Alarm system for telecommunication manholes mines
CMACS

Mobirise

The main advantages of the system
The challenge system is to notify the owner or person in charge of the opening of the fact/closing manhole telecommunications mine. The system consists of active sensors mounted in the shaft near the hatch and software in the central monitoring.

Sensor
The sensor consists of 2 parts: a spring-loaded rod installed in the vicinity of the mine manhole and an electronic unit mounted inside the shaft. A spring-loaded rod is attached at one end to the shaft wall. Inside the rod are power wires, antenna cable, and data cable (optional). The second end of the rod is to be with a rectangular heel, orange color, with a warning inscription (STOP). Inside the heel, a GSM antenna is installed. The optional inside heel can be fixed on the following devices:

Beeper – in the open manhole mode and disabling the alarm, he takes a short sound pulse to warn pedestrians. In the case of tripping alarm (unauthorized access, theft of manhole), he works in a mode siren
Warning lights – work in flashing mode with an open manhole. Additional warning information for pedestrians and vehicles
RFID card sensor – designed for reading the employee card, opened a manhole. Map information is transmitted to the monitoring center

Mobirise
Mobirise

The principle of operation of the sensor
When you open a manhole a spring-loaded lever spring action translated into a vertical position. GSM module sends a message via SMS to the monitoring center. If the sensor is equipped with a beeper, is included periodic warning beeps. If the sensor is equipped with warning lights, they are included in a flashing mode. If the sensor is equipped with a system of reading RFID cards, the signal electronics waits for a predetermined time (30 seconds to 2 minutes) for authorization of RFID- cards. If the card is brought by an employee, is then sent to the monitoring center
card identifier. The software in the monitoring center of the hatch as the notes authorized manner opens and displays information about who it was opened.

If the card has not been brought closer to the prescribed time, the following occurs actions:

Software issues a warning about unauthorized manhole opening with an indication of origin, and description (paid on the installation stage system)
If the sensor is equipped with a beeper, he transferred to the siren mode. Silencing the siren and remove of the warning made by the operator remotely from the monitoring room.
When you close the manhole (if no alarms unauthorized opening), the spring-loaded lever is returned to its original position and after 5 minutes the sensor sends an SMS to the monitoring center to close and translates their systems into standby mode. Software as a closed manhole mark.

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