How to read readings from a mechanical meter (other than image recognition)?

Question

Electronics

There is a certain gauge having a dial and an arrow. It is necessary to take evidence from him. Are there any options to do
it like that other than recognizing a photo of the dial?

Answer 1

Если датчик измеряет что-то электрическое - то можно измерить значение прямо с его входа.
Если это что-то типа счетчика воды или датчик давления в водопроводе...
Разбирать датчик можно (получить доступ к стрелке)?

Answer 2

You could expand on the topic.
Many inputs can be:
1. What kind of sensor? - to measure any electrical quantities, it is easier to connect in parallel, let's say, and take readings. For non-electric, this option, of course, is not suitable.
2. What kind of accuracy do you need? From this, the approach to taking readings varies greatly.
3. Is it possible to get close to the insides? If it is sealed and certified, then the approach is different.
4. How often to shoot? If, for example, you need to detect the jumps of the arrow, you need a fundamentally different approach compared to taking smooth readings.
5. Environmental conditions (interference, vibration, dust, high humidity, hot shop conditions, outdoor conditions, etc.)?
6. How far is the data transfer?
etc.
Вам толковый инженер нужен, походу, а не совет в форуме.

Answer 3

Проверять наличие контакта, электронно измерять сопротивление, иным способом определять положение стрелки, все зависит от датчика.

Answer 4

Ждём комментариев по типу датчика.