Bluetooth sound equipment control circuit and sofa sound equipment control system

Abstract

The utility model relates to the technical field of Bluetooth sound equipment, in particular to a control circuit of Bluetooth sound equipment and a sofa sound equipment control system. The digital power amplifier circuit module is electrically connected with the main control circuit module, and audio signals of the main control circuit module are output through the digital power amplifier circuit module; the vibration driving circuit module is electrically connected with the main control circuit module, and the vibration driving circuit module generates a vibration signal corresponding to the audio signal through the control signal and the audio signal sent by the main control circuit module; and the power amplifier output circuit module is electrically connected with the vibration driving circuit module and is used for amplifying the vibration signal so as to drive a vibration motor to generate vibration sense. The vibration frequency of the vibration motor is matched according to the playing form determined by the user, so that the vibration sense of the sofa is changed along with the melody of music under the condition that the Bluetooth sound equipment keeps good tone quality.

Description

Technical Field

[0001] The utility model relates to the technical field of Bluetooth speakers, in particular to a control circuit of a Bluetooth speaker and a sofa speaker control system. Background Art

[0002] Nowadays, Bluetooth audio devices are more and more commonly used. People connect these music playing devices to smart home systems by wire or wireless means, and play their favorite music through the Bluetooth audio system and combine it with the vibration of the sofa. However, in the process of adapting the Bluetooth audio to the massage sofa in the prior art, the vibration of the massage sofa is disconnected from the rhythm of the music and cannot be closely combined. Utility Model Content

[0003] In order to solve the technical problems mentioned in the background technology, the utility model provides a control circuit of a Bluetooth speaker and a sofa speaker control system.

[0004] In a first aspect, the utility model provides a control circuit of a Bluetooth speaker, comprising:

[0005] A main control circuit module; and

[0006] A digital power amplifier circuit module is electrically connected to the main control circuit module and outputs the audio signal of the main control circuit module through the digital power amplifier circuit module;

[0007] A vibration driving circuit module is electrically connected to the main control circuit module, and through the control signal and the audio signal sent by the main control circuit module, the vibration driving circuit module generates a vibration signal corresponding to the audio signal;

[0008] The power amplifier output circuit module is electrically connected to the vibration driving circuit module to amplify the vibration signal, thereby driving the vibration motor to generate vibration.

[0009] The digital power amplifier circuit module comprises: a first digital power amplifier circuit and a second digital power amplifier circuit;

[0010] The first digital power amplifier circuit and the second digital power amplifier circuit both use the ACM8265S chip;

[0011] The first digital power amplifier circuit is used to output mid-high tones, and the second digital power amplifier circuit is used to output bass;

[0012] Pins 6, 7, 8, 10, 11 and 12 of the first digital power amplifier circuit are respectively connected to corresponding ports of the main control circuit module, and pin 12 of the second digital power amplifier circuit is connected to a corresponding port of the main control circuit module;

[0013] Pin 10 of the first digital power amplifier circuit is connected to pin 10 of the second digital power amplifier circuit, pin 11 of the first digital power amplifier circuit is connected to pin 11 of the second digital power amplifier circuit, pin 6 of the first digital power amplifier circuit is connected to pin 6 of the second digital power amplifier circuit, pin 7 of the first digital power amplifier circuit is connected to pin 7 of the second digital power amplifier circuit, pin 8 of the first digital power amplifier circuit is connected to pin 8 of the second digital power amplifier circuit through resistor R25, and pin 9 of the first digital power amplifier circuit is connected to pin 8 of the second digital power amplifier circuit through resistor R24.

[0014] The vibration driving circuit module includes: a driving chip AC6966B;

[0015] Pin 3 of the driver chip AC6966B is connected to the DACLP signal input end of the main control circuit module, and pin 4 of the driver chip AC6966B is connected to the DACRP signal input end of the main control circuit module.

[0016] The power amplifier output circuit module is used for low-pass amplification of the vibration signal, and comprises: a first power amplifier pre-circuit;

[0017] The first power amplifier pre-circuit comprises: a first operational amplifier U5A and a second operational amplifier U5B;

[0018] The inverting input terminal of the first operational amplifier U5A is connected to pin 3 of the vibration driving circuit module, and the inverting input of the first operational amplifier U5A is connected to the output terminal of the first operational amplifier U5A through a resistor-capacitor circuit;

[0019] The non-inverting input terminal of the first operational amplifier U5A is connected in series with a resistor R37 and then connected to a reference voltage V REF ;

[0020] The output terminal of the first operational amplifier U5A is respectively connected to the inverting input terminal and the non-inverting input terminal of the second operational amplifier U5B; and

[0021] The output end of the second operational amplifier U5B is connected to the first power amplifier circuit via a series resistor R34 and a capacitor C48.

[0022] The power amplifier output circuit module further includes: a second power amplifier preamplifier circuit;

[0023] The second power amplifier preamplifier circuit includes: a first operational amplifier U5A and a second operational amplifier U5B;

[0024] The inverting input terminal of the first operational amplifier U6A is connected to pin 4 of the vibration driving circuit module, and the inverting input of the first operational amplifier U6A is connected to the output terminal of the first operational amplifier U6A through a resistor-capacitor circuit;

[0025] The non-inverting input terminal of the first operational amplifier U6A is connected in series with a resistor R43 and then connected to a reference voltage V REF ;

[0026] The output terminal of the first operational amplifier U6A is respectively connected to the inverting input terminal and the non-inverting input terminal of the second operational amplifier U6B; and

[0027] The output end of the second operational amplifier U5B is connected to the second power amplifier circuit via a series resistor R40 and a capacitor C54.

[0028] The first power amplifier circuit comprises: a first power amplifier chip HT338;

[0029] Connection between pin 12 of the first power amplifier chip HT338 and the first power amplifier pre-circuit;

[0030] Pin No. 2 of the first power amplifier chip HT338 is connected to pin No. 7 of the vibration driving circuit module, and pin No. 13 of the first power amplifier chip HT338 is connected to pin No. 8 of the vibration driving circuit module.

[0031] The second power amplifier circuit comprises: a second power amplifier chip HT338;

[0032] Connection between pin 12 of the second power amplifier chip HT338 and the second power amplifier pre-circuit;

[0033] Pin No. 2 of the second power amplifier chip HT338 is connected to pin No. 7 of the vibration driving circuit module, and pin No. 13 of the second power amplifier chip HT338 is connected to pin No. 8 of the vibration driving circuit module.

[0034] In a second aspect, the utility model provides a sofa audio control system, comprising a vibration motor, a speaker, and a control circuit of the above-mentioned Bluetooth audio system; the control circuit is electrically connected to the vibration motor and the speaker, respectively.

[0035] The beneficial effect of the utility model is that the signal of the main control circuit module is obtained through the digital power amplifier circuit module, and the corresponding audio signal is sent to the vibration drive circuit module according to the playback form determined by the user, so that the vibration drive circuit module generates a vibration signal corresponding to the audio signal, and the vibration of the sofa changes with the melody of the music. In this process, the vibration signal is amplified by the power amplifier output circuit module, so that the frequency of the vibration motor and the frequency of the music rhythm are better adapted.

[0036] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a circuit principle block diagram of the control circuit of the utility model;

[0040] Figure 2 This is the circuit schematic diagram of the main control circuit module of the utility model;

[0041] Figure 3 This is the circuit schematic diagram of the digital power amplifier circuit module of the utility model;

[0042] Figure 4 This is the circuit schematic diagram of the vibration drive circuit module of the utility model;

[0043] Figure 5 This is the circuit schematic diagram of the power amplifier output circuit module of the utility model;

[0044] Figure 6 This is the first power amplifier circuit schematic diagram of the utility model;

[0045] Figure 7 This is the schematic diagram of the second power amplifier circuit of the utility model;

[0046] Figure 8 It is a circuit principle block diagram of the sofa of the utility model. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] like Figure 1 and Figure 2 As shown, this embodiment provides a control circuit of a Bluetooth speaker, including a main control circuit module; and a digital power amplifier circuit module, which is electrically connected to the main control circuit module and outputs an audio signal of the main control circuit module through the digital power amplifier circuit module; a vibration drive circuit module, which is electrically connected to the main control circuit module and generates a vibration signal corresponding to the audio signal through a control signal and an audio signal sent by the main control circuit module; and a power amplifier output circuit module, which is electrically connected to the vibration drive circuit module and amplifies the vibration signal, thereby driving the vibration motor to generate a vibration sense.

[0049] The main control chip is used to receive Bluetooth data and generate two groups of audio signals, one group is audio signals to the digital power amplifier circuit module, and the other group is control signals to the vibration drive circuit module. The main control module can be but is not limited to using a JL7012C chip.

[0050] like Figure 3 As shown, the digital power amplifier circuit module includes: a first digital power amplifier circuit and a second digital power amplifier circuit; the first digital power amplifier circuit and the second digital power amplifier circuit can be but are not limited to using an ACM8265S chip; the first digital power amplifier circuit is used to output mid-high frequencies, and the second digital power amplifier circuit is used to output bass frequencies.

[0051] The following takes the ACM8265S chip as an example to explain the specific circuit of the digital power amplifier circuit module:

[0052] Wherein, pin 6, pin 7, pin 8, pin 10, pin 11 and pin 12 of the first digital power amplifier circuit are respectively connected to the corresponding ports of the main control circuit module, and pin 12 of the second digital power amplifier circuit is connected to the corresponding port of the main control circuit module;

[0053] Pin 10 of the first digital power amplifier circuit is connected to pin 10 of the second digital power amplifier circuit, pin 11 of the first digital power amplifier circuit is connected to pin 11 of the second digital power amplifier circuit, pin 6 of the first digital power amplifier circuit is connected to pin 6 of the second digital power amplifier circuit, pin 7 of the first digital power amplifier circuit is connected to pin 7 of the second digital power amplifier circuit, pin 8 of the first digital power amplifier circuit is connected to pin 8 of the second digital power amplifier circuit through resistor R25, and pin 9 of the first digital power amplifier circuit is connected to pin 8 of the second digital power amplifier circuit through resistor R24.

[0054] like Figure 4 As shown, the vibration driving circuit module can be but not limited to using a driving chip AC6966B;

[0055] The following uses the AC6966B chip as an example to explain the specific circuit of the vibration drive circuit module:

[0056] The vibration driving circuit module receives the audio signal and the control signal from the main control circuit module to generate a vibration simulation signal. Pin 3 of the driving chip AC6966B is connected to the DACLP signal input end of the main control circuit module, and pin 4 of the driving chip AC6966B is connected to the DACRP signal input end of the main control circuit module.

[0057] like Figure 5 As shown, the power amplifier output circuit module includes: a first power amplifier pre-circuit and a second power amplifier pre-circuit; the power amplifier output circuit module is used for low-pass amplifying the vibration signal.

[0058] The first power amplifier pre-circuit comprises: a first operational amplifier U5A and a second operational amplifier U5B; wherein the inverting input terminal of the first operational amplifier U5A is connected to pin 3 of the vibration drive circuit module, and the inverting input terminal of the first operational amplifier U5A is connected to the output terminal of the first operational amplifier U5A through a resistor-capacitor circuit; the non-inverting input terminal of the first operational amplifier U5A is connected in series with a resistor R37 and then connected to a reference voltage V REF ; The output end of the first operational amplifier U5A is connected to the inverting input end and the non-inverting input end of the second operational amplifier U5B respectively; and the output end of the second operational amplifier U5B is connected to the first power amplifier circuit through a series resistor R34 and a capacitor C48.

[0059] The second power amplifier pre-circuit comprises: a first operational amplifier U5A and a second operational amplifier U5B; wherein the inverting input terminal of the first operational amplifier U6A is connected to the No. 4 pin of the vibration driving circuit module, and the inverting input terminal of the first operational amplifier U6A is connected to the output terminal of the first operational amplifier U6A through a resistor-capacitor circuit; the non-inverting input terminal of the first operational amplifier U6A is connected in series with a resistor R43 and then connected to a reference voltage V REF The output end of the first operational amplifier U6A is respectively connected to the inverting input end and the non-inverting input end of the second operational amplifier U6B; and the output end of the second operational amplifier U5B is connected to the second power amplifier circuit through a series resistor R40 and a capacitor C54.

[0060] like Figure 6 As shown, the first power amplifier circuit may be but is not limited to using a first power amplifier chip HT338;

[0061] The following takes the first power amplifier chip HT338 as an example to explain the specific circuit of the first power amplifier circuit:

[0062] Connection between pin 12 of the first power amplifier chip HT338 and the first power amplifier pre-circuit;

[0063] Pin No. 2 of the first power amplifier chip HT338 is connected to pin No. 7 of the vibration driving circuit module, and pin No. 13 of the first power amplifier chip HT338 is connected to pin No. 8 of the vibration driving circuit module.

[0064] like Figure 7 As shown, the first power amplifier circuit may be but is not limited to using a second power amplifier chip HT338;

[0065] The following takes the second power amplifier chip HT338 as an example to explain the specific circuit of the first power amplifier circuit:

[0066] Pin 12 of the second power amplifier chip HT338 is connected to the second power amplifier pre-circuit; pin 2 of the second power amplifier chip HT338 is connected to pin 7 of the vibration drive circuit module, and pin 13 of the second power amplifier chip HT338 is connected to pin 8 of the vibration drive circuit module.

[0067] The first power amplifier circuit and the second power amplifier circuit are used to drive the vibration motor.

[0068] In the second aspect, the utility model provides a sofa sound control system, such as Figure 8 As shown, it includes a vibration motor, a speaker and a control circuit like the above-mentioned Bluetooth speaker, and the control circuit is electrically connected to the vibration motor and the speaker respectively.

[0069] To summarize, the signal of the main control circuit module is obtained through the digital power amplifier circuit module, and the corresponding audio signal is sent to the vibration drive circuit module according to the playback mode determined by the user, so that the vibration drive circuit module generates a vibration signal corresponding to the audio signal, and the vibration of the sofa changes with the melody of the music. In this process, the vibration signal is amplified by the power amplifier output circuit module, so that the frequency of the vibration motor and the frequency of the music rhythm are better adapted.

[0070] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the utility model. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of boxes in the block diagram and / or the flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0071] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0072] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A control circuit of a Bluetooth speaker, characterized in that: include: Main control circuit module; and A digital power amplifier circuit module is electrically connected to the main control circuit module and outputs the audio signal of the main control circuit module through the digital power amplifier circuit module; A vibration driving circuit module is electrically connected to the main control circuit module, and through the control signal and the audio signal sent by the main control circuit module, the vibration driving circuit module generates a vibration signal corresponding to the audio signal; The power amplifier output circuit module is electrically connected to the vibration driving circuit module to amplify the vibration signal, thereby driving the vibration motor to generate vibration.

2. The control circuit according to claim 1, characterized in that: The digital power amplifier circuit module comprises: a first digital power amplifier circuit and a second digital power amplifier circuit; The first digital power amplifier circuit and the second digital power amplifier circuit both use the ACM8265S chip; The first digital power amplifier circuit is used to output mid-high tones, and the second digital power amplifier circuit is used to output bass; Pins 6, 7, 8, 10, 11 and 12 of the first digital power amplifier circuit are respectively connected to corresponding ports of the main control circuit module, and pin 12 of the second digital power amplifier circuit is connected to a corresponding port of the main control circuit module; Pin 10 of the first digital power amplifier circuit is connected to pin 10 of the second digital power amplifier circuit, pin 11 of the first digital power amplifier circuit is connected to pin 11 of the second digital power amplifier circuit, pin 6 of the first digital power amplifier circuit is connected to pin 6 of the second digital power amplifier circuit, pin 7 of the first digital power amplifier circuit is connected to pin 7 of the second digital power amplifier circuit, pin 8 of the first digital power amplifier circuit is connected to pin 8 of the second digital power amplifier circuit through resistor R25, and pin 9 of the first digital power amplifier circuit is connected to pin 8 of the second digital power amplifier circuit through resistor R24.

3. The control circuit according to claim 2, characterized in that: The vibration driving circuit module includes: a driving chip AC6966B; Pin 3 of the driver chip AC6966B is connected to the DACLP signal input end of the main control circuit module, and pin 4 of the driver chip AC6966B is connected to the DACRP signal input end of the main control circuit module.

4. The control circuit according to claim 3, characterized in that: The power amplifier output circuit module is used for low-pass amplification of the vibration signal, and comprises: a first power amplifier pre-circuit; The first power amplifier pre-circuit comprises: a first operational amplifier U5A and a second operational amplifier U5B; The inverting input terminal of the first operational amplifier U5A is connected to pin 3 of the vibration driving circuit module, and the inverting input of the first operational amplifier U5A is connected to the output terminal of the first operational amplifier U5A through a resistor-capacitor circuit; The non-inverting input terminal of the first operational amplifier U5A is connected in series with a resistor R37 and then connected to a reference voltage V REF ; The output terminal of the first operational amplifier U5A is respectively connected to the inverting input terminal and the non-inverting input terminal of the second operational amplifier U5B; and The output end of the second operational amplifier U5B is connected to the first power amplifier circuit via a series resistor R34 and a capacitor C48.

5. The control circuit according to claim 4, characterized in that: The power amplifier output circuit module further includes: a second power amplifier preamplifier circuit; The second power amplifier preamplifier circuit includes: a first operational amplifier U5A and a second operational amplifier U5B; The inverting input terminal of the first operational amplifier U6A is connected to pin 4 of the vibration driving circuit module, and the inverting input of the first operational amplifier U6A is connected to the output terminal of the first operational amplifier U6A through a resistor-capacitor circuit; The non-inverting input terminal of the first operational amplifier U6A is connected in series with a resistor R43 and then connected to a reference voltage V REF ; The output terminal of the first operational amplifier U6A is respectively connected to the inverting input terminal and the non-inverting input terminal of the second operational amplifier U6B; and The output end of the second operational amplifier U5B is connected to the second power amplifier circuit via a series resistor R40 and a capacitor C54.

6. The control circuit according to claim 5, characterized in that: The first power amplifier circuit comprises: a first power amplifier chip HT338; The connection between the pin 12 of the first power amplifier chip HT338 and the first power amplifier pre-circuit; Pin No. 2 of the first power amplifier chip HT338 is connected to pin No. 7 of the vibration driving circuit module, and pin No. 13 of the first power amplifier chip HT338 is connected to pin No. 8 of the vibration driving circuit module.

7. The control circuit according to claim 6, characterized in that The second power amplifier circuit comprises: a second power amplifier chip HT338; Connection between pin 12 of the second power amplifier chip HT338 and the second power amplifier pre-circuit; Pin No. 2 of the second power amplifier chip HT338 is connected to pin No. 7 of the vibration driving circuit module, and pin No. 13 of the second power amplifier chip HT338 is connected to pin No. 8 of the vibration driving circuit module.

8. A sofa sound control system, characterized in that: comprising a vibration motor, a speaker and a control circuit as claimed in any one of claims 1 to 7; The control circuit is electrically connected to the vibration motor and the speaker respectively.

Images