User's Manual

There are two A-Stop receivers per autonomous

truck. The receivers are powered from the machine

24V supply. The

receivers send and transmit at 919

MHz through the antenna which connects with a

cable to the antenna connector (8) located on the

side of the rec

eiver. Each receiver communicates

with the autonomous machine using a CAN bus.

For redundancy, one receiver communicates

over the machi

ne CAN circuit and one receiver

communicates over the autonomous CAN circuit.

Under normal operation, the receivers transmit a

periodic hea

rtbeat message until an Autonomous

Stop (A-Stop) command from an A-Stop Transmitter

is received. The receivers also transmit to each other

for redunda

ncy.

Electrical

Output Compon en ts

A-Stop Transmitter

g02799960

Illustration 8

A-Stop Transmitter

The A-Stop transmitter is a hand held unit that can

be carried by each individual within the area of

autonomous ope

ration. It runs off a rechargeable,

1.2 V NiMH battery which is charged using the port

on the side of the transmitter. The transmitter sends

signals at a 91

9MHzﬁxed frequency to the A-Stop

receivers within the transmitter operating range. The

transmitter can stop every autonomous truck within

approximatel

y 300 m. The transmitter also has LED

indicator lights for Stop, Clear, Test, Low Battery,

Battery Charging, and Battery Fault functions. The

transmitte r

will enter a power-saving sleep mode after

24 hours of inactivity or can be triggered manually.