Holland Scientific, Inc.

Crop Circle Mapping System


The Crop Circle Mapping System is a useful tool for collecting plant biomass or soil data in real-time. Crop Circle Mapping Systems can be mounted to virtually any type of vehicle. Data collected by the system can provide useful information related to plant health, vigor and spatial variability. The system utilizes GeoSCOUT GLS-400 datalogger to collect and georeference data from a multi-sensor array of Holland Scientific Crop Circle crop canopy sensors. Georeferenced sensor data are stored in a text format on SD flash cards having storage capacities up to 1 Gigabyte and can easily be accessed by third party map rendering software. Instrument configuration is performed using easy-to-navigate menus. Configuration settings are saved in nonvolatile memory to be utilized by the GeoSCOUT to configure the mapping system every time it is operated.

  • Real-time sensor georeferencing
  • Supports single or multi sensor networks (1 to 8 sensors)
  • Simple one-button logging
  • User defineable vehicle speed threshold for conditional datalogging
  • Data storage up to 1 Gigabyte on a standard SD Flash card
  • Supports 1Hz or 5Hz GPS sensors
  • Data recorded using standard Comma-Separated-Variable (CSV) file format


  • Memory Type: SD FLASH
  • Memory Capacity: 128 MB to 1 GB
  • File System: DOS FAT compatible
  • Display: 2 line by 16 character temperature compensated LCD
  • Backlight Control: User selectable; 4 levels
  • GPS COMM Port: 2400, 4800, 9600, 19200 and 38400 baud; no parity, 8 data bits and 1 stop bit
  • GPS NMEA 2.0 Strings: $GPRMC and $GPGGA are required
  • GPS Sample Rates: Detects and logs GPS data streams updated at 1 and 5 Hz
  • Sensor COMM Port (RS-485): Half-duplex, multi-drop network; supports up to 8 Cop Circle sensors running GeoSCOUT GLS-420 mapping software
  • Data Collection Rate: Determined by GPS update rate (1 or 5 smples per second)
  • Serial Port and GPS Port Connector: Male DB-9 connector
  • Power Requirements: 8VDC to 16VDC @ 2000 mA max
  • Operating Temperature: 0F to 122F (-18C to 50C)

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