38
39
IMPORTANT: The system assumes the speed signal is taken from the rear wheels of
the vehicle. Performance at high turn rates may vary on vehicles where speed is taken
from the front wheels.
IMPORTANT: The system assumes the tachograph speed signal input is taken from
a motion sensor. Performance at low speeds may vary where the tachograph speed
signal input is taken from the CAN.
6.4.3 Output Triggers and Integration of External Alarm
There are four switched ground output triggers on the Sidescan
®
Predict system. These
function as described in the table below:
Location of B7 on a typical tachograph. May vary dependent on tachograph model.
To integrate an external alarm, connect the positive of the alarm to the vehicle ignition circuit
and the ground of the alarm output trigger 1. When the indicator is activated and the speed
is below the system shutdown speed (30 kph/18.6 mph), the switched ground will activate,
and the alarm will be powered.
Each output trigger can provide a switched ground for up to 750 mA at 32 V.
Any unconnected output trigger should be safely terminated and robustly constrained.
6.4.4 USB Connector
The algorithm ECU has a USB connector used during configuration and fault diagnosis.
The cable and plug should be protected after configuration so that no debris can enter
and it cannot become damaged during vehicle operation. After installation ensure the USB
cable is robustly constrained to prevent contact with other tail cables or other equipment
during the vehicle’s operation.
6.5 Electrical Connections between Sidescan
®
Predict Components
This section describes the connection between the main Sidescan
®
Predict components. It
describes separately connection between the buzzer display and algorithm ECU, connection
between the algorithm ECU and UDS ECU, and connection between the UDS ECU and
the sensors. Different lengths of extension cables can be used between each connection
depending on the requirements of a given installation.
6.5.1 Connecting UDS ECU to Sensors
The UDS ECU is connected to the sensors via a sensor bus configuration. 4-way splitter
cables are used to connect multiple sensors, extension cables, and other splitters to the
bus. 3-pin extension cables can be inserted at any point in the bus as required by the
installation. The maximum cabling length between the UDS ECU and any sensor is 30 metres.
Any unused connectors on the splitters should be closed off using the attached end caps
to maintain ingress protection.
Sensor bus connections between UDS ECU and sensors.
Trigger
number:
Trigger
name:
Activated when:
1
Indicator Left trigger is active on left hand side installations. Right hand
trigger is active on right hand side installations. Speed must be
below system shutdown speed (30 kph/18.6 mph).
Used to integrate external alarm.
2
Alarm 1
Moving object is detected.
Speed must be below system shutdown speed.
3
Alarm 2
“Danger of collision” alarm is active.
Speed must be below system shutdown speed
4
Alarm 3
“Collision predicted” alarm is active.
Speed must be below system shutdown speed.
6
Hardware Installation