Multi-channel sensor signal modulation chip calibration system

The utility model provides a multipath sensor signal modulation chip calibration system, which relates to the technical field of signal conditioning, and comprises a high and low temperature box, an upper computer and a lower computer, the high and low temperature box is internally provided with a sensor signal modulation chip; the upper computer is in communication connection with the high and low temperature box through a USB-to-RS232 serial port line; the lower computer is provided with a system power supply module, a control chip module, an interface management switching module, a sensor signal modulation chip interface module, an integrated connection port module and an external storage equipment module, and is in communication connection with the upper computer through a USB-to-RS485 serial port line; a sensor signal modulation chip interface module of the lower computer is connected with a signal modulation chip of a sensor on the high and low temperature box through a wire harness, the upper computer