The invention discloses a mine dust concentration and environmental parameter automatic detection and
control system which comprises an upper computer and at least one downhole
control unit, and the downhole
control unit comprises a downhole sensor group, a downhole PLC controller and a downhole
peripheral device; the downhole sensor group comprises a dust concentration sensor, a temperature and
humidity sensor, a flow sensor and an
infrared sensor; the downhole PLC controller is used for carrying out analysis, screening and contrast on a received
data signal sent from the sensor group, then forming a
control signal and further outputting to the downhole
peripheral device; the downhole
peripheral device comprises a spray
system and an
alarm device; and the upper computer and the downhole PLC controller carry out
data signal transmission through a communication module, thereby being capable of carrying out on-line real-time monitoring. The
system can lead dust concentration,
humidity, temperature and other environmental parameters of related points of a downhole operation space to be measured by the sensor group in a real-time manner, and further adopt the corresponding control measures, such as alarm, spray dedusting, cooling and the like.