CN217292434U - Control circuit and electric shaver - Google Patents
Control circuit and electric shaver Download PDFInfo
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- CN217292434U CN217292434U CN202123446511.0U CN202123446511U CN217292434U CN 217292434 U CN217292434 U CN 217292434U CN 202123446511 U CN202123446511 U CN 202123446511U CN 217292434 U CN217292434 U CN 217292434U
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Abstract
The utility model discloses a control circuit and electric shaver. Wherein, the control circuit includes: a main control module; the switch driving module is used for being connected with the battery and the main control module respectively, receiving the vibration trigger signal and generating a first driving signal according to the vibration trigger signal; the switch module is respectively connected with the switch driving module and the battery and is used for switching a conduction state according to a first driving signal and a power supply; the motor driving module is respectively connected with the switch module and the main control module; and the sampling module is respectively connected with the motor driving module and the main control module and is used for acquiring the electric signal of the motor driving module. The embodiment of the application can avoid the problem of standby power consumption in startup modes such as touch or fingerprint identification and the like, and the defect of unfavorable waterproof design caused by a key switch, and can prolong the service life of the battery of the electric shaver.
Description
Technical Field
The utility model relates to a circuit control technical field especially relates to a control circuit and electric shaver.
Background
At present, the electric shaver is required to be washed with water to keep the electric shaver clean because hairs, skin debris and the like are accumulated in the electric shaver during daily use.
In the related art, the push-button type electric shaver generates a gap at the push-button, which is not favorable for the waterproof design. In an electric shaver (for example, in patent 201721429534.1, "an induction type electric shaver") that is turned on and off by an induction method such as touch or fingerprint recognition, although a better waterproof design can be implemented, it is necessary that a CPU of the electric shaver be in a long-term standby state, which may cause power consumption and further affect the usable time of the battery of the electric shaver.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a control circuit and electric shaver can realize the intelligent control of automatic shutdown when whipping the start and opening work, not contacting with the human body to shutdown zero-power consumption avoids using standby power consumption problem that on & off modes such as touch or fingerprint identification exist, and the shortcoming that is unfavorable for waterproof design that key switch brought, and can prolong when using of electric shaver battery.
According to the utility model discloses a control circuit of first aspect embodiment includes: a main control module; the switch driving module is used for being connected with the battery and the main control module respectively, receiving a vibration trigger signal and generating a first driving signal according to the vibration trigger signal; wherein the battery is used for providing power supply; the switch module is respectively connected with the switch driving module, the battery and the main control module; the motor driving module is respectively connected with the switch module and the main control module; the sampling module is respectively connected with the motor driving module and the main control module and is used for collecting electric signals of the motor driving module; the switch module is used for switching a conduction state according to the first driving signal and the power supply so as to supply power to the main control module and the motor driving module; wherein the on state comprises on and off; the main control module is used for generating a second driving signal, and the motor driving module is used for switching the working state according to the power supply and the second driving signal; the main control module is also used for updating the first driving signal according to the electric signal collected by the sampling module.
According to the utility model discloses control circuit has following beneficial effect at least: the vibration trigger signal is used as a trigger signal of the switch driving module, namely the switch driving module is used for generating a first driving signal according to the vibration trigger signal. When the switch module is conducted with the power supply according to the first driving signal, the power supply provided by the battery is transmitted to the main control module and the motor driving module through the switch module, and the motor driving module starts to work according to the power supply and the second driving signal. Therefore, the vibration trigger signal is used as the indirect control signal of the working state of the motor driving module in the embodiment of the application, and the key is not needed, so that the control circuit provided in the embodiment of the application can not only carry out better waterproof design, but also avoid the standby energy consumption phenomenon which occurs when the fingerprint or touch induction on-off mode is used for control. And the main control module is further used for updating the first driving signal according to the acquired electric signal, and when the main control module determines that the motor driving module is in no-load according to the electric signal acquired by the sampling module and/or the time duration of the no-load is greater than a preset time threshold, the main control module updates the first driving signal for turning on the switch module into the first driving signal for turning off the switch module, so that the motor driving module is automatically turned off and stops working. Therefore, the control circuit provided by the embodiment of the application can also reduce the power consumption of the battery, so that the service life of the battery is prolonged.
According to some embodiments of the invention, the switch drive module comprises: the vibration switch is used for being connected with the battery, receiving the vibration trigger signal and generating a sub-signal according to the vibration trigger signal; one end of the first resistor is connected with the vibration switch; a base electrode of the first triode is connected with the other end of the first resistor, an emitting electrode of the first triode is grounded, and a collecting electrode of the first triode is connected with the switch module; the first triode is used for generating the first driving signal according to the sub-signal; one end of the second resistor is connected with the base electrode of the first triode, and the other end of the second resistor is connected with the first port of the main control module; and one end of the first capacitor is connected with the base electrode of the first triode, and the other end of the first capacitor is grounded.
According to some embodiments of the invention, the switch module comprises: the source electrode of the second MOS tube is connected with the battery, and the drain electrode of the second MOS tube is connected with the motor driving module; one end of the third resistor is connected with the battery, and the other end of the third resistor is connected with the grid electrode of the second MOS tube; one end of the fourth resistor is connected with the grid electrode of the second MOS tube, and the other end of the fourth resistor is connected with the collector electrode of the first triode; one end of the second capacitor is connected with the drain electrode of the second MOS tube, and the other end of the second capacitor is grounded; wherein the second MOS transistor is used for switching the conducting state according to the first driving signal and the power supply.
According to some embodiments of the invention, the motor drive module comprises: the positive electrode of the motor is connected with the drain electrode of the second MOS tube; a drain electrode of the third MOS transistor is connected with a negative electrode of the motor, a gate electrode of the third MOS transistor is connected with the second port of the main control module, and a source electrode of the third MOS transistor is connected with the sampling module; the cathode of the diode is connected with the anode of the motor, and the anode of the diode is connected with the cathode of the motor; one end of the fifth resistor is connected with the grid electrode of the third MOS tube, and the other end of the fifth resistor is grounded; wherein the motor is used for switching the working state according to the power supply and the second driving signal.
According to some embodiments of the invention, the sampling module comprises: one end of the sixth resistor is connected with the source electrode of the third MOS tube, and the other end of the sixth resistor is grounded; one end of the seventh resistor is connected with one end of the sixth resistor, and the other end of the seventh resistor is connected with the third port of the main control module; and one end of the third capacitor is connected with the other end of the seventh resistor, and the other end of the third capacitor is connected with the other end of the sixth resistor.
According to some embodiments of the invention, the vibration switch is a spring-type vibration-sensing trigger switch.
According to a second aspect of the present invention, an electric shaver comprises: the control circuit of any embodiment of the first aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention will be further described with reference to the following drawings and examples, in which:
fig. 1 is a block diagram of a control circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a control circuit according to an embodiment of the present invention.
Reference numerals:
the system comprises a main control module 100, a switch driving module 200, a battery 300, a switch module 400, a motor driving module 500 and a sampling module 600.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1, an embodiment of the present application provides a control circuit including a main control module 100, a switch driving module 200, a switch module 400, a motor driving module 500, and a sampling module 600. The switch driving module 200 is configured to be connected to the battery 300 and the main control module 100, respectively, the switch driving module 200 is configured to receive a vibration trigger signal and generate a first driving signal according to the vibration trigger signal, and the battery 300 is configured to provide a power supply. The switch module 400 is connected to the switch driving module 200, the battery 300, and the main control module 100, respectively, and the switch module 400 is configured to switch a conducting state according to the first driving signal and the power supply to supply power to the motor driving module 500 and the main control module 100, where the conducting state includes conducting and disconnecting. The motor driving module 500 is connected to the switch module 400 and the main control module 100, respectively. The sampling module 600 is respectively connected to the motor driving module 500 and the main control module 100, and the sampling module 600 is configured to collect an electrical signal of the motor driving module 500. The main control module 100 is configured to generate a second driving signal, the motor driving module 500 is configured to switch a working state according to the power supply and the second driving signal, and the main control module 100 is further configured to update the first driving signal according to the electrical signal collected by the sampling module 600.
In particular, the control circuit provided by the embodiment of the application can be applied to equipment which works through a motor, such as an electric shaver and the like. Hereinafter, the application to an electric shaver will be specifically described as an example. The motor driving module 500 includes components such as a motor, and when the control circuit is applied to the electric shaver, the operating state of the motor driving module 500 is the operating state of the electric shaver. The switch module 400 is disposed on a connection path between the battery 300 and the motor driving module 500 and the main control module 100, when the switch module 400 is turned on, the battery 300 transmits power to the motor driving module 500 and the main control module 100 through the switch module 400, and the motor driving module 500 starts to operate according to the power and a second driving signal generated by the main control module 100, thereby realizing the start of the electric shaver. The switch driving module 200 is configured to control the switch module 400 to be turned on or off. As can be seen, the switch driving module 200 is used to indirectly control the operating state of the motor driving module 500. Therefore, in order to realize a waterproof design of the electric shaver, the switch driving module 200 is set as a vibration triggering module, i.e., the vibration triggering signal is the triggering signal of the switch driving module 200. When the switch driving module 200 receives the vibration trigger signal, the switch driving module 200 generates a first driving signal capable of controlling the switch module 400 to be turned on, so as to supply power to the main control module 100 and the motor driving module 500, and a second driving signal of the main control module controls the motor driving module 500 to start.
It is understood that the sampling module 600 is used for sampling an electrical signal of the motor driving module 500 during operation, and the electrical signal includes at least one of a current signal and a voltage signal. The sampling module 600 sends the electrical signal to the main control module 100, and the main control module 100 determines whether the motor driving module 500 is idle according to the electrical signal, that is, determines whether the electric shaver is not in contact with a human body. When the main control module 100 determines that the motor driving module 500 is idle according to the electrical signal, and/or the idle time duration is greater than the preset time threshold, in order to reduce the power consumption of the battery 300, the main control module 100 controls the switch driving module 200 to generate a first driving signal for turning off the switch module 400 through a connection port with the switch driving module 200, so as to turn off a connection path between the battery 300 and the motor driving module 500 and the main control module 100, and further turn off the power supply for the main control module 100 and the motor driving module 500 to stop working, that is, control the electric shaver to stop working.
The control circuit provided in the embodiment of the present application uses the vibration trigger signal as the trigger signal of the switch driving module 200, that is, the switch driving module 200 is configured to generate the first driving signal according to the vibration trigger signal. When the switch module 400 is turned on according to the first driving signal and the power, the power provided by the battery 300 is transmitted to the main control module 100 and the motor driving module 500 through the switch module 400, and the motor driving module 500 starts to operate according to the power and the second driving signal provided by the main control module 100. Therefore, the vibration trigger signal is used as the indirect control signal of the working state of the starting and motor driving module 500 in the embodiment of the application, and the key is not needed, so that the control circuit provided in the embodiment of the application can not only carry out better waterproof design, but also avoid the standby energy consumption phenomenon which occurs when the fingerprint or touch induction switching on and off mode is used for control. And the main control module 100 is further configured to update the first driving signal according to the electrical signal, and when the main control module 100 determines that the motor driving module 500 is unloaded according to the electrical signal and/or the idle time duration is greater than the preset time threshold, the main control module 100 updates the first driving signal that turns on the switch module 400 to the first driving signal that turns off the switch module 400, so as to control automatic shutdown and power off and stop the main control module 100 and the motor driving module 500, thereby implementing zero power consumption during shutdown. Therefore, the control circuit provided by the embodiment of the application can also reduce the power consumption of the battery 300, thereby prolonging the service life of the battery 300.
Referring to fig. 1 and 2, in some embodiments, the switch driving module 200 includes a shaking switch SW1, a first resistor R1, a first transistor Q1, a second resistor R2, and a first capacitor C1. The vibration switch SW1 is used for connecting with the battery 300, and the vibration switch SW1 is used for receiving a vibration trigger signal and generating a sub-signal according to the vibration trigger signal so as to provide a signal for the switch module 400 to be instantly conducted to the main control module 100 and the motor driving module 500 for transmitting power. One end of the first resistor R1 is connected to the vibration switch SW 1. The base of the first triode Q1 is connected to the other end of the first resistor R1, the emitter of the first triode Q1 is grounded, and the collector of the first triode Q1 is connected to the switching module 400, wherein the first triode Q1 is configured to generate the first driving signal according to the sub-signal. One end of the second resistor R2 is connected to the base of the first transistor Q1, and the other end of the second resistor R2 is connected to the first port PWR of the main control module 100. One end of the first capacitor C1 is connected to the base of the first transistor Q1, and the other end of the first capacitor C1 is grounded.
It will be appreciated that shock switch SW1 is a shock sensor and shock switch SW1 is a spring-type shock sensitive trigger switch. The vibration switch SW1 is used for sensing the magnitude of vibration force (i.e. vibration trigger signal) and transmitting the sensing result (i.e. sub-signal) generated according to the magnitude of vibration force to the circuit device connected with the vibration switch SW, thereby providing the trigger signal for the on-off of the circuit. When the shaking speed of the shaking switch SW1 is greater than or equal to the predetermined centrifugal force, the conductive pin inside the shaking switch SW1 is instantly turned on. At this time, the power generated by the battery 300 is transmitted to the base of the first transistor Q1 through the vibrating switch SW1 and the biased first resistor R1 to drive the first transistor Q1 to be turned on. The switch module 400 is turned on following the conduction of the first transistor Q1, so that the power is transmitted to the main control module 100 and the motor driving module 500 through the switch module 400, and at this time, the motor driving module 500 starts to operate according to the power and the second driving signal provided by the main control module 100.
When the main control module 100 determines that the motor driving module 500 is idle and/or the idle time is longer than the preset time threshold according to the electrical signal generated by the sampling module 600, the first port PWR of the main control module 100 outputs a low voltage signal, and the low voltage signal is transmitted to the base of the first triode Q1 through the second resistor R2 to drive the first triode Q1 to be turned off. The switching module 400 is turned off following the turn-off of the first transistor Q1, and at this time, the main control module 100 and the motor driving module 500 are powered off, and enter a shutdown state to stop.
Secondly, in order to ensure that the main control module 100 and the motor driving module 500 still maintain the power supply and the working state continuously after the shaking switch SW1 is stopped, the main control module 100 outputs a high-level driving signal through the first port PWR during the period when the shaking switch SW1 drives the switch module 400 to be instantly turned on and the power is turned on, so as to maintain the on state of the switch module 400 and maintain the continuous power supply of the battery 300 to the motor driving module 500.
In the embodiment of the present application, the first transistor Q1 may be selected as an NPN transistor. The battery 300 may be two dry batteries or a single 3.7V lithium battery, and provides a voltage for the main control module 100 to work normally. The vibration switch SW1 is normally open, and the inner ball bearing is provided with a spring damper, i.e. when the speed of swinging the vibration switch SW1 is larger than or equal to a preset centrifugal force, the ball bearing can be contacted and conducted with the inner electrode elastic sheet, thereby preventing the false triggering and conduction caused by the normal movement or inclined placement of the electric shaver during shaving. It will be appreciated that when the external force is removed, the off state of the circuit device connected to the shock switch SW1 is automatically restored. Therefore, the vibration switch SW1 can be a spring type vibration induction trigger switch of types such as SW-18010P with current resistance not lower than 2mA, the first triode Q1 can be an NPN type triode packaged by patches SOT23 of 3904, 8050, 9014 and the like, the first resistor R1 and the second resistor R2 can be resistors with resistance values of any value of 4.7K Ω to 10K Ω, and the first capacitor C1 can be a patch capacitor of 100 nF.
In some embodiments, the switch module 400 includes a second MOS transistor Q2, a third resistor R3, a fourth resistor R4, and a second capacitor C2, wherein a source of the second MOS transistor Q2 is connected to the battery 300, and a drain of the second MOS transistor Q2 is connected to the motor driving module 500. One end of the third resistor R3 is connected to the battery 300, and the other end of the third resistor R3 is connected to the gate of the second MOS transistor Q2. One end of the fourth resistor R4 is connected to the gate of the second MOS transistor Q2, and the other end of the fourth resistor R4 is connected to the collector of the first transistor Q1. One end of the second capacitor C2 is connected to the drain of the second MOS transistor Q2, and the other end of the second capacitor C2 is grounded. The second MOS transistor Q2 is configured to switch an on state according to the first driving signal and the power supply.
Specifically, when the first driving signal is a signal generated by turning on the first transistor Q1, the gate of the second MOS transistor Q2 is connected to ground through the fourth resistor R4 and the first transistor Q1. At this time, the second MOS transistor Q2 is turned on, the power provided by the battery 300 is transmitted to the main control module 100 and the motor driving module 500 through the second MOS transistor Q2, and the motor driving module 500 starts to operate according to the power and the second driving signal provided by the main control module 100. When the first driving signal is a signal generated by turning off the first transistor Q1, the second MOS transistor Q2 is turned off, and the main control module 100 and the motor driving module 500 cannot be started because they cannot obtain power, and are in a power-off state at this time.
In the embodiment of the present application, the second MOS transistor Q2 is a PMOS transistor, for example, a P-channel MOSFET packaged by a chip SOT23 having a current resistance of not less than 4.4A and a withstand voltage between a source and a drain of 30V, NCE3401 is selected. The third resistor R3 can be a resistor with a resistance value of any value of 100K omega-200K omega, the fourth resistor R4 can be a resistor with a resistance value of any value of 4.7K omega-10K omega, and the second capacitor C2 is a patch capacitor with a voltage resistance of 16V and a frequency of 10 muF.
In some embodiments, the motor driving module 500 includes a motor M, a third MOS transistor Q3, a diode D1, and a fifth resistor R5. One end of the motor M is connected to the drain of the second MOS transistor Q2. The drain of the third MOS transistor Q3 is connected to the other end of the motor M, the gate of the third MOS transistor Q3 is connected to the second port MT of the main control module 100, and the source of the third MOS transistor Q3 is connected to the sampling module 600. The cathode of the diode D1 is connected to the anode of the motor M, and the anode of the diode D1 is connected to the cathode of the motor M. One end of the fifth resistor R5 is connected to the gate of the third MOS transistor Q3, and the other end of the fifth resistor R5 is grounded. The motor M is used for switching the working state according to the power supply and the second driving signal.
Specifically, the motor M, the third MOS transistor Q3, and the sampling module 600 are connected in series in sequence. The operating state of the motor driving module 500 is the operating state of the motor M, so that when the second MOS transistor Q2 is turned on, the power supply supplies power to the motor M and the main control module 100 through the second MOS transistor Q2, the main control module 100 outputs a second driving signal with a high level through the second port MT after being powered on, at this time, the third MOS transistor Q3 is turned on, and the motor M starts to operate, that is, the electric shaver starts to operate. When the second MOS transistor Q2 is turned off, the motor M and the main control module 100 both have no power supply signal, and at this time, the motor M is in a non-working state, that is, the electric shaver is in a shutdown state.
In the embodiment of the present application, the third MOS transistor Q3 is an NMOS transistor, for example, an N-channel MOS transistor packaged by a patch SOT23 having a current resistance of not less than 5A, a withstand voltage between a drain and a source of 30V, A03400, an AP2306, and the like is selected. When the battery 300 selects two dry batteries, the motor M can select a direct current brush motor with the rated working voltage of 3.0V, the rated working current of 220mA and the like; when the battery 300 is a single 3.74V lithium battery, the motor M can be a DC brush motor with a rated working voltage of 3.7V and a rated working current of 250 mA-300 mA. The diode D1 can be Schottky diode D1 of SS24, SS34 and the like, and the fifth resistor R5 can be any resistor with the resistance value of 10-100K omega.
In some embodiments, the sampling module 600 includes a sixth resistor R6, a seventh resistor R7, and a third capacitor C3. One end of the sixth resistor R6 is connected to the source of the third MOS transistor Q3, and the other end of the sixth resistor R6 is grounded. One end of the seventh resistor R7 is connected to one end of the sixth resistor R6, the other end of the seventh resistor R7 is connected to the third port AD of the main control module 100, one end of the third capacitor C3 is connected to the other end of the seventh resistor R7, and the other end of the third capacitor C3 is connected to the other end of the sixth resistor R6.
Specifically, the sixth resistor R6 is connected in series to the connection path between the third MOS transistor Q3 and the ground terminal, and therefore the sixth resistor R6 is a sampling resistor. The seventh resistor R7 and the third capacitor C3 are configured to filter voltage signals at two ends of the sixth resistor R6, and the third port AD of the main control module 100 obtains the voltage at two ends of the filtered sixth resistor R6 through the third capacitor C3, so as to determine whether the motor driving module 500 has no load and/or determine whether a time duration of the no load is greater than a preset time threshold. When it is determined that the motor driving module 500 is idle and/or that the idle time duration is greater than the preset time threshold, the second port MT of the main control module 100 outputs a second driving signal with a low level to turn off the third MOS transistor Q3 to control the motor M to stop working, and simultaneously, the first port PWR of the main control module 100 outputs a driving signal with a low level to control the first transistor Q1 to turn off, that is, change the signal type of the first driving signal, so as to control the second MOS transistor Q2 to turn off, so that the main control module 100 and the motor driving module 500 are both in a power-off state.
It is understood that the operating current when the motor M is idle is smaller than the operating current when the electric shaver is in contact with the human body, and therefore a sampling threshold value is set which is smaller than the sampling voltage when the electric shaver is in contact with the human body. When the sampling voltage of the sixth resistor R6 is less than the sampling threshold, the motor is considered to be in an idle state, that is, the electric shaver is not in contact with a human body; when the sampling voltage of the sixth resistor R6 is greater than the sampling threshold, the electric shaver is considered to be in contact with a human body; when the sampling voltage of the sixth resistor R6 is less than the sampling threshold and the duration is greater than the preset time threshold, it is determined that the electric shaver is not in contact with a human body for a long time, and at this time, in order to reduce the power consumption of the battery 300, the first port PWR of the main control module 100 controls the second MOS transistor Q2 to turn off the power supply to the main control module 100 and the motor M, and the power consumption is zero.
It can be understood that when the electric shaver is locked by hair, impurities and the like in the electric shaver and normally runs, the motor M is locked, and the working current of the motor M in the locked state reaches the maximum current value. Therefore, it can also be determined whether the motor M is locked by the sixth resistor R6, when it is determined that the motor M is locked and the locked duration is longer than 2 seconds, the second port MT of the main control module 100 outputs the second driving signal with a low level to control the motor M to stop working, and the first port PWR of the main control module 100 outputs the first driving signal with a low level to control the second MOS transistor Q2 to turn off, so that the motor M and the main control module 100 both return to the power-off shutdown state.
It can be understood that the main control module 100 at least includes an AD detection port and two I/O ports, the operating voltage range of the main control module 100 is 2.2V to 5.5V, the ROM space of the main control module 100 is not lower than 1K, and the main control module 100 may be a single chip microcomputer packaged by SOP8 pins of MDT10F272, HT66F002, and the like. The sixth resistor R6 can be a chip precision resistor with the resistance value of 0.01 omega and the precision of +/-1 percent and the packaging of 1210 percent, the seventh resistor R7 can be a resistor with the resistance value of any one of 1K omega-2.2K omega, and the third capacitor C3 can be a chip capacitor with the resistance value of 100 nF.
Embodiments of the present application also provide an electric shaver including the control circuit as described in any of the above embodiments.
It can be seen that, the contents of the foregoing control circuit embodiments are all applicable to the present electric shaver embodiment, the functions implemented by the present electric shaver embodiment are the same as those of the foregoing control circuit embodiment, and the beneficial effects achieved by the present electric shaver embodiment are also the same as those achieved by the foregoing control circuit embodiment.
It is understood that the electric shaver refers to an assembly capable of shaving, the electric shaver includes a stationary blade, a movable blade, a fixing member, and the like, and the specific structure of the electric shaver may be adapted according to the actual application, and the embodiment of the present application is not particularly limited.
The control circuit and the electric shaver provided by the embodiment of the application realize swinging starting up work, intelligent control of automatic shutdown when the electric shaver is not in contact with a human body, and shutdown has zero power consumption. Therefore, the control circuit and the electric shaver provided by the embodiment of the application avoid the problem of standby power consumption existing in startup modes such as touch or fingerprint identification and the like, and the defect of being not beneficial to waterproof design caused by a key switch, and prolong the service life of the battery of the electric shaver.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (7)
1. A control circuit, comprising:
a main control module;
the switch driving module is used for being connected with the battery and the main control module respectively, receiving a vibration trigger signal and generating a first driving signal according to the vibration trigger signal; wherein the battery is used for providing power supply;
the switch module is respectively connected with the switch driving module, the battery and the main control module;
the motor driving module is respectively connected with the switch module and the main control module;
the sampling module is respectively connected with the motor driving module and the main control module and is used for collecting electric signals of the motor driving module;
the switch module is used for switching a conduction state according to the first driving signal and the power supply so as to supply power to the main control module and the motor driving module; wherein the on state comprises on and off; the main control module is used for generating a second driving signal, and the motor driving module is used for switching the working state according to the power supply and the second driving signal; the main control module is also used for updating the first driving signal according to the electric signal collected by the sampling module.
2. The control circuit of claim 1, wherein the switch driver module comprises:
the vibration switch is used for being connected with the battery, receiving the vibration trigger signal and generating a sub-signal according to the vibration trigger signal;
one end of the first resistor is connected with the vibration switch;
a base electrode of the first triode is connected with the other end of the first resistor, an emitting electrode of the first triode is grounded, and a collecting electrode of the first triode is connected with the switch module; the first triode is used for generating the first driving signal according to the sub-signal;
one end of the second resistor is connected with the base electrode of the first triode, and the other end of the second resistor is connected with the first port of the main control module;
and one end of the first capacitor is connected with the base electrode of the first triode, and the other end of the first capacitor is grounded.
3. The control circuit of claim 2, wherein the switch module comprises:
the source electrode of the second MOS tube is connected with the battery, and the drain electrode of the second MOS tube is connected with the motor driving module;
one end of the third resistor is connected with the battery, and the other end of the third resistor is connected with the grid electrode of the second MOS tube;
one end of the fourth resistor is connected with the grid electrode of the second MOS transistor, and the other end of the fourth resistor is connected with the collector electrode of the first triode;
one end of the second capacitor is connected with the drain electrode of the second MOS tube, and the other end of the second capacitor is grounded;
wherein the second MOS transistor is used for switching the conducting state according to the first driving signal and the power supply.
4. The control circuit of claim 3, wherein the motor drive module comprises:
the positive electrode of the motor is connected with the drain electrode of the second MOS tube;
a drain electrode of the third MOS transistor is connected with a negative electrode of the motor, a gate electrode of the third MOS transistor is connected with the second port of the main control module, and a source electrode of the third MOS transistor is connected with the sampling module;
the cathode of the diode is connected with the anode of the motor, and the anode of the diode is connected with the cathode of the motor;
one end of the fifth resistor is connected with the grid electrode of the third MOS tube, and the other end of the fifth resistor is grounded;
wherein the motor is used for switching the working state according to the power supply and the second driving signal.
5. The control circuit of claim 4, wherein the sampling module comprises:
one end of the sixth resistor is connected with the source electrode of the third MOS tube, and the other end of the sixth resistor is grounded;
one end of the seventh resistor is connected with one end of the sixth resistor, and the other end of the seventh resistor is connected with the third port of the main control module;
and one end of the third capacitor is connected with the other end of the seventh resistor, and the other end of the third capacitor is connected with the other end of the sixth resistor.
6. The control circuit of any one of claims 2 to 5, wherein the shock switch is a spring-type shock-sensitive trigger switch.
7. An electric shaver, characterized by comprising: a control circuit as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446511.0U CN217292434U (en) | 2021-12-31 | 2021-12-31 | Control circuit and electric shaver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446511.0U CN217292434U (en) | 2021-12-31 | 2021-12-31 | Control circuit and electric shaver |
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| Publication Number | Publication Date |
|---|---|
| CN217292434U true CN217292434U (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123446511.0U Active CN217292434U (en) | 2021-12-31 | 2021-12-31 | Control circuit and electric shaver |
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| Country | Link |
|---|---|
| CN (1) | CN217292434U (en) |
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