CN115192906B - Control circuit of bluetooth massage appearance - Google Patents
Control circuit of bluetooth massage appearance Download PDFInfo
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- CN115192906B CN115192906B CN202210833154.3A CN202210833154A CN115192906B CN 115192906 B CN115192906 B CN 115192906B CN 202210833154 A CN202210833154 A CN 202210833154A CN 115192906 B CN115192906 B CN 115192906B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
- A61N1/36034—Control systems specified by the stimulation parameters
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a control circuit of a Bluetooth massager, which comprises: the mixed signal processor, and a power management circuit, an audio power amplification circuit and an EMS output circuit which are respectively connected with the mixed signal processor; the mixed signal processor exchanges data with the APP or the WeChat applet at the mobile phone terminal, outputs a voice signal to the audio amplification circuit, outputs a detection signal PWM IN to the EMS output circuit after the power is switched on, judges whether the massage instrument is worn according to whether voltage difference exists between corresponding elements, and outputs a modulatable signal PWM1 and two paths of pulse signals PWM2 and PWM3 with different polarities to the EMS output circuit after judging that the massage instrument is worn; the EMS output circuit is switched on and off under a certain switching frequency, and adjusts the amplitude of the pulse signals PWM2 and PWM3 according to the modulatable signal PWM1 to output two paths of microcurrents with opposite polarities. The invention has the advantages of small occupied space, adjustable massage mode and strength, flexible control by using a mobile phone APP/WeChat small program and various functions.
Description
Technical Field
The invention relates to the technical field of massage equipment, in particular to a control circuit of a Bluetooth massage instrument.
Background
The EMS (Electronic Muscle massager) massage has the working principle that micro electric pulse current is sent and directly transmitted to muscles to contract and repeatedly contract and relax the muscles, so that blood circulation is improved, and realistic massage manipulations such as beating, kneading, relaxing, compounding and the like are simulated.
Most of the existing EMS massage equipment outputs fixed pulse current by simple control, cannot be adjusted, and is easy to have acupuncture feeling or other bad massage experiences. Meanwhile, the traditional EMS massage equipment uses a CPU (Central processing Unit) control pulse circuit and a voice chip, and is matched with a Bluetooth module to realize the control function of the mobile phone APP, so that the traditional EMS massage equipment is complex in design, high in cost, space-occupying and not suitable for ultra-small and ultra-portable massage equipment.
Therefore, the technical problem to be solved by the present invention is how to provide a control circuit of a bluetooth massage apparatus, which has adjustable pulse intensity, occupies a small space, and can be controlled by a mobile phone APP/WeChat applet and a remote controller.
Disclosure of Invention
In view of the above, the present invention provides a control circuit of a bluetooth massage apparatus, which has the advantages of small occupied space, adjustable pulse intensity, capability of being controlled by a mobile phone APP/wechat applet, various control modes, and adjustable massage modes.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control circuit of a Bluetooth massager, comprising: the device comprises a mixed signal processor, and a power management circuit, an audio power amplifier circuit and an EMS output circuit which are respectively connected with the mixed signal processor;
the mixed signal processor exchanges data with a mobile phone end APP or a WeChat applet through a Bluetooth BLE protocol;
the mixed signal processor outputs a voice signal to the audio amplification circuit, and the audio power amplification circuit performs power amplification on the voice signal output by the mixed signal processor and broadcasts the voice signal;
the mixed signal processor outputs a detection signal PWM IN to the EMS output circuit after the power supply is switched on, judges whether the massage instrument is worn or not according to whether voltage difference exists between corresponding elements IN the EMS output circuit, and outputs a channel of modulatable signal PWM1 and two channels of pulse signals PWM2 and PWM3 with different polarities to the EMS output circuit after the massage instrument is judged to be worn;
the EMS output circuit is switched on and off under a certain switching frequency, and adjusts the amplitude of pulse signals PWM2 and PWM3 according to a modulatable signal PWM1 to output two paths of microcurrents with opposite polarities.
Further, in the control circuit of the above bluetooth massage apparatus, the mixed signal processor is further configured to switch the polarities of the pulse signals PWM2 and PWM3 according to a preset switching timing.
Further, in the control circuit of the above bluetooth massage apparatus, the EMS output circuit includes a wearing detection sub-circuit, a voltage boosting sub-circuit, and a double-arm pulse sub-circuit;
the wearing detection sub-circuit is used for judging whether the user wears the massage instrument or not according to the detection signal PWM IN output by the mixed signal processor;
the boost sub-circuit is used for receiving the modulatable signal PWM1 and outputting corresponding voltage;
the double-arm pulse sub-circuit is used for receiving the pulse signals PWM2 and PWM3, carrying out corresponding amplitude modulation on the pulse signals PWM2 and PWM3 according to the voltage output by the booster sub-circuit, and then outputting micro-currents with different polarities.
Further, in the control circuit of the above bluetooth massage apparatus, the boost sub-circuit includes: diodes D2, D4 and D5, resistors R22, R24, R25 and R26, a triode Q2, a capacitor C17, an electrolytic capacitor C18 and an inductor L4;
the anode of the diode D2 is connected with the mixed signal processor and receives the modulatable signal PWM1; the cathode of the diode D2 is respectively connected with one end of the resistor R22 and one end of the capacitor C17; the other end of the resistor R22 and the other end of the capacitor C17 are connected with each other and then are respectively connected with one end of a resistor R24 and the base electrode of the triode Q2; the other end of the resistor R24 and the emitting electrode of the triode Q2 are grounded; the collector of the triode Q2 is respectively connected with the anode of the diode D4 and one end of the inductor L4; the other end of the inductor L4 is connected to a power supply VCC; the diode D5 and the diode D4 are connected in series and then are respectively connected with one end of the resistor R25, one end of the resistor R26 and the anode of the capacitor C18; the cathode of the capacitor C18 and the other end of the resistor R26 are both grounded; the other end of the resistor R25 is connected with the double-arm pulse sub-circuit.
Further, in the control circuit of the above bluetooth massage apparatus, the bifilar pulse sub-circuit includes: resistors R27, R28, R29, R30, R31, R34, R35 and R36, triodes Q3, Q4, Q5, Q6, Q7 and Q8;
the emitting electrode of the triode Q3 is respectively connected with the other end of the resistor R25 and one end of the resistor R27; the base electrode of the triode Q3 is connected with one end of the resistor R28; the other end of the resistor R27, the other end of the resistor R28 and one end of the resistor R29 are connected with each other and then are connected to the collector of the triode Q4; the emitting electrode of the triode Q4 is grounded, and the base electrode is connected with the resistor R30 and then connected with the pulse signal PWM2; the base electrode of the triode Q5 is connected with one end of the resistor R31; the collector of the triode Q5 is connected with the wearing detection sub-circuit; an emitting electrode of the triode Q5 is connected with a collecting electrode of the triode Q3, and a connecting node of the emitting electrode and the collecting electrode is used as a first current output end;
an emitting electrode of the triode Q6 is respectively connected with the other end of the resistor R25 and one end of the resistor R34, and a base electrode of the triode Q6 is connected with one end of the resistor R35; the other end of the resistor R34, the other end of the resistor R35 and the other end of the resistor R31 are connected with each other and then are connected to a collector of the triode Q7; the emitting electrode of the triode Q7 is grounded, and the base electrode is connected with the resistor R36 and then connected with the pulse signal PWM3; the base electrode of the triode Q8 is connected with the other end of the resistor R29; the collector of the triode Q8 is respectively connected with the collector of the triode Q5 and the wearing detection sub-circuit; an emitting electrode of the triode Q8 is connected with a collecting electrode of the triode Q6, and a connecting node of the emitting electrode and the collecting electrode is used as a second current output end;
the first current output terminal and the second current output terminal have opposite polarities.
Further, in the control circuit of the above bluetooth massage apparatus, the wearing detection sub-circuit includes: the triode Q9, the resistor R33, the resistor R37, the resistor R38, the capacitor C23, the diode D7 and the diode D8; the collector of the triode Q9 is connected with a detection signal PWM IN, the emitter is grounded, and the base is connected with one end of the resistor R38; the other end of the resistor R38, one end of the resistor R33, one end of the capacitor C23, and the anode of the diode D7 are connected to each other, and are connected to the collector of the transistor Q5 and the collector of the transistor Q8; the diode D8 and the diode D7 are connected in series and then connected with the other end of the resistor R33 and the other end of the capacitor C23 and grounded; one end of the resistor R37 is connected with the collector of the triode Q9, and the other end is connected with a 3.3V power supply.
Further, in the control circuit of the above-mentioned bluetooth massage appearance, still include: a hot compress control circuit; the hot compress control circuit is connected with the mixed signal processor; the mixed signal processor outputs a pulse signal PWM4 to the hot compress control circuit; and the hot compress control circuit heats according to the pulse signal PWM4 and performs constant temperature control.
Further, in the control circuit of the above-mentioned bluetooth massage appearance, still include: 433 a remote control circuit; the 433 remote control circuit is connected with the mixed signal processor;
and the 433 remote control circuit is used for converting 433 signals sent by an external remote controller into level signals and outputting the level signals to the mixed signal processor.
Furthermore, in the control circuit of the above-mentioned bluetooth massage appearance, the core board of mixed signal processor is chinese science blue news AB53 series chip, and the core board is carried with LED pilot lamp circuit and button control circuit.
Further, in the control circuit of the above bluetooth massage apparatus, the switching frequency is 4k.
Through the technical scheme, compared with the prior art, the control circuit of the Bluetooth massager has the following beneficial effects that:
1. the invention can realize the processing and transmission of the Bluetooth signal and the voice signal by only one mixed signal processor without additionally arranging a Bluetooth module and a voice chip, has relatively simple circuit and can save space.
2. The massage instrument can be controlled and data exchanged through the APP or the WeChat applet at the mobile phone terminal, the massage instrument does not need to be taken down in the massage process, the adjustment and control of the massage instrument are realized through changing, and the operation is more convenient.
3. The invention also has the detection function of judging whether the massage instrument is worn in place, and after the massage instrument is judged to be worn, the massage instrument respectively outputs a modulatable signal PWM1 and two paths of pulse signals PWM2 and PWM3 with different polarities so as to provide two paths of proper and comfortable currents, and the output rhythm of the micro-current is controlled at a certain frequency by combining the proper switching frequency, so that the massage manipulation is simulated more vividly, and the bad experiences such as acupuncture feeling and the like are reduced to the maximum extent.
4. The invention can select any one of three control modes of massage instrument body control, mobile phone end control and remote controller control, and the control mode is flexible.
5. The multifunctional massage machine integrates the functions of adjustable massage mode, mobile phone APP/WeChat small program control, remote controller control, voice broadcast and hot compress, and is multifunctional.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic block diagram of a Bluetooth massager provided by the present invention;
FIG. 2 is a schematic diagram of a power management circuit provided by the present invention;
FIG. 3 is a schematic diagram of an EMS output circuit provided by the present invention;
FIG. 4 is a schematic diagram of a mixed signal processor provided by the present invention;
FIG. 5 is a schematic diagram of a heat pack control circuit according to the present invention;
FIG. 6 is a schematic diagram of an audio power amplifier circuit according to the present invention;
FIG. 7 is a schematic diagram of a 433 remote control circuit provided by the present invention;
fig. 8 is a schematic interface diagram of a mobile phone terminal APP or a wechat applet provided in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment of the invention discloses a control circuit of a bluetooth massager, comprising: the device comprises a mixed signal processor, and a power management circuit, an audio power amplifier circuit and an EMS output circuit which are respectively connected with the mixed signal processor;
the mixed signal processor exchanges data with an APP (application) or a WeChat applet at a mobile phone terminal through a Bluetooth BLE protocol;
the mixed signal processor outputs a voice signal to the audio amplification circuit, and the audio amplification circuit performs power amplification on the voice signal output by the mixed signal processor and broadcasts the voice signal;
the mixed signal processor outputs a detection signal PWM IN to the EMS output circuit after the power supply is switched on, judges whether the massage instrument is worn or not according to whether voltage difference exists between corresponding elements IN the EMS output circuit, and outputs a modulatable signal PWM1 and two paths of pulse signals PWM2 and PWM3 with different polarities to the EMS output circuit after the massage instrument is judged to be worn;
the EMS output circuit is switched on and off under a certain switching frequency, and adjusts the amplitude of the pulse signals PWM2 and PWM3 according to the modulatable signal PWM1 to output two paths of microcurrents with opposite polarities.
In a further advantageous embodiment, the mixed signal processor is further configured to switch the polarities of the pulse signals PWM2 and PWM3 according to a preset switching timing.
In other embodiments, the switching frequency is 4k.
Specifically, as shown in fig. 2, the power management circuit includes: the charging circuit comprises a charging chip U1, capacitors C1-C4, resistors R1-R4 and a charging interface J1; the charging chip U1 is a TC4056 chip, the PROG pin is grounded through a resistor R3, the TEMP pin is grounded, and the VCC pin and the CE pin are connected and then respectively connected with a power supply VCC, one end of a capacitor C1, one end of a capacitor C2 and one end of the resistor R1; the other end of the capacitor C1 and the other end of the capacitor C2 are grounded; the other end of the resistor R1 is connected with DC-IN; a CHRG pin and a STDBY pin of the charging chip U1 are respectively connected with the mixed signal processor; the BAT pin is respectively connected with the positive electrode of the battery, one end of the capacitor C3 and one end of the capacitor C4; the other end of the capacitor C3 and the other end of the capacitor C4 are both grounded; the model of the charging interface J1 is USB-MICRO, a VBUS pin of the J1 is connected with a power VCC, a D-pin is connected into the mixed signal processor through a resistor R2, a D + pin is connected into the mixed signal processor through a resistor R4, an ID pin is connected into a USB ID, and a GND pin and a SHELL pin are both grounded.
In one embodiment, as shown in fig. 3, the EMS output circuit includes a wear detection sub-circuit, a boost sub-circuit, and a two-arm pulse sub-circuit;
the wearing detection sub-circuit is used for judging whether the user wears the massage instrument or not according to the detection signal PWM IN output by the mixed signal processor;
the voltage boosting sub-circuit is used for receiving the modulatable signal PWM1 and outputting corresponding voltage;
the double-arm pulse sub-circuit is used for receiving the pulse signals PWM2 and PWM3, carrying out corresponding amplitude modulation on the pulse signals PWM2 and PWM3 according to the voltage output by the booster sub-circuit, and then outputting micro-currents with different polarities.
Specifically, the boost sub-circuit includes: diodes D2, D4 and D5, resistors R22, R24, R25 and R26, a triode Q2, a capacitor C17, an electrolytic capacitor C18 and an inductor L4;
the anode of the diode D2 is connected with the mixed signal processor and receives the modulatable signal PWM1; the cathode of the diode D2 is respectively connected with one end of the resistor R22 and one end of the capacitor C17; the other end of the resistor R22 and the other end of the capacitor C17 are connected with each other and then are respectively connected with one end of a resistor R24 and the base electrode of the triode Q2; the other end of the resistor R24 and the emitting electrode of the triode Q2 are grounded; the collector of the triode Q2 is respectively connected with the anode of the diode D4 and one end of the inductor L4; the other end of the inductor L4 is connected to a power supply VCC; the diode D5 and the diode D4 are connected in series and then are respectively connected with one end of the resistor R25, one end of the resistor R26 and the anode of the capacitor C18; the cathode of the capacitor C18 and the other end of the resistor R26 are both grounded; the other end of the resistor R25 is connected with the double-arm pulse sub-circuit.
The two-arm pulse sub-circuit comprises: resistors R27, R28, R29, R30, R31, R34, R35 and R36, triodes Q3, Q4, Q5, Q6, Q7 and Q8;
the emitter of the triode Q3 is respectively connected with the other end of the resistor R25 and one end of the resistor R27; the base electrode of the triode Q3 is connected with one end of the resistor R28; the other end of the resistor R27, the other end of the resistor R28 and one end of the resistor R29 are connected with each other and then are connected to the collector of the triode Q4; the emitter of the triode Q4 is grounded, and the base is connected with the resistor R30 and then connected with the pulse signal PWM2; the base electrode of the triode Q5 is connected with one end of the resistor R31; the collector of the triode Q5 is connected with the wearing detection sub-circuit; an emitting electrode of the triode Q5 is connected with a collecting electrode of the triode Q3, and a connecting node of the emitting electrode and the collecting electrode is used as a first current output end;
an emitting electrode of the triode Q6 is respectively connected with the other end of the resistor R25 and one end of the resistor R34, and a base electrode of the triode Q6 is connected with one end of the resistor R35; the other end of the resistor R34, the other end of the resistor R35 and the other end of the resistor R31 are connected with each other and then are connected to a collector of the triode Q7; the emitting electrode of the triode Q7 is grounded, and the base electrode is connected with the resistor R36 and then connected with the pulse signal PWM3; the base electrode of the triode Q8 is connected with the other end of the resistor R29; the collector of the triode Q8 is respectively connected with the collector of the triode Q5 and the wearing detection sub-circuit; an emitting electrode of the triode Q8 is connected with a collecting electrode of the triode Q6, and a connecting node of the emitting electrode and the collecting electrode is used as a second current output end;
the first current output terminal and the second current output terminal have opposite polarities.
The wear detection sub-circuit includes: the circuit comprises a triode Q9, a resistor R33, a resistor R37, a resistor R38, a capacitor C23, a diode D7 and a diode D8; wherein, the collector of the triode Q9 is connected with the detection signal PWM IN, the emitter is grounded, and the base is connected with one end of the resistor R38; the other end of the resistor R38, one end of the resistor R33, one end of the capacitor C23, and the anode of the diode D7 are connected to each other, and are connected to the collector of the transistor Q5 and the collector of the transistor Q8; the diode D8 and the diode D7 are connected in series and then connected with the other end of the resistor R33 and the other end of the capacitor C23 and grounded; one end of the resistor R37 is connected with the collector of the triode Q9, and the other end is connected with a 3.3V power supply.
The invention outputs a PWM1 modulation signal with 4K switching frequency through a mixed signal processor, controls a boosting triode Q2 to carry out on-off operation on a power inductor L4 with 2.2M through an RC anti-interference protection circuit, stores energy through an electrolytic capacitor C18 (3.3 uF) after passing through diodes D4 and D5, connects a resistor R26 with the electrolytic capacitor in parallel, and adjusts the resistance of the resistor R26 according to the actual situation, thereby stabilizing the boosted voltage and providing a proper and comfortable voltage current. After stabilizing the voltage, two pairs of electronic circuits with interchangeable electric polarities and switching modes of upper and lower arms are formed by the two-arm pulse sub-circuit, the micro-current of the bidirectional electrode is output to the massage contact piece, and the switching time sequence of the upper and lower arms is adjusted and controlled by the mixed signal processor according to the preset mode state to control the output rhythm.
The wearing detection sub-circuit consists of a voltage-dividing resistor, a diode, a filter capacitor and a triode, whether current flows through the circuit is detected in a mode that a voltage difference is generated between two ends of the element through a current flowing element, whether a user wears the circuit or wears the circuit in place can be detected at any time in practical application, relevant results are sent to the mixed signal processor, and whether shutdown or pulse intensity reduction and the like are judged.
In one embodiment, as shown in fig. 4, the core board of the mixed signal processor is a chip of the chinese blue signal AB53 series, and the core board is loaded with an LED indicator circuit and a key control circuit.
More advantageously, it further comprises: a hot compress control circuit; the hot compress control circuit is connected with the mixed signal processor; the mixed signal processor outputs a pulse signal PWM4 to the hot compress control circuit; the hot compress control circuit heats according to the pulse signal PWM4 and performs constant temperature control.
The specific circuit structure of the hot compress control circuit is shown in fig. 5, and comprises an MOS tube with the model number of AO3400, a resistor R17, a resistor R18 and a thermistor R16; a pin G of the MOS tube is respectively connected with one end of a resistor R17 and one end of a resistor R18; the pin S and the other end of the resistor R18 are grounded; the other end of the resistor R17 receives the pulse signal PWM4 output by the mixed signal processor; two ends of the thermistor R16 are respectively connected with the mixed signal processor and the 3.3V power supply.
The switch MOS tube realizes the conversion from battery energy storage to heating energy, detects the heating value through the 10K NTC thermistor, transmits data to the mixed signal processor, and controls the on-off of the MOS tube according to the data detected by the thermistor through the mixed signal processor, thereby achieving the constant temperature effect.
In one embodiment, as shown in fig. 6, the audio power amplifier circuit includes: the power amplifier, the electrolytic capacitor C6, the capacitors C8, C9, C10 and C11, the resistors R10, R13, R14 and R15 and the chip inductor FB1; the power amplifier is in a model NS4150, a CTRL pin of the power amplifier is connected with one end of a resistor R14, and the other end of the resistor R14 is respectively connected with one end of a capacitor C10 and one end of a resistor R15; a VDD pin of the power amplifier is connected with one end of a capacitor C11; the other end of the capacitor C11, the other end of the capacitor C10 and the other end of the resistor R15 are grounded; an IN + pin of the power amplifier is connected with a resistor R10 and a capacitor C8 IN sequence and then is connected to the mixed signal processor; the IN-pin of the power amplifier is connected with a resistor R13 and a capacitor C9 IN sequence and then grounded; a VDD pin of the power amplifier is respectively connected with one end of the patch inductor FB1 and the anode of the electrolytic capacitor C6; the other end of the chip inductor FB1 is connected with the battery BAT +, and the cathode of the electrolytic capacitor C6 is grounded; and an OUT + pin and an OUT-pin of the power amplifier are connected into the wiring terminals.
The audio power amplification circuit is internally provided with overcurrent protection, overheat protection and undervoltage protection functions, so that the chip is effectively protected from being damaged under the abnormal working condition, and the 3W single-channel D-type audio is fully subjected to power amplification by utilizing a spread spectrum technology.
In other embodiments, further comprising: 433 a remote control circuit; 433 the remote control circuit is connected with the mixed signal processor;
the 433 remote control circuit is used for converting 433 signals sent by an external remote controller into level signals and outputting the level signals to the mixed signal processor.
Specifically, as shown in fig. 7, the 433 remote control circuit includes: the decoding receiving chip U4, a resistor R32, a crystal oscillator Y2, capacitors C19-C22, and inductors L5 and L6; the decoding receiving chip U4 is VI510L in model, the RO pin of U4 is grounded through a crystal oscillator Y2, the SHUT pin of U4 is grounded through a resistor R32, the NC pin and the DO pin of U4 are connected into the mixed signal processor, the GND pin of U4 is grounded, the ANT pin of U4 is respectively connected with one end of a capacitor C19 and one end of an inductor L5, the other end of the capacitor C19 is respectively connected with one end of a capacitor C20 and one end of an inductor L6, and the other end of the inductor L5, the other end of the capacitor C20 and the other end of the inductor L6 are grounded; a VDD pin of the U4 is respectively connected to a power supply and one end of a capacitor C21, and the other end of the capacitor C21 is grounded; the CTH pin of U4 is connected with one end of a capacitor C22, and the other end of the capacitor C22 is grounded.
In addition, the 433 remote control circuit also has a standby function, so that the electric quantity of the battery can be saved when the remote control circuit does not work, and the battery can be utilized to the maximum extent.
As shown in fig. 8, after the communication relation is established between the mobile phone terminal APP or the wechat applet and the massage instrument, the mobile phone terminal APP or the wechat applet displays information such as a massage strength gear, a hot compress temperature gear, a massage mode, a voice on-off button and a power-off button in real time. The user can acquire and adjust the current state of the massage instrument in real time through the mobile phone terminal.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A control circuit of bluetooth massage appearance which characterized in that includes: the device comprises a mixed signal processor, a power management circuit, an audio power amplification circuit and an EMS output circuit, wherein the power management circuit, the audio power amplification circuit and the EMS output circuit are respectively connected with the mixed signal processor;
the mixed signal processor exchanges data with a mobile phone end APP or a WeChat applet through a Bluetooth BLE protocol;
the mixed signal processor outputs a voice signal to the audio power amplification circuit, and the audio power amplification circuit performs power amplification on the voice signal output by the mixed signal processor and broadcasts the voice signal;
the mixed signal processor outputs a detection signal PWMIN to the EMS output circuit after the power supply is switched on, judges whether the massage instrument is worn or not according to whether a voltage difference exists between corresponding elements in the EMS output circuit, and outputs a channel of modulatable signal PWM1 and two channels of pulse signals PWM2 and PWM3 with different polarities to the EMS output circuit after the massage instrument is judged to be worn;
the EMS output circuit is switched on and off under a certain switching frequency, adjusts the amplitudes of pulse signals PWM2 and PWM3 according to a modulable signal PWM1 and outputs two paths of microcurrents with opposite polarities;
the EMS output circuit comprises a wearing detection sub-circuit, a boosting sub-circuit and a double-arm pulse sub-circuit;
the boost sub-circuit includes: diodes D2, D4 and D5, resistors R22, R24, R25 and R26, a triode Q2, a capacitor C17, an electrolytic capacitor C18 and an inductor L4;
the anode of the diode D2 is connected with the mixed signal processor and receives the modulatable signal PWM1; the cathode of the diode D2 is respectively connected with one end of the resistor R22 and one end of the capacitor C17; the other end of the resistor R22 and the other end of the capacitor C17 are connected with each other and then are respectively connected with one end of a resistor R24 and the base electrode of the triode Q2; the other end of the resistor R24 and the emitting electrode of the triode Q2 are grounded; the collector of the triode Q2 is respectively connected with the anode of the diode D4 and one end of the inductor L4; the other end of the inductor L4 is connected to a power supply VCC; the diode D5 and the diode D4 are connected in series and then are respectively connected with one end of the resistor R25, one end of the resistor R26 and the anode of the capacitor C18; the cathode of the capacitor C18 and the other end of the resistor R26 are both grounded; the other end of the resistor R25 is connected with the double-arm pulse sub-circuit;
the adjustable signal PWM1 is stabilized by the voltage boosting sub-circuit, and then the two-arm pulse sub-circuit forms two pairs of electronic circuits with interchangeable electric polarities and switching modes of an upper arm and a lower arm, micro-current of a bidirectional electrode is output to the massage contact piece, and the switching time sequence of the upper arm and the lower arm is adjusted and controlled by the mixed signal processor according to the preset mode state to output rhythm.
2. The control circuit of claim 1, wherein the mixed signal processor is further configured to switch the polarities of the pulse signals PWM2 and PWM3 according to a preset switching sequence.
3. The control circuit of the Bluetooth massage apparatus according to claim 1,
the wearing detection sub-circuit is used for judging whether the user wears the massage instrument or not according to the detection signal PWMIN output by the mixed signal processor;
the boost sub-circuit is used for receiving the modulatable signal PWM1 and outputting corresponding voltage;
the double-arm pulse sub-circuit is used for receiving the pulse signals PWM2 and PWM3, carrying out corresponding amplitude modulation on the pulse signals PWM2 and PWM3 according to the voltage output by the booster sub-circuit, and then outputting micro-currents with different polarities.
4. The control circuit of claim 1, wherein the double-arm pulse sub-circuit comprises: resistors R27, R28, R29, R30, R31, R34, R35 and R36, triodes Q3, Q4, Q5, Q6, Q7 and Q8;
the emitter of the triode Q3 is respectively connected with the other end of the resistor R25 and one end of the resistor R27; the base electrode of the triode Q3 is connected with one end of the resistor R28; the other end of the resistor R27, the other end of the resistor R28 and one end of the resistor R29 are connected with each other and then are connected to the collector of the triode Q4; the emitter of the triode Q4 is grounded, and the base is connected with the resistor R30 and then connected with the pulse signal PWM2; the base electrode of the triode Q5 is connected with one end of the resistor R31; the collector of the triode Q5 is connected with the wearing detection sub-circuit; an emitting electrode of the triode Q5 is connected with a collecting electrode of the triode Q3, and a connecting node of the emitting electrode and the collecting electrode is used as a first current output end;
an emitting electrode of the triode Q6 is respectively connected with the other end of the resistor R25 and one end of the resistor R34, and a base electrode of the triode Q6 is connected with one end of the resistor R35; the other end of the resistor R34, the other end of the resistor R35 and the other end of the resistor R31 are connected with each other and then are connected to a collector of the triode Q7; the emitting electrode of the triode Q7 is grounded, and the base electrode is connected with the resistor R36 and then connected with the pulse signal PWM3; the base electrode of the triode Q8 is connected with the other end of the resistor R29; the collector of the triode Q8 is respectively connected with the collector of the triode Q5 and the wearing detection sub-circuit; an emitting electrode of the triode Q8 is connected with a collecting electrode of the triode Q6, and a connecting node of the emitting electrode and the collecting electrode is used as a second current output end;
the first current output terminal and the second current output terminal have opposite polarities.
5. The control circuit of claim 4, wherein the wearing detection sub-circuit comprises: the triode Q9, the resistor R33, the resistor R37, the resistor R38, the capacitor C23, the diode D7 and the diode D8; wherein, the collector of the triode Q9 is connected with the detection signal PWM IN, the emitter is grounded, and the base is connected with one end of the resistor R38; the other end of the resistor R38, one end of the resistor R33, one end of the capacitor C23 and the anode of the diode D7 are connected with each other and are connected into the collector of the triode Q5 and the collector of the triode Q8; the diode D8 is connected with the diode D7 in series, then is connected with the other end of the resistor R33 and the other end of the capacitor C23, and is grounded; one end of the resistor R37 is connected with the collector of the triode Q9, and the other end is connected with a 3.3V power supply.
6. The control circuit of claim 1, further comprising: a hot compress control circuit; the hot compress control circuit is connected with the mixed signal processor; the mixed signal processor outputs a pulse signal PWM4 to the hot compress control circuit; and the hot compress control circuit heats according to the pulse signal PWM4 and performs constant temperature control.
7. The control circuit of claim 1, further comprising: 433 a remote control circuit; the 433 remote control circuit is connected with the mixed signal processor;
and the 433 remote control circuit is used for converting 433 signals sent by an external remote controller into level signals and outputting the level signals to the mixed signal processor.
8. The control circuit of claim 1, wherein the core board of the mixed signal processor is a chip of the Zhongke blue AB53 series, and the core board is equipped with an LED indicator light circuit and a key control circuit.
9. The control circuit of claim 1, wherein the switching frequency is 4k.
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| CN202210833154.3A CN115192906B (en) | 2022-07-14 | 2022-07-14 | Control circuit of bluetooth massage appearance |
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| CN202210833154.3A CN115192906B (en) | 2022-07-14 | 2022-07-14 | Control circuit of bluetooth massage appearance |
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