CN105572628B - AIS based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment - Google Patents

AIS based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment Download PDF

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Publication number
CN105572628B
CN105572628B CN201610049855.2A CN201610049855A CN105572628B CN 105572628 B CN105572628 B CN 105572628B CN 201610049855 A CN201610049855 A CN 201610049855A CN 105572628 B CN105572628 B CN 105572628B
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ais
signal
module
microprocessor
power
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CN105572628A (en
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姜海鹰
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Zhihang Changyang (Qingdao) Technology Co., Ltd
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Navigation Brilliance Qingdao Technology Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/68Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information

Abstract

The present invention provides a kind of AIS search and rescue position indicating mark equipment based on the communication of low orbit marine satellite, comprising: the locating module based on global position system, for satellite to be transmitted the location information come progress conversion process and is supplied to microprocessor;Microprocessor, for the power-adjustable transmitting unit transmission enhancing power emission order into AIS module;AIS module, it include: ais signal generation unit, power-adjustable transmitting unit and AIS antenna, ais signal generation unit, for when receiving enhancing power emission order, it can be by the received ais signal of low orbit marine satellite using enhancing transmission power transmitting, otherwise, power-adjustable transmitting unit emits ais signal using predetermined transmission power, and the enhancing transmission power is higher than predetermined transmission power;And power module.Technical solution provided by the invention largely improves a possibility that ais signal is effectively received, to improve rescue efficiency and rescue success rate.

Description

AIS based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment
Technical field
The present invention relates to technical field of electronic equipment, more particularly to a kind of AIS based on the communication of low orbit marine satellite Search and rescue position indicating mark equipment.
Background technique
After the generation of the disasters such as air crash, casualty, travel accident, disaster affected people, in danger is rapidly searched out Personnel, and Emergency Assistance is carried out to the disaster affected people of survival, distress personnel, it is vital for rescue work.
In rescue operations, it will usually find disaster affected people by instrument and equipment;If disaster affected people or disaster-stricken ship Only and other items on equipped with AIS (Shipborne Atomatic Identification System, ship automatic identification system System) search and rescue position indicating mark equipment, then it is very favorable to rescue work.
Inventor has found in realizing process of the present invention: after disaster generation, setting due to searching and rescuing position indicating mark equipped with AIS Standby disaster affected people or article swim in the height on the water surface usually it is very limited (as often be no more than 1 meter), therefore, AIS The most of power for searching and rescuing the ais signal of position indicating mark equipment transmitting can all be absorbed by earth surface (such as the water surface);In ideal shape Under state, the transmission range of ais signal does not exceed 10 nautical miles, in practical applications, if bad weather or environment are extreme, The transmission range of ais signal would generally be at 4 nautical miles or so.In ais signal coverage area, if ais signal can not be by ship A possibility that ais signals receiving device such as oceangoing ship or aircraft or base station is received, then obtains rescue can be greatly diminished, not only Best rescue time may be delayed, or even be also possible to that the life security of disaster affected people can be jeopardized.
Position indicating mark equipment is searched and rescued in view of above-mentioned existing AIS, the present inventor is based on being engaged in such Product design manufacture many years practical experience abundant and professional knowledge, and cooperate the utilization of scientific principle, actively it is subject to research and innovation, It, can be in certain journey to found a kind of new structural AIS search and rescue position indicating mark equipment based on the communication of low orbit marine satellite Overcome existing AIS to search and rescue technical problem present in position indicating mark equipment on degree, makes it with more practicability.By constantly grinding Study carefully and design, after studying sample repeatedly and improving, creates the present invention having practical value finally.
Summary of the invention
It is an object of the present invention to be deposited to overcome existing AIS to search and rescue position indicating mark equipment to a certain extent The technical issues of, and a kind of new structural AIS based on the communication of low orbit marine satellite is provided and searches and rescues position indicating mark equipment, institute Technical problems to be solved include: largely to improve a possibility that ais signal is effectively received, to improve rescue efficiency And rescue success rate, so that improving existing AIS searches and rescues position indicating mark equipment.
Technical solution below can be used to realize in the object of the invention to solve the technical problems.
A kind of AIS based on the communication of low orbit marine satellite proposed according to the present invention searches and rescues position indicating mark equipment, the equipment It specifically includes that the locating module based on global position system, is carried out at signal conversion for satellite to be transmitted to the location information come Reason, and signal is supplied to microprocessor by treated;Microprocessor, for generating emergency report according to the location information received Text, and give emergency message transmissions to ship automatic identification system ais signal generation unit, and tactful to adjustable according to predetermined transmitting Power emitting unit transmission enhancing power emission order;AIS module, comprising: ais signal generation unit, power-adjustable transmitting are single Member and AIS antenna, the ais signal generation unit be used for according to microprocessor transmission come emergency message generate accordingly Ais signal, the power-adjustable transmitting unit are used to adopt when receiving the enhancing power emission order that microprocessor transmission comes The ais signal is emitted by AIS antenna to low orbit marine satellite with enhancing transmission power, otherwise, using predetermined transmitting Power launches the ais signal by AIS antenna, and the enhancing transmission power is higher than predetermined transmission power;Power supply mould Block searches and rescues in position indicating mark equipment for the AIS and each provides power resource with electric device.
It the purpose of the present invention and solves its technical problem and can also be further achieved by the following technical measures.
Preferably, the AIS above-mentioned based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, wherein the AIS is searched Rescue position indicating mark equipment further include: underwater sound inverting model, for generating acoustic signals under control of the microprocessor and being sent out; Pressure sensor is supplied to microprocessor for acquiring pressure signal, and by collected pressure signal;The microprocessor is also For according to pressure sensor transmission come acquisition signal judge it is described search and rescue position indicating mark equipment the current depth of water reach pre- In the case where determining the depth of water, controls locating module and AIS module is in off working state, and control underwater sound inverting model generation sound Wave signal, otherwise, control underwater sound inverting model be in off working state, and according to predetermined time interval control locating module with AIS module is alternately in running order.
Preferably, the AIS above-mentioned based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, wherein described to be based on The locating module of global position system includes: satellite positioning antennas;GPS module, for receiving satellite transmission by ceramic antenna The location information come, and received location information is subjected to signal conversion processes, by treated, signal is supplied to microprocessor.
Preferably, the AIS above-mentioned based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, wherein described to be based on When the locating module of global position system is the satellite positioning communication module based on Beidou satellite alignment system, the GPS module Include: low-noise amplifier, for big-dipper satellite by satellite positioning antennas transmission come radiofrequency signal amplify processing, And it is transferred to radio frequency unit;Radio frequency unit carries out frequency-conversion processing for transmitting the radiofrequency signal come to low-noise amplifier, and will Analog signal transmission after frequency-conversion processing is modulated to radio frequency letter to the analog signal that analog-digital converter transmission comes to analog-digital converter Number, and by modulated radio signal transmission to preamplifier;Analog-digital converter, for radio frequency unit to be transmitted the simulation come Signal is converted to digital signal, and digital data transmission is transmitted baseband signal processing unit to baseband signal processing unit The digital signal come is converted to analog signal, and by the analog signal transmission after conversion to radio frequency unit;Base band signal process list Member, for transmitting the digital signal come progress base band signal process to analog-digital converter and being transferred to microprocessor, by micro process The signal that device transmission comes carries out base band signal process and is transferred to analog-digital converter;Preamplifier, for passing radio frequency unit Defeated next radiofrequency signal passes through satellite positioning antennas to Beidou satellite launch.
Preferably, the AIS above-mentioned based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, wherein described to be based on The locating module of global position system is single mode chip or multimode chip.
Preferably, the AIS above-mentioned based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, wherein the multimode Chip includes: the satellite positioning communication module based on Beidou satellite alignment system, the positioning mould based on american global positioning system Block, the locating module based on Russian Glonass global position system and determined based on European Union's Galilean satellite positioning system At least one of position module.
Preferably, the AIS above-mentioned based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, wherein micro- place Reason device be also used to according to based on american global positioning system locating module, based on Russian Glonass global position system Locating module or based on European Union's Galilean satellite positioning system locating module transmission come signal generate emergency message, and general Message transmissions of crying for help give the satellite positioning communication module based on Beidou satellite alignment system.
Preferably, the AIS above-mentioned based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, wherein micro- place Predetermined transmitting strategy in reason device includes: to enhance power emission to power-adjustable transmitting unit transmission primaries at interval of scheduled duration Order.
Preferably, the AIS above-mentioned based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, wherein described AIS days Line is VHF aerial.
By above-mentioned technical proposal, the AIS of the invention based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment extremely Have less following advantages and the utility model has the advantages that the present invention by the way that power-adjustable transmitting unit is arranged in AIS module, and by micro- Processor control power-adjustable transmitting unit can be made using enhancing power emission by the received ais signal of low orbit marine satellite AIS, which searches and rescues the information such as number and the position of position indicating mark equipment, can give low orbit marine satellite by AIS module transfer, then It can be transmitted to Back end data platform by low orbit marine satellite, largely improve the machine that ais signal is successfully received Rate;It follows that technical solution provided by the invention largely improves a possibility that ais signal is effectively received, To improve rescue efficiency and rescue success rate, perfect existing AIS searches and rescues position indicating mark equipment.
The above description is only an overview of the technical scheme of the present invention, in order to better understand technology hand of the invention Section, and can be implemented in accordance with the contents of the specification, and in order to allow above and other purpose, feature and advantage of the invention It can be more clearly understood, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the AIS of the invention based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with Attached drawing and preferred embodiment search and rescue position indicating mark equipment to the AIS proposed according to the present invention based on the communication of low orbit marine satellite Specific embodiment, structure, feature and its effect, detailed description is as follows.
The AIS based on the communication of low orbit marine satellite of the present embodiment searches and rescues primary structure such as Fig. 1 institute of position indicating mark equipment Show.
In Fig. 1, it includes: to be based on defending that the AIS based on the communication of low orbit marine satellite of the present embodiment, which searches and rescues position indicating mark equipment, Locating module 100 (following abbreviation locating modules 100), microprocessor 110, AIS module 120 and the power supply mould of star positioning system Block 130.Preferably, it can also include: underwater sound inverting model 140 and pressure sensor 150 which, which searches and rescues position indicating mark equipment,.
The AIS communicated based on low orbit marine satellite the various pieces for searching and rescuing position indicating mark equipment are carried out in detail respectively below Explanation.
Locating module 100 is connect with 110 signal of microprocessor.The AIS that locating module 100 is mainly used for where obtaining it is searched The location information of position indicating mark equipment is rescued, to realize active location, when locating module 100 has signal sending function, positioning mould Block 100 can be also used for the rear end platform (such as command centre or control centre) under the control of microprocessor 110 and send The message (such as AIS message and Big Dipper short message) of predetermined format.
Specifically, in the case where locating module 100 is the satellite positioning communication module based on Beidou satellite alignment system, One specific example of operation performed by locating module 100 are as follows: the satellite positioning communication mould based on Beidou satellite alignment system Block receives the radio frequency letter that Beidou satellite alignment system (being referred to as big-dipper satellite) transmission comes under the control of microprocessor 110 Number, and a series of processing (such as frequency-conversion processing and base band signal process) is carried out to the radiofrequency signal received, it then, will Treated, and signal is transferred to microprocessor 110;Satellite positioning communication module based on Beidou satellite alignment system is in micro process Under device 110 controls, the message with predetermined format is sent to Beidou satellite alignment system, the message is by way of radiofrequency signal It is sent to Beidou satellite alignment system, purpose address information has been generally comprised in the message (such as Big Dipper short message), AIS search and rescue are shown The number of position marking device, AIS search and rescue location information and temporal information of position indicating mark equipment etc..Here temporal information can be Temporal information corresponding with location information, i.e. time information representation search and rescue position indicating mark equipment in AIS and are in above-mentioned location information When time.
Locating module of the invention specifically includes that satellite positioning antennas and GPS module, and is based on north in locating module When the satellite positioning communication module for the global position system that struggles against, the knot of the satellite positioning communication module based on Beidou satellite alignment system One specific example of structure is, should satellite positioning communication module based on Beidou satellite alignment system include: low-noise amplifier, Analog-digital converter, baseband signal processing unit, radio frequency unit, preamplifier and satellite positioning antennas, wherein low noise is put The input terminal of big device is connect with satellite positioning antennas, the output end of low-noise amplifier and the receiving channel input terminal of radio frequency unit Connection, the input terminal of the transmission channel of the receiving channel output end and radio frequency unit of radio frequency unit connect with analog-digital converter respectively It connects, analog-digital converter is connect with baseband signal processing unit, and baseband signal processing unit is connect with microprocessor, radio frequency unit The output end of transmission channel and the input terminal of preamplifier connect, and the output end and satellite positioning antennas of preamplifier connect It connects, and the satellite positioning antennas can be ceramic antenna.
Control of the satellite positioning communication module based on Beidou satellite alignment system of the present embodiment in microprocessor 110 Under, the radiofrequency signal that sends of Beidou satellite alignment system is received by satellite positioning antennas, radiofrequency signal first pass around it is low Noise amplifier is transferred to the receiving channel of radio frequency unit after amplifying processing to it, by the receiving channel pair of radio frequency unit Radiofrequency signal after enhanced processing carries out frequency-conversion processing, and the signal after frequency-conversion processing is transmitted to mould from the receiving channel of radio frequency unit Number converter, analog-digital converter are transferred to base band signal process list after the signal after the frequency-conversion processing is converted to digital signal Member, baseband signal processing unit carry out corresponding base band signal process to the digital signal that receives, and by base band signal process Signal afterwards is transferred to microprocessor 110.
Microprocessor 110 can set the signal acquisition AIS search and rescue position indicating mark after base band signal process according to what is received Standby current location information, moreover, it includes destination address information, AIS that microprocessor 110 can be generated according to specific demand Search and rescue the report of the contents such as the number of position indicating mark equipment, the location information of AIS search and rescue position indicating mark equipment and current time information The message transmissions are carried out corresponding base to baseband signal processing unit, and by baseband signal processing unit by text, microprocessor 110 It is transferred to analog-digital converter after band signal processing, is transferred to after the signal received is converted to analog signal by analog-digital converter The transmission channel of radio frequency unit, later, after carrying out frequency-conversion processing to the analog signal received by the transmission channel of radio frequency unit It is transferred to preamplifier, preamplifier amplifies processing to radiofrequency signal after the frequency-conversion processing received, and at amplification Radiofrequency signal after reason is launched by satellite positioning antennas.Beidou satellite alignment system receive from AIS search and rescue show After the message based on radiofrequency signal of position marking device, the message can be sent to according to the destination address information carried in the message Corresponding back-end platform, such as the message is sent to command centre or rescue center.
Locating module 100 in the present embodiment can show as the form of single mode chip, and (such as the chip is only defended with Beidou Star positioning function), can also showing as the form of multimode chip, (such as the chip not only has big-dipper satellite positioning function, also has Have other kinds of satellite positioning functions), if the multimode chip is in addition to including the satellite based on Beidou satellite alignment system Except the communication module of position, also include: locating module based on american global positioning system, based on Russian Glonass satellite The locating module of positioning system and at least one of locating module based on European Union's Galilean satellite positioning system;Such as In practical application, which can include: locating module 100 based on Beidou satellite alignment system, based on the U.S. simultaneously The locating module of global positioning system, the locating module based on Russian Glonass global position system and be based on European Union's gal The locating module of benefit slightly global position system.
It should be strongly noted that microprocessor 110 is controlled in the case that locating module 100 shows as multimode chip form Make the satellite positioning communication module based on Beidou satellite alignment system to transmitted by Beidou satellite alignment system have predetermined format Message (such as Big Dipper short message) in AIS search and rescue position indicating mark equipment location information and temporal information can be and defended based on Beidou The orientation and communication module of star positioning system, the locating module based on american global positioning system are defended based on Russian Glonass Any one positioning in the locating module of star positioning system and locating module based on European Union's Galilean satellite positioning system Module location information obtained and temporal information.
AIS module 120 is connect with microprocessor 110.AIS module 120 be mainly used under the control of microprocessor 110 with Normal transmission power transmitting ais signal emits ais signal to enhance transmission power, and AIS module 120 can be also used for micro- The ais signal that other equipment transmitting comes is received under the control of processor 110.Above-mentioned predetermined transmission power can be specially AIS mould The predetermined transmission power of default setting in block 120, or the predetermined hair that microprocessor 110 configures AIS module 120 Power etc. is penetrated, and enhances transmission power and is greater than predetermined transmission power, such as predetermined transmission power is 2W, and enhances transmission power and be (the specific value of enhancing transmission power is usually to be to realize that low orbit marine satellite can receive AIS message to 4.5-5.5W It is quasi-).
Specifically, a specific example of operation performed by AIS module 120 are as follows: AIS module 120 is in microprocessor 110 Under control, it can star ais signal snoop-operations, it is any that other are not listened within the predetermined time in AIS module 120 In the case where the ais signal of equipment transmitting, microprocessor 110 controls AIS module 120 and is in stop working state (i.e. inoperative State);And in the case where AIS module 120 listens to the ais signal of other equipment transmitting within the predetermined time, AIS mould It receives ais signal (ais signal received is such as transferred to microprocessor 110) with the notice of block 120 microprocessor 110, Microprocessor 110 control AIS module 120 with normal transmission power transmitting ais signal (i.e. request rescue ais signal so that its His equipment implements corresponding rescue measure after receiving ais signal.The ais signal that AIS module 120 emits can wrap containing AIS The current location information of position indicating mark equipment is searched and rescued, and the current location information can be microprocessor 110 by defending based on Beidou The satellite positioning communication module of star positioning system and obtain.
In addition, the ais signal that AIS module 120 emits can be specially MMSI (Maritime Mobile Service Identify, Waterborne movable communication business identification code) first five position be 97298 (such as 97298XXXX) AIS message 1 and AIS Message 14.
AIS module 120 in the present embodiment specifically includes that ais signal generation unit 121, power-adjustable transmitting unit 122, AIS antenna 123 and ais signal receiving unit 124;Power-adjustable transmitting unit 122 and ais signal therein receive Unit 124 and AIS antenna 123 is separately connected, and ais signal generation unit 121, power-adjustable transmitting unit 122 and AIS letter Number receiving unit 124 is separately connected with microprocessor 110.
Ais signal generation unit 121 be mainly used for according to microprocessor 110 transmit come emergency message generation ais signal, Such as in the case where microprocessor 110 determines that ais signal receiving unit 124 receives the ais signal that other equipment transmitting comes, Microprocessor 110 generates emergency message, and by emergency message transmissions to ais signal generation unit 121, to keep ais signal raw At unit 121 according to 110 current transmission of microprocessor come emergency message generate ais signal.
What power-adjustable transmitting unit 122 was mainly used for generating ais signal generation unit 121 by AIS antenna 123 Ais signal is launched.It is by microprocessor 110 that power-adjustable transmitting unit 122, which emits transmission power used by ais signal, Control;Specifically, power-adjustable transmitting unit 122 is receiving the next enhancing power emission order of the transmission of microprocessor 110 When, the ais signal that ais signal generation unit 121 is currently generated should be emitted by AIS antenna 123 using enhancing transmission power It goes out, and can be usually properly received by low orbit marine satellite using the ais signal of enhancing transmission power transmitting, certainly, Can by ais signal coverage area ship or aircraft or the ais signals receiving device such as base station receive;Power-adjustable Transmitting unit 122 can usually be adopted in the case where being not received by the enhancing power emission order that the transmission of microprocessor 110 comes The ais signal that ais signal generation unit 121 is currently generated is launched by AIS antenna 123 with predetermined transmission power, is adopted The ais signal emitted with predetermined transmission power can be by the ship or aircraft or the AIS such as base station in ais signal coverage area Signal receiver is received.The predetermined transmitting strategy that microprocessor 110 can be locally stored according to it come to power-adjustable send out The transmission enhancing power emission order of unit 122 is penetrated, such as predetermined transmitting strategy can be to send out at interval of scheduled duration to power-adjustable The enhancing power emission order of 122 transmission primaries of unit is penetrated, so that microprocessor 110 can be at interval of scheduled duration (such as 10 minutes) And in the case where control AIS module 120 is in running order, an enhancing power is sent to power-adjustable transmitting unit 122 Firing order.The enhancing power emission order can be only an indicator, also can wrap containing the specific of enhancing transmission power Value.
AIS antenna 123 can specifically select VHF (Very High Frequency, very high frequency(VHF)) antenna, and power-adjustable Transmitting unit 122 and ais signal receiving unit 124 can usually share the same AIS antenna 123.
Ais signal receiving unit 124 be mainly used for it is in running order under the control of microprocessor 110, to receive it The ais signal of his equipment transmitting, as microprocessor 110 triggers ais signal receiving unit 124 periodically according to predetermined time interval It is in running order.
AIS module 120 of the invention can specifically select the chip of Silicon labs EZRadio series, can such as select With the chip of model Si4463.Due to the chip have using general ISM band, highly integrated, low-power consumption, low data rate with And the features such as high performance-price ratio, therefore, the functional reliability of position indicating mark equipment is searched and rescued the AIS of the present embodiment in the selection of the chip Energy and cost of manufacture etc. are very favorable.
Underwater sound inverting model 140 is connect with microprocessor 110.Underwater sound inverting model 140 is mainly used in microprocessor 110 Control under, issue acoustic signals (such as ultrasonic wave).Underwater sound inverting model 140 in the present invention can use crystal piezoelectric effect Or piezoelectric ceramics effect or the magnetostrictive effect of iron-nickel alloy generate acoustic signals and send.Acoustic signals can be preferable Propagated at a distance in water, rescue aid passes through the acoustic signals that receive usually can be to 60 meters of underwater and half Diameter is that the AIS search and rescue position indicating mark equipment within the scope of 1000 meters is accurately positioned.
Pressure sensor 150 is connect with microprocessor 110.Pressure sensor 150 is mainly used for acquiring pressure information, and will Collected pressure information is supplied to microprocessor 110.Pressure sensor 150 can be under the control of microprocessor 110 Signal acquisition state or off working state.Microprocessor 110 according to pressure sensor 150 transmission come pressure information determination AIS searches and rescues position indicating mark equipment when being currently at underwater predetermined depth out, and it is in running order to control AIS module 120 again, and It is that control underwater sound inverting model 140 issues acoustic signals.
Microprocessor 110 and locating module 100, AIS module 120, underwater sound inverting model 140 and pressure sensor 150 It is separately connected.Microprocessor 110 is the core element in AIS search and rescue position indicating mark equipment, and it is fixed that microprocessor 110 is mainly used for coordinating The work of position module 100, AIS module 120, underwater sound inverting model 140 and pressure sensor 150, thus saving as far as possible In the case that AIS searches and rescues the power resource of position indicating mark equipment, distress signal is sent to outside in many ways.In addition, micro process Device 110 is also mainly used for controlling whether AIS module 120 uses enhancing transmission power to send ais signal to low orbit marine satellite.
In practical applications, microprocessor 110 coordinate locating module 100, AIS module 120, underwater sound inverting model 140 and One specific example of the work of pressure sensor 150 are as follows: in the ship for searching and rescuing position indicating mark equipment configured with AIS of the invention When impaired, AIS search and rescue position indicating mark equipment is in the open state because meeting water, and microprocessor 110 is in running order, micro process Single mode chip of the control of device 110 comprising locating module 100 or multimode chip execute active location operation, and microprocessor 110 connects It receives single mode chip or multimode chip transmits the positioning signal from global position system of coming, microprocessor 110 is worked as according to it Before the positioning signal that receives determine that AIS searches and rescues the current location information of position indicating mark equipment;Microprocessor 110 is utilized and is preset Destination address information, AIS search and rescue the number of position indicating mark equipment and the newest current location information determined to generate Beidou short Message, can also include current time information in the Big Dipper short message, and microprocessor 110 controls single mode chip or multimode chip In the satellite positioning communication module based on Beidou satellite alignment system send the Big Dipper short message.Microprocessor 110 can be After satellite positioning communication module of the control based on Beidou satellite alignment system continuously transmits multiple Big Dipper short messages, single mode is controlled Chip or multimode chip are in off working state, and control AIS module 120 and be in listening state (i.e. ais signal monitoring shape State), so that AIS module 120 is received the ais signal of external equipment transmitting, microprocessor 110 can be according to AIS module 120 It is no to receive ais signal whether to control AIS module 120 in emission state;As microprocessor 110 is receiving AIS module When the ais signal that 120 transmission come, control AIS module 120 is in emission state (i.e. ais signal emission state), makes AIS module 120 can launch outward ais signal, so that external equipment rescues it;For another example microprocessor 110 is in certain time range It is inside not received by the ais signal that the transmission of AIS module 120 comes, then microprocessor 110 controls AIS module 120 and is in inoperative shape State, to save the power resource that AIS searches and rescues position indicating mark equipment;Microprocessor 110 can intermittent acquisition pressure sensor 150 Acquisition signal (such as intermittent starting pressure sensor 150 is in signal acquisition state), and worked as according to pressure sensor 150 The acquisition signal that preceding transmission comes judges the depth of water that is presently in of AIS search and rescue position indicating mark equipment, is judging that the current depth of water reaches pre- When determining the depth of water, it is in running order that microprocessor 110 controls underwater sound inverting model 140, so that underwater sound inverting model 140 be made to generate Acoustic signals;When judging that the current depth of water does not reach the predetermined depth of water, microprocessor 110 can be in control underwater sound inverting model 140 while be in off working state, controls orientation and communication module and AIS module 120 according to predetermined time interval and alternately locates In working condition, i.e. microprocessor 110 controls at AIS module 120 while control locating module 100 is in running order In off working state, and while control locating module 100 is in off working state, control AIS module 120 is in work shape State.In addition, being not received by the ais signal that the transmission of AIS module 120 comes within certain time in microprocessor 110, and micro- Processor 110 according to predetermined time interval n-th control AIS module 120 it is in running order when, microprocessor 110 can be with Enhancing power emission order is transmitted to power-adjustable transmitting unit 122, makes power-adjustable transmitting unit 122 using enhancing transmitting function Rate emits ais signal to low orbit marine satellite.
Power module 130 and AIS search and rescue position indicating mark equipment in it is each be all connected with electric device, in order to for AIS search and rescue show It is each with electric device offer power resource in the marking device of position.Here connection can be to be directly connected to, or it is indirectly connected with, An example being indirectly connected with are as follows: power module 130 is directly connected to the chip where microprocessor 110, other electricity consumptions member Part obtains power resource from the chip where microprocessor 110 and connecting with 110 place chip of microprocessor, i.e., other It is connect by the chip where microprocessor 110 with power module 130 with electric device.
Power module 130 generally includes: at least one battery;Power module 130 can also optionally include at least one Voltage stabilizing chip, battery therein can be lithium-manganese cell, and a voltage stabilizing chip can provide a kind of power resource of specification.One A specific example, power module 130 include one piece of lithium-manganese cell, wherein the supply voltage of lithium-manganese cell offer 6V.
The present invention is defended by searching and rescuing to be arranged in position indicating mark equipment in the AIS communicated based on low orbit marine satellite based on Beidou Satellite positioning communication module, AIS module 120, underwater sound inverting model 140 and the pressure sensor 150 of star positioning system, make base Searching and rescuing position indicating mark equipment in the AIS of low orbit marine satellite communication not only can be under the control of microprocessor 110 by being based on The satellite positioning communication module of Beidou satellite alignment system, which searches and rescues AIS after the information such as the position of position indicating mark equipment are transferred to, to be held level with both hands AIS can also be searched and rescued the position of position indicating mark equipment by platform (such as command centre or control centre) by low orbit marine satellite It the information such as sets and is transferred to back-end platform;The present invention can realize under the control of microprocessor 110 searches and rescues position indicating mark equipment in AIS Nearby there are in the case where the rescue aids such as ship, making AIS module 120 send ais signal, with targeted request rescue; In addition, microprocessor 110 be also based on pressure sensor 150 output pressure acquisition signal judge AIS search and rescue show position In the case that marking device is in underwater certain depth, the acoustic signals for emergency are sent by control underwater sound inverting model 140; Microprocessor 110 in the present invention passes through to (such as satellite positioning communication mould based on Beidou satellite alignment system of locating module 100 Block), the reasonable control of AIS module 120, underwater sound inverting model 140 and pressure sensor 150, AIS can be made to search and rescue position indicating mark Equipment improves the probability effectively cried for help with preferable duration performance;It follows that of the invention based on low orbit The AIS of marine satellite communication searches and rescues position indicating mark equipment can make rescue personnel early know that AIS search and rescue are shown by multiple channel Specific location where the marking device of position, moreover, a possibility that ais signal is effectively received largely is improved, thus Improve rescue efficiency and rescue success rate, perfect existing AIS searches and rescues position indicating mark equipment.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, though So the present invention has been disclosed as a preferred embodiment, however, foregoing description is not intended to limit the invention, it is any to be familiar with this profession Technical staff do not departing within the scope of technical solution of the present invention, when the technology contents using the disclosure above make it is a little more Equivalent embodiment that is dynamic or being modified to equivalent variations, but anything that does not depart from the technical scheme of the invention, according to the present invention Technical spirit any simple modification, equivalent change and modification to the above embodiments, still fall within the technology of the present invention side In the range of case.

Claims (8)

1. a kind of personal AIS based on the communication of low orbit marine satellite searches and rescues position indicating mark equipment, which is characterized in that the search and rescue are shown Position marking device include:
Locating module based on global position system carries out signal conversion processes for satellite to be transmitted to the location information come, and By treated, signal is supplied to microprocessor;
Microprocessor, for generating emergency message according to the location information received, and the message transmissions that will cry for help are automatic to ship Identifying system ais signal generation unit, and enhancing power emission is transmitted to power-adjustable transmitting unit according to predetermined transmitting strategy Order;
AIS module, comprising: ais signal generation unit, power-adjustable transmitting unit and AIS antenna, the ais signal generate Unit is used to generate corresponding ais signal, the power-adjustable transmitting unit use according to the emergency message that microprocessor transmission comes In when receiving the enhancing power emission order that microprocessor transmission comes, the ais signal is led to using enhancing transmission power It crosses AIS antenna to emit to low orbit marine satellite, otherwise, be sent out the ais signal by AIS antenna using predetermined transmission power It is shot out, the enhancing transmission power is higher than predetermined transmission power;
Predetermined transmitting strategy in the microprocessor includes: at interval of scheduled duration to power-adjustable transmitting unit transmission primaries Enhance power emission order;
Power module, including at least one battery, for the AIS search and rescue position indicating mark equipment in it is each with electric device provide electric energy money Source.
2. AIS as described in claim 1 searches and rescues position indicating mark equipment, which is characterized in that the AIS searches and rescues position indicating mark equipment and also wraps It includes:
Underwater sound inverting model, for generating acoustic signals under control of the microprocessor and being sent out;
Pressure sensor is supplied to microprocessor for acquiring pressure signal, and by collected pressure signal;
The microprocessor be also used to according to pressure sensor transmission come acquisition signal judge that the search and rescue position indicating mark is set In the case that the standby current depth of water reaches the predetermined depth of water, controls locating module and AIS module is in off working state, and control Underwater sound inverting model generates acoustic signals, and otherwise, control underwater sound inverting model is in off working state, and according between the predetermined time It is alternately in running order every control locating module and AIS module.
3. AIS as described in claim 1 searches and rescues position indicating mark equipment, which is characterized in that described to be determined based on global position system Position module include:
Satellite positioning antennas;
GPS module, for by ceramic antenna receive satellite transmission come location information, and received location information is subjected to letter Number conversion process, will treated that signal is supplied to microprocessor.
4. AIS as claimed in claim 3 searches and rescues position indicating mark equipment, which is characterized in that described to be determined based on global position system When position module is the satellite positioning communication module based on Beidou satellite alignment system, the GPS module includes:
Low-noise amplifier, for big-dipper satellite by satellite positioning antennas transmission come radiofrequency signal amplify processing, And it is transferred to radio frequency unit;
Radio frequency unit carries out frequency-conversion processing for transmitting the radiofrequency signal come to low-noise amplifier, and will be after frequency-conversion processing Analog signal transmission is modulated to radiofrequency signal to analog-digital converter, to the analog signal that analog-digital converter transmission comes, and will modulation Radio signal transmission afterwards is to preamplifier;
Analog-digital converter is converted to digital signal for radio frequency unit to be transmitted the analog signal come, and by digital data transmission To baseband signal processing unit, the digital signal that baseband signal processing unit transmission comes is converted into analog signal, and will conversion Analog signal transmission afterwards is to radio frequency unit;
Baseband signal processing unit, for transmitting the digital signal come progress base band signal process to analog-digital converter and being transferred to The signal that microprocessor transmission comes is carried out base band signal process and is transferred to analog-digital converter by microprocessor;
Preamplifier passes through satellite positioning antennas to Beidou satellite launch for radio frequency unit to be transmitted to the radiofrequency signal come.
5. AIS as described in claim 1 searches and rescues position indicating mark equipment, which is characterized in that described to be determined based on global position system Position module is single mode chip or multimode chip.
6. AIS as claimed in claim 5 searches and rescues position indicating mark equipment, which is characterized in that the multimode chip includes: based on Beidou The satellite positioning communication module of global position system, is based on Russian lattice Lip river at the locating module based on american global positioning system Receive in the locating module of this global position system and the locating module based on European Union's Galilean satellite positioning system at least one It is a.
7. AIS as claimed in claim 6 searches and rescues position indicating mark equipment, which is characterized in that the microprocessor is also used to according to base In the locating module of american global positioning system, the locating module based on Russian Glonass global position system or it is based on The signal that the locating module transmission of European Union's Galilean satellite positioning system comes generates emergency message, and by emergency message transmissions to base In the satellite positioning communication module of Beidou satellite alignment system.
8. the search and rescue position indicating mark equipment as described in any claim in claim 1 to 7, which is characterized in that the AIS antenna For VHF aerial.
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