37 lines
1.6 KiB
Python
37 lines
1.6 KiB
Python
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from sqlalchemy import Column, Integer, String, Float, DateTime, Text
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from sqlalchemy.sql import func
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from app.core.database import Base
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class EmissionFactor(Base):
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"""碳排放因子"""
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__tablename__ = "emission_factors"
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id = Column(Integer, primary_key=True, autoincrement=True)
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name = Column(String(100), nullable=False)
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energy_type = Column(String(50), nullable=False) # electricity, natural_gas, diesel, etc.
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factor = Column(Float, nullable=False) # kgCO2/单位
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unit = Column(String(20), nullable=False) # kWh, m³, L, etc.
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region = Column(String(50), default="north_china") # 区域电网
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scope = Column(Integer, nullable=False) # 1, 2, 3
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source = Column(String(200)) # 数据来源
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year = Column(Integer)
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created_at = Column(DateTime(timezone=True), server_default=func.now())
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class CarbonEmission(Base):
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"""碳排放记录"""
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__tablename__ = "carbon_emissions"
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id = Column(Integer, primary_key=True, autoincrement=True)
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date = Column(DateTime(timezone=True), nullable=False, index=True)
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scope = Column(Integer, nullable=False) # 1, 2, 3
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category = Column(String(50), nullable=False) # electricity, gas, heat, etc.
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emission = Column(Float, nullable=False) # kgCO2e
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reduction = Column(Float, default=0) # 减排量 kgCO2e (光伏、热泵节能等)
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energy_consumption = Column(Float) # 对应能耗量
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energy_unit = Column(String(20))
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emission_factor_id = Column(Integer)
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note = Column(Text)
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created_at = Column(DateTime(timezone=True), server_default=func.now())
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