Wireless Vibration & Temperature Sensor Operation

northstar · April 27, 2025, 4:19pm

Eduardo,

Following-up on the previous message, it seems like the sensor goes to sleep mode, even when the sleep mode is not checked; and to reactivate the sensor we need to get it close to the gateway. Is this typical? How do we ensure that the sensors are working reliably in the field? We will not be able to physically reset each unit.

Please advise. Thanks.

Eduardo_Mtz · April 28, 2025, 2:30pm

Hi Alex, let me confirm:

Is the antenna connected on the Enterprise IIoT Gateway?
What was the distance between the sensor and the gateway when the sensor stopped transmitting data?

Thank you,
Eduardo M.

Bhaskar · April 28, 2025, 2:36pm

The sensor automatically enters sleep mode whenever it is not transmitting data. There is no way to disable this sleep mode.
if you want to get data fast –

set interval to 1 min
set smart skip value to 0
set smart threshold to 1

This will make sure sensor sends data every min but it WILL drain the battery faster.

northstar · April 28, 2025, 3:52pm

Eduardo,

Yes, all antennas are connected. The unit was approximately 100 ft away behind a couple of walls.

northstar · April 28, 2025, 3:55pm

Hi Bahskar,

While we are testing the unit, we have set the settings as you have mentioned above. That is when we have noticed the sensor drops once in a while and we need to rest it to get it going again.

Bhaskar · April 28, 2025, 4:11pm

No that should not he the case.
Can you share all your settings, we will run a test.

Also how long it runs before it stops?

northstar · April 29, 2025, 1:44pm

We are trying to send the sensor data via NCD Edge 7552 gateway using cellular service. We have setup the cellular service using Hologram and have set the APN to “Hologram” as per the instruction of the vendor. The sim card is active, the gateway has cell service and signal, however, we are unable to remotely access the gateway. We are using browser and the gateway’s IP address to access the unit without any success. Please advise if there are any other settings that we need to setup in the modem to interface with the cell service. Thank you.

northstar · April 29, 2025, 7:17pm

the gateway continues to initialize and drops cell service?/

northstar · April 30, 2025, 2:11pm

Eduardo/Bhaskar,

We continue to have issues with the sensor dropping off often. FYI, attached are screen shots of the settings. Please advise what can be done to keep this from occurring. We cannot

have this occur in the field. Thank you.

northstar · April 30, 2025, 2:11pm

northstar · April 30, 2025, 2:17pm

FYI, when the sensor is not transmitting data, the only way we have been getting he unit to work is to move it close to the gateway to reconnect. Then the sensor starts to transmit data.

Eduardo_Mtz · April 30, 2025, 2:43pm

Hi @northstar Thank you for the information. In order to try to solve the range issue, could you please make the following changes:

Uncheck the Destination Address property (by default, it is already set to 0000FFFF).
Uncheck the Network ID property (by default, it is already set to 7FFF). Keeping this enabled will put the sensors into a reboot cycle.
Uncheck the Node ID and Delay properties. For sensor type 114, you must use the Sampling Interval property instead of Delay.
Set +24 dBm (250 mW) for the Power setting — this is the maximum value for wireless transmission power. Let me ask: is there any reason you’re currently setting it to +15 dB?
Uncheck Payload Length (by default, it is already set to 180 Bytes).
Uncheck the Auto Raw Destination Address property (by default, it is already set to 0000FFFF).

After making these settings, click the Done button and then Deploy. Next, reset the sensor to apply the new settings. (Be sure the sensor is close to the gateway to ensure successful configuration.)

Could you also expand and share the 'config_results' message? This message comes from the Wireless Device node at the end of the configuration process. (I’ve attached a screenshot as reference/example. your own should be a bit different)

This is just to confirm the sensor configurations.

Please could you try this and let us know the results.
Thank you,
Eduardo M.

northstar · April 30, 2025, 4:27pm

Eduardo,

Thanks for your help. Here is a screen shot after the unit was reconfigured

.

northstar · April 30, 2025, 4:35pm

Edurado,

Looks like we have fixed the cell issue. How can we test to see if the cellular

feature works?

Eduardo_Mtz · April 30, 2025, 6:19pm

Hi @northstar a value of 77 in the rssi property indicates poor wireless signal quality.

Just to confirm, were you able to receive the Config Results message at the end of the configuration process, and did it show power: true?

Could you let me know the material of the walls between the sensor and the gateway?
Thank you,
Eduardo M.

northstar · April 30, 2025, 8:00pm

Eduardo,

I did not get any Config Result messages. The material between the sensor and modem is just wood structure walls, with sheet rock and insulation. Nothing exotic.

northstar · May 1, 2025, 6:55pm

Eduardo,

We continue to have issues with the sensor dropping and having to be brought close to the modem and rattled to get it re-started. Please let me know how we can resolve this issue. Thank you.

Bhaskar · May 1, 2025, 7:22pm

once you bring the sensor close to the gateway does it start communicating with the gateway ?

northstar · May 1, 2025, 8:04pm

Yes. We have to move the sensor close and shake. Then it starts to communicate.

northstar · May 1, 2025, 8:08pm

Also we have received the sensor scout units. However, we do not have any instructions on how ton use them. The units are not like the items shown on the website. Please provide a manual or instructions on how to use this tool to detect sensor ranges and signal strength. Thanks.