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Light sensing system

A light sensing and optical fiber technology, applied in the field of light sensing systems, can solve problems such as low resolution and achieve the effect of improving time resolution

Inactive Publication Date: 2012-07-11
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the deficiency of low resolution of existing magnetic resonance scanners, the present invention provides an optical sensing system

Method used

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Embodiment Construction

[0020] refer to Figure 1~5 , The optical sensing system of the present invention includes a transmitting part and a receiving part. The transmitting part is composed of a pulse power supply, an infrared laser diode, a fiber coupling transmission device and a laser emitting fiber 3, and the pulse power supply, an infrared laser diode, a fiber coupling transmission device and a laser emitting fiber 3 are electrically connected in sequence; the receiving part is composed of an optical fiber receiving end, a signal transmission Optical fiber 4, infrared detector, preamplifier circuit, data collector, and data processing system are composed of optical fiber receiving end, signal transmission optical fiber 4, infrared detector, preamplifier circuit, data collector, and data processing system are electrically connected in turn; laser emission The optical fiber 3 corresponds to the signal transmission optical fiber 4 , and one laser emitting optical fiber 3 corresponds to one signal ...

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Abstract

The invention discloses a light sensing system which is used for solving the technical problem on low resolution of the conventional magnetic resonance scanner. The technical scheme of the invention is as follows: the light sensing system comprises a transmitting part and a receiving part, wherein the transmitting part consists of a pulse power supply, an infrared laser diode, a fiber-optic coupling transfer device and a laser transmitting optical fiber (3); the receiving part consists of an optical fiber receiving end, a signal transmitting optical fiber (4), an infrared detector, a pre-amplifier circuit, a data acquisition device and a data processing system; the laser transmitting optical fiber (3) corresponds to the signal transmitting optical fiber (4); the laser transmitting optical fiber (3) and the signal transmitting optical fiber (4) are alternatively arranged on a line concentration gasket (2) to constitute a visual-center light sensor component Za and a motor center light sensor component Zb. According to the invention, as a light-velocity propagation device is employed, time resolution is increased during the detection.

Description

technical field [0001] The invention relates to the field of sensors, in particular to an optical sensing system. Background technique [0002] In humans and some animals, the brain tissue shows blood oxygen dynamics when the nerves are active, and the use of magnetic resonance imaging (MRI) to obtain brain tissue images during the blood oxygen dynamic process is called functional magnetic resonance imaging (fMRI). Blood flow changes and changes in blood oxygen concentration are collectively referred to as blood oxygen dynamics. When the brain nerves are active, the consumption of glucose and the corresponding aerobic and anaerobic metabolism will increase. Brain tissue responds to the metabolic process, the process of increasing blood flow, with a delay of 1 to 5 seconds. The blood oxygen dynamic response peaks at 4 to 5 seconds, producing regional aerobic hemoglobin (oxyhemoglobin, HbO 2 ), changes in deoxyhemoglobin (deoxyhemoglobin, HbR) concentration, changes in blood...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455A61B5/026
Inventor 史仪凯邓梁袁小庆
Owner NORTHWESTERN POLYTECHNICAL UNIV