WO2022062671A1 - 计时同步方法、目视助航设备控制方法及相关装置 - Google Patents

计时同步方法、目视助航设备控制方法及相关装置 Download PDF

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Publication number
WO2022062671A1
WO2022062671A1 PCT/CN2021/110219 CN2021110219W WO2022062671A1 WO 2022062671 A1 WO2022062671 A1 WO 2022062671A1 CN 2021110219 W CN2021110219 W CN 2021110219W WO 2022062671 A1 WO2022062671 A1 WO 2022062671A1
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Prior art keywords
timing
pps signal
working
pps
instruction
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PCT/CN2021/110219
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English (en)
French (fr)
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ru 吴润涛
杨嘉文
狄东旭
吕志明
宋恒柱
李民
陈庚军
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深圳星标科技股份有限公司
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Publication of WO2022062671A1 publication Critical patent/WO2022062671A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
    • G01S19/256—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to timing, e.g. time of week, code phase, timing offset
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/16—Controlling the light source by timing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the invention relates to the technical field of synchronization control, in particular to a timing synchronization method, a control method for visual aids to navigation and related devices.
  • the present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the purpose of the present invention is to provide a timing synchronization method and device, and a control method and device for visual navigation aids.
  • the timing synchronization method includes:
  • a work timing instruction is output, and the work timing instruction is used to control the timer to perform work cycle timing.
  • the receiving the PPS signal sent by the GNSS system and performing pulse timing according to the PPS signal includes:
  • the pulse timing ends.
  • the working timing instruction is used to control the timer to start timing the working cycle, or,
  • a method for controlling a visual navigation aid includes:
  • the flashing period is timed according to the working timing instruction, and the visual navigation aid device is controlled to flash according to the frequency within the flashing period.
  • the receiving the PPS signal sent by the GNSS system and performing pulse timing according to the PPS signal includes:
  • the pulse timing ends.
  • timing the flash cycle according to the working timing instruction includes:
  • the timer is controlled to start executing the flash cycle timing according to the working timing instruction, or,
  • the timer is controlled to perform flash cycle timing after delaying for a predetermined period of time.
  • a time synchronization apparatus provided according to an embodiment of the present invention includes:
  • a first receiving unit configured to receive the PPS signal sent by the GNSS system and perform pulse timing according to the PPS signal
  • the first output unit is configured to output a working timing instruction when the pulse timing ends, where the working timing instruction is used to control the timer to perform working cycle timing.
  • a visual navigation aid device control device provided according to an embodiment of the present invention includes:
  • the second receiving unit is used to receive the PPS signal sent by the GNSS system and perform pulse timing according to the PPS signal;
  • the second output unit is configured to output a working timing instruction when the pulse timing ends, where the working timing instruction is used to control the timer to perform flash cycle timing.
  • the control unit is used for timing the flashing period according to the working timing instruction, and controlling the visual navigation aid device to flash according to the frequency in the flashing period.
  • a visual navigation aid device provided according to an embodiment of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer In the program, the control method of the visual aids for navigation as described above is realized.
  • a computer program is stored thereon, and when the program is executed by a processor, the above-mentioned control method for a visual navigation aid device is implemented.
  • the pulse timing is performed by using the PPS signal sent by the GNSS system, and the working timing command is output when the pulse timing ends. Since the PPS signal can indicate UTC The precision can reach the nanosecond level at the whole second of the time. Therefore, the timing according to the PPS signal has high precision, so that when each controlled device is timed according to the working timing instruction, each controlled device can execute actions synchronously or sequentially, such as If the controlled device is a visual navigation aid device, each visual navigation aid device can be flashed synchronously or in sequence. The synchronous execution or sequence execution has higher precision and can meet the requirements of high-precision synchronization or sequence control.
  • Fig. 1 is the application environment diagram of the timing synchronization method of the present invention
  • Fig. 2 is the flow chart of one embodiment of the timing synchronization method of the present invention.
  • FIG. 3 is a flowchart of another embodiment of the timing synchronization method of the present invention.
  • FIG. 4 is a flowchart of an embodiment of a method for controlling a visual aid to navigation equipment of the present invention
  • FIG. 5 is a schematic structural diagram of an embodiment of the time synchronization device of the present invention.
  • FIG. 6 is a schematic structural diagram of a first determining unit in the time synchronization device of the present invention.
  • FIG. 7 is a schematic structural diagram of an embodiment of a control device for visual aids to navigation according to the present invention.
  • FIG. 8 is a schematic structural diagram of a second determination unit in the visual navigation aid equipment control device of the present invention.
  • FIG. 9 is a schematic structural diagram of an embodiment of the visual aids for navigation according to the present invention.
  • a predetermined number of visual aids are usually required to guide the aircraft to fly or land.
  • multiple visual navigation aids in a certain area or a building can flash synchronously, or flash in a predetermined sequence, so as to achieve warning and guidance.
  • these visual navigation aids start to work according to the work cycle set by themselves.
  • a certain time point of the respective clocks of the visual navigation aids is used as the timing. At the starting point, it is difficult for each visual aids to flash synchronously to achieve accurate synchronization, and when flashing sequentially, the delay time of each visual aid is also inaccurate, resulting in the sequential flashing failing to meet the predetermined requirements.
  • the timing synchronization method provided by the present application can be applied to the application environment shown in FIG. 1 .
  • the application environment may include a controlled device 100 and a GNSS system 200, and the controlled device 100 may establish a connection with the GNSS system 200 through a satellite network.
  • the GNSS system 200 may transmit PPS signals, one PPS signal per second, one minute as a signal period, and 60 PPS signals per minute.
  • the controlled device 100 may be various devices having a positioning module (eg, a GPS module), such as a visual navigation aid device and the like.
  • the controlled device 100 performs predetermined work. Taking “visual aids to navigation" as an example, during the working cycle, the visual aids for navigation work according to the predetermined frequency. Flash work needs to be performed, and to ensure that multiple visual aids can work synchronously within a one-minute duty cycle, it is necessary to ensure that the starting point of the one-minute duty cycle is the same.
  • the controlled device 100 may receive the PPS signal sent by the GNSS system 200, and perform pulse timing according to the PPS signal. When the pulse timing ends, a work timing instruction is output, and the work timing instruction can be used to control the timer of the controlled device 100 to perform work cycle timing.
  • the pulse timing is performed by using the PPS signal sent by the GNSS system, and the working timing command is output at the end of the pulse timing. Since the PPS signal can indicate the whole second of UTC, the precision can reach the nanosecond level. Therefore, according to the PPS signal timing , has high precision, so that when each controlled device 100 timed according to the working timing instruction, each controlled device 100 can perform actions synchronously or sequentially, for example, the controlled device 100 is a visual navigation aid device. Depending on the navigation aids flashing synchronously or in sequence, the synchronous execution or sequence execution has higher precision and can meet the requirements of high-precision synchronization or sequence control.
  • FIG. 2 shows a flowchart of an embodiment of a timing synchronization method provided by an embodiment of the present invention.
  • the timing synchronization method can be executed by a controlled device, and specifically includes:
  • S101 Receive the PPS signal sent by the GNSS system and perform pulse timing according to the PPS signal.
  • the controlled device has a GNSS positioning module, which can receive the PPS signal of the GNSS system.
  • the PPS (Pulse Per Second) signal is also a second pulse.
  • one second pulse is sent every second. Its function is to use to indicate the time of the whole second, which is usually marked by the rising edge of the PPS second pulse.
  • the GPS system can give the UTC time, and there will be a delay when the user receives it.
  • the rising edge of the PPS signal is introduced to mark the whole second of UTC. The precision is very high, which can reach the nanosecond level. , and there is no accumulated error, so the time error of the PPS signal received by each controlled device is very small.
  • the pulse timing can be performed according to the sequentially received PPS signals. Due to the small delay of the PPS signal, it can ensure that the time error of the PPS signal received by each controlled device is very high. Therefore, the pulse timing of each controlled device can maintain a high synchronization accuracy.
  • the GNSS system can be but not limited to the US GPS system, China Beidou navigation system, Russia GLONASS system, EU GALILEO system, Japan's QZSS system and India's IRNSS system, etc., as long as it can send PPS signals.
  • a work timing instruction is output, and the timer of the controlled device can perform work cycle timing according to the work timing instruction.
  • the work timing instruction is used to control the timer to start timing the work period, that is, after the timer of the controlled device receives the work timing instruction, the control timer immediately starts timing the work period. Due to the high synchronization accuracy of the pulse timing of each controlled device, when each controlled device starts the work cycle timing according to the work timing instruction, the starting point of the work cycle timing is also highly synchronized, thereby ensuring that each controlled device is in the work cycle. Can keep working in sync.
  • the work timing instruction is used to control the timer to extend the predetermined time period to execute the work cycle timing. That is, after the timer of the controlled device receives the work timing instruction, it first delays according to the set predetermined time length, and then starts the timing of the work cycle after the delay. Due to the high synchronization accuracy of the pulse timing of each controlled device, the delay starting point of each controlled device is also highly synchronized. When the predetermined delay time of each controlled device is different, each controlled device can be Work in a predetermined order.
  • the pulse timing is performed by using the PPS signal sent by the GNSS system, and the working timing command is output when the pulse timing ends. Since the PPS signal can indicate the whole second of UTC, the precision can reach nanosecond level. , Therefore, according to the PPS signal timing, it has high precision, so that when each controlled device is timed according to the working timing instruction, each controlled device can perform actions synchronously or sequentially.
  • the controlled device is a visual navigation aid device, then Various visual aids can be flashed synchronously or in sequence, the synchronous execution or sequence execution is more precise, and it can meet the requirements of high-precision synchronization or sequence control.
  • step S101 includes:
  • the PPS signal sent by the GNSS system is one PPS signal sent every second.
  • a signal period is one minute (ie, 60 seconds)
  • each second sends a PPS signal
  • the rising edge of each PPS signal corresponds to a number of seconds.
  • the number of seconds of the first PPS signal is 0, the number of seconds of the second PPS signal is 1, and the number of seconds of the third PPS signal is 2, and the number of seconds for the 60th PPS signal is 59.
  • the delay can be reduced by acquiring the number of seconds corresponding to the PPS signal.
  • the controlled device can control the timer to perform the work cycle timing, for example, control the timer to start the work cycle timing immediately, or control the timer to extend the predetermined time period and then start the work cycle timing.
  • the subsequent PPS signal is continued to be received. That is to say, when the number of seconds has not reached the predetermined value, the controlled device continues to receive subsequent PPS signals, obtains the number of seconds of these PPS signals, and compares the number of seconds with the preset value until there is a PPS signal The number of seconds is equal to the preset value.
  • the seconds of each PPS signal are obtained, and the seconds are used for pulse timing.
  • the pulse timing is more accurate, the time delay is smaller, and the end of the pulse timing can be accurately determined.
  • FIG. 4 shows a flowchart of an embodiment of a method for controlling a visual navigation aid provided by an embodiment of the present invention.
  • a visual navigation aid device which specifically includes:
  • S301 Receive the PPS signal sent by the GNSS system and perform pulse timing according to the PPS signal.
  • steps S301 and S302 are the same as steps S101 and S102 in the embodiment of FIG. 1 .
  • steps S101 and S102 in the embodiment of FIG. 1 which will not be repeated here.
  • a working timing command is output, and the timer of the visual navigation aids responds to the working timing command to execute the timing of the flash cycle, and controls the light source of the visual navigation aids to flash at a predetermined frequency within the flash cycle. , for example a flash cycle of 60 seconds, flashes 40 times.
  • the timing of the flash period according to the working timing instruction may be: controlling the timer to start the timing of the flash period according to the working timing instruction.
  • the multiple visual navigation aids all use the timing reference point as the timing starting point of a flash cycle, so that a plurality of the visual navigation aids are timed.
  • the visual aids perform flash work synchronously.
  • the timing of the flash period according to the working timing instruction may also be: controlling the timer according to the working timing instruction to delay the timing of the flash period for a predetermined period of time.
  • the predetermined time delays of the plurality of visual navigation aids are different, so that the plurality of visual navigation aids sequentially perform flashing work in a predetermined order.
  • the timer of the visual navigation aids can immediately start a flash cycle timing according to the working timing instruction.
  • each visual navigation aid can flash at the same time. work, and then achieve the effect of synchronous flashing.
  • the timer of the visual aids can be delayed for a predetermined period of time according to the working timing instruction before starting the timing of a flash cycle, and the predetermined period of delay can be set according to the control requirements.
  • the predetermined time delays of the visual navigation aids may be different. In this way, each visual navigation aid can perform flashing work in sequence according to a predetermined order, thereby achieving a sequential flashing effect.
  • pulse timing is performed by using the PPS signal sent by the GNSS system, and a working timing command is output when the pulse timing ends.
  • the PPS signal can indicate the whole second of UTC, the precision can reach nanometers. Second-level, therefore, according to the PPS signal timing, it has high precision, so that when each visual navigation aids time according to the working timing command, each visual navigation aids can be flashed synchronously or in sequence, synchronously or sequentially.
  • the precision of the work is higher, and it can meet the requirements of high-precision synchronization or sequence control.
  • FIG. 5 shows a schematic structural diagram of an embodiment of a time synchronization apparatus provided by an embodiment of the present invention.
  • the time synchronization device specifically includes:
  • the first receiving unit 501 is configured to receive the PPS signal sent by the GNSS system and perform pulse timing according to the PPS signal;
  • the first output unit 502 is configured to output a working timing instruction when the pulse timing ends, where the working timing instruction is used to control the timer to perform working cycle timing.
  • the first receiving unit 501 includes:
  • the first receiving module 5021 is configured to receive multiple PPS signals continuously sent by the GNSS system within one signal period.
  • the first acquiring module 5022 is configured to acquire the number of seconds of each PPS signal, where the number of seconds of the PPS signal is the time corresponding to the rising edge of the PPS signal.
  • the first judging module 5023 is configured to end the pulse timing when the number of seconds of one of the received PPS signals reaches a predetermined value.
  • pulse timing is performed by using the PPS signal sent by the GNSS system, and a working timing instruction is output when the pulse timing ends. Since the PPS signal can indicate the whole second of UTC, the precision can reach nanosecond level. , Therefore, according to the PPS signal timing, it has high precision, so that when each controlled device is timed according to the working timing instruction, each controlled device can perform actions synchronously or sequentially.
  • the controlled device is a visual navigation aid device, then Various visual aids can be flashed synchronously or in sequence, the synchronous execution or sequence execution is more precise, and it can meet the requirements of high-precision synchronization or sequence control.
  • FIG. 7 shows a schematic structural diagram of an embodiment of an apparatus for controlling a visual navigation aid provided by an embodiment of the present invention.
  • the visual aids control device specifically includes:
  • the second receiving unit 601 is configured to receive the PPS signal sent by the GNSS system and perform pulse timing according to the PPS signal;
  • the second output unit 602 is configured to output a working timing instruction when the pulse timing ends, where the working timing instruction is used to control the timer to perform flash cycle timing.
  • the control unit 603 is used for timing the flashing period according to the working timing instruction, and controlling the visual navigation aid device to flash according to the frequency within the flashing period.
  • the second receiving unit 601 includes:
  • the second receiving module 6021 is configured to receive multiple PPS signals continuously sent by the GNSS system within one signal period.
  • the second acquiring module 6022 is configured to acquire the number of seconds of each PPS signal, where the number of seconds of the PPS signal is the time corresponding to the rising edge of the PPS signal.
  • the second judging module 6023 is configured to end the pulse timing when the received number of seconds of one of the PPS signals reaches a predetermined value.
  • pulse timing is performed by using the PPS signal sent by the GNSS system, and a working timing command is output when the pulse timing ends.
  • the PPS signal can indicate the whole second of UTC, the accuracy can be Reaching the nanosecond level, therefore, according to the PPS signal timing, it has high precision, so that when each visual navigation aid is timed according to the working timing command, each visual navigation aid can be flashed synchronously or in sequence, synchronously flashing or
  • the sequential blinking work has higher precision and can meet the requirements of high-precision synchronization or sequential control.
  • FIG. 9 shows a visual navigation aid 300 provided by an embodiment of the present invention, including a memory 302 , a processor 301 , and a device stored in the memory 302 and running on the processor 301 .
  • the computer program 3021 when the processor 301 executes the computer program 3021, implements the above-mentioned control method for the visual navigation aid.
  • the computer program 3021 can be divided into one or more modules/units, and the one or more modules/units are stored in the memory 302 and executed by the processor 301 to complete the this invention.
  • the one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program 3021 in the computer device 300 .
  • the visual navigation aid 300 may include, but is not limited to, a processor 301 and a memory 302 . Those skilled in the art can understand that the figure is only an example of the visual navigation aid 300, and does not constitute a limitation on the visual navigation aid 300, and may include more or less components than the one shown, or combine some components , or different components, for example, the visual navigation aid device 300 may further include an input and output device, a network access device, a bus, and the like.
  • the so-called processor 301 may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete preset hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory 302 may be an internal storage unit of the visual navigation aid device 300 , such as a hard disk or a memory of the visual navigation aid device 300 .
  • the memory 302 may also be an external storage device of the visual navigation aid 300, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, flash memory card (Flash Card), etc.
  • the memory 302 may also include both an internal storage unit of the visual navigation aid device 300 and an external storage device.
  • the memory 302 is used to store the computer program 3021 and other programs and data required by the visual navigation aid device 300 .
  • the memory 302 may also be used to temporarily store data that has been output or will be output.
  • the embodiment of the present invention also provides a computer storage medium, on which a computer program 3021 is stored, and when the program is executed by the processor 301, the above-mentioned control method for a visual navigation aid device is implemented.
  • the computer program 3021 can be stored in a computer-readable storage medium, and when the computer program 3021 is executed by the processor 301 , can implement the steps of the above-mentioned method embodiments.
  • the computer program 3021 includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like.
  • the computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, removable hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc.
  • the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Excluded are electrical carrier signals and telecommunication signals.
  • the disclosed apparatus/visual aids 300 and method may be implemented in other ways.
  • the embodiments of the apparatus/visual aids 300 described above are only illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other divisions.
  • multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
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  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

计时同步方法、时间同步装置、目视助航设备控制方法及装置、目视助航设备、计算机存储介质。计时同步方法包括：接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时（S101）；在脉冲计时结束时输出工作计时指令，工作计时指令用于控制计时器执行工作周期计时（S102）。目视助航设备控制方法还包括根据工作计时指令进行闪光周期计时，并控制目视助航设备在闪光周期内按照频率闪光工作（S303）。时间同步装置包括实现时间同步方法的第一接收单元（501）和第一输出单元（502）。目视助航设备控制装置包括实现目视助航设备控制方法的第二接收单元（601）、第二输出单元（602）和控制单元（603）。目视助航设备（300）包括存储器（302）上存储的计算机程序（3021）、可在处理器（301）上运行，计算机程序（3021）可存储于计算机存储介质中。各个受控设备可以同步执行或顺序执行动作，各个目视助航设备同步闪烁或按照顺序闪烁，满足高精度同步或顺序控制要求。

Description

计时同步方法、目视助航设备控制方法及相关装置 技术领域
本发明涉及同步控制技术领域，尤其涉及一种计时同步方法、目视助航设备控制方法及相关装置。
背景技术
在多个受控设备同步控制过程中，难以避免地容易出现各个受控设备受各种因素造成时间不同步，进而各个受控设备难以达到准确地同步控制。以目视助航设备为例，在临近机场或机场内等建筑物上，一般需要配置一定数量的目视助航设备，这些目视助航设备需要按照周期进行同步闪烁或顺序闪烁，然而，各个目视助航设备自身时间存在误差，因此，同步控制精度较低，难以满足高精度控制要求。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明的目的在于提出一种计时同步方法、装置及目视助航设备控制方法、装置。
为实现上述目的，第一方面，根据本发明实施例提供的计时同步方法，包括：
接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行工作周期计时。
根据本发明的一个实施例，所述接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时包括：
接收GNSS系统在一个信号周期内连续发送的多个PPS信号；
获取各个PPS信号的秒数，所述PPS信号的秒数为PPS信号的上升沿对应的时间；
当接收到的一个所述PPS信号的秒数达到预定值时，脉冲计时结束。
根据本发明的一个实施例，所述工作计时指令用于控制计时器开始执行工作周期计时，或者，
用于控制计时器延长预定时长后执行工作周期计时。
第二方面，根据本发明实施例提供的目视助航设备控制方法，包括：
接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行闪光周期计时；
根据所述工作计时指令进行闪光周期计时，并控制所述目视助航设备在所述闪光周期内按照频率闪光工作。
根据本发明的一个实施例，所述接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时包括：
接收GNSS系统在一个信号周期内连续发送的多个PPS信号；
获取各个PPS信号的秒数，所述PPS信号的秒数为PPS信号的上升沿对应的时间；
当接收到的一个所述PPS信号的秒数达到预定值时，脉冲计时结束。
根据本发明的一个实施例，根据所述工作计时指令进行闪光周期计时包括：
根据所述工作计时指令控制计时器开始执行闪光周期计时，或者，
根据所述工作计时指令控制计时器延时预定时长后执行闪光周期计时。
第三方面，根据本发明实施例提供的时间同步装置，包括：
第一接收单元，用于接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
第一输出单元，用于在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行工作周期计时。
第四方面，根据本发明实施例提供的目视助航设备控制装置，包括：
第二接收单元，用于接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
第二输出单元，用于在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行闪光周期计时。
控制单元，用于根据所述工作计时指令进行闪光周期计时，并控制所述目视助航设备在所述闪光周期内按照频率闪光工作。
第五方面，根据本发明实施例提供的目视助航设备，包括存储器、处理器以及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如上所述的目视助航设备控制方法。
第六方面，根据本发明实施例提供的计算机存储介质，其上存储有计算机程序，该程序被处理器执行时实现如上所述的目视助航设备控制方法。
根据本发明实施例提供的计时同步方法、目视助航设备控制方法及相关装置，利用GNSS系统发送的PPS信号进行脉冲计时，并在脉冲计时结束时输出工作计时指令，由于PPS信号可以标示UTC的整秒时刻，精度可以达到纳秒级，因此，根据PPS信号计时，具有较高的精度，使得各个受控设备根据工作计时指令计时时，各个受控设备可以同步执行或顺序执行动作，例如受控设备为目视助航设备，则可以实现各个目视助航设备同步闪烁或按照顺序闪烁，同步执行或顺序执行的精度更高，能够满足高精度同步或顺序控制要求。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1是本发明计时同步方法的应用环境图；
图2是本发明计时同步方法一个实施例的流程图；
图3是本发明计时同步方法另一个实施例的流程图；
图4是本发明目视助航设备控制方法一个实施例的流程图；
图5是本发明时间同步装置一个实施例的结构示意图；
图6是本发明时间同步装置中第一确定单元的结构示意图；
图7是本发明目视助航设备控制装置一个实施例的结构示意图；
图8是本发明目视助航设备控制装置中第二确定单元的结构示意图；
图9是本发明目视助航设备实施例的结构示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
相关技术中，多个受控设备通常在同步或顺序执行动作时，存在较大的误差，造成同步执行效果或顺序执行较差，以“目视助航设备”为例，在机场附近或机场内通常需要配置预定数量的目视助航设备，以引导航空器飞行或降落。通常，根据航空规范要求，某个区域或某个建筑物上的多个目视助航设备可以同步闪烁，或者按照预定顺序闪烁，进而达到警示和引导作用。然而，这些目视助航设备根据自身设定的工作周期开始工作，但是，由于每个目视助航设备的时钟存在误差，所以，以目视助航设备各自时钟的某个时间点作为计时起点，则各个目视助航设备在进行同步闪烁难以达到准确同步，而在进行顺序闪烁时，各个目视助航设备的延时时间也不准确，进而导致顺序闪烁达不到预定要求。
参照图1所示，本申请提供的计时同步方法，可以应用于如图1所示的应用环境中。该应用环境包括可以包括受控设备100和GNSS系统200，受控设备100可以通过卫星网络与GNSS系统200建立连接。
GNSS系统200可以发送PPS信号，每秒钟发送一个PPS信号，一个分钟为一个信号周期，每分钟发送60个PPS信号。受控设备100可以是具有定位模块(例如GPS模块)的各种设备，例如目视助航设备等。
受控设备100在工作周期内，受控设备100执行预定工作。以“目视助航设备”为例，在工作周期内，目视助航设备按照预定频率进行闪光工作，例如工作周期均为一分钟，则目视助航设备在一分钟(工作周期)内需要执 行闪光工作，要确保多个目视助航设备在一分钟的工作周期内能够同步工作，则要确保一分钟工作周期的起始点相同。
受控设备100可以接收GNSS系统200发送的PPS信号，并根据PPS信号进行脉冲计时。在脉冲计时结束时输出工作计时指令，则利用该工作计时指令可以控制受控设备100的计时器执行工作周期计时。
本申请中，利用GNSS系统发送的PPS信号进行脉冲计时，并在脉冲计时结束时输出工作计时指令，由于PPS信号可以标示UTC的整秒时刻，精度可以达到纳秒级，因此，根据PPS信号计时，具有较高的精度，使得各个受控设备100根据工作计时指令计时时，各个受控设备100可以同步执行或顺序执行动作，例如受控设备100为目视助航设备，则可以实现各个目视助航设备同步闪烁或按照顺序闪烁，同步执行或顺序执行的精度更高，能够满足高精度同步或顺序控制要求。
参照图2所示，图2示出了本发明实施例提供的计时同步方法一个实施例的流程图，为了便于描述，仅示出了与本发明实施例相关的部分。具体的，该计时同步方法可以由一受控设备执行，具体包括：
S101、接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时。
具体地，受控设备具有GNSS定位模块，能够接收GNSS系统的PPS信号，PPS(Pulse Per Second)信号也即是秒脉冲，在GNSS系统中，秒脉冲一秒钟发送一个，其的作用是用来指示整秒的时刻，而该时刻通常是用PPS秒脉冲的上升沿来标示。以GPS系统为例，GPS系统能给出UTC时间，用户收到时是会有延时，为了精确授时，引入PPS信号上升沿来标示UTC的整秒时刻，精度很高，可以到纳秒级，并且没有累积误差，因此，各个受控设备接收到的PPS信号时间误差非常小。
如上所述，由于PPS信号时每秒钟发送一个，所以，可以根据依次接收到的PPS信号进行脉冲计时，由于PPS信号的延时小，能够确保各个受控设备接收到的PPS信号时间误差非常小，所以，使得各个受控设备的脉冲计时时能够保持较高的同步精度。
需要说明的是，GNSS系统可以但不限于美国GPS系统、中国北斗导航系统、俄罗斯GLONASS系统、欧盟GALILEO系统、日本的QZSS系统和印度的IRNSS系统等等，只要能够发送PPS信号即可。
S102、在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行工作周期计时。
也就是说，在利用PPS信号进行脉冲计时且计时结束时，输出工作计时指令，受控设备的计时器可以根据该工作计时指令执行工作周期计时。
可以理解的是，工作计时指令用于控制计时器开始执行工作周期计时，也即是，受控设备的计时器接收到的工作计时指令之后，控制计时器立即开始工作周期的计时。由于各个受控设备脉冲计时的同步精度高，所以，各个受控设备根据工作计时指令开始工作周期计时时，则工作周期计时的起始点也是高度同步的，进而可以确保各个受控设备在工作周期可以保持同步工作。
或者，工作计时指令用于控制计时器延长预定时长后执行工作周期计时。也即是，受控设备的计时器接收到的工作计时指令之后，先按照设定的预定时长延时，延时结束后再进行工作周期的计时。由于各个受控设备脉冲计时的同步精度高，所以，各个受控设备进行延时的延时起点也是高度同步的，当各个受控设备延时的预定时长不同时，即可使得各个受控设备按照预定顺序工作。
根据本发明实施例提供的计时同步方法，利用GNSS系统发送的PPS信号进行脉冲计时，并在脉冲计时结束时输出工作计时指令，由于PPS信号可以标示UTC的整秒时刻，精度可以达到纳秒级，因此，根据PPS信号计时，具有较高的精度，使得各个受控设备根据工作计时指令计时时，各个受控设备可以同步执行或顺序执行动作，例如受控设备为目视助航设备，则可以实现各个目视助航设备同步闪烁或按照顺序闪烁，同步执行或顺序执行的精度更高，能够满足高精度同步或顺序控制要求。
参照图3所示，在本发明的一个实施例中，步骤S101包括：
S201、接收GNSS系统在一个信号周期内连续发送的多个PPS信号。
如上所述，GNSS系统发送的PPS信号，是每一秒发送一个PPS信号，例如一个信号周期为一分钟(即60秒)，则在该一分钟的信号周期内，从第0秒至第59秒分别发送一个PPS信号，每一个PPS信号的上升沿对应一个秒数，例如第1个PPS信号的秒数为0，第2个PPS信号的秒数为1，第3个PPS信号的秒数为2，第60个PPS信号的秒数为59。
S202、获取各个PPS信号的秒数，所述PPS信号的秒数为PPS信号的上 升沿对应的时间。
由于GPS系统中引入PPS信号上升沿来标示UTC的整秒时刻，精度很高，所以，该步骤S202中，通过获取PPS信号对应的秒数，可以减少延时。
S203、当接收到的一个所述PPS信号的秒数达到预定值时，脉冲计时结束。
也就是说，在接收到PPS信号并获取PPS信号的秒数之后，将该秒数与预定值进行对比，当秒数与预定值相等，即达到了预定值，则脉冲计时结束，输出工作计时指令。以预定值为59秒为例，在收到第60个PPS信号之后，获取到的第60个PPS信号的秒数即为59，此时，该秒数与预定值相等，即达到了预定值，则输出工作计时指令。受控设备根据该工作计时指令，可以控制计时器执行工作周期计时，例如控制计时器立即开始工作周期的计时，或者控制计时器延长预定时长后再开始工作周期计时。
此外，当接收到的所述PPS信号的秒数没有达到预定值时，继续接收后续的PPS信号。也就是说，当秒数还未达到预定值时，受控设备继续接收后续的PPS信号，并获取这些PPS信号的秒数，并对秒数与预设值进行对比，直至有一个PPS信号的秒数与预设值相等。
本实施例中，利用获取各个PPS信号的秒数，利用秒数进行脉冲计时，如此，使得脉冲计时更加准确，时延更小，并且，能够准确地判断脉冲计时结束。
参照图4所示，图4示出了本发明实施例提供的目视助航设备控制方法一个实施例的流程图，为了便于描述，仅示出了与本发明实施例相关的部分。具体的，该计时同步方法可以由一目视助航设备执行，具体包括：
S301、接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时。
S302、在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行闪光周期计时。
上述步骤S301及步骤S302与图1实施例的步骤S101及S102相同，具体可参考图1实施例所述的步骤S101及S102，在此不再赘述。
S303、根据所述工作计时指令进行闪光周期计时，并控制所述目视助航设备在所述闪光周期内按照频率闪光工作。
也就是说，脉冲计时结束输出工作计时指令，目视助航设备的计时器响 应工作计时指令，执行闪光周期的计时，并且，控制目视助航设备的光源在闪光周期内按照预定频率闪烁工作，例如一个闪光周期为60秒，闪烁40次。
可以理解的是，根据所述工作计时指令进行闪光周期计时可以是：根据所述工作计时指令控制计时器开始执行闪光周期计时。较佳地，当所述目视助航设备为多个时，多个所述目视助航设备均以所述计时参考点作为一个闪光周期的计时起点进行计时，以使多个所述目视助航设备同步执行闪光工作。
或者，根据所述工作计时指令进行闪光周期计时也可以是：根据所述工作计时指令控制计时器延时预定时长后执行闪光周期计时。较佳地，多个所述目视助航设备延时的所述预定时长不同，以使多个所述目视助航设备按照预定顺序依次执行闪光工作。
也就是说，目视助航设备的计时器可以根据工作计时指令立即开始一个闪光周期计时，当多个目视助航设备均开始一个闪光周期计时时，则各个目视助航设备可以同时闪烁工作，进而达到同步闪的效果。
此外，目视助航设备的计时器可以根据工作计时指令先延时预定时长后再开始进行一个闪光周期的计时，延时的预定时长可以根据控制要求设置。对于多个目视助航设备而言，各个目视助航设备延时的所述预定时长可以不同，如此，各个目视助航设备可以按照预定顺序依次执行闪光工作，进而达到顺序闪效果。
根据本发明提供的目视助航设备控制方法，利用GNSS系统发送的PPS信号进行脉冲计时，并在脉冲计时结束时输出工作计时指令，由于PPS信号可以标示UTC的整秒时刻，精度可以达到纳秒级，因此，根据PPS信号计时，具有较高的精度，使得各个目视助航设备根据工作计时指令计时时，可以实现各个目视助航设备同步闪烁或按照顺序闪烁，同步闪烁或顺序闪烁工作的精度更高，能够满足高精度同步或顺序控制要求。
参照图5所示，图5示出了本发明实施例提供的时间同步装置一个实施例的结构示意图，为了便于描述，仅示出了与本发明实施例相关的部分。具体的，该时间同步装置具体包括：
第一接收单元501，用于接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
第一输出单元502，用于在脉冲计时结束时输出工作计时指令，所述工作 计时指令用于控制计时器执行工作周期计时。
参照图6所示，在发明的一个实施例中，第一接收单元501包括：
第一接收模块5021，用于接收GNSS系统在一个信号周期内连续发送的多个PPS信号。
第一获取模块5022，用于获取各个PPS信号的秒数，所述PPS信号的秒数为PPS信号的上升沿对应的时间。
第一判断模块5023，用于当接收到的一个所述PPS信号的秒数达到预定值时，脉冲计时结束。
根据本发明实施例提供的计时同步装置，利用GNSS系统发送的PPS信号进行脉冲计时，并在脉冲计时结束时输出工作计时指令，由于PPS信号可以标示UTC的整秒时刻，精度可以达到纳秒级，因此，根据PPS信号计时，具有较高的精度，使得各个受控设备根据工作计时指令计时时，各个受控设备可以同步执行或顺序执行动作，例如受控设备为目视助航设备，则可以实现各个目视助航设备同步闪烁或按照顺序闪烁，同步执行或顺序执行的精度更高，能够满足高精度同步或顺序控制要求。
参照图7所示，图7示出了本发明实施例提供的目视助航设备控制装置一个实施例的结构示意图，为了便于描述，仅示出了与本发明实施例相关的部分。具体的，该目视助航设备控制装置具体包括：
第二接收单元601，用于接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
第二输出单元602，用于在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行闪光周期计时。
控制单元603，用于根据所述工作计时指令进行闪光周期计时，并控制所述目视助航设备在所述闪光周期内按照频率闪光工作。
参照图8所示，在本发明的一个实施例中，第二接收单元601包括：
第二接收模块6021，用于接收GNSS系统在一个信号周期内连续发送的多个PPS信号。
第二获取模块6022，用于获取各个PPS信号的秒数，所述PPS信号的秒数为PPS信号的上升沿对应的时间。
第二判断模块6023，用于当接收到的一个所述PPS信号的秒数达到预定 值时，脉冲计时结束。
根据本发明实施例提供的目视助航设备控制装置，利用GNSS系统发送的PPS信号进行脉冲计时，并在脉冲计时结束时输出工作计时指令，由于PPS信号可以标示UTC的整秒时刻，精度可以达到纳秒级，因此，根据PPS信号计时，具有较高的精度，使得各个目视助航设备根据工作计时指令计时时，可以实现各个目视助航设备同步闪烁或按照顺序闪烁，同步闪烁或顺序闪烁工作的精度更高，能够满足高精度同步或顺序控制要求。
参照图9所示，图9示出了本发明实施例提供的目视助航设备300，包括存储器302、处理器301以及存储在所述存储器302上并可在所述处理器301上运行的计算机程序3021，所述处理器301执行所述计算机程序3021时实现如上所述的目视助航设备控制方法。
示例性的，所述计算机程序3021可以被分割成一个或多个模块/单元，所述一个或者多个模块/单元被存储在所述存储器302中，并由所述处理器301执行，以完成本发明。所述一个或多个模块/单元可以是能够完成特定功能的一系列计算机程序指令段，该指令段用于描述所述计算机程序3021在所述计算机设备300中的执行过程。
所述目视助航设备300可包括，但不仅限于处理器301、存储器302。本领域技术人员可以理解，图仅仅是目视助航设备300的示例，并不构成对目视助航设备300的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件，例如所述目视助航设备300还可以包括输入输出设备、网络接入设备、总线等。
所称处理器301可以是中央处理单元(Central Processing Unit，CPU)，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(FieldProgrammable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立预设硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
所述存储器302可以是所述目视助航设备300的内部存储单元，例如目视助航设备300的硬盘或内存。所述存储器302也可以是所述目视助航设备300的外部存储设备，例如所述目视助航设备300上配备的插接式硬盘，智能 存储卡(Smart Media Card,SMC)，安全数字(Secure Digital,SD)卡，闪存卡(Flash Card)等。进一步地，所述存储器302还可以既包括所述目视助航设备300的内部存储单元也包括外部存储设备。所述存储器302用于存储所述计算机程序3021以及所述目视助航设备300所需的其他程序和数据。所述存储器302还可以用于暂时地存储已经输出或者将要输出的数据。
本发明实施例还提供了一种计算机存储介质，其上存储有计算机程序3021，该程序被处理器301执行时实现如上所述的目视助航设备控制方法。
所述的计算机程序3021可存储于一计算机可读存储介质中，该计算机程序3021在被处理器301执行时，可实现上述各个方法实施例的步骤。其中，所述计算机程序3021包括计算机程序代码，所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读介质可以包括：能够携带所述计算机程序代码的任何实体或装置、记录介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、电载波信号、电信信号以及软件分发介质等。
需要说明的是，所述计算机可读介质包含的内容可以根据司法管辖区内立法和专利实践的要求进行适当的增减，例如在某些司法管辖区，根据立法和专利实践，计算机可读介质不包括是电载波信号和电信信号。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。
本发明实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本发明实施例系统中的模块或单元可以根据实际需要进行合并、划分和删减。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子预设硬件、或者计算机软件和电子预设硬件的结合来实现。这些功能究竟以预设硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
本发明所提供的实施例中，应该理解到，所揭露的装置/目视助航设备300和方法，可以通过其它的方式实现。例如，以上所描述的装置/目视助航设备300实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通讯连接可以是通过一些接口，装置或单元的间接耦合或通讯连接，可以是电性，机械或其它的形式。
以上所述实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种计时同步方法，其特征在于，包括：
    接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
    在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行工作周期计时。
  2. 根据权利要求1所述的计时同步方法，其特征在于，所述接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时包括：
    接收GNSS系统在一个信号周期内连续发送的多个PPS信号；
    获取各个PPS信号的秒数，所述PPS信号的秒数为PPS信号的上升沿对应的时间；
    当接收到的一个所述PPS信号的秒数达到预定值时，脉冲计时结束。
  3. 根据权利要求2所述的计时同步方法，其特征在于，所述工作计时指令用于控制计时器开始执行工作周期计时，或者，
    用于控制计时器延长预定时长后执行工作周期计时。
  4. 一种目视助航设备控制方法，其特征在于，包括：
    接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
    在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行工作周期计时；
    根据所述工作计时指令进行闪光周期计时，并控制所述目视助航设备在所述闪光周期内按照频率闪光工作。
  5. 根据权利要求4所述的目视助航设备控制方法，其特征在于，所述接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时包括：
    接收GNSS系统在一个信号周期内连续发送的多个PPS信号；
    获取各个PPS信号的秒数，所述PPS信号的秒数为PPS信号的上升沿对应的时间；
    当接收到的一个所述PPS信号的秒数达到预定值时，脉冲计时结束。
  6. 根据权利要求4所述的目视助航设备控制方法，其特征在于，根据所述工作计时指令进行闪光周期计时包括：
    根据所述工作计时指令控制计时器开始执行闪光周期计时，或者，
    根据所述工作计时指令控制计时器延时预定时长后执行闪光周期计时。
  7. 一种时间同步装置，其特征在于，包括：
    第一接收单元，用于接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
    第一输出单元，用于在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行工作周期计时。
  8. 一种目视助航设备控制装置，其特征在于，包括：
    第二接收单元，用于接收GNSS系统发送的PPS信号并根据PPS信号进行脉冲计时；
    第二输出单元，用于在脉冲计时结束时输出工作计时指令，所述工作计时指令用于控制计时器执行闪光周期计时；
    控制单元，用于根据所述工作计时指令进行闪光周期计时，并控制所述目视助航设备在所述闪光周期内按照频率闪光工作。
  9. 一种目视助航设备，包括存储器、处理器以及存储在所述存储器上并可在所述处理器上运行的计算机程序，其特征在于，所述处理器执行所述计算机程序时实现如权利要求4至6任意一项所述的目视助航设备控制方法。
  10. 一种计算机存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现如权利要求4至6任意一项所述的目视助航设备控制方法。
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