Controller for a vehicle
A controller for a vehicle, the vehicle comprising an imaging device for generating image data and the imaging device further comprising an imaging accelerometer for generating imaging accelerometer data for determining the orientation of the imaging device relative to the vehicle, the controller comprising: an input for receiving a signal indicative of the imaging accelerometer data and the generated image data; a processor arranged to identify alignment artefacts in the received image data in dependence on the received imaging accelerometer data; and an output for outputting an error signal in dependence on the identified alignment artefacts.
1 . A control module for a vehicle, wherein the vehicle comprises a tow vehicle and a trailer, the control module comprising:
a first input configured to receive a first input signal indicative of trailer accelerometer data being generated by a trailer accelerometer associated with the trailer;
a second input configured to receive a second input signal indicative of tow vehicle accelerometer data being generated by a tow vehicle accelerometer associated with the tow vehicle;
a processor arranged to determine a length of the trailer in dependence on the trailer accelerometer data and the tow vehicle accelerometer data; and
an output configured to output a signal indicative of the length of the trailer as determined by the processor,
wherein the length of the trailer, as calculated by the control module, is approximately equal to a length from a hitch point, between the trailer and the tow vehicle, and the trailer accelerometer, and further wherein the trailer accelerometer is positioned at the rear of the trailer.
2 . The control module of claim 1 , wherein the length of the trailer as calculated by the control module is approximately equal to double the distance between a rear axle of the tow vehicle and an axle of the trailer.
3 . The control module of claim 1 , configured to determine the length of the trailer in dependence on a phase difference between the trailer accelerometer data and the tow vehicle accelerometer data.
4 . The control module of claim 1 , wherein the control module comprises a further input configured to receive a further input signal indicative of at least one of: a speed of the vehicle; a hitch angle of the trailer relative to the tow vehicle; or a turning radius of the vehicle; and wherein the processor is configured to determine the length of the trailer in dependence on at least the first input signal and the further input signal.
5 . The control module of claim 1 , wherein the length of the trailer is calculated by the control module when the trailer displaces relative to the tow vehicle.
6 . The control module of claim 1 , wherein the length of the trailer as calculated by the control module is used to calibrate one or more vehicle systems.
7 . The control module of claim 1 , wherein the control module is configured to store the length of the trailer, in association with a trailer identifier, in a memory module.
8 . The control module of claim 1 , configured to calculate the length of the trailer based on a magnitude of outswing of the trailer as the vehicle travels around a corner.
9 . The control module of claim 1 , wherein the length of the trailer as calculated by the control module is based on one or more of a wheelbase of the tow vehicle and a turning radius of the tow vehicle.
10 . A vehicle comprising the control module of claim 1 .
11 . A method of determining a length of a trailer being towed by a tow vehicle, wherein the trailer comprises a trailer accelerometer configured to generate trailer acceleration data and the tow vehicle comprises a tow vehicle accelerometer configured to generate tow vehicle accelerometer data, the method comprising:
receiving trailer accelerometer data generated by the trailer accelerometer;
receiving tow vehicle accelerometer data generated by the tow vehicle accelerometer;
determining the length of the trailer in dependence on the received trailer accelerometer data and the received tow vehicle accelerometer data; and
outputting the length of the trailer,
wherein the length of the trailer is approximately equal to a length from a hitch point, between the trailer and the tow vehicle, and the trailer accelerometer, and further wherein the trailer accelerometer is positioned at the rear of the trailer.
12 . A method of providing a visual aid for an articulated vehicle manouevre, comprising:
the method of determining the length of the trailer according to claim 11 ; and
providing a visual indication as to a relative position of the tow vehicle and the trailer using the determined length of the trailer.
13 . The method as claimed in claim 11 , wherein the tow vehicle accelerometer is positioned on the tow vehicle.