For this piece of coursework i've been asked to purely design a 'monitoring and measuring system' for the speed of a drive motor. This system would need an item to display the speed and then a method of warning when the speed exceeds a set level. I will not be making this, all i need to do is to understand what is needed etc to a reasonable level.
I'm not exactly an electronics whizz, but i did have a few ideas as to what needed to be included. However there are gaps in areas i am not 100% sure about, so if i've missed anything please tell me!
The main idea I had reveloved around a 'tachogenerator', where you attach a generator to the shaft, this rotates and gives a voltage out, you do this at a number of speeds and produce a set of calibration data which can be used to compare voltage to shaft speed.
This generator would then be in line with a A/D converter that converts this analogue signal (voltage) into a digital value. - I'm not 100% sure how this exactly fits in to the circuit?
There could then be a pre-programmed pic chip that can take this digital value and output it as a number on an 8 bit display or something similar, and when the value is higher than a set level this could then set off an LED warning display and a simple 'warning' on a display screen or something along those lines. - I uncerstand that the pic chip can be programmed using 'circuit wizard,' which uses a flow chart like format, but i'm not sure exactly what i would need to put in to make this work
I think that is all i should need, but like i've said above i'm not great by any extent with electronics etc so i would very much appreciate if when i've missed something could someone please point it out, or even if its giving me some more details on a particular part that i'm unsure of or have got wrong in my own understanding. Also if someone could tidy this up into a more neat example of what i mean i would really much appreciate it.
Or alternatively if you have your own idea for a system that would work i would be very interested to hear it!
Thanks guys,
Alex~
I'm not exactly an electronics whizz, but i did have a few ideas as to what needed to be included. However there are gaps in areas i am not 100% sure about, so if i've missed anything please tell me!
The main idea I had reveloved around a 'tachogenerator', where you attach a generator to the shaft, this rotates and gives a voltage out, you do this at a number of speeds and produce a set of calibration data which can be used to compare voltage to shaft speed.
This generator would then be in line with a A/D converter that converts this analogue signal (voltage) into a digital value. - I'm not 100% sure how this exactly fits in to the circuit?
There could then be a pre-programmed pic chip that can take this digital value and output it as a number on an 8 bit display or something similar, and when the value is higher than a set level this could then set off an LED warning display and a simple 'warning' on a display screen or something along those lines. - I uncerstand that the pic chip can be programmed using 'circuit wizard,' which uses a flow chart like format, but i'm not sure exactly what i would need to put in to make this work
I think that is all i should need, but like i've said above i'm not great by any extent with electronics etc so i would very much appreciate if when i've missed something could someone please point it out, or even if its giving me some more details on a particular part that i'm unsure of or have got wrong in my own understanding. Also if someone could tidy this up into a more neat example of what i mean i would really much appreciate it.
Or alternatively if you have your own idea for a system that would work i would be very interested to hear it!
Thanks guys,
Alex~
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