Infinite order temperature compensation system easy to implement

Abstract

The invention discloses an infinite order temperature compensation system easy to implement. Signals output by a system which needs to be subjected to temperature compensation include a temperature simulation value Vtemp and a voltage simulation value Vout, and two signals are transmitted to a digital-to-analog converter; the digital-to-analog converter converts the simulation temperature value Vtemp and the simulation voltage value Vout into a digital temperature value Digital Vtemp and a digital voltage value Digital Vout by ADC, and outputs the digital temperature value Digital Vtemp and the digital voltage value Digital Vout to a microprocessor; a function model is selected at the microprocessor, the function models include a triangle function model and a double-exponential function model, and the digital temperature value Digital Vtemp and the digital voltage value Digital Vout are fit to obtain a function model coefficient to transmit to a storage module Rom of a digital compensated circuit; the digital compensated circuit carries out compensation on the input digital temperature value Digital Vtemp and digital voltage value Digital Vout and the function model coefficient read by the ROM by adopting a CORDIC algorithm or a lookup table method, and finally outputs a compensation signal; and the infinite order temperature compensation system easy to implement achieves the technical effects that a fitting effect of a higher order polynomial can be reached, and the infinite order temperature compensation system adopts few coefficients, and is simple to calculate and easyto implement.

Description

technical field [0001] The invention relates to the field of temperature compensation, in particular to an infinite-order and easy-to-implement temperature compensation system. Background technique [0002] At present, for temperature compensation systems, there are mainly two methods of temperature compensation, analog and digital. Simulation mainly uses techniques such as PTAT (proportional to absolute temperature) and CTAT (complementary to absolute temperature) to design readout circuits to compensate for their relationship with temperature. The numbers are mainly compensated using polynomial curve fitting, surface fitting, Kalman filter, BP neural network algorithm, etc. These two methods also have certain limitations, such as the low precision of the analog method and the need for repeated debugging, and the complex algorithm of the digital method, which is not easy to integrate. Contents of the invention [0003] The invention provides an infinite-order temperatur...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an infinite-order temperature compensation system that is easy to realize, solves the technical problems that the existing temperature compensation system needs repeated debugging, the digital method algorithm is complex, and is not easy to integrate, and realizes the fitting effect of high-order polynomials , and the coefficient is less, the calculation is simple, and the technical effect that is easy to realize with hardware language

Images