| 摘要 |
The sensor unit (1) has a detection module (12) i.e. analog-digital converter, for detecting a measured quantity i.e. current, and a modulation module (16) for modulating frequency pulse width. A potential-free transmission module (17) has an optical and/or magnetic transmission path, an opto-coupler and/or a fiber optic cable. The modulation module exhibits coding of 8 bits of measuring signals in pulse width and in frequency, respectively. The detection module detects voltage proportional to current detected at a shunt (21) and includes a programmable amplifier to achieve high resolution. An independent claim is also included for a method for transmitting signal and/or data. |
