Onyx EGPRS User Manual Download Page 3

Onyx.

 Advanced car security solutions 

16 Shapira St. Rishon Le - Zion 75052, Israel 

Tel: 972-3-9413313 ; Fax: 972-3-9413330 
www.onyxtech.co.il  ;  [email protected]

 

 

Page 3 of 12                    EGPRS Unit User Guide   

             

 

 

 

 

Product Description 

The EGPRS Cellular Monitoring Unit is a self and independent device which 
provides a cost effective solution for monitoring and controlling vehicles such 
as: trucks, privates and motorbikes. This is accomplished by locating and 
tracking them over the cellular wireless network. The EGPRS communicates 
over the GSM cellular network (for a visual car's whereabouts over a map). 

The EGPRS unit is a GPS GSM device that can also be connected to other 
vehicles indicators (alarm, speed, engine etc...). 

The EGPRS is composed of the following modules: 

 

Internal GSM/GPRS engine 

 

Internal antenna 

 

Internal backup battery  

 

External GPS module 

 

Controller and I/O circuits 

The EGPRS is a GSM / GPRS unit which uses GPRS IP communication (or 
SMS) in order to send and receive information regarding the vehicle status and 
location. The EGPRS contains a GPS to provide the vehicle’s location data.  

The Micro controller and GSM transceiver are the core elements of the EGPRS, 
as illustrated in the following block diagram (Figure 2). 

The Micro controller

 

is the core of the EGPRS. It runs the application program 

and communicates with the GIS Server and peripheral devices to collect 
information. It can respond to or issue commands. 

The Micro controller interfaces with the GPS over the RS-232 channel. 

The charger is fed from the car battery to charge the internal backup battery. 
The internal backup battery has the ability to be used for up to 10 hours under 
normal operating conditions when external power is disconnected. The EGPRS 
utilizes status triggered charging algorithm in order to not harm the internal 
batteries. 

The SIM module holds the relevant IP address used to identify the unit as well 
as other subscriber identification parameters registered in the system upon 
activation. 

 

Summary of Contents for EGPRS

Page 1: ...13 Fax 972 3 9413330 www onyxtech co il info onyxtech co il Page 1 of 12 EGPRS Unit User Guide EGPRS User Guide Version 1 2 January 2009 Contact Us ERM Electronic Systems 16 Hsar Shapira st Rishon Lez...

Page 2: ...n 3 2 Block Diagram HW components 5 2 1 GPS Module 5 2 2 GSM operating frequency 5 2 3 Peripheral communication 6 2 4 Physical description 7 3 Installation Guide 11 3 1 EGPRS Vehicle Installation 11 T...

Page 3: ...S unit which uses GPRS IP communication or SMS in order to send and receive information regarding the vehicle status and location The EGPRS contains a GPS to provide the vehicle s location data The Mi...

Page 4: ...vanced car security solutions 16 Shapira St Rishon Le Zion 75052 Israel Tel 972 3 9413313 Fax 972 3 9413330 www onyxtech co il info onyxtech co il Page 4 of 12 EGPRS Unit User Guide Figure 1 Product O...

Page 5: ...wer source 9 32 V Digital Input Line eNet 2 1 GPS Module The GPS receiver simultaneously tracks up to sixteen satellites and provides accurate satellite positioning data with fast time to first fix TT...

Page 6: ...pports communication over a common data line The EGPRS Micro controller communicates with the GPS device over this data line 2 3 2 RS 485 The EGPRS Micro controller communicates with the alarm system...

Page 7: ...than 65mm it is very compact and easily assimilated and installed in the car environment The shell which covers the unit is made of hardened plastic The SIM socket is present on the right long of the...

Page 8: ...ructure of the connectors the numbers below the image are pin s number identification 6 5 4 3 2 1 3 2 1 6 5 4 4 3 2 1 6 5 4 3 2 1 3 2 1 6 5 4 4 3 2 1 2 4 4 1 RS485 Connector Description The following...

Page 9: ...t ID Analog ID 4 Port A I O Pull Up Purple Digital Input or Digital Output or Analog In 0 12 1 1 3 1 Port B Output Gray Digital Output active low 2 5 Port C Input Pull Down Blue Digital Input or VSS 2...

Page 10: ...ion 200 mA Current drain Navigation 45 mA Powerdown 5 mA Positive Spike Resistibility 100 Volt for a period of 8 ms Negative Spike Resistibility 100 Volt for a period of 8 ms Backup Batteries 3 x AA N...

Page 11: ...of the I O harness to the Ignition switch ignition on should supply 12 24V to the brown wire 5 Connect the GPS connector to the unit if a GPS is installed Figure 5 Up View 3 1 1 Attention The EGPRS un...

Page 12: ...low it to see the sky as clearly as possible The GPS module must not be installed near the front window in cars with front window The GPS module must be installed with the side marked with UP being th...

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