CN113425323A - Control system and method of CT diagnosis bed - Google Patents
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- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
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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. 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 used for receiving 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 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 a first time threshold value, the control module forms a control instruction, controls the CT diagnosis bed to move at the first speed threshold value according to the voltage value, decelerates to move after moving to a first distance threshold value, and stops moving at the maximum limit distance of the CT diagnosis bed. The problem of difficult positioning of the CT diagnosis bed is solved.
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 advancement of science and technology, the development of medical imaging technology is great.
Medical imaging refers to the process of forming medical image data, and also refers to the technical equipment for forming medical imaging (modern medical imaging). In the medical imaging technology, the interaction between certain energy and an organism is used for extracting the information of the shape, the structure and certain physiological functions of tissues or organs in the organism, and providing a science for influencing information for biological tissue research and clinical diagnosis.
In the existing medical imaging technology, structural images describing the physiological anatomical structures of the human body, such as CT imaging and MRI imaging, and functional images describing the functional activity conditions of tissues and organs in different states of the human body, such as PET imaging, are commonly used.
When a patient needs to be subjected to CT imaging, CT imaging needs to be carried out on a CT diagnosis bed, so that the CT diagnosis bed needs to be moved forwards or backwards to complete examination. In the prior art, the movement of the CT diagnosis bed is mainly completed through two control keys, one is a control key for controlling the CT diagnosis bed to move forward or backward, and the other is an acceleration key for controlling the control key. Because there are only two moving speeds, positioning is difficult to perform, and the moving speed is difficult to control.
In summary, the technical problem solved by the present invention is how to solve the problem of difficult positioning of the CT diagnostic couch.
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 diagnostic couch, which solve the problem of difficult positioning of the CT diagnostic couch.
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 movement of the CT diagnosis bed, the control key is used for controlling a travel switch, and the travel switch is used for providing a voltage signal;
setting a first voltage threshold, a first time threshold, a first speed threshold and a first distance threshold in the control module;
the control module is respectively connected with the control key and the travel switch and used for receiving 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 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 a first time threshold value, the control module forms a control instruction, controls the CT diagnosis to move at a first speed threshold value according to the voltage value, decelerates to move after moving to a first distance threshold value, and stops moving at the maximum limit 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 depending on the magnitude 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 and a second speed threshold are arranged in the control module, the maximum value of the first voltage interval threshold is smaller than the first voltage threshold, the second speed threshold is larger than the first speed threshold, and after the acceleration control key is started, when the voltage value calculated by the control module is within the first voltage interval threshold, the control module controls the CT diagnosis bed to move at the second speed threshold, move to the first distance threshold and then move at a deceleration, and stop moving at the maximum limit 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 diagnosis bed to move by 30x-50 ═ y, wherein x is the voltage value of the voltage signal output by the travel switch at the moment, and y is the moving speed.
Preferably, when the voltage value output by the travel switch is smaller than the minimum value of the first voltage interval threshold value, the control module does not control the CT diagnosis bed to move.
Preferably, 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 control module does not control the movement of the CT diagnosis bed.
In view of the above, another object of the present invention is to provide a control method for a CT diagnostic couch, comprising the following steps:
after the control module receives a 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 greater than a first voltage threshold value and the time value is greater 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, starts to decelerate after moving to a first distance threshold value, and stops moving at the maximum limit distance of the CT diagnostic bed.
Preferably, after the acceleration control key sends a signal, when the pressure value is within the first voltage interval threshold, the control module controls the CT diagnosis bed to move at the second speed threshold, and after moving to the first distance threshold, the control module decelerates and moves, and stops moving at the maximum limit distance of the CT diagnosis bed.
After the technical scheme is adopted, compared with the prior art, the invention has the advantages of solving the technical problem of difficult positioning in the prior art, realizing the free control of the moving speed and reducing the probability of misoperation.
Drawings
FIG. 1 is a schematic diagram of a control system of a CT diagnostic couch according to the present invention;
FIG. 2 is a schematic flow chart of a control system of a CT diagnostic couch according to the present invention;
FIG. 3 is a schematic view illustrating an acceleration control process of a control system of a CT diagnostic couch according to the present invention;
FIG. 4 is a flow chart illustrating a control method of the CT diagnostic couch according to the present invention.
Reference numerals: 1 is a control module, 2 is a control key, 3 is a travel switch, 4 is an acceleration control key, 5 is a backward travel switch, and 6 is a forward travel switch.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended 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 and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such 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 "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1 and fig. 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 movement of the CT diagnosis bed, the control key 2 is used for controlling the opening and closing of the travel switch 3, and the travel switch 3 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 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 a voltage value of the voltage signal and a time value formed by the voltage signal, when the voltage value is greater than a first voltage threshold value and the time value is greater 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 voltage value, starts to decelerate after moving to a first distance threshold value, and stops moving at the maximum limit distance of the CT diagnostic bed.
This embodiment illustrates that when the control key 2 and the travel switch 3 are respectively connected to the control module 1, 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 diagnosis bed and a backward travel switch 5 for controlling the backward movement of the CT diagnosis 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 diagnosis bed is controlled through the 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 manner, the principle of the travel switch is similar to that of the accelerator control of an automobile, the accelerator control of the automobile is realized by the depression degree of the accelerator pedal towards the inside of the automobile so as to provide different power, the pedal of the invention takes the ground level as the horizontal plane, an inclined angle is formed between the pedal and the ground level, 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 control module 1 receives the voltage signal, the voltage value of the voltage signal and the time value of the voltage signal generation are calculated, the calculated voltage value and the calculated time value are respectively compared with the first voltage threshold and the first time threshold, and when the voltage value is greater than the first voltage threshold and the time value is greater than the first time threshold, the control module 1 forms a control instruction, so that the movement of the CT diagnostic bed is controlled.
If the pedal is a forward stroke switch, the control command formed by the control module 1 at this time is a control command for controlling the CT diagnosis bed to move forward, and if the pedal is a backward stroke switch 3, the control command formed by the control module 1 at this time is a control command for controlling the CT diagnosis bed to move backward.
When the voltage signal generated by the travel switch 3 is sent to the control module 1, after the voltage signal is calculated by the control module 1, the voltage value is 0-5V, that is, the voltage value generated by the travel switch 3 is 0-5V, and the travel switch 3 operates in a pedal mode, the larger the inclination angle between the pedal and the ground is, the smaller the voltage signal generated by the travel switch 3 is, when the voltage value of the generated voltage signal is 0V, the largest included angle between the pedal and the ground is, otherwise, when the voltage value of the generated voltage signal is 5V, the smallest included angle between the pedal and the ground is.
The first speed threshold is a speed set to be different from a voltage value of the generated voltage signal. When the CT diagnosis bed is used for detection, a doctor controls and positions the position of the CT diagnosis bed by stepping at a first speed threshold value, and the CT diagnosis bed where a patient is located is positioned to perform scanning CT imaging after the positioning is finished.
Referring to fig. 3, the control system further includes an acceleration control key 4, and the acceleration control key 4 is connected to the control module 1. A first voltage interval threshold and a second speed threshold are further arranged in the control module 1, the maximum value of the first voltage interval threshold is smaller than the first voltage threshold, and the second speed threshold is larger than the first speed threshold. When the control key 2 is started and the acceleration control key 4 is started at the same time, the travel switch 3 generates a voltage signal when the travel switch is acted, 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 and compares the calculated voltage value with a first voltage interval threshold value, when the voltage value is within the first voltage interval threshold value range, the control module 1 forms a control instruction to control the CT diagnostic bed to move at a second speed threshold value, starts to decelerate after the CT diagnostic bed reaches the first distance threshold value and stops moving at the maximum limit 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, this embodiment provides that, after the speed control key is pressed, since the voltage value is required to be larger than the first voltage threshold in the above embodiment to form the control command, while this embodiment describes that, after the acceleration control key is pressed, the voltage value is reduced, and although the voltage value of the voltage signal formed by the travel switch is reduced, the speed is increased, so as to realize acceleration.
The voltage value of the voltage signal generated by the travel switch 3 is 0-5V, and specifically, when the voltage value of the voltage signal generated by the travel switch 3 is 1-2V, 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 30x-50 as y to control the moving speed of the CT diagnosis bed, wherein x is the voltage value output by the travel switch, and y is the moving speed. When the acceleration control key 4 is pressed, if the voltage signal generated at the moment is sent out by the forward stroke switch 3, the control module 1 controls the CT diagnosis bed to calculate the movement speed of the CT diagnosis bed at the moment according to the calculation formula when the voltage value calculated by the calculation formula is not in the interval range, controls the CT diagnosis bed to move according to the calculated movement speed, decelerates to move after moving to the first distance threshold, and stops moving at the maximum limit distance of the CT diagnosis bed. After the control module 1 receives the voltage signal formed by the travel switch and calculates the voltage signal into a voltage value, the comparison is carried out, and 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 value, the control module 1 does not form a control instruction at the moment, because the power applied to the pedal travel switch 3 is too small at the moment, the control module determines that the fault touch is caused, the fault operation can be carried out by a doctor, or the careless touch is caused when a patient gets on or off the bed, so that the movement of the CT diagnosis bed cannot 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 the voltage signal into a voltage value, the voltage value is compared with the first voltage threshold, and 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, although the voltage value already exceeds the set starting threshold, because the time is very short, there may be a malfunction caused by the doctor walking due to communication with the patient during operation, or a malfunction caused by the patient accidentally touching the travel switch 3 during the time of getting on or off the CT diagnostic bed, and because the contact is only short, the control module 1 actively filters the malfunction, does not start, protects the patient, and protects the CT diagnostic bed.
According to the first embodiment, when the voltage value is smaller than the first voltage threshold, the control module 1 does not control the CT diagnostic couch to move, and there is a possibility that a doctor and a patient may touch the CT diagnostic couch by mistake as described above, 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 diagnostic couch, the control is not performed, and the patient and the CT diagnostic couch are protected.
Referring to fig. 4, the present embodiment provides a control method for a CT diagnostic couch, including the following steps:
after the control module 1 receives the signal sent by the control key 2, the travel switch 3 starts to operate and sends a 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 and the time value with a first voltage threshold value and a first time threshold value respectively, and 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 forms a control instruction to control the CT diagnostic bed to move, decelerates and moves after moving to a first distance threshold value, and stops moving at the maximum limit distance of the CT diagnostic bed.
It should be noted that the steps are as follows:
s1 starts: the control module 1 receives a signal sent by the control key 2, and the travel switch 3 can start to output a voltage signal at the moment;
s2 calculates: 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 according to 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 controls: 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 movement of the CT diagnosis bed.
The smart terminal may be implemented in various forms. For example, the terminal described in the present invention may include an intelligent terminal such as a mobile phone, a smart phone, a notebook computer, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, etc., and a fixed terminal such as a digital TV, a desktop computer, etc. In the following, it is assumed that the terminal is a smart 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 moving purposes.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. A control system of a 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 movement of the CT diagnosis bed, the control key is used for controlling the travel switch, and the travel switch is used for providing a voltage signal;
setting a first voltage threshold, a first time threshold, a first speed threshold and a first distance threshold in the control module;
the control module is respectively connected with the control key and the travel switch and is used for receiving 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 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 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 to move after moving to a first distance threshold value, and stops moving at the maximum limit distance of the CT diagnostic bed.
2. The control system of claim 1, wherein the voltage value of the travel switch is 0-5V, and the travel switch operates in a foot-operated manner.
3. The control system of claim 1, wherein the first speed threshold sets different speeds based on the magnitude of different voltage values.
4. The control system of claim 1, further comprising an acceleration control key, wherein the acceleration control key is connected to the control module, a first voltage interval threshold and a second speed threshold are set in the control module, a maximum value of the first voltage interval threshold is smaller than the first voltage threshold, the second speed threshold is larger than the first speed threshold, and when the acceleration control key is started and a voltage value calculated by the control module is within the first voltage interval threshold, the control module controls the CT diagnostic bed to move at the second speed threshold, decelerate to move to the first distance threshold, and stop moving at a maximum limit distance of the CT diagnostic bed.
5. The control system of claim 4, wherein the control module controls the CT diagnostic couch to move between 30x-50 y when the voltage value output by the travel switch is greater than the 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.
6. The control system of claim 4, wherein the control module does not control the CT diagnostic bed to move when the voltage value output by the travel switch is less than the minimum value of the first voltage interval threshold.
7. The control system of claim 1, wherein the control module does not control the movement of the CT diagnostic couch 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.
8. The control system of claim 1, wherein the voltage value is less than or equal to a first voltage threshold, and the control module does not control movement of the CT diagnostic couch.
9. A control method for a CT diagnostic bed is characterized by comprising the following steps:
after the control module receives a 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 greater than a first voltage threshold and the time value is greater than a first time threshold, the control module forms a control instruction, controls the CT diagnostic bed to move at the first speed threshold according to the voltage value, decelerates to move after moving to the first distance threshold, and stops moving at the maximum limit distance of the CT diagnostic bed.
10. The control method according to claim 9, wherein after the acceleration control key sends a signal, when the pressure value is within the first voltage interval threshold, the control module controls the CT diagnosis bed to move at a second speed threshold, to move to a first distance threshold, to decelerate, and to stop moving at a maximum limit distance of the CT diagnosis bed.
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| CN113425323B (en) | 2023-07-25 |
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