Professional China Vehicles Sensor - LSD1xx Series Lidar manual – Enviko

System components

The basis system of LSD1XXA is consisted of one LSD1XXA laser radar, one power cable（Y1）, one communication cable（Y3） and one PC with debugging software 。

1.2.1 LSD1XXA

Power cable

Cable definition

7-cores power cable：

Pin	Terminal No	Color	definition	Function
	1	Blue	24V-	Negative input of power supply
	2	Black	HEAT-	Negative input of heating power
	3	White	IN2/OUT1	I/O input / NPN output port 1（same to OUT1）
	4	Brown	24V+	Positive input of power supply
	5	Red	HEAT+	Positive input of heating power
	6	Green	NC/OUT3	I/O input / NPN output port 3（same to OUT1）
	7	Yellow	INI/OUT2	I/O input / NPN output port2（same to OUT1）
	8	NC	NC	-

Note：For LSD101A、LSD131A、LSD151A, this port is NPN output port（open collector），there will be low lever output when object is detected at the detection area.

For LSD121A, LSD151A, this port is I/O input port, When the input is suspended or connected to low, it is identified as high level and output as “0″ in the communication protocol.

4-cores power cable：

Communication Cable

  1.3.3.1 Communication cable

1.3.3.2 Cable definition

Pin	No	Color	Definition	Function	No	RJ45
	1	Orange white	TX+E	Ethernet data sending	1
	2	Green white	RX+E	Ethernet data receiving	3
	3	Orange	TX-E	Ethernet data sending	2
	4	Green	RX-E	Ethernet data receiving	6

PC

The following figure is an example of PC test. For the specific operation o please refer to “LSD1xx PC instructions”

Technical parameter

Characteristic curve

Relationship curve between detection object and distance

Relationship curve between detection object reflectance and distance

Relationship curve between light spot size and distance

Electrical connection

3.1 Output interface definition

3.1.1 Function description

3.1.2 Interface definition

3.1.2.1 Y1 interface

      7-cores interface cable：

Pin	No	Color	Signal definition	Function
	1	Blue	24V-	Negative input of power supply
	2	Black	HEAT-	Negative input of heating power
	3	White	IN2/OUT1	I/O input / NPN output port 1（same to OUT1）
	4	Brown	24V+	Positive input of power supply
	5	Red	HEAT+	Positive input of heating power
	6	Green	NC/OUT3	I/O input / NPN output port 3（same to OUT1）
	7	Yellow	INI/OUT2	I/O input / NPN output port2（same to OUT1）
	8	NC	NC	-

Note ：For LSD101A、LSD131A、LSD105A, this port is NPN output port（open collector），there will be low lever output when object is detected at the detection area.

For LSD121A, LSD151A , this port is I/O input port, When the input is suspended or connected to low, it is identified as high level and output as “1″ in the communication protocol; When the input is connected to 24V +, it is identified as low level and outputs as “0″ in the communication protocol.
4-cores interface cable：

Pin	No	Color	Signal definition	Function
	1	Blue	24V-	Negative input of power supply
	2	White	HEAT -	Negative input of heating power
	3	NC	NC	Blank
	4	Brown	24V+	Positive input of power supply
	5	Yellow	HEAT+	Positive input of heating power
	6	NC	NC	Blank
	7	NC	NC	Blank
	8	NC	NC	Blank

3.1.2.2   Y3 interface definition

Pin	No	Color	Signal definition	Function
	1	Orange white	TX+E	Ethernet data sending
	2	Green white	RX+E	Ethernet data receiving
	3	Orange	TX-E	Ethernet data sending
	4	Green	RX-E	Ethernet data receiving

3.2 Wiring

3.2.1  LSD101A、LSD131A、LSD105A  Switching output wiring（7 cores power cable）

Note：
●When the switch output line is not used, it shall be suspended or grounded, and it shall not be short circuited with the power supply directly；
●V + is not more than 24VDC voltage, and must be grounded together with 24VDC.

3.2.2  LSD121A ，LSD151A Switching output wiring（7 cores power cable）
3.2.3  LSD121A、LSD151A external electronic wiring diagram（7-cores power cable）
The lidar input cable should be connected with external Vout cable meanwhile connect one 5K resistance to 24+

Function and application

4.1 Function

The main functions of LSD1XX A series products are distance measurement, input setting, and comprehensive judgment of vehicle entry and exit process and dynamic separation of vehicles by measuring vehicle width and height information. LSD1XX A series radar is connected to the upper computer through Ethernet cable, and the data graphs and measurement data can be displayed through the upper computer software.

4.2 Measurement

4.2.1 Distance measurement（Apply to LSD101A、LSD121A、LSD105A、LSD151A）

After the radar is powered on and passes the system self-test, it starts to measure the distance value of each point within the range of – 5 ° ~ 185 °, and output these values through the Ethernet interface. The default measurement data is 0-528 groups, corresponding to the distance value in the range of – 5 ° ~ 185 °, which is in hexadecimal format, and the unit is mm. For example:

Fault report
Receive data frame ：02 05 00 FE 00 FE 19 FE DB FE 01 02 F9 02 DE 02 E5 02 DE 02 E5 02 E5 02 E5 02 EC 02 EC 02 F3……..
Corresponding distance value：
Date：02 F9  02 DE  02 E5  02 DE  02 E5  02 E5  02 E5  02 EC  02 EC  02 F3。。。

Angle and distance information corresponding to data：-5° 761mm，-4.64° 734mm， -4.28° 741mm ， -3.92°734mm , -3.56°741，-3.20° 741mm， -2.84° 741mm，-2.48° 748mm，-2.12° 748mm，1.76° 755mm。。。   

4.2.2 Width and height measurement（Apply to LSD131A）

4.2.2.1 Measurement communication protocol

Illustration：

Width result：WH（ high 8 bits）、WL（ low 8 bits）

Height result：HH（high 8 bits）、HL（low 8 bits）

Parity bit：CC（XOR check from the second byte to the last second byte）

Example：

Width 2000 Height 1500：25  2A  07  D0  05  DC  24
4.2.2.2 Parameter setting protocol
The factory default settings of the product are: lane width 3500mm, minimum detection object width 300mm, and minimum detection object height 300mm. The user can modify the sensor parameters according to the actual situation. If the sensor is set successfully, a group of status data with the same format will be returned. The specific format of the instruction is as follows

Illustration：
Lane width：DH（high 8 bits）、DL（ low 8 bits）
Min detection object width：KH（high 8 bits）、KL（low 8 bits）
Min detection object height：GH（high 8 bits）、GL（low 8 bits）
Parity bit：CC（XOR check from the second byte to the last second byte）
Example：
Setting：45  4A  A1  13  88  00  C8  00  C8  70（5000mm，200mm，200mm）
Query：45  4A  AA  E0
Response 1：45  4A  A1  13  88  00  C8  00  C8  70（A1：When the parameter is modified）
Response 2：45  4A  A0  13  88  00  C8  00  C8  71（A0：When the parameter is not modified）

Installation

8.1 Installation precautions
● In the outdoor working environment, the lnd1xx should be installed with a protective cover to avoid the internal temperature of the sensor rising rapidly due to direct sunlight。
● Do not install the sensor with over vibrating or swinging objects。
● Lnd1xx shall be installed away from the environment with moisture, dirt and danger of sensor damage。
● In order to avoid external light source such as sunlight, incandescent lamp, fluorescent lamp, strobe lamp or other infrared light source, such external light source shall not be within ± 5 ° of the detection plane。
● When installing the protective cover, adjust the direction of the protective cover and ensure it is in face of the lane, otherwise it will affect the accuracy of measurement
● The rated current of single radar power supply shall be ≥ 3A（24VDC）。
● The same kind of light source interference shall be avoided. When multiple sensors are installed at the same time, the following installation methods shall be followed
a. Install isolation plate between adjacent sensors。
b. Adjust the installation height of each sensor so that the detection plane of each sensor is not within ± 5 degrees of each other’s detection plane。
c. Adjust the installation angle of each sensor so that the detection plane of each sensor is not within ± 5 degrees of each other’s detection plane。

Trouble codes and troubleshooting

Trouble codes

9.2 Troubleshooting

9.2.1 Parameter configuration fault

Reconfigure the working parameters of the radar through the upper computer and transmit them to the machine。

9.2.2 Front lens cover fault

The front mirror cover is an important part of LSD1xxA. If the front mirror cover is polluted, the measurement light will be affected, and the measurement error will be large if it is serious. Therefore, the front mirror cover must be kept clean. When the front mirror cover is found dirty, please use a soft cloth dipped with neutral detergent to wipe in the same direction. When there are particles on the front mirror cover, blow them off with gas first, and then wipe them to avoid scratching the mirror cover.

9.2.3 Measurement reference fault

The measurement reference is to verify whether the measurement data is valid. If there is a fault, it means that the measurement data of the machine is not accurate and cannot be used any more. It needs to be returned to the factory for maintenance.

9.2.4 Motor fault

Failure of the motor will cause the machine to fail to scan for measurement or result in inaccurate response time. Need to return to factory for maintenance。

9.2.5 Communication fault

Check the communication cable or machine failure 

9.2.6 Output fault

Check the wiring or machine failure

Appendix II ordering information