Analog Signal Loop/Switch Control?

[jb1]

Analog Signal Loop/Switch Control?

Hello fine people of this board. I have been working on a custom project here for a year or two and I'm stumped at this point. I am working with 16 analog sensor/signal loops (16 ins and 16 outs). There would be 2 main signal inputs, and 2 signal outputs also...

I need to be able to combine any of the 16 loops (say loop 2 and 6 only, or 4 and 5 only) in any configuration, before or after each other (say loop 6 then into 2, or loop 2 then into 6). Also, I need to be able to designate a channel to each loop (say loop 2 to 6 then out on chan1, and also loop 4 to 7 then out on chan2). Noise is an issue as well, it will be used for a custom monitoring/radio data system. I have been looking into FPGA chips as well as PIC chips but not really sure if I need all that. Does anyone here have any thoughts?

I would really like to have this done with discreet components but it seems a bit much for that. I have been able to build a device like this using relays. But, could never come up with a way to move the placement of the loops in the chain. USB or Comm port control would be an added bonus. Thanks to anyone with any ideas! Sorry if I left something out or am going about this the wrong way. I'm completely self educated when it comes to EE and design...

 

[dlgoff]

Welcome to Physics Forums jb1.

I'm not sure I understand what you want to do. Are you maybe wanting to multiplex or switch in different sensors at different times? You might want to use http://www.datasheetcatalog.com/datasheets_pdf/C/D/4/0/CD4016.shtml"

 

[oswaler]

I can see that you have a complex and challenging project on your hands. It sounds like you are looking for a way to control and manipulate multiple analog signal loops, with the ability to combine and switch between them in various configurations. You also mention the need for noise reduction and the possibility of using FPGA or PIC chips for this project.

Firstly, I would recommend looking into digital signal processing (DSP) techniques, as they can provide a more efficient and flexible solution for manipulating analog signals. DSP chips are specifically designed for this purpose and can handle multiple inputs and outputs, as well as noise reduction. They also have the ability to be programmed and controlled through USB or Comm port, which would fulfill your added bonus requirement.

Another option to consider is using a microcontroller with ADC (analog-to-digital converter) and DAC (digital-to-analog converter) capabilities. This would allow you to convert your analog signals into digital data, manipulate them, and then convert them back to analog signals. With the right programming, you can achieve the desired combinations and configurations of your signal loops.

In terms of noise reduction, you may want to look into using filters or amplifiers specifically designed for this purpose. Additionally, proper grounding and shielding techniques can also help reduce noise in your system.

In summary, I would recommend exploring DSP chips and microcontrollers with ADC and DAC capabilities for your project. These technologies will provide the flexibility and control you need for your analog signal loop/switch control system. Good luck with your project!