Identification card introduction
Personnel positioning system with the identification card is the coal mine operating personnel management system (referred to as System) is a main equipment, which has a unique card number information, and wirelessly send KJ168-D mine intrinsically safe reader substation.
Identification card parameters
Identification card as mine intrinsically safe, proof mark for the ExibI.
Executive Standard: Q/ZCM020-2009
application range ：
Identification cards can work under the following conditions:
b) Relative humidity：≤95%（+25℃）。
d) In a methane and coal dust explosive mixture of coal mine.
Technical indicators and the basic functions：
•Identification card uniquely coded information can be automatically sent to KJ168-D mine intrinsically safe reader sub-station.
•Main electrical properties:
a) Transmitting frequency：915MHz。
b) Transmit Power：≥－35dBm。
c) Receiving Sensitivity：≤－110dBm。
d) Modulation: MSK.
e) Work: gap-type.
f) the card information can be transmitted wirelessly transmitting communication distance> 10 m (unobstructed)
•Battery pack performance:
a)Battery Model Name: Two AAA alkaline batteries (standard: 1.5V, Model: SIZE AAA alkaline batteries).
b)Working time: working time is not less than six months.
•The safety parameters:
a) the battery maximum open circuit voltage U0: 3.3V, battery maximum short circuit current I0: 4.4A.
b)Rated working voltage: 3.0V, operating current: ≤ 5mA
•Explosion-proof type: Mine intrinsically safe, marked as "ExibI".
•Dimensions and weight
a)Overall Dimensions: 68mm×46mm×19mm。
b)Weight: about 80g.
•Housing material: ABS plastic, exposed area of not more than 100cm2.