Utility model content
The utility model is to provide a kind of navigation positioning system based on 3D sensor and auxiliary mobile phone, is intended to solve existing automotive positioning low precision, start-up time long, and gps signal blocks or shielding etc. causes that navigation makes mistakes and misleads the problem of navigating.
The utility model is to realize like this, a kind of navigation positioning system based on 3D sensor and auxiliary mobile phone, this navigation positioning system comprises Navigation Control module, inertial navigation message processing module, TFT driver module, gps signal receiver module, power transfer module, vehicle velocity signal parsing module and wireless communication module, described Navigation Control module connects described inertial navigation message processing module, described TFT driver module, wireless communication module connects respectively described Navigation Control module, described gps signal receiver module, vehicle velocity signal parsing module output terminal connects respectively described inertial navigation message processing module input end, described Navigation Control module, inertial navigation message processing module, TFT driver module, gps signal receiver module, vehicle velocity signal parsing module and wireless communication module are electrically connected respectively described power transfer module.
Further technical scheme of the present utility model is: this navigation positioning system also comprises gyroscope angular velocity parsing module, described gyroscope angular velocity parsing module output terminal connects described inertial navigation message processing module input end, and described gyroscope angular velocity parsing module is electrically connected described power transfer module.
Further technical scheme of the present utility model is: this navigation positioning system also comprises barometer height above sea level parsing module, described barometer height above sea level parsing module output terminal connects described inertial navigation message processing module input end, and described barometer height above sea level parsing module is electrically connected described power transfer module.
Further technical scheme of the present utility model is: this navigation positioning system also comprises audio frequency processing power amplifier module, described audio frequency is processed power amplifier module output terminal and is connected described Navigation Control module input, and described power transfer module is electrically connected described audio frequency and processes power amplifier module.
Further technical scheme of the present utility model is: this navigation positioning system also comprises a smart mobile phone, and described smart mobile phone adopts wireless telecommunications to connect described wireless communication module.
Further technical scheme of the present utility model is: described wireless telecommunications adopt blue-tooth technology.
Further technical scheme of the present utility model is: described barometer height above sea level parsing module comprises FREESCALE car rule level piezo-resistive silicon microprocessor sensor and microelectronics mixing integrated micro pressure device, and described FREESCALE car rule level piezo-resistive silicon microprocessor sensor connects described microelectronics mixing integrated micro pressure device.
Further technical scheme of the present utility model is: described gyroscope angular velocity parsing module adopts EPSON XV8000 rate-of-turn gyroscope sensor.
Further technical scheme of the present utility model is: described gps signal receiver module adopts serial mode to communicate by letter with described inertial navigation message processing module.
The beneficial effects of the utility model are: by radio communication base station network, download ephemeris, year calendar, precise time and satellitosis and assist onboard navigation system to carry out complementation location, eliminated satnav precision and satellite-signal and blocked and cause that navigation is unstable and mislead boat, by GPS and the compound technology of inertial navigation, realized that automotive positioning start-up time is short, positioning precision is high.
Embodiment
Reference numeral: 10-Navigation Control module 20-inertial navigation message processing module 30-vehicle velocity signal parsing module 40-barometer height above sea level parsing module 50-gyroscope angular velocity parsing module 60-wireless communication module 70-power transfer module 80-GPS signal receiving module 90-TFT driver module 91-audio frequency is processed power amplifier module.
As shown in Figure 1, the navigation positioning system based on 3D sensor and auxiliary mobile phone that the utility model provides, this navigation positioning system comprises Navigation Control module 10, inertial navigation message processing module 20, TFT driver module 90, gps signal receiver module 80, power transfer module 70, vehicle velocity signal parsing module 30 and wireless communication module 60, described Navigation Control module 10 connects described inertial navigation message processing module 20, described TFT driver module 90, wireless communication module 60 connects respectively described Navigation Control module 10, described gps signal receiver module 80, vehicle velocity signal parsing module 40 output terminals connect respectively described inertial navigation message processing module 20 input ends, described Navigation Control module 10, inertial navigation message processing module 20, TFT driver module 90, gps signal receiver module 80, vehicle velocity signal parsing module 30 and wireless communication module 60 are electrically connected respectively described power transfer module 70.By cordless communication network, downloading ephemeris, year calendar, precise time and satellitosis assists onboard navigation system to carry out complementation location, eliminated satnav precision and satellite-signal and blocked and cause that navigation is unstable and mislead boat, by GPS and the compound technology of inertial navigation, realized that automotive positioning start-up time is short, positioning precision is high.
Described TFT driver module 90 is browsed for showing the confession users such as the job information of current modules and navigation information.
The data of 20 pairs of described vehicle velocity signal parsing modules 30 of described inertial navigation message processing module, barometer height above sea level parsing module 40, gyroscope angular velocity parsing module 50,80 outputs of gps signal receiver module, according to different data, do corresponding algorithm process, output is the information such as current coordinate accurately.Described inertial navigation message processing module 20 is to adopt the structure of a single-chip microcomputer to form.
Described Navigation Control module 10 is control cores of whole system, employing be that RAM core SOC (system on a chip) forms.
Described power transfer module 70 after linear voltage stabilization, DC/DC conversion, is supplied with vehicle body power supply other modules stable low noise burning voltage is provided.
Described vehicle velocity signal parsing module 30 carries out the speed pulse signal of vehicle after Isolation, shaping level conversion, by 20 pairs of speed pulse signals of inertial navigation message processing module, is gathered, is processed.Described vehicle velocity signal parsing module 30 is connected with described inertial navigation message processing module 20, by the counting to velocity pulse, according to wheel diameter, can obtain the operating range of gate time in the cycle, thus the speed of calculating.
Described wireless communication module 60 is connected with described Navigation Control module 10, by wireless network, carries out data information exchange.
Described gps signal receiver module 80 is connected with Navigation Control module 10, by gps signal receiving element, capture after the satellite-signal of tracking, the microprocessor of gps signal receiving element extrapolate the longitude and latitude in general geographic position, user place, highly, the information such as speed and time.
This navigation positioning system also comprises gyroscope angular velocity parsing module 50, described gyroscope angular velocity parsing module 50 output terminals connect described inertial navigation message processing module 20, and described gyroscope angular velocity parsing module 50 is electrically connected described power transfer module 70.
Described gyroscope angular velocity parsing module 50 adopts EPSON XV8000 rate-of-turn gyroscope sensor.
Inertial navigation message processing module 20 described in described gyroscope angular velocity parsing module 50, utilize gyroscope angular-rate sensor to go collection vehicle angular velocity deflection information, the variation gyroscope of angle can change into a continuous variable quantity magnitude of voltage of output, by delivering to Navigation Control module 10 by SPI interface after hardware circuit filtering, sampling, AD conversion.
This navigation positioning system also comprises barometer height above sea level parsing module 40, described barometer height above sea level parsing module 40 output terminals connect described inertial navigation message processing module 20 input ends, and described barometer height above sea level parsing module 40 is electrically connected described power transfer module 70.
Described barometer height above sea level parsing module 40 comprises FREESCALE car rule level piezo-resistive silicon microprocessor sensor and microelectronics mixing integrated micro pressure device, described FREESCALE car rule level piezo-resistive silicon microprocessor sensor connects described microelectronics mixing integrated micro pressure device, includes adc circuit and interface circuit.20 pressure and temperature parameters of resolving precision are provided, by atmospheric variation tendency in measuring vehicle traveling process, then have followed the relation conversion according to air pressure and height above sea level to obtain current sea level elevation variation tendency.By three-wire interface, above-mentioned information is sent to Navigation Control module 10, the elevation information and the rate signal that obtain with GPS calculate and proofread and correct.This modular design has adopted self calibration, under the requirement that meets measurement promptness, has reduced working clock frequency and switching rate for reducing measuring error, signal is carried out to temperature compensation, make the precision of highly measuring reach 0.3M, meet the demand of the multilevel traffics such as overhead grade separation and tunnel to navigation elevation information.
This navigation positioning system also comprises audio frequency processing power amplifier module 91, and described audio frequency is processed power amplifier module 91 input ends and connected described Navigation Control module 10 output terminals, and described power transfer module 70 is electrically connected described audio frequency and processes power amplifier module 91.
This navigation positioning system also comprises a smart mobile phone, and described smart mobile phone adopts wireless telecommunications to connect described wireless communication module.
Described wireless telecommunications adopt blue-tooth technology.
It is network assistant GPS location that wireless communication module 60 is mainly realized AGPS positioning instant net, and wireless communication module 60 is interconnected by Bluetooth technology and smart mobile phone, and smart mobile phone first arrives location server by the address, base station of itself by Internet Transmission; Location server arrives onboard navigation system according to the Position Approximate transmission of this mobile phone GPS supplementary (ephemeris that comprises GPS and azimuth pitch angle etc.) relevant to this position, and the supplementary that vehicle mounted guidance module provides according to network receives GPS original signal; Vehicle mounted guidance is restituted signal after receiving GPS original signal, calculates mobile phone to the pseudorange of satellite, and will by Internet Transmission, arrive location server for information about; Location server completes the processing to GPS information according to the GPS pseudorange information transmitting, and improves positioning precision; Greatly shorten the time of catching first gps signal.
Gps signal receiver module 80 mainly carries out reception and the parsing of satellite-signal, by terminal module receive, the broadcast C/A coded signal of demodulation of satellite, the pseudo-distance of computing and each satellite, adopts Distance Intersection method to obtain these four parameters of longitude, latitude, height and time correction of the position of receiver.Gps signal receiver module 80 is constantly exported the locating information of NMEA form and supplementary to inertial navigation message processing module 20 by serial communication, inertial navigation message processing module 20 carries out overall treatment by data by certain algorithm and flows to Navigation Control module 10, receives these information process and map match by Navigation Control module 10.
The utility model is compared with prior art with following improvement: improve and be to assist onboard navigation system to locate fast by radio communication base station information, further improve and be by the orientation angles information in gyroscope survey vehicle traveling process, utilize the current boat position information of inertia dead reckoning, the locating information obtaining from satellite is compared and proofreaied and correct, improvement causes that because satnav precision and satellite-signal block navigation is unstable and mislead boat, further improve the altitude information in the vehicle traveling process that is to measure by baroceptor, obtain the height change information in vehicle in front is advanced, follow the variation tendency according to current location height, set up three-dimensional running model, carry out autonomous inertial navigation, solution is poor or there is no three-dimensional navigation and a location under gps signal in gps signal positioning precision, for actual application brings great convenience.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.