A CT slip ring test tool

Abstract

The invention discloses a CT slip ring test fixture, including a test frame, a ring-shaped fixed frame fixedly connected to the test frame, a rotating disk installed in the ring-shaped fixed frame, a CT slip ring installed on the rotating disk, the rotating disk driven to rotate by a motor, a plurality of brushes installed on the test frame, the brushes corresponding to the conductive rings, the brushes connected to a power supply, a bit error meter installed on the rotating disk, the conductive rings electrically connected to the bit error meter, the bit error meter including a signal sending part, the signal sending part fixedly installed in a mounting groove, the signal sending part and the signal sending antenna are communicatively connected, the test fixture includes an eye diagram instrument, the eye diagram instrument includes a signal receiving part, the signal receiving part includes a signal receiving antenna, and the distance between the signal receiving antenna and the signal sending antenna is 1mm. The invention proposes a CT slip ring test fixture, which can perform wireless signal transmission reliability test and load brush life test during the rotation of the CT slip ring, and is suitable for CT slip ring engineering prototype testing.

Description

Technical Field

[0001] The invention belongs to the technical field of CT slip ring testing equipment, and in particular relates to a CT slip ring testing tool. Background Art

[0002] CT slip rings are large disc slip rings used in the CT industry to achieve reliable transmission of power supply, control signals, CAN bus communication and other data between the rotating detector and the scanning frame.

[0003] With the continuous development of CT technology and the expansion of its application fields, the functions of CT systems are becoming more and more, the types of signals required to be transmitted are gradually increasing, and the size of the inspected objects is also getting larger and larger. This requires that the signal channels of the matching CT slip rings are increasing, and the specifications of the central scanning aperture are also getting larger and larger.

[0004] The performance test and life test of CT slip rings are mostly carried out after the product is finalized. It is difficult to test the wireless signal transmission reliability and the life of the loaded brushes of the slip rings at the engineering prototype stage of CT slip rings. Carrying out the above tests at the engineering prototype stage can improve R&D efficiency, shorten the R&D cycle, and provide guidance for the R&D direction. Therefore, it is necessary to design a test fixture suitable for the engineering prototype stage of CT slip rings. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a CT slip ring test fixture, the CT slip ring includes an insulating ring body, a signal transmitting antenna is arranged on the outer circumference of the insulating ring body, a plurality of annular grooves are arranged on the front of the insulating ring body, a conductive ring is installed in the annular groove, and a mounting groove connected to the outer circumference of the insulating ring body is arranged on the back of the insulating ring body. The test fixture includes a test frame, an annular fixing frame is fixedly connected to the test frame, a rotating disk is rotatably installed in the annular fixing frame through a slewing bearing, and the CT slip ring is detachably installed on the rotating disk through a plurality of screws, and the rotating disk is driven by a motor Rotate, a number of brushes are installed on the test frame, the brushes correspond to the conductive rings, the brushes fit the corresponding conductive rings, the brushes are connected to the power supply through wires, a bit error meter is installed on the rotating disk, the conductive rings are electrically connected to the bit error meter through wires, the bit error meter includes a signal sending part, the signal sending part is fixedly installed in the installation groove, the signal sending part is communicatively connected with the signal sending antenna through the plug-in terminal, the test tool includes an eye diagram instrument, the eye diagram instrument includes a signal receiving part fixed on the annular fixing frame, the signal receiving part includes a signal receiving antenna, and the distance between the signal receiving antenna and the signal sending antenna is 1mm.

[0006] As a preferred embodiment of the above technical solution, a bit error meter protection box is fixedly installed on the rotating disk, and the bit error meter is installed in the bit error meter protection box.

[0007] As a preferred embodiment of the above technical solution, the BER protection box is fixed on the rotating disk through a plurality of mounting frames, and the BER protection box is close to the center of the rotating disk.

[0008] As a preferred embodiment of the above technical solution, the bit error meter and the signal sending part are connected via an optical fiber jumper.

[0009] As a preferred embodiment of the above technical solution, a brush fixing insulating frame is fixedly connected to the test frame, a plurality of brush fixing metal parts are fixed on the brush fixing insulating frame, and the brushes are respectively fixed on the brush fixing metal parts.

[0010] As a preferred embodiment of the above technical solution, the signal receiving part is fixed on the annular fixing frame through a signal receiving antenna fixing frame.

[0011] As a preferred embodiment of the above technical solution, the signal receiving part is connected to the eye diagrammer via an optical fiber jumper.

[0012] As a preferred embodiment of the above technical solution, the motor drives the rotating disk to rotate via a belt, and the motor is fixed on the test frame.

[0013] The beneficial effects of the present invention are as follows: the present invention proposes a CT slip ring testing tool, which can perform wireless signal transmission reliability test and loaded brush life test during the rotation of the CT slip ring, has the advantages of simple structure, convenient operation and good test effect, and is suitable for CT slip ring engineering prototype testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the present invention from another angle;

[0016] Figure 3 It is a schematic diagram of the structure when the present invention is used;

[0017] Figure 4 It is the structural diagram of CT slip ring;

[0018] Figure 5 It is a structural diagram of the signal receiving part;

[0019] Figure 6 It is a schematic diagram of the structure of the brush fixing insulation frame;

[0020] Figure 7 It is a structural diagram of the signal sending part. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-7As shown, a CT slip ring test fixture, the CT slip ring 1 includes an insulating ring body 2, a signal transmitting antenna 3 is provided on the outer circumference of the insulating ring body 2, a plurality of annular grooves are provided on the front of the insulating ring body 2, a conductive ring 4 is installed in the annular groove, and a mounting groove 5 connected to the outer circumference of the insulating ring body 2 is provided on the back of the insulating ring body 2. The test fixture includes a test frame 6, an annular fixing frame 7 is fixedly connected to the test frame 6, a rotating disk 8 is rotatably installed in the annular fixing frame 7 through a slewing bearing, the CT slip ring 1 is detachably installed on the rotating disk 8 by a plurality of screws, and the rotating disk 8 is driven to rotate by a motor 9. A plurality of brushes 10 are installed on the test frame 6, and the brushes 10 Corresponding to the conductive ring 4, the brush 10 is attached to the corresponding conductive ring 4, the brush 10 is connected to the power supply 11 through a wire, a bit error meter 12 is installed on the rotating disk 8, the conductive ring 4 is electrically connected to the bit error meter 12 through a wire, the bit error meter 12 includes a signal sending part 13, the signal sending part 13 is fixedly installed in the installation groove 5, the signal sending part 13 is communicatively connected with the signal sending antenna 3 through the plug-in terminal 14, the test tool includes an eye diagram instrument 15, the eye diagram instrument 15 includes a signal receiving part 16 fixed on the annular fixing frame 7, the signal receiving part 16 includes a signal receiving antenna 17, and the distance between the signal receiving antenna 17 and the signal sending antenna 3 is 1 mm. The CT slip ring 1 is driven to rotate by a motor 9, a power source 11 supplies power to a conductive ring 4 through a brush 10, the conductive ring 4 is connected to a bit error meter 12 through a wire to supply power to the bit error meter 12, the bit error meter 12 sends a signal which is transmitted to a signal transmitting antenna 3 of the CT slip ring 1 through a signal transmitting part 13, an eye diagram instrument 15 receives the signal of the signal transmitting antenna 3 through a signal receiving part 16 to form an eye diagram, and the CT slip ring 1 forms a signal transmission test and a life test when rotating.

[0025] Furthermore, a bit error meter protection box 18 is fixedly mounted on the rotating disk 8, and the bit error meter 12 is installed in the bit error meter protection box 18. The bit error meter protection box 18 protects the bit error meter 12.

[0026] Furthermore, the BER protection box 18 is fixed on the rotating disk 8 through a plurality of mounting brackets 19, and the BER protection box 18 is close to the center of the rotating disk 8. The rotation stroke of the BER 12 is reduced, the centrifugal force on the BER 12 is reduced, and the internal structure of the BER 12 is not affected.

[0027] Furthermore, the bit error detector 12 and the signal sending part 13 are connected via an optical fiber jumper.

[0028] Furthermore, a brush fixing insulating frame 20 is fixedly connected to the test frame 6 , a plurality of brush fixing metal parts 21 are fixed to the brush fixing insulating frame 20 , and the brushes 10 are fixed to the brush fixing metal parts 21 , respectively.

[0029] Furthermore, the signal receiving part 16 is fixed on the annular fixing frame 7 via a signal receiving antenna fixing frame 22 .

[0030] Furthermore, the signal receiving part 16 is connected to the eye diagrammer 15 via an optical fiber jumper.

[0031] Furthermore, the motor 9 drives the rotating disk 8 to rotate via the belt 22, and the motor 9 is fixed on the test frame.

[0032] It is worth mentioning that the technical features such as the brush 10, the bit error meter 12, the eye diagram meter 15, the signal sending part 13, the signal receiving part 16 involved in the patent application of the present invention should be regarded as the prior art, and the specific structure, working principle and possible control method and spatial arrangement method of these technical features can be selected according to the conventional selection in the field, and should not be regarded as the inventive point of the patent of the present invention, and the patent of the present invention will not be further elaborated.

[0033] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A CT slip ring test tool, the CT slip ring comprises an insulating ring body, a signal transmitting antenna is arranged on the outer circumference of the insulating ring body, a plurality of annular grooves are arranged on the front of the insulating ring body, a conductive ring is installed in the annular groove, and a mounting groove connected to the outer circumference of the insulating ring body is arranged on the back of the insulating ring body, characterized in that: The test fixture includes a test frame, a ring-shaped fixing frame is fixedly connected to the test frame, a rotating disk is rotatably installed in the ring-shaped fixing frame through a slewing bearing, a CT slip ring is detachably installed on the rotating disk through a plurality of screws, the rotating disk is driven to rotate by a motor, a plurality of brushes are installed on the test frame, the brushes correspond to the conductive rings, the brushes fit the corresponding conductive rings, the brushes are connected to a power supply through wires, a bit error meter is installed on the rotating disk, the conductive ring is electrically connected to the bit error meter through wires, the bit error meter includes a signal sending part, and the signal sending part is fixedly installed in the mounting groove The signal sending part is communicatively connected with the signal sending antenna through the plug-in terminal, the test fixture includes an eye diagram instrument, the eye diagram instrument includes a signal receiving part fixed on a ring-shaped fixing frame, the signal receiving part includes a signal receiving antenna, and the distance between the signal receiving antenna and the signal sending antenna is 1 mm. A bit error meter protection box is fixedly installed on the rotating disk, and the bit error meter is installed in the bit error meter protection box. A brush fixing insulating frame is fixedly connected to the test frame, and a plurality of brush fixing metal parts are fixed on the brush fixing insulating frame, and the brushes are respectively fixed on the brush fixing metal parts.

2. The CT slip ring test fixture according to claim 1, characterized in that: The bit error meter protection box is fixed on the rotating disk through a plurality of mounting frames, and the bit error meter protection box is close to the center of the rotating disk.

3. The CT slip ring test fixture as claimed in claim 2, characterized in that: The bit error meter is connected to the signal sending part via an optical fiber jumper.

4. The CT slip ring test fixture according to claim 1, characterized in that: The signal receiving part is fixed on the annular fixing frame through a signal receiving antenna fixing frame.

5. The CT slip ring test fixture as claimed in claim 4, characterized in that: The signal receiving part is connected to the eye diagram instrument through an optical fiber jumper.

6. The CT slip ring test fixture according to claim 1, characterized in that: The motor drives the rotating disk to rotate through a belt, and the motor is fixed on the test frame.

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