CN201007739Y - Beidou and GPS navigation information syncretizing machine - Google Patents

Abstract

The utility model relates to an information blending device with navigate of the Big Dipper and GPS comprising a complex and programmable logic device CPLD, an MCU module for data extraction, an MCU module for data composition and an MCU module for video composition. The complex and programmable logic device CPLD is employed for automatic switchover input signals of the Big Dipper and GPS, a data communicating path and a vision signal control, The MCU module for data extraction is used for transferring serial data into parallel data, and then for providing the parallel data for the MCU module for data composition. The MCU module for video composition is used for data analysis of the signals of the Big Dipper, and for packing data according to NMEA mode, then sending data to a navigation and location platform. The MCU module for video composition is utilized for inputting received video into signals, and simultaneously superposing geographic coordinates and temporal information to a video source, and then sending the video source with geographic coordinates and temporal information to the navigation and location platform.

Description

The Big Dipper and GPS navigation information fusion machine

Technical field

The utility model relates to a kind of guider, and more particularly, the utility model relates to a kind of Big Dipper and GPS (Global Positioning System Global Positioning System (GPS)) navigation information that is applied to global position system and merges machine.

Background technology

The big-dipper satellite positioning system be China in 2000 the end of the year independent development the NAVSTAR with independent intellectual property right, be not limited by international any constraint, but its bearing accuracy is not high, data updating rate is low, real-time is poor, user capacity is limited, and the electronic chart software that can directly adopt Big Dipper signal also seldom.GPS is all weather navigation system global position system covering the whole world of the U.S., civilian part is open to the whole world, the precision height, the data updating rate height, the map source is abundant, yet the navigation positioning system of simple GPS mode can not satisfy actual needs completely, for example for the consideration of strategic aspect, (such as the war) U.S. may close the gps satellite positioning signal in some unusual time, cause the subregion, some areas are unavailable, and the GPS if existing systems places one's entire reliance upon will certainly cause great loss.For the electronic chart software of supporting navigator fix, generally only support the GPS locating information simultaneously, limited its application.

The utility model content

In order to summarize the purpose of this utility model, some aspect of the present utility model, advantage and novel feature have been described here.Should be appreciated that, need not all these aspects, advantage and feature and be included among arbitrary special embodiment.

The utility model just is being based on the consideration of above-mentioned background technology, the big-dipper satellite locating information is converted to the NMEA form, reach the purpose that merges mutually with GPS information, common application is in navigation positioning system, both complement one another, and no matter are can both guarantee to adopt navigation positioning system of the present invention also can normally work in peace or unusual time.

Adopt and different in the past technology paths in the utility model implementation procedure, the navigation positioning system platform of the so-called before support Big Dipper/GPS location is often by some company's independent development, directly Big Dipper signal and gps signal are directly resolved in navigation positioning system platform inside, though can realize the Big Dipper/GPS location, but this navigation positioning system does not possess versatility, make the user if use Big Dipper signal carries out navigator fix, then must use the navigation positioning system platform of the said firm.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of Big Dipper and GPS navigation information fusion machine, it comprises complex programmable logic device (CPLD), be used to the to automatically switch Big Dipper signal and the gps signal of input, data communication passage and vision signal control;

Data extract MCU module is used for serial data is changed into parallel data, it is supplied with the synthetic MCU module of data use;

Data are synthesized the MCU module, are used for carrying out data parsing at Big Dipper signal, and according to the NMEA form data are carried out package, send to the navigator fix platform by serial ports;

Video synthesizes the MCU module, is used for and will accepts video input signals, and stack geographic coordinate and temporal information on video source are sent to the navigator fix platform more simultaneously.

The utility model inserts processor by two RS232 interfaces respectively with Big Dipper information and GPS information, with manual or (optional automatically, automatically be that the Big Dipper is preferential), switch both information, extract longitude and latitude, highly, behind the time service information, again synthetic simple NMEA form, offering computing machine by the 3rd RS232 serial ports, thereby reach the purpose of the shared same location navigation platform of double star, simultaneously message handler can also be blended into the longitude and latitude temporal information among the vision signal of input, makes the geographic coordinate information and the temporal information that can comprise video source in the vision signal of output automatically.Can use present most electronic chart software and navigator fix software directly to support Big Dipper positioning signal easily by this technology.

Description of drawings

Fig. 1 is a system chart of the present utility model;

Fig. 2 is the utility model Big Dipper and GPS navigation information fusion machine structured flowchart

Fig. 3 is circuit theory diagrams of the present utility model;

Fig. 4 is the schematic diagram of CPLD part in the Fusion Module of the utility model embodiment.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is a system chart of the present utility model, RS232 1 interface automatic reception Big Dipper signal wherein, RS232 2 interface automatic reception gps signals, the Big Dipper/GPS Fusion Module is according to input navigation signal type, automatically carry out the conversion of the Big Dipper/gps data form, unification converts the data of NMEA form to, and sends data to the navigator fix platform by RS232 3 interfaces.The Big Dipper/GPS Fusion Module also provides the video superimpose function in addition, utilizes the Vin interface to be used for receiving video signals, with geography information and the temporal information video source that is added to, and gives video reception apparatus by Vout interface outputting standard vision signal.

Fig. 2 is the theory diagram of the Big Dipper/GPS Fusion Module, among the figure

Complex programmable logic device (CPLD) function be the to automatically switch Big Dipper signal and the gps signal of input, data communication passage and vision signal control;

The MCU data extract) function is serial data is changed into parallel data, and it is synthetic that it is supplied with the MCU data) use;

The MCU data are synthetic) function is to carry out data parsing at Big Dipper signal, and data are carried out package according to the NMEA form, send to the navigator fix platform by serial ports;

The MCU video is synthetic) function is and will accepts video input signals that stack geographic coordinate and temporal information on video source are sent to the navigator fix platform more simultaneously.

Fig. 3 is the circuit theory diagrams of the Big Dipper/GPS Fusion Module.Wherein the principle of CPLD as shown in Figure 4.And U1, U2, U3 represents the MCU data extract respectively), the MCU video is synthetic), the MCU data are synthetic).Label is that 1 part is the video superimpose processing module in Fig. 3, be used for geographic coordinate and temporal information are superimposed to input video stream, and output.

Fig. 4 is the schematic diagram of CPLD part in the Big Dipper/GPS Fusion Module.Schematic diagram probably is divided into four parts, and with 1,2,3,4 mark.Wherein the part of label 1 is the MCU data extract) and the MCU video synthetic) between bidirectional data path and handshake control circuit.74373 chips are used for the data on the latch data bus, and 7474 chips are used to control the handshake of both-way communication.In like manner, label 2 parts are the MCU data extract) and the MCU data synthetic) between bidirectional data path and handshake control circuit, label 3 parts are the MCU data extract) and input signal between bidirectional data path and handshake control circuit.Label 4 parts are the control that is used for the Big Dipper/gps signal of input is carried out manual switchover and automatic switchover in addition.

Though the utility model with preferred embodiment openly as above; but they are not to be used for limiting the present invention; anyly be familiar with this skill person; in the spirit and scope that do not break away from the utility model; can do various variations or retouching from working as, what therefore protection domain of the present utility model should be defined with the application's claim protection domain is as the criterion.

Claims (1)

1. the Big Dipper and GPS navigation information fusion machine is characterized in that it comprises complex programmable logic device (CPLD), the Big Dipper signal and the gps signal of the input that is used to automatically switch, data communication passage and vision signal control;

Data extract MCU module is used for serial data is changed into parallel data, it is supplied with the synthetic MCU module of data use;

Data are synthesized the MCU module, are used for carrying out data parsing at Big Dipper signal, and according to the NMEA form data are carried out package, send to the navigator fix platform by serial ports;

Video synthesizes the MCU module, is used for and will accepts video input signals, and stack geographic coordinate and temporal information on video source are sent to the navigator fix platform more simultaneously.

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