Summary of the invention
One object of the present invention is, the needs existed for existing search and rescue terminal device are constantly by perfect demand, and a kind of search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology of new structure is provided, technical matters to be solved comprises: improve existing search and rescue terminal device further, to improve rescue efficiency and rescue success ratio.
The object of the invention to solve the technical problems can adopt following technical scheme to realize.
According to a kind of search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology that the present invention proposes, this search and rescue terminal device comprises: based on the satellite positioning communication module of big-dipper satellite positioning system, radiofrequency signal for Beidou satellite transmission being come carries out signal conversion processes, and the signal after process is supplied to microprocessor, the emergency message that microprocessor transmission comes is converted to radiofrequency signal to Big Dipper satellite launch; Ship automatic identification system AIS module, for launching ais signal under control of the microprocessor; Underwater sound inverting model, for producing acoustic signals under control of the microprocessor; Pressure transducer, for gathering pressure signal, and is supplied to microprocessor by the pressure signal collected; Microprocessor, for forming emergency message according to the signal received, and gives the satellite positioning communication module based on big-dipper satellite positioning system by emergency message transmissions; Also for judging that the current depth of water of described search and rescue terminal device reaches the predetermined depth of water at the collection signal come according to pressure transducer transmission, control satellite positioning communication module and AIS module are in off working state, and control underwater sound inverting model generation acoustic signals, otherwise, control underwater sound inverting model and be in off working state, and control satellite positioning communication module or AIS module is in running order; Power module, for each electric device in described terminal device provides power resource.
Object of the present invention and solve its technical matters and can also be further achieved by the following technical measures.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, the described satellite positioning communication module based on big-dipper satellite positioning system comprises: satellite positioning antennas, for receive Beidou satellite transmission come radiofrequency signal or to Big Dipper satellite launch radiofrequency signal; Low noise amplifier, carries out amplification process for transmitting by satellite positioning antennas the radiofrequency signal come to big-dipper satellite, and is transferred to radio frequency unit; Radio frequency unit, radiofrequency signal for coming low noise amplifier transmission carries out frequency-conversion processing, and by the analog signal transmission after frequency-conversion processing to analog to digital converter, be modulated to radiofrequency signal to the simulating signal that analog to digital converter transmission comes, and by the radio signal transmission after modulation to prime amplifier; Analog to digital converter, simulating signal for radio frequency unit transmission being come is converted to digital signal, and by digital data transmission to baseband signal processing unit, the digital signal that baseband signal processing unit transmission comes is converted to simulating signal, and by the analog signal transmission after conversion to radio frequency unit; Baseband signal processing unit, carries out base band signal process for the digital signal come analog to digital converter transmission and is transferred to microprocessor, and the signal that microprocessor transmission comes is carried out base band signal process and is transferred to analog to digital converter; Prime amplifier, for transmitting next radiofrequency signal by satellite positioning antennas to Big Dipper satellite launch by radio frequency unit.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, the described satellite positioning communication module based on big-dipper satellite positioning system is single mode chip or multimode chip.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, described multimode chip, except comprising the satellite positioning communication module based on big-dipper satellite positioning system, also comprises: the satellite positioning module based on american global positioning system, the satellite positioning module based on Russian Glonass global position system and based at least one in the satellite positioning module of European Union's Galilean satellite positioning system.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, the signal of described microprocessor also for coming according to the satellite positioning module based on american global positioning system, the satellite positioning module based on Russian Glonass global position system or the satellite positioning module transmission based on European Union's Galilean satellite positioning system forms emergency message, and gives the satellite positioning communication module based on big-dipper satellite positioning system by emergency message transmissions.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, described control satellite positioning communication module or AIS module is in running order comprises: according to predetermined time interval control that satellite positioning communication module and AIS module replace in running order.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, described AIS module comprises: ais signal transmitter unit and AIS antenna, and ais signal transmitter unit is connected respectively with microprocessor and AIS antenna.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, described AIS module also comprises: ais signal receiving element, and ais signal receiving element is connected respectively with microprocessor and AIS antenna.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, the control of described microprocessor to AIS module comprises: Microprocessor S3C44B0X AIS module is in ais signal listening state, when the ais signal received according to AIS module determines to there is rescue facility, control AIS module is in ais signal emission state, makes AIS module launch ais signal; And/or microprocessor is regularly in ais signal emission state according to predetermined transmission interval control AIS module.
Preferably, the aforesaid search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology, wherein, described AIS module comprises the chip that model is Si4463, and described AIS antenna is VHF aerial.
By technique scheme, of the present invention based on the Big Dipper, the search and rescue terminal device of AIS and underwater acoustic technology at least has following advantages and beneficial effect: the present invention is by based on the Big Dipper, satellite positioning communication module based on big-dipper satellite positioning system is set in the search and rescue terminal device of AIS and underwater acoustic technology, AIS module, underwater sound inverting model and pressure transducer, make based on the Big Dipper, the search and rescue terminal device of AIS and underwater acoustic technology not only can will search and rescue the information transmission such as the position of terminal device to rear end platform (as command centre or control center etc.) by the satellite positioning communication module based on big-dipper satellite positioning system under control of the microprocessor, the present invention can realize there is the rescue aids such as boats and ships under control of the microprocessor near search and rescue terminal device, AIS module is made to send ais signal, to ask rescue targetedly, in addition, the pressure acquisition signal that microprocessor can also export based on pressure transducer when judge to search and rescue terminal device be under water certain depth, send sound wave distress signal by underwater sound inverting model, microprocessor in the present invention, by the conservative control based on the satellite positioning communication module of big-dipper satellite positioning system, AIS module, underwater sound inverting model and pressure transducer, can make search and rescue terminal device realize when having better duration performance effectively crying for help, it can thus be appreciated that, search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology of the present invention can make rescue personnel know the particular location of searching and rescuing terminal device place early by multiple channel, perfect further existing search and rescue terminal device, thus improve rescue efficiency and rescue success ratio.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the embodiment of the search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
The primary structure of the search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology of the present embodiment as shown in Figure 1.
In Fig. 1, the search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology of the present embodiment mainly comprises: satellite positioning communication module 100 (the satellite positioning communication module 100 as based on big-dipper satellite positioning system), AIS (ShipborneAtomaticIdentificationSystem, ship automatic identification system) module 110, underwater sound inverting model 120, pressure transducer 130, microprocessor 140 and power module 150.
Below each several part of the search and rescue terminal device based on the Big Dipper, AIS and underwater acoustic technology is described in detail respectively.
Satellite positioning communication module 100 based on big-dipper satellite positioning system is connected with microprocessor 140.Satellite positioning communication module 100 based on big-dipper satellite positioning system is mainly used in the positional information of the search and rescue terminal device obtaining its place, to realize active location, the satellite positioning communication module 100 based on big-dipper satellite positioning system is also mainly used in the message (as Big Dipper short message) of the predetermined format of platform (as command centre or control center etc.) transmission to the back-end under the control of microprocessor 140.
Concrete, based on big-dipper satellite positioning system satellite positioning communication module 100 performed by an object lesson of operation be: based on the satellite positioning communication module 100 of big-dipper satellite positioning system under microprocessor 140 controls, receive the radiofrequency signal that big-dipper satellite positioning system (also can be called big-dipper satellite) transmission comes, and a series of process (as frequency-conversion processing and base band signal process etc.) is carried out to the radiofrequency signal received, then, by process after Signal transmissions to microprocessor 140; Based on big-dipper satellite positioning system satellite positioning communication module 100 microprocessor 140 control under, the message with predetermined format is sent to Big Dipper global position system, this message sends to big-dipper satellite positioning system by the form of radiofrequency signal, usually includes destination address information, the positional information of searching and rescuing terminal device and temporal information etc. in this message (as Big Dipper short message).Here temporal information can be the temporal information corresponding with positional information, i.e. the time of time information representation when search terminal equipment is in above-mentioned positional information.
An object lesson of the structure of the satellite positioning communication module 100 based on big-dipper satellite positioning system of the present invention is, satellite positioning communication module 100 mainly comprises: low noise amplifier, analog to digital converter, baseband signal processing unit, radio frequency unit, prime amplifier and satellite positioning antennas, wherein, the input end of low noise amplifier is connected with satellite positioning antennas, the output terminal of low noise amplifier is connected with the receiving cable input end of radio frequency unit, the input end of the receiving cable output terminal of radio frequency unit and the transmission channel of radio frequency unit respectively with the connection of analog to digital converter, analog to digital converter is connected with baseband signal processing unit, baseband signal processing unit is connected with microprocessor, the output terminal of the transmission channel of radio frequency unit is connected with the input end of prime amplifier, the output terminal of prime amplifier is connected with satellite positioning antennas, this satellite positioning antennas can be ceramic antenna.
This satellite positioning communication module 100 is under the control of microprocessor 140, by the radiofrequency signal that satellite positioning antennas reception big-dipper satellite positioning system is sent, first this radiofrequency signal is being transferred to the receiving cable of radio frequency unit after low noise amplifier carries out amplifying process to it, frequency-conversion processing is carried out to amplifying the radiofrequency signal after processing by the receiving cable of radio frequency unit, signal after frequency-conversion processing transfers to analog to digital converter from the receiving cable of radio frequency unit, analog to digital converter is transferred to baseband signal processing unit after the signal after this frequency-conversion processing is converted to digital signal, baseband signal processing unit carries out corresponding base band signal process to the digital signal received, and by the Signal transmissions after base band signal process to microprocessor 140.
Microprocessor 140 can search and rescue the current location information of terminal device according to the signal acquisition after the base band signal process received, and, microprocessor 140 can produce according to concrete demand and include destination address information, the message of the contents such as the positional information of search and rescue terminal device and current time information, microprocessor 140 by this message transmissions to baseband signal processing unit, and be transferred to analog to digital converter after carrying out corresponding base band signal process by baseband signal processing unit, the transmission channel of radio frequency unit is transferred to after the signal received being converted to simulating signal by analog to digital converter, prime amplifier is transferred to after frequency-conversion processing being carried out to the simulating signal received by the transmission channel of radio frequency unit, prime amplifier carries out amplification process to radiofrequency signal after the frequency-conversion processing received, and the radiofrequency signal of amplifying after process is launched by satellite positioning antennas.Big-dipper satellite (as big-dipper satellite positioning system) receive from search and rescue terminal device based on the message of radiofrequency signal after, according to the destination address information of carrying in this message, this message can be sent to corresponding rear end platform, as this message is sent to command centre or rescue center etc.
The satellite positioning communication module 100 based on big-dipper satellite positioning system in the present embodiment can show as the form (namely this chip only has big-dipper satellite positioning function) of single mode chip, also (namely this chip not only has big-dipper satellite positioning function can to show as the form of multimode chip, also there is the satellite positioning functions of other types), if this multimode chip is except including the satellite positioning communication module 100 based on big-dipper satellite positioning system, also include: based on the satellite positioning module of american global positioning system, at least one in satellite positioning module based on Russian Glonass global position system and the satellite positioning module based on European Union's Galilean satellite positioning system, such as in actual applications, this multimode chip can comprise simultaneously: the satellite positioning communication module 100 based on big-dipper satellite positioning system, the satellite positioning module based on american global positioning system, based on the satellite positioning module of Russian Glonass global position system and the satellite positioning module based on European Union's Galilean satellite positioning system.
It should be noted that, when the satellite positioning communication module 100 based on big-dipper satellite positioning system shows as multimode chip form, microprocessor 140 control based on big-dipper satellite positioning system satellite positioning communication module 100 to Big Dipper global position system to send the positional information of the search and rescue terminal device in the message (as Big Dipper short message) with predetermined format and temporal information can be satellite positioning communication module 100 based on big-dipper satellite positioning system, based on the satellite positioning module of american global positioning system, the positional information that any one satellite positioning module in satellite positioning module based on Russian Glonass global position system and the satellite positioning module based on European Union's Galilean satellite positioning system obtains and temporal information.
AIS module 110 is connected with microprocessor 140.AIS module 110 is mainly used in launching ais signal under the control of microprocessor 140, and AIS module 110 can also be used for the ais signal receiving the transmitting of other equipment under the control of microprocessor 140.
Concrete, an object lesson of the operation performed by AIS module 110 is: AIS module 110 starts ais signal snoop-operations under microprocessor 140 controls, when AIS module 110 does not listen to the ais signal of other any equipment transmittings within the schedule time, microprocessor 140 control AIS module 110 is in the state of quitting work (i.e. off working state); And when AIS module 110 listens to the ais signal of other equipment transmitting within the schedule time, AIS module 110 notifies microprocessor 140, and it receives ais signal (as the ais signal received is transferred to microprocessor 140 etc.), microprocessor 140 control AIS module 110 continues to launch ais signal (namely asks the ais signal rescued, also AIS distress signal can be called), as microprocessor 140 control AIS module 110 launched an ais signal at interval of 30 seconds, after receiving ais signal to make other equipment, implement corresponding rescue measure.The ais signal that AIS module 110 is launched can include the current location information of searching and rescuing terminal device, and this current location information can be microprocessor 140 acquisition by the satellite positioning communication module 100 based on big-dipper satellite positioning system.In addition, no matter whether AIS module 110 listens to the ais signal that other equipment is launched, this AIS module 110 can under the control of microprocessor 140 periodic transmission ais signal, namely microprocessor 140 according to predetermined transmission interval regularly control AIS module 110 launch ais signal, as microprocessor 140 launches an ais signal etc. at interval of 1 minute control AIS module 110, for existing AIS standard transmitting per minute 8 these regulations of ais signal, the present embodiment effectively can reduce the transmitting power consumption of AIS module 110.
In addition, the ais signal that AIS module 110 is launched can be specially MMSI (MaritimeMobileServiceIdentify, Waterborne movable communication business identification code) the first five be 97298 AIS message 1 and AIS message 14.
AIS module 110 of the present invention can mainly comprise: ais signal transmitter unit and AIS antenna, and this AIS module 110 can also comprise: ais signal receiving element; Ais signal transmitter unit is wherein connected respectively with microprocessor 140 and AIS antenna, and ais signal receiving element wherein is also connected respectively with microprocessor 140 and AIS antenna.Ais signal transmitter unit is mainly used in launching ais signal under the control of microprocessor 140, as determined that at microprocessor 140 place's ais signal receiving element receives the ais signal of other equipment transmitting, controlling ais signal transmitter unit and launching ais signal.Ais signal receiving element is mainly used under the control of microprocessor 140 in running order, to receive the ais signal that other equipment is launched, as microprocessor 140 is periodically in running order according to predetermined time interval triggering ais signal receiving element.AIS antenna can be specially VHF (VeryHighFrequency, very high frequency(VHF)) antenna, and ais signal transmitter unit and ais signal receiving element share same AIS antenna usually.
AIS module 110 of the present invention specifically can select the chip of SiliconlabsEZRadio series, is the chip of si4463 as selected model.Because this chip has features such as using general ISM band, high integrated, low-power consumption, low data rate and high performance-price ratio, therefore, this chip select the aspect such as reliable operation performance and cost of manufacture for the search and rescue terminal device of the present embodiment to be very favorable.
Underwater sound inverting model 120 is connected with microprocessor 140.Underwater sound inverting model 120 is mainly used under the control of microprocessor 140, sends acoustic signals (as ultrasound wave).Underwater sound inverting model 120 in the present invention can utilize the magnetostrictive effect of crystal piezoelectric effect or piezoelectric ceramics effect or iron-nickel alloy to produce acoustic signals and to send.Acoustic signals can be propagated at a distance preferably in water, and rescue aid usually can to 60 meters, underwater and radius is search and rescue terminal device within the scope of 1000 meters accurately locates by the acoustic signals that receives.
Pressure transducer 130 is connected with microprocessor 140.Pressure transducer 130 is mainly used in gathering pressure information, and the pressure information collected is supplied to microprocessor 140.Pressure transducer 130 can be in signals collecting state or off working state under the control of microprocessor 140.Microprocessor 140 transmit according to pressure transducer 130 pressure information come determine search and rescue terminal device current be under water predetermined depth time, can not control AIS module 110 be in running order again, but control underwater sound inverting model 120 and send acoustic signals.
Microprocessor 140 is connected respectively with based on the satellite positioning communication module 100 of big-dipper satellite positioning system, AIS module 110, underwater sound inverting model 120 and pressure transducer 130.The core parts in terminal device searched and rescued by microprocessor 140, microprocessor 140 is mainly used in coordinating the work based on the satellite positioning communication module 100 of big-dipper satellite positioning system, AIS module 110, underwater sound inverting model 120 and pressure transducer 130, thus when saving the power resource of searching and rescuing terminal device as much as possible, externally send distress signal in many ways.
In actual applications, the satellite positioning communication module 100 based on big-dipper satellite positioning system coordinated by microprocessor 140, AIS module 110, the concrete example of of the work of underwater sound inverting model 120 and pressure transducer 130 is: when the ship being configured with search and rescue terminal device of the present invention is impaired, this search and rescue terminal device is in opening because meeting water, microprocessor 140 is in running order, microprocessor 140 controls to comprise the single mode chip based on the satellite positioning communication module 100 of big-dipper satellite positioning system or the operation of multimode chip execution active location, microprocessor 140 receives single mode chip or multimode chip transmits the positioning signal from global position system of coming, microprocessor 140 determines the current location information of searching and rescuing terminal device according to the positioning signal received, microprocessor 140 utilizes the destination address information and the up-to-date current location information formation Big Dipper short message determined that preset, can also comprise current time information in this Big Dipper short message, the microprocessor 140 satellite positioning communication module 100 based on big-dipper satellite positioning system controlled in single mode chip or multimode chip sends this Big Dipper short message.Meanwhile, microprocessor 140 also can form AIS message 1 or AIS message 14 according to the up-to-date current location information determined, and control AIS module 110 sends AIS message 1 or AIS message 14.Microprocessor 140 can after controlling to send multiple Big Dipper short message continuously based on the satellite positioning communication module 100 of big-dipper satellite positioning system, control single mode chip or multimode chip are in off working state, and control AIS module 110 is in listening state (i.e. ais signal listening state), make AIS module 110 can receive the ais signal of external unit transmitting, whether microprocessor 140 can receive ais signal control AIS module 110 according to AIS module 110 and whether be in emission state; If control module 140 is when receiving AIS module 110 and transmitting the ais signal come, control AIS module 110 is in emission state (i.e. ais signal emission state), make AIS module 110 outwards can launch ais signal, to make external unit, it is rescued; For another example microprocessor 140 does not receive the ais signal that AIS module 110 transmission comes within the scope of certain hour, then microprocessor 140 control AIS module 110 is in off working state, to save the power resource of searching and rescuing terminal device; Microprocessor 140 can the collection signal (as intermittent starting pressure sensor 130 is in signals collecting state) of intermittent acquisition pressure transducer 130, and judge to search and rescue the current residing depth of water of terminal device according to the collection signal that pressure transducer 130 current transmission comes, when judging that the current depth of water reaches the predetermined depth of water, it is in running order that microprocessor 140 controls underwater sound inverting model 120, thus make underwater sound inverting model 120 produce acoustic signals; When judging that the current depth of water does not reach the predetermined depth of water, microprocessor 140 can while control underwater sound inverting model 120 be in off working state, according to predetermined time interval control that satellite positioning communication module 100 and AIS module 110 replace in running order, namely microprocessor 140 control AIS module 110 while control satellite positioning communication module 100 is in running order is in off working state, and control AIS module 110 is in running order while control satellite positioning communication module 100 is in off working state.
Power module 150 is all connected with electric device with to search and rescue in terminal device each, so that provide power resource for each electric device of searching and rescuing in terminal device.Here connection can be directly connect, also can be indirectly connect, this example indirectly connected is: power module 150 is directly connected with microprocessor 140, other obtain power resource by being connected with microprocessor 140 from microprocessor 140 with electric device, and namely other are connected with power module 150 by microprocessor 140 with electric device.
Power module 150 generally includes: battery and at least one voltage stabilizing chip, and battery wherein can be lithium-manganese cell, and voltage stabilizing chip can provide a kind of power resource of specification.A concrete example, power module 150 comprises one piece of lithium-manganese cell and two voltage stabilizing chips, and wherein, lithium-manganese cell provides the supply voltage of 6V, one of them voltage stabilizing chip provides the supply voltage of 3.3V, and wherein another voltage stabilizing chip provides the supply voltage of 4.8V; The rule of the specification of the supply voltage that above-mentioned lithium-manganese cell provides, the quantity of voltage stabilizing chip and its supply voltage provided is only and illustrates, the present embodiment can arrange according to the actual demand of each electric device the supply voltage specification that the specification of the supply voltage that lithium-manganese cell provides, the quantity of voltage stabilizing chip and voltage stabilizing chip provide completely.
The above is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but, foregoing description is also not used to limit the present invention, any those skilled in the art are not departing within the scope of technical scheme of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, but every content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.