CN105517309A - Anode rotating speed detection of X-ray generator - Google Patents
Anode rotating speed detection of X-ray generator Download PDFInfo
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- CN105517309A CN105517309A CN201410549138.7A CN201410549138A CN105517309A CN 105517309 A CN105517309 A CN 105517309A CN 201410549138 A CN201410549138 A CN 201410549138A CN 105517309 A CN105517309 A CN 105517309A
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- rotating speed
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Abstract
The invention relates to anode rotating speed detection of an X-ray generator and belongs to the technical field of X-ray generators. An anode rotating speed detection device of the X-ray generator stops to output alternating-current power to an alternating-current motor in one time period, acquires a sensing voltage signal generated in the time period, and measures frequency of the sensing voltage signal, thereby achieving detection of the anode rotating speed. According to the invention, the anode rotating speed detection is simple, direct, precise, convenient and highly-efficient.
Description
Technical field
The invention belongs to x ray generator technical field, relate to the Rotating speed measring of the anode of the rotation of x ray generator, the frequency detecting particularly relating to the induced voltage of the main winding by alternating current machine realizes the anode speed detector of anode Rotating speed measring, anode Rotating speed measring method and comprises the x ray generator of this anode speed detector.
Background technology
X ray generator extensively uses in the device of various applying X-ray, such as, carrys out the device of exposure image with X ray, produces very large impact at Medical Imaging.
Figure 1 shows that the basic structure principle schematic of x ray generator.In x ray generator, usually in the bulb of vacuum, produce X ray, x ray generator mainly comprise as negative electrode cathode filament and be namely provided with the anode (also plate target) of tungsten target, cathode filament and plate target are all arranged in bulb; In the process of work, cathode filament is energized to produce heater current (FilamentCurrent), thus can heated cathode to launch a large amount of electronics, electronics on bulb form electron beam under the High Pressure that is biased and high speed anode target clashes into, and then produce X ray.For protection anode, usually use alternating current machine to drive plate target to rotate, thus form rotarting anode.Wherein figure 1 illustrate the usually included stator (Stator) of alternating current machine and rotor (Rotor).
The rotating speed of the anode of x ray generator is for the protection important of anode and bulb, if anode rotating speed is inadequate, the tungsten target of anode easily damages, and the life-span of bulb easily shortens greatly.Therefore, x ray generator technical field is devoted to the detection of anode rotating speed always.
The detection of the anode rotating speed of the x ray generator of prior art is all realize by detecting the alternating current machine driving anode to rotate, and Figure 2 shows that the anode Rotating speed measring principle schematic of prior art.As shown in Figure 2, main winding (MainWinding) and the AC power of load motor directly couple, startup winding (the StartWinding of load motor, also referred to as auxiliary winding) couple AC power again with capacitances in series, corresponding main winding and startup winding, be provided with Rotating speed measring module, whether Rotating speed measring module can detect main winding and start winding has electric current to pass through.When x ray generator works, there is electric current to pass through if Rotating speed measring module detects, just think that this alternating current machine normally works, assert that anode rotating speed is normal.
But, this anode Rotating speed measring method is all difficult to realize at detection motor rotation blockage or measurement motor speed, and, but if there occurs certain main winding and start winding have electric current motor not turn or rotating speed is inadequate when, the abnormal of anode rotating speed can not be detected, thus easily and cause plate target and bulb impaired in the course of the work.
Summary of the invention
The object of the invention is to, more accurately, directly and/or effectively detect the anode rotating speed of high pressure generator.
For realizing above object or other objects, the invention provides following technical scheme.
According to an aspect of of the present present invention, a kind of anode speed detector of x ray generator is provided, described x ray generator comprises anode and the alternating current machine for driving anode to rotate, and described alternating current machine comprises rotor and stator, described rotor is provided with main winding and starts winding; Described anode speed detector comprises:
Driving power control module, whether it provides AC power to export to described alternating current machine for controlling, and is wherein configured to stop to described alternating current machine output AC power source within a time period in Rotating speed measring process; And
Frequency detection module, it is for being captured in the induced voltage signal that produces in the described time period and measuring the frequency of this induced voltage signal.
Anode speed detector according to an embodiment of the invention, wherein, described frequency detection module comprises: signal conditioning circuit, and it is for the induced voltage signal that gathers described main winding and produce within the described time period and carry out conditioning process;
Described driving power control module comprises switch element;
Described frequency detection module and described driving power control module share a microcontroller, it is for obtaining the frequency of described induced voltage signal, and for exporting the first signal to described switch element to stop to described alternating current machine output AC power source and to export secondary signal to described switch element after this frequency information of acquisition to continue to drive described alternating current machine.
Particularly, described induced voltage signal is nursed one's health process output is square-wave signal.
In the anode speed detector of described embodiment before, the described time period is configured to stop within this time period to described alternating current machine output AC power source but does not affect the normal work of described alternating current machine.
In the anode speed detector of described embodiment before, within the described time period, the rotating speed of the rotor of described alternating current machine does not change substantially.
In the anode speed detector of described embodiment before, alternatively, the described time period is in the scope of 30ms to 100ms.
According to another aspect of the present invention, provide a kind of anode Rotating speed measring method of x ray generator, wherein, described anode is driven by the alternating current machine its rotor being provided with main winding and startup winding; Described method comprises step:
Stop within a time period to alternating current machine output AC power source; And
Be captured in the described time period induced voltage signal that produces and measure the frequency of this induced voltage signal.
Particularly, the described time period is configured to stop within this time period to described alternating current machine output AC power source but does not affect the normal work of described alternating current machine.
Particularly, within the described time period, the rotating speed of the rotor of described alternating current machine does not change substantially.
Alternatively, the described time period is in the scope of 30ms to 100ms.
In one embodiment, described induced voltage signal is nursed one's health process output for square-wave signal is to carry out the measurement of described frequency.
According to also one side of the present invention, a kind of x ray generator is provided, comprises:
Bulb,
Be arranged on negative electrode and anode in bulb, and
The alternating current machine rotated for driving anode;
And comprise the above and any one anode speed detector.
Technique effect of the present invention is, the induced voltage that in the short time of direct Ac Dump, (intermission section) produces is to measure anode rotating speed, not only can detect concrete rotating speed quantitatively, also can detect the situation that motor does not turn completely, make the rotating speed of anode be monitored accurately and effectively or to detect; Further, in the short time of Ac Dump, do not need additionally to apply the test signal of telecommunication to main winding, do not need to wait for the processes such as demagnetization yet, detect very convenient, efficient.Therefore, anode Rotating speed measring pattern not only antianode rotating speed accurate and effective but also the convenience and high-efficiency of the embodiment of the present invention, does not affect the normal work of x ray generator, is conducive to anode and the bulb of protecting x ray generator.
Accompanying drawing explanation
From following detailed description by reference to the accompanying drawings, will make above and other object of the present invention and advantage more complete clear, wherein, same or analogous key element adopts identical label to represent.
Fig. 1 is the basic structure principle schematic of x ray generator.
Fig. 2 is the anode Rotating speed measring principle schematic of prior art.
Fig. 3 is the structural representation of the anode speed detector of x ray generator according to one embodiment of the invention.
Fig. 4 is the circuit structure embodiment schematic diagram of anode speed detector embodiment illustrated in fig. 3.
Embodiment
Introduce below be of the present invention multiple may some in embodiment, aim to provide basic understanding of the present invention, be not intended to confirm key of the present invention or conclusive key element or limit claimed scope.Easy understand, according to technical scheme of the present invention, do not changing under connotation of the present invention, one of ordinary skill in the art can propose other implementations that can mutually replace.Therefore, following embodiment and accompanying drawing are only the exemplary illustrations to technical scheme of the present invention, and should not be considered as of the present invention all or the restriction be considered as technical solution of the present invention or restriction.
Figure 3 shows that the structural representation of the anode speed detector of the x ray generator according to one embodiment of the invention.In the present invention, realize the detection of anode rotating speed equally by detecting alternating current machine, but its principle detected is diverse.In the following example, for example illustrates the difference of prior art shown in Cleaning Principle of the present invention and Fig. 2, same example is described with load motor.But it should be noted that, anode speed detector of the present invention and method are not limited to the single phase alternating current (A.C.) alternating current machine being applied to the embodiment of the present invention, art technology read following discloses embodiment after, it can be converted equally be applied to other types the alternating current machine being used for driving anode to rotate to detect anode rotating speed.
As shown in Figure 3, load motor comprises rotor and stator, and it is driven by AC power 110, and when providing AC power to export, this motor can be driven and enter normal operating conditions.The stator of cross streams motor be provided with main winding 121 and start winding 122, couple between main winding 121 and AC power 110, start winding 122 and be in series with electric capacity 123, start winding 122 and electric capacity 123 and main winding 121 and form parallel-connection structure, be coupled to AC power 110.In the present invention, between main winding 121 and AC power 110, be also namely provided with switch element 311 between motor and AC power 110, can control whether to provide AC power to described alternating current machine by control switch unit 311.
Anode speed detector 30 mainly comprises driving power control module 31 and frequency detection module 33.Wherein, switch element 311 is as a part for driving power control module 31, and its control signal exported by driving power control module 31 controls; Frequency detection module 33 can with main winding 121 coupled in parallel, thus gather the signal of induced voltage of main winding 121 easily.
Figure 4 shows that the circuit structure embodiment schematic diagram of anode speed detector embodiment illustrated in fig. 3.In this embodiment, anode speed detector 30 switch element 311 that mainly comprises signal conditioning circuit 331, microcontroller 333 and be placed between AC power and motor; Wherein switch element 311 mainly comprises the triode that 4 are divided into two groups, the signal controlling that they are sent by microcontroller 333; Signal conditioning circuit 331 mainly comprises an amplifier, and its input main winding 121 relative to output is arranged in parallel.
Fig. 3 and anode speed detector embodiment illustrated in fig. 4 are such places of working.First, microcontroller 333(is also driving power control module 31) export a signal to switch element 311, switch element 311 disconnects, and stops a period of time to alternating current machine output AC power source.This period is such as 100ms, now AC power is cut off, like this, due to effect of inertia, the rotor in motor will continue relative stator and rotate, and (such as 100ms in) its rotation speed change not obvious at short notice, also namely the rotating speed of the rotor of alternating current machine does not change substantially, maintain on the rotating speed of constant, therefore, the rotating speed of stator now can reflect the rotating speed of anode substantially.The continuation of rotor rotates and will make the inner remanent magnetism of main winding cutting motor and produce corresponding induced voltage, this induced voltage signal can immediately by signal conditioning circuit 331(also i.e. frequency detection module 33) detected by, and carry out conditioning process with the frequency measuring the signal of induced voltage more easily, in this embodiment, the signal that signal conditioning circuit 331 exports can be, but not limited to as square wave, the frequency of the corresponding induced voltage signal of this rectangle wave frequency.Further, this square wave is input to microcontroller 31, microcontroller 31 now plays frequency measurement function (being also the function of frequency detection module 33), the time interval T of sense cycle square wave two rising edges or two trailing edges is such as carried out by timer wherein, 1/T is frequency, this frequency also reflects the frequency of anode rotating speed substantially, represents and obtains anode speed-frequency after testing.Further, microcontroller 31 outputs signal to switch element 311 to continue to drive alternating current machine.Intermission section terminates, and completes the process of the anode Rotating speed measring of the embodiment of the present invention.
It is to be appreciated that microcontroller 31 is shared by the driving power control module 31 shown in Fig. 3 and frequency detection module 33, microcontroller 31 can be single-chip microcomputer or MCU etc., and its particular type is not restrictive.
It is to be appreciated that the time period of above-described termination, the time period of also namely cutting off the AC power of motor is generally the relatively short time period; The length of this time period can define in the following manner: within the time period of the AC power of this cut-out motor, the normal work of alternating current machine is substantially unaffected, also be, within the described time period, the rotating speed of the rotor of alternating current machine does not change substantially, and the minor variations of rotating speed does not affect the normal work of x ray generator in other words.Such as, this time period can be selected to arrange in the scope of 30ms to 100ms.
Should be understood that, in the above description, term " substantially " or " approximately " provide the acceptable tolerance of industrial quarters of corresponding term.Exemplarily illustrate, do not change for stator rotating speed " substantially ", the margin of tolerance that term " substantially " provides herein refers to that the margin of tolerance of stator rotating speed is from being less than 0.1% to 1%.
Described in above Fig. 3 and Fig. 4, the anode speed detector of embodiment is applied to x ray generator further, and to form the x ray generator of the embodiment of the present invention, this x ray generator is X ray high pressure reflector.Because anode speed detector structure is simple, the improvement for existing x ray generator is also relatively little.
In the anode speed detector of above inventive embodiments and detection method thereof, the induced voltage that the short time interior (intermission section) that make use of Ac Dump dexterously produces is to measure anode rotating speed, not only can detect concrete rotating speed quantitatively, also can detect the situation that motor does not turn completely, make the rotating speed of anode be monitored accurately and effectively or to detect; Further, in the short time of Ac Dump, compared to the scheme that such as U.S. Patent Publication No. US5883487A discloses, do not need additionally to apply the test signal of telecommunication to main winding, do not need to wait for demagnetization, do not need calibration etc. completely, detect very convenient, efficient yet.Therefore, anode Rotating speed measring pattern not only antianode rotating speed accurate and effective but also the convenience and high-efficiency of the embodiment of the present invention, does not affect the normal work of x ray generator, is conducive to anode and the bulb of protecting x ray generator.
To understand, when it is said parts " connection " or " coupling " to another parts, it can be directly connected or coupled to another parts maybe can exist intermediate member.
Above example mainly describes anode speed detector of the present invention, anode Rotating speed measring method and uses its x ray generator.Although be only described some of them embodiments of the present invention, those of ordinary skill in the art should understand, and the present invention can implement with other forms many not departing from its purport and scope.Therefore, the example shown and execution mode are regarded as illustrative and not restrictive, when do not depart from as appended each claim define the present invention spirit and scope, the present invention may contain various amendments and replacement.
Claims (12)
1. the anode speed detector of an x ray generator, described x ray generator comprises anode and the alternating current machine for driving anode to rotate, described alternating current machine comprises rotor and stator, described rotor is provided with main winding (121) and starts winding (122); It is characterized in that, described anode speed detector (30) comprising:
Driving power control module (31), whether it provides AC power to export to described alternating current machine for controlling, and is wherein configured to stop to described alternating current machine output AC power source within a time period in Rotating speed measring process; And
Frequency detection module (33), it is for being captured in the induced voltage signal that produces in the described time period and measuring the frequency of this induced voltage signal.
2. anode speed detector as claimed in claim 1, it is characterized in that, described frequency detection module (33) comprising: signal conditioning circuit (331), and it is for the induced voltage signal that gathers described main winding and produce within the described time period and carry out conditioning process;
Described driving power control module (31) comprises switch element (311);
Described frequency detection module (33) and described driving power control module (31) share a microcontroller (313), it is for obtaining the frequency of described induced voltage signal, and for exporting the first signal to described switch element (311) to stop to described alternating current machine output AC power source and export secondary signal to described switch element (311) to continue to drive described alternating current machine after this frequency information of acquisition.
3. anode speed detector as claimed in claim 1, is characterized in that, described induced voltage signal is nursed one's health process and exported as square-wave signal.
4. anode speed detector as claimed in claim 1 or 2, it is characterized in that, the described time period is configured to stop within this time period to described alternating current machine output AC power source but does not affect the normal work of described alternating current machine.
5. anode speed detector as claimed in claim 4, it is characterized in that, within the described time period, the rotating speed of the rotor of described alternating current machine does not change substantially.
6. anode speed detector as claimed in claim 4, it is characterized in that, the described time period is in the scope of 30ms to 100ms.
7. an anode Rotating speed measring method for x ray generator, wherein, described anode is driven by the alternating current machine its rotor being provided with main winding (121) and startup winding (122); It is characterized in that, described method comprises step:
Stop within a time period to alternating current machine output AC power source; And
Be captured in the described time period induced voltage signal that produces and measure the frequency of this induced voltage signal.
8. anode Rotating speed measring method as claimed in claim 7, it is characterized in that, the described time period is configured to stop within this time period to described alternating current machine output AC power source but does not affect the normal work of described alternating current machine.
9. anode Rotating speed measring method as claimed in claim 8, it is characterized in that, within the described time period, the rotating speed of the rotor of described alternating current machine does not change substantially.
10. anode Rotating speed measring method as claimed in claim 8, it is characterized in that, the described time period is in the scope of 30ms to 100ms.
11. anode Rotating speed measring methods as claimed in claim 7, is characterized in that, described induced voltage signal is nursed one's health process and exported as square-wave signal is to carry out the measurement of described frequency.
12. 1 kinds of x ray generators, comprising:
Bulb,
Be arranged on negative electrode and anode in bulb, and
The alternating current machine rotated for driving anode;
It is characterized in that, also comprise the anode speed detector according to any one of claim 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410549138.7A CN105517309B (en) | 2014-10-16 | 2014-10-16 | The anode Rotating speed measring of x ray generator |
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| CN201410549138.7A CN105517309B (en) | 2014-10-16 | 2014-10-16 | The anode Rotating speed measring of x ray generator |
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| CN105517309B CN105517309B (en) | 2018-06-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526216A (en) * | 2016-11-29 | 2017-03-22 | 上海联影医疗科技有限公司 | Method and apparatus for detecting rotating speed of anode target of bulb tube |
| CN108072770A (en) * | 2016-11-11 | 2018-05-25 | 北京东软医疗设备有限公司 | A kind of anode target speed detection method, device and equipment |
| CN110488038A (en) * | 2019-08-13 | 2019-11-22 | 博玮科技(北京)有限公司 | A kind of rotary anode bulb rotor speed detection method and device |
| CN117059460A (en) * | 2023-10-12 | 2023-11-14 | 苏州益腾电子科技有限公司 | Anode target disk protection device and method for X-ray bulb tube |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162242A (en) * | 1996-02-29 | 1997-10-15 | 东芝株式会社 | X-ray device |
| US5883487A (en) * | 1997-07-25 | 1999-03-16 | Continental X-Ray Corporation | Method and apparatus for determining the speed of rotation of an AC motor |
| JPH11204073A (en) * | 1998-01-19 | 1999-07-30 | Toshiba Corp | Stator coil driving apparatus for rotating anode x-ray tube |
| JP2004103345A (en) * | 2002-09-09 | 2004-04-02 | Hitachi Medical Corp | X-ray generating device and x-ray ct device using the same |
| CN102347189A (en) * | 2010-07-28 | 2012-02-08 | 通用电气公司 | Apparatus and method for magnetic control of an electron beam |
| CN203870120U (en) * | 2014-02-25 | 2014-10-08 | 重庆博策科技有限公司 | Generator rotating speed detection controller |
-
2014
- 2014-10-16 CN CN201410549138.7A patent/CN105517309B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162242A (en) * | 1996-02-29 | 1997-10-15 | 东芝株式会社 | X-ray device |
| US5883487A (en) * | 1997-07-25 | 1999-03-16 | Continental X-Ray Corporation | Method and apparatus for determining the speed of rotation of an AC motor |
| JPH11204073A (en) * | 1998-01-19 | 1999-07-30 | Toshiba Corp | Stator coil driving apparatus for rotating anode x-ray tube |
| JP2004103345A (en) * | 2002-09-09 | 2004-04-02 | Hitachi Medical Corp | X-ray generating device and x-ray ct device using the same |
| CN102347189A (en) * | 2010-07-28 | 2012-02-08 | 通用电气公司 | Apparatus and method for magnetic control of an electron beam |
| CN203870120U (en) * | 2014-02-25 | 2014-10-08 | 重庆博策科技有限公司 | Generator rotating speed detection controller |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072770A (en) * | 2016-11-11 | 2018-05-25 | 北京东软医疗设备有限公司 | A kind of anode target speed detection method, device and equipment |
| CN106526216A (en) * | 2016-11-29 | 2017-03-22 | 上海联影医疗科技有限公司 | Method and apparatus for detecting rotating speed of anode target of bulb tube |
| CN106526216B (en) * | 2016-11-29 | 2019-09-17 | 上海联影医疗科技有限公司 | A kind of method and apparatus detecting bulb anode target revolving speed |
| CN110488038A (en) * | 2019-08-13 | 2019-11-22 | 博玮科技(北京)有限公司 | A kind of rotary anode bulb rotor speed detection method and device |
| CN117059460A (en) * | 2023-10-12 | 2023-11-14 | 苏州益腾电子科技有限公司 | Anode target disk protection device and method for X-ray bulb tube |
| CN117059460B (en) * | 2023-10-12 | 2023-12-12 | 苏州益腾电子科技有限公司 | Anode target disk protection device and method for X-ray bulb tube |
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