Alarm Output Specification classified by distance between sensors

Condition logic according to priority of alarm level is as below. (the identical sensor)

Fig 1: Alarm Output Specification Pattern

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*α value definition

1. low priority sensor off: α = 0ms
2. low priority sensor is 1st warning level: α < 340ms
3. low priority sensor is 2nd warning level: α < 170ms

*β value definition

1. low priority sensor is 1st warning level: β = 1700ms
2. low priority sensor is 2nd warning level: β = 1700ms
3. low priority sensor is 3rd warning level: β = 700ms

Alarm control by sensing distance is as below

1. First warning area (61cm ~ 120cm/24 ~ 47.2 in.)
   Fig 2: Buzzer Output Blinking Pattern - First Warning Area

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2. Second warning area (31cm ~ 80cm/12.2 ~ 23.6 in.)
   Fig 3: Buzzer Output Blinking Pattern - Second Warning Area

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3. Third warning area (less than 30cm/11.8 in.)

Fig 4: Buzzer Output Blinking Pattern - Third Warning Area

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