DPL - type A radar speed sensor using the current international mature doppler radar sensing technology, can satisfy the locomotive speed is 0.2 km/h to 300 km/h (600 km/h), the use of A solid structure, good stability, strong anti-interference ability, no mechanical transmission and so on characteristics, can detect speed and distance, at the same time is suitable for various kinds of rail transport, can be used in harsh environmental conditions.The microwave radiation energy used in the radar velocity sensor is very low, which is harmless to humans and animals. Even adjacent sensors of the same type do not affect each other.The measured speed is the absolute running speed of the locomotive, which can provide the absolute running speed and running distance of the locomotive with high precision.
Function:
◆ The non-contact radar doppler effect signal is analyzed and processed to obtain the locomotive running direction and speed information
◆ With electrical isolation test and programming input terminal, provide test and programming RS232 communication interface
◆ Dual pulse output with electrical isolation, with 90 degree phase difference
◆ Provide extended electrical isolation half duplex RS485 interface, speed, direction, acceleration and other information verified by the conveyor belt (customized according to user requirements)
Technical indicators：
◆ Work environment：
Environmental temperature: -40℃～70℃
Relative humidity: ≤90%（25℃）
Pressure: 74.8～106kPa（Altitude≤2500m ）
The equipment is mounted on a sturdy body at the bottom of the locomotive
◆ Work Power: DC18V～36V，Work Current: ≤150mA； or DC75V～140V, ≤75mA
◆ Speed range: 0.2km/h～300km/h（DPL-A/2）；0.2km/h～600km/h（DPL-A/1）
◆ Speed measurement error: ≤50km/h，±0.5km/h；＞50km/h，Measured value ±1%
◆ Pulse output:
Two pulse outputs, phase difference 90º±10º
Pulse frequency: 16.85Hz/km/h, standard pulse output duty cycle: 50%±10% (customizable)
Pulse voltage DC15V plus or minus 15%, load resistance 3 k Ω, 9 v or higher output level, low level 1 v or less
Short circuit protection, when the load short circuit for 30 minutes, return to normal work
◆ Antenna transmission frequency: 24.150GHz±0.025GHz
◆ Installation height: 300mm - 1000mm
◆ Angle of emission: 40°±0.5°(DPL-A/2)； 40°±0.5°， 50°±0.5°（DPL-A/1）
◆ Shell protection: shell protection grade: IP67
