CN211786693U - Current control system and tooth rinsing device - Google Patents
Current control system and tooth rinsing device Download PDFInfo
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- CN211786693U CN211786693U CN202020693145.5U CN202020693145U CN211786693U CN 211786693 U CN211786693 U CN 211786693U CN 202020693145 U CN202020693145 U CN 202020693145U CN 211786693 U CN211786693 U CN 211786693U
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Abstract
The utility model provides a current control system and towards tooth ware relates to the technical field who dashes tooth ware, include: the device comprises a controller, a motor driving circuit, a motor and a voltage and current detection circuit; when the controller sends a driving signal to control the motor to work through the motor driving circuit, the voltage and current detection circuit detects the voltage and current information output by the motor driving circuit and feeds the voltage and current information back to the controller; the controller adjusts the duty ratio of the driving signal based on the voltage and current information to stabilize the current output by the motor. The utility model discloses a voltage current detection circuit can realize closed loop feedback, the size of self-adaptation regulation motor input current to make the output current of motor stable, be applied to this current control system and wash tooth ware in, can solve because the output current of motor unstable the play water effect that leads to poor, wash the unstable technical problem of tooth dynamics, promoted the user and experienced towards tooth.
Description
Technical Field
The utility model belongs to the technical field of towards tooth ware technique and specifically relates to a current control system and towards tooth ware is related to.
Background
The existing tooth flushing device mainly cleans teeth through high-pressure water flow. That is, the high pressure water flow can enter the lumen without obstruction to complete the cleaning operation. The oral cavity is like a large bacteria storage place, and if some microorganisms adhered to the surfaces of teeth cannot be cleaned in time, dental plaque can be formed, and can not be removed through tooth brushing and mouth rinsing, and periodontitis can be caused in serious cases. Because the high-pressure water flow ejected by the tooth flushing device can go deep into the gaps between teeth, bacteria in the gaps between teeth and gullies of gum can be removed, and the best cleaning effect can be achieved. However, the existing tooth flushing device has the technical problems that the water outlet effect is poor due to unstable output current of the motor, the tooth flushing force is unstable, and the tooth flushing experience of a user is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a current control system and towards tooth ware to it is poor to have alleviated the play water effect that leads to because the output current of motor is unstable among the prior art, and it is unstable to dash the tooth dynamics, and the user dashes the relatively poor technical problem of tooth experience.
The utility model provides a pair of current control system, wherein, include: the device comprises a controller, a motor driving circuit, a motor and a voltage and current detection circuit; the controller, the motor driving circuit and the motor are sequentially connected, the input end of the voltage and current detection circuit is connected with the output end of the motor driving circuit, and the output end of the voltage and current detection circuit is connected with the input end of the controller; when the controller sends a driving signal to control the motor to work through the motor driving circuit, the voltage and current detection circuit detects voltage and current information output by the motor driving circuit and feeds the voltage and current information back to the controller; the controller adjusts the duty ratio of the driving signal based on the voltage and current information to stabilize the current output by the motor.
Further, the voltage current detection circuit includes: an arithmetic circuit and a voltage divider circuit; one end of the arithmetic circuit is connected with the motor driving circuit, and the other end of the arithmetic circuit is connected with one end of the voltage division circuit; the other end of the voltage division circuit is connected with the controller.
Further, the arithmetic circuit includes: the circuit comprises an operational amplifier, a first capacitor, a second capacitor, a first resistor and a second resistor; a first pin of the operational amplifier is connected with the voltage division circuit, a second pin of the operational amplifier is grounded, a third pin of the operational amplifier is connected with the motor driving circuit, a fourth pin of the operational amplifier is connected with the voltage division circuit through the second capacitor, a fifth pin of the operational amplifier is connected with the controller, and the fifth pin of the operational amplifier is grounded through the first capacitor; one end of the first resistor is connected with the voltage division circuit, the other end of the first resistor is connected with one end of the second resistor, and the other end of the second resistor is grounded.
Further, the voltage dividing circuit includes: a third resistor, a third capacitor and a fourth capacitor;
one end of the third resistor is connected with the operational amplifier, the other end of the third resistor is connected with the controller, the other end of the third resistor is grounded through the third capacitor, the other end of the third resistor is grounded through the fourth capacitor, and the third capacitor is connected with the fourth capacitor in parallel.
Further, the current control system further includes: a battery module; the battery module is connected with the controller and the motor driving circuit.
Further, the controller includes any one of: singlechip, DSP and ARM.
Further, the controller includes: the first chip, the fifth capacitor and the sixth capacitor;
the first pin of the first chip is connected with the anode of the battery module, the first pin of the first chip is grounded through the fifth capacitor, and the first pin of the first chip is grounded through the sixth capacitor; the fifth capacitor and the sixth capacitor are connected in parallel;
the second pin of the first chip is connected with the motor driving circuit; the third pin of the first chip is connected with the motor driving circuit; a fourth pin of the first chip is connected with a fifth pin of the operational amplifier; a fifth pin of the first chip is connected with the other end of the third resistor; and the sixth pin of the first chip is grounded.
Further, the motor drive circuit includes: the second chip, a fourth resistor, a fifth resistor, a sixth capacitor and a seventh capacitor; the first pin of the second chip is connected with the third pin of the first chip through the fourth resistor; the second pin of the second chip is connected with the second pin of the first chip through the fifth resistor; the third pin of the second chip is connected with the positive electrode of the battery module; the third pin of the second chip is also grounded through the sixth capacitor; a fourth pin of the second chip is connected with one end of the motor, and the fourth pin of the second chip is also connected with the other end of the motor through the seventh capacitor; after the fifth pin of the second chip is connected with the sixth pin of the second chip, the fifth pin of the second chip is grounded through the sixth resistor; the fifth pin of the second chip is connected with the sixth pin of the second chip and then is also connected with the third pin of the operational amplifier; and a seventh pin of the second chip is connected with the other end of the motor, and the seventh pin of the second chip is also connected with one end of the motor through the seventh capacitor.
Further, the model of the first chip is UPT8E1214, and the model of the second chip is UPT 8518.
The utility model provides a pair of tooth flushing device, include current control system, water tank, outlet pipe and LED lamp.
The utility model provides a pair of current control system and towards tooth ware, include: the device comprises a controller, a motor driving circuit, a motor and a voltage and current detection circuit; the controller, the motor driving circuit and the motor are sequentially connected, the input end of the voltage and current detection circuit is connected with the output end of the motor driving circuit, and the output end of the voltage and current detection circuit is connected with the input end of the controller; when the controller sends a driving signal to control the motor to work through the motor driving circuit, the voltage and current detection circuit detects the voltage and current information output by the motor driving circuit and feeds the voltage and current information back to the controller; the controller adjusts the duty ratio of the driving signal based on the voltage and current information to stabilize the current output by the motor. The utility model discloses a voltage current detection circuit can realize closed loop feedback, the size of self-adaptation regulation motor input current to make the output current of motor stable, be applied to this current control system and wash tooth ware in, can solve because the output current of motor is unstable the play water effect that leads to is poor, and the technical problem that tooth dynamics is unstable is washed, has promoted the user and has washed tooth and experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first current control system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second current control system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third current control system according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a tooth rinsing device according to an embodiment of the present invention.
Icon:
10-a controller; 20-a motor drive circuit; 30-a motor; 40-a voltage current detection circuit; 50-a battery module; 100-a water tank; 200-water outlet pipe; 300-LED lamp.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The existing tooth flushing device mainly cleans teeth through high-pressure water flow. That is, the high pressure water flow can enter the lumen without obstruction to complete the cleaning operation. The oral cavity is like a large bacteria storage place, and if some microorganisms adhered to the surfaces of teeth cannot be cleaned in time, dental plaque can be formed, and can not be removed through tooth brushing and mouth rinsing, and periodontitis can be caused in serious cases. Because the high-pressure water flow ejected by the tooth flushing device can go deep into the gaps between teeth, bacteria in the gaps between teeth and gullies of gum can be removed, and the best cleaning effect can be achieved. Different tooth rinsers currently generate high-pressure water flow in different ways, such as: the tooth flusher product of Philips utilizes short and strong air injection to bring out water spray, and the tooth flusher product loosened utilizes ultrasonic waves to spray continuous high-pressure water flow and pulse high-pressure water flow. For pulsed high pressure water flow, the manner of generating high pressure water flow is: during the movement of the gear piston driven by the motor, a water pump is generated to spray high-pressure water flow under huge pressure.
The existing tooth flushing device has the following defects: in the process of continuously pumping water by the water pump, the water level in the water tank of the tooth flushing device is continuously reduced. Along with the reduction of the water level, the pressure intensity of a water pipe for pumping water at the bottom of the water tank is also gradually reduced, so that the current of the motor is reduced in a loaded state, the tooth flushing force is weakened, and the tooth flushing effect of the tooth flushing device is weakened under the condition that the water level of the water tank is low.
In conclusion, the existing tooth flushing device has the technical problems that the water outlet effect is poor due to unstable output current of the motor, the tooth flushing force is unstable, and the tooth flushing experience of a user is poor. Based on this, the utility model provides a pair of current control system and towards tooth ware can realize closed loop feedback through voltage current detection circuit, the size of self-adaptation adjustment motor input current to the output current who makes the motor is stable, is applied to towards tooth ware with this current control system, can guarantee that the output current of motor is stable, and then can make the play water of towards tooth ware effectual, and it is stable to dash the tooth dynamics, promotes the user and dashes tooth and experience.
For the convenience of understanding the present embodiment, a detailed description will be given of a current control system disclosed in an embodiment of the present invention.
The first embodiment is as follows:
referring to fig. 1, an embodiment of the present invention provides a current control system, which may include: a controller 10, a motor drive circuit 20, a motor 30, and a voltage current detection circuit 40. The connection relationship among the modules of the current control system is as follows: the controller 10, the motor driving circuit 20 and the motor 30 are connected in sequence, an input end of the voltage and current detection circuit 40 is connected with an output end of the motor driving circuit 20, and an output end of the voltage and current detection circuit 40 is connected with an input end of the controller 10.
In an embodiment of the present invention, the working mechanism of the current control system is as follows: when the controller 10 sends a driving signal to control the motor 30 to work through the motor driving circuit 20, the voltage and current detection circuit 40 detects the voltage and current information output by the motor driving circuit 20 and feeds the voltage and current information back to the controller 10; the controller 10 adjusts the duty ratio of the driving signal based on the voltage current information to stabilize the current output from the motor 30.
The utility model provides a pair of current control system, include: a controller 10, a motor drive circuit 20, a motor 30, and a voltage current detection circuit 40; the controller 10, the motor driving circuit 20 and the motor 30 are sequentially connected, an input end of the voltage and current detection circuit 40 is connected with an output end of the motor driving circuit 20, and an output end of the voltage and current detection circuit 40 is connected with an input end of the controller 10; when the controller 10 sends a driving signal to control the motor 30 to work through the motor driving circuit 20, the voltage and current detection circuit 40 detects the voltage and current information output by the motor driving circuit 20 and feeds the voltage and current information back to the controller 10; the controller 10 adjusts the duty ratio of the driving signal based on the voltage current information to stabilize the current output from the motor 30. The embodiment of the utility model provides a can realize closed loop feedback, the size of self-adaptation adjustment motor 30 input current through voltage current detection circuit 40 to make motor 30's output current stable, be applied to this current control system and dash the tooth ware in, can solve the play water effect that leads to by the electric current unstability poor, dash the unstable technical problem of tooth dynamics, promoted the user and dashed tooth and experienced.
Further, referring to fig. 2, an embodiment of the present invention provides a second current control system, further including: a battery module 50; the battery module 50 is connected to the controller 10, and the battery module 50 is also connected to the motor drive circuit 20.
In the present embodiment, the controller 10 includes but is not limited to: a single chip, a DSP (Digital signal processing, Digital signal processor) and an ARM (Advanced RISC Machine). The single chip microcomputer may be referred to as an MCU (micro controller Unit).
When the current control system is applied to a tooth washing device, the controller 10 sends a driving signal to the motor driving circuit 20 (or called as a driving IC), and then the electric energy generated by the power supply of the driving IC through the battery module 50 is supplied to the motor 30 (the motor 30 may refer to a direct current motor 30 or a unidirectional motor 30), so as to drive the piston to work and generate high-pressure water flow. In the feedback loop, increase a voltage current detection circuit 40, this voltage current detection circuit 40 can be through MCU feedback regulation drive signal's frequency or duty cycle, and then drive IC outputs corresponding drive signal, thereby control motor 30 carries out steady rotation with required rotational speed, can real-time supervision towards the change of the output current of tooth ware at working phase motor 30, and then become ADC signal with this change information sampling and send MCU to handle, and then change the power of drive signal through the current software algorithm on the MCU, make the operating current of towards the tooth ware stabilize in a scope that is most suitable for the user to use.
Further, referring to fig. 3, in a third current control system provided in the embodiment of the present invention, the voltage/current detection circuit 40 includes: an arithmetic circuit and a voltage divider circuit; one end of the operational circuit is connected with the motor driving circuit 20, and the other end of the operational circuit is connected with one end of the voltage dividing circuit; the other end of the voltage divider circuit is connected to the controller 10.
Further, referring to fig. 3, the arithmetic circuit includes: an operational amplifier (U8 in fig. 3), a first capacitor (C30 in fig. 3), a second capacitor (C28 in fig. 3), a first resistor (R20 in fig. 3), and a second resistor (R21 in fig. 3); a first pin (OUT of U8 IN fig. 3) of the operational amplifier is connected to the voltage divider circuit, a second pin (GND of U8 IN fig. 3) of the operational amplifier is grounded, a third pin (IN +) of U8 IN fig. 3 of the operational amplifier is connected to the motor driver circuit 20, a fourth pin (IN-) of U8 IN fig. 3 of the operational amplifier is connected to the voltage divider circuit through a second capacitor C28, a fifth pin (VCC of U8 IN fig. 3) of the operational amplifier is connected to the controller 10, and the fifth pin of the operational amplifier is also grounded through the first capacitor; one end of the first resistor is connected with the voltage division circuit, the other end of the first resistor is connected with one end of the second resistor, and the other end of the second resistor is grounded.
Taking the operation circuit in fig. 3 as an example, the capacitance of the first capacitor may be 0.1uF, and the capacitance of the second capacitor is 104And F, the resistance value of the first resistor is 10K omega, and the resistance value of the second resistor is 1K omega. It should be noted that, the embodiments of the present invention do not specifically limit the sizes of the first capacitor, the second capacitor, the first resistor, and the second resistor.
Further, referring to fig. 3, the voltage dividing circuit includes: a third resistor (R22 in fig. 3), a third capacitor (C9 in fig. 3) and a fourth capacitor (C27 in fig. 3); one end of the third resistor is connected with the operational amplifier, the other end of the third resistor is connected with the controller 10, the other end of the third resistor is grounded through a third capacitor, the other end of the third resistor is grounded through a fourth capacitor, and the third capacitor is connected with the fourth capacitor in parallel.
Taking the voltage divider circuit in fig. 3 as an example, the resistance of the third resistor may be 1K Ω, the capacitance of the third capacitor is 22uF, and the capacitance of the fourth capacitor is 0.1 uF. It should be noted that, the embodiments of the present invention do not specifically limit the sizes of the third resistor, the third capacitor, and the fourth capacitor.
Further, referring to fig. 3, the controller 10 includes: a first chip (U4 in fig. 3), a fifth capacitor (C3 in fig. 3), and a sixth capacitor (C5 in fig. 3); the first pin (VDD of U4 in fig. 3) of the first chip is connected to the positive electrode of the battery module 50, the first pin of the first chip is further grounded through being connected to the fifth capacitor, and the first pin of the first chip is further grounded through being connected to the sixth capacitor; the fifth capacitor and the sixth capacitor are connected in parallel; the second pin (PC 5 of U4 in fig. 3) of the first chip is connected to the motor driving circuit 20; the third pin (PC 4 of U4 in fig. 3) of the first chip is connected to the motor drive circuit 20; the fourth pin (PC 1 of U4 in FIG. 3) of the first chip is connected with the fifth pin of the operational amplifier; the fifth pin (PA 1 of U4 in FIG. 3) of the first chip is connected with the other end of the third resistor; the sixth pin of the first chip (VSS of U4 in fig. 3) is grounded.
In the embodiment of the present invention, the model of the first chip may be UPT8E1214, and the first chip includes the following pins in addition to some pins given above: pin PA7 (PA 7 of U4 in FIG. 3), pin PA6 (PA 6 of U4 in FIG. 3), pin PA7 (PA 7 of U4 in FIG. 3); pin PC3, pin PC2, and pin PA4 (PC 3, PC2, and PA4, respectively, of U4 in fig. 3). The embodiment of the utility model provides a do not specifically prescribe a limit to the model of first chip, do not specifically prescribe a limit to the pin number and the pin function of first chip yet. The fifth electric capacity can be 22uF, and the sixth electric capacity is 0.1uF, the embodiment of the utility model provides a do not do specifically limit to the size of fifth electric capacity, sixth electric capacity.
Further, referring to fig. 3, the motor drive circuit 20 includes: a second chip (U5 in fig. 3, otherwise referred to as a driving chip), a fourth resistor (R4 in fig. 3), a fifth resistor (R3 in fig. 3), a sixth resistor (R19 in fig. 3), a sixth capacitor (C4 in fig. 3), and a seventh capacitor (C6 in fig. 3); the first pin (NC of U5 in FIG. 3) of the second chip is connected with the third pin of the first chip through a fourth resistor; the second pin (INB of U5 in FIG. 3) of the second chip is connected with the second pin of the first chip through a fifth resistor; the third pin (VDD of U5 in fig. 3) of the second chip is connected to the positive electrode of the battery module 50; the third pin of the second chip is grounded through a sixth capacitor; the fourth pin (OUTB of U5 in fig. 3) of the second chip is connected to one end of the motor 30, and the fourth pin of the second chip is also connected to the other end of the motor 30 through a seventh capacitor; the fifth pin of the second chip (AGND of U5 in fig. 3) is grounded through the sixth resistor after being connected to the sixth pin of the second chip; the fifth pin of the second chip is connected with the third pin of the operational amplifier after being connected with the sixth pin (PGND of U5 in fig. 3) of the second chip; the seventh pin of the second chip (OUTA of U5 in fig. 3) is connected to the other end of the motor 30, and the seventh pin of the second chip is also connected to one end of the motor 30 through a seventh capacitor.
In the embodiment of the present invention, the model of the second chip is UPT 8518. The embodiment of the utility model provides a do not specifically prescribe a limit to the model of second chip. Referring to fig. 3, the fourth resistor may have a resistance of 4.7K Ω, the fifth resistor may have a resistance of 4.7K Ω, the sixth resistor may have a resistance of 0.3K Ω, the sixth capacitor may have a capacitance of 1uF, and the seventh capacitor may have a capacitance of 0.1 uF. It should be noted that the embodiments of the present invention do not specifically limit the sizes of the fourth resistor, the fifth resistor, the sixth capacitor, and the seventh capacitor.
Referring to fig. 3 and the above description, specific configurations of the voltage current detection circuit 40, the motor drive circuit 20, and the controller 10 are given. The following describes the workflow of the current control system applied to the tooth irrigator in combination with the specific structure of the above 3 modules:
when the tooth flushing device is in the working state, the first chip UPT8E1214 sends out a driving signal to be transmitted to the motor 30 through the second chip UPT8518, after the analog ground and the protective ground of the second chip are connected through the C4, the second chip is connected with the R19(R22 is a sampling resistor), and the sampling signal of the sampling resistor is sent to the positive electrode IN + of an operational amplifier (operational amplifier for short), the negative electrode IN-of the operational amplifier is connected with R22(R22 is a negative feedback divider resistor), after the internal calculation of the operational amplifier, an ADC sampling signal is output and fed back to the fifth pin of the first chip of the MCU, the pin has an analog-to-digital conversion function to form a closed loop feedback loop, the MCU adjusts (increases) the duty cycle of the driving signal to increase the input current of the motor 30, therefore, the output current of the motor 30 is controlled to be stably output when the pressure of the water tank changes, namely, the current of the tooth flushing device is stably output when the pressure of the water tank changes.
The utility model provides a current control system has following advantage: advantage 1, this embodiment can stabilize the output current of motor 30 in a fixed scope through the closed loop feedback of internal circuit, gives the better appearance of dashing the tooth of user to can effectual improvement dash tooth efficiency. The method has the advantages that 2, the method can be realized only through a hardware circuit and an existing software algorithm on the MCU, structural change is avoided, and cost can be effectively reduced.
Example two:
referring to fig. 4, the embodiment of the present invention provides a tooth rinsing device, which includes a current control system as described in the first embodiment, a water tank 100, a water outlet pipe 200 and an LED lamp 300.
In the embodiment of the present invention, the LED lamps 300 may be multiple, and the LED lamps 300 at different positions may be used to indicate different levels of tooth punching force. When a user presses a switch of the lower tooth flusher, the tooth flusher is in a working state, and along with the increase of the working time of the tooth flusher, the water level in the water tank 100 is continuously reduced, so that the current carried by the motor is reduced (namely the current output by the motor is reduced), and the tooth flushing force of the tooth flusher is reduced.
The utility model discloses can also be through increasing an LDO voltage stabilizing circuit, with battery module's voltage stabilization at a suitable value to more can improve the additional uncontrollable interference that other variable changes and bring.
The embodiment of the utility model provides an in, MCU, drive IC, voltage current detection circuit, operational amplifier's lectotype can be according to actual parameter requirement and decide, the embodiment of the utility model provides a do not do specifically to this and restrict.
The embodiment of the utility model provides a voltage current detection circuit through among the current control system can realize the closed loop feedback, the size of self-adaptation regulation motor input current to make the output current of motor stable, be applied to this current control system and dash the tooth ware in, can solve the play water effect that leads to by the electric current is poor, dash the unstable technical problem of tooth dynamics, promoted the user and dashed tooth and experience.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the tooth flushing device described above may refer to the corresponding process in the first embodiment, and will not be described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A current control system, comprising: the device comprises a controller, a motor driving circuit, a motor and a voltage and current detection circuit; the controller, the motor driving circuit and the motor are sequentially connected, the input end of the voltage and current detection circuit is connected with the output end of the motor driving circuit, and the output end of the voltage and current detection circuit is connected with the input end of the controller;
when the controller sends a driving signal to control the motor to work through the motor driving circuit, the voltage and current detection circuit detects voltage and current information output by the motor driving circuit and feeds the voltage and current information back to the controller;
the controller adjusts the duty ratio of the driving signal based on the voltage and current information to stabilize the current output by the motor.
2. The current control system of claim 1, wherein the voltage current detection circuit comprises: an arithmetic circuit and a voltage divider circuit;
one end of the arithmetic circuit is connected with the motor driving circuit, and the other end of the arithmetic circuit is connected with one end of the voltage division circuit; the other end of the voltage division circuit is connected with the controller.
3. The current control system of claim 2, wherein the operational circuit comprises: the circuit comprises an operational amplifier, a first capacitor, a second capacitor, a first resistor and a second resistor;
a first pin of the operational amplifier is connected with the voltage division circuit, a second pin of the operational amplifier is grounded, a third pin of the operational amplifier is connected with the motor driving circuit, a fourth pin of the operational amplifier is connected with the voltage division circuit through the second capacitor, a fifth pin of the operational amplifier is connected with the controller, and the fifth pin of the operational amplifier is grounded through the first capacitor;
one end of the first resistor is connected with the voltage division circuit, the other end of the first resistor is connected with one end of the second resistor, and the other end of the second resistor is grounded.
4. The current control system of claim 3, wherein the voltage divider circuit comprises: a third resistor, a third capacitor and a fourth capacitor;
one end of the third resistor is connected with the operational amplifier, the other end of the third resistor is connected with the controller, the other end of the third resistor is grounded through the third capacitor, the other end of the third resistor is grounded through the fourth capacitor, and the third capacitor is connected with the fourth capacitor in parallel.
5. The current control system of claim 4, further comprising: a battery module; the battery module is connected with the controller and the motor driving circuit.
6. The current control system of claim 5, wherein the controller comprises any one of: singlechip, DSP and ARM.
7. The current control system of claim 6, wherein the controller comprises: the first chip, the fifth capacitor and the sixth capacitor;
the first pin of the first chip is connected with the anode of the battery module, the first pin of the first chip is grounded through the fifth capacitor, and the first pin of the first chip is grounded through the sixth capacitor; the fifth capacitor and the sixth capacitor are connected in parallel;
the second pin of the first chip is connected with the motor driving circuit; the third pin of the first chip is connected with the motor driving circuit; a fourth pin of the first chip is connected with a fifth pin of the operational amplifier; a fifth pin of the first chip is connected with the other end of the third resistor; and the sixth pin of the first chip is grounded.
8. The current control system of claim 7, wherein the motor drive circuit comprises: the second chip, a fourth resistor, a fifth resistor, a sixth capacitor and a seventh capacitor;
the first pin of the second chip is connected with the third pin of the first chip through the fourth resistor;
the second pin of the second chip is connected with the second pin of the first chip through the fifth resistor;
the third pin of the second chip is connected with the positive electrode of the battery module; the third pin of the second chip is also grounded through the sixth capacitor;
a fourth pin of the second chip is connected with one end of the motor, and the fourth pin of the second chip is also connected with the other end of the motor through the seventh capacitor;
after the fifth pin of the second chip is connected with the sixth pin of the second chip, the fifth pin of the second chip is grounded through the sixth resistor;
the fifth pin of the second chip is connected with the sixth pin of the second chip and then is also connected with the third pin of the operational amplifier;
and a seventh pin of the second chip is connected with the other end of the motor, and the seventh pin of the second chip is also connected with one end of the motor through the seventh capacitor.
9. The current control system of claim 8, wherein the first chip is of the type UPT8E1214 and the second chip is of the type UPT 8518.
10. A water toothpick comprising a current control system as claimed in any one of claims 1 to 9, a water tank, a water outlet tube and an LED light.
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| CN202020693145.5U CN211786693U (en) | 2020-04-28 | 2020-04-28 | Current control system and tooth rinsing device |
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| CN202020693145.5U CN211786693U (en) | 2020-04-28 | 2020-04-28 | Current control system and tooth rinsing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013840A (en) * | 2021-02-24 | 2021-06-22 | 深圳市太美亚电子科技有限公司 | Water shortage protection circuit and method for tooth washing device |
| CN114848197A (en) * | 2022-04-20 | 2022-08-05 | 深圳素士科技股份有限公司 | Control method and device for point-breaking type output water flow of tooth flushing device |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113013840A (en) * | 2021-02-24 | 2021-06-22 | 深圳市太美亚电子科技有限公司 | Water shortage protection circuit and method for tooth washing device |
| CN114848197A (en) * | 2022-04-20 | 2022-08-05 | 深圳素士科技股份有限公司 | Control method and device for point-breaking type output water flow of tooth flushing device |
| CN114848197B (en) * | 2022-04-20 | 2024-04-19 | 深圳素士科技股份有限公司 | Method and device for controlling point-off type output water flow of tooth flusher |
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