Measuring Electrical Capacitance Between Electrodes Independent of Grounding Conditions

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention provides a device for measuring electrical capacitance between two electrodes. It is designed so that accurate capacitance measurements can be obtained regardless of grounding conditions by using two spaced electrodes each connected to a grounded AC voltage source with opposite or differential output voltages. The current flowing between the electrodes is used to determine the capacitance.

Use CasesContent extracted from patent full text and abstract with AI.

• Industrial or laboratory measurement of capacitance in sensor systems
• Quality control in manufacturing of capacitive devices or components
• Non-destructive testing of materials by measuring their dielectric properties
• Measurement of fluid levels or material presence using capacitive principles in process industries
• Integration into automated equipment for real-time capacitance monitoring

BenefitsContent extracted from patent full text and abstract with AI.

• Provides precise capacitance measurements independent of ground characteristics, improving accuracy and reliability
• Enables measurements in diverse environments where grounding cannot be controlled or guaranteed
• Simplifies measurement setups by eliminating the need for special grounding arrangements
• Can be applied to a range of capacitive sensing applications, enhancing versatility
• Supports high-sensitivity measurements, beneficial for detecting small capacitance changes

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Patent Abstract

The invention relates to devices for determining electrical capacitance. The devices are characterized in particular by the fact that the electrical capacitance between two measuring electrodes can be measured independently of the grounding properties. For this purpose, two measuring electrodes are arranged spaced apart side by side. Each of the measuring electrodes is connected to a grounded alternating voltage source, wherein the output voltages of the alternating voltage sources are inverted or differential to each other and the flowing current is a measure for determining the electrical capacitance between the measuring electrodes.