True ground speed for Off-Highway Vehicles

The MSO AccoSat is a speed sensor based on DGPS and a 3D accelerometer. By means of this sensor fusion the system reacts rapidly on acceleration (start and stop). This is especially advantageous for monitoring, control and closed-loop control on off-highway and agricultural machinery.

The AccoSat system measures the forward speed by means of a triaxial accelero­meter and a DGPS receiver. AccoSat deploys a DGPS receiver optimized for speed measure­ment. The speed measure­ment - in contrary to detection on gear­box or wheel - is unaffected by effective tyre circum­ference, sinking-in and wheel slip. This is particulary advantegous for all applications needing an accurate speed signal for example for product application proportional to distance/area e.g. seeding, spraying and spreading. The AccoSat System does achieve high accuracy, dynamics and reliability of the speed measure­ment by means of a sensor fusion of a 3D accelero­meter with a DGPS receiver.The AccoSat provides for real time true ground speed for “outdoor/off - highway” applications for monitoring, control and closed loop control of machinery functions. Optionally DGPS positioning data (NMEA-0182) are output over a serial (RS232) interface.

The AccoSat System does achieve high accuracy, dynamics and reliability of the speed measure­ment by means of a sensor fusion of a 3D accelero­meter with a DGPS receiver.The AccoSat provides for real time true ground speed for “outdoor/off - highway” applications for monitoring, control and closed loop control of machinery functions. Optionally DGPS positioning data (NMEA-0182) are output over a serial (RS-232) interface.

AccoSat DGPS Datasheet

AccoSat Data sheet here and further details on request.

Benefits/Use

• Exact measure­ment of speed over ground and distance covered independent on wheel slip, effective tyre circum­ference and sinking in of the tyre.
• No calibration required.
• High dynamics and update rate for monitoring of wheel slip, control and closed-loop control of application output.
• Easy installation on a vehicle, possibly under plastic cover.
• Unsusceptible to varying ground properties.
• Standard pulse output proportional to speed according to DIN 9684/ISO 11786, "Radar - compatible".
• Exact monitoring, control and closed-loop control of application rate proportional to forward speed/area covered.
• Option: DGPS positioning (WAAS/Egnos diff. correction) with NMEA 0183 output for e.g. documen­tation, telematics.

Technical data