Fiber bragg grating sensing system, examining table and medical imaging equipment
By using a fiber grating perception system in medical imaging equipment, the patient's height, weight, position and movement status are automatically identified and measured, and the time waste and error problems caused by manual input in the prior art are solved, achieving high accuracy and intelligence Measurement of signs.
Patent Information
- Application Number
- CN202420870448.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-24
AI Technical Summary
When existing medical imaging equipment recognizes key information such as the patient's height, weight and position, it requires manual input, resulting in wasted time and errors. Especially for patients/infants who cannot stand independently and have malnutrition, the accuracy of physical sign measurement. Sex and safety are difficult to guarantee.
Adopting a fiber grating perception system, including a demodulation module, a main control module and a fiber grating module, the patient's height, weight, position and motion state are automatically identified and measured through multiple independently set fiber grating strings and fiber grating sensing units. .
It realizes automatic identification and measurement of patient key sign information without manual input, improves the intelligence and measurement accuracy of medical imaging equipment, reduces errors, and is suitable for complex electromagnetic environments.
Smart Images
Figure CN222425995U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical imaging, in particular to a fiber grating sensing system, an examination bed and medical imaging equipment. Background Art
[0002] In medical imaging, the patient's height, weight and body position are key information, especially for patients / infants who cannot stand independently or are malnourished. Physical sign measurement is even more important in injury prevention, disease diagnosis, health monitoring, etc. In current mainstream medical imaging equipment, it is usually necessary to measure on-site outside the scanning room using analog measuring devices such as height and weight scales, ultrasonic measuring instruments, and thermometers to identify key information such as the patient's height, weight, and body position, and then the operator still needs to manually enter the information. This method is not only time-consuming, but also prone to errors.
[0003] At present, some technologies related to automatic perception of patient vital signs have also emerged, mainly including the following related technologies:
[0004] 1. Camera: The camera is used to observe the patient's appearance and estimate key information such as height, weight, and imaging position. However, this solution is prone to interference with imaging and cannot accurately estimate weight. At the same time, the measured data is also easily affected by the patient's clothing.
[0005] 2. Pressure sensor: The pressure sensor is embedded under the bed to sense the patient's weight. However, this solution cannot sense the patient's height, body shape and other information, and due to the complex circuit structure, it is difficult to be used in all modes.
[0006] 3. Ultrasonic instrument: By continuously detecting the echo reflected by obstacles after the ultrasonic wave is emitted, the time difference between the emission and reception of the echo is measured, and then the distance is calculated by multiplying the wave speed by the time difference, thereby sensing the patient's height. However, this solution will have errors due to different standing postures and changes in the body.
[0007] It should be noted that the information disclosed in the background technology section of the utility model is only intended to deepen the understanding of the general background technology of the utility model, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Utility Model Content
[0008] The utility model aims to provide a fiber grating sensing system, an examination bed and a medical imaging device, which can automatically identify the physical information such as the height, weight, body position, movement state and the like of the examination object, and is conducive to improving the intelligence of the medical imaging device.
[0009] To achieve the above object, the utility model provides a fiber Bragg grating sensing system for sensing vital signs of an object under examination, wherein the fiber Bragg grating sensing system comprises a demodulation module, a main control module and a fiber Bragg grating module, wherein the fiber Bragg grating module is connected to the demodulation module, and the demodulation module is connected to the main control module;
[0010] The fiber grating module includes a plurality of independently arranged fiber grating strings, each of which includes a plurality of measuring fiber grating sensing units;
[0011] The demodulation module is configured to generate a corresponding measurement demodulation signal and send it to the main control module;
[0012] The main control module is configured to analyze the measurement demodulation signal to obtain vital sign information of the examination object.
[0013] Optionally, the difference between the central wavelengths of any two adjacent measuring fiber grating sensing units in the same fiber grating string is greater than a first preset value.
[0014] Optionally, at least one of the fiber grating strings further includes a reference fiber grating sensing unit.
[0015] Optionally, the multiple fiber grating strings are arranged at intervals along a first direction, and the multiple measurement fiber grating sensing units in the same fiber grating string are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction.
[0016] Optionally, the distance between any two adjacent measuring fiber Bragg grating sensing units in the same fiber Bragg grating string is greater than or equal to a second preset value.
[0017] Optionally, the multiple measuring fiber Bragg grating sensing units in the same fiber Bragg grating string are integrated on the same optical fiber.
[0018] Optionally, the fiber grating module further includes a flexible substrate for carrying the plurality of fiber grating strings.
[0019] In order to achieve the above-mentioned purpose, the utility model also provides an examination bed, which includes a bed body, a flexible substrate and a plurality of independently arranged fiber optic Bragg grating strings, each of which includes a plurality of measuring fiber optic Bragg grating sensor units, the flexible substrate is arranged on the bed body, and each of the measuring fiber optic Bragg grating sensor units is arranged in the flexible substrate.
[0020] Optionally, the multiple fiber grating strings are spaced apart along a first direction of the flexible substrate, and the multiple measuring fiber grating sensing units in the same fiber grating string are spaced apart along a second direction of the flexible substrate, and the first direction is perpendicular to the second direction.
[0021] To achieve the above-mentioned object, the utility model further provides a medical imaging device, wherein the medical imaging device comprises the fiber grating sensing system described in any one of the above items or includes the examination bed described in any one of the above items.
[0022] Compared with the prior art, the fiber grating sensing system, examination bed and medical imaging equipment provided by the utility model have the following beneficial effects:
[0023] The fiber grating sensing system provided by the utility model includes a demodulation module, a main control module and a fiber grating module, wherein the fiber grating module is connected to the demodulation module, and the demodulation module is connected to the main control module; the fiber grating module includes a plurality of independently arranged fiber grating strings, each of which includes a plurality of measuring fiber grating sensing units; the demodulation module is configured to generate a corresponding measuring demodulation signal and send it to the main control module; the main control module is configured to analyze the measuring demodulation signal to obtain the physical sign information of the inspection object. Since the physical sign information such as the height, weight, body position, movement, etc. of the inspection object is closely related to the parameters such as the pressure, stress or deformation sensed by each measuring fiber grating sensing unit in the fiber grating module, the fiber grating sensing system provided by the utility model can automatically identify the physical sign information such as the height information, weight information, body position information, movement information, etc. of the inspection object, and there is no need for the operator to manually input the relevant information, which effectively saves time and avoids errors, thereby facilitating the improvement of the intelligence of medical imaging equipment. In addition, since the multiple fiber grating strings in the fiber grating sensing system provided by the utility model are independently arranged, it is possible to effectively avoid interference between different fiber grating strings, thereby helping to improve the measurement accuracy of the fiber grating sensing system provided by the utility model. In addition, since the fiber grating has the advantages of good flexibility, safe insulation, no heat generation, high temperature resistance, no interaction with the inspection object, no electromagnetic radiation, electromagnetic interference resistance, suitability for complex electromagnetic environments, good electromagnetic compatibility, high measurement accuracy, short response time, etc., by adopting the fiber grating sensing system provided by the utility model, it is possible to effectively ensure the accuracy of the vital sign information of the inspection object obtained, and it will not affect the imaging quality of the medical imaging equipment using the fiber grating sensing system provided by the utility model.
[0024] Since the examination bed and medical imaging equipment provided by the utility model belong to the same inventive concept as the fiber grating sensing system provided by the utility model, the examination bed and medical imaging equipment provided by the utility model have at least all the beneficial effects of the fiber grating sensing system provided by the utility model. For details, please refer to the relevant description of the beneficial effects of the fiber grating sensing system provided by the utility model in the above text. Therefore, the beneficial effects of the examination bed and medical imaging equipment provided by the utility model will not be described one by one here. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A schematic diagram of the block structure of a fiber Bragg grating sensing system provided in one embodiment of the utility model;
[0026] Figure 2 A schematic diagram of the structure of a fiber Bragg grating module in a fiber Bragg grating sensing system provided in one embodiment of the utility model;
[0027] Figure 3 This is a schematic structural diagram of a medical imaging device provided in one embodiment of the utility model.
[0028] The reference numerals are as follows:
[0029] Demodulation module-100;
[0030] Main control module-200;
[0031] Fiber Bragg grating module-300; fiber Bragg grating string-310; measurement fiber Bragg grating sensing unit-311; reference fiber Bragg grating sensing unit-312; flexible substrate-320;
[0032] Examination bed - 400;
[0033] Scanner-500; Scanning chamber-510;
[0034] First direction - D1; second direction - D2. DETAILED DESCRIPTION
[0035] The fiber Bragg grating sensing system, examination bed and medical imaging equipment proposed in the utility model are further described in detail below in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model. Any modification of the structure, change of the proportional relationship or adjustment of the size, under the same or similar conditions as the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. The specific design features of the utility model disclosed herein include, for example, specific size, direction, position and shape, which will be determined in part by the specific environment to be applied and used. Also, in the embodiments described below, sometimes the same reference numerals are used in common between different figures to represent the same parts or parts with the same functions, and their repeated descriptions are omitted. In this specification, similar reference numerals and letters are used to represent similar items, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures. In addition, if the method described herein includes a series of steps, the order of these steps presented herein is not necessarily the only order in which these steps can be performed, and some of the steps described may be omitted and / or some other steps not described herein may be added to the method.
[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The singular forms "a", "an" and "the" include plural referents, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "at least one", the term "at least two" is generally used in a sense including "two or more", and the term "plurality" is generally used in a sense including "at least two".
[0037] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be a connection between the inside of two elements or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the present utility model, unless otherwise clearly stipulated and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0038] The core idea of the utility model is to provide a fiber Bragg grating sensing system, an examination bed and a medical imaging device, which can automatically identify the height information, weight information, body position information, movement information, etc. of the examination object, which is conducive to improving the intelligence of the medical imaging device. It should be noted that, as can be understood by those skilled in the art, the medical imaging device provided by the utility model can be, but is not limited to, a computed tomography device (CT), a positron emission tomography device (PET / CT), a magnetic resonance imaging device (MRI), etc.
[0039] In order to realize the above idea, the utility model provides a fiber grating sensing system for sensing the vital signs of the object under examination. Figure 1 and Figure 2 ,in, Figure 1 A schematic diagram of the block structure of a fiber Bragg grating sensing system provided in one embodiment of the utility model; Figure 2This is a schematic diagram of the structure of a fiber Bragg grating module in a fiber Bragg grating sensing system provided by one embodiment of the utility model. Figure 1 and Figure 2 As shown, the fiber grating sensing system provided by the utility model includes a demodulation module 100, a main control module 200 and a fiber grating module 300, wherein the fiber grating module 300 is connected to the demodulation module 100, and the demodulation module 100 is connected to the main control module 200; the fiber grating module 300 includes a plurality of independently arranged fiber grating strings 310, and each of the fiber grating strings 310 includes a plurality of measurement fiber grating sensing units 311; the demodulation module 100 is configured to generate a corresponding measurement demodulation signal and send it to the main control module 200; the main control module 200 is configured to analyze the measurement demodulation signal to obtain the physical sign information of the inspection object. Specifically, the physical sign information includes at least one of height information, weight information, body position information, and movement information.
[0040] Since the physical information of the subject of the inspection, such as height, weight, body position, and movement, is closely related to the parameters such as pressure, stress, or deformation sensed by each measuring fiber Bragg grating sensing unit 311 in the fiber Bragg grating module 300, the fiber Bragg grating sensing system provided by the utility model can automatically identify the physical information such as height, weight, body position, and movement information of the subject of the inspection, and there is no need for the operator to manually input relevant information, which effectively saves time and avoids errors, thereby helping to improve the intelligence of medical imaging equipment. In addition, since the multiple fiber Bragg grating strings 310 in the fiber Bragg grating sensing system provided by the utility model are independently arranged, it can effectively avoid interference between different fiber Bragg grating strings 310, thereby helping to improve the measurement accuracy of the fiber Bragg grating sensing system provided by the utility model. In addition, since the fiber grating has the advantages of good flexibility, safe insulation, no heat generation, high temperature resistance, no interaction with the inspection object, no electromagnetic radiation, resistance to electromagnetic interference, suitability for complex electromagnetic environments, good electromagnetic compatibility, high measurement accuracy, and short response time, the fiber grating sensing system provided by the utility model can effectively ensure the accuracy of the acquired vital sign information of the inspection object, and will not affect the imaging quality of the medical imaging equipment using the fiber grating sensing system provided by the utility model.
[0041] Specifically, the subject can stand on the fiber grating module 300 or lie on the fiber grating module 300. When the subject stands on the fiber grating module 300, the weight information of the subject can be obtained according to the measurement demodulation signal. When the subject lies flat on the fiber module, both the weight information and the height information of the subject can be obtained according to the measurement demodulation signal. When the body position of the subject changes or the subject moves, the measurement demodulation signal generated by the demodulation module 100 will also change, so that the body position information and movement information of the subject can also be obtained according to the measurement demodulation signal.
[0042] Furthermore, taking the inspection object lying on the fiber grating module 300 as an example, when the inspection object's height and weight need to be measured, the inspection object can be allowed to lie flat on the fiber grating module 300, and then according to the pressure information sensed by each of the measuring fiber grating sensing units 311, the measuring fiber grating sensing units 311 pressed under the inspection object are screened out as target measuring fiber grating sensing units (i.e., measuring fiber grating sensing units 311 at positions where the pressure is greater than 0), and then according to the distance between two target measuring fiber grating sensing units closest to the head and tail of the inspection object and arranged relatively along the height direction of the inspection object, the inspection object's height information can be obtained, and according to the sum of the pressures sensed by all the target measuring fiber grating sensing units, the inspection object's weight information can be obtained. It should be noted that, as can be understood by those skilled in the art, when the length of the fiber grating module 300 along the height direction of the inspection object is smaller than the height of the inspection object, the inspection object can keep its trunk and limb regions located on the fiber grating module 300. At this time, the weight information of the trunk and limb regions of the inspection object can be obtained based on the sum of the pressures sensed by the fiber grating sensing units according to all target measurements. Since the weight of the trunk and limb regions of the human body accounts for approximately 90% of the total body weight, the weight information of the inspection object can be obtained based on this proportional relationship.
[0043] Furthermore, a corresponding pressure distribution diagram can be drawn according to the pressure information at the location of each of the measuring fiber Bragg grating sensing units 311. Since the drawn pressure distribution diagram is different when the body position of the inspection object is different, the body position information of the inspection object can be obtained according to the pressure distribution diagram.
[0044] Since the measurement demodulation signal corresponding to at least one measurement fiber Bragg grating sensing unit 311 may change during the movement of the inspection object, the movement information of the inspection object may be obtained by analyzing the measurement demodulation signals corresponding to each of the measurement fiber Bragg grating sensing units 311 .
[0045] In some exemplary embodiments, the demodulation module 100 is configured to receive the measurement waveform signal reflected back by each of the measurement fiber Bragg grating sensing units 311, and demodulate the measurement waveform signal to generate a corresponding measurement demodulation signal. The main control module 200 is configured to obtain the pressure information, stress information or deformation information sensed by each of the measurement fiber Bragg grating sensing units 311 according to the measurement demodulation signal corresponding to each of the measurement fiber Bragg grating sensing units 311, and then obtain characteristic information such as height information, weight information, body position information and movement information of the inspection object.
[0046] Specifically, for each measuring fiber grating sensor unit 311, when the position where the measuring fiber grating sensor unit 311 is located is compressed, strain will occur, and the strain will be transmitted to the measuring fiber grating sensor unit 311, causing the grating area to deform, and the relative positions of each grating bar to change, so that the central wavelength of the light reflected back by the measuring fiber grating sensor unit 311 changes (that is, the reflected measurement waveform signal changes). This change can be collected by the demodulation module 100 and modulated into a corresponding measurement demodulation signal. The measurement demodulation signal is analyzed and processed by the main control module 200 to obtain parameters such as pressure, stress or deformation at the position where the measuring fiber grating sensor unit 311 is located.
[0047] It should be noted that, as can be understood by those skilled in the art, the utility model does not limit the specific structure of the main control module 200. The main control module 200 may include but is not limited to a processor and a memory including a communication connection. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The memory may include non-volatile and / or volatile memory. The non-volatile memory may include a read-only memory (ROM), a programmable memory (PROM), an electrically programmable memory (EPROM), an electrically erasable programmable memory (EEPROM) or a flash memory. The volatile memory may include a random access memory (RAM) or an external cache memory.
[0048] It should also be noted that the central wavelengths of the multiple measuring fiber grating sensor units 311 in the same fiber grating string 310 are different from each other, so that different measuring fiber grating sensor units 311 in the same fiber grating string 310 can reflect light of different wavelengths, that is, the waveform signals reflected back by different measuring fiber grating sensor units 311 in the same fiber grating string 310 are different, so different measuring fiber grating sensor units 311 can be distinguished. In addition, it should be noted that although Figure 2 The fiber grating module 300 includes 12 fiber grating strings 310, and each of the fiber grating strings 310 includes 6 measuring fiber grating sensor units 311. However, as can be understood by those skilled in the art, this does not constitute a limitation to the utility model. The utility model does not limit the specific number of the fiber grating strings 310 and the specific number of measuring fiber grating sensor units 311 in each of the fiber grating strings 310. The specific number of the fiber grating strings 310 and the specific number of measuring fiber grating sensor units 311 in each of the fiber grating strings 310 can be reasonably set according to the specific size of the examination bed 400.
[0049] In some exemplary embodiments, interfaces corresponding to the plurality of fiber grating strings 310 may be provided on the demodulation module 100 , that is, different fiber grating strings 310 are connected to different interfaces on the demodulation module 100 .
[0050] In some exemplary embodiments, the demodulation module 100 is further configured to emit lasers of a preset wavelength band to the multiple fiber grating strings 310. Thus, by providing incident light through the demodulation module 100, the cost of the fiber grating sensing system provided by the utility model can be further reduced. It should be noted that, as can be understood by those skilled in the art, in other embodiments, a light source module can also be separately provided to emit lasers of a preset wavelength band to the multiple fiber grating strings 310. Specifically, the preset wavelength band can be, but is not limited to, 1528nm to 1568nm.
[0051] In some exemplary embodiments, at least one of the fiber grating strings 310 further includes a reference fiber grating sensor unit 312. The demodulation module 100 is further configured to receive the reference waveform signal reflected back by the reference fiber grating sensor unit 312 and demodulate it to generate a corresponding reference demodulation signal and send it to the main control module 200; the main control module 200 is further configured to correct the measurement demodulation signal corresponding to each of the measurement fiber grating sensor units 311 according to the reference demodulation signal. Since the distance between each grating of the grating will also change when the ambient temperature changes, the wavelength of the light reflected back by the fiber grating sensor unit will change. Therefore, by setting the reference fiber grating sensor unit 312, the measurement demodulation signal corresponding to each of the measurement fiber grating sensor units 311 can be corrected according to the reference demodulation signal corresponding to the reference fiber grating sensor unit 312, thereby compensating for the measurement error caused by the change in ambient temperature, and further improving the measurement accuracy of the fiber grating sensing system provided by the utility model. Preferably, in order to reduce the cost, only one reference fiber Bragg grating sensor unit 312 may be provided in one of the fiber Bragg grating strings 310 .
[0052] In some exemplary embodiments, the main control module 200 is further configured to obtain deformation information of the examination bed 400 according to the measurement demodulation signal. Since the examination bed 400 is made of carbon fiber for medical imaging equipment such as computed tomography (CT) and positron emission computed tomography (PET / CT), it will deform to a certain extent when it is compressed, and the deformation of the examination bed 400 will have a certain degree of influence on the imaging of medical imaging equipment such as computed tomography (CT) and positron emission computed tomography (PET / CT). Therefore, by obtaining the deformation information of the examination bed 400, it can provide certain data support for the imaging of medical imaging equipment such as computed tomography (CT) and positron emission computed tomography (PET / CT), and ensure the imaging accuracy of medical imaging equipment such as computed tomography (CT) and positron emission computed tomography (PET / CT).
[0053] In some exemplary embodiments, the difference between the center wavelengths of any two adjacent measuring fiber grating sensor units 311 in the same fiber grating string 310 is greater than a first preset value. Therefore, by setting the difference between the center wavelengths of any two adjacent measuring fiber grating sensor units 311 in the same fiber grating string 310 to be greater than the first preset value, the waveform signals reflected back by any two adjacent measuring fiber grating sensor units 311 in the same fiber grating string 310 can be effectively avoided from overlapping, thereby further improving the measurement accuracy of the fiber grating sensing system provided by the utility model. It should be noted that, as can be understood by those skilled in the art, the first preset value can be set according to actual needs, and the utility model does not limit this. Preferably, the first preset value is greater than 4nm, for example, the first preset value can be set to 5nm. The inventor has found through a large number of experiments that the maximum wavelength offset of the measuring fiber Bragg grating sensor unit 311 caused by the inspection object is 4nm. Therefore, by setting the difference between the center wavelengths of any two adjacent measuring fiber Bragg grating sensor units 311 in the same fiber Bragg grating string 310 to be greater than 4nm, the waveform signals reflected back by any two adjacent measuring fiber Bragg grating sensor units 311 in the same fiber Bragg grating string 310 can be effectively avoided from overlapping, thereby further improving the measurement accuracy of the fiber Bragg grating sensing system provided by the utility model.
[0054] In some exemplary embodiments, the distance between any two adjacent measuring fiber Bragg grating sensing units 311 in the same fiber Bragg grating string 310 is greater than or equal to the second preset value. Therefore, by setting the distance between any two adjacent measuring fiber Bragg grating sensing units 311 in the same fiber Bragg grating string 310 to be greater than or equal to the second preset value, the total number of measuring fiber Bragg grating sensing units 311 in the fiber Bragg grating sensing system provided by the utility model can be reduced, which helps to reduce the cost of the fiber Bragg grating sensing system provided by the utility model. It should be noted that, as can be understood by those skilled in the art, the second preset value can be set according to actual needs (for example, the second preset value can be 10 cm), and the utility model does not limit this.
[0055] Please continue to refer to Figure 2 ,like Figure 2As shown, in some exemplary embodiments, the multiple measuring fiber grating sensing units 311 in the same fiber grating string 310 are sequentially connected in series. Therefore, by sequentially connecting the multiple measuring fiber grating sensing units 311 in the same fiber grating string 310 in series, incident light can be provided to the multiple measuring fiber grating sensing units 311 in the same fiber grating string 310 through the same channel, and waveform signals reflected back by the multiple measuring fiber grating sensing units 311 in the same fiber grating string 310 can be received through the same channel, thereby further reducing the cost of the fiber grating sensing system provided by the utility model.
[0056] In some exemplary embodiments, the multiple measuring fiber grating sensing units 311 in the same fiber grating string 310 are integrated on the same optical fiber. Thus, by integrating the multiple measuring fiber grating sensing units 311 in the same fiber grating string 310 on the same optical fiber, the cost of the fiber grating sensing system provided by the utility model can be effectively reduced. Specifically, a fiber grating string 310 can be formed by etching multiple Bragg gratings inside an optical fiber (each Bragg grating and the optical fiber region where it is located constitute a fiber grating sensing unit).
[0057] It should be noted that, as can be understood by those skilled in the art, for the fiber grating string 310 having a reference fiber grating, preferably, the multiple measurement fiber grating sensor units 311 and the reference fiber grating sensor unit 312 in the fiber grating string 310 are integrated on the same optical fiber.
[0058] Please continue to refer to Figure 2 ,like Figure 2 As shown, in some exemplary embodiments, the fiber Bragg grating module 300 further includes a flexible matrix 320 for carrying the plurality of fiber Bragg grating strings 310, and each of the measuring fiber Bragg grating sensing units 311 is disposed in the flexible matrix 320. Thus, by disposing each of the measuring fiber Bragg grating sensing units 311 in the flexible matrix 320, not only can the measuring fiber Bragg grating sensing units 311 be effectively prevented from being directly exposed to the external environment, thereby effectively preventing the external environment from causing damage to the measuring fiber Bragg grating sensing units 311, but also the flexible matrix 320 can also play a role in fixing each of the measuring fiber Bragg grating sensing units 311, making it easier to place the fiber Bragg grating module 300 as a whole. It should be noted that, as can be understood by those skilled in the art, the reference fiber Bragg grating sensing unit 312 is disposed outside the flexible matrix 320.
[0059] Please continue to refer to Figure 2 ,like Figure 2As shown, in some exemplary embodiments, the multiple fiber grating strings 310 are spaced apart along a first direction D1, and the multiple measuring fiber grating sensor units 311 in the same fiber grating string 310 are spaced apart along a second direction D2, and the first direction D1 is perpendicular to the second direction D2. Therefore, by arranging the multiple fiber grating strings 310 along the first direction D1 and arranging the multiple measuring fiber grating sensor units 311 in the same fiber grating string 310 along the second direction D2, it is easier for the main control module 200 to analyze the measurement demodulation signal corresponding to each measuring fiber grating sensor unit 311, so as to obtain the height information, weight information, body position information, movement information and other vital signs information of the inspected object. It should be noted that although Figure 2 The example in which the first direction D1 is set along the length direction of the flexible substrate 320 and the second direction D2 is set along the width direction of the flexible substrate 320 is used for explanation. However, as those skilled in the art can understand, this does not constitute a limitation to the present invention. In other embodiments, the first direction D1 can be set along the width direction of the flexible substrate 320, and the second direction D2 can be set along the length direction of the flexible substrate 320.
[0060] In some exemplary embodiments, the plurality of fiber grating strings 310 are arranged at equal intervals along the first direction D1, and the plurality of measuring fiber grating sensing units 311 in the same fiber grating string 310 are arranged at equal intervals along the second direction D2. Thus, by arranging the plurality of fiber grating strings 310 at equal intervals along the first direction D1, and arranging the plurality of measuring fiber grating sensing units 311 in the same fiber grating string 310 at equal intervals along the second direction D2, it is easier for the main control module 200 to analyze the measurement demodulation signals corresponding to the respective measuring fiber grating sensing units 311, so as to obtain the physical sign information such as the height information, weight information, body position information, and movement information of the inspection object.
[0061] To realize the above idea, the present invention also provides an examination bed 400 (see Figure 3), the inspection bed 400 includes a bed body, a flexible matrix 320 and a plurality of independently arranged fiber grating strings 310, each of the fiber grating strings 310 includes a plurality of measuring fiber grating sensing units 311, the flexible matrix 320 is arranged on the bed body, and each of the measuring fiber grating sensing units 311 is arranged in the flexible matrix 320. Thus, by using the inspection bed 400 provided by the utility model in conjunction with the demodulation module 100 and the main control module 200 mentioned above, the physical sign information such as the height information, weight information, body position information, and movement information of the inspection object can be automatically identified, and there is no need for the operator to manually input the relevant information, which effectively saves time and avoids errors, thereby facilitating the improvement of the intelligence of the medical imaging equipment using the inspection bed 400 provided by the utility model. In addition, since each fiber grating string 310 is independently arranged, it is possible to effectively avoid interference between different fiber grating strings 310, thereby facilitating the improvement of the measurement accuracy of the physical sign information such as the height information, weight information, body position information, and movement information of the inspection object.
[0062] In some exemplary embodiments, the multiple fiber grating strings 310 are spaced apart along a first direction D1 of the flexible substrate 320, and the multiple measurement fiber grating sensor units 311 in the same fiber grating string 310 are spaced apart along a second direction D2 of the flexible substrate 320, and the first direction D1 is perpendicular to the second direction D2.
[0063] In some exemplary embodiments, the multiple fiber grating strings 310 are arranged at equal intervals along the first direction D1 of the flexible substrate 320 , and the multiple measurement fiber grating sensor units 311 in the same fiber grating string 310 are arranged at equal intervals along the second direction D2 of the flexible substrate 320 .
[0064] In some exemplary embodiments, at least one of the fiber grating strings 310 further includes a reference fiber grating sensor unit 312 , and the reference fiber grating sensor unit 312 is disposed on the outside of the flexible substrate 320 .
[0065] It should be noted that, as those skilled in the art can understand, more details about the fiber grating string 310 in the examination bed 400 can be adaptively understood by referring to the relevant contents above, and will not be described in detail here.
[0066] In order to realize the above-mentioned idea, the utility model also provides a medical imaging device, which includes the fiber grating sensing system described in any one of the above items or the examination bed 400 described in any one of the above items. The medical imaging device provided by the utility model can automatically identify the physical information such as the height information, weight information, body position information, and movement information of the inspection object, and there is no need for the operator to manually input relevant information, which effectively saves time and avoids errors, thereby helping to improve the intelligence of the medical imaging device. In addition, since the multiple fiber grating strings 310 in the medical imaging device provided by the utility model are independently arranged, it can effectively avoid interference between different fiber grating strings 310, thereby helping to improve the measurement accuracy of the physical information such as the height information, weight information, body position information, and movement information of the inspection object. In addition, since the fiber grating has the advantages of good flexibility, safe insulation, no heat generation, high temperature resistance, no interaction with the inspection object, no electromagnetic radiation, resistance to electromagnetic interference, suitability for complex electromagnetic environments, good electromagnetic compatibility, high measurement accuracy, and short response time, the fiber grating sensing system provided by the utility model can effectively ensure the accuracy of the acquired vital sign information of the inspection object without affecting the imaging quality of the medical imaging equipment provided by the utility model.
[0067] Please continue to refer to Figure 3 , which is a schematic diagram of the structure of a medical imaging device provided by an embodiment of the utility model. Figure 3 As shown, the medical imaging device further includes a scanner 500 communicatively connected to the main control module 200 , and the scanner 500 has a scanning cavity 510 .
[0068] In summary, compared with the prior art, the fiber grating sensing system, the examination bed 400 and the medical imaging device provided by the utility model have the following beneficial effects:
[0069] The utility model can automatically identify the physical information of the inspection object, such as height information, weight information, body position information, movement information, etc., and does not require the operator to manually input relevant information, which effectively saves time and avoids errors, thereby helping to improve the intelligence of medical imaging equipment. In addition, since the multiple fiber grating strings 310 in the utility model are independently arranged, it is possible to effectively avoid mutual interference between different fiber grating strings 310, thereby helping to improve the measurement accuracy of the utility model. In addition, since the fiber grating has the advantages of good flexibility, safe insulation, no heat generation, high temperature resistance, no interaction with the inspection object, no electromagnetic radiation, resistance to electromagnetic interference, suitable for complex electromagnetic environments, good electromagnetic compatibility, high measurement accuracy, short response time, etc., by adopting the utility model, it is possible to effectively ensure the accuracy of the physical information of the inspection object obtained, and it will not affect the imaging quality of the medical imaging equipment.
[0070] It should be noted that, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0071] It should also be noted that the above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure content belong to the protection scope of the utility model. Obviously, technicians in this field can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations fall within the scope of the utility model and its equivalent technology, the utility model is also intended to include these modifications and variations.
Claims
1. A fiber Bragg grating sensing system for sensing vital signs of an object under examination, characterized in that: The fiber Bragg grating sensing system comprises a demodulation module (100), a main control module (200) and a fiber Bragg grating module (300), wherein the fiber Bragg grating module (300) is connected to the demodulation module (100), and the demodulation module (100) is connected to the main control module (200); The fiber grating module (300) comprises a plurality of independently arranged fiber grating strings (310), and each of the fiber grating strings (310) comprises a plurality of measuring fiber grating sensing units (311); The demodulation module (100) is configured to generate a corresponding measurement demodulation signal and send it to the main control module (200); The main control module (200) is configured to analyze the measurement demodulation signal to obtain vital sign information of the subject being examined.
2. The fiber Bragg grating sensing system according to claim 1, characterized in that: The difference between the central wavelengths of any two adjacent measuring fiber grating sensing units (311) in the same fiber grating string (310) is greater than a first preset value.
3. The fiber Bragg grating sensing system according to claim 1, characterized in that: At least one of the fiber grating strings (310) further includes a reference fiber grating sensing unit (312).
4. The fiber Bragg grating sensing system according to claim 1, characterized in that: The multiple fiber grating strings (310) are arranged at intervals along a first direction (D1), and the multiple measurement fiber grating sensing units (311) in the same fiber grating string (310) are arranged at intervals along a second direction (D2), and the first direction (D1) is perpendicular to the second direction (D2).
5. The fiber Bragg grating sensing system according to claim 1, characterized in that: The distance between any two adjacent measuring fiber grating sensing units (311) in the same fiber grating string (310) is greater than or equal to a second preset value.
6. The fiber Bragg grating sensing system according to claim 1, characterized in that: The plurality of measuring fiber grating sensing units (311) in the same fiber grating string (310) are integrated and arranged on the same optical fiber.
7. The fiber Bragg grating sensing system according to claim 1, characterized in that: The fiber grating module (300) further comprises a flexible substrate (320) for carrying the plurality of fiber grating strings (310).
8. An examination bed, characterized in that: The inspection bed (400) comprises a bed body, a flexible substrate (320), and a plurality of independently arranged fiber optic grating strings (310), each of the fiber optic grating strings (310) comprising a plurality of measuring fiber optic grating sensing units (311), the flexible substrate (320) being arranged on the bed body, and each of the measuring fiber optic grating sensing units (311) being arranged in the flexible substrate (320).
9. The examination bed according to claim 8, characterized in that: The multiple fiber grating strings (310) are arranged at intervals along a first direction (D1) of the flexible substrate (320), and the multiple measurement fiber grating sensing units (311) in the same fiber grating string (310) are arranged at intervals along a second direction (D2) of the flexible substrate (320), and the first direction (D1) is perpendicular to the second direction (D2).
10. A medical imaging device, characterized in that: A fiber grating sensing system comprising any one of claims 1 to 7, or an examination bed (400) comprising any one of claims 8 to 9.