Tower Crane Anti-Collision and Zone Protection and Load Moment Indicator

Main Functions
Measurement. Real time measure the slewing angle of main jib, radius of trolley (angle of jib and radius of tip for luffing tower crane), hook height, load, wind and so on.
Indication. Real time indicates the slewing angle of main jib, radius of trolley (angle of jib and radius of tip for luffing tower crane), hook height, load, wind, rated load at present radius, percentage of actual load to rated load, main jib positions of nearby tower cranes, the position of trolley and so on.
Alarm. Visual-audible pre-alarm when the load or radius reach pre set pre-alarm point; Visual-audible alarm when the load or radius reach pre set alarm point; When one set in the network go wrong, the alarm light at top of cabin(option) will give alarm.

Moment Protection. According to the load information, allow or prohibit the hook upwards or trolley forwards. Include 3 contacts: Hook upwards, trolley forwards(high speed, low speed).
Anti-collision. According to the real time positions of tower cranes, allow or prohibit the movement of trolley and slewing. Include 11 contacts: 4 contacts for trolley(high speed forwards, low speed forward, high speed back wards, low speed back wards); 7 contacts for slewing(left high speed, left low speed, right high speed, right low speed, left inverse ejecting, right inverse ejecting, braking).

Wireless Communication. Each controller could communicate wirelessly among tower cranes and accomplish anti-collision and zone protection. Each controller could be added or quit the network without effecting other tower cranes' work.
Data Set and Wirelessly Upload. All the data about site, tower crane and zone could be set on the computer in the office and wirelessly upload them to each controller on the tower crane,
Sensors Calibration. Calibration and measurement could be achieved by several simple operation after installation.

Records of controlling. All the records of controlling can be stored in the controller, which can be downloaded to surveillance computer for checking.
Updating of load chart of tower crane. Common load chart of tower crane have been stored in the controller and it could be updated by customer himself( this one will be realized in latest edition. The customer is required to install and operate Microsoft Access)
Authorization of Operation( will be realized in latest edition). In case of unauthorized operation, an authorized password is required for data setting and operation.