A dirty particle value recognition device for a vacuum cleaner

Abstract

The utility model relates to the technical field of dust collector circuit, specifically relates to a dust collector dirty particle value recognition device, and technical solution main points include infrared transceiver detection module, singlechip module, infrared transceiver detection module has detection signal output end, detection signal output end passes through at least one signal classification judging module, and the output end of each signal classification judging module is connected the external interrupt pin of singlechip module respectively, and singlechip module is used for obtaining the trigger signal of signal classification judging module and carries out counting, and the counting data that each signal classification judging module output is stored in the memory module in singlechip module by singlechip module respectively.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum cleaner circuits, specifically to a device for identifying the dirt particle value of a vacuum cleaner. Background Technology

[0002] With the increasing popularity of smart homes, vacuum cleaners, as an important component of cleaning equipment, are constantly improving their level of intelligence. Currently, vacuum cleaners utilize built-in dirt sensors (such as dust sensors) to intelligently adjust fan speed and automatically plan cleaning paths. For example, Philips vacuum cleaners are equipped with floor sensors, dust sensors, and obstacle sensors. The dust sensor, which monitors the dust level on the floor in real time and adjusts suction power, is widely used in vacuum cleaners and robotic vacuums.

[0003] However, existing technologies still have the following limitations: traditional sensors (infrared transceiver detection modules) mostly use infrared or laser scattering principles, and the signals are not effectively processed, making it difficult to distinguish particles of different sizes, which makes it impossible for vacuum cleaners to adjust suction power accordingly. Utility Model Content

[0004] To address the technical problems and shortcomings of existing technologies, this invention provides a dust collector dirt particle value identification device that overcomes the technical problem of difficulty in distinguishing the size and quantity of dirt particles when using infrared photocells. It can effectively improve the accuracy of dirt particle value identification by using signal classification comparison and processing.

[0005] To achieve the above and other related objectives, the present invention adopts the following technical solution: A dust collector dirt particle value identification device includes an infrared transceiver detection module and a microcontroller module. The infrared transceiver detection module has a detection signal output terminal, which is connected to at least one signal classification and judgment module. The output terminal of each signal classification and judgment module is connected to the external interrupt pin of the microcontroller module. The microcontroller module is used to acquire the trigger signal of the signal classification and judgment module and count it. The count data output by each signal classification and judgment module is stored by the microcontroller module in the memory module of the microcontroller module. The signal classification and judgment module includes a comparison module and a threshold setting module. The comparator module includes a comparator and a feedback circuit. The inverting input of the comparator is connected to the detection signal output. The output of the comparator is connected to the non-inverting input of the comparator through the feedback circuit. The non-inverting input of the comparator is also connected to the threshold setting module. The output of the comparator is connected to the external interrupt pin of the microcontroller.

[0006] Preferably, the feedback circuit includes resistors R1, R2, and R5, capacitors C1 and C2. One end of resistor R1 is connected to the output terminal of the comparator, and the other end of resistor R1 is connected to one end of resistor R5 and one end of capacitor C1. The other end of resistor R5 is connected to one end of resistor R2, one end of capacitor C2, and the non-inverting input terminal of the comparator. The other ends of resistor R2, capacitor C2, and capacitor C1 are grounded.

[0007] Preferably, the threshold setting module includes a voltage source, a voltage regulator, a resistor R11, a capacitor C11, and an adjustable potentiometer. The voltage source is connected to one end of the resistor R11, and the other end of the resistor R11 is connected to the cathode of the voltage regulator, the control terminal of the voltage regulator, one end of the capacitor C11, and one end of the adjustable potentiometer. The anode of the voltage regulator, the other end of the capacitor C11, and the other end of the adjustable potentiometer are grounded. The adjustment terminal of the adjustable potentiometer is used to output a threshold signal.

[0008] Preferably, the number of threshold setting modules is the same as the number of comparison modules.

[0009] Preferably, the adjustable potentiometer in the threshold setting module includes multiple single potentiometers connected in series, and each single potentiometer has a single adjustment terminal for outputting a single threshold signal.

[0010] Preferably, the microcontroller module is also connected to a display screen, which is used to display the counting data.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model can quickly identify the size of dirt particles on a vacuum cleaner by classifying and judging the detection signal. Multiple judgment categories can be set, and the calibration values ​​are: calibrated threshold values ​​for 10um, 50um, 200um, and 500um dust particles. In conjunction with the external interrupt (function) pin on the microcontroller module, pulse counting statistics are performed, and these data are stored. Using a comparator and feedback circuit, a positive feedback signal is formed, which can amplify the signal and improve the reliability of judgment.

[0012] 2. In this utility model, the threshold setting module can individually adjust and set the value of each threshold signal to adapt to different application environments and identify different dirt particles; 3. This utility model adopts a positive feedback signal processing method, which improves the reliability of signal recognition, effectively amplifies the signal, and facilitates recognition; 4. In order to save hardware costs, this utility model can reuse some circuits in the threshold setting module, and also uses multiple single potentiometers connected in series to force the preset threshold signal value to be set from large to small, avoiding the phenomenon of disordered values ​​in multiple setting processes, thereby improving the reliability of operation.

[0013] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the main circuit of an embodiment of this application; Figure 2 This is a schematic diagram of the threshold setting module circuit of Embodiment 1 of this application; Figure 3 This is a schematic diagram of the threshold setting module circuit of Embodiment 2 of this application.

[0015] Explanation of reference numerals for major components: 100. Infrared transceiver detection module; 101. Detection signal output terminal; 200. Microcontroller module; 300. Signal classification and judgment module; 310. Comparison module; 311. Comparator; 312. Feedback circuit; 320. Threshold setting module; 400. Display screen. Detailed Implementation

[0016] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. The following specific examples illustrate the embodiments of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0017] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be changed at will, and the layout of the components may also be more complex.

[0018] It should be noted that in the description of this application, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention. Furthermore, it should be noted that in the description of this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the invention based on the specific circumstances. Example

[0019] This invention discloses a device for identifying the dirt particle value of a vacuum cleaner, comprising an infrared transceiver detection module 100 and a microcontroller module 200 (an existing circuit device module). The infrared transceiver detection module 100 outputs a detected analog signal. In one operating state, it detects dirt particles; the larger the particle value, the greater the output analog signal strength. The microcontroller module 200 can be a 51 microcontroller or other types of microprocessors.

[0020] The infrared transceiver detection module 100 has a detection signal output terminal 101. The detection signal output terminal 101 is connected to at least one signal classification and judgment module 300. The output terminal of each signal classification and judgment module 300 is connected to the external interrupt pin of the microcontroller module 200. The microcontroller module 200 is used to acquire the trigger signal of the signal classification and judgment module 300 and perform counting. The counting data output by each signal classification and judgment module 300 is stored by the microcontroller module 200 in its memory module. In this scheme, four signal classification and judgment modules 300 are set. The external interrupt pin of the microcontroller is its functional pin, which can perform counting sampling; this description focuses on the hardware connection structure. The purpose of the microcontroller module 200 is to perform signal counting acquisition and data storage.

[0021] In terms of hardware structure, refer to Figure 1As shown, the signal classification and judgment module 300 includes a comparison module 310 and a threshold setting module 320. The comparator 311 module includes a comparator 311 and a feedback circuit 312. The inverting input terminal of the comparator 311 is connected to the detection signal output terminal 101, and the output terminal of the comparator 311 is connected to the non-inverting input terminal of the comparator 311 through the feedback circuit 312. The non-inverting input terminal of the comparator 311 is also connected to the threshold setting module 320, and the output terminal of the comparator 311 is connected to the external interrupt pin of the microcontroller.

[0022] Specifically, the feedback circuit 312 includes resistors R1, R2, and R5, and capacitors C1 and C2. One end of resistor R1 is connected to the output of comparator 311, and the other end of resistor R1 is connected to one end of resistor R5 and one end of capacitor C1. The other end of resistor R5 is connected to one end of resistor R2, one end of capacitor C2, and the non-inverting input of comparator 311. The other ends of resistor R2, capacitor C2, and capacitor C1 are grounded. Through the feedback circuit 312, the signal output by comparator 311 can be positively fed back to the non-inverting input of comparator 311, thereby amplifying the signal output and completing the signal comparison.

[0023] refer to Figure 2 As shown, the threshold setting module 320 includes a voltage source, a voltage regulator, a resistor R11, a capacitor C11, and an adjustable potentiometer. The voltage source is connected to one end of the resistor R11, and the other end of the resistor R11 is connected to the cathode of the voltage regulator, the control terminal of the voltage regulator, one end of the capacitor C11, and one end of the adjustable potentiometer. The anode of the voltage regulator, the other end of the capacitor C11, and the other end of the adjustable potentiometer are grounded. The adjustment terminal of the adjustable potentiometer is used to output a threshold signal. In this embodiment, Figure 2 The threshold setting module 320 shown has four modules with identical circuit structures, but the adjustable potentiometers have different resistance values. Based on the set resistance value, Tn has four setting outputs: T1, T2, T3, and T4, thus combining... Figure 1 As can be seen, different signal settings are achieved. The voltage regulator here uses the TL431 chip U1. The voltage source can be 3.3V, thus outputting a 2.5V voltage, which is further regulated by capacitor C11. At this time, the adjustable potentiometer R12 sets a voltage range through resistor voltage division. This voltage range can be adjusted from 0 to 2.5V, allowing selection of a position to represent a threshold signal. The number of threshold setting modules 320 is the same as the number of comparison modules 310.

[0024] The microcontroller module 200 is also connected to a display screen 400, which is used to display the counting data. Example

[0025] As can be seen from Example 1, in the above circuit, the threshold setting module 320 has a high hardware cost, and setting an adjustable potentiometer separately can easily lead to sequencing errors. In the above scheme, it is necessary to consider the setting value of T1 > T2 > T3 > T4. However, in actual operation, there are often erroneous operations that cause the setting value of T2 to be less than the setting value of T3, etc.

[0026] To avoid the above problems, this solution is further optimized, with reference to... Figure 3 As shown, the adjustable potentiometer in the threshold setting module 320 includes multiple individual potentiometers connected in series. Each individual potentiometer has a single adjustment terminal used to output a single threshold signal. By connecting the individual potentiometers in series, the individual potentiometers R121, R122, R123, and R124 output a voltage divider. Regardless of how the individual potentiometers are adjusted, the set value of T1 will always be greater than the set value of T2, which in turn will be greater than the set value of T3, which will always be greater than the set value of T4, thus avoiding accidental operation.

[0027] Therefore, this utility model can quickly identify the size of dirt particles on a vacuum cleaner by classifying and judging the detection signal. Multiple judgment categories can be set, and the calibration values ​​are: calibrated threshold values ​​for 10um, 50um, 200um, and 500um dust particles. In conjunction with the external interrupt (function) pin on the microcontroller module 200, pulse counting and statistics are performed, and these data are stored. Using the comparator 311 and the feedback circuit 312, a positive signal feedback is formed, which can amplify the signal and improve the reliability of the judgment.

[0028] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust collector dirt particle value identification device, comprising an infrared transceiver detection module (100) and a microcontroller module (200), wherein the infrared transceiver detection module (100) has a detection signal output terminal (101), characterized in that, The detection signal output terminal (101) is connected to at least one signal classification and judgment module (300). The output terminal of each signal classification and judgment module (300) is connected to the external interrupt pin of the microcontroller module (200). The microcontroller module (200) is used to obtain the trigger signal of the signal classification and judgment module (300) and count it. The count data output by each signal classification and judgment module (300) is stored by the microcontroller module (200) in the memory module of the microcontroller module (200). The signal classification and judgment module (300) includes a comparison module (310) and a threshold setting module (320). The comparator (311) module includes a comparator (311) and a feedback circuit (312). The inverting input terminal of the comparator (311) is connected to the detection signal output terminal (101). The output terminal of the comparator (311) is connected to the non-inverting input terminal of the comparator (311) through the feedback circuit (312). The non-inverting input terminal of the comparator (311) is also connected to the threshold setting module (320). The output terminal of the comparator (311) is connected to the external interrupt pin of the microcontroller.

2. The dust particle value identification device for a vacuum cleaner according to claim 1, characterized in that, The feedback circuit (312) includes resistors R1, R2, and R5, capacitors C1 and C2. One end of resistor R1 is connected to the output of comparator (311), and the other end of resistor R1 is connected to one end of resistor R5 and one end of capacitor C1. The other end of resistor R5 is connected to one end of resistor R2, one end of capacitor C2 and the non-inverting input of comparator (311). The other ends of resistor R2, capacitor C2 and capacitor C1 are grounded.

3. The dust particle value identification device for a vacuum cleaner according to claim 1, characterized in that, The threshold setting module (320) includes a voltage source, a voltage regulator, a resistor R11, a capacitor C11, and an adjustable potentiometer. The voltage source is connected to one end of the resistor R11, and the other end of the resistor R11 is connected to the cathode of the voltage regulator, the control terminal of the voltage regulator, one end of the capacitor C11, and one end of the adjustable potentiometer. The anode of the voltage regulator, the other end of the capacitor C11, and the other end of the adjustable potentiometer are grounded. The adjustment terminal of the adjustable potentiometer is used to output a threshold signal.

4. The dust particle value identification device for a vacuum cleaner according to claim 3, characterized in that, The number of threshold setting modules (320) is the same as the number of comparison modules (310).

5. The dust particle value identification device for a vacuum cleaner according to claim 3, characterized in that, The adjustable potentiometer in the threshold setting module (320) includes multiple single potentiometers connected in series, and each single potentiometer has a single adjustment terminal for outputting a single threshold signal.

6. The dust particle value identification device for a vacuum cleaner according to claim 1, characterized in that, The microcontroller module (200) is also connected to a display screen (400), which is used to display counting data.

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