SECURITEX ELEVATOR SECURITY DIVISION

(ELEVATOR Surveillance)

Wireless Elevator CCTV / Video transceiver using Infrared. (Space Optical Transfer-Audio&Video-SOT-AV)

The Elevator industry is expanding rapidly as building constructed today are much higher and the traveling speed is faster using cabling for CCTV now pose many challenges for system designer and engineer. Cable CCTV system in the elevator main issue is video cable break due to the traveling cable belt move up and down. When such cable break the cost to replace them is high and also the Elevator will have to be down for a long period of time compare to a wireless system. Wireless CCTV system that use radio frequencies transmission system also pose challenges now, as more devices now uses Radio Frequencies Wireless cross talk and interference. Securitex Electronic Systems Engineering being in this business for more than a decade understand the industry face and we constantly source for the new technology to improved on the system supplied, designed and proposed by us.

SOT-AV was manufactured by TOYO ELECTRIC CORPORATION.

What is SOT-AV?

SOT-AV is also known as (Space Optical Transfer-Audio&Video unit) The system uses the Near Infrared LED for transmitting & Photodiode for receiving. Each set of SOT-AV consist of the Transmitter and Receiver.

The SOT-AV c/w the following feature

Designed for  specialized applications on moving elevator, etc.
Transmission ranges of 70/130/250 m with small and compact designed.
Designed for simplified installation and connection.
Wiring and other work are not necessary thanks to cable-less designed.
Range can be extended up to 450 m.
Since it is free from restrictions under laws, it is ideal also for applications where it is difficult to wire cables crossing a public road, for example.
Being immune to disturbance by noise, it can be used in very noisy environment.
FM modulation by the space optical picture transmitter hardly.

CCTV signal Secured

The SOT-AV use in Elevator is also very secured as the camera video signal cannot be transmitted out of the lift shaft as the signal can only be transmit and receive by the SOT-AV Projector and Receiver unit.

Application In Elevator

The SOT-AV unit is very suitable for Elevator CCTV and Elevator Car information Display, especially for Cruise and Commercial Ship Elevator. Oil Rigs Elevator. The reason for SOT-AV on such elevators because there are usually huge machinery operated around the area of such Vessel and the high Electro-Magnetic-Frequency-Interference (E-M-F-I can cause massive interference to a Radio Frequencies type of CCTV application)

Space Optical Transfer-Audio&Video-SOT-AV-Projector & Receiver Unit

Typical Installation of the SOT-AV Series Elevator Audio Video Transceiver in the lift shaft and lift car display

SOT-VA other application include CCTV video and data transmission over open space
Item
250m Type
Model (Projector/receiver)
SOT-AV250PR
I/O signal
NTSC or PAL composite signal: 1 Vp-p (Z = 75)
Transmission distance
0.5-250m
Spread of projector beam
Approx. 0.4, approx. 1.8 m at 250 m
Incident angle of beam on receiver
Approx. 3
Communication method
1:1 one-way optical communication
Modulating method
FM (8 MHz - 15 MHz)
Sender element
Near infrared LED (Core wavelength: 880 nm)
Receiver element
Photodiode
Indicator
Power lamp, receiver lamp, receiving level
Level 2: Green ...Stable receiving, level 1: Red ...Light receiving
Connection
Signal: BNC connector, power: Terminal board connection
Power supply voltage
DC 11-25 V, ripple - 100 mVp-p
Current consumption
Sender
270mA MAX
Receiver
150mA MAX
Ambient operating temperature/humidity
0 - 50C/30 - 85% RH (Dewing not allowed.)
Ambient operating illumination
3,000 lx or under (Direct incident disturbance light to receiver not allowed.)
Vibration resistance
10 - 30 Hz, for 2H each in X/Y/Z direction, double amplitude - 1.0 mm)
Shock resistance
490 m/s 2 , 10 cycles each in X/Y/Z direction
Weight
Sender
Approx. 2.1 kg (Excluding fixtures)
Receiver
Approx. 1.7 kg (Excluding fixtures)
 

Specification for the SOT-AV (Model:SOT-AV70PR)-70 Meters application

Item
70m Type
Model (Projector/receiver)
SOT-AV70PR
I/O signal
NTSC or PAL composite signal: 1 Vp-p (Z = 75 )
Transmission distance
0.5-70m
Spread of sender beam
Approx. 0.5, approx. 0.61 m at 70 m
Incident angle of beam on receiver
Approx. 5
Communication method
1:1 one-way optical communication
Modulating method
FM (8 MHz - 15 MHz)
Sender element
Near infrared LED (Core wavelength: 880 nm)
Receiver element
Photodiode
Indicator
Power lamp, receiver lamp, receiving level
Level 2: Green ...Stable receiving, level 1: Red ...Light receiving
Connection
Signal: BNC connector, power: Terminal board connection
Power supply voltage
DC 11-25 V, ripple - 100 mVp-p
Current consumption
Sender
180mA MAX
Receiver
150mA MAX
Ambient operating temperature/humidity
0 -50C/30 - 85% RH (Dewing not allowed.)
Ambient operating illumination
3,000 lx or under (Direct incident disturbance light to receiver not allowed.)
Vibration resistance
10 - 30 Hz, for 2H each in X/Y/Z direction, double amplitude - 1.0 mm)
Shock resistance
490 m/s 2 , 10 cycles each in X/Y/Z direction
Weight
Sender
Approx. 1.5 kg (Excluding fixtures)
Receiver
Approx. 1.5 kg (Excluding fixtures)

 Specification for the SOT-AV (Model: SOT-AV130PR)-130 Meters application

Item

130m Type

Model (Projector/receiver)
SOT-AV130PR
I/O signal
NTSC or PAL composite signal: 1 Vp-p (Z = 75 )
Transmission distance
0.5-130m
Spread of sender beam
Approx. 0.7, approx. 1.60 m at 130 m
Incident angle of beam on receiver
Approx. 5
Communication method
1:1 one-way optical communication
Modulating method
FM (8 MHz - 15 MHz)
Sender element
Near infrared LED (Core wavelength: 880 nm)
Receiver element
Photodiode
Indicator
Power lamp, receiver lamp, receiving level
Level 2: Green ...Stable receiving, level 1: Red ...Light receiving
Connection
Signal: BNC connector, power: Terminal board connection
Power supply voltage
DC 11-25 V, ripple - 100 mVp-p
Current consumption
Sender
180mA MAX
Receiver
150mA MAX
Ambient operating temperature/humidity
0 -50C/30 - 85% RH (Dewing not allowed.)
Ambient operating illumination
3,000 lx or under (Direct incident disturbance light to receiver not allowed.)
Vibration resistance
10 - 30 Hz, for 2H each in X/Y/Z direction, double amplitude - 1.0 mm)
Shock resistance
490 m/s 2 , 10 cycles each in X/Y/Z direction
Weight
Sender
Approx. 1.5 kg (Excluding fixtures)
Receiver
Approx. 1.5 kg (Excluding fixtures)

Other area of application of the SOT-AV

Include wireless video and data transmission in Airport, Seaport. Refinery, oil & gas facilities. Pharmaceutical Plant. Correctional facilities. Military bases. Marine Vessel. Coastal Express Way. Hospitals and Even school etc. The advantage of the SOT-AV as compared to the Radio Frequencies type system is that for the SOT-AV is almost not subject to external radio frequencies interference. Especially in Refinery and Oil and Gas facilities where some time radio frequencies system are not allow the SOT-AV will be the solution. The Airport is another such facilities that can use SOT-AV.

 
To know more about the above system or if you have customized designed that you need us to provide for your project, please feel free to email us at sales@securitex.com.sg or you can call us at +65-67852171. Our sales and technical department will assist you on the right system to use.

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