METHOD FOR CONTROLLING AND MONITORING THE LEVEL OF CONFINEMENT OF INTERNAL AIR, AND RELATED ENVIRONMENT DEVICE AND STATION

• US 20150153061A1
• Filed: 06/19/2013
• Published: 06/04/2015
• Est. Priority Date: 07/02/2012
• Status: Abandoned Application

• Current Assignee: Centre Scientifique Et Technique Du Batiment
• Original Assignee: Centre Scientifique Et Technique Du Batiment
• Inventors: Riberon, Jacques Henri, Ramaho, Olivier
• Application Number:
  US14/412,314
• Publication Number:
  US 20150153061A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F24F 11/0001 for ventilation F24F11/30 takes precedence
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/63 Electronic processing
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2110/20 Humidity
• CPC Class Codes: F24F 2110/40 Pressure, e.g. wind pressure
• CPC Class Codes: F24F 2110/50 Air quality properties
• CPC Class Codes: F24F 2110/70 Carbon dioxide
• CPC Class Codes: F24F 2120/00 Control inputs relating to users or occupants
• CPC Class Codes: F24F 2120/10 Occupancy
• CPC Class Codes: G01N 33/004 CO or CO2
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02B 30/70 Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention relates to a method for controlling and monitoring the level of confinement of the internal environment of a room, which includes determining the confinement index I from measurements of the CO₂ content during a predetermined period, and reducing the level of confinement in accordance with the CO₂ content. According to the invention, periods of occupancy of the internal environment are determined by means of at least one presence sensor provided with a calibration device which enables the sensor to react to the presence of humans as from an occupancy threshold. The invention also relates to a device configured in particular to calculate the confinement index I.

Claims

1. Method for regulating and controlling the level of confinement of an internal environment of a local, comprising:

determination of a confinement index I, comprising

i) measurements of the CO₂ level at regular time intervals during determined occupation periods;

ii) at the end of the measurements of the CO₂ level, the determination of a confinement index I from said measurements;

iii) repetition of steps i) and ii);

as soon as a measurement of the CO₂ level exceeds a predetermined threshold S₂, reduction in the level of confinement until a CO₂ level is reached equal to a predetermined threshold S₁, less than S₂, this reduction in the level of confinement being effected during the period of measurement of the CO₂ level as many times as a CO₂ measurement exceeds the threshold S₂,

characterised in that periods of occupation of the internal environment are determined by means of at least one presence sensor equipped with a calibration device enabling it to react to human presence as from an occupation threshold.

2. Method according to claim 1, characterised in that several presence sensors communicate with one another and/or with a computing means for determining periods of occupation.

3. Method according to claim 2, characterised in that the information from said at least one sensor is hierarchised according to a law of the master/slave type.

4. Method according to claim 1, characterised in that said at least one sensor is a passive infrared sensor.

5. Method according to claim 1, characterised in that it comprises a transmission of data related to the index I, to a remote management centre.

6. Device for regulating and controlling the level of confinement of the internal environment of a local used according to the method of claim 1, the device comprising a CO₂ sensor, data recording means, computing means, and preferably signalling means, characterised in that it is connected to at least one presence sensor equipped with a calibration device enabling it to react to human presence as from an occupation threshold.

7. Device according to claim 6, characterised in that it comprises at least one temperature, humidity and/or pressure sensor.