Online Electronics 4003 MAGSIG, Руководство по эксплуатации

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4003_5001_D02 Page 26 of 35
4.13. LoRa
The unit has an option for LoRA communications which is provided on a PCB along with an
antenna installed at the time manufacture. The communication format, implemented by default,
communicates with the Online Electronics LoRa Base Station but can also be re-programmed by
the end user to suit their LoRa end user application.
The following describes operation using the default communication format and with the Online
Electronics LoRa Base Station.
The Online Electronics LoRa Base Station is a USB powered unit with antenna. The unit appears
as a virtual COM PORT set to 115200BAUD, No Parity, 8 Bits and 1 Stop Bit.
On PIG DETECTION the 4003 will display TRANSMITTING prior to
the DETECTION DELAY countdown whilst it is trying to
communicate with the Online Electronics LoRa Base Station.
If an acknowledgement is received from the Online Electronics
LoRa Base Station the PASSED will be displayed.
The 4003 will wait 10 seconds after transmitting a detection
message and if no acknowledgement is received after within this
time then FAILED will be displayed and the 4003 will continue with
the detection countdown (refer to Section 4.4.3 DETECTION
DELAY).
Upon PIG DETECTION (refer to Section 4.4.1 PIG PASSED), a message is transmitted via the
LoRa radio to the Online Electronics LoRa Base Station which outputs the following on its USB
virtual COM PORT in CSV format:
4003,NNNNN,S,PPPPP,EEE,BBB,RRR,VV,<CR>
Where:
NNNNN is five digit serial number of the 4003 transmitting the message
S is the pole detected at detection when the SENSOR OUTPUT is an axis and can either
be ‘N’ for north or ‘S’ for south pole. If the sensor output is set as VECTOR (refer to
Section 4.5.15 SENSOR OUTPUT) then the ‘M’ character is output in this field .
PPPPP is the peak value of flux at detection.
EEE is the event number of the detection (refer to Section 4.4 DETECTION MODE)
BBB is the battery voltage (to one decimal place) or ‘EXT’ i f the 4003 is externally
powered. The value displayed is that measured internally and not at the battery
terminals. Its main purpose is to provide a battery cut off/ shutdown when the value read
<= ~4V. The user should either routinely change the batteries or change the batteries
before this value is reached.
RRR is the Rssi value (dBm) of the received signal. Indicating the quality of the received
signal.
VV is the SNR value of the received signal. Indicating the quality of the received signal.
<CR> is the ASCII carriage return character.