CN203813846U

CN203813846U - Automatic-calling VHF digital selective calling terminal system

Info

Publication number: CN203813846U
Application number: CN201420065018.5U
Authority: CN
Inventors: 李军; 谷溪; 季本山
Original assignee: Nantong Shipping College
Current assignee: Nantong Shipping College
Priority date: 2014-02-14
Filing date: 2014-02-14
Publication date: 2014-09-03
Anticipated expiration: 2024-02-14

Abstract

The utility model relates to an automatic-calling VHF digital selective calling (DSC) terminal system. The system comprises a VHF assembly, a DSC terminal calling sequence processing unit, and a data processor. An input terminal of the data processor is connected to a VTS interface circuit, and an output terminal is connected to an input terminal of the calling sequence processing unit, an output terminal of which is connected to the VHF assembly. The system enables an operator to quickly set up a communication link through DSC communication before voice communication to improve the automation degree and the work efficiency of a VTS.

Description

A kind of automatic call VHF Digital Selective Calling Terminals system

Technical field

The utility model relates to navigation safety technical field, particularly relates to a kind of automatic call VHF Digital Selective Calling Terminals system.

Background technology

VTS (VesselTrafficSystem is called for short VTS) is ensureing navigation safety, improves shipping efficiency and protects water environment aspect to bring into play important effect.Although VTS operator can pass through automatic identification system (AutomaticIdentificationSystem is called for short AIS) to a certain boats and ships, all boats and ships or determine that one the boats and ships in scope or specific region send note, but when area under one's jurisdiction ship motion situation, boats and ships data etc. are existed to query, should continue to communicate with it by speech VHF.Like this, VTS operator can assess the communication capacity of boats and ships on the one hand by voice communication; Under emergency situation, set up on the other hand a tie line.But VTS operator still adopts traditional radio telephone (normally using VHF phone) to complete voice communication tasks at present, the broadcast mode generally calling by a kind of method, exist: the one, VTS operator will call out multipass and could set up and communicate by letter with called boats and ships, and workload is large; The 2nd, if communication channel used, in busy, has delayed the measure of implementing Safe Avoidance of collision with regard to possibly completing communication, finally cause navigation safety accident.In order to overcome the shortcoming of traditional direct use radio telephone communication, should use the abbreviation of VHFDSC(DigitalSelective CallingTerminals, Digital Selective Calling Terminals) in, selective calling function reduces workload, improves communication success rate, if but used VHFDSC terminal to realize the selective calling to single ship by manual mode of operation, operator's labour intensity and workload could greatly have been increased.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of automatic call VHF Digital Selective Calling Terminals system, make operator's communication by DSC before carrying out voice communication set up rapidly communication link, to improve automaticity and the operating efficiency of VTS.

The utility model solves the technical scheme that its technical problem adopts: a kind of automatic call VHF Digital Selective Calling Terminals system is provided, comprise VHF assembly, Digital Selective Calling Terminals calling sequence processing unit and data processor, the input of described data processor is connected with VTS interface circuit, output is connected with the input of described Digital Selective Calling Terminals calling sequence processing unit, and the output of described Digital Selective Calling Terminals calling sequence processing unit is connected with VHF assembly.

The digital signal processor TMS320LF2407 that described data processor WeiTI company produces.

Described Digital Selective Calling Terminals calling sequence processing unit is to take a circuit that single chip computer AT 89C51 is core.

7 lines of the P0 mouth of described single chip computer AT 89C51 are as 7 column output lines, and 4 lines of P2 mouth are as 4 row input lines of keyboard.

Described VTS interface circuit comprises radar data interface circuit and AIS interface circuit.

Beneficial effect

Owing to having adopted above-mentioned technical scheme, the utility model compared with prior art, there is following advantage and good effect: the utlity model has automatic generation VHFDSC selective calling sequence signal and realize the selective calling function to single boats and ships, automatic calling system has replaced artificial key entry MMSI, has selected the relevant troublesome operation such as communication priority, improved calling efficiency, reduce labour intensity, promoted intellectuality and the automaticity of VTS.

Accompanying drawing explanation

Fig. 1 is the block diagram of system of the present utility model;

Fig. 2 is data processor block diagram of the present utility model.

Embodiment

Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.

Execution mode of the present utility model relates to a kind of automatic call VHF Digital Selective Calling Terminals system, as shown in Figure 1, comprise VHF assembly, Digital Selective Calling Terminals calling sequence processing unit and data processor, the input of described data processor is connected with VTS interface circuit, output is connected with the input of described Digital Selective Calling Terminals calling sequence processing unit, and the output of described Digital Selective Calling Terminals calling sequence processing unit is connected with VHF assembly.Wherein, described VTS interface circuit comprises radar data interface circuit and AIS interface circuit.

Data processor is the core of automatic call VHFDSC system, from VTS interface circuit, obtain radar signal and ais signal and carry out data fusion, extract the identification code (MMSI) of the corresponding target boats and ships of radar signal that VTS operator enrolls and send DSC calling sequence processing unit to; DSC calling sequence processing unit is after receiving the identification code (MMSI) of the called boats and ships that data processor sends, select subsequent voice communication channel, format character and type of call, automatically editor produces VHFDSC selective calling sequence data and removes to control VHFDSC on CH70 channel, sends individual calling signal.

Data processor mainly merges computing to radar signal and ais signal, from AIS extracting data, go out the maritime mobile service identification (MMSI) of target boats and ships, so the data operation quantity of data processor is larger, digital signal processor DSP (abbreviation of the DigitalSignalProcessor) TMS320LF2407 that the utility model selects TI company to produce.Embedded microprocessor because of DSP employing modified model Harvard architecture, utilizes program address bus, data read bus and three parallel work-flow address bus structures of data writing address bus, makes its arithmetic speed faster, and has abundant hardware resource.Data processor forms as shown in Figure 2.Radar and ais signal are sent into DSP by interface circuit respectively and are processed, and DSP send DSC calling sequence processing unit by VHFDSC interface after taking out MMSI.

When carrying out MMSI extraction, radar and AIS positional information are carried out to space-time calibration, adopt the nearest neighbor method algorithm of track association, the MMSI that determines the object ship of being enrolled gives DSC calling sequence processing unit.In order to raise the efficiency, data processor is being changed the local AIS positional information of VTS when not receiving new radar signal always, once receive, therefrom chooses 5 the AIS position datas nearest with object ship after radar signal and carries out the associated of flight path arest neighbors.

The effect of DSC calling sequence processing unit produces DSC calling sequence information by automatic mode exactly, sets up the communication that Radio Communications Link completes voice communication.Therefore DSC calling sequence processing unit is to take a circuit that single chip computer AT 89C51 is core, the automatic editor who completes calling sequence data.7 lines of P0 mouth (P0.0～P0.6) of AT89C51 are as 7 column output lines of keyboard, and 4 lines of P2 mouth (P2.0～P2.3) are as 4 row input lines of keyboard.

DSC calling sequence is exactly the coded sequence that comprises a series of information such as specific format, communication objective, callee MMSI, subsequent communications mode.Because VHFDSC only works, be in 156.525MHz frequency, and VHF terminal equipment only has DSC and RT up to now, this facilitates for realizing editor DSC calling sequence automatically.Single-chip microcomputer of the present utility model is selected the non-distress call sequence of DSC, and its information comprises format character (calling of SELECTIVE separate unit), type of call (SAFETY secure communication priority), the MMSI of called ship, subsequent communications frequency.

Be not difficult to find, the utlity model has automatic generation VHFDSC selective calling sequence signal and realize the selective calling function to single boats and ships, automatic calling system has replaced artificial key entry MMSI, has selected the relevant troublesome operation such as communication priority, improved calling efficiency, reduce labour intensity, promoted intellectuality and the automaticity of VTS.

Claims

1. an automatic call VHF Digital Selective Calling Terminals system, comprise VHF assembly, Digital Selective Calling Terminals calling sequence processing unit and data processor, it is characterized in that, the input of described data processor is connected with VTS interface circuit, output is connected with the input of described Digital Selective Calling Terminals calling sequence processing unit, and the output of described Digital Selective Calling Terminals calling sequence processing unit is connected with VHF assembly.

2. automatic call VHF Digital Selective Calling Terminals system according to claim 1, is characterized in that, the digital signal processor TMS320LF2407 that described data processor WeiTI company produces.

3. automatic call VHF Digital Selective Calling Terminals system according to claim 1, is characterized in that, described Digital Selective Calling Terminals calling sequence processing unit is to take a circuit that single chip computer AT 89C51 is core.

4. automatic call VHF Digital Selective Calling Terminals system according to claim 3, is characterized in that, 7 lines of the P0 mouth of described single chip computer AT 89C51 are as 7 column output lines, and 4 lines of P2 mouth are as 4 row input lines of keyboard.

5. automatic call VHF Digital Selective Calling Terminals system according to claim 1, is characterized in that, described VTS interface circuit comprises radar data interface circuit and AIS interface circuit.