Compact wireless embedded signal processor applied to cold-rolled strip shape meter

Abstract

The invention discloses a compact wireless embedded signal processor applied to a cold-rolled strip shape meter. The processor comprises a rotary head and an outer cover. An excitation power supply board, an analog acquisition board, a digital processing board and a wireless transmission board are arranged in the rotary head. An electrical connector is arranged on one end of the rotary head. The other side is in sleeve joint with an inner magnet ring. The rotary head is nested in the outer cover. A wireless receiving board, a voltage regulator circuit board and an outer magnet ring are arranged in the inner wall of the outer cover. A junction box is arranged on the outer wall of the outer cover. A communication cable and a high-frequency power supply cable are led out from the junction box. The high-frequency power supply cable is connected with the voltage regulator circuit board and the outer magnet ring through the junction box. The voltage regulator circuit board powers the wireless receiving board. The outer magnet ring powers the inner magnet ring. The inner magnet ring is connected with the excitation power supply board and powers the excitation power supply board. An excitation signal is transferred to a detection roller through the electrical connector to provide an incentive signal for the sensor. Power supply voltage of different amplitudes powers the boards on the rotary head. The compact wireless embedded signal processor provided by the invention has the advantages of simple maintenance, high reliability, strong anti-interference, long service life and the like.

Description

technical field [0001] The invention relates to the field of automatic detection and control, in particular to a data processing and wireless transmission device for shape detection signals in the rolling process of cold-rolled steel strips, aluminum strips, copper strips and other cold-rolled strips. Background technique [0002] On-line detection of cold-rolled strip shape is a high-end detection technology in the rolling process, a prerequisite for realizing closed-loop control of shape, and a key technology for producing high-quality strips. In the shape detection system, the original shape signal acquisition communication and data processing are two important components. There are the following problems in the online detection of cold-rolled strip shape in the prior art: (1) The traditional shape signal processing method is to first output the analog signal generated by the sensor on the detection roll to the outside of the detection roll through the carbon brush slip r...

AI Technical Summary

Problems solved by technology

There are the following problems in the online detection of cold-rolled strip shape in the prior art: (1) The traditional shape signal processing method is to first output the analog signal generated by the sensor on the detection roll to the outside of the detection roll through the carbon brush slip ring device, Signal shape processing

The signal output adopts the analog signal output mode. When the analog signal is transmitted remotely on the industrial site, it will inevitably be interfered by external factors such as electromagnetic, vibration, humidity, etc., which will affect the measurement accuracy of the strip shape.

Moreover, the signal transmission mode of the carbon brush slip ring is affected by factors such as frictional heat generation between the carbon brush and the slip ring, wear dust, and vibration. When the wear dust accumulates and cannot be cleaned in time, adjacent channels may A short circuit occurs, resulting in severe signal distortion

Therefore, this signal output device has a complicated structure, needs spray cleaning, or humid air purging, difficult maintenance, and short service life

(2) Use an external digital acquisition card for signal digital acquisition, remote signal output, poor shielding performance, cannot avoid electromagnetic, photoelectric, temperature, humidity and vibration interference on the industrial site, and the structure is complex and the volume is large

(3) The plate shape detection roller rotates at a high speed when it is working. The power supply of the sensor on the detection roller requires a high-frequency excitation signal of a specific frequency. The contact carbon brush slip ring is used for power supply, which is easily affected by the friction, wear and vibration between the carbon brush slip rings. , causing interference, poor stability and reliability

(4) The plate-shaped signal transmission device, signal processing device and contact sliding power supply device are scattered and arranged, with complex structure and difficult maintenance

However, the existing technology cannot meet the needs of the industry

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