Multi-station switch test control system and control test method

Abstract

The application provides a multi-station switch test control system and a control test method, the multi-station switch test control system comprises a PLC control unit, a touch screen, an upper computer, a monitoring input unit and a plurality of station test modules; by adopting the station test module which can simultaneously perform rotary motion and linear movement, the rotary switch, button switch, flat push switch, rocker switch, keyboard switch and the like can be tested; meanwhile, a plurality of station test modules are arranged, each station test module is connected in communication with the PLC control unit, so that synchronous, asynchronous and differential tests among a plurality of samples can be realized; in addition, the upper computer is arranged, a user can compile a program by means of the upper computer, and the program can be stored and called, so that the test can be flexibly performed according to the actual test condition, and the detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of switch testing technology, specifically to a multi-station switch testing and control system and a control and testing method. Background Technology

[0002] During the testing of appliance switches, samples need to undergo rotation, pressing, pushing, rocker, and piano key-like action tests. To save and make reasonable use of the load and power supply, multiple samples need to be tested, including synchronous, asynchronous, and differential tests. However, existing switch testing systems have too many test steps, resulting in long test cycles and poor test stability.

[0003] Currently, some switch testing equipment has appeared on the market. For example, a patent application with patent number CN202222881489.0, entitled "A Multi-Position Switch Testing Equipment," discloses that the switch testing equipment includes a base, a support frame fixedly installed on the upper outer surface of the base, a mounting top plate fixedly installed on the upper outer surface of the support frame, an electric cylinder provided on the upper outer surface of the mounting top plate, a pressing block provided at the other end of the piston rod of the electric cylinder, a PLC controller provided on the front outer surface of the base, and a multi-position rotary support platform for improving switch testing efficiency provided on the upper outer surface of the base. The multi-position rotary support platform includes a base, a connecting shaft, and a drive motor. A rolling bearing is provided between one end of the connecting shaft and the lower inner surface of the base, and a transmission gear is fixedly installed in the middle of the outer ring of the connecting shaft. The multi-position switch testing equipment of the present invention, by setting a multi-position rotary support platform, has a simple structure, is easy to operate, and can realize multi-position automatic testing of switches, greatly improving the efficiency of switch testing.

[0004] Although this multi-station switch testing equipment can perform multi-station switch testing, it is difficult to achieve the goals of saving and rationally utilizing the load, i.e., it is difficult to perform synchronous, asynchronous, and differential tests on multiple samples. Therefore, it is particularly important to provide a test control system and test method that can realize multi-station testing while simplifying the test procedures. Summary of the Invention

[0005] In view of the deficiencies in the existing technology, the purpose of this invention is to provide a multi-station switch test control system and control test method that can realize multi-station testing and simplify the test steps.

[0006] To achieve the above objectives, the present invention is as follows: In a first aspect, this application provides a multi-station switch test and control system, which includes a PLC control unit, a host computer, and multiple station test modules. Each station test module includes a drive shaft, a first bushing and a second bushing sleeved on the drive shaft, a first servo motor and a second servo motor disposed outside the drive shaft, a switch test fixture detachably connected to the bottom of the drive shaft, and a switch fixing seat disposed below the switch test fixture for fixing the switch under test. The first bushing is driven by the first servo motor and screw-fitted with the drive shaft to raise and lower the drive shaft. The second bushing is driven by the second servo motor and engages with the drive shaft to rotate the drive shaft. The host computer is communicatively connected to the PLC control unit, and the PLC control unit is communicatively connected to the multiple station test modules for controlling each station test module to perform switch test actions.

[0007] Furthermore, the workstation testing module also includes an isolation output unit, which is used to control the on / off state of the solenoid valve group and / or AC contactor.

[0008] Furthermore, the multi-station switch test control system also includes a monitoring input unit for monitoring the status of each unit in the station test module, and the monitoring input unit is communicatively connected to the PLC control unit.

[0009] Furthermore, the multi-station switch test control system also includes a touch screen, which is communicatively connected to the PLC control unit.

[0010] Furthermore, a first drive wheel is fixed to the bottom output end of the first servo motor, a first driven wheel is fixed to the first bushing, and a first synchronous belt is connected between the first drive wheel and the first driven wheel; a second drive wheel is fixed to the bottom output end of the second servo motor, a second driven wheel is fixed to the second bushing, and a second synchronous belt is connected between the second drive wheel and the second driven wheel.

[0011] Furthermore, the outer side wall of the drive shaft is provided with an external thread, and the inner side wall of the first bushing is provided with an internal thread that mates with the external thread, and the external thread and the internal thread are screwed together; the outer side wall of the drive shaft is provided with an axial groove, and the inner side wall of the second bushing is longitudinally fixed with a protrusion that mates with the groove, and the protrusion is inserted into the groove.

[0012] Furthermore, an air path conversion head is provided above the drive shaft, and a rotating seat is rotatably connected to the bottom of the air path conversion head. The rotating seat is fixed above the top of the drive shaft, and a slide rail is fixed on one side of the drive shaft at intervals parallel to the drive shaft. The air path conversion head is slidably connected to the slide rail. The air path conversion head is provided with at least one air path inlet, and the bottom of the rotating seat is provided with an air path outlet communicating with the air path inlet. At least one flexible air tube is connected to the air path outlet. The drive shaft is internally vacuumed, and the flexible air tube passes downward through the interior of the drive shaft and is connected to the switch test fixture.

[0013] Secondly, this application also provides a control testing method based on the multi-station switch test control system described above, the control testing method comprising: S1. All servo systems in multiple workstation test modules are returned to their original state and reset. S2. Perform the first station test according to the preset test sequence. During the test, the servo motor operates in the first gear. S3. After the test of the first gear is completed, determine whether the current gear is the preset gear. If not, increment the gear by one and return to step S2 above. If yes, the servo system returns to the original state and resets, increments the test station by one, and determines whether the incremented station is greater than the maximum station set by the system. If not, return to step S2 above. If yes, increment the count by one and compare the incremented count with the system's preset count. If they are equal, the test is completed. If not, return to step S2.

[0014] Furthermore, during the test in step S2, the voltage of the servo system in the workstation test module needs to be detected. If the voltage detection meets the preset value, a current surge is performed. If it does not meet the preset value, it is determined whether the servo action is completed.

[0015] Furthermore, in step S2, the impact time of the current surge needs to be determined. If the preset impact time is reached, then step S3 is performed; otherwise, the process returns to continue the current surge.

[0016] The beneficial effects of this invention are as follows: by employing a station test module capable of simultaneous rotational and linear movement, tests can be performed on switches such as rotary switches, buttons, push switches, rocker switches, and piano keys; furthermore, since multiple such station test modules are provided, each communicating with a PLC control unit, synchronous, asynchronous, and differential tests between multiple samples can be achieved; in addition, by providing a host computer, users can program, store, and recall programs, flexibly performing tests according to actual testing conditions, thus accelerating testing efficiency. Attached Figure Description

[0017] Figure 1This is a block diagram illustrating the structural principle of the multi-station switch test control system according to an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the test steps for the multi-position switch control test method according to an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the multi-station switch control test method in the embodiments of this application.

[0020] Figure 4 This is a perspective view of the workstation testing module described in this invention.

[0021] Figure 5 This is a perspective view of the air path conversion head and drive shaft described in this invention.

[0022] Figure 6 This is a perspective view of the present invention with the drive shaft and its drive portion removed.

[0023] Figure 7 This is an exploded perspective view of the drive shaft, the first bushing, and the second bushing described in this invention.

[0024] Figure 8 This is a perspective view of the flat-push straight-strike clamp described in this invention.

[0025] Figure 9 This is a perspective view of the rotating test fixture described in this invention.

[0026] In the picture: 10-Multi-station switch test and control system, 100-PLC control unit, 200-Host computer, 300-Monitoring input unit, 400-Touch screen, 500-Station test module, 501-First servo motor, 502-Second servo motor, 503-Isolation output unit; Drive shaft 1, external thread 11, groove 12, connector 13, slide rail 14, connector head 15, turntable 16, connecting rod 17, first bushing 2, first bearing 20, first driven wheel 21, internal thread 22, second bushing 3, second bearing 30, second driven wheel 31, protrusion 32, first drive wheel 41, first synchronous belt 42, first tension wheel 43, second drive wheel 51, second synchronous belt 52, second tension wheel 53, flat push straight drive clamp 61. Mounting plate 611. Fixing plate 612. Cylinder 613. Striking rod 614. Air inlet 615. Rotation test fixture 62. Coupling 621. Rotating shaft 622. Rotating body 623. Switch fixing seat 7. Upper limit sensor 81. Origin sensor 82. Lower limit sensor 83. Rotation start point sensor 84. Rotation end point sensor 85. Air circuit conversion head 9. Slider 90. Rotating seat 91. Air circuit inlet 92. Flexible air tube 93. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] See appendix Figure 1 As shown, this embodiment provides a multi-station switch test control system 10, which includes a PLC control unit 100, a touch screen 400, a host computer 200, a monitoring input unit 300, and multiple station test modules 500.

[0029] The touchscreen 400 is communicatively connected to the PLC control unit 100. The operator can use the touchscreen 400 to input corresponding start commands or setting parameters to the PLC control unit 100. This can be used for on-site parameter setting, motion control, and status monitoring. In one embodiment, a power-off storage area can be created in the touchscreen 400 to store multiple user programs. When the user selects a program, the program content is downloaded to the PLC control unit 100 for execution.

[0030] The host computer 200 is also connected to the PLC control unit 100, and operators can perform programming, debugging, monitoring and background processing on the host computer 200.

[0031] The monitoring input unit 300 is communicatively connected to the PLC control unit 100. The monitoring input unit 300 is used to monitor various input items in the entire test system, such as the near limit, far limit, and origin of the motor movement in each station test module 500, as well as the energized status of the product under test.

[0032] Continue to refer to the appendix Figure 1 As shown, multiple workstation test modules 500 are respectively connected to the PLC control unit 100 for communication. The PLC control unit 100 is used to control the operation of each workstation test module 500.

[0033] For ease of description, the number of workstation test modules 500 in this embodiment is only three. It can be understood that the number of workstation test modules 500 can be flexibly adjusted as needed and is not limited thereto.

[0034] In one embodiment, the workstation testing module 500 further includes an isolation output unit 503, which is used to control the on / off state of solenoid valve groups and / or AC contactors. For example, it can be used to control multiple solenoid valve groups to achieve action switching, mainly for rocker or piano key-like actions; it can also be used to control multiple AC contactors to achieve actions such as sample power on / off and load switching.

[0035] See appendix Figure 6-9As shown, the workstation testing module 500 includes a drive shaft 1, a first bushing 2 and a second bushing 3 sleeved on the drive shaft 1, a first servo motor 501 and a second servo motor 502 disposed on the outside of the drive shaft 1, a switch test fixture detachably connected to the bottom of the drive shaft 1, and a switch fixing seat 7 disposed below the switch test fixture for fixing the switch under test. The first bushing 2 is driven by the first servo motor 501 and screwed into the drive shaft 1 to lift the drive shaft 1. The second bushing 3 is driven by the second servo motor 502 and engages with the drive shaft 1 to rotate the drive shaft 1.

[0036] The workstation testing module 500 of this invention mainly uses two servo motors, one responsible for rotational motion and the other for linear motion, to control the movement of the same axis, achieving both rotational and linear motion, thus realizing the goal of one machine serving multiple purposes. It can be applied to different types of switches, including sliding / push, button, rocker, and rotary switches, meeting the testing needs of different types of switches while reducing costs, improving efficiency, and simplifying operation.

[0037] To facilitate the rotation of the first bushing 2 and the second bushing 3, the first bushing 2 is fitted with a first bearing 20, and the first bushing 2 is fitted onto the inner ring of the first bearing 20. The second bushing 3 is fitted with a second bearing 30, and the second bushing 3 is fitted onto the inner ring of the second bearing 30.

[0038] In this embodiment, a first driving wheel 41 is fixed to the bottom output end of the first servo motor 501, and a first driven wheel 21 is fixed to the first bushing 2. A first synchronous belt 42 connects the first driving wheel 41 and the first driven wheel 21. A second driving wheel 51 is fixed to the bottom output end of the second servo motor 502, and a second driven wheel 31 is fixed to the second bushing 3. A second synchronous belt 52 connects the second driving wheel 51 and the second driven wheel 31. The above transmission structure is simple and easy to use. Of course, in other embodiments, other transmission mechanisms such as belt drives and gear drives can also be used instead.

[0039] In this embodiment, a first tensioning pulley 43 is attached to one side of the first synchronous belt 42, and a second tensioning pulley 53 is attached to one side of the second synchronous belt 52. The tensioning pulleys are used to control the tension of the synchronous belts and can automatically adjust the tension according to different tightness of the synchronous belts, so as to make the transmission system stable, safe and reliable.

[0040] In this embodiment, the outer side wall of the drive shaft 1 is provided with an external thread 11, and the inner side wall of the first bushing 2 is provided with an internal thread 22 that mates with the external thread 11. The external thread 11 and the internal thread 22 are screwed together. The external thread 11 and the internal thread 22 cooperate with each other to raise and lower the drive shaft 1.

[0041] In this embodiment, the outer side wall of the drive shaft 1 is provided with an axial groove 12, and the inner side wall of the second bushing 3 is longitudinally fixed with a protrusion 32 that mates with the groove 12. The protrusion 32 is inserted into the groove 12. The groove 12 and the protrusion 32 cooperate with each other to rotate the drive shaft 1.

[0042] In this embodiment, a plurality of first sensors for detecting the height of the drive shaft 1 and a plurality of second sensors for detecting the rotation path of the drive shaft 1 are fixed on the outer side of the drive shaft 1. The distance of ascent / descent is precisely controlled by the sensing signals of the first sensors, and the rotation angle is precisely controlled by the sensing signals of the second sensors. Specifically, the first sensors include an upper limit sensor 81, an origin sensor 82, and a lower limit sensor 83 arranged sequentially from top to bottom at intervals; the second sensors include a rotation start point sensor 91 and a rotation end point sensor 92 arranged sequentially from top to bottom at intervals.

[0043] In this embodiment, a connector 13 is fixed to the bottom of the drive shaft 1, and the switch test fixture includes a flat-push straight-thrust fixture 61 or a rotary test fixture 62 detachably connected to the bottom of the connector 13. The above structure can be configured to allow for replacement of the required switch test fixture as needed.

[0044] In this embodiment, the rotary test fixture 62 includes a coupling 621 detachably connected to the bottom of the connector 13, a rotating shaft 622 fixed to the bottom of the coupling 621, and a rotating body 623 detachably connected to the bottom of the rotating shaft 622. Specifically, the rotating body 623 includes a first cylinder, a second cylinder, and an inverted frustum, coaxially fixed from top to bottom. This structure allows for the testing of rotary switches.

[0045] In this embodiment, the flat-push straight-strike clamp 61 includes a mounting plate 611 detachably connected to the bottom of the connector 13, a fixing plate 612 slidably connected to the front end of the mounting plate 611, and two cylinders 613 longitudinally and side-by-side fixed to the front end of the fixing plate 612. A striking rod 614 is fixed to the bottom output end of each of the two cylinders 613. The striking rod 614 allows for testing of sliding / flat-push, button, and rocker switches.

[0046] The working principle of the workstation testing module 500 of the present invention is as follows: Lifting process: The first servo motor 501 is activated, but the second servo motor 502 is not. At this time, the first servo motor 501 rotates, driving the first driven wheel 21 to rotate. The first driven wheel 21 drives the first bushing 2 to rotate, thereby driving the drive shaft 1 to rotate. However, the second servo motor 502 is not working at this time, that is, the second bushing 3 is stationary. Due to the cooperation of the groove 12 and the protrusion 32, the rotation of the drive shaft 1 is restricted. However, the first bushing 2 still rotates, so the drive shaft 1 moves up and down along the axial direction of the drive shaft 1 under the action of the first bushing 2.

[0047] Specifically, the axial direction of movement of the drive shaft 1 is determined by the rotation direction of the first servo motor 501. When the first servo motor 501 rotates clockwise, the drive shaft 1 moves upward; when the first servo motor 501 rotates counterclockwise, the drive shaft 1 moves downward. Of course, in other embodiments, the driving method by which the first servo motor 501 ultimately drives the drive shaft 1 can be changed so that when the first servo motor 501 rotates clockwise, the drive shaft 1 moves downward; and when the first servo motor 501 rotates counterclockwise, the drive shaft 1 moves upward.

[0048] Rotation process: The first servo motor 501 and the second servo motor 502 are started simultaneously (the first servo motor 501 and the second servo motor 502 have the same rotation speed and direction). The rotation of the first servo motor 501 ultimately drives the drive shaft 1 to rotate (see the lifting process for the specific driving method). At the same time, the second servo motor 502 drives the second driven wheel 31 to rotate. The driven wheel drives the second inner ring of the second bushing 3 to rotate. Through the interaction between the protrusion 32 of the second bushing 3 and the groove 12 of the drive shaft 1, the drive shaft 1 is driven to rotate synchronously. The second servo motor 502 and the first servo motor 501 have the same rotation speed and direction, so the second inner ring and the first inner ring have the same rotation speed and direction. At this time, the rotation of the drive shaft 1 can be realized, and the drive shaft 1 has no relative lifting or lowering movement relative to the first bushing 2.

[0049] The rotation direction of drive shaft 1 is controlled by the direction of rotation of the second servo motor 502. Specifically, when the second servo motor 502 rotates clockwise, drive shaft 1 rotates clockwise; when the second servo motor 502 rotates counterclockwise, drive shaft 1 rotates counterclockwise. Of course, in other embodiments, the driving method by which the second servo motor 502 ultimately drives drive shaft 1 can be changed, so that when the second servo motor 502 rotates clockwise, drive shaft 1 rotates counterclockwise; and when the second servo motor 502 rotates counterclockwise, drive shaft 1 rotates clockwise.

[0050] In other embodiments, the rotational speeds of the first servo motor 501 and the second servo motor 502 can also be different during rotation. When their speeds are different, as described in the rotation process above, the drive shaft 1 can achieve rotation. Since the speeds of the first servo motor 501 and the second servo motor 502 are different, the speeds of the first bushing 2 and the second bushing 3, which are driven to rotate by the first servo motor 501 and the second servo motor 502 respectively, are also different. At this time, the protrusion 32 and the groove 12 cooperate with each other, restricting the rotation of the drive shaft 1 (refer to the lifting process), and the drive shaft 1 will perform axial lifting motion. That is, the drive shaft 1 will have relative movement relative to the first bushing 2. At this time, the drive shaft 1 also has axial movement while rotating. Therefore, the switch test fixture detachably mounted on the drive shaft 1 performs curved motion.

[0051] Through the cooperation of drive shaft 1 with first bushing 2 and second bushing 3, the drive shaft 1 can be raised and lowered when the first servo motor 501 is working and the second servo motor 502 is not working; when the first servo motor 501 and the second servo motor 502 work simultaneously, the drive shaft 1 can be rotated. Furthermore, this lifting and rotating mechanism only requires a single shaft (drive shaft 1) to achieve both lifting and rotating functions, resulting in more accurate positioning during lifting and rotating. The overall structure is simple, reducing manufacturing costs, and the execution structure is simplified, thus improving efficiency.

[0052] See appendix Figure 4-5 As shown, a gas path conversion head 9 is disposed above the drive shaft 1. A rotating seat 91 is rotatably connected to the bottom of the gas path conversion head 9. The rotating seat 91 is fixed above the top of the drive shaft 1. A slide rail 14, parallel to and spaced apart from the drive shaft 1, is fixed to one side of the drive shaft 1. The gas path conversion head 9 is slidably connected to the slide rail 14. The gas path conversion head 9 is provided with at least one gas inlet 92. The bottom of the rotating seat 91 is provided with gas outlets (not shown in the figure) that communicate with each gas inlet 92. Each gas outlet is connected to a flexible air tube 93. The drive shaft 1 is under vacuum. A switch test fixture is detachably connected to the bottom of the drive shaft 1. The flexible air tube 93 passes downward through the interior of the drive shaft 1 and connects to the switch test fixture. A slider 90 is fixed to the top of the gas path conversion head 9. The slider 90 is slidably connected to the slide rail 14. By adopting a pneumatic rotary conversion structure, the rotating pneumatic interface is converted into a fixed pneumatic interface to ensure unobstructed airflow; an electro-pneumatic combined action is used, that is, the motor action and pneumatic control element are used simultaneously to achieve the requirements of a multi-functional switch testing device; by combining linear action and rotary action, the device can perform a variety of actions, improving its flexibility and applicability; and it is ensured that pneumatic structure entanglement and failure will not occur, so as to guarantee the normal operation of the system.

[0053] In this embodiment, the number of air inlets 92, air outlets, and flexible air tubes 93 corresponds one-to-one. Each air inlet 92, air outlet, and flexible air tube 93 can be single-path, dual-path, or multi-path. Each cylinder 613 is provided with an air inlet 615, and the end of each flexible air tube 93 passes downward through the interior of the drive shaft 1 and communicates with the air inlet. In this embodiment, there are four air inlets 615, corresponding to two cylinders 613 respectively. Correspondingly, there are four air inlets 92 and four air outlets, and four flexible air tubes 93, each communicating with one of the four air inlets 615.

[0054] In this embodiment, a connector 15 is fixed to the top of the drive shaft 1, and a turntable 16 is fixed to the bottom of the connector 15. Multiple longitudinally arranged connecting rods 17 are fixed between the turntable 16 and the rotating seat 91. Specifically, there are four connecting rods 17. This structure facilitates improved rotational stability between the rotating seat 91 and the drive shaft 1.

[0055] See attached document Figure 2 and 3 As shown, this embodiment also provides a control test method based on the above-mentioned multi-station switch test control system, which includes the following steps: S1. All servo systems in multiple workstation test modules are returned to their original state and reset. S2. Perform the first station test according to the preset test sequence. During the test, the servo motor operates in the first gear. During the test in step S2, the voltage of the servo system in the workstation test module needs to be detected. If the voltage detection meets the preset value, a current surge is performed. If it does not meet the preset value, it is determined whether the servo action is completed.

[0056] S3. After the test of the first gear is completed, determine whether the current gear is the preset gear. If not, increment the gear by one and return to step S2 above. If yes, the servo system returns to the original state and resets, increments the test station by one, and determines whether the incremented station is greater than the maximum station set by the system. If not, return to step S2 above. If yes, increment the count by one and compare the incremented count with the system's preset count. If they are equal, the test is completed. If not, return to step S2.

[0057] In step S2, the impact time of the current surge also needs to be determined. If the preset impact time is reached, then step S3 is performed; otherwise, the current surge is returned to continue.

[0058] In this embodiment, the multi-station switch test control system employs station test modules capable of simultaneous rotational and linear movement, enabling testing of switches such as rotary, button, push, rocker, and piano key switches. Furthermore, the presence of multiple station test modules, each connected to the PLC control unit 100, allows for synchronous, asynchronous, and differential testing of multiple samples. Additionally, the inclusion of a host computer 200 allows users to program, store, and recall data, flexibly performing tests based on actual conditions and accelerating testing efficiency.

[0059] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention is also intended to include these modifications and variations.

Claims

1. A multi-position switch test and control system, characterized in that: The multi-station switch test control system includes a PLC control unit, a host computer, and multiple station test modules. Each station test module includes a drive shaft, a first and second bushing sleeved on the drive shaft, a first and second servo motors located on the outside of the drive shaft, a switch test fixture detachably connected to the bottom of the drive shaft, and a switch fixing seat located below the switch test fixture for fixing the switch under test. The first bushing is driven by the first servo motor and screwed into the drive shaft to raise and lower the drive shaft. The second bushing is driven by the second servo motor and engages with the drive shaft to rotate the drive shaft. The host computer is communicatively connected to the PLC control unit, and the PLC control unit is communicatively connected to the multiple station test modules to control each station test module to perform switch test actions. The outer side wall of the drive shaft has an external thread, and the inner side wall of the first bushing has an internal thread that mates with the external thread. The external thread and the internal thread are screwed together. The outer side wall of the drive shaft has an axial groove, and the inner side wall of the second bushing has a protrusion that mates with the groove, and the protrusion is engaged in the groove.

2. The multi-station switch test control system according to claim 1, characterized in that: The workstation testing module also includes an isolation output unit, which is used to control the on / off state of the solenoid valve group and / or AC contactor.

3. The multi-station switch test control system according to claim 1 or 2, characterized in that: The multi-station switch test control system also includes a monitoring input unit for monitoring the status of each unit in the station test module, and the monitoring input unit is communicatively connected to the PLC control unit.

4. The multi-station switch test control system according to claim 3, characterized in that: The multi-station switch test and control system also includes a touch screen, which is communicatively connected to the PLC control unit.

5. The multi-station switch test control system according to claim 1, characterized in that: The first servo motor has a first drive wheel fixed at its bottom output end, a first driven wheel fixed at its first bushing, and a first synchronous belt connecting the first drive wheel and the first driven wheel; the second servo motor has a second drive wheel fixed at its bottom output end, a second driven wheel fixed at its second bushing, and a second synchronous belt connecting the second drive wheel and the second driven wheel.

6. The multi-station switch test control system according to claim 1, characterized in that: An air path conversion head is provided above the drive shaft. A rotating seat is rotatably connected to the bottom of the air path conversion head. The rotating seat is fixed above the top of the drive shaft. A slide rail is fixed on one side of the drive shaft and spaced parallel to the drive shaft. The air path conversion head is slidably connected to the slide rail. The air path conversion head is provided with at least one air path inlet. An air path outlet communicating with the air path inlet is provided at the bottom of the rotating seat. At least one flexible air tube is connected to the air path outlet. The drive shaft is under vacuum. The flexible air tube passes downward through the interior of the drive shaft and is connected to the switch test fixture.

7. A control and testing method based on the multi-station switch test and control system according to any one of claims 1-6, characterized in that: The control test method includes: S1. All servo systems in multiple workstation test modules are returned to their original state and reset. S2. Perform the first station test according to the preset test sequence. During the test, the servo motor operates in the first gear. S3. After the test of the first gear is completed, determine whether the current gear is the preset gear. If not, increment the gear by one and return to step S2 above. If yes, the servo system returns to the original state and resets, increments the test station by one, and determines whether the incremented station is greater than the maximum station set by the system. If not, return to step S2 above. If yes, increment the count by one and compare the incremented count with the system's preset count. If they are equal, the test is completed. If not, return to step S2.

8. The control and testing method for the multi-station switch test and control system according to claim 7, characterized in that: During the test in step S2, the voltage of the servo system in the workstation test module needs to be detected. If the voltage detection meets the preset value, a current surge is performed. If it does not meet the preset value, it is determined whether the servo action is completed.

9. The control and testing method for the multi-station switch test and control system according to claim 8, characterized in that: In step S2, the impact time of the current surge also needs to be determined. If the preset impact time is reached, then step S3 is performed; otherwise, the current surge is returned to continue.

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