SANKOE SKD-20S Laser Distance Sensor User Manual

SANKOE SKD-20S Laser Distance Sensor

Product Information

Specifications

• Measuring Range: 0.2m to 20m
• Measuring Accuracy: 1mm
• Laser Class: 2
• Laser Type: 635nm, 1mW
• Laser Beam Diameter:
  • At 10m distance: 6mm
  • At 20m distance: 12mm
• Measuring Mode:
  • Trigger Measuring: Yes
  • Continuous Measuring: Yes
• Operation Mode: Commands by computer
• Output Mode: RS232 serial digital output
• Power Supply: DC 9~24V/1A 3W
• Temperature Range:
  • Storage: -25~70°C
  • Operating: -10~50°C
• Dimension: 70.8 x 50 x 40mm
• Weight: 160g

Product Usage Instructions

Definitions of Connection Cable

The SKD-20S Laser Distance Sensor comes with a connection cable that allows it to communicate with other devices. Ensure the correct cable is used for proper functionality.

Operating Steps

To operate the sensor:

1. Connect the sensor to a power source within the specified voltage range.
2. Send commands from a computer to trigger or continuously measure distances.
3. Ensure the sensor is positioned correctly for accurate measurements.

Inputs and Outputs

Communication Setting
Adjust communication settings on the sensor to match the requirements of the connected devices for seamless data transfer.

Input Data Format
Understand and configure the input data format based on the data requirements of the connected devices.

Output Data Format
Familiarize yourself with the output data format to interpret the distance measurements accurately.

Troubleshooting

Factors Affecting the Measurement Range
Be aware of factors such as target properties and environmental conditions that can impact the accuracy and range of measurements.

Error Code Display
If errors occur, refer to the user manual for error code meanings and troubleshooting steps to resolve issues.

Frequently Asked Questions (FAQ)

• Q: Can the laser distance sensor be used outdoors?
  A: Yes, the sensor has high waterproof and dustproof performance with an aircraft-grade aluminum alloy shell, making it suitable for outdoor use.

• Q: What is the highest operating temperature for the sensor?
  A: The highest operating temperature is 40°C when the sensor works in continuous measuring mode.

Version 3.1 Getting more info & supports from http://www.top1sensor.com

Please read the user manual carefully before using our products and avoid looking directly at the laser during operation

Overviews

SANKOE.LTD is a professional manufacturer from China that provides high- performance laser distance sensors and customized service. Top1senser.com is our official website for online business. The laser distance sensor SKD-20S is a new kind of our laser distance-measuring instrument. It is characterized by high accuracy, long detection range, fast measuring speed and competitive cost. The product has been widely used in many fields including robot& drone positioning, tunnel & elevator detection and other industrial applications

Laser distance sensor

Features

1. Long detection range (0.2 to 20m)
2. High measuring accuracy (typical precision: ±2mm)
3. Fast to install Using 8 screws can be quickly and firmly installed
4. Easy to operate Automatic measurement by simple commands from a computer
5. Safety in use Laser class 2, harmless to the human body (avoid direct eye exposure)
6. Kinds of output type RS232/485 serial data output
7. Long-life and high reliability with good protection High waterproof and dustproof performance with aircraft-grade aluminum alloy shell (the highest level is IP67)
8. Fully customized service based on 15+ years of industry experience

Specifications

Laser beam diameter approx.

-at 10m distance

-at 20m distance

| ****

6mm 12mm

Measuring mode

-trigger measuring

-continuous measuring

| ****

yes yes

Operation mode| commands by computer
Output mode| RS232 serial digital output
Power supply| DC 9~24V/1A
---|---
Power consumption| ＜3W
Temperature range

-storage

-operating

| ****

-25℃~ 70℃

-10℃~50℃ ②

Dimension| 70.8 x 50 x 40mm ③
Weight| 160g

1. Use a target plate to increase the measurement range during daylight or if the target has poor reflection properties.
2. The highest operating temperature is 40℃ when the sensor works in continuous measuring mode. The lowest operating temperature is -25℃ with specially customized edition sensor.
3. The details of the dimensions are shown in the following image.

Using Instructions

Definitions of connection cable

• Redline —— VCC
• Black line —— PGND
• Yellow line —— TX
• Green line —— RX
• White line —— Signal GND

Operating Steps

1. Connect the sensor to a serial port of the computer (or other device that has serial ports), then connect to a power port of the adapter with a special data cable.
2. Single Measuring Mode
3. Send a command “O” (ASCII) by computer to turn on the sensor. The sensor will emit a laser beam prepared for work, and return the data “ – – – ” (ASCII) to the serial interface.
4. Send a command “O” (ASCII) again to the sensor to start to measure distance. The sensor will return the measured data like “ XXXXX” (ASCII) to the serial interface and turn off the laser beam when it finishes a single measurement.
5. Send a command “U” (ASCII) to turn off the sensor.
6. Continuous Measuring Mode
7. Send a command “O” (ASCII) by computer to turn on the sensor. Then the sensor will turn on the laser and prepare for working, returning the data “ – – -” (ASCII)to the serial interface.
8. Send a command “C” (ASCII) to the sensor. The sensor will begin to measure continuously after 2 seconds when it got the order and return the data continuously like “ XXXXX” (ASCII). If the sensor can’t get any available data, it will return “ – – -” to the serial interface.
9. Send a command “U” (ASCII) to turn off the whole sensor (including both of laser unit and measuring unit).

Inputs and Outputs

1. Communication Setting
   Baud rate: 9600 bps, Parity bit: None, Data bits: 8, Stop bit: 1

2. Input data format
   There is only one byte in each input data pack. Users could send different commands to the sensor for different purposes, the functions of the command are shown in the following table.HEX| 0X4F| 0X43| 0X55
   ---|---|---|---
   ASCII(Capital

letter)

| O| C| U
Functions of

command

| Power On &

Trigger Measuring

| Continuous

Measuring

| Power Off
3. Output data format
Digital output data is displayed by ASCII code, there is 7 bytes in every data frame. The frame header is 0XFF, and the next bytes meant measured distance numbers (unit: mm). A: hundreds of thousands, B: tens of thousands, C: thousands, D: hundreds, E: tens, F: ones. (Notice: If any byte in a data frame is not used, the sensor will return 0X20 in that byte.)Header| A| B| C| D| E| F
---|---|---|---|---|---|---
0XFF| hundreds of thousands| tens of thousands| thousands| hundreds| tens| ones

The mapping table of HEX and number codes

For example, if the measured distance data is 3456mm, then the sensor will return data as” 3456″ (HEX: FF 20 20 33 34 35 36). Or the measured distance data is 123456mm, then the sensor will return data as “123456”(HEX: FF 31 32 33 34 35 36). If the sensor couldn’t get any available data (out of measurement range or measured in the blind zone), it will return “ – – – -”(HEX: FF 20 2D 2D 2D 2D 20) to the computer.

Troubleshooting

Factors affecting the measurement range

Effect Factors

|

Increase measuring range

|

Decrease measuring range

---|---|---

Surface of target

|

Bright and smooth surface with good reflection, like target plate

|

Deep color and rough surface, like green or blue target surface

Air visibility

|

Clean air

|

Dust, fog, storm and rain, snow

Ambient light

|

Dark environment

|

Target exposure to strong light, like sunlight in midday

Laser emission

|

Laser emission lens and protection glass keep clean

and smooth

|

Laser emission lens and protection glass get dirty or

scratched

• A laser distance sensor is a new of non-contact optical measuring equipment. Its measuring range and accuracy will be affected by many external environmental factors. So actual measuring result might be different with typical value which is measured in standard environment. The following factors will effect the actual measuring range
• In conclusion, the best measuring result will be happen in a dark environment and with a good reflection target. We strongly suggest using a target plate when laser distance sensor works in a poor environment. We also suggest to keep laser emission lens and protection glass clean with a soft cloth before start to use.

Error code display
All of error codes are displayed as “E 2XX”(HEX: FF 45 20 XX XX XX). The following errors can be corrected.

E 255(FF 4520 32 3535)

| Received signal too

weak, time for a measurement too long.

|

Use a target plate

E 256(FF 4520 32 3536)

| Received signal too

strong

| Use target plate(gray

side)

E 257(FF 4520 32 3537)

| Faulty measurement, too

much background light

| Use target plate(brown

side)

Contact Us Xi’an Zhizun International Trade Co., LTD.
Xi’an SANKOE Optical Electronic CO., LTD. Tel: +86-29-87858956, +86-29-82252810 Mobile: 86-15353715490 Mr. Yang E-mail : contact@top1sensor.com Add: No.299, Jinhua North Road, Xi’an, China Getting more info & supports from http://www.top1sensor.com

References

• laser distance sensor-Xian Zhizun International

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