Method for Identifying a Sample in a Container and Associated Measuring Device

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

The patent describes a method and device for identifying the contents of a container, such as bottles or other packaging, without opening it. The system operates by placing the container near or within a resonator, exciting the resonator using high-frequency (microwave) signals, and measuring changes in the resonance frequency and quality factor caused by the sample inside. By comparing these measurements with and without the sample, the type of substance (liquid, solid, or gas) can be quickly and non-invasively determined.

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

• Security screening at airports or border checkpoints to identify unknown liquids in bottles without opening them (e.g., detecting hazardous materials or distinguishing drinkable from non-drinkable substances).
• Quality control and verification in the food and beverage industry where packaged goods must be validated without breaking seals.
• Industrial monitoring of raw material properties (such as water content in wood or grains) in sealed packaging.
• Medical or pharmaceutical inspection of drugs or biological samples contained in vials or ampoules, especially when samples may be dangerous or sterile.
• Detection of tampering or substitution in consumer goods by verifying the authenticity of contents inside a closed container.
• Mobile/handheld scanners for law enforcement, customs, or field inspections to quickly analyze unknown substances on-site.

BenefitsContent extracted from patent full text and abstract with AI.

• Non-invasive and non-destructive, allowing contents to be identified without opening the container—reducing risk of contamination, exposure, or hazards.
• Rapid results (measurements can be obtained in milliseconds), enabling high-throughput applications such as security checkpoints or production lines.
• High selectivity and reliability due to analysis of both frequency shift and quality factor, making it possible to distinguish between a wide range of substances.
• Works for various container materials (glass, plastic, ceramic) and shapes, including labeled and partially metallized packages under certain conditions.
• Avoids the need for direct contact with potentially hazardous samples, improving safety for operators.
• Automation potential—results can be displayed or processed by software, making the technology accessible even to non-experts.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to a method for identifying a sample in a container, comprising the following steps: the container with the sample is disposed in the form of a resonator; a high-frequency signal is injected into the resonator for exciting a resonant mode of the resonator; the resonant electric field of the resonator penetrates a part of the sample in the container; the resonance curve of at least one resonant mode is measured with and without the sample; the sample is identified on the basis of the determined variation of resonance frequency compared to a measurement without sample. The invention also relates to an associated measuring device.