Patent ID: 6701222
Filing Date: 2004-03-02
Classification: G05D

Abstract:
A thermo-electric assembly, comprising:a chamber; a thermo-electric device in thermal communication with the chamber; a first temperature sensor in thermal communication with the chamber; a second temperature sensor in thermal communication with an ambient environment; a controller responsive to the first and second temperature sensors and controlling the thermo-electric device, wherein the controller varies a temperature set point for the chamber as a function of a temperature of the ambient environment wherein the controller includes computer-readable code which, when executed by the controller, causes the controller to: calculate a temperature set point for the chamber, wherein the temperature set point for the chamber is: TCHAMBER=(K*TNominalâˆ’C*TAMBIENT)/(Kâˆ’C), wherein TCHAMBER is the set point temperature of the chamber, TNOMINAL is the desired temperature of a device to be thermo-stabilized, TAMBIENT is the ambient temperature, C is the temperature resolution for the chamber, and K is a coefficient indicative of the characteristics of the chamber; and control the thermo-electric device to approach the temperature set point for the chamber.