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    • 6. 发明专利
    • Data collection system
    • 数据采集​​系统
    • JPS59185443A
    • 1984-10-22
    • JP5994683
    • 1983-04-07
    • Agency Of Ind Science & Technol
    • KOKUKIYOU TOMOO
    • G08C15/02G01M99/00G06F17/40G08C21/00G08C23/06H04B10/00H04B10/278H04B10/524H04B10/54H04L12/44
    • G08C23/06
    • PURPOSE:To collect information from a sensor effectively without any problem such as an electric spark by modulating light of different wavelength by pieces of information from plural sensors of a plant, and performing optical wavelength multiplexing and leading light to a sensor information processor. CONSTITUTION:The sensor information processor 1 has light sources which generate light beams having different wavelengths, and light beams from the light sources are multiplexed on wavelength basis and sent to an optical demultiplexer 3 through optical fibers 2a of a wavelength multiplex transmission line 2. The optical demultiplexer 3 demultiplexes the wavelength multiplexed light into light beams having different wavelengths, which are sent to sensors 51-5n through optical fibers 61-6n. The respective sensors modulates input light by sensor output information and sends the modulated light to an optial multiplexer 4 through optical fibers 71-7n. The multiplexer 4 multiplexes modulated signals having different wavelengths on wavelength multiplex basis and sends the resulting signal to the processor 1 through optical fibers 2b. The processor 1 demultiplexes the input light by a demultiplexer and respective detectors detect modulated information. The multiplexer 3, demultiplexer 4, and sensors operate passively and generate no electric spark.
    • 目的:通过从工厂的多个传感器调制不同波长的信号,通过调制来自工厂的多个传感器的信息,有效地从传感器收集信息而没有任何问题,例如电火花,以及执行光学波长多路复用并将光引导到传感器信息处理器。 构成:传感器信息处理器1具有产生具有不同波长的光束的光源,并且来自光源的光束以波长为基础多路复用,并通过波分复用传输线2的光纤2a发送到光解复用器3。 光解复用器3将波长复用光解复用为具有不同波长的光束,通过光纤61-6n发送到传感器51-5n。 相应的传感器通过传感器输出信息调制输入光,并通过光纤71-7n将调制的光发送到光学多路复用器4。 复用器4多路复用基于波长多路复用的具有不同波长的调制信号,并通过光纤2b将所得信号发送到处理器1。 处理器1通过解复用器对输入光进行解复用,并且相应的检测器检测调制信息。 多路复用器3,解复用器4和传感器被动地操作,不产生电火花。