A high-frequency multi-channel current testing device

Abstract

This utility model relates to the technical field of current testing devices and discloses a high-frequency multi-channel current testing device, including a housing. The inner wall of the housing is equipped with a slide rail that is slidably connected to a workbench. A stepper motor on the top fixed frame of the workbench drives a bidirectional lead screw to move a test board and a second test board relative to each other. Both test boards have 24 test connection ports on their tops. A rack at the bottom of the workbench meshes with a gear inside the housing and is driven to move back and forth by a second stepper motor. The workbench is also equipped with a display screen and control buttons. A buffer pad is provided at the bottom of the housing. This device achieves high-frequency multi-channel synchronous current testing through a dual-test board and multi-connection port design. Compared with the traditional single-channel or a few-channel sequential measurement method, it significantly improves testing efficiency. The slide rail and lead screw allow the components to be stored in the housing, effectively reducing the space occupied compared with the traditional stacked structure and enhancing the ease of operation. This device has a compact structure, high testing efficiency, and is suitable for high-frequency multi-channel current testing in various scenarios.

Description

Technical Field

[0001] This utility model relates to the technical field of current testing devices, specifically a high-frequency multi-channel current testing device. Background Technology

[0002] With the rapid development of electronic technology, high-frequency multi-channel current testing is increasingly widely used in power electronic equipment, communication systems, and new energy fields. High-frequency multi-channel current testing refers to the technology of simultaneously measuring and analyzing parameters such as current quantity, waveform, and phase of multiple current channels under high-frequency signal conditions. In the electronic control systems of new energy vehicles, it is necessary to monitor the high-frequency current of multiple motor windings in real time to ensure the efficient operation and safety of the power system. In the power modules of communication base stations, accurate testing of multiple high-frequency currents is also required to ensure the stability of power supply. Accurate high-frequency multi-channel current testing not only provides crucial data for equipment performance evaluation but also enables rapid problem location in fault diagnosis, which is of great significance for improving product quality and optimizing system performance.

[0003] Traditional current testing techniques have many limitations when dealing with high-frequency, multi-channel current testing. On the one hand, traditional testing equipment often uses single-channel or a small number of channels to measure sequentially, which is difficult to meet the needs of simultaneous multi-channel testing, resulting in low testing efficiency and making it unsuitable for large-scale production and rapid testing scenarios. On the other hand, traditional testing devices are usually bulky, complex to operate, and lack flexibility and convenience, failing to meet the diverse testing needs in different scenarios. These shortcomings greatly limit the development and technological progress of related industries. To address these issues, we propose a high-frequency, multi-channel current testing device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a high-frequency multi-channel current testing device, which solves the above-mentioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a high-frequency multi-channel current testing device, comprising a housing; The inner walls of the box are fixedly connected to slide rails on both sides, and a worktable is slidably connected to the inner wall of the opposite side of the slide rails. A fixed frame is fixedly connected to the top of the inner wall of the workbench, and a stepper motor is fixedly connected to the outer wall of one side of the fixed frame; The stepper motor rotating shaft extends to one side of the inner wall of the fixed frame, and the stepper motor rotating shaft is fixedly connected to a bidirectional lead screw; The connecting shaft on the side of the bidirectional lead screw away from the stepper motor is movably connected to one side of the inner wall of the fixed frame; The fixing frame is fixedly connected to two parallel limiting slide rods on both sides near the inner wall of the bidirectional lead screw; A movable block is threaded to the outer wall of one end of the bidirectional lead screw, and a second movable block is threaded to the outer wall of the end of the bidirectional lead screw away from the movable block. The inner walls of both ends of the movable block and the second movable block are movably sleeved on one end of the outer wall of the limiting slide rod.

[0006] Preferably, a test plate is fixedly connected to the bottom of the movable block, and a second test plate is fixedly connected to the bottom of the second movable block; The top of the test board and the second test board are provided with 24 test connection ports that are equidistantly distributed in a rectangular shape.

[0007] Preferably, the outer wall of the workbench has extension openings on both sides, and one side of the outer wall of the test plate and the second test plate extends to one end of the outer wall of the extension opening.

[0008] Preferably, a rack is fixedly connected to the bottom of the workbench, and a fixing seat is fixedly connected to the bottom of the inner wall of the box. A second stepper motor is fixedly installed on the top of the fixed base, and a gear is fixedly connected to one side of the rotating shaft of the second stepper motor.

[0009] Preferably, the gear and rack are meshing.

[0010] Preferably, a display screen is provided on the outer wall of one end of the workbench; The workbench has multiple sets of control buttons arranged in a rectangular, equidistant pattern on the outer wall near the display screen.

[0011] Preferably, the bottom of the box is provided with four buffer pads that are equidistantly distributed in a rectangular shape.

[0012] Compared with the prior art, this utility model provides a high-frequency multi-channel current testing device, which has the following beneficial effects: 1. This high-frequency, multi-channel current testing device, compared to traditional current testing equipment which often uses single-channel or a small number of channels for sequential measurement, requires significant time for individual testing when dealing with multi-channel testing needs such as multiple motor windings in new energy vehicle electronic control systems or multiple current channels in communication base station power modules. This is insufficient for large-scale production and rapid testing scenarios. This high-frequency, multi-channel current testing device features 24 rectangularly spaced test connection ports on the top of the test board and the second test board, enabling simultaneous connection to multiple current channels and achieving synchronous testing of high-frequency, multi-channel current. For example, in testing new energy vehicle motor windings, traditional equipment might take several hours to complete the entire winding test. Using this device, all channel data can be acquired simultaneously in a short time, increasing testing efficiency by several times or even tens of times. This effectively meets the timeliness requirements of production and testing, helping companies improve production efficiency and reduce time costs.

[0013] 2. Compared to traditional current testing devices, which are typically bulky, complex, and require specialized training for operation, and are difficult to adjust flexibly in different scenarios, this high-frequency multi-channel current testing device improves upon these limitations through a rational structural design. The rack and pinion at the bottom of the worktable meshes with the gear driven by the second stepper motor, enabling the worktable to move back and forth within the housing. The stepper motor drives a bidirectional lead screw, allowing the test board and the second test board to move closer or further apart, facilitating connection with devices of different sizes and positions. Furthermore, a display screen and control buttons on the outer wall of one end of the worktable form a simple and clear human-machine interface. Operators can easily control the various functions of the device through the control buttons, and the display screen shows the working status and test data in real time, making the operation process intuitive and easy to understand. Whether in a laboratory environment or a production site, this device can quickly adapt to different testing needs without complex debugging or specialized skills, greatly improving the convenience and flexibility of operation.

[0014] 3. Compared to traditional current testing devices that often simply stack multiple independent modules to achieve multi-channel testing, resulting in a bulky overall size that occupies significant laboratory and workshop space and is difficult to transport, this high-frequency multi-channel current testing device utilizes a sophisticated structural integration design. The core components, such as the slide rail, worktable, and test board, are arranged systematically within a housing. The sliding engagement between the slide rail and worktable, and the bidirectional lead screw driving the relative movement of the test board, allow the test components to be stored within the housing when not in use, significantly reducing the device's space requirements. Furthermore, the cushioning pad at the bottom of the housing not only provides shock absorption but also optimizes the bottom support structure, avoiding additional space requirements due to extra support components. For example, in current testing within a communication base station, traditional equipment may require a large dedicated worktable, while this device, with its compact design, can be easily placed in tight equipment gaps, saving space and facilitating flexible deployment, significantly improving site space utilization. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the box body of this utility model; Figure 3 This is a schematic diagram of the interior of the housing of this utility model.

[0016] In the diagram: 1. Housing; 2. Slide rail; 3. Workbench; 4. Fixing frame; 5. Stepper motor; 6. Two-way lead screw; 7. Limiting slide bar; 8. Moving block; 9. Second moving block; 10. Test plate; 11. Second test plate; 12. Test connection port; 13. Extension port; 14. Rack; 15. Fixing base; 16. Second stepper motor; 17. Gear; 18. Display screen; 19. Control button; 20. Buffer pad. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 A high-frequency multi-channel current testing device includes a housing 1. The housing 1 serves as the outer shell of the entire device, protecting the internal structure, supporting the installation of various components, and providing a stable working space for the device. The inner walls of the housing 1 are fixedly connected to the slide rails 2 on both sides. The worktable 3 is slidably connected to the inner wall of the opposite side of the slide rails 2. The sliding connection between the slide rails 2 and the worktable 3 allows the worktable 3 to move smoothly in a straight line within the housing 1, making it convenient to adjust the position of the worktable 3 to adapt to different testing needs and operating space, thus enhancing the flexibility of the device. A fixed bracket 4 is fixedly connected to the top of the inner wall of the workbench 3. A stepper motor 5 is fixedly connected to the outer wall of one side of the fixed bracket 4. The fixed bracket 4 provides a stable mounting base for the stepper motor 5, ensuring the stability of the stepper motor 5 during operation and enabling it to reliably output power. The rotating shaft of the stepper motor 5 extends to one side of the inner wall of the fixed frame 4. The rotating shaft of the stepper motor 5 is fixedly connected to the bidirectional lead screw 6. The rotating shaft of the stepper motor 5 is connected to the bidirectional lead screw 6, which can transmit the rotational motion of the motor to the bidirectional lead screw 6, providing a power source for the movement of the subsequent structure and realizing the effective transmission of power. The bidirectional lead screw 6 is movably connected to the inner wall of the fixed frame 4 on the side away from the stepper motor 5. This connection method provides a support point for the bidirectional lead screw 6, ensuring that the bidirectional lead screw 6 remains stable during rotation, avoiding wobbling, and ensuring the accuracy of transmission. Two parallel limiting slide rods 7 are fixedly connected to the inner walls of the fixed frame 4 near the bidirectional lead screw 6. The limiting slide rods 7 can restrict the movement direction of the moving block 8 and the second moving block 9, so that they can only move along the direction of the limiting slide rods 7, ensuring that the moving block 8 and the second moving block 9 perform precise linear motion under the drive of the bidirectional lead screw 6, and improving the motion accuracy. A movable block 8 is threaded to one end of the double-acting lead screw 6, and a second movable block 9 is threaded to the other end of the double-acting lead screw 6 away from the movable block 8. The threaded connection between the double-acting lead screw 6, the movable block 8, and the second movable block 9 can convert the rotational motion of the double-acting lead screw 6 into the linear motion of the movable block 8 and the second movable block 9. Furthermore, since the threads at both ends of the double-acting lead screw 6 are in opposite directions, the movable block 8 and the second movable block 9 can move relative to each other or in opposite directions, thereby achieving precise adjustment of the position of the test plate. The inner walls of the two ends of the moving block 8 and the second moving block 9 are movably sleeved on one end of the outer wall of the limiting slide rod 7. By sleeved with the limiting slide rod 7, the stability and straightness of the movement of the moving block 8 and the second moving block 9 are further ensured, preventing them from deviating during the movement and ensuring that the test plate can accurately reach the predetermined position.

[0019] The bottom of the movable block 8 is fixedly connected to the test plate 10, and the bottom of the second movable block 9 is fixedly connected to the second test plate 11. The test plate 10 and the second test plate 11 are fixedly connected to the movable block 8 and the second movable block 9, so that the test plate can move with the movement of the movable block, thereby realizing the flexible adjustment of the position of the test plate, which is convenient for connection and testing with the device under test. The test board 10 and the second test board 11 are provided with 24 test connection ports 12 distributed in a rectangular and equidistant pattern on their tops. These test connection ports 12 can be connected to multiple current channels at the same time, realizing synchronous testing of high-frequency multi-channel current, which greatly improves the testing efficiency and meets the testing needs of complex circuit systems.

[0020] Extension openings 13 are provided on both sides of the outer wall of the workbench 3. The outer wall of the test plate 10 and the second test plate 11 extends to one end of the outer wall of the extension opening 13. The extension opening 13 provides a channel for the test plate 10 and the second test plate 11 to extend out of the workbench 3, so that the test plate can be easily connected to the external device under test, expanding the application range of the test plate and enhancing the practicality of the device.

[0021] A rack 14 is fixedly connected to the bottom of the worktable 3, and a fixed seat 15 is fixedly connected to the bottom of the inner wall of the housing 1. The rack 14 and the fixed seat 15 provide the mounting base for the subsequent transmission components, so that the meshing transmission structure of the gear and rack can be realized, and provide a power transmission path for the movement of the worktable 3. A second stepper motor 16 is fixedly installed on the top of the fixed base 15. A gear 17 is fixedly connected to the rotating shaft on one side of the second stepper motor 16. The second stepper motor 16 drives the gear 17 to rotate through the rotating shaft, providing power for the movement of the worktable 3. By controlling the operation of the second stepper motor 16, the movement speed and distance of the worktable 3 can be precisely controlled.

[0022] Gear 17 and rack 14 are meshed together. The meshing of gear 17 and rack 14 converts the rotational motion of the second stepper motor 16 into the linear motion of the worktable 3, realizing the effective transmission of power and the conversion of motion form, so that the worktable 3 can move smoothly within the housing 1.

[0023] The outer wall of one end of the workbench 3 is equipped with a display screen 18. The display screen 18 can display the working status, test data and other information of the device in real time, so that the operator can intuitively understand the operation of the device and the test results, realize the information interaction between human and machine, and facilitate the operator to monitor and adjust the device. The outer wall of the workbench 3 near the display screen 18 is provided with multiple sets of rectangularly equidistant control buttons 19. The control buttons 19 provide an interface for operators to input commands. Operators can control various functions of the device through the control buttons 19, such as starting and stopping the test, adjusting test parameters, and controlling the movement of the workbench and test board, so as to achieve convenient operation and precise control of the device.

[0024] The bottom of the housing 1 is provided with four rectangularly spaced buffer pads 20. The buffer pads 20 can absorb the vibration and impact force that the device is subjected to during placement and operation, reduce the impact of external vibration on the internal precision structure of the device, and at the same time reduce the vibration generated by the device during operation to the ground, thus protecting the device and reducing noise, ensuring that the device works in a stable environment, improving the accuracy of testing and extending the service life of the device.

[0025] Working principle: The slide rails 2 fixed on both sides of the inner wall of the housing 1 are parallel to the horizontal plane. The worktable 3 is slidably connected to the inner wall of the opposite side of the slide rail 2, forming a horizontal sliding pair. The rack 14 fixedly connected to the bottom of the worktable 3 meshes with the gear 17 driven by the second stepper motor 16 mounted on the bottom fixed seat 15 of the inner wall of the housing 1. When the second stepper motor 16 is powered on, its rotating shaft drives the gear 17 to rotate. Based on the meshing transmission principle of the gear 17 and the rack 14, the circular motion of the gear 17 is converted into the linear motion of the rack 14, thereby driving the worktable 3 to move back and forth horizontally along the slide rail 2. This linkage structure allows the workbench 3 to be adjusted as needed, facilitating the operator to move the testing device to a suitable position or to connect the test board with devices under test in different locations, meeting diverse testing scenario requirements. A stepper motor 5 is mounted on a fixed frame 4 fixed to the top of the inner wall of the workbench 3. Its rotation axis extends to one side of the inner wall of the fixed frame 4 and connects to a bidirectional lead screw 6. The connecting shaft of the bidirectional lead screw 6, away from the stepper motor 5, is movably connected to the other side of the inner wall of the fixed frame 4, providing support for the rotation of the lead screw. Two parallel limiting slide rods 7 are also fixed to the inner walls of the fixed frame 4 near the bidirectional lead screw 6. One end of the bidirectional lead screw 6 is threaded to a moving block 8, and the other end is threaded to a second moving block 9. The inner walls of the moving blocks 8 and the second moving blocks 9 are movably sleeved on the outer walls of the limiting slide rods 7. When the stepper motor 5 starts, the rotating shaft drives the bidirectional lead screw 6 to rotate. Because the threads at both ends of the bidirectional lead screw 6 rotate in opposite directions, the moving block 8 and the second moving block 9 move in opposite directions on the lead screw. The limiting slide bar 7 restricts the direction of movement, ensuring that the moving block 8 and the second moving block 9 can only move in a straight line in the horizontal direction. As a result, the test plate 10 fixed at the bottom of the moving block 8 and the second test plate 11 at the bottom of the second moving block 9 can move relatively close or far apart, which makes it convenient for the test plates to accurately adjust the spacing according to the size and connection requirements of the device under test, and accurately connect or separate with the current connection parts of the device. The top of the test plate 10 and the second test plate 11 are provided with 24 test connection ports 12 arranged in a rectangular equidistant pattern. The extension ports 13 opened on both sides of the outer wall of the workbench 3 allow one side of the outer wall of the test plate 10 and the second test plate 11 to extend to the outside. When the test plate 10 and the second test plate 11 are moved to the designated position under the drive of the stepper motor 5, the test connection ports 12 can be quickly connected to multiple current channels of the device under test. These test ports 12 constitute a multi-channel test interface, enabling simultaneous high-frequency testing of multiple current channels. Through the built-in circuit system, current data is acquired and transmitted, achieving high-frequency multi-channel current testing and greatly improving testing efficiency. This meets the synchronous detection requirements of multiple current channels in complex circuit systems. The display screen 18 and multiple sets of rectangularly spaced control buttons 19, mounted on the outer wall of one end of the workbench 3, form a human-machine interface module. Operators input commands through the control buttons 19, such as controlling the second stepper motor 16 to move the workbench 3 back and forth, adjusting the speed and direction of the stepper motor 5 to adjust the test board spacing, or setting test parameters.These instructions are transmitted via circuitry to the device's control system. The control system drives the corresponding motors according to the instructions. Simultaneously, the display screen 18 shows the device's operating status, test data, parameter settings, and other information in real time, enabling two-way information interaction and precise control between the operator and the testing device. This allows the operator to monitor the testing process in real time, adjust test parameters promptly, and ensure smooth testing. Four rectangular, equidistant buffer pads 20, made of elastic material, are located at the bottom of the housing 1. During device placement and operation, these buffer pads 20 contact the ground, effectively absorbing external vibrations and impacts, reducing the impact of ground vibrations on the device's internal precision structure, and minimizing the transmission of vibrations generated during device operation to the ground. This structure provides buffer protection for the device, preventing vibration interference with test accuracy, ensuring stable operation, extending the device's lifespan, and guaranteeing the accuracy and reliability of high-frequency multi-channel current testing.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-frequency, multi-channel current testing device, characterized in that, include: Box (1); The inner walls of the box (1) are fixedly connected to slide rails (2), and a worktable (3) is slidably connected to the inner wall of the opposite side of the slide rails (2). A fixed frame (4) is fixedly connected to the top of the inner wall of the workbench (3), and a stepper motor (5) is fixedly connected to the outer wall of one side of the fixed frame (4). The rotating shaft of the stepper motor (5) extends to one side of the inner wall of the fixed frame (4), and the rotating shaft of the stepper motor (5) is fixedly connected to a bidirectional lead screw (6). The bidirectional lead screw (6) is movably connected to the inner wall of the fixed frame (4) on the side away from the stepper motor (5). The fixed frame (4) is fixedly connected to two parallel limiting slide rods (7) on both sides of the inner wall of the bidirectional lead screw (6). The bidirectional lead screw (6) has a moving block (8) threadedly connected to the outer wall of one end, and a second moving block (9) threadedly connected to the outer wall of the end of the bidirectional lead screw (6) away from the moving block (8). The inner walls of the two ends of the movable block (8) and the second movable block (9) are movably sleeved on one end of the outer wall of the limiting slide rod (7).

2. The high-frequency multi-channel current testing device according to claim 1, characterized in that: The bottom of the movable block (8) is fixedly connected to a test plate (10), and the bottom of the second movable block (9) is fixedly connected to a second test plate (11). The top of the test board (10) and the second test board (11) are provided with 24 test connection ports (12) that are distributed in a rectangular and equidistant manner.

3. The high-frequency multi-channel current testing device according to claim 2, characterized in that: The workbench (3) has extension openings (13) on both sides of its outer wall, and the outer wall of the test plate (10) and the second test plate (11) extends to one end of the outer wall of the extension opening (13).

4. The high-frequency multi-channel current testing device according to claim 1, characterized in that: The bottom of the workbench (3) is fixedly connected to a rack (14), and the bottom of the inner wall of the box (1) is fixedly connected to a base (15). The top of the fixed base (15) is fixedly installed with a second stepper motor (16), and a gear (17) is fixedly connected to one side of the rotating shaft of the second stepper motor (16).

5. The high-frequency multi-channel current testing device according to claim 4, characterized in that: The gear (17) and the rack (14) are meshed.

6. The high-frequency multi-channel current testing device according to claim 1, characterized in that: The workbench (3) has a display screen (18) on one end of its outer wall. The workbench (3) has multiple sets of rectangular control buttons (19) arranged at equal intervals on the outer wall of the end near the display screen (18).

7. The high-frequency multi-channel current testing device according to claim 1, characterized in that: The bottom of the box (1) is provided with four rectangular buffer pads (20) distributed at equal intervals.

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