CN110649974B - Circuit of intelligent life jacket based on ultraviolet light communication - Google Patents
Circuit of intelligent life jacket based on ultraviolet light communication Download PDFInfo
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- CN110649974B CN110649974B CN201911003965.5A CN201911003965A CN110649974B CN 110649974 B CN110649974 B CN 110649974B CN 201911003965 A CN201911003965 A CN 201911003965A CN 110649974 B CN110649974 B CN 110649974B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C9/00—Life-saving in water
- B63C9/08—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
- B63C9/11—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like covering the torso, e.g. harnesses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C9/00—Life-saving in water
- B63C2009/0017—Life-saving in water characterised by making use of satellite radio beacon positioning systems, e.g. the Global Positioning System [GPS]
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Abstract
The invention discloses a circuit of an intelligent life jacket based on ultraviolet light communication, and belongs to the technical field of communication. Circuit of intelligence life vest based on ultraviolet light communication, transmitting terminal and receiving terminal pass through wireless communication transmission information, and the transmitting terminal includes battery one, battery two, big dipper orientation module and vital sign sensor, and wherein, the V of direct current steady voltage chip one is connected respectively to the positive negative pole of battery one IN The output end of the first direct current voltage stabilizing chip is connected with one end of an ultraviolet LED array, the other end of the ultraviolet LED array is connected with one end of a current limiting resistor, and the other end of the current limiting resistor is connected with a collector end of a triode; a circuit of the intelligent life jacket based on ultraviolet light communication is designed. The safety and compatibility of the communication process of the intelligent life jacket are improved, and the rescue ability of the intelligent life jacket is effectively enhanced.
Description
Technical Field
The invention relates to a circuit of an intelligent life jacket based on ultraviolet light communication, and belongs to the technical field of communication.
Background
Along with the economic development of China, the contradiction between shipping business prosperity and safe production conditions is increasingly highlighted, and meanwhile, the water traffic accidents have the characteristics of large loss, difficulty in life and property rescue of people at sea and large social influence range. The life jacket is an important guarantee for the life of people falling into water in case of water accidents, the existing life jacket has insufficient functions, and after people fall into water, the life jacket cannot provide important information such as positioning information and vital signs of people falling into water for rescue actions. Passive search and rescue wastes a large amount of rescue time and resources, and the rescue efficiency and the search and rescue success rate are reduced.
Disclosure of Invention
In order to overcome the defects, the research content of related researchers is provided by designing an intelligent life jacket capable of providing effective rescue information in recent years, and the circuit of the intelligent life jacket is a key content of research.
The technical scheme adopted by the invention is as follows:
the circuit of intelligence life vest based on ultraviolet light communication, sending terminal and receiving terminal pass through wireless communication transmission information, and the sending terminal includes battery one, battery two, big dipper orientation module and vital sign sensor, and wherein, the V of direct current steady voltage chip one is connected respectively to the positive negative pole of battery one IN The output end of the first direct current voltage stabilizing chip is connected with one end of an ultraviolet LED array, the other end of the ultraviolet LED array is connected with one end of a current limiting resistor, and the other end of the current limiting resistor is connected with a collector end of a triode; the serial port communication end of the Beidou positioning module is connected with the serial port pin end of the first main control chip, the I/O port end of the first main control chip is connected with one end of a resistor R11, the other end of the resistor R11 is connected with the in-phase end of the first amplifier, the output end of the first amplifier is connected with one end of a capacitor C13, and the other end of the capacitor C13 is connected with the base level of the triode; (ii) a The vital sign sensor is connected with an A/D conversion pin of the first main control chip; the positive electrode and the negative electrode of the second storage battery are connected with a capacitor C2 in series, the positive electrode and the negative electrode of the second storage battery are connected with the second direct-current voltage stabilizing chip in series, and the positive electrode of the second storage battery is connected with the V of the second direct-current voltage stabilizing chip IN The negative electrode of the second storage battery is connected with the GND end of the second direct-current voltage stabilizing chip; v of DC voltage stabilization chip II OUT The end of the resistor R12 is connected with one end of a resistor R12, the other end of the resistor R12 is connected with the negative electrode of the input end of the amplifier I, the GND end of the direct current voltage stabilizing chip II is connected with one end of a resistor R13, the other end of the resistor R13 is connected with the other end of the resistor R12, and the emitter of the triode is connected with the GND end of the direct current voltage stabilizing chip II; the receiving end comprises a PIN photovoltaic diode, an amplifier II, an amplifier III and a main control chip II, one end of the PIN photovoltaic diode is grounded, the other end of the PIN photovoltaic diode is connected with the input cathode of the amplifier II, the other end of the PIN photovoltaic diode is connected with one end of a capacitor C1,the other end of the capacitor C1 is connected with the output end of the amplifier II, one end of the resistor Rft is connected with one end of the capacitor C1, the other end of the resistor Rft is connected with one end of the resistor R1, the other end of the resistor R1 is connected with the other end of the capacitor C1 and is connected with the output end of the amplifier II, and the output end of the amplifier II is connected with the anode of the input end of the amplifier III; one end of the resistor R2 is connected with the middle part of the resistor Rft and the resistor R1, and the other end of the resistor R2 is grounded; one end of a resistor R4 is connected with one end of a resistor R3, the joint of the resistor R4 and the resistor R3 is connected with the negative electrode of the input end of the amplifier III, the other end of the resistor R4 is connected with the ground, the other end of the resistor R3 is connected with the output end of the amplifier III, the output end of the amplifier III is connected with the A/D conversion pin end of the main control chip II, the general I/O port end of the main control chip II is connected with the display module, and the general I/O port end of the main control chip II is connected with the acousto-optic module.
The capacitors C1 and C2 are all variable capacitors, so that the capacitors with proper sizes are selected according to different output voltages, the power supply voltage of each part of the circuit is prevented from changing due to load change, and the rectified pulsating direct current voltage is changed into relatively stable direct current voltage by utilizing the effect of the charge-discharge characteristics of the capacitors.
The resistances of the resistors R1, R2 and R3 are variable resistors, and the resistances of the resistors R11, R12 and R13 are variable resistors, so that the different combinations of the resistances of the resistors R1, R2 and R3 and the different combinations of the resistances of the resistors R11, R12 and R13 are utilized to realize different amplification factors of the photocurrent generated by the PIN photovoltaic diode.
The resistance value of the current-limiting resistor is a variable resistor, so that the advantage is that the proper resistance value of the current-limiting resistor is selected according to the difference of the working current of the ultraviolet LED, so that the working current of the LED does not exceed the rated working current, and the LED is protected.
The beneficial effects of the invention are: aiming at the defect that the traditional communication technology used by the existing intelligent life jacket cannot simultaneously transmit high quality in an underwater channel and an atmospheric channel, the circuit of the intelligent life jacket based on ultraviolet light communication is designed, the adaptability of the intelligent life jacket to information transmission in a complex environment is improved by means of the scattering propagation characteristic of ultraviolet light, the communication safety is effectively improved, and the intelligent life jacket has a better communication effect compared with the intelligent life jacket using the traditional wireless communication technology. Aiming at the characteristics of the applicable environment and the ultraviolet light communication technology of the intelligent life jacket, the invention tries to apply the ultraviolet light communication technology to the intelligent life jacket for the first time, and has novelty and originality.
An intelligent life jacket circuit based on an ultraviolet light communication technology transmits important information such as Beidou positioning information and life signs of people falling into water acquired by the intelligent life jacket to rescuers. Influenced by the use environment factors of the intelligent life jacket, the intelligent life jacket can transmit in the atmosphere and can transmit information in the underwater environment, so that the intelligent life jacket is required to be capable of coping with complex communication environments. The intelligent life jacket can detect the position information and the life state information of people falling into water through an intelligent sensing technology, the help seeking information transmission is realized through an intelligent life jacket circuit based on an ultraviolet light communication technology, the traditional passive search and rescue is changed into active search and rescue, the interaction between a falling-into-water target and rescue force is realized, and the locating efficiency and the search and rescue success rate are greatly improved.
In the intelligent life jacket, the information is transmitted by utilizing the circuit of the intelligent life jacket, which is a necessary guarantee for realizing active rescue seeking of the intelligent life jacket. The use scene of the intelligent life jacket determines the complexity of a transmission carrier of the intelligent life jacket, so that the intelligent life jacket is required to effectively transmit rescue information in the atmosphere and also effectively transmit rescue information in water. The traditional underwater wireless communication technology has the defects of low safety, high error rate and the like. Therefore, the invention provides information transmission for the intelligent life jacket by utilizing the ultraviolet communication technology and designs the circuit of the intelligent life jacket based on the ultraviolet communication. The safety and the compatibility of the communication process of the intelligent life jacket are improved, and the rescue ability of the intelligent life jacket is effectively enhanced.
Drawings
Fig. 1 is a circuit diagram of a transmitting end of the present invention.
FIG. 2 is a circuit diagram of a receiving terminal according to the present invention.
Fig. 3 (a) is a schematic diagram showing the first position of the life jacket.
Fig. 3 (b) is a schematic diagram of the position of the invention installed on a life jacket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3 (a) and 3 (b): the transmitting end is wrapped by a waterproof material and placed inside the life jacket, the vital sign sensor in the transmitting end is placed on the inner surface of the life jacket close to the neck of a human body, the ultraviolet LED array is placed on the outer surface of the life jacket, and the Beidou positioning module is placed on the outer surface of the life jacket. The receiving end is placed inside the equipment used by the search and rescue personnel.
As shown in fig. 1-2: the circuit of intelligent life vest based on ultraviolet light communication, sending terminal and receiving terminal pass through wireless communication full duplex transfer information, and the sending terminal includes battery one, battery two, big dipper orientation module and vital sign sensor, and wherein, the V of direct current steady voltage chip one is connected respectively to the positive negative pole of battery one IN The output end of the first direct current voltage stabilizing chip is connected with one end of an ultraviolet LED array, the other end of the ultraviolet LED array is connected with one end of a current limiting resistor, and the other end of the current limiting resistor is connected with a collector end of a triode; the serial port communication end of the Beidou positioning module is connected with the serial port pin end of the first main control chip, the I/O port end of the first main control chip is connected with one end of a resistor R11, the other end of the resistor R11 is connected with the in-phase end of the first amplifier, the output end of the first amplifier is connected with one end of a capacitor C13, and the other end of the capacitor C13 is connected with the base level of the triode; the vital sign sensor is connected with an A/D conversion pin of the first main control chip; the positive electrode and the negative electrode of the second storage battery are connected with a capacitor C2 in series, the positive electrode and the negative electrode of the second storage battery are connected with the second direct current voltage stabilizing chip in series, and the positive electrode of the second storage battery is connected with the V of the second direct current voltage stabilizing chip IN The negative electrode of the second storage battery is connected with the GND end of the second direct-current voltage stabilizing chip; v of direct current voltage stabilization chip II OUT The terminal is connected with one terminal of a resistor R12The other end of the R12 is connected with the negative electrode of the input end of the first amplifier, the GND end of the second direct-current voltage stabilizing chip is connected with one end of the resistor R13, and the emitter of the triode is connected with the GND end of the second direct-current voltage stabilizing chip; the other end of the resistor R13 is connected with the other end of the resistor R12; the receiving end comprises a PIN photovoltaic diode, an amplifier II, an amplifier III and a main control chip II, one end of the PIN photovoltaic diode is grounded, the other end of the PIN photovoltaic diode is connected with the input cathode of the amplifier II, the other end of the PIN photovoltaic diode is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with the output end of the amplifier II, one end of a resistor Rft is connected with one end of the capacitor C1, the other end of the resistor Rft is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the other end of the capacitor C1 and is connected with the output end of the amplifier II, and the output end of the amplifier II is connected with the anode of the input end of the amplifier III; one end of the resistor R2 is connected with the middle part of the resistor Rft and the resistor R1, and the other end of the resistor R2 is grounded; one end of the resistor R4 is connected with one end of the resistor R3, the joint of the resistor R4 and the resistor R3 is connected with the negative electrode of the input end of the amplifier III, the other end of the resistor R4 is connected with the ground, the other end of the resistor R3 is connected with the output end of the amplifier III, the output end of the amplifier III is connected with the A/D conversion pin end of the main control chip II, the general I/O port end of the main control chip II is connected with the display module, and the general I/O port end of the main control chip II is connected with the acousto-optic module.
The model ATGM331C of the Beidou positioning module.
Model number CM-01B of Vital sign sensor.
The model number of the first storage battery is 12V-8400.
The model number of the second storage battery is 12V-8400.
The model number of the capacitor C1 is 16V4700.
The capacitor C2 is model 16V4700.
The model number of the capacitor C3 is 0805CG330J500NT.
The optical module is model ST011.
The display module adopts a model AKT-4.3TFTLCD.
The models of the first main control chip and the second main control chip are both STC15F2K24AS.
The vital sign sensor and the Beidou positioning module are responsible for acquiring Beidou positioning information acquired by the intelligent life jacket and vital sign information of wearers including but not limited to body temperature, pulse, blood pressure and the like, signals generated by the sensors used in the intelligent life jacket comprise digital signals and analog signals, the vital sign sensor generates the analog signals, the Beidou positioning module generates the digital signals, in order to facilitate signal processing, different information needs to be converted into digital signals to facilitate signal transmission, the vital sign sensor is connected with an A/D converter pin of the first main control chip, and the Beidou positioning module is connected with a serial port end pin of the first main control chip;
the Beidou positioning module in the first main control chip is connected with the serial port receiving module, an A/D converter pin of the first main control chip is connected with the vital sign sensor, a serial port end pin is connected with the Beidou positioning sensor, information transmitted by the Beidou positioning sensor is acquired and converted into digital signals, and the acquired information is transmitted to the first main control chip in a digital signal form to be processed;
because the environment of the intelligent life jacket is relatively complex in the using process, the intelligent life jacket can be directly transmitted through the earth surface atmosphere in the transmission process, or can be transmitted through the underwater transmission for a certain distance and then enters the earth surface atmosphere, the interference caused by the multipath effect can be effectively reduced by coding and modulating the ultraviolet light signals for transmitting information, meanwhile, the transmission quality can be greatly improved by the characteristic that the ultraviolet light signals are transmitted in a scattering manner, the digital signals are processed by using a signal processing unit in a preset coding and modulation mode, and the software part of the first main control chip is responsible for realizing coding and modulation;
the ultraviolet LED array driving unit converts the electric signal containing the rescue information processed by the signal processing unit into an ultraviolet signal and sends the ultraviolet signal outwards, and the process is that the first main control chip inputs the processed digital electric signal to the in-phase end of the first amplifier through the resistor R11 through the I/O port. When the voltage of a digital signal passing through the resistor R11 is higher than a reference voltage, the amplifier I outputs a high level flowing through the capacitor R3, otherwise, outputs a low level flowing through the capacitor R3, the content of the digital signal flowing through the capacitor C3 is the same as that of the processed digital electric signal, the tailing phenomenon of a driving signal is avoided through the voltage comparator, the driving signal drives the on-off of the triode, so that the current flowing through the ultraviolet LED array is driven, and the ultraviolet LED array sends an ultraviolet light signal containing rescue information to the periphery;
in order to better scatter the ultraviolet light signals to the periphery, the emission angle of the used ultraviolet LEDs is not less than 60 degrees, meanwhile, a plurality of ultraviolet LEDs are used for layout to ensure the propagation range of the signals, and meanwhile, the emission power is larger than 1W to ensure the propagation distance of the signals.
The PIN photovoltaic diode is used as a photoelectric converter of the ultraviolet light signal in the receiving end, the PIN photovoltaic diode converts the ultraviolet light signal into an electric signal in a form of photocurrent, the magnitude of the photocurrent is in the magnitude order of uA to mA, a trans-resistance amplifying circuit is required to amplify the photocurrent signal and convert the photocurrent signal into a standard voltage signal, the specific flow is that after the PIN photovoltaic diode receives the ultraviolet light signal, the photocurrent is generated, and the current passes through a resistor R fT And the voltage signal passes through a second-stage amplifying circuit consisting of an amplifier III, a resistor R3 and a resistor R4, and then the input voltage signal is amplified to a proper size and transmitted to an A/D conversion pin of a main control chip II.
In order to ensure the quality of signal transmission, the signals are coded and modulated at the sending end, so that voltage signals amplified by the ultraviolet signal receiving circuit unit need to be analyzed, the output voltage of the amplifier III is connected with the pins of the A/D converter of the main control chip II, the main control chip II judges the received voltage signals through the A/D converter to obtain digital signals, then corresponding demodulation and decoding operations are carried out on the signals through the software part of the main control chip II according to the modulation and coding mode preset by the sending end, the demodulated and decoded signals are original signals containing positioning information and statement physical sign information, and finally the decoded and demodulated information is transmitted to the information expression unit;
the information expression unit comprises display module assembly and reputation module, and the I/O mouth of main control chip two links to each other in display module assembly and reputation module respectively, and the standard signal of telecommunication after will analyzing gives display module assembly and reputation module, further restores into the process of rescue information, and this process is the recurrence to the information of sending end information source transmission, uses multiple expression modes such as display screen, reputation system to show information, realizes the transmission of rescue information.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Circuit of intelligence life vest based on ultraviolet light communication, its characterized in that: the transmitting terminal and the receiving terminal transmit information through wireless communication, the transmitting terminal comprises a first storage battery, a second storage battery, a Beidou positioning module and a vital sign sensor, wherein the positive electrode and the negative electrode of the first storage battery are respectively connected with a V of a first direct-current voltage stabilizing chip IN The output end of the first direct current voltage stabilizing chip is connected with one end of an ultraviolet LED array, the other end of the ultraviolet LED array is connected with one end of a current limiting resistor, and the other end of the current limiting resistor is connected with a collector end of a triode; the serial port communication end of the Beidou positioning module is connected with the serial port pin end of the first main control chip, the I/O port end of the first main control chip is connected with one end of a resistor R11, the other end of the resistor R11 is connected with the in-phase end of the first amplifier, the output end of the first amplifier is connected with one end of a capacitor C13, and the other end of the capacitor C13 is connected with the base electrode of the triode; the vital sign sensor is connected with an A/D conversion pin of the first main control chip; the positive electrode and the negative electrode of the second storage battery are connected with a capacitor C2 in series, the positive electrode and the negative electrode of the second storage battery are connected with the second direct current voltage stabilizing chip in series, and the positive electrode of the second storage battery is connected with the V of the second direct current voltage stabilizing chip IN The negative electrode of the second storage battery is connected with the GND end of the second direct-current voltage stabilizing chip; v of direct current voltage stabilization chip II OUT The end of the resistor R12 is connected with one end of the resistor R12, and the other end of the resistor R12 is connected with the amplifierThe negative electrode of the input end of the first diode, the GND end of the direct-current voltage stabilizing chip II is connected with one end of a resistor R13, the other end of the resistor R13 is connected with the other end of a resistor R12, and the emitting electrode of the triode is connected with the GND end of the direct-current voltage stabilizing chip II; the receiving end comprises a PIN photovoltaic diode, an amplifier II, an amplifier III and a main control chip II, one end of the PIN photovoltaic diode is grounded, the other end of the PIN photovoltaic diode is connected with the input cathode of the amplifier II, the other end of the PIN photovoltaic diode is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with the output end of the amplifier II, one end of a resistor Rft is connected with one end of the capacitor C1, the other end of the resistor Rft is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the other end of the capacitor C1 and is connected with the output end of the amplifier II, and the output end of the amplifier II is connected with the anode of the input end of the amplifier III; one end of the resistor R2 is connected with the middle part of the resistor Rft and the resistor R1, and the other end of the resistor R2 is grounded; one end of the resistor R4 is connected with one end of the resistor R3, the joint of the resistor R4 and the resistor R3 is connected with the negative electrode of the input end of the amplifier III, the other end of the resistor R4 is connected with the ground, the other end of the resistor R3 is connected with the output end of the amplifier III, the output end of the amplifier III is connected with the A/D conversion pin end of the main control chip II, the general I/O port end of the main control chip II is connected with the display module, and the general I/O port end of the main control chip II is connected with the acousto-optic module.
2. The circuit of an intelligent life jacket based on ultraviolet light communication as claimed in claim 1, wherein: the capacitor C1 is a variable capacitor.
3. The circuit of an intelligent life jacket based on ultraviolet light communication as claimed in claim 1, wherein: the capacitor C2 is a variable capacitor.
4. The circuit of an intelligent life jacket based on ultraviolet light communication as claimed in claim 1, wherein: the resistance value of the resistor R1 is a variable resistor, the resistance value of the resistor R2 is a variable resistor, the resistance value of the resistor R3 is a variable resistor, the resistance value of the resistor R11 is a variable resistor, the resistance value of the resistor R12 is a variable resistor, and the resistance value of the resistor R13 is a variable resistor.
5. The circuit of an intelligent life jacket based on ultraviolet light communication as claimed in claim 1, wherein: the resistance value of the current limiting resistor is a variable resistor.
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