CN213252582U - Portable electronic pulse massage instrument system - Google Patents

Abstract

The utility model discloses a portable electronic pulse massager system, which comprises a main control MCU, a charging circuit, a battery protection circuit, a battery detection circuit, a filter circuit, a booster circuit and a massage pulse control circuit, wherein the charging circuit, the battery protection circuit, the battery detection circuit, the filter circuit, the booster circuit and the massage pulse control circuit are electrically connected with the main control MCU; according to the embodiment of the application, the isolation and overcurrent monitoring characteristics of the battery protection chip are utilized, so that the effect of avoiding current consumption is achieved, the battery can be protected, and the MCU cannot be influenced in the whole process; when the short circuit state is recovered to be normal, the whole circuit is recovered again without carrying out redundant operations such as restarting and the like, so that the user experience is greatly enhanced. The embodiment of the application also utilizes two PWM of the main control MCU to realize the output control of two pole pieces, thereby generating controllable and adjustable massage feeling on the skin of the human body, and the massage strength and frequency are determined by the current conducted to the skin by the massage pole pieces, namely, the massage strength and frequency are adjustable, and the massage is suitable for the skin types and the skin thicknesses of different crowds.

Description

Portable electronic pulse massage instrument system

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a portable electronic pulse massage appearance system.

Background

In daily work, people always feel tired and sore after driving for a long time and going on a business trip or meeting for a long time, but the tired and nervous feeling cannot be eliminated in time due to the limitation of time and places, and the physical health is influenced for a long time. Under such circumstances, the portable electronic pulse massage machine is very suitable as a tool for relieving fatigue and pressure of people. The portable electronic pulse massager has the advantages of safety, reliability, small size, convenience, portability and no need of secondary charging for a long time, and the portable electronic pulse massager adopts any self-set electronic pulse mode to act on skin, generates a pressing feeling similar to massage and can relieve fatigue under the condition of completely not delaying work.

However, the massage apparatus on the market is expensive and inconvenient to carry, and can be used only by connecting with a connecting wire, and has certain restrictions on the functions of portability, comfortable pressing, timely fatigue relief and the like which are really needed by people, so that inconvenience is brought to the use of consumers.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

For the above reasons, the applicant proposed a portable electronic pulse massage system.

SUMMERY OF THE UTILITY MODEL

In order to meet the above requirements, an object of the present invention is to provide a portable electronic pulse massage system.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a portable electronic pulse massager system comprises a main control MCU, a charging circuit, a battery protection circuit, a battery detection circuit, a filter circuit, a booster circuit and a massage pulse control circuit, wherein the charging circuit, the battery protection circuit, the battery detection circuit, the filter circuit, the booster circuit and the massage pulse control circuit are electrically connected with the main control MCU; the massage pulse control circuit is provided with a first input end and a second input end, the first input end and the second input end are respectively connected with two PWM ports of the main control MCU, the first input end and the second input end are respectively connected with a first primary triode and a second primary triode, the first primary triode is connected with a first secondary triode and a third primary triode, the second primary triode is connected with a second secondary triode and a fourth secondary triode, an emitting electrode of the first primary triode is connected with a first massage electrode patch, an emitting electrode of the third primary triode is connected with a second massage electrode patch, an emitting electrode of the second secondary triode is connected with the first massage electrode patch, and an emitting electrode of the fourth secondary triode is connected with the second massage electrode patch.

The charging circuit comprises a charging chip, a battery socket connected with the charging chip, a battery installed on the battery socket and a USB charging interface for charging.

The technical scheme is that the battery protection circuit comprises a battery protection chip, and a power supply voltage pin of the battery protection chip is connected with a battery anode pin of the charging chip.

The battery detection circuit comprises a PNP type triode connected with a battery positive pin of a charging chip, an enabling port connected with a base electrode of the PNP type triode, a voltage reading port connected with a collector electrode of the PNP type triode, and a controllable precise voltage stabilization source arranged between the PNP type triode and the voltage reading port; the enabling port and the voltage reading port are connected with the main control MCU.

The technical scheme is that the filter circuit is a pi-type LC filter circuit, the input end of the filter circuit is connected with the charging circuit, and the output end of the filter circuit is connected with the booster circuit.

The technical scheme is that the input end of the booster circuit is connected with the filter circuit, the output end of the booster circuit is used for outputting boosted voltage, and an inductor and a patch Schottky diode are sequentially connected in series between the input end and the output end of the booster circuit.

The technical scheme is that a node between the inductor and the patch Schottky diode is connected with an N-type MOS tube connected with a master control MCU, a grounded electrolytic capacitor is connected between the inductor and the input end of the booster circuit, a node between the patch Schottky diode and the output end of the booster circuit is also connected with a grounded electrolytic capacitor, and the output end of the booster circuit is also connected with a ground resistor.

The further technical scheme is that the model of the master control MCU is SN8F 570212S.

The further technical scheme is that the main control MCU is connected with an operation indicator lamp.

The further technical scheme is that a power input end of the master control MCU is connected with a voltage division adjusting circuit, the master control MCU is connected with a switch, and the voltage division adjusting circuit is used for controlling massage frequency.

Compared with the prior art, the beneficial effects of the utility model reside in that:

in the embodiment of the application, the isolation and overcurrent monitoring characteristics of the battery protection chip are utilized to isolate the analog GND and the digital GND from each other, so that the voltage of the analog GND is timely increased to VBAT during short circuit, the effect of avoiding current consumption is achieved, the battery can be protected, and the MCU is not influenced in the whole process; when the short circuit state is recovered to be normal, the whole circuit is recovered again without carrying out redundant operations such as restarting and the like, so that the user experience is greatly enhanced.

And (II) the two paths of PWM of the main control MCU are utilized in the system to realize the output control of the two paths of pole pieces, so that controllable and adjustable massage feeling is generated on the skin of a human body, and the massage strength and frequency are determined by the current conducted to the skin by the massage pole pieces, namely, the massage strength and frequency are adjustable and are suitable for the skin types and the skin thicknesses of different people.

And thirdly, the system detects the electric quantity of the battery by using a controllable precise voltage stabilization source generating a fixed pressure difference, so that the battery monitoring is changed into a reference system, the detected value is a fixed value, and the reference value acquired by the ADC is a variable value, thereby directly using VBAT to supply power for the main control MCU, and achieving the purposes of saving development resources and reducing cost.

And (IV) the system increases product standardization, greatly shortens the development period and reduces the development cost.

The invention is further described with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic view of a massage pulse control circuit of a portable electronic pulse massage system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a charging circuit of a portable electronic pulse massage system according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a battery protection circuit of a portable electronic pulse massage system according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a current detection circuit of a portable electronic pulse massage system according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a filter circuit of a portable electronic pulse massage system according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a booster circuit of the portable electronic pulse massage system provided by the present invention;

fig. 7 is a schematic diagram of a main control MCU of the portable electronic pulse massage system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above should not be understood to 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. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Referring to fig. 1 to 7, fig. 1 is a schematic diagram of a massage pulse control circuit of a portable electronic pulse massage apparatus system according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a charging circuit of a portable electronic pulse massage system according to an embodiment of the present invention, FIG. 3 is a schematic diagram of a battery protection circuit of a portable electronic pulse massage system according to an embodiment of the present invention, FIG. 4 is a schematic diagram of a current detection circuit of a portable electronic pulse massage system according to an embodiment of the present invention, FIG. 5 is a schematic diagram of a filter circuit of a portable electronic pulse massage system according to an embodiment of the present invention, FIG. 6 is a schematic diagram of a booster circuit of the portable electronic pulse massage system according to the present invention, fig. 7 is a schematic view of a main control MCU of the portable electronic pulse massage system of the present invention. The portable electronic pulse massager system comprises a main control MCU, and a charging circuit, a battery protection circuit, a battery detection circuit, a filter circuit, a booster circuit and a massage pulse control circuit which are electrically connected with the main control MCU;

as shown in fig. 1, the massage pulse control circuit has a first input terminal PWM _ a and a second input terminal PWM _ B, the first input terminal PWM _ a and the second input terminal PWM _ B are respectively connected with two PWM ports of the main control MCU, the first input terminal PWM _ a and the second input terminal PWM _ B are respectively connected with a first triode Q4 and a second triode Q8, the first triode Q4 is connected with a first triode Q3 and a third triode Q6, the second triode Q8 is connected with a second triode Q5 and a fourth triode Q7, the emitter of the first triode Q4 is connected with a first massage electrode patch (i.e. the massage electrode patch a), the emitter of the third triode Q6 is connected with a second massage electrode patch (i.e. the massage electrode patch B), the emitter of the second triode Q5 is connected with the first massage electrode patch, and the emitting electrode of the fourth triode Q7 is connected with the second massage electrode patch.

Specifically, the massage pulse control circuit is controlled by the IO port "PWM _ a" and "PWM _ B" of the main control MCU, and when "PWM _ a" and "PWM _ B" are both high level or low level, there is no voltage difference between the massage electrode patch a and the massage electrode patch B, that is, no current flows; when "PWM _ a" is high and "PWM _ B" is low, the first triode Q4 is turned on and the second triode Q8 is turned off, resulting in the third triode Q6 being turned on, the first triode Q3 being turned off, and the second triode Q5 being turned on, the fourth triode Q7 being turned off, with current flowing from VCC to the second triode Q5, the massage electrode patch B, the massage electrode patch a to the third triode Q6 to analog GND;

when "PWM _ a" is low and "PWM _ B" is high, the first triode Q4 is turned off and triode Q8 is turned on, resulting in the third triode Q6 being turned off, the first triode Q3 being turned on, the second triode Q5 being turned off, the fourth triode Q7 being turned on, with current flowing from VCC to the first triode Q3, the massage electrode patch a, the massage electrode patch B, the fourth triode Q7 to analog GND; the magnitude of the current is determined by the magnitude of VCC and the resistance of human skin.

According to the state of the PWM port, in the embodiment, as long as the duration time of the high level and the low level and the level overturning moment of the PWM _ A and the PWM _ B are controlled, the current flow direction can be changed, the current flow direction changes respectively from the massage electrode patch A to the massage electrode patch B, from the massage electrode patch B to the massage electrode patch A, and no current exists, the time and the direction of the current change are reasonably controlled, and different massage effects are simulated on the skin of a human body.

As shown in fig. 2, the charging circuit includes a charging chip U1, a battery socket connected to the charging chip U1, a battery mounted in the battery socket, and a USB charging interface for charging. The battery may be represented as BAT-BAT1, and the battery may be a lithium battery. The USB charging interface is a dashed line frame part shown in the figure, and specifically, when the USB charging interface is connected to a 5V input, under the condition that a battery is not protected, a 5V signal is divided by resistors R4 and R9, and then is detected by an IO port '5V _ INT' of the MCU; in the charging circuit diagram of the present embodiment, the diode D1 is used to prevent the charging plug from being connected reversely, and since D1 is in the main circuit of power supply, the conduction voltage drop of D1 should be small.

The charging chip TC4056 is controlled by an IO port "CE" and "I _ select" of the main control MCU and an NTC resistor R8; the NTC resistor R8 monitors the temperature of the battery, when the temperature of the battery rises, the resistance value of R8 is reduced, and when the resistance value of the battery is reduced to a certain degree, the charging chip TC4056 is directly turned off, so that the battery is protected; when the massager is in a state of charging and using, the IO port 'I _ select' of the main control MCU is set to be low, so that the ground resistance of the charging chip TC4056 is changed, the charging current is increased, and the situations of over-slow battery charging and insufficient load power supply are avoided; the IO port "CE" of the main control MCU can also actively control the on or off of the charging chip under specific logic, thereby ensuring the reliability of the circuit.

As shown in fig. 3, the battery protection circuit includes a battery protection chip U2, and a power supply voltage pin VDD of the battery protection chip U2 is connected to a battery positive electrode pin BAT of the charging chip U1. The battery protection chip XZ4211 effectively isolates the digital GND and the analog GND of the whole circuit; the master control MCU, the battery detection circuit and the 5V input signal detection and battery cathode share the analog GND; the filter circuit, the booster circuit, the massage pulse control circuit and the charging circuit share the digital GND; under normal conditions, the digital GND and the analog GND are internally conducted through the battery protection chip XZ 4211; under some special conditions, the massage patch or other parts of the circuit are short-circuited, the current is suddenly increased to reach the threshold value of the protection chip, and the protection chip XZ4211 can instantly lift the analog GND, so that no voltage difference exists between the analog GND and the battery voltage VBAT, and the current is limited, and the circuit is protected; meanwhile, the digital GND and the analog GND are also isolated by the protection chip XZ4211, so that the main control MCU can still normally work and is not interfered under the condition; when the current of the circuit is recovered to a normal value, the circuit is recovered to be normal without causing the state change of the singlechip.

As shown in fig. 4, the battery detection circuit includes a PNP transistor Q1 connected to a battery positive terminal BAT of the charging chip U1, an enable port EN _ AD connected to a base of the PNP transistor Q1, a voltage reading port BAT _ AD connected to a collector of the PNP transistor Q1, and a controllable precision voltage regulator TL431 disposed between the PNP transistor Q1 and the voltage reading port BAT _ AD; the enabling port EN _ AD and the voltage reading port BAT _ AD are connected with the master control MCU.

When the IO port 'EN _ AD' of the master control MCU is at a low level, the battery power acquisition is enabled, so that the battery power acquisition can be prevented from continuously consuming the battery power; when the battery detection circuit is enabled, the TL431 generates a reference voltage of 2.5V, and the supply voltage VDD of the main control MCU is identical to the current voltage VBAT of the battery, and when the IO port "BAT _ AD" of the single chip microcomputer reads the value of the reference voltage of 2.5V, it is affected by the supply voltage VDD, i.e., the battery voltage VBAT; when the voltage value of VBAT is lower, the value read by BAT _ AD is larger, and when the voltage value of VBAT is higher, the value read by BAT _ AD is lower, so that the voltage value change of VBAT is obtained, and the current electric quantity of the battery is determined.

As shown in fig. 5, the filter circuit is a pi-type LC filter circuit, and an input terminal of the filter circuit is connected to the charging circuit. The booster circuit and the massage pulse control circuit which are easy to generate high-frequency components can be isolated from an external circuit, so that the functions of battery electric quantity detection, battery charging, battery protection and the like are prevented from being interfered.

As shown in fig. 6, input VBAT-1 of boost circuit is connected with filter circuit, boost circuit's output VCC is used for outputting the voltage after stepping up, it has inductance L1, paster schottky diode D2 to establish ties in proper order between boost circuit's input VBAT-1 and the output VCC, the node between inductance L1 and paster schottky diode D2 is connected with N type MOS pipe Q2 of being connected with main control MCU, be connected with grounded electrolytic capacitor E3 between inductance L1 and boost circuit's input VBAT-1, the node between paster schottky diode D2 and boost circuit output VCC also is connected with grounded electrolytic capacitor E2, boost circuit's output VCC still is connected with ground resistance R12.

Specifically, the on-state of the N-type MOS transistor Q2 is controlled by the duty ratio and frequency of the IO port "PWM _ Boost" of the main control MCU, and the voltage VCC is increased by the energy storage effect of the inductor L1, wherein the voltage value of the VCC can be dynamically adjusted by the duty ratio of the "PWM _ Boost".

As shown in fig. 7, the model of master control MCU is SN8F570212S, wherein, master control MCU is connected with the operation pilot lamp, master control MCU's power input end is connected with partial pressure regulating circuit, master control MCU is connected with switch SW1, partial pressure regulating circuit is used for controlling massage frequency, and the switch can be used to control system's work. Wherein, the partial pressure regulating circuit includes resistance R and slip rheostat VR1, divides voltage by resistance R8 and VR1 and adjusts the duty cycle and the frequency of IO mouth "PWM _ Boost" of master control MCU to adjust VCC to suitable pressure value, and then control massage pulse's average current, in order to realize the control to the massage appearance, bring the facility for user's use.

In summary, in the embodiment of the application, the isolation and overcurrent monitoring characteristics of the battery protection chip are utilized to isolate the analog GND and the digital GND from each other, so that the voltage of the analog GND is timely raised to VBAT during short circuit, the effect of avoiding current consumption is achieved, the battery can be protected, and the MCU is not affected in the whole process; when the short circuit state is recovered to be normal, the whole circuit is recovered again without carrying out redundant operations such as restarting and the like, so that the user experience is greatly enhanced. The two paths of PWM of the main control MCU are utilized to realize the output control of the two paths of pole pieces, so that controllable and adjustable massage feeling is generated on the skin of a human body, the massage strength and frequency are determined by the current conducted to the skin by the massage pole pieces, namely, the massage strength and frequency are adjustable, and the massage system is suitable for the skin types and the skin thicknesses of different people. The system detects the electric quantity of the battery by using the controllable precise voltage-stabilizing source generating the fixed pressure difference, so that the battery monitoring is changed into a reference system, the detected value is a fixed value, and the reference value acquired by the ADC is a variable value, thereby directly using VBAT to supply power for the main control MCU, and achieving the purposes of saving development resources and reducing cost. The system increases product standardization, greatly shortens development period and reduces development cost.

Various other modifications and changes can be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the protection scope of the present invention.

Claims (10)

1. A portable electronic pulse massage instrument system is characterized by comprising a main control MCU, a charging circuit, a battery protection circuit, a battery detection circuit, a filter circuit, a booster circuit and a massage pulse control circuit, wherein the charging circuit, the battery protection circuit, the battery detection circuit, the filter circuit, the booster circuit and the massage pulse control circuit are electrically connected with the main control MCU; the massage pulse control circuit is provided with a first input end and a second input end, the first input end and the second input end are respectively connected with two PWM ports of the main control MCU, the first input end and the second input end are respectively connected with a first primary triode and a second primary triode, the first primary triode is connected with a first secondary triode and a third primary triode, the second primary triode is connected with a second secondary triode and a fourth secondary triode, an emitting electrode of the first primary triode is connected with a first massage electrode patch, an emitting electrode of the third primary triode is connected with a second massage electrode patch, an emitting electrode of the second secondary triode is connected with the first massage electrode patch, and an emitting electrode of the fourth secondary triode is connected with the second massage electrode patch.

2. The portable electronic pulse massager system of claim 1 wherein the charging circuit comprises a charging chip, a battery socket connected with the charging chip, a battery mounted on the battery socket, and a USB charging interface for charging.

3. The portable electronic pulse massager system of claim 2 wherein the battery protection circuit comprises a battery protection chip, wherein a power supply voltage pin of the battery protection chip is connected with a battery positive pin of the charging chip.

4. The portable electronic pulse massage apparatus system as recited in claim 3, wherein the battery detection circuit comprises a PNP type triode connected to the positive electrode pin of the battery of the charging chip, an enable port connected to the base of the PNP type triode, a voltage reading port connected to the collector of the PNP type triode, and a controllable precision voltage regulator disposed between the PNP type triode and the voltage reading port; the enabling port and the voltage reading port are connected with the main control MCU.

5. The portable electronic pulse massager system of claim 1, wherein the filter circuit is a pi-type LC filter circuit, an input terminal of the filter circuit is connected to the charging circuit, and an output terminal of the filter circuit is connected to the boosting circuit.

6. The portable electronic pulse massage instrument system as claimed in claim 1, wherein the input end of the boosting circuit is connected to the filter circuit, the output end of the boosting circuit is used for outputting boosted voltage, and an inductor and a patch schottky diode are sequentially connected in series between the input end and the output end of the boosting circuit.

7. The portable electronic pulse massage instrument system as claimed in claim 6, wherein the node between the inductor and the patch schottky diode is connected with an N-type MOS transistor connected with the main control MCU, an electrolytic capacitor connected to ground is connected between the inductor and the input terminal of the booster circuit, an electrolytic capacitor connected to ground is also connected to the node between the patch schottky diode and the output terminal of the booster circuit, and a ground resistor is further connected to the output terminal of the booster circuit.

8. The portable electronic pulse massager system of claim 1 wherein the master MCU is model SN8F 570212S.

9. The portable electronic pulse massager system of claim 8 wherein the master control MCU is connected with an operation indicator light.

10. The portable electronic pulse massager system of claim 8, wherein the power input end of the main control MCU is connected with a voltage division adjusting circuit, the main control MCU is connected with a switch, and the voltage division adjusting circuit is used for controlling massage frequency.

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