Remote volume control device and sound equipment

Abstract

The utility model relates to the technical field of remote sound control, and discloses a remote volume control device and sound equipment, which comprise a far-end adjusting knob, a connecting cable, a driving module, an optocoupler adjusting module, a near-end adjusting knob and an audio interface. The far-end adjusting knob is connected with the input end of the driving module through a connecting cable, and the far-end adjusting knob responds to triggering of a user and outputs a regulation and control signal; the output end of the driving module is connected with the input end of the optocoupler adjusting module, and the driving module receives the regulation and control signal and outputs a driving signal; the output end of the optocoupler adjusting module is respectively connected with the near-end adjusting knob and the audio interface, and the optocoupler adjusting module receives the driving signal and outputs a volume adjusting signal; the near-end adjusting knob is connected with the audio interface, and the audio interface outputs a volume adjusting signal to the sound equipment needing to be adjusted, so that the volume of the sound equipment is remotely adjusted, and meanwhile, the control quantity is isolated by using the optocoupler adjusting module, so that the sound equipment is prevented from being influenced by harmonic waves generated by the knob.

Description

Technical Field

[0001] This utility model relates to the technical field of remote voice control, and in particular to a remote volume control device and audio equipment. Background Art

[0002] In existing technologies, for applications requiring high sound quality and stability, such as broadcasting systems, conference presentations, or medical demonstrations, volume adjustment is mostly done via knobs and wired control to ensure stable signal transmission and prevent interference from external wireless signals. However, when remotely controlling the volume of wired amplifiers, the knobs generate harmonics, causing noise in the audio equipment and affecting sound quality and the stability of the audio source playback. Utility Model Content

[0003] The main objective of this application is to provide a remote volume control device and audio equipment, so as to achieve remote volume control while avoiding the generation of harmonics caused by knob adjustment, which would cause noise in the audio equipment.

[0004] To achieve the above objectives, some embodiments of this application provide a remote volume control device, including: a remote adjustment knob, a connecting cable, a drive module, an optocoupler adjustment module, a near-end adjustment knob, and an audio interface;

[0005] The remote adjustment knob is connected to the input terminal of the drive module via the connecting cable. The remote adjustment knob is used to respond to user triggering and output an adjustment signal to the drive module.

[0006] The output terminal of the drive module is connected to the input terminal of the optocoupler adjustment module. The drive module is used to receive the control signal and output a drive signal to the optocoupler adjustment module.

[0007] The output terminal of the optocoupler adjustment module is connected to the proximal adjustment knob and the audio interface respectively. The optocoupler adjustment module is used to receive the drive signal and output the volume adjustment signal to the audio interface.

[0008] The proximal adjustment knob is connected to the audio interface, which is used to output the volume adjustment signal to the audio device to be adjusted, so as to control the volume of the audio device to be adjusted.

[0009] Furthermore, the driving module includes: a driving interface, a first driving circuit, and a second driving circuit;

[0010] The drive interface is connected to the connection cable. The input terminals of the first drive circuit and the second drive circuit are both connected to the drive interface. The output terminals of the first drive circuit and the second drive circuit are both connected to the optocoupler adjustment module.

[0011] Furthermore, the optocoupler adjustment module includes: a first optocoupler, a ninth resistor, a first resistor, and a second resistor;

[0012] The first resistor is connected to one end of the photoresistor of the proximal adjustment knob and the first optocoupler, respectively, and the other end of the photoresistor of the first optocoupler is connected to the audio interface through the ninth resistor;

[0013] The second resistor is connected in parallel with the light-emitting diode of the first optocoupler. The anode of the light-emitting diode of the first optocoupler is connected to the output terminal of the first driving circuit, and the cathode of the light-emitting diode of the first optocoupler is grounded.

[0014] Furthermore, the optocoupler adjustment module also includes: a second optocoupler;

[0015] One end of the photoresistor of the second optocoupler is connected to the other end of the photoresistor of the first optocoupler and the ninth resistor, respectively.

[0016] The other end of the photoresistor of the second optocoupler is connected to the audio interface, and both ends of the light-emitting diode of the second optocoupler are connected to the output terminal of the second driving circuit.

[0017] Furthermore, the first driving circuit includes: a first transistor, a third resistor, a fourth resistor, and a fifth resistor;

[0018] The emitter of the first transistor is connected to the anode of the light-emitting diode of the first optocoupler through the third resistor, the base of the first transistor is connected to the driving interface through the fifth resistor, and the collector of the first transistor is connected to an external power supply.

[0019] One end of the fourth resistor is connected to the base of the first transistor, and the other end of the fourth resistor is connected to an external power supply.

[0020] Furthermore, the second driving circuit includes: a second transistor, a sixth resistor, a seventh resistor, and an eighth resistor;

[0021] The emitter of the second transistor is connected to the cathode of the light-emitting diode of the second optocoupler, the base of the second transistor is connected to the driving interface through the sixth resistor, and the collector of the second transistor is connected to the anode of the light-emitting diode of the second optocoupler and the external power supply, respectively.

[0022] One end of the seventh resistor is connected to the base of the second transistor, and the other end of the seventh resistor is connected to an external power supply. One end of the eighth resistor is connected to the emitter of the second transistor, and the other end of the eighth resistor is grounded.

[0023] Furthermore, the proximal adjustment knob is provided with an adjustment end, a first fixed end, and a second fixed end;

[0024] The adjustment end of the proximal adjustment knob is connected to the output end of the optocoupler adjustment module, and both the first and second fixed ends of the proximal adjustment knob are connected to the audio interface.

[0025] Furthermore, the adjusting end of the proximal adjusting knob contacts the second fixed end of the proximal adjusting knob to form a short circuit.

[0026] Furthermore, a remote volume control device also includes: an output interface;

[0027] The output interface is connected to the connection cable, and the remote adjustment knob is connected to the output interface.

[0028] Some embodiments of this application provide an audio device, including a remote volume control device as described in some embodiments of this application.

[0029] The beneficial effects of this utility model are as follows: By connecting the cable, a control signal can be output to the drive module in response to the user-triggered remote adjustment knob, enabling remote wired adjustment of the audio equipment's volume, ensuring stable signal transmission, and preventing interference from external wireless signals; the drive module drives the optocoupler adjustment module to operate according to the control signal, and the optocoupler adjustment module can output a volume adjustment signal to the audio interface, which then outputs the volume adjustment signal to the audio equipment to be adjusted, thereby controlling the volume of the audio equipment. This achieves remote adjustment of the audio equipment's volume while the optocoupler adjustment module isolates the control quantity, preventing harmonics generated when the knob is triggered from affecting the audio equipment, thus improving sound quality and the stability of the audio source playback. Attached Figure Description

[0030] Figure 1 This is a partial circuit diagram of a remote volume control device provided in one embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the frame of a remote volume control device provided in one embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the frame of a remote volume control device provided in another embodiment of the present invention.

[0033] Reference numerals: 100, Audio interface; 200, Output interface; 300, Near-end adjustment knob; 400, Optocoupler adjustment module; L1, First optocoupler; L2, Second optocoupler; R1, First resistor; R2, Second resistor; R9, Ninth resistor; 500, Driver module; 510, Driver interface; R10, Tenth resistor; 520, First driver circuit; Q1, First transistor; R3, Third resistor; R4, Fourth resistor; R5, Fifth resistor; 530, Second driver circuit; Q2, Second transistor; R6, Sixth resistor; R7, Seventh resistor; R8, Eighth resistor; 600, Connecting cable; 700, Remote adjustment knob. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and should not be construed as limiting the scope of this invention.

[0035] It should be noted that although functional modules are divided in the diagram, in some cases, the modules can be divided differently from those in the system.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] As described in the background section, in existing technologies, for applications requiring high sound quality and stability, such as broadcasting systems, conference presentations, or medical demonstrations, volume adjustment is mostly done via knobs and wired control to ensure stable signal transmission and prevent interference from external wireless signals. However, when remotely controlling the volume of wired amplifiers, the knobs generate harmonics, causing noise in the audio equipment and affecting sound quality and the stability of the audio source playback.

[0039] In view of this, this application proposes a remote volume control device and audio equipment to achieve remote volume control while avoiding the generation of harmonics caused by knob adjustment, which would otherwise cause noise in the audio equipment.

[0040] Reference Figures 1 to 3In some embodiments of this utility model, a remote volume control device includes: an audio interface 100, an output interface 200, a near-end adjustment knob 300, an optocoupler adjustment module 400, a drive module 500, a connecting cable 600, and a far-end adjustment knob 700.

[0041] The remote adjustment knob 700 is electrically connected to the output interface 200, and the output interface 200 is electrically connected to one end of the connecting cable 600. The other end of the connecting cable 600 is electrically connected to the input terminal of the drive module 500, so that the remote adjustment knob 700 can be electrically connected to the input terminal of the drive module 500 through the connecting cable 600. The remote adjustment knob 700 is a rotary potentiometer.

[0042] The remote adjustment knob 700 responds to user triggering and outputs an adjustment signal. The adjustment signal is then output to the drive module 500 via the output interface 200 and the connecting cable 600, so that the volume of the audio equipment can be remotely adjusted via the remote adjustment knob 700.

[0043] The output terminal of the drive module 500 is electrically connected to the input terminal of the optocoupler adjustment module 400. The drive module 500 can receive the control signal through the connection cable 600 and output the drive signal to the optocoupler adjustment module 400 according to the control signal.

[0044] The output of the optocoupler adjustment module 400 is electrically connected to the near-end adjustment knob 300, and the output of the optocoupler adjustment module 400 is also electrically connected to the audio interface 100. The near-end adjustment knob 300 is electrically connected to the audio interface 100. The optocoupler adjustment module 400 receives a drive signal, generates a volume adjustment signal based on the drive signal, and sends the volume adjustment signal to the audio interface 100.

[0045] The audio interface 100 is electrically connected to the audio equipment to be adjusted. The audio interface 100 provides a volume adjustment signal to the audio equipment to be adjusted, thereby controlling the volume of the audio equipment to be adjusted.

[0046] For example, by changing the adjustment end of the remote adjustment knob 700, different control signals are output. These signals are then output to the drive module 500 via the connecting cable 600. The drive module 500 outputs a corresponding drive signal based on the control signal. The optocoupler adjustment module 400 changes the resistance of its internal photoresistor based on the drive signal, thereby outputting a volume adjustment signal to the audio interface 100 to adjust the volume of the audio equipment to be adjusted.

[0047] The volume adjustment signal can be a voltage signal, a current signal, or a resistance signal. In this embodiment, no specific restrictions are imposed on the volume adjustment signal, and correspondingly, no specific restrictions are imposed on the control signal and the drive signal.

[0048] In this application, a connecting cable 600 is used to enable the remote adjustment knob 700, triggered by the user, to output a control signal to the drive module 500, thereby achieving remote wired adjustment of the audio equipment's volume. This ensures stable signal transmission and prevents interference from external wireless signals. The drive module 500 drives the optocoupler adjustment module 400 to operate based on the control signal. The optocoupler adjustment module 400 outputs a volume adjustment signal to the audio interface 100, which then outputs the volume adjustment signal to the audio equipment to be adjusted. This controls the volume of the audio equipment, allowing for remote adjustment of the audio equipment's volume. Simultaneously, the optocoupler adjustment module 400 isolates the control signal, preventing harmonics from being generated when the knob is triggered and affecting the audio equipment, thus improving sound quality and the stability of the audio source playback.

[0049] Reference Figure 1 and Figure 3 In some embodiments of this utility model, the driving module 500 includes: a driving interface 510, a tenth resistor R10, a first driving circuit 520, and a second driving circuit 530.

[0050] The drive interface 510 is electrically connected to the other end of the connecting cable 600, the drive interface 510 is electrically connected to the input end of the first drive circuit 520, and the output end of the first drive circuit 520 is electrically connected to the input end of the optocoupler adjustment module 400.

[0051] The drive interface 510 is electrically connected to the input terminal of the second drive circuit 530, and the output terminal of the second drive circuit 530 is electrically connected to the input terminal of the optocoupler adjustment module 400.

[0052] The two ends of the tenth resistor R10 are electrically connected to the drive interface 510. One end of the tenth resistor R10 is also electrically connected to the input terminal of the first drive circuit 520 and the input terminal of the second drive circuit 530, respectively. The other end of the tenth resistor R10 is also connected to ground.

[0053] The drive interface 510 receives the control signal and transmits the control signal to the first drive circuit 520 and the second drive circuit 530, and the first drive circuit 520 and the second drive circuit 530 generate drive signals.

[0054] The first driving circuit 520 includes: a fifth resistor R5, a fourth resistor R4, a third resistor R3, and a first transistor Q1.

[0055] The emitter of the first transistor Q1 is electrically connected to one end of the third resistor R3, and the other end of the third resistor R3 is electrically connected to the anode of the light-emitting diode of the first optocoupler L1 of the optocoupler adjustment module 400.

[0056] The base of the first transistor Q1 is electrically connected to one end of the fourth resistor R4. The base of the first transistor Q1 is electrically connected to one end of the fifth resistor R5. The other end of the fifth resistor R5 is electrically connected to the drive interface 510. The other end of the fourth resistor R4 is electrically connected to the external power supply. The collector of the first transistor Q1 is electrically connected to the external power supply, that is, the collector of the first transistor Q1 is electrically connected to the other end of the fourth resistor R4.

[0057] In this embodiment, the fourth resistor R4 can be a pull-up resistor.

[0058] The second driving circuit 530 includes: an eighth resistor R8, a seventh resistor R7, a sixth resistor R6, and a second transistor Q2.

[0059] The emitter of the second transistor Q2 is electrically connected to the cathode of the light-emitting diode of the second optocoupler L2 in the optocoupler adjustment module 400. The collector of the second transistor Q2 is electrically connected to the anode of the light-emitting diode of the second optocoupler L2 in the optocoupler adjustment module 400.

[0060] The base of the second transistor Q2 is electrically connected to one end of the sixth resistor R6 and one end of the seventh resistor R7, respectively. The other end of the sixth resistor R6 is electrically connected to the drive interface 510, and the other end of the seventh resistor R7 is electrically connected to the external power supply. The collector of the second transistor Q2 is also electrically connected to the external power supply, that is, the collector of the second transistor Q2 is electrically connected to the other end of the seventh resistor R7. The collector of the second transistor Q2 is also electrically connected to the collector of the first transistor Q1.

[0061] One end of the eighth resistor R8 is electrically connected to the emitter of the second transistor Q2, and the other end of the eighth resistor R8 is connected to ground.

[0062] In this embodiment, the eighth resistor R8 can be a pull-down resistor, and the seventh resistor R7 can be a pull-up resistor.

[0063] Reference Figure 1 and Figure 3 In some embodiments of this utility model, the optocoupler adjustment module 400 includes: a first optocoupler L1, a second optocoupler L2, a first resistor R1, a ninth resistor R9, and a second resistor R2.

[0064] One end of the first resistor R1 is electrically connected to the adjustment end of the near-end adjustment knob 300, and the other end of the first resistor R1 is electrically connected to one end of the photoresistor of the first optocoupler L1. The other end of the photoresistor of the first optocoupler L1 is electrically connected to one end of the photoresistor of the second optocoupler L2. The other end of the photoresistor of the first optocoupler L1 is also electrically connected to one end of the ninth resistor R9. The other end of the ninth resistor R9 is electrically connected to the audio interface 100.

[0065] The second resistor R2 is connected in parallel with the light-emitting diode of the first optocoupler L1. The anode of the light-emitting diode of the first optocoupler L1 is electrically connected to one end of the second resistor R2 and the other end of the third resistor R3, respectively. The cathode of the light-emitting diode of the first optocoupler L1 is connected to ground, that is, the other end of the second resistor R2 is connected to ground.

[0066] For example, according to the control signal, the first transistor Q1 is turned on, and the external power supply supplies power to the anode of the light-emitting diode of the first optocoupler L1 through the first transistor Q1. Since the cathode of the light-emitting diode is grounded, the light-emitting diode is lit. Under the action of the lit light-emitting diode, the resistance of the photoresistor changes, and the resistance of the resistor connected to the audio equipment to be adjusted changes, thereby changing the volume of the audio equipment to be adjusted, and realizing the volume control.

[0067] One end of the photoresistor of the second optocoupler L2 is connected to the other end of the photoresistor of the first optocoupler L1. One end of the photoresistor of the second optocoupler L2 is also electrically connected to one end of the ninth resistor R9. The other end of the photoresistor of the second optocoupler L2 is electrically connected to the audio interface 100.

[0068] The anode of the light-emitting diode of the second optocoupler L2 is electrically connected to the collector of the second transistor Q2, i.e., connected to an external power supply. The cathode of the light-emitting diode of the second optocoupler L2 is electrically connected to the emitter of the second transistor Q2, i.e. connected to ground through the eighth resistor R8, so as to achieve electrical connection with the output terminal of the second driving circuit 530.

[0069] Reference Figure 1 and Figure 3 In some embodiments of this utility model, the proximal adjustment knob 300 is provided with an adjustment end, a first fixed end and a second fixed end.

[0070] The adjustment terminal of the proximal adjustment knob 300 is electrically connected to one end of the first resistor R1, the first fixed terminal of the proximal adjustment knob 300 is electrically connected to the audio interface 100, and the second fixed terminal of the proximal adjustment knob 300 is electrically connected to the audio interface 100.

[0071] In one embodiment, when the adjusting terminal of the proximal adjustment knob 300 is in contact with the second fixed terminal of the proximal adjustment knob 300, the resistance of the proximal adjustment knob 300 is zero. The adjusting terminal and the second fixed terminal of the proximal adjustment knob 300 are short-circuited to prevent the resistance of the proximal adjustment knob 300 from being affected by the control quantity output from the remote end. The proximal adjustment knob 300 is a rotary potentiometer.

[0072] In one embodiment, the adjusting end of the proximal adjusting knob 300 can contact the first fixed end of the proximal adjusting knob 300, at which point the resistance of the proximal adjusting knob 300 is at its maximum value, preventing the resistance of the proximal adjusting knob 300 from being affected by the control quantity output from the remote end. The proximal adjusting knob 300 is a rotary potentiometer.

[0073] Correspondingly, both the adjusting end and the fixed end of the remote adjustment knob 700 are electrically connected to the output interface 200. By changing the adjusting end of the remote adjustment knob 700, different control signals are output, thereby controlling the volume of the audio equipment. The remote adjustment knob 700 is a rotary potentiometer.

[0074] In some embodiments of another aspect of the present invention, an audio device includes a remote volume control device according to some embodiments of another aspect of the present invention.

[0075] In this application, a connecting cable 600 is used to enable the remote adjustment knob 700, triggered by the user, to output a control signal to the drive module 500, thereby achieving remote wired adjustment of the audio equipment's volume. This ensures stable signal transmission and prevents interference from external wireless signals. The drive module 500 drives the optocoupler adjustment module 400 to operate based on the control signal. The optocoupler adjustment module 400 outputs a volume adjustment signal to the audio interface 100, which then outputs the volume adjustment signal to the audio equipment to be adjusted. This controls the volume of the audio equipment, allowing for remote adjustment of the audio equipment's volume. Simultaneously, the optocoupler adjustment module 400 isolates the control signal, preventing harmonics from being generated when the knob is triggered and affecting the audio equipment, thus improving sound quality and the stability of the audio source playback.

[0076] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A remote volume control device, characterized in that, include: Remote adjustment knob, connecting cable, drive module, optocoupler adjustment module, near-end adjustment knob and audio interface; The remote adjustment knob is connected to the input terminal of the drive module via the connecting cable. The remote adjustment knob is used to respond to user triggering and output an adjustment signal to the drive module. The output terminal of the drive module is connected to the input terminal of the optocoupler adjustment module. The drive module is used to receive the control signal and output a drive signal to the optocoupler adjustment module. The output terminal of the optocoupler adjustment module is connected to the proximal adjustment knob and the audio interface respectively. The optocoupler adjustment module is used to receive the drive signal and output the volume adjustment signal to the audio interface. The proximal adjustment knob is connected to the audio interface, which is used to output the volume adjustment signal to the audio device to be adjusted, so as to control the volume of the audio device to be adjusted.

2. The remote volume control device according to claim 1, characterized in that, The driving module includes: a driving interface, a first driving circuit, and a second driving circuit; The drive interface is connected to the connection cable. The input terminals of the first drive circuit and the second drive circuit are both connected to the drive interface. The output terminals of the first drive circuit and the second drive circuit are both connected to the optocoupler adjustment module.

3. The remote volume control device according to claim 2, characterized in that, The optocoupler adjustment module includes: a first optocoupler, a ninth resistor, a first resistor, and a second resistor; The first resistor is connected to one end of the photoresistor of the proximal adjustment knob and the first optocoupler, respectively, and the other end of the photoresistor of the first optocoupler is connected to the audio interface through the ninth resistor; The second resistor is connected in parallel with the light-emitting diode of the first optocoupler. The anode of the light-emitting diode of the first optocoupler is connected to the output terminal of the first driving circuit, and the cathode of the light-emitting diode of the first optocoupler is grounded.

4. A remote volume control device according to claim 3, characterized in that, The optocoupler adjustment module further includes: a second optocoupler; One end of the photoresistor of the second optocoupler is connected to the other end of the photoresistor of the first optocoupler and the ninth resistor, respectively. The other end of the photoresistor of the second optocoupler is connected to the audio interface, and both ends of the light-emitting diode of the second optocoupler are connected to the output terminal of the second driving circuit.

5. A remote volume control device according to claim 3, characterized in that, The first driving circuit includes: a first transistor, a third resistor, a fourth resistor, and a fifth resistor; The emitter of the first transistor is connected to the anode of the light-emitting diode of the first optocoupler through the third resistor, the base of the first transistor is connected to the driving interface through the fifth resistor, and the collector of the first transistor is connected to an external power supply. One end of the fourth resistor is connected to the base of the first transistor, and the other end of the fourth resistor is connected to an external power supply.

6. A remote volume control device according to claim 4, characterized in that, The second driving circuit includes: a second transistor, a sixth resistor, a seventh resistor, and an eighth resistor; The emitter of the second transistor is connected to the cathode of the light-emitting diode of the second optocoupler, the base of the second transistor is connected to the driving interface through the sixth resistor, and the collector of the second transistor is connected to the anode of the light-emitting diode of the second optocoupler and the external power supply, respectively. One end of the seventh resistor is connected to the base of the second transistor, and the other end of the seventh resistor is connected to an external power supply. One end of the eighth resistor is connected to the emitter of the second transistor, and the other end of the eighth resistor is grounded.

7. A remote volume control device according to claim 1, characterized in that, The proximal adjustment knob is provided with an adjustment end, a first fixed end, and a second fixed end; The adjustment end of the proximal adjustment knob is connected to the output end of the optocoupler adjustment module, and both the first and second fixed ends of the proximal adjustment knob are connected to the audio interface.

8. A remote volume control device according to claim 7, characterized in that, The adjusting end of the proximal adjusting knob contacts the second fixed end of the proximal adjusting knob to form a short circuit.

9. A remote volume control device according to claim 1, characterized in that, Also includes: Output interface; The output interface is connected to the connection cable, and the remote adjustment knob is connected to the output interface.

10. An audio device, characterized in that, Includes a remote volume control device as described in any one of claims 1 to 9.

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