EC fan driver integrated with CO2 and low-cost wind speed sensor
By integrating a CO2 sensor and a wind speed sensor into the EC wind turbine driver, the problem of the inability of existing EC wind turbine drivers to achieve closed-loop control is solved, and the effect of environmental adaptive adjustment is realized.
Patent Information
- Application Number
- CN202520836204.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-29
AI Technical Summary
Existing EC wind turbine drives are mainly open-loop control, which cannot achieve closed-loop control and multi-parameter linkage. They also lack self-learning capabilities and cannot optimize control strategies based on historical data.
By integrating CO2 and wind speed sensors, and through the coordinated operation of power modules, microcontrollers, and protection circuits, the system achieves closed-loop control based on environmental perception, and dynamically adjusts the fan speed.
It achieves complete functionality from environmental perception to closed-loop control, and is suitable for scenarios requiring adaptive environmental adjustment, such as smart buildings and agricultural greenhouses.
Smart Images
Figure CN223923355U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to EC fan technical field, concretely is a kind of EC fan driver integrated with CO2 and low-cost wind speed sensor. BACKGROUND
[0002] EC fan driver is a kind of advanced driving device for controlling electronic commutation (EC) fan operation, it realizes accurate control to fan motor by electronic technology, with high efficiency, low noise, energy saving and other advantages, is widely used in air conditioning, ventilation, refrigeration and other fields.EC fan driver realizes the speed of brushless direct current motor (BLDC) by FOC (magnetic field oriented control) or square wave control, steering and protection.
[0003] In prior art, general EC fan driver is mainly open-loop control, user sets speed after, driver adjusts motor output by FOC algorithm, but this kind of EC fan driver cannot realize closed-loop control and multi-parameter linkage, does not have self-learning function, cannot optimize control strategy according to historical data. UTILITY MODEL CONTENT
[0004] The purpose of this section is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.
[0005] In view of the above or general EC fan driver in prior art is mainly open-loop control, user sets speed after, driver adjusts motor output by FOC algorithm, but this kind of EC fan driver cannot realize closed-loop control and multi-parameter linkage, does not have self-learning function, cannot optimize control strategy according to historical data.
[0006] To achieve the above object, the utility model provides the following technical scheme:
[0007] A kind of EC fan driver integrated with CO2 and low-cost wind speed sensor, comprising:
[0008] Driver housing, the left and right sides of the driver housing are equipped with assembly bolt, the inside of the driver housing is installed with driver control component, the driver control component includes the bearing circuit board fixedly installed in the inside of driver housing, CO2 sensor interface and wind speed sensor interface are fixedly installed on the upper end face side of the bearing circuit board;
[0009] The rear end of the driver shell is provided with a sensor assembly, the sensor assembly comprises a first plug connector detachably mounted in the inside of the CO2 sensor interface, one end of the first plug connector is connected with a first sensor wire harness, and one end of the first sensor wire harness is electrically connected with a CO2 sensor.
[0010] As a further scheme of the utility model: the sensor assembly comprises a second plug connector detachably mounted in the inside of the wind speed sensor interface, one end of the second plug connector is connected with a second sensor wire harness, and one end of the second sensor wire harness is electrically connected with a wind speed sensor.
[0011] As a further scheme of the utility model: the driver control assembly further comprises a power module fixedly installed on the upper end face of the bearing circuit board, and one side of the power module is provided with a microcontroller fixedly installed on the upper end face of the bearing circuit board.
[0012] As a further scheme of the utility model: the upper end face of the bearing circuit board is fixedly installed with a protection and auxiliary module and a power management module, and the power management module is located in front of the protection and auxiliary module.
[0013] As a further scheme of the utility model: the left and right sides of the driver shell are provided with heat dissipation assemblies, the heat dissipation assembly comprises an air inlet dustproof net detachably mounted on the right end face of the driver shell, and an air outlet dustproof net is detachably mounted on the left end face of the driver shell.
[0014] As a further scheme of the utility model: the heat dissipation assembly further comprises a fixing frame fixedly installed in the right side of the inside of the driver shell, a motor is fixedly installed in the inside of the fixing frame, and a fan blade is fixedly installed at the output end of the motor.
[0015] As a further scheme of the utility model: the bottom end face of the bearing circuit board is attached with a plurality of equidistantly distributed heat conduction plates, and heat dissipation channels are formed between adjacent heat conduction plates.
[0016] As a further scheme of the utility model: the bottom end of the heat conduction plate is provided with a damping assembly, the damping assembly comprises an assembly groove opened in the bottom end of the heat conduction plate, a damper and a buffer spring are fixedly installed in the inside of the assembly groove, and the buffer spring is sleeved outside the damper.
[0017] As a further scheme of the utility model:
[0018] Compared with the prior art, the utility model has the beneficial effects that:
[0019] The EC fan driver integrated with the CO2 and the wind speed sensor realizes complete functions from environment sensing to closed loop control through the cooperative work of the power module, the MCU, the sensor, the protection circuit and the like, and dynamically adjusts the fan rotating speed through the CO2 concentration and the wind speed feedback, and is suitable for intelligent buildings, agricultural greenhouses and the like needing environment self-adaptive adjustment. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a structural schematic view of an EC fan driver integrated with CO2 and low-cost wind speed sensor.
[0021] Figure 2 It is a structural schematic view of the inside of the shell of the EC fan driver integrated with CO2 and low-cost wind speed sensor.
[0022] Figure 3 It is a structural schematic view of the bottom end of the bearing circuit board of the EC fan driver integrated with CO2 and low-cost wind speed sensor.
[0023] Figure 4 It is a structural schematic view of the heat dissipation assembly of the EC fan driver integrated with CO2 and low-cost wind speed sensor.
[0024] Figure 5 It is a structural schematic view of the damping assembly of the EC fan driver integrated with CO2 and low-cost wind speed sensor.
[0025] In the figure: 1, driver shell; 2, assembly bolt; 3, driver control assembly; 301, power module; 302, microcontroller; 303, CO2 sensor interface; 304, protection and auxiliary module; 305, power management module; 306, wind speed sensor interface; 307, bearing circuit board; 4, sensor assembly; 401, first plug; 402, first sensor wire harness; 403, CO2 sensor; 404, second plug; 405, second sensor wire harness; 406, wind speed sensor; 5, heat dissipation assembly; 501, fixing frame; 502, motor; 503, fan blade; 504, air inlet dust screen; 505, air outlet dust screen; 506, heat dissipation channel; 507, heat conduction plate; 6, damping assembly; 601, damper; 602, buffer spring; 603, assembly groove. DETAILED DESCRIPTION
[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent and easy to understand, the specific implementation manners of the utility model are described in detail below in combination with the drawings of the specification.
[0027] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the spirit of the present application, therefore, the present application is not limited to the specific embodiments disclosed below.
[0028] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive with other embodiments.
[0029] Embodiment 1
[0030] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 , the first embodiment of the present application provides an EC fan driver integrated with CO2 and low-cost wind speed sensor, comprising:
[0031] The driver housing 1 is provided with assembly bolts 2 on the left and right sides of the driver housing 1, and the driver control assembly 3 is installed in the interior of the driver housing 1, the driver control assembly 3 includes a bearing circuit board 307 fixedly installed in the interior of the driver housing 1, and a CO2 sensor interface 303 and a wind speed sensor interface 306 are fixedly installed on one side of the upper end face of the bearing circuit board 307;
[0032] The rear end of the driver housing 1 is provided with a sensor assembly 4, the sensor assembly 4 includes a first plug connector 401 detachably installed in the interior of the CO2 sensor interface 303, one end of the first plug connector 401 is connected with a first sensor wire harness 402, and one end of the first sensor wire harness 402 is electrically connected with a CO2 sensor 403.
[0033] Specifically, the sensor assembly 4 includes a second plug connector 404 detachably installed in the interior of the wind speed sensor interface 306, one end of the second plug connector 404 is connected with a second sensor wire harness 405, and one end of the second sensor wire harness 405 is electrically connected with a wind speed sensor 406.
[0034] Further, the low-cost scheme of the wind speed sensor 406 can be selected as a hot type wind speed sensor such as TSI series or a differential pressure type anemometer, and the range is selected as 0-10 m / s according to the design of the air duct. The wind speed sensor 406 can be installed in the straight pipe section of the air duct to avoid the turbulent flow area, or the fan air outlet.
[0035] Specifically, the driver control assembly 3 further comprises a power module 301 fixedly installed on the upper end face of the bearing circuit board 307, one side of the power module 301 is provided with a microcontroller 302 fixedly installed on the upper end face of the bearing circuit board 307, one side of the upper end face of the bearing circuit board 307 is fixedly installed with a protection and auxiliary module 304 and a power management module 305, the power management module 305 is located in front of the protection and auxiliary module 304, the driver control assembly 3 further comprises a communication module supporting RS485, MODBUSRTU, CAN and other industrial protocols, realizing multi-machine joint control or remote monitoring.
[0036] Further, the bearing circuit board 307 provided can support and connect the entire driver control assembly 3, the power module 301 converts direct current into alternating current, controls the motor speed and direction through the PWM signal, and at the same time, the power module 301 also works in cooperation with the bus capacitor and the rectifier bridge, the bus capacitor is used for smoothing the direct current voltage and storing energy to cope with transient load changes such as starting or acceleration; the rectifier bridge converts alternating current input such as 24V AC into direct bus voltage to supply power to the power module 301; the microcontroller 302 runs the FOC algorithm and PID control, processes sensor data and generates PWM signals, the protection and auxiliary module 304 includes an overcurrent / overvoltage protection circuit, a temperature detection circuit and an EMC filter circuit. The overcurrent / overvoltage protection circuit is used to monitor the bus current and voltage, and when an abnormality occurs, the power module 301 is turned off and an alarm is triggered; the temperature detection circuit monitors the temperature of the driver and the motor through the NTC thermistor, and when the temperature is high, the operation is reduced or the machine is stopped; the EMC filter circuit is used to suppress high-frequency switching noise and prevent interference with sensor signals. The power management module 305 provides stable low-voltage direct current for the control circuit, sensors and communication modules.
[0037] In use, the CO2 sensor 403 provided can be selected from infrared principle NDIR or electrochemical sensor, and the low-cost scheme can select MH-Z19 infrared, the precision is ±50 ppm, and the CO2 sensor 403 can be installed near the height of the breathing area such as the desktop of the conference room or the canopy of the greenhouse; the CO2 sensor 403 collects the environmental concentration in real time, the signal is amplified and filtered, and then read by the MCU and compared with the set threshold value such as 800 ppm, so as to trigger the PID adjustment target speed, the wind speed sensor 406 measures the actual air volume and converts the frequency signal into a wind speed value, and the MCU corrects the PWM duty cycle according to the deviation between the wind speed and the set value, adjusts the motor power, and the microcontroller 302 optimizes the three-phase current output through the FOC algorithm according to the parameters such as CO2 concentration, wind speed and temperature, drives the motor speed regulation, and realizes energy saving and performance balance.
[0038] In summary, the EC fan driver integrated with the CO2 and wind speed sensor 406 realizes the complete function from environmental perception to closed-loop control through the cooperative work of the power module 301, MCU, sensor, protection circuit and other components; the fan speed is dynamically adjusted through the CO2 concentration and wind speed feedback, which is suitable for intelligent buildings, agricultural greenhouses and other environments requiring adaptive adjustment.
[0039] Embodiment 2
[0040] Please refer to Figure 1 、 Figure 2 and Figure 3 , which is a second embodiment of the utility model, and provides an improved design of the EC fan driver integrated with the CO2 and low-cost wind speed sensor 406.
[0041] Specifically, the left and right sides of the driver housing 1 are provided with heat dissipation assemblies 5, the heat dissipation assembly 5 includes an air inlet dust screen 504 detachably mounted on the right side end face of the driver housing 1, and an air outlet dust screen 505 detachably mounted on the left side end face of the driver housing 1, the heat dissipation assembly 5 further includes a fixed frame 501 fixedly installed inside the right side of the driver housing 1, a motor 502 fixedly installed inside the fixed frame 501, a fan blade 503 fixedly installed at the output end of the motor 502, a plurality of equidistantly distributed heat conduction plates 507 attached to the bottom end face of the bearing circuit board 307, and a heat dissipation channel 506 formed between adjacent heat conduction plates 507.
[0042] Further, the motor 502 is started, and the motor 502 works to drive the fan blade 503 to rotate, so that the external air is sucked into the driver housing 1 through the air inlet dust screen 504, and the hot air is discharged from the air outlet dust screen 505 through the heat conduction plates 507 and the heat dissipation channel 506, thereby completing the heat dissipation process.
[0043] Specifically, the bottom end of the heat conduction plate 507 is provided with a damping assembly 6, the damping assembly 6 includes an assembly groove 603 opened in the bottom end of the heat conduction plate 507, a damper 601 and a buffer spring 602 fixedly installed inside the assembly groove 603, and the buffer spring 602 is sleeved outside the damper 601.
[0044] Further, the damper 601 and the buffer spring 602 are arranged to abut against the bottom end of the heat conduction plate 507, so that the top end of the heat conduction plate 507 is tightly attached to the end face of the bearing circuit board 307, so that the heat generated during the operation of the device can be absorbed, thereby improving the heat dissipation effect, and at the same time, through the arrangement of the damper 601 and the buffer spring 602, the device can also play a buffering effect when it is impacted in the up-down direction, thereby playing a certain damping and buffering protection effect in the up-down direction.
[0045] In use, the motor 502 can be controlled to work by the driver control assembly 3, the motor 502 works to drive the fan blade 503 to rotate, so that the external air can be sucked into the driver housing 1 through the air inlet dust screen 504, and the hot air is discharged from the air outlet dust screen 505 through the heat conduction plate 507 and the heat dissipation channel 506. The damper 601 and the buffer spring 602 abut against the bottom end of the heat conduction plate 507, so that the top end of the heat conduction plate 507 is tightly attached to the end face of the bearing circuit board 307. In this way, the heat conduction plate 507 can absorb the heat generated during the operation of the device and discharge the heat through the formed heat dissipation channel 506.
[0046] In summary, the core components of the EC fan driver, such as the power module 301, MCU, capacitor, etc., will generate heat during operation, especially the switching loss of the power module 301 IGBT / MOSFET and the motor copper loss will cause local high temperature. Through the heat dissipation assembly 5, the heat conduction and other heat dissipation modes are avoided. The key devices are overheated, which causes performance drift such as increased MOSFET on-resistance or functional failure.
[0047] Importantly, it should be noted that the construction and arrangement of the application shown in the various exemplary implementations is illustrative only. Although only a few implementations have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible in the light of the foregoing description. For example, the dimensions, scaling, proportions, values, materials, colors, orientations, and the like of the various elements, including the size of the components, the dimensions of the elements, the shapes and proportions of the elements, and the values of parameters such as temperature, pressure, etc., the mounting arrangements, the use of materials, the colors, the orientation, etc. can be changed. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the positions of elements can be inverted or otherwise changed, and the nature or number of discrete elements can be varied or changed. Therefore, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be changed or re-ordered according to alternative implementations. In the claims, any "means plus function" clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary implementations without departing from the scope of the present application. Accordingly, the present application is not limited to the particular implementations described but extends to various modifications, combinations, sub-combinations, and equivalents within the scope of the claims.
[0048] In addition, in order to provide a brief description of the exemplary implementations, not all features of the actual implementations (i.e., those not relevant to the best mode of carrying out the present application currently considered, or those not relevant to the implementation of the present application) can be described.
[0049] It is to be understood that the detailed description and specific examples described above are intended for purposes of illustration only and are not intended to limit the scope of the technology as claimed. Those of ordinary skill in the art, and the operators of those systems, will recognize that many modifications can be made to the technology described above while achieving the same results without departing from the spirit and scope of the claimed technology. Accordingly, the legal scope of claims described above will not be limited to the particular examples disclosed but will include any alternatives or modifications that are within the spirit and scope of the claimed technology.
[0050] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application. It should be included in the scope of the claims of the present application.
Claims
1. An EC fan drive integrated with a CO2 and low cost wind speed sensor, characterized by: Include: The driver housing (1), the left and right sides of the driver housing (1) are provided with assembly bolts (2), the inside of the driver housing (1) is provided with a driver control assembly (3), the driver control assembly (3) comprises a bearing circuit board (307) fixedly installed in the inside of the driver housing (1), the upper end face of the bearing circuit board (307) is fixedly provided with a CO2 sensor interface (303) and a wind speed sensor interface (306); The rear end of the driver housing (1) is provided with a sensor assembly (4), the sensor assembly (4) comprises a first plug connector (401) detachably installed in the CO2 sensor interface (303), one end of the first plug connector (401) is connected with a first sensor wire harness (402), one end of the first sensor wire harness (402) is electrically connected with a CO2 sensor (403).
2. An EC fan drive integrated with a CO2 and low cost wind speed sensor according to claim 1, characterized in that: The sensor assembly (4) comprises a second plug connector (404) detachably installed in the wind speed sensor interface (306), one end of the second plug connector (404) is connected with a second sensor wire harness (405), one end of the second sensor wire harness (405) is electrically connected with a wind speed sensor (406).
3. An EC fan drive integrated with a CO2 and low cost wind speed sensor according to claim 1, characterized in that: The driver control assembly (3) further comprises a power module (301) fixedly installed on the upper end face of the bearing circuit board (307), one side of the power module (301) is provided with a microcontroller (302) fixedly installed on the upper end face of the bearing circuit board (307).
4. An EC fan drive integrated with a CO2 and low cost wind speed sensor according to claim 3, characterized in that: The upper end face of the bearing circuit board (307) is fixedly provided with a protection and auxiliary module (304) and a power management module (305), the power management module (305) is located in front of the protection and auxiliary module (304).
5. The EC fan driver integrated with CO2 and low cost wind speed sensor of claim 1, wherein: The left and right sides of the driver housing (1) are provided with a heat dissipation assembly (5), the heat dissipation assembly (5) comprises an air inlet dustproof net (504) detachably installed on the right end face of the driver housing (1), and an air outlet dustproof net (505) is detachably installed on the left end face of the driver housing (1).
6. An EC fan drive integrated with a CO2 and low cost wind speed sensor according to claim 5, characterized in that: The heat dissipation assembly (5) further comprises a fixed frame (501) fixedly installed in the right side of the inside of the driver housing (1), a motor (502) is fixedly installed in the inside of the fixed frame (501), and a fan blade (503) is fixedly installed on the output end of the motor (502).
7. The EC fan driver integrated with CO2 and low cost wind speed sensor of claim 1, wherein: The bottom end face of the bearing circuit board (307) is attached with a plurality of equidistantly distributed heat conduction plates (507), and a heat dissipation channel (506) is formed between adjacent heat conduction plates (507).
8. An EC fan drive integrated with a CO2 and low cost wind speed sensor according to claim 7, characterized in that: The bottom end of the heat conduction plate (507) is provided with a damping assembly (6), the damping assembly (6) comprises an assembly groove (603) opened in the bottom end of the heat conduction plate (507), a damper (601) and a buffer spring (602) are fixedly installed in the inside of the assembly groove (603), and the buffer spring (602) is sleeved outside the damper (601).