CT Slip Ring Applied In Industrial Field
At present, the CT machine has been developed to multi-row spiral scanning stage, and the technique of slip ring ring must be adopted, Slip ring plays an important role in CT, transfer control instruction and data collected by scan, supplies power to the rotating part of the scanning, have influence on CT performance.
In the field of industrial technology, there are many applications where the data on the rotating body needs to be transmitted to the fixed body, typical applications such as in industrial CT systems, Safety equipment and medical CT system. In order to detect objects, the information that is detected on the rotating body is transmitted to the fixed body at high speed and with high reliability in real time. The initial data transmission system is achieved by means of brushes and conductive rings, But because of the constant change in the electrical resistance between the electric brush and the conducting ring during the rotation, the change creates a large signal noise. This reduces the reliability of the data transfer and therefore cannot be used to transmit high-speed data signals. Especially in high-pressure environments, the high-pressure discharge between a rotating body and a fixed body causes high pressure noise.
In addition, The contact friction between the carbon brush and the CT is also affecting the service life of the data transmission system. with multiple rows of X-ray detector high-speed industrial CT system and medical CT system is widely used in the actual detection, The system in the unit time to collect the test data greatly increased, The use of carbon brush and CT slip ring contact way to achieve data transmission is more and more unreliable and not ideal. Therefore, The industry has proposed a wireless capacitance coupling to replace the carbon brush, But wireless capacitively coupled electromagnetic field more vulnerable to external voltage, current and electromagnetic interference, so the accuracy of the high-speed data transmission and transmission rate is limited and affected.
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