CN110881898B - Suction head identification method for dust collector and dust collector - Google Patents
Suction head identification method for dust collector and dust collector Download PDFInfo
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- CN110881898B CN110881898B CN201811056764.7A CN201811056764A CN110881898B CN 110881898 B CN110881898 B CN 110881898B CN 201811056764 A CN201811056764 A CN 201811056764A CN 110881898 B CN110881898 B CN 110881898B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
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- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
The embodiment provides a suction head identification method for a dust collector and the dust collector, which belong to the field of household appliances, and when a sample suction head is communicated with a dust collector body, a low-voltage power supply end in the dust collector body and a sample suction head circuit are conducted; acquiring a voltage sampling value at a voltage sampling position of the dust collector body; and determining the model of the sample suction head corresponding to the voltage sampling value by combining the stored identification voltage value. By disconnecting the suction head motor from the low-voltage power supply end, under the voltage division state of the voltage division circuit, the type of the currently connected sample suction head is judged by combining the acquired voltage sampling value with the prestored identification voltage value, and because the additionally arranged voltage division circuit uses few elements, the occupied space can be reduced compared with the mode of additionally arranging a communication circuit; compared with the mode of adopting a parallel circuit to divide voltage, the suction head motor with very small internal resistance is excluded from the whole circuit in the identification process, so that the influence of insufficient voltage division caused by too small internal resistance of the suction head motor can be eliminated, and the actual requirement is met.
Description
Technical Field
The invention belongs to the field of household appliances, and particularly relates to a suction head identification method for a dust collector and the dust collector.
Background
The current mainstream vacuum cleaners can be matched with a plurality of different suction heads so as to adapt to different use scenes. In order to adapt to different use scenes, the internal structure of each suction head is different, which results in that the dust collector needs to output different control modes to drive different types of suction heads according to the types of the suction heads.
In the prior art, two modes of adding a communication identification circuit and dividing voltage through a parallel circuit are adopted to realize the identification of the type of the suction head. However, the former needs to occupy a large space, and identification circuits cannot be arranged in some small suction heads; in the latter, because the internal resistance of the motor of the sucker motor is too small, the voltage variation condition of parallel partial voltage is not obvious, and the actual requirement cannot be met.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides a suction head identification method for a dust collector and the dust collector.
In order to achieve the above technical object, the present invention provides a nozzle identifying method for a vacuum cleaner in which an identifying voltage value corresponding to each model of a nozzle is stored, the nozzle identifying method comprising:
when the sample suction head is communicated with the dust collector body, the control chip in the dust collector body is conducted with the electric connection of the sample suction head circuit;
acquiring a voltage sampling value at a voltage sampling position of the dust collector body based on a voltage division circuit in a sample suction head circuit;
and determining the model of the sample suction head corresponding to the voltage sampling value by combining the stored identification voltage value.
Optionally, before the control chip in the cleaner body is electrically connected to the sample nozzle circuit, the battery in the cleaner is electrically disconnected from the sample nozzle circuit.
Optionally, after the control chip in the vacuum cleaner body is electrically connected with the sample suction head circuit, a first voltage value is obtained at the voltage sampling position;
under the action of the first voltage value, the electric connection between the sample sucker motor and the control chip is disconnected through an isolation circuit in the sample sucker circuit.
Optionally, a flow control element for preventing reverse flow is arranged at the connection position of the control chip and the battery.
Optionally, a voltage dividing element is provided at the voltage sampling location.
Optionally, the first voltage value is a voltage sampling value obtained at a voltage sampling position after the sample voltage output by the control chip is divided by the voltage dividing circuit and the voltage dividing element.
Optionally, the tip identification method includes:
after the model of the sample suction head is determined, the electric connection between a battery and a sample suction head circuit in the dust collector is conducted, the battery outputs a control mode corresponding to the model of the sample suction head to drive the sample suction head to work, and a low-voltage power supply end in the dust collector body is disconnected with the electric connection between the sample suction head circuit and the low-voltage power supply end.
Optionally, after the electric connection between the battery in the vacuum cleaner and the sample suction head circuit is conducted, a second voltage division value is obtained at the voltage division circuit;
under the action of the second voltage division value, an isolation circuit in the sample sucker circuit fails, and the sample sucker motor is conducted to be electrically connected with the battery.
Optionally, a filter element is disposed between the voltage divider circuit and the isolation circuit.
In another aspect, the present invention also provides a vacuum cleaner having:
the operation part controls the connection and disconnection of the circuit in the dust collector;
and an acquisition unit for acquiring the voltage sampling value and determining the model of the sample tip corresponding to the voltage sampling value by combining the stored identification voltage value.
The technical scheme provided by the invention has the beneficial effects that:
the suction head motor control circuit connected with the control chip is required to be arranged between the battery and the low-voltage power supply end to switch the access states of the low-voltage power supply end and the battery, the connection between the suction head motor and the low-voltage power supply end is disconnected, and only the low-voltage power supply end and the voltage division circuit are conducted, so that the type of the currently communicated sample suction head is judged according to the voltage sampling value obtained at the voltage sampling position in the voltage division state of the voltage division circuit and the prestored identification voltage value; compared with the mode of adopting a parallel circuit to divide voltage in the prior art, the suction head motor with very small internal resistance is excluded from the whole circuit in the identification process, so that the influence of insufficient voltage division caused by too small internal resistance of the suction head motor can be eliminated, and the actual requirement is met.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method of identifying a cleaner head for a vacuum cleaner according to the present invention;
FIG. 2 is a first schematic diagram showing the electrical connection between the cleaner body and the cleaner head according to the present invention;
FIG. 3 is a schematic flow chart showing details of a tip identification method according to the present invention;
FIG. 4 is a second schematic diagram showing the electrical connection relationship between the cleaner body and the cleaner head provided by the present invention;
FIG. 5 is a schematic flow chart of a tip driving method provided by the present invention;
fig. 6 is a schematic structural view of the vacuum cleaner provided by the invention.
Detailed Description
The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the present embodiment, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
The embodiment provides a suction head identification method for a dust collector, which can judge the type of a suction head currently connected to a dust collector body according to a voltage sampling value obtained at a voltage sampling position.
Example one
The invention provides a suction head identification method for a dust collector, wherein an identification voltage value corresponding to each suction head model is stored in the dust collector, and the suction head identification method comprises the following steps:
11. when the sample suction head is communicated with the dust collector body, the low-voltage power supply end in the dust collector body is conducted to be electrically connected with the sample suction head circuit;
12. acquiring a voltage sampling value at a voltage sampling position of the dust collector body based on a voltage division circuit in a sample suction head circuit;
13. and determining the model of the sample suction head corresponding to the voltage sampling value by combining the stored identification voltage value.
In practice, in order to determine the model of the cleaner head based on the voltage sample values, it is necessary to store in the cleaner in advance a correspondence between the model of the cleaner head and the identification voltage values, for example:
cotton quilt removes mite suction head: the suction head identification voltage value is 4.10V-4.29V
Floor dust absorption suction head: the identification voltage value of the suction head is 2.99V-3.36V
Wet wiping suction head of floor: the suction head identification voltage value is 1.27V-1.72V
Therefore, when the voltage sampling value is acquired in step 12, the specific type of the current tip can be determined according to the condition that the voltage sampling value falls within the identification voltage value range.
When the sample suction head of which the type is required to be determined is communicated with the dust collector body, the suction head and the dust collector body are electrically connected through an extension pipe positioned between the suction head and the dust collector body, and at the moment, a control chip in the dust collector body is communicated with a sample suction head circuit. The low-voltage power supply end outputs a voltage with lower voltage to the sample sucker circuit, and a voltage sampling value is obtained at a voltage sampling position between the control chip and the voltage dividing circuit after the voltage dividing circuit in the sample sucker circuit. The model of the sample tip can be determined by comparing the obtained voltage sample value with a prestored identification voltage value.
The embodiment provides a suction head identification method for a dust collector, which comprises the following steps of conducting the electric connection between a low-voltage power supply end in a dust collector body and a sample suction head circuit when the sample suction head is communicated with the dust collector body; acquiring a voltage sampling value at a voltage sampling position of the dust collector body based on a voltage division circuit in a sample suction head circuit; and determining the model of the sample suction head corresponding to the voltage sampling value by combining the stored identification voltage value. Through the judging steps, the type of the suction head used at present can be accurately identified by the dust collector, so that the suction head can be driven by the voltage suitable for the current suction head in the subsequent use process, and the suction effect of the suction head is fully exerted.
Example two
Unlike the previous embodiment, this embodiment proposes a nozzle identification method for a vacuum cleaner based on a detailed circuit connection relationship.
The connection relationship between the circuit of the cleaner body and the circuit of the suction head suitable for this embodiment is shown in FIG. 2.
The circuit structure disclosed in fig. 2 includes a cleaner head, an extension pipe, and a cleaner body, which are divided by dotted lines. Wherein, in the sucker part, a sucker motor, an isolation circuit and a voltage division circuit are included; the cleaner body comprises a control chip, a battery and other components.
Based on the circuit structure disclosed in fig. 2, the tip identification method proposed in this embodiment is specifically shown in fig. 3:
31. and the control chip in the dust collector body is electrically connected with the sample sucker circuit, so that the battery in the dust collector is electrically disconnected with the sample sucker circuit.
32. When the sample suction head is communicated with the dust collector body, the low-voltage power supply end in the dust collector body is conducted to be electrically connected with the sample suction head circuit;
33. after the low-voltage power supply end in the dust collector body is electrically connected with the sample suction head circuit, a first voltage value is obtained at a voltage sampling position;
34. under the action of the first voltage value, the electric connection between the sample sucker motor and the control chip is disconnected through an isolation circuit in the sample sucker circuit.
35. And determining the model of the sample suction head corresponding to the first voltage sampling value by combining the stored identification voltage value.
In the implementation, in step 31, since the battery outputs a voltage of about 20V, the voltage change at the voltage sampling position after voltage division by the voltage dividing circuit is not obvious, and here, a voltage of 5V output by the low-voltage power supply terminal on the pin of the control chip needs to be used. In order to transmit the voltage of 5V to the voltage dividing circuit, the electrical connection between the battery and the voltage dividing circuit needs to be disconnected. Therefore, a suction head motor control circuit connected with the control chip is required to be arranged between the battery and the low-voltage power supply end for switching the access state of the battery. In this embodiment, the battery is disconnected and connected to the control chip and the sample tip circuit by the tip motor control circuit, i.e., step 22.
For descriptive purposes, the voltage divider circuit in this embodiment is shown by resistors R1 and R2 connected in series as shown in fig. 2, and a voltage divider element R3 and a diode D1 are provided at the voltage sampling point.
In consideration of the damage of the control chip caused by applying the battery voltage to the voltage sampling point during the switching of the battery access state by the sucker motor control circuit, a current control element for preventing the reverse flow is added at the connection point of the control chip and the battery in the circuit structure shown in fig. 2, and the current control element is described by taking a diode D1 as an example in the embodiment.
In step 33, after the voltage output by the 5V power supply terminal VDD is divided by the resistor R1, a first voltage value at the voltage sampling point is obtained, and based on the voltage dividing principle of the series circuit, the magnitude of the first voltage value V1 is:
in step 34, since the MOS is turned on according to the voltage value at the two ends of the R1, when the first voltage value V1 is smaller than the turn-on voltage of the isolation circuit, the isolation circuit MOS transistor Q1 is turned off, and the sample pipette motor is further electrically disconnected from the low voltage power supply terminal, at this time, in the whole series circuit formed by the R1, the R2, and the R3, the first voltage value is only affected by the three resistors, and is not related to the internal resistance of the sample pipette motor, so that if the type of the sample pipette needs to be identified, only the resistance values of the three resistors need to be reasonably adjusted.
Based on the above-mentioned findings, it is necessary to adjust the resistance values of the three resistors, particularly, the resistance values provided in the voltage dividing circuit, in the determination of the type of the sample tip.
The type identification of the sample tip is described below with reference to examples.
The body side: VDD is 5 ± 0.1V, R3 is 10k Ω, and battery voltage is 20V
1# suction head: cotton quilt removes mite suction head:
the MOS transistor included in the isolation circuit is TPC8113(Vth is 0.8V-2V), R1 is 6.8k omega, and R2 is 39k omega.
2# suction head: floor dust absorption suction head:
the MOS transistor included in the isolation circuit is TPC8113(Vth is 0.8V-2V), R1 is 3.3k omega, and R2 is 10k omega.
3# suction head: wet wiping suction head of floor:
the MOS transistor included in the isolation circuit is TPC8113(Vth is 0.8V-2V), R1 is 680 Ω, and R2 is 2.4k Ω. The control chip sets the voltage of the suction head state identification port:
cotton quilt removes mite suction head: the suction head identification voltage value is 4.10V-4.29V,
floor dust absorption suction head: the suction head identification voltage value is 2.99V-3.36V,
wet wiping suction head of floor: the suction head identification voltage value is 1.27V-1.72V.
1. When the suction head 1 installed on the cleaner body is started, the control chip is initialized, the suction head control loop is closed, the voltage applied to the suction head is the voltage divided by VDD through R3 and a diode, Vgs of an MOS (metal oxide semiconductor) tube is 0.59V and is smaller than the minimum starting voltage Vth _ min (0.8V) of the MOS tube, so that the MOS tube is not conducted, and the internal resistance of a suction head motor is isolated. The voltage value detected by the suction head identification port is 4.18V, and the fact that the cotton quilt mite removing suction head is installed is identified.
2. When the suction head 2 installed on the cleaner body is started, the control chip is initialized, the suction head control loop is closed, the voltage applied to the suction head is the voltage divided by VDD through R3 and a diode, Vgs of the MOS tube is 0.68V and is smaller than the minimum starting voltage Vth _ min (0.8V) of the MOS tube, so that the MOS tube is not conducted, and the internal resistance of a suction head motor is isolated. The voltage value detected by the suction head identification port is 3.15V, and the installation of the floor dust suction head is identified.
3. When the suction nozzle 3# installed on the cleaner body is opened, the control chip is initialized, the suction nozzle control loop is closed, the voltage applied to the suction nozzle is the voltage divided by VDD through R3 and a diode, Vgs of an MOS (metal oxide semiconductor) tube is 0.24V and is smaller than the minimum opening voltage Vth _ min (0.8V) of the MOS tube, so that the MOS tube is not conducted, and the internal resistance of a suction nozzle motor is isolated. The suction head identification port detects that the voltage value is 1.35V, and identifies that the floor wet wiping suction head is installed.
The embodiment provides a suction head identification method for a dust collector, which particularly comprises a circuit applying the identification method, wherein the circuit comprises three parts, namely a suction head, an extension pipe and a dust collector body. Wherein, in the sucker part, a sucker motor, an isolation circuit and a voltage division circuit are included; the cleaner body comprises a control chip, a battery and other components. The suction head motor control circuit connected with the control chip is required to be arranged between the battery and the low-voltage power supply end to switch the access states of the low-voltage power supply end and the battery, the connection between the suction head motor and the low-voltage power supply end is disconnected, and only the low-voltage power supply end and the voltage division circuit are conducted, so that the type of the currently communicated sample suction head is judged according to the voltage sampling value obtained at the voltage sampling position in the voltage division state of the voltage division circuit and the prestored identification voltage value; compared with the mode of adopting a parallel circuit to divide voltage in the prior art, the suction head motor with very small internal resistance is excluded from the whole circuit in the identification process, so that the influence of insufficient voltage division caused by too small internal resistance of the suction head motor can be eliminated, and the actual requirement is met.
EXAMPLE III
Unlike the previous embodiments, the method for identifying a cleaner head of a vacuum cleaner according to the present embodiment includes a method for driving the cleaner head after the cleaner head is identified, and includes:
based on the circuit structure disclosed in fig. 4, the method for driving the suction head proposed in this embodiment is specifically shown in fig. 5:
51. after the model of the sample tip is determined, the electrical connection between the battery in the cleaner and the sample tip circuitry is made.
52. A second divided voltage value is obtained at the voltage dividing circuit.
53. And under the action of the second voltage division value, the electric connection between the sample sucker motor and the battery is conducted through an isolation circuit in the sample sucker circuit.
54. And the battery outputs a control level corresponding to the model of the sample sucker to drive the sample sucker to work.
In operation, after all the operations of the previous embodiment are performed, the identification of the sample nozzle currently connected to the vacuum cleaner body is completed, and then step 31 is performed to connect the battery to the sample nozzle circuit by means of the nozzle motor control circuit, and simultaneously disconnect the 5V power supply terminal from the sample nozzle circuit, so as to connect the battery to the voltage dividing circuit. In the circuit formed by the battery and the voltage division circuit, the voltage value divided by a resistor R1 in the voltage division circuit is a second voltage value, if the second voltage value is higher than the minimum opening voltage of the MOS tube Q1 at the moment, the MOS tube Q1 is conducted to form a new circuit formed by the battery and the sucker motor, the voltage division circuit is short-circuited at the moment, the battery voltage is applied to the sucker motor to drive the rotation of the sucker motor, and the driving flow of the sample sucker is completed.
The type identification of the sample tip is described below with reference to examples.
The body side: VDD is 5 ± 0.1V, R3 is 10k Ω, and battery voltage is 20V
1# suction head: cotton quilt removes mite suction head:
the MOS transistor included in the isolation circuit is TPC8113(Vth is 0.8V-2V), R1 is 6.8k omega, and R2 is 39k omega.
2# suction head: floor dust absorption suction head:
the MOS transistor included in the isolation circuit is TPC8113(Vth is 0.8V-2V), R1 is 3.3k omega, and R2 is 10k omega.
3# suction head: wet wiping suction head of floor:
the MOS transistor included in the isolation circuit is TPC8113(Vth is 0.8V-2V), R1 is 680 Ω, and R2 is 2.4k Ω. The control chip sets the voltage of the suction head state identification port:
cotton quilt removes mite suction head: the suction head identification voltage value is 4.10V-4.29V,
floor dust absorption suction head: the suction head identification voltage value is 2.99V-3.36V,
wet wiping suction head of floor: the suction head identification voltage value is 1.27V-1.72V.
For the No. 1 suction head, after the No. 1 suction head is confirmed, the suction head body is started to function 1 style, the suction head motor control loop is started, the suction head applied voltage is 20V, Vgs of a first MOS (metal oxide semiconductor) tube is 2.96V and is greater than the maximum starting voltage Vth _ max (2V) of the first MOS tube, the first MOS tube is conducted, the suction head motor is electrified and rotated, and the cotton quilt mite removing operation mode is entered.
For the No. 2 sucker, after the No. 2 sucker is confirmed, the cleaner body is started to function 2 style, the sucker motor control loop is started, the sucker applied voltage is 20V, Vgs of a first MOS (metal oxide semiconductor) tube is 4.96V and is greater than the maximum starting voltage Vth _ max (2V) of the first MOS tube, the first MOS tube is conducted, the sucker motor is electrified and rotated, and the floor dust collection operation mode is entered.
For the No. 3 sucker, after the No. 3 sucker is confirmed, the cleaner body is started to function in the 3 types, the sucker motor control loop is started, the sucker applied voltage is 20V, Vgs of a first MOS (metal oxide semiconductor) tube is 4.4V and is greater than the maximum starting voltage Vth _ max (2V) of the first MOS tube, the first MOS tube is conducted, the sucker motor is electrified and rotated, and the floor wet wiping operation mode is entered.
It should be noted that, in consideration of the difference of the optimal driving voltages of different tips, after step 35 is executed, the control chip obtains the driving voltage of a known type of sample tip, and controls the output voltage of the battery in a PWM manner, so that the sample tip is in the working environment with the optimal driving voltage, thereby achieving the optimal cleaning effect.
In addition, in order to reduce the influence of noise waves in the battery power supply process, a filtering element is arranged between the voltage division circuit and the isolation circuit. The filter element in this embodiment is a capacitor C1.
The embodiment provides a suction head identification method for a dust collector, and particularly comprises a suction head driving method after the suction head identification is finished. With the help of the updated circuit structure provided in the embodiment, the connection states of the low-voltage power supply end and the battery are switched through the suction head motor control circuit, so that under the condition of battery connection, the isolation circuit is disabled based on the voltage division of the voltage division circuit, the connection between the suction head motor and the battery is conducted, the battery directly supplies power to the suction head motor, the driving process after suction head identification is completed, and the whole technical scheme of suction head identification is perfected. Furthermore, when the suction head motor is driven, the control chip is added to perform PWM regulation on the output level of the battery, so that the suction head motor works under the driving of the most appropriate voltage, and the dust collection effect of the dust collector is effectively achieved.
Example four
The present embodiment also proposes a vacuum cleaner 6, as shown in fig. 6, which has:
an operation part 61 for controlling the connection and disconnection of the circuit in the dust collector;
the acquiring unit 62 acquires the voltage sample value and determines the model of the sample tip corresponding to the voltage sample value in accordance with the stored identification voltage value.
In implementation, the operation part 61 is specifically used for conducting the electrical connection between the low-voltage power supply end in the dust collector body and the sample suction head circuit when the sample suction head is communicated with the dust collector body;
the obtaining part 62 is specifically used for obtaining a voltage sampling value at a voltage sampling position of the dust collector body by a voltage dividing circuit in the sample suction head circuit; and determining the model of the sample suction head corresponding to the voltage sampling value by combining the stored identification voltage value.
The embodiment provides a dust collector for executing a suction head identification method, which is particularly used for conducting the electric connection between a low-voltage power supply end in a dust collector body and a sample suction head circuit when the sample suction head is communicated with the dust collector body; acquiring a voltage sampling value at a voltage sampling position of the dust collector body based on a voltage division circuit in a sample suction head circuit; and determining the model of the sample suction head corresponding to the voltage sampling value by combining the stored identification voltage value. Through the judging steps, the type of the suction head used at present can be accurately identified by the dust collector, so that the suction head can be driven by the voltage suitable for the current suction head in the subsequent use process, and the suction effect of the suction head is fully exerted.
The sequence numbers in the above embodiments are merely for description, and do not represent the sequence of the assembly or the use of the components.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A nozzle identification method for a vacuum cleaner in which an identification voltage value corresponding to each nozzle type is stored, characterized in that the nozzle identification method is as follows:
when the sample suction head is communicated with the dust collector body, the low-voltage power supply end in the dust collector body is conducted to be electrically connected with the sample suction head circuit;
acquiring a voltage sampling value at a voltage sampling position of the dust collector body based on a voltage division circuit in a sample suction head circuit;
determining the model of the sample suction head corresponding to the voltage sampling value by combining the stored identification voltage value;
after the model of the sample suction head is determined, the electric connection between a battery and a sample suction head circuit in the dust collector is conducted, the battery outputs a control mode corresponding to the model of the sample suction head to drive the sample suction head to work, and a low-voltage power supply end in a dust collector body is disconnected with the electric connection between the sample suction head circuit and the low-voltage power supply end;
after the electric connection between a battery in the dust collector and a sample sucker circuit is conducted, a second voltage division value is obtained at the voltage division circuit;
under the action of the second voltage division value, an isolation circuit in the sample sucker circuit fails, and the sample sucker motor is conducted to be electrically connected with the battery.
2. The nozzle identifying method for a vacuum cleaner according to claim 1, wherein:
before the low-voltage power supply end in the dust collector body is electrically connected with the sample sucker circuit, the electric connection between the battery in the dust collector and the sample sucker circuit is cut off.
3. The nozzle identifying method for a vacuum cleaner according to claim 1, wherein:
after the low-voltage power supply end in the dust collector body is electrically connected with the sample suction head circuit, a first voltage value is obtained at a voltage sampling position;
under the action of the first voltage value, the sample sucker motor is disconnected from the low-voltage power supply end through an isolation circuit in the sample sucker circuit.
4. The nozzle identifying method for a vacuum cleaner according to claim 1, wherein:
and a flow control element for preventing backflow is arranged at the joint of the control chip and the battery.
5. The nozzle identifying method for a vacuum cleaner according to claim 4, wherein:
and a voltage division element is arranged at the voltage sampling position.
6. A nozzle identifying method for a vacuum cleaner according to claim 3, wherein:
the first voltage value is a voltage sampling value obtained at a voltage sampling position after the voltage of the low-voltage power supply end output by the control chip is divided by the voltage dividing circuit and the voltage dividing element.
7. A nozzle identifying method for a vacuum cleaner according to claim 3, wherein:
and a filter element is arranged between the voltage division circuit and the isolation circuit.
8. A vacuum cleaner, characterized in that the vacuum cleaner has:
the operation part controls the connection and disconnection of the circuit in the dust collector;
an acquisition unit for acquiring voltage sampling values and determining the model of the sample suction head corresponding to the voltage sampling values by combining the stored identification voltage values
After the model of the sample suction head is determined, the electric connection between a battery and a sample suction head circuit in the dust collector is conducted, the battery outputs a control mode corresponding to the model of the sample suction head to drive the sample suction head to work, and a low-voltage power supply end in a dust collector body is disconnected with the electric connection between the sample suction head circuit and the low-voltage power supply end;
after the electric connection between a battery in the dust collector and a sample sucker circuit is conducted, a second voltage division value is obtained at the voltage division circuit;
under the action of the second voltage division value, an isolation circuit in the sample sucker circuit fails, and the sample sucker motor is conducted to be electrically connected with the battery.
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| CN114073442A (en) * | 2020-08-21 | 2022-02-22 | 北京石头世纪科技股份有限公司 | Dust collector and working mode selection method thereof |
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| CN201658324U (en) * | 2010-04-19 | 2010-12-01 | 莱克电气股份有限公司 | Accessory for dust collector |
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