CN110062308B - Induction control sound box system - Google Patents
Induction control sound box system Download PDFInfo
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- CN110062308B CN110062308B CN201810051353.2A CN201810051353A CN110062308B CN 110062308 B CN110062308 B CN 110062308B CN 201810051353 A CN201810051353 A CN 201810051353A CN 110062308 B CN110062308 B CN 110062308B
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- 230000006698 induction Effects 0.000 title claims abstract description 55
- 230000005236 sound signal Effects 0.000 claims abstract description 20
- 230000003321 amplification Effects 0.000 claims abstract description 12
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 43
- 230000033001 locomotion Effects 0.000 claims description 16
- 230000003071 parasitic effect Effects 0.000 claims description 9
- 238000013459 approach Methods 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 claims description 4
- 230000001934 delay Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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Abstract
The invention discloses an induction control sound box system, which relates to the field of sound boxes and comprises a human body induction module, an MCU main control unit, a power supply electronic switch circuit, a switch control circuit, a level control circuit, a voltage stabilizing circuit, a power amplification unit, a first port and a second port; the human body induction module is respectively connected with the switch control circuit and the MCU main control unit, the MCU main control unit is connected with the level control circuit, the level control circuit is connected with the switch control circuit, the switch control circuit is connected with the power electronic switch circuit, the first port is used for inputting a power supply, the power supply is input into the human body induction module and the power electronic switch circuit, the second port is used for inputting an audio signal, and the audio signal is output to the loudspeaker for playing after being amplified by the power amplification unit. The scheme provided by the embodiment of the invention adopts a human body induction technology, replaces the traditional key on/off mode, and greatly improves the flexibility of the overall design of the loudspeaker box and the user experience.
Description
Technical Field
The invention relates to the field of sound boxes, in particular to an induction control sound box system.
Background
The sound box is a device for converting an audio signal into sound, so that the performance of the sound box directly influences the quality of the sound quality of the played sound; the variety of the sound box is various, and the requirements of various occasions can be basically met.
At present, a start-up key and a shutdown key are added on a box body of the sound box equipment to realize the start-up and shutdown of the sound box equipment, and people often feel tired in starting the sound box equipment through the start-up key or forget to turn off the sound box equipment when leaving, so that energy waste can be caused; and the on-off key is added on the box body, so that the appearance of the box body is also lack of appreciation and interestingness, and the increasing aesthetic requirements and diversified requirements of people cannot be met.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, provides an induction control sound box system, and solves the problem that the existing sound box equipment can only be powered on or powered off by adding a power on or off key on a box body.
In order to solve the problems, the invention adopts the following technical scheme:
the invention provides an induction control sound box system, which comprises a human body induction module, an MCU main control unit, a power supply electronic switch circuit, a switch control circuit, a level control circuit, a voltage stabilizing circuit, a power amplification unit, a first port and a second port;
the human body induction module is respectively connected with the switch control circuit and the MCU main control unit, the MCU main control unit is connected with the level control circuit, the level control circuit is connected with the switch control circuit, and the switch control circuit is connected with the power supply electronic switch circuit; the human body induction module is used for inducing and capturing signals of human body movement and transmitting the signals to the switch control circuit and the MCU main control unit respectively, the switch control circuit is used for receiving the signals and controlling the on or off of the power electronic switch circuit according to the signals, the MCU main control unit is used for receiving the signals and carrying out time delay processing on the signals and then transmitting the signals to the level control circuit, and the level control circuit is used for keeping the on or off working state of the power electronic switch circuit and controlling the on or off of the power electronic switch circuit in a time delay manner;
the first port is used for inputting a power supply, and inputting the power supply into the human body induction module and the power supply electronic switch circuit respectively, the power supply electronic switch circuit is connected with the MCU main control unit through the voltage stabilizing circuit, and the power supply electronic switch circuit is connected with the power amplifier unit;
the second port is used for inputting an audio signal, inputting the audio signal to the power amplification unit, and the power amplification unit is used for amplifying the audio signal and outputting the audio signal to a loudspeaker for playing.
As a further improvement of the invention, the signal of human motion specifically comprises: a first signal of human body approach and a second signal of human body departure.
As a further improvement of the invention, the power supply electronic switching circuit comprises a MOS tube Q1, a resistor R3 and a capacitor C4, wherein the resistor R3 and the capacitor C4 are used for providing bias voltage for the MOS tube Q1;
pins 1-3 of the MOS tube Q1 are connected together and then connected with one end of the capacitor C4 and one end of the resistor R3 respectively, and the first port is connected with one end of the resistor R3; the other end of the capacitor C4 and the other end of the resistor R3 are connected together and connected to the pin 4 of the MOS tube Q1, the pin 4 of the MOS tube Q1 is respectively connected with the switch control circuit and the level control circuit, and the pins 5-8 of the MOS tube Q1 are respectively connected with the voltage stabilizing circuit and the power amplifier unit after being connected together.
As a further improvement of the invention, the power electronic switching circuit further comprises a parasitic diode D1 for protecting the MOS transistor Q1, wherein two ends of the parasitic diode D1 are respectively connected with the drain electrode and the source electrode of the MOS transistor Q1.
As a further improvement of the invention, the switch control circuit comprises a triode Q2, a resistor R108 and a resistor R243 for dividing voltage and a capacitor C89 for removing pulse interference signals;
the pin 1 of the triode Q2 is respectively connected with the capacitor C89, the resistor R243 and one end of the resistor R108, and the other end of the resistor R108 is connected with the human body induction module; the pin 2 of the triode Q2 is connected to the capacitor C89 and the other end of the resistor R243, respectively, and the other end of the resistor R243 is grounded.
As a further improvement of the invention, the switch control circuit further comprises a resistor R6 for providing a starting voltage for the power supply electronic switch circuit, and two ends of the resistor R6 are respectively connected with the pin 3 of the triode Q2 and the power supply electronic switch circuit.
As a further improvement of the invention, the level control circuit comprises a triode Q3, a resistor R2 and a resistor R4 for dividing voltage and a capacitor C1 for removing pulse interference signals;
the pin 1 of the triode Q3 is respectively connected with the capacitor C1, the resistor R4 and one end of the resistor R2, and the other end of the resistor R2 is connected with the MCU main control unit; the pin 2 of the triode Q3 is respectively connected with the capacitor C1 and the other end of the resistor R4, and the other end of the resistor R4 is grounded.
As a further improvement of the invention, the level control circuit further comprises a resistor R1 for controlling the power electronic switching circuit, wherein two ends of the resistor R1 are respectively connected with a pin 3 of the triode Q3 and the power electronic switching circuit.
As a further improvement of the invention, the pin 1 of the human body induction module is connected with the first port and is used for inputting a power supply; the pin 2 of the human body induction module is respectively connected with the switch control circuit and the MCU main control unit and is used for respectively transmitting signals for inducing and capturing human body movement by the human body induction module to the switch control circuit and the MCU main control unit; and the pin 3 of the human body induction module is grounded.
As a further improvement of the invention, a resistor R5 and a resistor R7 for dividing voltage and a capacitor C2 for removing pulse interference signals are arranged between the pin 2 of the human body induction module and the MCU main control unit;
the pin 2 of the human body induction module is connected with one end of the resistor R5, the other end of the resistor R5 is respectively connected with one end of the capacitor C2 and one end of the resistor R7, and the MCU main control unit is connected with one end of the resistor R7; the other end of the capacitor C2 is connected with the other end of the resistor R7, and the other end of the resistor R7 is grounded.
Compared with the prior art, the invention has the beneficial effects that:
in the embodiment of the invention, the first port inputs a power supply and respectively inputs the power supply to the human body induction module and the power supply electronic switch circuit, the induction control sound box system senses and captures signals of human body movement through the human body induction module and respectively transmits the signals to the switch control circuit and the MCU main control unit, the switch control circuit controls the working state of the power supply electronic switch circuit according to the signals, the MCU main control unit delays the signals and then transmits the signals to the level control circuit, and the level control circuit keeps the working state of the power supply electronic switch circuit which is switched on or switched off; at this time, when the power electronic switch circuit is in a conducting working state, the audio signal input by the second port is amplified by the power amplification unit and then output to the loudspeaker for playing, namely, the starting-up of the sound box equipment is realized; when the power electronic switch circuit is in a cut-off working state, the power amplifier unit cannot work normally, namely, the shutdown of the sound box equipment is realized. The scheme provided by the embodiment of the invention adopts a human body induction technology, replaces the traditional key on/off mode, and greatly improves the flexibility of the overall design of the loudspeaker box and the user experience.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of an induction control speaker system according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an induction control speaker system according to an embodiment of the invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, a schematic block diagram of an induction control sound box system according to an embodiment of the present invention includes a human body induction module 10, an MCU main control unit 20, a power electronic switch circuit 30, a switch control circuit 40, a level control circuit 50, a voltage stabilizing circuit 60, a power amplifying unit 70, a first port 80 and a second port 90.
In the embodiment of the present invention, the human body sensing module 10 is respectively connected with the switch control circuit 40 and the MCU main control unit 20, the MCU main control unit 20 is connected with the level control circuit 50, the level control circuit 50 is connected with the switch control circuit 40, and the switch control circuit 40 is connected with the power electronic switch circuit 30; the human body sensing module 10 is configured to sense and capture a signal of a human body motion, and transmit the signal to the switch control circuit 40 and the MCU main control unit 20, where the switch control circuit 40 is configured to receive the signal and control on or off of the power electronic switch circuit 30 according to the signal, the MCU main control unit 20 is configured to receive the signal and delay the signal, and transmit the signal to the level control circuit 50, and the level control circuit 50 is configured to maintain an on or off working state of the power electronic switch circuit 30 and delay and control on or off of the power electronic switch circuit 30. In this embodiment, when the power electronic switch circuit 30 is in a conductive working state, the first port 80 is used for inputting power and inputting power into the body sensing module 10 and the power electronic switch circuit 30 respectively, the power electronic switch circuit 30 is connected with the MCU main control unit 20 through the voltage stabilizing circuit 60, and the power electronic switch circuit 30 is connected with the power amplifier unit 70, that is, the power electronic switch circuit 30 is used for controlling power input of the MCU main control unit 20 and the power amplifier unit 70; at this time, the second port 90 is used for inputting an audio signal, inputting the audio signal to the power amplification unit 70, and the power amplification unit 70 is used for amplifying the audio signal and outputting the audio signal to a speaker for playing.
In an embodiment of the present invention, the signals used by the human body sensing module 10 to sense and capture the motion of the human body include a first signal that the human body approaches and a second signal that the human body leaves. Specifically, when the signal identified by the body sensing module 10 is a first signal, the switch control circuit 40 controls the power electronic switch circuit 30 to be turned on according to the first signal, the MCU main control unit 20 delays the first signal and transmits the first signal to the level control circuit 50, the level control circuit 50 maintains the on state of the power electronic switch circuit 30 and delays the power electronic switch circuit 30 to be turned on after receiving the first signal, at this time, the audio signal input by the second port 90 is amplified by the power amplification unit 70 and then is output to the speaker to be played, so as to realize the startup of the speaker device; when the signal identified by the body sensing module 10 is the second signal, the switch control circuit 40 controls the power electronic switch circuit 30 to be turned off according to the second signal, the MCU master control unit 20 delays the second signal and transmits the second signal to the level control circuit 50, the level control circuit 50 receives the processed second signal and then maintains the off state of the power electronic switch circuit 30, at this time, the power amplifier unit 70 cannot work normally, that is, the power amplifier unit 70 cannot amplify the audio signal input by the second port 90 and then output the amplified audio signal to the speaker for playing, thereby realizing shutdown of the speaker device.
Referring to fig. 2, a schematic circuit diagram of the induction control speaker system according to an embodiment of the invention is shown, and the power electronic switch circuit 30 includes a MOS transistor Q1, and a resistor R3 and a capacitor C4 for providing bias voltage to the MOS transistor Q1.
Pins 1-3 of the MOS transistor Q1 are connected together and then connected to one end of the capacitor C4 and one end of the resistor R3, respectively, and the first port 80 is connected to one end of the resistor R3, in this embodiment, the first port 80 is a power input port, and a power is input into the power electronic switch circuit 30 via the first port 80; the other ends of the capacitor C4 and the resistor R3 are connected together and connected to the pin 4 of the MOS tube Q1, the pin 4 of the MOS tube Q1 is respectively connected with the switch control circuit 40 and the level control circuit 50, and the pins 5-8 of the MOS tube Q1 are respectively connected with the voltage stabilizing circuit 60 and the power amplifier unit 70 after being connected together.
In this embodiment, the switch control circuit 40 is specifically configured to control the off or on state of the MOS transistor Q1, and the level control circuit 50 is specifically configured to maintain the current state of the MOS transistor Q1. Specifically, when the body sensing module 10 senses and captures a first signal that a human body approaches, the switch control circuit 40 controls the MOS transistor Q1 to make the MOS transistor Q1 be in a conductive state, and the level control circuit 50 maintains the conductive state of the MOS transistor Q1; when the body sensing module 10 senses and captures a second signal indicating that the body is away, the switch control circuit 40 controls the MOS transistor Q1 to make the MOS transistor Q1 in an off state, and the level control circuit 50 maintains the off state of the MOS transistor Q1.
In the embodiment of the present invention, the power electronic switch circuit 30 further includes a parasitic diode D1 for protecting the MOS transistor Q1, two ends of the parasitic diode D1 are respectively connected with the drain and the source of the MOS transistor Q1, one end where the pin 5-8 of the MOS transistor Q1 is located is the drain of the MOS transistor Q1, one end where the pin 1-3 of the MOS transistor Q1 is located is the source of the MOS transistor Q1, that is, the positive electrode of the parasitic diode D1 is connected to one end where the pins 5-8 of the MOS transistor Q1 are commonly connected, and the negative electrode of the parasitic diode D1 is connected to one end where the pins 1-3 of the MOS transistor Q1 are commonly connected. Specifically, when a large instantaneous reverse current is generated in the circuit of the power electronic switching circuit 30, the parasitic diode D1 may be used to guide out the current, so that the MOS transistor Q1 is not broken down, thereby playing a role in protecting Q1.
As a preferable scheme of the embodiment of the invention, the resistor R3 is 100 kiloohms, the capacitor C4 is 1 micro-farad, and the MOS transistor Q1 is a P-channel MOS transistor.
In the embodiment of the present invention, the switch control circuit 40 includes a transistor Q2, a resistor R108 and a resistor R243 for dividing voltage, and a capacitor C89 for removing pulse interference signals; the pin 1 of the triode Q2 is respectively connected with the capacitor C89, the resistor R243 and one end of the resistor R108, and the other end of the resistor R108 is connected with the human body induction module 10; the pin 2 of the triode Q2 is connected to the capacitor C89 and the other end of the resistor R243, respectively, and the other end of the resistor R243 is grounded.
In this embodiment, the human body sensing module 10 transmits a first signal for sensing and capturing approach of a human body or a second signal for capturing departure of the human body to the switch control circuit 40, and the switch control circuit 40 sets the on or off operation state of the transistor Q2 according to the first signal or the second signal. Specifically, when the signal received by the switch control circuit 40 is the first signal, the transistor Q2 is set to be in a conducting state, and at this time, the power electronic switch circuit 30 is also in a conducting working state due to the conduction of the transistor Q2; when the signal received by the switch control circuit 40 is the second signal, the transistor Q2 is set to be in the off state, and at this time, the power electronic switch circuit 30 is also in the off state due to the off state of the transistor Q2.
In the embodiment of the present invention, the switch control circuit 40 further includes a resistor R6 for providing a starting voltage to the power electronic switch circuit 30, where two ends of the resistor R6 are respectively connected to the pin 3 of the triode Q2 and the power electronic switch circuit 30, so that when the triode Q2 of the switch control circuit 40 transmits a signal to the MOS transistor Q1 of the power electronic switch circuit 30, the MOS transistor Q1 is prevented from being broken down due to instantaneous strong current, and the signal transmission is more stable.
As a preferable scheme of the embodiment of the invention, the resistor R108 and the resistor R243 are 47 kiloohms, the resistor R6 is 10 kiloohms, and the capacitor C89 is 1000 picofarads.
In the embodiment of the present invention, the level control circuit 50 includes a transistor Q3, a resistor R2 and a resistor R4 for dividing voltage, and a capacitor C1 for removing a pulse interference signal; the pin 1 of the triode Q3 is respectively connected with the capacitor C1, the resistor R4 and one end of the resistor R2, and the other end of the resistor R2 is connected with the MCU main control unit 20; the pin 2 of the triode Q3 is respectively connected with the capacitor C1 and the other end of the resistor R4, and the other end of the resistor R4 is grounded.
In this embodiment, the human body sensing module 10 transmits a first signal that senses and captures approach of a human body or a second signal that captures departure of the human body to the MCU main control unit 20, the MCU main control unit 20 receives the first signal or the second signal, delays the first signal or the second signal, and transmits the delayed first signal or the delayed second signal to the level control circuit 50, and the level control circuit 50 sets the on or off working state of the triode Q3 according to the signal transmitted by the MCU main control unit 20. Specifically, when the level control circuit 50 receives that the signal transmitted by the MCU main control unit 20 is the first signal, the transistor Q3 is set to be in a conducting state; when the level control circuit 50 receives the signal transmitted by the MCU master control unit 20 as the second signal, the transistor Q3 is set to be in the off state.
In the embodiment of the present invention, the level control circuit 50 further includes a resistor R1 for controlling the power electronic switching circuit 30, where two ends of the resistor R1 are respectively connected to the pin 3 of the triode Q3 and the power electronic switching circuit 30, so that when the triode Q3 of the level control circuit 50 transmits a signal to the MOS transistor Q1 of the power electronic switching circuit 30, the MOS transistor Q1 is prevented from being broken down due to instantaneous strong current, and the signal transmission is more stable.
As a preferable scheme of the embodiment of the invention, the resistor R2 and the resistor R4 are 47 kiloohms, the resistor R1 is 10 kiloohms, and the capacitor C1 is 1000 picofarads.
In the embodiment of the invention, the pin 1 of the human body induction module 10 is a power input end, the pin 2 of the human body induction module 10 is a signal output end, and the pin 3 of the human body induction module 10 is a grounding end; specifically, the pin 1 of the body sensing module 10 is connected to the first port 80, and is used for inputting a power supply; the pin 2 of the human body sensing module 10 is respectively connected with the switch control circuit 40 and the MCU main control unit 20, and is used for respectively transmitting signals for sensing and capturing human body movement of the human body sensing module 10 to the switch control circuit 40 and the MCU main control unit 20; the pin 3 of the human body induction module 10 is grounded. However, in one or more possible embodiments, the body sensing module 10 may sense and capture signals of the movement of a movable object, such as a cat, a dog, etc., but the body sensing module 10 is more sensitive to the movement of a human body, i.e., the body sensing module 10 of the present embodiment is easier to sense and capture signals of the movement of a human body. Further, in some embodiments, the human body sensing module 10 may be a human body sensing sensor, or may be an infrared sensor, etc.; of course, the body sensing module 10 may also be other devices that can sense and capture signals of the movement of the movable object, and those skilled in the art will understand that other devices that can sense and capture signals of the movement of the movable object are also within the scope of the body sensing module 10 of the present embodiment.
In the embodiment of the present invention, a resistor R5 and a resistor R7 for dividing voltage and a capacitor C2 for removing pulse interference signals are arranged between the pin 2 of the human body sensing module 10 and the MCU main control unit 20; the pin 2 of the human body induction module 10 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with one end of the capacitor C2 and one end of the resistor R7 respectively, and the MCU main control unit 20 is connected with one end of the resistor R7; the other end of the capacitor C2 is connected with the other end of the resistor R7, and the other end of the resistor R7 is grounded. Specifically, the human body sensing module 10 transmits the sensed and captured first signal or second signal to the resistor R5 and the resistor R7, divides the voltage through the resistor R5 and the resistor R7, filters the interference signal contained in the signal through the capacitor C2, and transmits the filtered signal to the MCU main control unit 20, and the MCU main control unit 20 receives the processed signal, delays the signal, and transmits the delayed signal to the level control circuit 50. In addition, when the power electronic switch circuit 30 is turned on, power is input to the voltage stabilizing circuit 60 from the first port 80, and is input to the MCU main control unit 20 after being stabilized by the voltage stabilizing circuit 60, so as to ensure the stability of the power of the MCU main control unit 20, so that the MCU main control unit 20 can work normally.
As a preferable scheme of the embodiment of the invention, the resistor R5 and the resistor R7 are both 47 kiloohms, and the capacitor C2 is 1000 picofarads.
In the embodiment of the present invention, the first port 80 inputs a power supply and inputs the power supply to the human body sensing module 10 and the power supply electronic switch circuit 30 respectively, the sensing control sound box system senses and captures a signal of human body movement through the human body sensing module 10, and transmits the signal to the switch control circuit 40 and the MCU main control unit 20 respectively, the switch control circuit 40 controls the on or off working state of the power supply electronic switch circuit 30 according to the signal, the MCU main control unit 20 delays the signal and transmits the signal to the level control circuit 50, and the level control circuit 50 maintains the on or off working state of the power supply electronic switch circuit 30; at this time, when the power electronic switch circuit 30 is in the on state, the audio signal input by the second port 90 is amplified by the power amplifying unit 70 and then output to the speaker for playing, that is, the startup of the speaker device is achieved; when the power electronic switch circuit 30 is in the off state, the power amplifier unit 70 cannot work normally, i.e. the power off of the speaker device is realized. The scheme provided by the embodiment of the invention adopts a human body induction technology, replaces the traditional key on/off mode, and greatly improves the flexibility of the overall design of the loudspeaker box and the user experience.
In this embodiment, it will be understood by those skilled in the art that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that elements are not expressly listed but may include other elements not; the terms front, rear, upper, lower, etc. are defined by the positions of the structures in the drawings and the structures relative to each other, only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the protection sought herein.
The technical features of the above-described embodiments may be arbitrarily combined, and for brevity of description, all of the possible combinations of the technical features of the above-described embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be regarded as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. The induction control sound box system is characterized by comprising a human body induction module, an MCU main control unit, a power supply electronic switch circuit, a switch control circuit, a level control circuit, a voltage stabilizing circuit, a power amplification unit, a first port and a second port;
the human body induction module is respectively connected with the switch control circuit and the MCU main control unit, the MCU main control unit is connected with the level control circuit, the level control circuit is connected with the switch control circuit, and the switch control circuit is connected with the power supply electronic switch circuit; the human body induction module is used for inducing and capturing signals of human body movement and transmitting the signals to the switch control circuit and the MCU main control unit respectively, the switch control circuit is used for receiving the signals and controlling the on or off of the power electronic switch circuit according to the signals, the MCU main control unit is used for receiving the signals and carrying out time delay processing on the signals and then transmitting the signals to the level control circuit, and the level control circuit is used for keeping the on or off working state of the power electronic switch circuit and controlling the on or off of the power electronic switch circuit in a time delay manner;
the first port is used for inputting a power supply, and inputting the power supply into the human body induction module and the power supply electronic switch circuit respectively, the power supply electronic switch circuit is connected with the MCU main control unit through the voltage stabilizing circuit, and the power supply electronic switch circuit is connected with the power amplifier unit;
the second port is used for inputting an audio signal, inputting the audio signal to the power amplification unit, and amplifying the audio signal by the power amplification unit and outputting the audio signal to a loudspeaker for playing;
the power supply electronic switching circuit comprises a MOS tube Q1, a resistor R3 and a capacitor C4, wherein the resistor R3 is 100 kiloohms, the capacitor C4 is 1 micro-farad, the MOS tube Q1 is a P-channel MOS tube, one end of a pin 5-8 of the MOS tube Q1 is a drain electrode of the MOS tube Q1, and one end of a pin 1-3 of the MOS tube Q1 is a source electrode of the MOS tube Q1;
pins 1-3 of the MOS tube Q1 are connected together and then connected with one end of the capacitor C4 and one end of the resistor R3 respectively, and the first port is connected with one end of the resistor R3; the other end of the capacitor C4 and the other end of the resistor R3 are connected together and connected to the pin 4 of the MOS tube Q1, the pin 4 of the MOS tube Q1 is respectively connected with the switch control circuit and the level control circuit, and the pins 5-8 of the MOS tube Q1 are respectively connected with the voltage stabilizing circuit and the power amplifier unit after being connected together.
2. The induction control speaker system of claim 1, wherein: the signals of the human body motion specifically comprise: a first signal of human body approach and a second signal of human body departure.
3. The induction control speaker system of claim 1, wherein: the power supply electronic switching circuit further comprises a parasitic diode D1 for protecting the MOS tube Q1, and two ends of the parasitic diode D1 are respectively connected with the drain electrode and the source electrode of the MOS tube Q1.
4. The induction control speaker system of claim 1, wherein: the switch control circuit comprises a triode Q2, a resistor R108 and a resistor R243 for dividing voltage and a capacitor C89 for removing pulse interference signals;
the pin 1 of the triode Q2 is respectively connected with the capacitor C89, the resistor R243 and one end of the resistor R108, and the other end of the resistor R108 is connected with the human body induction module; the pin 2 of the triode Q2 is connected to the capacitor C89 and the other end of the resistor R243, respectively, and the other end of the resistor R243 is grounded.
5. The inductively controlled loudspeaker system of claim 4 wherein: the switch control circuit further comprises a resistor R6 for providing starting voltage for the power supply electronic switch circuit, and two ends of the resistor R6 are respectively connected with the pin 3 of the triode Q2 and the power supply electronic switch circuit.
6. The induction control speaker system of claim 1, wherein: the level control circuit comprises a triode Q3, a resistor R2 and a resistor R4 for dividing voltage and a capacitor C1 for removing pulse interference signals;
the pin 1 of the triode Q3 is respectively connected with the capacitor C1, the resistor R4 and one end of the resistor R2, and the other end of the resistor R2 is connected with the MCU main control unit; the pin 2 of the triode Q3 is respectively connected with the capacitor C1 and the other end of the resistor R4, and the other end of the resistor R4 is grounded.
7. The inductively controlled loudspeaker system of claim 6 wherein: the level control circuit further comprises a resistor R1 for controlling the power supply electronic switching circuit, and two ends of the resistor R1 are respectively connected with a pin 3 of the triode Q3 and the power supply electronic switching circuit.
8. The induction control speaker system of claim 1, wherein: the pin 1 of the human body induction module is connected with the first port and is used for inputting a power supply; the pin 2 of the human body induction module is respectively connected with the switch control circuit and the MCU main control unit and is used for respectively transmitting signals for inducing and capturing human body movement by the human body induction module to the switch control circuit and the MCU main control unit; and the pin 3 of the human body induction module is grounded.
9. The induction control speaker system of claim 8, wherein: a resistor R5 and a resistor R7 for dividing voltage and a capacitor C2 for removing pulse interference signals are arranged between the pin 2 of the human body induction module and the MCU main control unit;
the pin 2 of the human body induction module is connected with one end of the resistor R5, the other end of the resistor R5 is respectively connected with one end of the capacitor C2 and one end of the resistor R7, and the MCU main control unit is connected with one end of the resistor R7; the other end of the capacitor C2 is connected with the other end of the resistor R7, and the other end of the resistor R7 is grounded.
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| CN110062308B true CN110062308B (en) | 2024-04-02 |
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