Method and device of wirelessly outputting thermoelectric force signal for multi-point temperature measuring of rotator

Abstract

The invention discloses a method and a device of wirelessly outputting thermoelectric force signals for multi-point temperature measuring of a rotator. The device comprises K type thermocouples, a thermoelectric force signal acquisition and emission module, a wireless reception module and a PC, wherein the wireless reception module is connected with the PC via a wire; a plurality of K type thermocouples are respectively arranged on a rotator, the temperature of which is to be measured; the K type thermocouples are connected with multipath electronic switches via wires; the thermoelectric force signal acquisition and emission module is fixed in the center of the rotator tail or sleeved on the rotator, so that the center of gravity of the thermoelectric force signal acquisition and emission module is concentric with a rotation axis of the rotator. The PC of the invention arranges serially acquired signals into thermoelectric force signal sequence of different paths at different time points according to the number of paths, and realizes real time acquisition, output and display of multi-point temperature of the rotator, well solving the leading out problem of multiple singles under rotation state and avoiding the generation of additional thermoelectric force.

Description

technical field [0001] The invention relates to a temperature measurement of a machined component, in particular to a multi-point temperature measuring device and method of a rotating body for wireless transmission of thermoelectric potential signals, which are used for measuring the temperature of the rotating body. Background technique [0002] In the operation of mechanical equipment, many parts are rotating bodies, and in some cases it is necessary to measure the temperature of several points of these rotating bodies. For example, in the study of mechanical cutting mechanism, it is necessary to measure the temperature of turning rotating workpiece or milling rotating tool. At present, only the natural thermocouple composed of tool-workpiece uses current collectors, thimbles, and brushes to lead out one end of the signal, and the other end is on a non-rotating body. These methods are based on electrical conductors that lead the thermoelectric potential signal of the rotat...

AI Technical Summary

Problems solved by technology

The disadvantages of these methods are: (1) a thermoelectric potential signal will be collected at both ends of a standard thermocouple, and a set of signal lead-out devices are required for each output of a thermoelectric potential signal. If the temperature of n points is measured simultaneously with a thermocouple, it will be necessary The structure of 2n sets of devices is bound to be very complicated; (2) In the rotating state, the friction between the dynamic and static body of the signal transmission conductor will generate additional thermoelectric potential, that is, the output fidelity of the thermoelectric signal is difficult, which affects the measurement accuracy

At present, only the natural thermocouple composed of the tool and the workpiece leads to the signal at one end of the mercury current collector, thimble, and brush, and the other end is on the non-rotating body. No one has yet studied the problem of deriving the signal of the standard thermocouple of the rotating body. , since both ends are on the rotating body, and the ends must be insulated from each other

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