| 摘要 |
The invention relates to an analog signal input circuit with a first number of analog signal detection channels (100) and at least one diagnostics circuit (130), with each analog signal detection channel respectively including a third number of analog signal detection circuits (110, 120) and at least one first connection selection device (115, 125), and each analog signal detection circuit comprising a first connection device and a second connection device. For each analog signal detection channel, for detecting analog input signal applied at analog signal inputs from a second number of analog signal inputs, and for the respective issuance of output signals for the detected analog input signals, respectively one analog signal detection circuit is alternatingly selected for a certain period of time, not connected to its first connection device comprising an analog signal input for detecting an analog input signal, but used for testing and/or diagnostic purposes, and all except for this one included analog signal detection circuits being selected for this certain period of time, by which first connection device can be connected to certain analog signal inputs for detecting analog input signals, and according to the analog input signals detected, the output signals of the analog signal detection channel being issued at their second connection devices as output signals. |
| 主权项 |
1. An analog signal input circuit with a first number of analog signal detection channels (100; 100′) and at least one diagnostics circuit (130; 130′), with
each analog signal detection channel (100; 100′) being embodied to detect an analog input signal applied at an analog signal input from a second number of analog signal inputs (201, 202; 201′, 202′) and, responding to a detected analog input signal, issuing an output signal; each analog signal detection channel (100; 100′) respectively including two analog signal detection circuits (110, 120; 110′, 120′) and at least one first connection selection device (115, 125); each analog signal detection circuit (110, 120; 110′, 120′) comprising a first connection device (111, 121) and a second connecting device (112, 122); each of the analog signal detection circuits (110, 120; 110′, 120′) of an analog signal detection channel (100; 100′) being able to connect to its first connection device (111, 121) with the same analog signal input of the second number of analog signal inputs (201, 202; 201′, 202′) for detecting an analog input signal, at least successively, and both analog signal detection circuits (110, 120; 110′, 120′) of an analog signal detection channel (100; 100′) being embodied such that, responding to detected analog input signals matching their second connection devices (112, 122) issuing matching output signals; each analog signal detection channel (100; 100′) for the detection of the analog input signal applied at one analog signal input from the second number of analog signal inputs and for the responding output of the output signal for the detected analog input signal respectively one of the two included analog signal detection circuits is selected alternatingly for a certain period of time, not connected to its first connection device with this analog signal input for detecting this analog input signal, but used for test and/or diagnostic purposes, and the respectively other two included analog signal detection circuits (110, 120; 110′, 120′) are selected for this certain period of time to be connected to their first connection device with this analog signal input for detecting this analog input signal and responding to the detected analog input signal issuing the output signal of the analog signal detection channel at this second connection device as the output signal, with the first connection selection device (115, 125) being embodied for the purpose of connecting the respectively first connection device (111, 121) of the two included analog signal detection circuits (110, 120; 110′, 120′) in response to the selection of at least one of the analog signal inputs to be connected or to the diagnostics circuit. |
