Pedal sensor and method

• US 8,240,230 B2
• Filed: 01/18/2006
• Issued: 08/14/2012
• Est. Priority Date: 01/18/2005
• Status: Active Grant

• Current Assignee: Kongsberg Automotive ASA
• Original Assignee: Kongsberg Automotive Holding ASA
• Inventors: Peniston, Chuck, Rick, Sean, Vondras, Jan
• Primary Examiner(s): LUONG, VINH
• Application Number:
  US11/333,530
• Publication Number:
  US 20060169093A1
• Time in Patent Office: 2,400 Days
• Field of Search: 74512-514, 745/60, 745/64, 324/207.2, 324/207.12, 324/207.13, 295/95
• US Class Current: 74/512
• CPC Class Codes: B60K 26/021 with means for providing feel, e.g. by changing pedal force characteristics
• CPC Class Codes: F02D 41/00 Electrical control of supply of combustible mixture or its constituents F02D43/00 takes precedence ; control of engine starters F02N11/08, electrical control of engine ignition timing F02P5/145
• CPC Class Codes: F02D 41/021 Introducing corrections for particular conditions exterior to the engine conjoint control of vehicle sub-units for propelling the vehicle B60W30/18
• CPC Class Codes: G01D 5/145 influenced by the relative movement between the Hall device and magnetic fields see G01R33/06
• CPC Class Codes: G05G 1/38 comprising means to continuously detect pedal position
• CPC Class Codes: G05G 5/03 Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position; Providing feel, e.g. means for creating a counterforce arrangements for indicating the position of the controlling member G05G1/015
• CPC Class Codes: G05G 5/04 Stops for limiting movement of members, e.g. adjustable stop G05G5/03, G05G5/05, G05G5/28 take precedence
• CPC Class Codes: Y10T 74/20528 Foot operated
• CPC Class Codes: Y10T 74/20534 Accelerator
• CPC Class Codes: Y10T 74/2054 Signal
• CPC Class Codes: Y10T 74/20888 Pedals
• CPC Class Codes: Y10T 74/20918 Foot rests

Abstract

An electronic pedal assembly including a treadle, a pedal arm connected to the treadle, and a rotor assembly about which the pedal arm rotates. The assembly also includes one or more Hall sensors positioned within a cavity in the rotor assembly and one or more magnets that fixedly attached to the rotor assembly. The Hall sensors detect the position of the treadle by monitoring the positions of the magnets. Also, a method of monitoring an electronic pedal assembly using one or more magnets and one or more Hall sensors.

Claims

1. A dynamic system, comprising:

a mounting bracket;

a moveable component rotatably mounted to the mounting bracket for movement between a first position and a second position;

a rotor assembly connected to the moveable component for concurrent movement with the moveable component between the first and second positions;

an emitter fixedly connected to the rotor assembly;

a casing having exterior walls with an interior surface defining an inner cavity within the casing and the exterior walls having an exterior surface outside of the inner cavity defining a working chamber such that the working chamber and the inner cavity are separated by the exterior walls the casing mounted to the mounting bracket about the rotor assembly, and a portion of the rotor assembly and the emitter being disposed within the working chamber when the casing is mounted to the mounting bracket; and

a sensor disposed within the inner cavity of the casing and positioned adjacent to the rotor assembly and the emitter when the casing is mounted to the mounting bracket for detecting a position of the emitter.

2. The dynamic system of claim 1, wherein the moveable component is further defined as a pedal arm with a foot pedal disposed on a distal end of the pedal arm.

3. The dynamic system of claim 1, wherein the emitter comprises a magnet and wherein the sensor comprises a Hall sensor.

4. The dynamic system of claim 1, further including a flux concentrator mounted to the rotor assembly about the emitter to define an interior portion of the rotor assembly with the sensor positioned within the interior portion of the rotor assembly adjacent the emitter when the casing is mounted to the mounting bracket.

5. The dynamic system of claim 4, wherein the exterior walls of the casing further define a protrusion projecting into the working chamber and into the interior portion of the rotor assembly when the casing is mounted to the mounting bracket.

6. The dynamic system of claim 5, wherein the sensor is disposed within the protrusion to orientate the sensor within the interior portion of the rotor assembly adjacent the emitter.

7. The dynamic system of claim 6, wherein the flux concentrator includes a continuous and substantially annular shaped configuration for insertion within the working chamber about the protrusion.

8. The dynamic system of claim 6, wherein the emitter is further defined as a first emitter and further including a second emitter fixedly connected to the rotor assembly and positioned on substantially opposing sides of the protrusion.

9. The dynamic system of claim 1, further including a shield positioned proximate to the sensor and configured to prevent an exterior magnetic flux from interfering with operation of the sensor.

10. The dynamic system of claim 9, wherein the shield comprises a washer.

11. The dynamic system of claim 1, wherein the sensor is further defined as a first sensor and further including a second sensor positioned opposite the first sensor, wherein the first sensor and the second sensor are positioned on a printed circuit board configured to detect the position of the emitter.

12. The dynamic system of claim 11, further including a protrusion projecting into the working chamber with the first and second sensors disposed within the protrusion to orientate the sensors adjacent the emitter when the casing is mounted to the mounting bracket.

13. The dynamic system of claim 1, wherein the sensor can be configured to be programmed.

14. The dynamic system of claim 1, wherein the casing is substantially water-tight.