SJ-PM-TFmini-S A01 Product Manual
Benewake (Beijing) Co. Ltd.
Page20
9 Malfunction: Causes and Troubleshooting
(1) Distance value occasionally will abruptly change into -1 beyond the range during normal
operation.
Cause:
The different test environments (reflectivity of detected object, disturbance of ambient light, etc.)
will affect the signal strength of TFmini-S. For a reliable and stable measurement data, the algorithm
elimination is internally used for TFmini-S. In case of the insufficient signal strength, TFmini-S will output
-1. This value is not measurement data of TFmini-S, which is only used to remind the user that such data is
unreliable.
Troubleshooting:
please use such value as the trigger signal of some unreliable data, and it will ensure that
your system can use other reliable data for further assessment and decision-making if there are some
unreliable data.
(2) Significant error between the output distant value of LiDAR and actual distance
Cause
①
:
Incorrect interpretation of the data communication protocol of TFmini-S.
Troubleshooting:
check data communication interpretation means. In case of such error, please check the
data format to adjust interpretation means.
Cause
②
：
Due to the physical principles of TFmini-S, the above phenomenon is likely to occur if the
detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent
substance (such as glass and water, etc.)
Troubleshooting:
Please avoid use of this product under such circumstance in practice.
Cause
③
:
The IR-pass filters are blocked.
Troubleshooting:
please use dry dust-free cloth to gently remove the foreign matter
(3) No data output
Cause:
The product will be strictly inspected before leaving our factory, ensuring that all the shipped
products can work normally. However, some abnormal working matters maybe still occur because of
incidents during the transportation or use.
Troubleshooting:
Check whether the power supply is normal; check whether the voltage is within rated
voltage range. If power supply is normal, there will be a red light inside the transmitting lens of TFmini-S.
Check TFmini-S with correct connection sequence and reliable connection.
Check whether the data interpretation is correct. Please carry out the interpretation as per the data format
