CN212838521U - Voice control circuit of fan - Google Patents
Voice control circuit of fan Download PDFInfo
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- CN212838521U CN212838521U CN202021492509.XU CN202021492509U CN212838521U CN 212838521 U CN212838521 U CN 212838521U CN 202021492509 U CN202021492509 U CN 202021492509U CN 212838521 U CN212838521 U CN 212838521U
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- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims abstract description 12
- 230000006641 stabilisation Effects 0.000 claims abstract description 12
- 238000011105 stabilization Methods 0.000 claims abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 11
- 230000000151 anti-reflux effect Effects 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to a fan voice control circuit. The utility model discloses a main control chip, LDO power steady voltage chip, DCDC power chip that steps up, main control chip are the GX8002 pronunciation chip of Hangzhou state core science and technology shares limited company. Two output ends of the microphone are respectively connected with two microphone input pins of the main control chip through a blocking capacitor, and the start key is connected with a general IO pin of the main control chip. The output end of the LDO power supply voltage stabilization chip is connected with a power supply input pin of the main control chip, and the input end of the LDO power supply voltage stabilization chip is connected with the anode of the lithium battery. The DC power supply booster chip comprises an enabling pin, a voltage input pin and one end of an inductor, wherein the enabling pin, the voltage input pin and one end of the inductor are connected with the anode of a lithium battery, an output pin is connected with the other end of the inductor and the anode of an anti-reflux diode, a feedback pin is connected with one end of three feedback resistors, and the other ends of the three feedback resistors are respectively connected with another universal IO pin of a main control chip, the cathode of the anti-reflux diode and the ground. The utility model discloses prolong the stand-by time, strengthened equipment use comfort.
Description
Technical Field
The utility model relates to a fan voice control circuit.
Background
Handheld fans or neck-hanging fans with batteries are increasingly favored by consumers because of their portability and convenient use. Especially, the hanging neck fan does not need to be held by hands after being started, and the use is more convenient. The development of voice recognition technology makes voice control become a common technology, and voice-controlled electric appliances are widely applied. Voice controlled fans have also become a more convenient device. However, because the power consumption of the voice recognition technology is large, the handheld fan or the neck hanging fan is powered by a battery, and the standby time is required to be long. The use of high power voice recognition technology in a handheld or neck fan has the undesirable effect of reducing the standby time of the device.
Disclosure of Invention
The utility model aims at providing a fan voice control circuit.
The utility model discloses a main control chip U, LDO power steady voltage chip U1DCDC power supply boost chip U2(ii) a The main control chip U is GX8002 voice chip of Hangzhou national core science and technology corporation and the LDO power supply voltage stabilization chip U1And DCDC power supply boost chip U2Functional chips are publicly sold in the market.
Two output ends of the microphone M are respectively connected with a first DC blocking capacitor C1And a second DC blocking capacitor C2One end of (1), a first DC blocking capacitor C1And a second DC blocking capacitor C2The other end of the main control chip U is connected with two microphone input pins ADC _ P and ADC _ N of the main control chip U; the starting key K is connected with a general IO pin of the main control chip U;
LDO power supply voltage stabilization chip U1The output end of the voltage regulator is connected with a power input pin VDD3.3 of the main control chip U, and the LDO power supply voltage regulator chip U1The input end of the lithium battery B is connected with the anode of the lithium battery B;LDO power supply voltage stabilization chip U13.3V voltage is output;
DCDC power boost chip U2The enabling pin EN, the voltage input pin VIN, one end of the inductor L is connected with the anode of the lithium battery B, and the DCDC power supply boosting chip U2The output pin LX is connected with the other end of the inductor L and the anode of the anti-reflux diode D in a connected mode; DCDC power boost chip U2The feedback pin FB is connected with the first feedback resistor R1A second feedback resistor R2A third feedback resistor R3One terminal of (1), a first feedback resistor R1The other end of the second feedback resistor R is connected with the other general IO pin of the main control chip U2The other end of the first feedback resistor is connected with the cathode of the anti-reflux diode D and is used as the positive input end of the fan motor, and the third feedback resistor R3And the other end of the same is grounded.
The GX8002 voice chip of Hangzhou national core science and technology company comprises a voice control system and a voice detection system. When the fan switch button is turned off, the battery is disconnected from the circuit, and the fan is in an inoperative state. When the fan switch button is switched on, the battery is switched on with the circuit, and the fan is in a standby working state. And in a standby state, the human voice detection system is powered on, and the voice control system is powered off. And in the standby state, if the human voice detection system detects human voice, entering a detection state. And powering on the voice control system in the detection state, and performing voice recognition on human voice. And entering an activated state if the recognized human voice is the set control voice. If the recognized voice is not the set control voice, the voice control system is powered off, and the fan returns to the standby state. If the fan is in an activated state, the human voice detection system and the voice control system are powered on to work all the time. And controlling the rotating motor according to the setting intention corresponding to the voice command. In the standby state, the voice control system with high power consumption is in the power-off state, and only the voice detection system with low power consumption works, so that the fan can work in a standby mode for a long time by depending on a battery.
The utility model discloses utilize current main control chip and function chip to carry out the circuit and build, prolonged the stand-by time, strengthened equipment use comfort.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in FIG. 1, a voice control circuit for a fan comprises a power supply voltage stabilization chip U of a main control chip U, LDO1DCDC power supply boost chip U2. The main control chip U refers to GX8002 voice chip of Hangzhou national core science and technology company Limited, and the chip comprises a voice control system and a voice detection system. LDO power supply voltage stabilization chip U1And DCDC power supply boost chip U2Is a mature functional chip.
Two output ends of the microphone M are respectively connected with a first DC blocking capacitor C1And a second DC blocking capacitor C2One end of (1), a first DC blocking capacitor C1And a second DC blocking capacitor C2The other end of the main control chip U is connected with two microphone input pins ADC _ P and ADC _ N of the main control chip U; the starting key K is connected with a general IO pin of the main control chip U.
LDO power supply voltage stabilization chip U1The output end of the voltage regulator is connected with a power input pin VDD3.3 of the main control chip U, and the LDO power supply voltage regulator chip U1The input end of the lithium battery B is connected with the anode of the lithium battery B; LDO power supply voltage stabilization chip U1And 3.3V voltage is output.
DCDC power boost chip U2The enabling pin EN, the voltage input pin VIN, one end of the inductor L is connected with the anode of the lithium battery B, and the DCDC power supply boosting chip U2The output pin LX is connected with the other end of the inductor L and the anode of the anti-reflux diode D in a connected mode; DCDC power boost chip U2The feedback pin FB is connected with the first feedback resistor R1A second feedback resistor R2A third feedback resistor R3One terminal of (1), a first feedback resistor R1The other end of the second feedback resistor R is connected with the other general IO pin of the main control chip U2The other end of the first feedback resistor is connected with the cathode of the anti-reflux diode D and is used as the positive input end of the fan motor, and the third feedback resistor R3And the other end of the same is grounded.
When the fan switch button is turned off, the battery is disconnected from the circuit, and the fan is in an inoperative state. When the fan switch button is switched on, the battery is switched on with the circuit, and the fan is in a standby working state. And in a standby state, the human voice detection system is powered on, and the voice control system is powered off. And in the standby state, if the human voice detection system detects human voice, entering a detection state. And powering on the voice control system in the detection state, and performing voice recognition on human voice. And entering an activated state if the recognized human voice is the set control voice. If the recognized voice is not the set control voice, the voice control system is powered off, and the fan returns to the standby state. If the fan is in an activated state, the human voice detection system and the voice control system are powered on to work all the time. And controlling the rotating motor according to the setting intention corresponding to the voice command. In the standby state, the voice control system with high power consumption is in the power-off state, and only the voice detection system with low power consumption works, so that the fan can work in a standby mode for a long time by depending on a battery.
Claims (1)
1. A fan voice control circuit is characterized in that: comprises a main control chip U, LDO power supply voltage stabilization chip U1DCDC power supply boost chip U2(ii) a The main control chip U is a GX8002 voice chip of Hangzhou national core science and technology corporation;
two output ends of the microphone M are respectively connected with a first DC blocking capacitor C1And a second DC blocking capacitor C2One end of (1), a first DC blocking capacitor C1And a second DC blocking capacitor C2The other end of the main control chip U is connected with two microphone input pins ADC _ P and ADC _ N of the main control chip U; the starting key K is connected with a general IO pin of the main control chip U;
LDO power supply voltage stabilization chip U1The output end of the voltage regulator is connected with a power input pin VDD3.3 of the main control chip U, and the LDO power supply voltage regulator chip U1The input end of the lithium battery B is connected with the anode of the lithium battery B; LDO power supply voltage stabilization chip U13.3V voltage is output;
the DCDC power supply boost chip U2The enabling pin EN, the voltage input pin VIN, one end of the inductor L is connected with the anode of the lithium battery B, and the DCDC power supply boosting chip U2The output pin LX is connected with the other end of the inductor L and the anode of the anti-reflux diode D in a connected mode; DCDC power boost chipU2The feedback pin FB is connected with the first feedback resistor R1A second feedback resistor R2A third feedback resistor R3One terminal of (1), a first feedback resistor R1The other end of the second feedback resistor R is connected with the other general IO pin of the main control chip U2The other end of the first feedback resistor is connected with the cathode of the anti-reflux diode D and is used as the positive input end of the fan motor, and the third feedback resistor R3And the other end of the same is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021492509.XU CN212838521U (en) | 2020-07-24 | 2020-07-24 | Voice control circuit of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021492509.XU CN212838521U (en) | 2020-07-24 | 2020-07-24 | Voice control circuit of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212838521U true CN212838521U (en) | 2021-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021492509.XU Active CN212838521U (en) | 2020-07-24 | 2020-07-24 | Voice control circuit of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212838521U (en) |
-
2020
- 2020-07-24 CN CN202021492509.XU patent/CN212838521U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 310012 5-6 / F, block a, East Software Park Innovation Building, 90 Wensan Road, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Guoxin Microelectronics Co.,Ltd. Country or region after: China Address before: 310012 5-6 / F, block a, East Software Park Innovation Building, 90 Wensan Road, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU NATIONALCHIP SCIENCE & TECHNOLOGY Co.,Ltd. Country or region before: China |