistable optical switch to achieve the bistable function, that is, when the optical switch power supply is cut off and the state of the optical switch stays in the channel before the power is cut off, the optical switch can be used to switch the truth table ( 1 ) ( Figure 6 ) . It can be seen from the content of the optical switch switching truth table (1) that there are two possibilities for switching the optical switch when the power supply fails, that is, switching to the alternate channel or not switching.
  • the control unit When the control unit receives the voltage normal signal output by the detecting circuit unit, according to the program set by the internal integrated circuit, according to the two switching modes in the optical switch switching true value table (1), the power supply is normal, and the selection is made to determine whether Switch to the alternate channel or not switch.
  • the control unit receives the voltage alarm signal output by the detecting circuit unit, it indicates that the current power supply unit has a power failure, such as power failure, low voltage, large power fluctuation, etc., because the optical switch reverses the truth table ( 1)
  • There are two switching modes when the power supply is faulty According to the procedure set by the internal integrated circuit, it is selected to determine whether to switch to the alternate channel or not to switch, so that the on state of the optical switch and the optical switch before the failure of the power supply unit The conduction state is the same.
  • the optical switch can be used to switch the truth table ( 2 ) ( Figure 7 ) and the optical switch is switched to the truth table (3) (Fig. 8).
  • the optical switch switching truth table ( 2 ) Figure 7
  • the optical switch is switched to the truth table (3) (Fig. 8).
  • the content of the optical switch switching truth table ( 2 ) it can be seen that there is only one possibility that the optical switch is switched when the power supply fails, that is, 0-not switching, staying on the main channel.
  • the content of the optical switch switching truth table (3) that in the event of a power failure, there is only one possibility of switching the optical switch, that is, 1-switching to the standby channel and staying on the alternate channel.
  • the control unit can select the optical switch switching truth table (2) or the optical switch switching true value table (3), and output a control signal to control the latch, thereby controlling the driving current signal of the optical switch driving circuit unit.
  • the optical switch can be switched according to the requirements of the user, so that the optical switch can transmit the service signal to the primary channel or the standby channel required by the user when the power supply unit fails.
  • the detecting circuit unit when the power supply unit fails, such as power failure, low voltage, large power supply fluctuation, etc., the detecting circuit unit is configured to detect the state of the power supply unit in time, and The control unit outputs a voltage alarm signal. When the power supply unit is working normally, a voltage normal signal is output to the control unit. When there are two power supply units, namely the primary power supply and the backup power supply, the detection circuit unit can also detect the state of the backup power supply. Compare the primary and backup power supplies to the reference power supply. Accordingly, the optical switch switching truth table stored in the control unit can also be changed accordingly to the optical switch switching truth table (4) described in FIG.
  • the content of the "switching of the optical switch" in the optical switch switching truth table (4) can be modified accordingly to meet the customer's requirements.
  • a bistable optical switch is required to achieve a monostable function or a bistable function.
  • a latch is configured to receive a control signal and a power state signal, latch the control signal of a current state, and send the latched control signal to an optical switch Drive circuit unit.
  • a latch is a pulse-level sensitive memory cell circuit that changes state at a particular input pulse level. Latching is to temporarily store the signal to maintain a certain level. The primary function of the latch is to buffer, and only when there is a latch signal, the state of the input control signal is saved to the output until the next latch signal. Usually there are only two values of 0 and 1.
  • a typical logic circuit is a D flip-flop. Embodiments of the invention do not limit the type of particular latch.
  • the latch When the latch receives the power state signal, the latch sends a control signal sent by the control unit to the optical switch driving circuit unit; when the power state signal is not received, the latch latches the current state control signal And transmitting the latched current state control signal to the optical switch driving circuit unit.
  • the optical switch driving circuit unit is configured to output a driving current signal according to the received latched control signal.
  • the optical switch driving circuit unit may be constituted by an integrated circuit or a circuit composed of a triode, and its working principle is to output a driving current signal to the bistable optical switch according to the latched control signal sent by the received latch.
  • the drive current signal can be divided into a forward current and a reverse current.
  • An energy storage unit for storing electrical energy from the power supply unit and supplying the electrical energy to the optical switch drive circuit unit and the latch after the power supply unit fails.
  • the energy storage unit can be a capacitor or other device that can store electrical energy, such as a battery. In actual use, the capacity of the energy storage unit can be selected according to the requirements. Further, since the power supply system has a maximum capacitive load limitation, in the embodiment of the present invention, as shown in the structural diagram of the energy storage module shown in FIG. 5, the energy storage unit is divided into a plurality of small energy storage modules, and Several small energy storage modules are connected in parallel.
  • the small triangle symbol in the figure is the ground terminal, and the other end of the capacitor is the forward power input terminal.
  • the power supply unit separately charges the small energy storage module to prevent the power supply system from being damaged at the same time or causing the power supply system to be abnormal.
  • a switch circuit module is added in front of the energy storage unit, for example, a MOS module is slowly activated.
  • the switch circuit module in front of the energy storage unit is turned off by the control of the control unit, so that the electric energy stored in the energy storage unit is only supplied to the optical switch drive circuit unit and the latch, so as to complete the light with minimum electric energy. Switch switching, at the same time, avoiding energy storage The energy stored in the unit is reversed, resulting in wasted power.
  • a bistable optical switch is configured to switch the primary channel and the alternate channel according to the driving current signal.
  • the coil in the bistable optical switch generates a suction force in different directions according to the direction of the driving current signal, thereby switching the service signal flowing through the optical switch to the primary channel or the alternate channel. Therefore, in the present invention, by using the detecting circuit unit, the control unit, the latch, and the optical switch driving circuit unit, the bistable optical switch of the embodiment of the invention realizes a monostable function device, and solves the prior art.
  • the optical switch In order to realize the monostable function of the optical switch, the optical switch must be a monostable optical switch, that is, the problem that the bistable optical switch cannot achieve the monostable function, without affecting the transmission of the existing service signal, According to the customer's needs, the monostable function or the bistable function of the optical switch can be changed, so that the existing network can complete different types of protection according to the different needs of the customer service, and meet various network protection applications.

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  • Optical Communication System (AREA)

Abstract

La présente invention porte sur un appareil destiné à un commutateur optique bistable visant à obtenir une fonction monostable, comprenant une unité d'alimentation électrique, une unité de circuit de détection, une unité de commande, un verrou, une unité de circuit de commande de commutateur optique, une unité de stockage d'énergie et un commutateur optique bistable. La présente invention résout le problème de l'état antérieur de la technique selon lequel des commutateurs bistables ne peuvent pas mettre en œuvre une fonction de commutation monostable, permettant aux réseaux actuels de réaliser divers types de protection selon différentes exigences d'opérations clients et s'adaptant à diverses applications de protection de réseau.
PCT/CN2011/079109 2011-08-30 2011-08-30 Appareil pour commutateur optique bistable visant à obtenir une fonction de monostable WO2012106952A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2011/079109 WO2012106952A1 (fr) 2011-08-30 2011-08-30 Appareil pour commutateur optique bistable visant à obtenir une fonction de monostable
CN201180001909.3A CN102369666B (zh) 2011-08-30 2011-08-30 一种双稳态光开关实现单稳态功能的装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/079109 WO2012106952A1 (fr) 2011-08-30 2011-08-30 Appareil pour commutateur optique bistable visant à obtenir une fonction de monostable

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WO2012106952A1 true WO2012106952A1 (fr) 2012-08-16

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WO (1) WO2012106952A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117938184B (zh) * 2024-03-21 2024-06-04 华南理工大学 一种基于双稳态锁存器及定时控制的无线携能接收装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070081822A1 (en) * 2005-10-06 2007-04-12 Technology Thesaurus Corp. Optical telecommunication system with automatic channel switching
CN101212254A (zh) * 2006-12-27 2008-07-02 华为技术有限公司 一种光源链路传输装置和方法
CN101527598A (zh) * 2009-03-19 2009-09-09 赵龙林 一种基于光传输设备故障或断电时的传输方法
CN102075212A (zh) * 2010-12-22 2011-05-25 桂林光隆金宇光能科技有限公司 光路系统的旁路保护方法和旁路保护设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070081822A1 (en) * 2005-10-06 2007-04-12 Technology Thesaurus Corp. Optical telecommunication system with automatic channel switching
CN101212254A (zh) * 2006-12-27 2008-07-02 华为技术有限公司 一种光源链路传输装置和方法
CN101527598A (zh) * 2009-03-19 2009-09-09 赵龙林 一种基于光传输设备故障或断电时的传输方法
CN102075212A (zh) * 2010-12-22 2011-05-25 桂林光隆金宇光能科技有限公司 光路系统的旁路保护方法和旁路保护设备

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CN102369666A (zh) 2012-03-07

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