CN103389509A - Digitalized collecting and calibrating device and method for X-gamma radiation individual alarm device - Google Patents
Digitalized collecting and calibrating device and method for X-gamma radiation individual alarm device Download PDFInfo
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Abstract
The invention discloses a digitalized collecting and calibrating device and method for an X-gamma radiation individual alarm device. The digitalized collecting and calibrating device comprises a detecting unit and a processing unit, wherein the detecting unit comprises a sensor and a signal conditioner; and the processing unit comprises an A/D (analog to digital) convertor, a data receiving module, a data processing module and a certificate processing module. The digitalized collecting and calibrating device and method for the X-gamma radiation individual alarm device have the benefits that functions of quality control, qualification control of operators and the like are achieved while data collection and data processing are automatically completed; and after stipulated projects of a test task are completed, whether the tested instrument is qualified is automatically obtained, and an electronic edition of certificate and original data recording for an MIS (management information system) are generated; and further, the electronic edition of certificate is transmitted to the MIS through a certificate output module for further processing, so that calibration, correction and detection are more objective.
Description
Technical field
The present invention relates to a kind of proving installation and method, particularly relate to a kind of X-γ radiation individual's alarm digital collection calibrating installation and method.
Background technology
X-γ radiation individual alarm is subject to γ (or X) radiation and produces alarm sound or light, and the density of its warning is proportional to the gamma-emitting intensity of X-(that is: the personal dose equivalent rate that this instrument is subject to
).
In the calibrating of X-γ radiation individual alarm/calibration/testing process, usually use gamma-rays (or X ray) air kerma device to its examined and determine/calibrated/detect.
Use gamma-rays to X-γ radiation individual alarm examined and determine/calibrated/while detecting, usually by radioactive source, produce gamma-rays, as:
60co,
137cs, tested X-γ radiation individual alarm is placed in irradiation field, its equivalent center point overlaps with test point, by using the radioactive source of different activity, change the distance between checked object and radioactive source, perhaps use the different measures such as attenuator to obtain different conventional true values, owing to using, the gamma-rays device is more stable, thereby conventional true value both can obtain conventional true value with the actual measurement of protection level ionization chamber type dosemeter, also measured data can be kept in database, within a certain period of time, utilize the numbering of radioactive source, the distance of test point and radioactive source, the conditions such as the attenuator used, recall the gamma-rays conventional true value from database.With gamma-rays to X-γ radiation individual alarm examined and determine/calibrated/while detecting, usually use method of substitution, that is: (the equivalent center point of standard meter is also referred to as: test point), then place tested survey object and make its equivalent center point overlap (that is: overlapping with test point) with this point to measure the standard value of certain point with protection level ionization chamber type dosemeter.
Use X ray to X-γ radiation individual alarm examined and determine/calibrated/while detecting, usually produce X ray by X-ray production apparatus, tested object is placed in irradiation field, by conditions such as the filament current that changes X-ray production apparatus, the high pressure kilovolt value that changes X-ray production apparatus, filters, obtain different radiation characteristics.Because the degree of stability of the radiant quantity of X-ray production apparatus output is not high enough, thereby, while using x-ray radiation source to be tested, need be monitored the output of x-ray radiation source with protection level ionization chamber type dosemeter, thereby be obtained the conventional true value for test point.
According to customer requirement, the test assignment type is divided into to calibrating, calibration and detects.
Calibrating (verification)---find out and confirm the whether program of coincidence method provisioning request of measurement instrument.Calibrating must be according to measurement verification regulations.Calibrating must provide the judgement that whether qualified measurement instrument is.
Calibration (calibration)---refer under rated condition, for determining measurement instrument indicating value and corresponding measurement standard, reappear one group of operation of relation between value.Calibration is a kind of mode that transmission of quantity value is traced to the source.Calibration only provides and its indicating value off-line data or curve, but does not judge that whether qualified instrument is.
(test)---to given product, material, equipment, biosome, physical phenomenon, technological process or service, program is determined the technical operation of one or more characteristics or performance in accordance with regulations in detection." detection " is only a kind of technical operation, and it only needs the operation of program in accordance with regulations that measured result is provided, and do not need to provide the whether judgement of survey data qualifier.
In the verification process of X-γ radiation individual alarm, need to measure this alarm in parameters such as relative inherent error, alarm threshold value deviation, overload characteristicss, and judge that whether this chimes of doom meets the requirement of " JJG 962-2010 X, γ radiation personal dose equivalent rate alarm " vertification regulation, and provide corresponding certificate (as: calibration certificate or defective L. A.).
In the calibration process of X-γ radiation individual alarm, requirement with reference to " JJG 962-2010 X, γ radiation personal dose equivalent rate alarm " vertification regulation, the parameters such as the calibration factor of this alarm of needs measurement, uncertainty, provide and its indicating value off-line data, provides calibration certificate.
In the testing process of X-γ radiation individual alarm, need to measure the multinomial radiance parameter (as: warning sensitivity, the relative inherent error of reporting to the police, warning job stability, warning loudness, energy response, angular response, overload etc.) of this alarm, according to the requirement (as: " GB 14323 X, γ radiation individual alarm ", " IEC 61,344 1996 Personal warning devices for X and gamma radiations " etc.) of correlation technique file, provide examining report.
Traditional method of testing is: according to the test assignment type, (calibrating, calibration and detection) determines test event, test condition and method to the staff, this just likely identical instrument occurs but test condition and method are inconsistent, equally, also may occur that the different operating personnel are tested same instruments but test condition and method are inconsistent.In test, the staff is counted the flicker number of times by tin chimes of doom and to the chimes of doom counting or by display screen overview alarm light flash in pulpit, then calculate corresponding measurement result, the dissimilar different requirements according to test assignment, provide corresponding certificate (as: calibration certificate or defective L. A., calibration certificate, examining report), this manual record is not only easily omitted, and need to expend a large amount of labours.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of X-γ radiation individual's alarm digital collection calibrating installation and method are provided, test condition and the inconsistent situation of method possibility may appear in the measurand that overcomes same model, and employing manual record, not only easily cause error of omission, also need labor-consuming drawback.
Purpose of the present invention is achieved through the following technical solutions: X-γ radiation individual alarm digital collection calibrating installation, comprise probe unit, processing unit, operating unit and display unit, the output of described probe unit is connected to processing unit, described operating unit goes out to be connected to processing unit, described display unit is connected to processing unit, described processing unit comprises A/D converter, data reception module, data processing module and certificate processing module, the output of A/D converter is connected with data reception module, the output of data reception module is connected with certificate processing module.During test, detected object is placed in radiation chamber, its active center point position overlaps with test point, probe unit is placed near detected object and does not affect the radiation dose that detected object receives, and processing unit, operating unit and display unit are placed on pulpit, pulpit and radiation chamber isolation, avoid the staff to be subject to radiation.
Further, above-mentioned probe unit comprises sensor and signal conditioner, and the output of sensor is connected to processing unit through signal conditioner, and signal conditioner is adjusted to the amplitude output signal of sensor consistent with the input requirements of A/D converter.
Further, when above-mentioned sensor is photoelectric commutator, photoelectric commutator must be adjusted to the amplitude output signal of sensor consistent with the input requirements of A/D converter by signal conditioner, photoelectric commutator is placed near detected object and does not affect the radiation dose that detected object receives, when X-γ radiation individual alarm is reported to the police by flashing, can measure its warning characteristic (both can measure the flashing characteristic, and also can measure normal bright characteristic and the characteristic etc. of often going out) by flashing.
Further, above-mentioned probe unit is the audio collection device, and the audio collection device is consistent with the input requirements of A/D converter; Be placed near detected object and do not affect the radiation dose that detected object receives, when X-γ radiation individual alarm passes through audible alarm, can measure its warning characteristic (both can measure interrupted sounding characteristic, and also can measure and continue sounding characteristic and sounding characteristic etc. not) by chimes of doom.
In described processing unit, A/D converter receives the signal that probe unit sends, and convert signal to digital signal, data reception module is cushioned data, data processing module is for analytical calculation, certificate processing module is for judging the data analysis of data processing module, draw the conclusion whether this tested instrument is qualified and automatically generate for mis system electronic edition certificate (as: calibration certificate, or defective L. A., or calibration certificate, or examining report) and original data record, and the electronic edition certificate is transferred to mis system by the certificate output module further processes.
Further, above-mentioned processing unit also comprises a filtration module, for the signal that will receive probe unit, carries out filtering, and to improve signal to noise ratio (S/N ratio), filtration module is connected between data reception module, data processing module, the signal of elimination unwanted frequency.
Further, above-mentioned processing unit also comprises a database, and described database comprises gamma-rays conventional true value table, censorship unit's information table, by test examination instrument information table, rules information table, measurement data table, certificate data table, personnel's qualification table etc.Wherein, gamma-rays conventional true value table is that the actual measurement of protection level ionization chamber type dosemeter obtains conventional true value and measures the date, within a certain period of time, utilize the distance of numbering, test point and the radioactive source of radioactive source, the conditions such as attenuator of using, the gamma-rays conventional true value can be from database, recalled, the half life period correction can be carried out in case of necessity; It in censorship unit's information table, is censorship unit information (as: censorship organization, address etc.) required on certificate; In the test examination instrument information table, be required by test examination instrument information (as: parameters such as dose equivalent coefficient of being set by test examination instrument title, model, production firm's title, manufacturer) on certificate; The rules information table is rules information required on certificate (as: rules title, test event, to the requirement of technical indicator and regulation etc.); Above-mentioned information, processing unit, when automatically Generating Certificate, can add these information on the assigned address of certificate to.Record qualification and the authority of using the native system personnel in personnel's qualification table; The measurement data table is for storing raw measurement data, and the certificate data table is used for the information that Store Credentials relates to, and measurement data table and certificate data table are used the cipher mode storage; The certificate information of encrypting storage can be used for checking the authenticity of certificate; The original measurement of encrypting storage can be used for further checking the authenticity of certificate and the reliability of certificate data.
Further, be provided with a conventional true value processing module on above-mentioned processing unit, the conventional true value processing module is connected with database with protection level ionization chamber type dosemeter, the conventional true value processing module is obtained X or gamma-rays actual measurement conventional true value from protection level ionization chamber type standard dose instrument, offers that certificate module is quoted or the gamma-rays conventional true value in new database more.
Further, also comprise an operating unit, operating unit is connected on processing unit, and the staff can carry out certain operations to processing unit by operating unit, as read from database, adding or Update Table in database.
Further, also comprise a display unit, described display unit is connected on processing unit, for information such as show certificate contents.
X-γ radiation individual alarm digital collection calibration method comprises the following steps:
(1) staff arranges the Detection task type by operating unit, comprises verification task, calibration tasks or Detection task;
(2) staff also, by operating unit sense data from database, obtains the required information that Generates Certificate, and comprises the censorship unit information, by test examination instrument information, rules information;
(3) detected object is placed in irradiation field, its active center point position overlaps with test point, and probe unit is placed near detected object and do not affected the radiation dose that detected object receives.When probe unit is the audio collection device, probe unit is placed near the hummer of X-γ radiation individual alarm; When sensor is photoelectric commutator, probe unit is placed near the luminous component device of X-γ radiation individual alarm X-γ radiation individual alarm and aims at the luminous component device of X-γ radiation individual alarm;
(4) probe unit output requires the consistent simulating signal of level to send to processing unit with the A/D modular converter, A/D modular converter in processing unit is traffic spike by the analog signal conversion of sensor output, by data reception module, this data stream is received to buffer memory, then after filtration module filtering, sent to data processing module;
(5) data processing module is processed the data that receive, and result of calculation sends to certificate processing module;
(6) certificate processing module sends result of calculation using step (5) and calculates as raw measurement data the parameter that test event is stipulated;
(7) in completing database after the regulation test event, the result that certificate processing module calculates according to step (1), (2) middle information of setting and step (6), automatically generate for the electronic edition certificate of mis system and add above-mentioned information to assigned address on certificate.
Further, above-mentioned step (1) also comprises the step revising or add data afterwards, by operational module, in database, adds data, or the data in the Update Table storehouse.
The invention has the beneficial effects as follows: automatically complete the data acquisition of the calibrating/calibration of X-γ radiation individual alarm/detection, data have the functions such as quality control and the control of operating personnel's qualification when processing, different requirements according to the test assignment type, the rules of setting in this calibrating installation calling data storehouse, test event, test condition and method etc., only in completing database after the regulation test event, this calibrating installation automatically draws the conclusion whether this tested instrument is qualified and generates for mis system electronic edition certificate (as: calibration certificate, or defective L. A., or calibration certificate, or examining report) and original data record, and the electronic edition certificate is transferred to mis system by the certificate output module further to be processed, saved a large amount of labours, also solved the drawback that manual record is easily made mistakes, and can avoid staff's changeable in mood operation, make calibrating/calibration/detection more objective.
The accompanying drawing explanation
The structured flowchart that Fig. 1 is embodiment 1;
Fig. 2 is database schema block diagram in embodiment 1;
The workflow diagram that Fig. 3 is embodiment 1.
The structured flowchart that Fig. 4 is embodiment 2.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but structure of the present invention is not limited only to following examples:
[embodiment 1]
As shown in Figure 1, X-γ radiation individual alarm digital collection calibrating installation, comprise probe unit, processing unit, operating unit and display unit, the output of described probe unit is connected to processing unit, described operating unit goes out to be connected to processing unit, described display unit is connected to processing unit, described processing unit comprises A/D converter, data reception module, data processing module and certificate processing module, the output of A/D converter is connected with data reception module, and the output of data reception module is connected with certificate processing module.During test, detected object is placed in radiation chamber, its active center point position overlaps with test point, probe unit is placed near detected object and does not affect the radiation dose that detected object receives, and processing unit, operating unit and display unit are placed on pulpit, pulpit and radiation chamber isolation, do not affect the radiation dose in radiation chamber.
Further, above-mentioned probe unit is the audio collection device, and the audio collection device is consistent with the input requirements of A/D converter; Be placed near detected object and do not affect the radiation dose that detected object receives, when X-γ radiation individual alarm passes through audible alarm, can measure its warning characteristic (both can measure interrupted sounding characteristic, and also can measure and continue sounding characteristic and sounding characteristic etc. not) by chimes of doom.
In described processing unit, A/D converter receives the signal that probe unit sends, and convert signal to digital signal, data reception module is cushioned data, data processing module is for analytical calculation, certificate processing module is for judging the data analysis of data processing module, draw the conclusion whether this tested instrument is qualified and automatically generate for mis system electronic edition certificate (as: calibration certificate, or defective L. A., or calibration certificate, or examining report) and original data record, and the electronic edition certificate is transferred to mis system by the certificate output module further processes.Data reception module is a fifo buffer, and data processing module is a digital signal processor DSP, and certificate processing module is a CPU.
The processing unit of the present embodiment also comprises a filtration module, for the signal that will receive probe unit, carries out filtering, and to improve signal to noise ratio (S/N ratio), filtration module is connected between data reception module, data processing module, the signal of elimination unwanted frequency.
As Fig. 2, the processing unit of the present embodiment also comprises a database, database is a storer, described database comprises gamma-rays conventional true value table, censorship unit's information table, by the test examination instrument information table, the rules information table, the measurement data table, the certificate data table, personnel's qualification table etc., according to by the test examination instrument model, from database, recalled test parameter and condition (for example: some measured instrument be limited to 10mSv/h, in the test parameter of interior this instrument of database, highest measurement point is 10mSv/h, and certain measured instrument on be limited to 1Sv/h, in the test parameter of interior this instrument of database, highest measurement point is 1Sv/h, etc.), wherein, gamma-rays conventional true value table is that the actual measurement of protection level ionization chamber type dosemeter obtains conventional true value and measures the date, within a certain period of time, utilize the numbering of radioactive source, the distance of test point and radioactive source, the conditions such as the attenuator used, can from database, recall the gamma-rays conventional true value, can carry out the half life period correction in case of necessity, it in censorship unit's information table, is censorship unit information (as: censorship organization, address etc.) required on certificate, in the test examination instrument information table, be required by test examination instrument information (as: parameters such as dose equivalent coefficient of being set by test examination instrument title, model, production firm's title, manufacturer) on certificate, the rules information table is rules information required on certificate (as: rules title, test event, to the requirement of technical indicator and regulation etc.), above-mentioned information, processing unit, when automatically Generating Certificate, can add these information on the assigned address of certificate to.Record qualification and the authority of using the native system personnel in personnel's qualification table.(for example: first has the verification worker qualification, thereby can use this calibrating installation to be examined and determine, and second has detection person's qualification, thereby can use that this calibrating installation is detected etc.); The measurement data table is for storing raw measurement data, and the certificate data table is used for the information that Store Credentials relates to, and measurement data table and certificate data table are used the cipher mode storage; The certificate information of encrypting storage can be used for checking the authenticity of certificate; The original measurement of encrypting storage can be used for further checking the authenticity of certificate and the reliability of certificate data.
Also comprise an operating unit in the present embodiment, operating unit is connected on processing unit, operating unit is a load module, be keyboard, mouse etc., the staff can carry out certain operations to processing unit by operating unit, as read from database, adding or Update Table in database.
Also comprise a display unit in the present embodiment, be display, described display unit is connected on processing unit, for information such as show certificate contents.
This calibrating installation is after the project that completes the test assignment regulation, automatically draw conclusion that whether tested instrument qualified and generate for mis system electronic edition certificate (as: calibration certificate or defective L. A. or calibration certificate or examining report) and original data record, and by the electronic edition certificate by the certificate output module be transferred to mis system further process (as: by the donor that qualification is arranged veritified, ratified, the work such as printing).
As shown in Figure 3, X-γ radiation individual alarm digital collection calibration method, step is as follows:
(1) staff arranges Detection task type (calibrating/calibration/detection) by operating unit, obtain detected instrument test event, test parameter and condition etc. (such as: calibrating needs to measure the parameters such as relative inherent error, alarm threshold value deviation, overload characteristics, calibration needs the parameters such as Measurement and calibration coefficient, uncertainty, detects and needs to measure warning sensitivity, the relative inherent error of reporting to the police, warning job stability, warning loudness, energy response, angular response, overload etc.);
(2) by operating unit sense data from database, obtain the required information that Generates Certificate, comprise the censorship unit information, by test examination instrument information, rules information;
(3) detected object is placed in irradiation field, its active center point position overlaps with test point, and probe unit is placed near detected object and do not affected the radiation dose that detected object receives.When probe unit is the audio collection device, probe unit is placed near the hummer of X-γ radiation individual alarm; When sensor is photoelectric commutator, probe unit is placed near the luminous component device of X-γ radiation individual alarm X-γ radiation individual alarm and aims at the luminous component device of X-γ radiation individual alarm;
(4) probe unit output requires the consistent simulating signal of level to send to processing unit with the A/D modular converter, A/D modular converter in processing unit is traffic spike by the analog signal conversion of sensor output, by data reception module, this data stream is received to buffer memory, then after filtration module filtering, sent to data processing module;
(5) data processing module is processed the data that receive, and result of calculation sends to certificate processing module, and main employing detects the residing time of signal at every turn, thereby calculates interval time while detecting signal twice (adjacent interval);
(6) certificate processing module sends result of calculation using step (5) and calculates the parameter (as: relative inherent error, calibration factor, uncertainty etc.) of test event regulation as raw measurement data, and measurement data is encrypted and stored in database;
(7) only in completing database after the regulation test event, the result that certificate processing module calculates according to step (1), (2) middle information of setting and step (6), automatically generate for the electronic edition certificate of mis system and add above-mentioned information to assigned address on certificate, and store the information encryption related in certificate into certificate data table in database, finally, this device by the certificate output unit to mis system submit to the electronic edition certificate (as: by the donor that qualification is arranged veritified, ratified, the work such as printing).
Above-mentioned step (1) also comprises the step revising or add data afterwards, by operational module, in database, adds data, or the data in the Update Table storehouse.
[embodiment 2]
As shown in Figure 4, the structure of the present embodiment and embodiment 1 are basically identical, difference is that probe unit comprises sensor and signal conditioner, the output of sensor is connected to processing unit through signal conditioner, and signal conditioner is adjusted to the amplitude output signal of sensor consistent with the input requirements of A/D converter.
Further, when above-mentioned sensor is photoelectric commutator, photoelectric commutator must be adjusted to the amplitude output signal of sensor consistent with the input requirements of A/D converter by signal conditioner, photoelectric commutator is placed near detected object and does not affect the radiation dose that detected object receives, when X-γ radiation individual alarm is reported to the police by flashing, can measure its warning characteristic (both can measure the flashing characteristic, and also can measure normal bright characteristic and the characteristic etc. of often going out) by flashing.
Photoelectric commutator is specially photodiode, and signal conditioner is adjusted to the output amplitude of photodiode consistent with the input requirements of A/D converter.
[embodiment 3]
The structure of the present embodiment and embodiment 2 are basically identical, difference is that sensor is that (concrete model is ccd image sensor: 910S6F, resolution 700 lines), ccd image sensor must be adjusted to the amplitude output signal of sensor consistent with the input requirements of A/D converter by signal conditioner (concrete model is: core is the 4140GG of Sony chip), photoelectric commutator is placed near detected object and does not affect the radiation dose that detected object receives, when X-γ radiation individual alarm is reported to the police by flashing, can measure its warning characteristic by flashing and (both can measure the flashing characteristic, also can measure normal bright characteristic and the characteristic etc. of often going out).
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; in the technical scope that any technician who is familiar with this professional skill field discloses in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
Claims (9)
1.X-γ radiation individual alarm digital collection calibrating installation, it is characterized in that, comprise probe unit, processing unit, operating unit and display unit, the output of described probe unit is connected to processing unit, described operating unit goes out to be connected to processing unit, described display unit is connected to processing unit, described processing unit comprises A/D converter, data reception module, data processing module and certificate processing module, the output of A/D converter is connected with data reception module, the output of data reception module is connected with certificate processing module, detected object is placed in irradiation field, its active center point position overlaps with test point, probe unit is placed near detected object and does not affect the radiation dose that detected object receives.
2. collection calibrating installation according to claim 1, is characterized in that, described probe unit comprises sensor and signal conditioner, and the output of sensor is connected to processing unit through signal conditioner.
3. collection calibrating installation according to claim 2, is characterized in that, described sensor is photoelectric commutator.
4. collection calibrating installation according to claim 1, is characterized in that, described probe unit is the audio collection device.
5. collection calibrating installation according to claim 1, is characterized in that, is provided with a filtration module between described data reception module and data processing module, for the signal that will receive probe unit, carries out filtering, to improve signal to noise ratio (S/N ratio).
6. collection calibrating installation according to claim 1, is characterized in that, also is provided with a database in described processing unit, and database is connected on certificate processing module.
7. collection calibrating installation according to claim 1, it is characterized in that, be provided with a conventional true value processing module on described processing unit, the conventional true value processing module is connection data storehouse and certificate processing module respectively, and described conventional true value processing module also connects outside protection level ionization chamber type dosemeter.
8.X-γ radiation individual alarm digital collection calibration method, is characterized in that, comprises the following steps:
(1) staff arranges the Detection task type by operating unit, comprises verification task, calibration tasks or Detection task;
(2) staff also, by operating unit sense data from database, obtains the required information that Generates Certificate, and comprises the censorship unit information, by test examination instrument information, rules information;
(3) detected object is placed in irradiation field, its active center point position overlaps with test point, and probe unit is placed near detected object and do not affected the radiation dose that detected object receives;
When probe unit is the audio collection device, probe unit is placed near the hummer of X-γ radiation individual alarm; When sensor is photoelectric commutator, probe unit is placed near the luminous component device of X-γ radiation individual alarm X-γ radiation individual alarm and aims at the luminous component device of X-γ radiation individual alarm;
(4) probe unit output requires the consistent simulating signal of level to send to processing unit with the A/D modular converter, A/D modular converter in processing unit is traffic spike by the analog signal conversion of sensor output, by data reception module, this data stream is received to buffer memory, then after filtration module filtering, sent to data processing module;
(5) data processing module is processed the data that receive, and result of calculation sends to certificate processing module;
(6) certificate processing module sends result of calculation using step (5) and calculates as raw measurement data the parameter that test event is stipulated;
(7) in completing database after the regulation test event, the result that certificate processing module calculates according to step (1), (2) middle information of setting and step (6), automatically generate for the electronic edition certificate of mis system and add above-mentioned information to assigned address on certificate.
9. X-γ radiation according to claim 8 individual alarm digital collection calibration method, it is characterized in that, described step (1) also comprises the step revising or add data afterwards, by operational module, in database, adds data, or the data in the Update Table storehouse.
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| CN103389509B (en) | 2016-01-20 |
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