The present disclosure relates to an agricultural monitoring system and method for monitoring a nutrient flow within an agricultural site. The method comprises the steps of detecting a quantity related to a carried material of a known material type; determining a nutrient content of the captured material based on the detected quantity and based on at least one nutrient content parameter value associated with the carried material; obtaining information related to a source location and a target location for the carried material, and forming information related to the nutrient flow, said information comprising the source location, the target location, information related to the determined nutrient content of the carried material and preferably material type of the carried material.

The present disclosure relates to an agricultural monitoring system and method for monitoring a nutrient flow within an agricultural site. The method comprises the steps of detecting a quantity related to a carried material of a known material type; determining a nutrient content of the captured material based on the detected quantity and based on at least one nutrient content parameter value associated with the carried material; obtaining information related to a source location and a target location for the carried material, and forming information related to the nutrient flow, said information comprising the source location, the target location, information related to the determined nutrient content of the carried material and preferably material type of the carried material.

A method and device for weight determination of a load lifted by an actuator in a hydraulic lifting device are disclosed. A pressure signal is generated using a pressure gauge, a deviation signal is generated based on a flow signal and a setpoint, and a regulation signal is generated based on the deviation signal to regulate the actuator. An inclination signal is generated using an inclination gauge. The weight of the load is determined based on the pressure signal, the deviation signal, the regulation signal, and the inclination signal.

A method and device for weight determination of a load lifted by an actuator in a hydraulic lifting device are disclosed. A pressure signal is generated using a pressure gauge, a deviation signal is generated based on a flow signal and a setpoint, and a regulation signal is generated based on the deviation signal to regulate the actuator. An inclination signal is generated using an inclination gauge. The weight of the load is determined based on the pressure signal, the deviation signal, the regulation signal, and the inclination signal.

A water bag pressure detection device (100), a water bag inflow control device (1000) and a water bag type water purifier are provided. The water bag pressure detection device (100) includes: a base seat (10) defining an airtight cavity (101) therein, and having an upper end provided with a mounting opening; a pressure sensor module (20) having at least a lower portion disposed in the airtight cavity (101) and connected with a circumferential edge of the mounting opening in a sealing manner, an inductive head (22) of the pressure sensor module being configured to abut against a lower portion of the water bag; and a ventilation member (30) defining a ventilation passage (301) therein and disposed to the base seat, the ventilation passage (301) being provided with a balancing seal member (40) configured to move in the ventilation passage (301) along with variations of pressure in the airtight cavity (101) and outside pressure.

A hydraulic mass-determining unit arranged for determining the mass of a load held by a hydraulic fluid system, the mass-determining unit is adapted to be connected to a hydraulic pump at a first fluid connection and a hydraulic actuator of a lifting device at a second fluid connection, the mass-determining unit comprises a first pipe arranged for connecting the first fluid connection and the second fluid connection, and at least one pressure sensor arranged to measure the pressure in the first pipe, wherein the mass-determining unit further comprises a flow regulator with a pressure compensator, where the flow regulator is serially connected to the first pipe to regulate the flow in the first pipe, and one of a pressure switch arranged for measuring the pressure difference over the flow regulator, and for sending a signal to the pressure sensor to measure the pressure in the first pipe when the pressure difference is above a preset value, or a magnetic field switch that comprises a magnet attached to the pressure compensator and a detecting unit arranged for detecting whether the magnet and the pressure compensator are in an initial position, and for sending a signal to the pressure sensor to measure the pressure in the first pipe when the detecting unit detects that the pressure compensator is not in the initial position, and a processor for based on the measured pressure in the first pipe by the pressure sensor calculating a mass of the load.

A hydraulic mass-determining unit arranged for determining the mass of a load held by a hydraulic fluid system, the mass-determining unit is adapted to be connected to a hydraulic pump at a first fluid connection and a hydraulic actuator of a lifting device at a second fluid connection, the mass-determining unit comprises a first pipe arranged for connecting the first fluid connection and the second fluid connection, and at least one pressure sensor arranged to measure the pressure in the first pipe, wherein the mass-determining unit further comprises a flow regulator with a pressure compensator, where the flow regulator is serially connected to the first pipe to regulate the flow in the first pipe, and one of a pressure switch arranged for measuring the pressure difference over the flow regulator, and for sending a signal to the pressure sensor to measure the pressure in the first pipe when the pressure difference is above a preset value, or a magnetic field switch that comprises a magnet attached to the pressure compensator and a detecting unit arranged for detecting whether the magnet and the pressure compensator are in an initial position, and for sending a signal to the pressure sensor to measure the pressure in the first pipe when the detecting unit detects that the pressure compensator is not in the initial position, and a processor for based on the measured pressure in the first pipe by the pressure sensor calculating a mass of the load.

A weight scale system for measuring the weight of an object includes a bed section, a vertical separator actuator and a controller. The bed section includes a lower-platform, an upper-platform and weight sensor assemblies located on the lower-platform, each includes at least one weight sensor. The bed section further includes at least one vertical-separator. The vertical-separator actuator is coupled with the vertical-separator and with the controller. The controller is further coupled with the weight sensors. The controller directs the vertical-separator actuator to operate the bed section in at least two modes, a referencing mode in which the vertical-separator detaches the upper-platform from the weight sensor assemblies, thereby enabling referencing the weight sensors, and a weighing mode, in which the vertical separator re-attaches the upper-platform with the weight sensor assemblies, such the that the weight associated with the upper-platform is fully applied on the weight sensors.

A weight scale system for measuring the weight of an object includes a bed section, a vertical separator actuator and a controller. The bed section includes a lower-platform, an upper-platform and weight sensor assemblies located on the lower-platform, each includes at least one weight sensor. The bed section further includes at least one vertical-separator. The vertical-separator actuator is coupled with the vertical-separator and with the controller. The controller is further coupled with the weight sensors. The controller directs the vertical-separator actuator to operate the bed section in at least two modes, a referencing mode in which the vertical-separator detaches the upper-platform from the weight sensor assemblies, thereby enabling referencing the weight sensors, and a weighing mode, in which the vertical separator re-attaches the upper-platform with the weight sensor assemblies, such the that the weight associated with the upper-platform is fully applied on the weight sensors.

The invention relates to an apparatus for ballast weighing on a crane, comprising at least two ballasting cylinders that are equipped to lift/lower the ballast and that each comprise at least one pressure transducer in the region of the piston and/or rod side, and comprising at least one evaluation unit that is equipped to calculate the mass moved by the ballasting cylinders from the pressures detected by the pressure transducers on retraction and/or extension of the ballasting cylinders, excluding the friction forces occurring in the ballasting cylinders. The invention furthermore is directed to a method for calculating the ballast weight of a crane by means of a corresponding apparatus.