Method, device and system for determining breathing phase

Abstract

The invention relates to the technical field of respiration analysis, in particular to a respiration phase determination method, device and system, and the method comprises the steps: obtaining a mapping relation between a rotation angle of a marking unit and a preset respiration time phase curve; acquiring a current rotation angle of the marking unit; and calculating a target breathing phase corresponding to the current rotation angle based on the mapping relation. The rotatable marking unit is arranged, when the breathing phase of the person to be examined needs to be judged, the current rotation angle of the marking unit can be checked, and according to the mapping relation between the rotation angle of the marking unit and the breathing time phase curve, the current specific breathing phase can be calculated through the current rotation angle of the marking unit; similarly, breathing can be controlled according to the rotation angle of the marking unit, the rotation angle of the marking unit is temporarily kept at the preset position, namely breathing meets the examination state, and therefore accurate positioning of the specific position is achieved, and the examination accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of respiratory analysis, and in particular to a method, device and system for determining a respiratory phase. Background Art

[0002] In the prior art, in the medical field, for some examinations, it is often necessary to control the breathing of the person being examined during the examination process to prevent the examination position of the body from moving too much due to breathing, making it impossible to accurately locate the examination position.

[0003] Existing breathing control technologies include: passive compression, breath holding after deep inspiration, active breathing control, breathing gating, real-time tracking radiation, slow speed and respiratory motion compensation technology. The above breathing control technologies are all "front-gated" technologies. After the front-gated cavity technology determines the respiratory phase, it is necessary to conduct inspection or treatment immediately. Therefore, many inspections cannot be used. Some existing technologies use scanning equipment or monitoring equipment to detect the breathing of the person to be inspected in real time, so as to conduct positioning inspection or treatment at the right time, thereby improving the accuracy of the inspection or treatment.

[0004] However, during some special inspections, it is impossible to use the equipment to detect the breathing of the person being inspected in real time, and it is difficult to know the specific breathing status of the person during the inspection, which makes it difficult to accurately locate a specific position. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a method for determining the respiratory phase to alleviate the technical problem in the prior art that in the process of some special inspections, it is impossible to realize real-time detection of the breathing of the person to be inspected through the equipment, it is difficult to know the specific state of the person's breathing during the inspection, and it is difficult to achieve accurate positioning of a specific position.

[0006] In a first aspect, an embodiment of the present invention provides a method for determining a respiratory phase, the method comprising:

[0007] Obtaining a mapping relationship between a rotation angle of the marking unit and a preset respiratory phase curve;

[0008] Get the current rotation angle of the marker unit;

[0009] Based on the mapping relationship, the target respiratory phase corresponding to the current rotation angle is calculated.

[0010] In combination with the first aspect, an embodiment of the present invention provides a first possible implementation of the first aspect, wherein the step of obtaining a mapping relationship between a phase curve of a marking unit and a preset respiratory phase curve includes:

[0011] Acquire respiratory data and generate complete respiratory phase curve;

[0012] Mark the complete respiratory phase curve to obtain multiple respiratory phases;

[0013] For each respiratory phase, the rotation angle of the marking unit is defined;

[0014] According to the rotation angle of the marking unit, the corresponding relationship between the respiratory phase and the phase curve of the marking unit is constructed.

[0015] In combination with the first aspect, the embodiment of the present invention provides a first possible implementation of the first aspect, the step of acquiring respiratory data and generating a complete respiratory phase curve includes:

[0016] Collect respiratory flow data;

[0017] The respiratory flow data is amplified and transformed to obtain a complete respiratory phase curve.

[0018] In combination with the first aspect, the embodiment of the present invention provides a first possible implementation of the first aspect, after the step of collecting respiratory flow data, further comprising:

[0019] Perform noise reduction on respiratory flow data.

[0020] In combination with the first aspect, the embodiment of the present invention provides a first possible implementation of the first aspect, after the step of constructing the corresponding relationship between the respiratory phase and the phase curve of the marking unit according to the rotation angle of the marking unit, the method includes:

[0021] Generate a rotation trajectory curve of the marking unit according to the phase curve of the marking unit;

[0022] The marking unit is controlled to rotate along a rotation trajectory curve.

[0023] In combination with the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein for each phase, a rotation angle of a marking unit is defined, and a step of obtaining a corresponding relationship includes:

[0024] In the complete respiratory phase curve, extract the phase curve corresponding to a respiratory cycle;

[0025] The phase curve corresponding to the respiratory cycle is phase-marked according to the time sequence to obtain multiple respiratory phases.

[0026] In a second aspect, an embodiment of the present invention provides a respiratory phase determination device, comprising:

[0027] A first acquisition module, used to acquire a mapping relationship between a rotation angle of the marking unit and a preset respiratory phase curve;

[0028] A second acquisition module is used to acquire the current rotation angle of the marking unit;

[0029] The calculation module is used to calculate the target respiratory phase corresponding to the current rotation angle based on the mapping relationship.

[0030] In a third aspect, an embodiment of the present invention provides a respiratory phase determination system, comprising: a scanning mechanism, a collection mechanism, a marking mechanism, and a processing mechanism;

[0031] The scanning mechanism comprises a scanning device and a carrier, the scanning device is used to scan the carrier and the articles on the carrier, and the carrier has a containing surface;

[0032] The collection mechanism includes a gas flow collection component, and the gas flow collection component is used to collect respiratory data;

[0033] The marking mechanism includes a driving member and a rotating fan blade, wherein the driving member can set a rotation speed, and the rotating fan blade is arranged on the containing surface and is drivingly connected to the driving end of the driving member;

[0034] The processing mechanism is electrically connected to the scanning mechanism, the collecting mechanism and the marking mechanism.

[0035] In combination with the third aspect, an embodiment of the present invention provides a first possible implementation of the first aspect, wherein the rotating blade includes a rotating shaft, a first blade and a second blade;

[0036] The rotating shaft is used for transmission connection with the driving member, and the first fan blade and the second fan blade are symmetrically arranged on both sides of the rotating shaft.

[0037] In combination with the third aspect, the embodiment of the present invention provides a first possible implementation of the first aspect, where the marking mechanism includes a housing and a controller;

[0038] The casing is arranged on the containing surface, and the driving member and the rotating fan blades are arranged in the casing;

[0039] The controller is arranged at one end of the casing, and is electrically connected to the driving component.

[0040] The embodiments of the present invention bring the following beneficial effects: The present invention provides a method for determining a respiratory phase, the method comprising: obtaining a mapping relationship between a rotation angle of a marking unit and a preset respiratory phase curve; obtaining a current rotation angle of the marking unit; and based on the mapping relationship, calculating a target respiratory phase corresponding to the current rotation angle.

[0041] The present invention is provided with a rotatable marking unit. By calculating the mapping relationship between the marking unit and the respiratory phase curve of the person to be examined, when it is necessary to judge the respiratory phase of the person to be examined, the current rotation angle of the marking unit can be checked. According to the mapping relationship between the rotation angle of the marking unit and the respiratory phase curve, the current specific respiratory phase can be calculated through the current rotation angle of the marking unit. Similarly, the breathing can also be controlled according to the rotation angle of the marking unit, so that the rotation angle of the marking unit is temporarily maintained at a preset position, that is, the breathing meets the inspection state, thereby achieving accurate positioning of the specific position, thereby improving the accuracy of the inspection.

[0042] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 A schematic diagram of a flow chart of a method for determining a respiratory phase provided by an embodiment of the present invention;

[0046] Figure 2 A schematic diagram of the comparison relationship between the respiratory phase curve, the rotation trajectory curve of the marking unit and the phase curve of the marking unit provided in an embodiment of the present invention;

[0047] Figure 3 A schematic diagram of the structure of a system for determining a respiratory phase provided by an embodiment of the present invention;

[0048] Figure 4 A schematic diagram of the structure of a marking unit of a respiratory phase determination system provided by an embodiment of the present invention;

[0049] Figure 5 A schematic diagram of the structure of rotating fan blades in a respiratory phase determination system provided in an embodiment of the present invention.

[0050] Marking Description:

[0051] 100 - scanning mechanism; 110 - CT machine body; 120 - bed; 130 - mask; 200 - marking unit; 210 - driving member; 220 - rotating blades; 221 - rotating shaft; 222 - first blades; 223 - second blades; 230 - housing; 240 - controller. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0053] In order to facilitate the understanding of this embodiment, the application scenarios and design concepts of the embodiments of the present application are briefly introduced below.

[0054] In the process of more accurate treatment, in order to prevent the location of the diseased area from changing due to the influence of breathing, breathing control technology is generally used to compensate for and accurately locate the tumor.

[0055] Existing breathing control technologies include: (1) passive pressurization; (2) breath holding after deep inhalation; (3) active breathing control; (4) respiratory gating; (5) real-time tracking radiation; (6) slow and (7) respiratory motion compensation technology. Among them, breath holding after deep inhalation technology and respiratory gating technology are commonly used and highly reliable breathing control technologies. Breath holding after deep inhalation technology requires patients to take a deep breath and hold it. It is generally suitable for patients with healthy respiratory function and has high requirements for the breath holding time. Respiratory gating technology tracks and records the position of the patient's chest external marker, and then performs intermittent radiation therapy based on the position information of the marker. The disadvantage of this technology is that the marker is placed on the patient and is easy to move, causing a large position deviation and leading to positioning failure. In order to solve the problem of marker movement, another type of breathing control technology uses a flow sensor to directly track and record the respiratory flow and establish a breathing curve. This type of technology requires the patient to hold his breath at a specified phase before treatment.

[0056] The above-mentioned breathing control technologies all belong to "front-gated" technology, that is, after determining the breathing phase, treatment, such as radiotherapy, is triggered immediately with almost no time interval.

[0057] In the field of lung puncture biopsy, there is a long time interval between scanning and puncture, which makes the existing front gating technology not suitable for puncture biopsy surgery.

[0058] Therefore, it is necessary to provide a breathing control device and technology that can establish a connection between images and breathing phases. Through this technology, the corresponding relationship between slices and breathing phases can be found, so as to determine the specific location of the diseased part during the breathing process and improve the positioning accuracy of the operation or treatment.

[0059] Example 1

[0060] See also Figure 1 The present application embodiment provides a method for determining a respiratory phase, the method comprising:

[0061] S100, obtaining a mapping relationship between a rotation angle of a marking unit and a preset respiratory phase curve;

[0062] S200, obtaining the current rotation angle of the marking unit;

[0063] S300, calculating a target respiratory phase corresponding to the current rotation angle based on the mapping relationship.

[0064] The marking unit in the present invention can rotate continuously, and the rotation speed of the marking unit is adjustable.

[0065] In this embodiment, by calculating the mapping relationship between the rotation speed of the marking unit 200 and the respiratory phase curve of the person to be examined, when it is necessary to judge the respiratory phase of the person to be examined, the current rotation angle of the marking unit 200 can be checked. According to the mapping relationship between the rotation angle of the marking unit 200 and the respiratory phase curve, the current specific respiratory phase can be calculated through the current rotation angle of the marking unit 200.

[0066] Similarly, the breathing can also be controlled according to the rotation angle of the marking unit 200, so that the rotation angle of the marking unit 200 is temporarily maintained at a preset position, that is, the breathing meets the inspection state, thereby achieving accurate positioning of a specific position, thereby improving the accuracy of the inspection.

[0067] As an implementable method, the marking unit 200 may also adopt a telescopic structure, replace the rotational action with a telescopic action, and determine the respiratory phase according to the telescopic length. Step S100, the step of obtaining the mapping relationship between the phase curve of the marking unit and the preset respiratory phase curve, includes:

[0068] S110, acquiring respiratory data and generating a complete respiratory phase curve;

[0069] S120, performing phase marking on the complete respiratory phase curve to obtain multiple respiratory phases;

[0070] S130, defining a rotation angle of the marking unit for each respiratory phase;

[0071] S140, constructing a corresponding relationship between the respiratory phase and the phase curve of the marking unit according to the rotation angle of the marking unit.

[0072] Specifically, in this embodiment, the respiratory data is collected by a respiratory collection device, and the collected complete respiratory data is plotted into a complete respiratory phase curve. Subsequently, the complete respiratory phase curve is segmented, and the positions of the start of inhalation, the end of exhalation, and the transition between exhalation and inhalation are marked in chronological order into multiple respiratory phases.

[0073] Each respiratory phase is corresponded to the position of the marking unit 200. In this embodiment, 180 degrees is a switching point, that is, when inhalation begins, the marking unit 200 is located at a position of 0 degrees, when inhalation ends and exhalation begins, the marking unit 200 is located at a position of 180 degrees, and when exhalation ends and inhalation begins, the marking unit 200 is again located at a position of 0 degrees. During inhalation or exhalation, the marking unit 200 rotates at a uniform speed. According to this rule, the corresponding relationship between each respiratory phase and the phase curve of the marking unit 200 is obtained, that is, the corresponding phase of the phase curve of the marking unit 200 at each respiratory phase, so that the rotation angle of the marking unit 200 at each respiratory phase can be calculated.

[0074] Step S110, the step of acquiring respiratory data and generating a complete respiratory phase curve, includes:

[0075] S112, collecting respiratory flow data;

[0076] S113, amplifying and transforming the respiratory flow data to obtain a complete respiratory phase curve.

[0077] Specifically, when drawing the respiratory phase curve, in this embodiment, a mass flow meter is selected as a gas flow sensor to be used as a respiratory collection device to collect respiratory data.

[0078] During the collection, the mask 130 is buckled on the mouth and nose area of ​​the person to be inspected, and the airtightness of the area is ensured. The tail connection pipeline of the mask 130 is connected to the gas flow sensor to realize the collection of breathing data. The gas flow sensor is provided with a data interface for external transmission so that the gas flow sensor can transmit the collected breathing data to the control end in time.

[0079] The gas flow sensor in this embodiment provides low-pressure signals to the outside, and these low-pressure signals represent the airflow velocity, flow rate and direction of the patient's inhalation and exhalation.

[0080] As an implementable manner, the mass flowmeter in this embodiment may also be replaced by an ultrasonic flowmeter, an electromagnetic flowmeter, a mass flowmeter, etc., and may also be composed of a flow chip and a signal processing chip.

[0081] After processing the respiratory flow data by amplifying or other methods, the data can be made clearer, thereby facilitating the calculation of the respiratory flow data.

[0082] After step S110, the step of collecting respiratory flow data, the method further includes:

[0083] S111, performing noise reduction processing on the respiratory flow data.

[0084] After collecting respiratory flow data, denoising the collected respiratory flow data can improve clarity and quality, thereby improving the accuracy of the data.

[0085] After step S140, the step of constructing the corresponding relationship between the respiratory phase and the phase curve of the marking unit according to the rotation angle of the marking unit, the method further comprises:

[0086] S141, generating a rotation trajectory curve of the marking unit according to the marking unit phase curve;

[0087] S142, controlling the marking unit to rotate according to the rotation trajectory curve.

[0088] Specifically, in this embodiment, the phase curve of the marking unit 200 is generated according to the respiratory phase curve, and each cycle in the phase curve of the marking unit 200 corresponds to the rotation of the marking unit 200 by 360 degrees. After the phase curve of the marking unit 200 is generated, the rotation trajectory curve of the marking unit 200 is generated again. Figure 2 Each rotation angle of the marking unit 200 can correspond to the phase curve of the marking unit 200, so that the rotation angle of the marking unit 200 can be inferred from the respiratory phase curve, or the specific respiratory phase in the respiratory phase curve can be inferred from the rotation angle of the marking unit 200.

[0089] Step S130, for each phase, defining the rotation angle of the marking unit to obtain a corresponding relationship, includes:

[0090] S131, extracting a phase curve corresponding to a respiratory cycle from the complete respiratory phase curve;

[0091] S132, performing phase marking on the phase curve corresponding to the respiratory cycle according to the time sequence to obtain multiple respiratory phases.

[0092] It should be noted that a breathing cycle here refers to a complete breathing that starts from inhalation, switches to exhalation and lasts until the end of exhalation.

[0093] Specifically, the complete respiratory phase curve drawn in the present embodiment may include one or more respiratory cycles. To further improve the accuracy, the phase curve of a respiratory cycle is extracted, and the phase curve corresponding to the respiratory cycle is uniformly phase-marked in chronological order, thereby obtaining multiple respiratory phases. In the present embodiment, eight respiratory phases are uniformly marked in one respiratory cycle, and the eight respiratory phases correspond to the positions of 0°, 45°, 90°, 135°, 180°, 225°, 270° and 315° rotation of the marking unit 200, respectively, so that the relative respiratory phase or the rotation angle of the marking unit 200 can be intuitively observed when viewing.

[0094] The respiratory phase determination device provided in this embodiment includes:

[0095] A first acquisition module, used to acquire a mapping relationship between a rotation angle of the marking unit 200 and a preset respiratory phase curve;

[0096] A second acquisition module, used to acquire the current rotation angle of the marking unit 200;

[0097] The calculation module is used to calculate the target respiratory phase corresponding to the current rotation angle based on the mapping relationship.

[0098] See also Figure 3 , Figure 4 The respiratory phase determination system provided in this embodiment includes: a scanning mechanism 100, a collection mechanism, a marking mechanism and a processing mechanism.

[0099] The scanning mechanism 100 includes a scanning device and a carrier, the scanning device is used to scan the carrier and the items on the carrier, and the carrier has a holding surface. The collection mechanism includes a gas flow collection component, and the gas flow collection component is used to collect respiratory data. The marking mechanism includes a driving member 210 and a rotating fan blade 220, the driving member 210 can set the rotation speed, and the rotating fan blade 220 is arranged on the holding surface and is connected to the driving end of the driving member 210. The processing mechanism is electrically connected to the scanning mechanism 100, the collection mechanism and the marking mechanism.

[0100] Specifically, the scanning mechanism 100 in this embodiment is a CT scanning device, the scanning device is a CT machine body 110, and the carrier is a bed 120. The person to be examined lies on the bed 120, and the CT machine cannot measure the person's breathing state in real time. The acquisition mechanism is arranged on one side of the CT scanning device, and the breathing data of the person on the bed 120 is collected through accessories such as a mask 130.

[0101] The marking mechanism is arranged on the bed 120, and the rotation trajectory curve of the fan blade is obtained according to the above method and the fan blade is driven to rotate according to the rotation trajectory curve, and the rotating fan blade 220 is pushed into the CT machine body 110 together with the bed 120 and the personnel for scanning. The CT machine body 110 cannot measure the breathing state of the personnel in real time, and cannot intuitively view the breathing state of the personnel. The CT machine body 110 can be controlled to scan the marking mechanism to obtain the current rotation angle of the rotating fan blade 220, and the current corresponding breathing phase is deduced according to the current rotation angle, so as to know the breathing state of the personnel.

[0102] See also Figure 5 In this embodiment, the rotating blade 220 includes a rotating shaft 221, a first blade 222 and a second blade 223. The rotating shaft 221 is used for transmission connection with the driving member 210, and the first blade 222 and the second blade 223 are symmetrically arranged on both sides of the rotating shaft 221.

[0103] Specifically, the first blade 222 and the second blade 223 in this embodiment are both fixedly connected to the rotating shaft 221 , and the rotating shaft 221 rotates under the transmission of the driving member 210 to drive the first blade 222 and the second blade 223 to rotate.

[0104] Moreover, in the present embodiment, the first blade 222 and the second blade 223 are both rectangular parallelepiped, the thickness of the first blade 222 is less than the thickness of the second blade 223; the width of the first blade 222 is greater than the width of the second blade 223. Under this structure, the combination of the thickness and width of the first blade 222 and the second blade 223 makes the moment of inertia of the marking unit 200 small. The different cross-sectional shapes of the first blade 222 and the second blade 223 facilitate the identification of the rotation state of the marking unit 200 in the CT image, such as the rotation angle of the first blade 222 and the second blade 223.

[0105] In this embodiment, the marking mechanism further includes a housing 230 and a controller 240. The housing 230 is disposed on the containing surface, and the driving member 210 and the rotating fan blade 220 are both disposed in the housing 230. The controller 240 is disposed at one end of the housing 230, and the controller 240 is electrically connected to the driving member 210.

[0106] Specifically, the casing 230 in this embodiment is arranged on the bed 120 and covers the rotating fan blades 220, the driving member 210 and the controller 240, so as to protect the rotating fan blades 220, the driving member 210 and the controller 240 and avoid the accuracy being affected by external interference during operation. The controller 240 can control the driving member 210, thereby adjusting the rotation speed of the driving member 210 and ensuring the constant speed rotation of the rotating shaft 221.

[0107] It should be noted that, in this embodiment, each component of the marking unit 200 is made of a material that does not affect CT imaging, specifically, acrylic material.

[0108] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0109] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0110] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0111] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0112] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for determining a respiratory phase, characterized in that: The method comprises: Obtaining a mapping relationship between a rotation angle of the marking unit and a preset respiratory phase curve; Obtaining the current rotation angle of the marking unit; Based on the mapping relationship, a target respiratory phase corresponding to the current rotation angle is calculated.

2. The method according to claim 1, characterized in that The step of obtaining a mapping relationship between the phase curve of the marking unit and a preset respiratory phase curve comprises: Acquire respiratory data and generate complete respiratory phase curve; Performing phase marking on the complete respiratory phase curve to obtain multiple respiratory phases; For each of the respiratory phases, defining a rotation angle of the marking unit; According to the rotation angle of the marking unit, a corresponding relationship between the respiratory phase and the marking unit phase curve is constructed.

3. The method according to claim 2, characterized in that The step of acquiring respiratory data and generating a complete respiratory phase curve comprises: Collect respiratory flow data; The respiratory flow data is amplified and transformed to obtain the complete respiratory phase curve.

4. The method according to claim 2, characterized in that: After the step of collecting respiratory flow data, it also includes: The respiratory flow data is subjected to noise reduction processing.

5. The method according to claim 2, characterized in that: After the step of constructing the corresponding relationship between the respiratory phase and the phase curve of the marking unit according to the rotation angle of the marking unit, the method further comprises: Generating a rotation trajectory curve of the marking unit according to the marking unit phase curve; The marking unit is controlled to rotate according to the rotation trajectory curve.

6. The method according to claim 2, characterized in that The step of defining the rotation angle of the marking unit for each phase to obtain the corresponding relationship includes: From the complete respiratory phase curve, extract a phase curve corresponding to a respiratory cycle; The phase curve corresponding to the respiratory cycle is phase-marked according to the time sequence to obtain a plurality of respiratory phases.

7. A respiratory phase determination device, characterized in that: include: A first acquisition module, used to acquire a mapping relationship between a rotation angle of the marking unit and a preset respiratory phase curve; A second acquisition module, used to acquire the current rotation angle of the marking unit; A calculation module is used to calculate a target respiratory phase corresponding to the current rotation angle based on the mapping relationship.

8. A system for determining a respiratory phase, characterized in that: include: Scanning mechanism, collection mechanism, marking mechanism and processing mechanism; The scanning mechanism comprises a scanning device and a carrier, wherein the scanning device is used to scan the carrier and the articles on the carrier, and the carrier has a containing surface; The collection mechanism includes a gas flow collection component, and the gas flow collection component is used to collect respiratory data; The marking mechanism comprises a driving member and a rotating blade, wherein the driving member can set a rotation speed, and the rotating blade is arranged on the containing surface and is drivingly connected to the driving end of the driving member; The processing mechanism is electrically connected to the scanning mechanism, the collecting mechanism and the marking mechanism.

9. The respiratory phase determination system according to claim 8, characterized in that: The rotating fan blade comprises a rotating shaft, a first fan blade and a second fan blade; The rotating shaft is used for transmission connection with the driving member, and the first fan blade and the second fan blade are symmetrically arranged on both sides of the rotating shaft.

10. The respiratory phase determination system according to claim 8, characterized in that: The marking mechanism includes a housing and a controller; The housing is disposed on the containing surface, and the driving member and the rotating fan blades are both disposed in the housing; The controller is arranged at one end of the housing, and the controller is electrically connected to the driving component.

Images