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US 10,863,666 B2Granted
Method for calibration of feed rate of a metering device and a metering device
AssigneeVäderstad Holding AB
InventorCrister Stark
Life of this patent
Estimating the term…
Abstract
A method and system for calibrating the feed rate of a metering device for airflow-borne feeding of granular material in an agricultural implement. The method of calibrating the feed rate of the metering device comprises a first volumetric feeder with a first metering rotor arranged to feed granular material to an airflow channel.
Claims18
A method for calibration of feed rate of a metering device for airflow-borne feeding of granular material in an agricultural implement, the metering device comprising:
- a first volumetric feeder with a first metering rotor arranged to feed a first granular material to an airflow channel and
- a second volumetric feeder with a second metering rotor arranged to feed a second granular or powdered material to the airflow channel, the method comprising:
- to drive the agricultural implement during a first time period,
- to drive only the first metering rotor at a first rotational speed for feeding a first granular material during the first time period,
- by means of a granule-counting device, to count a number of fed granules in the airflow channel of the first granular material,
- based on the number of granules and the first rotational speed, to calculate a first feed rate of the first feeder,
- to drive the agricultural implement during a second time period,
- to drive the first metering rotor during the second time period so that a first predetermined granular feed rate is provided, and
- to drive the second metering rotor during the second time period so that both the first and the second material are fed into the airflow channel.
6 more elements
A metering device for airflow-borne feeding of granular material in an agricultural implement, comprising:
- a first container for a first granular material,
- a first volumetric feeder with a first metering rotor arranged to feed the first material from the first container to an airflow channel,
- a second container for a second granular or powdered material,
- a second volumetric feeder with a second metering rotor arranged to feed the second material from the second container to the airflow channel,
- the second feeder being arranged to feed the second material to the airflow channel, and
- the airflow channel being arranged to lead the first and second material to a plurality of feeder tools of the agricultural implement,
- a granule-counting device for counting the number of granules being transported in the airflow channel, the granule-counting device being arranged downstream of the first and second feeder, and
- a control unit for controlling the first and second feeder, the control unit being arranged:
- during a first time period, to drive only the first metering rotor at a first rotational speed,
- during the first time period, to collect data from the granule-counting device representing the number of granules,
- based on said number of fed granules per unit time and the first rotational speed of the metering rotor, to calculate a first feed rate of the first feeder, and
- during a second time period, to drive the first and second feeder, the first feeder being driven to provide a first predetermined granule feed rate.
9 more elements
Dependencies are inferred from the claim text.