A CT slip ring CAN communication test device

Abstract

The present invention discloses a CT slip ring CAN communication test device, comprising a lower frame and a slip ring body, wherein a rotating disk is provided on the upper middle portion of the lower frame through a support shaft, an upper bracket, a first telescopic support rod, a second telescopic support rod and a brush holder are installed on the upper side of the lower frame, a CAN circuit board is provided on the lower side of the slip ring body, a CAN test box and a host computer are provided on the outer side of the lower frame, the host computer is connected to the CAN test box through a data line, and the CAN circuit board forms a CAN test loop through a cable. The present invention fixes the slip ring body on the upper side of the rotating disk, and then clamps a power carbon brush and a signal carbon brush on the outer sides of a power loop and a signal loop on the upper part of the slip ring body respectively, drives the rotating disk to rotate by a motor, and then simulates the power carbon brush and the signal carbon brush rotating on the outer side of the slip ring body. Before the CT slip ring is assembled and tested, whether the CAN communication performance of the CT slip ring loop meets the standard can be tested, which helps CT slip ring manufacturers to improve the product qualification rate.

Description

Technical Field

[0001] The invention relates to the technical field of CT slip ring testing, in particular to a CT slip ring CAN communication testing device. Background Art

[0002] CT slip rings are a crucial component of CT systems. These circular, planar rings are used to transmit power and signals between the rotating and stationary parts of a CT gantry. Specifically, they deliver operating voltage to the gantry's rotating section and transmit control signals between the two sections. Both high operating voltage and precise control signal transmission are essential for the proper functioning of CT systems. Therefore, industrial production requires very strict operating standards for CT slip rings. With the rapid advancement of CT technology, an increasing number of new CT systems for diverse applications are being developed, necessitating a more reliable testing environment for CT slip rings. Directly testing the finished CT slip rings in a complete system environment can lead to serious accidents, waste significant time and money, and hinder production.

[0003] A CT slip ring test fixture with application number 202020961002.8 in the prior art includes a test frame, which can perform wireless signal transmission reliability test and loaded brush life test during the rotation of the CT slip ring. It is suitable for testing CT slip ring engineering prototypes. However, it is not convenient to detect and process CAN communication before the assembly test of the CT slip ring, and thus it is not convenient to determine whether the performance of the CAN communication of the CT slip ring loop meets the standards, and the detection efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a CT slip ring CAN communication test device to solve the problems in the prior art that it is inconvenient to detect and process CAN communication before the CT slip ring is assembled and tested, and thus it is inconvenient to determine whether the performance of the CT slip ring CAN communication meets the standards, and the detection efficiency is low.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a CT slip ring CAN communication test device, comprising a lower frame and a slip ring body, wherein a rotating disk is provided on the upper middle part of the lower frame through a support shaft, and the slip ring body is fixed to the upper side of the rotating disk by a fixing mechanism, and an upper bracket is installed on the upper side of the lower frame, and a first telescopic support rod and a second telescopic support rod are provided on the inner sides of the upper bracket respectively, and a power carbon brush is provided at one end of the first telescopic support rod, and a signal carbon brush is provided at one end of the second telescopic support rod, and the power carbon brush is slidably matched with the power loop on the upper part of the slip ring body, and the signal carbon brush is slidably matched with the signal loop on the upper part of the slip ring body, and a CAN circuit board is provided on the lower side of the slip ring body, and a CAN test box and a host computer are provided on the outer side of the lower frame, the host computer is connected to the CAN test box through a data cable, and the CAN circuit board forms a CAN test loop through a cable.

[0006] Furthermore, the lower end of the support shaft is connected to an electric motor through a gear set, the gear set uses a reduction gear, and the electric motor is fixedly arranged on the top of the lower frame.

[0007] Furthermore, the power carbon brush and the signal carbon brush are both electrically connected to the upper bracket, and the angle between the power carbon brush and the signal carbon brush is 180 degrees.

[0008] Furthermore, the fixing mechanism includes a limiting sliding groove provided on the upper sides of both ends of the rotating disk, a screw rod rotatably provided in the middle of the limiting sliding groove, and a fixing clamp block provided on the outer side of the screw rod through a sliding seat thread.

[0009] Furthermore, the fixing clamps are provided in multiple groups, and an adjusting nut is installed at one end of the screw.

[0010] Furthermore, one end of the first telescopic support rod and the second telescopic support rod are both slidably arranged with the upper bracket through a positioning seat, and the upper side of the positioning seat is adjusted and fixed by a locking bolt.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention fixes the slip ring body on the upper side of the rotating disk, and then clamps the power carbon brush and signal carbon brush on the outer sides of the power loop and signal loop on the upper part of the slip ring body respectively. The rotating disk is driven by a motor to rotate, thereby simulating the rotation of the power carbon brush and signal carbon brush on the outer side of the slip ring body. Before the CT slip ring is assembled and tested, the CAN communication performance of the CT slip ring channel can be tested to see if it meets the standards. This helps CT slip ring manufacturers improve the product qualification rate. In addition, the present invention can be used for simulation testing of CAN communication of CT slip ring channels during research and development, helping R&D personnel to discover and solve problems in a timely manner, thereby improving R&D efficiency and achieving high detection efficiency.

[0013] 2. The present invention also fixes the slip ring body to the upper side of the rotating disk through a fixing mechanism. The fixing mechanism includes a limiting slide groove provided on the upper side of both ends of the rotating disk, a screw rod rotating in the middle of the limiting slide groove, and a fixed clamping block provided on the outer side of the screw rod through a slide thread, so that the fixed clamping block can be moved and adjusted by rotating the adjusting screw rod, thereby facilitating the fixing of the slip ring body to the upper side of the rotating disk, and the fixing stability is high, and the disassembly and assembly are convenient and quick.

[0014] 3. The present invention provides a CAN circuit board on the lower side of the slip ring body, and a CAN test box and a host computer are provided on the outer side of the lower frame. The host computer is connected to the CAN test box via a data cable, and the CAN circuit board forms a CAN test loop through the cable. The CAN test box is an indispensable device for CAN communication testing. The CAN test box has three major interfaces: CAN_H, CAN_L, and GND, which can form a CAN communication link. Using the CAN test box to test the control signal communication between the planar slip ring and the brush holder can effectively simulate the control signal transmission and reception during the actual operation of the CT scanner.

[0015] 4. In the present invention, one end of the first telescopic support rod and the second telescopic support rod are both slidably arranged with the upper bracket through the positioning seat, and the upper side of the positioning seat is adjusted and fixed by a locking bolt, so that it is convenient to move, adjust and position the power carbon brush and the signal carbon brush, and to facilitate the detection and use of slip ring bodies of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a front view of the overall structure of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the slip ring body of the present invention;

[0019] Figure 3 It is a CAN communication test flow chart of the present invention.

[0020] In the figure: 1. Lower frame; 2. Rotating disk; 3. Slip ring body; 4. Power loop; 5. Upper bracket; 6. First telescopic support rod; 7. Power carbon brush; 8. Signal carbon brush; 9. Second telescopic support rod; 10. Signal loop; 11. Support shaft; 12. Gear set; 13. Motor; 14. Limiting slide; 15. Slide seat; 16. Adjusting nut; 17. Fixing clamp; 18. CAN test box; 19. Screw; 20. CAN circuit board; 21. Positioning seat; 22. Locking bolt; 23. Host computer. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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 making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 , Figure 2 , Figure 3 In an embodiment of the present invention, a CT slip ring CAN communication test device includes a lower frame 1 and a slip ring body 3. The slip ring body 3 adopts a flat slip ring. The slip ring slideway includes a 220V power slideway, a 380V power slideway and a control signal slideway. The three slideways cooperate with the brush holder to realize the effective transmission of the working voltage and the control signal. A rotating disk 2 is provided on the upper middle part of the lower frame 1 through a support shaft 11. The slip ring body 3 is fixed on the upper side of the rotating disk 2 by a fixing mechanism, which is convenient for rapid positioning of the slip ring body 3 under test. Position processing, an upper bracket 5 is installed on the upper side of the lower frame 1, and a first telescopic support rod 6 and a second telescopic support rod 9 are respectively provided on the inner side of the upper bracket 5. A power carbon brush 7 is provided at one end of the first telescopic support rod 6, and a signal carbon brush 8 is provided at one end of the second telescopic support rod 9. The power carbon brush 7 slides with the power loop 4 on the upper part of the slip ring body 3, and the signal carbon brush 8 slides with the signal loop 10 on the upper part of the slip ring body 3. The signal carbon brush 8 and the power carbon brush 7 form a brush holder, which corresponds to the signal loop and the power loop on the plane slip ring respectively, and can be stably carried out. For signal and power transmission of the CT slip ring, the lower end of the support shaft 11 is connected to the motor 13 through the gear set 12, and the power carbon brush 7 and the signal carbon brush 8 are respectively clamped on the outside of the power loop 4 and the signal loop 10 on the upper part of the slip ring body 3. The rotating disk 2 is driven to rotate by the motor 13, thereby simulating the rotation of the power carbon brush 7 and the signal carbon brush 8 on the outside of the slip ring body 3. Before the assembly test of the CT slip ring, the CAN communication performance of the CT slip ring can be tested to see if it meets the standard. A CAN circuit board 20 is provided on the lower side of the slip ring body 3, and a CAN test box 18 and a host computer 23 are provided on the outside of the lower frame 1. The host computer 23 is connected to the CAN test box 18 through a data cable. The CAN circuit board 20 forms a CAN test loop through a cable. The CAN test box 18 has three major interfaces, CAN_H, CAN_L and GND, which can form a CAN communication link. The CAN test box 18 is used to test the control signal communication between the planar slip ring and the brush holder, which can well simulate the control signal transmission and reception during the actual operation of the CT scanner.

[0023] Preferably, the gear set 12 adopts a reduction gear, and the motor 13 is fixedly arranged at the top of the lower frame 1, so as to facilitate the installation and fixing of the motor 13.

[0024] Preferably, the lower frame 1 is configured as a gantry, and the upper computer 23 is a computer on which CAN test software is installed, so as to facilitate better CAN testing.

[0025] Preferably, the fixing mechanism includes a limiting slide groove 14 provided on the upper side of both ends of the rotating disk 2, a screw 19 rotatably provided in the middle of the limiting slide groove 14, and a fixed clamp 17 threadedly provided on the outer side of the screw 19 through a slide seat 15, so that the fixed clamp 17 can be moved and adjusted by rotating the adjustment screw 19, thereby facilitating the fixing of the slip ring body 3 on the upper side of the rotating disk 2, and the fixing stability is high, and the disassembly and assembly are convenient and quick.

[0026] Preferably, multiple groups of fixing clamps 17 are provided, and an adjusting nut 16 is installed at one end of the screw rod 19 to facilitate rotational adjustment of the screw rod 19.

[0027] Preferably, one end of the first telescopic support rod 6 and the second telescopic support rod 9 are both slidably arranged with the upper bracket 5 through the positioning seat 21, and the upper side of the positioning seat 21 is adjusted and fixed by the locking bolt 22, so that it is convenient to move, adjust and position the power carbon brush 7 and the signal carbon brush 8, and to facilitate the detection and use of slip ring bodies 3 of different specifications.

[0028] The working principle and usage process of the present invention are as follows: the CAN test box 18 is controlled by the host computer 23 to adjust the baud rate and data type of the received and sent data. After adjustment according to the appropriate requirements for receiving and sending data, the data can realize the CAN communication loop test of the host computer 23-CAN test box 18-brush holder-slip ring body 3-CAN circuit board 20-slip ring body 3-brush holder-CAN test box 18-host computer 23. The received and sent data of the entire test process are compared and analyzed by the host computer to obtain the error test situation, and are displayed in real time by the host computer 23, which makes the entire CT slip ring CAN communication test efficient and accurate.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A CT slip ring CAN communication test device, comprising a lower frame (1) and a slip ring body (3), characterized in that: The upper middle part of the lower frame (1) is provided with a rotating disk (2) which is rotatable via a support shaft (11); the slip ring body (3) is fixed to the upper side of the rotating disk (2) via a fixing mechanism; an upper bracket (5) is installed on the upper side of the lower frame (1); a first telescopic support rod (6) and a second telescopic support rod (9) are provided on the inner side of the upper bracket (5); a power carbon brush (7) is provided at one end of the first telescopic support rod (6); a signal carbon brush (8) is provided at one end of the second telescopic support rod (9); and the power carbon brush (7) is in contact with the power on the upper part of the slip ring body (3). The loop (4) is slidably matched, and the signal carbon brush (8) is slidably matched with the signal loop (10) on the upper part of the slip ring body (3). A CAN circuit board (20) is provided on the lower side of the slip ring body (3). A CAN test box (18) and a host computer (23) are provided on the outer side of the lower frame (1). The host computer (23) is connected to the CAN test box (18) through a data line, and the CAN circuit board (20) forms a CAN test loop through a cable. The slip ring slide includes a 220V power slide, a 380V power slide and a control signal slide.

2. A CT slip ring CAN communication test device according to claim 1, characterized in that: The lower end of the support shaft (11) is connected to the motor (13) via a gear set (12), the gear set (12) uses a reduction gear, and the motor (13) is fixedly arranged at the top of the lower frame (1).

3. The CT slip ring CAN communication test device according to claim 1, characterized in that: The lower frame (1) is configured as a gantry frame, and the upper computer (23) is a computer on which CAN test software is installed.

4. The CT slip ring CAN communication test device according to claim 1, characterized in that: The power carbon brush (7) and the signal carbon brush (8) are both electrically connected to the upper bracket (5), and the angle between the power carbon brush (7) and the signal carbon brush (8) is 180 degrees.

5. The CT slip ring CAN communication test device according to claim 1, characterized in that: The fixing mechanism comprises a limiting slide groove (14) provided on the upper sides of both ends of the rotating disk (2), a screw (19) rotatably provided in the middle of the limiting slide groove (14), and a fixing clamp (17) threadedly provided on the outer side of the screw (19) through the slide seat (15).

6. The CT slip ring CAN communication test device according to claim 5, characterized in that: The fixed clamping blocks (17) are provided in multiple groups, and an adjusting nut (16) is installed at one end of the screw rod (19).

7. The CT slip ring CAN communication test device according to claim 1, characterized in that: One end of the first telescopic support rod (6) and the second telescopic support rod (9) are both slidably arranged with the upper bracket (5) via a positioning seat (21), and the upper side of the positioning seat (21) is adjusted and fixed via a locking bolt (22).

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