WO2012106952A1 - 一种双稳态光开关实现单稳态功能的装置 - Google Patents
一种双稳态光开关实现单稳态功能的装置 Download PDFInfo
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- 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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- 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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Description
一种双稳态光开关实现单稳态功能的装置 技术领域
本发明涉及通信传输领域，尤其涉及一种双稳态光开关实现单稳态功能的 装置。
背景技术
在光通信领域中， 常用光开关来实现网络保护倒换功能。 当主路径发生异 常时， 通过控制光开关， 将业务切换到备路径， 从而确保网络业务正常使用。 目前光开关有两种类型， 单稳态光开关和双稳态光开关。单稳态光开关工作原 理是， 当光开关的供电电源切断后， 光开关的状态始终倒换到默认通道， 比如 备通道。 双稳态光开关工作原理是， 当光开关供电电源切断后， 光开关的状态 停留在断电前的通道。 相对来说， 单稳态光开关比双稳态光开关原理复杂， 功 耗大。
在网络保护中，有时需要单稳态类型的保护方式，有时需要双稳态类型 的保护方式， 不同类型的保护方式选用不用的光开关。现有技术为根据不同的 应用场景， 选用不同的光开关实现不同的保护类型。 不同的应用场景具体为， 运营商根据网络状态及客户需求， 或使用单稳态类型的光开关， 即， 当光开关 的供电电源切断后， 光开关的状态始终倒换到默认通道； 或使用双稳态类型的 光开关， 即， 当光开关供电电源切断后， 光开关的状态停留在断电前的通道。 如何用同一个光开关既能实现双稳态功能又能实现单稳态功能，是当前技术方 案不能解决的问题， 从而给网络规划和维护等方面的带来了很多工作和成本。
发明内容
本发明提供了一种双稳态光开关实现单稳态功能的装置， 包括， 供电单元、 检测电路单元、 控制单元、 锁存器、 光开关驱动电路单元、 储 能单元和双稳态光开关。
供电单元： 用于将接收到的高电压电源信号进行緩启和过滤，输出低电压 电源信号给所述检测电路单元、 控制单元、 锁存器、 储能单元和光开关驱动 电路单元；
检测电路单元： 用于检测供电单元中的高电压电源信号的电压是否正常， 若高电压电源信号低于检测电路单元中设定的基准电压，则向控制单元输出电
压告警信号； 若高电压电源信号大于等于检测电路单元中设定的基准电压， 则 向控制单元输出电压正常信号；
控制单元：用于根据所述检测电路单元输出的电压告警信号和电压正常信 号， 以及存储于所述控制单元的光开关倒换真值表，输出控制信号和电源状态 信号；
锁存器： 用于根据接收到的控制信号和电源状态信号，锁存当前状态的所 述控制信号， 并将所述锁存的控制信号发送给光开关驱动电路单元；
储能单元： 用于存储来自供电单元的电能， 并在供电单元出现故障后， 向 光开关驱动电路单元和锁存器提供所述电能；
光开关驱动电路单元： 用于根据接收到的锁存的控制信号，输出驱动电流 信号；
双稳态光开关： 用于根据所述驱动电流信号， 倒换主用通道和备用通道。 由此可见， 在本发明中， 通过使用检测电路单元、 控制单元、 锁存器和光 开关驱动电路单元， 本发明实施例的双稳态光开关实现单稳态功能的装置，解 决了现有技术要想实现光开关的单稳态的功能， 光开关必须为单稳态的光开 关， 即双稳态光开关不能实现单稳态功能的问题， 在不影响现有业务信号传输 的情况下， 可根据客户的需求， 改变光开关的单稳态的功能或双稳态的功能， 从而使得现有网络可根据客户业务的不同需求， 完成不同类型的保护， 满足多 种网络保护的应用。 附图说明
此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 并不构成对本发明的限定。 在附图中： 图 1 示出了本发明实施例的一种双稳态光开关实现单稳态功能的装置示 意图； 图 2示示出了本发明实施例的供电单元的结构示意图； 图 3示出了本发明实施例的检测电路单元结构示意图； 图 4示出了本发明实施例的检测电路单元的另一结构示意图； 图 5示出了本发明实施例的储能模块的结构示意图；
图 6示出了本发明实施例的光开关倒换真值表（ 1 ); 图 7示出了本发明实施例的光开关倒换真值表（2 ); 图 8示出了本发明实施例的光开关倒换真值表（3 ); 图 9示出了本发明实施例的光开关倒换真值表（4 )。 具体实施方式
为了便于本领域一般技术人员理解和实现本发明，现结合附图描绘本发明 的实施例。 在此， 本发明的示意性实施例及其说明用于解释本发明， 但并不作 为对本发明的限定。
本发明实施例的一种双稳态光开关实现单稳态功能的装置示意图如图 1 所示。 一种双稳态光开关实现单稳态功能的装置， 包括： 供电单元、 检测电路 单元、 控制单元、 锁存器、 光开关驱动电路单元、 储能单元和双稳态光开关。
供电单元： 用于将接收到的高电压电源信号进行緩启和过滤，输出低电压 电源信号给所述检测电路单元、 控制单元、 锁存器、 储能单元和光开关驱动 电路单元；
检测电路单元： 用于检测供电单元中的高电压电源信号的电压是否正常， 若高电压电源信号低于检测电路单元中设定的基准电压，则向控制单元输出电 压告警信号； 若高电压电源信号大于等于检测电路单元中设定的基准电压， 则 向控制单元输出电压正常信号；
控制单元：用于根据所述检测电路单元输出的电压告警信号和电压正常信 号， 以及存储于所述控制单元的光开关倒换真值表，输出控制信号和电源状态 信号；
锁存器： 用于根据接收到的控制信号和电源状态信号，锁存当前状态的所 述控制信号， 并将所述锁存的控制信号发送给光开关驱动电路单元；
储能单元： 用于存储来自供电单元的电能， 并在供电单元出现故障后， 向 光开关驱动电路单元和锁存器提供所述电能；
光开关驱动电路单元： 用于根据接收到的锁存的控制信号，输出驱动电流 信号；
双稳态光开关： 用于根据所述驱动电流信号， 倒换主用通道和备用通道。
进一步地， 在本发明的另一实施例中， 图 2示出了本发明实施例的供电单 元的结构示意图。 供电单元可进一步包括， 緩启电路单元和电源转换模块。 緩 启电路单元， 用于对供电单元接收到的高电压电源信号进行延緩和过滤，产生 延緩后的高电压电源信号。 电源转换模块， 用于将所述延緩后的高电压电源信 号转换为低电压电源信号，然后将所述低电压电源信号输出给所述检测电路单 元、 控制单元、 锁存器、 储能单元和光开关驱动电路单元。 一般地， 在光开关 控制领域中， 高电压电源信号通常为 36 V -72V , 低电压电源信号通常为 1.8 V -12 V。 在本发明实施中， 高电压电源信号为 48V, 低电压电源信号为 3.3V 或 5.0V。
进一步地， 在本发明的另一实施例中， 緩启电路单元具体包括保险管、 緩 启 MOS模块和滤波模块。 保险管， 用于对接收到的高电压电源信号进行过流 保护， 输出被过流保护的高电压电源信号。 緩启 MOS模块， 用于延緩所述保 险管输出的被过流保护的高电压电源信号。 緩启 MOS模块通常由 MOS场效 应晶体管构成（MOS, Metal-Oxide-Semiconductor , 半导体金属氧化物） ， 该 緩启 MOS模块相当于一个延时开关，延緩导通緩启 MOS模块中的緩启电路。 滤波模块， 用于过滤緩启 MOS模块输出的高电压电源信号中的共模干扰信号 和差模干扰信号， 从而输出延緩后的高电压电源信号。 一般地， 在光开关控制 领域中，高电压电源信号通常为 36 V -72V ，低电压电源信号通常为 1.8 V -12 V。
进一步地， 在本发明的另一实施例中，供电单元还可以进一步包括合路模 块。 在实际应用中， 为了提高供电单元的安全可靠性， 通常会输入给供电单元 两路高电压电源信号。 本发明实施例中的高电压电源信号为 48V,合路模块用 于将两路高电压电源信号合为一路高电压电源信号， 输入给緩启电路单元。
进一步地， 为了提高供电单元的安全可靠性， 在本发明的另一实施例中， 有两个供电单元， 一个为主用电源， 一个为备用电源。 备用电源的结构， 可以 与上述实施例中所描述的供电单元一致， 也可以只包括一个緩启 MOS模块和 一个开关模块。该备用电源可不包括电源转换模块，直接接收低电压电源信号。 体的电路形式做限定。 图 3示出了本发明实施例的检测电路单元结构示意图， 由一个运算放大器、 一个光耦器件、 五个分压电阻组成。 运算放大器的负输入
端为基准电压 "V基准" 的输入端。 运算放大器的正输入端相连的分压电阻 A 端与待检测的供电单元相连接。在实际的应用中，检测电路单元检测的供电单 元中的电源信号为高电压电源信号，而加在光耦器件另一端的电压通常为低电 压电源信号。在本发明实施例中，比如，供电单元中的高电压电源信号为 48V, 加在光耦器件靠近控制单元一端的低电压电源信号为 3.3V, 基准电压 V 为 1.27V, 加在运算放大器与光耦器件之间的分压电阻 R上的电压为 27V。 光耦 器件的主要功能为，将光耦器件两侧的高电压与低电压相隔离。 光耦器件的高 电压一侧为与供电单元相连接的电路，光耦器件的低电压一侧为与控制单元相 连接的电路。该检测电路单元用于检测供电单元中的高电压电源信号的电压是 否正常， 若高电压电源信号低于检测电路单元中设定的基准电压， 则向控制单 元输出电压告警信号；若高电压电源信号大于等于检测电路单元中设定的基准 电压， 则向控制单元输出电压正常信号。若检测电路单元进一步地用于检测备 用电源的状态， 则可以在现有电路结构的基础上， 直接增加分压检测电路如图
4所示。 B端用于与备用电源相连接。 将主用电源和备用电源与基准电源做比 较， 可以看出， 当主、 备电源都为高电平时即为正常， 若为低电平时则为不正 常， 说明主用电源或备用电源出现了故障。
需要说明的是， 本发明实施例中的检测电路单元，一方面需要接收来自供 电单元提供的低电压电源信号来作为检测电路单元自身的电路运作需要的电 能， 另一方面， 又连接至供电单元的高电压电源信号， 用以检测供电单元的电 压状态是否正常。
进一步地， 在本发明的另一实施例中，控制单元用于根据所述检测电路单 元输出的电压告警信号和电压正常信号，以及存储于所述控制单元的光开关倒 换真值表， 输出控制信号和电源状态信号。 本发明中的控制单元可以使用 FPGA芯片 （Field - Programmable Gate Array, 现场可编程门阵列）， 或 ASIC ( Application Specific Integrated Circuit , 专用集成电路）等集成电路实现。 本 发明实施例中的控制单元，用于根据所述检测电路单元输出的电压告警信号和 电压正常信号， 以及存储于所述控制单元的光开关倒换真值表， 输出控制信号 和电源状态信号。 在本发明的控制单元中， 预先会根据客户的需求， 定制各种 类型的光开关倒换真值表。 光开关倒换真值表的内容如图 6、 图 7、 图 8和图 9所示。
如果客户需要使用双稳态光开关实现双稳态功能， 即， 当光开关供电电源 切断后，光开关的状态停留在断电前的通道，则可以使用光开关倒换真值表（ 1 ) (图 6 ) 。 从光开关倒换真值表（1 ) 的内容可以看到， 在电源发生故障时， 光开关是否倒换有两种可能， 即倒换到备用通道或不倒换。 当控制单元接收到 检测电路单元输出的电压正常信号时，会根据内部的集成电路设定的程序，根 据光开关倒换真值表（1 ) 中电源为正常时的两种倒换方式， 选择确定是否倒 换到备用通道或不倒换。当控制单元接收到检测电路单元输出的电压告警信号 时， 说明当前的供电单元的电源出了故障， 如断电、 电压过低、 电源波动较大 等情况时， 因为光开关倒换真值表（1 ) 中电源为故障时有两种倒换方式， 会 根据内部的集成电路设定的程序，选择确定是否倒换到备用通道或不倒换，使 光开关的导通状态与供电单元故障前的光开关的导通状态一致。
如果客户需要使用双稳态光开关实现单稳态功能， 即， 当光开关供电电源 切断后，光开关的状态始终倒换到默认通道，则可以使用光开关倒换真值表（ 2 ) (图 7 )和光开关倒换真值表（ 3 ) (图 8 ) 。 从光开关倒换真值表（ 2 ) 的内 容可以看到，在电源发生故障时，光开关是否倒换只有一种可能，即 0-不倒换， 停留在主用通道上。 从光开关倒换真值表（3 ) 的内容可以看到， 在电源发生 故障时， 光开关是否倒换只有一种可能， 即 1-倒换到备用通道， 停留在备用通 道上。 控制单元可以通过选择使用光开关倒换真值表（2 )或光开关倒换真值 表（3 ) , 输出控制信号去控制锁存器， 进而控制光开关驱动电路单元的驱动 电流信号。 本发明实施例可根据用户的需求， 通过选择光开关倒换真值表， 使 光开关在供电单元出现故障时，能使业务信号传输在用户要求的主用通道或备 用通道。
进一步地， 在本发明的另一实施例中， 当供电单元出现故障时， 如断电、 电压过低、 电源波动较大等情况， 检测电路单元， 用于及时检测供电单元的状 态， 并向控制单元输出电压告警信号。 当供电单元正常工作时， 则向控制单元 输出电压正常信号。 当有两个供电单元， 即主用电源和备用电源时， 检测电路 单元也可以检测备用电源的状态。 将主用电源和备份电源与基准电源做比较。 相应地，存储在控制单元中的光开关倒换真值表也可以相应地变为图 9所描述 的光开关倒换真值表（4 ) 。 本发明实施例可根据客户的需求， 将光开关倒换 真值表（4 ) 中的 "光开关是否倒换" 一项的内容做相应的修改， 以满足客户
是需要双稳态光开关实现单稳态功能或双稳态功能。
进一步地， 在本发明的另一实施例中， 锁存器， 用于接收控制信号和电源 状态信号， 锁存当前状态的所述控制信号， 并将所述锁存的控制信号发送给光 开关驱动电路单元。锁存器是一种对脉冲电平敏感的存储单元电路， 它们可以 在特定输入脉冲电平作用下改变状态。锁存， 就是把信号暂存以维持某种电平 状态。 锁存器的最主要作用是緩存， 只有在有锁存信号时， 输入的控制信号的 状态才被保存到输出， 直到下一个锁存信号。 通常只有 0和 1两个值。 典型的 逻辑电路是 D触发器。 本发明实施例并不限定具体的锁存器的类型。 当锁存 器接收到电源状态信号时，锁存器会将控制单元发送的控制信号发送给光开关 驱动电路单元； 当没有接收到电源状态信号时，锁存器会锁存当前状态的控制 信号， 并将所述锁存的当前状态的控制信号发送给光开关驱动电路单元。
光开关驱动电路单元， 用于根据接收到的锁存的控制信号，输出驱动电流 信号。 光开关驱动电路单元可以由集成电路或由三极管组成的电路构成， 其工 作原理为，根据接收到的锁存器发送的锁存的控制信号， 输出驱动电流信号给 双稳态光开关。该驱动电流信号可分为正向电流和反向电流。 当不同方向的电 流流经双稳态光开关中的线圈时， 线圈的吸合力会有不同的方向，从而改变光 开关在主、 备两条通道上的路径。
储能单元， 用于存储来自供电单元的电能， 并在供电单元出现故障后， 向 光开关驱动电路单元和锁存器提供所述电能。储能单元可以是电容，也可以是 电池等其他可储存电能的器件。在实际使用中， 可根据需求选择储能单元的容 量。 进一步地， 由于供电系统都有最大容性负载限制， 在本发明实施例中， 如 图 5所示的储能模块的结构示意图，将储能单元划分成若干小的储能模块， 并 将所述若干小的储能模块并联。 本发明实施例中， 具体为， 若干个电容器件， 图中的小三角符号为接地端， 电容的另一端为正向电源输入端。 当供电单元正 常工作时，供电单元分别给小的储能模块充电， 以免同时充电损坏供电系统或 导致供电系统不正常。
进一步地， 在本发明的另一实施例中， 在储能单元前面增加一个开关电路 模块， 比如， 緩启 MOS模块。 当供电系统异常时， 通过控制单元的控制， 关 闭储能单元前面的开关电路模块，使储能单元所储存的电能只提供给光开关驱 动电路单元和锁存器， 以便用最小的电能完成光开关倒换， 同时， 避免了储能
单元储存的能量倒流而导致电能浪费的问题。
双稳态光开关， 用于根据所述驱动电流信号， 倒换主用通道和备用通道。 双稳态光开关内的线圈会根据驱动电流信号的方向， 产生不同方向的吸合力， 从而将流经光开关上的业务信号倒换到主用通道或备用通道。 由此可见， 在本发明中， 通过使用检测电路单元、 控制单元、 锁存器和光 开关驱动电路单元， 本发明实施例的双稳态光开关实现单稳态功能的装置，解 决了现有技术要想实现光开关的单稳态的功能， 光开关必须为单稳态的光开 关， 即双稳态光开关不能实现单稳态功能的问题， 在不影响现有业务信号传输 的情况下， 可根据客户的需求， 改变光开关的单稳态的功能或双稳态的功能， 从而使得现有网络可根据客户业务的不同需求， 完成不同类型的保护， 满足多 种网络保护的应用。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到本发明 可借助软件加必需的硬件平台的方式来实现， 当然也可以全部通过硬件来实 施， 但很多情况下前者是更佳的实施方式。 基于这样的理解， 本发明的技术方 案对背景技术做出贡献的全部或者部分可以以软件产品的形式体现出来，该计 算机软件产品可以存储在存储介质中， 如 ROM/RAM、 磁碟、 光盘等， 包括若 干指令用以使得一台计算机设备（可以是个人计算机， 服务器， 或者网络设备 等）执行本发明各个实施例或者实施例的某些部分所述的方法。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局 限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易 想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护 范围应该以权利要求书的保护范围为准。
Claims
1、 一种双稳态光开关实现单稳态功能的装置， 其特征在于， 包括， 供电 单元、 检测电路单元、 控制单元、 锁存器、 光开关驱动电路单元、 储能单元和 双稳态光开关；
供电单元， 用于将接收到的高电压电源信号进行緩启和过滤，输出低电压 电源信号给所述检测电路单元、 控制单元、 锁存器、 储能单元和光开关驱动 电路单元；
检测电路单元， 用于检测供电单元中的高电压电源信号的电压是否正常， 若高电压电源信号低于检测电路单元中设定的基准电压，则向控制单元输出电 压告警信号； 若高电压电源信号大于等于检测电路单元中设定的基准电压， 则 向控制单元输出电压正常信号；
控制单元，用于根据所述检测电路单元输出的电压告警信号和电压正常信 号， 以及存储于所述控制单元的光开关倒换真值表，输出控制信号和电源状态 信号；
锁存器， 用于根据接收到的控制信号和电源状态信号，锁存当前状态的所 述控制信号， 并将所述锁存的控制信号发送给光开关驱动电路单元；
储能单元， 用于存储来自供电单元的电能， 并在供电单元出现故障后， 向 光开关驱动电路单元和锁存器提供所述电能；
光开关驱动电路单元， 用于根据接收到的锁存的控制信号，输出驱动电流 信号；
双稳态光开关， 用于根据所述驱动电流信号， 倒换主用通道和备用通道。
2、 如权利要求 1所述的装置， 其特征在于， 所述的供电单元包括緩启电 路单元和电源转换模块；
緩启电路单元， 用于对供电单元接收到的高电压电源信号进行延緩和过 滤， 产生延緩后的高电压电源信号；
电源转换模块，用于将所述延緩后的高电压电源信号转换为低电压电源信 号， 然后将所述低电压电源信号输出给所述检测电路单元、 控制单元、 锁存 器、 储能单元和光开关驱动电路单元。
3、 如权利要求 2所述的装置， 其特征在于， 所述的緩启电路单元包括保 险管、 緩启 MOS模块和滤波模块； 保险管， 用于对接收到的高电压电源信号进行过流保护， 输出被过流保护 的高电压电源信号；
緩启 MOS模块， 用于延緩所述保险管输出的被过流保护的高电压电源信 号；
滤波模块， 用于过滤緩启 MOS模块输出的高电压电源信号中的共模干扰 信号和差模干扰信号， 输出延緩后的高电压电源信号。
4、 如权利要求 1至 3所述的装置， 其特征在于， 所述的储能单元具体包 括至少一个子储能模块， 并将所述至少一个子储能模块并联。
5、 如权利要求 1至 3所述的装置， 其特征在于， 所述的装置进一步包括 一个开关电路模块， 所述开关电路模块位于所述供电单元与所述储能单元之 间； 所述的控制单元进一步用于， 当供电单元发生故障时， 控制关断所述开关 电路模块。
6、 如权利要求 2和 3所述的装置， 其特征在于， 所述的供电单元还可以 进一步包括合路单元；所述的合路单元用于将输入给供电单元的两路高电压电 源信号进行合路， 输出合路后的高电压电源信号给所述緩启电路单元。
7、 如权利要求 1至 3所述的装置， 其特征在于， 所述的控制单元为现场 可编程门阵列芯片， 或专用集成电路芯片。
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| 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 |
| PCT/CN2011/079109 WO2012106952A1 (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 |
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| PCT/CN2011/079109 WO2012106952A1 (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 |
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| CN115453934A (zh) * | 2022-09-08 | 2022-12-09 | 安徽中澳科技职业学院 | 一种大规模光开关阵列控制电路系统及控制方法 |
| 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)
| 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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Patent Citations (4)
| 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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| CN102369666B (zh) | 2013-03-20 |
| CN102369666A (zh) | 2012-03-07 |
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