CN212115163U - Control circuit for OEMS - Google Patents
Control circuit for OEMS Download PDFInfo
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- CN212115163U CN212115163U CN202020632284.7U CN202020632284U CN212115163U CN 212115163 U CN212115163 U CN 212115163U CN 202020632284 U CN202020632284 U CN 202020632284U CN 212115163 U CN212115163 U CN 212115163U
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Abstract
The utility model discloses a control circuit for OEMS, include: MCU microprocessor U1, LED pilot lamp control circuit, button detection circuit, power control circuit, transformer drive circuit, output control circuit, battery charge management circuit. The 3.7V rechargeable lithium battery provides power for the system. The MCU microprocessor U1 is respectively connected with an LED indicator lamp control circuit, a key detection circuit, a power supply control circuit, a transformer drive circuit and an output control circuit through an I/O port, and the LED indicator lamp control circuit provides a system running state; the key detection circuit can realize system operation through external key input; the power supply control circuit can control the on and off of the rear-stage power supply; the transformer driving circuit drives the small power transformer to boost voltage; the output control circuit controls the on and off of the electric signal output. The utility model discloses a control circuit integrated nature is higher, selects for use components and parts less, connects simplely, and the interference killing feature is stronger.
Description
Technical Field
The utility model belongs to the technical field of circuit control, in particular to a control circuit for OEMS.
Background
At present, an EMS (micro-current) technology applied to a household beauty instrument realizes a voltage boosting mode for a DC-DC boosting IC circuit, the boosted voltage is small, a plurality of peripheral components are arranged, and the circuit connection is complex. The utility model discloses a transformer mode of stepping up, the back voltage that steps up is bigger than the DC-DC voltage after IC steps up that steps up, adopts MOS pipe drive step up transformer, and peripheral components and parts are less, connect simpler
Disclosure of Invention
An object of the utility model is to provide a control circuit for OEMS to solve above-mentioned problem.
OEMS is a short name for EMS (micro-current) technology under the brand of "OGP".
In order to achieve the purpose, the invention adopts the following technical scheme:
a control circuit for an OEMS comprises an MCU microprocessor, an LED indicator lamp control circuit, a key detection circuit, a power supply control circuit, a transformer drive circuit, an output control circuit, a battery charging management circuit, a low dropout linear voltage regulator LDO and a battery; the LED indicator lamp control circuit, the key detection circuit, the power supply control circuit, the transformer driving circuit, the output control circuit and the low-dropout linear voltage regulator LDO are all connected to the MCU microprocessor, the low-dropout linear voltage regulator LDO is connected with the battery, and the battery is connected with the battery charging management circuit.
Further, the MCU microprocessor is connected with the LED indicator lamp control circuit through the I/O port; the LED indicator lamp control circuit comprises a resistor R2 and an LED indicator lamp; the resistor R2 is connected in series with the LED indicator light.
Further, the MCU microprocessor is connected with the key detection circuit through an I/O port; the key detection circuit comprises a resistance touch switch SW1, and a resistance touch switch SW1 is grounded.
Furthermore, the MCU microprocessor is connected with a power supply control circuit through an I/O port, and the power supply control circuit comprises a resistor R1, a resistor R3, a resistor R4, a resistor R5, an NPN triode Q2 and a PMOS tube Q1; the source S of the PMOS transistor Q1 is connected with the resistor R1, the gate G is connected with the resistor R3, and the resistor R1 is connected with the resistor R3 in series; the resistor R3 is connected with the collector of the NPN triode Q2, the resistor R4 is connected with the base of the NPN triode Q2, and the resistor R5 is arranged between the emitter and the base of the NPN triode Q2; the resistor R4 is connected to the I/O port of the MCU microprocessor, and the power supply of the drain electrode of the PMOS tube can be controlled to be switched on and off by controlling the high and low levels of the I/O port through a program.
Further, the MCU microprocessor is connected with the transformer driving circuit through an I/O port; the transformer driving circuit comprises a resistor R12, a resistor R21, a resistor R25, a resistor R27, a capacitor C8, a capacitor C9, a Schottky diode D4, an NMOS tube Q6, a transformer L2 and an MOS driving chip U8; the MOS driving chip U8 is connected with one end of a capacitor C9, and the other end of the capacitor C9 is grounded; one end of the resistor R21 is connected with the anode input of the MOS driving chip U8, and the other end is connected with the cathode input of the MOS driving chip U8; the output end of the MOS driving chip U8 is sequentially connected with a resistor R25 and a resistor R27; the gate of the NMOS transistor Q6 is connected between the resistor R25 and the resistor R27, and the source of the NMOS transistor Q6 and the resistor R27 are both grounded; the drain of the NMOS tube Q6 is connected with a transformer L2, and the transformer L2 is also connected with a resistor R12 and a capacitor C8; the 3 rd pin IN + of the MOS driving chip U8 is connected to the I/O port of the MCU microprocessor, and the frequency of the output voltage of the secondary coil of the transformer L2 can be controlled by controlling the frequency of the PWM signal output by the I/O port through a program.
Further, the MCU microprocessor is connected with the output control circuit through an I/O port; the output control circuit comprises R28, a resistor R36, an optoelectronic solid state relay U7 and an optoelectronic solid state relay U9; the 1 st pins of the photoelectric solid-state relays U7 and U9 are connected to an I/O port of the MCU microprocessor, the 3 rd pins of the photoelectric solid-state relays U7 and U9 are connected to an output terminal, and the voltage of each output terminal can be controlled to be switched on and off by controlling the high and low level of each I/O port through a program.
Furthermore, one end of the battery charging management circuit is a 5V input of the charger, and the other end of the battery charging management circuit is connected to the positive electrode and the negative electrode of the battery; the battery charging management circuit comprises a resistor R10, a capacitor C3, a capacitor C4, a battery charging management chip U2 and a battery terminal P1; the 4 th pin of the battery charging management chip U2 inputs 5V, the input 5V is connected with one end of a capacitor C3, and the other end of the capacitor C3 is grounded; a battery connecting terminal P1 is connected between the 1 st pin and the 5 th pin of the battery charging management chip U2, a capacitor C4 is connected to the battery connecting terminal P1 in parallel, and a 2 nd pin of the battery charging management chip U2 is connected with a resistor R10, a resistor R10 and a capacitor C4 which are all grounded.
Further, the MCU microprocessor is STM8L051F3P 6/ST.
Compared with the prior art, the invention has the following technical effects:
the MCU microprocessor U1 is respectively connected with an LED indicator lamp control circuit, a key detection circuit, a power supply control circuit, a transformer drive circuit and an output control circuit through an I/O port, and the LED indicator lamp control circuit provides a system running state; the key detection circuit can realize system operation through external key input; the power supply control circuit can control the on and off of the rear-stage power supply; the transformer driving circuit drives the small power transformer to boost voltage; the output control circuit controls the on and off of the electric signal output. The utility model discloses a control circuit integrated nature is higher, selects for use components and parts less, connects simplely, and the interference killing feature is stronger.
Drawings
Fig. 1 is a block diagram of a control circuit for an OEMS of the present invention;
fig. 2 is a schematic structural diagram of an LED indicator lamp control circuit in a control circuit for an OEMS according to the present invention;
fig. 3 is a schematic structural diagram of a key detection circuit in a control circuit for an OEMS of the present invention;
fig. 4 is a schematic structural diagram of a power control circuit in a control circuit for an OEMS according to the present invention;
fig. 5 is a schematic structural diagram of a transformer driving circuit in a control circuit for an OEMS according to the present invention;
fig. 6 is a schematic structural diagram of an output control circuit in a control circuit for an OEMS according to the present invention;
fig. 7 is a schematic structural diagram of a battery charging management circuit in a control circuit for an OEMS according to the present invention;
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1 to 7, a control circuit for an OEMS includes an MCU microprocessor, an LED indicator lamp control circuit, a key detection circuit, a power control circuit, a transformer driving circuit, an output control circuit, a battery charging management circuit, a low dropout linear regulator LDO, and a battery; the LED indicator lamp control circuit, the key detection circuit, the power supply control circuit, the transformer driving circuit, the output control circuit and the low-dropout linear voltage regulator LDO are all connected to the MCU microprocessor, the low-dropout linear voltage regulator LDO is connected with the battery, and the battery is connected with the battery charging management circuit. Wherein "O" in OEMS is the initial O of original; "E" takes the initial E of Electrical, M takes the initial M of Muscle, and S takes the initial S of Stimulation.
The MCU microprocessor is connected with the LED indicator lamp control circuit through the I/O port; the LED indicator lamp control circuit comprises a resistor R2 and an LED indicator lamp; the resistor R2 is connected in series with the LED indicator light.
The MCU microprocessor is connected with the key detection circuit through the I/O port; the key detection circuit comprises a resistance light touch switch SW1, and a fourth pin of the SW1 is grounded.
The MCU microprocessor is connected with a power supply control circuit through an I/O port, and the power supply control circuit comprises a resistor R1, a resistor R3, a resistor R4, a resistor R5, an NPN triode Q2 and a PMOS tube Q1; the pins 1, 2 and 3 of the PMOS tube Q1 are connected with a resistor R1, the pin 4 is connected with a resistor R3, and the resistor R1 is connected with the resistor R3 in series; the resistor R3 is connected with the collector of the NPN triode Q2, the resistor R4 is connected with the base of the NPN triode Q2, and the resistor R5 is arranged between the emitter and the base of the NPN triode Q2; the resistor R4 is connected to the I/O port of the MCU microprocessor U1, and the power supply of the drain electrode of the PMOS tube can be controlled to be switched on and off by controlling the high and low levels of the I/O port through a program.
The MCU microprocessor is connected with the transformer driving circuit through the I/O port; the transformer driving circuit comprises a resistor R12, a resistor R21, a resistor R25, a resistor R27, a capacitor C8, a capacitor C9, a Schottky diode D4, an NMOS tube Q6, a transformer L2 and an MOS driving chip U8; the pin 3 IN + of the MOS driving chip U8 is connected to the I/O port of the MCU microprocessor U1, and the frequency of the output voltage of the secondary coil of the transformer L2 can be controlled by controlling the frequency of the PWM signal output from the I/O port through a program.
The MCU microprocessor U2 is connected with the output control circuit through an I/O port; the output control circuit comprises R28, a resistor R36, an optoelectronic solid state relay U7 and an optoelectronic solid state relay U9; the 1 st pins of the photoelectric solid-state relays U7 and U9 are connected to an I/O port of the MCU microprocessor U1, the 3 rd pins of the photoelectric solid-state relays U7 and U9 are connected to output terminals, and the voltage of each output terminal can be controlled to be turned on and off by controlling the high and low level of each I/O port through a program.
One end of the battery charging management circuit is a 5V input of the charger, and the other end of the battery charging management circuit is connected with the anode and the cathode of the battery; the battery charging management circuit comprises a resistor R10, a capacitor C3, a capacitor C4, a battery charging management chip U2 and a battery terminal P1; the 4 th pin of the battery charging management chip U2 inputs 5V, and can charge a 3.7V lithium battery.
The MCU microprocessor is STM8L051F3P 6/ST.
The MCU microprocessor U1 is connected with the LED indicating lamp control circuit through an I/O port, and the MCU microprocessor U1 can control the current working state of the LED indicating circuit;
the MCU microprocessor U1 is connected with the key detection circuit through the I/O port, the pressing and loosening of the key can be judged by detecting the high-low level state of the I/O port, and the key can control the on-off of the circuit;
the MCU microprocessor U1 is connected with the power supply control circuit through an I/O port, and can select the on and off of a rear-stage power supply by changing the high and low level state of the I/O port;
the MCU microprocessor U1 is connected with the transformer driving circuit through the I/O port, and can select to turn on output and turn off output by changing the high and low level state of the I/O port;
the MCU microprocessor U2 is connected with the output control circuit through the I/O port, and the forward rotation and the reverse rotation of the stepping motor can be selected by changing the high-low level state of the I/O port;
one end of the battery charging management circuit is a 5V input of the charger, and the other end of the battery charging management circuit is connected with the anode and the cathode of the battery;
the MCU microprocessor U1 is STM8L051F3P 6/ST.
The battery power supply is subjected to low dropout linear regulator (LDO) voltage reduction and then provides power input for the MCU;
driving an NMOS tube by using an MOS drive IC;
the key can control the system to be started and shut down;
referring to fig. 1, the present invention provides a control circuit for an OEMS, comprising: MCU microprocessor U1, LED pilot lamp control circuit, button detection circuit, power control circuit, transformer drive circuit, output control circuit, battery charge management circuit. The 3.7V rechargeable lithium battery provides power for the system. The MCU microprocessor U1 is respectively connected with an LED indicator lamp control circuit, a key detection circuit, a power supply control circuit, a transformer drive circuit and an output control circuit through an I/O port, and the LED indicator lamp control circuit provides a system running state; the key detection circuit can realize system operation through external key input; the power supply control circuit can control the on and off of the rear-stage power supply; the transformer driving circuit drives the small power transformer to boost voltage; the output control circuit controls the on and off of the electric signal output.
The MCU microprocessor U1 is STM8L051F3P 6/ST.
As shown in fig. 2, the LED indicator lamp control circuit includes a resistor R2 and an LED indicator lamp LED 1. The indicator light control circuit is used for realizing the indication of the system state.
As shown in fig. 3, the key detection circuit includes a resistive touch switch SW1, which implements the operation of the system.
As shown in fig. 4, the power control circuit includes a resistor R1, a resistor R3, a resistor R4, a resistor R5, an NPN transistor Q2, and a PMOS transistor Q1. The resistor R4 is connected to the I/O port of the MCU microprocessor U1, and the power supply of the drain electrode of the PMOS tube can be controlled to be switched on and off by controlling the high and low levels of the I/O port through a program.
As shown in fig. 5, the transformer driving circuit includes a resistor R12, a resistor R21, a resistor R25, a resistor R27, a capacitor C8, a capacitor C9, a schottky diode D4, an NMOS transistor Q6, a transformer L2, and a MOS driving chip U8. The pin 3 IN + of the MOS driving chip U8 is connected to the I/O port of the MCU microprocessor U1, and the frequency of the output voltage of the secondary coil of the transformer L2 can be controlled by controlling the frequency of the PWM signal output from the I/O port through a program.
As shown in fig. 6, the output control circuit includes R28, a resistor R36, an opto-solid relay U7, and an opto-solid relay U9. The 1 st pins of the photoelectric solid-state relays U7 and U9 are connected to an I/O port of the MCU microprocessor U1, the 3 rd pins of the photoelectric solid-state relays U7 and U9 are connected to output terminals, and the voltage of each output terminal can be controlled to be turned on and off by controlling the high and low level of each I/O port through a program.
As shown in fig. 7, the battery charging management circuit includes a resistor R10, a capacitor C3, a capacitor C4, a battery charging management chip U2, and a battery terminal P1. The 4 th pin of the battery charging management chip U2 inputs 5V, and can charge a 3.7V lithium battery.
Claims (8)
1. A control circuit for an OEMS (optical emission monitoring System) is characterized by comprising an MCU (microprogrammed control Unit) microprocessor, an LED (light-emitting diode) indicator lamp control circuit, a key detection circuit, a power supply control circuit, a transformer driving circuit, an output control circuit, a battery charging management circuit, a low-dropout linear voltage regulator LDO (low dropout regulator) and a battery; the LED indicator lamp control circuit, the key detection circuit, the power supply control circuit, the transformer driving circuit, the output control circuit and the low-dropout linear voltage regulator LDO are all connected to the MCU microprocessor, the low-dropout linear voltage regulator LDO is connected with the battery, and the battery is connected with the battery charging management circuit.
2. The control circuit for an OEMS as claimed in claim 1, wherein the MCU microprocessor is connected to the LED indicator lamp control circuit via an I/O port; the LED indicator lamp control circuit comprises a resistor R2 and an LED indicator lamp; the resistor R2 is connected in series with the LED indicator light.
3. The control circuit for an OEMS of claim 1, wherein the MCU microprocessor is connected to the key detection circuit through an I/O port; the key detection circuit comprises a resistance touch switch SW1, and a resistance touch switch SW1 is grounded.
4. The control circuit for the OEMS as claimed in claim 1, wherein the MCU microprocessor is connected to the power control circuit via the I/O port, the power control circuit comprises a resistor R1, a resistor R3, a resistor R4, a resistor R5, an NPN transistor Q2 and a PMOS transistor Q1; the source S of the PMOS transistor Q1 is connected with the resistor R1, the gate G is connected with the resistor R3, and the resistor R1 is connected with the resistor R3 in series; the resistor R3 is connected with the collector of the NPN triode Q2, the resistor R4 is connected with the base of the NPN triode Q2, and the resistor R5 is arranged between the emitter and the base of the NPN triode Q2; the resistor R4 is connected to the I/O port of the MCU microprocessor, and the power supply of the drain electrode of the PMOS tube can be controlled to be switched on and off by controlling the high and low levels of the I/O port through a program.
5. The control circuit for an OEMS of claim 1, wherein the MCU microprocessor is connected to the transformer driver circuit via an I/O port; the transformer driving circuit comprises a resistor R12, a resistor R21, a resistor R25, a resistor R27, a capacitor C8, a capacitor C9, a Schottky diode D4, an NMOS tube Q6, a transformer L2 and an MOS driving chip U8; the MOS driving chip U8 is connected with one end of a capacitor C9, and the other end of the capacitor C9 is grounded; one end of the resistor R21 is connected with the anode input of the MOS driving chip U8, and the other end is connected with the cathode input of the MOS driving chip U8; the output end of the MOS driving chip U8 is sequentially connected with a resistor R25 and a resistor R27; the gate of the NMOS transistor Q6 is connected between the resistor R25 and the resistor R27, and the source of the NMOS transistor Q6 and the resistor R27 are both grounded; the drain of the NMOS tube Q6 is connected with a transformer L2, and the transformer L2 is also connected with a resistor R12 and a capacitor C8; the 3 rd pin IN + of the MOS driving chip U8 is connected to the I/O port of the MCU microprocessor, and the frequency of the output voltage of the secondary coil of the transformer L2 can be controlled by controlling the frequency of the PWM signal output by the I/O port through a program.
6. The control circuit for an OEMS of claim 1, wherein the MCU microprocessor is connected to the output control circuit via an I/O port; the output control circuit comprises R28, a resistor R36, an optoelectronic solid state relay U7 and an optoelectronic solid state relay U9; the 1 st pins of the photoelectric solid-state relays U7 and U9 are connected to an I/O port of the MCU microprocessor, the 3 rd pins of the photoelectric solid-state relays U7 and U9 are connected to an output terminal, and the voltage of each output terminal can be controlled to be switched on and off by controlling the high and low level of each I/O port through a program.
7. The control circuit for an OEMS of claim 1, wherein the battery charge management circuit has one end with a 5V input to the charger and the other end connected to the positive and negative electrodes of the battery; the battery charging management circuit comprises a resistor R10, a capacitor C3, a capacitor C4, a battery charging management chip U2 and a battery terminal P1; the 4 th pin of the battery charging management chip U2 inputs 5V, the input 5V is connected with one end of a capacitor C3, and the other end of the capacitor C3 is grounded; a battery connecting terminal P1 is connected between the 1 st pin and the 5 th pin of the battery charging management chip U2, a capacitor C4 is connected to the battery connecting terminal P1 in parallel, and a 2 nd pin of the battery charging management chip U2 is connected with a resistor R10, a resistor R10 and a capacitor C4 which are all grounded.
8. A control circuit for an OEMS as claimed in claim 1, characterised in that the MCU microprocessor is an STM8L051F3P 6/ST.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020632284.7U CN212115163U (en) | 2020-04-23 | 2020-04-23 | Control circuit for OEMS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020632284.7U CN212115163U (en) | 2020-04-23 | 2020-04-23 | Control circuit for OEMS |
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| Publication Number | Publication Date |
|---|---|
| CN212115163U true CN212115163U (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020632284.7U Active CN212115163U (en) | 2020-04-23 | 2020-04-23 | Control circuit for OEMS |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400734A (en) * | 2021-12-21 | 2022-04-26 | 北京航天晨信科技有限责任公司 | Double-circuit power supply circuit with instantaneous switch for activating battery to supply power |
-
2020
- 2020-04-23 CN CN202020632284.7U patent/CN212115163U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400734A (en) * | 2021-12-21 | 2022-04-26 | 北京航天晨信科技有限责任公司 | Double-circuit power supply circuit with instantaneous switch for activating battery to supply power |
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Address after: Room 617-620, Building 5, No. 2 Science Park Road, Baiyang Street, Qiantang District, Hangzhou City, Zhejiang Province, 310018 Patentee after: Hangzhou Time Machine Intelligent Electronic Technology Co.,Ltd. Address before: 710000 604, block a, Xi'an photoelectric Park, Yanta District, Xi'an City, Shaanxi Province Patentee before: Hangzhou Time Machine Intelligent Electronic Technology Co.,Ltd. |