CN203414594U - Rapid GPS positioning system for AIS netsonde - Google Patents

Abstract

The utility model relates to a rapid GPS positioning system for an AIS netsonde. The rapid GPS positioning system comprises an AIS netsonde main controller, a GPS positioning module, an AIS transmitter circuit, a power supply control circuit and a battery power supply circuit, a first serial port of the AIS netsonde main controller is connected with the AIS transmitter circuit, a second serial port of the AIS netsonde main controller is connected with a serial port of the GPS positioning module, an IO interface of the AIS netsonde main controller is connected with the power supply control circuit, a primary power supply of the GPS positioning module is connected with the battery power supply circuit via the power supply control circuit, a stand-by power supply is directly connected with the battery power supply circuit, and the battery power supply circuit is respectively connected with the AIS netsonde main controller, the GPS positioning module, the AIS transmitter circuit and the power supply control circuit. The rapid GPS positioning system is advantageous in that by controlling the power-on and power-off times of the primary power supply of the GPS module, the positioning time of the netsonde is reduced to 2 seconds from the original 40 seconds each time, the power consumption in abnormal conditions is reduced, the continuous work time of the AIS netsonde can last 20 days which is twice as many as the original time after the netsonde is charged for once.

Description

A kind of rapid GPS positioning system for AIS netsonde

Technical field

The utility model relates to GPS positioning system, a kind of especially rapid GPS positioning system for AIS netsonde.

Background technology

At present, AIS netsonde progressively generally uses in fishery system, for fisherman provides the fishing net monitoring means of convenient information, improved fishing efficiency, after but current AIS netsonde once charges, continuous working period only had about 7 to 10 days, can not meet fisherman's requirement completely, fisherman expects that AIS netsonde can work more than 15 days.For this requirement, some producers have taked to increase battery capacity or have increased the way of number of batteries, do like this and have both improved AIS netsonde cost, make again AIS netsonde install and use the trouble that becomes, and fisherman is very dissatisfied.

By analyzing existing AIS netsonde, the parts of finding its main power consumption are GPS modules, and under normal operation, GPS module positioning time needs about 40 seconds, the consumption of GPS more than 60% electric weight of AIS netsonde, under severe weather conditions, power consumption is more.In order to address this problem, need to adopt the method for a kind of new rapid GPS for AIS netsonde location, so that each shortening positioning time of netsonde reduces the opening time of locating module, thereby make AIS netsonde in the situation that not increasing cost, extend the rear continuous working period of once charging.And current domestic and foreign literature there is not yet the report of correlation technique.

Summary of the invention

The purpose of this utility model is exactly for overcoming the deficiencies in the prior art, the short difficult problem of continuous working period after once charging for AIS netsonde, a kind of rapid GPS positioning system for AIS netsonde is provided, by controlling the time of GPS module primary power opening and closing, netsonde was shortened in 2 seconds by original 40 seconds each positioning time, and block and ephemeris abnormal conditions by screening GPS locating module signal, reduce the electric quantity consumption under abnormal conditions, in the hope of reaching once the charge object of working time of prolongation.

The utility model is to realize by such technical scheme: a kind of rapid GPS positioning system for AIS netsonde, it is characterized in that: by AIS netsonde master controller, GPS locating module, AIS transmitter circuitry, power control circuit and battery feed circuit form, wherein AIS netsonde master controller is selected 32 ARM chips of the Cortex-M3 of ST company kernel STM32F103RCT6, be used for controlling AIS netsonde unit, GPS locating module is selected the NEO-6M module of Ublox company, AIS netsonde master controller serial ports 1 is connected with AIS transmitter circuitry, for sending AIS message and control signal to AIS transmitter circuitry, AIS netsonde master controller serial ports 2 is connected with GPS locating module serial ports, AIS netsonde master controller IO interface is connected with power control circuit, GPS locating module primary power is connected with battery feed circuit by power control circuit, standby power supply is directly connected with battery feed circuit, and battery feed circuit output terminal is connected with AIS netsonde master controller, GPS locating module, AIS transmitter circuitry, power control circuit respectively.

The beneficial effects of the utility model are, rapid GPS positioning system for AIS netsonde, do not increasing under the prerequisite of AIS netsonde cost, by controlling the time of GPS module primary power opening and closing, netsonde was shortened in 2 seconds by original 40 seconds each positioning time, and block and ephemeris abnormal conditions by screening GPS locating module signal, reduce the electric quantity consumption under abnormal conditions, thereby after AIS netsonde is once charged in the situation that does not increase cost, continuous working period reaches 20 days, time lengthening more than one times.

Accompanying drawing explanation

Fig. 1, for the rapid GPS positioning system block diagram of AIS netsonde;

Fig. 2, for the rapid GPS localization method software flow pattern of AIS netsonde.

Specific embodiments

Below in conjunction with accompanying drawing, the utility model is further illustrated:

As shown in Figure 1, rapid GPS positioning system for AIS netsonde is comprised of AIS netsonde master controller, GPS locating module, AIS transmitter circuitry, power control circuit and battery feed circuit, wherein AIS netsonde master controller is selected 32 ARM chips of the Cortex-M3 of ST company kernel STM32F103RCT6, be responsible for controlling the work of AIS netsonde unit, and AIS protocol generation; GPS locating module is selected the NEO-6M module of Ublox company, is responsible for receiving gps satellite signal, computational analysis current location information; The message that AIS transmitter circuitry is responsible for AIS netsonde master controller to send here is adjusted to emission of radio frequency signals in wireless space; Electric power starting and disconnection that power control circuit is sent here battery feed circuit by AIS netsonde main controller controls; Battery feed circuit is responsible for each functional module of AIS netsonde stabilized supply voltage power supply is provided.

AIS netsonde master controller serial ports 1 is connected with AIS transmitter circuitry, can send AIS message and control signal to AIS transmitter circuitry;

AIS netsonde master controller serial ports 2 is connected with GPS locating module serial ports, can receive GPS locating information;

AIS netsonde master controller IO interface is connected with power control circuit, and the low and high level by IO interface changes, and can control the break-make of GPS locating module primary power power supply;

GPS locating module primary power is connected with battery feed circuit by power control circuit, and standby power supply is directly connected with battery feed circuit;

Battery feed circuit output terminal is connected with AIS netsonde master controller, GPS locating module, AIS transmitter circuitry, power control circuit respectively, is each circuit unit power supply.

As shown in Figure 2, as follows for the rapid GPS localization method software flow of AIS netsonde:

First, the start of AIS netsonde, battery feed circuit is AIS netsonde master controller, GPS locating module standby power supply, AIS transmitter circuitry and power control circuit power supply, at AIS netsonde master controller IO interface, control power control circuit to GPS locating module primary power access 3V power supply, whether successfully AIS netsonde master controller constantly inquires about GPS locating module location by serial ports 2, after once GPS locating module is successfully located, AIS netsonde master controller starts timing 5 minutes, and wait GPS locating module is downloaded satellite ephemeris file by gps antenna.After timing in 5 minutes finishes, AIS netsonde master controller inquiry GPS locating module positioning states, if GPS locating module is still located normally, is judged to be satellite ephemeris file and downloads successfully.By great many of experiments, show, within 5 minutes, can guarantee that under normal circumstances GPS locating module completes satellite ephemeris file download work.After timing in 5 minutes completes, AIS netsonde main controller controls power control circuit is closed GPS locating module primary power, but GPS locating module standby power supply remains unchanged, and can guarantee that so the inner ephemeris file data of GPS locating module do not lose;

If never located successfully in the 60 second time of GPS locating module after the start of AIS netsonde, AIS netsonde master controller judges that current satellite-signal is abnormal, closes GPS locating module primary power and reorientates after 30 minutes again.

If GPS locating module is not located after timing in 5 minutes finishes, AIS netsonde master controller need to reopen GPS locating module primary power, and wait GPS locating module is successfully located.

GPS locating module has successfully been downloaded after satellite ephemeris file, AIS netsonde master controller is opened a GPS locating module primary power for every 3 minutes, make GPS locating module again search of satellite position, now GPS locating module only needs 1-2 can reorientate second under normal circumstances.After GPS locating module is successfully located, AIS netsonde master controller cuts out GPS locating module primary power immediately, and utilizes locating information to generate AIS message, by AIS transmitter circuitry, is modulated into emission of radio frequency signals in wireless space.

GPS locating module has successfully been downloaded after satellite ephemeris file, when within every 3 minutes, GPS locating module is once reorientated, if surpass still no-fix of 40 second time GPS locating module, AIS netsonde master controller cuts out GPS locating module primary power by force, waits for after timing in next 3 minutes arrives and again locating.In the time of all cannot locating in 40 seconds time ranges if there is continuous three GPS locating modules, AIS netsonde master controller judges that Current GPS signal blocks, per half an hour, is opened 60 seconds GPS locating module primary powers afterwards, until GPS locating module is successfully located, again download again satellite ephemeris file, recover to open for 3 minutes the cycle of a GPS locating module primary power.

GPS locating module has successfully been downloaded after satellite ephemeris file, when within every 3 minutes, GPS locating module is once reorientated, if continuous, occur that GPS locating module is after opening 20 seconds for 3 times, the successful situation in location in time range before 40 seconds, AIS netsonde master controller will judge that GPS locating module ephemeris is abnormal.After GPS locating module is located successfully for the third time, continue to keep GPS locating module primary power opening 5 minutes, so that GPS locating module is downloaded satellite ephemeris file again.

According to the above description, in conjunction with art technology, can realize scheme of the present utility model.

Claims (1)

1. the rapid GPS positioning system for AIS netsonde, it is characterized in that: by AIS netsonde master controller, GPS locating module, AIS transmitter circuitry, power control circuit and battery feed circuit, formed, wherein AIS netsonde master controller is selected 32 ARM chips of the Cortex-M3 of ST company kernel STM32F103RCT6, be used for controlling AIS netsonde unit, GPS locating module is selected the NEO-6M module of Ublox company, and AIS netsonde master controller serial ports 1 is connected with AIS transmitter circuitry; AIS netsonde master controller serial ports 2 is connected with GPS locating module serial ports, AIS netsonde master controller IO interface is connected with power control circuit, GPS locating module primary power is connected with battery feed circuit by power control circuit, standby power supply is directly connected with battery feed circuit, and battery feed circuit output terminal is connected with AIS netsonde master controller, GPS locating module, AIS transmitter circuitry, power control circuit respectively.

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