公开(公告)号：US20190101582A1

公开(公告)日：2019-04-04

申请号：US16094552

申请日：2017-04-13

Applicant: AVL DiTest GmbH

Inventor： Christian Huber ,  Roman Riegler

IPC: G01R31/04 ,  G01R19/155

Abstract: To determine in a simple and unequivocal manner whether measurement contacts at which a voltage is to be measured have been properly contacted in a measurement system, in the measurement system, after a discharge switch connecting a charging circuit to a voltage measurement device is closed, the charging circuit is discharged via an internal resistance of the voltage measurement device. When the discharge switch is closed, after a measurement switch connecting the voltage measurement device to the measurement contacts is closed, it is established whether the electrical system is contacted with the measurement system by analyzing the voltage curve at the voltage measurement device after closure of the measurement switch. Advantageously, after the discharge switch is closed, the charging circuit is discharged via a discharge resistor connected in series or in parallel with the voltage measurement device and via the internal resistance.

公开(公告)号：US10753985B2

公开(公告)日：2020-08-25

申请号：US16094552

申请日：2017-04-13

Applicant: AVL DiTest GmbH

Inventor： Christian Huber ,  Roman Riegler

IPC: G01R31/68 ,  B60L3/00 ,  G01R19/155 ,  B60L3/12 ,  G01R31/00 ,  B60K6/20

Abstract: To determine in a simple and unequivocal manner whether measurement contacts at which a voltage is to be measured have been properly contacted in a measurement system, in the measurement system, after a discharge switch connecting a charging circuit to a voltage measurement device is closed, the charging circuit is discharged via an internal resistance of the voltage measurement device. When the discharge switch is closed, after a measurement switch connecting the voltage measurement device to the measurement contacts is closed, it is established whether the electrical system is contacted with the measurement system by analyzing the voltage curve at the voltage measurement device after closure of the measurement switch. Advantageously, after the discharge switch is closed, the charging circuit is discharged via a discharge resistor connected in series or in parallel with the voltage measurement device and via the internal resistance.