Huf Huelsbeck and Fuerst and KG CAM Users Manual
Information Package No. 1
Date: 2018-02-28
Car-Access-Module
Revision: A
EN, FCC and ISED Approval
Huf Hülsbeck & Fürst
Created by:
M.Eng. Markus Mehlich
Hardware Developer
Huf Secure Mobile GmbH
Steeger Straße 17
42551 Velbert
Tel.: +49(0)2051 272-6048
Mail: markus.mehlich@huf-group.com
www.huf-group.com
Created:
2018-02-28
Information Package
No.1
Revision A
EN, FCC and ISED Approval for:
Page 1 of 13
Car-Access-Module
All of the information contained in this document is strictly confidential and should not be
available for a third party.
Information Package No. 1
Date: 2018-02-28
Car-Access-Module
Revision: A
EN, FCC and ISED Approval
Huf Hülsbeck & Fürst
Page 2 of 13
Table of Contents
PRODUCT DESCRIPTION 3 1
1.1 General and Function: 3
1.2 System Overview 4
1.3 Module Descriptions 5
1.4 Interfaces 6
1.5 Battery 8
1.6 Motor 8
TECHNICAL DATA 9 2
PRODUCT LABEL 10 3
DESCRIPTION OF VARIANTS 11 4
HOUSING 11 5
ASSEMBLY INSTRUCTIONS 11 6
Information Package No. 1
Date: 2018-02-28
Car-Access-Module
Revision: A
EN, FCC and ISED Approval
Huf Hülsbeck & Fürst
Page 3 of 13
Product Description 1
1.1 General and Function:
The „Car-Access-Module“ (CAM) collects and processes telematics data and locks and
unlocks vehicles by phones.
It is used for determining detailed information about movement of fleet vehicles and
sending that information to appropriate servers. The information is illustrated to a fleet
manager by a resource management software to make an optimized use of the vehicles
possible.
The electronic control unit (ECU) is an independent unit, which is able to determine
GPS coordinates, acceleration values, states of vehicle equipment and CAN
information. All that information can be sent to a resource management server or a
smartphone via an European mobile communication network.
Additionally the CAM is able to press the buttons of a car key which is placed inside of
the CAM by a electro mechanical system. Thereby the car can be locked and unlocked.
The key is continually located inside of the car. Therefore the CAM is able to stop the
communication between the car and the key to avoid an unauthorized use of the car.
Information Package No. 1
Date: 2018-02-28
Car-Access-Module
Revision: A
EN, FCC and ISED Approval
Huf Hülsbeck & Fürst
1.2 System Overview
(with oscillator frequencies)
Page 4 of 13
The CPU of the CAM is an ARM Cortex-A8 (Sitara). It is controlling all interfaces or
modules and also the motor with the aid of the driver.
As power supply there are available the vehicle power (12 V) and a rechargeable
battery which is used as backup.
The CAM electronics has two PCBs called Main PCB and LF PCB. Most of the
components are placed on the Main PCB. On the LF PCB there are the Hall Effect
Sensor and the LF-Coil.
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