完善摄像机接口, 增加实时轮询参数

zhangzengfei

2023-01-16 71156fd4aaa5f18ba9f95f9f08bc930a321e257c

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new_obj.to_string()=[1.20,3.40,123456.78,5.00,23000000000.00]
new_obj.to_string()=[1.2,3.4,123456.78,5.0,2.3e10]