CS2500 Collision Avoidance System

The Entek Collision Avoidance System (CAS) is aimed at reducing the potential for collisions between cranes and other moving or stationary equipment. Using high performance laser sensors, optimized for presence detection applications, the CAS outperforms other systems, while offering one of the highest performance/cost values compared with similar systems on the market.

The CAS is modular in design, allowing components and features to be added if and when required. This accommodates the many different configurations required for a wide variety of applications that are possible.

All components are industrial quality, and suitable for installation in fixed or mobile equipment applications, even within harsh environments.

Collision Sensor Controller (CSC)
Each CSC monitors the signals from up to 4 installed ULS sensors, and operates audible or visual alarm(s), or can even be configured to interlock into an existing control system. The CSC can also provide data output to other systems (if required). Additional time and range filtering can be implemented in the CSC if there are requirements beyond the capabilities of the ULS sensors. In most collision avoidance scenarios, the ULS settings are more than adequate. Data logging options are also possible with the CSC if required.

The CSC can provide a number of output options. For example, it is possible to have a visible indicator stay on as long as there is interference with one or more sensors, but have the audible indicator only sound for a few seconds at the start of each detection, allowing the operator to use a radio or other communications device to resolve the issue, without the audible alarm continuing to sound.

The CSC also provides the power for the ULS sensors, and houses the wireless transceivers, in the case of wireless options.

The CSC is housed in a NEMA rated enclosure with cable entry points on the bottom, and a hinged door on the front. The audible and/or visible signaling devices can be mounted on the enclosure door, or hardwired remotely as required. The CSC can also be supplied as an OEM “board only” version, suitable for integration into an existing control system panel.

The CSC is suitable for use in both “curtain” type applications, and also “range” type applications.

ULS (Laser) Sensor
  • Wavelength: 905 nm (infrared)
  • Eye Safety: Class 1, 7mm (FDA, CFR21)
    Class 1 M (IEC 60825-1:2001)
  • Beam Divergence: 3 milliradians (~0.3 m @ 100m)
  • Operating Temp: -30C to 60C
  • Shock/Vibration: MIL-STD-810E
  • Sealing:      NEMA4 (IP54)

Each sensor module is housed in a NEMA rated enclosure, and can be installed near the base of the crane boom. Each sensor will create a detection “line” the entire length of the boom from the sensor onwards. Multiple sensors can be installed to create a “curtain” of beams as may be required. Sensors may be mounted on a slight angle, so as to create a diverging beam, in order to make the detection distance at the top of the boom larger than near the base of the boom. This is done to compensate for the higher velocity of the boom tip when swinging.

The signal from all the Installed Sensors will be connected back to the CSC (Collision Sensor Controller) unit mounted in the machine cab. These connections can be hardwired, or wireless if needed. In detection mode, each sensor will detect an object crossing its beam, within a maximum trip distance. In this case, the trip distance would likely be set to just past the tip of the boom.

Although it is never recommended to look directly into a laser, the ULS Class 1 laser is safe if you do.

Wireless Options

Wireless Sensors
Short range wireless transceivers can be optionally installed into each ULS sensor, eliminating the need for signal wiring to each sensor from the CSC. Each sensor would still require DC power or batteries (solar charging optional).

Wireless Signaling
Additional CSC receiver units may be installed into other cranes and equipment to signal a collision detected on another crane. For example, all cranes working on a site could be alerted when any one crane detects a collision, since the crane detecting the collision may not actually be the crane or equipment in motion. If all cranes are equipped with Collision Detection Systems, this also provides a level of redundancy.

Mounting Options
The ULS is housed in a NEMA rated aluminum enclosure. A secondary enclosure can be provided to further protect the sensor from damage due to external contact with other objects, excessive moisture, dust and dirt.

A swivel type mount can be provided that will bolt directly to the ULS secondary enclosure, and can be fastened to the crane boom structure. The mount can also be supplied in various lengths, to change the boom to sensor distance (gap) at the base.

A pipe adapter can be used to attach the swivel mount to a pole or pipe.
A variety of sizes are available to accommodate most installation requirements.