CN209003820U - The scrubbing brush driving device of dust catcher - Google Patents
The scrubbing brush driving device of dust catcher Download PDFInfo
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- CN209003820U CN209003820U CN201821235727.8U CN201821235727U CN209003820U CN 209003820 U CN209003820 U CN 209003820U CN 201821235727 U CN201821235727 U CN 201821235727U CN 209003820 U CN209003820 U CN 209003820U
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Abstract
The utility model proposes a kind of scrubbing brush driving device of dust catcher, the scrubbing brush driving device of the dust catcher includes: the first and second output ends being connected respectively with scrubbing brush；PWM input terminal receives pwm signal；The drive module being connected between PWM input terminal and the first and second output ends generates driving signal according to pwm signal, and exports to the first and second output ends；The detection module being connected with first switch tube detects the insert state of scrubbing brush；Drive module includes: the first switch tube being connected with the first and second output ends；The first order driver being connected with PWM input terminal；The second level driver being connected with the output end of first order driver；The third level driver being connected with the output end of second level driver, the output end of third level driver are connected with the control terminal of first switch tube.The scrubbing brush driving device of the dust catcher of the utility model has the characteristics that low-power consumption, low cost, easily assembled, harness is few and safe.
Description
Technical field
The utility model relates to field of intelligent control technology more particularly to a kind of scrubbing brush driving devices of dust catcher.
Background technique
Floor brush of dust collector control technology, which mainly has, does not detect interface feedback technique two on scrubbing brush plugging technique and ground brush module
Kind.
The implementation for not detecting scrubbing brush plugging technique is that scrubbing brush control circuit is opened after booting, output control brush electricity
The pulse width of pressure modulates (Pulse Width Modulation, abbreviation PWM) signal.No matter scrubbing brush is pulled out and is inserted into, this
PWM exists always, therefore, does not detect scrubbing brush plugging technique scrubbing brush plug terminal band high voltage always, dangerous, and circuit
Plate oneself power consumption is big.
The implementation of interface feedback technique is on ground brush module, in addition to two control mouths of scrubbing brush, is in addition further added by one
Interface, ground brush module, which feeds back to dust catcher master control system scrubbing brush by this interface, whether there is, and therefore, connect on ground brush module
Mouth feedback technique need to increase feedback interface, increase harness, assembling is complicated, at high cost.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.
For this purpose, the purpose of this utility model is that proposing a kind of scrubbing brush driving device of dust catcher, it is ensured that scrubbing brush control
Technology has the characteristics that low-power consumption, low cost, easily assembled, harness is few and safe.
In order to achieve the above objectives, the utility model first aspect embodiment proposes a kind of scrubbing brush driving dress of dust catcher
It sets characterized by comprising
First output end and second output terminal, first output end and second output terminal are connected with scrubbing brush；
PWM input terminal, for receiving pwm signal；
The drive module being connected between the PWM input terminal and first output end and second output terminal, is used for
Driving signal is generated according to the pwm signal, and driving signal is exported to first output end and second output terminal；
Detection module, the detection module are connected with the first switch tube, for detecting the insert state of the scrubbing brush；
The drive module includes: the first switch tube being connected with the second output terminal；It is connected with the PWM input terminal
First order driver；The second level driver being connected with the output end of the first order driver；It is driven with the second level
The connected third level driver of the output end of device, the output end of the third level driver and the control terminal of the first switch tube
It is connected.
According to the scrubbing brush driving device for the dust catcher that the utility model embodiment proposes, PWM input terminal receives pwm signal,
Drive module between first output end and second output terminal generates driving signal according to pwm signal, and driving signal is exported
To first output end and second output terminal, the detection module being connected with first switch tube completes the scrubbing brush insert state
Detection that is, so that pwm signal is high level, makes so as to close pwm signal when detecting that scrubbing brush is not inserted into and (extracts)
The scrubbing brush pluggable terminals of the scrubbing brush driving device of dust catcher do not continue band high voltage, therefore safety, circuit board are low in energy consumption, in addition without
Feedback interface need to be increased, therefore design is simple, easily assembled, at low cost, harness is few.
One embodiment according to the present utility model, the first order driver includes: first resistor, the first resistor
First end be connected with the power supply；Second resistance, the first end of the second resistance are connected with the PWM input terminal；First
The control terminal of driving tube, first driving tube is connected with the second end of the second resistance, and the first of first driving tube
End is connected with the second end of the first resistor；3rd resistor, the first end of the 3rd resistor and first driving tube
Second end is connected, the second end ground connection of the 3rd resistor, wherein the first end of the 3rd resistor is first order driving
The output end of device.
One embodiment according to the present utility model, the second level driver include: the 4th resistance, the 4th resistance
First end be connected with the power supply；5th resistance, the first end and the second end phase of the 4th resistance of the 5th resistance
Even；Second driving tube, the control terminal of second driving tube are connected with the output end of the first order driver, and described second drives
The first end of dynamic pipe is connected with the second end of the 5th resistance, the second end ground connection of second driving tube；Third driving tube,
The control terminal of the third driving tube is connected with the second end of the 4th resistance, the first end of the third driving tube with it is described
Power supply is connected；The first end of 6th resistance, the 6th resistance is connected with the second end of the third driving tube；7th resistance,
The first end of 7th resistance is connected with the second end of the 6th resistance, the second end ground connection of the 7th resistance, wherein
The second end of 6th resistance is the output end of the second level driver.
One embodiment according to the present utility model, the third level driver includes: first diode, and the described 1st
The anode of pole pipe is connected with the output end of the second level driver；4th driving tube, the control terminal of the 4th driving tube with
The output end of the second level driver is connected, the cathode phase of the first end and the first diode of the 4th driving tube
Even, the second end ground connection of the 4th driving tube；8th resistance, first end and the first diode of the 8th resistance
Cathode is connected, the second end ground connection of the 8th resistance, wherein the cathode of the first diode is the third level driver
Output end be connected with the control terminal of the first switch tube.
One embodiment according to the present utility model, the scrubbing brush driving device further include: be connected to first output
The second diode between end and second output terminal.
One embodiment according to the present utility model, the detection module include: sampling resistor, and the sampling resistor is used for
It detects the electric current of the first switch tube and generates sample rate current；Operational amplifier, the operational amplifier and sampling electricity
Resistance is connected, for amplifying to the sample rate current, wherein generates scrubbing brush insert state detection knot according to the sample rate current
Fruit.
One embodiment according to the present utility model, the detection module further include: filter, the filter with it is described
Operational amplifier is connected, for being filtered to amplified sample rate current.
The additional aspect of the utility model and advantage will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the structural schematic diagram according to the scrubbing brush driving device of the dust catcher of the utility model one embodiment；
Fig. 2 is the circuit diagram according to the scrubbing brush driving device of the dust catcher of the utility model another embodiment；
Fig. 3 is the flow chart of the scrubbing brush control method of the scrubbing brush driving device based on dust catcher shown in Fig. 2.
Specific embodiment
The embodiments of the present invention are described below in detail, the example of embodiment is shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the utility model, and should not be understood as the limit to the utility model
System.
With reference to the accompanying drawing come describe the utility model embodiment dust catcher scrubbing brush driving device.
Fig. 1 is the structural schematic diagram according to the scrubbing brush driving device of the dust catcher of the utility model one embodiment.Such as Fig. 1
Shown, the scrubbing brush driving device of the dust catcher of the utility model embodiment includes:
First output end 11 and second output terminal 12, the first output end 11 and second output terminal 12 are connected with scrubbing brush.
PWM input terminal 13, for receiving pwm signal.
The drive module 14 being connected between PWM input terminal 13 and the first output end 11 and second output terminal 12, is used for
Driving signal is generated according to pwm signal, and driving signal is exported to the first output end 11 and second output terminal 12.
Detection module 15, detection module 15 are connected with first switch tube Q10, for detecting the insert state of scrubbing brush.
The scrubbing brush driving device of the dust catcher of the utility model embodiment, PWM input terminal receive pwm signal, the first output
It holds and driving signal is generated according to pwm signal the drive module between second output terminal, and driving signal is exported to first defeated
Outlet and second output terminal, the detection module being connected with first switch tube completes the detection of scrubbing brush insert state, so as to examine
When measuring scrubbing brush and being not inserted into (extract), pwm signal is closed, i.e., so that pwm signal is high level, drives the scrubbing brush of dust catcher
The scrubbing brush pluggable terminals of device do not continue band high voltage, therefore safety, circuit board are low in energy consumption, in addition without increasing feedback interface,
Therefore design that simple, easily assembled, at low cost, harness is few.
Fig. 2 is the circuit diagram according to the scrubbing brush driving device of the dust catcher of the utility model another embodiment.Such as Fig. 2 institute
Show, on the basis of embodiment shown in Fig. 1, drive module 14 includes: the first switch tube Q10 being connected with second output terminal 12；
The first order driver being connected with PWM input terminal 13；The second level driver being connected with the output end of first order driver；With
The connected third level driver of the output end of two-stage actuator, the control of the output end and first switch tube Q10 of third level driver
End processed is connected.
Wherein, first order driver includes: first resistor R21, and the first end of first resistor R21 is connected with power supply VCC；The
The first end of two resistance R23, second resistance R23 are connected with PWM input terminal 13；First driving tube Q11, the first driving tube Q11's
Control terminal is connected with the second end of second resistance R23, the first end and the second end phase of first resistor R21 of the first driving tube Q11
Even；3rd resistor R33, the first end of 3rd resistor R33 are connected with the second end of the first driving tube Q11, and the of 3rd resistor R33
Two ends ground connection, wherein the first end of 3rd resistor R33 is the output end of first order driver.
Wherein, second level driver includes: the 4th resistance R18, and the first end of the 4th resistance R18 is connected with power vd D；The
Five resistance R20, the first end of the 5th resistance R20 are connected with the second end of the 4th resistance R18；Second driving tube Q12, the second driving
The control terminal of pipe Q12 is connected with the output end of first order driver, and the first end of the second driving tube Q12 is with the 5th resistance R20's
Second end is connected, the second end ground connection of the second driving tube Q12；Third driving tube Q9, the control terminal and the 4th of third driving tube Q9
The second end of resistance R18 is connected, and the first end of third driving tube Q9 is connected with power vd D, the 6th resistance Q22, the 6th resistance Q22
First end be connected with the second end of third driving tube Q9；The first end and the 6th resistance of 7th resistance R26, the 7th resistance R26
The second end of R22 is connected, the second end ground connection of the 7th resistance, wherein the second end of the 6th resistance R22 is second level driver
Output end.
Wherein, third level driver includes: first diode D8, anode and the second level driver of first diode D8
Output end is connected；The control terminal of 4th driving tube Q13, the 4th driving tube Q13 are connected with the output end of second level driver, and the 4th
The first end of driving tube Q13 is connected with the cathode of first diode D8, the second end ground connection of the 4th driving tube Q13；8th resistance
The first end of Q25, the 8th resistance R25 are connected with the cathode of first diode D8, the second end ground connection of the 8th resistance R25, wherein
The cathode of first diode D8 is that the output end of third level driver is connected with the control terminal of first switch tube Q10.
Wherein, the scrubbing brush driving device of the utility model embodiment further include: it is defeated to be connected to the first output end 11 and second
The second diode D7 between outlet 12.
Wherein, detection module 15 includes: sampling resistor R27, and sampling resistor R27 is used to detect the electricity of first switch tube Q10
It flows and generates sample rate current；Operational amplifier U4A, operational amplifier U4A are connected with sampling resistor R27, for sample rate current
It amplifies, wherein scrubbing brush insert state testing result is generated according to sample rate current.
Wherein, detection module 15 further include: filter (the RC filter constituted including resistance R75 and capacitor C27), filtering
Device is connected with operational amplifier U4A, for being filtered to amplified sample rate current.
Wherein, BATT+ is cell voltage, and GND is ground connection, and J4 is earth brush motor module.
The working principle of the scrubbing brush driving device of embodiment illustrated in fig. 2 is as shown in table 1: when PWM input terminal 13 is high level
When, the first driving tube Q11 is not turned on, and the second driving tube Q12 is not turned on, and third driving tube Q9 is not turned on, and the 4th driving tube Q13 is not
Conducting, therefore, first switch tube Q10 is not turned on.When PWM input terminal 13 is low level, the first driving tube Q11 conducting, second
Driving tube Q12 conducting, third driving tube Q9 conducting, the 4th driving tube Q13 conducting, therefore, first switch tube Q10 conducting.
After scrubbing brush insertion, resistance very little between the first output end 11 and second output terminal 12 is equivalent to access.Work as scrubbing brush
It is open circuit between the first output end 11 and second output terminal 12 when being not inserted into and (extracting).
Therefore, when scrubbing brush be inserted into after, and PWM input terminal 13 be high level when, first switch tube Q10 is not turned on, sampling electricity
R27 cannot detect the electric current of first switch tube Q10 and generate sample rate current for resistance, and detection module 15 is without effective operating current.
When scrubbing brush insertion after, and PWM input terminal 13 be low level when, first switch tube Q10 conducting, sampling resistor R27 inspection
It measures the electric current of first switch tube Q10 and generates sample rate current, sample rate current amplifies several times by operational amplifier, then passes through
Filter filtering, stable effective operating current after the output amplification of detection module 15.
When scrubbing brush is not inserted into and (extracts), breaking between the first output end 11 and second output terminal 12, PWM input terminal
13 be high level or low level when, sampling resistor R27 cannot detect the electric current of first switch tube Q10 and generate sampling electricity
Stream, detection module 15 is without effective operating current.
The working principle of the scrubbing brush driving device of 1 dust catcher of table
Based on above-mentioned working principle, it can be achieved that detection to scrubbing brush insert state, and when detecting that scrubbing brush is extracted, close
Pwm signal is closed, i.e., so that pwm signal is high level, so that the scrubbing brush pluggable terminals of the scrubbing brush driving device of dust catcher are not
Continue band high voltage, therefore safety, circuit board are low in energy consumption.In addition, detecting that scrubbing brush extracts, it, can be with after closing pwm signal
Certain low duty ratio pwm signal is opened in timing, so that scrubbing brush both ends is had a very low voltage, earth brush motor does not move at this time, ground
Weak current of the brush pluggable terminals with very little.So that weak current of the scrubbing brush pluggable terminals not timing with very little, therefore safety, electricity
Road plate is low in energy consumption.
Fig. 3 is the flow chart of the scrubbing brush control method of the scrubbing brush driving device based on dust catcher shown in Fig. 2.
As shown in figure 3, the scrubbing brush control method includes:
S201: start to discharge.
S202: output scrubbing brush pwm signal (PWM input terminal 13 has control pulse).
S203: constant current closed-loop control or non-closed-loop control.
S204: detecting state is pulled out into scrubbing brush.
S205: judge whether detection module 15 continues to export without effective operating current for X seconds.
Detecting state is pulled out if it is not, then returning to S204 and reentering scrubbing brush；If so, entering step 206.
S206: judging that result is pulled out for scrubbing brush, closes scrubbing brush pwm signal (PWM input terminal 13 is high level).
S207: enter scrubbing brush and access detecting state.
S208: timing PWM input terminal 13 is A, and scrubbing brush both end voltage is B at this time, and earth brush motor is motionless.
S209: judge whether detection module 15 continues to have electric current Ia in X seconds.
If it is not, then returning to S207 reenters scrubbing brush access detecting state；If so, entering step S210.
S210: judging result for scrubbing brush insertion, and returning to S202 output scrubbing brush pwm signal, (PWM input terminal 13 has control arteries and veins
Punching).
The scrubbing brush driving device of the dust catcher of the utility model embodiment, PWM input terminal receive pwm signal, the first output
It holds and driving signal is generated according to pwm signal the drive module between second output terminal, and driving signal is exported to described the
One output end and second output terminal, the detection module being connected with first switch tube complete the detection of the scrubbing brush insert state, from
And when can be not inserted into and (extract) detecting scrubbing brush, pwm signal is closed, i.e., so that pwm signal is high level, makes dust catcher
The scrubbing brush pluggable terminals of scrubbing brush driving device do not continue band high voltage, therefore safety, circuit board are low in energy consumption, in addition anti-without increasing
Interface is presented, therefore design is simple, easily assembled, at low cost, harness is few.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Identical embodiment or example need not be directed to by stating.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.In addition, without conflicting with each other, this field
Technical staff can carry out the feature of different embodiments or examples described in this specification and different embodiments or examples
Combination and combination.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (7)
1. a kind of scrubbing brush driving device of dust catcher characterized by comprising
First output end and second output terminal, first output end and second output terminal are connected with scrubbing brush；
PWM input terminal, for receiving pwm signal；
The drive module being connected between the PWM input terminal and first output end and second output terminal is used for basis
The pwm signal generates driving signal, and driving signal is exported to first output end and second output terminal；
Detection module, the detection module are connected with first switch tube, for detecting the insert state of the scrubbing brush；
The drive module includes:
The first switch tube being connected with the second output terminal；
The first order driver being connected with the PWM input terminal；
The second level driver being connected with the output end of the first order driver；
The third level driver being connected with the output end of the second level driver, the output end of the third level driver and institute
The control terminal for stating first switch tube is connected.
2. the scrubbing brush driving device of dust catcher as described in claim 1, which is characterized in that the first order driver includes:
The first end of first resistor, the first resistor is connected with power supply；
Second resistance, the first end of the second resistance are connected with the PWM input terminal；
The control terminal of first driving tube, first driving tube is connected with the second end of the second resistance, first driving
The first end of pipe is connected with the second end of the first resistor；
3rd resistor, the first end of the 3rd resistor are connected with the second end of first driving tube, the 3rd resistor
Second end ground connection, wherein the first end of the 3rd resistor is the output end of the first order driver.
3. the scrubbing brush driving device of dust catcher as described in claim 1, which is characterized in that the second level driver includes:
The first end of 4th resistance, the 4th resistance is connected with power supply；
The first end of 5th resistance, the 5th resistance is connected with the second end of the 4th resistance；
Second driving tube, the control terminal of second driving tube are connected with the output end of the first order driver, and described second
The first end of driving tube is connected with the second end of the 5th resistance, the second end ground connection of second driving tube；
Third driving tube, the control terminal of the third driving tube are connected with the second end of the 4th resistance, the third driving
The first end of pipe is connected with the power supply；
The first end of 6th resistance, the 6th resistance is connected with the second end of the third driving tube；
The first end of 7th resistance, the 7th resistance is connected with the second end of the 6th resistance, and the of the 7th resistance
Two ends ground connection, wherein the second end of the 6th resistance is the output end of the second level driver.
4. the scrubbing brush driving device of dust catcher as described in claim 1, which is characterized in that the third level driver includes:
First diode, the anode of the first diode are connected with the output end of the second level driver；
The control terminal of 4th driving tube, the 4th driving tube is connected with the output end of the second level driver, and the described 4th
The first end of driving tube is connected with the cathode of the first diode, the second end ground connection of the 4th driving tube；
The first end of 8th resistance, the 8th resistance is connected with the cathode of the first diode, and the of the 8th resistance
Two ends ground connection, wherein output end and the first switch tube of the cathode of the first diode for the third level driver
Control terminal be connected.
5. the scrubbing brush driving device of dust catcher as described in claim 1, which is characterized in that further include:
The second diode being connected between first output end and second output terminal.
6. the scrubbing brush driving device of dust catcher as described in claim 1, which is characterized in that the detection module includes:
Sampling resistor, the sampling resistor are used to detect the electric current of the first switch tube and generate sample rate current；
Operational amplifier, the operational amplifier are connected with the sampling resistor, for being amplified to the sample rate current,
In, scrubbing brush insert state testing result is generated according to the sample rate current.
7. the scrubbing brush driving device of dust catcher as claimed in claim 6, which is characterized in that the detection module further include:
Filter, the filter are connected with the operational amplifier, for being filtered to amplified sample rate current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821235727.8U CN209003820U (en) | 2018-08-02 | 2018-08-02 | The scrubbing brush driving device of dust catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821235727.8U CN209003820U (en) | 2018-08-02 | 2018-08-02 | The scrubbing brush driving device of dust catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209003820U true CN209003820U (en) | 2019-06-21 |
Family
ID=66830696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821235727.8U Active CN209003820U (en) | 2018-08-02 | 2018-08-02 | The scrubbing brush driving device of dust catcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209003820U (en) |
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2018
- 2018-08-02 CN CN201821235727.8U patent/CN209003820U/en active Active
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