WO2020206836A1 - Conical optical fiber acceleration sensor system - Google Patents

Conical optical fiber acceleration sensor system Download PDF

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Publication number
WO2020206836A1
WO2020206836A1 PCT/CN2019/091701 CN2019091701W WO2020206836A1 WO 2020206836 A1 WO2020206836 A1 WO 2020206836A1 CN 2019091701 W CN2019091701 W CN 2019091701W WO 2020206836 A1 WO2020206836 A1 WO 2020206836A1
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WIPO (PCT)
Prior art keywords
optical fiber
acceleration sensor
sensor system
cone
coupler
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PCT/CN2019/091701
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French (fr)
Chinese (zh)
Inventor
刘奇
陈绍杰
柴敬
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山东科技大学
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Publication of WO2020206836A1 publication Critical patent/WO2020206836A1/en
Priority to ZA2021/01598A priority Critical patent/ZA202101598B/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/093—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by photoelectric pick-up
    • 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
    • G01D5/35306—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 using an interferometer arrangement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/03—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses by using non-electrical means

Definitions

  • the invention relates to the field of sensor measurement, in particular to a cone optical fiber acceleration sensor system.
  • inclinometers used at home and abroad are the use of fluxgate sensors or mechanical gyroscopes as angular velocity sensors combined with accelerometers to measure inclination and azimuth.
  • this type of inclinometer has disadvantages such as low measurement accuracy, short instrument life, untimely data processing, and inability to monitor in severe weather such as heavy rain, which seriously affects the efficiency of underground deformation monitoring in the coal mine and prevents the monitoring personnel from knowing the inside of the coal mine in time The deformation status.
  • the purpose of the present invention is to provide a cone optical fiber acceleration sensor system, which has the beneficial effects of the sensitivity and accuracy of the cone optical fiber acceleration sensor system.
  • the embodiment of the present invention provides a cone-shaped optical fiber acceleration sensor system, including: a protective shell, an elastic base layer, a light source, a circulator, a coupler, an optical fiber phase modulator ⁇ demodulator, an isolator, and a photodetector;
  • the elastic base layer is arranged in the protective shell to divide the cavity in the protective shell into two upper and lower sub-cavities, and the upper surface and the lower surface of the elastic base layer are respectively provided with sensing optical fiber components for detecting deformation thereof
  • the sensing optical fiber assembly is respectively connected to the optical fiber phase modulator ⁇ demodulator, the light source is coupled to the circulator, and the circulator is coupled to the coupler and the photodetector respectively,
  • the coupler is respectively connected to the isolator and the optical fiber phase modulator ⁇ demodulator, and the isolator is coupled to the photodetector;
  • the end of the sensing fiber assembly is provided with a reflective layer, the monochromatic light generated by the light source is divided into two beams of equal intensity through the coupler, and the two beams of light are reflected by the reflective layer and then pass through the coupling again. And pass through the isolator to the photodetector.
  • the reflective layer is a coating layer.
  • the optical fiber phase modulator ⁇ demodulator is a PZT modulator ⁇ demodulator.
  • the sensing optical fiber assembly includes a compliant cylinder, a sensitive mass and an optical fiber; the compliant cylinder is connected to the sensitive mass, and the sensitive mass is connected to The optical fiber coupling;
  • Both ends of the optical fiber are coated with the reflective layer.
  • the sensitive mass is in the shape of a triangular pyramid, and the cone tip of the sensitive mass is in contact with the optical fiber.
  • an opening for connecting the cavity with the outside is provided on the protective shell.
  • the outer contour of the protective shell is in the shape of a rectangular parallelepiped block.
  • a ring of clamping grooves is provided on the inner wall of the cavity, and the edge of the elastic base layer is clamped in the clamping grooves.
  • the elastic base layer is in the shape of a rectangular plate.
  • glue is arranged in the slot.
  • the present invention has the beneficial effects of improving detection accuracy and sensitivity.
  • the present invention divides the cavity in the protective shell into two upper and lower sub-cavities by arranging an elastic base layer in the protective shell.
  • the upper surface of the elastic base layer is The lower surface is respectively provided with sensing fiber components for detecting its deformation, the sensing fiber components are respectively connected to the optical fiber phase modulator ⁇ demodulator, the light source is coupled to the circulator, and the circulator is respectively Coupled with the coupler and the photodetector, the coupler is respectively connected with the isolator and the optical fiber phase modulator ⁇ demodulator, and the isolator is coupled with the photodetector;
  • the end of the sensing optical fiber assembly is provided with a reflective layer, the monochromatic light generated by the light source is divided into two beams of equal intensity through the coupler, and the two beams of light are reflected by the reflective layer and then pass through the coupler again , And pass through the isolator to reach the photodetector, which
  • Fig. 1 is a schematic diagram of a structure of a cone-shaped optical fiber acceleration sensor system in some embodiments of the present invention.
  • Figure 2 is a schematic diagram of a cone-shaped optical fiber acceleration sensor system in some embodiments of the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, “plurality” means two or more than two, unless specifically defined otherwise.
  • the "on" or “under” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • FIG. 1 is a structural diagram of a cone-shaped optical fiber acceleration sensor system in some embodiments of the present invention.
  • the cone-shaped optical fiber acceleration sensor system includes a protective shell 10, an elastic base layer 50, a light source 80, a circulator 70, a coupler 30, an optical fiber phase modulator/demodulator 20, an isolator 90, and a photodetector 100.
  • the elastic base layer 50 is arranged in the protective shell 10 to divide the cavity in the protective shell 10 into two upper and lower sub-cavities, and the upper surface and the lower surface of the elastic base layer 50 are respectively provided for detecting its deformation
  • the sensing fiber assembly 40 is connected to the optical fiber phase modulator ⁇ demodulator 20, the light source 80 is coupled to the circulator 70, and the circulator 70 is connected to the
  • the coupler 30 and the photodetector 100 are coupled and connected.
  • the coupler 30 is respectively connected with the isolator 90 and the optical fiber phase modulator ⁇ demodulator 20.
  • the isolator 90 is connected with the photodetector 100. Coupling connection
  • the end of the sensing fiber assembly 40 is provided with a reflective layer, the monochromatic light generated by the light source 80 is divided into two beams of equal intensity through the coupler 30, and the two beams of light are reflected by the reflective layer and then again Pass through the coupler 30 and pass through the isolator 90 to reach the photodetector 100.
  • the cone optical fiber acceleration sensor system includes a support mechanism 60, the support structure passes through the perforation on the elastic base layer 50, the light source 80, the circulator 70, the coupler 30, the optical fiber phase modulator ⁇ demodulator 20, the isolation Both the detector 90 and the photodetector 100 are arranged on the direct mechanism 60.
  • the reflective layer is a coating layer.
  • the optical fiber phase modulator ⁇ demodulator 20 includes a PZT (piezoelectric ceramic transducer) modulator ⁇ demodulator, or in other words, a PZT modulator 22 and an optical fiber demodulator 21.
  • PZT piezoelectric ceramic transducer
  • the sensing optical fiber assembly 40 includes a compliant cylinder, a sensitive mass, and an optical fiber; the compliant cylinder is connected to the sensitive mass, and the sensitive mass is coupled to the sensing fiber; two of the optical fiber The end is coated with the reflective layer.
  • the sensitive mass is in the shape of a triangular pyramid, and the cone tip of the sensitive mass is in contact with the optical fiber.
  • the protective shell 10 is provided with an opening for connecting the cavity to the outside.
  • the outer contour of the protective shell 10 is a rectangular parallelepiped block.
  • a circle of clamping grooves is arranged on the inner wall of the cavity, and the edge of the elastic base layer is clamped in the clamping grooves.
  • the elastic base layer has a rectangular plate shape. Adhesive is arranged in the card slot.
  • an elastic base layer is arranged in the protective shell to divide the cavity in the protective shell into two upper and lower sub-cavities.
  • the upper surface and the lower surface of the elastic base layer are respectively provided with sensors for detecting its deformation.
  • Optical fiber components, the sensing optical fiber components are respectively connected to the optical fiber phase modulator ⁇ demodulator, the light source is coupled to the circulator, and the circulator is respectively coupled to the coupler and the photodetector Connected, the coupler is respectively connected to the isolator and the optical fiber phase modulator ⁇ demodulator, the isolator is coupled to the photodetector; the end of the sensing optical fiber assembly is provided with a reflective layer,
  • the monochromatic light generated by the light source is divided into two beams of equal intensity through the coupler, and the two beams of light are reflected by the reflective layer and then pass through the coupler again, and reach the photodetector through the isolator.
  • it has the beneficial effect of improving the detection accuracy and sensitivity.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Pressure Sensors (AREA)
  • Gyroscopes (AREA)

Abstract

Disclosed is a conical optical fiber acceleration sensor system. The system comprises: a protective housing (10), an elastic base layer (50), a light source (80), a circulator (70), a coupler (30), an optical fiber phase modulator/demodulator (20), an isolator (90) and a photoelectric detector (100), wherein the elastic base layer (50) is arranged inside the protective housing (10) to divide a cavity in the protective housing (10) into an upper sub-cavity and a lower sub-cavity; an upper surface and a lower surface of the elastic base layer (50) are respectively provided with sensing optical fiber assemblies (40) for detecting deformation of the elastic base layer; the sensing optical fiber assemblies (40) are respectively connected to the optical fiber phase modulator/demodulator (20); the light source (80) is in coupled connection with the circulator (70); the circulator (70) is respectively in coupled connection with the coupler (30) and the photoelectric detector (100); the coupler (30) is respectively connected to the isolator (90) and the optical fiber phase modulator/demodulator (20); the isolator (90) is in coupled connection with the photoelectric detector (100); tail ends of the sensing optical fiber assemblies (40) are provided with reflecting layers; and monochromatic light generated by the light source (80) is divided, by means of the coupler (30), into two beams of light with equal intensities, and the two beams of light pass through the coupler (30) again after being reflected by the reflecting layers.

Description

锥形体光纤加速度传感器系统Cone optical fiber acceleration sensor system
本公开基于申请号为201910294026.4、申请日为2019年04月12日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。This disclosure is based on a Chinese patent application with an application number of 201910294026.4 and an application date of April 12, 2019, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference into this application.
技术领域Technical field
本发明涉及传感器测领域，具体涉及一种锥形体光纤加速度传感器系统。The invention relates to the field of sensor measurement, in particular to a cone optical fiber acceleration sensor system.
背景技术Background technique
目前国内外使用的测斜仪器主要测量部件是利用磁通门传感器或机械陀螺仪作为角速度传感器与加速度计相结合，测量倾斜角和方位角。然而该类测斜仪存在着测量精度低、仪器使用寿命短、数据处理不及时、暴雨等恶劣天气无法监测等不足，严重影响了煤矿井下内部形变监测的效率，使监测人员不能及时知煤矿内部的变形状况。At present, the main measurement components of inclinometers used at home and abroad are the use of fluxgate sensors or mechanical gyroscopes as angular velocity sensors combined with accelerometers to measure inclination and azimuth. However, this type of inclinometer has disadvantages such as low measurement accuracy, short instrument life, untimely data processing, and inability to monitor in severe weather such as heavy rain, which seriously affects the efficiency of underground deformation monitoring in the coal mine and prevents the monitoring personnel from knowing the inside of the coal mine in time The deformation status.
且，现有技术中的加速度计的检测灵敏度以及精确度均不高。Moreover, the detection sensitivity and accuracy of the accelerometer in the prior art are not high.
因此，现有技术存在缺陷，急需改进。Therefore, the existing technology has shortcomings and urgently needs improvement.
发明内容Summary of the invention
本发明的目的是提供一种锥形体光纤加速度传感器系统，具有锥形体光纤加速度传感器系统的灵敏度以及精确度的有益效果。The purpose of the present invention is to provide a cone optical fiber acceleration sensor system, which has the beneficial effects of the sensitivity and accuracy of the cone optical fiber acceleration sensor system.
本发明实施例提供了一种锥形体光纤加速度传感器系统，包括：保护壳、弹性基层、光源、环形器、耦合器、光纤相位调制\解调器、隔离器、光电探测器；The embodiment of the present invention provides a cone-shaped optical fiber acceleration sensor system, including: a protective shell, an elastic base layer, a light source, a circulator, a coupler, an optical fiber phase modulator\demodulator, an isolator, and a photodetector;
所述弹性基层设置于所述保护壳内以将所述保护壳内的腔体分隔成上下两个子腔，所述弹性基层的上表面和下表面分别设置有用于检测其形变的传感光纤组件，所述传感光纤组件分别与所述光纤相位调制\解调器连接，所述光源与所述环形器耦合连接，所述环形器分别与所述耦合器以及所述光电探测器耦合连接，所述耦合器分别与所述隔离器以及所述光纤相位调制\解调器连接，所述隔离器与所述光电探测器耦合连接；The elastic base layer is arranged in the protective shell to divide the cavity in the protective shell into two upper and lower sub-cavities, and the upper surface and the lower surface of the elastic base layer are respectively provided with sensing optical fiber components for detecting deformation thereof The sensing optical fiber assembly is respectively connected to the optical fiber phase modulator\demodulator, the light source is coupled to the circulator, and the circulator is coupled to the coupler and the photodetector respectively, The coupler is respectively connected to the isolator and the optical fiber phase modulator\demodulator, and the isolator is coupled to the photodetector;
所述传感光纤组件的末端设置有反射层，所述光源产生的单色光经过所述耦合器分成强度相等的两束光，所述两束光经过反射层反射回来后再次经过所述耦合器，并经过所述隔离器到达所述光电探测器中。The end of the sensing fiber assembly is provided with a reflective layer, the monochromatic light generated by the light source is divided into two beams of equal intensity through the coupler, and the two beams of light are reflected by the reflective layer and then pass through the coupling again. And pass through the isolator to the photodetector.
在本发明所述的锥形体光纤加速度传感器系统中，所述反射层为镀膜层。In the cone optical fiber acceleration sensor system of the present invention, the reflective layer is a coating layer.
在本发明所述的锥形体光纤加速度传感器系统中，所述光纤相位调制\解调器为PZT调制\解调器。In the cone optical fiber acceleration sensor system of the present invention, the optical fiber phase modulator\demodulator is a PZT modulator\demodulator.
在本发明所述的锥形体光纤加速度传感器系统中，所述传感光纤组件包括顺变柱体、敏感质量块以及光纤；所述顺变柱体与所述敏感质量块连接，所述敏感质量块与所述光纤耦合；In the tapered optical fiber acceleration sensor system of the present invention, the sensing optical fiber assembly includes a compliant cylinder, a sensitive mass and an optical fiber; the compliant cylinder is connected to the sensitive mass, and the sensitive mass is connected to The optical fiber coupling;
所述光纤的两端涂布有所述反射层。Both ends of the optical fiber are coated with the reflective layer.
在本发明所述的锥形体光纤加速度传感器系统中，所述敏感质量块呈三棱锥状，且所述敏感质量块的锥顶与所述光纤接触。In the tapered optical fiber acceleration sensor system of the present invention, the sensitive mass is in the shape of a triangular pyramid, and the cone tip of the sensitive mass is in contact with the optical fiber.
在本发明所述的锥形体光纤加速度传感器系统中，所述保护壳上设置有用于将所述腔体与外界相连的开口。In the cone optical fiber acceleration sensor system of the present invention, an opening for connecting the cavity with the outside is provided on the protective shell.
在本发明所述的锥形体光纤加速度传感器系统中，所述保护壳的外轮廓呈长方体块状。In the tapered optical fiber acceleration sensor system of the present invention, the outer contour of the protective shell is in the shape of a rectangular parallelepiped block.
在本发明所述的锥形体光纤加速度传感器系统中，所述腔体的内壁上设置有一圈卡槽，所述弹性基层的边缘卡接在所述卡槽中。In the tapered optical fiber acceleration sensor system of the present invention, a ring of clamping grooves is provided on the inner wall of the cavity, and the edge of the elastic base layer is clamped in the clamping grooves.
在本发明所述的锥形体光纤加速度传感器系统中，所述弹性基层呈矩形板状。In the tapered optical fiber acceleration sensor system of the present invention, the elastic base layer is in the shape of a rectangular plate.
在本发明所述的锥形体光纤加速度传感器系统中，所述卡槽中设置有黏胶。In the tapered optical fiber acceleration sensor system of the present invention, glue is arranged in the slot.
本发明具有提高检测精确度以及灵敏度的有益效果本发明通过将弹性基层设置于所述保护壳内以将所述保护壳内的腔体分隔成上下两个子腔，所述弹性基层的上表面和下表面分别设置有用于检测其形变的传感光纤组件，所述传感光纤组件分别与所述光纤相位调制\解调器连接，所述光源与所述环形器耦合连接，所述环形器分别与所述耦合器以及所述光电探测器耦合连接，所述耦合器分别与所述隔离器以及所述光纤相位调制\解调器连接，所述隔离器与所述光电探测器耦合连接；所述传感光纤组件的末端设置有反射层，所述光源产生的单色光经过所述耦合器分成强度相等的两束光，所述两束光经过反射层反射回来 后再次经过所述耦合器，并经过所述隔离器到达所述光电探测器中，具有提高检测精确度以及灵敏度的有益效果。The present invention has the beneficial effects of improving detection accuracy and sensitivity. The present invention divides the cavity in the protective shell into two upper and lower sub-cavities by arranging an elastic base layer in the protective shell. The upper surface of the elastic base layer is The lower surface is respectively provided with sensing fiber components for detecting its deformation, the sensing fiber components are respectively connected to the optical fiber phase modulator\demodulator, the light source is coupled to the circulator, and the circulator is respectively Coupled with the coupler and the photodetector, the coupler is respectively connected with the isolator and the optical fiber phase modulator\demodulator, and the isolator is coupled with the photodetector; The end of the sensing optical fiber assembly is provided with a reflective layer, the monochromatic light generated by the light source is divided into two beams of equal intensity through the coupler, and the two beams of light are reflected by the reflective layer and then pass through the coupler again , And pass through the isolator to reach the photodetector, which has the beneficial effects of improving detection accuracy and sensitivity.
图说明Figure description
图1是本发明一些实施例中的锥形体光纤加速度传感器系统的一种结构示意图。Fig. 1 is a schematic diagram of a structure of a cone-shaped optical fiber acceleration sensor system in some embodiments of the present invention.
图2是本发明一些实施例中的锥形体光纤加速度传感器系统的一种原理图。Figure 2 is a schematic diagram of a cone-shaped optical fiber acceleration sensor system in some embodiments of the present invention.
具体实施方式detailed description
下面详细描述本发明的实施方式，所述实施方式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方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。The following describes the embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The following embodiments described with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be understood as a limitation to the present invention.
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" and other directions or The positional relationship is based on the position or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more than two, unless specifically defined otherwise.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relationship. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上” 或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present invention, unless otherwise clearly defined and defined, the "on" or "under" of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them. Moreover, "above", "above" and "above" the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature. The "below", "below" and "below" the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。The following disclosure provides many different embodiments or examples for realizing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. In addition, the present invention may repeat reference numerals and/or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.
请参照图1以及图2，图1是本发明一些实施例中的一种锥形体光纤加速度传感器系统的结构图。该锥形体光纤加速度传感器系统，包括：保护壳10、弹性基层50、光源80、环形器70、耦合器30、光纤相位调制\解调器20、隔离器90、光电探测器100。Please refer to FIG. 1 and FIG. 2. FIG. 1 is a structural diagram of a cone-shaped optical fiber acceleration sensor system in some embodiments of the present invention. The cone-shaped optical fiber acceleration sensor system includes a protective shell 10, an elastic base layer 50, a light source 80, a circulator 70, a coupler 30, an optical fiber phase modulator/demodulator 20, an isolator 90, and a photodetector 100.
其中，该弹性基层50设置于所述保护壳10内以将所述保护壳10内的腔体分隔成上下两个子腔，所述弹性基层50的上表面和下表面分别设置有用于检测其形变的传感光纤组件40，所述传感光纤组件40分别与所述光纤相位调制\解调器20连接，所述光源80与所述环形器70耦合连接，所述环形器70分别与所述耦合器30以及所述光电探测器100耦合连接，所述耦合器30分别与所述隔离器90以及所述光纤相位调制\解调器20连接，所述隔离器90与所述光电探测器100耦合连接；Wherein, the elastic base layer 50 is arranged in the protective shell 10 to divide the cavity in the protective shell 10 into two upper and lower sub-cavities, and the upper surface and the lower surface of the elastic base layer 50 are respectively provided for detecting its deformation The sensing fiber assembly 40 is connected to the optical fiber phase modulator\demodulator 20, the light source 80 is coupled to the circulator 70, and the circulator 70 is connected to the The coupler 30 and the photodetector 100 are coupled and connected. The coupler 30 is respectively connected with the isolator 90 and the optical fiber phase modulator\demodulator 20. The isolator 90 is connected with the photodetector 100. Coupling connection
其中，该传感光纤组件40的末端设置有反射层，所述光源80产生的单色光经过所述耦合器30分成强度相等的两束光，所述两束光经过反射层反射回来后再次经过所述耦合器30，并经过所述隔离器90到达所述光电探测器100中。Wherein, the end of the sensing fiber assembly 40 is provided with a reflective layer, the monochromatic light generated by the light source 80 is divided into two beams of equal intensity through the coupler 30, and the two beams of light are reflected by the reflective layer and then again Pass through the coupler 30 and pass through the isolator 90 to reach the photodetector 100.
当系统受到惯性作用时，加速度作用在弹性基层50上，传感光纤组件40的相位发生变化，两个相位等幅反向。但是对于其他的信号，比如温度影响、 环境噪声等，两个相位等幅同向，由此产生一个差分信号，通过对这个差分信号进行解调得出加速度值。When the system is subjected to inertia, acceleration acts on the elastic base layer 50, and the phase of the sensing optical fiber assembly 40 changes, and the two phases are equal in amplitude and reversed. But for other signals, such as temperature effects, environmental noise, etc., the two phases are equal in amplitude and in the same direction, thereby generating a differential signal, and the acceleration value is obtained by demodulating the differential signal.
其中，该锥形体光纤加速度传感器系统包括一支架机构60，该支架结构穿过该弹性基层50上的穿孔，该光源80、环形器70、耦合器30、光纤相位调制\解调器20、隔离器90、光电探测器100均设置于该直接机构60上。Wherein, the cone optical fiber acceleration sensor system includes a support mechanism 60, the support structure passes through the perforation on the elastic base layer 50, the light source 80, the circulator 70, the coupler 30, the optical fiber phase modulator\demodulator 20, the isolation Both the detector 90 and the photodetector 100 are arranged on the direct mechanism 60.
其中，在本发明所述的锥形体光纤加速度传感器系统中，所述反射层为镀膜层。Wherein, in the tapered fiber acceleration sensor system of the present invention, the reflective layer is a coating layer.
其中，所述光纤相位调制\解调器20包括PZT(piezoelectric ceramic transducer)调制\解调器，或者说包括PZT调制器22以及光纤解调器21。Wherein, the optical fiber phase modulator\demodulator 20 includes a PZT (piezoelectric ceramic transducer) modulator\demodulator, or in other words, a PZT modulator 22 and an optical fiber demodulator 21.
其中，该传感光纤组件40包括顺变柱体、敏感质量块以及光纤；所述顺变柱体与所述敏感质量块连接，所述敏感质量块与所述传感光纤耦合；所述光纤的两端涂布有所述反射层。Wherein, the sensing optical fiber assembly 40 includes a compliant cylinder, a sensitive mass, and an optical fiber; the compliant cylinder is connected to the sensitive mass, and the sensitive mass is coupled to the sensing fiber; two of the optical fiber The end is coated with the reflective layer.
其中，该敏感质量块呈三棱锥状，且所述敏感质量块的锥顶与所述光纤接触。Wherein, the sensitive mass is in the shape of a triangular pyramid, and the cone tip of the sensitive mass is in contact with the optical fiber.
其中，在一些实施例中，保护壳10上设置有用于将所述腔体与外界相连的开口。Wherein, in some embodiments, the protective shell 10 is provided with an opening for connecting the cavity to the outside.
其中，在一些实施例中，保护壳10的外轮廓呈长方体块状。腔体的内壁上设置有一圈卡槽，所述弹性基层的边缘卡接在所述卡槽中。其中，该弹性基层呈矩形板状。卡槽中设置有黏胶。Among them, in some embodiments, the outer contour of the protective shell 10 is a rectangular parallelepiped block. A circle of clamping grooves is arranged on the inner wall of the cavity, and the edge of the elastic base layer is clamped in the clamping grooves. Wherein, the elastic base layer has a rectangular plate shape. Adhesive is arranged in the card slot.
本发明通过将弹性基层设置于所述保护壳内以将所述保护壳内的腔体分隔成上下两个子腔，所述弹性基层的上表面和下表面分别设置有用于检测其形变的传感光纤组件，所述传感光纤组件分别与所述光纤相位调制\解调器连接，所述光源与所述环形器耦合连接，所述环形器分别与所述耦合器以及所述光电探测器耦合连接，所述耦合器分别与所述隔离器以及所述光纤相位调制\解调器连接，所述隔离器与所述光电探测器耦合连接；所述传感光纤组件的末端设置有反射层，所述光源产生的单色光经过所述耦合器分成强度相等的两束光，所述两束光经过反射层反射回来后再次经过所述耦合器，并经过所述隔离器到达所述光电探测器中，具有提高检测精确度以及灵敏度的有益效果。In the present invention, an elastic base layer is arranged in the protective shell to divide the cavity in the protective shell into two upper and lower sub-cavities. The upper surface and the lower surface of the elastic base layer are respectively provided with sensors for detecting its deformation. Optical fiber components, the sensing optical fiber components are respectively connected to the optical fiber phase modulator\demodulator, the light source is coupled to the circulator, and the circulator is respectively coupled to the coupler and the photodetector Connected, the coupler is respectively connected to the isolator and the optical fiber phase modulator\demodulator, the isolator is coupled to the photodetector; the end of the sensing optical fiber assembly is provided with a reflective layer, The monochromatic light generated by the light source is divided into two beams of equal intensity through the coupler, and the two beams of light are reflected by the reflective layer and then pass through the coupler again, and reach the photodetector through the isolator. In the device, it has the beneficial effect of improving the detection accuracy and sensitivity.
在本说明书的描述中，参考术语“一个实施方式”、“某些实施方式”、“示 意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。In the description of this specification, the description with reference to the terms “one embodiment”, “certain embodiments”, “exemplary embodiments”, “examples”, “specific examples”, or “some examples” etc. means to combine The specific features, structures, materials or characteristics described in the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in an appropriate manner.
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。In summary, although the present invention has been disclosed as above in preferred embodiments, the above-mentioned preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various modifications without departing from the spirit and scope of the present invention. Such changes and modifications, therefore, the protection scope of the present invention is subject to the scope defined by the claims.

Claims (10)

  1. 一种锥形体光纤加速度传感器系统，其特征在于，包括：保护壳、弹性基层、光源、环形器、耦合器、光纤相位调制\解调器、隔离器、光电探测器；A cone-shaped optical fiber acceleration sensor system, which is characterized by including: a protective shell, an elastic base layer, a light source, a circulator, a coupler, an optical fiber phase modulator\demodulator, an isolator, and a photodetector;
    所述弹性基层设置于所述保护壳内以将所述保护壳内的腔体分隔成上下两个子腔，所述弹性基层的上表面和下表面分别设置有用于检测其形变的传感光纤组件，所述传感光纤组件分别与所述光纤相位调制\解调器连接，所述光源与所述环形器耦合连接，所述环形器分别与所述耦合器以及所述光电探测器耦合连接，所述耦合器分别与所述隔离器以及所述光纤相位调制\解调器连接，所述隔离器与所述光电探测器耦合连接；The elastic base layer is arranged in the protective shell to divide the cavity in the protective shell into two upper and lower sub-cavities, and the upper surface and the lower surface of the elastic base layer are respectively provided with sensing optical fiber components for detecting deformation thereof The sensing optical fiber assembly is respectively connected to the optical fiber phase modulator\demodulator, the light source is coupled to the circulator, and the circulator is coupled to the coupler and the photodetector respectively, The coupler is respectively connected to the isolator and the optical fiber phase modulator\demodulator, and the isolator is coupled to the photodetector;
    所述传感光纤组件的末端设置有反射层，所述光源产生的单色光经过所述耦合器分成强度相等的两束光，所述两束光经过反射层反射回来后再次经过所述耦合器，并经过所述隔离器到达所述光电探测器中。The end of the sensing fiber assembly is provided with a reflective layer, the monochromatic light generated by the light source is divided into two beams of equal intensity through the coupler, and the two beams of light are reflected by the reflective layer and then pass through the coupling again. And pass through the isolator to the photodetector.
  2. 根据权利要求1所述的锥形体光纤加速度传感器系统，其特征在于，所述反射层为镀膜层。The cone-shaped optical fiber acceleration sensor system according to claim 1, wherein the reflective layer is a coating layer.
  3. 根据权利要求1所述的锥形体光纤加速度传感器系统，其特征在于，所述光纤相位调制\解调器包括PZT调制\解调器。The cone optical fiber acceleration sensor system according to claim 1, wherein the optical fiber phase modulator\demodulator comprises a PZT modulator\demodulator.
  4. 根据权利要求1所述的锥形体光纤加速度传感器系统，其特征在于，所述传感光纤组件包括顺变柱体、敏感质量块以及传感光纤；所述顺变柱体与所述敏感质量块连接，所述敏感质量块与所述传感光纤耦合；The tapered optical fiber acceleration sensor system according to claim 1, wherein the sensing fiber assembly includes a compliant cylinder, a sensitive mass, and a sensing fiber; the compliant cylinder is connected to the sensitive mass, The sensitive mass is coupled with the sensing fiber;
    所述光纤的两端涂布有所述反射层。Both ends of the optical fiber are coated with the reflective layer.
  5. 根据权利要求4所述的锥形体光纤加速度传感器系统，其特征在于，所述敏感质量块呈三棱锥状，且所述敏感质量块的锥顶与所述光纤接触。The cone-shaped optical fiber acceleration sensor system of claim 4, wherein the sensitive mass is in the shape of a triangular pyramid, and the cone tip of the sensitive mass is in contact with the optical fiber.
  6. 根据权利要求1所述的锥形体光纤加速度传感器系统，其特征在于，所述保护壳上设置有用于将所述腔体与外界相连的开口。The cone-shaped optical fiber acceleration sensor system according to claim 1, wherein the protective shell is provided with an opening for connecting the cavity to the outside.
  7. 根据权利要求6所述的锥形体光纤加速度传感器系统，其特征在于，所述保护壳的外轮廓呈长方体块状。The cone-shaped optical fiber acceleration sensor system according to claim 6, wherein the outer contour of the protective shell is in the shape of a rectangular parallelepiped block.
  8. 根据权利要求1所述的锥形体光纤加速度传感器系统，其特征在于，所述腔体的内壁上设置有一圈卡槽，所述弹性基层的边缘卡接在所述卡槽中。The cone-shaped optical fiber acceleration sensor system according to claim 1, wherein a ring of clamping grooves is provided on the inner wall of the cavity, and the edge of the elastic base layer is clamped in the clamping grooves.
  9. 根据权利要求8所述的锥形体光纤加速度传感器系统，其特征在于，所述弹性基层呈矩形板状。The cone-shaped optical fiber acceleration sensor system according to claim 8, wherein the elastic base layer is in the shape of a rectangular plate.
  10. 根据权利要求8所述的锥形体光纤加速度传感器系统，其特征在于，所述卡槽中设置有黏胶。The cone-shaped optical fiber acceleration sensor system according to claim 8, wherein glue is provided in the slot.
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