Motor forward and reverse rotation control testing device
By using a simple motor forward and reverse rotation control test device, and combining a test module and a switch module, the automatic control of motor forward and reverse rotation is realized, which solves the problems of high cost and complex maintenance in the existing technology and is suitable for batch testing.
Patent Information
- Application Number
- CN202520284489.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing motor forward and reverse rotation control devices are costly, complex to maintain, and difficult to automate, thus failing to meet the needs of large-scale testing.
A simple motor forward and reverse rotation control test device is adopted. By combining test modules and switch modules, the automatic control of motor forward and reverse rotation is realized, and the peripheral circuit is built using common electronic components.
It achieves fully automated control of motor forward and reverse rotation, reduces costs, improves reliability and ease of maintenance, and is suitable for batch testing.
Smart Images
Figure CN223624547U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor testing technology, specifically to a motor forward and reverse rotation control testing device. Background Technology
[0002] To enable the camera to capture images both day and night, different wavelengths of light need to be introduced into the chip by changing the filter. In existing technology, a motor is typically used as the power source to switch between the two filters, and the switching is achieved by the forward and reverse rotation of the motor. Therefore, motor direction control is essential.
[0003] Currently, motor driver ICs can be used to automate motor direction control. However, this method requires a purchase price, and factors such as IC inventory, transportation, and surface mount technology (SMT) can hinder project progress. Furthermore, normal equipment operation relies on manufacturer-specific drivers and software debugging; troubleshooting requires professional personnel, and subsequent maintenance is difficult. Alternatively, bidirectional physical switches can be used for manual control, but automation is not possible, making it unsuitable for large-scale testing. Utility Model Content
[0004] In order to overcome the defects in the existing technology, the purpose of this utility model is to provide a motor forward and reverse rotation control test device that is simple in structure, highly reliable, and low in cost.
[0005] To achieve the above-mentioned objectives of this utility model, this utility model provides a motor forward and reverse rotation control testing device, comprising:
[0006] The test module includes a first control signal output terminal and a second control signal output terminal. The first control signal output terminal is electrically connected to the forward rotation terminal of the motor, and the second control signal output terminal is electrically connected to the reverse rotation terminal of the motor.
[0007] The first switch module is electrically located between the reverse terminal of the motor and ground, and the normally open control terminal of the first switch module is electrically connected to the first control signal output terminal of the test module.
[0008] The second switch module is electrically located between the forward rotation terminal of the motor and ground, and the normally open control terminal of the second switch module is electrically connected to the second control signal output terminal of the test module.
[0009] The first control signal output terminal and the second control signal output terminal of the test module simultaneously output logically opposite signals to detect the forward and reverse rotation of the motor.
[0010] Optionally, the first control signal output terminal outputs a first PWM signal, and the second control signal output terminal outputs a second PWM signal, wherein the phase difference between the first PWM signal and the second PWM signal is 180°.
[0011] Optionally, the first switching module is a first NPN transistor, the base of the first NPN transistor is electrically connected to the first control signal output terminal of the test module, the collector of the first NPN transistor is electrically connected to the reverse terminal of the motor, and its emitter is grounded.
[0012] The second switching module is a second NPN transistor. The base of the second NPN transistor is electrically connected to the second control signal output terminal of the test module, the collector of the second NPN transistor is electrically connected to the forward rotation terminal of the motor, and its emitter is grounded.
[0013] Optionally, the first switch module is a first relay, the coil of the first relay is electrically connected to the first control signal output terminal of the test module, and the normally open contact of the first relay is electrically located between the reverse terminal of the motor and ground.
[0014] The second switch module is a second relay. The coil of the second relay is electrically connected to the second control signal output terminal of the test module. The normally open contact of the second relay is electrically located between the forward rotation terminal of the motor and ground.
[0015] Optionally, the first control signal output terminal of the test module is electrically connected to the positive terminal of the first diode, and the negative terminal of the first diode is electrically connected to the forward rotation terminal of the motor.
[0016] The second control signal output terminal of the test module is electrically connected to the positive terminal of the second diode, and the negative terminal of the second diode is electrically connected to the reverse terminal of the motor.
[0017] Optionally, a first resistor is connected in series between the normally open control terminal of the first switch module and the first control signal output terminal of the test module.
[0018] A second resistor is connected in series between the normally open control terminal of the second switch module and the second control signal output terminal of the test module.
[0019] Optionally, a third resistor is connected in series between the first switch module and ground, and a fourth resistor is connected in series between the second switch module and ground.
[0020] Optionally, a fifth resistor is connected between the base of the first NPN transistor and ground, and a sixth resistor is connected between the base of the second NPN transistor and ground.
[0021] Optionally, the test module is a test fixture box.
[0022] The beneficial effects of this utility model are:
[0023] This invention uses a small number of common electronic components to build the peripheral circuit, and with the help of a conventional test fixture, it can realize the forward and reverse rotation test control of the motor. It has the characteristics of simple structure, high reliability, low cost and simple maintenance, and can meet the needs of batch testing.
[0024] This invention enables bidirectional power supply to both the forward and reverse ends of a motor in the detection of forward and reverse rotation, with each end operating independently and without interference; it also achieves full automation of controlling the bidirectional switching of the motor's forward and reverse rotation.
[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0027] Figure 1 This is the circuit schematic diagram of Example 1. Detailed Implementation
[0028] The embodiments of this utility model 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 are only used to explain this utility model, and should not be construed as limiting this utility model.
[0029] In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0030] Example 1
[0031] like Figure 1 As shown, this utility model provides a motor forward and reverse rotation control test device, including: test module J1, first switch module and second switch module.
[0032] The test module J1 can be a conventional, existing test fixture, which includes a first control signal output terminal and a second control signal output terminal. In this embodiment, the test fixture is model MU950. The first control signal output terminal is pin 12 of the MU950, and the second control signal output terminal is pin 20 of the MU950. The first control signal output terminal is electrically connected to the forward rotation terminal of the motor M, and the second control signal output terminal is electrically connected to the reverse rotation terminal of the motor M. A first switch module is electrically located between the reverse rotation terminal of the motor M and ground, and its normally open control terminal is electrically connected to the first control signal output terminal of the test module J1. The second switch module is electrically located between the forward rotation terminal of the motor M and ground, and its normally open control terminal is electrically connected to the second control signal output terminal of the test module J1.
[0033] To prevent current crosstalk and backflow, a first diode D1 is connected to the first control signal output terminal of test module J1, and a second diode D2 is connected to the second control signal output terminal of test module J1. In this embodiment, the positive terminal of the first diode D1 is electrically connected to the first control signal output terminal of test module J1, and the negative terminal of the first diode D1 is electrically connected to the forward rotation terminal of the motor M; the positive terminal of the second diode D2 is electrically connected to the second control signal output terminal of test module J1, and the negative terminal of the second diode D2 is electrically connected to the reverse rotation terminal of the motor M.
[0034] In this embodiment, a first resistor R1 is connected in series between the normally open control terminal of the first switch module and the first control signal output terminal of the test module J1; a second resistor R2 is connected in series between the normally open control terminal of the second switch module and the second control signal output terminal of the test module J1.
[0035] To prevent the first control signal output terminal and the second control signal output terminal of test module J1 from being short-circuited to ground, a third resistor R3 is connected in series between the first switch module and ground, and a fourth resistor R4 is connected in series between the second switch module and ground.
[0036] During testing, the first and second control signal output terminals of test module J1 output logically opposite signals to detect the forward and reverse rotation of motor M. Specifically: Test module J1 controls its first control signal output terminal to output a high-level signal, while simultaneously controlling its second control signal output terminal to output a low-level signal. At this time, the forward rotation terminal of motor M is connected to a high-level signal, the first switch module is closed, the second switch module is open, and the reverse rotation terminal of motor M is grounded, thus initiating the forward rotation detection of motor M; Test module J1 controls its first control signal output terminal to output a low-level signal, while simultaneously controlling its second control signal output terminal to output a high-level signal. At this time, the reverse rotation terminal of motor M is connected to a high-level signal, the first switch module is open, the second switch module is closed, and the forward rotation terminal of motor M is grounded, thus initiating the reverse rotation detection of motor M.
[0037] In this embodiment, the switching module is preferably, but not limited to, an NPN transistor, i.e., the first switching module is a first NPN transistor Q1, and the second switching module is a second NPN transistor Q2. The base of the first NPN transistor Q1 is connected to the cathode of the first diode D1, realizing an electrical connection with the first control signal output terminal of the test module J1. The collector of the first NPN transistor Q1 is electrically connected to the reverse terminal of the motor M. Its emitter is connected to ground after being connected in series with a third resistor R3. A fifth resistor R5 is also connected between the base of the first NPN transistor Q1 and ground to ensure that the base of the first NPN transistor Q1 remains at a low level when not being detected, thus preventing the first NPN transistor Q1 from conducting. The base of the second NPN transistor Q2 is connected to the negative terminal of the second diode D2, thus achieving an electrical connection with the second control signal output terminal of the test module J1. The collector of the second NPN transistor Q2 is electrically connected to the forward rotation terminal of the motor M. Its emitter is connected in series with the fourth resistor R4 and then grounded. The base of the second NPN transistor Q2 is also connected to the ground with a sixth resistor R6 to ensure that the base of the second NPN transistor Q2 remains at a low level when not being tested, thus preventing the second NPN transistor Q2 from conducting.
[0038] When the motor M is being tested for forward rotation, the first control signal output terminal of the test module J1 outputs a high-level signal, while the second control signal output terminal outputs a low-level signal. At this time, the forward rotation terminal of the motor M is connected to the high-level signal, the first NPN transistor Q1 is turned on, the second NPN transistor Q2 is turned off, the reverse rotation terminal of the motor M is grounded, and the forward rotation test of the motor M begins.
[0039] When motor M is tested in reverse, the first control signal output terminal of test module J1 outputs a low-level signal, and the second control signal output terminal outputs a high-level signal. At this time, the reverse terminal of motor M is connected to the high-level signal, the second NPN transistor Q2 is turned on, the first NPN transistor Q1 is turned off, the forward terminal of motor M is grounded, and the reverse test of motor M begins.
[0040] In this embodiment, the logically opposite signals simultaneously output by the first control signal output terminal and the second control signal output terminal of the test module J1 are preferably, but not limited to, PWM signals with a phase difference of 180°. That is, the signal output by the first control signal output terminal of the test module J1 is the first PWM signal, and the signal output by the second control signal output terminal is the second PWM signal. The first PWM signal and the second PWM signal are output simultaneously with a phase difference of 180°.
[0041] In practice, the first NPN transistor Q1 and the second NPN transistor Q2 can also be replaced with MOSFETs.
[0042] Example 2
[0043] This embodiment is basically the same as Embodiment 1, except that a relay is used as the switching module. Specifically: the first switching module is a first relay, the second switching module is a second relay, the coil of the first relay is electrically connected to the first control signal output terminal of the test module J1, the normally open contact of the first relay is electrically located between the reverse terminal of the motor M and ground, and a third resistor R3 is connected in series between the normally open contact of the first relay and ground; the coil of the second relay is electrically connected to the second control signal output terminal of the test module J1, the normally open contact of the second relay is electrically located between the forward terminal of the motor M and ground, and a fourth resistor R4 is connected in series between the normally open contact of the second relay and ground.
[0044] When the motor M is being tested for forward rotation, the first control signal output terminal of the test module J1 outputs a high-level signal, while the second control signal output terminal outputs a low-level signal. At this time, the forward rotation terminal of the motor M is connected to the high-level signal, the coil of the first relay is energized, its normally open contact closes, the normally open contact of the second relay opens, the reverse rotation terminal of the motor M is grounded, and the forward rotation test of the motor M begins.
[0045] When motor M is tested in reverse, the first control signal output terminal of test module J1 outputs a low-level signal, and the second control signal output terminal outputs a high-level signal. At this time, the reverse terminal of motor M is connected to the high-level signal, the coil of the second relay is energized, its normally open contact closes, the normally open contact of the first relay opens, the forward terminal of motor M is grounded, and the reverse test of motor M begins.
[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A test device for controlling the forward and reverse rotation of a motor, characterized in that, include: The test module includes a first control signal output terminal and a second control signal output terminal. The first control signal output terminal is electrically connected to the forward rotation terminal of the motor, and the second control signal output terminal is electrically connected to the reverse rotation terminal of the motor. The first switch module is electrically located between the reverse terminal of the motor and ground, and the normally open control terminal of the first switch module is electrically connected to the first control signal output terminal of the test module. The second switch module is electrically located between the forward rotation terminal of the motor and ground, and the normally open control terminal of the second switch module is electrically connected to the second control signal output terminal of the test module. The first control signal output terminal and the second control signal output terminal of the test module simultaneously output logically opposite signals to detect the forward and reverse rotation of the motor.
2. The motor forward and reverse rotation control test device according to claim 1, characterized in that, The first control signal output terminal outputs a first PWM signal, and the second control signal output terminal outputs a second PWM signal. The phase difference between the first PWM signal and the second PWM signal is 180°.
3. The motor forward and reverse rotation control test device according to claim 1, characterized in that, The first switching module is a first NPN transistor. The base of the first NPN transistor is electrically connected to the first control signal output terminal of the test module, the collector of the first NPN transistor is electrically connected to the reverse terminal of the motor, and its emitter is grounded. The second switching module is a second NPN transistor. The base of the second NPN transistor is electrically connected to the second control signal output terminal of the test module, the collector of the second NPN transistor is electrically connected to the forward rotation terminal of the motor, and its emitter is grounded.
4. The motor forward and reverse rotation control test device according to claim 1, characterized in that, The first switch module is a first relay. The coil of the first relay is electrically connected to the first control signal output terminal of the test module. The normally open contact of the first relay is electrically located between the reverse terminal of the motor and ground. The second switch module is a second relay. The coil of the second relay is electrically connected to the second control signal output terminal of the test module. The normally open contact of the second relay is electrically located between the forward rotation terminal of the motor and ground.
5. The motor forward and reverse rotation control test device according to claim 1, characterized in that, The first control signal output terminal of the test module is electrically connected to the positive terminal of the first diode, and the negative terminal of the first diode is electrically connected to the forward rotation terminal of the motor. The second control signal output terminal of the test module is electrically connected to the positive terminal of the second diode, and the negative terminal of the second diode is electrically connected to the reverse terminal of the motor.
6. The motor forward and reverse rotation control test device according to claim 1, characterized in that, A first resistor is connected in series between the normally open control terminal of the first switch module and the first control signal output terminal of the test module; A second resistor is connected in series between the normally open control terminal of the second switch module and the second control signal output terminal of the test module.
7. The motor forward and reverse rotation control test device according to claim 1, characterized in that, A third resistor is connected in series between the first switch module and ground, and a fourth resistor is connected in series between the second switch module and ground.
8. The motor forward and reverse rotation control test device according to claim 3, characterized in that, A fifth resistor is connected between the base of the first NPN transistor and ground, and a sixth resistor is connected between the base of the second NPN transistor and ground.
9. The motor forward and reverse rotation control test device according to claim 1, characterized in that, The test module is a test fixture box.