Optical fiber displacement sensor, intensity modulation type sensor system formed by same and application method of system
A displacement sensor and intensity modulation technology, applied in instruments, optical devices, measurement devices, etc., can solve the problem of unusable optical fiber displacement sensors, and achieve the effects of reducing environmental interference, improving measurement accuracy, and improving sensitivity
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Embodiment 1
[0042] Such as figure 1As shown, the transmission-type intensity modulation optical fiber displacement sensor includes a fixed optical fiber and a moving optical fiber corresponding to the fixed optical fiber, and the fixed optical fiber and the moving optical fiber are both composed of a cladding and a core embedded in the cladding. A light barrier is provided between the optical fiber and the moving optical fiber. The light barrier is provided with a light-transmitting hole for the light source to transmit from the core of the fixed optical fiber to the core of the moving optical fiber. There are two light barriers, which are respectively arranged on The fixed fiber and the moving fiber are adjacent to the two cross-sections.
[0043] by figure 1 The transmissive intensity-modulated optical fiber displacement sensor shown is used to form a image 3 The sensor system based on the transmission intensity modulation optical fiber displacement sensor shown, its system archite...
Embodiment 2
[0045] Such as figure 1 As shown, the transmission-type intensity modulation optical fiber displacement sensor includes a fixed optical fiber and a moving optical fiber corresponding to the fixed optical fiber, and the fixed optical fiber and the moving optical fiber are both composed of a cladding and a core embedded in the cladding. A light barrier is provided between the optical fiber and the moving optical fiber. The light barrier is provided with a light-transmitting hole for the light source to transmit from the core of the fixed optical fiber to the core of the moving optical fiber. There are two light barriers, which are respectively arranged on The fixed fiber and the moving fiber are adjacent to the two cross-sections.
[0046] by figure 1 The transmissive intensity-modulated optical fiber displacement sensor shown is used to form a Figure 4 The sensor system based on the transmission intensity modulation optical fiber displacement sensor shown, its system archi...
Embodiment 3
[0048] Such as figure 2 As shown, the optical fiber displacement sensor perpendicular to the axial direction includes a fixed optical fiber and a moving optical fiber corresponding to the fixed optical fiber, and the fixed optical fiber and the moving optical fiber are both composed of a cladding and a core embedded in the cladding. A light barrier is provided between the fixed optical fiber and the moving optical fiber, and the light insulating plate is provided with a light transmission hole for transmitting the light source from the core of the fixed optical fiber into the core of the moving optical fiber. The two cross-sections are respectively provided with lenses, and at this time, the two light barriers are respectively arranged on the two adjacent cross-sections of the two lenses.
[0049] by figure 2 The optical fiber displacement sensor that moves vertically to the axis is shown to form a image 3 The sensor system based on the axial and vertical moving optical f...
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