SANKOE SKD-40D Laser Distance Sensor User Manual

SANKOE SKD-40D Laser Distance Sensor

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 who provides high performance laser distance sensor and customized service. Top1senser.com is our official website for online business.

Laser distance sensor SKD-40D 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& drones positioning, tunnel & elevator detection and other industrial applications.

SKD-40 Laser distance sensor

Features

1. Long detection range (0.2 to 40m)

2. High measuring accuracy (typical precision: ±2mm)

3. Fast to install
   Using 8 screws can be quickly and firmly installed

4. Easy to operating
   Automatic measurement by simple commands from computer

5. Safety in use
   Laser class 2, harmless to the human body (avoid direct eye exposure)

6. Kinds of output type
   RS232/485/TTL serial data output
   4~20mA/0~5V/0~10V analog current/voltage output
   Two-way switch output based on thresholds set by users

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 industry experience

Specifications

Laser beam diameter approx.
-at 10m distance
-at 50m distance| 6mm
30mm
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℃ to 70℃
-10℃ to 50℃②
Dimension| 110.8 x 50 x 40mm③
Weight| 210g

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 sensor works in continuous measuring mode. The operating temperature from -30℃ to 50℃ or – 30℃ to 70℃ can be customized.
3. The details of dimension are shown in the following image.

A： Top view
B： Back view
C： Front view

Using Instructions

Definitions of connection cable

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

Operating Steps

1. Connect sensor to a serial port of computer (or other device which has serial ports), then connect to a power port of adapter with special data cable

2. Single Measuring Mode
   Send a command “O” (ASCII) by computer to turn on the sensor.
   Then sensor will emit a laser beam and prepare for working, and return the data “ – – – ” (ASCII) to the serial interface.
   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 laser beam when it finished a single measurement.
   Send a command “U” (ASCII) to turn off the sensor.

3. Continuous Measuring Mode
   Send a command “O” (ASCII) by computer to turn on the sensor.
   Then the sensor will turn on the laser and prepare for working, return the data “ – – -” (ASCII)to the serial interface.
   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 couldn’t get any available data, it will return “ – – -” to the serial interface.
   Send a command “U” (ASCII) to turn off the whole sensor (include both of laser unit and measuring unit).

Inputs and Outputs

Communication Setting

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

Input data format

There is only one byte in each input data pack. Users could send different commands to the sensor for different purpose, the functions of command are shown in the following table.

Power Off

Output data format

Digital output data is displayed by ASCII code, there is 7 bytes in every data frame.
The frame header is 0XFF, 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.)

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 blind zone), it will return “ – – – -”(HEX:FF 20 2D 2D 2D 2D 20) to the computer.

Troubleshooting

Factors affecting the measurement range

Laser distance sensor is a new of non-contact optical measuring equipment. Its measuring range and accuracy will be effect 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 actual measuring 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

In conclusion, the best measuring result will be happen in a dark environment and with a good reflection target. We strongly suggest to use 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 using.

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.

side)
E 257(FF 4520 32 3537)| Faulty measurement, too much background light| Use target plate(brown side)
E 258(FF 4520 32 3538)| Outside of the range of measurement| Select measurement distance within the range of measurement
E 260(FF 4520 32 3630)| Laser beam interrupted| Repeat the measurement

Contact Us

Xi’an Zhizun International Trade Co., LTD
Xi’an SANK Optical Electronic CO.,LTD.
Tel: +86-29-87858956 , +86-29-82252810
Mobi: +86-15353715490 Mr. Yang
E-mail: top1sensor@hotmail.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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