Need for Anti Collision Device
An Anti Collision Device is categorized as a safety device which prevents an accident due to the collision of two machines.Without such a device, manually or automatically operated machines can travel outside their working area and damage nearby machines, equipment or structures and can cause dangerous situations .
Infrared Based safety devices make use of the infrared spectrum of light which is invisible to human beings.Infrared light is higher frequency light than radio frequencies and it is used in thousands of industrial applications.
Advanced MicroProcessor based safety device
The ACD-01 and ACD-02 are microprocessor based Infrared Anti collision Device (ACD) modules to increase safety and prevent collision of overhead cranes. ACD-01 is 1 Distance Set point module with Single Relay Output , while the ACD-02 is 2 Distance Set Point Module with Dual Relay Output.They are supplied with an infrared Emitter & Detector which emits and detects light waves in the infrared spectrum and an infrared reflector ,which reflects the infrared light emitted by the device.
Easily Set the Detection Distance.
1st ACD to be mounted on 1st Crane with its reflector Mounted on 2nd Crane. 2nd ACD to be Mounted on 2nd Crane with its reflector Mounted on 1st Crane. Such a system will allow both the cranes to stop at the same time. Next, bring both the overhead cranes at the precise distance you want the power to be cut. The infrared reflector has to be mounted in level with the infrared Emitter. To help with the reflector mounting , an inbuilt laser is provided which points to the precise location where the reflector needs to be mounted.Once, the reflector and ACD are properly mounted, rotate the distance knobs in the clockwise direction until the relay indicating light switches on. This means the distance is set.
10 Millisecond Fast Reaction time
Greater than 10 Meter Detection Distance
Good Immunity from nearby interfering Light Sources
The Sensitivity to noise of the detector of the Anti Collision Device automatically reduces in the presence of nearby noisy light sources to insure proper operation.
2 Set Points.
1st Set Point to reduce Speed of Crane, 2nd Set point to stop Crane
|Number of Set Points||2|
|Power Consumption||0.5 watts|
|Operating Temperature||0 degrees to 70 degrees|
|Maximum Transmission Distance||10 Meters|
|Minimum Transmission Distance||1 Meter|
|Minimum irradiance||0.08 W/m2|
|Maximum Irradiance||30 W/m2|
|Suppression of Interference from nearby Light Sources||Yes|
|Infrared Reflector Required||Yes|
|Infrared Carrier Frequency||38 KHz|
|Relay Output Rating||110VAC 10 Amps
220VAC 10 Amps
30VDC 10 Amps
|Indicating Leds||Red Led|
|Laser Alignment||Provided for alignment of reflector|
More about Infrared Light
This infrared light can also be used to communicate data between devices. All kinds of remote controls in home appliances such as Air Conditioners & Televisions use the IR spectrum. But to prevent natural sources of infrared light such as the sun,from interfering with the safety devices, the infrared radiation from the emitter is modulated at a certain frequency .This Modulated data is then received by the Infrared receiver and demodulated to extract the data. Infrared receiving devices are made up of photodiodes which are semiconductor based integrated circuits which react to infrared light by inducing a small current. Infrared transmitting devices are made up of semiconductor material such as GaAlAs & GaAs. The transmitters emit the IR light in front of them within a certain angle exactly like your Car HeadLIghts.