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This message is quite related to the message from David 'Where is all the good circuits'.
Over the last 12-month period, as a team of experienced electronic and software engineers, we have designed and implemented an ALL-digital PI detector with reliable metal discrimination capabilities.
The current status of our project is a working hardware/software prototype version 1 successfully tested in lab.
From the beginning of our project, we aimed at using well-selected, largely available, state-of-art components. They had to be easily mountable (no use of components existing only in CMS format), cheap (no graphic display) and minimalist (only hardware necessary for functions that can not be executed as or more flexibly by software).
1. Coil
- Basket-woven for minimizing internal capacitance
2. Power supply
- All the necessary precautions have been taken in the design and the implementation of this module to reduce the internal noise which is often a nuisance in such a high impedance, high gain system. All the power supplies are highly decoupled, a specific ground layer protects the OpAmp region and the high voltage, and high current components have been carefully separated from the high impedance components.
3. Front-end module
- A fast MOSFET switch able to sharply cut (200nsec) an important coil current (
Over the last 12-month period, as a team of experienced electronic and software engineers, we have designed and implemented an ALL-digital PI detector with reliable metal discrimination capabilities.
The current status of our project is a working hardware/software prototype version 1 successfully tested in lab.
From the beginning of our project, we aimed at using well-selected, largely available, state-of-art components. They had to be easily mountable (no use of components existing only in CMS format), cheap (no graphic display) and minimalist (only hardware necessary for functions that can not be executed as or more flexibly by software).
1. Coil
- Basket-woven for minimizing internal capacitance
2. Power supply
- All the necessary precautions have been taken in the design and the implementation of this module to reduce the internal noise which is often a nuisance in such a high impedance, high gain system. All the power supplies are highly decoupled, a specific ground layer protects the OpAmp region and the high voltage, and high current components have been carefully separated from the high impedance components.
3. Front-end module
- A fast MOSFET switch able to sharply cut (200nsec) an important coil current (
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