| 摘要 |
The invention relates to a supervision and control method for preventing poor air quality and fire as well as issuing an alarm regarding a dangerous situation. The method uses an indicator unit (1) mounted to the ceiling or on a wall and provided with an air quality sensor (3), as well as one or more control and supervision units (8), which are as an additional device or as an integrated or programmatic characteristic connected to the home appliances or electrical devices. The air quality information measured by the air quality sensor (3) is sent from the indicator unit (1) to the control and supervision unit (8). The presence of a user is monitored and ventilation is controlled on the basis of air quality information. On the basis of air quality information, the operation and/or energy supply of also other home appliances or electrical devices is controlled than those concerned with ventilation. Control is implemented in stages taking into consideration the home appliances or electrical devices in use. The effect of control on air quality is monitored by the air quality sensor (3) and an alarm is issued and/or the supply of electricity to predetermined home appliances and/or electrical devices is cut off if, regardless of control, a preset alarm limit is exceeded, when the presence of a user is not detected. |
