CN219176614U

CN219176614U - Brushless fan tester

Info

Publication number: CN219176614U
Application number: CN202222559881.3U
Authority: CN
Inventors: 刘忠平
Original assignee: Chongqing Baikui Technology Co ltd
Current assignee: Chongqing Baikui Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-06-13
Anticipated expiration: 2032-09-27

Abstract

The utility model discloses a brushless fan tester, and belongs to the technical field of testing instruments. The utility model comprises a shell, a main board, keys, binding posts, aviation plugs and a display screen, wherein the binding posts comprise positive and negative binding posts, PWM binding posts and FG binding posts, and the wiring mode is high in universality. The positive and negative electrode binding posts are connected with the voltage regulating module, the PWM binding posts and the FG binding posts are connected with the MCU processor of the main board, and the keys and the display screen are electrically connected with the MCU processor. The utility model integrates the existing current speed measurement, FG speed measurement and infrared speed measurement, and can automatically adjust the voltage to be 0-53V output through the voltage adjusting module, and can directly supply power to the fan; the fans supporting 2 lines, 3 lines and 4 lines are used for measuring the speed. The utility model can detect and display the rotation speed, current, power, current waveform and FG waveform simultaneously, and can set alarm values for the rotation speed, current and voltage, thereby greatly improving the production test efficiency of the fan and effectively controlling the production quality.

Description

Brushless fan tester

Technical Field

The utility model belongs to the technical field of test instruments, and particularly relates to a brushless fan tester.

Background

The current fan tester mainly comprises the following components: 1. the waveform of the current wave is tested, and the rotating speed is displayed through shaping, amplifying and analog-digital conversion, so that the advantages are that: the fan can be tested by being powered on without any other auxiliary equipment; the disadvantages are: the waveform is not conventional and cannot be tested, and the waveform with the PWM function cannot be tested, so that the waveform is only suitable for 70% of models on the market. 2. The infrared speed measurement is carried out by sticking reflective paper on the fan blade to carry out photosensitive test rotation speed. The advantages are that: whatever fan may be tested; the disadvantages are: and the reflective paper needs to be pasted, so that the efficiency is affected. 3. FG tests the speed, calculates and obtains the rotational speed through the FG signal of fan itself, and the advantage is: the efficiency is certain; the disadvantages are: the fan itself has FG signals, and the versatility is poor.

Therefore, a brushless fan tester is provided to solve the problems of poor universality, few functions and the like of the existing fan tester.

Disclosure of Invention

The utility model aims to provide a brushless fan tester, which aims to solve the problems of poor universality, few functions and the like of the existing fan tester in the background technology. In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a brushless fan tester, includes casing, mainboard, button, terminal, aviation plug and display screen, and the terminal includes positive and negative terminal, PWM terminal and FG terminal, and aviation plug's terminal and terminal electric connection, this wiring mode commonality are strong, and on the one hand make things convenient for the fan wiring of no plug, on the other hand make things convenient for the fan that has the plug to wiring fast to still usable positive and negative terminal drive fan, aviation plug connect the rotational speed of sensor measurement fan. The positive and negative electrode binding posts are connected with the voltage regulating module, the PWM binding posts and the FG binding posts are connected with the MCU processor of the main board, and the keys and the display screen are electrically connected with the MCU processor.

Further describing the scheme, a power circuit, a current detection circuit, a shaping, amplifying and analog-to-digital conversion circuit are integrated on the main board, the power circuit converts commercial power into direct current and inputs the direct current into the voltage regulating module, the power circuit is provided with a switch, the MCU processor is also provided with a BNC interface and is used for being connected with an oscilloscope, and the waveform of the current is led out to the oscilloscope to be convenient to analyze and judge. The current detection circuit transmits current data of the positive and negative binding posts to the MCU processor, and parameters of the current are displayed in real time.

Further describing the scheme, the voltage regulating module is provided with a fine regulating knob and a coarse regulating knob, and the voltage value of the voltage regulating module is transmitted to the display screen through the MCU processor, so that the voltage parameter is displayed on the display screen in real time.

Further describing the scheme, the aviation plug can be externally connected with the infrared photoelectric sensor, a signal processing circuit is integrated on the main board, and the MCU processor counts data of the signal processing circuit and displays the data through the display screen.

Further describing the above scheme, the bottom of the shell is provided with foldable support legs, and the keys, the binding posts, the aviation plug and the display screen are all arranged at the front part of the shell.

Further describing the scheme, the display screen is an LCD lattice display screen, and the main board is also connected with a loudspeaker.

Compared with the prior art, the utility model integrates the existing current speed measurement, FG speed measurement and infrared speed measurement, can automatically adjust the voltage to be 0-53V output through the voltage adjusting module, and can directly supply power to the fan; through design terminal and aviation plug, can support 2 lines, 3 lines and 4 line's fans to test the speed, still can test the speed to the fan of the fan or alternating current of packing into the inside machine through external infrared photoelectric sensor. The utility model can detect and display the rotation speed, current, power, current waveform and FG waveform simultaneously, and can set alarm values for the rotation speed, current and voltage, thereby greatly improving the production test efficiency of the fan and effectively controlling the production quality.

Drawings

FIG. 1 is a schematic view of an embodiment of the present utility model;

FIG. 2 is a schematic block diagram of an embodiment of the present utility model;

fig. 3 is a main circuit diagram provided in an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1. a housing; 2. a key; 3. binding posts; 4. aviation plug; 5. a knob; 6. a switch; 7. a display screen; 8. and (5) supporting legs.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

As shown in fig. 1 to 3, the embodiment of the utility model provides a brushless fan tester, which comprises a shell 1, a main board, keys 2, a binding post 3, an aviation plug 4 and a display screen 7, wherein the binding post 3 comprises an anode binding post, a cathode binding post, a PWM binding post and an FG binding post, and the terminal of the aviation plug 4 is electrically connected with the binding post 3. The positive electrode binding post and the negative electrode binding post are connected with the voltage regulating module, the PWM binding post and the FG binding post are connected with the MCU processor of the main board, and the key 2 and the display screen 7 are electrically connected with the MCU processor. The main board is integrated with a power supply circuit, a current detection circuit, a shaping, amplifying and analog-to-digital conversion circuit, the power supply circuit converts commercial power into direct current and inputs the direct current into the voltage regulating module, the power supply circuit is provided with a switch 6, the MCU processor is also provided with a BNC interface which is used for being connected with an oscilloscope, and the waveform of the current is led out to the oscilloscope to be convenient for analysis and judgment. The current detection circuit transmits current data of the positive and negative binding posts to the MCU processor, and parameters of the current are displayed in real time.

As shown in FIG. 1, the voltage regulating module is provided with a fine-tuning voltage knob 5 and a coarse-tuning voltage knob 5, the voltage can be automatically regulated to 0-53V, the direct current is output to 0-3A, the voltage value of the voltage regulating module is transmitted to the display screen 7 through the MCU processor, and the voltage, current and power parameters are displayed on the display screen 7 in real time.

The aviation plug 4 can be externally connected with an infrared photoelectric sensor, a signal processing circuit is integrated on the main board, and the MCU processor counts data of the signal processing circuit and displays the data through the display screen 7.

The bottom of casing 1 is equipped with collapsible stabilizer blade 8, and button 2, terminal 3, aviation plug 4 and display 7 all establish in the front portion of casing 1. The display screen 7 is an LCD lattice display screen, and a loudspeaker is also connected to the main board for alarming.

In actual use, the support legs 8 are spread, the AC170-230V commercial power is accessed, and then the switch 6 is turned on, as shown in FIG. 1, and different modes are selected according to different types of fans:

when the fan is 2 lines: the current detection mode is selected by pressing a conversion key, the conversion is clicked after the setting is clicked, the upper limit and the lower limit of the current and the rotating speed are set, and if the current and the rotating speed exceed the preset values in the test, the loudspeaker sounds to give an alarm. Then the positive and negative terminal or aviation plug 4 is used to connect with the fan, and the voltage is adjusted to the rated value of the fan by the adjusting knob 5 to conduct testing. The test mode is current test, the rotating speed can be measured only through waveform of current wave, shaping, amplifying and analog-to-digital conversion, the MCU processor displays the current, voltage and rotating speed on the display screen 7, if the current and rotating speed are abnormal, the loudspeaker will sound, and if the fan is normal, the display screen 7 displays PASS.

When the fans are 3 and 4 wires and provided with FG, FG signal detection mode is directly adopted, FG signals refer to feedback signals of motor rotating speed, and MCU processor is adopted to directly throw the speed onto display screen 7. The wiring mode of the fan is just to directly correspond to the wiring terminal 3, as shown in fig. 1. The duty ratio of the PWM can be adjusted through the key 2, the rotating speed of the fan can be changed by changing the duty ratio of the PWM, the output voltage of the voltage regulating module is 3.3V or 5V at the moment, the conversion is clicked after the setting is clicked, the upper limit and the lower limit of the current are set, if the current exceeds a preset value, the loudspeaker sounds to give an alarm, and if the fan is normal, the PASS is displayed by the display screen 7.

When the fan is 3-wire and no FG exists, a current detection mode is adopted, and when the fan is 2-wire, the rotating speed of the fan is changed by adjusting the duty ratio of PWM.

If the fan is installed in the machine and is operated or the fan is an alternating current fan, the infrared photoelectric sensor is connected to the wiring terminal 3 or the aviation plug 4 and is set to an infrared detection mode, the number of blades of the fan is required to be input, the MCU processor calculates pulse data of the infrared photoelectric sensor and the number of blades of the fan, the principle is that the infrared photoelectric sensor sends laser to the blades of the fan, and the laser is reflected when striking the blades due to gaps between the blades, and is not reflected when striking the gaps, so that pulses are formed. The formula of the rotating speed is that the unit time is: rotational speed = number of pulses/number of leaves.

In summary, the utility model integrates the existing current speed measurement, FG speed measurement and infrared speed measurement, and can automatically adjust the voltage 0-53V output through the voltage adjusting module, and can directly supply power to the fan; through design terminal 3 and aviation plug 4, can support 2 lines, 3 lines and 4 line's fans to test the speed, can also test the speed to the fan of packing into machine inside or alternating current through external infrared photoelectric sensor. The utility model can detect the rotating speed, the current, the power, the current waveform and the FG waveform simultaneously, greatly improves the production test efficiency of the fan and effectively controls the production quality.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiments, and the terms "upper," "lower," "left," "right," "front," "back," and the like are used herein with reference to the positional relationship of the drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The above embodiments are only for illustrating the present utility model, not for limiting the present utility model, and various changes and modifications may be made by one of ordinary skill in the relevant art without departing from the spirit and scope of the present utility model, and therefore, all equivalent technical solutions are also within the scope of the present utility model, and the scope of the present utility model is defined by the claims.

Claims

1. The utility model provides a brushless fan tester, includes casing (1), mainboard, button (2), terminal (3), aviation plug (4) and display screen (7), its characterized in that: the wiring terminal (3) comprises an anode wiring terminal, a cathode wiring terminal, a PWM wiring terminal and an FG wiring terminal, the terminal of the aviation plug (4) is electrically connected with the wiring terminal (3), the anode wiring terminal and the cathode wiring terminal are connected with a voltage regulating module, the PWM wiring terminal and the FG wiring terminal are connected with an MCU processor of a main board, and the key (2) and the display screen (7) are electrically connected with the MCU processor.

2. The brushless fan tester according to claim 1, wherein: the power supply circuit converts commercial power into direct current and inputs the direct current into the voltage regulating module, the power supply circuit is provided with a switch (6), the MCU processor is also provided with a BNC interface and is used for being connected with an oscilloscope, and the current detection circuit transmits current data of the positive and negative binding posts to the MCU processor.

3. The brushless fan tester according to claim 1, wherein: the voltage regulating module is provided with a fine adjusting knob and a coarse adjusting knob (5), and the voltage value of the voltage regulating module is transmitted to a display screen (7) through the MCU processor.

4. The brushless fan tester according to claim 1, wherein: the aviation plug (4) is externally connected with the infrared photoelectric sensor, a signal processing circuit is integrated on the main board, and the MCU processor counts data of the signal processing circuit and displays the data through the display screen (7).

5. A brushless fan tester according to any one of claims 1-4, wherein: the bottom of casing (1) is equipped with collapsible stabilizer blade (8), button (2), terminal (3), aviation plug (4) and display screen (7) all establish in the front portion of casing (1).

6. The brushless fan tester according to claim 5, wherein: the display screen (7) is an LCD lattice display screen, and the main board is also connected with a loudspeaker.