User's Manual

Wisen Innovation Technical Doc. No.2021 WiSenMeshWAN® 4-Channel Laser Distance Sensor Node - User Manual
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5.3．Mounting Options
The node fixings must be rigid for the sensor to measure accurate data. Movement in the fixings will affect the
readings.
6. General Maintenance and Notification
1) Once a node is installed in the field, please minimise any man-made disturbance so that data quality
can be maintained;
2) Radio communication will be impaired if the antenna is covered by metal or very moist soil material;
3) Due to the discharge characteristics of the recommended battery, a battery replacement should be carried out
when a node reported voltage reaches 2.7V, at which point you have approximately 3 weeks to change the
battery;
4) Our product will use all the possible capacity in a battery down to a stop (minimum) voltage, which has been
specified in the Features table. When this occurs, our WISENMESHNET protocol will send you a warning then it
will enter a deep sleep mode until a new battery is installed;
5) If the data from nodes are shown unexpected results or are not being sent back to the Wisen gateway, then please
carry out investigation using the following two stage procedure:
A. Remote Inspection of historical data, to identify the following:
a) Whether the heart-beat message has been sent back successfully at each time interval;
b) Whether the battery voltage is too low, if yes, please change the battery unit;
c) Whether the signal strength has become significantly weaker than it was previously. If yes, please
check the antenna has been screwed on firmly.
B. On-site Inspection: If all the above are good, please arrange an on-site inspection to check:
a) Whether a node has visible external damage;
b) Check the box lid to see if it is firmly tightened;
c) Whether the antenna is bent or damaged and that the node is not blocked by new construction, e.g.,
hoardings;
d) When it is possible, check that the signal strength is normal by using a spectrum analyser;
e) Open the lid, to see whether the battery is firmly attached to its holder;
f) Use a multi-meter to measure the battery voltage. If it is below the stop (minimum) voltage, replace