Circuit for transmitting a RFID signal

• US 7,831,212 B1
• Filed: 05/18/2010
• Issued: 11/09/2010
• Est. Priority Date: 05/18/2010
• Status: Active Grant

• Current Assignee: Callaway Golf Company
• Original Assignee: Callaway Golf Company
• Inventors: Denton, Scott, Balardeta, Joseph
• Primary Examiner(s): West; Lewis G
• Application Number:
  US12/782,516
• Time in Patent Office: 175 Days
• Field of Search: 455/73, 455/66.1, 455/41.2, 455/41.3, 340/669
• US Class Current: 455/73
• CPC Class Codes: G01D 21/00 Measuring or testing not otherwise provided for
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof

Abstract

A circuit for transmitting a RFID signal while conserving the battery power for a circuit in continuous operation is disclosed herein. The circuit includes a RFID component, a microprocessor, an accelerometer and a battery. The battery preferably has no more than 225 milliamp hours of power. The accelerometer is preferably a multiple axis accelerometer. The circuit is preferably utilized with a device for shot tracking.

Claims

1. A circuit for transmitting a RFID signal while conserving the battery power for the circuit, the circuit comprising:

a battery having no more than 225 milliamp hours of power

a microprocessor in electrical communication with the battery, the microprocessor operating during a sleep mode, a sampling mode, an analysis mode, a monitoring mode and a transmission mode;

a multi-axis accelerometer for determining movement, monitoring movement and communicating the movement to the microprocessor, the multi-axis accelerometer in electrical communication with the microprocessor, the power for the multi-axis accelerometer drawn from the battery, the multi-axis accelerometer only active during the sampling mode, the analysis mode and the monitoring mode;

a radiofrequency component in electrical communication with the microprocessor, the radiofrequency component operating at 2.4 giga-Hertz, the power for the radiofrequency component drawn from the battery, the radiofrequency component only operable during a transmission mode, transmitting a signal from the radiofrequency component during the transmission mode, the signal comprising data related to the movement monitored by the multi-axis accelerometer;

wherein the circuit is in continuous operation;

wherein the circuit consumes less than 600 nano-amps during the sleep mode, the sleep mode having a time period ranging from 10 seconds to 30 seconds;

wherein the circuit consumes less than 15 micro-amps during the sampling mode;

wherein the circuit consumes less than 50 micro-amps during the analysis mode;

wherein the circuit consumes less than 200 micro-amps during the monitoring mode; and

wherein the circuit consumes less than 12 milli-amps during the transmission mode.