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5.2 ActiveThreshold and InActiveThreshold
Active Threshold
InActive Threshold
Example
5.3 Offset calibration
The accelerometer is a mechanical structure that contains components that can move freely.
These moving parts are very sensitive to mechanical stress, far beyond solid-state electronics.
The 0g offset or offset is an important accelerometer indicator because it defines the baseline used to measure acceleration.
After installing R718E, turn on the device and wait for the device join the network 1 minute, the device will automatically offset
the calibration.
If the device installation position moves, you need to power off the device 1 minute and restart turn on.
6. Example Application
In the case of detecting whether the motor is working normally, it is necessary to install the device in the state where the device is powered off and the
motor is stationary. It is recommended to install it horizontally. After the fixing is completed, power on the device. The device performs offset
calibration of the device after one minute of network-joining. (The device offset cannot be moved after calibration. If it needs to be moved, it needs to
be powered off for 1 minute and then re-offset calibration). The equipment needs to collect the triaxial acceleration and temperature of the target motor
for a period of time, and it is used as a reference for the setting of the static threshold, the motion threshold and whether the motor is abnormal. Assume
that the acquired Z-axis acceleration is stable at 100m/s
2
threshold is 104m/s
. The specific configuration needs to be based on actual conditions.
The configuration of the Active Threshold and the InActive Threshold can be found in the Netvox LoRaWAN Application Command document.
7. Installation
This product comes with waterproof function. When using it, the back of it can be adsorbed on the iron surface, or the two ends can be fixed to the wall
with screws.
Note: To install the battery, use a screwdriver or similar tool to assist in opening the battery cover.
8. Important Maintenance Instruction
Your device is a product of superior design and craftsmanship and should be used with care. The following suggestions will help you use the warranty
service effectively.
• Keep the equipment dry. Rain, moisture, and various liquids or moisture may contain minerals that can corrode electronic circuits. In case the device
is wet, please dry it completely.
• Do not use or store in dusty or dirty areas. This can damage its detachable parts and electronic components.
• Do not store in excessive heat. High temperatures can shorten the life of electronic devices, destroy batteries, and deform or melt some plastic parts.
• Do not store in a cold place. Otherwise, when the temperature rises to normal temperature, moisture will form inside, which will destroy the board.
• Do not throw, knock or shake the device. Rough handling of equipment can destroy internal circuit boards and delicate structures.
• Do not wash with strong chemicals, detergents or strong detergents.
• Do not apply with paint. Smudges can block debris in detachable parts and affect normal operation.
• Do not throw the battery into a fire to prevent the battery from exploding. Damaged batteries may also explode.
All of the above suggestions apply equally to your device, battery and accessories. If any device is not working properly.
Please take it to the nearest authorized service facility for repair.
Active Threshold can be changed by ConfigureCmd
Active Threshold range is 0x0003-0x00FF (default is 0x0003);
The scale factor of the threshold is 62.5 mg, and g is the gravitational acceleration at standard
atmospheric pressure.
InActive Threshold can be changed by ConfigureCmd
InActive Threshold range is 0x0002-0xFF (default is 0x0002)
The scale factor of the threshold is 62.5 mg, and g is the gravitational acceleration at standard
atmospheric pressure.
if you need to set the active threshold to 10m/s², you need to set the value to 10/9.8/0.0625=16.32.
The last value obtained is an integer and is configured as 16.
2
with an error of ±2m/s
2
, and the active threshold can be set to 110m/s
8
2
, and the static
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