CN206638827U - GPS difference high-precision positioners - Google Patents

Abstract

The utility model discloses a kind of GPS difference high-precision positioner,Including power module,Radio frequency processing module,Data processing module and application processing module,Power module electrically connects with radio frequency processing module and application processing module,Radio frequency processing module electrically connects with data processing module,Radio frequency processing module is connected with Anneta module,Data processing module electrically connects with UART232 and RTK modules,Data processing module uses STM32F103C876 chips,Application processing module uses MPU6050 chips,Radio frequency processing module uses Ublox8030,Use Ublox8030 chips,It is used for driving real-time clock by front reserce cell and maintains GPS SRAM/RTC real-time clock normal works,Communicated in order to very quickly be connected to satellite,Based on wireless communication module from RTCM base stations/differential networks downloading data,Realize high accuracy positioning.

Description

GPS difference high-precision positioners

Technical field

The utility model relates to mechanics of communication production field, more particularly to a GPS Differential positioning module.

Background technology

With the development of science and technology, increasing place needs to use positioner, such as computer technology, network service The new and high technologies such as technology, modern survey and draw technology, satellite location data treatment technology, and in these areas most are poor Divide locating module, the leading indicator of Differential positioning module is acquisition sensitivity, tracking sensitivity, starts time and positioning precision, The effect of most critical is to weigh the quality of its positioning precision performance in these indexs, but existing locating module is in stability side Not as good as total powerstation, RTK is easier to be influenceed by satellite situation, weather conditions, Data-Link status transmission in face.Signal intensity is weaker, Sky is blocked than more serious local GPS can not normal use, and the d GPS locating module of prior art, size is big, largely effects on Whole equipment uses space.

Utility model content

For weak point present in above-mentioned technology, the utility model provides a kind of GPS difference high accuracy positioning Zhang Zhi, Small volume, space is saved, satellite can be quickly connected to very much and be communicated.

To achieve these goals, the utility model provides a kind of GPS difference high-precision positioner, including power supply mould Block, radio frequency processing module, data processing module and application processing module, the power module is with radio frequency processing module and at Module electrical connection is managed, the radio frequency processing module electrically connects with data processing module, the radio frequency processing module and Anneta module Connection, the data processing module electrically connect with RTK (Real-time kinematic carrier phase difference technology) module, institute State data processing module and use STM32F103C876 chips, the application processing module uses MPU6050 chips, the radio frequency Processing module uses Ublox8030, power module provide 3.3V voltages to radio frequency processing module, application processing module and data at Module is managed, the PB7 pin of the data processing module and SDA (data wire) pin of application processing module connect, the data processing The PB6 pin of module and SCL (clock cable) pin of application processing module connect, and the RXD of radio frequency processing module (receives data End) the RX pin of pin and data processing module connect, TXD (transmission data terminal) pins and the data processing mould of radio frequency processing module The TX pin connection of block, the V-BCKP ends of radio frequency processing module and the positive terminal of reserve battery connect, the negative pole ground connection of reserce cell.

Wherein, between the RXD pin of the radio frequency processing module and the RX pin of data processing module, and radio frequency processing module TXD pins and data processing module TX pin between connected by RS232 serial line interfaces.

Wherein, promising 2 low pressure difference linear voltage regulators are set on the power module, two low pressure difference linear voltage regulators, The VCC inputted jointly is 5V, and output is 3.3V, and one of them is electrically connected with data processing module and application processing module, Another is electrically connected to radio frequency processing module.

Wherein, a width of 46mm of GPS difference high-precision positioner, a length of 52mm.

Wherein, it is provided with USB interface on GPS difference high-precision positioner.

The beneficial effects of the utility model are：Compared with prior art, GPS difference provided by the utility model is high-precision fixed Position device, including power module, radio frequency processing module, data processing module and application processing module, power module with radio frequency Module and application processing module electrical connection are managed, radio frequency processing module electrically connects with data processing module, radio frequency processing module and day Wire module connects, and data processing module electrically connects with UART232 and RTK modules, and data processing module uses STM32F103C876 chips, application processing module use MPU6050 chips, and radio frequency processing module uses Ublox8030, use Ublox8030 chips, it is used for driving real-time clock by front reserce cell and maintains GPS SRAM/RTC real-time clocks normal Work, is communicated, the action is referred to as " thermal starting ", based on wireless communication module in order to very quickly be connected to satellite From RTCM base stations/differential networks downloading data, high accuracy positioning is realized.Operation principle of the present utility model is, GPS difference is high Positioning device for accuracy is arranged on base station and is observed, and the precision coordinate according to known to base station, calculates base station and is defended The distance correction of star, and in real time sent a data by base station.Locating module while GPS observations are carried out, The correction that base station is sent is received, and its positioning result is corrected, so as to improve positioning precision.

Brief description of the drawings

Fig. 1 is the utility model embodiment GPS difference high-precision positioner module frame charts；

Fig. 2 is the utility model embodiment radio frequency processing module circuit diagram；

Fig. 3 is the utility model embodiment data processing module circuit diagram；

Fig. 4 is the utility model embodiment application processing module circuit diagram；

Fig. 5 is the utility model embodiment power module circuitry figure；

Fig. 6 is the wiring diagram of the utility model embodiment CPS difference high-precision positioners；

Fig. 7 is the utility model embodiment CPS difference high-precision positioner monnolithic case figures.

Main element symbol description is as follows：

1st, power module 2, radio frequency processing module

3rd, data processing module 4, application processing module

5th, Anneta module 6, RTK modules.

Embodiment

In order to more clearly state the utility model, the utility model is further described below in conjunction with the accompanying drawings.

Referring to Fig. 1, the utility model provides a kind of GPS difference high-precision positioner, including power module 1, radio frequency Processing module 2, data processing module 3 and application processing module 4, in the present embodiment, power module 1 and radio frequency processing module 2, Data processing module 3 and application processing module 4 electrically connect, and in the present embodiment, power module 1 exports 3.3V voltages, gives respectively Radio frequency processing module 2, data processing module 3 and application processing module 4 are powered, in the present embodiment, radio frequency processing module 2 and number Being electrically connected according to processing module 3, radio frequency processing module 2 is connected with Anneta module 5, and data processing module 3 electrically connects with RTK modules 6, Data processing module 3 uses STM32F103C876 chips, and application processing module 4 uses MPU6050 chips, radio frequency processing module 2 Using Ublox8030 chips, the PB7 pin of data processing module 3 are connected with the SDA pin of application processing module 4, data processing module 3 PB6 pin are connected with the SCL pin of application processing module 4, the RXD pins of radio frequency processing module 2 and the RX of data processing module 3 Pin is connected, and the TXD pins of radio frequency processing module 2 are connected with the TX pin of data processing module 3.

Compared with prior art, radio frequency processing module of the present utility model uses Ublox8030, uses Ublox8030 cores Piece, it is used for driving real-time clock by front reserce cell and maintains GPS SRAM/RTC real-time clock normal works, in order to Satellite is quickly connected to very much to be communicated, the action is referred to as " thermal starting ", based on wireless communication module from RTCM base stations/ Differential networks downloading data, realizes high accuracy positioning.

Referring to Fig. 2, radio frequency processing module 2 uses Ublox8030 chips, its 3rd pin timepluse pin connection one It is connected to ground after individual 1K resistance R6 and a diode DA2, the RF-IN pins of its 11st pin are connected with Anneta module 5, The OUT terminal of its Anneta module is connected with the 11st pin, and IN ends are connected with gps antenna, remaining port ground connection, in the present embodiment, Antenna is high-frequency microstrip antenna, and frequency 1.57542GHZ, impedance is 50 ohm.10th pin of radio frequency processing module 2,13 are drawn Pin and 24 pins ground connection, the 23rd pin connection 3.3V input voltages, two 2.2uf of connection electric capacity between 23 pins and 24 pins C11 and C12 filtering, meanwhile, 23 pins are connected with the V-BCKP pins of 22 pins by a diode DA1, in diode DA1 Anode tap by two-way 2.2UF electric capacity C14 and C15 filter, diode DA1 cathode terminal respectively except 2.2uf electricity It is outer to hold C13 filtering, is also associated with 1K resistance R2, the resistance is connected with reserve battery BT1 positive pole, reserve battery BT1 Negative pole ground connection, in the present embodiment, the 21st pin RXD ends of radio frequency processing module 2 and the RX pin of data processing module 3 and The TXD pins of radio frequency processing module 2 are electrically connected by RS232 serial interface data lines respectively with the TX pin of data processing module 3.

Referring to Fig. 3, in the present embodiment, data processing module 3 uses STM32F103C876 chips, wherein, at data No. 43 pin PB7 pin of reason module 3 is connected with the SDA pin of application processing module 4, and No. 42 of the data processing module 3 is drawn Pin PB6 pin are connected with the SCL pin of application processing module 4, meanwhile, on this two connecting lines, a 4.7K Europe of also connecting respectively The resistance R11 and R10, R11 of nurse and the other end of two resistance of R10 connect 3.3V input voltages and 2.2UF filter capacitor together C28, electric capacity C28 other end ground connection, in the present embodiment, the 5th pin OSC-IN ends of STM32F103C876 chips and the 6th After the resistance R12 of external 8MHZ crystal oscillator Y4,1M ohm is distinguished at pin OSC-OUT ends, then 22P electric capacity is connected respectively After C22 and 22P electric capacity 23, it is connected to ground.In the present embodiment, the 30th pin is TX pins, by RS232 data wires with penetrating The 20th pin TXD pins connection of frequency processing module 2, the 31st pin pass through RS232 data wires and radio frequency processing module 2 the 21st Pin RXD pins connect, in the present embodiment, 48 pins of STM32F103C876 chips, the 9th pin, the 24th pin and 36th pin JTCK is all connected with 3.3V input voltages.

Referring to Fig. 4, in the present embodiment, application processing module 4 uses MPU-6050 chips, the 24th pin SDA series connection Be connected after 22R resistance R9 with the 43rd pin of data processing module 3, after No. 23 pin SCL series connection 22R resistance R8 with data No. 42 pin for managing module 3 connects, after the 13rd pin VDD connection 0.1uf electric capacity C18 and C17 of MPU-6050 chips, with It is connected after 33nh inductance L3 series connection with 3.3V input voltages.

Referring to Fig. 5, in the present embodiment, set on power module 1 promising 2 low pressure difference linear voltage regulator LDO1 and LDO2, two low pressure difference linear voltage regulators, the VCC inputted jointly are 5V, and output is 3.3V, in the present embodiment, VCC voltages It is connected after 0.11uf electric capacity C6 and C7 and 0.1uf electric capacity C30 with LDO2 5.0V inputs, by voltage-stablizer After adjustment, then output supply data processing module 3 and application after the electric capacity C8 by 0.1uf, and 1UF electric capacity C9 and C10 The 3.3V voltages of processing module 4, in addition on one side, VCC voltages are by 1K resistance R1 partial pressure and 2.2UF electric capacity C2 and C1 filtering Be connected afterwards with LDO1 5.0V inputs, after the adjustment of voltage-stablizer, by 0.1uf electric capacity C3 and 2.2uf electric capacity C4 and C5 filtering, and 3.3V voltages are provided to radio frequency processing module 2 after 33nh inductance L1, and wherein the one of LDO1 End, voltage control also is carried out to LDO1 by 10R resistance R16.

Fig. 6-Fig. 7 is referred to, is the wiring diagram and monnolithic case figure of positioner, in the present embodiment, above-mentioned introduction Modules, formation GPS difference high-precision positioners on pcb board are uniformly fixedly mounted on, because the utility model is distinctive Structure and operation principle, whole GPS difference high accuracy positioning module can be designed to more compact, its a width of 46mm, it is a length of 52mm, it is 50% size of the high accuracy positioning module of prior art.

In the present embodiment, in order to preferably to GPS difference high-precision positioner carry out data import with everywhere, A USB interface is reconnected on data processing module 3, as data interaction port.

This is that GPS difference high-precision positioner is arranged on base station and is observed using new operation principle, The precision coordinate according to known to base station, calculate base station and obtain the distance correction of satellite, and by base station in real time by a number According to sending.Receiver user also receives the correction that base station is sent while GPS observations are carried out, and fixed to it Position result is corrected, so as to improve positioning precision.On base station, observe all satellites, according to base station known coordinate and The coordinate of every star, every satellite each moment is obtained to the actual distance of base station.Again compared with the pseudorange measured, puppet is obtained Away from correction, receiver user is transmitted it to, improves positioning precision；Carrier phase difference technology is two survey stations of real-time processing The difference method of carrier phase observed quantity, it is that the carrier phase of base station collection is issued into receiver user, carries out seeking poor solution Calculate coordinate.Carrier phase difference can make positioning precision reach Centimeter Level.Being widely used in dynamic needs the field of high precision position； Base station-movement station difference is to use two GPS difference high-precision positioners.One is base station GPS, and another is user GPS is held, and knows the coordinate of a known point, principle is that one GPS difference of erection is high-precision on the fixing point of known coordinate Positioner (title base station) is spent, differential data (RTCM) is gone out by the data calculation of GPS location data and known coordinate point, Error correction parameter real-time broadcasting to be gone out by Data-Link again, user terminal receives corrected parameter by Data-Link and is transmitted to GPS, After GPS receiver corrected parameter and the location data of oneself is modified resolving, you can positioning precision is brought up into meter level, even li Meter level.It is exactly differential system on beacon differential system, simply beacon differential system does not need user oneself to set up base station, because In view of following needs of real time differential system, maritime patrol office of national communication portion establishes 20 along the coastline in China coast from south to north The individual beacon station, these beaconing stations send RTCM differential calibration information in 24 hours, and its distance transmitted is：It is 300KM in inland Coverage, be at sea 500KM coverage.It is high-precision that user terminal only needs the GPS cans of a movement station to realize The real-time positioning of degree.

In the present embodiment, high-precision GPS system is made up of base station and movement station two parts, and base station broadcasts high accuracy GPS differential correcting informations, support more kinds of DIFFERENTIAL PROTOCOLs of RTCM/RTCA/CMR, and movement station is supported to receive different differential correcting letters Breath, the system of being arranged as required to are operated under DGPS or RTK difference modes.System not only has position, velocity information defeated in real time Go out, can also give periphery miscellaneous equipment to provide time synchronized source with time synchronized function, base station and movement station, the time is same Step precision can reach 10ns.

Advantage of the present utility model is：

1) GPS difference high-precision positioner is internally embedded ublox8030 chips, and front reserce cell is used for driving in real time Clock and the SRAM/RTC real-time clock normal works for maintaining GPS difference high-precision positioners, realize thermal starting, in order to non- Often satellite is quickly connected to be communicated；

2) compact structure, attachment structure of the present utility model can be arranged to whole GPS difference high-precision positioner Smaller than prior art 50% size, greatly save the volume of GPS high-precision devices.

Disclosed above is only several specific embodiments of the present utility model, but the utility model is not limited to this, is appointed What what those skilled in the art can think change should all fall into the scope of protection of the utility model.

Claims (5)

1. a kind of GPS difference high-precision positioner, it is characterised in that including power module, radio frequency processing module, data processing Module and application processing module, the power module electrically connect with radio frequency processing module and application processing module, at the radio frequency Reason module electrically connected with data processing module, the radio frequency processing module is connected with Anneta module, the data processing module and RTK modules electrically connect, and the data processing module uses STM32F103C876 chips, and the application processing module uses MPU6050 chips, the radio frequency processing module use Ublox8030, power module provide 3.3V voltages to radio frequency processing module, Application processing module and data processing module, the PB7 pin of the data processing module and the SDA pin of application processing module connect, The PB6 pin of the data processing module and the SCL pin of application processing module connect, the RXD pins and data of radio frequency processing module The RX pin connection of processing module, the TXD pins of radio frequency processing module and the TX pin of data processing module connect, radio frequency processing module V-BCKP ends and the positive terminal of reserve battery connect, the negative pole of reserce cell ground connection.

2. GPS difference high-precision positioner according to claim 1, it is characterised in that the radio frequency processing module Between RXD pin and the RX pin of data processing module, and the TX pin of the TXD pins of radio frequency processing module and data processing module it Between connected by RS232 serial line interfaces.

3. according to the GPS difference high-precision positioners described in claim 1, it is characterised in that be provided with the power module For 2 low pressure difference linear voltage regulators, two low pressure difference linear voltage regulators, the VCC inputted jointly is 5V, and output is 3.3V, and One of them is electrically connected with data processing module and application processing module, and another is electrically connected to radio frequency processing module.

4. according to the GPS difference high-precision positioners described in claim 1, it is characterised in that GPS difference high-precision positioners A width of 46mm, a length of 52mm.

5. according to the GPS difference high-precision positioners described in claim 1, it is characterised in that GPS difference high-precision positioners On be provided with USB interface.