Data recorder works - Solutions - Huaqiang Electronic Network

Photocoupler

The data logger and the sensor work together to convert the physical quantity and excitation signal to be measured into electrical signals such as voltage and current. These electrical signals are then converted or digitized into binary data. Binary data is very easy to analyze and store on a PC's hard drive or other storage media, such as memory cards and CDs.

Some components that must be included with each data logger:

Hardware devices used to digitize recorded signals, including sensors, signal conditioning devices, and analog-to-digital conversion hardware.

Long-term data storage device, generally PC

Data logging software for data collection, analysis and presentation

A recorder is an instrument that converts a process in which one or more variables change over time or another variable into a identifiable and readable signal. It preserves the recorded signal changes for analysis processing. The biggest feature of the recorder is the ability to automatically record slow and transient changes in periodic or non-periodic multiplexed signals.

Depending on the type of input and output signals, the recorder can be divided into analog-digital, digital-to-analog, analog-to-analog, digital-to-number, etc., and their main circuits differ according to the output form. When the output is a digital signal, the main circuit is a memory circuit capable of storing digital information, which can send digital signals to a tape drive, a puncher or other device at any time, or an analog oscilloscope to observe analog waveforms, such as digital memories and Waveform memory. When the output is an analog signal, the main circuit of the recorder is an analog amplifying driving circuit without a storage function, and the signal must be immediately recorded on paper, photographic film or magnetic tape by an appropriate recording device and method to save the information for further analysis and processing. Such as a variety of transcripts, light recorders, plotters, tape recorders, and so on. There are two main types of analog circuits, namely direct amplification type, such as phonograph and auto balance type, such as plotter or XY recorder.

The main technical indicators of the recorder are working frequency, input signal dynamic range, recording linearity, resolution, distortion, response time, paper accuracy and stability. There are also complex circuits and mechanisms that are required for tape drives used as computer peripherals.