Astra telematics At200 User manual

AT200 Vehicle Tracking Device

User Guide

Version: 1.3

Date: February 2015

Abbreviations

ADC Analogue to Digital Converter

ASCII American Standard Code for Information Interchange (computer character set)

BLE Bluetooth Low Energy

BT Bluetooth

CAN Controller Area Network

DC Direct Current

FET Field Effect Transistor

GIS Geographic Information System

GPRS General Packet Radio Service (part of GSM)

GPS Global Positioning System

GSM Global System for Mobile communication

IP Internet Protocol (part of TCP/IP)

LED Light Emitting Diode

MEMS Micro Electro-Mechanical System

NMEA National Marine Electronics Association (defined a GPS output format)

OTA Over the Air (remote configuration of devices)

PC Personal Computer

PCB Printed Circuit Board

PDU Protocol Description Unit (describes a binary SMS format)

RFID Radio Frequency Identification

SIM Subscriber Identity Module

SMS Short Message Service

SMSC Short Message Service Centre

SV Satellite Vehicle

TCP Transmission Control Protocol (part of TCP/IP)

UDP User Datagram Protocol

WGS84 World Geodetic System 1984 (global co-ordinate system used by GPS)

Product Overview

The AT200 is low-cost vehicle tracking device, housed in a sturdy plastic enclosure. Both GPS

and GSM antennas are internal. The AT200 incorporates the very latest technology, including the

latest Cortex M3 ARM processor, SIMCom SIM800H Quad Band GSM/GPRS modem with

Bluetooth and SiRFstar IV GPS with high sensitivity and anti-jamming features. The AT200

operates from an external power feed and has a 900mAh back-up battery which allows operation

for approx. 3 hours in continuous mode. Interconnections are made with a single 16 way

connector.

Features

The main features of the AT200 are highlighted below:

Compact size

Cortex M3 ARM Processor

SiRFstar IV GPS, -163dBm sensitivity and anti-jamming feature

SIM800H QUAD band GSM/GPRS/Bluetooth modem

Internal GSM and Bluetooth antennas - PIFA PCB trace, high-sensitivity

Internal GPS antenna, 10mm ceramic patch

Low power consumption (near zero current drain when vehicle ignition is off)

Bluetooth based driver ID / authentication / authorisation

3 axis accelerometer (2/8g)

2 digital inputs

digital output

RS232 Port

Internal back-up battery, lithium-polymer, 900mAh

Configuration by RS232, SMS or TCP/UDP

Fast and reliable over the air firmware update

Supports existing device protocols for easy compatibility with existing applications

Reporting protocols support TCP or UDP

SDK available for rapid development of client customised applications

SON8 / QFN SIM option, subject to pre-order and MoQ

Approved to: CE, 2004/104/EC

Technical Specifications1

E-GSM/GPRS Modem: 2 Watts (E-GSM900 and GSM850 Class 4)

1 Watt (GSM1800 and GSM1900 Class 1)

GPRS multi-slot class 10

GSM up-link (TX):

Frequencies 824 –849 MHz, 880 –915 MHz, 1710 - 1785 MHz, 1850 –1910 MHz

GSM down-link (RX):

Frequencies 869 –894 MHz, 925 - 960 MHz, 1805 - 1880 MHz, 1930 - 1990 MHz

GPS Receiver:

L1 receiver: 48 channels

Position accuracy: < 2.5m CEP autonomous

Receiver sensitivity: -163dBm (tracking)

TTFF: Cold start < 35 sec

Warm start < 32 sec

Hot start < 1 sec

Input voltage: 7 –36 volts DC

Input Protection: Reverse polarity, overvoltage, internal self-resetting fuse

Internal Battery: 3.7V, 900mAh, lithium

Battery Life: 3 hours continuous operation

5 days operation in hourly update mode

Data transfer modes: GPRS (TCP/UDP)

Inputs/outputs: 2 digital inputs

1 digital output (low side MOSFET switch)

RS232 serial port

iButton input

Driver ID: iButton / Dallas Key 1-wire

Current consumption: TBA mA @ 13.8 VDC (typical)

< TBA mA (sleep mode - without battery)

< TBA uA (sleep mode - battery fitted)

Dimensions: 60 x 58 x 18 mm

Weight: 180g (with battery)

Ingress Protection: N/A

Temperature:

Operating -20 to +60°C

Storage -40 to +85°C

Connector: Cvilux PN CP3516P2V00

Mating Connector: Cvilux PN CP3516S0010

Product Approvals: CE, 2004/104/EC

1Specifications may change without notice.

Hardware Description

Overall Dimensions

60 x 58 x 18 mm

Back-up battery

Each AT200 is supplied with a 900mAh back-up battery, which is fixed to the PCB and connected

as shown below:

Basic electrical connections

A permanent connection to +12V/+24V vehicle power should be provided to the AT200 using the

RED and BLACK wires, via a 1A fuse. If using a wired ignition-sense, connect this to digital input

1, again we recommend the use of a 1A fuse:

i. RED +12 / +24V 1A FUSED

ii. BLACK GROUND 1A FUSED

iii. WHITE IGNITION 1A FUSED

All unused wires should be insulated to avoid undesired behaviour.

For a full table of AT200 connections please see page 7.

Power requirements

The AT200 operates from a DC Voltage between 7 and 36 Volts. We recommend that a

permanent ‘live’ power source is used to supply the AT200. If current drain is of concern, please

refer to the power management section for options to minimise vehicle battery drain when

stationary for long periods.

SIM installation

The SIM should be inserted in the slot at the rear of the device (with plastic enclosure fitted).

The image on the device gives guidance for correct orientation. Note that the AT200 powers up

when the SIM is fitted. For shipping with SIM fitted, we suggest extracting the SIM a few

millimetres to power off the device.

INSERT SIM HERE

Status LEDs

GPS Status (green): Constant ON Searching for initial fix

Double Flash @ 1Hz GPS 3D navigation

Slow Flash @ 0.2Hz Lost GPS navigation

GSM Status (blue): Flash @ rate 1 per sec GSM ON

Flash @ rate 1 per 3 sec GSM registered on network

Flash @ rate 3 per sec GSM Registered with GPRS service

Constant OFF GSM Modem OFF

Mounting

We recommend mounting the AT200 by either of the following methods:

Double sided foam adhesive tape, using de-greaser / solvent on the vehicle surface

Secure to vehicle using a cable tie, 5.0mm width to suit the cable tie guides on the device

Orientation

For optimum GPS performance, please mount the AT200 with the label facing the sky.

Interconnections

All connections to the AT200 are provided by a single 16-way connector.

AT200 Pin Applications and Colour Code

Function

Wire colour

JTMS

JTDI

RS232-TXD

GREEN

VIN 7 - 36 VDC

RED

DIGITAL INPUT 1

WHITE

DIGITAL OUTPUT

YELLOW

JTCK

JTRST

JTNRST

JTDO

RS232-RXD

BLUE

GND

BLACK

DIGITAL INPUT 2

BROWN

IBUTTON

GREY

VDD-DIG

ORANGE

GND

Digital Inputs

Digital inputs 1 and 2 suitable for use in ‘power-take-off’ applications and can be connected

directly to 12/24V vehicle circuits.

Digital Output

The AT200 is capable of switching an external load of up to 30V, 0.5A using a MOSFET Low Side

Switch, which must be used to switch the GND side of the load. The use of a 1A in-line fuse with

these switches is essential to prevent any damage through fault scenarios.

Integrated Accelerometer(s)

The AT200 has a built in 3 axis MEMS accelerometer that operates in the range ±2g and is used

to measure driver behaviour (acceleration and braking) during normal driving conditions.

The accelerometer also allows the AT200 to wake from sleep on movement, with configurable

thresholds. Please refer to the MEMS parameter and Power Management section for more

details.

iButton (Dallas Key) Interface

This can be used to read iButton devices for the purpose of Driver Identification. See the Driver

ID Application Note for more details of how to use this feature.

Electrical Parameters

Operating Conditions

Parameter

Min

Max

Units

Power Supply Input Voltage

+36

Digital Input High Voltage Threshold

+5.0

Digital Input Low Voltage Threshold

+2.0

Digital Maximum Voltage

+30.0

Digital Maximum Current

0.5

Absolute Maximum Ratings

Parameter

Min

Max

Units

Power Supply Input Voltage

-32

+40

Voltage on Digital 1-2 and ADC Inputs

-32

+32

Voltage on RS232 RX

-25

+25

Voltage on RS232 TX

-13

+13

Voltage on iButton/Dallas Interface

-5

Current sunk by MOSFET low side switches

500

Voltage rating of MOSFET switches

+30.0

Storage Temperature

-40

+85

°C

Operating Temperature (without battery)

-20

+60

°C

Operating Temperature (with battery)

°C

Typical Power Consumption

Operating Mode

Current @ 13.8V

Current @ 27.6V

Power Consumption

Fully Operational

25mA

14mA

< 400mW

Battery charging

500mA

275mA

< 7W

Sleep (no battery)

0.5mA

0.3mA

7mW

Sleep (with battery)

< 10uA

0.1mW

Environmental Specifications

Parameter

Specification

Storage temperature

-40 to +85 °C

Operating temperature (no battery)

-20 to +60 °C

Operating temperature (with battery)

0 to +45 °C (note: no charging below 0°C)

Ingress Protection

N/A

Vibration, broadband random

Complies with IEC60068-2-64

Shock

Complies with IEC60068-2-64

Humidity

N/A

Configuration

The AT200 has a versatile set of features to facilitate detailed customisation.

Programming with an ASCII Terminal

Custom configuration of the AT200 is best achieved via a serial interface to a PC. It is possible to

use any ASCII terminal program (e.g. HyperTerminal, Teraterm, ProComm, Com7 etc.) to enter

commands. Terminal settings are 115200 baud, 8 data bits, 1 stop bit, no parity and no flow

control.

How to Start a HyperTerminal Session (Windows Vista and earlier)

To open a HyperTerminal session, go to the Windows Start Menu and select:

Start –Programs –Accessories –Communications –HyperTerminal

Double click on the Hypertrm.exe icon and enter a name for the session (e.g. AT200 Terminal).

Select “Direct to COM1” (or whatever COM port you are using) from the bottom field of the

“Connect To” dialogue box. Now select “115200” bits per second and “None” for Flow Control.

Select OK and the terminal session will start. Note that the AT200 does not echo typed

characters, so it is also useful to enable the “echo typed characters locally” option from the

Properties –Settings –ASCII Setup menu. These settings can be saved by selecting the

appropriate option before closing the session.

Terminal Program for Windows 7

Windows 7 does not include HyperTerminal. In this case we recommend Teraterm, which can be

downloaded free of charge. For details and download sources see http://logmett.com/

Command Format

The AT200 uses the same command format for all input methods; TCP, SMS and RS232.

Each command will take the following format:

$AAAA,<arg1>,<arg2>,<argX><CR><LF>

Where AAAA is the command code and the text enclosed in < > are optional arguments.

Response Format

Each command will result in one response, by the same mode as the command was received. For

multiple commands see the section Multiple Command Response Format.

The format of an individual response message is as follows:

$AAAA,<status><CR><LF>

Where <status> is one of the following values

UN Unknown Command

OK Command Completed Successfully

ER Command Failed (Error)

PR Password Required

Single Command Examples

Status Command Response

Unknown $FISH,400,56 $FISH,UN<CR><LF> unrecognised command

Success $DIST,50 $DIST,OK<CR><LF> valid command, ok

Error $DIST,9999909090 $DIST,ER<CR><LF> parameter out of range

Multiple Command Format

In SMS mode it is often convenient to send several commands together in one SMS or packet. It

is possible to append multiple commands together as described below.

Example 1

$DIST,50<CRLF>

$GPSQ,100<CRLF>

Example 2 (recommended format for TCP/UDP mode)

$DIST,500$APPW,orangeinternet$FRED,1

Multiple Command Response Format

Multiple commands received at the same time via any mode will result in one response for each

command parsed. The responses will be in exactly the same format as those described in the

section Single Command - Response.

For Example 2 above the response would be:

$DIST,OK<CR>

$APPW,OK<CR>

$FRED,UN<CR><LF>

The first two commands are recognised and successfully executed, whereas the last command is

unrecognised.

Over the Air Configuration by SMS/GPRS

The commands and formats described above can all be used over SMS, UDP or TCP sockets. The

response will always be returned by the same mode as the command is received, so commands

submitted by SMS will be responded to by SMS to the sender’s phone number. Note that the

sender’s telephone number must be disclosed for the response to succeed.

When sending commands over TCP/UDP sockets, please do not include carriage return (CR) or

line-feed (LF) characters between commands, these are not necessary and can cause parsing

problems.

Prevention of Unauthorised Device Reconfiguration

There is a PIN code feature, which can be used to prevent unauthorised reconfiguration of

devices by SMS. Please refer to the PASS command in the Configuration section of this

document.

Application Parameters

GSM/GPRS Network Settings:

GPRS Access Point Address (APAD)

It is necessary to set the access point network (APN) details for the specific network or

GPRS service provider being used. This information should be supplied by your GSM

Network Operator or Service Provider. A list of GPRS access point addresses, usernames

and passwords for most GSM operators can be found at

http://www.taniwha.org.uk/gprs.html

GPRS Access Point Username (APUN)

See above.

GPRS Access Point Password (APPW)

See above.

Application Server Settings:

TCP Host IP Address (IPAD)

When using GPRS mode, the host server must provide a TCP socket with a static (public)

IP address. This address should be entered (without the port number). Alternatively, a

hostname can be accepted for the IPAD parameter, in which case the GPRS network

service provider will provide the DNS look-up to resolve the hostname to an IP address.

Maximum hostname length is 64 characters.

NOTE: IP address should be entered WITHOUT LEADING ZEROS

TCP Host Port Number (PORT)

The port number for the TCP host, as required for GPRS mode.

Communication Mode (MODE)

This command specifies the required GSM communication mode, as described in the table

below:

<mode>

Communication method

RESERVED

GPRS (TCP)

GPRS (UDP)

RESERVED

TCP Acknowledgment Timeout (TCPT)

This parameter specifies the maximum number of seconds that the AT200 device will wait

for the host to send the ACK code in response to sending a report. The default value is 30

seconds. A value of zero will disable the acknowledgment feature.

Reporting Level (REPL)

This parameter is a bitfield (3 bytes) which can be used to enable/disable certain types of

report based on their reason code. The bits are defined to match the reason bytes in the

appropriate protocol, set the appropriate bit to enable reports based on the associated

reason. Note there are differences between protocols, please refer to specific protocol

documentation for details.

A value of 16777215 will enable all reports.

Reporting Protocol (PROT)

The AT200 supports various reporting protocols (data packet formats). Protocols used by

other devices are implemented for compatibility with existing systems. To take

advantage of the full AT200 feature set, the specific AT200 protocol “K” is recommended.

Documentation for each of these protocols is available on request from Astra Telematics,

please email support@gps-telematics.co.uk for a copy.

<prot>

Reporting protocol

Fixed packet protocol “A”