Dust collector with dust detection and dust content display functions

Abstract

The utility model discloses a dust collector with dust detection and dust content display, which comprises a switching power supply module, a central control module, an infrared detection module and a display module, the switching power supply module is used for providing stable direct current voltage for a control system, the infrared detection module is used for outputting a dust amount detection signal of a detection area, and the display module is used for displaying the dust amount of the detection area. The central control module is used for outputting a corresponding dust capacity display signal according to the dust capacity detection signal, the signal input end of the display module is connected with the signal output end of the central control module, and the signal output end of the display module is used for displaying the dust content of the current detection area according to the dust capacity display signal. The infrared detection module of the dust detection circuit can display the dust content of the detection area through the display module, so that a user can intuitively know the dust state of the current detection area, and the cleaning quality is ensured; and meanwhile, repeated cleaning of the cleaned area by the user can be reduced, the cleaning time of the user is saved, and the cleaning efficiency is improved.

Description

Technical Field

[0002] The utility model relates to the technical field of vacuum cleaners, in particular to a vacuum cleaner with dust detection and dust content display.

Background Art

[0004] With the development of society and the continuous improvement of people's living standards, vacuum cleaners, as a household cleaning appliance, have been used in more and more families. Generally, a vacuum cleaner drives the fan blades to rotate at a high speed by an electric motor, generates air negative pressure in a sealed housing, and sucks dirt such as dust and garbage into its interior. Then, the dirt is separated from the air inside, the dirt is retained at a designated position, and at the same time, the clean air is discharged outside the vacuum cleaner.

[0005] When the existing vacuum cleaner is working for dust collection, although there is also a detection circuit for detecting the dust state of the object to be cleaned, the user cannot intuitively obtain the detection information of the object to be cleaned, resulting in the user being unable to judge whether the object to be cleaned is clean, unable to ensure the cleaning quality, and at the same time, there is also the problem of repeated cleaning, resulting in low cleaning efficiency.

Content of the Utility Model

[0007] In order to solve the technical problems that currently the user cannot intuitively obtain the dust state of the object to be cleaned, resulting in the user being unable to judge whether the object to be cleaned is clean, prone to repeated cleaning, resulting in the inability to ensure the cleaning quality and low cleaning efficiency, the utility model provides a vacuum cleaner with dust detection and dust content display.

[0008] The utility model is realized by the following technical solutions:

[0009] A vacuum cleaner with dust detection and dust content display includes a switching power supply module, a central control module, an infrared detection module and a display module;

[0010] The signal output end of the switching power supply module is connected to the enable end of the central control module, and the switching power supply module is used to provide a stable DC voltage for the control system;

[0011] The signal input end of the infrared detection module is connected to the detection signal end of the central control module, and the signal output end of the infrared detection module is connected to the detection signal acquisition end of the central control module. The infrared detection module is used to output a dust amount detection signal of the detection area;

[0012] The central control module is used to output a corresponding dust amount display signal according to the dust amount detection signal;

[0013] The signal input terminal of the display module is connected to the signal output terminal of the central control module, and the signal output terminal of the display module is used to display the dust content of the current detection area according to the dust amount display signal.

[0014] A vacuum cleaner with dust detection and dust content display as described above, the display module includes:

[0015] A digital tube display unit, the signal input terminal of the digital tube display unit is connected to the first signal output terminal of the central control module, and the digital tube display unit is used to display the dust content of the current detection area according to the dust amount display signal;

[0016] An LED display unit, the signal input terminal of the LED display unit is connected to the second signal output terminal of the central control module, and the LED display unit is used to turn on or off the LED lights according to the dust amount display signal to prompt the user whether the current detection area has been cleaned up.

[0017] A vacuum cleaner with dust detection and dust content display as described above, the digital tube display unit includes a two-digit digital tube D1S1, resistors R5, R6, R7, R10, R11, R12 and R15. The common terminal of the two-digit digital tube D1S1 is connected to the first signal output terminal of the central control module. A resistor R5 is connected between the A1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R6 is connected between the B1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R7 is connected between the C1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R10 is connected between the D1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R11 is connected between the E1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R12 is connected between the F1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R15 is connected between the G1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module.

[0018] A vacuum cleaner with dust detection and dust content display as described above, the LED display unit includes light-emitting diodes LED1, LED2, resistors R3 and R4. The positive pole of the light-emitting diode LED1 is connected to the second signal output terminal of the central control module, and a resistor R3 is connected between the negative pole of the light-emitting diode LED1 and the ground. The positive pole of the light-emitting diode LED2 is connected to the second signal output terminal of the central control module, and a resistor R4 is connected between the negative pole of the light-emitting diode LED2 and the ground.

[0019] A vacuum cleaner with dust detection and dust content display as described above, the central control module includes a control chip U3, and the model of the control chip U3 is CMS79FT616.

[0020] A vacuum cleaner with dust detection and dust content display as described above, the switching power supply module includes a switching power supply chip U2, a fuse F1, a varistor ZNR1, an iron core inductor L1, an iron core inductor L2, an iron core inductor L3, a diode D1, a diode D2, a diode D3, a diode D4, a polarized capacitor C1, a polarized capacitor C2, a polarized capacitor C4, a polarized capacitor C7, a resistor R1, a resistor R2, a resistor R9 and a resistor R13. One end of the fuse F1 is connected to the live wire, the other end of the fuse F1 is connected to the iron core inductor L2, and a varistor ZNR1 is connected between the common point of the fuse F1 and the iron core inductor L2 and the neutral wire. The other end of the iron core inductor L2 is connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is connected to the positive electrode of the diode D2, the negative electrode of the diode D2 is connected to the iron core inductor L3, and the common point of the diode D2 and the iron core inductor L3 is connected to the positive electrode of the polarized capacitor C1. The negative electrode of the polarized capacitor C1 is connected to the neutral wire. The other end of the iron core inductor L3 is connected to the input end of the switching power supply chip U2, and the common point of the iron core inductor L3 and the switching power supply chip U2 is connected to the positive electrode of the polarized capacitor C7. The negative electrode of the polarized capacitor C7 is connected to the neutral wire. A resistor R1 and a resistor R2 are connected between the input end of the switching power supply chip U2 and the VDD terminal of the switching power supply chip U2. The FB terminal of the switching power supply chip U2 is connected to the negative electrode of the diode D4, the positive electrode of the diode D4 is connected to the neutral wire. A resistor R9 is connected between the GND terminal of the switching power supply chip U2 and the CS terminal of the switching power supply. The GND terminal of the switching power supply chip U2 is connected to the iron core inductor L1, the other end of the iron core inductor L1 is connected to the positive electrode of the polarized capacitor C2, the negative electrode of the polarized capacitor C2 is connected to the positive electrode of the diode D3, the negative electrode of the diode D3 is connected to the negative electrode of the polarized capacitor C4, and the positive electrode of the polarized capacitor C4 is connected to the VDD terminal of the switching power supply chip U2. A resistor R13 is connected between the signal output terminal of the switching power supply module and the ground.

[0021] A vacuum cleaner with dust detection and dust content display as described above. The infrared detection module includes an operational amplifier U4, an infrared emitting diode LED20, an infrared receiving diode LED21, resistors R18, R20, R21, R23, R24, R25, R26, a chip resistor RJ2, capacitors C8, C10, and C11. The positive electrode of the infrared emitting diode LED20 is connected to the detection signal terminal of the central control module through a resistor R26. The negative electrode of the infrared emitting diode LED20 is connected to the positive electrode of the infrared receiving diode LED21. The negative electrode of the infrared receiving diode LED21 is connected to the common point of the resistor R18, capacitors C10, and C11. The other end of the resistor R18 is connected to the output terminal of the switching power supply module. The other end of the capacitor C11 is grounded. The other end of the capacitor C10 is connected to the IN1- terminal of the operational amplifier U4. The enable terminal of the operational amplifier U4 is connected to the output terminal of the switching power supply module. The enable terminal of the operational amplifier U4 is connected with a pull-up capacitor C8. The IN1+ terminal of the operational amplifier U4 is connected to the output terminal of the switching power supply module through a resistor R23. The IN1+ terminal of the operational amplifier U4 is connected with a pull-up resistor R24. A chip resistor RJ2 is connected between the OUT1 terminal and the IN2+ terminal of the operational amplifier U4. A resistor R21 is connected between the IN2- terminal of the operational amplifier U4 and the output terminal of the switching power supply module. The IN2- terminal of the operational amplifier U4 is connected with a pull-up resistor R25. A resistor R20 is connected between the OUT2 terminal of the operational amplifier U4 and the detection signal acquisition terminal of the central control module.

[0022] A vacuum cleaner with dust detection and dust content display as described above. The model of the operational amplifier U4 is LM358.

[0023] A vacuum cleaner with dust detection and dust content display as described above further includes a motor drive module. The signal input terminal of the motor drive module is connected to the motor drive terminal of the central control module. The signal input terminal of the motor drive module is used to receive the drive control signal output by the central control module. The signal output terminal of the motor drive module is used to drive the vacuum cleaner to suck dust according to the drive control signal.

[0024] A vacuum cleaner with dust detection and dust content display as described above, the motor drive module includes a thyristor optocoupler IC1, a thyristor BT1, a resistor R4, a resistor R9, a resistor R13, a resistor R16, a capacitor CX3 and a motor MOTO1. A resistor R9 is connected between the anode of the thyristor optocoupler IC1 and the motor drive end of the central control module. The cathode of the thyristor optocoupler IC1 is grounded. A resistor R16 is connected between the main electrode T2 of the thyristor optocoupler IC1 and the main electrode T2 of the thyristor BT1. The main electrode T1 of the thyristor optocoupler IC1 is connected to the control electrode of the thyristor BT1. A resistor R13 is connected between the control electrode of the thyristor BT1 and the main electrode T1 of the thyristor BT1. The main electrode T1 of the thyristor BT1 is connected to the live wire. The main electrode T2 of the thyristor BT1 is connected to one end of the motor MOTO1. The other end of the motor MOTO1 is connected to the neutral wire. An RC absorption unit is connected between the motor MOTO1 and the live wire. The RC absorption unit is a series connection of a resistor R4 and a capacitor CX3.

[0025] Compared with the prior art, a vacuum cleaner with dust detection and dust content display proposed by the present utility model has the following beneficial effects:

[0026] 1. The dust detection circuit proposed by the present utility model includes an infrared detection module and a display module. The infrared detection module can display the dust content in the detection area through the display module, so that the user can intuitively know the dust state in the current detection area, ensuring the cleaning quality; at the same time, it can also enable the user to reduce the repeated cleaning of the cleaned area, saving the user's cleaning time and improving the cleaning efficiency.

[0027] 2. The infrared detection module of the present utility model includes an infrared emitting tube and an infrared receiving tube. The infrared emitting tube and the infrared receiving tube can achieve non-contact detection, avoiding the interference of the surrounding environment and improving the accuracy of dust detection; at the same time, the infrared beam emitted by the infrared emitting tube has strong anti-interference ability and is not easily interfered by other light sources, ensuring the reliability of dust detection.

Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments.

[0030] Figure 1 It is the circuit principle structure block diagram of the present utility model;

[0031] Figure 2 It is the circuit schematic diagram of the switching power supply module of the present utility model;

[0032] Figure 3 It is the circuit schematic diagram of the infrared detection module of the present utility model;

[0033] Figure 4 is the circuit schematic diagram of the central control module of the present utility model;

[0034] Figure 5 is the circuit schematic diagram of the digital tube display unit of the present utility model;

[0035] Figure 6 is the circuit schematic diagram of the motor drive module of the present utility model.

Detailed implementation manners

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0038] Specific embodiments, in combination with Figures 1 to 6 As shown, the technical solution of the present utility model is further described. A vacuum cleaner with dust detection and dust content display includes a switching power supply module 100, a central control module 200, an infrared detection module 300 and a display module 400. The signal output end of the switching power supply module 100 is connected to the enable end of the central control module 200. The switching power supply module 100 is used to provide a stable DC voltage for the control system. The signal input end of the infrared detection module 300 is connected to the detection signal end of the central control module 200. The signal output end of the infrared detection module 300 is connected to the detection signal acquisition end of the central control module 200. The infrared detection module 300 is used to output a dust amount detection signal in the detection area. The central control module 200 is used to output a corresponding dust amount display signal according to the dust amount detection signal. The signal input end of the display module 400 is connected to the signal output end of the central control module 200. The signal output end of the display module 400 is used to display the dust content in the current detection area according to the dust amount display signal. The infrared detection module 300 of the dust detection circuit can display the dust content in the detection area through the display module 400, so that the user can intuitively know the dust state in the current detection area and ensure the cleaning quality; at the same time, it can also enable the user to reduce the repeated cleaning of the cleaned area, save the user's cleaning time and improve the cleaning efficiency.

[0039] Further, as a preferred implementation rather than a limitation of this solution, the switching power supply module 100 includes a switching power supply chip U2, a fuse F1, a varistor ZNR1, an iron core inductor L1, an iron core inductor L2, an iron core inductor L3, a diode D1, a diode D2, a diode D3, a diode D4, a polarized capacitor C1, a polarized capacitor C2, a polarized capacitor C4, a polarized capacitor C7, a resistor R1, a resistor R2, a resistor R9, and a resistor R13. One end of the fuse F1 is connected to the live wire, the other end of the fuse F1 is connected to the iron core inductor L2, a varistor ZNR1 is connected between the common point of the fuse F1 and the iron core inductor L2 and the neutral wire, the other end of the iron core inductor L2 is connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is connected to the positive electrode of the diode D2, the negative electrode of the diode D2 is connected to the iron core inductor L3, the common point of the diode D2 and the iron core inductor L3 is connected to the positive electrode of the polarized capacitor C1, the negative electrode of the polarized capacitor C1 is connected to the neutral wire, the other end of the iron core inductor L3 is connected to the input terminal of the switching power supply chip U2, the common point of the iron core inductor L3 and the switching power supply chip U2 is connected to the positive electrode of the polarized capacitor C7, the negative electrode of the polarized capacitor C7 is connected to the neutral wire, a resistor R1 and a resistor R2 are connected between the input terminal of the switching power supply chip U2 and the VDD terminal of the switching power supply chip U2, the FB terminal of the switching power supply chip U2 is connected to the negative electrode of the diode D4, the positive electrode of the diode D4 is connected to the neutral wire, a resistor R9 is connected between the GND terminal of the switching power supply chip U2 and the CS terminal of the switching power supply, the GND terminal of the switching power supply chip U2 is connected to the iron core inductor L1, the other end of the iron core inductor L1 is connected to the positive electrode of the polarized capacitor C2, the negative electrode of the polarized capacitor C2 is connected to the positive electrode of the diode D3, the negative electrode of the diode D3 is connected to the negative electrode of the polarized capacitor C4, the positive electrode of the polarized capacitor C4 is connected to the VDD terminal of the switching power supply chip U2, and a resistor R13 is connected between the signal output terminal of the switching power supply module and the ground.

[0040] In this embodiment, the switching power supply module can convert the input AC voltage into a stable 5V DC voltage through the switching power supply chip for the central control module to drive and use, so as to realize subsequent functions such as dust detection and dust display;

[0041] Among them, the diodes D1 and D2 are connected in series, which can achieve more reliable unidirectional conductivity, and at the same time can also reduce the voltage drop in the circuit and improve the rectification efficiency of the switching power supply module;

[0042] The iron core inductor can reduce the energy loss in the rectification process, improve the rectification efficiency, and at the same time can reduce the fluctuation of the output voltage after rectification, which helps to output a stable DC voltage.

[0043] Further, as a preferred implementation manner rather than a limitation of this solution, the model of the switching power supply chip U2 is OB2222LMCP. In specific implementation, the switching power supply chip U2 can also be replaced by other models of switching power supply chips.

[0044] In this embodiment, the switching power supply chip OB2222LMCP is a high-performance, high-precision, and low-cost PWM power switch for non-isolated buck and boost. The OB2222LMCP can provide power-on soft start control, protection functions, and automatic recovery functions. The OB2222LMCP also has cycle-by-cycle current limit, output short-circuit protection, open-loop protection of the FB pin, VDD overvoltage protection, overload protection, and VDD undervoltage lockout protection.

[0045] Further, as a preferred implementation manner rather than a limitation of this solution, the infrared detection module 300 includes an operational amplifier U4, an infrared emitting diode LED20, an infrared receiving diode LED21, resistors R18, R20, R21, R23, R24, R25, R26, a chip resistor RJ2, capacitors C8, C10, and C11. The positive electrode of the infrared emitting diode LED20 is connected to the detection signal terminal of the central control module through a resistor R26. The negative electrode of the infrared emitting diode LED20 is connected to the positive electrode of the infrared receiving diode LED21. The negative electrode of the infrared receiving diode LED21 is connected to the common point of the resistor R18, the capacitor C10, and the capacitor C11. The other end of the resistor R18 is connected to the output terminal of the switching power supply module. The other end of the capacitor C11 is grounded. The other end of the capacitor C10 is connected to the IN1- terminal of the operational amplifier U4. The enable terminal of the operational amplifier U4 is connected to the output terminal of the switching power supply module. The enable terminal of the operational amplifier U4 is connected with a pull-up capacitor C8. The IN1+ terminal of the operational amplifier U4 is connected to the output terminal of the switching power supply module through a resistor R23. The IN1+ terminal of the operational amplifier U4 is connected with a pull-up resistor R24. A chip resistor RJ2 is connected between the OUT1 terminal and the IN2+ terminal of the operational amplifier U4. A resistor R21 is connected between the IN2- terminal of the operational amplifier U4 and the output terminal of the switching power supply module. The IN2- terminal of the operational amplifier U4 is connected with a pull-up resistor R25. A resistor R20 is connected between the OUT2 terminal of the operational amplifier U4 and the detection signal acquisition terminal of the central control module.

[0046] In this embodiment, the infrared emitting diode and the infrared receiving diode can achieve non-contact detection, avoiding the interference of the surrounding environment, improving the accuracy of dust detection. At the same time, the infrared beam emitted by the infrared emitting diode has strong anti-interference ability and is not easily interfered by other light sources, ensuring the reliability of dust detection; the operational amplifier of the infrared detection module can amplify the weak voltage signal output by the infrared receiving diode so that it can drive the subsequent control circuit. The operational amplifier can also shape the weak voltage signal and suppress electromagnetic interference to ensure a stable output of the amplified signal.

[0047] Further, as a preferred implementation manner of this solution rather than a limitation, the model of the operational amplifier U4 is LM358. In specific implementation, the operational amplifier U4 can also be replaced by operational amplifiers of other models.

[0048] In this embodiment, the operational amplifier LM358 is a dual-channel operational amplifier. The LM358 simplifies the circuit design by using enhanced features such as unity-gain stability, lower offset voltage, and lower quiescent current. The LM358 can also be applied to power supplies and mobile chargers, motor control, uninterruptible power supplies, and frequency converters.

[0049] Further, as a preferred implementation manner of this solution rather than a limitation, the display module 400 includes a digital tube display unit and an LED display unit. The signal input end of the digital tube display unit is connected to the first signal output end of the central control module. The digital tube display unit is used to display the dust content of the current detection area according to the dust amount display signal. The signal input end of the LED display unit is connected to the second signal output end of the central control module. The LED display unit is used to turn on or off the LED lights according to the dust amount display signal to prompt the user whether the current detection area has been cleaned.

[0050] In this embodiment, the display module can let the user know the dust state of the current detection area through the display of the two-digit digital tube and the on / off of the LED lights. At the same time, it can also let the user intuitively know whether the current detection area has been cleaned, enabling the user to reduce the repeated cleaning of the cleaned area, saving the user's cleaning time, and improving the cleaning efficiency.

[0051] Further, as a preferred implementation manner rather than a limitation of this solution, the digital tube display unit includes a two-digit digital tube D1S1, a resistor R5, a resistor R6, a resistor R7, a resistor R10, a resistor R11, a resistor R12, and a resistor R15. The common end of the two-digit digital tube D1S1 is connected to the first signal output end of the central control module. A resistor R5 is connected between the A1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R6 is connected between the B1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R7 is connected between the C1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R10 is connected between the D1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R11 is connected between the E1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R12 is connected between the F1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R15 is connected between the G1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module.

[0052] Furthermore, as a preferred implementation manner rather than a limitation of this solution, the model of the two-digit digital tube D1S1 is MHDC3623SRBW. Specifically in implementation, the two-digit digital tube D1S1 can also be replaced by two-digit digital tubes of other models.

[0053] In this embodiment, the two-digit digital tube MHDC3623SRBW is a common cathode two-digit digital tube with high reliability and high stability. The MHDC3623SRBW includes two independent 7-segment displays, which can clearly display numbers and help to clearly display the current dust amount in the detection area.

[0054] Further, as a preferred implementation manner rather than a limitation of this solution, the LED display unit includes a light-emitting diode LED1, a light-emitting diode LED2, a resistor R3, and a resistor R4. The positive pole of the light-emitting diode LED1 is connected to the second signal output end of the central control module. A resistor R3 is connected between the negative pole of the light-emitting diode LED1 and the ground. The positive pole of the light-emitting diode LED2 is connected to the second signal output end of the central control module. A resistor R4 is connected between the negative pole of the light-emitting diode LED2 and the ground.

[0055] In this embodiment, the LED display unit uses the on or off of the light-emitting diode to prompt the user whether the current area has been cleaned, so that the user does not need to repeatedly clean the cleaned area, saving the user's cleaning time.

[0056] Further, as a preferred implementation manner rather than a limitation of this solution, the central control module 200 includes a control chip U3, and the model of the control chip U3 is CMS79FT616. In specific implementation, the control chip U3 can also be replaced by a control chip of other models.

[0057] In this embodiment, the control chip CMS79FT616 is an enhanced flash 8-bit COMS single-chip microcomputer, and the CMS79FT616 is built-in with 1 USART communication module, which can support synchronous master-slave mode and asynchronous full-duplex mode.

[0058] Further, as a preferred implementation manner rather than a limitation of this solution, the dust detection circuit further includes a motor drive module. The signal input end of the motor drive module is connected to the motor drive end of the central control module. The signal input end of the motor drive module is used to receive the drive control signal output by the central control module, and the signal output end of the motor drive module is used to drive the vacuum cleaner to suck dust according to the drive control signal.

[0059] Furthermore, as a preferred implementation manner rather than a limitation of this solution, the motor drive module 500 includes a thyristor optocoupler IC1, a thyristor BT1, a resistor R4, a resistor R9, a resistor R13, a resistor R16, a capacitor CX3, and a motor MOTO1. A resistor R9 is connected between the anode of the thyristor optocoupler IC1 and the motor drive end of the central control module. The cathode of the thyristor optocoupler IC1 is grounded. A resistor R16 is connected between the main electrode T2 of the thyristor optocoupler IC1 and the main electrode T2 of the thyristor BT1. The main electrode T1 of the thyristor optocoupler IC1 is connected to the control electrode of the thyristor BT1. A resistor R13 is connected between the control electrode of the thyristor BT1 and the main electrode T1 of the thyristor BT1. The main electrode T1 of the thyristor BT1 is connected to the live wire. The main electrode T2 of the thyristor BT1 is connected to one end of the motor MOTO1. The other end of the motor MOTO1 is connected to the neutral wire. An RC absorption unit is connected between the motor MOTO1 and the live wire. The RC absorption unit is a series connection of a resistor R4 and a capacitor CX3.

[0060] In this embodiment, the thyristor optocoupler and thyristor of the motor drive module provide electrical isolation between the power input and output. Even under high voltage or high current conditions, the safety and reliability of the control circuit can be ensured. By controlling the conduction or cut-off of the thyristor through the thyristor optocoupler, precise adjustment of the suction force of the vacuum cleaner can be achieved. At the same time, the thyristor optocoupler has a soft start function, which can reduce the current impact during motor startup and protect the motor from damage.

[0061] Further, as a preferred implementation manner of this solution rather than a limitation, the model of the thyristor optocoupler IC1 is MOC3021. Specifically in implementation, the thyristor optocoupler IC1 can also be replaced by thyristor optocouplers of other models.

[0062] In this embodiment, the thyristor optocoupler MOC3021 is an optocoupler composed of a GaAs infrared light-emitting diode and a zero-crossing phase photo bilateral thyristor of a single-crystal silicon chip. The MOC3021 has functions such as electrical isolation, signal transmission, and soft start. The MOC3021 can be applied to AC motor drivers, electromagnetic contactors, solid-state relays, and static power switches.

[0063] Further, as a preferred implementation manner of this solution rather than a limitation, the model of the thyristor BT1 is BT137-600E. Specifically in implementation, the thyristor BT1 can also be replaced by thyristor optocouplers of other models.

[0064] In this embodiment, the thyristor BT137-600E is a non-insulated sensitive gate bilateral triode thyristor. The BT137-600E has sensitive control pole trigger current, good trigger current consistency, and strong current impact resistance. The BT137-600E is mainly applied to control circuits such as temperature control, lighting control, DC motor speed regulation, and commutation.

[0065] The working principle of this embodiment is as follows:

[0066] A vacuum cleaner with dust detection and dust content display proposed by the present utility model. When the vacuum cleaner is used for vacuuming quilts, the detection circuit can detect whether the dust on the quilts has been cleaned up. The specific detection process is as follows:

[0067] The switch power supply module converts the input AC voltage into a stable 5V DC voltage through the switch power supply chip U2. The enable terminal of the control chip U3 is connected to the signal output terminal of the switch power supply module. The 5V DC voltage output by the switch power supply module drives the control chip U3 to start working;

[0068] At this time, when the start switch K1 of the vacuum cleaner is pressed, the motor drive terminal of the control chip U3 outputs a drive control signal to the motor drive module. After receiving the drive control signal, the motor drive module makes the thyristor optocoupler IC1 conduct through the current limiting of the resistor R9. After the thyristor optocoupler IC1 conducts, a voltage difference is formed between the control pole and the main electrode of the thyristor BT1, making the thyristor BT1 conduct, the motor MOTO1 conduct, and the vacuum cleaner starts to vacuum;

[0069] While the vacuum cleaner starts to suck dust, the detection signal terminal of the control chip U3 will control the infrared detection module to start detecting. The infrared emitting diode LED20 and the infrared receiving diode LED21 of the infrared detection module are arranged on both sides of the vacuum cleaner air duct. When dust passes through the air duct, the intensity of the infrared light received by the infrared receiving diode LED21 will change due to the blocking or scattering of the dust, thereby causing a weak voltage change in the infrared receiving diode LED21. The operational amplifier U4 amplifies the weak voltage signal output by the infrared receiving diode LED21. After the detection signal acquisition terminal of the control chip U3 receives the amplified detection signal of the operational amplifier U4, the dust content of the current detection area is displayed through the digital tube display unit and the LED display unit of the display module to prompt the user whether the current area is cleaned up. The specific prompting process is as follows:

[0070] If no dust content is detected in the current area, neither the light-emitting diode LED1 nor the light-emitting diode LED2 lights up, and the two-digit digital tube D1S1 displays 0, thereby prompting the user that the current area has been cleaned up;

[0071] If dust content is detected in the current area and the value displayed on the two-digit digital tube D1S1 is between 1 and 50, the light-emitting diode LED1 lights up and the light-emitting diode LED2 does not light up, thereby prompting the user that the dust content in the current area is relatively small;

[0072] If dust content is detected in the current area and the value displayed on the two-digit digital tube D1S1 is between 51 and 99, the light-emitting diode LED1 and the light-emitting diode LED2 light up simultaneously, thereby prompting the user that the dust content in the current area is relatively large and not cleaned up.

[0073] Those of ordinary skill in the art should understand that as described above is an implementation manner provided in combination with specific content, and it is not considered that the specific implementation of the present invention is only limited to these descriptions. At the same time, due to different industry names, it is not limited to the above names, nor limited to English names. Any approximation or similarity to the method, structure, etc. of the present invention, or any technical deduction or replacement made under the premise of the concept of the present invention, should be regarded as the protection scope of the present invention.

Claims

1. A vacuum cleaner with dust detection and dust content display, characterized in that, It includes a switching power supply module, a central control module, an infrared detection module and a display module; The signal output end of the switching power supply module is connected to the enable end of the central control module, and the switching power supply module is used to provide a stable DC voltage for the control system; The signal input end of the infrared detection module is connected to the detection signal end of the central control module, and the signal output end of the infrared detection module is connected to the detection signal acquisition end of the central control module. The infrared detection module is used to output a dust amount detection signal of the detection area; The central control module is used to output a corresponding dust amount display signal according to the dust amount detection signal; The signal input end of the display module is connected to the signal output end of the central control module, and the signal output end of the display module is used to display the dust content of the current detection area according to the dust amount display signal.

2. The vacuum cleaner with dust detection and dust content display according to claim 1, characterized in that, The display module includes: A digital tube display unit, the signal input end of the digital tube display unit is connected to the first signal output end of the central control module, and the digital tube display unit is used to display the dust content of the current detection area according to the dust amount display signal; An LED display unit, the signal input end of the LED display unit is connected to the second signal output end of the central control module, and the LED display unit is used to turn on or off the LED lights according to the dust amount display signal to prompt the user whether the current detection area is cleaned up.

3. The vacuum cleaner with dust detection and dust content display according to claim 2, characterized in that, The digital tube display unit includes a two-digit digital tube D1S1, resistors R5, R6, R7, R10, R11, R12 and R15. The common end of the two-digit digital tube D1S1 is connected to the first signal output end of the central control module. A resistor R5 is connected between the A1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R6 is connected between the B1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R7 is connected between the C1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R10 is connected between the D1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R11 is connected between the E1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R12 is connected between the F1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module. A resistor R15 is connected between the G1 pin of the two-digit digital tube D1S1 and the I / O port of the central control module.

4. A vacuum cleaner with dust detection and dust content display according to claim 2, characterized in that, The LED display unit includes light-emitting diodes LED1, LED2, resistors R3 and R4. The positive pole of the light-emitting diode LED1 is connected to the second signal output end of the central control module, and a resistor R3 is connected between the negative pole of the light-emitting diode LED1 and the ground. The positive pole of the light-emitting diode LED2 is connected to the second signal output end of the central control module, and a resistor R4 is connected between the negative pole of the light-emitting diode LED2 and the ground.

5. A vacuum cleaner with dust detection and dust content display according to claim 1, characterized in that, The central control module includes a control chip U3, and the model of the control chip U3 is CMS79FT616.

6. The vacuum cleaner with dust detection and dust content display according to claim 1, wherein, The switching power supply module includes a switching power supply chip U2, a fuse F1, a varistor ZNR1, an iron core inductor L1, an iron core inductor L2, an iron core inductor L3, a diode D1, a diode D2, a diode D3, a diode D4, a polarized capacitor C1, a polarized capacitor C2, a polarized capacitor C4, a polarized capacitor C7, a resistor R1, a resistor R2, a resistor R9, and a resistor R13. One end of the fuse F1 is connected to the live wire, and the other end of the fuse F1 is connected to the iron core inductor L2. A varistor ZNR1 is connected between the common point of the fuse F1 and the iron core inductor L2 and the neutral wire. The other end of the iron core inductor L2 is connected to the positive electrode of the diode D1. The negative electrode of the diode D1 is connected to the positive electrode of the diode D2. The negative electrode of the diode D2 is connected to the iron core inductor L3. The common point of the diode D2 and the iron core inductor L3 is connected to the positive electrode of the polarized capacitor C1. The negative electrode of the polarized capacitor C1 is connected to the neutral wire. The other end of the iron core inductor L3 is connected to the input terminal of the switching power supply chip U2. The common point of the iron core inductor L3 and the switching power supply chip U2 is connected to the positive electrode of the polarized capacitor C7. The negative electrode of the polarized capacitor C7 is connected to the neutral wire. A resistor R1 and a resistor R2 are connected between the input terminal of the switching power supply chip U2 and the VDD terminal of the switching power supply chip U2. The FB terminal of the switching power supply chip U2 is connected to the negative electrode of the diode D4. The positive electrode of the diode D4 is connected to the neutral wire. A resistor R9 is connected between the GND terminal of the switching power supply chip U2 and the CS terminal of the switching power supply. The GND terminal of the switching power supply chip U2 is connected to the iron core inductor L1. The other end of the iron core inductor L1 is connected to the positive electrode of the polarized capacitor C2. The negative electrode of the polarized capacitor C2 is connected to the positive electrode of the diode D3. The negative electrode of the diode D3 is connected to the negative electrode of the polarized capacitor C4. The positive electrode of the polarized capacitor C4 is connected to the VDD terminal of the switching power supply chip U2. A resistor R13 is connected between the signal output terminal of the switching power supply module and the ground.

7. A vacuum cleaner with dust detection and dust content display according to claim 1, characterized in that, The infrared detection module includes an operational amplifier U4, an infrared emitting diode LED20, an infrared receiving diode LED21, a resistor R18, a resistor R20, a resistor R21, a resistor R23, a resistor R24, a resistor R25, a resistor R26, a chip resistor RJ2, a capacitor C8, a capacitor C10, and a capacitor C11. The positive electrode of the infrared emitting diode LED20 is connected to the detection signal terminal of the central control module through a resistor R26. The negative electrode of the infrared emitting diode LED20 is connected to the positive electrode of the infrared receiving diode LED21. The negative electrode of the infrared receiving diode LED21 is connected to the common point of the resistor R18, the capacitor C10, and the capacitor C11. The other end of the resistor R18 is connected to the output terminal of the switching power supply module. The other end of the capacitor C11 is grounded. The other end of the capacitor C10 is connected to the IN1- terminal of the operational amplifier U4. The enable terminal of the operational amplifier U4 is connected to the output terminal of the switching power supply module. A pull-up capacitor C8 is connected to the enable terminal of the operational amplifier U4. The IN1+ terminal of the operational amplifier U4 is connected to the output terminal of the switching power supply module through a resistor R23. A pull-up resistor R24 is connected to the IN1+ terminal of the operational amplifier U4. A chip resistor RJ2 is connected between the OUT1 terminal and the IN2+ terminal of the operational amplifier U4. A resistor R21 is connected between the IN2- terminal of the operational amplifier U4 and the output terminal of the switching power supply module. A pull-up resistor R25 is connected to the IN2- terminal of the operational amplifier U4. A resistor R20 is connected between the OUT2 terminal of the operational amplifier U4 and the detection signal acquisition terminal of the central control module.

8. A vacuum cleaner with dust detection and dust content display according to claim 7, characterized in that, The model of the operational amplifier U4 is LM358.

9. The vacuum cleaner with dust detection and dust content display according to claim 1, characterized in that, It further includes a motor drive module. The signal input terminal of the motor drive module is connected to the motor drive terminal of the central control module. The signal input terminal of the motor drive module is used to receive the drive control signal output by the central control module. The signal output terminal of the motor drive module is used to drive the vacuum cleaner to suck dust according to the drive control signal.

10. A vacuum cleaner with dust detection and dust content display according to claim 9, characterized in that, The motor drive module includes a thyristor optocoupler IC1, a thyristor BT1, a resistor R4, a resistor R9, a resistor R13, a resistor R16, a capacitor CX3, and a motor MOTO1. A resistor R9 is connected between the anode of the thyristor optocoupler IC1 and the motor drive terminal of the central control module. The cathode of the thyristor optocoupler IC1 is grounded. A resistor R16 is connected between the main electrode T2 of the thyristor optocoupler IC1 and the main electrode T2 of the thyristor BT1. The main electrode T1 of the thyristor optocoupler IC1 is connected to the control electrode of the thyristor BT1. A resistor R13 is connected between the control electrode of the thyristor BT1 and the main electrode T1 of the thyristor BT1. The main electrode T1 of the thyristor BT1 is connected to the live wire. The main electrode T2 of the thyristor BT1 is connected to one end of the motor MOTO1. The other end of the motor MOTO1 is connected to the neutral wire. An RC absorption unit is connected between the motor MOTO1 and the live wire. The RC absorption unit is composed of a resistor R4 and a capacitor CX3 connected in series.

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