CN103874289A - External LED (light-emitting diode) light-emitting device based on mobile phone audio signal control - Google Patents
External LED (light-emitting diode) light-emitting device based on mobile phone audio signal control Download PDFInfo
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- CN103874289A CN103874289A CN201410059528.6A CN201410059528A CN103874289A CN 103874289 A CN103874289 A CN 103874289A CN 201410059528 A CN201410059528 A CN 201410059528A CN 103874289 A CN103874289 A CN 103874289A
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Abstract
The invention relates to an external LED (light-emitting diode) light-emitting device based on mobile phone audio signal control. The external LED light-emitting device comprises an audio plug, a switch control module, an LED lamp connected to the output end of the switch control module, and an audio-direct current converter for supplying power to the device; the audio plug is connected with a mobile phone by an audio socket of the mobile phone, two paths of audio signals of the output end of the audio plug are respectively connected to the input end of the switch control module and the input end of the audio-direct current converter, and the on-off of the LED lamp is controlled by the switch control module via the corresponding audio signal. The device is controlled and powered via the audio signal of the audio interface of the existing mobile phone, a built-in special decoding chip and a built-in power supply battery are not needed, the structure is compact, the cost is low, and the external LED light-emitting device can serve as a state reminding lamp of the mobile phone and can also serve as an electro-optical converting and sending device of the modulated audio signal from the mobile phone.
Description
Technical field
The present invention relates to a kind of external LED light-emitting device based on handset audio signal controlling, use mainly as mobile phone state prompting with from current to light inversion and the transmitter of the modulated audio signal of mobile phone.
Background technology
The use amount of mobile phone is huge at present, particularly smart mobile phone.Intelligent machine has powerful function, can be by the function of enriching mobile phone by various software.
Due to Cost Problems, large many parts smart mobile phone does not all have integrated LED status indicator lamp function on the market at present, in the situation that having missed call and unread short messages, and can only be by carrying out display reminding at mobile phone screen, need to light mobile phone screen and just can see, can not be known to user in time.
Although part machine can carry out condition prompting by built-in LED photoflash lamp, because smart mobile phone fragmentation is serious, the control interface disunity of built-in LED photoflash lamp, causes LED photoflash lamp controllability poor.Add LED photoflash lamp postposition, be used for the practicality relative mistake of indicator light.
Summary of the invention
In view of the above-mentioned defect that smart mobile phone exists, the invention provides a kind of external LED light-emitting device based on handset audio signal controlling, and mobile phone state LED light reminding method based on handset audio signal
;it utilizes the audio signal of the existing audio interface of mobile phone (receiver J-Horner) output to control the variation of LED light, realizes the LED light prompting of mobile phone state.
The external LED light-emitting device that the present invention is based on handset audio signal controlling, comprising: an audio jack, and switch control module, is connected in the LED lamp of this switch control module output, and is the audio frequency-DC converter of this device power supply; Described audio jack is connected with mobile phone by the audio sockets of mobile phone, the two-way audio signal of its output connects respectively the input of described switch control module, the input of audio frequency-DC converter, and a road audio signal is by the light on and off of described switch control module control LED lamp.
Wherein, the audio signal of the L channel output of described audio jack connects the input of described switch control module, to control the light on and off of LED lamp; The audio signal of the R channel output of described audio jack connects the input of described audio frequency-DC converter.
The audio signal of the R channel output of described audio jack connects the input of described switch control module, to control the light on and off of LED lamp; The audio signal of the L channel output of described audio jack connects the input of described audio frequency-DC converter.
Described audio frequency-DC converter comprises booster circuit, rectifier and filter, and described booster circuit, filter are connected to input and the output of described rectifier.
Described booster circuit comprises a self coupling step-up transformer.The step-up ratio of this self coupling step-up transformer can be 8-12, can be that 1v audio signal boosts to 8-12v by peak-to-peak value.
Described rectifier is full-wave rectifier or bridge rectifier.
Described audio jack is that diameter is the headset plug of 3.5mm or 2.5mm.
Described switch control module is made up of a switch triode and biasing circuit thereof.
A mobile phone state LED light reminding method based on handset audio signal, comprises the following steps:
Draw the two-way audio signal of handset audio socket by an audio jack;
Wherein a road audio signal is inputted a switch control module, and then by this switch control module driving LED luminous prompting mobile phone state; Meanwhile, another road audio signal input audio frequency-DC converter, converts direct voltage to this switch control module and LED power supply.
Wherein, described mobile phone state refers to missed call state, unread short messages state and the charged state of mobile phone.
Mobile phone without putting through carrys out described in electricity condition LED take bright 1s, the 2s that goes out as cycle flash for prompting; Described in unread short messages state, LED lamp is pointed out in the 1s breath light mode that gradually bright, 1s gradually goes out; Described in charged state, LED points out in normal bright mode.
This external LED light-emitting device is controlled and is powered by the audio signal of existing mobile audio interface, does not need built-in special decoding chip and built-in supplying cell, compact conformation, and cost is low.
This external LED light-emitting device can be taken into account two kinds of applications, and the firstth, can be as the condition prompting lamp of mobile phone, as the missed call of mobile phone, unread short messages are reminded and charged state prompting; The secondth, can be used as current to light inversion and the transmitting terminal device of data, the Data Modulation that will send in mobile phone, in audio signal, then by driving LED lamp, is sent data with the light on and off form of LED light.
Accompanying drawing explanation
Fig. 1 is the external LED light-emitting device one embodiment schematic diagram that the present invention is based on handset audio signal controlling.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, the external LED light-emitting device 1 of embodiment based on handset audio signal controlling comprises: an audio jack 11, switch control module 12, the LED lamp 13 that is connected in these switch control module 12 outputs and audio frequency-DC converter 14.Audio jack 11 is connected with mobile phone 2 by the audio sockets 21 of mobile phone 2, the input of the two-way audio signal difference connecting valve control module 12 of its output, the input of audio frequency-DC converter 14.
Audio jack 11 for diameter be the headset plug of 3.5mm or 2.5mm.Frequently sound joint 11 has L channel output, R channel output and ground wire.The audio signal of the L channel output of audio jack 11 connects the input of described switch control module 12, controls the light on and off of LED lamp 13 by switch control module 12; The audio signal of the R channel output of audio jack 11 connects the input of described audio frequency-DC converter 14, and this audio signal is transformed into direct voltage by audio frequency-DC converter 14 and powers to whole device 1.
Audio frequency-DC converter 14 comprises booster circuit, rectifier and filter, and described booster circuit, filter are connected to input and the output of described rectifier.Described booster circuit adopts a self coupling step-up transformer, and the step-up ratio of this self coupling step-up transformer is 10, can be that 1v audio signal boosts to 10v by peak-to-peak value.Described rectifier adopts full-wave rectifier or bridge rectifier etc.
The audio signal of the R channel output of audio jack 11 through boosting, rectification and filtering, finally obtain direct voltage and power to light-emitting device.
The step that realizes LED light prompting mobile telephone set state by Fig. 1 embodiment LED light-emitting device 1 is as follows: audio jack 11 is inserted to the audio sockets 21 of mobile phone 2, drawn left and right sound channels audio signal; Make L channel or right channel audio signal input switch control module 12, and then by these switch control module 12 driving LED lamp 13 luminous prompting mobile phone states; Meanwhile, R channel or left channel audio signal input audio frequency-DC converter 14, convert direct voltage to and power to this switch control module 12 and LED lamp 13.
Wherein, mobile phone state comprises missed call state, unread short messages state and charged state etc.
The brightness of LED lamp is decided by supply power voltage and the switching frequency of LED.In the situation that supply power voltage is certain, can
1). in the audio signal of exporting by change mobile phone 2 audio sockets 21, the duty of square wave is recently controlled the brightness of LED lamp;
2). by opening and stop audio frequency and export to control the light on and off of LED lamp.
When mobile phone charged state, the square-wave signal that audio signal is fixed frequency, and remain in continual output state; Corresponding LED lamp is pointed out in normal bright mode, with fixed switching frequency control LED lamp.
When mobile phone without putting through carrys out electricity condition, audio signal is to open output 1s, and the mode that stops exporting 2s is exported; Corresponding LED lamp carries out flash for prompting with the periodic mode of bright 1s, the 2s that goes out.
When mobile phone unread short messages state, LED lamp is pointed out in the 1s breath light mode that gradually bright, 1s gradually goes out.In the gradually bright time period of 1s, the variation of the duty cycle square wave in audio signal is now from high to low; Gradually go out the time period at 1s, the variation of duty cycle square wave is from low to high.
The present invention also can be used as from the current to light inversion of the audio signal of Data Modulation of mobile phone and transmitter and uses.
By specific embodiment, the present invention has been done to detailed explanation above, these detailed descriptions can not think that the present invention only only limits to the content of these embodiment.Those skilled in the art conceive according to the present invention, these descriptions any improvement of making in conjunction with general knowledge known in this field, be equal to replacement scheme, all should be included in the protection range of its claim.
Claims (10)
1. the external LED light-emitting device based on handset audio signal controlling, is characterized in that comprising:
One audio jack, switch control module, is connected in the LED lamp of this switch control module output, and is the audio frequency-DC converter of this device power supply;
Described audio jack is connected with mobile phone by the audio sockets of mobile phone, and the two-way audio signal of its output connects respectively the input of described switch control module, the input of audio frequency-DC converter.
2. external LED light-emitting device according to claim 1, is characterized in that: the L channel output of described audio jack or the audio signal of R channel output connect the input of described switch control module, to control the light on and off of LED lamp; The R channel output of described audio jack or the audio signal of L channel output connect the input of described audio frequency-DC converter.
3. external LED light-emitting device according to claim 1 and 2, it is characterized in that: described audio frequency-DC converter comprises booster circuit, rectifier and filter, described booster circuit, filter are connected to input and the output of described rectifier.
4. external LED light-emitting device according to claim 3, is characterized in that: described booster circuit is a self coupling step-up transformer.
5. external LED light-emitting device according to claim 3, is characterized in that: described rectifier is full-wave rectifier or bridge rectifier.
6. external LED light-emitting device according to claim 1, is characterized in that: described audio jack is that diameter is the headset plug of 3.5mm or 2.5mm.
7. external LED light-emitting device according to claim 1 and 2, is characterized in that: described switch control module is made up of a switch triode and biasing circuit thereof.
8. the mobile phone state LED light reminding method based on handset audio signal, is characterized in that comprising the following steps:
Draw the two-way audio signal of handset audio socket by an audio jack;
Wherein a road audio signal is inputted a switch control module, and then by this switch control module driving LED luminous prompting mobile phone state; Meanwhile, another road audio signal input audio frequency-DC converter, converts direct voltage to this switch control module and LED power supply.
9. reminding method according to claim 1, is characterized in that: described mobile phone state refers to missed call state, unread short messages state and the charged state of mobile phone.
10. reminding method according to claim 9, is characterized in that: wherein, LED is take bright 1s, the 2s that goes out as cycle flash for prompting described in missed call state; Described in unread short messages state, LED lamp is pointed out in the 1s breath light mode that gradually bright, 1s gradually goes out; Described in charged state, LED points out in normal bright mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410059528.6A CN103874289A (en) | 2014-02-21 | 2014-02-21 | External LED (light-emitting diode) light-emitting device based on mobile phone audio signal control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410059528.6A CN103874289A (en) | 2014-02-21 | 2014-02-21 | External LED (light-emitting diode) light-emitting device based on mobile phone audio signal control |
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| CN103874289A true CN103874289A (en) | 2014-06-18 |
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| CN201410059528.6A Pending CN103874289A (en) | 2014-02-21 | 2014-02-21 | External LED (light-emitting diode) light-emitting device based on mobile phone audio signal control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125687A (en) * | 2014-07-07 | 2014-10-29 | 联想(北京)有限公司 | Control method and device of intelligent lamp system as well as mobile terminal and intelligent lamp |
| CN105447429A (en) * | 2015-07-23 | 2016-03-30 | 上海易码信息科技有限公司 | Light pulse communication method and system |
| CN105516448A (en) * | 2015-09-14 | 2016-04-20 | 浙江大学 | Party mobile phone storage device based on infrared photoelectric pair transistors |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| BRPI0805488A2 (en) * | 2008-12-30 | 2010-09-08 | Rui Da Silva Faria | cell phone ringer alert relay |
| CN202889435U (en) * | 2012-11-28 | 2013-04-17 | 广东欧珀移动通信有限公司 | Dustproof plug for headset |
| CN103118203A (en) * | 2013-03-12 | 2013-05-22 | 林祝发 | Personal medical product design method based on audio port |
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2014
- 2014-02-21 CN CN201410059528.6A patent/CN103874289A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0805488A2 (en) * | 2008-12-30 | 2010-09-08 | Rui Da Silva Faria | cell phone ringer alert relay |
| CN202889435U (en) * | 2012-11-28 | 2013-04-17 | 广东欧珀移动通信有限公司 | Dustproof plug for headset |
| CN103118203A (en) * | 2013-03-12 | 2013-05-22 | 林祝发 | Personal medical product design method based on audio port |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125687A (en) * | 2014-07-07 | 2014-10-29 | 联想(北京)有限公司 | Control method and device of intelligent lamp system as well as mobile terminal and intelligent lamp |
| CN105447429A (en) * | 2015-07-23 | 2016-03-30 | 上海易码信息科技有限公司 | Light pulse communication method and system |
| CN105516448A (en) * | 2015-09-14 | 2016-04-20 | 浙江大学 | Party mobile phone storage device based on infrared photoelectric pair transistors |
| CN105516448B (en) * | 2015-09-14 | 2018-10-26 | 浙江大学 | Based on infrared electro to the party mobile phone storage device of pipe |
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Application publication date: 20140618 |