Workswell’s WIRIS Agro is the first device of its kind designed to map water stress across large areas in the field of precision agriculture. The aim of this method and device is to determine the value of water stress in the plant stand. For example, this information may be used to determine yield maps, optimize irrigation, or control water management remedies. Camera offers LWIR band sensor (640×512) and 10x optical zoom RGB camera with resolution full HD (1920 x 1080 px).

800 x 600 px

LWIR Band Sensor

10X

Optical Zoom

1920 x 1080 px

Full HD Resolution

800 x 600 px

LWIR Band Sensor

10X

Optical Zoom

1920 x 1080 px

Full HD Resolution

Crop Water Stress Index

ACCESSIBLE CROP WATER MANAGEMENT

The crop water stress index (CWSI) was developed (in 1981) as a normalized index to quantify stress and overcome the effects of other environmental parameters affecting the relationship between stress and plant temperature.

MEASURING WATER STRESS

CROP DROUGHT, ACTUAL AND REAL VALUE

In the dry season what we are usually interested in is the actual effects of drought on crops. These impacts are not only dependent on the condition of the so-called climatic drought, but also on the groundwater drought, the size of the plant root system, etc. Measuring the water stress of plants with WIRIS Agro will help you to determine the actual and real effects of drought on the crop.

 

A CWSI of 0 indicates no water stress, and a value of 1 represents maximum water stress. The cropwater stress that signals the need for irrigation is crop specific and should consider factors such as yield response to water stress, probable crop price, and water cost. Reginato and Howe (1985) found that cotton yield showed the first signs of decline when the CWSI average during the season was greater than 0.2.

POTENTIAL YIELD MAPS

Based on the value of water stress, an approximate potential yield map can be determined. Obviously, the more plants are hit by drought, the lower their yield. Worksell CWSI Analyzer software, that comes in bundle with WIRIS Agro, makes it possible to generate potential yield maps from a large number of images across many hectares in a very short time (Challenging calculations common, for example, for orthophotogramers are not needed).

 

With WIRIS Agro you can get actual values of crop water stress during the flight, or you can use the collected data to create an overview map. By comparing yields from different years depending on water stress, a potential yield map can be created according to the current water stress value.

POTENTIAL YIELD MAPS

Based on the value of water stress, an approximate potential yield map can be determined. Obviously, the more plants are hit by drought, the lower their yield. Worksell CWSI Analyzer software, that comes in bundle with WIRIS Agro, makes it possible to generate potential yield maps from a large number of images across many hectares in a very short time (Challenging calculations common, for example, for orthophotogramers are not needed).

 

With WIRIS Agro you can get actual values of crop water stress during the flight, or you can use the collected data to create an overview map. By comparing yields from different years depending on water stress, a potential yield map can be created according to the current water stress value.

MONITOR WATER STATUS

icons8-water-100

To monitor water stress, ie. the lack of water that the crop is exposed to during the growing season. And regardless of whether the crops are irrigated or not. Special colour map “Crop” and “CropStep” are available.

icons8-water-100

To monitor water stress, ie. the lack of water that the crop is exposed to during the growing season. And regardless of whether the crops are irrigated or not. Special colour map “Crop” and “CropStep” are available.

MANAGE IRRIGATION MANAGEMENT

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Irrigation system optimization both in terms of determining suitable locations for the location of soil sensors and in terms of structure optimization. Special colour map “Water” and “WaterStep” for that application are available.

PHENOTYPING

icons8-field-100-2

Different plant varieties are susceptible to the amount of water available. The WIRIS Agro will help you determine how often the plants of a given species are in water stress, compared to plants of other species.

icons8-field-100-2

Different plant varieties are susceptible to the amount of water available. The WIRIS Agro will help you determine how often the plants of a given species are in water stress, compared to plants of other species.

SOFTWARE INCLUDED

CWSI ANALYZER

Workswell CWSI Analyzer is a desktop software used to processing of CWSI images. It allows setting of individual parameters necessary for correct calculation of CWSI, both tabular and additional measurement. The software includes predefined most common crops where table values are entered directly. The big advantage of the software is the ability to process hundreds of images at once (mass data processing).

The software is supplied free of charge to the WIRIS Agro.

SPECIAL FEATURES

WIRIS OS – MAXIMIZE THE FULL POTENTIAL

Operating system WIRIS® OS has been in development for over 4 years now (and tested on the previous generations of the Workswell WIRIS® cameras) and therefore allows you to maximize the full potential of sensoric and computing hardware and thus get the functionalities which the similar products with no operating system cannot even come close to

DURABLE DESIGN

WIRIS® Agro is protected by a rugged case made of lightweight aluminium. In addition, its most sensitive part, i.e. the thermal camera lens, is protected by a replaceable protective cap made of germanium.

256 GB OR 512 SSD DISK, EXTERNAL USB DISK OR MICROSD CARD

Workswell WIRIS® Agro camera is equipped with an internal SSD disc with 128 GB or 256 GB memory for recording. It is also possible to save data to external USB disk or microSD card.

WEIGHT AND DIMENSIONS

WIRIS® Agro weighs less than 430 g, which very convenient for drone usage.

  • WEIGHT: < 430 g
  • DIMENSIONS : L83 x W85 x H68 mm

SPECS


CWSI onboard processing
Evaluation of Crop Water Stress Index onboard 
Operating onboard system
CSWI OS for full real-time data streaming and evaluation during flight
  • operating system ensures the full access to all camera functions
  • easy camera control via S.Bus, CAN bus, MavLink, RJ-45 or Trigger
10x Optical Antivibration zoom
Full HD 10x optical zoom camera with anti-vibration compensation

CSWI camera specification

CSWI sensor resolution 640 x 512 pixels
CSWI evaluation Workswell patented CWSI camera technology based on crop water stress index (normalized to value from 0 to 1) brings information about the crop stress and crop water management on large areas. The information can then be used to determine yield maps, manage irrigation or implement water management related remedies.
FPA active sensor size 1.088 x 0.8705 cm
Type of sensor LWIR band sensor
CWSI evaluation range 0 – 1 (1 means very stressed)
Temperature sensitivity 0.03 °C (30 mK)
CWSI calibration Yes, calibrated for different ambient temperatures
Field of view of the lens 45°
CWSI Colour-map 4 colour maps for CWSI and Water management evaluation
CWSI range settings Automatic, manual or span
CWSI calibration 1 – 14x continuous
Software CWSI analyzer Yes, included in the package

Digital visual camera

Resolution 1 920 x 1 080 pixels (Full HD),
1/3” sensor,
Auto white balance,
Wide dynamic range,
Backlight compensation,
Exposure and Gamma control
Optical zoom 10x optical zoom with vibration compensation and image stabilisation
View angle Ultra zoom 6.9° – extra wide 58.2°, focal 33.0 mm – 3.3 mm
Noise reduction Special 3D noise reduction function
Focus Autofocus with Direct Focus Zoom synchronization

Memory and data recording

Memory
  • Internal high-speed SSD 256 GB or 512 GB for image and video recording
  • External slot for Micro SD card & USB 2.0 for USB stick for taking images
Image and video formats
  • CWSI JPEG images and Digital camera Full HD JPEG images
  • Digital camera h.264 encode video HD recording
  • Full-frame CWSI video recording (raw data recording)
GPS tagging (image & video) MavLink or External GPS or DJI A3 controllers compatible via CAN bus

Interfaces & real-time remote control

10-pin digital port
  • S.Bus
  • CAN bus (compatible with DJI M600 and A3 controllers)
  • MavLink
  • External GPS connectivity
  • External trigger
Ethernet (RJ-45) port Video streaming and camera control (optional on request only)
Micro USB 2.0 port Mass storage
Camera control and video streaming (optional on request only)
USB 2.0 port Keyboard connection for in-house WIRIS camera control
Remote control system CWSI OS ensures real-time control of all camera functions during the flight
Remote control options S.BUS protocol
CAN bus for real-time control on DJI M600 and GPS geo-tagging
RJ-45 for wireless uplink installation (video streaming and camera control)
Protective filter on lens Filter protects the lens against external damage during the flight
Camera functions Measurement functions:

  • online CWSI evaluation
  • spot CWSI evaluation (Centre)
  • area CWSI evaluation (Max and Min)

Periodic capturing:

  • capturing CWSI image and Visible image simultaneously
Camera modes visualization Full-screen mode, Picture-in-Picture, Full Dual-screen, Dual-screen
Micro HDMI video output 1 280 x 720 pixels (720p), Aspect ratio 16:9, Micro HDMI video output

Software & SDK

Desktop software Advanced Workswell CWSI analyzer for CWSI evaluation

Power supply, weight & dimensions

Input supply voltage 9 – 36 VDC, Coaxial 2 x 6.4 mm, outer shell – GND
Power dissipation (avg.) 12 W
Weight < 430 grams
Dimensions (L x W x H) 83 mm x 85 mm x 68 mm
Mounting 2 x 1/4-20 UNC thread (1x bottom side, 1x upper side)
Housing material Durable aluminium body for long-time measurement stability

Environmental

Operating temperature range -10 °C to +50 °C
Storage temperature range -30 °C to +60 °C