CN203788290U - LED glare flashlight and visible light based portable emergency communication system - Google Patents
LED glare flashlight and visible light based portable emergency communication system Download PDFInfo
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- CN203788290U CN203788290U CN201420120159.2U CN201420120159U CN203788290U CN 203788290 U CN203788290 U CN 203788290U CN 201420120159 U CN201420120159 U CN 201420120159U CN 203788290 U CN203788290 U CN 203788290U
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Abstract
The utility model relates to an LED glare flashlight and visible light based portable emergency communication system, and belongs to the technical field of optical communication. The LED glare flashlight and visible light based portable emergency communication system comprises a power supply module, a control module, a lamp core white light LED module and an optical module, and is further provided with a lighting communication control module, wherein the lighting communication control module is composed of a voice chip, a modulation module and a driving module. A receiver is formed by a focusing lens, a photoelectric detector, an operational amplifier, a capacitance-resistance low-pass filter, an audio power amplification chip and an audio signal input earphone. A system transmitter provided with the lighting communication control module converts voices into optical signals during communication, and the receiver restores the optical signals back into voice signals. The LED glare flashlight and visible light based portable emergency communication system increases a visible light communication function on the basis of existing functions of an LED glare flashlight, and is applicable to emergency communication.
Description
Technical field
The utility model belongs to optical communication technique field, relates to a kind of optical communication apparatus.
Background technology
After natural calamity occurs, power equipment and communication equipment are usually in paralyzed state, and it will be very difficult especially at night, locating survivor and understand stranded situation.The distress signal of indicator of trapped personnel is loaded on the LED light of bright light torch, the light that utilizes LED bright light torch to send is realized the function of voice communication, can be used as a kind of staff for help's emergency communication equipment, for the expansion of rescue personnel's rescue work at night provides convenience.But, bright light torch comprises the optical module that LED bright light torch power module, lighting control module, bright light torch wick white light LEDs module, LED bright light torch light cup and lens form on the market at present, be mainly used in illumination, can realize high light, low light level switching, focus on, control light flash and send the functions such as SOS emergency, do not utilize the visible ray resource of bright light torch to realize communication, can not meet in particular cases emergency communication requirement.In recent years, LED highlight flux for bright light torch improves constantly, LED bright light torch maximum range is also in continuous increase, information is added on LED bright light torch again and is communicated, have do not need to apply for radio-frequency spectrum card, do not have electromagnetic interference, to eye-safe, the advantage such as low in energy consumption, so LED bright light torch is applicable to doing mobile communication launch terminal very much.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of portable emergency communication system based on LED bright light torch and visible ray.
The scheme of the utility model technical solution problem is to adopt power module, control module, wick white light LEDs module and optical module form the portable emergency communication system based on LED bright light torch and visible ray, between control module and wick white light LEDs module, functional select switch module is housed, illumination communication control module is installed between functional select switch module and power module, illumination communication control module is by speech chip, modulation module and driver module form, the SP pin of speech chip connects the INP pin of modulation module, the VoP+ output pin of modulation module connects the EN end of driver module, the output linkage function selector switch module of driver module, by condenser lens, photodetector, operational amplifier, rc low pass filter, Audio power amplifier chip and audio signal input earphone form receiver, condenser lens is corresponding with photoelectric probe position, the 1IN-end of photodetector output concatenation operation amplifier, the 1OUT output of operational amplifier connects rc low pass filter, rc low pass filter connects the INP end of Audio power amplifier chip, the output end vo P+ of Audio power amplifier chip connects audio signal input earphone.
system
When during use, LED bright light torch is operated in illumination communication pattern, human body sends voice signal and gathers voice signal by ISD1820 speech chip, by the SP pin of ISD1820 speech chip, be transferred to the INP pin of the Audio power amplifier chip NS4148 modulation module that can produce pulse-width signal, through NS4148 modulation module, voice signal is modulated into the signal of telecommunication that is adapted at transmitting on light carrier, the VoP+ output of NS4148 is connected to the EN end of DD311 driver module, through DD311 driver module bright light torch wick white light LEDs module, complete the light signal that the signal of telecommunication is modulated into the light carrier Strength Changes of LED, adopt the light cup of LED bright light torch and lens to be transmitted in atmospheric channel and to transmit with the form of light beam as optical antenna.
Receiver end optical antenna is comprised of the condenser lens that is fixed on detector front end, by condenser lens, make light focusing on the light receiving surface of receiving terminal photodetector PIN, photodetector converts light signal to the signal of telecommunication, send into the 1IN-end of the operational amplifier NE5532 that does preposition amplification, by NE5532 operational amplifier in conjunction with peripheral resistance, the module that electric capacity forms can play filter action to received signal, the voice signal that the human body that the 1OUT output output of NE5532 operational amplifier contains high frequency noise sends, again by rc low pass filter filter away high frequency noise, then signal is input to the INP end of Audio power amplifier chip NS4148, further amplifying signal, audio signal input earphone by Audio power amplifier chip NS4148 output end vo P+ output, people's ear just can receive emergency voice signal.
system testing
Test macro, by power supply, signal generator, oscilloscope, MP5 music player, audio amplifier, transmitting terminal circuit, commercially available bright light torch lamp holder, magnifying glass, receiving terminal circuit, the compositions such as illuminance meter.
Method of testing, in 127 meters of long corridors, receiving terminal optical antenna and transmitting terminal optical antenna form direct projection link, change transmitting terminal and receiving terminal distance, by magnifying glass, light can be focused on the light receiving surface that is fixed on detector.Connecing light end bias light illumination is 2.2Lux, and white LED driver electric current 400mA is 2V at transmitting terminal to peak-to-peak value of fixed system, the sine wave signal analogue audio frequency input that frequency is 1KHz.
The utility model is in LED bright light torch existing capability, increased visible light communication function, when communication, do not affect illumination, expanded the application of LED bright light torch, improved the market value of LED bright light torch, for emergency communication field provides a kind of Portable novel equipment based on visible light communication, the portable emergency communication system based on LED bright light torch and visible ray has good economic benefit.
Accompanying drawing explanation
Fig. 1 is the utility model reflector electronic-circuit diagram;
Fig. 2 is illumination communication control module electronic-circuit diagram;
Fig. 3 is the utility model receiver electronic-circuit diagram.
Embodiment
The utility model is by power module 1, lighting control module 2, wick white light LEDs module 4 and optical module 5 form, between control module 2 and wick white light LEDs module 4, functional select switch module 3 is housed, illumination communication control module 6 is installed between functional select switch module 3 and power module 1, illumination communication control module 6 is by speech chip 7, modulation module 8 and driver module 9 form, the SP pin of speech chip 7 connects the INP pin of modulation module 8, the VoP+ output pin of modulation module 8 connects the EN end of driver module 9, the output linkage function selector switch module 3 of driver module 9, by condenser lens 10, photodetector 11, operational amplifier 12, rc low pass filter 13, Audio power amplifier chip 14 and audio signal input earphone 15 form receiver, condenser lens 10 is corresponding with photodetector 11 positions, the 1IN-end of photodetector 11 output concatenation operation amplifiers 12, the 1OUT output of operational amplifier 12 connects rc low pass filter 13, rc low pass filter 13 connects the INP end of Audio power amplifier chip 14, the output end vo P+ of Audio power amplifier chip 14 connects audio signal input earphone 15.
Wherein, speech chip 7 models are ISD1820, and modulation module 8 models are NS4148, and driver module 9 models are DD311, and operational amplifier 12 models are NE5532, and Audio power amplifier chip 14 models are NS4148.
Claims (2)
1. the portable emergency communication system based on LED bright light torch and visible ray, comprise power module, control module, wick white light LEDs module and optical module, it is characterized in that: between control module and wick white light LEDs module, functional select switch module is housed, illumination communication control module is installed between functional select switch module and power module, illumination communication control module is by speech chip, modulation module and driver module form, the SP pin of speech chip connects the INP pin of modulation module, the VoP+ output pin of modulation module connects the EN end of driver module, the output linkage function selector switch module of driver module, by condenser lens, photodetector, operational amplifier, rc low pass filter, Audio power amplifier chip and audio signal input earphone form receiver, condenser lens is corresponding with photoelectric probe position, the 1IN-end of photodetector output concatenation operation amplifier, the 1OUT output of operational amplifier connects rc low pass filter, rc low pass filter connects the INP end of Audio power amplifier chip, the output end vo P+ of Audio power amplifier chip connects audio signal input earphone.
2. communication system according to claim 1, is characterized in that: speech chip model is ISD1820, and modulation module model is NS4148, and driver module model is DD311, and operational amplifier model is NE5532, and Audio power amplifier chip model is NS4148.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420120159.2U CN203788290U (en) | 2014-03-17 | 2014-03-17 | LED glare flashlight and visible light based portable emergency communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420120159.2U CN203788290U (en) | 2014-03-17 | 2014-03-17 | LED glare flashlight and visible light based portable emergency communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788290U true CN203788290U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420120159.2U Expired - Fee Related CN203788290U (en) | 2014-03-17 | 2014-03-17 | LED glare flashlight and visible light based portable emergency communication system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203788290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330311A (en) * | 2016-08-30 | 2017-01-11 | 上海大学 | Intelligent traffic police flashlight with directional sound propagation function |
| CN110868255A (en) * | 2019-09-25 | 2020-03-06 | 南京邮电大学 | Flashlight audio communication device based on visible light communication |
-
2014
- 2014-03-17 CN CN201420120159.2U patent/CN203788290U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330311A (en) * | 2016-08-30 | 2017-01-11 | 上海大学 | Intelligent traffic police flashlight with directional sound propagation function |
| CN110868255A (en) * | 2019-09-25 | 2020-03-06 | 南京邮电大学 | Flashlight audio communication device based on visible light communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20150317 |
|
| EXPY | Termination of patent right or utility model |