CN113040804B - Method for preventing movement of scanning bed from being out of control - Google Patents
Method for preventing movement of scanning bed from being out of control Download PDFInfo
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- CN113040804B CN113040804B CN202110252950.3A CN202110252950A CN113040804B CN 113040804 B CN113040804 B CN 113040804B CN 202110252950 A CN202110252950 A CN 202110252950A CN 113040804 B CN113040804 B CN 113040804B
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- scanning bed
- movement
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- monitoring
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
-
- 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
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
-
- 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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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
The invention relates to the technical field of CT instruments, in particular to a method for preventing movement of a scanning bed from being out of control, a scanning bed motor adopts a mechanical multi-turn absolute value encoder, and monitoring and voltage monitoring of each movement axis are needed after the scanning bed is electrified, so that the movement of the scanning bed is not out of control when the scanning bed is started up each time, the voltage is unstable or suddenly powered down and electrified again, and the scanning bed can be continuously and normally used without a Home, and is safe and reliable and convenient to use.
Description
Technical Field
The invention relates to the technical field of CT instruments, in particular to a method for preventing movement of a scanning bed from being out of control.
Background
In a scanning bed using a motor of a mechanical multi-turn absolute value encoder, the scanning bed can run away when the voltage is unstable or suddenly drops and then powers up during movement. In order to solve the defect, the prior scanning bed motor uses a single-turn absolute value encoder, so that the problem of movement runaway of the scanning bed when the voltage is unstable or suddenly drops and then is electrified can be solved, but the scheme has the following problems: 1. every time when the machine is started, HOME is needed for each motion axis of the scanning bed (namely, reset to zero); 2. after the voltage is unstable or the power is turned on and off, the current position of the bed cannot be identified, and errors such as position abnormality and the like and safety risks such as movement runaway and the like can occur when the Home is not directly moved.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method for preventing the movement of a scanning bed from being out of control.
In order to achieve the above object, the technical scheme of the present invention is as follows:
the method for preventing the movement of the scanning bed from being out of control comprises the following steps that a scanning bed motor adopts a mechanical multi-turn absolute value encoder, monitoring and voltage monitoring of each movement axis are needed after the scanning bed is electrified, and the monitoring of each movement axis of the scanning bed comprises the following steps:
s1, initializing each motion axis driver to a servo disabling state, and entering a step S2;
s2, reading the movement speed of each movement shaft, and entering a step S3;
s3, judging whether the movement speed of each movement axis is zero, if so, entering a step S4, otherwise, returning to the step S2;
s4, controlling servo enabling opening of each motion axis driver to enable the scanning bed to continue normal use;
the scan bed voltage monitoring comprises the following steps:
the voltage sensor monitors the voltage state in real time, if the measured voltage exceeds the allowable range, a scram control signal is sent to the rapid IO interface of each motion axis driver, the drivers are triggered to control the motor to scram, then step S1 is started, and if the measured voltage is within the allowable range, the scanning bed continues to be used normally.
The invention has the advantages that: compared with the prior art, the method for preventing the movement of the scanning bed from being out of control can use the motor of the mechanical multi-turn absolute value encoder, and the movement of the scanning bed can not be out of control when the scanning bed is started, the voltage is unstable or suddenly powered down and powered up again, and the scanning bed can be continuously and normally used without a Home, and is safe and reliable and convenient to use.
Drawings
FIG. 1 is a block flow diagram of an embodiment of the present invention.
Detailed Description
The present invention is described in further detail below with reference to examples.
In this embodiment, the scanning bed adopts a mechanical multi-turn absolute value encoder, so that each motion axis of the scanning bed can be used without HOME when the scanning bed is started, the voltage is unstable or suddenly powered down and then powered up. The control method comprises two parts, namely monitoring of each motion axis and voltage monitoring.
After the scanning bed is powered on, the monitoring steps of each motion axis are as shown in fig. 1:
s1, initializing each motion axis driver to a servo disabling state, and entering a step S2;
s2, reading the movement speed of each movement shaft, and entering a step S3;
s3, judging whether the movement speed of each movement axis is zero, if so, entering a step S4, otherwise, returning to the step S2;
s4, controlling servo enabling opening of each motion axis driver, so that the scanning bed can continue to be used normally.
After the scanning bed is powered on, the voltage sensor monitors the voltage state of the bed body in real time, if the actually measured voltage exceeds the allowable range, a scram control signal is sent to the rapid IO interface of each motion axis driver, the drivers are triggered to control the motor to scram, then the step S1 is carried out, and if the actually measured voltage is within the allowable range, the scanning bed continues to be normally used.
The above embodiments are only for illustrating the concept of the present invention and not for limiting the protection of the claims of the present invention, and all the insubstantial modifications of the present invention using the concept shall fall within the protection scope of the present invention.
Claims (1)
1. The method for preventing the movement of the scanning bed from being out of control is characterized in that the scanning bed motor adopts a mechanical multi-turn absolute value encoder, and the method is characterized in that the monitoring and the voltage monitoring of each movement axis of the scanning bed are required after the scanning bed is electrified, and the monitoring of each movement axis of the scanning bed comprises the following steps:
s1, initializing each motion axis driver to a servo disabling state, and entering a step S2;
s2, reading the movement speed of each movement shaft, and entering a step S3;
s3, judging whether the movement speed of each movement axis is zero, if so, entering a step S4, otherwise, returning to the step S2;
s4, controlling servo enabling opening of each motion axis driver to enable the scanning bed to continue normal use;
the scan bed voltage monitoring comprises the following steps:
the voltage sensor monitors the voltage state in real time, if the measured voltage exceeds the allowable range, a scram control signal is sent to the rapid IO interface of each motion axis driver, the drivers are triggered to control the motor to scram, then step S1 is started, and if the measured voltage is within the allowable range, the scanning bed continues to be used normally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110252950.3A CN113040804B (en) | 2021-03-09 | 2021-03-09 | Method for preventing movement of scanning bed from being out of control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110252950.3A CN113040804B (en) | 2021-03-09 | 2021-03-09 | Method for preventing movement of scanning bed from being out of control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113040804A CN113040804A (en) | 2021-06-29 |
| CN113040804B true CN113040804B (en) | 2023-10-17 |
Family
ID=76510757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110252950.3A Active CN113040804B (en) | 2021-03-09 | 2021-03-09 | Method for preventing movement of scanning bed from being out of control |
Country Status (1)
| Country | Link |
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| CN (1) | CN113040804B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10233893A (en) * | 1997-02-20 | 1998-09-02 | Ricoh Co Ltd | Servo controller for scanner of image forming device |
| JP2000081910A (en) * | 1998-09-04 | 2000-03-21 | Matsushita Electric Ind Co Ltd | Motor controlling method using absolute value encoder |
| JP2004056858A (en) * | 2002-07-16 | 2004-02-19 | Denso Corp | Motor controller |
| JP2004226823A (en) * | 2003-01-24 | 2004-08-12 | Canon Inc | Scanning device of image forming device |
| JP2004340626A (en) * | 2003-05-13 | 2004-12-02 | Mitsubishi Electric Corp | Absolute position encoder |
| JP2009183027A (en) * | 2008-01-29 | 2009-08-13 | Goyo Electronics Co Ltd | Motor control device |
| CN102052500A (en) * | 2009-11-09 | 2011-05-11 | 项晓明 | Noninvasive type intelligent valve electric device |
| JP2015186847A (en) * | 2014-03-26 | 2015-10-29 | セイコーエプソン株式会社 | Scanner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8692503B2 (en) * | 2009-12-18 | 2014-04-08 | Varian Medical Systems, Inc. | Homing and establishing reference frames for motion axes in radiation systems |
| US9925394B2 (en) * | 2011-06-08 | 2018-03-27 | Varian Medical Systems, Inc. | Automatic health detection for motion axes in medical linear accelerators |
| US9731609B2 (en) * | 2014-04-04 | 2017-08-15 | Dg Systems Llc | Vehicle power sharing and grid connection system for electric motors and drives |
-
2021
- 2021-03-09 CN CN202110252950.3A patent/CN113040804B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10233893A (en) * | 1997-02-20 | 1998-09-02 | Ricoh Co Ltd | Servo controller for scanner of image forming device |
| JP2000081910A (en) * | 1998-09-04 | 2000-03-21 | Matsushita Electric Ind Co Ltd | Motor controlling method using absolute value encoder |
| JP2004056858A (en) * | 2002-07-16 | 2004-02-19 | Denso Corp | Motor controller |
| JP2004226823A (en) * | 2003-01-24 | 2004-08-12 | Canon Inc | Scanning device of image forming device |
| JP2004340626A (en) * | 2003-05-13 | 2004-12-02 | Mitsubishi Electric Corp | Absolute position encoder |
| JP2009183027A (en) * | 2008-01-29 | 2009-08-13 | Goyo Electronics Co Ltd | Motor control device |
| CN102052500A (en) * | 2009-11-09 | 2011-05-11 | 项晓明 | Noninvasive type intelligent valve electric device |
| JP2015186847A (en) * | 2014-03-26 | 2015-10-29 | セイコーエプソン株式会社 | Scanner |
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| Publication number | Publication date |
|---|---|
| CN113040804A (en) | 2021-06-29 |
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