TW201620444A - Microwave imaging system and control method thereof - Google Patents

Abstract

This invention discloses a microwave imaging system and control method thereof to solve a problem of the known microwave imaging technology incapable of scanning objects rapid. The microwave imaging system comprises at least one transmitting unit, at least one receiving unit, a plurality of switching units, an analysis unit and a control unit. The transmitting unit is used for transmitting microwave to a to-be-test object. The receiving unit is coupled to the transmitting unit and able to move along a track for receiving microwave transmitted from the to-be-test object. The switching units are connected electrically to the transmitting unit and the receiving unit. The analysis unit is connected electrically to the switching units. The control unit is connected electrically to the transmitting unit, the receiving unit, the switching unit and the analysis unit for control the operating status of them, and to generate a transaction image of the to-be-test object. Thus, it can actually resolve the said problem.

Description

Microwave imaging system and control method thereof

The present invention relates to a microwave imaging system; and more particularly to a microwave imaging system that can be used for medical detection.

Microwaves have been widely used for imaging imaging of dielectric bodies, such as Array Antenna, Medical Imaging, or Ground Penetrating Radar, to ensure structural integrity. Non-destructive testing. It is worth noting that microwave imaging has no radiation concerns, and the equipment cost is lower than X-ray or nuclear magnetic resonance system (MRI), which is very suitable for medical diagnosis and treatment, which can improve the convenience of diagnosis. However, microwave applications in bioimaging and diagnostics are still not as mature as nuclear magnetic resonance systems or radio frequency (RF) devices. Therefore, many research results have been published and can contribute to the field of medical testing, as illustrated below.

A first conventional microwave imaging system includes a container that is equipped with an array of annular monopole antennas, and the container is filled with a coupling liquid for producing a coronal slice of a female breast test, the embodiment of which can be considered as "SPPoplack, TD Tosteson" , WAWells, BWPogue, PM Meaney, A. Hartov, CA Kogel, SK Soho, and JJ Gibson, "Electromagnetic breast imaging: Results of a pilot study in women with abnormal mammograms", Radiology, vol. 243, pp. 350-359, May 2007" Or, "M.Klemm, D. Gibbins, J. Leendertz, T. Horseman, AWPreece, R. Benjamin and IJ Claddock, "Development and testing of a 60-element UWB conformal array for breast cancer imaging", in Proc. ^Th European Conf.Antennas and Propagation (EuCAP), Apr.2011, pp.3077-3079", etc., but the first conventional microwave imaging system for testing, the skin of the subject needs to be immersed in the coupling solution, easy Causes discomfort.

A second conventional microwave imaging system includes a container that is arranged axially in an array of loop antenna arrays for detection scanning, an embodiment of which is described in US Patent Publication No. US 7,454,242 B2 "TISSUE SENSING ADAPTIVE RADAR IMAGING The FOR BREAST TUMOR DETECTION patent case, however, the second conventional microwave imaging system has to sequentially scan a large number of two-dimensional (2D) cut images along the axial (Z-axis), resulting in long scan times and the need to use a large number of antenna arrays.

In addition, the antenna array of the above conventional microwave imaging system is fixed, and the subject cannot move during the measurement process, so as not to affect the measurement result. However, the subject may move slightly due to breathing, mood, or health during the test, resulting in blurred images and reduced imaging sensitivity and resolution. In order to improve this situation, it is necessary to use an appliance to limit the movement of the subject. For example, in breast imaging, the subject needs to use the prone position and limit the measured part to the flat or hemispherical cup to reduce the movement. Therefore, it will cause discomfort to the subject.

In view of this, it is necessary to improve the shortcomings of the prior art described above to meet practical needs and improve its practicability.

The present invention provides a microwave imaging system for quickly scanning microwaves emitted by an object as a basis for forming an image of a cross-section of the object.

The invention further provides a control method for a microwave imaging system for controlling a microwave imaging system to rapidly scan a microwave emitted by an object as a basis for forming an image of a cross-section of the object.

The invention discloses a microwave imaging system, comprising: at least one transmitting unit for transmitting microwaves to a test object, wherein the transmitting unit emits microwaves in a frequency range of 9 to 40 gigabits. Hertz; at least one receiving unit coupled to the transmitting unit, the receiving unit is movable along a track for receiving microwaves emitted by the object to be tested, and the receiving unit receives microwaves in a frequency range of 9 to 40 GHz, The receiving unit has a moving speed of 0.5 to 20 inches per second; a plurality of switching units electrically connected to the transmitting unit and the receiving unit; an analyzing unit electrically connected to the switching unit; and a control unit electrically connected The transmitting unit, the receiving unit, the switching unit and the analyzing unit are configured to control operation of the transmitting unit, the receiving unit, the switching unit and the analyzing unit, and generate a cross-sectional image of the object to be tested.

The control mode of the control unit can be used to open the switching unit when the transmitting unit and the receiving unit are in operation. When the switching unit is turned on, the analyzing unit searches for data during the moving of the receiving unit for analysis.

The control unit may control the switching unit to open part of the time course when the transmitting unit and the receiving unit are in operation, and when the switching unit is turned on, the analyzing unit searches for data during the moving of the receiving unit. analysis.

The control mode of the control unit can be turned on when the transmitting unit and the receiving unit are in operation, and when the switching unit is turned on, the analyzing unit can only capture after the receiving unit moves to a fixed point. The data was analyzed.

The analysis unit can be a vector network analyzer.

The control unit may include a control calculator, a post-processing module, a field mapping calculator, and a database, the control calculator is configured to control the transmitting unit, the receiving unit, the switching unit, and the analyzing unit, and thereafter The processing module generates a known layer image according to the analysis result output by the analyzing unit, and the field mapping calculator converts the known layer image into an unknown layer image as the cross-sectional image, and the database is used to compare the horizontal image. Cut surface image.

The microwave imaging system further includes a display unit electrically connected to the control unit.

The invention further discloses a control method of a microwave imaging system, the microwave imaging system The control unit is electrically connected to the at least one transmitting unit, the at least one receiving unit, the plurality of switching units, and the analyzing unit, the transmitting unit is coupled to the receiving unit, and the receiving unit is movable along a track, and the switching unit is electrically Connected between the analysis unit and the transmitting unit, the receiving unit, the transmitting unit transmits microwaves in a frequency range of 9 to 40 GHz, and the receiving unit receives microwaves in a frequency range of 9 to 40 GHz. The moving speed of the receiving unit is 0.5 to 20 inches per second. The step of the control method comprises: synchronizing and correcting the analyzing unit by the control unit; synchronizing the power source of the receiving unit by the control unit; and controlling by the control unit The switching unit causes the analyzing unit to extract data from the receiving unit, and outputs an analysis result to the control unit; the control unit generates a known layer image according to the analysis result; and outputs the known image by the control unit Layer image to a display unit; the control unit determines whether it is still necessary to receive other signal sources, and if the determination is yes, the control unit controls The receiving unit receives a further signal source, if the determination is NO, the control unit is known in the layer image according to a mapping algorithm is converted into an unknown image layer.

The data capturing mode can be used to open the switching unit when the transmitting unit and the receiving unit are in operation. When the switching unit is turned on, the analyzing unit captures data during the moving of the receiving unit.

The data capture mode can be turned on when the transmitting unit and the receiving unit are in operation, and when the switching unit is turned on, the analyzing unit captures data during the moving of the receiving unit.

The data capture mode can be turned on when the transmitting unit and the receiving unit are in operation, and when the switching unit is turned on, the analyzing unit can only retrieve data after the receiving unit moves to a fixed point. .

The receiving unit can move around in a plane.

The above-mentioned microwave imaging system and its control method only need to use a transmitting unit and a receiving unit, and use the movable receiving unit to quickly scan the imaging, thereby achieving "reducing the time when the subject cannot move" and "improving Scanning image quality and other effects. And the above facts in this case In the scanning imaging process, the subject does not need to be immersed in the coupling solution, and the effect of "increasing the comfort during the test" can be achieved.

〔this invention〕

1‧‧‧ Launching unit

2‧‧‧ Receiving unit

3‧‧‧Switch unit

4‧‧‧Analysis unit

5‧‧‧Control unit

51‧‧‧Control Calculator

52‧‧‧ Post-processing module

53‧‧‧ Fielding Calculator

54‧‧‧Database

6‧‧‧Display unit

T‧‧‧Test object

S1‧‧‧ Analytical calibration procedure

S2‧‧‧Mobile synchronization steps

S3‧‧‧ data acquisition steps

S4‧‧‧Image Processing Steps

S5‧‧‧Image display steps

S6‧‧‧ source judgment step

S7‧‧‧Synchronous transfer steps

S8‧‧‧ Fielding calculation steps

Figure 1 is a system block diagram of an embodiment of a microwave imaging system of the present invention.

Figure 2 is a timing diagram of an embodiment of the microwave imaging system of the present invention.

Fig. 3 is a flow chart showing an embodiment of a control method of the microwave imaging system of the present invention.

Figure 4a is a photograph of a prosthesis to be scanned when scanned by an embodiment of the control method of the microwave imaging system of the present invention.

Figure 4b is an image of the control method of the microwave imaging system of the present invention when scanning the prosthesis to be scanned at a speed of 0.9 inches per second.

Fig. 4c is a view showing an imaging result when the to-be-scanned prosthesis is scanned at a speed of 2.0 inches per second in the embodiment of the control method of the microwave imaging system of the present invention.

Fig. 5a is a diagram showing a known layer when scanning air in an embodiment of the control method of the microwave imaging system of the present invention.

Figure 5b is an image of an unknown layer when scanning air in an embodiment of the control method of the microwave imaging system of the present invention.

Fig. 6 is a schematic view showing the comparison of the tissue information of the embodiment of the microwave imaging system of the present invention when scanning the upper limbs of the human body.

The above and other objects, features and advantages of the present invention will become more <RTIgt; "coupled" means that two electronic components are connected to each other by a coupling means (e.g., electromagnetic or optoelectronic coupling, etc.) for transmitting signals, as will be understood by those of ordinary skill in the art to which the present invention pertains.

Referring to Figure 1, there is shown a system block diagram of an embodiment of a microwave imaging system of the present invention. The embodiment of the microwave imaging system includes at least one transmitting unit 1, at least one receiving unit 2, a plurality of switching units 3, an analyzing unit 4, and a control unit 5. The transmitting unit 1 is coupled to the receiving unit 2, and the switching unit The transmitting unit 1 is electrically connected to the transmitting unit 3, and the analyzing unit 4 is electrically connected to the switching unit 3. The control unit 5 is electrically connected to the transmitting unit 1, the receiving unit 2, the switching unit 3 and the analyzing unit 4. In this embodiment, only one transmitting unit 1, one receiving unit 2, and two switching units 3 are taken as an implementation. If the transmitting unit 1 and the receiving unit 2 are several, they may be arranged in an array, and the switching unit is The number of 3s must also be increased correspondingly so that the switching unit 3 is present between the analysis unit 4 and the transmitting unit 1 and the receiving unit 2.

Referring to FIG. 1 again, the transmitting unit 1 and the receiving unit 2 may be an antenna having a function of transmitting and receiving corresponding electric waves (eg, electromagnetic waves), such as a dipole antenna, a horn antenna, a planar antenna, and a slot. An antenna, a line antenna or a microstrip line antenna, etc., but not limited thereto, the transmitting unit 1 can be used to transmit a microwave to a device T; the receiving unit 2 can be along a track (not shown) The movement speed may be 0.5 to 20 inches/sec (sec.) for receiving the microwave emitted by the object T to be tested. In this embodiment, the transmitting unit 1 and the receiving unit 2 can be located above and below the object T (in the drawing) as an implementation aspect, and the transmitting unit 1 and the receiving unit 2 can transmit and receive 9 Up to 40 gigahertz (GHz) signal; the receiving unit 2 can be moved back and forth in a plane to receive the electric wave emitted by the object to be tested in different directions as a basis for scanning the dielectric parameter of the object to be tested at a horizontal plane The configuration for driving the receiving unit 2 to move may be a conventional conveyor belt structure, or a sliding rail matching motor may be used as a power source or the like, but not limited thereto.

Referring to FIG. 1 again, the switching unit 3 can be an electronic switch having a high-frequency signal switching function, such as a single-pole double-throw switch, etc., and the two switching units 3 are respectively connected to the transmitting unit 1, and receive Between the unit 2 and the analysis unit 4, the analysis unit 4 transmits and receives high frequency signals. In this embodiment, the switching unit 3 is capable of switching 9 to 40 GHz high frequency signals. The switch of the number is used as an implementation, but not limited to this.

Please refer to FIG. 1 again, the analyzing unit 4 can be a device having a signal (such as electromagnetic wave) analysis function, such as a Vector Network Analyzer, for transmitting and receiving the two switching units 3 . The high frequency signal, and produces an analysis result, such as: the plane dielectric coefficient expressed by the S parameter (S-parameter). In this embodiment, the analysis unit 4 is a vector network analyzer capable of transmitting and receiving 9 to 40 GHz, but is not limited thereto.

Referring to FIG. 1 again, the control unit 5 can be a device with data calculation and signal control functions, such as an Industrial Personal Computer, a High Speed Server, and a Micro- Controller Unit), Digital Signal Processor, Field-Programmable Gate Arrays, or Complex Programmable Logic Device can be used as a control logic (control) The carrier of the logic is used to control the operation of the transmitting unit 1, the receiving unit 2, the switching unit 3, and the analyzing unit 4 (for example, by using a PWM signal), and generating a cross-sectional image of the object T to be tested.

In this embodiment, the control unit 5 can include a control algorithm 51, a post process module 52, a field mapping algorithm 53 and a database. The Fitting Database 54 is configured to control the transmitting unit 1, the receiving unit 2, the switching unit 3, and the analyzing unit 4; the post-processing module 52 performs image processing according to the analysis result output by the analyzing unit 4 ( For example, noise filtering, resolution scaling, color conversion, etc., to generate a known layer image; the field mapping calculator 53 is electrically connected to the control calculator 51 and the post-processing module 52 for It is known that the layer image is converted into an unknown layer image, such as: using E(s)=T(s, s') ‧E(s') relation, E(s) is the known layer image, T(s, s') is a mapping function, and E(s') is the unknown layer image.

And so on, the unknown layer image can be regarded as another known layer image, and then transferred Another unknown layer image is obtained, and the known layer image and the unknown layer image can be used as different cross-sectional images of the object T to be used as a basis for stacking into a three-dimensional (3D) spatial image; the database 54 can provide pre-stored data. (eg, tissue of various parts of the human body), used as an image comparison, but not limited to this. In addition, the microwave imaging system embodiment may further include a display unit 6 electrically connected to the control unit 5 for displaying the signal output by the control unit 5 for reference by a user (eg, an inspector, etc.).

Please refer to FIG. 2, which is a timing diagram of an embodiment of the microwave imaging system of the present invention. Please refer to FIG. 1 together, wherein the control unit 5 can control the operation of the transmitting unit 1, the receiving unit 2, the switching unit 3 and the analyzing unit 4 according to different modes, and the transmitting unit/receiving unit operates as shown in the figure. 〞 state (such as: ON or OFF), 〝 switching unit operation 〞 state (such as: ON or OFF), 〝 analysis unit to retrieve data 〞 status (such as: ON or OFF), 〝 receiving unit moving speed 〞 status (such as: The value of acceleration, constant speed or deceleration can be controlled by the control unit 5 by the amplitude, frequency and duty cycle of the PWM signal, for example, the amplitude is about 〝 high, and the low is accurate. The bits can be used to indicate 〝ON〞, 〝OFF〞, and the frequency or duty cycle can be used to indicate 〝Acceleration〞, 〝Idle velocity 〝 or 〝Deceleration 〞, which is understood by those of ordinary skill in the art, only three The mode is an example, but not limited to this.

Please refer to FIG. 2 again, wherein the mode (a) is when the transmitting unit 1 and the receiving unit 2 are operated, the switching unit 3 is fully turned on. When the switching unit 3 is turned on, the analyzing unit 4 can be The receiving unit 2 extracts data for analysis during the movement process. Therefore, the time during which the system cannot be operated when the switching unit 3 is switched can be reduced, and the speed of the data acquisition, analysis, and the like can be further accelerated. The mode (b) is when the transmitting unit 1 and the receiving unit 2 are operated, and the switching unit 3 is turned on in a part of the time course. When the switching unit 3 is turned on, the analyzing unit 4 can be in the process of moving the receiving unit 2 The data is taken for analysis. Therefore, only the data is extracted during the movement process, and the resources for analyzing the redundant data in the non-mobile process can be avoided. The mode (c) is when the transmitting unit 1 and the receiving unit 2 are operated, and the switching unit 3 is in a part of the time history. When the switching unit 3 is turned on, the analyzing unit 4 extracts data for analysis after the receiving unit 2 moves to a fixed point. Therefore, the analyzing unit 4 can extract static data for analysis, the static data. It is usually clearer and has less noise, which improves the quality of data analysis. Therefore, when the embodiment of the microwave imaging system of the present invention is used, the user can select an appropriate mode to operate according to actual needs.

Please refer to FIG. 3, which is a flow chart of an embodiment of a control method of the microwave imaging system of the present invention. The control method includes an analysis and calibration step S1, a mobile synchronization step S2, a data acquisition step S3, an image processing step S4, an image display step S5, a source determination step S6, a synchronization transfer step S7, and A mapping calculation step S8, please refer to Figure 1 together.

In the analysis calibration step S1, the analysis unit 4 is synchronized and corrected by the control unit 1. In this embodiment, the control unit 1 can transmit an analysis synchronization signal and an analysis correction signal to the analysis unit 4 for synchronizing and correcting the analysis unit 4 to avoid error situations such as data out of synchronization or misalignment. Those skilled in the art can understand that it is not described here.

The movement synchronization step S2 is performed by the control unit 1 synchronizing the power source of the receiving unit 2. In this embodiment, the control unit 1 can transmit a mobile synchronization signal to the receiving unit 2 for synchronizing the power source of the receiving unit (such as a motor, etc.) to avoid an incorrect movement position, etc. Those of ordinary skill in the art can understand that it is not described here.

The data acquisition step S3 is controlled by the control unit 1 to cause the analysis unit 4 to retrieve data from the receiving unit 2 and output an analysis result to the control unit 1. In this embodiment, the receiving unit 2 can receive the microwave signal from the object T to be transmitted to the analyzing unit 4, and the analyzing unit 4 converts the analysis result into a plane dielectric coefficient represented by the S parameter. , but not limited to it; the data extraction mode can be used in the When the unit 1 and the receiving unit 2 are in operation, the switching unit 3 is fully turned on. When the switching unit 3 is turned on, the analyzing unit 4 can extract data during the moving of the receiving unit 2 for analysis; or When the transmitting unit 1 and the receiving unit 2 are in operation, the switching unit 3 is turned on in a part of the time course. When the switching unit 3 is turned on, the analyzing unit 4 can extract data during the moving process of the receiving unit 5; or When the transmitting unit 1 and the receiving unit 2 are in operation, the switching unit 3 is turned on in a part of the time course. When the switching unit 3 is turned on, the analyzing unit 4 picks up data after the receiving unit 2 moves to a fixed point. analysis.

In the image processing step S4, the control unit 1 generates a known layer image according to the analysis result. In this embodiment, the control unit 1 can convert the image into the known layer according to the value in the analysis result, and the pixel in the image can be expressed as a different color or grayscale value according to the value, and The image can be filtered by image processing technology to remove noise or enhance edges, but not limited to this.

The image display step S5 is performed by the control unit 1 outputting the known layer image to the display unit 6 for displaying the known layer image. In this embodiment, the control unit 1 can output the known layer image directly to the display unit 6 for reference by relevant personnel.

In the source determining step S6, the control unit 1 determines whether it is still necessary to receive other signal sources. If the determination is YES, the synchronization transfer step S7 is performed. If the determination is No, the field mapping step S8 is performed. . In this embodiment, the control unit 1 can set the number of sources of the signal, and calculate whether the source of the signal is still received by the source of the signal and the source of the obtained signal. If the signal source has been received, the signal source does not need to be received. In addition, each signal source may be received by a single receiving unit 2 at different locations (eg, 0.5λ), or may be received by several receiving units 2 (eg, 0.5λ apart), but not This is limited.

In the synchronization transfer step S7, the control unit 1 controls the receiving unit 2 to receive another signal source. In this embodiment, the number of the receiving unit 2 can be pre-stored in the control unit 1. If the receiving unit 2 has only one, the control unit 1 can control the receiving. The unit 2 moves to the next predetermined position, such as: 0.5λ (half wavelength) position of the antenna for receiving another signal source, the receiving unit 2 can also form an image when moving, and FIG. 4a shows a to-be-scanned prosthesis Photograph, Fig. 4b shows the imaging result when the receiving unit 2 scans the prosthesis to be scanned at a speed of 0.9 inches per second, and Fig. 4c shows the imaging when the receiving unit 2 scans the prosthesis to be scanned at a speed of 2.0 inches per second. As a result, it can be seen that the image quality can be maintained after the moving speed is multiplied; further, if there is more than one receiving unit 2, the control unit 1 can switch to the next receiving unit 2 to receive the next signal source.

The field mapping step S8 is performed by the control unit 1 to convert the known layer image into an unknown layer image according to a field mapping algorithm. In this embodiment, the control unit 1 can use the above E(s)=T(s, s') ‧E(s') relationship to display the known layer image (as shown in FIG. 5a, for scanning The image of the known layer in the air is converted to the image of the unknown layer (as shown in Figure 5b, the image of the unknown layer when scanning the air). In addition, the control unit 1 can also obtain an organization information according to the unknown layer image and a database. As shown in FIG. 6, after comparison, the figure is the upper limb of the human body, and is known. Tissue information such as bone B and muscle M can be displayed on the display unit 6 (as shown in FIG. 1) for the user to read whether the human body is abnormal.

The main features of the microwave imaging system and the method for controlling the same according to the present invention are as follows: the transmitting unit is coupled to the receiving unit, and the switching unit is electrically connected to the analyzing unit, the transmitting unit, and the receiving unit. The control unit is electrically connected to the transmitting unit, the receiving unit, the switching unit and the analyzing unit for controlling its operation. The transmitting unit and the receiving unit can transmit and receive, and the receiving unit can move along a track, and the moving speed can be 0.5 to 20 inches/second for receiving the signal sent by the object to be tested (for example, the frequency is 9). Microwave signal to 40GHz).

Moreover, the control mode (data capture mode) can be turned on when the transmitting unit and the receiving unit are in operation, and when the switching unit is turned on, the analyzing unit can be Obtaining data for analysis during the movement of the receiving unit; or, when the transmitting unit and the receiving unit are in operation, turning the switching unit on a part of the time course, and when the switching unit is turned on, the analyzing unit can receive the data The data is extracted during the unit movement process; or, when the transmitting unit and the receiving unit are in operation, the switching unit is turned on in a part of the time course, and when the switching unit is turned on, the analyzing unit moves to the fixed point in the receiving unit. Only after the data is available for analysis.

Therefore, compared with the conventional microwave imaging system, the above embodiment of the present invention only needs to use one transmitting unit and one receiving unit, and can use the movable receiving unit to quickly scan and image, thereby achieving “reducing that the subject cannot move. Time and "improving the quality of scanning imaging". Moreover, in the above-mentioned embodiment of the present invention, in the scanning imaging process, the subject does not need to be immersed in the coupling solution, and the effect of "increasing the comfort when being tested" can be achieved.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧ Launching unit

2‧‧‧ Receiving unit

3‧‧‧Switch unit

4‧‧‧Analysis unit

5‧‧‧Control unit

51‧‧‧Control Calculator

52‧‧‧ Post-processing module

53‧‧‧ Fielding Calculator

54‧‧‧Database

6‧‧‧Display unit

T‧‧‧Test object

Claims (13)

A microwave imaging system comprising: at least one transmitting unit for transmitting microwaves to a device to be tested, wherein the transmitting unit emits microwaves in a frequency range of 9 to 40 GHz; at least one receiving unit coupled to the transmitting unit, The receiving unit is movable along a track for receiving microwaves emitted by the object to be tested, the receiving unit receives microwaves in a frequency range of 9 to 40 GHz, and the receiving unit moves at a speed of 0.5 to 20 inches per second. a plurality of switching units electrically connected to the transmitting unit and the receiving unit; an analyzing unit electrically connected to the switching unit; and a control unit electrically connected to the transmitting unit, the receiving unit, the switching unit, and the And an analyzing unit, configured to control operation of the transmitting unit, the receiving unit, the switching unit, and the analyzing unit, and generate a cross-sectional image of the object to be tested. According to the microwave imaging system of claim 1, wherein the control unit is controlled when the transmitting unit and the receiving unit are operated, the switching unit is fully turned on, and when the switching unit is turned on, the analyzing unit is Data is retrieved for analysis during the movement of the receiving unit. According to the microwave imaging system of claim 1, wherein the control mode of the control unit is when the transmitting unit and the receiving unit are operated, the switching unit is turned on in a part of the time course, when the switching unit is turned on, The analysis unit extracts data for analysis during the movement of the receiving unit. According to the microwave imaging system of claim 1, wherein the control mode of the control unit is when the transmitting unit and the receiving unit are operated, the switching unit is turned on in a part of the time course, when the switching unit is turned on, The analyzing unit only extracts data for analysis after the receiving unit moves to a fixed point. The microwave imaging system of claim 1, 2, 3 or 4, wherein the receiving unit is moved in a plane. The microwave imaging system of claim 1, 2, 3 or 4, wherein the analysis unit is a vector network analyzer. The microwave imaging system according to claim 1, 2, 3 or 4, wherein the control unit comprises a control calculator, a post-processing module, a field calculation calculator and a database, wherein the control calculator is used for Controlling the transmitting unit, the receiving unit, the switching unit and the analyzing unit, the post processing module generates a known layer image according to the analysis result output by the analyzing unit, and the field mapping calculator converts the known layer image into An unknown layer image is used as the cross-sectional image, and the database is used to compare the cross-sectional image. The microwave imaging system of claim 1, 2, 3 or 4, further comprising a display unit electrically connected to the control unit. A method for controlling a microwave imaging system, the microwave imaging system is electrically connected to at least one transmitting unit, at least one receiving unit, a plurality of switching units, and an analyzing unit, wherein the transmitting unit is coupled to the receiving unit, the receiving unit The receiving unit is electrically connected to the analyzing unit and the transmitting unit and the receiving unit. The frequency of the microwave emitted by the transmitting unit ranges from 9 to 40 GHz, and the receiving unit receives the microwave. The frequency range is 9 to 40 GHz, and the moving speed of the receiving unit is 0.5 to 20 inches per second. The method of the control method comprises: synchronizing and correcting the analyzing unit by the control unit; synchronizing the control unit by the control unit a power source of the receiving unit; the switching unit is controlled by the control unit to cause the analyzing unit to retrieve data from the receiving unit, and output an analysis result to the control unit; and the control unit generates a known according to the analysis result Layer image; the control unit outputs the known layer image to a display unit; The control unit determines whether it is still necessary to receive other signal sources. If the determination is yes, the control unit controls the receiving unit to receive another signal source. If the determination is no, the control unit uses the known layer image according to a field mapping algorithm. Convert to an unknown layer image. According to the control method of the microwave imaging system of claim 9, wherein the data acquisition mode is when the transmitting unit and the receiving unit operate, the switching unit is fully turned on, and when the switching unit is turned on, The analysis unit retrieves data during the movement of the receiving unit. According to the control method of the microwave imaging system of claim 9, wherein the data acquisition mode is when the transmitting unit and the receiving unit operate, the switching unit is turned on in a part of the time course, when the switching unit is turned on. The analyzing unit captures data during the movement of the receiving unit. According to the control method of the microwave imaging system of claim 9, wherein the data acquisition mode is when the transmitting unit and the receiving unit operate, the switching unit is turned on in a part of the time course, when the switching unit is turned on. When the receiving unit moves to a fixed point, the analyzing unit captures the data. The control method of the microwave imaging system according to claim 9, wherein the receiving unit is moved in a plane.