CN213602775U - Remote control signal processing circuit of sound box and sound box - Google Patents
Remote control signal processing circuit of sound box and sound box Download PDFInfo
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- CN213602775U CN213602775U CN202022899220.6U CN202022899220U CN213602775U CN 213602775 U CN213602775 U CN 213602775U CN 202022899220 U CN202022899220 U CN 202022899220U CN 213602775 U CN213602775 U CN 213602775U
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Abstract
The application relates to a remote control signal processing circuit and audio amplifier of audio amplifier, a remote control signal processing circuit of audio amplifier is including being used for installing the infrared emission module on the remote controller of audio amplifier and being used for installing the signal reception chip on the audio amplifier, and the infrared module of penetrating is coupled with prevents mistake and touches the module, prevents mistake and touches the module and include pressure detecting element, pressure comparing element and switch unit. This application has the switch element and sends the outage of switching signal control infrared emission module, if the remote controller is pressed by the mistake or when being pressed by the foreign object this moment, infrared emission module all does not send infrared signal, has realized that the remote controller is difficult for being pressed by the mistake or by the foreign object and pressed the maloperation that arouses the audio amplifier function because of the button, the effect of the life of extension audio amplifier.
Description
Technical Field
The application relates to the technical field of sound equipment, in particular to a remote control signal processing circuit of a sound box and the sound box.
Background
At present, with the increasing maturity of infrared remote control technology, sound equipment adopts infrared remote control technology to realize the remote operation of user to electrical equipment to the convenience that the user used has greatly been improved. The existing infrared remote control technology transmits infrared waveform signals with different code values through a remote controller to be provided for receiving of electrical equipment, a signal receiving chip on the electrical equipment receives the signals so as to read out the different code values, and the different code values represent different trigger keys.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the mode of controlling the sound box by pressing the buttons of the remote controller is easy to cause misoperation on the functions of the sound box due to the fact that the buttons of the remote controller are pressed by foreign objects or are pressed by children by mistake, and the sound box is easy to damage.
SUMMERY OF THE UTILITY MODEL
In order to prevent the misoperation of the sound box function caused by the fact that the button of the remote controller is pressed by mistake or is pressed by a foreign object under the condition that the remote controller is not normally used, the service life of the sound box is prolonged. The application provides a remote control signal processing circuit and audio amplifier of audio amplifier.
In a first aspect, the present application provides a remote control signal processing circuit for a sound box. The following technical scheme is adopted:
a remote control signal processing circuit of a sound box comprises an infrared emission module and a signal receiving chip, wherein the infrared emission module is arranged on a remote controller of the sound box, the signal receiving chip is arranged on the sound box, the infrared emission module is coupled with an anti-false-touch module, the anti-false-touch module comprises a pressure detection unit, and the pressure detection unit is arranged on the remote controller, is used for detecting the external pressure applied to the remote controller and sends out a pressure detection signal;
the pressure comparison unit is connected with the pressure detection unit and is provided with a threshold signal Vref1 so as to output a pressure comparison signal when the received pressure detection signal is greater than the threshold signal Vref 1;
and the switch unit is coupled with the pressure comparison unit and the infrared emission module, and sends out a switch signal to control the infrared emission module to be powered off when receiving the pressure comparison signal.
By adopting the technical scheme, when a user normally operates the remote controller, the button of the remote controller is pressed to enable the infrared emission module to normally emit a signal on the infrared signal sound box to the receiving chip, and the signal is decoded and then controlled to realize the function of the corresponding button after the infrared signal is received by the receiving chip;
through the compact structure who is used for compressing tightly pressure detecting element of installation on the remote controller, when the user accomplishes the operation, operation compact structure makes it produce the effort to pressure detecting element, the pressure detection signal that sends after the pressure detecting element atress diminishes, when pressure detection signal is greater than threshold signal Vref1, pressure comparing element output pressure comparison signal to switch unit, switch unit sends switch signal control infrared emission module outage behind the received pressure comparison signal, if the remote controller is pressed by the mistake or when being pressed by the foreign object this moment, infrared emission module all does not send infrared signal, the unable response of audio amplifier, realized that the remote controller is difficult for being pressed by the mistake or being pressed by the foreign object and arouse the maloperation of audio amplifier function because of the button, the life of extension audio amplifier.
Optionally, the pressure detection unit includes a force-sensitive resistor RA, one end of the force-sensitive resistor RA is coupled to the power supply voltage VCC, the other end of the force-sensitive resistor RA is grounded through a first resistor R1, and a connection node between the force-sensitive resistor RA and the first resistor R1 is coupled to the pressure comparison unit.
Through adopting above-mentioned technical scheme, when the compact structure pressure was established on force sensing resistor RA, the pressure that force sensing resistor RA received increases and makes its resistance increase, and then makes the voltage that its both ends divide increase, and the voltage that divides at this moment first resistance R1 both ends reduces, and the voltage of force sensing resistor RA and the connected node output of first resistance R1 reduces this moment, and pressure detection signal output reduces this moment promptly.
Optionally, the pressure comparing unit includes a comparator N1, a first signal input terminal of the comparator N1 is coupled to a connection node between the force sensing resistor RA and the first resistor R1, a second signal input terminal of the comparator N1 is connected to a threshold signal Vref1, and a signal output terminal of the comparator N1 is coupled to the switching unit.
By adopting the technical scheme, the first signal input end of the comparator N1 is coupled to the connection node of the force-sensitive resistor RA and the first resistor R1, when the pressure detection signal sent by the connection node of the force-sensitive resistor RA and the first resistor R1 is reduced, the comparator N1 compares the pressure detection signal received by the comparator N1 with the threshold signal Vref1, and outputs the pressure comparison signal to the switch unit when the pressure detection signal is smaller than the threshold signal Vref1, so that the comparison function of the magnitude of the pressure detection signal is realized.
Optionally, the threshold signal Vref1 includes a second resistor R2, a third resistor R3 and a fourth resistor R4, the third resistor R3 and the fourth resistor R4 are connected in series, the third resistor R3 is coupled to the power voltage VCC, the fourth resistor R4 is grounded, the second signal input terminal of the comparator N1 is coupled to the second resistor R2, and the second resistor R2 is coupled to a connection node between the third resistor R3 and the fourth resistor R4.
By adopting the technical scheme, the second resistor R2, the third resistor R3 and the fourth resistor R4 form a reference voltage value, and the reference voltage value is compared with the voltage output by the connection node of the force-sensitive resistor RA and the first resistor R1, so that the voltage is converted into voltage and compared, and then the larger voltage end of the two signal input ends of the comparator N1 is output to the switch unit.
Optionally, the switching unit includes an NPN transistor Q1, a base of the transistor Q1 is coupled to the signal output terminal of the comparator N1, an emitter of the transistor Q1 is grounded, and a collector of the transistor Q1 is coupled to the power voltage VCC.
By adopting the technical scheme, when the base electrode of the triode Q1 receives the pressure comparison signal, the triode Q1 is converted from low level to high level, the triode Q1 is conducted and sends a switch signal to control the infrared emission module to be powered off, and when the button of the remote controller is pressed, the infrared emission module cannot emit an infrared signal; when the triode Q1 does not receive the pressure comparison signal, the triode Q1 is not conducted, the power supply loop of the infrared emission module is in a connected state, and when the button of the remote controller is pressed, the infrared emission module can normally emit an infrared signal.
Optionally, the switch unit further includes a relay KM1, the relay KM1 is coupled to the collector of the transistor Q1 and then coupled to the power voltage VCC, the relay KM1 includes a normally closed contact switch KM1-1, the normally closed contact switch KM1-1 is coupled to the power voltage VCC after being connected in series with the infrared emission module, and the external emission module is grounded.
By adopting the technical scheme, when the triode Q1 is switched on, the coil of the relay KM1 is electrified, the normally closed contact switch KM1-1 is switched off, and the infrared emission module is switched off. When the triode Q1 is not conducted, the relay KM1 loses power, the normally closed contact switch KM1-1 is switched from an open state to a closed state, and at the moment, the button of the remote controller is pressed, so that the infrared emission module can normally emit an infrared signal.
Optionally, the false touch prevention module further comprises a prompt unit, wherein the prompt unit is coupled to the switch unit and sends a prompt signal to remind a user that the remote controller is in a false touch prevention state when receiving the switch signal; the prompting unit comprises a light emitting diode D1, wherein the cathode of the light emitting diode D1 is coupled to the relay KM1, and the anode of the light emitting diode D1 is coupled to the power supply voltage VCC.
Through adopting above-mentioned technical scheme, when relay KM1 got the electricity, emitting diode D1 got the electricity and sent light in order to indicate that the user remote controller was in to prevent the maloperation state this moment, could normally use the remote controller after need removing the pressure to force sensing resistor RA, and convenience of customers differentiates that the remote controller is in to prevent mistake and touches state or normal condition.
In a second aspect, the present application provides an acoustic enclosure. The following technical scheme is adopted:
a sound box comprises a remote control part with a compression structure, wherein the remote control part is applied to a remote control signal processing circuit of the sound box.
Through adopting above-mentioned technical scheme, through the remote control unit installation remote control signal processing circuit with the audio amplifier, use the remote control unit to accomplish the back of controlling to the audio amplifier when the user, operation compact structure triggers the remote control signal processing circuit of audio amplifier for remote control unit opens and prevents the mistake mode of touching, makes remote control unit under the condition of not using, is difficult for being pressed by the mistake or by the foreign object misoperation that arouses the audio amplifier function because of remote control unit's button, prolongs the life of audio amplifier.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the switch unit sends a switch signal to control the infrared emission module to power off after receiving the pressure comparison signal, and at the moment, if the remote controller is pressed by mistake or pressed by a foreign object, the infrared emission module does not send an infrared signal, and the sound box cannot respond, so that the misoperation of the functions of the sound box caused by the fact that the button is pressed by mistake or pressed by the foreign object is avoided, and the service life of the sound box is prolonged;
2. when the relay KM1 is electrified, the light-emitting diode D1 is electrified and emits light to prompt a user that the remote controller is in an anti-misoperation state at the moment, the remote controller can be normally used only after the pressure on the force-sensitive resistor RA is relieved, and the user can conveniently distinguish that the remote controller is in the anti-misoperation state or the normal state;
3. the remote control signal processing circuit of audio amplifier is triggered to operation compact structure for remote control unit opens the mode of preventing mistake and touching, makes remote control unit under the condition of not using, is difficult for being pressed by mistake or being pressed by the foreign object because of remote control unit's button and arouses the maloperation of audio amplifier function, prolongs the life of audio amplifier.
Drawings
FIG. 1 is a circuit diagram of a false touch prevention module in the present embodiment;
fig. 2 is a schematic structural diagram of the sound box in the present embodiment.
Description of reference numerals: 1. a pressure detection unit; 2. a pressure comparison unit; 3. a switch unit; 4. a presentation unit; 5. an infrared emission module; 6. a signal receiving chip; 7. a remote control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to fig. 1-2 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The embodiment of the application discloses a remote control signal processing circuit of a sound box. Referring to fig. 1, the remote control signal processing circuit of the sound box includes an infrared emitting module 5 and a signal receiving chip 6, the infrared emitting module 5 is configured to be installed on a remote controller of the sound box, and the signal receiving chip 6 is configured to receive an infrared signal emitted by the infrared emitting module 5 and perform decoding processing.
The infrared radiation module is coupled with a false touch prevention module, and the false touch prevention module comprises a pressure detection unit 1, a pressure comparison unit 2, a switch unit 3 and a prompt unit 4.
The pressure detection unit 1 is used for being installed on a remote controller, detecting the magnitude of external pressure applied to the remote controller and sending a pressure detection signal; the pressure detection unit 1 comprises a force-sensitive resistor RA, one end of the force-sensitive resistor RA is coupled to a power supply voltage VCC, the other end of the force-sensitive resistor RA is grounded after passing through a first resistor R1, and a connection node of the force-sensitive resistor RA and a first resistor R1 is coupled to the pressure comparison unit 2.
The pressure comparison unit 2 is connected with the pressure detection unit 1 and is provided with a threshold signal Vref1 so as to output a pressure comparison signal when the received pressure detection signal is greater than the threshold signal Vref 1; the pressure comparing unit 2 includes a comparator N1, a first signal input terminal of the comparator N1 is an inverting input terminal coupled to a connection node between the force sensing resistor RA and the first resistor R1, a second signal input terminal of the comparator N1 is a non-inverting input terminal coupled to a threshold signal Vref1, the threshold signal Vref1 is composed of a second resistor R2, a third resistor R3, and a fourth resistor R4, the third resistor R3 is connected in series with the fourth resistor R4, the third resistor R3 is coupled to the power voltage VCC, the fourth resistor R4 is grounded, the non-inverting input terminal of the comparator N1 is coupled to the second resistor R2, the second resistor R2 is coupled to a connection node between the third resistor R3 and the fourth resistor R4, and a signal output terminal of the comparator N1 is coupled to the switch unit 3.
The switch unit 3 is coupled with the pressure comparison unit 2 and the infrared emission module 5, and sends a switch signal to control the infrared emission module 5 to be powered off when receiving the pressure comparison signal; the switch unit 3 comprises an NPN-type triode Q1 and a relay KM1, wherein a base electrode of the triode Q1 is coupled to a signal output end of the comparator N1, an emitter electrode of the triode Q1 is grounded, and a collector electrode of the triode Q1 is coupled to a coil of the relay KM1 in series and then coupled to a power supply voltage VCC; the relay KM1 comprises a normally closed contact switch KM1-1, wherein the normally closed contact switch KM1-1 is connected with the infrared emission module 5 in series and then is coupled to a power supply voltage VCC, and the external emission module is grounded.
The prompting unit 4 is coupled to the switch unit 3 and sends out a prompting signal when receiving the switch signal so as to remind a user that the remote controller is in a false touch prevention state at the moment; the prompt unit 4 includes a light emitting diode D1, a cathode of the light emitting diode D1 is coupled to the relay KM1, and an anode of the light emitting diode D1 is coupled to the power voltage VCC.
The implementation principle of the remote control signal processing circuit of the sound box in the embodiment of the application is as follows: when a user normally operates the remote controller, the pressure on the force-sensitive resistor RA is reduced, the normally-open contact switch KM1-1 is in a closed state, the infrared emission module 5 is in a connected state, the button of the remote controller is pressed, so that the infrared emission module 5 normally emits a signal on the infrared signal sound box to the receiving chip, and the signal is decoded and then controlled to realize the function of the corresponding button after the infrared signal is received by the receiving chip;
by installing the pressing structure for pressing the force-sensitive resistor RA on the remote controller, when a user finishes operation, the pressing structure is operated to enable the pressing structure to generate acting force on the force-sensitive resistor RA, the voltage at two ends of the force-sensitive resistor RA is increased after the force-sensitive resistor RA is stressed, the voltage at the reverse phase input end of the comparator N1 is reduced, when the voltage at the reverse phase input end is smaller than the voltage reference value of the normal phase input end, the signal transmission end of the comparator N1 outputs a pressure comparison signal to the base electrode of the triode Q1, the triode Q1 is conducted, the normally closed contact switch KM1-1 is disconnected, the light-emitting diode D1 is electrified and emits light, the infrared emitting module 5 is powered off, at the moment, if the remote controller is pressed by mistake or pressed by a foreign object, the infrared emitting module 5 does not emit an infrared signal, the signal receiving chip 6 does not receive the infrared signal, and the misoperation of the function of the sound box caused by mistake, the service life of the sound box is prolonged.
The embodiment of the application also discloses a sound box. Referring to fig. 2, an acoustic enclosure comprises a remote control unit 7 with a compact structure, the remote control unit 7 being applied to a remote control signal processing circuit of the acoustic enclosure.
The implementation principle of a sound box in the embodiment of the application is as follows: through the remote control unit 7 installation remote control signal processing circuit with the audio amplifier, use remote control unit 7 to accomplish the back of controlling to the audio amplifier when the user, the remote control signal processing circuit of operation compact structure trigger audio amplifier for remote control unit 7 opens and prevents the mistake and touch the mode, makes remote control unit 7 under the condition not used, is difficult for being pressed by the mistake or being pressed by the foreign object because of remote control unit 7's button and arouses the maloperation of audio amplifier function, prolongs the life of audio amplifier.
The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the application in any way, and any features disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (8)
1. The utility model provides a remote control signal processing circuit of audio amplifier, is including being used for installing infrared emission module (5) on the remote controller of audio amplifier and being used for installing signal reception chip (6) on the audio amplifier, its characterized in that: the infrared radiation module is coupled with an anti-false-touch module, and the anti-false-touch module comprises a pressure detection unit (1) which is arranged on the remote controller, detects the magnitude of external pressure applied to the remote controller and sends out a pressure detection signal;
the pressure comparison unit (2) is connected with the pressure detection unit (1) and is provided with a threshold signal Vref1 so as to output a pressure comparison signal when the received pressure detection signal is greater than the threshold signal Vref 1;
and the switch unit (3) is coupled with the pressure comparison unit (2) and the infrared emission module (5), and sends out a switch signal to control the infrared emission module (5) to be powered off when receiving the pressure comparison signal.
2. The remote control signal processing circuit of a sound box according to claim 1, wherein: the pressure detection unit (1) comprises a force sensitive resistor RA, one end of the force sensitive resistor RA is coupled to a power supply voltage VCC, the other end of the force sensitive resistor RA is grounded after passing through a first resistor R1, and a connection node of the force sensitive resistor RA and a first resistor R1 is coupled to the pressure comparison unit (2).
3. The remote control signal processing circuit of a sound box according to claim 2, wherein: the pressure comparison unit (2) comprises a comparator N1, wherein a first signal input end of the comparator N1 is coupled to a connection node of a force-sensitive resistor RA and a first resistor R1, a second signal input end of the comparator N1 is connected to a threshold signal Vref1, and a signal output end of the comparator N1 is coupled to the switch unit (3).
4. A remote control signal processing circuit for a sound box according to claim 3, wherein: the threshold signal Vref1 includes a second resistor R2, a third resistor R3 and a fourth resistor R4, the third resistor R3 and the fourth resistor R4 are connected in series, the third resistor R3 is coupled to the power voltage VCC, the fourth resistor R4 is grounded, a second signal input terminal of the comparator N1 is coupled to the second resistor R2, and the second resistor R2 is coupled to a connection node between the third resistor R3 and the fourth resistor R4.
5. A remote control signal processing circuit for a sound box according to claim 3, wherein: the switch unit (3) comprises an NPN transistor Q1, the base of the transistor Q1 is coupled to the signal output end of the comparator N1, the emitter of the transistor Q1 is grounded, and the collector of the transistor Q1 is coupled to the power supply voltage VCC.
6. The remote control signal processing circuit of a sound box according to claim 5, wherein: the switch unit (3) further comprises a relay KM1, the relay KM1 is coupled to a power supply voltage VCC after being coupled to a collector of the triode Q1, the relay KM1 comprises a normally closed contact switch KM1-1, the normally closed contact switch KM1-1 is coupled to the power supply voltage VCC after being connected in series with the infrared emission module (5), and the external emission module is grounded.
7. The remote control signal processing circuit of a sound box according to claim 6, wherein: the anti-false-touch module further comprises a prompt unit (4), and the prompt unit (4) is coupled with the switch unit (3) and sends out a prompt signal when receiving the switch signal so as to remind a user that the remote controller is in an anti-false-touch state at the moment; the prompting unit (4) comprises a light emitting diode D1, wherein the cathode of the light emitting diode D1 is coupled to the relay KM1, and the anode of the light emitting diode D1 is coupled to the power supply voltage VCC.
8. A sound box is characterized in that: comprising a remote control unit (7) with a hold-down structure, said remote control unit (7) being applied to a remote control signal processing circuit of a loudspeaker box according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022899220.6U CN213602775U (en) | 2020-12-04 | 2020-12-04 | Remote control signal processing circuit of sound box and sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022899220.6U CN213602775U (en) | 2020-12-04 | 2020-12-04 | Remote control signal processing circuit of sound box and sound box |
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| Publication Number | Publication Date |
|---|---|
| CN213602775U true CN213602775U (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022899220.6U Active CN213602775U (en) | 2020-12-04 | 2020-12-04 | Remote control signal processing circuit of sound box and sound box |
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| Country | Link |
|---|---|
| CN (1) | CN213602775U (en) |
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- 2020-12-04 CN CN202022899220.6U patent/CN213602775U/en active Active
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