M Labs Technologies PL01 Wireless Communication Device User Manual

M-Labs Technologies, LLC Wireless Communication Device

User Manual

© 2018 M-Labs Technologies 1 / 14
User Manual
For the
PM-L
LTE CAT 1/3G Wireless Tracking Device
August 2018
R1.0
Author
Revision
Changes
Date
The information presented in this document is strictly confidential and contains trade secrets
and other confidential information that are the exclusive property of M-Labs Technologies
© 2018 M-Labs Technologies 2 / 14
1.0
Initial version
2018 Aug 3
1.1
Updated start up banner and edits
2018 Aug 7
© 2018 M-Labs Technologies 3 / 14
Contents
1 Introduction ............................................................................................................... 4
2 Hardware Design ........................................................................................................ 5
2.1 Basic Hardware .................................................................................................. 5
2.2 Certification and Safety ....................................................................................... 7
3 Software Features ....................................................................................................... 8
3.1 Basic Software.................................................................................................... 8
3.2 Remote Update ................................................................................................... 8
3.3 Auto Execute...................................................................................................... 8
3.4 Power Modes...................................................................................................... 9
3.5 Report ............................................................................................................... 9
Report Queuing .......................................................................................................... 9
Ack’ed Mode ........................................................................................................... 10
Event Report Format ................................................................................................. 10
3.6 Reset ............................................................................................................... 10
Context Preservation ................................................................................................. 10
3.7 Startup Banner ...................................................................................................11
4 Test Method ..............................................................................................................11
4.1 Hardware ..........................................................................................................11
4.2 Software Test.....................................................................................................11
5 Mechanical Structure(mm) To be Updated ................................................................... 13
6 FCC Statement ......................................................................................................... 13
7 IC STATEMENT ...................................................................................................... 14
© 2018 M-Labs Technologies 4 / 14
1 Introduction
The PM-L is a self-contained LTE CAT1/3G wireless tracking device targeting trailers. The
device combines GPS location with LTE/GSM/GPRS/WCDMA connectivity. It is primarily a
location reporting device that responds to requests (user, server) and events generated by
timers, geofences, sensors, etc. Data reports consist of a single record that contains all
location data and system status.
The device comes pre-configured and ready to use from the factory. The PM-L appears to a
user or a server application as a single endpoint device. It can be queried, updated and
configured either through a serial connection, or an over the air LTE or WCDMA IP
connection, or through SMS messaging. The PM-L presents itself over these connections as
an enhanced cellular modem with attached functional elements. These elements include:
GPS location engine
2 General Purpose Bidirectional I/O (GPIO) pins
1 Tamper
1 1-Wire Bus Interface
3.3V Power out for Peripheral Sensors
Serial UART port
Input voltages and Battery Voltage monitor
Timers
Watchdog lockup protection
Motion detection
Power Management
Access to these elements and general-purpose interfaces is done through an extended AT
command set. Configuration parameters are stored to flash memory and are automatically
used on the next power up event. For more details, please reference the AT Command
document.
This device is designed based on the Quectel EC21-A (4G LTE CAT 1/3G fallback,)
baseband module. Antennas for cellular and GPS are internal to the device.
© 2018 M-Labs Technologies 5 / 14
Figure 1
2 Hardware Design
2.1 Basic Hardware
Items
Baseband Module
Air Interface
Frequency
Antenna
UIM requirement
GPS Antenna
Power Inputs
Interface
Voltage/Battery Monitor
Build in battery manager
Dedicate Timers
Watchdog
PM-L
LTE
Network
批注 [GE1]: Update image with LTE
Network, PM-L device name, and
change car to trailer image.
© 2018 M-Labs Technologies 6 / 14
Motion Detect
LED
Battery
Working Time
Power switch
Power Cable color
Power Cable connector type
Power Consumption
The PM-L provides support for specialized hardware features through extended AT
commands. The features supported include the following.
GPS
GPS location functionality is provided by the device GPS receiver. NMEA GPS records can
be extracted in real time from the unit via the UART connection using special debug
commands that are outside the scope of this document.
GPIO
The GPIO pin, is presented to the external environment on the main connector. It is a general
purpose bidirectional line capable of providing system interrupts to generate a report or drive
logic levels to external devices. This line is 3.3V logic level input or output with transient
voltage protection and internal pull-up resistor. GP1 is intended to use for a Door open sensor.
LED’s
Three LED status indicators are provided to verify correct installation and operation. The
status LEDs are color coded and directly convey the status of the cellular and GPS
subsystems as described in the table below. Their valid operation also indicates operational
status and power.
LED
Function
Status
Red
GPS
On: GPS satellites acquired and Locked
Flash Slow: GPS satellite search is in progress
Off: No power or GPS subsystem fault
Green
GSM/GPRS
Connection
On: Indicates GPRS connection is made
Flash Slow: GPRS subsystem initialized but no connection
Flash Fast: GPRS initialization in process
Off: No power or GSM subsystem fault
Orange
battery
charging
Orange LED is Flashing to indicate charging
The PM-L provides user control allowing the LEDs to be extinguished once installation is
verified. This feature reduces power and further conceals the PM-L from untrained parties
© 2018 M-Labs Technologies 7 / 14
wishing to defeat its operation.
UART
A UART is provided for AT command and data interaction and optionally for connection to
peripheral sensors
Relay Driver
A 500mA sink capable output pin is provided. This pin is meant to drive a relay coil indented
to operate a door opening device.
1-Wire Bus Interface
The 1-Wire bus interface can be connected to sensors that support the 1-wire serial protocol
such as Temperature sensors or driver identification.
3.3V Power Out
3.3V Power output is available to power peripheral sensors such a cargo sensor. The power is
turned on only when the peripheral sensor is being read to save power.
Input Voltage and Battery Voltage Monitor
The Input Voltage monitors and battery voltage monitor are internal analog inputs scaled such
that the DC value of the voltage input pin to the PM-L system and internal battery voltage is
measured. This value is scaled to span the most significant 8 bits of the A/D and consequently
covers a scale from 0 to 32V for Input Voltage and 0 to 9V for internal battery voltage
Timers
Timers resident on the baseband chip generate periodic interrupts for power down wakeup,
watchdog support, report generation and other timer related functions. Report timers are
supported by related AT command and cause generation of periodic reports.
Watchdog
The Quectel EC21-A chipset provides internal software Watchdog. Also the PM-L includes
an MCU that acts as a failsafe external watchdog.
Motion Detect
Configurable through AT commands the unit can go to a low power mode when the main
power is removed until motion is detected. Upon wakening, a report can then be generated,
and the GPS enabled to detect drive events.
2.2 Certification and Safety
Items
Requirement
Drop Design
1.2meter 6 direction standard drop test
Temperature Range
-20 to 65C Operation
-40 to +85° C Storage
批注 [GE2]: To be updated…but do
we really need this detail? Can we
delete this section?
© 2018 M-Labs Technologies 8 / 14
Humidity:
20% to 90% Operation
10% to 95% Storage
Altitude:
-500 to +18,000m
Vehicle ISO Test
ISO 7637-2-2004; ISO 7637-3-2007; ISO 10605-2008;
ISO 16750-2-2010
FCC Certification
FCC 47 CFR Part 15 ,Part 2, Part 22, Part 24, Part 27
Others Operator Requirement
Industry Canada/ PTCRB
ESD Requirement
10KV non-Conductive
3 Software Features
3.1 Basic Software
Items
Requirement
Network Interface
CAT 1 LTE: B2, B4, B12, WCDMA: B2, B4, B5
IP Stack
Ipv4/IPV6
Upgrade Method
Remote update / PC tool
Remote Update
Supported
Power Modes
Supported
AT Command
Supported
Report
Supported；3000 records
Driver
GPIO，LED，GPS，UART，3.3V out
GPIO
Interrupt for Door Open Detect
LEDs
GPS Status, Cellular Status, Power State
Watch Dog
Supported
Reset
Soft reset
Startup Banner
Supported
3.2 Remote Update
The PM-L supports OTA field upgrades of the resident application. An over the air TFTP
(Trivial File Transfer Protocol) connection is made over an IP connection. A replacement file
is then transferred from a server to the PM-L and that file replaces the previous application
image.
3.3 Auto Execute
The Auto Execute Utility copies the contents of file system.exf into system executable RAM
and executes it from there. This file is the factory default application. Another file named
custom.exf can be loaded into the file system.
Auto Execute will look first for a file named update.exf and load and execute that in place of
custom.exf if it exists. If update.exf executes successfully, the previous copy of custom.exf is
deleted from the file system and update.exf is renamed to custom.exf.
批注 [GE3]: To be updated.
© 2018 M-Labs Technologies 9 / 14
3.4 Power Modes
The PM-L device supports several power modes that are set by the power mode command. In
full power mode the GPS is active and the cellular subsystem will maintain a persistent
cellular connection whenever service is available. IP connection is maintained according to
the configuration of the device.
The device can be put into several levels of low power mode whenever it runs on the internal
backup battery, or if the external input voltage is low or if it is not moving depending on how
the unit is configured through AT commands.
Power Mode
Cellular
GPS
Full Power (Track)
On
On
Listen
On
Off
Stealth
Off
Off
The device would return to full power whenever an event occurs that triggers a report. Those
events include:
Report timer
GPIO change
IP change
Battery threshold
Heartbeat
Watchdog
Power-up
Motion Detected
Any hardware or software reset will return the device to full power mode.
3.5 Report
The PM-L captures data and forms a report record with that data. A report is a data structure
containing all of the sensory and other typically useful data on the device. Reports are
generated in response to specified events, such as periodic timeout, speed threshold,
geo-fence crossing, etc., or in response to a Report Now command.
Report Queuing
If a report trigger occurs while UDP connection is unavailable, it will be queued until
connection becomes available and transmitted at such time. The only way report(s) can be lost
is if too many reports are queued and the report-queue is overflowing. In such case the earliest
report(s) will be discarded. The size of the queue can be configured via the Report Queue
command.
© 2018 M-Labs Technologies 10 / 14
Ack’ed Mode
UDP is not a 100% reliable connection and occasional reports or command/responses may be
lost. Since all commands have responses, the server can repeat any command to which there
is no response. In order to assure reliable reception of reports, Arsenal devices can be
configured either in Normal or Ack’ed mode to send the reports. In the Normal mode the
reports are simply sent “as is” with no acknowledgment from the server. In the Ack’ed mode
every report sent is expected to be acknowledged by the server by sending back an ACK
message back. If acknowledgement is not received within the specified timeout, the report is
re-sent. If the report is not acknowledged after the specified number of attempts, it is queued.
If acknowledgement is received after the report is queued (i.e. past timeout of the last attempt),
it is ignored.
Report is not considered “complete” until its acknowledgement is received. Thus, if report X
is sent and report X+1 is triggered while waiting for acknowledgement of X, report X+1 will
be queued until such acknowledgement is received and only then sent. The Arrow will
attempt to re-send queued report(s) every time a new report is triggered. If there is more than
one report queued, the reports will attempt to be sent in the order of triggering and only once
the report is acknowledged, the next report is attempted. This assures that reports are sent and
received in order.
Ack’ed mode assures that all reports are received, but adds overhead in time and data. Report
that is not acknowledged is sent again and eventually will be queued and sent again. The
number and frequency of re-tries is configurable via the Report Acknowledgement command.
Event Report Format
Reports can be generated in either an ASCII representation of hex or as actual binary encoded
hex. The reporting format is selected via Report Format command. Note that while the logical
content of the report is the same in both representations, the size for an ASCII report is twice
the size of actual numbers of bytes compared to binary representation.
3.6 Reset
There are a number of resets available on the device. Soft reset resets the baseband only by
using an internal watchdog, while hard reset power cycles the whole device. There is also an
option to reset the GPS sub-system only.
Context Preservation
When a reset is caused by the Network Watchdog or by the Reset command (modes 0,1), the
context of the system is being preserved and is restored after the reset. The context includes
all the periodic timers, the report queue, the odometer, etc. This allows to reset the unit as a
troubleshooting measure either periodically or due to Network Watchdog without losing
reports that are already in the queue or are pending on running timers. Note that the reset
process may cause 1-2min of inaccuracy in the timers and should not be considered as very
precise.
© 2018 M-Labs Technologies 11 / 14
3.7 Startup Banner
After a reset a startup banner is printed through the UART only. The format and content of
the banner shown below:
PROD: PUMA-L
IMEI: 353782069100085
ICCID: 89014103279453385701
MDL: 3025R01
BIN: EC21AFAR05A04M4G
APP: 3.3.9
IO: 1.1.11
CFG: 0025 Puma/Jaguar-LTE/3G-ATT
IP: "54.186.180.122",15030
LPORT: 17006
APN: 11583.mcs
SIM: READY
4 Test Method
4.1 Hardware
Test Item
Description
Baseband Function Test
• Power Input Test
• Power Consumption and Current Test
• Heat Dissipation Test
• UART Stability Test
• GPIO Level Test
• LED Stability Test
• Drop Down Test
• ESD Test
• High/Low Temperature Test
• Humidity Test
RF Test
• RF Performance Test
• GPS Performance Test
• Antenna Performance Test
4.2 Software Test
Test Environment Construct
Message Test environment
1. USB dongle and PC as message server
2. Send message to PM-L
UDP Test environment
1. Connect dongle to PC and create dialup as ip server
2. PM-L create IP connection to server
© 2018 M-Labs Technologies 12 / 14
UART Test environment
1. Connect PM-L to pc with com serial cable
2. Open Terminal tool and send at command
3. Response can be shown at terminal window
© 2018 M-Labs Technologies 13 / 14
5 Mechanical Structure(mm) To be Updated
6 FCC Statement
RF Exposure Warning Statements:
The antenna(s) used for this transmitter must be installed to provide a separation distance of
at least 20 cm from all persons and must not be co-located or operating in conjunction w ith any
other antenna or transmitter.
This equipment has been tested and found to comply w ith the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates
uses and can radiate radio frequency energy and, if not installed and used in accordance w ith
the instructions, may cause harmful interference to radio communications. How ever, there is
no guarantee that interference w ill not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, w hich can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the follow ing measures:
-- Reorient or relocate the receiving antenna.
© 2018 M-Labs Technologies 14 / 14
-- Increase the separation betw een the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to w hich the receiver is
connected.
-- Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equip ment.
This device complies w ith part 15 of the FCC Rules. Operation is subject to the follow ing tw o
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
7 IC STATEMENT
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject
to the following two conditions: (1) this device may not cause interference, and (2) this device
must accept any interference, including interference that may cause undesired operation of the
device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne
doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
In order to avoid the possibility of exceeding the IC radio frequency exposure limits, human
proximity to the antenna shall not be less than 20cm (8 inches) during normal operation.
Afin d'éviter la possibilité de dépasser les limites d'exposition aux fréquences radio de la IC
CNR102, la proximité humaine à l'antenne ne doit pas être inférieure à 20 cm (8 pouces) pendant
le fonctionnement normal.

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