JAC J5, Owner'S Manual

Page: 50 / 166

Working principle
The parking radar system is designed
to sense obstacles behind your car and
measure an approximate distance
between the obstacle and your car
based on an ultrasonic
distance
measurement principle and a computer
fuzzy processing technology. When
shifting to reverse gear, the reverse
switch is on. The reversing lamp
comes on. Once receiving signals, the
control will cause the ultrasonic sensor
to send an ultrasonic signal. Once
receiving an echo signal, the sensor
Therefore, it is recommended that
you carefully look around to make
sure that there is no obstacle
behind your car before reversing.
○ The parking radar system is
incapable of identifying obstacles
too close to your car (less than
300mm).
will transmit it to the control for analysis and process. By analyzing and processing
the echo signal, the control will judge whether there are any obstacles behind and
the distance between the nearest obstacle and your car. When reversing, the
parking radar will begin to work. The instant that the radar begins to work, it will
conduct a fast self-test to ensure all components are in good condition. The
self-test results come as follows:
Self-test results
Normal
Part of the system fails to work normally
The system fully fails to work
Buzzer
One sound
Two sounds
Hasty sound lasts a spell of time and
then stops
In normal condition, the control will send impulse signals at different frequencies
to the buzzer depending on obstacle locations measured. The buzzer will send
sounds at different frequencies to you depending on distances of obstacles from
your car :
Distance between
car and obstacle
0~0.4m
0.4~0.8m
0.8~1.2m
Voice prompt
Continuous sound
1/8s/sound
1/2s/sound
Zone Notice
Danger zone Stop reversing
Slow speed zone Slow speed reversing
Safe zone Normal reversing
43