METHOD OF DETECTION AND REEJECTION OF ELECTRONIC DEVICES ILLEGALLY CONNECTED TO WEIGHING-MACHINE CABLE LINE

摘要

FIELD: instrumentation.SUBSTANCE: offered invention relates to instrumentation and describes a method of detection and rejection of electronic devices illegally connected to the weighing-machine cable line. For implementation of the method the pre-measured readings of the weighing-machine at the pre-set fixed weight are compared with the nominal value of the pre-set fixed weight. In case of deviation of readings of the weighing-machine by a value exceeding the allowable error of the weighing-machine the weight measuring sensors and the secondary electronic equipment are disconnected from the cable communication line of the weighing-machine. Then to one of conductors of the cable communication line of the weighing-machine through the additional communication line a current sensor of and a voltage generator are connected. The voltage supplied by the voltage generator through the current sensor is increased until current step in the additional communication line, then these operations are repeated for all conductors of the cable communication line of the weighing-machine.EFFECT: possibility of simultaneous detection and rejection of electronic devices illegally connected to the weighing-machine cable line.1 dwg