CN210604993U

CN210604993U - Double-antenna positioning and orienting device

Info

Publication number: CN210604993U
Application number: CN202020608247.2U
Authority: CN
Inventors: 仝泽民; 孙蕊; 张伦宁; 郭坤豪
Original assignee: Nanjing Hengzhou Quasi Navigation Technology Co ltd
Current assignee: Nanjing Hengzhou Quasi Navigation Technology Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-05-22
Anticipated expiration: 2030-04-22

Abstract

The utility model relates to a two antenna location orienting device, it relates to the navigation location field. This positioning and orienting device includes: UM482 positioning module, FLASH nonvolatile storage module, HG1286412B LCD display module, RSM232D serial communication interface module, TPS54340 power management module, STM32L431RCT6 main control chip. The GNSS system supports a Beidou system and a GPS system; the system can adopt a double-difference RTK algorithm, the azimuth angle of the system is output in a combined mode, and the output precision can reach centimeter level. The functions of electric quantity detection and liquid crystal screen display can be realized, and latitude, longitude, angle, elevation and the like can be displayed on the liquid crystal screen. The positioning and orienting device is more suitable for high-precision and high-requirement occasions such as traffic measurement, surveying and mapping, GIS acquisition, driving school examination systems and the like, and has the characteristics of all weather, high precision, automation, high benefit and the like.

Description

Double-antenna positioning and orienting device

Technical Field

The utility model belongs to navigation location field, concretely relates to two antenna location orienting device.

Background

Currently, in the recognized technical field, a positioning terminal is a device widely applied in various fields, and can be used in the fields of vehicle navigation, monitoring, military, surveying and mapping, navigation and the like. The traditional positioning and orientation method adopts geodetic measurement, namely coordinates of two known points are provided in advance, then the position coordinates and the working azimuth angle of a measured carrier are calculated according to an angle value measured by an optical instrument, and when the measured carrier is far away from the known points or is shielded, auxiliary points are required to be measured to guide the coordinates to the measured carrier. This method has the disadvantage of being time consuming and only working in the daytime and requiring visibility conditions. With the development of GPS technology, especially the widespread adoption of carrier phase measurement technology, GPS has been used not only for positioning, but also for orientation, opening up a new application field for GPS.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a general GPS location orientation device to reach low-priced, quick effect, and satisfy anti-interference, real-time continuous output location orientation information and do not have the autonomous location orientation equipment of positioning error accumulation.

The utility model discloses a two antenna location orienting device, the device includes: a UM482 positioning module for receiving positioning orientation information; the FLASH nonvolatile storage module is used for storing positioning orientation data and user configuration data; the HG1286412B liquid crystal screen display module is used for displaying positioning and orientation information; the RSM232D serial communication interface module is used for communication between the modules and a user; the TPS54340 power management module is used for carrying out intelligent charging management on the battery; and the STM32L431RCT6 main control chip is used for receiving the data of the UM482 positioning module, sending the data to the HG1286412B liquid crystal screen display module and reading and writing the FLASH nonvolatile storage module.

Furthermore, the double-antenna positioning and orienting device is provided with a liquid crystal touch screen, an operation button, two antenna interfaces and two UART communication interfaces.

Furthermore, the UM482 positioning module is connected with two signal receiving antennas, and the chip is input by double antennas, supports antenna signal detection, supports positioning and orientation simultaneous output, has a 20Hz data output rate, and supports differential input RTCM format adaptive identification.

Further, the FLASH nonvolatile storage module adopts a FLASH memory with a large-capacity memory model of W25Q 16 FW.

Furthermore, the HG1286412B LCD display module is an LCD with Chinese character library and communicates with the STM32L431RCT6 main control chip through the SPI.

Furthermore, the RSM232D serial communication interface module is powered by 3.5V or 5V voltage, and the baud rate maximally supports 115200 bps.

Furthermore, the TPS54340 power management module adopts an adjustable step-down chip with a high-end MOSFET integrated therein, the supported input voltage range is 4.5V-42V, and the maximum load working current is 3.5A.

Further, the STM32L431RCT6 main control chip supports all ARM single-precision data processing instructions and data types by adopting a Cotex-M4 kernel of an ARM framework.

Has the advantages that: the utility model discloses instrument structure, convenient to use, positioning accuracy is high, and various attitude measurement systems can be applied to the split type receiver antenna design of high flexibility, can provide the accurate real-time course of static or dynamic platform, every single move attitude angle. The high-precision GPS/BDS shipborne terminal needs to realize high-precision positioning and orientation, wherein the realization of the high-precision positioning function depends on the pseudo-range correction number broadcasted by the shore base station. After the ship-borne terminal receives the pseudo-range correction number, the pseudo-range obtained by self measurement is corrected, the pseudo-range observed quantity with higher precision is obtained, and the positioning precision is further improved. In offshore and inland waterways this approach can achieve positioning accuracy of around 1 meter in time.

Compared with the prior art, the utility model has the advantages of as follows.

1. The double-antenna high-precision double-module positioning plate module is adopted, and single BDS or single GPS positioning can be realized, and combined positioning can also be realized; a single set of equipment can realize high-precision positioning, azimuth angle and pitch angle; high dynamic data output, and the data update rate supports 1Hz, 2Hz and 5 Hz; two power source interface can use battery or external power supply, and two serial ports satisfy the use of more demands. The 100MB memory data storage can automatically record the original data, and the original data can not be lost even if the computer is shut down.

2. The positioning system is suitable for a more severe and longer-distance positioning environment, supports GPS/BDS single-system independent positioning and GPS + BDS multi-system combined positioning, and is compatible with an imported mainboard in terms of hardware size, interface and data instruction.

3. The method has the advantages of interference resistance, high sensitivity and the like, outputs continuous positioning and orientation information, has no accumulated positioning error and has good practical value.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 shows a schematic structural diagram of a positioning and orienting device according to the present invention.

Detailed Description

The technical scheme of the utility model includes following function.

1. The core function is as follows: and acquiring the receiver NMEA0183 statement through a serial port, extracting positioning orientation data, filtering, regenerating the NMEA0183 statement and outputting the NMEA0183 statement to a user.

2. The algorithm function is as follows:

(1) a simple filter is realized, and the positioning orientation data is smoothed;

(2) the parameters that need to be filtered are as follows: the ground heading is in a GPRMC statement; speed, in GPRMC statement; heading, which is positioned in GPHDT statement; the rotating speed is positioned in a GPROT statement;

(3) the time constant is used to adjust the bandwidth of the filter;

(4) the receiver needs to set 10Hz to output a GPRMC statement and a GPHDT statement for filtering.

3. Protocol analysis: receiver protocol, NMEA0183 protocol; the receiver protocol is mainly used to set up the receiver.

4. The communication function is as follows: the baud rate of the serial port of the receiver can be set, and 115200 is the default baud rate; the user serial port baud rate can be set, and the default baud rate is 115200.

5. Non-volatile storage: after the system is powered on, software needs to read user configuration from a nonvolatile memory, initialize parameters and set a receiver; when the user inputs the instruction for saving the current configuration, the current configuration needs to be written into the nonvolatile storage.

6. And monitoring the electric quantity.

7. The liquid crystal screen has the display function: the contents of the liquid crystal display include: angle, longitude, latitude, elevation.

The following is a preferred embodiment of the present invention, and the following is a further description of the technical solution implemented by the present invention with reference to fig. 1.

As shown in figure 1: a double-antenna positioning and orienting device is characterized in that an STM32L431RCT6 main control chip is connected with an UM482 positioning module, a FLASH nonvolatile storage module, an HG1286412B liquid crystal screen display module, an RSM232D serial communication interface module and a TPS54340 power management module. The UM482 positioning module is connected with the double antennas; reading the system configuration by the FLASH nonvolatile storage module, and writing the user configuration; the HG1286412B LCD screen display module displays the positioning and orientation result, including latitude, longitude, angle and altitude information; the RSM232D serial communication interface module supports two serial interfaces for communication with a user.

The present invention has been described herein in terms of specific exemplary embodiments. It will be apparent to those skilled in the art that appropriate substitutions or modifications may be made without departing from the scope of the invention. The exemplary embodiments are meant to be illustrative only and not limiting as to the scope of the invention which is to be given the full breadth of the appended claims.

Claims

1. A dual antenna positioning and orienting device, comprising:

a UM482 positioning module for receiving positioning orientation information;

the FLASH nonvolatile storage module is used for storing positioning orientation data and user configuration data;

the HG1286412B liquid crystal screen display module is used for displaying positioning and orientation information;

the RSM232D serial communication interface module is used for communication between the modules and a user;

the TPS54340 power management module is used for carrying out intelligent charging management on the battery;

and the STM32L431RCT6 main control chip is used for receiving the data of the UM482 positioning module, sending the data to the HG1286412B liquid crystal screen display module and reading and writing the FLASH nonvolatile storage module.

2. The dual antenna positioning and directional orientation device of claim 1, wherein the UM482 positioning module is coupled to two signal receiving antennas.

3. The dual antenna positioning and orienting device of claim 1 wherein said FLASH nonvolatile memory module utilizes FLASH memory having a mass storage model number W25Q 16 FW.

4. The dual-antenna positioning and orienting device of claim 1, wherein the HG1286412B LCD display module is an LCD with chinese character library, and communicates with the STM32L431RCT6 main control chip through SPI.

5. The dual-antenna positioning and orienting device of claim 1, wherein the RSM232D serial communication interface module is powered by 3.5V or 5V, and has a baud rate of 115200 bps.

6. The dual-antenna positioning and orienting device of claim 1, wherein the TPS54340 power management module employs an adjustable buck chip with an internal integrated high-side MOSFET, supports an input voltage range of 4.5V to 42V, and has a maximum load operating current of 3.5A.

7. The dual-antenna positioning and orienting device of claim 1, wherein the STM32L431RCT6 main control chip supports all ARM single-precision data processing instructions and data types by using an ARM-based Cotex-M4 core.