CN210446905U - Dust collector main board - Google Patents
Dust collector main board Download PDFInfo
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- CN210446905U CN210446905U CN201921078204.1U CN201921078204U CN210446905U CN 210446905 U CN210446905 U CN 210446905U CN 201921078204 U CN201921078204 U CN 201921078204U CN 210446905 U CN210446905 U CN 210446905U
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Abstract
The utility model relates to a dust catcher mainboard, be provided with the current monitoring circuit who is used for monitoring mainboard current on the dust catcher mainboard, be used for monitoring the voltage monitoring circuit of mainboard voltage, and with the main control chip of current monitoring circuit and voltage monitoring circuit connection, main control chip basis the level height of signal acquisition pin is right the output of motor is controlled. The utility model discloses whether normal work of motor is judged to accessible monitoring mainboard electric current and voltage to when necessary automatic cutout power supply prevents to take place the incident.
Description
Technical Field
The utility model relates to a dust catcher equipment technical field, in particular to dust catcher mainboard.
Background
The vacuum cleaner uses a dirt cup to receive the sucked dirt and dust, which is placed at the position of the air inlet. After the dust collector works for a period of time, a lot of garbage and dust can be sucked into the dust cup, when the garbage in the dust cup is too much, the air inlet is blocked, the dust collector does not suck air, the motor and the battery of the dust collector are prone to serious heating, if the duration is too long, the motor is overheated and burnt out, and even the battery can explode.
The existing blockage of the dust collector is generally detected through a mechanical air switch, the air pressure of sucked air is detected, when the sucked air reaches rated air pressure, the air switch is switched to an ON state, and a signal is output to a main control circuit.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a main board of a vacuum cleaner, which can determine whether a motor works normally by monitoring the current and voltage of the main board, and automatically cut off the power supply when necessary, thereby preventing safety accidents.
In order to achieve the above purpose, the present invention adopts the following technical solutions.
The utility model provides a dust collector main board, which is provided with a current monitoring circuit for monitoring the current of the main board, a voltage monitoring circuit for monitoring the voltage of the main board, and a main control chip connected with the current monitoring circuit and the voltage monitoring circuit, wherein,
the input end of the current monitoring circuit is connected to a motor of the dust collector and is used for sampling and monitoring the output current of the motor;
the input end of the voltage monitoring circuit is connected to a motor of the dust collector and is used for sampling and monitoring the output current of the motor;
the output ends of the current monitoring circuit and the voltage monitoring circuit are respectively connected to the two signal acquisition pins of the main control chip, and the main control chip controls the output power of the motor according to the level of the signal acquisition pins.
Preferably, the current monitoring module has two resistors connected in parallel, wherein one end of one resistor is connected with the output end of the motor, and the other end is grounded; one end of the other resistor is also connected with the output end of the motor, and the other end of the other resistor is connected to a signal acquisition pin of the main control chip.
Preferably, the voltage monitoring module has three resistors, one end of one of the resistors is connected to the signal acquisition pin of the main control chip, the other end of the one of the resistors is connected to the other two resistors, one of the other two resistors is grounded, and the other one of the other two resistors is connected to the output end of the motor.
Preferably, still include anti-blocking circuit, anti-blocking circuit is provided with the temperature controller, anti-blocking circuit's one end is passed through the temperature controller with the motor is connected, and the other end connect in main control chip.
Preferably, the dust collector further comprises a power management circuit, the power management circuit is provided with a control end, the control end is connected with the main control chip, and when the main control chip receives the overheating signal output by the anti-blocking circuit, the main control chip outputs a pulse signal to the control end to control the power management circuit to cut off power supply.
Preferably, the temperature controller is a thermistor.
The utility model discloses a current monitoring circuit monitors mainboard current to monitor mainboard voltage through voltage monitoring circuit, judge whether the motor normally works through whether current and voltage are in normal condition, and the power supply is cut off automatically when necessary, prevent to take place the incident. The utility model has the advantages of fast response speed, safety and reliability.
Drawings
FIG. 1 is a block diagram of a circuit of a main board of a vacuum cleaner in this embodiment;
fig. 2 is a schematic circuit diagram of the main board of the vacuum cleaner in this embodiment.
The purpose of the present invention, its function and principle will be further elucidated in the detailed description with reference to the accompanying drawings.
Detailed Description
The following further description is made with reference to the drawings and specific embodiments.
As shown in fig. 1 and fig. 2, the present embodiment provides a cleaner main board 100, the cleaner main board 100 is provided with a current monitoring circuit 110 for monitoring a main board current, a voltage monitoring circuit 120 for monitoring a main board voltage, and a main control chip 130 connected to the current monitoring circuit 110 and the voltage monitoring circuit 120, wherein an input end of the current monitoring circuit 110 is connected to a motor 200 of the cleaner, and samples and monitors an output current of the motor 200.
The input end of the voltage monitoring circuit 120 is connected to the motor 200 of the vacuum cleaner, and samples and monitors the output current of the motor 200.
The output ends of the current monitoring circuit 110 and the voltage monitoring circuit 120 are respectively connected to two signal acquisition pins of the main control chip 130, and the main control chip 130 controls the output power of the motor 200 according to the level of the signal acquisition pins.
In this embodiment, the main control chip 130 may monitor the current signal output by the motor 200 through the current monitoring circuit 110, and the voltage monitoring circuit 120 may monitor the voltage signal output by the motor 200 to determine whether the motor 200 is in a normal operating state. When the current output from the motor 200 is less than a predetermined value, or when the voltage output from the motor 200 is less than a predetermined value, it can be determined that it is in a normal operating state.
Specifically, the current monitoring module 110 has two resistors R7 and R8 connected in parallel, wherein one end of one resistor R7 is connected to the output terminal of the motor 200, and the other end is grounded; one end of another resistor R8 is also connected to the output terminal of the motor 200, and the other end is connected to the signal collecting pin D2 of the main control chip 130.
The voltage monitoring module 120 has three resistors R9, R10 and R11, wherein one end of one resistor R9 is connected to the signal acquisition pin of the main control chip 130, the other end is connected to the other two resistors respectively, among the other two resistors, R10 is grounded, and R11 is connected to the output end of the motor 200.
The resistors R10 and R11 perform voltage division, and are used to detect the voltage signal output by the load motor 200, and input the voltage signal to the signal acquisition pin D1 of the main control chip 130 through R9.
The embodiment further comprises an anti-blocking circuit 140, wherein the anti-blocking circuit 140 is provided with a temperature controller, and the temperature controller can be a thermistor. One end of the anti-blocking circuit 140 is connected to the motor 200 through the temperature controller, and the other end is connected to the main control chip 130. Therefore, when the air inlet of the dust collector is blocked, the air inlet can be sensed in time through the temperature controller, and a signal is sent to the main control chip 130, and the main control chip 130 performs centralized control on the total circuit of the dust collector, including but not limited to reducing the input power of the motor 200 and stopping the dust collector when necessary.
In addition, the vacuum cleaner further comprises a power management circuit 150, wherein the power management circuit 150 has a control end, an input end and an output end, the input end is connected with the mains supply, and the output end is connected with the current monitoring circuit 110 and the voltage monitoring circuit 120. The control terminal is connected to the main control chip 130, and when receiving the overheat signal output by the anti-blocking circuit 140, the main control chip 130 outputs a pulse signal to the control terminal to control the power management circuit 150 to cut off power supply. The motor is prevented from generating safety accidents due to overheating.
To sum up, the utility model discloses a current monitoring circuit monitors mainboard electric current to monitor mainboard voltage through voltage monitoring circuit, judge whether the motor normally works through whether electric current and voltage are in normal condition, and the power supply is cut off automatically when necessary, prevent to take place the incident. The utility model has the advantages of fast response speed, safety and reliability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (6)
1. A dust collector main board is characterized in that: the main board of the dust collector is provided with a current monitoring circuit for monitoring the current of the main board, a voltage monitoring circuit for monitoring the voltage of the main board and a main control chip connected with the current monitoring circuit and the voltage monitoring circuit, wherein,
the input end of the current monitoring circuit is connected to a motor of the dust collector and is used for sampling and monitoring the output current of the motor;
the input end of the voltage monitoring circuit is connected to a motor of the dust collector and is used for sampling and monitoring the output current of the motor;
the output ends of the current monitoring circuit and the voltage monitoring circuit are respectively connected to the two signal acquisition pins of the main control chip, and the main control chip controls the output power of the motor according to the level of the signal acquisition pins.
2. The cleaner main plate of claim 1, wherein: the current monitoring module is provided with two resistors which are mutually connected in parallel, one end of one resistor is connected with the output end of the motor, and the other end of the resistor is grounded; one end of the other resistor is also connected with the output end of the motor, and the other end of the other resistor is connected to a signal acquisition pin of the main control chip.
3. The cleaner main plate of claim 1, wherein: the voltage monitoring module is provided with three resistors, one end of one resistor is connected to the signal acquisition pin of the main control chip, the other end of the resistor is respectively connected with the other two resistors, one of the other two resistors is grounded, and the other resistor is connected with the output end of the motor.
4. The cleaner main plate of claim 1, wherein: still including preventing stifled circuit, prevent stifled circuit and be provided with the temperature controller, prevent stifled circuit's one end and pass through the temperature controller with the motor is connected, the other end connect in main control chip.
5. The cleaner main plate of claim 4, wherein: the dust collector further comprises a power management circuit, the power management circuit is provided with a control end, the control end is connected with the main control chip, and when the main control chip receives the overheating signal output by the anti-blocking circuit, the main control chip outputs a pulse signal to the control end to control the power management circuit to cut off power supply.
6. The cleaner main plate of claim 4 or 5, wherein: the temperature controller is a thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078204.1U CN210446905U (en) | 2019-07-11 | 2019-07-11 | Dust collector main board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078204.1U CN210446905U (en) | 2019-07-11 | 2019-07-11 | Dust collector main board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210446905U true CN210446905U (en) | 2020-05-05 |
Family
ID=70445519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921078204.1U Active CN210446905U (en) | 2019-07-11 | 2019-07-11 | Dust collector main board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210446905U (en) |
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2019
- 2019-07-11 CN CN201921078204.1U patent/CN210446905U/en active Active
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