WO2017173886A1 - 一种光模块 - Google Patents

一种光模块 Download PDF

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Publication number
WO2017173886A1
WO2017173886A1 PCT/CN2017/073527 CN2017073527W WO2017173886A1 WO 2017173886 A1 WO2017173886 A1 WO 2017173886A1 CN 2017073527 W CN2017073527 W CN 2017073527W WO 2017173886 A1 WO2017173886 A1 WO 2017173886A1
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WO
WIPO (PCT)
Prior art keywords
optical module
circuit
optical
circuit board
digital
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PCT/CN2017/073527
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English (en)
French (fr)
Inventor
杨超
胡峻浩
Original Assignee
深圳市大耳马科技有限公司
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Application filed by 深圳市大耳马科技有限公司 filed Critical 深圳市大耳马科技有限公司
Priority to US16/091,974 priority Critical patent/US20190234771A1/en
Publication of WO2017173886A1 publication Critical patent/WO2017173886A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light

Definitions

  • the present invention belongs to the field of optical fiber sensors, and in particular, to an optical module for a fiber optic sensor.
  • fiber optic sensor As a new type of sensor, fiber optic sensor has high detection accuracy and sensitivity, and it has the advantages of low cost, strong anti-interference ability, good portability and scalability, so it is becoming more and more widely used. It is applied to temperature and pressure measurement schemes.
  • fiber optic sensors can be used to convert weak vibrational signals (such as mechanical shock signals from breathing and heartbeat) into optical signals that can acquire physiological signals, such as respiratory signals and/or heartbeat signals.
  • the fiber optic sensor can also be used to detect changes in optical signals generated by pressure changes on the surface of the sensor, such as changes in light intensity, wavelength, modulation frequency, phase, etc., and can be used to determine the user's sitting posture.
  • the control and acquisition circuits of the existing optical fiber sensors are not modular, which results in a complicated structure and high cost of the optical fiber sensor, which also results in a complicated structure and high cost of the application system using the optical fiber sensor.
  • An object of the present invention is to provide an optical module, which aims to solve the problem that the control and acquisition circuits of the existing optical fiber sensor are not modular, thereby causing a complicated structure and high cost of the optical fiber sensor and the application system using the optical fiber sensor. problem.
  • the present invention provides an optical module, the optical module is used for a fiber optic sensor, and the optical module includes a casing, a circuit board installed in the casing, and a digital-to-analog conversion circuit sequentially connected to the circuit board.
  • a light source control circuit and an electro-optical conversion unit, a photoelectrically coupled photoelectric conversion unit, a signal filtering amplification circuit, and an analog-to-digital conversion circuit which are sequentially mounted on the circuit board, and the digital-to-analog conversion circuit and the modulus respectively mounted on the circuit board
  • the circuit board is a rigid circuit board.
  • the circuit board includes an optical soft board and a signal processing circuit board, wherein the electro-optical conversion unit and The photoelectric conversion unit is mounted on the optical soft board, and the digital-to-analog conversion circuit, the light source control circuit, the signal filtering amplification circuit, and the analog-to-digital conversion circuit are mounted on the signal processing circuit board.
  • optical flexible board is fixed on the signal processing circuit board by FPC or by soldering.
  • the optical module is an SFP optical module, a GBIC optical module, an XFP optical module, an SFF optical module, a XPAK optical module, or an SFP+ optical module.
  • the outer casing includes a casing body and an unlocking structural member fixed to the casing body.
  • the housing body is made of a metal material.
  • the digital-to-analog conversion circuit, the light source control circuit, the electro-optical conversion unit, the photoelectric conversion unit, the signal filter amplification circuit, and the analog-to-digital conversion circuit in the optical fiber sensor are mounted on the circuit board, and the circuit board is mounted Installed inside the enclosure. Therefore, the control of the fiber sensor and the modularization of the acquisition circuit are realized, so that the structure of the fiber sensor is simple and the cost is low, so that the application system using the fiber sensor is simple in structure and low in cost.
  • the housing body is made of a metal material, it has a shielding effect and is used in the field of sensors to improve the anti-interference ability of the analog circuit.
  • FIG. 1 is a schematic structural diagram of an optical module according to an embodiment of the present invention.
  • an embodiment of the present invention provides an optical module for a fiber optic sensor, the optical module including a housing 11 , a circuit board 12 mounted in the housing 11 , and sequentially mounted on the circuit board 12 . Electrically connected The digital-to-analog conversion circuit 121, the light source control circuit 122, and the electro-optic conversion unit 123, the sequentially-connected photoelectric conversion unit 124, the signal filter amplification circuit 125, and the analog-to-digital conversion circuit 126 mounted on the circuit board 12, and mounted on the circuit board 12 The circuit interface 127 is electrically connected to the digital-to-analog conversion circuit 121 and the analog-to-digital conversion circuit 126, respectively.
  • the circuit board 12 may be a rigid circuit board, and may also include an optical soft board and a signal processing circuit board, wherein the electro-optical conversion unit 123 and the photoelectric conversion unit 124 are mounted on the optical soft board, and the digital mode
  • the conversion circuit 121, the light source control circuit 122, the signal filter amplifying circuit 125, and the analog-to-digital conversion circuit 126 are mounted on the signal processing circuit board. Mounting the electro-optic conversion unit 123 and the photoelectric conversion unit 124 on the optical flexible board makes the structural design of the optical module simpler and more flexible.
  • the optical soft board can be attached to the signal processing board by FPC or by soldering.
  • the optical module may be a small package pluggable (Small Form-factor)
  • Pluggable, SFP Optical modules, SFP optical modules comply with the Multi-Source Agreement (MSA), have a uniform interface standard, and have the advantages of small size and low power consumption.
  • the interface connectors and devices that work with SFP optical modules are also very common.
  • the optical module in the embodiment of the present invention may also be a GBIC optical module, an XFP optical module, an SFF optical module, an XPAK optical module, or an SFP+ optical module.
  • the circuit interface 127 is that the external circuit interface of the entire optical module is connected to an external device through the circuit interface, and the optical module can be powered.
  • the digital control signal input from the circuit interface is converted into an analog signal by the analog-to-digital conversion circuit 126, and then The optical signal intensity of the electro-optical conversion unit 123 is controlled by the light source control circuit 122.
  • After the optical signal passes through the optical fiber sensor it is converted into an electrical signal by the photoelectric conversion unit 124, and after being filtered and amplified by the signal filtering and amplifying circuit 125, the analog-to-digital conversion circuit 126
  • the analog electrical signal is converted to a digital signal and output through a circuit interface 127 which characterizes the received optical signal strength.
  • the optical module provided by the embodiment of the present invention can be applied to a measurement system using a fiber optic sensor.
  • the circuit interface 127 can be a universal standard interface, so it can be easily integrated into other systems.
  • the housing 11 of the optical module provided by the embodiment of the invention includes a housing body and an unlocking structural member fixed to the housing body. Unlocking the structural parts facilitates the insertion and removal of the optical module.
  • the housing body may be made of a metal material, so that the housing has a shielding effect, and is used in the field of sensors to improve the anti-interference ability of the analog circuit.
  • the digital-to-analog conversion circuit, the light source control circuit, the electro-optical conversion unit, the photoelectric conversion unit, the signal filter amplification circuit, and the analog-to-digital conversion circuit in the optical fiber sensor are mounted on the circuit board, and The board is mounted inside the housing.
  • the control of the optical fiber sensor and the modularization of the acquisition circuit are realized, so that the structure of the optical fiber sensor is simple and the cost is low, so that the application system using the optical fiber sensor is simple in structure and low in cost.
  • the housing body is made of a metal material, it is used in the field of sensors to improve the anti-interference ability of the analog circuit.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

一种光模块，光模块用于光纤传感器，光模块包括外壳（11）、安装在外壳（11）内的电路板（12）、安装在电路板（12）上的依次电连接的数模转换电路（121）、光源控制电路（122）和电光转换单元（123），安装在电路板（12）上的依次电连接的光电转换单元（124）、信号滤波放大电路（125）和模数转换电路（126），以及安装在电路板（12）上的，分别与数模转换电路（121）和模数转换电路（126）电连接的电路接口（127）。该光模块实现了光纤传感器的控制和采集电路的模块化，从而使光纤传感器的结构简单，成本低，从而也使采用光纤传感器的应用系统结构简单，成本低。

Description

说明书 发明名称：一种光模块
技术领域
[0001] 本发明属于光纤传感器领域， 尤其涉及一种用于光纤传感器的光模块。
背景技术
[0002] 光纤传感器作为一种新型的传感器， 具有极高的探测精度和灵敏度， 同吋它还 具有成本低， 抗干扰能力强， 可移植和可扩展性好的优点， 因此正在越来越广 泛的被应用到温度和压力的测量方案中。 例如光纤传感器可以用于将微弱的振 动信号 （例如呼吸和心跳产生的机械冲击信号） 转化成光信号， 从而可以采集 生理信号， 例如呼吸信号和 /或心跳信号。 另外， 光纤传感器也可以用于检测传 感器表面的压力变化产生的光信号变化， 例如光强、 波长、 调制频率、 相位等 变化， 从而可以用于判断用户的坐姿。 然而， 现有的光纤传感器的控制和采集 电路不是模块化的， 因此导致光纤传感器的结构复杂， 成本高， 从而也导致了 采用光纤传感器的应用系统结构复杂， 成本高。
技术问题
[0003] 本发明的目的在于提供一种光模块， 旨在解决现有的光纤传感器的控制和采集 电路不是模块化的， 因此导致光纤传感器以及采用光纤传感器的应用系统的结 构复杂， 成本高的问题。
问题的解决方案
技术解决方案
[0004] 本发明提供了一种光模块， 所述光模块用于光纤传感器， 所述光模块包括外壳 、 安装在外壳内的电路板、 安装在电路板上的依次电连接的数模转换电路、 光 源控制电路和电光转换单元， 安装在电路板上的依次电连接的光电转换单元、 信号滤波放大电路和模数转换电路， 以及安装在电路板上的， 分别与数模转换 电路和模数转换电路电连接的电路接口。
[0005] 进一步地， 所述电路板是一块硬性线路板。
[0006] 进一步地， 所述电路板包括光学软板和信号处理电路板， 其中电光转换单元和 光电转换单元安装在光学软板上， 数模转换电路、 光源控制电路、 信号滤波放 大电路和模数转换电路安装在信号处理电路板上。
[0007] 进一步地， 所述光学软板通过 FPC或者通过焊接的方式固定在所述信号处理电 路板上。
[0008] 进一步地， 所述光模块是 SFP光模块、 GBIC光模块、 XFP光模块、 SFF光模块 、 XPAK光模块或 SFP+光模块。
[0009] 进一步地， 所述外壳包括壳体本体和固定在壳体本体上的解锁结构件。
[0010] 进一步地， 所述壳体本体是金属材料制成。
发明的有益效果
有益效果
[0011] 在本发明中， 由于将光纤传感器中的数模转换电路、 光源控制电路、 电光转换 单元、 光电转换单元、 信号滤波放大电路和模数转换电路安装在电路板上， 并 将电路板安装在外壳内。 因此实现了光纤传感器的控制和采集电路的模块化， 从而使光纤传感器的结构简单， 成本低， 从而也使采用光纤传感器的应用系统 结构简单， 成本低。 另外， 由于所述壳体本体是金属材料制成， 因此具有屏蔽 效果， 用于传感器领域吋， 可以提高模拟电路的抗干扰能力。
对附图的简要说明
附图说明
[0012] 图 1是本发明实施例提供的光模块结构示意图。
实施该发明的最佳实施例
本发明的最佳实施方式
[0013] 为了使本发明的目的、 技术方案及有益效果更加清楚明白， 以下结合附图及实 施例， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅 仅用以解释本发明， 并不用于限定本发明。
[0014] 为了说明本发明所述的技术方案， 下面通过具体实施例来进行说明。
[0015] 请参阅图 1， 本发明实施例提供了一种光模块， 其用于光纤传感器， 该光模块 包括外壳 11、 安装在外壳 11内的电路板 12、 安装在电路板 12上的依次电连接的 数模转换电路 121、 光源控制电路 122和电光转换单元 123， 安装在电路板 12上的 依次电连接的光电转换单元 124、 信号滤波放大电路 125和模数转换电路 126， 以 及安装在电路板 12上的， 分别与数模转换电路 121和模数转换电路 126电连接的 电路接口 127。
[0016] 本发明实施例中， 电路板 12可以是一块硬性线路板， 也可以包括光学软板和信 号处理电路板， 其中电光转换单元 123和光电转换单元 124安装在光学软板上， 数模转换电路 121、 光源控制电路 122、 信号滤波放大电路 125和模数转换电路 12 6安装在信号处理电路板上。 将电光转换单元 123和光电转换单元 124安装在光学 软板上可以让光模块的结构设计更简单灵活。 光学软板可以通过 FPC或者通过焊 接的方式固定在信号处理电路板上。
[0017] 本发明实施例中， 光模块可以是小封装可插拔 （Small Form-factor
Pluggable, SFP) 光模块， SFP光模块符合多源协议 （MSA) ， 具有统一的接口 标准， 同吋具有体积小， 功耗小的优点， 与 SFP光模块配合的接口连接器和设备 也十分通用。 当然， 本发明实施例中的光模块也可以是 GBIC光模块、 XFP光模 块、 SFF光模块、 XPAK光模块或 SFP+光模块。
[0018] 电路接口 127是整个光模块对外的电路接口通过该电路接口与外部设备连接， 可以给光模块供电， 从该电路接口输入的数字控制信号经过模数转换电路 126转 换成模拟信号， 然后经光源控制电路 122来控制电光转换单元 123的光信号强度 ， 光信号通过光纤传感器后， 被光电转换单元 124转换成电信号， 经过信号滤波 放大电路 125滤波放大后， 被模数转换电路 126将模拟电信号转换成数字信号， 并通过电路接口 127输出， 输出的数字信号表征接收到的光信号强度。 基于此原 理， 本发明实施例提供的光模块可以应用到利用光纤传感器的测量系统中。
[0019] 本发明实施例中， 电路接口 127可以是通用的标准接口， 因此可方便集成到其 他系统中。
[0020] 本发明实施例提供的光模块的外壳 11包括壳体本体和固定在壳体本体上的解锁 结构件。 解锁结构件方便光模块插拔。 所述壳体本体可以是金属材料制成， 从 而使壳体具有屏蔽效果， 用于传感器领域吋， 可以提高模拟电路的抗干扰能力 [0021] 在本发明实施例中， 由于将光纤传感器中的数模转换电路、 光源控制电路、 电 光转换单元、 光电转换单元、 信号滤波放大电路和模数转换电路安装在电路板 上， 并将电路板安装在外壳内。 因此实现了光纤传感器的控制和采集电路的模 块化， 从而使光纤传感器的结构简单， 成本低， 从而也使采用光纤传感器的应 用系统结构简单， 成本低。 另外， 由于所述壳体本体是金属材料制成， 因此用 于传感器领域吋， 可以提高模拟电路的抗干扰能力。
[0022] 以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发明的 精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明的保 护范围之内。

Claims

权利要求书
[权利要求 1] 一种光模块， 其特征在于， 所述光模块用于光纤传感器， 所述光模块 包括外壳、 安装在外壳内的电路板、 安装在电路板上的依次电连接的 数模转换电路、 光源控制电路和电光转换单元， 安装在电路板上的依 次电连接的光电转换单元、 信号滤波放大电路和模数转换电路， 以及 安装在电路板上的， 分别与数模转换电路和模数转换电路电连接的电 路接口。
[权利要求 2] 如权利要求 1所述的光模块， 其特征在于， 所述电路板是一块硬性线 路板。
[权利要求 3] 如权利要求 1所述的光模块， 其特征在于， 所述电路板包括光学软板 和信号处理电路板， 其中电光转换单元和光电转换单元安装在光学软 板上， 数模转换电路、 光源控制电路、 信号滤波放大电路和模数转换 电路安装在信号处理电路板上。
[权利要求 4] 如权利要求 3所述的光模块， 其特征在于， 所述光学软板通过 FPC或 者通过焊接的方式固定在所述信号处理电路板上。
[权利要求 5] 如权利要求 1所述的光模块， 其特征在于， 所述光模块是 SFP光模块
、 GBIC光模块、 XFP光模块、 SFF光模块、 XPAK光模块或 SFP+光模 块。
[权利要求 6] 如权利要求 1所述的光模块， 其特征在于， 所述外壳包括壳体本体和 固定在壳体本体上的解锁结构件。
[权利要求 7] 如权利要求 6所述的光模块， 其特征在于， 所述壳体本体是金属材料 制成。
PCT/CN2017/073527 2016-04-06 2017-02-14 一种光模块 WO2017173886A1 (zh)

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CN113567781A (zh) * 2021-07-17 2021-10-29 深圳市志奋领科技有限公司 一种光电传感器抗干扰方法及系统
CN114383641B (zh) * 2022-01-17 2024-03-05 欧梯恩智能科技(苏州)有限公司 一种光传感解调模块及光传感系统

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