| 摘要 |
The invention relates to an analogue signal input circuit comprising a first number of analogue signal detection conduits (100) and at least one diagnostics circuit (130), each analogue signal detection conduit accommodating a respective third number of analogue signal detection circuits (110, 120) and at least one first connection selection device (115, 125), and each analogue signal detection circuit accommodating a first connection device and a second connection device. For each analogue signal detection conduit, in order to detect analogue input signals that are present at analogue signal inputs of a second number of analogue signal inputs and in order to generate output signals in response to the detected analogue input signals, a respective analogue signal detection circuit is selected alternately for a given time period not to be connected by the first connection device thereof to an analogue signal input for detecting an analogue input signal, but instead to be used for testing and/or diagnostics purposes, and all of the accommodated analogue signal detection circuits, except for the aforementioned circuit, are selected to be connected by their first connection devices to determined analogue signal inputs for said time period in order to detect analogue input signals, and to generate the output signals of the analogue signal detection conduit as output signals in response to detected analogue input signals at their second connection devices. |
