Device and method for simulating temperature variation of Pt100 thermal resistor

Abstract

The invention discloses a device and a method for simulating the temperature variation of a Pt100 thermal resistor, which relates to the field of semiconductors and aims to solve the problem of troublesome operation by manually realizing the resistance adjustment and control of the Pt100 thermal resistor to further simulate the temperature variation of the Pt100 thermal resistor in the prior art. The technical scheme provided by the invention is that the device comprises a communication interface circuit, a logic control circuit and a simulating-bus output circuit, wherein the simulating-bus output circuit comprises a plurality of relays, a resistance-outputting port and an adjustable resistor, the two contacts of each relay are connected with two ends with corresponding resistance values on the adjustable resistor, and the communication interface circuit is used for controlling the on-off of the relays through the logic control circuit, so that the corresponding resistance value of the closed relay is output. The device and the method for simulating the temperature variation of the Pt100 thermal resistor provided by the embodiment of the invention can be applied to the delivery testing and inspecting processes of cabinet bodies based on control equipment, such as PLCs (Programmable Logic Controller), DCSs (Distributed Control System) and the like.

Description

technical field [0001] The invention relates to the field of semiconductors, in particular to a Pt100 thermal resistance temperature change simulation device and method. Background technique [0002] For cabinets based on PLC (Programmable Logic Controller, Programmable Logic Controller), DCS (Distributed Control System, Distributed Control System) and other control equipment, during the factory test and inspection process, it is not only necessary to verify whether the wiring and installation of the product are correct, but also to Verify whether the factory programs burned by PLC, DCS and other controllers in the control cabinet are correct. Therefore, it is necessary to provide external sensor signals for the control cabinet, and read the provided sensor signals through the PLC and DCS programs in the controller, so as to judge whether the wiring of the product and the programmed program are correct. [0003] The current common practice is to directly connect the sensor...

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a Pt100 thermal resistance temperature change simulation device and method to solve the problem of controlling the resistance of Pt100 thermal resistance in the prior art. Then simulate the temperature change of Pt100 thermal resistance, and the problem of troublesome operation

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