CN117433400B - Offset measurement method and device for mobile DR, electronic product and medium - Google Patents
Offset measurement method and device for mobile DR, electronic product and medium Download PDFInfo
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- CN117433400B CN117433400B CN202311679979.5A CN202311679979A CN117433400B CN 117433400 B CN117433400 B CN 117433400B CN 202311679979 A CN202311679979 A CN 202311679979A CN 117433400 B CN117433400 B CN 117433400B
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 62
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- 238000005259 measurement Methods 0.000 abstract description 5
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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Abstract
The invention provides a mobile DR offset measurement method, a mobile DR offset measurement device, an electronic product and a medium. The method comprises the following steps: releasing the magnetic field signal; respectively acquiring induction current signals generated by induction magnetic field signals on each gate line and each data line; analyzing distribution characteristic variation of the induced current signals on each grid line and each data line; and determining the displacement of the detector according to the distribution characteristic variation. The offset measuring method, the offset measuring device, the electronic product and the medium for the mobile DR can accurately give the displacement of the detector.
Description
Technical Field
The invention belongs to the field of medical equipment, and particularly relates to a method and a device for measuring offset of a mobile DR, an electronic product and a medium.
Background
The driving modes of the existing traveling system of the mobile X-ray machine are roughly divided into two modes: with the continuous development of medical X-ray technology, the medical X-ray machine has the advantages of increasingly digitizing, comprehensive and humanized functions, and the comprehensive functions inevitably increase the quality of the whole machine.
In the field of mobile DR, the detector is often moved in order to acquire more accurate X-ray images. However, the X-ray image taken is more satisfactory only if the detector is precisely aligned with the X-ray source. Therefore, knowing the displacement of the detector in real time is very important in practical applications.
Disclosure of Invention
The invention aims to provide a mobile DR offset measurement method, a mobile DR offset measurement device, an electronic product and a mobile DR offset measurement medium, so as to solve the problems in the background art.
To achieve the above object, in a first aspect, the present invention provides a method for measuring offset of a mobile DR, including:
Releasing the magnetic field signal;
Respectively acquiring induction current signals generated by induction magnetic field signals on each gate line and each data line;
analyzing distribution characteristic variation of the induced current signals on each grid line and each data line;
And determining the displacement of the detector according to the distribution characteristic variation.
In some embodiments, analyzing the distribution characteristic variation of the induced current signal over each gate line and each data line includes:
And recording the serial number of the grid line corresponding to the maximum amplitude of the induction current signal.
In some embodiments, determining the displacement of the detector from the distribution feature variation comprises:
searching the serial number of the grid line corresponding to the maximum amplitude of the induced current signal at the previous moment;
Calculating the difference between the grid line number corresponding to the maximum amplitude at the previous moment and the grid line number corresponding to the current maximum amplitude;
And determining the displacement of the detector in the vertical direction according to the difference value.
In some embodiments, determining the displacement of the detector from the distribution feature variation comprises:
searching the current induction current signal amplitude of the grid line corresponding to the maximum amplitude at the previous moment;
Searching the serial numbers of the grid lines with the same sensing current signal amplitude;
calculating the difference between the serial number and the serial number of the grid line corresponding to the current maximum amplitude;
And determining the displacement of the detector in the vertical direction according to the difference value.
In some embodiments, analyzing the distribution characteristic variation of the induced current signal over each gate line and each data line includes:
And recording the serial number of the data line corresponding to the maximum amplitude of the induction current signal.
In some embodiments, determining the displacement of the detector from the distribution feature variation comprises:
searching the serial number of the data line corresponding to the maximum amplitude of the induced current signal at the previous moment;
Calculating the difference between the data line number corresponding to the maximum amplitude at the previous moment and the data line number corresponding to the current maximum amplitude;
And determining the displacement of the detector in the horizontal direction according to the difference value.
In some embodiments, determining the displacement of the detector from the distribution feature variation comprises:
searching the current induction current signal amplitude of the data line corresponding to the maximum amplitude at the last moment;
searching the number of the data line with the same sensing current signal amplitude;
calculating the difference between the number and the number of the data line corresponding to the current maximum amplitude;
And determining the displacement of the detector in the horizontal direction according to the difference value.
In a second aspect, the present invention provides an offset measurement apparatus for mobile DR, comprising:
The release module is used for releasing the magnetic field signal;
The current acquisition module is used for respectively acquiring induction current signals generated by induction magnetic field signals on each grid line and each data line;
The analysis module is used for analyzing the distribution characteristic variation of the induced current signals on each grid line and each data line;
and the displacement determining module is used for determining the displacement of the detector according to the distribution characteristic variation.
In a third aspect, the present invention provides an electronic product, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the offset measurement method of the mobile DR.
In a fourth aspect, the present invention provides a computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the offset measurement method of mobile DR.
According to the invention, the induced current is generated by the grid line and the data line in the TFT array through releasing the magnetic field signal, the distribution characteristic variation is obtained according to the analysis of the distribution characteristics of the amplitude and the frequency of the induced current, and finally the displacement of the detector is determined according to the distribution characteristic variation.
Drawings
Fig. 1 is a flowchart of a method for measuring offset of a mobile DR according to an embodiment of the present invention;
FIG. 2 is a flow chart of a displacement determination process provided by an embodiment of the present invention;
FIG. 3 is a flow chart of a displacement determination process provided by an embodiment of the present invention;
FIG. 4 is a block diagram of an offset measurement apparatus for mobile DR according to an embodiment of the present invention;
Fig. 5 is a block diagram of an electronic product according to an embodiment of the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
As shown in fig. 1, the offset measurement method of the mobile DR according to an embodiment of the invention includes:
S11, releasing the magnetic field signal.
S12, respectively acquiring induction current signals generated by induction magnetic field signals on each gate line and each data line.
S13, analyzing distribution characteristic variation of the induced current signals on each gate line and each data line.
S14, determining the displacement of the detector according to the distribution characteristic variation.
It should be appreciated that the mobile DR apparatus should include at least one X-ray source, and one detector. The detector is equipped with a TFT array.
The TFT array includes: a gate line extending in a horizontal direction, and a data line extending in a vertical direction.
In addition to the X-ray source and detector, the mobile DR device provided by the present invention is equipped with a magnetic field source. The magnetic field source is capable of generating a magnetic field in the vicinity of the detector. After the magnetic field is generated, the grid lines and the data lines in the TFT array cut magnetic force lines, so that induced current signals are generated.
It will be appreciated that the magnitude of the induced current obtained at different gate and data lines is different due to the different relative positions between the gate and data lines and the magnetic field source. The magnitude of the resulting induced current signal on the gate or data line, which is located in the orientation where the magnetic field strength is stronger, should be relatively large. On the contrary, the magnitude of the induced current signal obtained on the gate line or the data line at the position where the magnetic field strength is weak is relatively small.
In addition, signals transmitted on the gate lines and the data lines, and sensed by the gate lines or the data lines, have different frequencies. The induced current signal resulting from the induced magnetic field signal should have the same frequency as the magnetic field signal. And the signals transmitted on the gate and data lines should have a different frequency than the induced current signals.
It should be appreciated that by obtaining the distribution characteristic variation of the induced current signal in amplitude and frequency, the displacement of the detector can be obtained. Typically, the displacement of the detector may be determined with reference to the amount of spatial variation of the amplitude maximum.
In addition, when the frequency characteristics of different signals are considered, only the current signal of the same frequency as the magnetic field signal should be acquired while the current signals of other frequencies are filtered out when the induced current signal is acquired.
After the displacement of the detector is determined, a reference value in terms of displacement is provided for next control of the X-ray source movement, so that accurate next control is facilitated.
It should be noted that, the determination of the displacement may further refer to angle information of the detector. The source of the angle information may be a gyroscope with which the detector is equipped.
As shown in fig. 2, the displacement determining process according to an embodiment of the present invention, that is, determining the displacement of the detector according to the distribution characteristic variation, includes:
s21, searching the serial number of the grid line corresponding to the maximum amplitude of the induced current signal at the previous moment.
S22, calculating the difference between the grid line number corresponding to the maximum amplitude at the last moment and the grid line number corresponding to the current maximum amplitude.
S23, determining the displacement of the detector in the vertical direction according to the difference value.
The displacement of the detector can be determined by the execution of the above procedure, the basic premise being that adjacent grid lines are equidistant. And, the spacing between adjacent gate lines is known. Thus, the displacement of the detector is obtained by calculating the difference between the two grid line numbers and multiplying the distance between adjacent grid lines as long as the grid line number with the largest amplitude at the previous moment and the grid line number with the largest amplitude at the next moment are known.
It should be noted that the above-described process may be performed with reference to calculating the displacement in the horizontal direction, except that the induced current signal collected at this time is the induced current signal collected by the data line.
As shown in fig. 3, the unique determining process of the present invention in one embodiment, that is, determining the displacement of the detector according to the distribution characteristic variation, includes:
s31, searching the current induction current signal amplitude of the grid line corresponding to the maximum amplitude at the previous moment.
S32, searching the serial numbers of the grid lines with the same sensing current signal amplitude.
S33, calculating the difference between the number and the number of the grid line corresponding to the current maximum amplitude.
S34, determining the displacement of the detector in the vertical direction according to the difference value.
The difference from the process shown in fig. 2 is that the medium to be compared with the process shown in fig. 3 is the gate line that takes the greatest amplitude at the previous time, its current sense current signal amplitude.
It should be understood that the above-described method may also be referred to for execution in calculating the displacement amount in the horizontal direction.
As shown in fig. 4, the offset measuring apparatus for moving DR according to an embodiment of the present invention includes: the device comprises a releasing module, a current acquisition module, an analysis module and a displacement determination module.
The release module is used for releasing the magnetic field signal.
The current acquisition module is used for respectively acquiring induction current signals generated by induction magnetic field signals on each grid line and each data line.
The analysis module is used for analyzing distribution characteristic variation of the induced current signals on each grid line and each data line.
The displacement determining module is used for determining the displacement of the detector according to the distribution characteristic variation.
In some embodiments, the analysis module is specifically configured to:
And recording the serial number of the grid line corresponding to the maximum amplitude of the induction current signal.
In some embodiments, the displacement determination module comprises: the device comprises a first number searching unit, a first difference calculating unit and a first displacement determining unit.
The first number searching unit is used for searching the number of the grid line corresponding to the maximum amplitude of the induced current signal at the previous moment.
The first difference calculating unit is used for calculating a difference between the grid line number corresponding to the maximum amplitude at the last moment and the grid line number corresponding to the current maximum amplitude.
The first displacement determining unit is used for determining the displacement of the detector in the vertical direction according to the difference value.
In some embodiments, the displacement determination module comprises: the device comprises a first amplitude searching unit, a second number searching unit, a second difference calculating unit and a second displacement determining unit.
The first amplitude searching unit is used for searching the current induction current signal amplitude of the grid line corresponding to the maximum amplitude at the previous moment.
The second number searching unit is used for searching the number of the grid line which currently takes the same sensing current signal amplitude.
The second difference calculating unit is used for calculating the difference between the serial number and the serial number of the grid line corresponding to the current maximum amplitude.
The second displacement determining unit is used for determining the displacement of the detector in the vertical direction according to the difference value.
In some embodiments, the analysis module is specifically configured to:
And recording the serial number of the data line corresponding to the maximum amplitude of the induction current signal.
In some embodiments, the displacement determination module comprises: a third number searching unit, a third difference calculating unit, and a third displacement determining unit.
The third number searching unit is used for searching the number of the data line corresponding to the maximum amplitude of the induced current signal at the previous moment.
The third difference calculating unit is used for calculating the difference between the data line number corresponding to the maximum amplitude at the last moment and the data line number corresponding to the current maximum amplitude.
The third displacement determining unit is used for determining the displacement of the detector in the horizontal direction according to the difference value.
In some embodiments, the displacement determination module comprises:
The second amplitude searching unit is used for searching the current induction current signal amplitude of the data line corresponding to the maximum amplitude at the previous moment.
The fourth number searching unit is used for searching the number of the data line which currently takes the same sensing current signal amplitude.
The fourth difference calculating unit is used for calculating the difference between the number and the number of the data line corresponding to the current maximum amplitude.
The fourth displacement determining unit is used for determining the displacement of the detector in the horizontal direction according to the difference value.
In one embodiment, the invention provides an electronic product, as shown in fig. 5, the electronic device includes at least one processor, and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the offset measurement method of mobile DR.
Where the memory and the processor are connected by a bus, the bus may comprise any number of interconnected buses and bridges, the buses connecting the various circuits of the one or more processors and the memory together. The bus may also interface various other circuits together, such as peripherals, voltage regulators, and power management circuits, which are well known in the art. The interface provides an interface, e.g., a communication interface, a user interface, between the bus and the transceiver. The transceiver may be one element or may be a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor is transmitted over the wireless medium via the antenna, which further receives the data and transmits the data to the processor.
The processor is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory may be used to store data used by the processor in performing operations.
In one embodiment, the present invention provides a computer readable storage medium storing a computer program, which when executed by a processor, implements the above-described method embodiments.
It will be appreciated by those skilled in the art from the foregoing description that implementing all or part of the steps of the methods of the embodiments described above may be accomplished by a program stored in a storage medium, comprising instructions for causing a device (which may be a single-chip microcomputer, chip or the like) or processor (processor) to perform all or part of the steps of the methods of the embodiments of the application. The storage medium includes, but is not limited to, a usb disk, a removable hard disk, a magnetic memory, an optical memory, and other various media capable of storing program codes.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, or method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules/units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple modules or units may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules or units, which may be in electrical, mechanical or other forms.
The modules/units illustrated as separate components may or may not be physically separate, and components shown as modules/units may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules/units may be selected according to actual needs to achieve the objectives of the embodiments of the present application. For example, functional modules/units in various embodiments of the application may be integrated into one processing module, or each module/unit may exist alone physically, or two or more modules/units may be integrated into one module/unit.
Those of ordinary skill would further appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, in computer software, or in a combination of the two, and that the elements and steps of the examples have been generally described in terms of function in the foregoing description to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The descriptions of the processes or structures corresponding to the drawings have emphasis, and the descriptions of other processes or structures may be referred to for the parts of a certain process or structure that are not described in detail.
The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (4)
1. An offset measurement method of a mobile DR, comprising:
Releasing the magnetic field signal;
Respectively acquiring induction current signals generated by induction magnetic field signals on each gate line and each data line;
analyzing distribution characteristic variation of the induced current signals on each grid line and each data line;
determining the displacement of the detector according to the distribution characteristic variation;
wherein, the distribution characteristic variation of the induced current signal on each gate line and each data line is analyzed, including: recording the serial number of the grid line corresponding to the maximum amplitude of the induction current signal; recording the serial number of the data line corresponding to the maximum amplitude of the induction current signal;
Determining the displacement of the detector according to the distribution characteristic variation, including:
searching the serial number of the grid line corresponding to the maximum amplitude of the induced current signal at the previous moment; calculating the difference between the grid line number corresponding to the maximum amplitude at the previous moment and the grid line number corresponding to the current maximum amplitude; determining the displacement of the detector in the vertical direction according to the difference value;
Searching the serial number of the data line corresponding to the maximum amplitude of the induced current signal at the previous moment; calculating the difference between the data line number corresponding to the maximum amplitude at the previous moment and the data line number corresponding to the current maximum amplitude; determining the displacement of the detector in the horizontal direction according to the difference value;
or determining the displacement of the detector according to the distribution characteristic variation, including:
Searching the current induction current signal amplitude of the grid line corresponding to the maximum amplitude at the previous moment; searching the serial numbers of the grid lines with the same sensing current signal amplitude; calculating the difference between the serial number and the serial number of the grid line corresponding to the current maximum amplitude; determining the displacement of the detector in the vertical direction according to the difference value;
searching the current induction current signal amplitude of the data line corresponding to the maximum amplitude at the last moment; searching the number of the data line with the same sensing current signal amplitude; calculating the difference between the number and the number of the data line corresponding to the current maximum amplitude; and determining the displacement of the detector in the horizontal direction according to the difference value.
2. A wireless location apparatus for mobile DR, comprising:
The release module is used for releasing the magnetic field signal;
The current acquisition module is used for respectively acquiring induction current signals generated by induction magnetic field signals on each grid line and each data line;
The analysis module is used for analyzing the distribution characteristic variation of the induced current signals on each grid line and each data line;
The displacement determining module is used for determining the displacement of the detector according to the distribution characteristic variation;
wherein, the distribution characteristic variation of the induced current signal on each gate line and each data line is analyzed, including: recording the serial number of the grid line corresponding to the maximum amplitude of the induction current signal; recording the serial number of the data line corresponding to the maximum amplitude of the induction current signal;
Determining the displacement of the detector according to the distribution characteristic variation, including:
searching the serial number of the grid line corresponding to the maximum amplitude of the induced current signal at the previous moment; calculating the difference between the grid line number corresponding to the maximum amplitude at the previous moment and the grid line number corresponding to the current maximum amplitude; determining the displacement of the detector in the vertical direction according to the difference value;
Searching the serial number of the data line corresponding to the maximum amplitude of the induced current signal at the previous moment; calculating the difference between the data line number corresponding to the maximum amplitude at the previous moment and the data line number corresponding to the current maximum amplitude; and determining the displacement of the detector in the horizontal direction according to the difference value.
3. An electronic product, comprising:
at least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores instructions executable by the at least one processor to enable the at least one processor to perform the offset measurement method of mobile DR as recited in claim 1.
4. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the offset measurement method of mobile DR of claim 1.
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