The invention discloses a synchronous calibration device and method for strain and a temperature of a distributed sensor
fiber (cable). The synchronous calibration method comprises the following stepsof uniformly winding fibers (cables) to be calibrated around an outer wall of a calibration
barrel during calibrating a strain coefficient, gradually adding weights, calculating
hoop strain of the calibration
barrel under different loads according to
elastic modulus of the calibration
barrel and poisson ratio, reading spectrum information under each level of load by a
fiber data demodulator, building a relation between the
hoop strain and the spectrum information, and calibrating the strain coefficient; achieving control on a temperature of the calibration barrel by a
temperature control boxduring calibrating a
temperature coefficient, acquiring the spectrum information under different temperatures by the demodulator, and calibrating the
temperature coefficient. By the synchronous calibration method, the strain coefficient and the
temperature coefficient can be independently or synchronous calibrated, the strain generated by an external force effect and the influence of environmentaltemperature change on the spectrum information can be simultaneously determined, the
cross effect between the strain and the influence is analyzed, and a calibration effect has high accuracy and is more confirm to an actual application condition.