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Safety sensors provide safety features such as electronic safety reverse,finger trap safety,photo cell safety, door speed safety and power failure safety .
Working Principles
Basic Operation
The sliding automatic door can either have a single or double doors opening. The doors open outwards from each other in double doors and left or right sliding in a single door setting.
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NOTE: The same setting can also be utilized In a security system ,instead the sensor sends an alarm signal when the infrared energy of human levels are detected
SENSOR CHARACTERISTICS
Sensor Characteristics
Interface
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electronics Circuits
The sensors have a built in sensor element,amplifiers and a comparator in a three-stage architectural structure . The output from the sensor element has an extremely weak signal in passive infrared scheme and the signal has to be amplified and then converted to an ON/OFF signal with a comparator circuit before output. When a body with temperature different to ambient of the surrounding, moves into the detection field of the sensor,the sensor responds with a small AC signal.The signal is a small voltage around a DC signal that varies,it is therefore compulsory to cancel the DC part of the signal and amplify the AC part. Because the signal is affected by interference from the environment ,a noise filter is necessary.
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Figure 9: Analog Output of ‘NaPiOn’ Motion sensor
Other Uses of the MP NaPiOn Sensor
This kind of sensor is used in a wide variety of applications ranging from automatic indoor lighting systems , automatic air control louver system,On/Off smoke dispersal machine ,Automatic windmill machines,Automatic water faucets ,Automatic parking meter,Non-contact switch for the toilet and many other day to day applications.
FINDING MORE INFORMATION ABOUT NaPiOn Sensors
Materials used and their suitability
The Area Reflective NaPiOn motion detector is developed by a proprietary technology for lenses,detector elements,Integrated circuits (IC’s) and mounting. It is made up Highly sensitive quad element with U-shaped slits around the four light-receiving units . It is also made up of Small multi-lens. With proprietary high precision molding technology, 16 short-focal point lenses with 5 different optical axes are integrated.
Small multi-lens: used to integrate 16 short-focal-point lenses with five different optical axes in order to reduce size.
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T05 metal package : encloses the circuit elements (amplifier and comparator) ,its functions includes shielding and enhancing electromagnetic capabilities
Other Uses of the MP NaPiOn Sensor
This kind of sensor is used in a wide variety of applications ranging from automatic indoor lighting systems , automatic air control louver system,On/Off smoke dispersal machine ,Automatic windmill machines,Automatic water faucets ,Automatic parking meter,Non-contact switch for the toilet and many other day to day applications.
REFERENCES
1. KONE Automatic Sliding Door offering.2015. SD series
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