Test apparatus for magnetic encoder plates

Abstract

The application discloses a kind of test equipment of magnetic encoder board, the test equipment includes installation platform and test fixture, magnetic code disc and test mainboard on the installation platform, the top of the test fixture has accommodating cavity, the magnetic code disc is located directly above the test fixture and is arranged with the test fixture at a preset distance, the test mainboard has first power input interface for being electrically connected with external power supply, first power output interface for powering the measured magnetic encoder board, communication interface for outputting detection result and data acquisition interface for being electrically connected with the measured magnetic encoder board.The application is advantageous to improve the detection efficiency of magnetic encoder board.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of driving devices, in particular to a testing device for a magnetic encoder board. BACKGROUND

[0002] A collaborative robot arm is generally composed of multiple joint modules, and the joint modules include a motor, a reducer, a brake, a magnetic code disc, a magnetic encoder board, a joint servo drive controller board, and a joint servo drive power board, so that the collaborative robot arm has the characteristics of small volume and high joint integration in structure.

[0003] The existing detection method for the magnetic encoder board is generally to install the magnetic encoder board on the joint module, and then detect whether the joint module can operate normally. However, this detection method needs manual repeated disassembly and assembly of the magnetic encoder board, thereby resulting in low detection efficiency. SUMMARY

[0004] The main purpose of the present application is to provide a testing device for a magnetic encoder board, which aims to solve the technical problem of low efficiency in detecting the existing magnetic encoder board.

[0005] To achieve the above purpose, the present application provides a testing device for a magnetic encoder board, which comprises a mounting table, a test fixture, a magnetic code disc and a test mainboard located on the mounting table. The top of the test fixture has a receiving cavity. The magnetic code disc is located directly above the test fixture and is arranged at a predetermined distance from the test fixture. The test mainboard has a first power input interface for electrically connecting with an external power supply, a first power output interface for supplying power to the measured magnetic encoder board, a communication interface for outputting detection results, and a data acquisition interface for electrically connecting with the measured magnetic encoder board.

[0006] Preferably, the test mainboard comprises a first circuit board and a second circuit board. The first power input interface and the communication interface are located on the first circuit board, and the first circuit board further has a second power output interface and a first signal interface. The first power output interface and the data acquisition interface are located on the second circuit board, and the second circuit board further has a second power input interface electrically connected with the second power output interface and a second signal interface electrically connected with the first signal interface.

[0007] Preferably, the receiving cavity has a probe electrically connected with the first power output interface, and the data acquisition interface can be electrically connected with the measured magnetic encoder board through a cable.

[0008] Preferably, the testing equipment further includes a display screen disposed on the mounting platform and electrically connected to the test motherboard, the display screen being able to display the voltage value at the first power input interface and the voltage value output from the first power output interface.

[0009] Preferably, the test equipment further includes a power supply device electrically connected to the first power input interface.

[0010] Preferably, the mounting platform includes a test box, a mounting plate disposed on the top surface of the test box, and a mounting block slidably disposed on the mounting plate. The test fixture is located on the top surface of the test box, and the test main board is located inside the test box. The mounting block is located directly above the test fixture and can slide toward or away from the test fixture. The magnetic code disk is located on the mounting block.

[0011] Preferably, the testing equipment further includes a drive mechanism disposed on the mounting plate, the output end of the drive mechanism being connected to the mounting block to drive the mounting block to move.

[0012] Preferably, the test box includes a box body and a box cover hinged to the box body. The box cover can rotate around the hinge and block the opening end of the box body. The mounting plate and the fixture are both located on the box cover.

[0013] Preferably, the magnetic code disk is spaced 0.4 mm apart from the Hall sensor on the magnetic encoder board under test located within the test fixture.

[0014] Preferably, the testing equipment further includes an identification device disposed on the mounting platform and capable of communicating with an external terminal, the identification device being used to collect the number on the magnetic encoder board under test.

[0015] The testing equipment for magnetic encoder boards provided in this embodiment of the invention allows for the determination of the working status of the magnetic encoder board by placing the magnetic encoder board under test in a test fixture, supplying power to the magnetic encoder board under test using a test motherboard, and then obtaining whether the magnetic code disk of the magnetic encoder board under test is consistent with the preset value. This simplifies the testing method for magnetic encoder boards and thus helps to improve testing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a testing device for the magnetic encoder board in this invention.

[0017] Figure 2 for Figure 1 The diagram shows the structure of the test fixture.

[0018] Figure 3 This is a schematic diagram of the test motherboard of the testing equipment for the magnetic encoder board in this invention;

[0019] Figure 4 for Figure 1 The diagram shows the structure of the mounting platform. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] This invention proposes a testing device for magnetic encoder boards, such as... Figures 1 to 3 As shown, the testing equipment includes a mounting platform 100 and a test fixture 200, a magnetic code disk, and a test mainboard 300 located on the mounting platform 100. The test fixture 200 has a receiving cavity 210 on its top. The magnetic code disk is located directly above the test fixture 200 and is arranged at a preset distance from the test fixture 200. The test mainboard 300 has a first power input interface 311 for electrical connection to an external power source, a first power output interface 321 for powering the magnetic encoder board under test, a communication interface 312 for electrical connection to an external terminal, and a data acquisition interface 322 for electrical connection to the magnetic encoder board under test.

[0022] In the embodiment, the test fixture 200 has a receiving cavity 210. The shape of the receiving cavity 210 can be set according to the magnetic encoder board to be tested, so that the magnetic encoder board to be tested can be fixed. Specifically, the receiving cavity 210 can be provided with a positioning column 220 that can be inserted into a mounting hole on the magnetic encoder board to be tested. The magnetic code disc (i.e., the magnetic ring) is arranged on the mounting table 100 and directly above the fixture, and is spaced apart from the fixture by a predetermined distance, so that the Hall sensor on the magnetic encoder board to be tested can read the position information of the magnetic code disc. Specifically, in order to facilitate the placement of the magnetic encoder board to be tested on the test fixture 200, the distance between the test fixture 200 and the magnetic code disc can be changed to facilitate the placement of the magnetic encoder board to be tested. The test fixture 200 can be moved, or the magnetic code disc can be moved. At this time, the test fixture 200 and the magnetic code disc can be restored to the predetermined interval distance after the magnetic encoder board to be tested is placed on the test fixture 200. The test mainboard 300 has a first power input interface 311 for electrically connecting with an external power supply, a first power output interface 321 for supplying power to the magnetic encoder board to be tested, a communication interface 312 for outputting detection results, and a data acquisition interface 322 for electrically connecting with the magnetic encoder board to be tested. After the test mainboard 300 is powered on, the Hall sensor on the magnetic encoder board to be tested detects the position data of the magnetic code disc, and transmits the position data to the test mainboard 300 through the data acquisition interface 322 for processing. If the position data of the magnetic code disc obtained by the test mainboard 300 processing is equal to the preset data (since the magnetic code disc arranged on the mounting table 100 is in a fixed state, the magnetic code disc has a unique position data, so only the position data of the magnetic code disc needs to be obtained in advance), it can be judged that the magnetic encoder board to be tested works normally. If they are not equal, it is judged that the magnetic encoder board to be tested works abnormally. Then the test result is output to an external terminal (such as a computer) through the communication interface 312 for display. Of course, the test result can also be output to a warning light arranged on the mounting table 100, such as a red light indicating that the magnetic encoder board to be tested works abnormally, and a green light indicating that the magnetic encoder board to be tested works normally. The logic circuit and the processor on the test mainboard 300 can be implemented in a manner known in the art, so as to achieve the above functions. Details are not described herein. The first power output interface 321 and the data acquisition interface 322 are electrically connected with the magnetic encoder board to be tested in a manner that the test fixture 200 is provided with conductive contacts electrically connected with the first power output interface 321 and the data acquisition interface 322, respectively, and the conductive contacts can be connected with corresponding points on the magnetic encoder board to be tested to achieve electrical connection. Alternatively, the first power output interface 321 and the data acquisition interface 322 can be electrically connected with the magnetic encoder board to be tested through cables.In the embodiment, the test main board 300 is used to supply power to the measured magnetic encoder board after the measured magnetic encoder board is placed in the test fixture 200, and then whether the detected magnetic code disc of the measured magnetic encoder board is consistent with the preset value is acquired, so that the working state of the measured magnetic encoder board is judged, the test mode of the magnetic encoder board is simplified, and the detection efficiency is improved.

[0023] In a preferred embodiment, as shown in Figure 3 The first power input interface 311 and the communication interface 312 are located on the first circuit board 310, and the first circuit board 310 further has a second power output interface 313 and a first signal interface 314; the first power output interface 321 and the data acquisition interface 322 are located on the second circuit board 320, and the second circuit board 320 further has a second power input interface 323 electrically connected with the second power output interface 313 and a second signal interface 324 electrically connected with the first signal interface 314. Among them, the voltage input by the first power input interface 311 is 12V, and the voltage output by the first power output interface 321 and the voltage output by the second power output interface 313 are both 5V. At this time, the second circuit board 320 can be a servo drive controller board in a mechanical arm, the power input end of the servo drive controller board is the second power input interface 323, the debugging serial port is the second signal interface 324, and the magnetic encoder interface includes the first power output interface 321 and the data acquisition interface 322. At the same time, the communication interface 312 is preferably in the form of a USB serial port to facilitate data transmission with a computer. In the embodiment, the data collected by the measured magnetic encoder board is acquired through the data acquisition interface 322, and then the processor on the second circuit board 320 is used to judge the data, and then the second signal interface 324 is used to transmit the judgment result to the first signal interface 341 on the first circuit board 310, and then the judgment result is transmitted to an external terminal through the communication interface 312.

[0024] In a preferred embodiment, as shown in Figure 2 The probe 230 electrically connected with the first power output interface 321 is arranged in the accommodating cavity 210, so that the measured electromagnetic encoder board placed in the accommodating cavity 210 is conveniently powered, and the data acquisition interface 322 is electrically connected with the measured magnetic encoder through a cable. At this time, the test fixture 200 has an avoidance gap 240 through which the cable can pass.

[0025] In a preferred embodiment, as shown in Figure 1As shown, the preferred testing equipment also includes a display screen 400 mounted on the mounting platform 100, and each display screen 400 is electrically connected to the test motherboard 300. Preferably, there are two display screens 400, one electrically connected to the first circuit board 310 and the other electrically connected to the second circuit board 320, thus facilitating observation of whether the voltage value input to the first circuit board 310 and the voltage input to the magnetic encoder board under test are normal through the two display screens 400 respectively.

[0026] In a preferred embodiment, the preferred testing equipment further includes a power supply device disposed on the mounting platform 100. The power supply device is preferably a power source capable of outputting a preset voltage value, such as an existing adapter, thereby converting mains power into a voltage value suitable for the test motherboard 300 (i.e., the first circuit board 310). For example, the power supply device can provide 12V to the test motherboard 300. Of course, the power supply device can also be a rechargeable battery (such as a lithium battery), thereby facilitating testing in different environments. In this case, as... Figure 1 As shown, a power switch 700 for controlling the power supply circuit between the power supply device and the test motherboard 300 can also be installed on the mounting platform 100 to facilitate the start-up of the test equipment.

[0027] In a preferred embodiment, such as Figure 1 and Figure 4 As shown, the preferred mounting platform 100 includes a test chamber 110, a mounting plate 120, and a mounting block 130. The mounting plate 120 is vertically arranged on the top surface of the test chamber 110, while the mounting block 130 is slidably mounted on the mounting plate 120 and can slide vertically. At this time, the test fixture 200 is also located on the top surface of the test chamber 110, directly below the mounting block 130, with a preset distance between the test fixture 200 and the lower limit position of the mounting block 130. Simultaneously, the magnetic code disk is located on the mounting block 130, and the test main board 300 is located within the internal space of the test chamber 110. To facilitate fixing the mounting block 130 at its lower limit position during testing, a reset spring with a preset elastic coefficient (for easy manual pushing of the mounting block 130) can be provided. The two ends of the reset spring are connected to the mounting block 130 and the mounting plate 120 respectively, thereby using the spring force to restrict the mounting block 130 to its lower limit position. In this embodiment, by placing the magnetic code disk on the mounting block 130, it is convenient to place the magnetic encoder board under test into the test fixture 200 after the mounting block 130 is moved upward. At this time, it is preferable that both displays 400 are rotatably connected to the mounting plate 120, so as to facilitate the adjustment of the angle of the displays 400 to accommodate different users to observe the voltage values.

[0028] In a preferred embodiment, such as Figure 1As shown, the preferred testing equipment also includes a drive mechanism 500 mounted on the mounting plate 120. In this case, the drive mechanism 500 can move the mounting block 130 manually (e.g., using a linkage mechanism) or automatically (e.g., using a lead screw assembly and a motor). In this embodiment, the preferred drive mechanism 500 includes a handle with one end hinged to the mounting plate 120 and a connecting rod with both ends hinged to the handle and the mounting block 130 respectively, so that the mounting block 130 can be moved easily by moving the handle.

[0029] In a preferred embodiment, the test box 110 preferably includes a box body and a box cover, with one side of the box cover hinged to one side of the box body, and capable of rotating around the hinge to seal the opening of the box body. In this case, the mounting plate 120 and the test fixture 200 are both located on the box cover. The test box 110 may also include a fixing structure to facilitate fixing the box cover to the box body, such as by screws or hooks. In this embodiment, by connecting the box cover to the box body via a hinge, the installation and maintenance of the test mainboard 300 located inside the box body are facilitated.

[0030] In a preferred embodiment, the magnetic code disk located on the mounting block 130 is preferably spaced 0.4 mm apart from the Hall sensor on the magnetic encoder board under test located in the test fixture 200. That is, when the mounting block 130 is at the lower limit position, the distance between the Hall sensor and the magnetic code disk is 0.4 mm, which facilitates the Hall sensor to read the position information of the magnetic code disk.

[0031] In a preferred embodiment, such as Figure 1 As shown, to facilitate the recording of test information of the magnetic encoder board under test, the mounting platform 100 is preferably also equipped with an identification device 600 that can communicate with an external terminal. The specific device can be arranged according to the pattern of the numbering information set on the magnetic encoder board under test. For example, if the numbering information is a QR code, barcode, or number string, a barcode scanner corresponding to the numbering information pattern can be used. The identification device 600 can communicate with the external terminal by first transmitting the scanned information to the test motherboard 300, and then the test motherboard 300 associating the numbering information with the test information of the magnetic encoder board under test before sending it to the external terminal. This helps avoid mismatches between the numbering information and the test information. Alternatively, the identification device 600 can be directly connected to the external terminal, thereby directly sending the numbering information of the magnetic encoder board under test to the external terminal. Of course, the identification device 600 can also be set up separately and does not necessarily have to be mounted on the mounting platform 100.

[0032] The above are only some or preferred embodiments of the present invention. Neither the text nor the drawings should limit the scope of protection of the present invention. All equivalent structural transformations made using the content of the present invention's specification and drawings under the overall concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A test apparatus for a magnetic encoder board, characterized by, The installation table comprises a test fixture, a magnetic code disc and a test mainboard, the top of the test fixture has a containing cavity, the magnetic code disc is arranged above the test fixture and spaced a preset distance from the test fixture, the test mainboard has a first power input interface for electrically connecting with an external power supply, a first power output interface for supplying power to a measured magnetic encoder board, a communication interface for outputting detection results and a data acquisition interface for electrically connecting with the measured magnetic encoder board; The installation table comprises a test box, an installation plate arranged on the top surface of the test box and an installation block slidingly arranged on the installation plate, the test fixture is arranged on the top surface of the test box, and the test mainboard is arranged in the test box; the installation block is arranged above the test fixture and can slide towards or away from the test fixture, and the magnetic code disc is arranged on the installation block; The test device of the magnetic encoder board further comprises a driving mechanism arranged on the installation plate, and an output end of the driving mechanism is connected with the installation block to drive the installation block to move.

2. The test apparatus of claim 1, wherein, The test mainboard comprises a first circuit board and a second circuit board, the first power input interface and the communication interface are arranged on the first circuit board, and the first circuit board further has a second power output interface and a first signal interface; the first power output interface and the data acquisition interface are arranged on the second circuit board, and the second circuit board further has a second power input interface electrically connected with the second power output interface and a second signal interface electrically connected with the first signal interface.

3. The test apparatus of claim 1, wherein, The containing cavity has a probe electrically connected with the first power output interface, and the data acquisition interface can be electrically connected with the measured magnetic encoder board through a cable.

4. The test apparatus of claim 1, wherein, Further comprising a display screen arranged on the installation table and electrically connected with the test mainboard, the display screen can display the voltage value at the first power input interface and the voltage value output by the first power output interface.

5. The test apparatus of claim 1, wherein, Further comprising a power supply device electrically connected with the first power input interface.

6. The test apparatus of claim 1, wherein, The test box comprises a box body and a box cover hinged with the box body, the box cover can be rotated around the hinge to seal the open end of the box body, and the installation plate and the test fixture are arranged on the box cover.

7. The test apparatus of claim 1, wherein, The magnetic code disc is spaced 0.4mm from a Hall sensor on the measured magnetic encoder board in the test fixture.

8. The test apparatus of claim 1, wherein, Further comprising an identification device arranged on the installation table and capable of communicating with an external terminal, the identification device is used for acquiring a number on the measured magnetic encoder board.

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