Hall motor driving filter circuit, motor driving system and clothes airing machine

Abstract

The utility model relates to a Hall motor driving filter circuit, a motor driving system and a clothes airing machine. The Hall motor driving filter circuit comprises a Hall detection module, an interface circuit module, a controller and a motor driving module. The Hall signal detection module is used for collecting Hall signals of motor operation, and the controller is used for receiving the Hall signals and controlling the motor to rotate; the signal output end of the Hall signal detection module is electrically connected with the signal input end of the controller through the interface circuit module; the signal output end of the controller is connected with the motor driving module, and the motor driving module is electrically connected with the motor; and the motor driving module comprises a filter circuit, and the filter circuit is used for filtering the driving signal of the motor. According to the Hall motor driving filter circuit provided by the utility model, the filter circuit is additionally arranged in the motor driving module, so that external interference signals to the motor driving module are effectively filtered, and the stability of motor operation is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of motor drive, and in particular to a Hall motor drive filter circuit, a motor drive system, and a clothes drying rack. Background Technology

[0002] In modern electronics, Hall effect circuits are a commonly used sensor technology that utilizes the Hall effect to measure the magnitude and direction of magnetic fields. The Hall effect refers to the electromotive force (EMF) generated when an electric current passes through a magnetic field, perpendicular to both the current and the magnetic field; this EMF is called the Hall voltage. By measuring the Hall voltage, the strength and direction of the magnetic field can be calculated. Hall effect circuits are widely used in various fields, including automotive, aerospace, and industrial automation. Meanwhile, with the continuous development of motor drive technology, the filtering circuits of motor drive modules are becoming increasingly important.

[0003] Existing Hall effect circuits have several drawbacks in practical applications. First, the limitations of surface-mount Hall effect chips prevent them from meeting the demands of certain specialized applications, such as those requiring specially shaped chips. Second, existing Hall effect circuits typically lack filtering circuitry. While this design enables motor operation, it fails to reduce or eliminate the effects of high-frequency noise, thus failing to meet filtering requirements. Furthermore, the connection between the existing Hall effect control board and the main system control board uses a single-terminal connection (the other end of the wire is directly soldered to the control board). This design is problematic because, during soldering, excessively high temperatures can cause the insulation to melt, leading to wire defects. Additionally, over time, the wire may detach from the control board and break, causing quality issues. Therefore, existing Hall effect circuits have limitations in practical applications and require further improvement. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a Hall motor drive filter circuit, a motor drive system, and a clothes drying rack, which can improve the quality and stability of wiring and improve the operating efficiency of the motor.

[0005] In a first aspect, this utility model provides a Hall motor drive filter circuit, comprising: a Hall signal detection module, an interface circuit module, a controller, and a motor drive module; wherein, the Hall signal detection module is used to collect Hall signals during motor operation, and the controller is used to receive the Hall signals and control the rotation of the motor;

[0006] The signal output terminal of the Hall signal detection module is electrically connected to the signal input terminal of the controller through the interface circuit module; the signal output terminal of the controller is connected to the motor drive module, and the motor drive module is electrically connected to the motor.

[0007] The motor drive module includes a filtering circuit, which is used to filter the drive signal of the motor.

[0008] In one possible implementation, the filtering circuit includes a first filtering capacitor, a second filtering capacitor, a first inductor, and a second inductor; the positive output port of the controller is connected to the first interface of the motor through the first inductor, and the negative output port of the controller is connected to the second interface of the motor through the second inductor; the positive output port of the controller is also grounded through the first filtering capacitor, and the negative output port of the controller is also grounded through the second filtering capacitor.

[0009] In one possible implementation, the filtering circuit further includes a third filtering capacitor, and the positive output port of the controller is also connected to the negative output port of the controller through the third filtering capacitor.

[0010] In one possible implementation, the Hall signal detection module includes a first Hall signal detection circuit and a second Hall signal detection circuit;

[0011] The first Hall signal detection circuit includes a first Hall sensor and a first pull-up resistor; the power supply pin of the first Hall sensor is connected to the controller, the ground pin of the first Hall sensor is grounded, the output pin of the first Hall sensor is electrically connected to the first terminal of the interface circuit module, and the output pin of the first Hall sensor is also connected to the controller through the first pull-up resistor.

[0012] as well as,

[0013] The second Hall signal detection circuit includes a second Hall sensor and a second pull-up resistor; the power supply pin of the second Hall sensor is connected to the controller, the ground pin of the second Hall sensor is grounded, the output pin of the second Hall sensor is electrically connected to the first terminal of the interface circuit module, and the output pin of the second Hall sensor is also connected to the controller through the second pull-up resistor;

[0014] The controller is used to provide operating voltage for the first Hall sensor and the second Hall sensor.

[0015] In one possible implementation, the first Hall signal detection circuit further includes a first capacitor and a second capacitor; the power supply pin of the first Hall sensor is grounded through the first capacitor, and the output pin of the first Hall sensor is also grounded through the second capacitor.

[0016] as well as,

[0017] The second Hall signal detection circuit further includes a third capacitor and a fourth capacitor. The power supply pin of the second Hall sensor is grounded through the third capacitor, and the output pin of the second Hall sensor is also grounded through the fourth capacitor.

[0018] In one possible implementation, the interface circuit module is a double-ended terminal wire, with the first end of the double-ended terminal wire connected to the Hall signal detection module and the second end of the double-ended terminal wire connected to the controller.

[0019] In one possible implementation, the power supply pin of the first end of the double-ended terminal wire is connected to the controller, the ground pin of the first end of the double-ended terminal wire is grounded, the first input pin of the first end of the double-ended terminal wire is connected to the output pin of the first Hall sensor, and the second input pin of the first end of the double-ended terminal wire is connected to the output pin of the second Hall sensor.

[0020] In one possible implementation, the Hall signal detection module employs a plug-in sensor.

[0021] Secondly, this utility model provides a motor drive system, including a motor and a Hall motor drive filter circuit as described in any of the above.

[0022] The motor is electrically connected to the motor drive module of the Hall motor drive filter circuit.

[0023] Thirdly, this utility model provides a clothes drying rack, including a motor and a Hall motor drive filter circuit as described in any of the above.

[0024] The motor is electrically connected to the motor drive module of the Hall motor drive filter circuit.

[0025] In this embodiment, the controller drives the motor to rotate, the Hall signal detection module detects the Hall signal generated by the motor operation and inputs the Hall signal to the controller, which controls the switching of the motor according to the Hall signal. By adding inductors and capacitors to the motor drive module to form a filter circuit, external interference to the signal in the motor drive module is eliminated, thereby improving the operating efficiency and stability of the motor. In addition, the Hall signal detection module and the control board are connected by a two-terminal interface cable, which improves the quality of the cable and meets the needs of more diverse application scenarios.

[0026] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the Hall motor drive filter circuit in one embodiment of the present invention;

[0028] Figure 2 This is a structural diagram of the motor drive module in one embodiment of the present invention;

[0029] Figure 3 This is a structural diagram of the Hall signal detection module in one embodiment of the present invention;

[0030] Figure 4 This is a structural diagram of the interface circuit module in one embodiment of the present invention;

[0031] Figure 5 This is a structural diagram of a double-ended terminal wire in one embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of a motor drive system in one embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the structure of a clothes drying rack according to one embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

[0035] It should be understood that the described embodiments are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0037] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] Furthermore, in the description of this application, unless otherwise stated, "several" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0039] The Hall effect refers to the phenomenon that when a solid conductor or semiconductor is placed in a magnetic field and a current flows through it, the charge carriers in the conductor are deflected to one side by the Lorentz force, thereby generating a voltage, which is called the Hall voltage.

[0040] Research has revealed that existing Hall effect chips used to measure Hall signals within motors are typically surface-mount chips. The Hall control board is directly connected to the main control board via soldering. The soldering process can easily cause the insulation sleeve to melt due to excessively high temperatures, resulting in quality problems. Furthermore, the electromagnetic radiation from the motor and the internal circuitry can cause noise interference to the motor's drive signal, affecting the normal operation of the motor.

[0041] Therefore, this utility model embodiment provides a Hall motor drive filter circuit, which aims to solve the above-mentioned technical problems.

[0042] Please see Figure 1 , Figure 1 This is a schematic diagram of the Hall motor drive filter circuit in one embodiment of the present invention.

[0043] In the first aspect, this utility model provides a Hall motor drive filter circuit, including a Hall signal detection module 1, an interface circuit module 2, a controller 3, and a motor drive module 4;

[0044] The signal output terminal of the Hall signal detection module 1 is electrically connected to the signal input terminal of the controller 3 through the interface circuit module 2; the signal output terminal of the controller 3 is connected to the motor drive module 4, and the motor drive module 4 is electrically connected to the motor 5;

[0045] The Hall signal detection module 1 is used to collect Hall signals during motor operation. The Hall signal detection module 1 is connected to the controller 3. Based on the changes in the magnetic field of the motor 5, the Hall signal detection module 1 measures the Hall signal of the motor 5 and outputs the signal to the controller 3.

[0046] The controller 3 is used to receive the Hall signal; wherein, the signal output by the Hall signal detection module 1 to the controller 3 is a digital signal, including high level and low level states. The controller 3 can directly read and process the digital signal, and realize real-time monitoring and fault diagnosis of the motor operating status by detecting the phase and frequency of the Hall signal.

[0047] The controller 3 is connected to the motor 5 through the motor drive circuit 4, and the controller 3 is used to control the rotation of the motor 5. In one embodiment, the controller 3 provides a 24V DC power supply to the motor 5. When the positive output is energized, the controller controls the motor 5 to rotate forward, and when the negative output is energized, the controller controls the motor 5 to rotate in reverse.

[0048] The controller 3 may be a processing chip capable of processing Hall signals and driving motor operation. No specific model or structure of the controller is specified here.

[0049] Please see Figure 2 , Figure 2 This is a structural diagram of a motor drive module according to one embodiment of the present invention. The motor drive module 4 includes a filter circuit 41, which is used to filter the drive signal of the motor 5.

[0050] In this context, circuit noise refers to random signals present in electronic devices or circuits, caused by random movements within electronic components and interference from the external environment. In this embodiment, the drive signal of the motor drive module is affected by noise interference generated by electronic components, the Hall signal detection module, and the motor's magnetic field. A filter circuit is incorporated into the motor drive module to filter out noise interference from the drive signal and improve the stability of motor operation.

[0051] The filtering circuit 41 includes a first filtering capacitor C5, a second filtering capacitor C6, a first inductor L1, and a second inductor L2. The positive output port of the controller 3 is connected to the first interface of the motor 5 through the first inductor L1, and the negative output port of the controller 3 is connected to the second interface of the motor 5 through the second inductor L2. The positive output port of the controller 3 is also grounded through the first filtering capacitor C5, and the negative output port of the controller 3 is also grounded through the second filtering capacitor C6.

[0052] According to the concept of this utility model, in one embodiment, the filter circuit 41 further includes a third filter capacitor C7, and the positive output port of the controller 3 is connected to the negative output port of the controller 3 through the third filter capacitor C7.

[0053] The first filter capacitor C5, the second filter capacitor C6, the third filter capacitor C7, the first inductor L1, and the second inductor L2 constitute the filter circuit of the motor drive module 4, used to reduce power supply noise and filter out interference signals in the circuit. The first filter capacitor C5 and the second filter capacitor C6 are grounded, allowing the AC component in the circuit to flow to ground through the capacitors, thereby removing some of the AC component. When a signal reaches the first inductor L1 and / or the second inductor L2, the first inductor L1 and / or the second inductor L2 generate inductive reactance to the AC signal in the voltage, thereby preventing the AC component from flowing and further filtering out interference signals. The larger the capacitance of the filter capacitor, the smaller the capacitive reactance to the AC component in the signal, and the better the filtering effect; the larger the inductor, the greater the inductive reactance to the AC component in the signal, and the better the filtering effect. In this embodiment, the capacitance and model of the filter capacitors and inductors are set according to the actual application scenario and are not specifically limited here.

[0054] Please see Figure 3 , Figure 3 This is a structural diagram of a Hall signal detection module according to one embodiment of the present invention. The Hall signal detection module 1 includes a first Hall signal detection circuit 11 and a second Hall signal detection circuit 12.

[0055] The first Hall signal detection circuit 11 includes a first Hall sensor U1 and a first pull-up resistor R1; the power supply pin of the first Hall sensor U1 is connected to the controller 3, the ground pin of the first Hall sensor U1 is grounded, the output pin of the first Hall sensor U1 is electrically connected to the first terminal of the interface circuit module 2, and the output pin of the first Hall sensor U1 is also connected to the controller 3 through the first pull-up resistor R1.

[0056] The first Hall sensor U1 is a magnetic field sensor based on the Hall effect, used to identify the phase position information of the motor windings and obtain the Hall voltage of the motor. The power supply pin of the first Hall sensor U1 is the positive terminal of the sensor and is electrically connected to the controller 3. The controller 3 provides the operating voltage to the first Hall sensor U1; in this embodiment, the controller 3 provides a 5V DC operating voltage to the first Hall sensor U1. The ground pin is the negative terminal of the first Hall sensor U1 and is grounded. The output pin is used to output a Hall signal. The output pin of the first Hall sensor is electrically connected to the controller 3 through the interface circuit module 2, thereby outputting the Hall signal to the controller. The output pin of the first Hall sensor is also connected to a first pull-up resistor R1, which is connected to the controller 3. The pull-up resistor clamps the uncertain signal to a high level and also limits current. One end of the first pull-up resistor is connected to the controller as the power supply terminal, and the other end is connected to the output pin of the first Hall sensor. When there is no magnetic field, the output of the first Hall sensor remains at a high level.

[0057] Accordingly, the second Hall signal detection circuit 12 includes a second Hall sensor U2 and a second pull-up resistor R2. The power supply pin of the second Hall sensor U2 is connected to the controller 3, the ground pin of the second Hall sensor U2 is grounded, the output pin of the second Hall sensor U2 is electrically connected to the first terminal of the interface circuit module 2, and the output pin of the second Hall sensor U2 is also connected to the controller 3 through the second pull-up resistor R2. The structure and function of the second Hall signal detection circuit 12 are basically the same as those of the first Hall signal detection circuit 11 described above, and will not be repeated here.

[0058] In one embodiment, the Hall signal detection circuit 2 uses an OCH41F bipolar Hall sensor.

[0059] In this embodiment of the invention, the first Hall sensor U1 and the second Hall sensor U2 are respectively installed at preset positions on the motor 5 to collect Hall signals at corresponding positions on the motor 5. The two sets of Hall signals are then sent to the controller 3. The controller 3 analyzes the two sets of Hall signals and determines the operating state of the motor based on whether the waveforms are normal, thereby controlling the motor's on / off state. For example, it analyzes whether the duty cycle of the two sets of Hall signals reaches 50% and whether the phase difference between the two sets of Hall signals is 90°. If the waveforms of the two sets of Hall signals are normal, the motor is controlled to run; if the waveforms of the two sets of Hall signals are abnormal, the motor is controlled to stop.

[0060] According to the concept of this utility model, in one embodiment, the first Hall signal detection circuit 11 further includes a first capacitor C1 and a second capacitor C2; the power supply pin of the first Hall sensor U1 is grounded through the first capacitor C1, and the output pin of the first Hall sensor U1 is also grounded through the second capacitor C2.

[0061] In this circuit, one end of the first capacitor C1 and the second capacitor C2 are respectively connected to the pin of the first Hall sensor U1, and the other end of the first capacitor C1 and the second capacitor C2 are grounded, so as to achieve the functions of voltage stabilization and filtering of the circuit.

[0062] Accordingly, the second Hall signal detection circuit 12 also includes a third capacitor C3 and a fourth capacitor C4; the power supply pin of the second Hall sensor U2 is grounded through the third capacitor C3, and the output pin of the second Hall sensor U2 is also grounded through the fourth capacitor C4. The arrangement of the third capacitor C3 and the fourth capacitor C4 in the second Hall detection circuit 12 is basically the same as the arrangement of the first capacitor C1 and the second capacitor C2 in the first Hall signal detection circuit 11, and will not be repeated here.

[0063] Please see Figure 4 and Figure 5 , Figure 4 This is a structural diagram of the interface circuit module in one embodiment of the present invention. Figure 5 This is a structural diagram of a double-ended terminal wire according to one embodiment of the present invention. The interface circuit module 2 is a double-ended terminal wire. The first end of the double-ended terminal wire is connected to the Hall signal detection module, and the second end of the double-ended terminal wire is connected to the controller. The power supply pin of the first end of the double-ended terminal wire is connected to the controller 3, the ground pin of the first end of the double-ended terminal wire is grounded, the first input pin of the first end of the double-ended terminal wire is connected to the output pin of the first Hall sensor U1, and the second input pin of the first end of the double-ended terminal wire is connected to the output pin of the second Hall sensor U2.

[0064] In one embodiment, to further improve wiring efficiency and enhance wire quality and stability, the Hall signal detection module 1 employs a plug-in sensor. The second end of the double-ended terminal wire is connected to the main control board of the controller 3, and the first end of the double-ended terminal wire is connected to the Hall signal detection module 1. The first end of the double-ended terminal wire is a four-pin connector, where the first pin is grounded, the second pin is connected to the controller 3 and powered by the controller 3, and the third and fourth pins are respectively connected to the output pins of the first Hall sensor U1 and the second Hall sensor U2, thereby transmitting Hall signals to the controller 3 via the double-ended terminal wire. Using a plug-in sensor in conjunction with the double-ended terminal wire avoids the complex soldering process required for surface-mount sensor elements, reduces soldering defects, and improves circuit reliability and stability.

[0065] In this embodiment, a double-ended terminal wire is used to connect the Hall signal detection module and the controller at both ends, enabling the Hall signal detection module to collect Hall signals and send them to the controller. This also solves the technical problem in existing technologies where welding is used for connection, which can easily damage circuits and electronic components during high-temperature welding, leading to product defects. This provides a reliable wiring solution. Furthermore, the size and shape of the plug-in sensor are not limited, allowing it to meet the needs of more diverse application scenarios.

[0066] This utility model provides a Hall effect motor drive filter circuit. A controller connects a Hall effect signal detection module and a motor. The Hall effect signal detection module detects Hall effect signals at two preset positions on the motor and sends these signals to the controller. The controller reads and analyzes the two sets of Hall effect signal waveforms. If the waveforms are correct, the controller controls the motor to run; otherwise, it stops the motor. The controller drives the motor through a motor drive module. A filter circuit is added to the motor drive module to filter out noise interference from the Hall effect magnetic field and other circuit factors, thereby improving the stability of the motor operation.

[0067] Secondly, please refer to Figure 6 , Figure 6 This is a schematic diagram of the structure of a motor drive system according to one embodiment of the present invention. The present invention provides a motor drive system 100, including a motor 110 and a Hall motor drive filter circuit as described in the above embodiment, wherein the motor 110 is electrically connected to the motor drive module 120 in the Hall motor drive filter circuit.

[0068] In this embodiment, the motor 110 is electrically connected to the motor drive module 120. The controller in the Hall effect motor drive filter circuit provides power to the motor 110 and controls its forward and reverse rotation. The filter circuit in the motor drive module 120 improves the stability of motor operation.

[0069] Thirdly, please refer to Figure 7 , Figure 7 This is a schematic diagram of the structure of a clothes drying rack according to one embodiment of the present invention. The present invention provides a clothes drying rack 200, including a motor 210 and a Hall motor drive filter circuit as described in the above embodiment, wherein the motor 210 is electrically connected to the motor drive module 220 in the Hall motor drive filter circuit.

[0070] The clothes drying rack 200 of this utility model includes a motor 210, which is electrically connected to the motor drive module 220 in the Hall motor drive filter circuit. The filter circuit in the motor drive module 220 filters out noise signal interference, which can improve the stability of the operation of the motor 210 in the clothes drying rack 200.

[0071] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A Hall motor drive filter circuit, characterized by, The application relates to a motor control system, which comprises a Hall signal detection module, an interface circuit module, a controller and a motor driving module; wherein the Hall signal detection module is used for collecting Hall signals of motor operation, the controller is used for receiving the Hall signals and controlling the motor rotation; a signal output end of the Hall signal detection module is electrically connected with a signal input end of the controller through the interface circuit module; a signal output end of the controller is connected with the motor driving module, and the motor driving module is electrically connected with the motor; the motor driving module comprises a filter circuit which is used for filtering the driving signals of the motor. The filter circuit comprises a first filter capacitor, a second filter capacitor, a first inductor and a second inductor; a positive output port of the controller is connected with a first interface of the motor through the first inductor, and a negative output port of the controller is connected with a second interface of the motor through the second inductor; the positive output port of the controller is also grounded through the first filter capacitor, and the negative output port of the controller is also grounded through the second filter capacitor. The filter circuit further comprises a third filter capacitor, and the positive output port of the controller is connected with the negative output port of the controller through the third filter capacitor. The Hall signal detection module comprises a first Hall signal detection circuit and a second Hall signal detection circuit.

2. The Hall motor drive filter circuit of claim 1, wherein, The first Hall signal detection circuit comprises a first Hall sensor and a first pull-up resistor; a power supply pin of the first Hall sensor is connected with the controller, a ground pin of the first Hall sensor is grounded, an output pin of the first Hall sensor is electrically connected with a first end of the interface circuit module, and the output pin of the first Hall sensor is also connected with the controller through the first pull-up resistor.

3. The Hall motor drive filter circuit of claim 2, wherein, The second Hall signal detection circuit comprises a second Hall sensor and a second pull-up resistor; a power supply pin of the second Hall sensor is connected with the controller, a ground pin of the second Hall sensor is grounded, an output pin of the second Hall sensor is electrically connected with the first end of the interface circuit module, and the output pin of the second Hall sensor is also connected with the controller through the second pull-up resistor.

4. The Hall motor drive filter circuit of claim 1, wherein, The controller is used for providing working voltage for the first Hall sensor and the second Hall sensor. The first Hall signal detection circuit further comprises a first capacitor and a second capacitor; the power supply pin of the first Hall sensor is grounded through the first capacitor, and the output pin of the first Hall sensor is also grounded through the second capacitor. The second Hall signal detection circuit further comprises a third capacitor and a fourth capacitor; the power supply pin of the second Hall sensor is grounded through the third capacitor, and the output pin of the second Hall sensor is also grounded through the fourth capacitor. The interface circuit module is a double-head terminal wire, a first end of the double-head terminal wire is connected with the Hall signal detection module, and a second end of the double-head terminal wire is connected with the controller. ​ 5. The Hall motor drive filter circuit of claim 4, wherein, ​ ​ ​ 6. The Hall motor drive filter circuit of claim 4, wherein, ​ 7. The Hall motor drive filter circuit of claim 6, wherein, The power pin of the first end of the double-head terminal line is connected with the controller, the ground pin of the first end of the double-head terminal line is grounded, the first input pin of the first end of the double-head terminal line is connected with the output pin of the first Hall sensor, and the second input pin of the first end of the double-head terminal line is connected with the output pin of the second Hall sensor.

8. The Hall motor drive filter circuit of claim 1, wherein, The Hall signal detection module adopts a plug-in sensor.

9. An electric motor drive system characterized by comprising: The Hall motor drive filter circuit comprises a motor and a Hall sensor. The motor is electrically connected with the motor drive module of the Hall motor drive filter circuit.

10. A clothes drying machine characterised in that, The Hall motor drive filter circuit comprises a motor and a Hall sensor. The motor is electrically connected with the motor drive module of the Hall motor drive filter circuit.

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