does this unit has pcb antenna or flex antenna.
regarding sensor scout please reach out to travis.
Which devise? The gateway has standard external antennas. The sensor does mot have any external antennas.
Th vibration sensor.
check the top of the new sensor you just got and the old one. do they look same from a top view.
top one is with new antenna, can you run same test with this one we will send out a replacement antenna.
Will do. What is the best way to setup multiple sensors on the same gateway. I would like to test apple and apples. Please advise. Thanks.
there is no special setup. each sensor has its own mac address and it will show up on the gateway automatically.
Eduardo/Bhaskar,
We have activated the new sensor and have been testing its operation compared to the first unit. We have two issues:
1- Both sensors drop signals when there is no activity, and do not reactivate (i.e. transmit data) unless they are moved close to the gateway. The performance of the second unit appears to be improved. We have tried to collect data on regular basis over a 24 hr period and see that the first sensor stopped transmitting data after a couple of hours and never comeback on line. The second sensor sent data for approximately 5hrs, after which it stopped sending data and did not send any more data. The data pack it send were empty!
2- The gateway does not connect to internet via cerllular SIM card. The SIM card is active, and we have good signal; the status page of SIM card shows connection to the network so the APN is setup properly. We have followed of the Cellular and WWAN setup instructions and still are not connecting to the cellular service. FYI, the gateway is configured as an Access point. The WWAN connection ETH0 show to be disconnected (not sure why). The Robustal Manual says that for cellular connection the Gateway has to be in Client mode?!
Please advise. Thank you.
Alex,
Can you share the empty packet?
Thanks
Followup: FYI, here are some screen shots of the cellular connection and settings, along with sample screenshots of the data stream from the sensors. Lots of empty values!
here is a screenshot of the data stream from the new sensor. a lot of zeros?? The original sensor is showing values when in the sam condition.
For two sensors to report similar readings, all configuration settings must be identical—including sample rate (ODR) and deadband value. Keep in mind, no two sensors will ever give exactly the same values due to factors like sensor orientation, mounting position, and internal component tolerances.
If you’re seeing zero values, it’s likely because the vibration level is below the sensor’s default deadband threshold of 20 mg. Any vibration below this threshold is considered noise and reported as zero.
You can change the deadband value to 0 using Node-RED. Just ensure both sensors are set with the same deadband and ODR for consistency.
@jacob can you comment on LTE setup.
Bhaskar,
The settings for both units are the same, including the dead band values of 0 for both. Attached a
download-json7(1) (1.0 MB)
download-json8 (705 Bytes)
re the information we have been collecting. The one with single line (json8) is the data from the new unit, the second file (.json7) has more data and you can see when the unit drops-off.
Hi Alex,
Thank you for providing the data. We’ve analyzed it and found that the ODR value for your new sensor is 1600 Hz, while for the old sensor, it is 800 Hz. As @Bhaskar mentioned previously, this difference in values results in varying readings between the two sensors. To achieve similar readings, you will need to set both sensors to an ODR of 800 Hz.
Please could you try this and let us know the results.
Thank you,
Eduardo M.
Hi Alex,
Please, could you clarify whether, when you say the sensor has stopped sending data, you mean the sensor is not transmitting any sensor data packets, or that it is transmitting sensor data with a vibration value of zero?
Thank you,
Eduardo M.
Eduardo,
The file contains 800MHZ has the old data as well as new. Please refer to the latest data, located toward bottom of the file. There you will see that the old sensor has been set to 1600hz, similar to the new one.
Eduardo,
No data packet is being sent to the gateway.
Hi Alex, Could you share the complete FLY packet for both sensors? The FLY message includes the current sensor configurations into reported_config property, allowing us to verify whether the dead band and other settings are identical for both sensors. It appears that the new sensor is correctly setting the dead band to 0, while the old sensor is not.
The FLY messages originate from the Wireless Gateway node. You can force a FLY message by resetting the sensor. Here is an example of the format we are looking for:
Thank you,
Eduardo M.
here is a copy of the flow.json. In it you should be able to see all of the settings.
flows.json (50.2 KB)
Eduardo,
FYI, I have rest the unit. However, there is no FLY message, per your example, appearing on Node-Red.