You can always try contacting the manufacturers to get the data. You might have better luck contacting the engineers specifically, if you can find them.
I don't know much about the industry, but I would suspect you can make a case for opening up their formats, because they are primarily hardware manufacturers.
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我对此没有经验，但 Google 找到了这个库libdivecomputer。
它支持多种设备和平台，并且该库已获得 LGPL 许可。但是，并非您提到的所有品牌都受到支持。
I have no experience with this but Google turned up the library libdivecomputer.
It supports a number of devices and platforms, and the library is LGPL licensed. However, not all brands you mention appear to be supported.
您可以随时尝试联系制造商以获取数据。如果您能找到工程师，那么您可能会更幸运地专门联系他们。
我对这个行业了解不多，但我怀疑你可以提出开放他们格式的理由，因为他们主要是硬件制造商。
You can always try contacting the manufacturers to get the data. You might have better luck contacting the engineers specifically, if you can find them.
I don't know much about the industry, but I would suspect you can make a case for opening up their formats, because they are primarily hardware manufacturers.