High-voltage power supply assembly for photon detector, photon detector and photon CT

Abstract

The utility model relates to the technical field of CT equipment, and discloses a high-voltage power supply assembly for a photon detector, the photon detector and a photon CT. The photon detector comprises a plurality of detector modules, and the plurality of detector modules are divided into a plurality of module groups. The high-voltage power supply assembly comprises a plurality of high-voltage power supply backboards and a plurality of high-voltage power supply modules. And the plurality of high-voltage power supply backboards are in one-to-one correspondence with the plurality of module groups. The plurality of high-voltage power supply modules are electrically connected with the plurality of high-voltage power supply backboards in a one-to-one correspondence manner; and the high-voltage power supply modules are used for providing bias high voltage for the plurality of detector modules through the high-voltage power supply backboards. According to the invention, the length of the power supply wiring in the high-voltage power supply backboard is reduced, the system noise is reduced, and the imaging quality is improved.

Description

Technical Field

[0001] The present application relates to the technical field of CT equipment, for example, to a high-voltage power supply component for a photon detector, a photon detector and a photon CT. Background Art

[0002] In the rotating body of the photon CT (Computed Tomography), dozens of detector modules are arranged, and dozens of detector modules are distributed within a specified angle. Each detector module requires an external high-voltage DC power supply. The quality of the high-voltage electricity transmitted to the detector module has a direct impact on the data collected by the detector.

[0003] In the related art, the high-voltage power supply method for the detector of photon CT is: a single high-power high-voltage power supply is used to uniformly power all detector modules. Specifically, the high-voltage electrodes of each detector module are connected to the high-voltage backplane, and the wires in the high-voltage backplane connect all the pads of the same polarity together. Finally, the high-voltage backplane is connected to an external high-voltage DC power supply to realize power supply for dozens of detector modules.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the related art, since dozens of detector modules are distributed in the rotating body, the power wiring on the high-voltage backplane spans the entire detector module distribution area, and there is a problem that the power wiring in the high-voltage backplane is too long. A power wiring that is too long will cause high-frequency noise, and high-frequency noise will be introduced into other control signals, which is easy to trigger erroneous control instructions or error messages. Moreover, a power wiring that is too long in the high-voltage backplane will also cause a difference in the voltage of the high-voltage electrode of the detector module close to the high-voltage power supply end and the voltage of the high-voltage electrode of the detector module farthest from the high-voltage power supply, which affects the imaging quality.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a high-voltage power supply component for a photon detector, a photon detector, and a photon CT, which reduce the length of the power supply wiring in the high-voltage power supply backplane, reduce system noise, and improve imaging quality.

[0009] In some embodiments, a high-voltage power supply component for a photon detector is provided, wherein the photon detector includes multiple detector modules, and the multiple detector modules are divided into multiple module groups. The high-voltage power supply component includes: multiple high-voltage power supply backplanes, corresponding one-to-one to the multiple module groups; at least one high-voltage power supply module, electrically connected to the multiple high-voltage power supply backplanes, and used to provide bias high voltage for the multiple detector modules through the high-voltage power supply backplane.

[0010] Optionally, a plurality of high-voltage power supply backplanes are distributed at intervals along an arrangement direction of the plurality of detector modules.

[0011] Optionally, the high-voltage power supply backplane includes a board body and a plurality of positive contacts and negative contact groups arranged on the board body and distributed along the arrangement direction of the plurality of detector modules, the positive contacts and the negative contact groups corresponding to the detector modules one by one, wherein the negative contact is used to electrically connect to the high-voltage negative electrode corresponding to the cathode of the photoelectric conversion unit of the detector module, and the positive contact is used to electrically connect to the anode of the photoelectric conversion unit of the detector module.

[0012] Optionally, the high-voltage power supply assembly also includes a first connector and a second connector and a high-voltage adapter plate for fixing the first connector and the second connector, and a negative conductive circuit connected to the first connector and a positive conductive circuit connected to the second connector are provided on the high-voltage adapter plate; wherein, the photoelectric conversion unit of the detector module is arranged on the substrate of the detector module, and the substrate of the detector module is provided with a positive high-voltage input terminal connected to the anode of the photoelectric conversion unit and a negative high-voltage input terminal connected to the cathode of the photoelectric conversion unit, the negative conductive circuit is connected to the negative high-voltage input terminal, the positive conductive circuit is connected to the positive high-voltage input terminal, the first connector is electrically connected to the negative contact, and the second connector is electrically connected to the positive contact.

[0013] Optionally, there is one high-voltage power supply module, and connection lines between the high-voltage power supply module and a plurality of high-voltage power supply backplanes are arranged with equal length.

[0014] Optionally, there are multiple high-voltage power supply modules, which are electrically connected to multiple high-voltage power supply backplanes in a one-to-one correspondence.

[0015] Optionally, the high-voltage power supply component also includes a high-voltage power supply controller, which is communicatively connected to the multiple high-voltage power supply modules and is used to output on-off instructions and / or configure voltage amplitudes to the multiple high-voltage power supply modules.

[0016] Optionally, the high-voltage power supply controller is also used to configure current output thresholds for multiple high-voltage power supply modules, and the high-voltage power supply modules are also used to stop providing negative high voltage to the high-voltage power supply backplane when the load current value is higher than the current output threshold.

[0017] Optionally, the high-voltage power supply component also includes a central controller, which is communicatively connected to the high-voltage power supply controller and is used to output command information to the high-voltage power supply controller, wherein the command information includes outputting on / off commands to multiple high-voltage power supply modules and / or configuring voltage output parameters.

[0018] Optionally, the high-voltage power supply component also includes multiple high-voltage monitoring modules for monitoring the amplitude information of the bias voltage applied to the detector module, wherein the high-voltage monitoring module is communicatively connected to the high-voltage power supply module, and the high-voltage power supply module is used to continue or stop providing the bias high voltage according to the amplitude information monitored by the high-voltage monitoring module; or the high-voltage monitoring module is communicatively connected to the high-voltage power supply controller, and the high-voltage power supply controller is used to control the corresponding high-voltage power supply module to continue or stop providing the bias high voltage according to the amplitude information monitored by the high-voltage monitoring module.

[0019] Optionally, the high-voltage power supply component also includes multiple high-voltage monitoring modules for monitoring the amplitude information of the bias voltage applied to the detector module. The multiple high-voltage monitoring modules are communicatively connected to the central controller. The central controller is used to send instructions to the high-voltage power supply controller based on the amplitude information monitored by the high-voltage monitoring modules to control the corresponding high-voltage power supply module to continue or stop providing bias high voltage.

[0020] Optionally, the high-voltage power supply assembly also includes a data acquisition board, which is communicatively connected to the central controller and multiple high-voltage monitoring modules.

[0021] In some embodiments, a photon detector is also provided, comprising a plurality of detector modules and a high-voltage power supply assembly for the photon detector as in any of the previous embodiments, wherein the plurality of detector modules are divided into a plurality of module groups, and a plurality of high-voltage power supply backplanes of the high-voltage power supply assembly are connected one-to-one with the plurality of module groups.

[0022] In some embodiments, a photon CT is also provided, comprising the photon detector as described above.

[0023] The high-voltage power supply assembly for a photon detector, the photon detector, and the photon CT provided in the embodiments of the present disclosure can achieve the following technical effects:

[0024] In the embodiment of the present disclosure, multiple detector modules are divided into multiple module groups so as to group the multiple detector modules, thereby realizing distributed high-voltage power supply.

[0025] In the disclosed embodiment, multiple high-voltage power supply backplanes correspond to multiple module groups one by one, at least one high-voltage power supply module is electrically connected to multiple high-voltage power supply backplanes, and the high-voltage power supply module is used to provide bias high voltage for multiple detector modules through the high-voltage power supply backplane. A distributed high-voltage power supply mode in which each high-voltage power supply backplane supplies power to the detector modules in the corresponding module group reduces the length of the power supply wiring in the high-voltage power supply backplane, reduces system noise, and improves imaging quality.

[0026] In the disclosed embodiment, by providing a plurality of high-voltage power supply backplanes, the distance between the detector modules at both ends of the high-voltage power supply backplane can be reduced, thereby reducing the difference between the voltages of the high-voltage electrodes of the detector modules at both ends of the high-voltage power supply backplane, thereby reducing the mutual interference between the detector modules and improving the imaging quality.

[0027] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0029] Figure 1 is a schematic diagram of the structure of a photon CT provided by an embodiment of the present disclosure;

[0030] Figure 2 yes Figure 1 A schematic diagram of the arrangement relationship between the high-voltage power supply module, the high-voltage power supply backplane and the module group provided in the illustrated embodiment;

[0031] Figure 3 is a schematic diagram of a detector module provided by an embodiment of the present disclosure;

[0032] Figure 4 is a side view schematic diagram of a high-voltage adapter plate provided by an embodiment of the present disclosure;

[0033] Figure 5 is a structural schematic diagram of a high-voltage power supply backplane provided by an embodiment of the present disclosure;

[0034] Figure 6 This is a working flow chart of a photon detector provided in one embodiment of the present disclosure.

[0035] Reference numerals:

[0036] 100: high voltage power supply assembly; 101: high voltage power supply backplane; 1011: board body; 1012: positive contact; 1013: negative contact; 1014: first connecting wire; 1015: second connecting wire; 102: high voltage power supply module; 103: first connecting member; 104: second connecting member; 105: high voltage adapter board; 1051: negative conductive circuit; 1052: positive conductive circuit; 1053: first connector; 1054: second connector; 1055: adapter connector; 106: high voltage negative electrode;

[0037] 200: module group; 201: detector module; 2011: substrate; 2012: photoelectric conversion unit; 2013: data acquisition board;

[0038] 300: Photon CT; 301: Rotating body. DETAILED DESCRIPTION

[0039] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0040] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0041] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0042] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0043] Unless otherwise stated, the term "plurality" means two or more.

[0044] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0045] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0047] In the related technology, Cadmium-Zinc-Telluride (CdZnTe), referred to as CZT, is a wide-bandgap II-VI compound semiconductor crystal. The photon counting detector (PCD) composed of detector modules based on CZT crystals is the core component of photon CT imaging. The CZT crystal cathode of the photon counting detector needs to be connected to the high-voltage negative electrode of the high-voltage power supply device (kilovolt level) to apply negative high voltage to the photon counting detector through the crystal cathode to achieve carrier collection in the anode pixel area.

[0048] In actual applications, the detector module can also be based on other crystals, such as cadmium telluride, perovskite, etc.

[0049] Combination Figures 1 to 6 As shown, an embodiment of the present disclosure provides a high-voltage power supply assembly 100 for a photon detector. The photon detector includes a plurality of detector modules 201. The plurality of detector modules 201 are divided into a plurality of module groups 200. The high-voltage power supply assembly 100 includes a plurality of high-voltage power supply backplanes 101 and at least one high-voltage power supply module 102. The plurality of high-voltage power supply backplanes 101 correspond one-to-one to the plurality of module groups 200. At least one high-voltage power supply module 102 is electrically connected to the plurality of high-voltage power supply backplanes 101, and the high-voltage power supply module 102 is used to provide bias high voltage to the plurality of detector modules 201 through the high-voltage power supply backplane 101.

[0050] In this embodiment, multiple high-voltage power supply backplanes 101 correspond to multiple module groups 200 one by one, and at least one high-voltage power supply module 102 is electrically connected to multiple high-voltage power supply backplanes 101, so that the high-voltage power supply module 102 provides bias high voltage to multiple detector modules 201 through the high-voltage power supply backplane 101. The distributed high-voltage power supply mode in which each high-voltage power supply backplane 101 supplies power to the detector module 201 in the corresponding module group 200 reduces the power supply wiring length in the high-voltage power supply backplane 101, reduces system noise, and improves imaging quality.

[0051] In this embodiment, by providing a plurality of high-voltage power supply backplanes 101, the distance between the detector modules 201 at both ends of the high-voltage power supply backplane 101 can be reduced, thereby reducing the difference in voltage between the high-voltage electrodes of the detector modules 201 at both ends of the high-voltage power supply backplane 101, thereby improving the imaging quality.

[0052] In the related art, the power supply wiring on the high-voltage backplane spans the entire detector module distribution area to power all the detector modules, and there is a problem of too long wiring. Compared with the prior art, the present application uses a distributed high-voltage power supply method in which each high-voltage power supply backplane provides a bias high voltage for the detector module in the corresponding module group, which effectively reduces the length of the power supply wiring in the high-voltage power supply backplane, can improve the high-voltage power supply quality of the detector module, and reduce interference with other control signals in the photon CT system. Moreover, by setting a plurality of high-voltage power supply backplanes 101, the present application can reduce the distance between the detector modules 201 located at both ends of the high-voltage power supply backplane 101, thereby reducing the difference between the voltages of the high-voltage electrodes of the detector modules 201 located at both ends of the high-voltage power supply backplane 101, thereby reducing the mutual interference between the detector modules 201 and improving the imaging quality.

[0053] It should be noted that there is no limitation on the way of dividing the multiple detector modules 201 into multiple module groups 200. For example, the multiple detector modules 201 can be grouped according to the power of the detector modules 201 and the power of the high-voltage power module 102 to achieve grouped power supply.

[0054] In this embodiment, by dividing the multiple detector modules 201 into multiple module groups 200, the multiple detector modules 201 are grouped, and the power supply mode of the detector can be modularized to facilitate group management.

[0055] It should be noted that the number of detector modules 201 in each module group 200 is not limited and can be grouped as needed. For example, the number of detector modules 201 in each module group 200 can be 1, 2, 3, ... or (n-1), where n represents the total number of detector modules 201 in the photon CT 300.

[0056] Combination Figure 1 As shown, in some embodiments, a plurality of high-voltage power supply backplanes 101 are distributed at intervals along the arrangement direction of the plurality of detector modules 201 .

[0057] In this embodiment, multiple high-voltage power supply backplanes 101 are spaced apart along the arrangement direction of multiple detector modules 201, so that the high-voltage power supply backplane 101 is smoothly connected with the detector module 201 in the corresponding module group 200, and then the high-voltage power supply module 102 provides bias high voltage to the detector module 201 in the module group 200 corresponding to the high-voltage power supply backplane 101 through the high-voltage power supply backplane 101.

[0058] In this embodiment, the plurality of high-voltage power supply backplanes 101 are distributed at intervals along the arrangement direction of the plurality of detector modules 201 , which can shorten the connection path and save installation space.

[0059] Combination Figure 5 As shown, in some embodiments, the high-voltage power supply backplane 101 includes a board body 1011 and a plurality of positive contacts and negative contact groups disposed on the board body 1011 and distributed along the arrangement direction of the plurality of detector modules 201. The positive contacts and the negative contact groups correspond to the detector modules 201 one by one. Among them, the negative contact 1013 is used to electrically connect to the high-voltage negative electrode corresponding to the cathode of the photoelectric conversion unit of the detector module 201. The positive contact 1012 is used to electrically connect to the anode of the photoelectric conversion unit of the detector module 201.

[0060] In this embodiment, the high voltage power supply backplane 101 includes a board body 1011 and a plurality of positive contacts and a plurality of negative contact groups. The plurality of positive contacts and a plurality of negative contact groups are arranged on the board body 1011, and the plurality of positive contacts and a plurality of negative contact groups are distributed along the arrangement direction of the plurality of detector modules 201, and the positive contacts and a plurality of negative contact groups correspond to the detector modules 201 one by one, so that the positive contacts and a plurality of negative contact groups are smoothly connected to the corresponding detector modules 201.

[0061] In this embodiment, the negative contact 1013 is used to electrically connect to the high voltage negative electrode corresponding to the cathode of the photoelectric conversion unit of the detector module 201, so as to apply a negative high voltage to the photon detector through the cathode of the photoelectric conversion unit. The positive contact 1012 is used to electrically connect to the anode of the photoelectric conversion unit of the detector module 201, so as to realize carrier collection in the anode pixel area.

[0062] Optionally, combined Figure 5As shown, the high-voltage power supply backplane 101 further includes a first connecting wire 1014 and a second connecting wire 1015. The first connecting wire 1014 is disposed on the board body 1011. The first connecting wire 1014 is connected to a plurality of positive contacts 1012. The second connecting wire 1015 is disposed on the board body 1011. The second connecting wire 1015 is connected to a plurality of negative contacts 1013. The first connecting wire 1014 and the second connecting wire 1015 are both electrically connected to the corresponding high-voltage power supply module 102.

[0063] In this embodiment, the first connecting wire 1014 is connected to the plurality of positive contacts 1012. Specifically, all positive contacts 1012 on the same high-voltage power supply backplane 101 are connected together through the first connecting wire 1014 to realize power supply. The second connecting wire 1015 is connected to the plurality of negative contacts 1013. Specifically, all negative contacts 1013 on the same high-voltage power supply backplane 101 are connected together through the second connecting wire 1015 to realize power supply. Through the first connecting wire 1014, the second connecting wire 1015 and the plurality of positive contacts and negative contact groups, the detector modules 201 corresponding to the same high-voltage power supply backplane 101 are connected in series at high voltage, and the high-voltage power supply module 102 is used to stably supply power to the detector module 201, and carrier collection is realized in the anode pixel area of ​​the detector module 201, so as to improve the imaging quality of photon CT.

[0064] It can be understood that the material of the first connecting wire 1014 and the second connecting wire 1015 is not limited, for example, copper.

[0065] Combination Figures 1 to 4 As shown, in some embodiments, the high-voltage power supply assembly 100 further includes a first connector 103 and a second connector 104 and a high-voltage adapter plate 105 for fixing the first connector 103 and the second connector 104. The high-voltage adapter plate 105 is provided with a negative conductive circuit 1051 connected to the first connector 103 and a positive conductive circuit 1052 connected to the second connector 104. Among them, the photoelectric conversion unit 2012 of the detector module 201 is provided on the substrate 2011 of the detector module 201. The substrate 2011 of the detector module 201 is provided with a positive high-voltage input terminal connected to the anode of the photoelectric conversion unit 2012 and a negative high-voltage input terminal connected to the cathode of the photoelectric conversion unit 2012. The negative conductive circuit 1051 is connected to the negative high-voltage input terminal. The positive conductive circuit 1052 is connected to the positive high-voltage input terminal. The first connector 103 is electrically connected to the negative contact 1013. The second connector 104 is electrically connected to the positive contact 1012.

[0066] Specific, combined Figures 1 to 4As shown, the high-voltage power supply assembly 100 also includes a first connector 103 and a second connector 104, a high-voltage adapter plate 105 for fixing the first connector 103 and the second connector 104, and a high-voltage negative electrode 106. A negative conductive circuit 1051 connected to the first connector 103 and a positive conductive circuit 1052 connected to the second connector 104 are provided on the high-voltage adapter plate 105. The photoelectric conversion unit 2012 is provided on the substrate 2011 of the detector module 201. The substrate 2011 of the detector module 201 is provided with a positive high-voltage input terminal connected to the anode of the photoelectric conversion unit 2012 and a negative high-voltage input terminal connected to the cathode of the photoelectric conversion unit 2012. The high-voltage negative electrode 106 is electrically connected to the negative electrode of the photoelectric conversion unit 2012, and is connected to the substrate 2011 through the adapter connector 1055 to be connected to the negative high-voltage input terminal. The negative conductive circuit 1051 is connected to the negative high voltage input terminal on the substrate 2011 of the detector module 201 through the first connector 1053. The positive conductive circuit 1052 is connected to the positive high voltage input terminal of the substrate 2011 of the detector module 201 through the second connector 1054. In other embodiments, the negative conductive circuit 1051 is directly connected to the high voltage negative electrode 106 through the first connector 1053 without the aid of the substrate 2011. The first connector 1053, the second connector 1054 and the transfer connector 1055 can be FPC.

[0067] It is understood that the specific type of the first connection member 103 is not limited, such as a wire or a spring connector, etc. The specific type of the second connection member 104 is not limited, such as a wire or a spring connector, etc.

[0068] Combination Figure 3 and Figure 4 As shown, optionally, in the case that both the first connector 103 and the second connector 104 are spring connectors, the first connector 103 and the second connector 104 are spaced apart and arranged on the same side of the detector module 201 .

[0069] In this embodiment, combined with Figures 3 to 5 As shown, the first connector 103 and the second connector 104 are both spring connectors, and the first connector 103 and the second connector 104 are spaced apart and arranged on the same side of the detector module 201, so that the high-voltage power supply module 102 can provide the detector module 201 with bias high voltage through the first connector 103 and the second connector 104. It can also reduce the space occupied by the photon detector, reduce costs, and facilitate installation and maintenance. In a narrow installation space, it can not only meet the safety distance between the first connector 103 and the second connector 104, reduce electromagnetic interference, improve safety, but also reduce the width of the high-voltage power supply backplane 101 as much as possible.

[0070] Exemplarily, the first connector 103 and the second connector 104 are both single-pin spring connectors (Pogo pins), so that the detector module 201 and the high-voltage power supply backplane 101 are crimped and connected via the first connector 103 and the second connector 104 .

[0071] In this example, the reliability of the connection between the detector module 201 and the high-voltage power supply backplane 101 is improved by using the spring compression stroke of the single-pin spring connector.

[0072] It is understandable that the connection method between the detector module 201 and the spring connector is not limited, as long as the high voltage power supply module 102 can smoothly supply power to the detector module 201. For example, the detector module 201 and the spring connector are connected by welding.

[0073] Combination Figure 3 and Figure 4 As shown, illustratively, there are two first connecting members 103 , which are symmetrically arranged on both sides of the detector module 201 . There are two second connecting members 104 , which are symmetrically arranged on both sides of the detector module 201 .

[0074] In this example, the reliability of the connection between the detector module 201 and the high-voltage power supply backplane 101 is improved by two first connectors 103 and two second connectors 104, thereby achieving stable power supply.

[0075] In this example, combined Figure 4 and Figure 5 As shown, the two first connecting members 103 are symmetrically arranged on both sides of the detector module 201, and the two second connecting members 104 are symmetrically arranged on both sides of the detector module 201, so as to reduce the width of the high-voltage power supply backplane 101 as much as possible while meeting the safety distance between the first connecting members 103 and the second connecting members 104, thereby saving installation space.

[0076] In some embodiments, there is one high-voltage power supply module 102. The connection lines of the high-voltage power supply module 102 and the multiple high-voltage power supply backplanes 101 are set to be equal in length. The connection lines of the high-voltage power supply module 102 and the multiple high-voltage power supply backplanes 101 are set to be equal in length to ensure the consistency of the power supply distance, reduce the voltage difference between different high-voltage power supply backplanes 101, and ensure the working consistency of the multiple detector modules 201.

[0077] Combination Figure 1As shown, in some embodiments, there are multiple high-voltage power modules 102, and the multiple high-voltage power modules 102 are connected one-to-one with the multiple high-voltage power backplanes 101. Each high-voltage power module 102 corresponds to a high-voltage power backplane 101, which can reduce the power requirement of the high-voltage power module 102, and can realize independent control of the module group, reducing the interference of different module components.

[0078] In some embodiments, in combination Figure 6 As shown, the high-voltage power supply assembly 100 further includes a high-voltage power supply controller which is in communication connection with the plurality of high-voltage power supply modules 102 and is used to output on / off instructions to the plurality of high-voltage power supply modules 102 .

[0079] In this embodiment, the high-voltage power supply controller is communicatively connected with multiple high-voltage power supply modules 102, so that the high-voltage power supply controller can output on-off instructions to the multiple high-voltage power supply modules 102, so that the high-voltage power supply modules 102 can operate according to the on-off instructions to supply power to the high-voltage power supply backplane 101 or stop supplying power to the high-voltage power supply backplane 101.

[0080] In some embodiments, in combination Figure 6 As shown, the high-voltage power supply assembly 100 further includes a high-voltage power supply controller which is in communication with the plurality of high-voltage power supply modules 102 and is used to configure voltage amplitudes for the plurality of high-voltage power supply modules 102 .

[0081] In this embodiment, the high-voltage power supply controller is communicatively connected with multiple high-voltage power supply modules 102, so that the high-voltage power supply controller can configure voltage amplitudes for the multiple high-voltage power supply modules 102, so that the high-voltage power supply modules 102 can supply power to the high-voltage power supply backplane 101 according to the voltage amplitude configured by the high-voltage power supply controller.

[0082] In some embodiments, in combination Figure 6 As shown, the high-voltage power supply assembly 100 further includes a high-voltage power supply controller which is in communication with the plurality of high-voltage power supply modules 102 and is used to output on / off instructions and configure voltage amplitudes to the plurality of high-voltage power supply modules 102 .

[0083] In this embodiment, the high-voltage power supply controller can output on-off instructions to multiple high-voltage power supply modules 102, and can also configure voltage amplitudes for multiple high-voltage power supply modules 102. The high-voltage power supply module 102 can not only supply power to the high-voltage power supply backplane 101 or stop supplying power to the high-voltage power supply backplane 101 according to the on-off instructions, but can also supply power to the high-voltage power supply backplane 101 according to the voltage amplitude configured by the high-voltage power supply controller, so as to improve the safety of equipment use.

[0084] In some embodiments, the high voltage power controller is further configured to configure current output thresholds for the multiple high voltage power modules 102. The high voltage power module 102 is further configured to stop providing negative high voltage to the high voltage power backplane 101 when the load current value is higher than the current output threshold.

[0085] In this embodiment, the high-voltage power supply controller is also used to configure a current output threshold for multiple high-voltage power supply modules 102, so that when the load current value is higher than the current output threshold, the high-voltage power supply module 102 stops providing negative high voltage to the high-voltage power supply backplane 101, thereby improving safety of use.

[0086] In some embodiments, in combination Figure 6 As shown, the high-voltage power supply assembly 100 further includes a central controller. The central controller is in communication with the high-voltage power supply controller, and the central controller is used to output instruction information to the high-voltage power supply controller. The instruction information includes outputting on-off instructions to the multiple high-voltage power supply modules 102.

[0087] In this embodiment, the central controller is connected to the high-voltage power supply controller in communication, and the central controller can output instruction information to the high-voltage power supply controller. When the instruction information is to output an on-off instruction to multiple high-voltage power supply modules 102, the high-voltage power supply controller executes the instruction and outputs an on-off instruction to multiple high-voltage power supply modules 102, and the high-voltage power supply modules 102 operate to supply power to the high-voltage power supply backplane 101 or stop supplying power to the high-voltage power supply backplane 101 according to the on-off instruction.

[0088] In some embodiments, in combination Figure 6 As shown, the high-voltage power supply assembly 100 also includes a central controller. The central controller is in communication with the high-voltage power supply controller, and the central controller is used to output instruction information to the high-voltage power supply controller. The instruction information includes outputting configuration voltage output parameters to the multiple high-voltage power supply modules 102.

[0089] In this embodiment, the central controller is connected to the high-voltage power supply controller in communication, and the central controller can output instruction information to the high-voltage power supply controller. When the instruction information is to output configuration voltage output parameters to multiple high-voltage power supply modules 102, the high-voltage power supply controller executes the instruction and configures the voltage output parameters (for example, voltage amplitude) to the multiple high-voltage power supply modules 102, so that the high-voltage power supply modules 102 can supply power to the high-voltage power supply backplane 101 according to the voltage output parameters configured by the high-voltage power supply controller.

[0090] In some embodiments, in combination Figure 6 As shown, the high-voltage power supply assembly 100 also includes a central controller. The central controller is in communication with the high-voltage power supply controller, and the central controller is used to output instruction information to the high-voltage power supply controller. The instruction information includes outputting on-off instructions to multiple high-voltage power supply modules 102 and configuring voltage output parameters.

[0091] In this embodiment, the central controller can not only output instruction information for outputting on-off instructions to multiple high-voltage power supply modules 102 to the high-voltage power supply controller, but also output instruction information for configuring voltage output parameters to the high-voltage power supply controller, so as to control the power supply of the high-voltage power supply module 102 and ensure the safety of equipment and personnel.

[0092] In some embodiments, the high-voltage power supply assembly 100 further includes a plurality of high-voltage monitoring modules, which are used to monitor the amplitude information of the bias voltage applied to the detector module 201. The high-voltage monitoring module is in communication connection with the high-voltage power supply module 102, and the high-voltage power supply module 102 is used to continue or stop providing the bias high voltage according to the amplitude information monitored by the high-voltage monitoring module.

[0093] In this embodiment, a plurality of high-voltage monitoring modules correspond to a plurality of detector modules 201 one by one, so that the amplitude information of the bias voltage applied to the detector module 201 is monitored by the high-voltage monitoring module. The high-voltage monitoring module is connected in communication with the high-voltage power supply module 102 to send the amplitude information of the monitored bias voltage to the high-voltage power supply module 102. The high-voltage power supply module 102 continues or stops providing the bias high voltage according to the amplitude information monitored by the high-voltage monitoring module, thereby realizing rapid determination of the detector module 201 that has failed, and improving monitoring efficiency and accuracy.

[0094] Exemplarily, when the amplitude information of the bias voltage satisfies the voltage threshold range, the high-voltage power supply module 102 continues to provide the bias high voltage. When the amplitude information of the bias voltage is greater than the upper limit of the voltage threshold range, or less than the lower limit of the voltage threshold range, the high-voltage power supply module 102 stops providing the bias high voltage, i.e., it is determined that the detector module 201 fails.

[0095] Compared with the method of monitoring the high voltage state of a high voltage power supply from the high voltage power supply end in the prior art, the present application monitors the amplitude information of the bias voltage applied to the detector module through a high voltage monitoring module, thereby realizing monitoring of the high voltage state from the load end and improving monitoring efficiency and accuracy.

[0096] In some embodiments, the high-voltage power supply assembly 100 further includes a plurality of high-voltage monitoring modules, which are used to monitor the amplitude information of the bias voltage applied to the detector module 201. The high-voltage monitoring module is in communication connection with the high-voltage power supply controller, which is used to control the corresponding high-voltage power supply module 102 to continue or stop providing the bias high voltage according to the amplitude information monitored by the high-voltage monitoring module.

[0097] In this embodiment, the high voltage monitoring module is connected to the high voltage power supply controller in communication to send the amplitude information of the monitored bias voltage to the high voltage power supply controller, so that the high voltage power supply controller can control the corresponding high voltage power supply module 102 to continue or stop providing the bias high voltage according to the amplitude information monitored by the high voltage monitoring module, so as to quickly determine the detector module 201 that has failed, thereby improving the monitoring efficiency and accuracy.

[0098] Exemplarily, when the amplitude information of the bias voltage satisfies the voltage threshold range, the high-voltage power supply controller sends an instruction to the high-voltage power supply module 102 to continue to provide the bias high voltage, so that the high-voltage power supply module 102 continues to provide the bias high voltage. When the amplitude information of the bias voltage is greater than the upper limit of the voltage threshold range, or less than the lower limit of the voltage threshold range, the high-voltage power supply controller sends an instruction to the high-voltage power supply module 102 to stop providing the bias high voltage, so that the high-voltage power supply module 102 stops providing the bias high voltage, that is, it is determined that the detector module 201 fails.

[0099] In some embodiments, in combination Figure 5 As shown, the high-voltage power supply assembly 100 also includes a plurality of high-voltage monitoring modules, which are used to monitor the amplitude information of the bias voltage applied to the detector module 201. The plurality of high-voltage monitoring modules are communicatively connected to the central controller. The central controller is used to send instructions to the high-voltage power supply controller according to the amplitude information monitored by the high-voltage monitoring module, so as to control the corresponding high-voltage power supply module 102 to continue or stop providing the bias high voltage.

[0100] In this embodiment, the high voltage monitoring module is connected to the central controller in communication to send the amplitude information of the monitored bias voltage to the central controller. The central controller sends instructions to the high voltage power supply controller according to the amplitude information monitored by the high voltage monitoring module to control the corresponding high voltage power supply module 102 to continue or stop providing the bias high voltage, so as to quickly determine the faulty detector module 201 and improve the monitoring efficiency and accuracy.

[0101] Exemplarily, when the amplitude information of the bias voltage satisfies the voltage threshold range, the central controller sends an instruction to the high-voltage power supply controller to continue to provide the bias high voltage, so that the high-voltage power supply controller sends an instruction to the high-voltage power supply module 102 to continue to provide the bias high voltage, and the high-voltage power supply module 102 continues to provide the bias high voltage. When the amplitude information of the bias voltage is greater than the upper limit of the voltage threshold range, or less than the lower limit of the voltage threshold range, the central controller sends an instruction to the high-voltage power supply controller to stop providing the bias high voltage, so that the high-voltage power supply controller sends an instruction to the high-voltage power supply module 102 to stop providing the bias high voltage, and the high-voltage power supply module 102 stops providing the bias high voltage, that is, it is determined that the detector module 201 has a fault.

[0102] In some embodiments, in combination Figure 3 As shown, the detector module 201 also includes a data acquisition board 2013. Figure 5 As shown, the data acquisition board 2013 is connected to the central controller and multiple high-voltage monitoring modules. The data acquisition board 2013 is connected to the substrate 2011 of the detector module 201 to connect to the anode of the photoelectric conversion unit 2012. The connection between the data acquisition board 2013 and the substrate 2011 can be through a connector. The connector is a flexible printed circuit (FPC).

[0103] In this embodiment, the data acquisition board 2013 is in communication connection with the central controller and multiple high-voltage monitoring modules, so that the high-voltage monitoring module can send the amplitude information of the monitored bias voltage to the central controller through the data acquisition board 2013. The central controller can also send monitoring instructions to the high-voltage monitoring module or configure operating parameters to the controller module through the data acquisition board 2013.

[0104] It should be noted that the specific location of the data acquisition board 2013 is not limited.

[0105] Combination Figures 1 to 6 As shown, the embodiment of the present disclosure also provides a photon detector. The photon detector includes a plurality of detector modules 201 and a high-voltage power supply assembly 100 for the photon detector as in any of the previous embodiments. The plurality of detector modules 201 are divided into a plurality of module groups 200. The plurality of high-voltage power supply backplanes 101 of the high-voltage power supply assembly 100 are connected to the plurality of module groups 200 in a one-to-one correspondence.

[0106] In this embodiment, multiple high-voltage power supply backplanes 101 of the high-voltage power supply component 100 are connected one-to-one with multiple module groups 200, so that each high-voltage power supply backplane 101 provides bias high voltage for the corresponding detector module 201, thereby reducing the power supply line length in the high-voltage power supply backplane 101, reducing system noise, and improving imaging quality.

[0107] Combination Figures 1 to 6 As shown, the embodiment of the present disclosure further provides a photon CT 300. The photon CT 300 includes the photon detector as described above.

[0108] In this embodiment, the photon CT 300 includes the photon detector as described above, which can reduce the length of the power supply wiring in the high-voltage power supply backplane 101, reduce system noise, and improve imaging quality.

[0109] Optionally, combined Figure 1 As shown, the photon CT 300 further includes a rotating body 301 . The rotating body 301 has an installation cavity. The high voltage power supply assembly 100 is disposed in the installation cavity of the rotating body 301 .

[0110] Combination Figure 1 As shown, optionally, the high-voltage power supply back plate 101 is concave toward one side, and the concave side of the high-voltage power supply back plate 101 faces the rotation axis of the rotating body 301 .

[0111] In this embodiment, the concave side of the high-voltage power supply back plate 101 faces the rotation axis of the rotating body 301, that is, a plurality of high-voltage power supply back plates 101 are arranged at intervals to form an overall arc-shaped structure, and a plurality of detector modules 201 are distributed in an arc shape, so that the photon CT 300 can run smoothly.

[0112] Exemplary, combined Figure 1 and Figure 6 As shown, the detector module 201, the high-voltage power supply module 102 and the high-voltage power supply backplane 101 are all fixed to the rotating body 301. When the photon CT300 system is working, the central controller sends an output start instruction to the high-voltage power supply controller. The high-voltage power supply controller sends a start instruction to multiple high-voltage power supply modules 102. The high-voltage power supply module 102 is turned on and provides bias high voltage to the detector module 201 through the high-voltage power supply backplane 101. After providing the bias high voltage, the high-voltage monitoring module monitors the amplitude information of the bias voltage applied to the detector module 201, and sends it to the central controller through the data acquisition board 2013. The central controller sends an instruction to the high-voltage power supply controller according to the amplitude information monitored by the high-voltage monitoring module to control the corresponding high-voltage power supply module 102 to continue or stop providing the bias high voltage, and in this way, the safety of providing the bias high voltage to the detector module 201 is improved, and the detector module 201 with a fault can be quickly determined, thereby improving work efficiency.

[0113] In this embodiment, the controller includes a chip with logic operation capability and a circuit corresponding to the chip, and the control center includes one or more signal input terminals, and one or more signal output terminals. For example, the control center is a single-chip microcomputer system, which includes a single-chip microcomputer chip of a certain model and a power supply circuit, a crystal oscillator circuit, etc. corresponding to the single-chip microcomputer chip of the model, and the single-chip microcomputer system includes an input terminal / output terminal directly connected to the pin of the single-chip microcomputer chip, and an input terminal / output terminal indirectly connected to the pin of the single-chip microcomputer through a signal adapter (such as a relay); or the control center is a programmable logic controller (PLC) system, and the PLC system includes a central processing unit (CPU) module, an analog input module, an analog output module, a digital input module, and a digital output module.

[0114] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A high voltage power supply assembly for a photon detector, the photon detector comprising a plurality of detector modules, characterized in that: Multiple detector modules are divided into multiple module groups, and the high-voltage power supply components include: Multiple high-voltage power supply backplanes, corresponding one to one with multiple module groups; At least one high-voltage power supply module is electrically connected to the plurality of high-voltage power supply backplanes and is used to provide bias high voltage to the plurality of detector modules through the high-voltage power supply backplanes.

2. The high voltage power supply assembly according to claim 1, characterized in that: A plurality of high-voltage power supply backplanes are distributed at intervals along the arrangement direction of the plurality of detector modules.

3. The high voltage power supply assembly according to claim 1, characterized in that: The high-voltage power supply backplane includes a board body and a plurality of positive contacts and negative contact groups arranged on the board body and distributed along the arrangement direction of the plurality of detector modules. The positive contacts and the negative contact groups correspond to the detector modules one by one, wherein the negative contact is used to electrically connect to the high-voltage negative electrode corresponding to the cathode of the photoelectric conversion unit of the detector module, and the positive contact is used to electrically connect to the anode of the photoelectric conversion unit of the detector module.

4. The high voltage power supply assembly according to claim 3, characterized in that: Also includes: a first connecting member; a second connecting member; A high-voltage adapter plate for fixing the first connector and the second connector, wherein the high-voltage adapter plate is provided with a negative conductive circuit connected to the first connector and a positive conductive circuit connected to the second connector; Among them, the photoelectric conversion unit of the detector module is arranged on the substrate of the detector module, and the substrate of the detector module is provided with a positive high-voltage input terminal connected to the anode of the photoelectric conversion unit and a negative high-voltage input terminal connected to the cathode of the photoelectric conversion unit, the negative conductive circuit is connected to the negative high-voltage input terminal, the positive conductive circuit is connected to the positive high-voltage input terminal, the first connecting member is electrically connected to the negative contact, and the second connecting member is electrically connected to the positive contact.

5. The high voltage power supply assembly according to any one of claims 1 to 4, characterized in that: There is one high-voltage power supply module, and connection lines between the high-voltage power supply module and a plurality of high-voltage power supply backplanes are arranged with equal lengths.

6. The high voltage power supply assembly according to any one of claims 1 to 4, characterized in that: There are multiple high-voltage power supply modules, which are electrically connected to multiple high-voltage power supply backplanes in a one-to-one correspondence.

7. The high voltage power supply assembly according to claim 6, characterized in that: Also includes: The high-voltage power supply controller is communicatively connected with the multiple high-voltage power supply modules and is used to output on-off instructions and / or configure voltage amplitudes to the multiple high-voltage power supply modules.

8. The high voltage power supply assembly according to claim 7, characterized in that: The high-voltage power supply controller is also used to configure current output thresholds for multiple high-voltage power supply modules, and the high-voltage power supply modules are also used to stop providing negative high voltage to the high-voltage power supply backplane when the load current value is higher than the current output threshold.

9. The high voltage power supply assembly according to claim 7, characterized in that: Also includes: The central controller is connected to the high-voltage power supply controller for outputting instruction information to the high-voltage power supply controller, wherein the instruction information includes outputting on / off instructions to multiple high-voltage power supply modules and / or configuring voltage output parameters.

10. The high voltage power supply assembly according to claim 7, characterized in that: Also includes: A plurality of high voltage monitoring modules, used for monitoring the amplitude information of the bias voltage applied to the detector module; Among them, the high-voltage monitoring module is communicatively connected with the high-voltage power supply module, and the high-voltage power supply module is used to continue or stop providing bias high voltage according to the amplitude information monitored by the high-voltage monitoring module; or the high-voltage monitoring module is communicatively connected with the high-voltage power supply controller, and the high-voltage power supply controller is used to control the corresponding high-voltage power supply module to continue or stop providing bias high voltage according to the amplitude information monitored by the high-voltage monitoring module.

11. The high voltage power supply assembly according to claim 9, characterized in that: Also includes: Multiple high-voltage monitoring modules are used to monitor the amplitude information of the bias voltage applied to the detector module. The multiple high-voltage monitoring modules are communicated with the central controller. The central controller is used to send instructions to the high-voltage power supply controller based on the amplitude information monitored by the high-voltage monitoring modules to control the corresponding high-voltage power supply module to continue or stop providing bias high voltage.

12. The high voltage power supply assembly according to claim 11, characterized in that: The detector module also includes: The data acquisition board is communicatively connected with the central controller and multiple high-voltage monitoring modules.

13. A photon detector, characterized in that: It comprises a plurality of detector modules and a high-voltage power supply assembly for a photon detector as described in any one of claims 1 to 12, wherein the plurality of detector modules are divided into a plurality of module groups, and a plurality of high-voltage power supply backplanes of the high-voltage power supply assembly are connected one-to-one with the plurality of module groups.

14. A photon CT, characterized in that: Comprising the photon detector of claim 13.

Images