# US 2024/0201412 A1 · Frequency-modulation type metal tracker > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0201412 A1 - Document ID: US20240201412A1 - Status: Published application - Kind: A1 - Application number: 18/520,961 - Filed: 2023-11-28 - Published: 2024-06-20 - Earliest claimed: 2022-12-15 - Assignees: Chi Kang Ronald Chou; Meet Electronics Ltd. - Applicants: Meet Electronics Ltd. - Inventors: CHI KANG RONALD CHOU - Web page: https://patentgrep.com/patent/US20240201412A1 ## CPC - G01V 3/08: operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices (with electromagnetic waves G01V3/12) - G01V 3/10: using induction coils - G01V 3/165: operating with magnetic or electric fields produced or modified by the object or by the detecting device (with electromagnetic waves G01V3/17) - Y02D 30/70: in wireless communication networks - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Disclosed is a frequency-modulation type metal tracker, relating to the technical field of detecting instruments. The frequency-modulation type metal tracker includes a metal tracking transmitter which can modulate a wireless frequency-modulation tracking signal and broadcast the wireless frequency-modulation tracking signal to the outside through a metal object, and a metal tracking receiver which can receive the wireless frequency-modulation tracking signal from the metal tracking transmitter, demodulate the wireless frequency-modulation tracking signal, and reproduce information of the wireless frequency-modulation tracking signal. The present disclosure mainly solves the problem of how to provide equipment that can remotely detect and track metal objects. The frequency-modulation type metal tracker can detect and track metal objects such as wires and cables, steel bars, metal water supply and drainage pipes, metal heating and ventilation pipes, and metal racks which are buried in walls, under the ground, and in large objects, to facilitate use by operating personnel. ## Claims ### Claim 1 A frequency-modulation type metal tracker, comprising a metal tracking transmitter and a metal tracking receiver, wherein the metal tracking transmitter modulates a wireless frequency-modulation tracking signal and broadcasts the wireless frequency-modulation tracking signal to the outside through a metal object; and the metal tracking receiver receives the wireless frequency-modulation tracking signal from the metal tracking transmitter, demodulates the wireless frequency-modulation tracking signal, and reproduces information of the wireless frequency-modulation tracking signal. ### Claim 2 (depends on 1) The frequency-modulation type metal tracker according to claim 1, wherein the information of the wireless frequency-modulation tracking signal at least comprises existence and intensity of the wireless frequency-modulation tracking signal. ### Claim 3 (depends on 1) The frequency-modulation type metal tracker according to claim 1, wherein the metal tracking transmitter comprises a main control U1 and a wireless frequency-modulation tracking signal transmission module, and the wireless frequency-modulation tracking signal transmission module is in signal connection to the main control U1; the metal tracking receiver comprises a main control U2, an interaction module, and a wireless frequency-modulation tracking signal receiving module; and the interaction module and the wireless frequency-modulation tracking signal receiving module are both in signal connection to the main control U2. ### Claim 4 (depends on 3) The frequency-modulation type metal tracker according to claim 3, wherein the wireless frequency-modulation tracking signal transmission module comprises a signal amplifier submodule, a power regulation submodule, and a first magnetic rod antenna submodule; a signal input end of the signal amplifier submodule is connected to a pin PWM0 and a pin PWM1 of the main control U1, respectively; a signal input end of the power regulation submodule is connected to a pin S0 and a pin S1 of the main control U1; the power regulation submodule, the signal amplifier submodule, and the first magnetic rod antenna submodule are in signal connection to each other in sequence; the wireless frequency-modulation tracking signal receiving module comprises a signal demodulation submodule and a second magnetic rod antenna submodule; the second magnetic rod antenna submodule is in signal connection to the signal demodulation submodule; and a signal output end of the signal demodulation submodule is connected to a pin PWM0 and a pin PWM1 of the main control U2. ### Claim 5 (depends on 3) The frequency-modulation type metal tracker according to claim 3, wherein the interaction module of the metal tracking receiver is at least one of a button module, an indicator lamp module, or a buzzer module. ### Claim 6 (depends on 3) The frequency-modulation type metal tracker according to claim 3, wherein the metal tracking receiver further comprises an NCV induction module, and the NCV induction module is in signal connection to the main control U2. ### Claim 7 (depends on 1) The frequency-modulation type metal tracker according to claim 1, wherein the NCV induction module comprises an induction sheet and a semiconductor device Q2; the induction sheet is connected to a control pole of the semiconductor device Q2; one pole of the semiconductor device Q2 is connected to a universal input/output pin of the main control U2; and the other pole of the semiconductor device Q2 is grounded. ### Claim 8 (depends on 7) The frequency-modulation type metal tracker according to claim 7, wherein the metal tracking transmitter further comprises a first Bluetooth module, and the first Bluetooth module is connected to a pin TX and a pin RX of the main control U1, respectively; the metal tracking receiver further comprises a second Bluetooth module; and the second Bluetooth module is connected to a pin TX and a pin RX of the main control U2, respectively. ### Claim 9 (depends on 8) The frequency-modulation type metal tracker according to claim 8, wherein the metal tracking transmitter further comprises at least one of a button module, an indicator lamp module, or a buzzer module which is in signal connection to the main control U1.