MONITORING OF LIQUID EJECTION SYSTEM

摘要

A monitoring arrangement for a liquid ejection apparatus capable of ejecting liquid in a pattern on an interior surface of a tank, the monitoring arrangement comprising a sensor unit that generates a signal indicative of liquid coming into contact with the interior surface of the tank, and a processing unit configured to: receive the signal; retrieve a reference property that is indicative of liquid coming into contact with the interior surface; register, during a measuring period when the fluid nozzle ejects liquid, at least one current property of the signal; compare the current property with the reference property; and initiate, if the current property deviates from the reference property beyond a predetermined level, a message indicative of the deviation.

主权项

1. A monitoring arrangement for a liquid ejection liquid system that comprises an ejection apparatus having a pipe configured to extend into a tank and to receive a liquid, wherein a rotary head is arranged on the pipe and is fitted with a fluid nozzle for ejecting the liquid in a pattern on an interior surface of the tank, the monitoring arrangement comprising
a sensor unit configured to be mounted to the tank such that the sensor unit generates a signal indicative of liquid coming into contact with the interior surface of the tank, and a processing unit configured to receive from the sensor unit the signal indicative of liquid coming into contact with the interior surface of the tank, the monitoring arrangement wherein the processing unit is configured to
retrieve from a memory unit a reference property that is indicative of liquid coming into contact with the interior surface,register, during a measuring period when the fluid nozzle ejects liquid towards the interior surface of the tank, at least one current property of the signal generated by the sensor unit,compare the current property with the reference property, andinitiate, if the current property deviates from the reference property beyond a predetermined level, a message indicative of the deviation.