Multifunctional brushless fan tester

Abstract

A multifunctional brushless fan tester, it includes: power module, detection module, display module, control module, alarm module and interface module, power module is connected with detection module, display module, control module, alarm module electricity respectively and provides working voltage, detection module is connected with interface module electricity, is used for gathering brushless fan's voltage, current and rotating speed signal, display module is connected with detection module, control module electricity, is used for showing detection parameter and set parameter, the utility model discloses novel structure, through integrated voltage, current, rotating speed multi-parameter synchronous detection, breaks traditional equipment single parameter detection limit, covers brushless fan core performance index, realizes to fan operation state full dimension monitoring, can obtain key performance data once detection, need not multiple replacement equipment or manual switching detection item, greatly improves detection integrity and efficiency.

Description

Technical Field

[0001] This utility model relates to a testing instrument, specifically a multifunctional brushless fan testing instrument. Background Technology

[0002] Brushless fans (typically DC brushless motors) are widely used in air conditioning, ventilation, air purification equipment, and industrial ventilation systems due to their high efficiency, energy saving, and stable operation. Their performance stability directly affects the overall operating efficiency, energy consumption, and even lifespan of the equipment. Therefore, accurate and comprehensive performance testing of brushless fans is a crucial step in ensuring product quality and reliable equipment operation.

[0003] However, existing brushless fan testing equipment has many problems that urgently need to be solved:

[0004] Traditional testing equipment focuses on basic electrical parameter detection, only able to collect simple parameters such as voltage and current. However, in practical applications of brushless fans, the rotational speed is directly related to airflow and energy consumption. Abnormal rotational speed can cause malfunctions such as excessive operating noise and insufficient heat dissipation. Furthermore, under different operating conditions (such as low-load / high-load modes of air conditioning), the coordination and matching of voltage, current, and rotational speed affect the overall performance of the machine. Single parameter detection cannot comprehensively evaluate fan performance and cannot meet the needs of R&D and production for full-dimensional performance verification of fans. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a multifunctional brushless fan tester, which effectively solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model includes:

[0007] Power supply module, detection module, display module, control module, alarm module, and interface module;

[0008] The power supply module is electrically connected to the detection module, display module, control module, and alarm module respectively, and provides them with operating voltage.

[0009] The detection module is electrically connected to the interface module and is used to collect the voltage, current and speed signals of the brushless fan.

[0010] The display module is electrically connected to the detection module and the control module, and is used to display detection parameters and set parameters.

[0011] The control module is electrically connected to the detection module and the display module, and is used to set the detection parameters;

[0012] The alarm module is electrically connected to the detection module, and an alarm signal is issued when the detection parameters exceed the preset threshold.

[0013] Preferably, the detection module includes a voltage detection unit, a current detection unit, and a speed detection unit; the voltage detection unit uses a resistor voltage divider circuit and an operational amplifier conditioning circuit to acquire voltage signals in the range of 0-48V; the current detection unit uses a shunt resistor or a Hall sensor to acquire current signals; and the speed detection unit uses a photoelectric sensor or a Hall sensor to acquire speed signals.

[0014] Preferably, the display module includes a digital tube group and an indicator light group; the digital tube group is used to display voltage value, current value, speed value and time setting parameters; the indicator light group includes red, green and yellow LEDs to indicate the working status of the device.

[0015] Preferably, the control module includes at least two buttons for setting and adjusting detection parameters.

[0016] Preferably, the alarm module includes a buzzer, which emits an audible and visual alarm when the voltage, current, or rotation speed exceeds a preset threshold.

[0017] Preferably, the power supply module includes a 12V DC power supply and a 220V AC power supply. The 12V DC power supply powers the display module and the control module, and the 220V AC power supply powers the detection module and the alarm module after rectification and filtering.

[0018] Beneficial effects: By integrating the synchronous detection of multiple parameters such as voltage, current and speed, it breaks through the limitation of single parameter detection in traditional equipment, covers the core performance indicators of brushless fans, realizes full-dimensional monitoring of the fan's operating status, and can obtain key performance data in one test without having to change equipment multiple times or manually switch test items, which greatly improves the integrity and efficiency of the test. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is the overall circuit diagram of this utility model;

[0021] Figure 2 This is a flowchart illustrating the overall workflow of this utility model.

[0022] Figure 3 This is a flowchart of the testing process for this utility model;

[0023] Figure 4 This is the interactive flowchart of this utility model;

[0024] Figure 5This is the alarm triggering flowchart of this utility model. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 The specific embodiments of this utility model will be described in further detail.

[0026] Example 1, by Figure 1-5 This utility model provides a multifunctional brushless fan tester, comprising:

[0027] Power supply module, detection module, display module, control module, alarm module, and interface module;

[0028] The power supply module is electrically connected to the detection module, display module, control module, and alarm module respectively, and provides them with operating voltage.

[0029] The detection module is electrically connected to the interface module and is used to collect the voltage, current and speed signals of the brushless fan.

[0030] The display module is electrically connected to the detection module and the control module, and is used to display detection parameters and set parameters.

[0031] The control module is electrically connected to the detection module and the display module, and is used to set the detection parameters;

[0032] The alarm module is electrically connected to the detection module, and an alarm signal is issued when the detection parameters exceed the preset threshold.

[0033] Power module composition: includes 12V DC power supply and 220V AC power supply.

[0034] Power supply logic: The 12V DC power supply provides stable power to the display module and control module, ensuring the operation of functions such as parameter setting and numerical display; the 220V AC power supply, after rectification and filtering, provides power to the detection module and alarm module, ensuring the reliable execution of voltage, current, speed detection and abnormal alarm functions.

[0035] Detection Module: Voltage Detection Unit: Utilizing a resistor voltage divider circuit combined with an operational amplifier conditioning circuit, it accurately acquires the input voltage of the brushless fan, covering a range of 0-48V, adapting to the voltage requirements of common brushless fans. It converts the acquired voltage signal into a processable electrical signal, providing a basis for subsequent display and judgment.

[0036] Current detection unit: Optional shunt resistor or Hall sensor solution to acquire the brushless fan's operating current signal. Shunt resistors are low-cost and have a fast response; Hall sensors offer high accuracy and good isolation, and users can adapt them as needed to achieve real-time monitoring of current parameters.

[0037] Speed ​​detection unit: Employs either a photoelectric sensor or a Hall sensor to capture the brushless fan's speed signal. The photoelectric sensor measures speed by counting when light is blocked, offering a sensitive response; the Hall sensor detects speed changes using magnetic field variations, providing strong anti-interference capabilities. Both methods can accurately reflect the fan's speed status.

[0038] Display Module: Digital Tube Assembly: Responsible for displaying voltage, current, speed, and time setting parameters. It clearly presents real-time parameters and user-defined test times during the testing process, facilitating quick retrieval of key data.

[0039] Indicator lights: Composed of red, green, and yellow LEDs, these lights visually indicate the equipment's operating status. For example, a solid green light indicates normal power supply and equipment readiness; a flashing red light indicates that the detected parameters have exceeded the threshold, triggering an alarm; and a lit yellow light can be used to indicate that the equipment is in a special operating mode (such as parameter setting mode).

[0040] Control Module: Operation Implementation: Configure at least two buttons (e.g., SK1, SK2) for setting detection parameters (thresholds and target values ​​for voltage, current, speed, test time, etc.). Button trigger level changes are converted into commands by the control circuit, enabling customized test conditions to adapt to different specifications and testing requirements of brushless fans.

[0041] Alarm Module: Core Component: Centered on a buzzer, the buzzer emits an audible and visual alarm when the detection module determines that the voltage, current, or speed exceeds the preset threshold of the control module. The audible alert combined with indicator light color changes (such as a flashing red light) provides a dual reminder to the user of any abnormal operation of the brushless fan, facilitating timely troubleshooting.

[0042] Interface Module: Function: Provides an electrical connection interface (such as terminal blocks, dedicated connectors) for brushless fans, ensuring stable transmission of test signals. Adapts to the wiring requirements of brushless fans of different specifications, enabling quick and reliable connection between the device and the fan under test, ensuring a smooth testing process.

[0043] I. Power Supply Principle of Power Module

[0044] The power module serves as the "power source" of the tester, providing stable power to all functional modules. The 12V DC power supply directly powers the display and control modules, meeting the low-voltage, low-power requirements of the digital tube display driver and button control circuits, ensuring stable operation of parameter setting and numerical display circuits. After the 220V AC power supply is connected, it is rectified and filtered by the rectifier circuit to convert the AC power into stable DC power, supplying power to the detection and alarm modules. This ensures reliable execution of voltage, current, and speed detection, as well as abnormal alarm functions, establishing a stable power foundation for the entire tester.

[0045] II. Signal Acquisition and Processing Principle of the Detection Module

[0046] Voltage Detection: The voltage detection unit employs a combination of resistor voltage divider and operational amplifier conditioning. After the brushless fan input voltage is connected, it is first reduced proportionally to a range that the operational amplifier can handle through a resistor voltage divider circuit. Subsequently, the signal is amplified and filtered by the operational amplifier, converting the acquired voltage signal into a precise and stable electrical signal, which is then transmitted to the display module and control module. This enables the acquisition and preprocessing of voltage values ​​within the 0-48V range, providing accurate data for subsequent display and judgment.

[0047] Current detection: If a shunt resistor scheme is used, when the brushless fan's operating current flows through the shunt resistor, according to Ohm's law, a voltage drop proportional to the current is generated across the resistor. This voltage signal is collected, amplified, filtered, and processed by circuits to convert it into a recognizable current parameter. If a Hall sensor is selected, the Hall effect is utilized. When current passes through a conductor placed in a magnetic field, a Hall voltage perpendicular to both the current and the magnetic field is generated. The sensor detects this voltage, converts and processes it, and outputs an electrical signal corresponding to the brushless fan's operating current. Both methods can achieve real-time monitoring of current parameters, adapting to different accuracy and cost requirements.

[0048] Speed ​​detection: When using a photoelectric sensor, as the brushless fan rotates, the blades and other structures periodically block the light. The light-emitting end of the photoelectric sensor continuously emits light, and the receiving end calculates the speed by "number of blocking times / unit time" based on the number of light blocking times and a timing circuit. If a Hall sensor is used, the fan rotation drives components such as permanent magnets, causing changes in the magnetic field around the sensor, which triggers the Hall element to generate a pulse signal. The pulse frequency is related to the speed. After processing by shaping, counting, and other circuits, it is converted into a speed numerical signal, accurately reflecting the fan speed status. The two sensors are based on different physical principles and meet the needs of diverse detection scenarios.

[0049] III. Display and Control Interaction Principles

[0050] Display module driver: The digital tube group of the display module receives voltage, current, and speed electrical signals transmitted from the detection module, as well as time setting signals from the control module. Through its internal decoding and driving circuit, it converts these electrical signals into on / off control of each segment of the digital tube. For example, for a seven-segment display, it illuminates the corresponding segments according to the segment code rules of different numbers and symbols, clearly displaying voltage, current, speed, and time setting parameters. The indicator light group is controlled by the control circuit based on the equipment status (such as power on / off, fault alarm), controlling the lighting and flashing of red, green, and yellow LEDs to provide intuitive feedback on the equipment's operating status. For example, a green light is constantly on when the power is normal, and a red light flashes when there is an abnormal parameter alarm.

[0051] Control module command interaction: When a button on the control module (such as SK1, SK2) is pressed, it changes the voltage level of the circuit containing the button. This voltage change is processed by level conversion and debouncing circuits, and then converted into a clear command that is transmitted to the control core. For example, pressing a button enters the parameter setting mode. By pressing the button repeatedly, parameters such as voltage, current, speed threshold, and test time can be adjusted. The control module simultaneously transmits the set parameter signals to the display module, updating the digital tube display content, thus enabling user-device interaction and customizing test conditions.

[0052] IV. Alarm Module Triggering Principle

[0053] The detection module continuously transmits the collected voltage, current, and speed signals to the control module. The control module compares the real-time signals with preset thresholds (set via buttons on the control module). When the detected voltage, current, or speed values ​​exceed the corresponding threshold range, the control module sends a trigger signal to the alarm module, energizing the buzzer to sound. Simultaneously, indicator lights (such as flashing red lights) work together to provide a combined audio-visual alert, promptly informing the user that the brushless fan's operating parameters have deviated from the normal range, facilitating rapid response and troubleshooting.

[0054] Each module constructs a complete brushless fan performance testing process through the aforementioned methods of electrical signal transmission, physical effect conversion, and command interaction, enabling accurate multi-parameter testing, convenient operation, and intelligent alarms, providing reliable technical support for brushless fan quality control and performance debugging.

[0055] I. Detection Function Dimensions: By integrating the synchronous detection of multiple parameters such as voltage, current, and speed, it breaks through the limitations of traditional equipment's single-parameter detection, covers the core performance indicators of brushless fans, and realizes full-dimensional monitoring of the fan's operating status. Key performance data can be obtained in one test, without the need to change equipment multiple times or manually switch test items, greatly improving the completeness and efficiency of the test.

[0056] II. Detection Accuracy and Efficiency: In terms of hardware, relying on a precise sampling circuit (resistor voltage divider + operational amplifier conditioning, professional sensor) and a stable power supply (dual voltage independent protection) ensures accurate acquisition of voltage (0-48V precise coverage), current and speed signals, improving data reliability from the source;

[0057] In terms of software logic, the control module allows for custom thresholds, the display module provides real-time feedback, and the alarm module provides automatic warnings, replacing manual verification of parameters, simplifying the detection process, reducing human error, and improving both detection efficiency and accuracy.

[0058] III. Scenario Adaptation Dimension: Industrial Production End: Supports adaptation and testing of brushless fans of different specifications (interface module compatibility + parameter customization), production lines can quickly switch test objects, adapt to the fan testing needs of multiple industries such as air conditioners and air purifiers, and improve the versatility of production lines;

[0059] Laboratory testing: Precise parameter acquisition and stable alarm mechanism meet the requirements of R&D-level performance verification and fault reproduction testing, and provide reliable data support for wind turbine optimization design and life assessment, covering the entire scenario from production to R&D.

[0060] IV. User Experience: The display module uses a combination of digital tubes and indicator lights, providing clear values ​​and intuitive status, allowing users to quickly identify the status of the equipment and fan without the need for professional interpretation.

[0061] The control module uses button-based operation instead of complex knob / code settings, lowering the operating threshold and allowing frontline workers and laboratory personnel to quickly get started, reducing training costs and the risk of misoperation.

[0062] This testing instrument addresses the pain points of traditional equipment in terms of functionality, efficiency, and accuracy through "precise detection of all parameters, simplified operation throughout the entire process, and flexible adaptation to all scenarios." It provides an efficient tool for quality control and performance research of brushless fans by comprehensively upgrading detection efficiency, data reliability, and scenario coverage.

[0063] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multifunctional brushless fan tester, characterized in that, include: Power supply module, detection module, display module, control module, alarm module, and interface module; The power supply module is electrically connected to the detection module, display module, control module, and alarm module respectively, and provides them with operating voltage. The detection module is electrically connected to the interface module and is used to collect the voltage, current and speed signals of the brushless fan. The display module is electrically connected to the detection module and the control module, and is used to display detection parameters and set parameters. The control module is electrically connected to the detection module and the display module, and is used to set the detection parameters; The alarm module is electrically connected to the detection module, and an alarm signal is issued when the detection parameters exceed the preset threshold.

2. The multifunctional brushless fan tester according to claim 1, characterized in that: The detection module includes a voltage detection unit, a current detection unit, and a speed detection unit; the voltage detection unit uses a resistor voltage divider circuit and an operational amplifier conditioning circuit to acquire voltage signals in the range of 0-48V; the current detection unit uses a shunt resistor or a Hall sensor to acquire current signals; and the speed detection unit uses a photoelectric sensor or a Hall sensor to acquire speed signals.

3. The multifunctional brushless fan tester according to claim 1, characterized in that: The display module includes a digital tube group and an indicator light group; the digital tube group is used to display voltage value, current value, speed value and time setting parameters; the indicator light group includes red, green and yellow LEDs to indicate the working status of the equipment.

4. The multifunctional brushless fan tester according to claim 1, characterized in that: The control module includes at least two buttons for setting and adjusting detection parameters.

5. The multifunctional brushless fan tester according to claim 1, characterized in that: The alarm module includes a buzzer, which emits an audible and visual alarm when the voltage, current, or rotation speed exceeds a preset threshold.

6. The multifunctional brushless fan tester according to claim 1, characterized in that: The power supply module includes a 12V DC power supply and a 220V AC power supply. The 12V DC power supply powers the display module and the control module, while the 220V AC power supply powers the detection module and the alarm module after rectification and filtering.

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