| 摘要 |
Abstract A configurable handheld metal detector for producing an output signal indicative of a target, including: transmit electronics for generating a repeating transmit signal cycle; a magnetic field transmitter 5 connected to the transmit electronics for receiving the repeating transmit signal cycle to generate a transmit magnetic field; a device for receiving one or more parameters from a source external to the metal detector; a magnetic field receiver; a demodulator for synchronously demodulating a receive signal from the magnetic field receiver using a configurable demodulation function, wherein the configurable demodulation function includes at least three demodulation windows, and at least one characteristic of at 0 least one of the at least three demodulation windows is defined by a variable that is configurable based on the one or more parameters; and a digital storage medium for storing the configurable demodulation function, the digital storage medium is adapted to retain a value of the variable when the metal detector is switched off. |
