CN105517309B - The anode Rotating speed measring of x ray generator - Google Patents
The anode Rotating speed measring of x ray generator Download PDFInfo
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- CN105517309B CN105517309B CN201410549138.7A CN201410549138A CN105517309B CN 105517309 B CN105517309 B CN 105517309B CN 201410549138 A CN201410549138 A CN 201410549138A CN 105517309 B CN105517309 B CN 105517309B
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Abstract
The present invention relates to the anode Rotating speed measrings of x ray generator, belong to x ray generator technical field.The anode speed detector of x ray generator stops, to alternating current generator output AC power source, to acquire the generated induced voltage signal within the period within a period and measures the frequency of the induced voltage signal to realize the detection of anode rotating speed.The anode Rotating speed measring of the present invention is simply directly, accurately, conveniently, efficiently.
Description
Technical field
The invention belongs to x ray generator technical fields, are related to the Rotating speed measring of the anode of the rotation of x ray generator,
More particularly to the frequency detecting of the induced voltage for the main winding for passing through alternating current generator realizes the anode rotating speed of anode Rotating speed measring
Detection device, anode Rotating speed measring method and the x ray generator for including the anode speed detector.
Background technology
X ray generator extensive utilization in the various devices using X ray, for example, with X ray come the dress of exposure image
It puts, very big influence is generated in Medical Imaging.
Fig. 1 show the basic structure principle schematic of x ray generator.In x ray generator, usually in vacuum
X ray is generated in bulb, x ray generator is mainly including the cathode filament as cathode and the anode for being provided with tungsten target（Namely
Anode target）, cathode filament and anode target are arranged in bulb；In the process of work, cathode filament is energized to generate lamp
Silk electric current（Filament Current）, so as to heat cathode to launch a large amount of electronics, electronics is biased on bulb
High pressure effect under formed electron beam and at a high speed to anode target hit, and then generate X ray.To protect anode, usually using friendship
Galvanic electricity machine drives anode target to rotate, so as to forming rotary anode.Wherein figure 1 illustrate the usually included stators of alternating current generator
（Stator）And rotor（Rotor）.
The rotating speed of the anode of x ray generator for anode and bulb protection important, if anode turn
Fast inadequate, the tungsten target of anode is easily damaged, and the service life of bulb easily greatly shortens.Therefore, x ray generator technical field is always
It is dedicated to the detection of anode rotating speed.
The detection of the anode rotating speed of the x ray generator of the prior art is all that the alternating current of anode rotation is driven by detection
Machine realizes that Fig. 2 show the anode Rotating speed measring principle schematic of the prior art.As shown in Fig. 2, the master of load motor
Winding（Main Winding）It is directly coupled with AC power, the startup winding of load motor（Start Winding,
Referred to as auxiliary winding）It connects with capacitance and couples AC power again, corresponding main winding and start winding, there is provided Rotating speed measring module,
Rotating speed measring module can detect main winding and start whether winding has electric current to pass through.When x ray generator works, if turned
Fast detection module detection has electric current to pass through, and is considered as alternating current generator normal work, assert that anode rotating speed is normal.
But this anode Rotating speed measring method is all difficult to realize in detection motor rotation blockage either measurement motor rotating speed
, also, in case of certain main winding and start winding and have electric current but motor does not turn or in the case that rotating speed is inadequate,
The abnormal of anode rotating speed will not be detected, so as to easily and anode target and bulb is caused to be damaged during the work time.
Invention content
It is an object of the present invention to anode rotating speed more accurate, direct and/or that high pressure generator is effectively detected.
To realize object above or other purposes, the present invention provides following technical scheme.
It is an aspect of this invention to provide that a kind of anode speed detector of x ray generator is provided, the X ray hair
Raw device includes anode and the alternating current generator for anode to be driven to rotate, and the alternating current generator includes rotor and stator, described turn
Main winding is provided on son and starts winding；The anode speed detector includes：
Driving power control module is used to control whether that providing AC power to the alternating current generator exports, wherein
It is configured as stopping within a period to the alternating current generator output AC power source during Rotating speed measring；And
Frequency detection module is used to acquire the generated induced voltage signal within the period and measures the sensing
The frequency of voltage signal.
Anode speed detector according to an embodiment of the invention, wherein, the frequency detection module includes：Signal tune
Circuit is managed, is used to acquiring the main winding and generated induced voltage signal and carries out conditioning processing within the period；
The driving power control module includes switch unit；
The frequency detection module and the driving power control module share a microcontroller, and the microcontroller is used for
The first signal is exported to the switch unit to stop to the alternating current generator output AC power source and at the same time obtaining the sense
The frequency of voltage signal is answered, second signal is further exported after the frequency information is obtained to the switch unit to continue to drive
The alternating current generator.
Specifically, the induced voltage signal is square-wave signal by conditioning processing output.
In the anode speed detector of foregoing description embodiment, during the period was configured as within the period
Only the normal work of the alternating current generator is not influenced to the alternating current generator output AC power source but.
In the anode speed detector of foregoing description embodiment, within the period, the alternating current generator turns
The rotating speed of son does not change substantially.
In the anode speed detector of foregoing description embodiment, optionally, the period is in 30ms to 100ms's
In the range of.
Another aspect according to the invention provides a kind of anode Rotating speed measring method of x ray generator, wherein, it is described
Anode is driven by being provided with main winding on its rotor and starting the alternating current generator of winding；The method includes the steps：
Stop within a period to alternating current generator output AC power source；And
It acquires the generated induced voltage signal within the period and measures the frequency of the induced voltage signal.
Specifically, the period be configured as stopping within the period to the alternating current generator output AC power source but
The normal work of the alternating current generator is not influenced.
Specifically, within the period, the rotating speed of the rotor of the alternating current generator does not change substantially.
Optionally, the period is in the range of 30ms to 100ms.
In one embodiment, the induced voltage signal exports as square-wave signal to carry out the frequency by conditioning processing
Measurement.
Further aspect according to the invention provides a kind of x ray generator, including：
Bulb,
Be arranged in bulb cathode and anode and
For the alternating current generator that anode is driven to rotate；
And further include it is described above and any anode speed detector.
The solution have the advantages that in the short time of direct Ac Dump（Intermission section）Generated sense
Voltage is answered to measure anode rotating speed, can not only quantitatively detect specific rotating speed, can also detect the situation that motor does not turn completely,
The rotating speed of anode is allow accurately and effectively to be monitored or detected；Also, in the short time of Ac Dump, not
It needs additionally to apply test electric signal to main winding, it is not required that wait for the processes such as demagnetization, detection is very convenient, efficient.Therefore,
The anode Rotating speed measring pattern of the embodiment of the present invention does not influence X ray not only to anode rotating speed accurate and effective but also convenience and high-efficiency
The normal work of generator is conducive to protect the anode and bulb of x ray generator.
Description of the drawings
From the following detailed description with reference to attached drawing, it will make the above and other purpose of the present invention and advantage more complete
It is clear, wherein, the same or similar element, which is adopted, to be indicated by the same numeral.
Fig. 1 is the basic structure principle schematic of x ray generator.
Fig. 2 is the anode Rotating speed measring principle schematic of the prior art.
Fig. 3 is the structure diagram according to the anode speed detector of the x ray generator of one embodiment of the invention.
Fig. 4 is the circuit structure embodiment schematic diagram of the anode speed detector of embodiment illustrated in fig. 3.
Specific embodiment
What is be described below is some in multiple possible embodiments of the invention, it is desirable to provide to the basic of the present invention
Solution, it is no intended to confirm the crucial or conclusive element of the present invention or limit scope of the claimed.It is readily appreciated that, according to this
The technical solution of invention, under the connotation for not changing the present invention, those of ordinary skill in the art can propose can be mutual
Other realization methods replaced.Therefore, detailed description below and attached drawing are only the examples to technical scheme of the present invention
Property explanation, and the whole or be considered as being not to be construed as the present invention defines or limits technical solution of the present invention.
Fig. 3 show the structural representation of the anode speed detector according to the x ray generator of one embodiment of the invention
Figure.In the present invention, the detection of anode rotating speed is realized again by detection alternating current generator, still, the principle of detection has been
It is complete different.In the following example, for illustrate the present invention testing principle and Fig. 2 shown in the prior art difference, equally
Example is illustrated with load motor.It should be understood that anode speed detector of the invention and method
Be not limited to the load motor applied to the embodiment of the present invention, art technology after embodiments disclosed below is read,
It can equally be converted and be applied to the other kinds of alternating current generator for being used to that anode to be driven to rotate to detect anode rotating speed.
As shown in figure 3, load motor includes rotor and stator, driven by AC power 110, exchange is being provided
In the case that power supply exports, which can be driven and enter normal operating conditions.It is set on the stator of load motor
There is main winding 121 and start winding 122, coupled between main winding 121 and AC power 110, start winding 122 and be in series with capacitance
123, start winding 122 and capacitance 123 and form parallel-connection structure with main winding 121, be coupled to AC power 110.In the present invention,
Switch unit 311 is provided between main winding 121 and AC power 110 namely between motor and AC power 110, passes through control
Switch unit 311 processed can control whether to provide AC power to the alternating current generator.
Anode speed detector 30 mainly includes driving power control module 31 and frequency detection module 33.Wherein,
A part of the switch unit 311 as driving power control module 31, the control that energy supply control module 31 driven is exported
Signal controls；Frequency detection module 33 can be with 121 coupled in parallel of main winding, so as to easily acquire the sensing of main winding 121
The signal of voltage.
Fig. 4 show the circuit structure embodiment schematic diagram of the anode speed detector of embodiment illustrated in fig. 3.In the reality
It applies in example, anode speed detector 30 mainly includes signal conditioning circuit 331, microcontroller 333 and is placed in alternating current
Switch unit 311 between source and motor；Wherein switch unit 311 mainly include 4 triodes for being divided into two groups, they by
The signal control that microcontroller 333 is sent out；Signal conditioning circuit 331 mainly includes an amplifier, input terminal and output terminal
It is arranged in parallel with respect to main winding 121.
Fig. 3 and the anode speed detector of embodiment illustrated in fig. 4 are such places of working.First, microcontroller 333（
That is driving power control module 31）A signal is exported to switch unit 311, switch unit 311 disconnects, and stops a period of time to friendship
Galvanic electricity machine output AC power source.This time is, for example, 100ms, and AC power is cut off at this time, in this way, due to effect of inertia,
Rotor in motor will continue relative stator rotation, and in a short time（Such as in 100ms）Its rotation speed change is not obvious,
Namely the rotating speed of the rotor of alternating current generator does not change substantially, maintains on the rotating speed of constant, and therefore, stator at this time
Rotating speed base instinct reflection anode rotating speed.Rotor continues rotation and will make remanent magnetism inside main winding cutting motor and generate phase
The induced voltage answered, the induced voltage signal can be immediately by signal conditioning circuits 331（Namely frequency detection module 33）It is examined
It measures, and carries out conditioning processing can more easily measure the frequency of the signal of induced voltage, in this embodiment, signal tune
The signal that reason circuit 331 exports can be, but not limited to as rectangular wave, and the frequency of the rectangular wave corresponds to the frequency of induced voltage signal.
Further, which is input to microcontroller 333, and microcontroller 333 plays frequency measurement function at this time（Namely frequency inspection
Survey the function of module 33）, such as by timer therein come two rising edges of detection cycle rectangular wave or two failing edges
Time interval T, 1/T are frequency, which also reflects the frequency of anode rotating speed substantially, and expression has obtained anode and turned after testing
Fast frequency.Further, microcontroller 333 outputs signal to switch unit 311 to continue to drive alternating current generator.Intermission section knot
Beam completes the process of the anode Rotating speed measring of the embodiment of the present invention.
It is to be appreciated that microcontroller 333 is driving power control module 31 shown in Fig. 3 and frequency detection module 33
It shares, microcontroller 333 can be microcontroller or MCU etc., and concrete type is not limiting.
It is to be appreciated that the period one of the AC power of the period namely cut-out motor of above-described suspension
As be the relatively short period；The length of the period can define in the following manner：In the alternating current of the cut-out motor
In the period in source, the normal work of alternating current generator is substantially unaffected, that is, within the period, alternating current generator turns
The rotating speed of son does not change substantially, and the minor change of rotating speed does not influence the normal work of x ray generator in other words.For example,
The period can select setting in the range of 30ms to 100ms.
It should be understood that in the above description, term " basic " or the industrial quarters for " about " providing corresponding term
Acceptable tolerance.As illustrating, do not change for stator rotating speed " basic ", the public affairs of " basic " offer of term herein
Poor range refers to that the margin of tolerance of stator rotating speed is from less than 0.1% to 1%.
The anode speed detector of embodiment is further applied to x ray generator described in figure 3 above and Fig. 4, with
The x ray generator of the embodiment of the present invention is formed, which is X ray high pressure transmitter.Due to anode Rotating speed measring
Apparatus structure is simple, also relatively small for the improvement of existing x ray generator.
In the anode speed detector and its detection method of more than inventive embodiments, AC power is dexterously utilized and cuts
In disconnected short time（Intermission section）Generated induced voltage measures anode rotating speed, can not only quantitatively detect tool
Body rotating speed can also detect the situation that motor does not turn completely, and the rotating speed of anode is allow accurately and effectively to be monitored or detected；
Also, in the short time of Ac Dump, compared to such as revealed sides of U.S. Patent Publication No. US5883487A
Case does not need to additionally apply test electric signal to main winding, it is not required that demagnetization is waited for, completely without calibration etc., detection
It is very convenient, efficient.Therefore, the anode Rotating speed measring pattern of the embodiment of the present invention not only to anode rotating speed accurate and effective but also
Convenience and high-efficiency does not influence the normal work of x ray generator, is conducive to protect the anode and bulb of x ray generator.
It will be understood that when it is said that by component " connection " or during " coupled " to another component, it can be directly connected to or couple
To another component or there may be intermediate member.
Example above primarily illustrates anode speed detector of the invention, anode Rotating speed measring method and uses it
X ray generator.Although only some of embodiments of the present invention are described, ordinary skill people
Member it is to be appreciated that the present invention can without departing from its spirit with range in the form of many other implement.Therefore, it is shown
Example is considered as illustrative and not restrictive with embodiment, is not departing from this hair as defined in appended claims
In the case of bright spirit and scope, the present invention may cover various modification and replacement.
Claims (12)
1. a kind of anode speed detector of x ray generator, the x ray generator includes anode and for driving sun
The alternating current generator of pole rotation, the alternating current generator include rotor and stator, main winding are provided on the rotor（121）And startup
Winding（122）；It is characterized in that, the anode speed detector（30）Including：
Driving power control module（31）, it is used to control whether to provide AC power output to the alternating current generator, wherein
It is configured as stopping within a period to the alternating current generator output AC power source during Rotating speed measring；And
Frequency detection module（33）, it is used to acquire the generated induced voltage signal within the period and measures the sensing
The frequency of voltage signal.
2. anode speed detector as described in claim 1, which is characterized in that the frequency detection module（33）Including：
Signal conditioning circuit（331）, it is used to acquiring the main winding generated induced voltage signal within the period and goes forward side by side
Row conditioning is handled；
The driving power control module（31）Including switch unit（311）；
The frequency detection module（33）With the driving power control module（31）Share a microcontroller（333）, it is described micro-
Controller（333）For exporting the first signal to the switch unit（311）To stop to export alternating current to the alternating current generator
Source exports second signal to institute and at the same time obtain the frequency of the induced voltage signal, further after the frequency information is obtained
State switch unit（311）To continue to drive the alternating current generator.
3. anode speed detector as described in claim 1, which is characterized in that the induced voltage signal is handled by conditioning
It exports as square-wave signal.
4. anode speed detector as claimed in claim 1 or 2, which is characterized in that the period is configured as at this
Stop to the alternating current generator output AC power source but do not influence the normal work of the alternating current generator in period.
5. anode speed detector as claimed in claim 4, which is characterized in that within the period, the alternating current
The rotating speed of the rotor of machine does not change substantially.
6. anode speed detector as claimed in claim 4, which is characterized in that the period is in 30ms to 100ms's
In the range of.
7. a kind of anode Rotating speed measring method of x ray generator, wherein, the anode on its rotor by being provided with main winding
（121）With startup winding（122）Alternating current generator driving；It is characterized in that, the method includes the steps：
Stop within a period to alternating current generator output AC power source；And
It acquires the generated induced voltage signal within the period and measures the frequency of the induced voltage signal.
8. anode Rotating speed measring method as claimed in claim 7, which is characterized in that the period was configured as in the time
Stop to the alternating current generator output AC power source but do not influence the normal work of the alternating current generator in section.
9. anode Rotating speed measring method as claimed in claim 8, which is characterized in that within the period, the alternating current
The rotating speed of the rotor of machine does not change substantially.
10. anode Rotating speed measring method as claimed in claim 8, which is characterized in that the period is in 30ms to 100ms's
In the range of.
11. anode Rotating speed measring method as claimed in claim 7, which is characterized in that the induced voltage signal is by conditioning
Reason output is square-wave signal to carry out the measurement of the frequency.
12. a kind of x ray generator, including：
Bulb,
Be arranged in bulb cathode and anode and
For the alternating current generator that anode is driven to rotate；
It is characterized in that, it further includes such as anode speed detector according to any one of claims 1 to 6.
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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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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108072770B (en) * | 2016-11-11 | 2020-08-04 | 北京东软医疗设备有限公司 | Anode target rotation frequency detection method, device and equipment |
| 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 |
| CN110488038B (en) * | 2019-08-13 | 2022-03-22 | 博玮科技(北京)有限公司 | Method and device for detecting rotating speed of rotating anode bulb tube rotor |
| 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 |
Citations (4)
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11204073A (en) * | 1998-01-19 | 1999-07-30 | Toshiba Corp | Stator coil driving apparatus for rotating anode x-ray tube |
| JP4306209B2 (en) * | 2002-09-09 | 2009-07-29 | 株式会社日立メディコ | Neutral point ground X-ray generator and X-ray CT apparatus using the same |
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- 2014-10-16 CN CN201410549138.7A patent/CN105517309B/en active Active
Patent Citations (4)
| 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 |
| 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 |
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