CN213372076U - X-ray beam limiter and X-ray detection equipment - Google Patents

Abstract

The utility model provides a beam limiting device for X-ray and X-ray detection equipment. The X-ray beam limiter comprises a shell, a lead leaf and a motor for driving the lead leaf to move, wherein the lead leaf is positioned in the shell, and the motor is electrically connected with the lead leaf; the calibration tool is located outside the shell and comprises a circuit board with a single chip microcomputer and a serial port screen, the circuit board is electrically connected with the motor and the serial port screen, and a display module for displaying the size of the opening of the lead blade and an input module for inputting a control command to control the size of the opening of the lead blade are arranged on the serial port screen. The utility model discloses through the structural design who improves, utilize touch screen control lead leaf opening size, compare in prior art, simplify more on operation flow, be favorable to the personnel's calibration beyond the research and development personnel, be favorable to the leading-in production flow more smoothly of X ray beam limiter product, and have convenient to carry, the operation is humanized, advantages such as expansibility is strong, simultaneously greatly reduced equipment space and use cost.

Description

X-ray beam limiter and X-ray detection equipment

Technical Field

The utility model relates to the field of medical equipment and radiation medical treatment, especially, relate to an X ray beam limiting device and X ray check out test set.

Background

X-ray diagnostic techniques are the earliest non-invasive visceral examination techniques used in the world. Since the X-ray passes through the human body, the different parts absorb different degrees of X-ray, for example, the skeleton absorbs more X-ray than the muscle, so that the X-ray passing through the human body is different in the different parts, the different X-ray quantities carry the density distribution information of each part of the human body, the intensity of the fluorescence or sensitization caused on the fluorescent screen or photographic film is greatly different, and therefore, shadows with different densities are displayed on the fluorescent screen or photographic film (after development and fixation). According to the contrast of shade, and the clinical manifestation, the test result and the pathological diagnosis, whether a certain part of the human body is normal can be judged. With the continuous improvement of medical diagnosis level and the higher attention of people to health, the application of X-ray diagnosis technology is more and more extensive.

An X-ray generating device is a basic component of an X-ray medical apparatus, and generally comprises a bulb and an X-ray beam limiter. The X-ray beam limiter is typically mounted below a bulb tube that emits X-rays that are projected onto the subject through a lead-leaf opening inside the X-ray beam limiter. The X-ray is harmful to human body, and the projection range of the X-ray is controlled to only irradiate the part of the human body to be examined or the focus part, so that the harm of redundant X-rays to the human body is avoided, and the X-ray beam limiter plays a role.

The motion precision calibration of the existing X-ray beam limiter mainly depends on directly writing calibration data into a control chip of the X-ray beam limiter or indirectly writing the calibration data into the control chip of the X-ray beam limiter through a computer upper computer, is too complicated in operation, is not beneficial to people except research and development personnel to calibrate, and causes certain difficulty for leading an X-ray beam limiter product into a production flow.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide a novel X ray beam limiter and X ray check out test set for the motion accuracy calibration of solving the X ray beam limiter among the prior art mainly relies on directly writing in calibration data into X ray beam limiter control chip or through the control chip of the X ray beam limiter of indirect writing in of computer host computer, it is too loaded down with trivial details in the operation, be unfavorable for the people beyond the research and development personnel to calibrate, lead to the leading-in production flow of X ray beam limiter product and lead to the fact certain degree of difficulty scheduling problem.

To achieve the above and other related objects, the present invention provides an X-ray beam limiter, comprising: the lead leaf is positioned in the shell, and the motor is electrically connected with the lead leaf; the calibration tool is located outside the shell and comprises a circuit board with a single chip microcomputer and a serial port screen, the circuit board is electrically connected with the motor and the serial port screen, and a display module for displaying the size of the lead leaf opening and an input module for inputting a control command to control the size of the lead leaf opening are arranged on the serial port screen.

Optionally, the circuit board communicates with the serial port screen through a CAN protocol, and the serial port screen is connected with the circuit board through an RS232 interface.

Optionally, the circuit board is a LPC 1788-based circuit board.

The serial port screen is also provided with a level detection module, and the level detection module comprises a photoelectric switch position touch area and a photoelectric switch status bar display area.

Optionally, the display module includes a calibration bit 1 touch display area and a calibration bit 2 touch display area, and both the calibration bit 1 touch display area and the calibration bit 2 touch display area include a lead leaf predetermined calibration bit touch display unit and a lead leaf calibration status bar touch display unit.

More optionally, the lead leaf predetermined calibration position touch display unit and the lead leaf calibration status bar touch display unit both include a horizontal opening size touch display bar and a vertical opening size touch display bar.

Optionally, a home key touch area is further arranged on the serial port screen.

Optionally, the input module includes a number 0-9 key, a backspace key and a confirm key.

The utility model also provides an X ray check out test set, X ray check out test set include as in above-mentioned arbitrary scheme X ray beam limiting device.

As above, the utility model discloses an X ray beam limiter and X ray check out test set are through the structural design who improves, utilize touch screen control lead leaf opening size, compare in the current mode of relying on directly to write in calibration data into X ray beam limiter control chip or writing in the control chip of X ray beam limiter indirectly through the computer host computer, simplify more on operation flow, be favorable to the personnel's calibration beyond the research and development personnel, be favorable to X ray beam limiter product to lead in production flow more smoothly, and have convenient to carry, the operation is humanized, advantages such as expansibility is strong, simultaneously greatly reduced equipment space and use cost.

Drawings

Fig. 1 shows the working principle of an X-ray beam limiter.

Fig. 2 shows a schematic diagram of a simulated light irradiation field for an X-ray beam limiter.

Fig. 3 is a schematic structural diagram of the X-ray beam limiter of the present invention.

Fig. 4 shows as the utility model provides a structural schematic diagram of calibration position 1 touch-control display area of serial ports screen.

Fig. 5 shows that the utility model provides a serial ports screen's 2 touch-control display areas in calibration position's structural schematic.

Fig. 6 shows that the utility model provides a level detection module's of serial ports screen structure schematic diagram

Description of the element reference numerals

1 casing

11 electric machine

12 lead leaf

13 Circuit board

14 serial port screen

141 calibration level 1 touch display area

141a lead leaf predetermined calibration position touch control display unit

141b lead leaf calibration status bar touch display unit

142 calibration bit 2 touch display area

Touch display unit with lead leaves of 142a preset calibration position

142b lead leaf calibration status bar touch display unit

143 level detection module

144 home key touch area

145 input module

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 3 to 6. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

In the X-ray detection device, X-rays are emitted from a bulb tube and radiated to the periphery, and the X-rays used in the application are only one beam in one direction and are emitted from a tube sleeve window. The X-ray beam limiter is to use lead leaf with adjustable gap to shield the unnecessary original emission line from the window, so as to control the size of the beam and change the irradiation field of the X-ray used in practice. As shown in FIG. 1, A represents the distance from the focal point of the bulb to the lead leaf, B represents the distance from the focal point to the imaging plane, a represents the opening degree of the lead leaf, and B represents the size of the irradiation field. Generally, A is fixed, and B is also fixed for a specific part, so that the size of a can be obtained according to the requirement of B.

Because the X-ray is invisible ray, whether the opening size of the movable lead leaf meets the actual requirement cannot be predicted, a point light source is arranged in the X-ray beam limiter to simulate the position of the focus of an X-ray tube, the light is reflected to the part to be irradiated through a reflector, the irradiation field of the visible ray is used for predicting the irradiation field of the X-ray, and therefore the opening degree of the lead leaf can be adjusted according to the required irradiation field. In order to enable the simulated light irradiation field to accurately reflect the X-ray irradiation field, the positions of an X-ray focus, a point light source and a reflector are important, and the position relationship of the three is as follows: the point source and the X-ray focus must be positioned symmetrically with respect to each other with the mirror as a central axis of symmetry, as shown in fig. 2.

For various reasons, the displacement position of the lead leaves may deviate and the control accuracy of the X-ray beam limiter may not be satisfactory, and calibration is required at this time. The motion precision calibration of the existing X-ray beam limiter mainly depends on directly writing calibration data into a control chip of the X-ray beam limiter or indirectly writing the calibration data into the control chip of the X-ray beam limiter through a computer upper computer, is too complicated in operation, is not beneficial to people except research and development personnel to calibrate, and causes certain difficulty for leading an X-ray beam limiter product into a production flow. The present application proposes an improvement countermeasure therefor.

Specifically, the utility model provides an X ray beam limiting device, X ray beam limiting device includes: the lead blade device comprises a shell 1, a lead blade 12 and a motor 11 for driving the lead blade 12 to move, wherein the lead blade 12 is positioned in the shell 1, and the motor 11 is electrically connected with the lead blade 12 (the motor 11 is usually positioned outside the shell 1); the calibration tool is located outside the shell 1, the calibration tool comprises a circuit board 13 with a single chip microcomputer (not shown) and a serial port screen 14, the circuit board 13 is electrically connected with the motor 11 and the serial port screen 14, and a display module for displaying the opening size of the lead blade 12 and an input module 145 for inputting a control command to control the opening size of the lead blade 12 are arranged on the serial port screen 14. Specifically, a corresponding circuit is arranged on the serial port screen 14, and the circuit is electrically connected with the circuit board 13, so that information interaction between the circuit board 13 and the serial port screen 14 can be realized. The circuit board 13 has a size similar to that of the serial port screen 14, and the circuit board 13 and the serial port screen 14 are attached to each other through a frame or glue sealing process, so as to form a touch screen (of course, the size of the touch screen can be made into the size of a mobile phone, so that the touch screen is convenient to move and carry) which is the same as the touch principle of the smart phone. The main function of the serial port screen 14 is to display the current state and opening size of the lead leaf 12 and input a control command, and the main function of the circuit board 13 with the single chip microcomputer is to receive and analyze the control command of the serial port screen 14, forward and receive and analyze the state and opening size of the lead leaf 12 and display the information in a display area designated by the serial port screen 14, and change the opening size of the lead leaf 12 by controlling the motor 11 to move. The utility model discloses a structural design of X ray beam limiter and X ray detection equipment through the improvement, utilize the 12 opening sizes of touch screen control lead leaf, compare in the current mode of relying on directly to write in calibration data into X ray beam limiter control chip or writing in the control chip of X ray beam limiter indirectly through the computer host computer, can simplify the calibration flow, let the step of calibration reduce as far as possible under the condition of ensureing X ray beam limiter motion precision, and calibration operation is more humanized, adopt the human-computer interaction screen, operation process is similar with smart mobile phone's operation, the personnel's calibration outside the personnel that are favorable to the research and development personnel, be favorable to X ray beam limiter product to leading-in production flow more smoothly, and have convenient to carry, advantages such as expansibility is strong, can also greatly reduced equipment space and use cost.

As an example, the circuit board 13 communicates with the serial port screen 14 through a CAN protocol (mainly, communication between the serial port screen 14 and the single chip microcomputer). As an example, the serial port screen 14 is connected to the circuit board 13 through an RS232 interface, which is beneficial for better compatibility with other hardware devices, i.e. for functional expansion of the X-ray beam limiter.

As an example, the circuit board 13 is a circuit board 13 based on LPC1788, or the single chip microcomputer is an LPC1788 microcontroller, which has the advantages of low power consumption, multiple functional interfaces, and the like, and is beneficial to the function extension of the X-ray beam limiter.

As shown in fig. 4 and fig. 5, as an example, the display module includes a calibration bit 1 touch display area 141 and a calibration bit 2 touch display area 142, and each of the calibration bit 1 touch display area 141 and the calibration bit 2 touch display area 142 includes lead leaf predetermined calibration bit touch display units (141a and 142a) for inputting and displaying predetermined calibration bits (i.e., target calibration bits) of the lead leaves 12, and lead leaf calibration status bar touch display units (141b and 142b) for inputting and displaying positions of the lead leaves 12 that need to be moved. The calibration level 1 touch display area 141 and the calibration level 2 touch display area 142 can be used for displaying and controlling the positions of different lead leaves. It should be noted that the calibration bit 1 touch display area 141 and the calibration bit 2 touch display area 142 may be located on the same display interface or on different display interfaces, and the latter is preferred in this embodiment, that is, the two touch display areas are located on different display interfaces, and the switching between the two touch display areas is realized by switching a touch key (for example, a left-right sliding key, which is not labeled in fig. 4 and fig. 5), so that a single touch display area has a larger display space, and is convenient for the operation and viewing of a worker. And in a further example, the lead leaf predetermined calibration position touch display unit (including 141a and 142a) and the lead leaf calibration status bar touch display unit (including 141b and 142b) each include a horizontal opening size touch display bar and a vertical opening size touch display bar to display the horizontal opening/movement size and the vertical opening/movement size of the lead leaf 12, respectively, and the minimum calibration/movement unit of the lead leaf 12 in the horizontal direction and the vertical direction is 0.1 mm. As an example, the lead calibration status bar touch display unit (including 141b and 142b) further includes a CAN connection status display bar.

The calibration position 1 touch display area 141 and the calibration position 2 touch display area 142 display the opening size of the lead leaf 12, and control the motor 11 to move so that the opening of the lead leaf 12 is opened to a specified window size. Specifically, the process includes: the light field sizes of the two calibration positions are measured (the step can be completed by a master controller of a single chip microcomputer or an X-ray beam limiter), the sizes are written into corresponding calibration position touch display areas, a mapping formula exists between the motor step number of the calibration position and the light field sizes, so that one light field size is obtained, the single chip microcomputer can calculate the step number of the motor 11 needing to move based on the light field size precision, the motor 11 is controlled to operate to move the lead leaves 12 to the specified position, and a light source with the specified size is displayed on the detection panel. When calibration is needed, the opening of the lead leaf 12 can be moved to the specified calibration position 1 by clicking the button "calibration position 1" in fig. 4, and then the writing of the data of the calibration position 1 can be completed by the input module 145 towards the size of the transverse opening and the size of the longitudinal opening, or the opening of the lead leaf 12 can be moved to the specified calibration position 2 by clicking the button "calibration position 2" in fig. 5, and then the writing of the data of the calibration position 2 can be completed by the input module 145 towards the size of the transverse opening and the size of the longitudinal opening.

As an example, the input module 145 includes a number 0-9 key, a backspace key (i.e., a back key), and a confirm key (i.e., an ok key), that is, the input module 145 is a key input, and the aforementioned keys may be arranged in a structure of multiple rows and multiple columns. Of course, in other examples, the input module 145 may also be a handwriting input, but the selection key input is beneficial to improve the control accuracy. The input module 145 may be located below the calibration bit 1 touch display area 141 and the calibration bit 2 touch display area 142.

As an example, a home key touch area 144 is further disposed on the serial port screen 14, and the home key touch area 144 is triggered to enable the X-ray beam limiter to return to an initial state. The home key touch area 144 may be located below the input module 145 and in the middle of the left-right sliding key.

As shown in fig. 6, a level detection module 143 is further disposed on the serial port screen 14, and the level detection module 143 includes a photoelectric switch position touch area and a photoelectric switch status bar display area (preferably, the display area is not on the same display interface as the calibration position 1 touch area and the calibration position 2 touch area, but is switched and displayed by sliding a switch key). The photoelectric switch outputs high and low level signals, the photoelectric switch is shielded or not shielded by touching the photoelectric switch position touch area, so that the photoelectric switch is triggered or not triggered, the singlechip reads the level signals, if the level signals change, the photoelectric switch is good, otherwise, the photoelectric switch is bad. Through setting up level detection module 143 avoids photoelectric switch quality problems itself and the damage that causes in the installation, improves problem screening efficiency. When level detection is required, after the X-ray beam limiter is powered on and runs out of the self-detection process, the input module 145 writes the current light field measurement value into the columns of the transverse opening size and the longitudinal opening size in fig. 6, and then writes the photoelectric switch position into the X-ray beam limiter.

The utility model discloses an X-ray beam limiter is except increasing the calibration tool, other structures all differ little with prior art, for example including the wild lamp of light that is located the casing and structures such as speculum equally, because this part content is known by the technical staff in the field, do not expand in detail to this again.

The utility model provides an X ray check out test set, X ray check out test set includes in above-mentioned arbitrary scheme X ray beam limiter, in addition still including the bulb and the high pressure generator isotructure that are used for launching X ray, the bulb is located the casing periphery and the bulb focus of required X ray beam limiter and is corresponding with the open-ended center of plumbous leaf, and high pressure generator then is connected with the bulb electricity. The utility model discloses an X ray check out test set is owing to adopt in the aforesaid arbitrary scheme X ray beam limiting device, therefore have advantages such as calibration flow is simple, convenient to carry, expansibility are strong.

To sum up, the utility model discloses an X ray beam limiter and X ray check out test set utilize touch screen control lead leaf opening size through the structural design who improves, compare in the current mode of relying on directly to write in calibration data into X ray beam limiter control chip or writing in the control chip of X ray beam limiter indirectly through the computer host computer, can simplify the calibration flow, let the step of calibration reduce as far as possible under the condition of ensureing X ray beam limiter motion precision, and calibration operation is more humanized, adopt the human-computer interaction screen, the operation process is similar with smart mobile phone's operation expansibility, be favorable to the personnel's calibration beyond the research and development personnel, be favorable to X ray beam limiter product to leading-in production flow more smoothly, and have convenient to carry, strong advantage, equipment space and use cost have been greatly reduced simultaneously. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (9)

1. An X-ray beam limiter, characterized in that the X-ray beam limiter comprises:

the lead leaf is positioned in the shell, and the motor is electrically connected with the lead leaf;

the calibration tool is located outside the shell and comprises a circuit board with a single chip microcomputer and a serial port screen, the circuit board is electrically connected with the motor and the serial port screen, and a display module for displaying the size of the lead leaf opening and an input module for inputting a control command to control the size of the lead leaf opening are arranged on the serial port screen.

2. The X-ray beam limiter of claim 1, wherein: the circuit board is communicated with the serial port screen through a CAN protocol, and the serial port screen is connected with the circuit board through an RS232 interface.

3. The X-ray beam limiter of claim 1, wherein: the circuit board is a circuit board based on LPC 1788.

4. The X-ray beam limiter of claim 1, wherein: the serial port screen is also provided with a level detection module, and the level detection module comprises a photoelectric switch position touch area and a photoelectric switch status bar display area.

5. The X-ray beam limiter of claim 1, wherein: the display module comprises a calibration position 1 touch display area and a calibration position 2 touch display area, wherein the calibration position 1 touch display area and the calibration position 2 touch display area both comprise a lead leaf predetermined calibration position touch display unit and a lead leaf calibration status bar touch display unit.

6. The X-ray beam limiter of claim 5, wherein: the lead leaf preset calibration position touch display unit and the lead leaf calibration state bar touch display unit both comprise a transverse opening size touch display bar and a longitudinal opening size touch display bar.

7. The X-ray beam limiter of claim 1, wherein: and a home key touch area is also arranged on the serial port screen.

8. The X-ray beam limiter of claim 1, wherein: the input module comprises a number key of 0-9, a backspace key and a confirm key.

9. An X-ray detection apparatus characterized by: the X-ray detection device comprises the X-ray beam limiter as claimed in any one of claims 1 to 8.

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