CN105559782A - Method, device and equipment for controlling moving speed of patient's bed - Google Patents
Method, device and equipment for controlling moving speed of patient's bed Download PDFInfo
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- CN105559782A CN105559782A CN201510973758.8A CN201510973758A CN105559782A CN 105559782 A CN105559782 A CN 105559782A CN 201510973758 A CN201510973758 A CN 201510973758A CN 105559782 A CN105559782 A CN 105559782A
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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Abstract
The invention provides a method, device and equipment for controlling the moving speed of a patient's bed in MRI (magnetic resonance imaging). The method comprises steps as follows: when a patient's bed positioning enabled instruction sent by an operating panel on a bed control system is received, a first speed control instruction is sent to a frequency converter on the bed control system, so that the frequency converter controls the horizontal movement of the patient's bed according to the first speed control instruction; during movement of the patient's bed, the actual displacement of the patient's bed is determined; the actual displacement of the patient's bed is compared with a set displacement point, and the corresponding speed control instruction is determined according to the comparison result; the determined corresponding speed control instruction is sent to the frequency converter, so that the frequency converter controls the moving speed of the patient's bed according to the received corresponding speed control instruction. The actual displacement of the patient's bed is calculated by acquiring the number of pulse signals of an encoder, different speed control instruction are given, the discomfort of a patient is effectively relieved, and the cost and the fault rate of the system are decreased to a large extent.
Description
Technical field
The application relates to medical mr imaging technique field, particularly the control method of patient bed translational speed, device and equipment in a kind of nuclear magnetic resonance.
Background technology
At nuclear magnetic resonance (MRI, MagneticResonanceImaging) in bed Ore-controlling Role, the segmentation speed of patient bed location controls most important for the comfort level of patient, under normal circumstances, the control of segmentation speed is realized by installation site sensor on patient bed, namely control chip is by gathering the positional information of patient bed upper position sensor, send corresponding rate control instruction to speed-regulating control module, so that speed-regulating control module goes to regulate patient bed steady lifting speed according to this rate control instruction, the sense of discomfort that during to alleviate patient bed start and stop and to move, patient perceptions arrives.
But, in MRI bed Ore-controlling Role, the position sensor number that the mode adopting installation position sensor on patient bed to gather the positional information of patient bed actual movement needs is many, the hardware cost of system will certainly be increased, simultaneously, in use, position sensor easily breaks down, and also can increase system failure rate.
Summary of the invention
In view of this, the application provides the control method of patient bed translational speed in a kind of nuclear magnetic resonance, device and equipment, to solve in prior art owing to needing to increase position sensor to realize patient bed segmentation speed governing on patient bed, not only add the hardware cost of system, and also improve system failure rate.
Particularly, the application is achieved by the following technical solution:
First aspect provides the control method of patient bed translational speed in a kind of nuclear magnetic resonance, and described method comprises:
When receiving the patient bed positioning starting instruction that guidance panel on an Ore-controlling Role sends, First Speed control instruction is sent, so that described converter controls patient bed moving horizontally according to described First Speed control instruction to the converter on described bed Ore-controlling Role;
Patient bed to move horizontally described, determine described patient bed actual displacement;
Described patient bed actual displacement and setting displacement point are compared, determines corresponding rate control instruction according to comparative result;
To determine that corresponding described rate control instruction sends to described converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
Second aspect provides the control device of patient bed translational speed in a kind of nuclear magnetic resonance, and described device comprises:
Receiving element, for receiving the instruction of the patient bed positioning starting that guidance panel sends on an Ore-controlling Role;
First transmitting element, during for receiving the instruction of described patient bed positioning starting at described receiving element, sends First Speed control instruction to converter, so that described converter controls patient bed moving horizontally according to described First Speed control instruction;
First determining unit, for patient bed moving horizontally described, determines described patient bed actual displacement;
Comparing unit, for comparing described patient bed actual displacement and setting displacement point;
Second determining unit, for determining corresponding rate control instruction according to the comparative result of described comparing unit;
Second transmitting element, for described second determining unit being determined corresponding described rate control instruction sends to converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
The third aspect provides the control appliance of patient bed translational speed in a kind of nuclear magnetic resonance, and described equipment comprises:
Processor; For storing the memorizer of described processor executable;
Wherein, described processor is configured to:
When receiving the instruction of the patient bed positioning starting that guidance panel sends on an Ore-controlling Role, send First Speed control instruction to converter, so that described converter controls patient bed moving horizontally according to described First Speed control instruction;
Patient bed to move horizontally described, determine described patient bed actual displacement;
Described patient bed actual displacement and setting displacement point are compared, determines corresponding rate control instruction according to comparative result;
To determine that corresponding described rate control instruction sends to converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
In the embodiment of the present application, control chip is when receiving the positioning starting instruction that guidance panel on an Ore-controlling Role sends, patient bed actual displacement is calculated in real time by software, and compare calculating the displacement point set in patient bed actual displacement and software, different rate control instructions is determined according to comparative result, then, different rate control instructions is sent to converter, so that converter controls described patient bed moving horizontally according to different rate control instructions.That is, in the present embodiment, the number of pulse signal is sent by capturing and coding device, calculate patient bed actual displacement (position of the hardware location sensor of namely simulating), adjust patient bed translational speed according to calculating patient bed actual bit in-migration, thus make patient bedly to be respectively low speed, at a high speed, little speed moves horizontally, and not only effectively alleviates the sense of discomfort of patient, meanwhile, hardware cost is also reduced.
Should be understood that, it is only exemplary and explanatory that above general description and details hereinafter describe, and can not limit the application.
Accompanying drawing explanation
Fig. 1 is the flow chart that the embodiment of the present application proposes the control method of patient bed translational speed in a kind of nuclear magnetic resonance;
Fig. 2 is another flow chart that the embodiment of the present application proposes the control method of patient bed translational speed in a kind of nuclear magnetic resonance;
A kind of displacement-speed control curve schematic diagram that Fig. 3 provides for the embodiment of the present application;
Fig. 4 is a kind of hardware structure diagram of the control device place equipment of patient bed translational speed in a kind of nuclear magnetic resonance of the embodiment of the present application proposition;
Fig. 5 is the structural representation that the embodiment of the present application proposes the control device of patient bed translational speed in a kind of nuclear magnetic resonance.
Detailed description of the invention
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with the application.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that some aspects of the application are consistent.
Only for describing the object of specific embodiment at term used in this application, and not intended to be limiting the application." one ", " described " and " being somebody's turn to do " of the singulative used in the application and appended claims is also intended to comprise most form, unless context clearly represents other implications.It is also understood that term "and/or" used herein refer to and comprise one or more project of listing be associated any or all may combine.
Term first, second, third, etc. may be adopted although should be appreciated that to describe various information in the application, these information should not be limited to these terms.These terms are only used for the information of same type to be distinguished from each other out.Such as, when not departing from the application's scope, the first information also can be called as the second information, and similarly, the second information also can be called as the first information.Depend on linguistic context, word as used in this " if " can be construed as into " ... time " or " when ... time " or " in response to determining ".
Refer to Fig. 1, Fig. 1 is the flow chart that the embodiment of the present application proposes the control method of patient bed translational speed in a kind of nuclear magnetic resonance, and described method comprises:
Step 101: when receiving the scanning bed positioning starting instruction that guidance panel on an Ore-controlling Role sends, send First Speed control instruction to converter, so that described converter controls patient bed moving horizontally according to described First Speed control instruction;
In this step, when control chip receives the scanning bed positioning starting instruction sent from bed Ore-controlling Role left and right guidance panel, send First Speed control instruction to the converter in bed Ore-controlling Role, this First Speed control instruction is low speed control instruction, represents with V1.Namely, when patient bed startup, control chip sends low speed control instruction, so that converter is when receiving this low speed control instruction to converter, gated sweep bed moves horizontally with low speed, moving horizontally as at a distance the moving horizontally to magnetic field center from magnetic field in the present embodiment.
Wherein, in this embodiment, the left and right guidance panel of bed Ore-controlling Role to those skilled in the art, has been know technology, has not repeated them here.
Step 102: patient bed to move horizontally described, determine described patient bed actual displacement;
In the embodiment of the present application, control chip can determine patient bed physical location by following manner:
1) control chip sends the number of pulse signal by gathering encoder on described bed Ore-controlling Role;
Because the corresponding patient bed actual displacement of a pulse signal that patient bed frame for movement determines described encoder is definite value; Can be such as 0.33mm, certainly, for different patient bed, the corresponding patient bed actual displacement of an one pulse signal also can be 0.35mm, or 0.30mm, and can be specifically any one value between 0.30mm to 0.35mm, the present embodiment be restricted.
2) control chip sends the actual displacement of the described patient bed movement of number calculating of pulse signal according to described encoder.
Because the displacement of the corresponding patient bed actual movement of each pulse is definite value, so, the number of pulse signal is multiplied by the actual displacement (definite value) that each pulse signal is corresponding patient bed, just can obtains the actual displacement of described patient bed current movement.
Step 103: described patient bed actual displacement and setting displacement point are compared, determines corresponding rate control instruction according to comparative result;
In the embodiment of the present application, the displacement preset is counted and can be set according to actual needs, speed corresponding different after each displacement point, and the present embodiment is to preset three displacement points, namely setting the first displacement point is rise to distance at a high speed by low speed, represents with S1; Second displacement point is by the distance dropping at a high speed low speed, represents with S2: triple motion point is need the distance of again slowing down close to magnet center, represents with S3; The speed of its corresponding first displacement point is low speed (corresponding First Speed control instruction V1), the speed of corresponding second displacement point be high speed ((corresponding second speed control instruction V2), and the speed of corresponding triple motion point is little speed (corresponding third speed control instruction V3).
Its detailed process compared is:
1) control chip judges whether the described patient bed actual displacement determined is more than or equal to the first displacement point, if so, then determines that corresponding rate control instruction is second speed control instruction, represents with V2; Otherwise, keep original speed (namely corresponding with V1 speed) to move horizontally patient bed;
That is, when patient bed actual displacement is more than or equal to the first displacement point, patient bed can moving horizontally at a high speed is described, namely control chip can send High-speed Control instruction to converter, so that the patient bed high speed of carrying out of Frequency Converter Control moves horizontally.
2) control chip continues to judge whether the described patient bed actual displacement determined is more than or equal to the second displacement point, if so, then determines that corresponding rate control instruction is First Speed control instruction, represents with V1; Otherwise, keep original speed (namely corresponding with V2 speed) to move horizontally patient bed;
That is, when patient bed actual displacement is more than or equal to the second displacement point, illustrate that the patient bed reduction of speed that needs moves horizontally, namely control chip can send low speed control instruction to converter, so that the patient bed low speed that carries out of Frequency Converter Control moves horizontally.
3) when control chip continues to judge whether the described patient bed actual displacement determined is more than or equal to triple motion point, if so, then determine that corresponding rate control instruction is third speed control instruction, represent with V3; Otherwise, keep original speed (namely corresponding with V1 speed) to move horizontally patient bed.
That is, when patient bed actual displacement is more than or equal to triple motion point, illustrate patient bed close to magnet center, can again move by retardation level, namely little velocity level is adopted to move, namely control chip can send little rate control instruction to converter, so that the patient bed high speed of carrying out of Frequency Converter Control moves horizontally.
Step 104: will determine that corresponding described rate control instruction sends to converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
Control chip is when determining that described patient bed actual displacement is more than or equal to the first displacement point, the second speed control instruction (representing with V2) determined is sent to converter, so that converter controls patient bed moving horizontally according to described second speed control instruction;
Control chip is when determining that described patient bed actual displacement is more than or equal to the second displacement point, the First Speed control instruction (representing with V1) determined is sent to converter, so that converter controls patient bed moving horizontally according to described First Speed control instruction;
Control chip is when determining that described patient bed actual displacement is more than or equal to triple motion point, the third speed control instruction (representing with V3) determined is sent to converter, so that converter controls patient bed moving horizontally according to described third speed control instruction;
In the embodiment of the present application, control chip is when receiving the positioning starting instruction that guidance panel on an Ore-controlling Role sends, patient bed actual displacement is calculated in real time by software, and compare calculating the displacement point set in patient bed actual displacement and software, different rate control instructions is determined according to comparative result, then, different rate control instructions is sent to converter, so that converter controls described patient bed moving horizontally according to different rate control instructions.That is, in the present embodiment, the number of pulse signal is sent by capturing and coding device, calculate patient bed actual displacement (position of the hardware location sensor of namely simulating), adjust patient bed translational speed according to calculating patient bed actual bit in-migration, thus make patient bed to be respectively low speed, at a high speed, little speed moves horizontally, and not only effectively alleviates the sense of discomfort of patient, meanwhile, hardware cost is also reduced.
Also refer to Fig. 2, another flow chart of the control method of patient bed translational speed in a kind of nuclear magnetic resonance that Fig. 2 provides for the embodiment of the present application, described method comprises:
Step 201: when receiving the patient bed positioning starting instruction that guidance panel on an Ore-controlling Role sends, First Speed control instruction is sent, so that described converter controls patient bed moving horizontally according to described First Speed control instruction to the converter on described bed Ore-controlling Role;
Step 201 is same with step 101, specifically refers to above-mentioned, does not repeat them here.
Step 202: patient bed to move horizontally described, determine described patient bed actual displacement;
Step 202 is same with step 102, specifically refers to above-mentioned, does not repeat them here.
Step 203: described patient bed actual displacement and setting displacement point are compared, determines corresponding rate control instruction according to comparative result;
Step 203 is same with step 103, specifically refers to above-mentioned, does not repeat them here.
Step 204; To determine that corresponding described rate control instruction sends to described converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
Step 204 is same with step 104, specifically refers to above-mentioned, does not repeat them here.
Step 205: patient bed to move horizontally described, detect the state of speed reducing switch and the shutdown switch be arranged on described patient bed bed board;
Step 206: if detect that speed reducing switch is in open mode, then First Speed control instruction is sent to converter, so that converter controls patient bed movement according to described First Speed control instruction; If or detected that shutdown switch is in open mode, then halt instruction would be sent to converter, move so that converter controls patient bed stopping according to described halt instruction.
In this step, speed reducing switch and shutdown switch are referred to as travel switch.
In the patient bed process moved horizontally, detection level position is to the state of two travel switches run near magnet center at any time, if speed reducing switch changes in patient bed operation, namely open mode is in, then no matter patient bed actual displacement is how many, control chip all sends First Speed control instruction (V1) to converter, moves so that converter controls patient bed deceleration according to described First Speed control instruction; If shutdown switch changes in patient bed operation, be namely in open mode, then control chip sends motor halt instruction to converter, moves so that converter controls patient bed stopping according to described halt instruction.
Further, described method can also comprise:
Step 207: after described halt instruction is sent to converter, judges whether described patient bed actual displacement reaches magnet center, if do not reach magnet center, performs step 208, otherwise, perform step 209:
Step 208: display error message;
Step 209: show actual displacement on guidance panel.
In the embodiment of the present application, the number of pulse signal is sent by capturing and coding device, the position of the hardware location sensor simulated, position according to simulating adjusts patient bed translational speed, further, in patient bed moving process, real-time detection is arranged on the state of two travel switches on described patient bed bed board, and according to the state of travel switch, accommodation is carried out to patient bed translational speed, thus make patient bed to be respectively low speed, at a high speed, little speed moves horizontally, or stops mobile; Not only effectively alleviate the sense of discomfort of patient, meanwhile, also reduce hardware cost.
For the ease of the understanding of those skilled in the art, illustrate with concrete example below, it should be noted that, in this embodiment, V1 represents low speed, and V2 represents at a high speed, V0 represents little speed (being less than low speed), S1 represents and rises to distance at a high speed by low speed, and S2 represents by the distance dropping at a high speed low speed, and S3 represents needs the distance of again slowing down close to magnet center.Specifically as shown in Figure 3, a kind of displacement-speed control curve schematic diagram that Fig. 3 provides for the embodiment of the present application, as shown in the figure:
Control chip is when receiving the instruction started from the patient bed location of bed Ore-controlling Role left and right guidance panel, to the converter transmission speed control instruction V1 on bed Ore-controlling Role, converter controls patient bed beginning with rate control instruction V1 (i.e. low speed) and moves horizontally; Simultaneously, control chip starts to gather the pulse signal that the encoder on bed Ore-controlling Role sends, the actual displacement determining the corresponding bed of a pulse of encoder due to patient bed frame for movement is definite value (the present embodiment definite value is for 0.3mm), by the pulse number of capturing and coding device, patient bed actual displacement can be calculated, then when calculating after patient bed actual displacement is more than or equal to S1, control chip is to described converter transmission speed control instruction V2, so that converter controls patient bed moving horizontally with rate control instruction V2 (namely at a high speed); When calculating after patient bed actual displacement is more than or equal to S2, control new chip to converter transmission speed control instruction V1, so that converter controls patient bed moving horizontally with rate control instruction V1 (i.e. low speed); After patient bed displacement is more than or equal to S3, control chip is to converter transmission speed control instruction V0, so that converter controls patient bed moving horizontally with little low speed; When the patient bed actual displacement calculated reaches magnet center (mid_dis), control chip sends motor halt instruction, so that the patient bed stopping of Frequency Converter Control moves horizontally to converter.
Further, move horizontally in process patient bed, to two travel switches run near magnet center, (two travel switches lay respectively on patient bed bed board in control chip real-time detection level position, i.e. speed reducing switch inslow and shutdown switch instop) state, if speed reducing switch (inslow) changes in running, then no matter patient bed actual displacement is how many, control chip is all to converter transmission speed control instruction V1, so that converter controls patient bed moving horizontally with described low speed; If shutdown switch (instop) changes in running, then control chip sends motor halt instruction to converter, moves so that converter controls patient bed stopping according to motor halt instruction; Afterwards, control chip judges whether patient bed actual displacement reaches magnet center (mid_dis) again, does not reach as crossed, display error message; If reached, then on guidance panel, show actual displacement.
Corresponding with the embodiment of the control method of translational speed patient bed in aforementioned nuclear magnetic resonance, present invention also provides the embodiment of the control device of patient bed translational speed in nuclear magnetic resonance.
In the application's nuclear magnetic resonance, the embodiment of the control device of patient bed translational speed can be applied on equipment.Device embodiment can pass through software simulating, also can be realized by the mode of hardware or software and hardware combining.For software simulating, as the device on a logical meaning, be by the processor of its place equipment, computer program instructions corresponding in nonvolatile memory is read operation in internal memory to be formed.Say from hardware view, as shown in Figure 4, for a kind of hardware structure diagram of the control device place equipment of patient bed translational speed in a kind of nuclear magnetic resonance that the embodiment of the present application proposes, except the processor shown in Fig. 4, internal memory, network interface and nonvolatile memory, in embodiment, the equipment at device place is usually according to the actual functional capability of this equipment, other hardware can also be comprised, this is repeated no more.
Please refer to Fig. 4, be a kind of hardware structure diagram of the control device place equipment of translational speed patient bed in the application's nuclear magnetic resonance, comprise: processor; For storing the memorizer of described processor executable;
Wherein, described processor is configured to:
When receiving the instruction of the patient bed positioning starting that guidance panel sends on an Ore-controlling Role, send First Speed control instruction to converter, so that described converter controls patient bed moving horizontally according to described First Speed control instruction;
Patient bed to move horizontally described, determine described patient bed actual displacement;
Described patient bed actual displacement and setting displacement point are compared, determines corresponding rate control instruction according to comparative result;
To determine that corresponding described rate control instruction sends to converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
In another embodiment, processor patient bed to move horizontally described, calculates described patient bed actual displacement and comprises:
Patient bed to move horizontally described, the encoder gathered on described bed Ore-controlling Role sends the number of pulse signal, the corresponding patient bed actual displacement of a pulse signal of described encoder is definite value;
The actual displacement of the described patient bed movement of number calculating of pulse signal is sent according to described encoder.
In another embodiment, the number sending pulse signal according to described encoder described in processor calculates the actual displacement of described patient bed movement and comprises:
The number of described pulse signal is multiplied by the actual displacement that each pulse signal is corresponding patient bed, obtains the actual displacement of described patient bed current movement.
In another embodiment, described in processor, the displacement point of described patient bed actual displacement and setting is compared, determines corresponding rate control instruction according to comparative result, comprising:
Judge whether the described patient bed actual displacement determined is more than or equal to the first displacement point, if so, then determine that corresponding rate control instruction is second speed control instruction; Wherein, described first displacement point is rise to distance at a high speed by low speed;
When judging that the described patient bed actual displacement determined is more than or equal to the second displacement point, if so, then determine that corresponding rate control instruction is First Speed control instruction; Wherein, described second displacement point is by the distance dropping at a high speed low speed;
When judging that the described patient bed actual displacement determined is more than or equal to triple motion point, if so, then determine that corresponding rate control instruction is third speed control instruction; Wherein, described triple motion point is the distance that close magnet center needs again to slow down.
In another embodiment, described in processor, will determine that corresponding described rate control instruction sends to described converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control, comprise:
When described patient bed actual displacement is more than or equal to the first displacement point, the described second speed control instruction determined is sent to described converter, so that described converter is according to the speed receiving the described patient bed movement of described second speed control instruction control; Or
When described patient bed actual displacement is more than or equal to the second displacement point, the described First Speed control instruction determined is sent to described converter, so that described converter is according to the speed receiving the described patient bed movement of described First Speed control instruction control; Or
When described patient bed actual displacement is more than or equal to triple motion point, the described third speed control instruction determined is sent to described converter, so that described converter is according to the speed receiving the described patient bed movement of described third speed control instruction control.
In another embodiment, processor also for patient bed moving horizontally described, detects the state of speed reducing switch and the shutdown switch be arranged on described patient bed bed board;
If detect that speed reducing switch is in open mode, then First Speed control instruction is sent to converter, so that converter controls patient bed movement according to described First Speed control instruction;
If detect that shutdown switch is in open mode, then halt instruction is sent to converter, move so that converter controls patient bed stopping according to described halt instruction.
In another embodiment, processor, also about after described halt instruction is sent to converter, judges whether described patient bed actual displacement reaches magnet center, if do not reach magnet center, then points out error message.
Also refer to Fig. 5, provide the structural representation of the control device of patient bed translational speed in a kind of nuclear magnetic resonance for the application, described device comprises: receiving element 51, first transmitting element 52, first determining unit 53, comparing unit 54, second determining unit 55 and the second transmitting element 56, wherein
Receiving element 51, for receiving the instruction of the patient bed positioning starting that guidance panel sends on an Ore-controlling Role;
First transmitting element 52, for when described receiving element 51 receives the instruction of described patient bed positioning starting, sends First Speed control instruction to converter, so that described converter controls patient bed moving horizontally according to described First Speed control instruction;
First determining unit 53, for patient bed moving horizontally described, determines described patient bed actual displacement;
Comparing unit 54, for comparing described patient bed actual displacement and setting displacement point;
Second determining unit 55, for determining corresponding rate control instruction according to the comparative result of described comparing unit 54;
Second transmitting element 56, for described second determining unit 55 being determined corresponding described rate control instruction sends to converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
In another optional embodiment, described first determining unit 53 comprises: collecting unit and computing unit (not shown), wherein,
Collecting unit, in described patient bed movement, gathers encoder on described bed Ore-controlling Role and sends the number of pulse signal;
Computing unit, the number for sending pulse signal according to described encoder calculates the actual displacement of described patient bed movement.
In another optional embodiment, described computing unit, specifically for the number of described pulse signal being multiplied by actual displacement corresponding to each pulse signal, obtains the actual displacement of described patient bed current movement.
In another optional embodiment, described comparing unit 54, comprising: the first judging unit, the second judging unit and the 3rd judging unit (not shown), wherein,
First judging unit, for judging whether described patient bed actual displacement is more than or equal to the first displacement point; Wherein, described first displacement point is rise to distance at a high speed by low speed;
Second judging unit, for judging whether described patient bed actual displacement is more than or equal to the second displacement point, wherein, described second displacement point is by the distance dropping at a high speed low speed;
3rd judging unit, for judging whether described patient bed actual displacement is more than or equal to triple motion point, wherein, described triple motion point is the distance that close magnet center needs again to slow down,
It should be noted that, the first judging unit in this embodiment, the second judging unit and the 3rd judging unit can integrate, and also can independently dispose, the present embodiment does not limit.
In another optional embodiment, described second determining unit 55 comprises: First Speed instruction-determining unit, First Speed instruction-determining unit and First Speed instruction-determining unit (not shown), wherein,
First Speed instruction-determining unit, for when described first judging unit judges that described patient bed actual displacement is more than or equal to the first displacement point, determines that corresponding rate control instruction is second speed control instruction;
Second speed instruction-determining unit, for when described second judging unit judges that described patient bed actual displacement is more than or equal to the second displacement point, determines that corresponding rate control instruction is First Speed control instruction;
Third speed instruction-determining unit, for when described 3rd judging unit judges that described patient bed actual displacement is more than or equal to triple motion point, determines that corresponding rate control instruction is third speed control instruction.
It should be noted that, the First Speed instruction-determining unit in this embodiment, second speed instruction-determining unit and third speed instruction-determining unit can integrate, and also can independently dispose, the present embodiment does not limit.
In another optional embodiment, described second transmitting element 56 comprises: the first instruction sending unit, the first instruction sending unit and the first instruction sending unit (not shown), wherein,
First instruction sending unit, described second speed control instruction for being determined by described First Speed instruction-determining unit sends to described converter, so that described converter is according to the speed receiving the described patient bed movement of described second speed control instruction control; Or
Second instruction sending unit, described First Speed control instruction for being determined by described second speed instruction-determining unit sends to described converter, so that described converter is according to the speed receiving the described patient bed movement of described First Speed control instruction control; Or
3rd instruction sending unit, described third speed control instruction for being determined by described third speed instruction-determining unit sends to described converter, so that described converter is according to the speed receiving the described patient bed movement of described third speed control instruction control.
It should be noted that, the first instruction sending unit in this embodiment, the second instruction sending unit and the 3rd instruction sending unit can integrate, and also can independently dispose, the present embodiment does not limit.
In another optional embodiment, described device can also comprise: detecting unit, the 3rd transmitting element and the 4th transmitting element, wherein,
Detecting unit, for patient bed moving horizontally described, detects the state of speed reducing switch and the shutdown switch be arranged on described patient bed bed board;
3rd transmitting element, for when described detecting unit detects that speed reducing switch is in open mode, sends to converter by First Speed control instruction, so that converter controls patient bed movement according to described First Speed control instruction;
4th transmitting element, for when described detecting unit detects that shutdown switch is in open mode, sends to converter by halt instruction, moves so that converter controls patient bed stopping according to described halt instruction.
In another optional embodiment, described device can also comprise: the 4th judging unit and Tip element, wherein,
4th judging unit, for after described halt instruction is sent to converter by described 4th transmitting element, judges whether described patient bed actual displacement reaches magnet center;
Tip element, for when described 4th judging unit judges that described patient bed actual displacement does not reach magnet center, prompting error message.
In said apparatus, the implementation procedure of the function and efficacy of unit specifically refers to the implementation procedure of corresponding step in said method, does not repeat them here.
For device embodiment, because it corresponds essentially to embodiment of the method, so relevant part illustrates see the part of embodiment of the method.Device embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple NE.Some or all of module wherein can be selected according to the actual needs to realize the object of the application's scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, within all spirit in the application and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the application protects.
Claims (15)
1. the control method of patient bed translational speed in nuclear magnetic resonance, is characterized in that, comprising:
When receiving the patient bed positioning starting instruction that guidance panel on an Ore-controlling Role sends, First Speed control instruction is sent, so that described converter controls patient bed moving horizontally according to described First Speed control instruction to the converter on described bed Ore-controlling Role;
Patient bed to move horizontally described, determine described patient bed actual displacement;
Described patient bed actual displacement and setting displacement point are compared, determines corresponding rate control instruction according to comparative result;
To determine that corresponding described rate control instruction sends to described converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
2. method according to claim 1, is characterized in that, describedly patient bed to move horizontally described, calculates described patient bed actual displacement and comprises:
Patient bed to move horizontally described, the encoder gathered on described bed Ore-controlling Role sends the number of pulse signal, the corresponding patient bed actual displacement of a pulse signal of described encoder is definite value;
The actual displacement of the described patient bed movement of number calculating of pulse signal is sent according to described encoder.
3. method according to claim 2, is characterized in that, the described actual displacement sending the described patient bed movement of number calculating of pulse signal according to described encoder comprises:
The number of described pulse signal is multiplied by the actual displacement that each pulse signal is corresponding patient bed, obtains the actual displacement of described patient bed current movement.
4. the method according to any one of claims 1 to 3, is characterized in that, the described displacement point by described patient bed actual displacement and setting compares, and determines corresponding rate control instruction, comprising according to comparative result:
Judge whether the described patient bed actual displacement determined is more than or equal to the first displacement point, if so, then determine that corresponding rate control instruction is second speed control instruction; Wherein, described first displacement point is rise to distance at a high speed by low speed;
When judging that the described patient bed actual displacement determined is more than or equal to the second displacement point, if so, then determine that corresponding rate control instruction is First Speed control instruction; Wherein, described second displacement point is by the distance dropping at a high speed low speed;
When judging that the described patient bed actual displacement determined is more than or equal to triple motion point, if so, then determine that corresponding rate control instruction is third speed control instruction; Wherein, described triple motion point is the distance that close magnet center needs again to slow down.
5. method according to claim 4, it is characterized in that, describedly will determine that corresponding described rate control instruction sends to described converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control, comprise:
When described patient bed actual displacement is more than or equal to the first displacement point, the described second speed control instruction determined is sent to described converter, so that described converter is according to the speed receiving the described patient bed movement of described second speed control instruction control; Or
When described patient bed actual displacement is more than or equal to the second displacement point, the described First Speed control instruction determined is sent to described converter, so that described converter is according to the speed receiving the described patient bed movement of described First Speed control instruction control; Or
When described patient bed actual displacement is more than or equal to triple motion point, the described third speed control instruction determined is sent to described converter, so that described converter is according to the speed receiving the described patient bed movement of described third speed control instruction control.
6. the method according to any one of claims 1 to 3, is characterized in that, also comprises:
Patient bed to move horizontally described, detect the state of speed reducing switch and the shutdown switch be arranged on described patient bed bed board;
If detect that speed reducing switch is in open mode, then First Speed control instruction is sent to converter, so that converter controls patient bed movement according to described First Speed control instruction;
If detect that shutdown switch is in open mode, then halt instruction is sent to converter, move so that converter controls patient bed stopping according to described halt instruction.
7. method according to claim 6, is characterized in that, also comprises:
After described halt instruction is sent to converter, judge whether described patient bed actual displacement reaches magnet center, if do not reach magnet center, then points out error message.
8. the control device of patient bed translational speed in nuclear magnetic resonance, is characterized in that, comprising:
Receiving element, for receiving the instruction of the patient bed positioning starting that guidance panel sends on an Ore-controlling Role;
First transmitting element, during for receiving the instruction of described patient bed positioning starting at described receiving element, sends First Speed control instruction to converter, so that described converter controls patient bed moving horizontally according to described First Speed control instruction;
First determining unit, for patient bed moving horizontally described, determines described patient bed actual displacement;
Comparing unit, for comparing described patient bed actual displacement and setting displacement point;
Second determining unit, for determining corresponding rate control instruction according to the comparative result of described comparing unit;
Second transmitting element, for described second determining unit being determined corresponding described rate control instruction sends to converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
9. device according to claim 8, is characterized in that, described first determining unit comprises:
Collecting unit, in described patient bed movement, gathers encoder on described bed Ore-controlling Role and sends the number of pulse signal;
Computing unit, the number for sending pulse signal according to described encoder calculates the actual displacement of described patient bed movement.
10. device according to claim 9, is characterized in that, described computing unit, specifically for the number of described pulse signal being multiplied by actual displacement corresponding to each pulse signal, obtains the actual displacement of described patient bed current movement.
Device described in 11. any one of according to Claim 8 to 10, is characterized in that,
Described comparing unit, comprising:
First judging unit, for judging whether described patient bed actual displacement is more than or equal to the first displacement point; Wherein, described first displacement point is rise to distance at a high speed by low speed;
Second judging unit, for judging whether described patient bed actual displacement is more than or equal to the second displacement point, wherein, described second displacement point is by the distance dropping at a high speed low speed;
3rd judging unit, for judging whether described patient bed actual displacement is more than or equal to triple motion point, wherein, described triple motion point is the distance that close magnet center needs again to slow down;
Described second determining unit comprises:
First Speed instruction-determining unit, for when described first judging unit judges that described patient bed actual displacement is more than or equal to the first displacement point, determines that corresponding rate control instruction is second speed control instruction;
Second speed instruction-determining unit, for when described second judging unit judges that described patient bed actual displacement is more than or equal to the second displacement point, determines that corresponding rate control instruction is First Speed control instruction;
Third speed instruction-determining unit, for when described 3rd judging unit judges that described patient bed actual displacement is more than or equal to triple motion point, determines that corresponding rate control instruction is third speed control instruction.
12. devices according to claim 11, is characterized in that, described second transmitting element comprises:
First instruction sending unit, described second speed control instruction for being determined by described First Speed instruction-determining unit sends to described converter, so that described converter is according to the speed receiving the described patient bed movement of described second speed control instruction control; Or
Second instruction sending unit, described First Speed control instruction for being determined by described second speed instruction-determining unit sends to described converter, so that described converter is according to the speed receiving the described patient bed movement of described First Speed control instruction control; Or
3rd instruction sending unit, described third speed control instruction for being determined by described third speed instruction-determining unit sends to described converter, so that described converter is according to the speed receiving the described patient bed movement of described third speed control instruction control.
Device described in 13. any one of according to Claim 8 to 10, is characterized in that, also comprise:
Detecting unit, for patient bed moving horizontally described, detects the state of speed reducing switch and the shutdown switch be arranged on described patient bed bed board;
3rd transmitting element, for when described detecting unit detects that speed reducing switch is in open mode, sends to converter by First Speed control instruction, so that converter controls patient bed movement according to described First Speed control instruction;
4th transmitting element, for when described detecting unit detects that shutdown switch is in open mode, sends to converter by halt instruction, moves so that converter controls patient bed stopping according to described halt instruction.
14. devices according to claim 13, is characterized in that, also comprise:
4th judging unit, for after described halt instruction is sent to converter by described 4th transmitting element, judges whether described patient bed actual displacement reaches magnet center;
Tip element, for when described 4th judging unit judges that described patient bed actual displacement does not reach magnet center, prompting error message.
The control appliance of patient bed translational speed in 15. 1 kinds of nuclear magnetic resonances, is characterized in that, comprising:
Processor; For storing the memorizer of described processor executable;
Wherein, described processor is configured to:
When receiving the instruction of the patient bed positioning starting that guidance panel sends on an Ore-controlling Role, send First Speed control instruction to converter, so that described converter controls patient bed moving horizontally according to described First Speed control instruction;
Patient bed to move horizontally described, determine described patient bed actual displacement;
Described patient bed actual displacement and setting displacement point are compared, determines corresponding rate control instruction according to comparative result;
To determine that corresponding described rate control instruction sends to converter, so that described converter is according to the speed receiving the corresponding described patient bed movement of described rate control instruction control.
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| CN201510973758.8A CN105559782A (en) | 2015-12-22 | 2015-12-22 | Method, device and equipment for controlling moving speed of patient's bed |
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| CN201510973758.8A CN105559782A (en) | 2015-12-22 | 2015-12-22 | Method, device and equipment for controlling moving speed of patient's bed |
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Address after: 110167 No. 177-1 Innovation Road, Hunnan District, Shenyang City, Liaoning Province Applicant after: DongSoft Medical System Co., Ltd. Address before: Hunnan New Century Road 110179 Shenyang city of Liaoning Province, No. 16 Applicant before: Dongruan Medical Systems Co., Ltd., Shenyang |
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