Anritsu has been granted a patent for a metal detection apparatus that can accurately determine whether a passing metal is magnetic or non-magnetic. The apparatus uses a detection unit to analyze the magnetic field fluctuation caused by the metal’s passage and a determination unit to compare the data with pre-obtained samples to determine the type of metal. GlobalData’s report on Anritsu gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Anritsu, Wireless network optimization was a key innovation area identified from patents. Anritsu's grant share as of September 2023 was 29%. Grant share is based on the ratio of number of grants to total number of patents.
Metal detection apparatus that determines type and size of metal
A recently granted patent (Publication Number: US11762118B2) describes a metal detection apparatus that utilizes an alternating magnetic field to detect metals in an object. The apparatus includes a magnetic field generator that produces the alternating magnetic field in an inspection area, and a magnetic field detection unit that detects the fluctuation of the magnetic field caused by the presence of a metal object.
The detection circuit unit of the apparatus performs processing to detect the first and second fluctuation components of the magnetic field fluctuation signal on the in-phase and quadrature phase sides of a reference signal, respectively. A determination unit then analyzes these components to identify the type and size of the metal contained in the object.
The determination unit includes a phase determination unit that compares the phase data of the object's magnetic field fluctuation signal with sample signal phase data obtained from various metal samples. This allows the apparatus to determine the type of metal present in the object. Additionally, an amplitude determination unit compares the amplitude data of the object's magnetic field fluctuation signal with sample signal amplitude data obtained from metal samples of different sizes. This helps determine the size of the metal in the object.
The patent also describes a metal type determination unit that discriminates the type and size of the metal based on boundary information of the distribution area on orthogonal coordinates. This information includes curved boundary line information that aids in determining the distribution area.
Furthermore, the apparatus includes a statistics and history processing unit that performs analysis on objects that have passed through the inspection area. This unit uses the determination results from the determination unit to execute statistics and history processing of the inspected objects.
The patent also mentions the ability of the determination unit to identify the source of a contaminant metal in the object by correlating the type of metal with the upstream apparatus that may have caused the contamination.
Overall, this metal detection apparatus offers advanced capabilities for accurately detecting and identifying metals in objects, providing valuable information for quality control and safety purposes.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
