Dust collector control system

Abstract

The invention discloses a dust collector control system which comprises a logic controller, a zero crossing point detection module, a motor rotating speed control module and a motor rotating speed detection module. The logic controller obtains a zero crossing point signal and frequency of the input alternating current in real time through the zero crossing point detection module; the logic controller also obtains the rotating speed of the motor in real time through a motor rotating speed detection module; and the logic controller is also used for outputting a motor driving signal and a motor rotating speed according to the zero crossing point signal and the frequency so as to drive the motor to rotate through the motor rotating speed control module. Therefore, the rotating speed of the motor is continuously controlled through the motor rotating speed control module. For example, the rotating speed of the AC motor can be adjusted by using silicon controlled rectifier chopping, so that the AC motor can be controlled to work within the commercial power range with the rated voltage of 85-265 V and the frequency of 45-65 Hz, the requirements of wide voltage and wide frequency are met, and when the detected frequency does not meet the requirements, the AC motor stops working, and electric energy is saved.

Description

Technical Field

[0001] The present invention relates to a vacuum cleaner, and in particular to a vacuum cleaner control system. Background Art

[0002] As people's demands for quality of life and sanitation continue to rise, cleaning and sanitation are increasingly prioritized in various production and public spaces. As a highly effective cleaning tool, vacuum cleaners are widely used in homes and in places with high traffic and logistics, such as supermarkets, subway stations, exhibition centers, and airports. Traditional vacuuming typically involves manual operation or scheduled cleaning. However, due to the large size and high frequency of use, this often requires significant human resources, time, and effort. Consequently, vacuum cleaners are widely used.

[0003] Existing vacuum cleaners usually use AC power to drive the motor to rotate. When the AC power is in an abnormal state or cannot meet the motor's rotation requirements, the motor cannot work properly. However, this process also consumes a lot of electricity. Summary of the Invention

[0004] The main purpose of the present invention is to provide a vacuum cleaner control system to address the deficiencies in the above-mentioned prior art.

[0005] To achieve the above-mentioned object, the present invention provides a vacuum cleaner control system, comprising: a logic controller, a zero-crossing detection module, a motor speed control module, and a motor speed detection module, wherein the logic controller is connected to the zero-crossing detection module, the motor speed detection module, the motor speed detection module, and the motor speed control module, respectively. The logic controller obtains the zero-crossing signal and frequency of the input alternating current in real time through the zero-crossing detection module; the logic controller also obtains the motor speed in real time through the motor speed detection module;

[0006] The logic controller is further configured to output a motor drive signal and a motor speed according to the zero-crossing signal and the frequency, so as to drive the motor to rotate through the motor speed control module.

[0007] Furthermore, according to one embodiment of the present invention, the vacuum cleaner control system further includes:

[0008] The storage module is used for storing the working state parameters of the logic controller, and when starting, the logic controller performs working control according to the stored working state parameters.

[0009] Further, according to an embodiment of the present invention, the working status parameters include any one or more of the dust collecting motor's working time, working times, dust full times, power supply parameters, and motor drive parameters.

[0010] Furthermore, according to an embodiment of the present invention, the logic controller is further configured to store current working state parameters within a set time when it is detected through a zero-crossing signal that the input AC power stops supplying power.

[0011] Furthermore, according to one embodiment of the present invention, when saving the current working status data, the logic controller first reads the original data stored in the storage module and compares it; if the data to be saved this time is consistent with the original data, no erase operation will be performed; otherwise, the current working status data will be flushed to the storage module.

[0012] Furthermore, according to one embodiment of the present invention, the vacuum cleaner control system further includes:

[0013] An AC / DC conversion module is configured to convert the input AC power into DC power to power the logic controller. The AC / DC conversion module includes an energy storage capacitor, which is configured to provide the logic controller with power for storing current working status data when the input AC power stops supplying power.

[0014] Furthermore, according to an embodiment of the present invention, the energy storage capacitor provides the logic controller with power supply energy for a continuous working time of not less than 2 seconds;

[0015] The logic controller will not execute the current working state data saving operation until 100 milliseconds after detecting that the zero-crossing signal is lost.

[0016] Furthermore, according to an embodiment of the present invention, a timer is provided in the logic controller, and the timer is a microsecond timer, and the logic controller periodically obtains the zero-crossing signal of the input AC power through the timer.

[0017] Furthermore, according to one embodiment of the present invention, the vacuum cleaner control system further includes:

[0018] The charging communication module includes three metal contacts, which are the positive pole of the power supply, the negative pole of the power supply and the half-duplex serial communication interface. The charging communication module is used to connect to the dust collection station to introduce power to charge the battery.

[0019] Furthermore, according to one embodiment of the present invention, the charging communication module is also used to communicate with the dust collection station to automatically test the dust collection station based on the charging output voltage and output signal of the dust collection station.

[0020] The vacuum cleaner control system provided by the present invention is connected to the zero-crossing detection module, the motor speed detection module, the motor speed detection module and the motor speed control module respectively through a logic controller. The logic controller obtains the zero-crossing signal and frequency of the input AC power in real time through the zero-crossing detection module; the logic controller also obtains the speed of the motor in real time through the motor speed detection module; the logic controller is also used to output the motor drive signal and the motor speed according to the zero-crossing signal and frequency, so as to drive the motor to rotate through the motor speed control module. In this way, the speed of the motor is continuously controlled by the motor speed control module. For example, the speed of the AC motor can be adjusted using a thyristor chopper, so that the AC motor can be controlled to operate within the mains power range of rated voltage 85V to 265V and frequency 45Hz to 65Hz, meeting the requirements of wide voltage and wide frequency, and when it is detected that the frequency does not meet the requirements, it stops working to save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a circuit structure block diagram of a vacuum cleaner control system provided by an embodiment of the present invention;

[0022] Figure 2 This is a working diagram of the vacuum cleaner provided by an embodiment of the present invention.

[0023] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0025] See Figure 1 and Figure 2 An embodiment of the present invention provides a vacuum cleaner control system, comprising: a logic controller, a zero-crossing detection module, a motor speed control module, and a motor speed detection module, wherein the logic controller is connected to the zero-crossing detection module, the motor speed detection module, the motor speed detection module, and the motor speed control module, respectively; the logic controller obtains the zero-crossing signal and frequency of the input alternating current in real time through the zero-crossing detection module; the logic controller also obtains the motor speed in real time through the motor speed detection module; the logic controller is further configured to output a motor drive signal and motor speed according to the zero-crossing signal and frequency, so as to drive the motor to rotate through the motor speed control module.

[0026] Specifically, since the motor of a vacuum cleaner is typically an AC motor, powered by alternating current (AC) and driven to rotate. The motor's rotation drives the blades, creating flow control and drawing dust into the vacuum cleaner. Since the speed of an AC motor is affected by the frequency of the AC power, it is necessary to obtain AC motor frequency information. This frequency signal can be obtained directly through a mains frequency detection module or indirectly through a zero-crossing detection module. The logic controller includes a microsecond-level timer that collects zero-crossing signals to accurately calculate the mains frequency and zero-crossing points. The logic controller uses this timer to periodically acquire the zero-crossing point signal of the input AC power. Since AC power crosses zero multiple times within a cycle, the zero-crossing point signal can also be used to obtain the mains frequency information. When the logic controller determines that the AC motor frequency information is within a normal range, it controls the motor to start when the AC power crosses zero. This allows the motor to start slowly, preventing arcing and ensuring circuit safety. After the motor starts, it begins to rotate and can rotate to a certain speed to generate a certain amount of wind force, thereby sucking dust into the vacuum cleaner. The logic controller also obtains the motor speed in real time through the motor speed detection module; wherein, a Hall switch can be used to detect the speed of the AC motor in real time. The motor speed is further controlled by the motor speed control module. For example, the speed of the AC motor can be adjusted using a thyristor chopper, so that the AC motor can be controlled to operate within the mains power range of rated voltage 85V to 265V and frequency 45Hz to 65Hz, meeting the requirements of wide voltage and wide frequency. And when it is detected that the frequency does not meet the requirements, it stops working to save energy.

[0027] See Figure 1 and Figure 2 , the vacuum cleaner control system also includes a storage module, and the logic controller also stores the working status parameters through the storage module, and performs work control according to the stored working status parameters when starting. Specifically, during the use of the vacuum cleaner, the working status parameters of the vacuum cleaner can be stored, so that the motor can be controlled according to the stored working status parameters when it is used next time, which can ensure that the motor quickly enters a better working state. In most cases, the change in input power will not be too large during two consecutive uses. Therefore, by controlling the motor operation through the stored working status parameters, a quick start can be achieved. When a change in the input frequency is detected, further adjustment and control is performed through the motor speed control module. Among them, the working status parameters include any one or more of the dust collecting motor's working time, working times, dust full times, power supply parameters and motor drive parameters.

[0028] In one embodiment of the present invention, the logic controller is further configured to store the current operating state parameters within a set time when the input AC power is detected to be cut off through a zero-crossing signal. The logic controller may be a single-chip microcomputer controller, and may use the internal flash memory FLASH of the single-chip microcomputer as a storage medium. Since the number of erase and write times of the flash memory FLASH is relatively limited, there is no need to write the operating state parameter information to the flash memory FLASH in real time. The latest operating state parameters are written to the flash memory FLASH only when it is detected that the input AC power is cut off or the power plug is unplugged, thereby reducing the flash memory FLASH rewriting and extending the service life of the flash memory FLASH.

[0029] In one embodiment of the present invention, when saving the current operating status data, the logic controller first reads the original data stored in the storage module and compares it. If the data to be saved is consistent with the original data, no erase or write operation is performed; otherwise, the current operating status data is flushed to the storage module. When saving data, the original data stored in the FLASH is first read. If the data to be saved is consistent with the original data, no FLASH erase or write operation is performed. This reduces the number of FLASH erase and write operations and extends the FLASH lifespan.

[0030] See Figure 1 , the vacuum cleaner control system also includes: an AC / DC conversion module, the AC / DC conversion module is used to convert the input AC power into DC power to power the logic controller, the AC / DC conversion module includes an energy storage capacitor, the energy storage capacitor is used to provide the logic controller with power for storing the current working status data when the input AC power stops supplying power. A wide voltage input ACDC switching power supply is used to power the system. The input AC power can be converted into 15V DC and 5V DC through the AC / DC conversion module, and power the logic controller; since the capacitor of the AC / DC conversion module stores a certain amount of electricity, it can maintain the logic controller to continue working for about 2 seconds. Under normal working conditions, the logic controller will not erase the FLASH. It will only execute data saving 100 milliseconds after detecting the loss of the zero-crossing signal. By reducing the number of FLASH erases and writes, the service life of the FLASH is extended.

[0031] See Figure 1The vacuum cleaner control system also includes a charging communication module. The charging communication module includes three metal contacts: a positive power supply electrode, a negative power supply electrode, and a half-duplex serial communication interface. The charging communication module is used to connect to the dust collection station to introduce power to charge the battery. The vacuum cleaner can be charged through the charging interface. That is, when the vacuum cleaner is placed in the dust collection station, it can be charged through the charging interface, thereby reducing the need for external chargers and making charging the vacuum cleaner more convenient.

[0032] Furthermore, in one embodiment of the present invention, the charging communication module is also used to communicate with the dust collection station to automatically test the dust collection station based on the charging output voltage and output signal of the dust collection station. The dust collection station can be controlled to complete the dust collection work and can also be automatically tested to see whether the charging output voltage, zero-crossing circuit, motor, sensor, and LED indicator of the dust collection station are working properly.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the scope of the patent. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, directly or indirectly applied in other related technical fields, is also included in the scope of patent protection of the present invention.

Claims

1. A vacuum cleaner control system, characterized in that: include: A logic controller, a zero-crossing detection module, a motor speed control module, and a motor speed detection module, wherein the logic controller is connected to the zero-crossing detection module, the motor speed detection module, the motor speed detection module, and the motor speed control module, respectively; the logic controller obtains the zero-crossing signal and frequency of the input alternating current in real time through the zero-crossing detection module; the logic controller also obtains the speed of the motor in real time through the motor speed detection module; The logic controller is further configured to output a motor drive signal and a motor speed according to the zero-crossing signal and the frequency, so as to drive the motor to rotate through the motor speed control module.

2. The vacuum cleaner control system according to claim 1, characterized in that: Also includes: The storage module is used for storing the working state parameters of the logic controller, and when starting, the logic controller performs working control according to the stored working state parameters.

3. The vacuum cleaner control system according to claim 2, characterized in that: The working status parameters include any one or more of the dust collecting motor's working time, working times, dust full times, power supply parameters, and motor drive parameters.

4. The vacuum cleaner control system according to claim 2, characterized in that: The logic controller is further configured to store the current working state parameters within a set time when the input AC power stops supplying power as detected by the zero-crossing signal.

5. The vacuum cleaner control system according to claim 4, characterized in that: When saving the current working status data, the logic controller first reads the original data stored in the storage module and compares them; if the data to be saved this time is consistent with the original data, no erase operation will be performed; otherwise, the current working status data will be flushed to the storage module.

6. The vacuum cleaner control system according to claim 5, characterized in that: Also includes: An AC / DC conversion module is configured to convert the input AC power into DC power to power the logic controller. The AC / DC conversion module includes an energy storage capacitor, which is configured to provide the logic controller with power for storing current working status data when the input AC power stops supplying power.

7. The vacuum cleaner control system according to claim 6, characterized in that: The energy storage capacitor provides the logic controller with power supply energy for a continuous working time of not less than 2 seconds; The logic controller performs the current working state data saving operation 100 milliseconds after detecting that the zero-crossing signal is lost.

8. The vacuum cleaner control system according to claim 7, characterized in that: The logic controller is provided with a timer, which is a microsecond timer. The logic controller obtains the zero-crossing signal of the input alternating current through the timer.

9. The vacuum cleaner control system according to claim 7, characterized in that: Also includes: The charging communication module includes three metal contacts, which are the positive pole of the power supply, the negative pole of the power supply and the half-duplex serial communication interface. The charging communication module is used to connect to the dust collection station to introduce power to charge the battery.

10. The vacuum cleaner control system according to claim 9, characterized in that: The charging communication module is further used to communicate with the dust collection station to automatically test the dust collection station according to the charging output voltage and output signal of the dust collection station.

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