Squarell Technology - Independent vehicle data and CANbus specialist -: J1939/CANbus Interface

What data does the Squarell telematics interface read?
The Squarell telematics interface reads all available data from a J1939 CANbus. This data is limited to the data the vehicle manufacturer wishes to release.

What does the Squarell telematics interface do with the data?
Squarell does more than just streaming the data to the RS232 port. Squarell processes the data via advanced algorithms inside the interface.
These algorithms provide you with exact and important data to accomplish advanced fleet management. In the list we show you some data generated by the telematics interface. This can be extended on a project basis. We are continuously developing more routines and can advise you how to accomplish a unique CANbus fleet management solution

About J1939

The J1939 CANbus standard is a CANbus protocol defined by the American Automotive insdustry (SAE). The protcol describes hundreds of messages, data items and protocol issues. Squarell supports this J1939 protocol. You can even add extra propriatary CANbus messages.

How is the data send over RS232?
The protocol to send the streamed and processed data over RS232 can be configured to the specification of the customer. The data is send on interval basis, but together with the customer can define:

Baud rate, stop bits, parity
Checksum (HDLC-PPP, CCITT16, proprietary)
Handshake (CTS/DTR)
Sending data on request of the telematics/PC
Sending when a event occurs (f.e. harsh braking)
Sending on interval (f.e. streaming actual data)
The 3 above combined for every data type or set of data
Threshold settings (f.e. maximum idling time)
Calibration routines

RS232, USB, Bluetooth, ZIGbee.
The standard product supports the RS232 communication over a D-sub9 connector or via a Serial to USB interface. On request wireless connectivity over Bluetooth or ZIGbee are supported.

Services.
The configuration options are very easy and fast to implement. That means that from start to working finish you are less then a few days away. We have all services available to help you start up your CANbus projects.

Standard J1939(1)

Speed
RPM
Brake Switch
Clutch Switch
Accelerator pedal
Cruise control active
PTO active
Fuel level
Odometer
Total fuel
Tachograph work status
Tachograph speed
Tachograph performance, handling en event status
Service distance
Engine hours
Engine Coolant temperature
Axle weight
Vehicle ID

Special Squarell algorithms for

Brake analysis
Clutch and gear analysis
Idling analysis
Rough riding analysis
Retarder use
PTO analysis
Acceleration analysis
Vehicle weight
Fuel theft routines
Eco driving analysis

(1) Depending on the brand, model, vehicle configuration and OEM FMS interface configuration

Do you need a FMS interface?
To read the data from a vehicle you’ll need a FMS interface of some kind. You cannot read data from a vehicle data network without a protective interface function. Many trucks are ordered from factory without a FMS interface. It is not easy to check if a FMS interface is installed, software enabled and tested. With Squarell FMS interface you do not have to visit the truck dealer as the FMS interface is ready to go.
If a truck has no FMS interface and you want to use the power of the Squarell telematics interface then refer to section of the Squarell Telematics interface with FMS products.

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