Intelligent brake controller for use with towed trailer braking systems

• US 20030038534A1
• Filed: 08/22/2001
• Published: 02/27/2003
• Est. Priority Date: 08/22/2001
• Status: Abandoned Application

• Current Assignee: William Lunceford Barnett
• Original Assignee: William Lunceford Barnett
• Inventors: Barnett, William Lunceford
• Application Number:
  US09/938,001
• Publication Number:
  US 20030038534A1
• Time in Patent Office: Days
• US Class Current: 303/7
• CPC Class Codes: B60T 13/74 with electrical assistance or drive
• CPC Class Codes: B60T 8/1708 for lorries or tractor-trailer combinations

Abstract

A brake controller system for a towing vehicle and a towed vehicle. The system has a brake control unit that controls a brake activator. The brake control unit takes various data readings, which may include temperature of the brake activator and brake fluid pressure. The system then calculates an appropriate amount of brake force and determines whether to supply additional voltage with a voltage booster.

Claims

1. A brake controller system comprising:

brakes located on a towed vehicle;

a brake activator for applying force to said brakes;

a brake control unit in communication with said brake activator, said brake control unit having a CPU;

a battery in electrical communication with said brake control unit for supplying power to said brake control unit;

voltage regulation circuitry in electrical communication with said brake control unit;

said CPU in electrical communication with a bus that is in communication with at least said brake activator; and

a voltage booster in electrical communication with said battery and with said brake activator.

2. The brake controller system according to claim 1 wherein said brakes are electric brakes.

3. The brake controller system according to claim 1 further comprising:

a towing vehicle having a towing vehicle brake system for operating towing vehicle brakes, said towing vehicle brake system having a master cylinder.

4. The brake controller system according to claim 1 wherein:

said brake activator is comprised of magnets; and

a current sensor for maintaining constant amperage to the towed vehicle brakes.

5. The brake controller system according to claim 4 wherein:

said CPU adjusts a signal for brake activation, based at least partially on data from said current sensor.

6. The brake controller system according to claim 3 further comprising:

a pressure sensor in said towing vehicle master cylinder for measuring the pressure of brake fluid within said towing vehicle brake system.

7. The brake controller system according to claim 1 wherein:

wherein said brake control unit is located within a towing vehicle

8. The brake controller system according to claim 1 wherein:

said bus communicates said CPU with brake lights on said towing vehicle.

9. The brake controller system according to claim 1 wherein

said bus communicates said CPU with a pressure sensor positioned proximate a master cylinder of said towed vehicle.

10. The brake controller system according to claim 1 wherein

said bus is a brake wire that receives multiplexed signals.

11. The brake controller system according to claim 1 further comprising:

a display on a front face of said brake controller unit and in communication with said CPU for use as a visual indicator to an operator.

12. The brake controller system according to claim 1 further comprising:

a control panel on said brake controller unit comprising an adjust selection display down button, and adjust selection display up button, an enter selection displayed button and a scroll menu button.

13. The brake controller system according to claim 1 further comprising:

a manual thumb brake switch on brake controller unit for manually operating said brakes.

14. A method for operating a brake controller system comprising the steps of:

signaling a voltage booster to supply additional voltage above a towing vehicle standard voltage; and

actuating the towed vehicle brakes.

15. The method for operating a brake controller system comprising the steps of:

sensing brake fluid pressure within a towing vehicle brake system with a pressure sensor;

sensing current in an electric brake system;

calculating with a brake controller unit the appropriate amount of brake force to be applied by said brake activator;

determining whether a voltage booster is required to supply additional voltage to said towing vehicle brake system;

applying an appropriate amount of brake force with an appropriate amount of voltage as directed by said brake controller unit.

16. The method for operating a brake controller system according to claim 15 further comprising the steps of:

signaling brake lights and a brake activator with said brake controller unit over a brake line by multiplexing signals over said brake line.

17. The method for operating a brake controller system according to claim 15 further comprising the steps of:

actuating towed vehicle brakes without actuating towing vehicle brakes by use of a manual thumb brake switch,

generating a signal from said brake controller unit that is based upon and directly proportional to a linear position of the manual thumb brake switch; and

activating said brake activator with said signal.

18. The method for operating a brake controller system according to claim 15 further comprising the steps of:

storing data within a CPU of said brake controller system;

displaying at least a portion of said data with an alphanumeric display as a visual indicator to the vehicle operator during operation of the brake controller;

wherein said data is selected from a group comprising;

Brake Gain;

Time;

Date;

Last Maximum Brake;

Last Maximum Stroke;

Last Test;

Maximum Brake;

Last Test;

Maximum Stroke;

Truck Control;

Serial Number;

Truck Control;

Date Manufactured;

Truck Control;

Born on Date;

Trailer Control;

Serial Number;

Trailer Control;

Date Manufactured;

Trailer Control;

Born on Date;

Run Diagnostic;

Test Brakes.