Use thermometer design principle and software system

The design of the system software: system adopts top-down modular design. Software design adopt VisualC++ 6. 0 development tool, the tool can quickly realize the visual programming, and have strong ability of the underlying hardware operation. Software running on Windows XP environment, realize the function mainly includes the liquid level position automatic control, tracking and measuring, data processing, and generate the test results, etc. XWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

xWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

specific characteristics embodied in the following 2 points: xWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

( 1) By using the principle of light reflection, adopts the variable threshold setting, in the quartz glass tube liquid level through the imaging cameras, seek out the best in a shadow map. In this map, the light intensity of different projection has the points of light and shade, also by the bandwidth of the light and shadow is different, can be judged by the liquid surface, and then through the software control of circulating pump and electromagnetic valve switch, realize the rise and fall of the liquid level. XWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

xWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

( 2) Concave place due to the liquid surface is not a clear dividing line, but a magnetic flap thermometer have certain bandwidth interface, so that it can't guarantee every measurement on the boundary between the same points, thermometer on the basis of different position of measurement point will be uncertain impact on the level of precision measurement. Through the software of image processing, to find a relatively fixed point in the graph, this as each time measuring liquid level datum, and at the same time, the simulation of the scribed line method, simulated groove with this tangent, considered with the edge of concave surface tangent, namely when fixed analog video carved line and the edge of glass tube in the liquid surface plane tangent, software acquisition and record data of grating displacement sensor. XWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

xWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

the used the relative measurement method, ensure the consistency of each measure, reduced due to the interface is not obvious impact of uncertainty, greatly improve the measurement accuracy. The above two questions is this project in the field of automatic control and accurate measurement of two key problems, solve these two problems, make this device fully realized the automatic control and accurate measurement, in the true sense in domestic at present did not see the same solution. XWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

xWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

xWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

recommended reading: magnetic flap thermometer xWF magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer