Mechanical arm-based digital multimeter calibration platform

Abstract

A kind of digital multimeter calibration platform based on mechanical arm, it is related to digital multimeter calibration technical field, including base, camera support, meter pen rack and object table are fixedly installed on the base, wherein object table is slidably installed on base, object table is used to place digital multimeter, and positioning mechanism for fixing the position of digital multimeter is installed on object table;The meter pen rack is used to clamp digital multimeter detection pen, 3D camera is installed on the camera support, and the 3D camera is used to shoot the front of digital multimeter, to solve the problem of staff's heavy work intensity.

Description

Technical Field

[0001] The utility model relates to the field of digital multimeter calibration technology, specifically to a digital multimeter calibration platform based on a robotic arm. Background Technology

[0002] Digital multimeters are generally divided into three types: handheld, benchtop, and laboratory. Handheld digital multimeters often require calibration after manufacturing to ensure accurate readings during subsequent use.

[0003] However, the calibration of digital multimeters is currently often done manually. This means that the staff holds the digital multimeter they have produced, connects it to the calibration kit, and then rotates the corresponding knobs according to the calibration procedure and records the corresponding data. However, in this method, on the one hand, the staff needs to hold the digital multimeter for a long time, which makes the staff's workload heavy, and on the other hand, manual recording is prone to omissions or errors.

[0004] Chinese patent CN203357089U discloses a fixture for milling connecting rod mating surfaces. The fixture and clamping device are used to clamp the workpiece, which facilitates processing. However, for digital multimeters, although the simple clamping mechanism can reduce the number of times workers pick up and put down the digital multimeter, it cannot improve the problem of manual recording during the calibration process of the digital multimeter.

[0005] Therefore, we propose a device that can reduce the labor intensity of workers. Utility Model Content

[0006] The purpose of this invention is to provide a digital multimeter calibration platform based on a robotic arm, which is used to solve the problem of high workload for workers.

[0007] This utility model is achieved through the following technical solution: A robotic arm-based digital multimeter calibration platform includes a base on which a camera bracket, a probe holder, and a stage are fixedly mounted. The stage is slidably mounted on the base and is used to place the digital multimeter. A positioning mechanism for fixing the position of the digital multimeter is installed on the stage. The probe holder is used to hold the test probes of the digital multimeter. A 3D camera is mounted on the camera bracket for photographing the front of the digital multimeter.

[0008] Furthermore, the positioning mechanism includes a limiting block and multiple telescopic cylinders, wherein the limiting block abuts against one side of the digital multimeter, and the telescopic ends of the multiple telescopic cylinders abut against the other three sides of the digital multimeter respectively.

[0009] Furthermore, a linear motor and a slide rod parallel to the linear motor are installed on the base. One side of the platform is fixedly connected to the linear motor, and the other side of the platform is slidably connected to the slide rod.

[0010] Furthermore, two sets of buffer blocks are fixedly installed on the base, with the two sets of buffer blocks located at both ends of the slide rod respectively.

[0011] Furthermore, the 3D camera is an Intel RealSense D415.

[0012] The technical solution of this utility model has at least the following advantages and beneficial effects: This utility model discloses a digital multimeter calibration platform based on a robotic arm. The positioning mechanism can fix the position of the digital multimeter, and the fixing action is performed automatically. This reduces the holding time of the staff when calibrating the digital multimeter, thereby reducing the workload of the staff.

[0013] On the other hand, 3D cameras can photograph the surface of digital multimeters, allowing a host computer to extract the multimeter readings from the photographs, eliminating the need for manual recording and improving the accuracy of reading records. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of one structure of the present utility model.

[0015] Reference numerals in the attached drawings: 1. Base; 2. Stage; 3. Positioning mechanism; 31. Limiting block; 32. Telescopic cylinder; 4. Pencil holder; 5. Camera bracket; 6. Linear motor; 7. Slide rod; 8. Buffer block. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Example 1: As Figure 1The illustrated digital multimeter calibration platform based on a robotic arm includes a base 1, on which a camera bracket 5, a pointer holder 4, and a platform 2 are fixedly mounted. The platform 2 is slidably mounted on the base 1 and is used to place the digital multimeter. A positioning mechanism 3 for fixing the position of the digital multimeter is installed on the platform 2. The digital multimeter is picked up by an upstream transfer robotic arm and placed on the platform 2. Before the digital multimeter is placed on the platform 2, the positioning mechanism 3 is in the open state. After the digital multimeter is placed on the platform, the positioning mechanism 3 closes, thereby fixing the position of the digital multimeter. Furthermore, the positioning mechanism 3 includes a limiting block 31 and multiple telescopic cylinders 32. The limiting block 31 abuts against one side of the digital multimeter, and the telescopic ends of the multiple telescopic cylinders 32 abut against the other three sides of the digital multimeter, respectively. That is, when the positioning mechanism 3 is in the open state, the telescopic ends of the multiple telescopic cylinders 32 are all in the retracted state. At this time, the digital multimeter can be grasped by the upstream robotic arm and placed between the multiple telescopic cylinders 32 and the limiting block 31. When the positioning mechanism 3 is in the closed state, the telescopic ends of the multiple telescopic cylinders 32 are all in the extended state, so that three sides of the digital multimeter abut against the telescopic ends of the telescopic cylinders 32, and the fourth side of the digital multimeter abuts against the limiting block 31, thereby fixing the position of the digital multimeter.

[0018] The probe holder 4 is used to hold the test probes of the digital multimeter. The camera bracket 5 is equipped with a 3D camera, which is used to photograph the front of the digital multimeter. Since the test probes of the digital multimeter need to be connected to the SCPI controller during calibration, the probe holder 4, after being correspondingly engaged with the test probes, can effectively prevent the test probes from detaching from the SCPI controller, thus ensuring the smooth progress of the calibration operation. In addition, the 3D camera can photograph the surface of the digital multimeter, so that the host computer can extract the readings of the digital multimeter from the photographs, eliminating the need for manual recording and improving the accuracy of reading recording. Specifically, the 3D camera is an Intel RealSense D415.

[0019] Example 2: As one example, a linear motor 6 and a slide rod 7 parallel to the linear motor 6 are installed on the base 1. One side of the platform 2 is fixedly connected to the linear motor 6, and the other side of the platform 2 is slidably connected to the slide rod 7. By moving the linear motor 6, the platform 2 can be driven to move synchronously, and the linear motor 6 and the slide rod 7 can keep the platform 2 horizontal.

[0020] In addition, two sets of buffer blocks 8 are fixedly installed on the base 1. The two sets of buffer blocks 8 are located at both ends of the slide bar 7. The two sets of buffer blocks 8 can limit the movement distance of the stage 2. Since the position of the 3D camera is fixed by the camera bracket 5, the position of the digital multimeter can be adjusted by moving the stage 2, thereby ensuring that the 3D camera can effectively photograph the digital multimeter.

[0021] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A digital multimeter calibration platform based on a robotic arm, characterized in that, The device includes a base (1), on which a camera bracket (5), a pointer holder (4), and a stage (2) are fixedly installed. The stage (2) is slidably installed on the base (1) and is used to place a digital multimeter. A positioning mechanism (3) for fixing the position of the digital multimeter is installed on the stage (2). The pointer holder (4) is used to hold the test pen of the digital multimeter. A 3D camera is installed on the camera bracket (5) and is used to photograph the front of the digital multimeter.

2. The digital multimeter calibration platform based on a robotic arm according to claim 1, characterized in that: The positioning mechanism (3) includes a limiting block (31) and multiple telescopic cylinders (32), wherein the limiting block (31) is in contact with one side of the digital multimeter, and the telescopic ends of the multiple telescopic cylinders (32) are respectively in contact with the other three sides of the digital multimeter.

3. The digital multimeter calibration platform based on a robotic arm according to claim 1, characterized in that: A linear motor (6) and a slide bar (7) parallel to the linear motor (6) are installed on the base (1). One side of the platform (2) is fixedly connected to the linear motor (6), and the other side of the platform (2) is slidably connected to the slide bar (7).

4. The digital multimeter calibration platform based on a robotic arm according to claim 1, characterized in that: Two sets of buffer blocks (8) are fixedly installed on the base (1), and the two sets of buffer blocks (8) are located at both ends of the slide rod (7).

5. The digital multimeter calibration platform based on a robotic arm according to claim 1, characterized in that: The 3D camera is an Intel RealSense D415.

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