CN113425323B - Control system and method of CT diagnosis bed - Google Patents
Control system and method of CT diagnosis bed Download PDFInfo
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- CN113425323B CN113425323B CN202110915348.3A CN202110915348A CN113425323B CN 113425323 B CN113425323 B CN 113425323B CN 202110915348 A CN202110915348 A CN 202110915348A CN 113425323 B CN113425323 B CN 113425323B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
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Abstract
The invention relates to the technical field of CT, in particular to a control system and a control method of a CT diagnosis bed. The device comprises a control module, a control key and a travel switch; the control module is internally provided with a first voltage threshold, a first time threshold, a first speed threshold and a first distance threshold; the control module is respectively connected with the control key and the travel switch and is used for receiving the signals and forming control signals; after the control key is started, the travel switch forms a voltage signal and sends the voltage signal to the control module, the control module calculates the voltage value of the voltage signal and the time value formed by the voltage signal, when the voltage value is larger than a first voltage threshold value and the time value is larger than a first time threshold value, the control module forms a control instruction, controls the CT diagnostic bed to move at a first speed threshold value according to the voltage value, decelerates and moves after moving to a first distance threshold value, and stops moving at the maximum limiting distance of the CT diagnostic bed. Solves the problem of difficult positioning of CT diagnosis bed.
Description
Technical Field
The invention relates to the technical field of CT, in particular to a control system and a control method of a CT diagnosis bed.
Background
With the development of medicine and the progress of science and technology, the medical imaging technology has been developed.
Medical imaging refers to the process of forming medical image data, and also refers to the technology of forming medical imaging (modern medical imaging). The medical imaging technology is a science that the form, structure and certain physiological functions of the tissue or organ in the organism are extracted by means of the interaction of certain energy and the organism, and the information is provided for the research of the biological tissue and the clinical diagnosis.
In the existing medical imaging technology, structural images describing physiological anatomy of a human body, such as CT imaging and MRI imaging, and functional images describing functional activity conditions of tissue organs in different states of the human body, such as PET imaging, are more commonly utilized.
When a patient needs to perform CT imaging, CT imaging is required to be performed on a CT diagnostic couch, and thus, the CT diagnostic couch needs to be moved forward or backward to complete an examination. In the prior art, the movement of the CT diagnostic bed is mainly completed through two control keys, one is a control key for controlling the CT diagnostic bed to advance or retreat, the other is an acceleration key for controlling the control key, and the CT diagnostic bed has two movement speeds due to the existence of the acceleration key, one is normal movement without the acceleration key, and the other is acceleration movement by pressing the acceleration. Since there are only two moving speeds, positioning is difficult and moving speeds are difficult to control when positioning is performed.
In summary, the technical problem solved by the present invention is how to solve the problem of difficult positioning of the CT diagnostic bed.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide a control system and a control method of a CT diagnosis bed, which solve the problem of difficult positioning of the CT diagnosis bed.
The invention discloses a control system of a CT diagnosis bed, which comprises: the control module, the control key and the travel switch; wherein,,
the control module is used for controlling the CT diagnosis bed to move, the control key is used for controlling the travel switch, and the travel switch is used for providing a voltage signal;
a first voltage threshold, a first time threshold, a first speed threshold and a first distance threshold are set in the control module;
the control module is connected with the travel switch respectively and is used for receiving the signals and forming control signals;
after the control key is started, the travel switch forms a voltage signal and sends the voltage signal to the control module, the control module calculates the voltage value of the voltage signal and the time value formed by the voltage signal, when the voltage value is larger than a first voltage threshold value and the time value is larger than a first time threshold value, the control module forms a control instruction, controls CT diagnosis to move at a first speed threshold value according to the voltage value, decelerates and moves after moving to a first distance threshold value, and stops moving at the maximum limiting distance of the CT diagnosis bed.
Preferably, the voltage value of the travel switch is 0-5V, and the travel switch operates in a pedal mode.
Preferably, the first speed threshold sets different speeds according to the magnitudes of the different voltage values.
Preferably, the control system further comprises an acceleration control key, the acceleration control key is connected to the control module, a first voltage interval threshold value and a second speed threshold value are arranged in the control module, the maximum value of the first voltage interval threshold value is smaller than the first voltage threshold value, the second speed threshold value is larger than the first speed threshold value, when the voltage value calculated by the control module is within the first voltage interval threshold value after the acceleration control key is started, the control module controls the CT diagnosis bed to move at the second speed threshold value, decelerates after moving to the first distance threshold value, and stops moving at the maximum limiting distance of the CT terminal bed.
Preferably, when the voltage value output by the travel switch is greater than the maximum value of the first voltage interval threshold, the control module controls the CT diagnostic couch to move at 30 x-50=y, wherein x is the voltage value of the voltage signal output by the travel switch at this time, and y is the moving speed.
Preferably, the control module does not control the CT diagnostic couch movement when the voltage value output by the travel switch is less than the minimum value of the first voltage interval threshold.
Preferably, the control module does not control the CT diagnostic couch to move when the voltage value is greater than the first voltage threshold and the time value is less than or equal to the first time threshold.
In view of this, another object of the present invention is to provide a control method for a CT diagnostic couch, comprising the steps of:
after the control module receives the signal sent by the control key, the travel switch starts to operate and sends a voltage signal to the control module, the control module calculates a voltage value and a time value formed by the voltage signal according to the voltage signal, when the voltage value is larger than a first voltage threshold value and the time value is larger than the first time threshold value, the control module forms a control instruction, controls the CT diagnostic bed to move at a first speed threshold value according to the voltage, starts to decelerate and move after moving to a first distance threshold value, and stops moving at the maximum limiting distance of the CT diagnostic bed.
Preferably, after the acceleration control key sends out a signal, when the pressure value is within the first voltage interval threshold, the control module controls the CT diagnostic bed to move at the second speed threshold, to move at a first distance threshold, to decelerate and to move, and to stop moving at the maximum limit distance of the CT diagnostic bed.
After the technical scheme is adopted, compared with the prior art, the invention has the beneficial effects that the technical problem of difficult positioning in the prior art is solved, the free control of the moving speed is realized, and meanwhile, the probability of misoperation is reduced.
Drawings
FIG. 1 is a schematic diagram of a control system for a CT diagnostic couch of the present invention;
FIG. 2 is a schematic flow chart of a control system of a CT diagnostic bed according to the present invention;
FIG. 3 is a schematic diagram of an acceleration control flow of a control system of a CT diagnostic bed according to the present invention;
FIG. 4 is a flow chart of a control method of a CT diagnostic bed according to the present invention.
Reference numerals: the control device comprises a control module 1, a control key 2, a travel switch 3, an acceleration control key 4, a backward travel switch 5 and a forward travel switch 6.
Detailed Description
Advantages of the invention are further illustrated in the following description, taken in conjunction with the accompanying drawings and detailed description.
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present invention, and are not of specific significance per se. Thus, "module" and "component" may be used in combination.
Referring to fig. 1 and 2, the present embodiment provides a control system of a CT control bed, which includes a control module 1, a control key 2, and a travel switch 3; wherein,,
the control module 1 is used for controlling the CT diagnosis bed to move, the control key 2 is used for controlling the on and off of the travel switch 3, and the travel switch 3 is used for providing a voltage signal;
a first voltage threshold value, a first time threshold value, a first speed threshold value and a first distance threshold value are arranged in the control module 1; the control module 1 is respectively connected with the control key 2 and the travel switch 3 and is used for receiving signals and forming control signals;
after the control key 2 is started, the travel switch 3 forms a voltage signal and sends the voltage signal to the control module 1, the control module 1 calculates the voltage value of the voltage signal and the time value formed by the voltage signal, when the voltage value is larger than a first voltage threshold value and the time value is larger than a first time threshold value, the control module 1 forms a control instruction, controls the CT diagnostic bed to move at a first speed threshold value according to the size of the voltage value, starts to decelerate and move after moving to a first distance threshold value, and stops moving at the maximum limit distance of the CT diagnostic bed.
The present embodiment illustrates that when the control key 2 and the travel switch 3 are connected to the control module 1, respectively, the control key 2 controls the travel switch 3 to be turned on and off. The travel switch 3 comprises a forward travel switch 6 for controlling the forward movement of the CT diagnostic bed and a backward travel switch 5 for controlling the CT diagnostic bed, when the control key 2 is pressed, the whole control system is started, and therefore the travel switch 3 is also started, so that the movement of the CT diagnostic bed is controlled through a voltage signal provided by the travel switch 3. The travel switch 3 is arranged at the bottom of the CT diagnosis bed in a pedal mode, and the principle is similar to that of the accelerator control of an automobile, but the accelerator control of the automobile uses the depression degree of an accelerator pedal into the automobile to provide different power, the pedal of the invention uses a ground plane as a horizontal plane, an inclined angle is formed between the pedal and the ground plane, when the inclined angle is larger, the voltage signal provided by the pedal is smaller, and when the inclined angle between the pedal and the ground is smaller, the voltage signal provided by the pedal is larger. When the voltage signal for doing work on the pedal travel switch is generated and the generated voltage signal is transmitted to the control module, when the control module 1 receives the voltage signal, the voltage value of the voltage signal and the time value generated by the voltage signal at the moment are calculated, the calculated voltage value and time value are respectively compared with the first voltage threshold and the first time threshold, and when the voltage value is larger than the first voltage threshold and the time value is larger than the first time threshold, the control module 1 forms a control instruction so as to control the CT diagnostic bed to move.
If the pedal is a forward travel switch, the control instruction formed by the control module 1 is a control instruction for controlling the CT diagnostic bed to advance, and if the pedal is a backward travel switch 3, the control instruction formed by the control module 1 is a control instruction for controlling the CT diagnostic bed to retreat.
When the voltage signal generated by the travel switch 3 is sent to the control module 1, the voltage value is 0-5V after being calculated by the control module 1, namely, the voltage value generated by the travel switch 3 is 0-5V, the travel switch 3 operates in a pedal mode, when the inclination angle between the pedal and the ground is larger, the voltage signal generated by the travel switch 3 is smaller, when the voltage value of the generated voltage signal is 0V, the included angle between the pedal and the ground is the largest, and otherwise, when the voltage value of the generated voltage signal is 5V, the included angle between the pedal and the ground is the smallest.
The first speed threshold is set to a different speed for the voltage value of the generated different voltage signal. When using the CT diagnostic couch for detection, a doctor controls and positions the position of the CT diagnostic couch at a first speed threshold by pedaling, and the CT diagnostic couch where the patient is positioned is scanned for CT imaging after the completion of positioning.
Referring to fig. 3, the control system further includes an acceleration control key 4, where the acceleration control key 4 is connected to the control module 1. The control module 1 is also internally provided with a first voltage interval threshold value and a second speed threshold value, wherein the maximum value of the first voltage interval threshold value is smaller than the first voltage threshold value, and the second speed threshold value is larger than the first speed threshold value. When the control key 2 is started and the acceleration control key 4 is started, the travel switch 3 generates a voltage signal when doing work on the travel switch at the moment, the voltage signal generated by the travel switch 3 is transmitted to the control module 1, the control module 1 calculates a voltage value and a time value, compares the calculated voltage value with a first voltage interval threshold value, and when the voltage value is within the first voltage interval threshold value, the control module 1 forms a control instruction to control the CT diagnostic bed to move at a second speed threshold value, starts decelerating movement after the CT diagnostic bed reaches the first distance threshold value, and stops moving at the maximum limiting distance of the CT diagnostic bed.
In summary, since the maximum value of the first voltage interval threshold is smaller than the minimum value of the first voltage threshold and the second speed threshold is larger than the first speed threshold, the present embodiment provides that the control command is formed after the speed control key is pressed because the voltage value is required to be larger than the first voltage threshold in the above embodiment, and the present embodiment illustrates that the speed is increased because the voltage value of the voltage signal formed by the travel switch is reduced after the acceleration control key is pressed, although the voltage value of the voltage signal formed by the travel switch is reduced.
In addition, since the voltage value of the voltage signal generated by the travel switch 3 is 0 to 5V, specifically, when the voltage value of the voltage signal generated by the travel switch 3 is 1 to 2V, the control module 1 controls the CT diagnostic couch to move at a moving speed of 10 mm/s. When the voltage is not 1-2V, the control module 1 calculates the moving speed by the calculation formula 30 x-50=y to control the moving speed of the CT diagnosis bed, wherein x is the voltage value output by the time-consuming travel switch, and y is the moving speed. When the acceleration control key 4 is pressed, if the voltage signal generated at this time is sent out by the forward travel switch 3, the control module 1 controls the CT diagnostic bed to calculate the moving speed of the CT diagnostic bed at this time according to the calculation formula when the voltage value calculated by the calculation formula is not in the interval range, controls the CT diagnostic bed to move according to the calculated moving speed, decelerates and moves after moving to the first distance threshold value, and stops moving at the maximum limit distance of the CT diagnostic bed. When the voltage signal formed by the travel switch is received by the control module 1 and calculated into a voltage value, and compared, when the voltage value of the voltage signal formed by the travel switch is smaller than the minimum value of the first voltage interval threshold, the control module 1 does not form a control instruction at this time, because the work done on the pedal travel switch 3 is too small at this time, the judgment of false touch can be that a doctor is in misoperation, or the patient gets on or off the bed carelessly, so that the movement of the CT diagnosis bed can not be controlled.
It should be noted that, according to the first embodiment, when the control module 1 receives the voltage signal of the travel switch 3 and calculates it as the voltage value, it compares the voltage signal with the first voltage threshold, when the voltage value is greater than the first voltage threshold and the time value is less than or equal to the first time threshold, the voltage value exceeds the set starting threshold, but the time is very short, so that the misoperation may be caused by the doctor walking by exchanging with the patient during the operation, or the misoperation may be caused by the patient carelessly touching the travel switch 3 during the upper CT diagnosis bed or the lower CT diagnosis bed, and the control module 1 actively filters the misoperation, does not start, and protects the CT diagnosis bed while protecting the patient.
According to the first embodiment, when the voltage value is smaller than the first voltage threshold value, the control module 1 does not control the CT diagnosis bed to move, and as described above, there is a false touch between the doctor and the patient, but at this time, since the voltage value of the voltage signal formed by the travel switch 3 does not reach the control value of the control module 1 for controlling the CT diagnosis bed, the control is not performed, which also protects the patient and the CT diagnosis bed.
Referring to fig. 4, the present embodiment provides a control method for a CT diagnostic couch, comprising the steps of:
after the control module 1 receives the signal sent by the control key 2, the travel switch 3 starts to operate and sends the generated voltage signal to the control module 1, the control module 1 calculates a voltage value and a time value formed by the voltage signal according to the received voltage signal, compares the voltage value with a first voltage threshold value and a first time threshold value respectively, and when the voltage value is larger than the first voltage threshold value and the time value is larger than the first time threshold value, the control module forms a control instruction to control the CT diagnostic bed to move, decelerates and moves after moving to the first distance threshold value and stops moving at the maximum limiting distance of the CT diagnostic bed.
The steps are as follows:
s1, starting: the control module 1 receives the signal sent by the control key 2, and the travel switch 3 can start to output a voltage signal at the moment;
s2, calculating: the travel switch 3 starts to operate and sends a voltage signal to the control module 1, and the control module 1 calculates a voltage value and a time value formed by the voltage signal from the voltage signal;
s3, comparison: the control module 1 compares the voltage value and the time value with a first voltage threshold value and a first time threshold value respectively;
s4, control: when the voltage value is greater than the first voltage threshold value and the time value is greater than the first time threshold value, the control module 1 forms a control instruction to control the CT diagnosis bed to move.
The intelligent terminal may be implemented in various forms. For example, the terminals described in the present invention may include smart terminals such as mobile phones, smart phones, notebook computers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), navigation devices, and the like, and fixed terminals such as digital TVs, desktop computers, and the like. In the following, it is assumed that the terminal is an intelligent terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.
It should be noted that the embodiments of the present invention are preferred and not limited in any way, and any person skilled in the art may make use of the above-disclosed technical content to change or modify the same into equivalent effective embodiments without departing from the technical scope of the present invention, and any modification or equivalent change and modification of the above-described embodiments according to the technical substance of the present invention still falls within the scope of the technical scope of the present invention.
Claims (9)
1. The control system of the CT diagnosis bed is characterized by comprising a control module, a control key and a travel switch; wherein,,
the control module is used for controlling the CT diagnosis bed to move, the control key is used for controlling the travel switch, and the travel switch is used for providing a voltage signal;
a first voltage threshold, a first time threshold, a first speed threshold and a first distance threshold are set in the control module;
the control module is respectively connected with the control key and the travel switch and is used for receiving the signals and forming control signals;
the control key is started, the travel switch forms a voltage signal and sends the voltage signal to the control module, the control module calculates a voltage value of the voltage signal and a time value formed by the voltage signal, when the voltage value is larger than a first voltage threshold value and the time value is larger than the first time threshold value, the control module forms a control instruction, controls the CT diagnostic bed to move at a first speed threshold value according to the voltage value, decelerates and moves after moving to a first distance threshold value, and stops moving at the maximum limiting distance of the CT diagnostic bed;
the system also comprises an acceleration control key, wherein the acceleration control key is connected with the control module, a first voltage interval threshold value and a second speed threshold value are arranged in the control module, the maximum value of the first voltage interval threshold value is smaller than the first voltage threshold value, the second speed threshold value is larger than the first speed threshold value, when the acceleration control key is started, the voltage value calculated by the control module is in the first voltage interval threshold value, the control module controls the CT diagnosis bed to move at the second speed threshold value, then move at a first distance threshold value in a decelerating manner, and stop moving at the maximum limiting distance of the CT diagnosis bed.
2. The control system of claim 1, wherein the voltage value of the travel switch is 0-5 v, and the travel switch operates in a foot pedal manner.
3. The control system of claim 1, wherein the first speed threshold sets different speeds according to magnitudes of different voltage values.
4. The control system of claim 1, wherein the control module controls the CT diagnostic couch to move when the voltage value output by the travel switch is greater than a maximum value of the first voltage interval threshold, wherein x is the voltage value of the voltage signal output by the travel switch and y is the moving speed.
5. The control system of claim 1, wherein the control module does not control the CT diagnostic couch movement when the voltage value output by the travel switch is less than the minimum value of the first voltage interval threshold.
6. The control system of claim 1, wherein the control module does not control the CT diagnostic couch movement when the voltage value is greater than the first voltage threshold and the time value is less than or equal to the first time threshold.
7. The control system of claim 1, wherein the voltage value is less than or equal to a first voltage threshold, the control module not controlling CT diagnostic couch movement.
8. A control method for a control system of a CT diagnostic couch according to any of claims 1-7, comprising the steps of:
after the control module receives the signal sent by the control key, the travel switch starts to operate and sends a voltage signal to the control module, the control module calculates a voltage value and a time value formed by the voltage signal according to the voltage signal, when the voltage value is larger than a first voltage threshold value and the time value is larger than the first time threshold value, the control module forms a control instruction, controls the CT diagnostic bed to move at a first speed threshold value according to the voltage value, decelerates and moves after moving to a first distance threshold value, and stops moving at the maximum limiting distance of the CT diagnostic bed.
9. The control method of claim 8, wherein the control module controls the CT diagnostic couch to move at the second speed threshold, to move at a first distance threshold, to slow down movement, and to stop moving at a maximum limit distance of the CT diagnostic couch when the pressure value is within the first voltage interval threshold after the acceleration control key signals.
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