Thermocouple correcting device and method

A technology of a calibration device and a calibration method, which is applied in the direction of using electrical devices, measuring devices, and thermometers using electric/magnetic elements that are directly sensitive to heat, can solve the problems of gas energy consumption, waste, and high furnace temperature, and achieve extended use. Time and energy saving effects

CN101832824AActive Publication Date: 2010-09-15北京华宇天控科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-09-15

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Abstract

The invention discloses a thermocouple correcting device and a thermocouple correcting method. The thermocouple correcting device can comprise a data preprocessing unit, a comparison unit, a compensation unit and a control unit, wherein the data preprocessing unit respectively acquires voltage values from one or more thermocouples and converts the voltage values into original temperature values; the comparison unit compares the original temperature values with a preset temperature error model so as to determine error compensating coefficients of the original temperature values; the compensation unit associates the error compensating coefficients with the original temperature values to acquire compensation temperature values; and the control unit adjusts the temperature of application occasions of the one or more thermocouples according to the compensation temperature values. The thermocouple correcting device and the thermocouple correcting method can prolong the service time of the thermocouples, and can reasonably adjust the temperature of application occasions of the thermocouples so as to effectively save energy.
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Description

technical field

[0001] The present application relates to a thermocouple calibration device and a calibration method thereof. Background technique

[0002] Thermocouples have the advantages of large thermoelectric potential and high sensitivity, and are widely used in occasions such as firing systems to implement real-time temperature control in various applications. The principle of thermocouple temperature measurement can be simply understood as a pair of heterogeneous conductors forming a closed loop. When the junction of the conductors is placed in a different temperature field, a temperature difference electric effect will occur, and there will be a current in the loop, so the conductor The two junctions of the set generate a corresponding thermomotive force, which is called "Seebeck voltage". The temperature can be measured by measuring the "Seebeck voltage".

[0003] However, due to the temperature and humidity of the environment where the thermocouple is located, t...

Examples

Embodiment Construction

[0022] The following describes a thermocouple calibration device 100 according to an embodiment of the present application with reference to the accompanying drawings. The device can be applied, for example, to a carbon firing system for aluminum or similar occasions.

[0023] Such as figure 1 As shown, the thermocouple calibration device 100 includes a data preprocessing unit 10, and the data preprocessing unit 10 is configured to collect voltage values ​​from one or more thermocouples, such as Seebeck (Seebeck) analog voltage, and convert it into The temperature value that characterizes the raw temperature of the thermocouple.

[0024] see figure 2 , which exemplarily illustrates the structure of the data preprocessing unit 10, which may include a data acquisition unit 101, an A / D conversion unit 102, and a voltage-temperature conversion unit 103, wherein the data acquisition unit 101 may be located at One or more thermocouples at the firing site (eg, firing furnace) pick...