CN106526216B - A kind of method and apparatus detecting bulb anode target revolving speed - Google Patents
A kind of method and apparatus detecting bulb anode target revolving speed Download PDFInfo
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- CN106526216B CN106526216B CN201611074140.9A CN201611074140A CN106526216B CN 106526216 B CN106526216 B CN 106526216B CN 201611074140 A CN201611074140 A CN 201611074140A CN 106526216 B CN106526216 B CN 106526216B
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- anode target
- bulb
- revolving speed
- speed
- target revolving
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
Abstract
The invention discloses a kind of method and apparatus for detecting bulb anode target revolving speed.The method of detection bulb anode target revolving speed according to the present invention includes: the acquisition data for obtaining and being scanned using bulb；The rotational spectrum and intensity distribution of bulb anode target are obtained according to acquisition data；Anode target speed is extracted from the rotational spectrum of bulb anode target and intensity distribution, and anode target revolving speed is obtained according to speed.The present invention provides a kind of methods for detecting bulb anode target revolving speed; it can detect anode target revolving speed in advance; it is played in actual scanning and predicts bulb failure while protection to bulb; and judge whether Current Scan parameter is reasonable, prevent the slow-speed of revolution from carrying out the case where high power unwrapping wire causes anode target to damage.Moreover, the present invention carries out frequency spectrum from raw data and intensive analysis obtains anode target speed conditions, to be not easy the technical issues of detecting under the conditions of solving the anode target revolving speed prior art.
Description
Technical field
The present invention relates to computed tomography fields, more particularly to a kind of detection ct apparatus bulb sun
The method and device of pole target revolving speed.
Background technique
Computed tomography (CT) is to be irradiated with X-ray from a certain selected tomography level of multiple directions, and measurement is saturating
The amount of x-ray crossed calculates the absorption coefficient of each unit volume of level tissue by computer after digitlization, then rebuild figure
A kind of technology of picture.
Power or energy when computed tomography bulb exposes is higher, needs to drive anode target to certain turn
Speed, preventing focus, focusing on target surface same position leads to target surface hot-spot for a long time, causes target surface material melts, target surface damage
It is bad.
After the design scheme of target surface material and bulb determines, the maximum scan power supported under the different revolving speed of anode target
It is different.Anode target rotation is faster, and the scan power of support is higher.And the service life of bulb bearing and the revolving speed of anode target have directly
The relationship connect, bulb anode target are in that high-revolving ratio is higher, and bulb bearing life is shorter.It can comprehensively consider when tube design
Determine the maximum (top) speed and maximum scan power of bulb.When actual scanning, anode target usually works under a certain constant revolving speed.
But with the increase for using the time, bearing can gradually aging, the abrasion of metal balls lubriation material causes bearing friction power to increase
Greatly.When bulb is close to when failure, influence of the bearing aging to anode target revolving speed can be more obvious, actual so as to cause anode target
Revolving speed and rotating speed of target deviation gradually increase.Further, in actual use, anode target work at the low rotational speed is kept as possible
Make, when only carrying out high power scanning, then anode target is switched to high-speed mode, after the completion of scanning, then is reduced to low speed, thus
Improve the service life of bulb bearing.But for the bulb using multiple revolving speed schemes, in fact it could happen that carried out under the slow-speed of revolution high-power
The abnormal conditions of scanning.
Thus in actual use, effectively anode target revolving speed is detected, is supervisory control system running state and progress
The important channel of quality control.But in the prior art, the revolving speed of anode target is not easy to detect, and it is even more impossible to effectively according to anode target
Rotation speed change predicts service life of bulb bearing.
Summary of the invention
In view of the above drawbacks of the prior art, technical problem to be solved by the invention is to provide a kind of detection bulb sun
The method of pole target revolving speed can detect anode target revolving speed in advance, and judge whether Current Scan parameter is reasonable, prevents the slow-speed of revolution
The case where high power unwrapping wire causes anode target to damage is carried out, and further realizes according to anode target revolving speed and predicts bulb bearing
Service life.
To achieve the above object, the present invention provides a kind of methods for detecting bulb anode target revolving speed, comprising: the first step
It is rapid: to be scanned using bulb, and obtain the acquisition data being scanned using bulb；Obtain the rotation of bulb anode target
Frequency spectrum and intensity distribution；Anode target speed is extracted, from the rotational spectrum of bulb anode target and intensity distribution with analysis
The variation tendency of anode target revolving speed.
According to one embodiment of present invention, Fast Fourier Transform (FFT) is carried out to obtain bulb anode target to acquisition data
Rotational spectrum and intensity distribution.
According to one embodiment of present invention, to acquisition after obtaining the acquisition data being scanned using bulb
Data are pre-processed.
According to one embodiment of present invention, it is predicted according to out-of-service time of the anode target revolving speed to bulb.
According to one embodiment of present invention, in four steps, carry out the mistake to bulb in conjunction with the acquisition data that history is accumulated
The effect time is predicted.
According to one embodiment of present invention, in four steps, according to the rotational spectrum and intensity distribution of bulb anode target
The fall and/or noise frequency amplitude of the frequency of the anode target of middle display predicts the out-of-service time of bulb.
According to one embodiment of present invention, it in the method for the detection bulb anode target revolving speed, is accumulated in conjunction with history
Acquisition data the out-of-service time of bulb predicted.
According to one embodiment of present invention, in the method for the detection bulb anode target revolving speed, the scanning is empty
Gas correct scan.
According to one embodiment of present invention, in the method for the detection bulb anode target revolving speed, the scanning is fixed
Position is as scanning.
According to one embodiment of present invention, in the method for the detection bulb anode target revolving speed, the pretreatment is
Remove processing and/or the normalizeds such as the noise in the data of acquisition.
To achieve the above object, the present invention also provides a kind of devices for detecting bulb anode target revolving speed, comprising: acquisition number
According to acquiring unit, for obtaining the acquisition data being scanned using bulb；Frequency spectrum and intensity distribution acquiring unit, are used for
The rotational spectrum and intensity distribution of bulb anode target are obtained according to acquisition data；Analysis of trend unit, for positive from bulb
Anode target speed is extracted in the rotational spectrum and intensity distribution of pole target, anode target revolving speed is obtained according to speed.
The present invention provides a kind of methods for detecting bulb anode target revolving speed as a result, can detect anode target in advance and turn
Speed plays in actual scanning and predicts bulb failure while protection to bulb, and judges whether Current Scan parameter closes
Reason prevents the slow-speed of revolution from carrying out the case where high power unwrapping wire causes anode target to damage.The present invention carries out frequency spectrum and strong from raw data
Degree analysis obtains anode target speed conditions, asks to solve the technology that anode target revolving speed is not easy to detect under prior art conditions
Topic, and the service life for predicting bulb bearing is furthermore achieved according to anode target revolving speed.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is the flow chart of the method for detection bulb anode target revolving speed according to the preferred embodiment of the invention.
Fig. 2 is before the method bulb obtained of detection bulb anode target revolving speed according to the preferred embodiment of the invention fails
The testing result schematic diagram of anode target speed before seven days.
Fig. 3 is before the method bulb obtained of detection bulb anode target revolving speed according to the preferred embodiment of the invention fails
The testing result schematic diagram of anode target speed before four days.
Fig. 4 is that the method bulb failure obtained of detection bulb anode target revolving speed according to the preferred embodiment of the invention is worked as
The testing result schematic diagram of its anode target speed.
Fig. 5 is the functional block diagram of the device of detection bulb anode target revolving speed according to the preferred embodiment of the invention.
It should be noted that attached drawing is not intended to limit the present invention for illustrating the present invention.Note that indicating that the attached drawing of structure can
It can be not necessarily drawn to scale.Also, in attached drawing, same or similar element indicates same or similar label.
Specific embodiment
Fig. 1 is the flow chart of the method for detection bulb anode target revolving speed according to the preferred embodiment of the invention.
Specifically, as shown in Figure 1, the method packet of detection bulb anode target revolving speed according to the preferred embodiment of the invention
It includes:
First step S1: the acquisition data being scanned using bulb are obtained；In this step, can be used for example
Bulb is scanned to obtain the acquisition data being scanned using bulb；Alternatively, can also be by reading pre-stored data side
Formula obtains acquisition data.
Wherein, the initial data that first step S1 scanning generates is binary data, is not direct bulb rotary speed data.
For example, being scanned using detector using bulb, and obtain in detector edge module in first step S1
Initial data.
Wherein, the scanning of first step S1 can be Air correction scanning or can be positioning as scanning.Alternatively,
The scanning of first step S1 can also meet other clinical scan protocols.
Second step S2: acquisition data are pre-processed；
Preferably, for example, the pretreatment is noise in the data of removal acquisition etc. and/or normalized etc.
Reason.
It should be noted that second step is pre-processed not necessarily step to acquisition data, in some cases
The step can be skipped.
Third step S3: the rotational spectrum and intensity distribution of bulb anode target are obtained；
Specifically, acquisition data can be carried out with Fast Fourier Transform (FFT) to obtain the rotational spectrum of bulb anode target and strong
Degree distribution；In the case where carrying out pretreated situation to acquisition data, Fast Fourier Transform (FFT) is carried out to pretreated acquisition data
To obtain the rotational spectrum and intensity distribution of bulb anode target.
Four steps S4: anode target speed, root are extracted from the rotational spectrum of bulb anode target and intensity distribution
Anode target revolving speed is obtained according to speed.In such manner, it is possible in advance detect anode target revolving speed, played in actual scanning to bulb into
Prediction bulb failure while row protection, and judge whether Current Scan parameter is reasonable, prevent the slow-speed of revolution from carrying out high power unwrapping wire
The case where causing anode target to damage.As can be seen that the present invention carries out frequency spectrum from raw data and intensive analysis obtains anode target and turns
Fast situation, to be not easy the technical issues of detecting under the conditions of solving the anode target revolving speed prior art.
Preferably, in four steps S4: being predicted according to out-of-service time of the anode target revolving speed to bulb.This hair as a result,
It is bright that the service life for predicting bulb bearing is furthermore achieved according to anode target revolving speed.
Preferably, in four steps S4, when carrying out the failure to bulb in conjunction with empirical data (the acquisition data that history is accumulated)
Between predicted.
Specifically, the rated speed of bulb should be a fixed rotating speed value, if bulb bearing failure, the general phase of revolving speed
It is less than normal than normal value；Thus, it is possible to according to the historical data for the accumulation for obtaining the acquisition data being scanned using bulb
Variation tendency, the out-of-service time of bulb is predicted in advance.Moreover, for example, in specific implementation, the analysis of variation tendency
It can use statistical analysis to obtain.
Correspondingly, Fig. 5 is the functional block diagram of the device of detection bulb anode target revolving speed according to the preferred embodiment of the invention.
As shown in figure 5, the present invention also provides a kind of dresses for detecting bulb anode target revolving speed in another preferred embodiment of the invention
It sets, comprising: acquisition data capture unit 10, for obtaining the acquisition data being scanned using bulb；Frequency spectrum and intensity
Distributed acquisition unit 20, for obtaining the rotational spectrum and intensity distribution of bulb anode target according to acquisition data；Variation tendency point
Unit 30 is analysed, for extracting anode target speed from the rotational spectrum of bulb anode target and intensity distribution, according to rotation
Frequency acquisition anode target revolving speed.
When it is implemented, for example, using detector edge module data, after obtaining initial data (raw data), first
The judgement blocked is made whether to left and right edges module；If left and right edges module is blocked, no longer with the life data meter
It calculates and (is equivalent to the noise in the data of removal acquisition), but calculate the data of next agreement；If left and right edges module does not have
It blocks, then carries out following processing.After judging that left and right edges module has been made whether to block completion, to edge module
Data channel direction is gone averagely, to be normalized.Then, Fourier transformation is carried out to data, and then obtains speed
And its relation distribution map of intensity, noise is excluded, the speed of bulb is obtained.
Fig. 2 to Fig. 4 is the testing result of anode target speed before being failed based on method bulb obtained of the invention
Schematic diagram.Fig. 2 is that bulb fails the testing result schematic diagram of anode target speed before the first seven day.Fig. 3 is bulb failure preceding four
The testing result schematic diagram of anode target speed before it.Fig. 4 is the testing result of bulb failure same day anode target speed
Schematic diagram.When can be seen that bulb failure first 7 days from Fig. 2 to Fig. 4, anode target speed is normally 105Hz.Failure
It is reduced to 103.7Hz when first 4 days, has had deviated from desired speed；Spectrum analysis shows the frequency of anode target when failure
Rate has been reduced to 83.5Hz, and noise frequency amplitude is very big.
In short, bulb anode target is in as described above, the service life of bulb bearing and the revolving speed of anode target have direct relationship
High-revolving ratio is higher, and bulb bearing life is shorter.So in actual use, keeping anode target at the low rotational speed as possible
When work, only progress high power scanning, then anode target is switched to high-speed mode, after the completion of scanning, then is reduced to low speed, from
And improve the service life of bulb bearing.But for the bulb using multiple revolving speed schemes, in fact it could happen that carry out big function under the slow-speed of revolution
The abnormal conditions of rate scanning.The detection method provided through the invention can detect anode target revolving speed in advance, and judge currently to sweep
It whether reasonable retouches parameter, prevents the slow-speed of revolution from carrying out the case where high power unwrapping wire causes anode target to damage.Specifically, due to bulb
The revolving speed strong correlation of bearing life and anode target can be predicted so proposing in the present invention by detection anode target revolving speed
Bulb bearing life (out-of-service time), to provide a kind of method for measuring bulb anode target revolving speed.
The present invention provides a kind of methods for detecting bulb anode target revolving speed as a result, can detect anode target in advance and turn
Speed plays in actual scanning and predicts bulb failure while protection to bulb, and judges whether Current Scan parameter closes
Reason prevents the slow-speed of revolution from carrying out the case where high power unwrapping wire causes anode target to damage.Moreover, the present invention carries out frequency spectrum from raw data
And intensive analysis obtains anode target speed conditions, to be not easy the technology detected under the conditions of solving the anode target revolving speed prior art
Problem, and the service life for predicting bulb bearing is furthermore achieved according to anode target revolving speed.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (10)
1. a kind of method for detecting bulb anode target revolving speed, characterized by comprising:
Obtain the acquisition data being scanned using bulb；
The rotational spectrum and intensity distribution of bulb anode target are obtained according to acquisition data；
Anode target speed is extracted from the rotational spectrum of bulb anode target and intensity distribution, and sun is obtained according to speed
Pole target revolving speed.
2. the method for detection bulb anode target revolving speed as described in claim 1, which is characterized in that carried out to acquisition data quick
Fourier transformation is to obtain the rotational spectrum and intensity distribution of bulb anode target.
3. the method for detection bulb anode target revolving speed as claimed in claim 1 or 2, it is characterised in that further include:
Acquisition data are pre-processed after obtaining the acquisition data being scanned using bulb.
4. the method for detection bulb anode target revolving speed as claimed in claim 1 or 2, it is characterised in that further include:
It is predicted according to out-of-service time of the anode target revolving speed to bulb.
5. the method for detection bulb anode target revolving speed as claimed in claim 1 or 2, which is characterized in that accumulated in conjunction with history
Data are acquired to predict the out-of-service time of bulb.
6. the method for detection bulb anode target revolving speed as claimed in claim 3, which is characterized in that according to the rotation of bulb anode target
The fall and/or noise frequency amplitude that turn the frequency of the anode target shown in frequency spectrum and intensity distribution carry out the failure to bulb
Time is predicted.
7. the method for detection bulb anode target revolving speed as claimed in claim 1 or 2, which is characterized in that the scanning is air
Correct scan.
8. the method for detection bulb anode target revolving speed as claimed in claim 1 or 2, which is characterized in that the scanning is positioning
As scanning.
9. the method for detection bulb anode target revolving speed as claimed in claim 3, which is characterized in that the pretreatment is that removal is adopted
The processing such as the noise in the data of collection and/or normalized.
10. a kind of device for detecting bulb anode target revolving speed, characterized by comprising:
Data capture unit is acquired, for obtaining the acquisition data being scanned using bulb；
Frequency spectrum and intensity distribution acquiring unit, for obtaining the rotational spectrum and intensity point of bulb anode target according to acquisition data
Cloth；
Analysis of trend unit, for extracting anode target rotary frequency from the rotational spectrum of bulb anode target and intensity distribution
Rate obtains anode target revolving speed according to speed.
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| CN201611074140.9A CN106526216B (en) | 2016-11-29 | 2016-11-29 | A kind of method and apparatus detecting bulb anode target revolving speed |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107184227A (en) * | 2017-06-30 | 2017-09-22 | 上海联影医疗科技有限公司 | CT bulbs diagnostic method and CT system |
| CN116211337A (en) * | 2018-01-02 | 2023-06-06 | 上海联影医疗科技股份有限公司 | X-ray imaging system monitoring method, fault diagnosis method, device and system |
| US10660601B2 (en) | 2018-01-02 | 2020-05-26 | Shanghai United Imaging Healtcare Co., Ltd. | Systems and methods for monitoring a medical device |
| CN108209951A (en) * | 2018-01-02 | 2018-06-29 | 上海联影医疗科技有限公司 | Monitor the method and device of x-ray imaging equipment operation |
| CN110547819A (en) * | 2019-09-11 | 2019-12-10 | 山东新华医疗器械股份有限公司 | Intelligent control device and method for CT |
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| EP1132943A2 (en) * | 2000-03-08 | 2001-09-12 | Marconi Medical Systems, Inc. | Detection system for x-ray tubes |
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Address after: 201807 Shanghai City, north of the city of Jiading District Road No. 2258 Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 Shanghai City, north of the city of Jiading District Road No. 2258 Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |