Wireless temperature measuring system and temperature measuring method for cold rolling mill temperature measurement

Abstract

The invention provides a wireless temperature measuring system and temperature measuring method for cold rolling mill temperature measurement. The wireless temperature measurement system comprises a temperature measurement element, a communication instrument, a protocol conversion element and a PLC control element; the communication instrument receives a temperature signal sent by the temperature measurement element; the communication instrument transmits the temperature signal to the protocol conversion element; the PLC control element reads data of the protocol conversion element; the temperature measurement element comprises a wireless temperature sensor, a WiFi signal generator, an adapter and an aviation plug; the wireless temperature sensor and the WiFi signal generator are separately arranged; and the wireless temperature sensor is installed on a roller and synchronously moves with a roller bearing pedestal. According to the wireless temperature measuring system and temperature measuring method for cold rolling mill temperature measurement, the wireless temperature measuring element is modified, and the wireless temperature sensor and the WiFi signal generator which are originally integrated on the wireless temperature measuring element are separated, so that the wireless temperature sensor is easy to install in an accurate temperature detection position radius, the sensor is fixed through the adapter and the sensor is protected from pollution by cooling oil, and the accuracy of the obtained temperature is improved.

Description

technical field [0001] The invention relates to the field of wireless temperature measurement, in particular to a wireless temperature measurement system and a temperature measurement method for temperature measurement of a cold rolling mill. Background technique [0002] The existing domestic aluminum strip cold rolling mill roll bearing temperature measurement usually adopts the wired platinum resistance temperature measurement technology. The temperature measurement platinum resistance is installed on the bearings at both ends of the roll, and connected to the PLC analog channel through the cable, and the PLC obtains after data processing. Roll bearing temperature, and set the highest temperature, when the temperature is too high, it will directly alarm and stop, for the production personnel to check and deal with. [0003] However, it is very inconvenient to install the wired temperature measurement after the roll is pushed into the rolling mill stand. Due to the limited...

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Problems solved by technology

[0003] However, it is very inconvenient to install the wired temperature measurement after the roll is pushed into the rolling mill stand. Due to the limited space and location, the installer will have a safety hazard of falling

A fire in a rolling mill would damage the cable, and it would take a lot of time and money to replace the cable each time

In addition, due to the need for personnel to enter the rack to operate and place the sensor, the sensor cannot be placed in the best position. If the sensor cannot penetrate into the outer wall of the bearing to measure, the actual temperature will be higher than the measured temperature. If the bearing is heated and locked, it will cause fire and damage Major safety hazards of equipment

[0004] With the rise of wireless temperature measurement equipment, there have been many cases in other fields where wireless temperature measurement has been used to replace limited temperature measurement to solve the problem of safety hazards caused by wired devices; however, for cold rolling mills that use PLC monitoring , there are three main problems that limit the application of wireless temperature measurement equipment: First, for rolling mills, the replacement frequency of their daily operations is relatively high, and in order to improve the accuracy of temperature detection, the location of temperature measurement equipment is often placed Extremely demanding, the use of traditional wireless temperature measurement equipment still cannot solve the extremely troublesome problem of temperature measurement equipment replacement; second, the existing wireless temperature measurement equipment cannot be directly connected to the equipment controller, because the PLC monitoring equipment of the rolling mill uses the general Profinet communication mode, the existing communication instruments do not have the Profinet communication protocol, but use the traditional ModBus communication protocol for data transmission, so the PLC cannot read the data signal from the front end

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