CN212281205U - Self-adjusting handheld dust collector - Google Patents
Self-adjusting handheld dust collector Download PDFInfo
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- CN212281205U CN212281205U CN202020428921.9U CN202020428921U CN212281205U CN 212281205 U CN212281205 U CN 212281205U CN 202020428921 U CN202020428921 U CN 202020428921U CN 212281205 U CN212281205 U CN 212281205U
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Abstract
The embodiment of the application provides a self-adjusting handheld dust collector, and relates to the technical field of dust collectors. The self-adjusting handheld dust collector is provided with an air suction opening and comprises a motor, a motor driving circuit board, a main control chip and a state detection unit; the main control chip is electrically connected with the state detection unit and the motor driving circuit board respectively; the motor driving circuit board is electrically connected with the motor; the state detection unit is used for detecting corresponding state signals of the self-adjusting handheld dust collector; and the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between a first rotating speed and a second rotating speed according to the state signal, and the first rotating speed is less than the second rotating speed. By adopting the motor, the electric energy can be saved, the noise can be reduced, and the service life of the motor can be prolonged.
Description
Technical Field
The application relates to the technical field of dust collectors, in particular to a self-adjusting handheld dust collector.
Background
The handheld dust collector has the advantages of small size, convenience in carrying, easiness in use and the like, and is widely applied to cleaning of household environments and vehicle-mounted environments at present.
In the related art, after the handheld dust collector is started, the motor of the handheld dust collector usually runs at a fixed high rotating speed, when the handheld dust collector finishes dust collection on a certain surface to be cleaned, a user moves the handheld dust collector to another surface to be cleaned, and the handheld dust collector runs at the fixed high rotating speed, so that electric energy is wasted. Moreover, the motor of the handheld dust collector always runs at a fixed high rotating speed, the noise is high, and the service life of the motor is shortened.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a self-adjusting handheld dust collector, which can save electric energy, reduce noise and prolong the service life of a motor. The specific technical scheme is as follows:
a self-adjusting handheld dust collector is provided with an air suction opening and comprises a motor, a motor driving circuit board, a main control chip and a state detection unit;
the main control chip is electrically connected with the state detection unit and the motor driving circuit board respectively;
the motor driving circuit board is electrically connected with the motor;
the state detection unit is used for detecting a corresponding state signal of the self-adjusting handheld dust collector;
the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between a first rotating speed and a second rotating speed according to the state signal, and the first rotating speed is smaller than the second rotating speed.
Optionally, the main control chip is configured to:
and controlling the motor driving circuit board to drive the motor to switch between the first rotating speed and the second rotating speed according to the state signal and the duration time of the state signal.
Optionally, the state detection unit at least includes one of the following: an obstacle detection sensor, a distance detection sensor, and a current detection circuit.
Optionally, the state detection unit is an obstacle detection sensor, and the obstacle detection sensor is an infrared sensor or a camera;
the obstacle detection sensor is used for detecting an obstacle signal at the position of the air suction opening;
and the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between the first rotating speed and the second rotating speed according to the existence of the barrier signal.
Optionally, the main control chip is configured to:
under the condition that the motor is at the first rotating speed, if an obstacle signal exists, controlling the motor driving circuit board to drive the motor to be switched to the second rotating speed; or if an obstacle signal exists and the state lasts for a first preset time, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed;
under the condition that the motor is at the second rotating speed, if no obstacle signal exists, controlling the motor driving circuit board to drive the motor to be switched to the first rotating speed; or if no obstacle signal exists and the state lasts for a second preset time, controlling the motor driving circuit board to drive the motor to switch to the first rotating speed.
Optionally, the state detecting unit is a distance detecting sensor, and the distance detecting sensor at least includes one of the following: the system comprises an infrared TOF distance sensor, an ultrasonic distance sensor, a camera and a triangular distance measuring sensor;
the distance detection sensor is used for detecting a distance signal between the air suction opening and a corresponding obstacle;
and the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between the first rotating speed and the second rotating speed according to the distance signal.
Optionally, the main control chip is configured to:
under the condition that the motor is at the first rotating speed, if the distance value represented by the distance signal is smaller than a first preset distance threshold value, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed; or if the distance value represented by the distance signal is smaller than a first preset distance threshold value and the state lasts for a first preset time, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed;
under the condition that the motor is at the second rotating speed, if the distance value represented by the distance signal is larger than a second preset distance threshold value, controlling the motor driving circuit board to drive the motor to be switched to the first rotating speed; or if the distance value represented by the distance signal is greater than a second preset distance threshold value and the state lasts for a second preset duration, controlling the motor driving circuit board to drive the motor to switch to the first rotating speed.
Optionally, the state detection unit is a current detection circuit;
the current detection circuit is used for detecting a current signal of the motor;
the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between the first rotating speed and the second rotating speed according to the current signal.
Optionally, the current detection circuit includes a first resistor and an operational amplifier circuit;
the first resistor is connected in series in a power supply loop of the motor;
the two ends of the first resistor are connected with the input end of the operational amplifier circuit, and the output end of the operational amplifier circuit is connected with the main control chip.
Optionally, the main control chip is configured to:
under the condition that the motor is at the first rotating speed, if the current value represented by the current signal is greater than a first preset current threshold value, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed; or if the current value represented by the current signal is greater than a first preset current threshold value and the state lasts for a first preset time, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed;
under the condition that the motor is at the second rotating speed, if the current value represented by the current signal is smaller than a second preset current threshold value, controlling the motor driving circuit board to drive the motor to switch to the first rotating speed; or if the current value represented by the current signal is smaller than a second preset current threshold value and the state lasts for a second preset duration, controlling the motor driving circuit board to drive the motor to switch to the first rotating speed.
The application provides a self-adjusting handheld dust collector which is provided with an air suction opening and comprises a motor, a motor driving circuit board, a main control chip and a state detection unit; the main control chip is electrically connected with the state detection unit and the motor driving circuit board respectively; the motor driving circuit board is electrically connected with the motor; the state detection unit is used for detecting corresponding state signals of the self-adjusting handheld dust collector; and the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between a first rotating speed and a second rotating speed according to the state signal, and the first rotating speed is less than the second rotating speed. Compared with the prior art, the self-adjusting handheld dust collector provided by the application can control the motor to switch between the first rotating speed and the second rotating speed according to the state signal, wherein the first rotating speed is smaller than the second rotating speed. The motor of the self-adjusting handheld dust collector cannot always run at a fixed high rotating speed, so that the electric energy can be saved, the noise can be reduced, and the service life of the motor can be prolonged.
In addition, the self-adjusting handheld dust collector provided by the application can control the motor to switch between the first rotating speed and the second rotating speed according to the state signal and the duration time of the state signal, and the rotating speed of the motor can be prevented from being frequently switched.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic view of a self-adjusting hand-held vacuum cleaner according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of another self-adjusting hand-held vacuum cleaner according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of another self-adjusting hand-held vacuum cleaner according to an embodiment of the present disclosure;
fig. 4 is a schematic view of a scene detected by a distance sensor according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of another self-adjusting hand-held vacuum cleaner constructed in accordance with an embodiment of the present disclosure;
fig. 6 is a current detection circuit according to an embodiment of the present disclosure.
Description of reference numerals:
11. a state detection unit; 12. a main control chip; 13. a motor driving circuit board; 14. a motor; 111. an obstacle detection sensor; 112. a distance detection sensor; 41. sundries; 42. an air suction opening; 44. a surface to be cleaned; 113. a current detection circuit.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, the present embodiment provides a self-adjusting handheld vacuum cleaner provided with an air suction opening, and the self-adjusting handheld vacuum cleaner includes a motor 14, a motor driving circuit board 13, a main control chip 12, and a status detection unit 11.
The main control chip 12 is electrically connected to the state detection unit 11 and the motor driving circuit board 13, respectively.
The motor driving circuit board 13 is electrically connected to the motor 14.
And the state detection unit 11 is used for detecting corresponding state signals of the self-adjusting handheld dust collector.
And the main control chip 12 is used for controlling the motor driving circuit board 13 to drive the motor 14 to switch between a first rotating speed and a second rotating speed according to the state signal, wherein the first rotating speed is less than the second rotating speed.
Wherein, the state detection unit 11 at least comprises one of the following: an obstacle detection sensor 111, a distance detection sensor 111, and a current detection circuit 113. The motor 14 may be a brushless motor or a brushed motor.
In the embodiment of the present application, the obstacle detection sensor 111 may detect an obstacle signal at the position of the air suction opening as a state signal; alternatively, the distance detection sensor 111 may detect a distance signal between the air suction opening and the corresponding obstacle as a status signal; alternatively, the current detection circuit 113 may detect a current signal of the motor 14 as the state signal.
The state signal is used for indicating whether the self-adjusting handheld dust collector is in a dust collection running state or a standby running state, the dust collection running state is a running state that the self-adjusting handheld dust collector is close to a surface to be cleaned to collect dust, and the standby running state is a running state that the self-adjusting handheld dust collector is far away from the surface to be cleaned and dust not sucked into the surface to be cleaned.
Under the condition that the motor 14 is at the first rotating speed, when the state signal is detected to indicate that the self-adjusting vacuum cleaner is in a vacuum operation state (i.e. an operation state that the self-adjusting handheld vacuum cleaner is close to a surface to be cleaned for vacuum cleaning), the main control chip 12 can control the motor driving circuit board 13 to drive the motor 14 to switch from the first rotating speed to the second rotating speed, that is, the rotating speed of the motor 14 is increased, so that the vacuum cleaning capacity is increased. Under the condition that the motor 14 is at the second rotating speed, when the state signal indicating that the self-adjusting vacuum cleaner is in the standby operation state (i.e. the operation state that the self-adjusting handheld vacuum cleaner is far away from the surface to be cleaned and does not suck dust on the surface to be cleaned), the main control chip 12 can control the motor driving circuit board 13 to drive the motor 14 to be switched from the second rotating speed to the first rotating speed, that is, the rotating speed of the motor 14 is lower, so that the electric energy is saved.
Wherein the first rotational speed and the second rotational speed may satisfy the following relationship: 0.4n1≤n0≤0.7n1，n0Is a first rotation speed, n1The second rotation speed.
In this way, the self-adjusting hand-held cleaner controls the motor 14 to switch between a first rotational speed and a second rotational speed in dependence on the status signal, wherein the first rotational speed is less than the second rotational speed. The motor 14 of the self-adjusting handheld dust collector cannot always run at a fixed high rotating speed, so that the electric energy can be saved, the noise can be reduced, and the service life of the motor 14 can be prolonged.
Optionally, the main control chip 12 is configured to control the motor driving circuit board 13 to drive the motor 14 to switch between the first rotation speed and the second rotation speed according to the status signal and the duration time thereof.
In this embodiment, when the motor 14 is at the first rotation speed, and when the state signal is detected to indicate that the self-adjusting vacuum cleaner is in the vacuum operation state and the state lasts for the first preset time duration, the main control chip 12 may control the motor driving circuit board 13 to drive the motor 14 to switch from the first rotation speed to the second rotation speed. Under the condition that the motor 14 is at the second rotation speed, when the state signal indicating that the self-adjusting cleaner is in the standby operation state and the state continues for a second preset time is detected, the main control chip 12 may control the motor driving circuit board 13 to drive the motor 14 to switch from the second rotation speed to the first rotation speed.
Thus, through the first preset duration setting, when the motor 14 is at the first rotation speed and the state signal is detected to indicate that the self-adjusting vacuum cleaner is in the vacuum operation state, the main control chip 12 does not immediately control the motor 14 to switch to the second rotation speed, the state signal indicates that the self-adjusting vacuum cleaner is in the vacuum operation state possibly caused by the fact that a user mistakenly moves the vacuum cleaner at a certain time, when the state signal is detected to indicate that the self-adjusting vacuum cleaner is in the vacuum operation state and the state lasts for the first preset duration, the main control chip 12 controls the motor 14 to switch to the second rotation speed, and frequent switching of the self-adjusting handheld vacuum cleaner between the first rotation speed and the second rotation speed can be avoided. Similarly, the self-adjusting handheld dust collector can be prevented from being frequently switched between the first rotating speed and the second rotating speed through the setting of the second preset time length.
The first preset time length and the second preset time length may be the same or different. For example, the first preset duration and the second preset duration satisfy the following relationship: t is not more than 1s0＝t1≤3s，t0Is the first stepSet time period, t1Is a second preset duration.
Alternatively, as shown in fig. 2, the state detection unit 11 includes an obstacle detection sensor 111, and the obstacle detection sensor 111 is an infrared sensor or a camera.
And an obstacle detection sensor 111 for detecting an obstacle signal at the position of the air suction opening.
And the main control chip 12 is used for controlling the motor driving circuit board 13 to drive the motor 14 to switch between the first rotating speed and the second rotating speed according to the existence of the barrier signals.
In the embodiment of the present application, the obstacle detection sensor 111 detects whether an obstacle exists in a preset range in front of the air suction opening, and generates an obstacle signal when the obstacle exists. When the obstacle detection sensor 111 is an infrared sensor, the infrared sensor emits infrared rays to the front of the air suction opening, and when the infrared sensor receives the reflected infrared rays, the existence of an obstacle is indicated, and the infrared sensor generates an obstacle signal. When the obstacle detection sensor 111 is a camera, the camera can capture an image in front of the air suction opening, and when an obstacle exists in the captured image, an obstacle signal is generated.
The obstacle signal indicates that the self-adjusting handheld dust collector is in a dust collection operating state of attaching to the surface to be cleaned for dust collection, and the obstacle-free signal indicates that the self-adjusting handheld dust collector is in a standby operating state of being far away from the surface to be cleaned and not sucking dust on the surface to be cleaned. The main control chip 12 may control the motor 14 to switch between the first rotation speed and the second rotation speed according to the presence or absence of the obstacle signal, so that the motor 14 operates at the second rotation speed when the obstacle signal is present, that is, at the high rotation speed, to increase the dust collecting capacity, and the motor 14 operates at the first rotation speed when the obstacle signal is absent, that is, at the low rotation speed, to save the electric energy.
Optionally, the main control chip 12 is configured to: under the condition that the motor 14 is at the first rotating speed, if an obstacle signal exists, controlling the motor driving circuit board 13 to drive the motor 14 to be switched to the second rotating speed; or, if there is an obstacle signal and the state lasts for a first preset time, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the second rotating speed. Under the condition that the motor 14 is at the second rotating speed, if no obstacle signal exists, the motor driving circuit board 13 is controlled to drive the motor 14 to be switched to the first rotating speed; or, if there is no obstacle signal and the state lasts for a second preset time, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the first rotation speed.
Optionally, as shown in fig. 3, the state detecting unit 11 includes a distance detecting sensor 111, and the distance detecting sensor 111 includes at least one of: infrared TOF distance sensor, ultrasonic distance sensor, camera and triangle range finding sensor.
And a distance detection sensor 111 for detecting a distance signal between the air suction opening and the corresponding obstacle.
And the main control chip 12 is used for controlling the motor driving circuit board 13 to drive the motor 14 to switch between a first rotating speed and a second rotating speed according to the distance signal.
In the embodiment of the application, the distance signal is used for representing the distance value between the air suction opening and the obstacle in front of the air suction opening, and the obstacle can be sundries to be sucked away or a surface to be cleaned. For example, as shown in fig. 4, the distance sensor may detect the distance between the foreign object 41 of the surface to be cleaned 44 and the suction opening 42. When the foreign matter 41 is small and the distance sensor is difficult to detect, the distance sensor may detect the distance between the surface to be cleaned 44 and the air suction opening 42.
In the embodiment of the application, the fact that the distance value represented by the distance signal is smaller than the first preset distance threshold value indicates that the self-adjusting handheld dust collector is in a dust collection operating state where the self-adjusting handheld dust collector is close to the surface to be cleaned to collect dust, and the fact that the distance value represented by the distance signal is larger than the second preset distance threshold value indicates that the self-adjusting handheld dust collector is in a standby operating state where the self-adjusting handheld dust collector is far away from the surface to be cleaned and dust not sucked into the. The main control chip 12 can control the motor 14 to switch between the first rotating speed and the second rotating speed according to the distance signal, so that the motor 14 runs at the second rotating speed when the distance value represented by the distance signal is smaller than the first preset distance threshold value, namely, runs at a high rotating speed, the dust collection effect is increased, and the motor 14 runs at the first rotating speed when the distance value represented by the distance signal is larger than the second preset distance threshold value, namely, runs at a low rotating speed, and the electric energy is saved.
Optionally, the main control chip 12 is configured to: under the condition that the motor 14 is at the first rotating speed, if the distance value represented by the distance signal is smaller than a first preset distance threshold value, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the second rotating speed; or, if the distance value represented by the distance signal is smaller than the first preset distance threshold and the state lasts for the first preset duration, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the second rotating speed. Under the condition that the motor 14 is at the second rotating speed, if the distance value represented by the distance signal is greater than a second preset distance threshold value, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the first rotating speed; or, if the distance value represented by the distance signal is greater than the second preset distance threshold and the state lasts for the second preset duration, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the first rotating speed.
The first preset distance threshold may be the same as the second preset distance threshold, or the first preset distance threshold is smaller than the second preset distance threshold. For example, the first preset distance threshold is greater than or equal to 1 cm and less than or equal to 3 cm, and the second preset distance threshold is greater than or equal to 3.5 cm and less than or equal to 5 cm. The first predetermined distance threshold being less than the second predetermined distance threshold may prevent the motor 14 from frequently switching rotational speeds.
Alternatively, as shown in fig. 5, the state detection unit 11 includes a current detection circuit 113.
And a current detection circuit 113 for detecting a current signal of the motor 14.
And the main control chip 12 is used for controlling the motor driving circuit board 13 to drive the motor 14 to switch between a first rotating speed and a second rotating speed according to the current signal.
In the embodiment of the application, when the motor 14 is at the first rotation speed and the current value represented by the current signal is greater than the first preset current threshold, it indicates that the load of the motor 14 is large, and the self-adjusting handheld dust collector is in a dust collection operation state of attaching to a surface to be cleaned for dust collection. When the motor 14 is at the second rotating speed, the current value represented by the current signal is smaller than the second preset current threshold value, which indicates that the load of the motor 14 is low, and the self-adjusting handheld dust collector is in a standby operation state of keeping away from the surface to be cleaned and not sucking dust on the surface to be cleaned. The main control chip 12 can control the motor 14 to switch between a first rotating speed and a second rotating speed according to the current signal, so that when the self-adjusting handheld dust collector is in a dust collection operating state, the self-adjusting handheld dust collector operates at the second rotating speed, namely at a large rotating speed, thereby increasing the dust collection effect, and when the self-adjusting handheld dust collector is in a standby operating state, the motor 14 operates at the first rotating speed, namely at a small rotating speed, thereby saving electric energy.
Optionally, the current detection circuit 113 includes a first resistor and an operational amplifier circuit; the first resistor is connected in series in a power supply loop of the motor 14; the two ends of the first resistor are connected with the input end of the operational amplifier circuit, and the output end of the operational amplifier circuit is connected with the main control chip 12.
As shown in fig. 6, the motor driving circuit board 13 includes a three-phase bridge circuit including controllable switching devices Q1, Q2, Q3, Q4, Q5, and Q6, a power supply supplies power to the motor 14 through the three-phase bridge circuit, one end of a first resistor R1 is connected to a source of the controllable switching device Q2, and the other end of the first resistor R1 is connected to a negative electrode of the power supply. Two ends of the first resistor R1 are connected with the input end of the operational amplifier circuit AMP0, the output end OUT of the operational amplifier circuit AMP0 is connected with the main control chip 12, and the output end OUT of the operational amplifier circuit AMP0 outputs a current signal of the motor 14 to the main control chip 12.
This application only sets up the current signal that a current detection circuit can detect the motor, need not to set up the current of each looks of three detection circuitry detection motor as prior art, has saved the cost. Moreover, the three detection circuits are arranged in the prior art to detect the current of each phase of the motor, and the parameters of devices in the three detection circuits need to be correspondingly adjusted, so that the current signals detected by each detection circuit are kept uniform, the setting is complex, the detection precision is low, only one current detection circuit is needed, and the detection precision is high.
Optionally, the main control chip 12 is configured to: under the condition that the motor 14 is at the first rotating speed, if the current value represented by the current signal is greater than a first preset current threshold value, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the second rotating speed; or, if the current value represented by the current signal is greater than the first preset current threshold and the state lasts for the first preset duration, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the second rotating speed. Under the condition that the motor 14 is at the second rotating speed, if the current value represented by the current signal is smaller than a second preset current threshold value, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the first rotating speed; or, if the current value represented by the current signal is smaller than a second preset current threshold and the state lasts for a second preset duration, controlling the motor driving circuit board 13 to drive the motor 14 to switch to the first rotating speed.
Wherein the first preset current threshold and the second preset current threshold may satisfy the following relationship:
1.2 IL≤i0≤1.5IL，0.7IH≤i1≤0.9IH，i0is a first predetermined current threshold value, i1Is a second predetermined current threshold, ILThe rotation speed of the motor 14 is a first rotation speed n0And no-load current, IHThe rotation speed of the motor 14 is a second rotation speed n1And full load current.
Wherein, ILIs calculated by the formula IL＝2πTL/(N*Φ)，TLIs the minimum load torque; i isHIs calculated by the formula IH＝2πTH/(N*Φ)，THAnd N is the number of turns of the coil, and phi is the magnetic flux of the motor.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. The self-adjusting handheld dust collector is characterized in that an air suction opening is formed in the self-adjusting handheld dust collector, and the self-adjusting handheld dust collector comprises a motor, a motor driving circuit board, a main control chip and a state detection unit;
the main control chip is electrically connected with the state detection unit and the motor driving circuit board respectively;
the motor driving circuit board is electrically connected with the motor;
the state detection unit is used for detecting a corresponding state signal of the self-adjusting handheld dust collector;
the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between a first rotating speed and a second rotating speed according to the state signal, and the first rotating speed is smaller than the second rotating speed.
2. The self-adjusting handheld vacuum cleaner of claim 1, wherein the master control chip is configured to:
and controlling the motor driving circuit board to drive the motor to switch between the first rotating speed and the second rotating speed according to the state signal and the duration time of the state signal.
3. The self-adjusting hand-held cleaner of claim 1, wherein the condition detection unit comprises at least one of: an obstacle detection sensor, a distance detection sensor, and a current detection circuit.
4. The self-adjusting hand-held cleaner of claim 3, wherein the status detection unit is an obstacle detection sensor, the obstacle detection sensor being an infrared sensor or a camera;
the obstacle detection sensor is used for detecting an obstacle signal at the position of the air suction opening;
and the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between the first rotating speed and the second rotating speed according to the existence of the barrier signal.
5. The self-adjusting handheld vacuum cleaner of claim 4, wherein the master control chip is configured to:
under the condition that the motor is at the first rotating speed, if an obstacle signal exists, controlling the motor driving circuit board to drive the motor to be switched to the second rotating speed; or if an obstacle signal exists and the state lasts for a first preset time, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed;
under the condition that the motor is at the second rotating speed, if no obstacle signal exists, controlling the motor driving circuit board to drive the motor to be switched to the first rotating speed; or if no obstacle signal exists and the state lasts for a second preset time, controlling the motor driving circuit board to drive the motor to switch to the first rotating speed.
6. The self-adjusting hand-held cleaner according to claim 3, wherein the condition detection unit is a distance detection sensor comprising at least one of: the system comprises an infrared TOF distance sensor, an ultrasonic distance sensor, a camera and a triangular distance measuring sensor;
the distance detection sensor is used for detecting a distance signal between the air suction opening and a corresponding obstacle;
and the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between the first rotating speed and the second rotating speed according to the distance signal.
7. The self-adjusting handheld vacuum cleaner of claim 6, wherein the master control chip is configured to:
under the condition that the motor is at the first rotating speed, if the distance value represented by the distance signal is smaller than a first preset distance threshold value, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed; or if the distance value represented by the distance signal is smaller than a first preset distance threshold value and the state lasts for a first preset time, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed;
under the condition that the motor is at the second rotating speed, if the distance value represented by the distance signal is larger than a second preset distance threshold value, controlling the motor driving circuit board to drive the motor to be switched to the first rotating speed; or if the distance value represented by the distance signal is greater than a second preset distance threshold value and the state lasts for a second preset duration, controlling the motor driving circuit board to drive the motor to switch to the first rotating speed.
8. The self-adjusting hand-held cleaner of claim 3, wherein the status detection unit is a current detection circuit;
the current detection circuit is used for detecting a current signal of the motor;
the main control chip is used for controlling the motor driving circuit board to drive the motor to switch between the first rotating speed and the second rotating speed according to the current signal.
9. The self-adjusting hand-held cleaner of claim 8, wherein the current sensing circuit comprises a first resistor and an op-amp circuit;
the first resistor is connected in series in a power supply loop of the motor;
the two ends of the first resistor are connected with the input end of the operational amplifier circuit, and the output end of the operational amplifier circuit is connected with the main control chip.
10. The self-adjusting handheld vacuum cleaner of claim 8, wherein the master control chip is configured to:
under the condition that the motor is at the first rotating speed, if the current value represented by the current signal is greater than a first preset current threshold value, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed; or if the current value represented by the current signal is greater than a first preset current threshold value and the state lasts for a first preset time, controlling the motor driving circuit board to drive the motor to switch to the second rotating speed;
under the condition that the motor is at the second rotating speed, if the current value represented by the current signal is smaller than a second preset current threshold value, controlling the motor driving circuit board to drive the motor to switch to the first rotating speed; or if the current value represented by the current signal is smaller than a second preset current threshold value and the state lasts for a second preset duration, controlling the motor driving circuit board to drive the motor to switch to the first rotating speed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020428921.9U CN212281205U (en) | 2020-03-30 | 2020-03-30 | Self-adjusting handheld dust collector |
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| CN202020428921.9U CN212281205U (en) | 2020-03-30 | 2020-03-30 | Self-adjusting handheld dust collector |
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| CN212281205U true CN212281205U (en) | 2021-01-05 |
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| CN202020428921.9U Active CN212281205U (en) | 2020-03-30 | 2020-03-30 | Self-adjusting handheld dust collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477616A (en) * | 2021-07-09 | 2021-10-08 | 安徽理工大学 | Bookshelf book self-cleaning device based on state detection and system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477616A (en) * | 2021-07-09 | 2021-10-08 | 安徽理工大学 | Bookshelf book self-cleaning device based on state detection and system thereof |
| CN113477616B (en) * | 2021-07-09 | 2022-04-12 | 安徽理工大学 | Bookshelf book self-cleaning device based on state detection and system thereof |
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