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Measuring device for voltage measurement

A technology for measuring equipment and voltage, applied in the direction of measuring electrical variables, only measuring voltage, measuring devices, etc., can solve problems such as damage to the operation of household appliances, power consumption fluctuations under overvoltage conditions, etc.

Pending Publication Date: 2022-06-03
BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such fluctuations can lead to overvoltage situations and / or power consumption fluctuations in the household appliance and thus, if necessary, to damage to the operation of the household appliance

Method used

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  • Measuring device for voltage measurement
  • Measuring device for voltage measurement
  • Measuring device for voltage measurement

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Experimental program
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Embodiment Construction

[0020] As explained at the outset, this document relates to enabling stable and reliable operation of domestic appliances in an efficient manner even in the event of fluctuations in the supply voltage. In this relationship, figure 1 An exemplary household appliance 100 , such as a washing machine, is shown, which has a mains connection 102 , in particular a switching power supply, by means of which the household appliance 100 can be connected to an alternating current supply voltage 103 . The domestic appliance 100 comprises a measuring device 110 which is arranged to detect one or more measuring signals related to the supply voltage 103 . One or more measurement signals can be evaluated by the control unit 101 of the household appliance 100 (eg by means of a microprocessor), in particular in order to adapt the operation of the household appliance 100 to the respective current characteristics of the supply or mains voltage 103 , eg amplitude and / or or frequency. Therefore, s...

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Abstract

The invention relates to a measuring device (110) for measuring an AC input voltage (103). The measuring device (110) comprises a first voltage divider (211) which is designed to couple a first pole of the input voltage (103) to a first pole of the at least one measuring resistor (215) such that the scaled voltage (202) is present on the measuring resistor (215) as a scaled version of the input voltage (103). Furthermore, the measuring device (110) comprises a biasing unit (213), which is designed to shift the scaled voltage (202) by biasing the DC voltage (203) in order to provide an offset voltage (204), which has no polarity transformation.

Description

technical field [0001] The invention relates to a device, in particular a circuit arrangement for measuring voltage, in particular alternating voltage. Background technique [0002] Household appliances, such as washing machines or dishwashers, usually have a mains connection, in particular a switching power supply, by means of which the household appliance can be connected to an AC power supply network. The grid voltage provided by the power supply network may have fluctuations with respect to the voltage level and / or with respect to the frequency. Such fluctuations can lead to overvoltage conditions and / or fluctuations in power consumption in the household appliance and thus, if necessary, impair the operation of the household appliance. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by this document is that a reliable and stable operation of the household appliance can be achieved even with fluctuations in the supply voltage. [0004] This techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R15/04
CPCG01R19/00G01R15/04G01R19/0084G01R15/14
Inventor V·卡普赛列亚J·哈斯C.豪策内德S·斯特罗卡
Owner BSH BOSCH & SIEMENS HAUSGERAETE GMBH