Single-pole stepping motor electric actuator testing device

Abstract

The utility model relates to the technical field of motor control testing, in particular to a single-pole stepping motor electric actuator testing device, which is connected with a single-pole stepping motor electric actuator and an external power supply, the external power supply supplies power to the testing device, and the testing device controls the single-pole stepping motor electric actuator to operate and acquires operating parameters of the single-pole stepping motor electric actuator. And comparing the obtained operation parameters with preset parameters to judge whether the single-pole stepping motor electric actuator meets the design requirements or not. According to the technical scheme, the feedback signals of the digital angle sensor and the single-pole stepping motor electric actuator are compared with the preset parameters, whether the actuator meets the design requirement or not can be accurately judged, and the test accuracy is improved; and the voltage detection module and the current detection module monitor voltage and current in real time, and timely protection is carried out when abnormity occurs, so that the equipment is prevented from being damaged, and the service life of the equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor control test technical field, concretely relates to a single pole step motor electric actuator testing arrangement. BACKGROUND

[0002] The existing single pole step motor electric actuator testing arrangement has many deficiencies. In the test mode, it mainly relies on mechanical device test and indicates the running angle of the electric actuator, and can only judge whether the electric actuator can run and whether the feedback signal is in the normal range. In terms of function, it is not comprehensive, lacks digital angle measurement function, cannot compare with the feedback signal in real time, and has no abnormal alarm function; at the same time, it lacks voltage protection and overcurrent protection mechanism, has no display function, and it is difficult to accurately locate the problem point when the test fails, cannot accurately control the running speed and running step number of the actuator, and cannot realize automatic and efficient test. From the performance parameters, the mechanical angle indication accuracy is poor, lacks digital angle sensor, cannot realize real-time angle comparison; lacks voltage and current measurement, cannot realize accurate test, and has no protection function; can only test at a specific speed, lacks speed regulation and step counting function; has no display and sound prompt function, which makes it impossible to determine the test parameters of each link during the test process, and it is difficult to determine the problem once the test fails. SUMMARY

[0003] The utility model aims at at least one of the technical problems in the related art. Therefore, the utility model aims at providing a single pole step motor electric actuator testing arrangement to solve the problems of incomplete function, inaccurate test, lack of protection function and inability to automatically and efficiently test in the existing testing arrangement.

[0004] The purpose of the utility model can be realized by the following technical scheme:

[0005] A single pole step motor electric actuator testing arrangement, the testing arrangement is connected with the single pole step motor electric actuator and the external power supply, the external power supply supplies power to the testing arrangement, the testing arrangement controls the running of the single pole step motor electric actuator and obtains the running parameters thereof, and the obtained running parameters are compared with the preset parameters to determine whether the single pole step motor electric actuator meets the design requirements;

[0006] The testing arrangement comprises a power module, a control unit, an input and output unit and a single pole step motor driving module, the control unit comprises an MCU, a voltage detection module, a current detection module and a digital angle sensor, and the input and output unit comprises a key input module, a display screen module and a buzzer module.

[0007] The driving source of the single-pole stepping motor electric actuator is a single-pole stepping motor, and a driving circuit of the single-pole stepping motor comprises a resistor, a driving chip, a signal interface and four MOSFETs.

[0008] In some embodiments of the utility model, the power module includes a 5V LDO module, and the power module is connected with an external power supply and an MCU respectively, and the power module is used for converting the power supply of the external power supply into 5V and transmitting the power supply to the MCU for power supply.

[0009] In some embodiments of the utility model, the voltage detection module is connected with the power module and the MCU respectively, and the voltage detection module detects the power supply voltage and transmits the voltage signal to the MCU for detection.

[0010] In some embodiments of the utility model, the key input module is connected with the MCU, and the key input module is used for controlling external signal input.

[0011] In some embodiments of the utility model, the buzzer module is connected with the MCU, and the buzzer module is used for outputting a prompt sound of a test result.

[0012] In some embodiments of the utility model, the single-pole stepping motor driving module is connected with the MCU and the single-pole stepping motor electric actuator respectively, the MCU outputs a control signal to control the opening and closing of the single-pole stepping motor driving module, and then the single-pole stepping motor driving module drives the single-pole stepping motor in the single-pole stepping motor electric actuator to operate, and finally drives the single-pole stepping motor electric actuator to operate.

[0013] In some embodiments of the utility model, the current detection module is connected with the MCU and the single-pole stepping motor driving module respectively, and the current detection module is used for detecting a current signal used for driving the single-pole stepping motor in the single-pole stepping motor driving module and transmitting the current signal to the MCU.

[0014] In some embodiments of the utility model, the display screen module is connected with the MCU, and the display screen module is used for displaying test parameters, test process data and test results.

[0015] In some embodiments of the utility model, the single-pole stepping motor electric actuator is connected with the MCU, and the single-pole stepping motor electric actuator is used for transmitting a feedback signal of the electric actuator body to the MCU.

[0016] In some embodiments of the utility model, the digital angle sensor is connected with the MCU and the single-pole stepping motor electric actuator respectively, the digital angle sensor obtains a real-time operation angle of the single-pole stepping motor electric actuator and transmits the real-time operation angle to the MCU, and is used for comparison, calculation and judgment of a test result.

[0017] The utility model discloses beneficial effect:

[0018] Compared with the traditional method, the technical scheme can accurately judge whether the actuator meets the design requirement, improve the accuracy of the test by the feedback signal of the digital angle sensor and the single pole stepping motor electric actuator, and the preset parameter comparison, and the voltage detection module and the current detection module real -time monitoring voltage and current, when the abnormality appears, timely protection, prevent equipment damage, prolong equipment life, the test device can monitor and analyze the running angle, speed, current and multiple parameters of the single pole stepping motor electric actuator, satisfy different test demand, overall evaluation actuator performance. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model makes further explanation from the utility model below combining the annex diagram.

[0020] Figure 1 It is the connection schematic drawing of test device, single pole stepping motor electric actuator and external power supply in the utility model,

[0021] Figure 2 It is the control circuit connection schematic drawing of test device in the utility model,

[0022] Figure 3 It is the drive circuit schematic drawing of single pole stepping motor in the utility model.

[0023] In the drawing: 1, external power supply, 2, power module, 3, voltage detection module, 4, button input module, 5, buzzer module, 6, MCU, 7, single pole stepping motor drive module, 8, current detection module, 9, display screen module, 10, single pole stepping motor electric actuator, 11, digital angle sensor, 12, test device. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of the utility model protection.

[0025] As Figure 1 , Figure 2 Shown, a single pole stepping motor electric actuator test device, test device 12 is connected with single pole stepping motor electric actuator 10 and external power supply 1, and external power supply 1 supplies power for test device 12, and test device 12 controls single pole stepping motor electric actuator 10 to run and obtains its running parameter, and the obtained running parameter is compared with preset parameter to judge whether single pole stepping motor electric actuator 10 meets the design requirement.

[0026] The test device 12 comprises a power module 2, a control unit, an input and output unit and a unipolar stepping motor drive module 7, the control unit comprises an MCU 6, a voltage detection module 3, a current detection module 8 and a digital angle sensor 11, and the input and output unit comprises a key input module 4, a display screen module 9 and a buzzer module 5.

[0027] After the external power supply 1 supplies power to the test device 12, the user inputs control instructions, such as starting testing and setting testing parameters, to the MCU 6 through the key input module 4; after the MCU 6 receives the instructions, the unipolar stepping motor drive module 7 is controlled to be turned on, and the unipolar stepping motor electric actuator 10 is driven to operate; in the operating process, the voltage detection module 3 monitors the supply voltage, the current detection module 8 monitors the motor drive current, the digital angle sensor 11 obtains the operating angle of the actuator, and the unipolar stepping motor electric actuator 10 also transmits feedback signals to the MCU 6; the MCU 6 continuously collects these data and compares and analyzes the data with preset parameters; after testing is completed, the MCU 6 controls the display screen module 9 to display the test results and controls the buzzer module 5 to emit corresponding prompt sounds, so as to inform the user whether the test is passed.

[0028] In some embodiments of the utility model, the power module 2 integrates a 5V LDO module, which has the ability to convert the power supply of the external power supply 1 into stable 5V voltage. One end of the power module 2 is connected with the external power supply 1, and the other end is connected with the MCU 6, so as to transmit the converted 5V voltage to the MCU 6 and stably supply power to the MCU 6. Such a design can ensure that the MCU 6 works in a stable voltage environment and avoid affecting the performance and stability of the test device 12 due to voltage fluctuation. At the same time, the 5V LDO module has the characteristics of low voltage difference and high stability, can effectively reduce the energy loss in the power conversion process, and improve the power utilization efficiency.

[0029] In some embodiments of the utility model, the voltage detection module 3 is connected with the power module 2 and the MCU 6. The working principle of the voltage detection module 3 is to monitor the supply voltage output by the power module 2 in real time, collect voltage signals through the internal voltage sampling circuit; then, transmit the collected voltage signals to the MCU 6; the MCU 6 has a normal voltage range preset inside, and after receiving the voltage signals, compares the voltage signals with the preset range. If the voltage exceeds the normal range, the MCU 6 can take corresponding measures in time, such as controlling the buzzer module 5 to issue an alarm or controlling the unipolar stepping motor drive module 7 to stop working, so as to protect the test device 12 and the tested unipolar stepping motor electric actuator 10 and prevent equipment damage caused by overvoltage or undervoltage.

[0030] As an example, the circuit of the voltage detection module 3 mainly consists of a voltage stabilizing diode, a resistor and a capacitor, and the main function of the circuit is to detect the input voltage of the test device 12, and has an overvoltage and undervoltage protection function.

[0031] In some embodiments of the utility model, the key input module 4 is connected with the MCU 6, and the key input module 4 is used to control the external signal input and the adjustment of control parameters and the start and stop of testing.

[0032] As an example, the circuit of the key input module 4 mainly consists of a key and a resistor, and the main function of the circuit is external signal input, and different voltage values are detected by the MCU 6 through different keys being pressed to distinguish different key signals, and each key is used to adjust test parameters and control the start or end of testing. The key input module 4 is usually composed of multiple function keys, such as a start test key, a stop test key, a parameter setting key and the like. When different keys are pressed by the user, the key input module 4 will generate corresponding electrical signal changes, and these changes are recognized by the MCU 6. For example, when the start test key is pressed, the MCU 6 receives the signal and starts the entire test process, and controls the single-phase stepping motor driving module 7 to start working. When the parameter setting key is pressed, the user can adjust the preset parameters required for testing, such as motor running speed and running step number, through key operation, and a flexible control mode is provided for different testing requirements

[0033] In some embodiments of the utility model, the buzzer module 5 is connected with the MCU 6 and is controlled by the MCU 6. During the testing process, when the testing is completed, the MCU 6 sends an instruction to the buzzer module 5 according to the test result. If the test result shows that the single-phase stepping motor electric actuator 10 meets the design requirements, the MCU 6 controls the buzzer module 5 to emit a short sound prompt. If the test fails, the MCU 6 controls the buzzer module 5 to emit continuous long sound or different frequency sound combinations to prompt the user that there is a problem in testing. This sound prompting mode can enable the user to quickly know the test result even if the user is far away from the display screen module 9, and the convenience and efficiency of testing are improved.

[0034] As an example, the circuit of the buzzer module 5 mainly consists of a voltage stabilizing diode, a transistor, a resistor and a buzzer, and the main function of the circuit is that the MCU 6 controls the buzzer to emit sound with different frequencies and rhythms to prompt the test result.

[0035] In some embodiments of the utility model, unipolar stepping motor drive module 7 respectively with MCU 6 and unipolar stepping motor electric actuator 10 are connected, and MCU 6 output control signal controls the turn-on and turn-off of unipolar stepping motor drive module 7, and then drives the unipolar stepping motor in unipolar stepping motor electric actuator 10 to run through unipolar stepping motor drive module 7, finally drives unipolar stepping motor electric actuator 10 to run.

[0036] As an example, MCU 6 controls the turn-on and turn-off of unipolar stepping motor drive module 7 by outputting specific pulse control signals.When unipolar stepping motor drive module 7 is turned on, its internal circuit will provide appropriate current and voltage for unipolar stepping motor according to certain logic, and drive unipolar stepping motor to run.The running of unipolar stepping motor drives unipolar stepping motor electric actuator 10 to run, realizing the driving test of actuator.The design of this module makes the control of motor running more accurate, can accurately control the speed, direction and running steps of motor according to the instruction of MCU 6, and meets the accurate requirements of motor running in different test scenes.

[0037] As shown in Figure 3 The driving source of unipolar stepping motor electric actuator is single-stage stepping motor, and unipolar stepping motor drive circuit mainly consists of resistance, drive chip, signal interface and four MOSFET, drive chip is used for receiving the control signal group of MCU, and the main function of this circuit is that MCU 6 outputs control signal, and four MOSFET is turned on and turned off, four MOSFET constitutes unipolar stepping motor drive circuit, and drive circuit can drive the unipolar stepping motor in unipolar stepping motor electric actuator 10 to run, thereby realizing the running of electric actuator.

[0038] In some embodiments of the utility model, current detection module 8 is connected with MCU 6 and unipolar stepping motor drive module 7 respectively, and current detection module 8 is used for detecting the current signal used for driving unipolar stepping motor in unipolar stepping motor drive module 7 and transmitting to MCU 6.

[0039] Further refining the above scheme, the circuit of the current detection module 8 is mainly composed of operational amplifier, resistor and capacitor. The main function of the circuit is to detect the bus current, and has overcurrent, overload and dry running protection functions. The current detection module 8 sets a precision sampling resistor in the current loop of the unipolar stepping motor driving module 7, and detects the current signal used to drive the unipolar stepping motor by using the voltage drop across the resistor. After the detected current signal is amplified, filtered and processed, it is transmitted to the MCU 6. The MCU 6 also pre-sets a normal current range. When an abnormal current such as overcurrent or short circuit is detected, the MCU 6 will quickly respond to control the unipolar stepping motor driving module 7 to stop working, thereby avoiding damage to the motor and the test device 12 caused by excessive current, and ensuring the safety of the test process.

[0040] In some embodiments of the present application, the display screen module 9 is connected with the MCU 6, and the display screen module 9 is used to display test parameters, test process data and test results.

[0041] It should be noted that before testing, the user can set test parameters through the key input module 4. These parameters will be displayed in real time on the display screen module 9, which is convenient for the user to confirm and modify. During the test process, the display screen module 9 will dynamically display the running parameters of the unipolar stepping motor electric actuator 10, such as real-time running angle, speed, current, etc., so that the user can intuitively understand the test progress. After the test is completed, the display screen module 9 will clearly display the test results, and if the test fails, it will also display the reason for failure and specific problem points, which provides convenience for the user to analyze test data and find problems.

[0042] In some embodiments of the present application, the unipolar stepping motor electric actuator 10 is connected with the MCU 6, and the unipolar stepping motor electric actuator 10 is used to transmit feedback signals of the electric actuator body to the MCU 6 and compare them with the data of the digital angle sensor 11 in the test device 12. These feedback signals contain actual running state information of the motor, such as actual position and running speed of the motor. After receiving the feedback signals, the MCU 6 compares and analyzes them with the preset parameters and the angle data obtained by the digital angle sensor 11, so as to judge whether the running of the unipolar stepping motor electric actuator 10 meets the design requirements, thereby providing an important basis for the determination of test results.

[0043] In some embodiments of the present application, the digital angle sensor 11 is connected with the MCU 6 and the unipolar stepping motor electric actuator 10 respectively, and the digital angle sensor 11 obtains the real-time running angle of the unipolar stepping motor electric actuator 10 and transmits it to the MCU 6, which is used for comparison, calculation and judgment of test results.

[0044] As an example, the digital angle sensor 11 acquires the real-time running angle of the single-phase stepping motor electric actuator 10 in real time through an internal angle measuring element. The digital angle sensor 11 transmits the measured angle data to the MCU 6 in the form of a digital signal. The MCU 6 compares and calculates the data with the signals fed back by the single-phase stepping motor electric actuator 10 to determine the accuracy and precision of the motor running. For example, if the angle measured by the digital angle sensor 11 deviates greatly from the feedback angle of the actuator, it indicates that the actuator may have abnormal running, and the MCU 6 makes a corresponding judgment accordingly, thereby improving the accuracy and reliability of the test results.

[0045] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above is only an example and description of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the scope of the present application or exceed the scope defined by the present claims.

Claims

1. A single pole stepper motor electric actuator test apparatus, characterized by, The test device is connected with a single-phase stepping motor electric actuator and an external power supply, the external power supply supplies power for the test device, the test device controls the single-phase stepping motor electric actuator to operate and acquires operating parameters of the single-phase stepping motor electric actuator, and the acquired operating parameters are compared with preset parameters to determine whether the single-phase stepping motor electric actuator meets design requirements; The test device comprises a power module, a control unit, an input and output unit and a single-phase stepping motor driving module, the control unit comprises an MCU, a voltage detection module, a current detection module and a digital angle sensor, and the input and output unit comprises a key input module, a display screen module and a buzzer module. The driving source of the single-phase stepping motor electric actuator is a single-phase stepping motor, and a driving circuit of the single-phase stepping motor comprises a resistor, a driving chip, a signal interface and four MOSFETs, and the driving chip is used for receiving a control signal of the MCU.

2. A single-phase stepper motor electro-actuator testing apparatus according to claim 1, characterized in that, The power module comprises a 5V LDO module, and the power module is connected with the external power supply and the MCU respectively, and is used for converting power supply of the external power supply into 5V and transmitting the power supply to the MCU for power supply.

3. A single-phase stepper motor electro-actuator testing apparatus as claimed in claim 1, wherein, The voltage detection module is connected with the power module and the MCU respectively, detects the power supply voltage, and transmits a voltage signal to the MCU for detection.

4. A single-phase stepper motor electro-actuator testing apparatus as claimed in claim 1, wherein, The key input module is connected with the MCU, and is used for controlling external signal input.

5. A single-phase stepper motor electro-actuator testing apparatus as claimed in claim 1, wherein, The buzzer module is connected with the MCU, and is used for outputting a prompt sound of a test result.

6. A single-phase stepper motor electro-actuator testing apparatus as claimed in claim 1, wherein, The single-phase stepping motor driving module is connected with the MCU and the single-phase stepping motor electric actuator respectively, the MCU outputs a control signal to control opening and closing of the single-phase stepping motor driving module, and then drives the single-phase stepping motor in the single-phase stepping motor electric actuator to operate through the single-phase stepping motor driving module, and finally drives the single-phase stepping motor electric actuator to operate.

7. A single-phase stepper motor electro-actuator testing apparatus as claimed in claim 1, wherein, The current detection module is connected with the MCU and the single-phase stepping motor driving module respectively, and is used for detecting a current signal used for driving the single-phase stepping motor in the single-phase stepping motor driving module and transmitting the current signal to the MCU.

8. A single-phase stepper motor electro-actuator testing apparatus as claimed in claim 1, wherein, The display screen module is connected with the MCU, and is used for displaying test parameters, test process data and test results.

9. A single-phase stepper motor electro-actuator testing apparatus as claimed in claim 1, wherein, The single-phase stepping motor electric actuator is connected with the MCU, and is used for transmitting a feedback signal of a body of the electric actuator to the MCU.

10. A single-phase stepper motor electro-actuator testing apparatus as claimed in claim 1, wherein, The digital angle sensor is connected with the MCU and the single-phase stepping motor electric actuator respectively, acquires a real-time operating angle of the single-phase stepping motor electric actuator and transmits the real-time operating angle to the MCU, and is used for comparison, calculation and judgment of a test result.

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