Board card fixing device and board card detection device

Abstract

The utility model discloses a board card fixing device and a board card detection device, which are used for fixing a board card in a VPX case, and the board card comprises a PCB with a first surface and a second surface which are oppositely arranged. A first connector electrically connected with a bottom plate in a VPX case and a second connector electrically connected with a quantum measurement and control circuit are fixed to the two opposite first side edges of the first face of the PCB respectively, and the fixing device comprises a first pressing frame and a second pressing frame which are fixed along the peripheries of the first face and the second face of the PCB respectively; the first connector is located outside the first pressing frame, and a first groove is formed in the side, close to the second connector, of the first pressing frame and used for exposing the second connectors on various board cards; locking devices are arranged on two opposite second side edges of the first pressing frame, the locking devices and the second pressing frame are in close contact with a guide rail groove in the VPX case, and the second side edges are perpendicular to the first side edge. The fixing device ensures the stability of the board card during detection, and can be matched with various board cards.

Description

TECHNICAL FIELD

[0001] The utility model relates to quantum computer technical field especially, and it is a kind of board card fixing device and board card detection device. BACKGROUND

[0002] Quantum computing is a new computing mode that basic information units are regulated and controlled following quantum mechanics law to carry out computation.The basic information unit of classical computing is classical bit, and the basic information unit of quantum computing is quantum bit, and classical bit can only be in one state, i.e.0 or 1, while based on quantum mechanics state superposition principle, the state of quantum bit can be in the superposition state of multiple possibilities, so the computing efficiency of quantum computing is far more than the computing efficiency of classical computing.

[0003] Quantum chip is the core component for running quantum computing, and multiple quantum bits are integrated on quantum chip, in order to ensure the normal work of quantum bit, special quantum computing measurement and control system needs to be built.Quantum computing measurement and control system includes multiple board cards for providing various control signals (such as frequency control signal, quantum state control signal, measurement control signal) for quantum chip, and each board card is integrated in VPX case, and before machine, the basic function detection of electrical devices on board card needs to be carried out.

[0004] It should be noted that the information disclosed in the background section of the present application is only intended to deepen the understanding of the general background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of board card fixing device and board card detection device, the fixing device can realize the fixation of board card to facilitate the basic function detection of electrical devices on board card, ensure the stability of board card when detecting, also can match multiple board cards.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of board card fixing device for fixing board card in VPX case, the board card includes the PCB board with oppositely arranged first face and second face, and the first face of the PCB board is fixed with the first connector electrically connected with the bottom plate in VPX case and the second connector electrically connected with quantum measurement and control circuit on two opposite first side edges respectively, and the fixing device includes:

[0008] First pressing frame and second pressing frame fixed along the periphery of the first face and the second face of the PCB board respectively;

[0009] The first connector is located outside the first pressing frame, and the first pressing frame is provided with a first groove on a side close to the second connector, so as to expose the second connector on various boards.

[0010] The first pressing frame is provided with a locking device on each of two opposite second sides, and the locking device and the second pressing frame are in close contact with the guide groove in the VPX case.

[0011] The board fixing device as described above further comprises:

[0012] A third side connecting one end of the two second sides is provided with the first groove;

[0013] A fourth side connecting the other end of the two second sides is arranged close to the second connector.

[0014] The board fixing device as described above further comprises:

[0015] The board fixing device as described above further comprises:

[0016] The board fixing device as described above further comprises:

[0017] The board fixing device as described above further comprises:

[0018] The first mounting hole and the second mounting hole are used for screwing the first pressing frame, the PCB, the locking device and the second pressing frame.

[0019] The board fixing device as described above further comprises:

[0020] The board fixing device as described above further comprises:

[0021] The board fixing device as described above, further, an outer thread is arranged on an end of the positioning column away from the second pressing frame, a nut matched with the outer thread is sleeved on the outer thread, and an elastic gasket is further arranged between the nut and the first pressing frame.

[0022] The utility model discloses still one kind for a kind of board detection device, including:

[0023] The above-mentioned board fixing device is used for fixing the board;

[0024] The fixed board is inserted into the guide rail slot of the VPX case and electrically connected with the bottom plate of the VPX case;

[0025] The detection instrument is electrically connected with the electrical device to be detected on the PCB.

[0026] The utility model has the advantages that:

[0027] The first pressing frame and the second pressing frame in the application play the role of clamping and fixing the PCB and protection, by fixing the first pressing frame and the second pressing frame on the periphery of the PCB, the electrical device in the PCB is not covered, and the detection instrument can test the electrical device in the PCB before machine. By setting the locking device on the first pressing frame, the board is tightly installed in the guide rail slot in the VPX case, the board is accurately positioned in the case, displacement caused by vibration or impact is prevented, and the stability of the board during detection is ensured.

[0028] In addition, since the first connector is located outside the first pressing frame, the board can be electrically connected with the bottom plate in the VPX case, since the first pressing frame is provided with the first groove for exposing the second connector on the various boards, the board can be electrically connected with the quantum measurement and control circuit, and the fixing device can match various boards.

[0029] The board detection device provided by the utility model comprises the board fixing device, and therefore has the same advantages, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The utility model provides a structure diagram of board fixing device for embodiment of the utility model;

[0031] Figure 2 The utility model provides a structure diagram of first pressing frame for embodiment of the utility model;

[0032] Figure 3 The utility model provides a structure diagram of second pressing frame for embodiment of the utility model;

[0033] In the drawing marks: 10, PCB board;20, first connector;30, second connector;40, first pressing frame;41, second side edge;411, first mounting hole;42, third side edge;43, fourth side edge;44, first recess;45, limiting baffle;50, second pressing frame;51, fifth side edge;511, second mounting hole;52, sixth side edge;53, seventh side edge;60, locking device;70, puller. DETAILED DESCRIPTION

[0034] In order to make the person skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be interpreted as a limitation on the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0037] Figure 1 The structural schematic diagram of the board card fixing device provided by the embodiment of the present application is as follows: Figure 1The embodiment of the application discloses a board fixing device for fixing a board in a VPX case, the board comprising a PCB 10 with a first face and a second face arranged oppositely, two first side edges of the first face of the PCB 10 are respectively fixed with a first connector 20 electrically connected with an inner bottom plate of the VPX case and a second connector 30 electrically connected with a quantum measurement and control circuit, the fixing device comprising: a first pressing frame 40 and a second pressing frame 50 fixed along the periphery of the first face and the second face of the PCB 10 respectively; wherein the first connector 20 is located outside the first pressing frame 40, one side of the first pressing frame 40 close to the second connector 30 is provided with a first groove 44 for exposing the second connector 30 on various boards; the two opposite second side edges 41 of the first pressing frame 40 are respectively provided with a locking device 60, the locking device 60 and the second pressing frame 50 are in close contact with a guide rail groove in the VPX case, and the second side edges 41 are arranged perpendicularly to the first side edges.

[0038] The first pressing frame 40 and the second pressing frame 50 in the embodiment play a role in clamping and fixing the PCB and protection, by fixing the first pressing frame 40 and the second pressing frame 50 on the periphery of the PCB 10, the electrical devices in the PCB 10 are not covered, so that the electrical devices in the PCB 10 can be tested by detection equipment before being installed in the machine. The locking device 60 is arranged on the first pressing frame 40 to realize that the board is tightly installed in the guide rail groove in the VPX case, the board is accurately positioned in the case, displacement caused by vibration or impact is prevented, and the stability of the board during detection is ensured.

[0039] In addition, since the first connector 20 is located outside the first pressing frame 40, the board can be electrically connected with the inner bottom plate of the VPX case, since the first pressing frame 40 is provided with the first groove 44 for exposing the second connector 30 on various boards, the board can be electrically connected with the quantum measurement and control circuit, and meanwhile, the fixing device can match various boards.

[0040] The board card in the embodiment includes a routing board card, a frequency control board card, a quantum state control board card and a measurement control board card, wherein the functional board cards (including the frequency control board card, the quantum state control board card and the measurement control board card) realize external data interaction through the routing board card. The frequency control board card is used for providing a frequency control signal for a quantum bit; the quantum state control board card is used for providing a quantum state control signal for the quantum bit; and the measurement control board card is used for providing a measurement reading signal for the quantum bit. Although the first connectors 20 and the second connectors 30 are both arranged on the opposite two first side edges, the specific numbers of the first connectors 20 and the second connectors 30 and the positions of the first connectors 20 and the second connectors 30 on the first side edges are not completely the same. In the embodiment, since the first connectors 20 are all located outside the first pressing frame 40 and are provided with the first grooves 44 for exposing the second connectors 30 on the various board cards, the fixing device can match the various board cards, and the versatility of the fixing device is improved.

[0041] In the embodiment, when other signal connectors are arranged on the PCB board 10 in the board card, exemplarily, when a power connector is arranged on the PCB board 10, the power connector is preferentially arranged on the first side edge of the PCB board 10 where the second connector 30 is arranged, so as to facilitate electrical connection with an external power supply. At this time, the size of the first groove 44 on the first pressing frame 40 is increased to expose the power connector.

[0042] Figure 2 A structure schematic view of the first pressing frame 40 provided in the embodiment of the utility model is shown in Fig. 1. Figure 2 As shown in Fig. 1, in some embodiments of the embodiment, the first pressing frame 40 includes, in addition to the two opposite second side edges 41, a third side edge 42 connecting one end of the two second side edges 41, and the first groove 44 is arranged on the third side edge 42; and a fourth side edge 43 connecting the other end of the two second side edges 41, and the fourth side edge 43 is arranged close to the second connector 30.

[0043] The third side edge 42 and the fourth side edge 43 are arranged to enhance the structural integrity of the first pressing frame 40, and make the structure more stable and firm under the premise of fixing the board card and facilitating detection of electrical devices on the PCB board 10.

[0044] The two second side edges 41, the third side edge 42 and the fourth side edge 43 in the first pressing frame 40 in the embodiment can be integrally formed or separately formed and then fixedly connected.

[0045] In order to further improve the stability of the board card when fixed in the VPX case, the first pressing frame 40 is internally provided with a first pressing strip, and the shape of the first pressing strip is not specifically limited, which can ensure that the electrical devices on the PCB 10 are avoided. Exemplarily, the first pressing strip is a long strip, and the two ends thereof are respectively fixed at the midpoint positions of the two second side edges 41. Further, the second pressing frame 50 is provided with a second pressing strip arranged in parallel with the first pressing strip and corresponding to the upper and lower positions, which further ensures the stability of the board card when fixed.

[0046] As shown in the continuation of Figure 2 In some embodiments of the present embodiment, the width of the fourth side edge 43 is less than the width of any one of the second side edge 41 and the third side edge 42.

[0047] It is helpful to reduce the weight of the entire fixing device while not affecting the structural strength.

[0048] As shown in the continuation of Figure 2 In some embodiments of the present embodiment, the two ends of the third side edge 42 are provided with pullers 70. The design of the pullers 70 at the two ends of the third side edge 42 makes it more convenient to install and disassemble the board card, and improves the efficiency of maintenance and replacement. Further, the two ends of the third side edge 42 are each provided with a second groove for installing the puller 70.

[0049] Figure 3 A structural schematic view of the second pressing frame 50 provided in the present embodiment is shown in Figure 3 As shown in the continuation of In some embodiments of the present embodiment, the second pressing frame 50 comprises: two fifth side edges 51 arranged in parallel with the two second side edges 41 and corresponding to the upper and lower positions; a sixth side edge 52 connecting one end of the two fifth side edges 51, the sixth side edge 52 being arranged in parallel with the third side edge 42 and corresponding to the upper and lower positions; and a seventh side edge 53 connecting the other end of the two fifth side edges 51, the seventh side edge 53 being arranged in parallel with the fourth side edge 43 and corresponding to the upper and lower positions.

[0050] The fifth side edge 51, the sixth side edge 52 and the seventh side edge 53 of the second pressing frame 50 are arranged in parallel with and corresponding to the upper and lower positions of the second side edge 41, the third side edge 42 and the fourth side edge 43 of the first pressing frame 40, which provides symmetry and stability and enhances the structural strength of the entire fixing device. Meanwhile, the side edges of the second pressing frame 50 correspond to the side edges of the first pressing frame 40 accurately, which ensures the close cooperation between the first pressing frame 40 and the second pressing frame 50 and the PCB 10, and improves the installation precision and reliability of the fixing device.

[0051] As shown in the continuation of Figure 3As shown in the drawings: in some embodiments of the present embodiment, the width of the side edges (i.e., the sixth side edge 52 and the seventh side edge 53) of the second pressing frame 50 corresponding to the third side edge 42 and the fourth side edge 43 is smaller than the width of the adjacent side edge (i.e., the fifth side edge 51). In this way, the weight of the entire fixing device can be reduced without affecting the structural strength.

[0052] Continuing as Figures 1-3 As shown in the drawings: in some embodiments of the present embodiment, a plurality of first mounting holes 411 are arranged on each of the two second side edges 41; the second pressing frame 50, the PCB board 10, and the locker 60 are each provided with a plurality of second mounting holes 511 arranged one-to-one corresponding to the first mounting holes 411; the first mounting holes 411 and the second mounting holes 511 are used to screw the first pressing frame 40, the PCB board 10, the locker 60, and the second pressing frame 50.

[0053] By arranging the first mounting holes 411 and the second mounting holes 511, the first pressing frame 40, the PCB board 10, the locker 60, and the second pressing frame 50 can be quickly fixed by screws, improving the installation efficiency.

[0054] Further, the second mounting holes 511 of the second pressing frame 50 are stepped holes, which include a first through hole and a second through hole arranged coaxially, the first through hole matches the screw rod of the screw, and the second through hole matches the screw nut of the screw. When the screw is installed, the screw nut is completely placed in the stepped hole, without affecting the close contact between the second pressing frame 50 and the guide rail groove.

[0055] As Figure 1 As shown in the drawings: in some embodiments of the present embodiment, a limiting baffle 45 is arranged on the side of the second side edge 41 close to the PCB board 10, and the limiting baffle 45 is arranged perpendicularly to the second side edge 41. By arranging the limiting baffle 45 and arranging the limiting baffle 45 perpendicularly to the second side edge 41, the installation position of the locker 60 and the position of the board card installed in the VPX case are limited, so as to realize the close installation of the board card in the guide rail groove of the VPX case, and ensure the stability of the board card during detection.

[0056] In some embodiments of the present embodiment, a positioning column is arranged at the circumferential angle of the second pressing frame 50, and a matching positioning hole (not shown in the drawings) is arranged on the PCB board 10 and the second pressing frame 50.

[0057] The design of the positioning column and the positioning hole ensures the accurate alignment of the first pressing frame 40, the second pressing frame 50, and the PCB board 10, and improves the assembly accuracy.

[0058] Further, the positioning column is provided with an external thread at one end away from the second pressing frame 50, a nut matched with the external thread is sleeved on the external thread, and an elastic gasket is further arranged between the nut and the first pressing frame 40. The external thread on the positioning column, the nut and the elastic gasket provide stable connection, and the elastic gasket can absorb vibration to protect the connecting parts.

[0059] Based on the same application concept, the embodiment of the present application further provides a board card detection device, which comprises:

[0060] The board card fixing device is used for fixing the board card.

[0061] The VPX case is used for inserting and fixing the fixed board card in a guide rail slot of the VPX case and electrically connecting the fixed board card with a bottom plate of the VPX case.

[0062] The detection instrument is electrically connected with the to-be-detected electrical device on the PCB 10.

[0063] The board card detection device provided by the embodiment can conveniently and quickly detect the to-be-detected electrical device on the PCB 10, and has the same beneficial effects as the fixing device, which will not be described herein.

[0064] The detection instrument in the embodiment comprises one of a multimeter, an oscilloscope, a spectrum analyzer and a temperature measuring instrument.

[0065] In the description of the present specification, the description of the terms "some embodiments" or "examples" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0066] The above is only the preferred embodiment of the present application, and does not limit the present application in any way. Any person skilled in the art can make any form of equivalent replacement or modification of the technical scheme and technical content disclosed in the present application without departing from the scope of the technical scheme of the present application, which belongs to the content of the technical scheme of the present application and still belongs to the protection scope of the present application.

Claims

1. A board fixing device for fixing a board in a VPX chassis, the board comprising a PCB board having a first side and a second side disposed opposite to each other, wherein two opposite first sides of the first side of the PCB board are respectively fixed with a first connector electrically connected to the bottom plate of the VPX chassis and a second connector electrically connected to a quantum measurement and control circuit, characterized in that, The fixing device includes: A first pressure frame and a second pressure frame are fixed along the periphery of the first and second surfaces of the PCB board, respectively. The first connector is located outside the first pressure frame, and the first pressure frame has a first groove on the side near the second connector to expose the second connectors on various circuit boards. Locking devices are provided on the two opposite second sides of the first pressure frame. The locking devices and the second pressure frame are in close contact with the guide rail groove inside the VPX chassis. The second side is arranged perpendicular to the first side.

2. The plate fixing device according to claim 1, characterized in that, The first pressure frame further includes: A third side connects one end of the two second sides, and the third side is provided with the first groove; A fourth side connects the other end of the two second sides, and the fourth side is arranged close to the second connector.

3. The plate fixing device according to claim 2, characterized in that, The width of the fourth side is less than the width of either the second or the third side.

4. The plate fixing device according to claim 2, characterized in that, The side of the second pressing frame corresponding to the third and fourth side is smaller than the width of the adjacent side.

5. The plate fixing device according to claim 2, characterized in that, Pullers are provided at both ends of the third side.

6. The plate fixing device according to claim 1, characterized in that, Each of the two second sides is provided with a plurality of first mounting holes; the second pressure frame, the PCB board and the locking device are each provided with a plurality of second mounting holes arranged in a one-to-one correspondence with the first mounting holes; The first mounting hole and the second mounting hole are used to fix the first pressure frame, the PCB board, the locking device and the second pressure frame with screws.

7. The plate fixing device according to claim 1, characterized in that, A limiting baffle is provided on the side of the second side closest to the PCB board, and the limiting baffle is arranged perpendicular to the second side.

8. The fixing device according to claim 1, characterized in that, The second pressure frame has a positioning post at its corner, and the PCB board and the second pressure frame have matching positioning holes.

9. The fixing device according to claim 8, characterized in that, The positioning post has an external thread at the end away from the second pressure frame, and a matching nut is fitted on the external thread. An elastic washer is also provided between the nut and the first pressure frame.

10. A circuit board testing device, comprising: The board fixing device according to any one of claims 1-9 is used to fix the board; The fixed board is inserted into the guide rail groove of the VPX chassis and electrically connected to the bottom plate of the VPX chassis. The testing instrument is electrically connected to the electrical device under test on the PCB board.

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