Detection device and calibration method for scanning and imaging pre-signal conditioning module by electrical impedance

The invention discloses a detection device and calibration method for scanning and imaging pre-signal conditioning module by electrical impedance. The detection device comprises a sweep frequency voltage source module, a high-precision resistance network calibration unit, a collecting and conveying unit, a centre control unit and a computer. The sweep frequency voltage source module is respectively connected with the high-precision resistance network calibration unit and the centre control unit; and the collecting and conveying unit is respectively connected with the centre control unit and the computer. Under the control of programs, the sweep frequency voltage source transmits the voltage signals to the high-precision resistance network, then a module to be detected is arranged between the resistance network calibration unit and the collecting and conveying unit, and the computer receives and collects the signals and processes the data. Based on the pre-set calibration process and algorithm, the computer software estimates the signal transmission accuracy and the signal transmission stability of the module to be detected, and the phase transmission property of the impedance amplitude, finally obtains the estimation result and the calibration parameters.