Variable-temperature strain sensor calibration device and method

The invention discloses a variable-temperature strain sensor calibration device and method, and belongs to the field of testing and metering; the device comprises a stand column, a constant-strength cantilever beam, a fiber bragg grating strain sensor, a fastener, an excitation motor, a blackbody furnace, a deflection compensation block, a fiber bragg grating demodulation system, a computer and a precision deflectometer; wherein the left end of the blackbody furnace is fixedly connected with the stand column, the bottom of the right end of the equal-strength cantilever beam is connected with the excitation motor through a fastener, the left end of the equal-strength cantilever beam penetrates through the blackbody furnace to be connected with the stand column, and the fiber bragg grating strain sensor is pasted and fixed to the upper surface of the equal-strength cantilever beam. The deflection compensation block is arranged above the right end of the equal-strength cantilever beam, the fiber bragg grating de