CN212788527U

CN212788527U - X-ray shielding device based on height sensor and X-ray inspection device

Info

Publication number: CN212788527U
Application number: CN202020347258.XU
Authority: CN
Inventors: 方明
Original assignee: HANGZHOU MEDNOVA MEDICAL TECHNOLOGIES CO LTD
Current assignee: HANGZHOU MEDNOVA MEDICAL TECHNOLOGIES CO LTD
Priority date: 2019-12-31
Filing date: 2020-03-18
Publication date: 2021-03-26
Anticipated expiration: 2030-03-18

Abstract

The application discloses light shielding device of X-ray and X-ray inspection device based on height sensor, light shielding device includes: the X-ray shielding device comprises a shielding plate supporting structure, shielding plates, power equipment, a motion controller and a height sensor, wherein the shielding plates are used for shielding X-rays, and variable light-transmitting openings with variable sizes and positions are formed between the shielding plates; the height sensor is arranged above a rack of the X-ray inspection device and is used for detecting the height of the rack of the X-ray inspection device; the motion controller is electrically connected with the power equipment and the height sensor, acquires height data of the height sensor in real time, and determines the opening position of the variable light-transmitting opening by adjusting the height of the shielding plate, so that the position and the size of the variable light-transmitting opening are consistent with those of an X-ray irradiation area. The automatic alignment of the variable light-transmitting opening of the X-ray shielding device and the illumination area of the X-ray can be realized without adding extra steps, thereby greatly reducing the workload of equipment operators.

Description

X-ray shielding device based on height sensor and X-ray inspection device

Technical Field

The utility model relates to a medical science radiation protection field especially relates to a light shielding device of X-ray and X-ray inspection device based on altitude sensor.

Background

An X-ray machine is the most common medical imaging equipment in various hospitals. The X-ray machine has the greatest advantages that the X-ray machine is wide in application range, can image all human tissues of human beings, such as bones, the skull, the chest, the lung, joints and the like, is very convenient to use, short in imaging time, low in requirements on equipment operators, and low in purchase and maintenance cost. In contrast, the ultrasound device cannot be used for examination of bones, the skull, the chest and the lung, and the like; although nuclear magnetic resonance can also be used for examining most human tissues, the nuclear magnetic resonance examination apparatus is large in size, high in cost, long in examination time and low in spatial resolution. However, the X-ray machine has its obvious disadvantage that X-rays are ionizing radiation, and the radiation dose of the X-rays can cause harm to the health of human bodies.

At present, the common practice at home and abroad is to use an old-fashioned film X-ray machine or a new-fashioned digital X-ray machine to image the part of a detected person to be detected in a shielding room, and the shielding room has the function of preventing the scattered X-ray from having adverse effects on other people. And if the chest radiography needs to be carried out, the operator of the X-ray machine uses a beam light device on the X-ray machine to limit the X-ray to only irradiate the chest of the examinee. Although only the chest of the subject will be directly irradiated with the X-ray, the X-ray will be imaged with a large amount of scattered X-ray, and when the X-ray protection is not performed in place, the scattered X-ray will be scattered to the eyes, skull, lymph, gonad, etc. of the subject, which are sensitive to the X-ray, thereby adversely affecting the health of the subject. Unfortunately, most hospitals do not provide effective X-ray protection for the body parts of the subject that do not need to be examined when performing X-ray examination on the subject.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to above-mentioned problem, provide a light shielding device of X ray and X-ray inspection device based on altitude sensor, can carry out more effective X-ray protection to the position that the person of being examined need not be the inspection, and can not increase operator's work load to ensure that the X-ray that does not have the scattering shines the position that those need not be the health of inspection.

The embodiment of the utility model provides a technical scheme as follows:

a height sensor based X-ray shield apparatus comprising: a shield plate support structure, a movable shield plate, a power device for driving the shield plate, a motion controller, and a height sensor,

the X-ray shielding device comprises shielding plates, a power device and a power device, wherein the shielding plates are movably arranged on a shielding plate supporting structure and are driven to move by the power device, the shielding plates are used for shielding X-rays, variable light-transmitting openings with variable sizes and positions are formed among the shielding plates, and the variable light-transmitting openings are X-ray passing channels; the height sensor is arranged above a rack of the X-ray inspection device and is used for detecting the height of the rack of the X-ray inspection device; the motion controller is electrically connected with the power equipment and the height sensor, acquires height data of the height sensor in real time, and determines the opening position of the variable light-transmitting opening by adjusting the height of the shielding plate, so that the position and the size of the variable light-transmitting opening are consistent with those of an X-ray irradiation area.

Optionally, the X-ray inspection device further comprises a height detection connecting rod, one end of the height detection connecting rod is movably connected to the shielding plate supporting structure, the other end of the height detection connecting rod is provided with a height sensor, and the height sensor can move above the rack of the X-ray inspection device through selection/extension of the height detection connecting rod.

Optionally, the X-ray inspection device further comprises a shapeable universal pipe, one end of the shapeable universal pipe is connected to the shielding plate supporting structure, the other end of the shapeable universal pipe is provided with a height sensor, and the shapeable universal pipe is bent to enable the height sensor to move above the rack of the X-ray inspection device.

Optionally, at least 2 height sensors are respectively located at two sides of the X-ray shielding device.

Optionally, the machine frame includes one or more of a cross arm, a sickle arm, a Z arm, a bulb tube, a beam splitter, and a detector of the X-ray examination apparatus.

Optionally, the height sensor is a laser distance sensor, an infrared distance sensor or an ultrasonic distance sensor.

Optionally, the shielding plate includes an upper shielding plate and a lower shielding plate, and the height adjustment of the upper shielding plate and the height adjustment of the lower shielding plate realize the adjustment of the variable light-transmitting opening.

Optionally, the shielding plate further comprises a left shielding plate and a right shielding plate, and the width adjustment and the center position adjustment of the variable light-transmitting opening are realized through the horizontal position adjustment of the left shielding plate and the right shielding plate.

The embodiment of the utility model provides a still provide an X-ray inspection device based on height sensor, include: the X-ray shielding device, the X-ray emitting device and the X-ray detecting device are arranged in sequence, wherein the X-ray shielding device is arranged between the X-ray emitting device and the X-ray detecting device, and the area between the X-ray shielding device and the X-ray detecting device is used for accommodating a subject.

The utility model has the advantages that:

because the variable light-transmitting opening with variable size can be formed through the shielding plate, when X-ray examination is needed to be carried out on a certain part of a human body, only the part needs to be positioned at the variable light-transmitting opening, the X-ray penetrates through the variable light-transmitting opening to irradiate the part needing to be examined, and due to the shielding effect of the shielding plate, the part needing no examination can be well shielded, the X-ray dose of the X-ray received by the examined person is greatly reduced, and malignant tumors, particularly the incidence rate of malignant tumors of glands are reduced. Meanwhile, the height sensor is installed above the rack of the X-ray inspection device, the height of the rack of the X-ray inspection device is detected by the height sensor, the rack and the X-ray emitting device (such as a bulb tube and a beam light device) are rigidly connected, so that the irradiation height of X-rays can be obtained by detecting the rack, the motion controller acquires the height data of the height sensor in real time, the opening position of the variable light-transmitting opening is determined by adjusting the height of the shielding plate, and additional operation of a doctor is not needed.

On one hand, the normal exposure of the part needing to be examined is ensured while other non-examined parts of the examined person are protected, on the other hand, for the operator of the X-ray examination device, the operation steps are not increased, and doctors in busy hospitals and equipment operators of the X-ray examination device are more willing to use the equipment of the patent.

Description of the drawings:

fig. 1 is a perspective view illustrating an installation position of an X-ray inspection apparatus according to an embodiment of the present invention;

fig. 2 is a schematic top view of the installation position of the X-ray inspection apparatus according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of an X-ray shielding apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an X-ray shielding apparatus according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of an X-ray shielding apparatus according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of an X-ray shielding apparatus according to another embodiment of the present invention;

fig. 7 is a schematic top view of an X-ray inspection apparatus according to another embodiment of the present invention;

fig. 8 is a schematic top view of an X-ray inspection apparatus according to another embodiment of the present invention;

fig. 9 is a schematic diagram of a circuit control structure of an X-ray shielding apparatus according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a circuit control structure of an X-ray shielding apparatus according to another embodiment of the present invention;

fig. 11 is a schematic diagram of a circuit control structure of an X-ray shielding apparatus according to another embodiment of the present invention;

fig. 12 is a schematic circuit diagram of a motion controller of an X-ray shielding apparatus according to an embodiment of the present invention.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The X-ray detection device provided by the utility model can be an old-fashioned film X-ray detection device and a new-style digital X-ray detection device. Although the old film X-ray detection device is replaced by the digital X-ray detection device, the sensitivity of the detection device is improved, and on the other hand, the radiation dose of direct imaging obtained by the part to be examined of the examinee when the X-ray examination device images is reduced. However, other non-inspection parts of the body of the examinee can be irradiated by the scattered X-ray during the imaging of the X-ray inspection device, so the technical proposal of the utility model is suitable for the film X-ray detection device or the digital X-ray detection device.

The embodiment of the utility model provides an in, through set up shield assembly between X-ray emission device and examinee, shield assembly has variable light transmission opening, and the X-ray that X-ray emission device sent shines the examined position that the examinee corresponds through variable light transmission opening, and remaining scattered light is shielded by shield assembly. Due to the shielding effect of the shielding device, the part which does not need to be checked can be well shielded, and the X-ray scattered light can not be radiated, so that the X-ray dosage of the checked person is greatly reduced, and the incidence of malignant tumors, particularly glandular malignant tumors, is reduced.

However, although the shielding device can effectively reduce the X-ray dosage received by the subject, it is an additional step for the operator of the X-ray examination apparatus to align the variable light-transmitting opening of the shielding device with the corresponding examined part of the subject. For an operator (doctor) of an X-ray examination apparatus in a busy hospital, such as a hospital in the third family, an extra step may result in hundreds of additional steps a day, greatly increasing the workload of the operator. Therefore, the embodiment of the utility model provides a still disclose an X-ray inspection device, can not increase under the condition of extra step, realize shielding device's variable printing opacity mouth and the regional automatic alignment of shining of X-ray to equipment operator's work load has significantly reduced, and the efficiency of diagnosis is improved, also is favorable to improving the prevalence of this equipment.

The existing X-ray machine generally has two main use scenes: standing position and bed position. Generally, the device is used for standing up when photographing the chest, lung, cervical vertebra, thoracic vertebra, lumbar vertebra, head and other parts of a human body. As shown in fig. 1-2, an embodiment of the present invention provides an X-ray inspection apparatus for standing position, including: the X-ray shielding device 100, the X-ray emitting device 200 and the X-ray detecting device 300, wherein the shielding device 100 is positioned between the X-ray emitting device 200 and the X-ray detecting device 300, and the area between the shielding device 100 and the X-ray detecting device 300 is used for accommodating the examinee 400, and the X-ray shielding device 100 is provided with a variable light-transmitting opening 116. The X-ray emitting device 200 includes a bulb 220 and a beam splitter 210. The irradiation range of the X-ray emitted from the bulb 220 is limited by the beam splitter 210, the X-ray is then irradiated to the examined part of the examinee 400 through the variable light-transmitting opening 116 of the X-ray shielding apparatus 100, and the X-ray finally reaches the detector 310 after passing through the examined part of the examinee 400, thereby completing the imaging.

Fig. 3 is a schematic diagram of an X-ray shielding apparatus 100 according to a first embodiment of the present invention. The X-ray shielding apparatus 100 includes upper and

lower shielding plates

111A, 111B for shielding X-rays, and both the upper and

lower shielding plates

111A, 111B can effectively block X-rays. In this embodiment, the shielding plate is made of a rigid material, and in other embodiments, the shielding plate may also be made of a flexible material or a shielding plate made of a mixture of a rigid material and a flexible material.

The shielding plate can be made of a heavy metal plate, such as a lead plate, or can also be made of lead-containing glass, or a lead-containing cloth or rubber material, such as a lead cloth commonly used for radiation protection lead clothing, or a lead rubber commonly used for protection of a security inspection machine, or a telescopic projection curtain. In other embodiments, the shielding plate may also be a roller blind, a venetian blind, a roman blind, a honeycomb blind, or the like. Since the way of implementing the rigid shield plate and the flexible shield plate is various, it is not described in detail in this document.

The upper and

lower shielding plates

111A, 111B are fixed to two

hanging bars

112A, 112B, the

hanging bars

112A, 112B are connected to a moving column 118, and both the upper and lower X-ray shielding plates can move up and down along the column 118. The upper end of the hanging rod 112B and the lower end of the X-ray shielding plate 111A constitute a variable light transmitting port 116 through which X-rays can pass. The height position and the opening size of the variable light transmission opening 116 can be changed by adjusting the height position of the hanging

rods

112A and 112B.

The hanging

rods

112A, 112B and the upright 118 can move relatively. In order to enable the two to automatically slide on the upright 118, a power device may be mounted on the upright 118 or the hanging

rods

112A and 112B, the power device may be configured as an electric cylinder, a hydraulic cylinder, a push rod, a worm gear, or the like, or the hanging

rods

112A and 112B and the upright 118 may be relatively moved by other electromagnetic or pneumatic devices such as a stepping motor. The motion controller is connected with the power equipment; the connection is a wired or wireless connection; the wireless connection may be a bluetooth, radio or WiFi based connection.

In the embodiment of the present invention, the shielding plate is supported by the movable column 118, and the universal wheels are installed at the bottom. In other embodiments, the posts may be fixed or a frame structure may be used to support the shield panels, or a ceiling structure may be used to support the shield panels.

In this embodiment, the upper and lower

X-ray shielding plates

111A, 111B are offset from each other (similar to a sliding door structure of a home bathroom), and the two X-ray shielding plates may be partially overlapped. In other embodiments, the upper and lower X-ray shielding plates are located on the same plane.

In another embodiment, referring to fig. 4, another two-piece X-ray shielding apparatus is further provided. The upper and

lower shielding plates

121A, 121B are fixed to two

movable posts

128A, 128B, and both the upper and lower X-ray shielding plates can move up and down along the two posts.

In another embodiment, referring to fig. 5, an X-ray shielding apparatus with four pieces of upper, lower, left and right pieces is provided. The X-ray shielding device with four pieces of upper, lower, left and right is similar to the X-ray shielding device in figure 3. The upper, lower, left and right X-ray shielding plates can effectively block X-rays. The upper, lower, left and right

X-ray shielding plates

121A, 121B, 121C, 121D are each fixed to a movable column 138, and the upper, lower, left and right

X-ray shielding plates

121A, 121B are each movable up and down along the column 138. The two left and right

X-ray shielding plates

121C and 121D can move left and right. The four

X-ray shielding plates

121A, 121B, 121C, and 121D can enclose a variable light-transmitting opening 116 with a variable size.

In another embodiment, referring to fig. 6, another shielding device with four sheets, upper, lower, left and right, is provided. This four-piece type shielding apparatus is similar to the shielding apparatus of fig. 4, and the only difference is that the four

X-ray shielding plates

121A, 121B, 121C, 121D are mounted in a movable frame 148. The upper, lower, left and right four

X-ray shielding plates

121A, 121B, 121C, 121D are rectangular and can effectively block X-rays. The upper and lower

X-ray shielding plates

121A, 121B can move up and down along the frame, the left and right

X-ray shielding plates

121C, 121D can move left and right along the frame, and the upper, lower, left and right

X-ray shielding plates

121A, 121B, 121C, 121D can constitute a variable light transmission opening 116.

In this embodiment, the variable light transmission opening 116 is substantially rectangular or square, in other embodiments, the variable light transmission opening may be diamond-shaped or have other shapes, because the illumination shape of the beam splitter of the X-ray apparatus is now substantially rectangular or square, and of course, the illumination shape of a small number of beam splitters is other shapes such as diamond-shaped, so the shape of the variable light transmission opening may be diamond-shaped or have other shapes. Meanwhile, in order to prevent the variable light-transmitting opening from being excessively reduced and clamp the hand in the use process, the device is also provided with an anti-clamping device, so that the hand can not be clamped and injured by the variable light-transmitting opening.

In this embodiment, the X-ray shielding apparatus further comprises a height sensor 90 for detecting the height of the gantry of the X-ray examination apparatus. Since the heights of the machine frame and the X-ray emitting device (such as a bulb tube and a beam splitter) are synchronously adjusted in many devices, the irradiation height of X-rays can be obtained by detecting the height of the machine frame, then the motion controller acquires the height data of the machine frame transmitted by the height sensor in real time, and the opening position of the variable light-transmitting opening can be determined by correspondingly adjusting the height of the shielding plate without additional operation of a doctor.

In one embodiment, referring to fig. 3 or fig. 4, a height detection link 180 is mounted on the column, one end of the height detection link 180 is movably connected to the column, and the other end is provided with a height sensor 90, so that the height sensor can be moved above the frame of the X-ray inspection apparatus by rotating/extending the height detection link. Because the height detection connecting rod 180 and the upright post can rotate, and the height detection connecting rod 180 can extend in a telescopic manner, the height sensor 90 positioned at the end part of the height detection connecting rod 180 can move to the position above one part of the rack of the X-ray inspection device conveniently, the height of the rack is detected from top to bottom, and the moving height of the shielding plate is obtained by obtaining the current height of the rack. Since the height sensor 290 is installed above the housing, the installation and detection of the height sensor is not affected regardless of the movement of the housing or the walking of the person.

Referring to fig. 3, only one height sensor is disposed on the pillar. Referring to fig. 4, the height sensors may be two or more, and are disposed on two sides of the X-ray shielding device for convenient use.

In this embodiment, the height sensor is a laser distance sensor. In other embodiments, the height sensor may be other sensors capable of detecting relative distance, such as an ultrasonic distance sensor, an infrared distance sensor, and the like.

In this embodiment, the height sensor is connected to the motion controller by a wire. In other embodiments, the X-ray shielding device further comprises a wireless signal receiver, the wireless signal receiver is connected with the motion controller, the height sensor is a wireless height sensor, and the wireless height sensor is connected with the motion controller through wireless data transmission. The wireless signal receiver may be a Lora module, a WiFi module, etc.

Referring to fig. 7, the height sensor is disposed above the detector 310 of the X-ray shielding apparatus. Since the X-ray irradiation area changes (i.e., the position of the bulb tube changes in the vertical and horizontal directions), the position of the corresponding detector also needs to be adjusted synchronously. Therefore, by detecting the up-down position of the detector 310, the center position of the X-ray irradiated region can be obtained. In general, the X-ray irradiation area (the width of the top, bottom, left, and right) of one detection type (for example, a chest radiograph) is determined, and therefore, the height positions of the top and bottom shielding plates can be synchronously obtained by obtaining the center position of the X-ray irradiation area. In other embodiments, if there are two left and right shielding plates, the widths may be adjusted to the corresponding widths synchronously.

In other embodiments, the gantry comprises one or more of a crossbar, a sickle arm, a Z-arm, a bulb, a beam light, and a detector of the X-ray examination apparatus.

Referring to fig. 8, the height sensor 90 is disposed above the cross arm 910 of the X-ray inspection apparatus. In the prior art, there are many different X-ray inspection devices, such as a cross arm, a sickle arm, and a Z-arm X-ray inspection device, in which the cross arm, the sickle arm, and the Z-arm are rigidly connected to a bulb, and by detecting the height of the cross arm, the sickle arm, or the Z-arm, a fixed difference is increased or decreased, and the height position of the bulb can also be obtained, i.e., the central position of an X-ray irradiation area can be obtained, and thus the motion controller obtains the height position information of the upper and lower shielding plates.

In other embodiments, the height detection link of fig. 3 or 4 may be replaced with the shapeable gimbal of fig. 5 or 6, one end of which is connected to the shield plate support structure and the other end of which is provided with a height sensor, and the shapeable gimbal is bent to allow the height sensor to be moved above the frame of the X-ray inspection apparatus, which is convenient and low in cost.

In this embodiment, referring to fig. 9, after the position of the gantry is obtained by the height sensor 90, the motion controller 10 drives the shielding plate by controlling the power device through the correspondence between the gantry height and the center position of the X-ray irradiation area, so as to adjust the height of the shielding plate, thereby determining the opening position of the variable light-transmitting opening, and making the opening position coincide with the X-ray irradiation area.

In other embodiments, referring to fig. 10, the X-ray shielding apparatus further includes a shielding apparatus control signal input interface 20, the shielding apparatus control signal input interface 20 is connected to the motion controller 10, the motion controller can obtain the height of the rack through the height sensor 90, so as to obtain the height positions of the upper and lower shielding plates, and adjust the height of the shielding plates, or directly adjust the height and width positions of the shielding plates based on the control signal obtained by the shielding apparatus control signal input interface 20, so that the position and size of the variable light-transmitting opening are consistent with the X-ray irradiation area.

In one embodiment, the shielding device control signal input interface is connected with a control computer of the X-ray machine or a computer of the DR workstation, and the motion controller is controlled by a control signal sent by the control computer of the X-ray machine or the computer of the DR workstation, so that the height and the width position of the shielding plate are adjusted, and finally the size of the variable light-transmitting opening is consistent with the irradiation area of the X-ray. The method how to adjust the shielding plate is many, for example, by obtaining the size of the visible light field emitted by the beam splitter, the height and width position of the shielding plate are adjusted, so that the size of the final variable light-transmitting opening is consistent with the irradiation area of the X-ray; or the height and width positions of the shielding plates are acquired, for example, by inputting information on the subject including sex, age, examined part, approximate body type, and the like, and information on the gantry including the model of the gantry, the position of the probe, and the like. For example, by inputting the body size of the subject, the positions of the left and right shielding plates can be adjusted, thereby adjusting the width of the variable light transmission opening.

In another embodiment, the shielding device control signal input interface may also be connected to a motion controller of the X-ray emitting device. Since the height of the X-ray emitting device (bulb) is identical to the height of the X-ray irradiation area, when the position of the X-ray emitting device (bulb) is adjusted, the position of the corresponding X-ray irradiation area is also changed, and thus the position of the corresponding shielding plate can be directly adjusted by acquiring the control data of the motion controller of the X-ray emitting device. Meanwhile, after the X-ray emitting device adjusts the irradiation area of the X-ray, the control signal can be directly sent to the motion controller of the X-ray shielding device through the motion controller of the X-ray emitting device, and the position of the corresponding shielding plate can be directly adjusted.

In another embodiment, please refer to fig. 11, the motion controller 10 of the X-ray shielding apparatus may also be connected to the shielding apparatus control signal input interface 20 only. The movement of the shielding plate of the X-ray shielding device is completely controlled by a control computer of an X-ray machine, a computer of a DR workstation or a motion controller of an X-ray emission device to send a control signal, and the motion controller 10 of the X-ray shielding device is utilized to adjust the position of the corresponding shielding plate, so that the automatic alignment of the variable light-transmitting opening of the shielding device and the irradiation area of the X-ray can be realized under the condition of not increasing additional steps, the workload of equipment operators is greatly reduced, the diagnosis efficiency is improved, and the popularization rate of the equipment is favorably improved.

As shown in FIG. 12, the motion controller 10 of the shielding device of the present invention comprises a power module 11, a main control board 13, a communication module 15, height sensor controllers 16A-B, an input and display terminal 17, motor drivers 18A-D and encoder controllers 19A-D. The power module 11 is responsible for supplying power to the entire shielding device's motion controller 10. The main control board 13 includes a microprocessor and a memory chip. When the main control board 13 can be connected to the control computer of the X-ray machine, the computer of the DR workstation and the motion controller of the X-ray emitting device through the communication module 15, as shown in fig. 12, the main control board 13 can obtain required information from the control computer of the X-ray machine, the computer of the DR workstation and the motion controller of the X-ray emitting device through the communication module 15. Meanwhile, the main control board 13 can also acquire rack height information provided by the height sensor through the

height sensor controller

16A or 16B. The main control board 13 can then, after performing the necessary processing on this acquired information, issue control signals to the motor drivers 18A-D, and to the encoder controllers 19A-D, to precisely control the motor motion. The control result of the motion controller 10 of the shielding device can be displayed by means of an input and display terminal 17.

When the main control panel 13 cannot acquire necessary information from the X-ray machine workstation computer 110, the input and display terminal 17 can be used to input information through a touch screen or buttons in addition to displaying partial results, and for example, can acquire information necessary for simplicity, such as sex, age, examined part, and general body type of the subject. Meanwhile, the main control board 13 can also acquire rack height information provided by the height sensor through the

height sensor controller

16A or 16B. Therefore, the main control board 13 in the movement controller 10 of the shielding device acquires the information on the subject and the gantry height information, and the main control board 13, after performing necessary processing on these acquired information, can send control signals to the motor drivers 18A-D and the encoder controllers 19A-D to precisely control the movement of the motor to control the position and size of the variable light-transmitting opening of the shielding device.

In other embodiments, it may be desirable to only control the height of the variable light transmission opening of the shielding device at certain times, but not the size of the variable light transmission opening of the shielding device. At this time, the main control board 13 can also acquire the rack height information provided by the height sensor through the

height sensor controller

16A or 16B. After the main control board 13 performs the necessary processing of the gantry height information, it is able to send control signals to the motor drivers 18A-B, and to the encoder controllers 19A-B to precisely control the motor motion to control the height position of the light-passing opening of the shielding device.

The motion controller 10 of the light opening of the shielding device of this patent, shown in fig. 12, contains four motor drives 18A-D. In practical applications, the motor drive can be increased or decreased as more practical. The motor has various forms, and a stepping motor, a servo motor, a direct current motor, an alternating current motor and the like are common. The motors are not identical in control accuracy and output power. In practical application, people need to make a selection according to actual requirements of actual control precision, output power and cost. Generally, the control accuracy of the stepping motor and the servo motor is high but the cost is high, and the control accuracy of the direct current motor and the alternating current motor is low but the cost is low. When one uses stepper motors or servo motors, it is generally not necessary to use encoder controllers 19A-D at the same time. However, when using a dc motor or an ac motor, higher control accuracy can be achieved using the encoder controllers 19A-D.

The main control board 13 and the power module 11 and the communication module 15 in the motion controller 10 of the inventive shielding apparatus of this patent are shown separated in fig. 12. In practical applications, one can fully integrate the power module 11 and the communication module 15 with the main control board 13. Of course, the motor drivers 18A-D or encoder controllers 19A-D shown in FIG. 12 are integrated on the main control board 13. In practice, one could also completely separate the motor drives 18A-D or the encoder controllers 19A-D from the main control board 13. In practical applications, one may choose to use or not use the input and display terminal 17 according to the needs of the practical application. Generally, the motion controller 10 of the light shielding device light opening of the present invention can work properly with or without the input and display terminal 17. Of course, the use of the input and display terminal 17 in the motion controller 10 of the light-shielding device opening of the present invention will make it easier for the user to understand the working status. However, this adds some cost. The main control board 13 shown in fig. 12 contains two

height sensor controllers

16A or 16B. This allows one to use the height sensor on the left or right side of the shielding as desired. Of course, two

height sensor controllers

16A or 16B can also be used to connect two height sensors to the motion controller 10 of the light opening of the shielding device of the present invention when needed. In practice, one may choose more or fewer height sensor controllers. Besides, the motion controller 10 of the light-passing opening of the shielding device disclosed by the patent can be realized by a microprocessor, and can also be completely realized by a very common Programmable Logic Controller (PLC) in industrial automation control. One need only replace the main control board 13 in the figure with a Programmable Logic Controller (PLC). The motion controller of the light-passing opening of the shielding device invented by this patent includes these variations and generalizations.

The above only is the preferred embodiment of the present invention, not therefore the limit the patent protection scope of the present invention, all applications the equivalent structure transformation made by the contents of the specification and the drawings of the present invention is directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. A height sensor based X-ray shield apparatus comprising: a shield plate support structure, a movable shield plate, a power device for driving the shield plate, a motion controller, and a height sensor,

2. The X-ray shielding apparatus of claim 1, further comprising a height detection link, one end of said height detection link being movably connected to the shielding plate support structure and the other end thereof being provided with a height sensor, said height sensor being movable above the housing of the X-ray inspection apparatus by selecting/extending said height detection link.

3. The X-ray shielding apparatus of claim 1, further comprising a shapeable gimbal having one end attached to the shielding plate support structure and the other end provided with a height sensor, wherein the shapeable gimbal is bent to allow the height sensor to be moved above a housing of the X-ray inspection apparatus.

4. The X-ray shield apparatus of claim 1, wherein at least 2 of said height sensors are located on each side of the X-ray shield apparatus.

5. The X-ray shield apparatus of claim 1 wherein said housing includes one or more of a crossbar, a sickle arm, a Z-arm, a bulb, a beam light, and a detector of the X-ray examination apparatus.

6. The X-ray shield apparatus of claim 1, wherein said height sensor is a laser distance sensor, an infrared distance sensor or an ultrasonic distance sensor.

7. The X-ray shielding apparatus of claim 1, wherein said shielding plates comprise upper and lower shielding plates, and the adjustment of the variable light transmission opening is achieved by height adjustment of the upper and lower shielding plates.

8. The X-ray shielding apparatus of claim 7, wherein said shielding plates further comprise left and right shielding plates, and the width adjustment and center position adjustment of the variable light-transmitting opening are realized by the horizontal position adjustment of the left and right shielding plates.

9. An X-ray inspection apparatus based on a height sensor, comprising: the apparatus of any of claims 1 to 8, wherein the apparatus is located between the apparatus and the apparatus for X-ray detection, and the area between the apparatus and the apparatus for X-ray shielding is used for accommodating the subject.