CN211906950U

CN211906950U - Voice control circuit

Info

Publication number: CN211906950U
Application number: CN202020275151.9U
Authority: CN
Inventors: 彭井花; 胡永森
Original assignee: Yango University
Current assignee: Yango University
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-11-10
Anticipated expiration: 2030-03-09

Abstract

The utility model relates to a speech recognition technology field, in particular to voice control circuit, including handheld terminal circuit, infrared control terminal circuit and electric brake circuit, handheld terminal circuit includes first control circuit, voice recognition circuit, speech synthesis circuit, first button circuit and first power supply circuit, infrared control terminal circuit includes the second control circuit, infrared receiving circuit, infrared transmitting circuit, the second button circuit, second power supply circuit and OLED circuit, through setting up speech recognition circuit and speech synthesis circuit, after discerning user's voice command, can give the corresponding feedback of user with the form of pronunciation, reach the voice interaction between user and the equipment through speech recognition function and speech synthesis function; the infrared transmitting circuit and the infrared receiving circuit are arranged to control the electrical appliances such as televisions and air conditioners which are mainly operated by infrared rays.

Description

Voice control circuit

Technical Field

The utility model relates to a speech recognition technology field, in particular to voice control circuit.

Background

With the development of science and technology, the interaction mode of human and machine is also changing, and the mode that a user transmits a command to equipment is more and more humanized from the initial key to a touch screen to limb recognition and voice recognition. The device adopting the voice recognition as the man-machine interface has the advantages of simplicity, convenience, rapidness and flexibility, and can play a great role in the military, civil and commercial fields. The voice recognition technology is applied to the intelligent home system, so that the voice recognition technology can greatly facilitate the control of a user on electrical equipment in a home, and a more comfortable home life is created.

In recent years, as deep learning techniques in the field of machine learning are rapidly developed and speech data in big data are continuously and rapidly accumulated, the development speed of speech recognition techniques is greatly increased. As one of the most popular techniques, microsoft, google, apple and other technologies are developing their own voice recognition techniques, and products such as Siri, microsoft ice, Echo are well known. But domestic companies such as science news and news are all relaxed, and the research on voice recognition is actively carried out, so that the voice recognition achieves good results at present. The natural, convenient and natural characteristics of the voice recognition technology enable the voice recognition technology to have strong application potential in various industries, and with the development of technologies such as intelligent homes, intelligent automobiles, virtual/augmented reality and the like, the voice recognition plays a more important role.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problems that: a voice control circuit is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be:

a voice control circuit comprises a handheld end circuit, an infrared control end circuit and an electric gate end circuit, wherein the handheld end circuit is electrically connected with the infrared control end circuit, the handheld end circuit is electrically connected with the electric gate end circuit, and the infrared control end circuit is electrically connected with the electric gate end circuit through wireless serial port circuits;

the handheld end circuit comprises a first control circuit, a voice recognition circuit, a voice synthesis circuit, a first key circuit and a first power supply circuit, wherein the first control circuit is respectively and electrically connected with the voice recognition circuit, the voice synthesis circuit, the first key circuit and the first power supply circuit;

the infrared control end circuit comprises a second control circuit, an infrared receiving circuit, an infrared transmitting circuit, a second key circuit, a second power supply circuit and an OLED circuit, wherein the second control circuit is respectively and electrically connected with the infrared receiving circuit, the infrared transmitting circuit, the second key circuit, the second power supply circuit and the OLED circuit;

the electric brake end circuit comprises a third control circuit, a third key circuit, a third power supply circuit and a relay circuit, wherein the third control circuit is electrically connected with the third key circuit, the third power supply circuit and the relay circuit respectively.

Further, the voice synthesis circuit comprises a resistor R16, a resistor R22, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C10, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C17, a capacitor C18, a crystal oscillator Y2 and a chip U2;

a first pin of the chip U2 is electrically connected with one end of a capacitor C5, one end of a capacitor C4 and a power supply respectively, a second pin of the chip U2 is electrically connected with a third pin of the chip U2, the other end of the capacitor C5 and the other end of the capacitor C4 respectively, a second pin of the chip U2, a third pin of the chip U2, the other end of the capacitor C5 and the other end of the capacitor C4 are all grounded, a fourth pin of the chip U2 is electrically connected with one end of a capacitor C8 and the power supply respectively, a fifth pin of the chip U2 is electrically connected with the other end of the capacitor C8 and the fifth pin of the chip U2 and the other end of the capacitor C8 are all grounded, a sixth pin of the chip U2 is electrically connected with one end of a capacitor C10 and the power supply respectively, a seventh pin of the chip U2 is electrically connected with the other end of the capacitor C10 and the seventh pin of the chip U2 and the other end of the capacitor C10 are all grounded, and a ninth pin 2 of the chip U2 is, One end of a capacitor C13 is electrically connected with one end of a capacitor C12, a tenth pin of the chip U2 is electrically connected with the other end of the capacitor C13 and the other end of the capacitor C12 respectively, a tenth pin of the chip U2, the other end of the capacitor C13 and the other end of the capacitor C12 are all grounded, an eleventh pin of the chip U2 is electrically connected with one end of a capacitor C18, one end of a capacitor C17 and a power supply respectively, a twelfth pin of the chip U2 is electrically connected with the other end of a capacitor C18 and the other end of a capacitor C17 respectively, a twelfth pin of the chip U2, the other end of a capacitor C18 and the other end of a capacitor C17 are all grounded, a thirteenth pin of the chip U2 is electrically connected with one end of a capacitor C6 and a power supply respectively, a fourteenth pin of the chip U2 is electrically connected with a fifteenth pin of the chip U2, a sixteenth pin of the chip U2 and the other end of a capacitor C6 respectively, a fourteenth pin of the chip U2, The sixteenth pin of chip U2 and the other end of electric capacity C6 all ground connection, the seventeenth pin of chip U2 passes through resistance R16's power connection, chip U2's eighteenth pin is connected with one end of resistance R22, the one end and the power electricity of electric capacity C24 respectively, electric capacity C24's other end ground connection, chip U2's nineteenth pin is connected with the one end of crystal oscillator Y2 and the one end of electric capacity C14 electricity respectively, chip U2's twentieth pin is connected with the other end of crystal oscillator Y2 and the one end of electric capacity C19 electricity respectively, the other end of electric capacity C14 is connected with the other end of electric capacity C19 electricity and the other end of electric capacity C14 and the other end of electric capacity C19 all ground connection.

Further, still include triode inverter circuit, triode inverter circuit includes resistance R20, resistance R21, resistance R24 and triode Q7, resistance R20's one end is connected with the speech synthesis circuit electricity, resistance R20's the other end is connected with resistance R21's one end and triode Q7's collecting electrode electricity respectively, resistance R21's another termination power, triode Q7's base is connected with resistance R24's one end electricity, triode Q7's emitter ground, resistance R24's the other end is connected with first control circuit electricity.

Furthermore, the circuit structures of the first control circuit, the second control circuit and the third control circuit are the same, and the first control circuit comprises a resistor R10, a resistor R11, a capacitor C1, a capacitor C2, a capacitor C3, a crystal oscillator Y1, a switch RST and a chip U1;

a first pin of the chip U1 is electrically connected to one end of a capacitor C1, one end of a resistor R10 and one end of a resistor R11, the other end of the resistor R10 is electrically connected to one end of a switch RST, the other end of the switch RST is electrically connected to the other end of a capacitor C1, the other end of the switch RST and the other end of the capacitor C1 are both connected to a power supply, the other end of the resistor R11 is grounded, a second pin of the chip U1 is electrically connected to one end of a crystal oscillator Y1 and one end of a capacitor C2, a third pin of the chip U1 is electrically connected to the other end of the crystal oscillator Y1 and one end of a capacitor C3, the other end of the capacitor C2, the other end of a capacitor C3, a fourth pin of the chip U1 and a fifth pin of the chip U1 are both grounded, and the fifth pin of the chip U1 is.

Further, the infrared receiving circuit comprises a resistor R7, a resistor R8, a capacitor C26 and a chip U6, a first pin of the chip U6 is electrically connected with one end of the resistor R7 and one end of the capacitor C26 respectively, a second pin of the chip U6 is electrically connected with the other end of the capacitor C26, a second pin of the chip U6 and the other end of the capacitor C26 are both grounded, a third pin of the chip U6 is electrically connected with one end of a resistor R8 and the first control circuit respectively, the other end of the resistor R8 is electrically connected with the other end of the resistor R7, and the other end of the resistor R8 and the other end of the resistor R7 are both connected with the power supply.

Further, the infrared emission circuit comprises a first infrared emission sub-circuit and more than two second infrared emission sub-circuits, the first infrared emission circuit comprises a resistor R31, a resistor R32 and a triode Q6, the second infrared emission sub-circuit comprises a resistor R33, a resistor R34, an infrared emission diode LED4 and a triode Q1, one end of the resistor R31 is electrically connected with the base electrode of the triode Q6, the collector electrode of the triode Q6 is grounded, the emitter of the transistor Q6 is electrically connected to one end of the resistor R32 and one end of the resistor R33 respectively, the other end of the resistor R33 is electrically connected with the base electrode of a triode Q1, the emitter electrode of the triode Q1 is connected with a power supply, the collector of the triode Q1 is electrically connected with the anode of the infrared emitting diode LED4, the cathode of the infrared emitting diode LED4 is electrically connected with one end of the resistor R34, and the other end of the resistor R34 is grounded.

Further, the relay circuit comprises a resistor R29, a resistor R30, a light emitting diode LED3, a diode D3, a triode Q9, an optical coupler P2, a relay switch K1 and a connector J4;

a first pin of the optical coupler P2 is electrically connected with one end of a resistor R29, the other end of the resistor R29 is electrically connected with a power supply, a second pin of the optical coupler P2 is electrically connected with an anode of a light emitting diode LED3, a cathode of the light emitting diode LED3 is electrically connected with a first control circuit, a third pin of the optical coupler P2 is electrically connected with one end of a resistor R30, the other end of the resistor R30 is electrically connected with a base of a triode Q9, an emitter of the triode Q9 is grounded, a collector of the triode Q9 is electrically connected with an anode of a diode D3 and a fifth end of a relay switch K1, a fourth pin of the optical coupler P2 is electrically connected with a cathode of a diode D3, a fourth end of the relay switch K1 and the power supply, a first pin of the connector 37j 84 is electrically connected with a second end of the relay switch K1, and a second pin of the connector J4 is electrically connected with a third end of the relay K1, the third pin of the connector J4 is electrically connected with the first end of the relay switch K1.

Further, the wireless serial port circuit comprises a resistor R24, a resistor R27, a diode D2, a triode Q8 and a chip U7, wherein a first pin of the chip U7 is electrically connected with a second pin of the chip U7, the first pin of the chip U7 and the second pin of the chip U7 are both grounded, a third pin of the chip U7 is electrically connected with one end of the resistor 24 and an emitter of the triode Q8 respectively, a fourth pin of the chip U7 is electrically connected with a cathode of the diode D2, an anode of the diode D2 is electrically connected with a first control circuit, a fifth pin of the chip U7 is connected with a power supply, a sixth pin of the chip U7 is grounded, the other end of the resistor R24 is connected with the power supply, a collector of the triode Q8 is grounded, a base of the triode Q8 is electrically connected with one end of a resistor R27, and the other end of the resistor R27 is electrically connected with the first control circuit.

The beneficial effects of the utility model reside in that:

by arranging the voice recognition circuit and the voice synthesis circuit, after a voice instruction of a user is recognized, corresponding feedback can be given to the user in a voice mode, and voice interaction between the user and equipment is achieved through a voice recognition function and a voice synthesis function; the infrared transmitting circuit and the infrared receiving circuit are arranged to control the electrical appliances which are mainly operated by infrared rays, such as televisions and air conditioners; through setting up the relay circuit, go to the actuation or the disconnection of control contact through the on-state of coil, realized the effect of "undercurrent control heavy current", just can reach the control effect through the opening or the disconnection of power.

Drawings

Fig. 1 is an overall circuit block diagram of a voice control circuit according to the present invention;

fig. 2 is a schematic circuit diagram of a speech synthesis circuit of a speech control circuit according to the present invention;

fig. 3 is a schematic circuit diagram of a triode inverter circuit of a voice control circuit according to the present invention;

fig. 4 is a schematic circuit diagram of a first control circuit of a voice control circuit according to the present invention;

fig. 5 is a schematic circuit diagram of an infrared receiving circuit of a voice control circuit according to the present invention;

fig. 6 is a schematic circuit diagram of an infrared transmitting circuit of a voice control circuit according to the present invention;

fig. 7 is a schematic circuit diagram of a relay circuit of a voice control circuit according to the present invention;

fig. 8 is a schematic circuit diagram of a wireless serial port circuit of a voice control circuit according to the present invention;

fig. 9 is a schematic circuit diagram of an OLED circuit of a voice control circuit according to the present invention;

fig. 10 is a schematic circuit diagram of a first power circuit of a voice control circuit according to the present invention;

fig. 11 is a schematic circuit diagram of a voltage conversion circuit of a voice control circuit according to the present invention;

fig. 12 is a schematic circuit diagram of a voice recognition circuit of a voice control circuit according to the present invention;

description of reference numerals:

1. a handheld end circuit; 101. a first control circuit; 102. a voice recognition circuit; 103. a speech synthesis circuit; 104. a first key circuit; 105. a first power supply circuit;

2. an infrared control end circuit; 201. a second control circuit; 202. an infrared receiving circuit; 203. an infrared emission circuit; 204. a second key circuit; 205. an OLED circuit; 206. a second power supply circuit;

3. an electric gate circuit; 301. a third control circuit; 302. a relay circuit; 303. a third key circuit; 304. a third power supply circuit;

4. and the wireless serial port circuit.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1, the technical solution provided by the present invention is:

From the above description, the beneficial effects of the present invention are:

As can be seen from the above description, the six external power sources of the chip U2 are respectively filtered by the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C8, the capacitor C10, the capacitor C12, the capacitor C13, the capacitor C17, and the capacitor C18, so that the power source input to the chip is more pure and stable; the resistor R16 is a pull-up resistor required to be connected to the chip U2, the resistor R22 is a pull-up resistor of a pin in a U2 state of the chip, the capacitor C24 is used for pulling down the pin in the chip state at the moment of power-on, and the crystal oscillator Y1, the capacitor C14 and the capacitor C19 form an external high-speed clock circuit of the chip U2.

As can be seen from the above description, the resistor R20 and the resistor R24 are current-limiting resistors, the resistor R21 is a pull-up resistor, and when the pin of the first control circuit is low, the transistor Q7 is turned off, and the pin of the speech synthesis circuit is pulled high; when the pin of the first control circuit is high, the transistor Q7 is turned on, and the pin of the speech synthesis circuit is pulled low, thereby achieving the purpose of signal inversion.

It can be known from the above description that the resistor R10, the resistor R11, the capacitor C1, and the switch RST together form a reset circuit of the chip U1, where the resistor R11 is a pull-down resistor, and is used to ensure that the pin of the chip U1 is prevented from being reset at a low level at ordinary times, the capacitor C1 can pull up the pin of the chip U1 instantaneously at the time of power-up, so that the chip U1 is reset, the resistor R10 is a current-limiting resistor, and when the switch RST is pressed down, the pin of the chip U1 is pulled up, so that the chip U1 is reset, and the crystal oscillator Y1, the capacitor C1, and the capacitor C2 together form an external high-speed clock circuit of the chip U1.

As can be seen from the above description, the chip U6 is an integrated infrared receiving head, and a series of circuits such as infrared receiving, filtering, amplifying and the like are built in, so that the output electrical signal is more pure; the capacitor C1 is a filter capacitor and is used for keeping the power supply of the chip U6 stable; the resistor R7 is a current-limiting resistor and is used for avoiding the chip from being burnt out by generating overlarge current; the resistor R8 is a pull-up resistor, which pulls the signal pin high at ordinary times.

From the above description, the first infrared emission sub-circuit is used to amplify the current of the I/O port of the single chip, R32 and R31 are both current limiting resistors, when the I/O port outputs a low level, the transistor Q6 is turned on, at this time, the emitter of the transistor Q6 is turned on and pulled down, and a large current can be injected, the emitter of the transistor Q6 is connected to the current limiting resistor R33 on the base of the second infrared emission sub-circuit, the transistor Q1 of the second infrared emission sub-circuit is turned on, the current passes through the current limiting infrared emission diode and the current limiting resistor R34 to the ground, so that the infrared emission diode emits the infrared signal, and the other infrared emission sub-circuits are similar.

As can be seen from the above description, the relay circuit mainly includes an optical coupling isolation circuit and a relay driving circuit, when the I/O port of the single chip outputs a low level, a current passes through the current limiting resistor R29 to light the LED inside the optical coupler P2 and the LED3 outside the optical coupler P2, the output end of the optical coupler P2 is conducted, the current passes through the current limiting resistor R30 to enter the base of the triode Q9, the triode Q9 is conducted, and the relay coil is conducted, so that the first pin and the third pin of the optical coupler P2 are conducted; the diode D3 is a reverse protection circuit, and the reverse electromotive force generated when the coil is powered off is consumed by the diode, so that the damage to the superior device is avoided.

From the above description, when the TXD pin of the chip U1 of the first control circuit outputs a low level, the current passes through the current limiting resistor R24 and the resistor R27, the transistor Q8 is turned on, and the third pin of the chip U7 of the wireless serial port circuit is pulled down to ground; when the TXD pin of the chip U1 of the first control circuit outputs a high level, the triode Q8 is cut off, and the third pin of the chip U7 of the wireless serial port circuit is pulled up to 5V; when the fourth pin of the chip U7 of the wireless serial port circuit outputs a low level, the voltage of the RXD pin of the chip U1 of the first control circuit is clamped at 0.7V and is at a low level; when the fourth pin of the chip U7 of the wireless serial port circuit outputs a high level, the RXD pin of the chip U1 of the first control circuit is pulled to a high level by an internal pull-up resistor, so that the 3.3V first control circuit can communicate with the 5V wireless serial port circuit.

Referring to fig. 1 to 12, a first embodiment of the present invention is:

referring to fig. 1, a voice control circuit includes a handheld end circuit 1, an infrared control end circuit 2 and an electric gate end circuit 3, where the handheld end circuit 1 and the infrared control end circuit 2, the handheld end circuit 1 and the electric gate end circuit 3, and the infrared control end circuit 2 and the electric gate end circuit 3 are electrically connected through a wireless serial port circuit 4;

the handheld end circuit 1 comprises a first control circuit 101, a voice recognition circuit 102, a voice synthesis circuit 103, a first key circuit 104 and a first power supply circuit 105, wherein the first control circuit 101 is electrically connected with the voice recognition circuit 102, the voice synthesis circuit 103, the first key circuit 104 and the first power supply circuit 105 respectively;

the infrared control end circuit 2 comprises a second control circuit 201, an infrared receiving circuit 202, an infrared transmitting circuit 203, a second key circuit 204, a second power circuit 206 and an OLED circuit 205, wherein the second control circuit 201 is electrically connected with the infrared receiving circuit 202, the infrared transmitting circuit 203, the second key circuit 204, the second power circuit 206 and the OLED circuit 205 respectively;

the electric gate circuit 3 comprises a third control circuit 301, a third key circuit 303, a third power supply circuit 304 and a relay circuit 302, wherein the third control circuit 301 is electrically connected with the third key circuit 303, the third power supply circuit 304 and the relay circuit 302 respectively.

The handheld end circuit is mainly responsible for voice recognition and voice broadcast. When the equipment recognizes a control instruction (such as 'turning on the television') spoken by a user, the equipment outputs a voice prompt (such as 'turning on the television') through the voice synthesis circuit, and simultaneously sends a frame of data to the infrared control end equipment or the switch end through the wireless serial port circuit. In an actual use scene, a user may speak a control instruction inadvertently, which is likely to cause device false triggering. Therefore, the handheld end circuit has two operation modes: the automatic mode and the manual mode are switched by a dial switch on the first control circuit. When the device is in an automatic mode, the device has two-stage control instructions, and a user can issue the two-stage control instructions to control the electric appliance after passing the first-stage control instruction. If the user needs to turn on the television, a primary instruction (such as 'housekeeper') needs to be spoken, and a secondary instruction (such as 'turning on the television') is output after the user successfully identifies the television; when in the manual mode, the user can directly issue a secondary instruction after pressing a PTT (push to talk) key on the circuit.

The infrared control end circuit is mainly responsible for learning and sending infrared codes. When the MCU receives data from the wireless serial port circuit or detects that the 'transmitting' key of the second key circuit is pressed, the designated infrared code is sent through the infrared transmitting circuit, and therefore the purpose of controlling the household appliance is achieved. Because the manufacturers of household appliances are numerous, and the infrared codes used by various electric appliances are also very different, users need to input the infrared codes through the learning function of the equipment before using the infrared control end circuit to control the household appliances, and the specific method comprises the following steps: the learning key is pressed first, then the remote controller of the household appliance is aligned to the infrared receiving head, and then the key to be learned is pressed, the related codes are stored by the MCU, and the device can not be lost even if the device is changed.

The electric gate circuit is mainly responsible for controlling the power supply of the electric appliance. When the MCU receives data from the wireless serial port circuit or detects that a user sends a control instruction through the second key circuit, the power supply of the designated electric appliance is turned on or off through the relay circuit, and therefore the purpose of controlling the household electric appliance is achieved.

Referring to fig. 2, the speech synthesis circuit 103 includes a resistor R16 (with a resistance of 10K Ω), a resistor R22 (with a resistance of 1M Ω), a capacitor C4 (with a capacitance of 10uF), a capacitor C5 (with a capacitance of 0.1uF), a capacitor C6 (with a capacitance of 0.1uF), a capacitor C8 (with a capacitance of 0.1uF), a capacitor C10 (with a capacitance of 0.1uF), a capacitor C12 (with a capacitance of 10uF), a capacitor C13 (with a capacitance of 0.1uF), a capacitor C14 (with a capacitance of 20pF), a capacitor C17 (with a capacitance of 10uF), a capacitor C18 (with a capacitance of 0.1uF), a crystal Y2(3225 packaged chip passive chip, pfs 12 ppm, 16 MHz), and a chip U2 (model No. SYN 6288);

a first pin of the chip U2 is electrically connected with one end of a capacitor C5, one end of a capacitor C4 and a power supply respectively, a second pin of the chip U2 is electrically connected with a third pin of the chip U2, the other end of the capacitor C5 and the other end of the capacitor C4 respectively, a second pin of the chip U2, a third pin of the chip U2, the other end of the capacitor C5 and the other end of the capacitor C4 are all grounded, a fourth pin of the chip U2 is electrically connected with one end of a capacitor C8 and the power supply respectively, a fifth pin of the chip U2 is electrically connected with the other end of the capacitor C8 and the fifth pin of the chip U2 and the other end of the capacitor C8 are all grounded, a sixth pin of the chip U2 is electrically connected with the power supply of one end of a capacitor C10 respectively, a seventh pin of the chip U2 is electrically connected with the other end of a capacitor C10 and the seventh pin of the chip U2 and the other end of the capacitor C10 are all grounded, and a ninth pin 2 of the chip U2 is, One end of a capacitor C13 is electrically connected with one end of a capacitor C12, a tenth pin of the chip U2 is electrically connected with the other end of the capacitor C13 and the other end of the capacitor C12 respectively, a tenth pin of the chip U2, the other end of the capacitor C13 and the other end of the capacitor C12 are all grounded, an eleventh pin of the chip U2 is electrically connected with one end of a capacitor C18, one end of a capacitor C17 and a power supply respectively, a twelfth pin of the chip U2 is electrically connected with the other end of a capacitor C18 and the other end of a capacitor C17 respectively, a twelfth pin of the chip U2, the other end of a capacitor C18 and the other end of a capacitor C17 are all grounded, a thirteenth pin of the chip U2 is electrically connected with one end of a capacitor C6 and a power supply respectively, a fourteenth pin of the chip U2 is electrically connected with a fifteenth pin of the chip U2, a sixteenth pin of the chip U2 and the other end of a capacitor C6 respectively, a fourteenth pin of the chip U2, The sixteenth pin of chip U2 and the other end of electric capacity C6 all ground connection, the seventeenth pin of chip U2 passes through resistance R16's power connection, chip U2's eighteenth pin is connected with one end of resistance R22, the one end and the power electricity of electric capacity C24 respectively, electric capacity C24's other end ground connection, chip U2's nineteenth pin is connected with the one end of crystal oscillator Y2 and the one end of electric capacity C14 electricity respectively, chip U2's twentieth pin is connected with the other end of crystal oscillator Y2 and the one end of electric capacity C19 electricity respectively, the other end of electric capacity C14 is connected with the other end of electric capacity C19 electricity and the other end of electric capacity C14 and the other end of electric capacity C19 all ground connection.

The chip U2 with model number SYN6288 can communicate with the first control circuit 101 through an asynchronous serial port, receive text data to be synthesized sent by the chip in the first control circuit 101, and realize the conversion from text to sound, and is characterized in that:

(1) the chip supports the text of BIG5, GBK, GB2312 and UNICODE inner code format, and has better universality;

(2) through an internal processing algorithm, the chip can identify the number, the numerical value, the time and the date in the text to be synthesized;

(3) when the text is synthesized, the control mark can be used for improving the accuracy of the chip for processing data, so that the voice synthesis effect is more natural;

(4) and 16-level volume adjustment and 6-level speech rate adjustment are supported, and the method is suitable for various occasions.

In addition, the chip U2 with the model number of SYN6288 is also solidified with a plurality of words, string music and prompt tones, is convenient to use, has small volume and is beneficial to saving the area of a circuit board. Due to the characteristics, the chip U2 with the model number of SYN6288 has strong application capability and can be mainly applied to equipment such as queuing machines, vehicle-mounted navigation systems, bus stop reporting systems, attendance machines, intelligent instruments and meters, intelligent homes and the like. Because the chip U2 with the model number of SYN6288 has a plurality of groups of external power supplies, in order to eliminate the interference from the power supplies and ensure the stability of power supply, the design is connected with a capacitor in parallel on each group of power supplies.

Referring to fig. 3, the speech synthesizer further includes a triode inverter circuit, the triode inverter circuit includes a resistor R20 (with a resistance value of 0.51K Ω), a resistor R21 (with a resistance value of 1K Ω), a resistor R24 (with a resistance value of 1K Ω), and a triode Q7 (with a model number of J3Y, i.e., S8050), one end of the resistor R20 is electrically connected to the speech synthesis circuit 103, the other end of the resistor R20 is electrically connected to one end of the resistor R21 and a collector of the triode Q7, the other end of the resistor R21 is connected to a power supply, a base of the triode Q7 is electrically connected to one end of the resistor R24, an emitter of the triode Q7 is grounded, and the other end of the resistor R24 is electrically connected to the first control circuit.

Although the asynchronous serial port is used for communication between the chip U2 with the model number SYN6288 and the first control circuit 101, the received data must be in an inverted state, so a triode inverting circuit is added between the first control circuit 101 and the chip U2 with the model number SYN6288 for inverting the data sent by the upper computer.

Referring to fig. 4, the circuit structures of the first control circuit 101, the second control circuit 201, and the third control circuit 301 are the same, where the first control circuit 101 includes a resistor R10 (with a resistance of 1K Ω), a resistor R11 (with a resistance of 10K Ω), a capacitor C1 (with a capacitance of 10uF), a capacitor C2 (with a capacitance of 0.1uF), a capacitor C3 (with a capacitance of 0.1uF), a crystal Y1(49S type passive crystal, with a frequency of 22.1184MHz), a switch RST, and a chip U1 (with a model of STC12C5a16S 2);

Referring to fig. 5, the infrared receiving circuit 202 includes a resistor R7 (with a resistance of 100 Ω), a resistor R8 (with a resistance of 10K Ω), a capacitor C26 (with a capacitance of 10uF), and a chip U6 (with a model of HX1838), a first pin of the chip U6 is electrically connected to one end of the resistor R7 and one end of the capacitor C26, a second pin of the chip U6 is electrically connected to the other end of the capacitor C26, a second pin of the chip U6 and the other end of the capacitor C26 are both grounded, a third pin of the chip U6 is electrically connected to one end of the resistor R8 and the first control circuit 101, the other end of the resistor R8 is electrically connected to the other end of the resistor R7, and the other end of the resistor R8 and the other end of the resistor R7 are both connected to the power supply.

Referring to fig. 6, the ir emitting circuit 203 includes a first ir emitting sub-circuit and more than two second ir emitting sub-circuits, the first ir emitting sub-circuit 203 includes a resistor R31 (with a resistance value of 1K Ω), a resistor R32 (with a resistance value of 10K Ω) and a transistor Q6 (model 2TY, i.e., S8550), the second ir emitting sub-circuit includes a resistor R33 (with a resistance value of 1K Ω), a resistor R34 (with a resistance value of 20 Ω), an ir emitting diode LED4, and a transistor Q1 (model 2TY, i.e., S8550), one end of the resistor R31 is electrically connected to the base of a transistor Q6, the collector of the transistor Q6 is grounded, the emitter of the transistor Q6 is electrically connected to one end of the resistor R32 and one end of the resistor R33, the other end of the resistor R33 is electrically connected to the base of the transistor Q1, the emitter of the transistor Q1 is connected to a power source, the collector of the transistor Q1 is electrically connected to the anode 4, the cathode of the infrared emitting diode LED4 is electrically connected with one end of a resistor R34, and the other end of the resistor R34 is grounded.

The infrared emitting circuit 203 is mainly composed of a triode and an infrared emitting diode, the second control circuit 201 generates a modulated 38KHz signal, and the current is amplified through the triode, so that the infrared emitting diode is driven to emit the signal. In addition, in actual use, the electric appliances may be dispersed in various positions in a room, so that the design uses a plurality of infrared emitting diodes, and infrared signals can be emitted to various directions at the same time, thereby facilitating the use of users.

Referring to fig. 7, the relay circuit 302 includes a resistor R29 (with a resistance of 1K Ω), a resistor R30 (with a resistance of 1K Ω), a light emitting diode LED3 (packaged in 0805), a diode D3 (model SS34), a transistor Q9 (model J3Y, i.e., S8050), an optocoupler P2 (model PC817), a relay switch K1 (model JQC-3FF-S-Z, brand TONGLING), and a connector J4 (model KF 300);

a first pin of the optical coupler P2 is electrically connected to one end of a resistor R29, the other end of the resistor R29 is electrically connected to a power supply, a second pin of the optical coupler P2 is electrically connected to an anode of a light emitting diode LED3, a cathode of the light emitting diode LED3 is electrically connected to the first control circuit 101, a third pin of the optical coupler P2 is electrically connected to one end of the resistor R30, the other end of the resistor R30 is electrically connected to a base of a transistor Q9, an emitter of the transistor Q9 is grounded, a collector of the transistor Q9 is electrically connected to an anode of a diode D3 and a fifth end of a relay switch K1, a fourth pin of the optical coupler P2 is electrically connected to a cathode of a diode D3, a fourth end of the relay switch K1 and the power supply, a first pin of the J4 is electrically connected to a second end of the relay switch K1, and a second pin of the connector J4 is electrically connected to a third end of the relay switch K1, the third pin of the connector J4 is electrically connected with the first end of the relay switch K1.

Referring to fig. 8, the wireless serial port circuit 4 includes a resistor R24 (with a resistance of 4.7K Ω), a resistor R27 (with a resistance of 1K Ω), a diode D2 (with a model of SS14), a transistor Q8 (with a model of 2TY, i.e., S8550), and a chip U7 (with a model of E32-TTL-100), the first pin of the chip U7 is electrically connected to the second pin of the chip U7, the first pin of the chip U7 and the second pin of the chip U7 are both grounded, the third pin of the chip U7 is electrically connected to one end of the resistor 24 and the emitter of the transistor Q8, the fourth pin of the chip U7 is electrically connected to the cathode of the diode D2, the anode of the diode D2 is electrically connected to the first control circuit 101, the fifth pin of the chip U7 is powered, the sixth pin of the chip U7 is grounded, the other end of the resistor R24 is powered, and the collector of the transistor Q8 is grounded, the base of the triode Q8 is electrically connected with one end of a resistor R27, and the other end of the resistor R27 is electrically connected with the first control circuit 101.

The voice recognition circuit includes a connector J5, a connector J6, a connector J7, a chip U7, a resistor R17, and a light emitting diode LED3, and the specific connection relationship among the components is shown in fig. 12.

The chip U7 is a voice recognition module LDV7 produced by the flying sound cloud electronic technology limited company, an onboard LD3320 unspecified human voice recognition chip and an STC11L08XE single chip microcomputer, and is used for voice recognition and logic processing; the connector J5, the connector J6 and the connector J7 are all single-row nuts with the distance of 2.54mm and are used for fixing a chip U7; a light emitting diode LED3 (package 0805) for indicating the operating status of the device; the resistor R17 is a current limiting resistor of 1k Ω for limiting the current flowing through the LED 3.

The design uses an E32-TTL-100 module of Chengdu Baite electronics technology Limited company as a wireless communication scheme among nodes, the E32-TTL-100 module is a wireless serial port circuit 4 with the power of 100mW, the working frequency range is 410MHz to 441MHz, and transparent transmission of data can be realized. It should be noted that, in the present design, the E32-TTL-100 module operates at 5V, but the chip U1 in the first control circuit 101 at the handheld terminal operates at 3.3V, and a voltage conversion circuit is required to be added to avoid the influence of the 5V voltage on the U1I/O port, please refer to fig. 11. The principle of the voltage conversion circuit is as follows: for the TXD of the control circuit, when a low level is output, the transistor Q8 is turned on, and the RXD of the wireless serial port circuit 4 reads the low level, otherwise, the transistor Q8 is turned off, and the RXD of the wireless serial port circuit 4 is pulled to the high level by the resistor; when the output of the TXD end of the wireless serial port circuit 4 is at a high level, the RXD pin end of the control circuit is pulled to a high level by the internal pull-up resistor. On the contrary, the voltage of the RXD pin end of the chip of the control circuit is clamped at 0.7V (related to the type of the diode) and is in a low level; the voltage value output by the circuit can be changed by adjusting the values of the resistor R6 and the resistor R7, when 5V voltage needs to be output, the resistor R6 selects the resistance value of 73.2K omega, and the resistor R7 selects the resistance value of 10K omega.

The OLED circuit 205 includes a chip U8 (0.96 inch SPI interface OLED panel), and reference is made to fig. 9 for the specific connection relationship between the pins of the chip U8.

The circuit structures of the first power circuit 105, the second power circuit 206, and the third power circuit 304 are the same, the first power circuit 105 includes a resistor R1 (with a resistance value of 0.4 Ω), a resistor R3 (with a resistance value of 1K Ω), a resistor R4 (with a resistance value of 1K Ω), a resistor Rp (with a resistance value of 1.5K Ω), a capacitor C20 (with a capacitance value of 10uF), a capacitor C21 (with a capacitance value of 0.1uF), a capacitor C22 (with a capacitance value of 10uF), a capacitor C23 (with a capacitance value of 0.1uF), a light emitting diode LED1 (with a package of 0805), a light emitting diode LED2 (with a package of 0805), a connector J1 (with a model of Micro USB 5P), a connector J2 (with a model of XH2.5422P), and a chip U3 (with a model of 4056), and specific connection relationships among components of the power circuit structure refer to fig. 10.

The thermal feedback function of the chip U3 with the model number TP4056 enables the chip U3 to automatically adjust the charging current during charging, so that the temperature of the chip can be effectively controlled under the condition of large-current charging, and the chip is prevented from being damaged due to self overheating. Different charging currents can be set by changing the resistance value of the resistor Rp, the maximum charging current can reach 1A, and designers can conveniently set the charging currents according to different application scenes. When the chip U3 with the model TP4056 detects that the charger is removed, the chip automatically enters a low-current state, the leakage current of the battery can be controlled below 2uA, the waste of electric energy is avoided, and the standby time of the equipment is prolonged.

To sum up, the utility model provides a voice control circuit, through setting up speech recognition circuit and speech synthesis circuit, after discerning user's voice command, can give the user corresponding feedback with the form of pronunciation, reach the voice interaction between user and the equipment through speech recognition function and speech synthesis function; the infrared transmitting circuit and the infrared receiving circuit are arranged to control the electrical appliances which are mainly operated by infrared rays, such as televisions and air conditioners; through setting up the relay circuit, go to the actuation or the disconnection of control contact through the on-state of coil, realized the effect of "undercurrent control heavy current", just can reach the control effect through the opening or the disconnection of power.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. A voice control circuit is characterized by comprising a handheld end circuit, an infrared control end circuit and an electric gate end circuit, wherein the handheld end circuit and the infrared control end circuit, the handheld end circuit and the electric gate end circuit and the infrared control end circuit and the electric gate end circuit are electrically connected through wireless serial port circuits;

2. The voice control circuit of claim 1, wherein the voice synthesis circuit comprises a resistor R16, a resistor R22, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C10, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C17, a capacitor C18, a crystal Y2, and a chip U2;

3. The voice control circuit according to claim 2, further comprising a triode inverter circuit, wherein the triode inverter circuit comprises a resistor R20, a resistor R21, a resistor R24 and a triode Q7, one end of the resistor R20 is electrically connected to the voice synthesis circuit, the other end of the resistor R20 is electrically connected to one end of a resistor R21 and a collector of the triode Q7, the other end of the resistor R21 is connected to the power supply, a base of the triode Q7 is electrically connected to one end of the resistor R24, an emitter of the triode Q7 is grounded, and the other end of the resistor R24 is electrically connected to the first control circuit.

4. The voice control circuit according to claim 1, wherein the circuit structures of the first control circuit, the second control circuit and the third control circuit are the same, and the first control circuit comprises a resistor R10, a resistor R11, a capacitor C1, a capacitor C2, a capacitor C3, a crystal oscillator Y1, a switch RST and a chip U1;

5. The voice control circuit of claim 1, wherein the infrared receiving circuit comprises a resistor R7, a resistor R8, a capacitor C26 and a chip U6, a first pin of the chip U6 is electrically connected with one end of the resistor R7 and one end of the capacitor C26, a second pin of the chip U6 is electrically connected with the other end of the capacitor C26, the second pin of the chip U6 and the other end of the capacitor C26 are both grounded, a third pin of the chip U6 is electrically connected with one end of the resistor R8 and the first control circuit, the other end of the resistor R8 is electrically connected with the other end of the resistor R7, and the other end of the resistor R8 and the other end of the resistor R7 are both powered.

6. The voice control circuit of claim 1, wherein the infrared emission circuit comprises a first infrared emission sub-circuit and more than two second infrared emission sub-circuits, the first infrared emission sub-circuit comprises a resistor R31, a resistor R32 and a transistor Q6, the second infrared emission sub-circuit comprises a resistor R33, a resistor R34, an infrared emission diode LED4 and a transistor Q1, one end of the resistor R31 is electrically connected with a base of the transistor Q6, a collector of the transistor Q6 is grounded, an emitter of the transistor Q6 is electrically connected with one end of the resistor R32 and one end of the resistor R33, respectively, the other end of the resistor R33 is electrically connected with a base of the transistor Q1, an emitter of the transistor Q1 is electrically connected with a power supply, a collector of the transistor Q1 is electrically connected with an anode of an infrared emission diode LED4, a cathode of the infrared emission diode LED4 is electrically connected with one end of a resistor R34, the other end of the resistor R34 is grounded.

7. The voice control circuit of claim 1, wherein the relay circuit comprises a resistor R29, a resistor R30, a light emitting diode LED3, a diode D3, a transistor Q9, an optocoupler P2, a relay switch K1, and a connector J4;

8. The voice control circuit of claim 1, wherein the wireless serial port circuit comprises a resistor R24, a resistor R27, a diode D2, a transistor Q8, and a chip U7, the first pin of the chip U7 is electrically connected to the second pin of the chip U7 and the first pin of the chip U7 and the second pin of the chip U7 are both grounded, the third pin of the chip U7 is electrically connected to one end of the resistor 24 and the emitter of the transistor Q8, the fourth pin of the chip U7 is electrically connected to the cathode of the diode D2, the anode of the diode D2 is electrically connected to the first control circuit, the fifth pin of the chip U7 is connected with a power supply, the sixth pin of the chip U7 is grounded, the other end of the resistor R24 is connected with the power supply, the collector of the triode Q8 is grounded, the base of the triode Q8 is electrically connected with one end of a resistor R27, and the other end of the resistor R27 is electrically connected with a first control circuit.