A modern computer, possessing many useful properties, is a universal device for storing and processing various kinds of information. In addition to everyday use, a computer can be easily converted into a real scientific and measuring complex that allows you to study various physical processes. The computer's ability to program distinguishes such a virtual complex favorably from any conventional measuring device.
Necessary
- - Personal Computer;
- - analog-to-digital converter;
- - software;
- - measuring sensors.
Instructions
Step 1
Install the main elements of the future measuring complex: IBM-compatible computer, including a processor, monitor and input-output devices (keyboard, mouse, scanner, printer, modem, and so on).
Step 2
Consider the presence of an analog-to-digital converter (ADC) in the system. The fact is that the measurement of most physical parameters (pressure, temperature, etc.) presupposes the estimation of analogue initial values, while the computer processes discrete data. Connect the converter through the serial or parallel port of the computer. If the ADC is designed as an expansion board, it can be connected directly via the bus.
Step 3
Prepare the software based on the intended area of application of the measuring complex. Use licensed professional programs for parameter control and data processing, since the accuracy of the measured characteristics of the research object will directly depend on the quality of the software.
Step 4
In addition to the usual data collection programs, use applications in the form of systems for displaying graphical information and building diagrams, as well as spreadsheets when designing a measuring complex.
Step 5
Select and connect to the system through an analog-to-digital converter the sensors that you will use to take primary data from the object of observation or research. Depending on the directionality of the measurements, these can be sensors of pressure, temperature, humidity, electrical voltage, and so on. Determine the number of such devices and their type based on the objectives of the study.
Step 6
Before using your virtual measuring complex, debug and adjust it, guided by the technical documentation for the sensors and the permissible levels of measurement error. Check and calibrate the measuring part of the system as often as required by the operating conditions of conventional measuring instruments of this type.
