WE-HPP-EVK-F9-B helps automatic mowers work with high-precision positioning

I. Background overview

With the development of intelligent demand in the lawn mower industry, robotic lawn mowers have gradually appeared in the public eye. Navigation and localization is an important part of it.

For the lawn mower industry, the traditional lawn mower navigation data mainly rely on sensors to provide, the usual practice is to bury cables in the ground to delineate the work area, the use of eddy current sensors to achieve, so that the obvious disadvantage is the need to carry out the work of cable laying beforehand to enclose the work area and the range of obstacles, one of the preliminary work is too complex, and the second is a waste of manpower and capital, especially the high cost of manpower in foreign countries In the case of foreign countries, this part of the cost is a larger burden.

The pain points that high-precision navigation and positioning can solve are very obvious. In the open field can make the lawn mower to achieve centimeter-level positioning accuracy, on the basis of this accuracy, there is no need to lay cables, and can even preset the path, cutting graphics. It also saves labor costs and is easier to use.

II. Products

WE-HPP-EVK-F9-BThat is, F9 core board, based on the Swiss U-Blox F9 series centimeter-level high-precision positioning module design, to achieve centimeter-level positioning. The purpose is to facilitate users to quickly develop high-precision positioning products.

1. Realize centimeter-level positioning, support GPS/BEIDOU/GLONASS/GALILEO all galaxies, support dual-band.

2. It can be directly connected to a computer via Micro USB for testing.

3. It can be set as a base station or mobile station by configuration.

4. Can be plugged into the supporting baseboard, with Digi Xbee long-distance wireless module to transmit differential data for rapid evaluation.

5. The peripheral design refers to U-Blox recommended devices and requirements, safe and reliable.

6. Can be used directly for mass production.

III. Application block diagram

IV. GNSS positioning hardware composition:

1. Base station section:

High-precision positioning requires the input of differential data to enable the positioning module to upgrade from meter-level positioning to centimeter-level positioning, and the differential data can generally be generated by the positioning module or provided through a differential data service provider. The application of lawn mowers is more suitable for the way to set up a base station because the application scenarios of lawn mowers tend to work within a certain range, and generally a base station can cover a radius of 20 kilometers, which can make all the lawn mowers within the range enter into high precision, and most cases can be satisfied. Mowers are into high precision, most of the situation can be satisfied. The base station is generally required to be set up in the open scene, as high as possible without obstruction, such as the roof, etc., with the wireless module to send the differential data to the mobile terminal.

Specific use can be modified through the USB configuration of the core board, connected to the wireless module through the serial port, the actual use of the device on the normal power can be, without having to pay attention to the positioning data of the base station.

2. Mobile:

Receive base station differential access to high precision positioning on lawn mowers. The core board leads out the U-Blox ZED-F9P common pins for easy integration into the user's design. The core board supports raw observation output, which can be used by users according to their needs, or they can directly use the navigation information output from the module.