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Digital output RS232/RS485 communication port distance measurement sensor
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Product Details
| Place of Origin | Shaanxi, China | Brand Name | FORESIGHT | |
| Model Number | FST-20 | Size | 28*57*80mm | |
| Measurement Accuracy | ±1mm | Measurement Range | 0.05-20m |
Product Description
Applications:
1. Road traffic
2. Automotive anti-collision
3. Construction survey and design
4. Levelmaterial level detection
5. Robot arm control
6. Fixed length control of container crane spreader
7. Security monitoring
8. Military applications
Power Supply | +6V-32V |
Measurement Accuracy | +/-1mm* |
Measurement rage(no reflector | 0.05-40m |
Measurement time | 0.05-0.5s |
Laser Grade | Ⅱ |
Output Mode | RS232 ,RS485 Communication port |
Laser type | 635nm,<1mw |
Dimensions | 28*57*80mm |
Weight | 120g |
Operation temperature | -10 C°~40 C° |
Storage temperature | -25 C°~60 C° |
Protect Grade | IP54 or IP67 |
* Under the condition of bad measurement(for example if the ambient light is too strong. The point measured diffuse reflection coefficient is too big or too small, measurement accuracy has big error:±1 mm+40PPM).
** Under the condition of strong sunlight or target reflection is bad, please use the board.
Note: if you need RS485 Bus, which can connect 250nos of laser distance sensor at the same time
1.Cable connecting definitions
Red Line------VCC 5VDC or 9-24VDC
Black Liine-----GND
White Line-----RX,
Green Line----TX;
Yellow Line------SGND;
Kindly Prompt: If need to DB9 Female head, so RX,TX and G will be corresponding to connection to Second, Third and Fifth base pin of DB9 head separately.
Demo Software:
Communication:
- Uart: 19200, 8N1
- Send command of “O”: turn on the laser
- Send command of “C”: turn off the laser
Send command of “D”: measure distance and return the results
NOTE: If the laser sensor has any quality problem while using. Please contact the supplier for technical support, please don’t repair or disassemble by yourself, Thanks for your cooperation!.
Demo Software:
· Uart: 19200, 8N1
· Send command of “O”: turn on the laser
· Send command of “C”: turn off the laser
· Send command of “D”: measure distance and return the results
· Send command of “S”: return the module temperature and supply voltage
Frequently Asked Questions (FAQ)
On what kind of targets can be measured?
All opaque targets can be measured. Reliable measurements on transparent targets are not possible.
How is the measurement rate influenced?
The measurement rate is influenced by the target. If the laser light is well reflected by the target, fast measurement rates can be achieved (up to 0.15s in tracking mode).
Does dust influence the measuring process?
If dust overcasts the main part of the laser beam, then your
measurement will be influenced in a negative way. However, this situation can only be found in extreme dusty environment like cement hopper etc.
Is it possible to measure to a moving target?
Yes it is possible. The measured distance is the mean value between the distance at start and end of the measuring process.
What is the Measuring Accuracy?
The measuring accuracy corresponds to the ISO-recommendation ISO/R 1938-1971 with a statistical confidence level of 95% (i.e. ±twice the standard deviation, refer to diagram right. The typical measuring accuracy relates to average conditions and is ±1.5mm for the DLS(H) 15 and ±3.0mm for the DLS(H) 30. This is valid for the tracking mode.
The maximum measuring error relates to unfavorable conditions such as:
- highly-reflecting surfaces (e.g. reflector tapes)
- operating at the limits of the permitted temperature range, adaptation to ambient temperature interrupted
- very bright ambient conditions, strong heat shimmer
The maximum measuring error can be up to ± 2 mm for the DLS(H) 15 and ± 5 mm for the DLS(H) 30.
The DLS-A devices do not compensate changes of the environment conditions. If the environment conditions differ from 20°C, 60% rel. humidity and 953mbar air pressure, the accuracy can be influenced if the measuring distances is longer as 150m.
The effects caused by environment condition are described in:
B.Edlen: “The Refractive Index of Air, Metrologia 2”, 71-80 (1966)
Is the Laser Light eye safe?
Class II lasers are low power (< 1mW), visible light lasers that could possibly cause damage to a person's eyes. Some examples of Class II laser uses are: classroom demonstrations, laser pointers, aiming devices and range finding equipment. If class II Laser beams are directly viewed for long periods of time (i.e. > 15 minutes) damage to the eyes could result. Avoid looking into a Class II Laser beam or pointing a Class II laser beam into another person's eyes. Avoid viewing Class II laser beams with telescopic devices. Realize that the bright light of a Class II Laser beam into your eyes will cause a normal reaction to look away or close your eyes. This response is expected to protect you from Class II Laser damage to the eyes.
Can I connect the DLS device to a Siemens PLC?
Yes, you can connect a DLS device with the RS422 interface to a Siemens S7 PLC. Please find a detailed example in the application section. (AN2010)
Contact Us
- Xi'an Foresight Electronics Technology Co., Ltd.
- Contact nameJack Lee Chat Now
- Phone86-29-87858986
- AddressRm. 11308, Floor 13, Unit 1, Bldg. 1, No. 9 Mansion, North Of Nanerhuan, East Of Yanta Road, Beilin Dist.
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