Vehicle Utrasonic Park Sensor

Overview:

Parking sensors are proximity sensors for road vehicles designed to alert the driver to obstacles while parking.

These systems feature ultrasonic proximity detectors to measure the distances to nearby objects via sensors located in the front and/or rear bumper fascias or visually minimized within adjacent grills or recesses.

The sensors emit acoustic pulses, with a control unit measuring the return interval of each reflected signal and calculating object distances. The system in turns warns the driver with acoustic tones, the frequency indicating object distance, with faster tones indicating closer proximity and a continuous tone indicating a minimal pre-defined distance. Systems may also include visual aids, such as LED or LCD readouts to indicate object distance. A vehicle may include a vehicle pictogram on the car’s infotainment screen, with a representation of the nearby objects as coloured blocks.

Rear sensors may be activated when reverse gear is selected and deactivated as soon as any other gear is selected. Front sensors may be activated manually and deactivated automatically when the vehicle reaches a pre-determined speed — to avoid subsequent nuisance warnings.

As an ultrasonic systems relies on the reflection of sound waves, the system may not detect flat objects or object insufficiently large to reflect sound — e.g., a narrow pole or a longitudinal object pointed directly at the vehicle or near an object. Objects with flat surfaces angled from the vertical may deflect return sound waves away from the sensors, hindering detection.

 

1416161381674Project:

We have produce low cost,full rear park sensor with 4 ultrasonic sensor and buzzer,Indicator LED & 7Segment panel for Negarin Sanat Asia Co.

Also we designed a system for testing boards and calibration the sensors with each board.

Our board sends the distance data in K-Line (ISO9141) than could be connect with SDM+,SDM General and other monitors

sensorTeam Member:

Pouya Dadgar

Yaser Gheibi

Hadi Robati

Year:

2013