Geely Emgrand X7. Manual part — 637
Geely Emgrand X7. Manual part - 637
11.13.2.2 Sound level of alarm prompt tone
NL11-3010b
Detection
distance
(cm/in)
Distance
error
(cm/in)
Alarmprompt tone
(Time error±10%)
2547
11.13.2.3 Sensor area
Sensor coverage map
NL11-3011b
Test conditions
– Use
Φ750mm PVC pipe to cover the complete vehicle.
–
Testing temperature 25℃
–
Testing wetness 45-75 % RH
Vertical
distance
Horizontal
distance
2548
Rear three-probe overall coverage diagram
NL11-8002b
6
57.
9
0.
0
0.
1
0.
2
0.
5
0.
4
0.
3
0.
9
1.
0
0.
8
0.
7
0.
6
1.
1
1.
2
1.
3
1.
4
0.
0
0
.3
7.
0
6.
0
2.
04
.
05
.00
.8
5.
04
.03
.
02
.
01
.0
0.
8
0
.6
0.
7
8.
0
7.
0
6.
0
5.
0
4.
0
3.
0
2.
0
1.
0
0.
0
1.
0
2.
0
3.
0
4.
0
5
.0
6.
0
8.
07
.0
0.
1
：M
0.
0
0.
1
0.
2
0.
5
0.
4
0.
3
0.
9
1.
0
0.
8
0.
7
0.
6
1.
1
1.
2
1.
3
1.
4
M
2
.
1°
1851.9
869.0
Front two-probe overall coverage diagram
NL11-8003b
M
0.
0
0.
1
0.
2
0.
5
0.
4
0.
3
0.
9
1.
0
0.
8
0.
7
0.
6
1.
1
1.
2
1.
3
1.
4
2.
03
.0
0.
00
.6
0.
7
0.
5
0.
4
0.
8
0.
4
0.
5
2.
01
.0
0.
3
7.
06
.0
8.
0
8.
0
7.
0
6.
0
5.
0
4.
0
3.
0
2.
0
1.
0
0.
0
1.
0
2.
0
3.
0
4.
0
5.
0
6.
0
8.
07
.0
0.
1
0.
0
0.
1
0.
2
0.
5
0.
4
0.
3
0.
9
1.
0
0.
8
0.
7
0.
6
1.
1
1.
2
1.
3
1.
4
30. 3°
303. 6
0TNP0TNPA
0TNP0TNPA
42
1.
1
1239. 8
Full load
ground line
Full load
ground line
2549
11.13.3 System operating principle
11.13.3.1 Control unit function of parking motor
NO Functional
planning NO Functional
planning
1
Generate the TX (48KHz square wave)
signal driving the sensor and USART
signal (bit rate 2400bps) of the
instrument panel.
6
Detect the driver's reversing signal
(0V low.
The level is valid; and if invalid, the
level is +12V.
2
Receive RX (obstacle echo) signal from
the sensor.
7
Detect the vehicle transmitted back
through wheel speed sensor.
Speed signal
3
The RX signal from the sensor is
converted as digital pulse signal after
being filtered and demodulated by the
module.
8
Sensor Malfunction Diagnosis
4
The module detection calculates the
distance of the obstacle and the
corresponding frequency alarming digital
signal to the dashboard within specified
range.
9
Detect the key signal input by the
driver.
(reserve+12V HF is effective)
5
Provide the stable driving voltage to the
sensor.
10
Detect the driver's reversing signal
(+12V.
High level is valid.)
11.13.3.2 Parking motor work logic
Work mode
Dashboard input signal acquisition state
Enabling state of the front and
rear sensors
Reversing mode
R speed effective
All the sensors work.
Parking mode
Stop mode (Gear P or hand brake signal)
All the sensors do not work.
Running speed ≤ 10km/h
Left front/ right front sensor
working
Forward mode
Running speed > 10km/h
All the sensors do not work.
Mute button
reserved
Close buzzer beeps. For non-self-locking key, operate once, and switch the
silent alarm state.
2550
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