Making metal detector
Some web sites and forums share numerous diagrams and information claimed to be related with making a detector. Yet one should remember that these would not suffice to build a detector. Amateurs in the field claim in such posts that detectors can be produced just like fixing an electronic device such as a radio or a television.
They do not dwell upon the expertise and R&D requirements, as well as the substantial investments required for building detectors, as they tend to ignore numerous details in the production stage.
This matter requires expertise. It is beyond the capabilities of 2-3 persons. Built for hobby purposes only, and partly working in tests, these detectors would merely beep in the vicinity of metals. They would not operate in the field, on actual terrain. Building a device capable of working on actual terrain requires some qualities. These would entail the field data and user feedback received from all over the world, electronic components, engineering, mechanical and analog equipments, in that order.
A team of professionals to make use of and adopt all such elements would be required. This team would develop all aspects of the detector expertise through long and tiring efforts, compile data, and achieve development.
Leading firms offering advanced technology work on a professional footing. This is a function of their commercial enterprise status. In addition to substantial investments, tens, even hundreds of detector testing experts are required all over the world. Even the coordination of their reports and improvements is a piece of work. Yet, only through this arduous process one can develop a device that would work best on various terrain conditions prevalent all over the globe. Organization for this processes, on the other hand, requires a globally recognized brand.
The information disclosed on Internet is often no more than the drawings for a simple motherboard or analog card. Anyone who has a detector available can get the motherboard drawings easily. The drawings thus published are almost always those of older, non-working, sub-par devices. One should be aware that the metal sensitivity, metal discrimination capability, terrain adaptation, and timing are crucial matters for detectors.
The "Software" component, hidden from the first glance, is what analyzes data real-time, and reports it to the user. All detector producers offer their detectors with closed source and encrypted software, in order to protect their software from prying eyes. No analog or digital card drawing would work without a robust software.
A robust software, on the other hand, can be produced only by a team of professionals working for years on scientific experiments and related R&D processes. What is crucial here is the multi-dimensional combination of the experience and technological know-how. In a nutshell, details of an accurate and powerful detector lies in four major elements.
1- Analog Data
2- Digital Infrastructure
3- Advanced Software
4- Accumulated Experience in the Field of Detectors
These elements can be combined only in a professional (commercial) enterprise. An amateur detector built for hobby purposes cannot be compared against a commercial one.
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