A ray collimation adjustment device

Abstract

The present invention provides a radiation collimation adjustment device, which includes: a detection mechanism, a collimation bar and a protective box; wherein the collimation bar is provided with a radiation passage slot so that the radiation emitted by the radiation emitting mechanism passes through the radiation passage slot; the collimation bar is movably arranged on the protective box, and the collimation bar is connected to a driving mechanism for driving the collimation bar to move; the detection mechanism is arranged below the protective box. The present invention movably supports the collimation bar through the protective box so that the collimation bar can move under the drive of the driving mechanism to adjust the position of the collimation bar; the detection mechanism receives and senses the radiation emitted from the radiation passage slot, and controls the driving mechanism according to the energy data of the radiation to adjust the position of the collimation bar, thereby making the radiation source in the radiation emitting mechanism, the radiation passage slot and the sensor in the radiation receiving mechanism in the same plane, thereby solving the problem of difficulty in adjusting the position of the narrow slot in the radiation protection device.

Description

Technical Field

[0001] The invention relates to the technical field of mining machinery, and in particular to a ray collimation adjustment device. Background Art

[0002] In recent years, with the rapid growth of demand for mineral resources, ore has been mined and processed in large quantities. Mining companies will inevitably have a certain amount of waste rock mixed with the ore during mining operations. At present, the sorting machine is used for pre-waste disposal by intelligent sorting machines and is used in the mineral processing link.

[0003] The sorting machine generally includes a feeding mechanism, a transmission mechanism, a detection mechanism, and a sorting mechanism. The detection mechanism includes a ray emitting device, a ray protection device, and a ray receiving device. The ray is emitted from the ray emitting device, passes through the ray protection device, and finally reaches the ray receiving device. The ray protection device is a transmission channel for the ray, and the exit is designed as a narrow slit, which not only prevents a large range of radiation leakage of the ray, but also ensures that the ray receiving device can perceive the ray.

[0004] At present, the radiation protection device is generally designed as a double-layer structure with gradually increasing width, with the inner layer being lead plate and the outer layer being steel plate. The narrow slit at the exit is bonded with glass fiber board, which can not only play a sealing role, but also minimize the attenuation of radiation. The width of this narrow slit is generally 1 to 6 mm. Due to the manufacturing precision problem, the narrow slit at the exit of the general radiation protection device will have manufacturing errors. If the error causes the radiation to pass through the narrow slit and cannot be completely irradiated to the radiation receiving device, it is necessary to adjust the radiation transmitting device, the radiation protection device and the radiation receiving device so that the radiation source in the radiation transmitting device, the narrow slit in the radiation protection device and the sensor in the radiation receiving device are in the same plane. Manual adjustment is required slowly. Since the radiation is invisible to the naked eye, it can only be judged from the signal. In addition, X-rays have radiation hazards and must be sealed when used. No manual operation can be performed. Therefore, each adjustment requires the power-on and power-off operation of the optical path, and continuous operation cannot be performed. In addition, in addition to the precision problem, the shielding box is also located in the closed area inside the equipment, making the overall adjustment very difficult. Summary of the invention

[0005] In view of this, the present invention proposes a radiation collimation adjustment device, aiming to solve the problem of difficulty in adjusting the position of the narrow slit in the existing radiation protection device.

[0006] The present invention proposes a radiation collimation adjustment device, which includes: a detection mechanism, a collimation bar and a protective box; wherein the collimation bar is provided with a radiation passing slit so that the radiation emitted by a radiation emitting mechanism passes through the radiation passing slit; the collimation bar is movably arranged on the protective box, and the collimation bar is connected to a driving mechanism for driving the collimation bar to move; the detection mechanism is arranged below the protective box, for receiving and sensing radiation emitted from the radiation passing slit, and controlling the driving mechanism according to the energy data of the radiation, so as to control the adjustment of the position of the collimation bar.

[0007] Furthermore, in the above-mentioned radiation collimation adjustment device, the collimation strips include: a base and two groups of protective strips; wherein the two groups of protective strips are arranged on the base, and there is a gap between the two groups of protective strips to form a radiation passage slot; at least one group of the protective strips is movably connected to the base to adjust the width of the radiation passage slot.

[0008] Furthermore, in the above-mentioned radiation collimation adjustment device, the protective strip comprises: a lead strip and two copper strips; wherein the lead strip is stacked between the two copper strips, and the lead strip is used to block radiation.

[0009] Furthermore, in the above-mentioned ray collimation adjustment device, the driving mechanism includes: a transverse driving component and a longitudinal driving component; wherein the transverse driving component is connected to the collimation bar, and is used to apply a transverse driving force to the collimation bar so that the collimation bar moves in the transverse direction; the longitudinal driving component is connected to the collimation bar, and is used to apply a longitudinal driving force to the collimation bar so that the collimation bar moves in the longitudinal direction.

[0010] Furthermore, in the above-mentioned ray collimation adjustment device, the lateral drive component and / or the longitudinal drive component includes: a drive motor and a push-pull rod; wherein, the power output end of the drive motor is connected to the push-pull rod through a transmission member, and the transmission member is used to convert the rotation of the drive motor into reciprocating linear movement of the push-pull rod to drive the collimation strip to move horizontally or vertically.

[0011] Furthermore, in the above-mentioned ray collimation adjustment device, the transmission member is a ball screw mechanism.

[0012] Furthermore, in the above-mentioned radiation collimation adjustment device, a wide slit is provided at the bottom of the protective box, and its width is greater than the width of the radiation passing slit.

[0013] Furthermore, in the above-mentioned ray collimation adjustment device, the detection mechanism is also used to determine the position of the ray passing through the slit based on the energy data of the ray, and when the position of the ray passing through the slit is not at a preset position, a driving signal is emitted to the driving mechanism so that the driving mechanism drives the collimation bar to move until the position of the ray passing through the slit reaches the preset position.

[0014] Furthermore, in the above-mentioned ray collimation adjustment device, the detection mechanism is also used to determine the absolute value of the difference between the energy data of the ray and the standard energy data. When the absolute value of the difference between the energy data of the ray and the standard energy data is less than or equal to a second threshold value, it is determined that the position of the ray passing through the slit is not at a preset position, and a driving signal is emitted to the driving mechanism so that the driving mechanism drives the collimation bar to move until the absolute value of the difference between the energy data of the ray and the preset energy is less than or equal to the second threshold value, and it is determined that the position of the ray passing through the slit reaches the preset position, and the emission of the driving signal is stopped to complete the adjustment of the collimation bar position.

[0015] Furthermore, in the above-mentioned ray collimation adjustment device, the detection mechanism is arranged on the ray receiving mechanism, and is also used to acquire the first energy data group and the second energy data group in real time, fit the data in the first energy data group to obtain a first fitting curve, fit the data in the second energy data group to obtain a second fitting curve, determine the first data point with the largest ordinate in the first fitting curve and the second data point with the largest ordinate in the second fitting curve, and when the ordinate of the first data point is different from the ordinate of the second data point, control the ray receiving mechanism to rotate with the corresponding position of the first energy data group as a reference to twist the corresponding position of the first energy data group until the first data point is the same as the second data point, thereby completing the tilt correction.

[0016] Furthermore, in the above-mentioned ray collimation adjustment device, the detection mechanism is used to determine the absolute value of the difference between the horizontal coordinate of the first data point and the standard horizontal coordinate in the first direction when the first data point is the same as the second data point, and when the absolute value of the difference is greater than the first threshold value, control the ray receiving mechanism to move along the first direction until the absolute value of the difference between the horizontal coordinate of the first data point and the standard horizontal coordinate in the first direction is less than or equal to a preset value, thereby completing the centering adjustment in the first direction; the detection mechanism is also used to obtain a third energy data group of the received ray, fit the data in the third energy data group to obtain a third fitting curve, determine the third data point with the largest vertical coordinate in the third fitting curve, and the absolute value of the difference between the horizontal coordinate of the third data point and the standard horizontal coordinate in the second direction, and when the absolute value of the difference is greater than the third threshold value, control the ray receiving mechanism to move along the second direction until the absolute value of the difference between the horizontal coordinate of the third data point and the standard horizontal coordinate in the second direction is less than or equal to the preset value, thereby completing the centering adjustment in the second direction.

[0017] Furthermore, in the above-mentioned ray collimation adjustment device, the detection mechanism is also used to obtain total energy data in real time, determine the absolute value of the difference between the total energy data and the standard energy data, and when the absolute value of the difference between the total energy data and the standard energy data is less than or equal to a second threshold, transmit a driving signal to the driving mechanism so that the driving mechanism drives the collimation bar to move until the absolute value of the difference between the vertical coordinate of the first data point and the preset energy is less than or equal to the second threshold, thereby completing the adjustment of the collimation bar position.

[0018] The ray collimation adjustment device provided by the present invention uses a collimation bar as a ray protection mechanism so that the rays emitted by the ray emitting mechanism only pass through the ray passing slit, and the rays and part of the rays passing through the collimation bar are blocked; the collimation bar is movably supported by a protection box so that the collimation bar can be moved under the drive of a driving mechanism to adjust the position of the collimation bar, that is, adjust the position of the ray passing slit; the rays emitted from the ray passing slit are received and sensed by a detection mechanism, and the position of the ray passing slit is judged according to the energy data of the rays; when the position of the ray passing slit is not at a preset position, a driving signal is emitted to the driving mechanism so that the driving mechanism drives the collimation bar to move until the position of the ray passing slit reaches the preset position, so as to adjust the position of the collimation bar, thereby making the ray source in the ray emitting mechanism, the ray passing slit and the sensor in the ray receiving mechanism in the same plane, thereby solving the problem of difficulty in adjusting the narrow slit position in the ray protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 A front view of a ray collimation adjustment device provided in an embodiment of the present invention;

[0021] Figure 2 A top view of a ray collimation adjustment device provided in an embodiment of the present invention;

[0022] Figure 3 A flowchart of the operation of the ray collimation adjustment device provided in an embodiment of the present invention;

[0023] Figure 4 An attenuation diagram of an X-ray source provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of a collimation strip provided by an embodiment of the present invention;

[0025] Figure 6 A cross-sectional view of a protection strip provided for an embodiment of the present invention;

[0026] Figure 7 A front view of the driving mechanism and the collimating strips provided in an embodiment of the present invention;

[0027] Figure 8 A top view of the driving mechanism and the collimation strips provided in an embodiment of the present invention;

[0028] Fig. 9 A schematic diagram of the structure of a transverse drive assembly or a longitudinal drive assembly provided in an embodiment of the present invention;

[0029] Description of reference numerals:

[0030] 1-detection mechanism, 2-driving mechanism, 21-lateral driving assembly, 22-longitudinal driving assembly, 231-driving motor, 232-push-pull rod, 233-transmission member, 3-collimation strip, 31-ray passing slot, 32-base, 33-protection strip, 331-lead strip, 332-copper strip, 4-protection box. DETAILED DESCRIPTION

[0031] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] See also Figures 1 to 3 , which shows the preferred structure of the ray collimation adjustment device provided by the embodiment of the present invention. As shown in the figure, the ray collimation adjustment device includes: a detection mechanism 1, a driving mechanism 2, a collimation bar 3, and a protective box 4; wherein,

[0033] The collimating strip 3 is provided with a ray passing slit 31, so that the rays emitted by the ray emitting mechanism (not shown in the figure) can pass through the ray passing slit 31. Specifically, the collimating strip 3 can be used as a ray protection mechanism, so that the rays emitted by the ray emitting mechanism only pass through the ray passing slit 31, and the rays and part of the rays are blocked by the collimating strip 3, that is, after passing through the collimating strip 3, only the rays coming out of the ray passing slit 31 form a thin strip. The ray emitting mechanism can be arranged above the collimating strip 3, and the ray source of the ray emitting mechanism is used to emit rays; in the present embodiment, the ray source can be an X-ray source, which generates a cone beam X-ray band with a certain fan angle. Figure 4As shown, the X-ray irradiation energy decreases with the center of the cone beam as the origin, that is, it decreases from the center position in both the cross section and the longitudinal section.

[0034] The collimator bar 3 is movably arranged on the protective box 4, and the collimator bar 3 is connected to a driving mechanism 2 for driving the collimator bar 3 to move so as to adjust the position of the ray passing through the slit 31. Specifically, the collimator bar 3 can be arranged in the protective box 4 so as to support and protect the collimator bar 3 through the protective box 4; for example, the collimator bar 3 can be supported on the bottom plate of the protective box 4, and the collimator bar 3 can be moved in a lateral direction (such as Figure 2 horizontal direction as shown) and vertical direction (as shown) Figure 2 The protective box 4 is arranged to move in the vertical direction (as shown in the figure), so that the horizontal and vertical positions of the ray passing slit 31 can be adjusted by adjusting the horizontal and vertical positions of the collimating strip 3. Figure 1 and Figure 2 As shown, the collimator bar 3 is connected to a driving mechanism 2, and the driving mechanism 2 can drive the collimator bar 3 to move, for example, horizontally or longitudinally, according to the energy of the ray emitted from the ray passing through the slit 31, so as to adjust the position of the ray passing through the slit 31. The length direction of the collimator bar 3 is arranged perpendicular to the conveying direction of the belt conveyor, such as Figure 2 It can be set horizontally, and at the same time, the ray passing slit 31 is arranged along the length direction of the collimating strip 3, so that the ray passing slit 31 emits rays to form a thin strip structure perpendicular to the conveying direction of the belt conveyor, so as to detect ore in the parts of multiple belt conveyors that are in the thin strip structure. Of course, the collimating strip 3 and the ray passing slit 31 can also be arranged along the direction of the belt running, and this embodiment does not impose any restrictions on this. In this embodiment, a wide slit (not shown in the figure) that is compatible with the ray passing slit 31 can be provided on the bottom of the protective box 4, that is, the bottom plate, and the width of the wide slit is greater than the width of the ray passing slit 31 to avoid interference rays. Among them, the driving mechanism 2 can make a preliminary adjustment to the position of the collimating strip 3 according to the position of the ray passing slit 31, so that the ray passing slit 31 irradiates the detection mechanism 1.

[0035] The detection mechanism 1 is arranged below the protective box 4. The detection mechanism 1 is used to receive and sense the rays emitted from the ray passing slit 31, and control the driving mechanism 2 according to the energy data of the rays to control the adjustment of the position of the collimating strip 3, so that the ray source in the ray emitting mechanism, the ray passing slit 31 and the sensor in the ray receiving mechanism are in the same plane, and the feedback is fed back to the detection mechanism 1, and the detection mechanism 1 stops sending signals to form a closed loop. Specifically, preferably, the position of the ray passing slit 31 can be judged according to the energy data of the rays. When the position of the ray passing slit 31 is not in the preset position, a driving signal is emitted to the driving mechanism 2, so that the driving mechanism 2 drives the collimating strip 3 to move until the position of the ray passing slit 31 reaches the preset position, so as to adjust the position of the collimating strip 3, so that the ray source in the ray emitting mechanism, the ray passing slit 31 and the sensor in the ray receiving mechanism are in the same plane, and the feedback is fed back to the detection mechanism 1, and the detection mechanism 1 stops sending signals to form a closed loop. Figure 4 As shown, the X-ray irradiation energy decreases with the center of the cone beam as the origin, and a rectangular structure of the strongest energy area is formed on the horizontal plane below the ray source, such as the horizontal plane where the detection mechanism 1 is located. At the same time, the energy detected at each lateral position of the detection mechanism 1 can be fitted into a parabolic curve with an opening downward, and the energy detected at each longitudinal position of the detection mechanism 1 can be fitted into a parabolic curve with an opening downward; in order to improve the detection effect of the detection mechanism 1, preferably, the detection mechanism 1 can be a rectangular structure and be located in the strongest energy area to receive the rays in the strongest energy area; in order to enable the detection mechanism 1 to receive the rays in the strongest energy area, at the same time, X-rays at positions other than the detection mechanism 1 are effectively shielded. Further preferably, at the preset position, the rays can be emitted through the slit 31 in the strongest energy area. X-rays have a certain degree of radiation to the environment and the human body. Electronic devices that are exposed to X-rays for a long time will be damaged to a certain extent. X-rays irradiated at a certain angle on the ore at the non-detection position will cause refraction, scattering and other phenomena, thereby affecting the signal of the vertically irradiated detection position, and then interfering with the final signal detection. Therefore, it is necessary to effectively shield the rays at other positions; of course, the preset position may also be other positions, for example, only emitting part of the rays in the strongest energy area.

[0036] In this embodiment, the detection mechanism 1 may also be arranged above the ray receiving mechanism, and may sense the energy of the ray emitted from the ray passing slit 31 to the ray receiving mechanism, so as to determine the position of the ray passing slit 31 according to the sensed energy, and adjust the position of the ray passing slit 31; to facilitate the position adjustment of the sensor on the ray receiving mechanism, preferably, the detection mechanism 1 is synchronously adjusted with the sensor of the ray receiving mechanism, for example, the detection mechanism 1 may be arranged on the ray receiving mechanism and matched with the sensor on the ray receiving mechanism, so as to adjust the position of the ray receiving mechanism according to the energy of the ray sensed by the detection mechanism 1, and the detection mechanism 1 is synchronously adjusted accordingly, for example, moved and rotated, until the sensor of the ray receiving mechanism is parallel to the ray passing slit 31, and the sensor of the ray receiving mechanism is moved to the position of the strongest energy of the ray transmission, that is, directly below the emission source of the ray emitting mechanism, so that the ray source in the ray emitting mechanism, the ray passing slit 31 and the sensor in the ray receiving mechanism, such as the detection mechanism 1, are in the same plane; of course, the detection mechanism 1 can also be used as a sensor in the ray receiving mechanism, not only to achieve position adjustment, but also to identify whether the mineral contains low-grade waste rock and / or surrounding rock according to the received and sensed rays. In this embodiment, the detection mechanism 1 is used as a sensor in the radiation receiving mechanism for explanation.

[0037] See also Figure 5 , which is a schematic diagram of the structure of the collimator bar provided by an embodiment of the present invention. As shown in the figure, the collimator bar 3 comprises: a base 32 and two groups of protective bars 33; wherein the two groups of the protective bars 33 are both arranged on the base 32, and there is a gap between the two groups of the protective bars 33 to form a ray passing slit 31; at least one group of the protective bars 33 is connected to the base 32 in a movable manner, so as to adjust the width of the ray passing slit 31, as shown in FIG. Figure 2 The length in the vertical direction shown. Specifically, a wide slit (not shown in the figure) adapted to the ray passage slit 31 may be provided on the base 32, and the width of the wide slit is greater than the width of the ray passage slit 31 to avoid interfering with the rays. Of course, the base 32 may also be made of a material that does not affect the rays. Both groups of protective strips 33 are arranged along the length direction of the base 32, that is, the two groups of protective strips 33 are arranged in parallel on the base 32, and there is a gap between the two groups of protective strips 33 to form the ray passage slit 31, and one group of the protective strips 33 or two groups of protective strips 33 are connected to the base 32 in a movably manner along the width direction of the base 32 to adjust the position of one group or two groups of protective strips 33, thereby adjusting the width of the ray passage slit 31. The width of the ray passage slit 31 can be 1 to 6 mm.

[0038] Continue to see Figure 5 and Figure 6, the protection strip 33 includes: a lead strip 331 and two copper strips 332; wherein the lead strip 331 is stacked between the two copper strips 332, and the lead strip 331 is used to block the rays, so that the rays are emitted only from the ray passing slit 31, forming a thin strip structure. Specifically, the side walls of the lead strip 331 and the two copper strips 332 are arranged flush, and the lead strip 331 is stacked between the two copper strips 332, so that the rays are blocked by the lead strip 331 sandwiched in the middle, that is, when the rays emitted by the ray emitting mechanism pass through the collimating strip 3, most of the rays are blocked by the lead strip 331, so that the rays emitted from the ray passing slit 31 are in the shape of a thin and long strip.

[0039] Continue to see Figure 1 and Figure 2 as well as Figures 7 and 8 The driving mechanism 2 includes: a transverse driving component 21 and a longitudinal driving component 22; wherein the transverse driving component 21 is connected to the collimating strip 3 to apply a transverse driving force (the direction of the transverse driving force is as follows Figure 8 The longitudinal driving component 22 is connected to the collimating bar 3 to apply a longitudinal driving force (the direction of the longitudinal driving force is as shown in FIG. Figure 8 The collimating strip 3 is moved in the vertical direction as shown in FIG. Figure 2As shown, both the transverse driving component 21 and the longitudinal driving component 22 can apply a push-pull force to the collimation bar 3, so that the collimation bar 3 can move leftward or rightward under the action of the transverse driving component 21 to achieve the transverse movement of the collimation bar 3, and can also move upward or downward under the action of the longitudinal driving component 22 to achieve the longitudinal movement of the collimation bar 3. In this embodiment, there can be two transverse drive components 21, which are respectively arranged on the left and right sides of the collimation bar 3, and are respectively connected to the left and right ends of the collimation bar 3, and push and pull forces are respectively applied to the left and right ends of the collimation bar 3, thereby ensuring the stability of the transverse movement of the collimation bar 3; there can be four longitudinal drive components 22, two of which are located on the upper side of the collimation bar 3 and connected to the left and right ends of the collimation bar 3, and the other two are located on the lower side of the collimation bar 3 and connected to the left and right ends of the collimation bar 3, thereby ensuring the stability of the longitudinal movement of the collimation bar 3 and avoiding the tilting of the collimation bar 3 during movement; each transverse drive component 21 and longitudinal drive component 22 is connected to the base 32, so that the base 32, the protective strip 33 and the ray passing slit 31 move as a whole. Among them, each transverse drive component 21 and longitudinal drive component 22 can be arranged on the bottom plate of the protection box 4, so that the transverse drive component 21 and the longitudinal drive component 22 can be supported and fixed by the protection box 4; each transverse drive component 21 and the longitudinal drive component 22 are independently controlled and can move in both directions. When the transverse drive component 21 and / or the longitudinal drive component 22 receives a signal from the detection mechanism 1, the transverse drive component 21 or the longitudinal drive component 22 moves to drive the alignment strip 3 to move horizontally left and right or longitudinally forward and backward (such as Figure 8 up and down movement as shown).

[0040] In an alternative way of connecting the longitudinal drive components in the present embodiment, the longitudinal drive components 22 may also be directly connected to the protective strips 33, for example, the two upper longitudinal drive components 22 are connected to the left and right ends of the protective strips 33 located on the upper side, and the two lower longitudinal drive components 22 are connected to the left and right ends of the protective strips 33 located on the lower side. This not only enables the overall longitudinal movement of the two groups of protective strips 33, that is, the longitudinal movement of the ray passing slots 31, but also enables the adjustment of the width of the ray passing slots 31 between the protective strips 33.

[0041] See also Fig. 9, which is a schematic diagram of the structure of the transverse drive assembly or the longitudinal drive assembly. As shown in the figure, the transverse drive assembly 21 and / or the longitudinal drive assembly 22 includes: a drive motor 231 and a push-pull rod 232; wherein, the power output end of the drive motor 231 is connected to the push-pull rod 232 through a transmission member 233, and the transmission member 233 is used to convert the rotation of the drive motor 231 into the reciprocating linear movement of the push-pull rod 232, so as to drive the alignment bar 3 to move horizontally or vertically. Specifically, the transmission member 233 can be a ball screw mechanism, the screw of the ball screw mechanism is connected to the power output end of the drive motor 231 to rotate synchronously with the power output end of the drive motor 231, and the ball of the ball screw mechanism is connected to the push-pull rod 232 to convert the rotation into reciprocating linear movement, i.e., translation, so that the push rod 232 moves forward or backward along the direction perpendicular to the rotation, i.e., the axial direction of the screw, thereby driving the alignment bar 3 to move.

[0042] In this embodiment, the detection mechanism 1 may include a plurality of photosensitive crystals arranged in an array, namely, detection units, and the detection mechanism 1 is provided with at least two rows of horizontal detection unit groups and one or more rows of vertical detection units; wherein, in this embodiment, two rows of horizontal detection unit groups and one row of vertical detection units are taken as an example.

[0043] The spacing between the two rows of transverse detection unit groups and the transverse median line of the detection mechanism 1 is equal. The two rows of transverse detection unit groups each include n detection units arranged along the transverse direction of the detection mechanism 1, and the detection units corresponding to the two rows of transverse detection unit groups can be on the same longitudinal straight line; each detection unit can obtain radiation energy in real time, and the two rows of transverse detection unit groups can obtain two sets of energy data groups in real time respectively. Each set of data in the two sets of energy data groups can be fitted with two fitting curves respectively. The fitting curve can be obtained by taking the distance from each detection unit to the longitudinal median line as the horizontal coordinate and the energy detected by the detection unit as the vertical coordinate. According to Figure 4 It can be seen that when there is no offset, the two fitting curves overlap, and the horizontal coordinate of the data point with the largest vertical coordinate in the overlapping fitting curve is located at the center position of the first detection unit and the nth detection unit, that is, the horizontal coordinate of the data point with the largest vertical coordinate in the overlapping fitting curve is equal to half of the sum of the distances of the first detection unit and the nth detection unit from the longitudinal median line. For example, when the center position between the positions of the first detection unit and the mth detection unit is on the horizontal median line, the horizontal coordinate of the data point with the largest vertical coordinate in the fitting curve is 0. The horizontal median line is the median line of the horizontal setting of the rectangular structure, and the longitudinal median line is the median line of the longitudinal setting of the rectangular structure. The distance can be expressed by positive and negative to indicate the direction on both sides.

[0044] The longitudinal detection unit includes m detection units arranged along the transverse direction of the detection mechanism 1. Each detection unit can obtain radiation energy in real time. The radiation energy obtained by each detection unit of the longitudinal detection unit group is combined to form an energy data group. The fitting curve obtained by data fitting is based on Figure 4 It can be seen that when there is no offset, the horizontal coordinate of the data point with the largest vertical coordinate in the fitting curve is located at the center position of the first detection unit and the mth detection unit. That is to say, the horizontal coordinate of the data point with the largest vertical coordinate in the fitting curve is equal to half of the sum of the distances of the first detection unit and the mth detection unit from the longitudinal median line. For example, when the center position between the positions of the first detection unit and the mth detection unit is on the longitudinal median line, the horizontal coordinate of the data point with the largest vertical coordinate in the fitting curve is 0.

[0045] Of course, in an alternative implementation of the detection mechanism 1 in this embodiment, the detection mechanism 1 may also be provided with two rows of longitudinal detection units and one row of transverse detection units, which is similar to the embodiment of two rows of transverse detection unit groups and one row of longitudinal detection units, and is not limited to it in this embodiment.

[0046] To achieve position adjustment, preferably, the detection mechanism 1 is also used to acquire the first energy data group and the second energy data group in real time, fit the data in the first energy data group to obtain a first fitting curve, fit the data in the second energy data group to obtain a second fitting curve, determine the first data point with the largest ordinate in the first fitting curve and the second data point with the largest ordinate in the second fitting curve, and when the ordinate of the first data point is different from the ordinate of the second data point, control the ray receiving mechanism to rotate based on the corresponding position of the first energy data group to twist the corresponding position of the first energy data group until the ordinate of the first data point is the same as the ordinate of the second data point, thereby completing the tilt correction.

[0047] For example, in this embodiment, two rows of horizontal detection unit groups and one row of longitudinal detection unit groups are taken as examples to illustrate that the first energy data group is a group of radiation energy data received at multiple points set along the first horizontal line, that is, a group of radiation energy data acquired in real time by one group of horizontal detection unit groups; the second energy data groups are groups of radiation energy data received at multiple points set along the second horizontal line, that is, a group of radiation energy data acquired in real time by another group of horizontal detection unit groups; the distances from the first horizontal line and the second horizontal line to the horizontal median line of the detection mechanism are equal. The data in the first energy data group is used as the A-measurement data to obtain the fa(n) signal, and the data in the second energy data group is used to obtain the fb(n); in view of the inconsistency of the signal response of the detection unit itself, the actual signal of fa(n)\fb(n) has a reasonable deviation, and the fa(n)\fb(n) signal is fitted based on the least squares standard, and the first fitting curve and the second fitting curve are obtained by fitting, and the highest signal value points AH and BH are found. If AH is not equal to BH, the motor of the sensor can be driven to drive the detection mechanism 1 to twist the position of the B-measurement with the A-measurement as the reference, and step feedback is performed in real time, so that AH\BH are finally in the same position, that is, AH is equal to BH, and the horizontal coordinates corresponding to the highest signal value points are the same, and the tilt correction is completed, so that the detection mechanism 1, that is, the sensor, is parallel to the ray passing slit 31. Among them, when the ray passes through the slit 31, some of the data detected by some detection units are 0, and the data detected by each detection unit can be screened first, and only the data greater than 0 are selected to form a ray energy data group, that is, only the data greater than 0 detected by the detection unit are fitted.

[0048] In this embodiment, the detection mechanism 1 is also used to determine the absolute value of the difference between the horizontal coordinate of the first data point and the standard horizontal coordinate of the first direction when the first data point is the same as the second data point, and when the absolute value of the difference is greater than the first threshold, control the ray receiving mechanism to move along the first direction until the absolute value of the difference between the horizontal coordinate of the first data point and the standard horizontal coordinate of the first direction is less than or equal to the preset value, thereby completing the centering adjustment in the first direction. The standard horizontal coordinate in the first direction may be half of the sum of the horizontal coordinates corresponding to the first receiving ray point and the last receiving ray point along the first direction line from one side to the other side; the first receiving ray point and the last receiving ray point may be arranged symmetrically about a second direction perpendicular to the first direction.

[0049] For example, when AH\BH are at the same position, that is, the first data point is the same as the second data point, calculate whether the corresponding horizontal coordinate of AH is at the center position of the corresponding horizontal coordinate of the first detection unit and the corresponding horizontal coordinate of the nth detection unit, that is, determine whether there is an offset in the horizontal direction, that is, the θ direction, and in this embodiment, the longitudinal midline is used as the reference, and the center position between the corresponding horizontal coordinate of the first detection unit and the corresponding horizontal coordinate of the nth detection unit is on the longitudinal midline, then the first direction standard horizontal coordinate, that is, the horizontal standard horizontal coordinate is 0; if the corresponding horizontal coordinate of AH is to the left of the center position of the corresponding horizontal coordinate of the first detection unit and the corresponding horizontal coordinate of the nth detection unit, then the overall driving detection mechanism 1 moves in the belt direction, that is, in the horizontal direction, so that AH and BH are at the center position of the corresponding horizontal coordinate of the first detection unit and the corresponding horizontal coordinate of the nth detection unit, and the automatic alignment of the θ direction detection mechanism 1 is completed, so that the automatic adjustment of the alignment strip 3 can be performed based on this.

[0050] In this embodiment, the detection mechanism 1 is also used to determine the absolute value of the difference between the energy data of the ray and the standard energy data. The energy data of the ray can be the total energy data, and the absolute value of the difference between the total energy data and the standard energy data is determined. When the absolute value of the difference between the total energy data and the standard energy data is less than or equal to the second threshold, it is determined that the position of the ray passing through the slit is not at the preset position, and a driving signal is emitted to the driving mechanism 2 so that the driving mechanism 2 drives the collimation bar 3 to move until the absolute value of the difference between the total energy data and the preset energy is less than or equal to the second threshold, and it is determined that the position of the ray passing through the slit reaches the preset position, and the emission of the driving signal is stopped, and the adjustment of the position of the collimation bar is completed, so that the collimation bar moves to the preset position, so as to allow the rays in the preset area to pass through the ray passing slit 31 and block the rays at other positions. That is to say, through the symmetry of the signals on both sides of fa(n)\fb(n), the automatic tightening adjustment of the collimation bar 3 is driven, which needs to be adjusted after the tilt adjustment and correction and lateral adjustment of the detection mechanism 1.

[0051] For example, the X-ray emitted by the X-ray source passes through the protective box 4 and the collimation bar 3 to reach the detection mechanism 1. After the automatic alignment of the detection mechanism 1 in the θ direction is completed, it is determined whether the energy of the X-ray received by the detection array of the detection mechanism 1 reaches the standard energy data, or whether the difference is less than or equal to the second threshold value. If not, a signal is sent to the driving mechanism 2, and the driving mechanism 2 first drives the collimation bar 3 left and right (relative to Figure 8 When the X-ray passing through the narrow slit of the collimating strip 3 and reaching the detection mechanism 1 is within the range of -θ to θ in the left and right direction, the driving mechanism 2 stops driving the collimating strip 3 to move left and right, and then drives the collimating strip 3 to move forward and backward (such as Figure 8The linear array moves up and down as shown in the figure until the front-to-back direction of the X-ray passing through the narrow slit of the collimating strip 3 and reaching the detection mechanism 1 is within the range of -β to β. At this time, the radiation source in the radiation emitting mechanism, the radiation passing through the slit 31 of the collimating strip 3 in the radiation protection mechanism and the sensor in the radiation receiving mechanism, i.e., the detection mechanism 1, are on the same plane, and the X-ray energy received by the linear array reaches the standard energy data, the detection mechanism 1 stops sending signals, and the driving mechanism 2 stops moving.

[0052] When moving horizontally, you can first choose to drive the collimation bar 3 to move left or right. If the energy of the X-ray received by the linear array detected by the detection mechanism 1 decreases, the movement is reversed, so that the energy of the X-ray received by the linear array detected by the detection mechanism 1 gradually increases, until the energy of the X-ray received by the linear array detected by the detection mechanism 1 begins to decrease, the maximum horizontal energy position is determined, and the movement is stopped at the maximum position, and the longitudinal movement is started; if the energy of the X-ray received by the linear array detected by the detection mechanism 1 increases, the movement is continued, so that the energy of the X-ray received by the linear array detected by the detection mechanism 1 gradually increases, until the energy of the X-ray received by the linear array detected by the detection mechanism 1 begins to decrease, the maximum horizontal energy position is determined, and the movement is stopped at the maximum horizontal energy position. At this time, the detection mechanism 1 detects whether the energy of the X-ray received by the linear array reaches the standard energy data or whether the difference is less than or equal to the second threshold value, and the adjustment of the position of the collimation bar 3 is completed, so that the collimation bar 3 moves to the preset position. The principle of longitudinal movement can refer to that of lateral movement, which will not be described in detail in this embodiment; when the standard energy data matches, the collimator bar 3 does not block the rays irradiated on the detection mechanism 1, and the energy detected by the detection mechanism 1 is the standard energy data, which matches the preset position. Of course, the position of the collimator bar 3 can also be determined based on the data detected by the first detection unit and the nth detection unit, so as to adjust the position accordingly.

[0053] In this embodiment, the detection mechanism 1 is also used to obtain a third energy data group of the received rays, fit the data in the third energy data group to obtain a third fitting curve, determine the third data point with the largest ordinate in the third fitting curve, and the absolute value of the difference between the abscissa of the third data point and the standard abscissa in the second direction. When the absolute value of the difference is greater than a third threshold, the ray receiving mechanism is controlled to move along the second direction until the absolute value of the difference between the abscissa of the third data point and the standard abscissa in the second direction is less than or equal to a preset value, and the longitudinal centering adjustment is completed to achieve centering at an angle of β. The principle can refer to the centering in the θ direction. Of course, the centering at an angle of β can also be performed before the collimation strip is adjusted. In this embodiment, the adjustment order of the two is not limited.

[0054] For example, the third energy data group is a group of ray energy data received from multiple points set along the longitudinal line, and a group of ray energy data acquired in real time by a longitudinal and transverse detection unit group, which can be set along the longitudinal median line of the detection mechanism 1. After the collimation bar 3 is adjusted, the data in the third energy data group can be used as C-measurement data to obtain the fc(n) signal, and the fc(n) signal is subjected to standard fitting based on least squares. Through fitting, a third fitting curve is obtained, and the highest signal value point CH is found to determine whether the horizontal coordinate corresponding to CH is at the center position of the horizontal coordinate corresponding to the first detection unit and the horizontal coordinate corresponding to the mth detection unit, that is, to determine whether there is an offset in the longitudinal direction, i.e., the β direction, of the detection mechanism 1. In this embodiment, the transverse median line is used as a reference, and the center position between the horizontal coordinate corresponding to the first detection unit and the horizontal coordinate corresponding to the mth detection unit is on the transverse median line, then the standard horizontal coordinate in the second direction, i.e., the longitudinal standard horizontal coordinate, is 0; if the horizontal coordinate corresponding to CH is on the upper side of the center position of the horizontal coordinate corresponding to the first detection unit and the horizontal coordinate corresponding to the mth detection unit (relative to Figure 8 For example, if β is less than 0, the overall driving detection mechanism 1 moves downward in the longitudinal direction, so that CH is at the center position of the horizontal coordinate corresponding to the first detection unit and the horizontal coordinate corresponding to the mth detection unit, completing the automatic alignment of the β direction detection mechanism 1.

[0055] In this embodiment, the radiation passing slit 31, the detection mechanism 1, and the sensor of the radiation receiving mechanism can be adapted to the radiation high energy area, so that after the radiation passing slit 31, the radiation receiving mechanism and the position of the emission source are adjusted, only the radiation in the high energy area passes through the radiation passing slit 31 and is irradiated onto the sensor of the radiation receiving mechanism, and the detection mechanism 1 senses the radiation intensity between the radiation passing slit 31 and the radiation receiving mechanism.

[0056] In summary, the ray collimation adjustment device provided in this embodiment uses the collimation bar 3 as a ray protection mechanism so that the rays emitted by the ray emitting mechanism only pass through the ray passing slit 31, and it and part of the rays passing through the collimation bar 3 are blocked; the collimation bar 3 is movably supported by the protection box 4, so that the collimation bar 3 can be moved under the drive of the driving mechanism 2 to adjust the position of the collimation bar 3, that is, adjust the position of the ray passing slit 31; the rays emitted from the ray passing slit 31 are received and sensed by the detection mechanism 1, and the position of the ray passing slit 31 is judged according to the energy data of the rays. When the position of the ray passing slit 31 is not at the preset position, a driving signal is emitted to the driving mechanism 2, so that the driving mechanism 2 drives the collimation bar 3 to move until the position of the ray passing slit 31 reaches the preset position, so as to adjust the position of the collimation bar 3, thereby making the ray source in the ray emitting mechanism, the ray passing slit 31 and the sensor in the ray receiving mechanism in the same plane.

[0057] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0058] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A ray collimation adjustment device, characterized in that: include: A detection mechanism, a collimation bar and a protective box; wherein the collimation bar is provided with a ray passing slit so that the ray emitted by the ray emitting mechanism passes through the ray passing slit; The collimating bar is movably arranged on the protective box, and the collimating bar is connected to a driving mechanism for driving the collimating bar to move; The detection mechanism is arranged below the protection box, and is used to receive and sense the rays emitted from the slits, and control the driving mechanism according to the energy data of the rays, so as to control the adjustment of the position of the collimating strips; The detection mechanism is provided with at least two rows of transverse detection unit groups, each detection unit acquires radiation energy in real time to form an energy data group, wherein the radiation energy data group acquired in real time by one row of transverse detection unit groups is the first energy data group, and the radiation energy data group acquired in real time by the other row of transverse detection unit groups is the second energy data group, and a tilt correction is performed according to the position of the highest signal value point of the first energy data group and the second energy data group, so that the detection mechanism is parallel to the radiation passing slit; wherein the detection mechanism is arranged on the radiation receiving mechanism, and is also used to fit the data in the first energy data group to obtain a first fitting curve, fit the data in the second energy data group to obtain a second fitting curve, determine the first data point with the largest ordinate in the first fitting curve and the second data point with the largest ordinate in the second fitting curve, and when the ordinate of the first data point is different from the ordinate of the second data point, control the radiation receiving mechanism to rotate based on the corresponding position of the first energy data group to twist the corresponding position of the first energy data group until the first data point is the same as the second data point, thereby completing the tilt correction.

2. The ray collimation adjustment device according to claim 1, characterized in that: The collimating strips include: a base and two groups of protection strips; wherein the two groups of protection strips are both arranged on the base, and there is a gap between the two groups of protection strips to form a ray passing slot; At least one group of the protection strips is movably connected to the base for adjusting the width of the radiation passage slots.

3. The ray collimation adjustment device according to claim 2, characterized in that: The protection strip comprises: a lead strip and two copper strips; wherein the lead strip is stacked between the two copper strips, and the lead strip is used to block radiation.

4. The ray collimation adjustment device according to any one of claims 1 to 3, characterized in that: The driving mechanism comprises: a transverse driving component and a longitudinal driving component; wherein the transverse driving component is connected to the collimating bar and is used to apply a transverse driving force to the collimating bar so that the collimating bar moves in the transverse direction; The longitudinal driving assembly is connected to the collimating bar and is used to apply a longitudinal driving force to the collimating bar so as to move the collimating bar in the longitudinal direction.

5. The ray collimation adjustment device according to claim 4, characterized in that: The transverse drive assembly and / or the longitudinal drive assembly includes: a drive motor and a push-pull rod; wherein, the power output end of the drive motor is connected to the push-pull rod through a transmission member, and the transmission member is used to convert the rotation of the drive motor into reciprocating linear movement of the push-pull rod to drive the alignment bar to move transversely or longitudinally.

6. The ray collimation adjustment device according to claim 5, characterized in that: The transmission member is a ball screw mechanism.

7. The ray collimation adjustment device according to claim 1, characterized in that: The bottom of the protection box is provided with a wide slit, the width of which is greater than the width of the ray passing slit.

8. The ray collimation adjustment device according to claim 1, characterized in that: The detection mechanism is also used to determine the position of the ray passing through the slit based on the energy data of the ray. When the position of the ray passing through the slit is not at a preset position, a driving signal is transmitted to the driving mechanism so that the driving mechanism drives the collimation bar to move until the position of the ray passing through the slit reaches the preset position.

9. The ray collimation adjustment device according to claim 8, characterized in that: The detection mechanism is also used to determine the absolute value of the difference between the energy data of the ray and the standard energy data. When the absolute value of the difference between the energy data of the ray and the standard energy data is less than or equal to a second threshold, it is determined that the position of the ray passing through the slit is not at a preset position, and a driving signal is emitted to the driving mechanism so that the driving mechanism drives the collimation bar to move until the absolute value of the difference between the energy data of the ray and the preset energy is less than or equal to the second threshold, and it is determined that the position of the ray passing through the slit reaches the preset position, and the emission of the driving signal is stopped to complete the adjustment of the position of the collimation bar.

10. The ray collimation adjustment device according to claim 1, characterized in that: The detection mechanism is used to determine the absolute value of the difference between the horizontal coordinate of the first data point and the standard horizontal coordinate in the first direction when the first data point is the same as the second data point. When the absolute value of the difference is greater than a first threshold, the detection mechanism is used to control the ray receiving mechanism to move along the first direction until the absolute value of the difference between the horizontal coordinate of the first data point and the standard horizontal coordinate in the first direction is less than or equal to a preset value, thereby completing the centering adjustment in the first direction.

11. The ray collimation adjustment device according to claim 10, characterized in that: The detection mechanism is also used to obtain a third energy data group of the received rays, fit the data in the third energy data group to obtain a third fitting curve, determine the third data point with the largest vertical coordinate in the third fitting curve, and the absolute value of the difference between the horizontal coordinate of the third data point and the standard horizontal coordinate in the second direction. When the absolute value of the difference is greater than a third threshold, the ray receiving mechanism is controlled to move along the second direction until the absolute value of the difference between the horizontal coordinate of the third data point and the standard horizontal coordinate in the second direction is less than or equal to a preset value, thereby completing the centering adjustment in the second direction.

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