14 lines
593 B
Python
14 lines
593 B
Python
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from sqlalchemy import Column, Integer, Float, DateTime, func
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from app.database import Base
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class LineState(Base):
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"""产线运行状态单例（id=1），用于停机自动检测。"""
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__tablename__ = "line_state"
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id = Column(Integer, primary_key=True, index=True)
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speed = Column(Float, default=0, comment="当前线速度 m/min")
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zero_since = Column(DateTime, comment="速度为0的起始时间")
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open_downtime_id = Column(Integer, comment="当前未结束的自动停机记录id")
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updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
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