As part of a project I'm working on. We need to detect objects coming within range, but also be able to establish whether the object is getting closer, static or moving away. Now i've found http://www.topqualitytools.co.uk/sensor-proximity-apds-9700-020/?gclid=CNmU2ZufickCFQ2NGwodovwPgw this from Avago Technology, which I think would work. It covers a maximum of 200mm range, which is ample for what we are doing (our minimum was 160mm range), and Im assuming the maths surrounding getting closer/moving away would be easily handled with programming.
But my question is, do detectors like these work in a binary state (i.e. yes, something detected or no, nothing detected) or do they provide some data through the digital connection as to how near/far the object is? Does anyone have any experience with these types or sensors, or can anyone suggest another/better alternative?
But my question is, do detectors like these work in a binary state (i.e. yes, something detected or no, nothing detected) or do they provide some data through the digital connection as to how near/far the object is? Does anyone have any experience with these types or sensors, or can anyone suggest another/better alternative?