Control channel
Input channels: a channel into the computer
output channels: channel out of the computer
- Sensor (English name: transducer / sensor) is a detecting means, the information to be measured can feel, and can feel the information according to certain rules converted into electrical or other forms of information output required to meet the information transmission, processing, storage, display, recording and control requirements.
- Signal conditioning circuitry (signal conditioning circuit) means for converting the analog data acquisition, process control, a display circuit performs the calculation of the digital signal read out or other purposes.
- Acquisition circuit into the circuit before the A / D. Now the A / D conversion and include acquisition
- Sensing, conditioning, acquisition, conversion of four parts of the digital sensor .
- Maximize the use of the module .
Input Channel Type
1. concentrated sampling
Multiple analog inputs
multiplexing a common channel A / D
SH signal sample and hold (Sample Hold)
sensor type
TTl and CMOS
1, large signal output of the sensor
2, the digital output of the sensor
Optical isolation: a good role in isolation of input, output electrical signal.
3, the integrated sensor
4, the optical fiber sensor
Conditioning circuit
Qualcomm: the low frequency filtered
Notch: filter out AC interference is filtered off frequency, not the frequency band of a
low-pass: measuring channel usually has, filtering defrobulated
Preamplifier
Output channels
