Combined tire pressure gauge and remote tire pressure display

• US 7,889,064 B2
• Filed: 10/27/2008
• Issued: 02/15/2011
• Est. Priority Date: 10/26/2007
• Status: Active Grant

• Current Assignee: Measurement Ltd (Measurement Ltd., Inc.)
• Original Assignee: Measurement Ltd (Measurement Ltd., Inc.)
• Inventors: Petrucelli, Steven
• Primary Examiner(s): Lieu; Julie
• Application Number:
  US12/259,046
• Publication Number:
  US 20090109012A1
• Time in Patent Office: 841 Days
• Field of Search: None
• US Class Current: 340/442
• CPC Class Codes: B60C 23/0401 characterised by the type of alarm
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: G01L 17/00 Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies

Abstract

A combined tire pressure gauge and remote tire pressure display includes a port adapted to couple to a vehicle tire valve stem and to open a valve in the valve stem; a chamber in physical communication with the port; a local pressure transducer in the chamber for detecting a pressure of a fluid within the vehicle tire and providing an output signal representative of the detected pressure; a wireless receiver for receiving a signal identifying a tire pressure sensor and having a detected tire pressure and for providing an output signal; a processor for receiving the output signal from the pressure transducer and the output signal from the wireless receiver, and for providing a processor output signal indicative of an identified tire and a value of the detected pressure, in a remote tire display mode, and for providing a processor output signal indicative of a detected tire pressure, in a tire pressure gauge mode; and a display coupled to the processor for providing a visible indication of detected pressure value and identified tire in accordance with the processor output signal in the remote tire display mode, and for providing a visible indication of detected pressure value in the tire pressure gauge mode.

Claims

1. A combined tire pressure gauge and remote tire pressure display, comprising:

a housing;

a port in the housing adapted to couple to a vehicle tire valve stem and to open a valve in the valve stem;

a chamber in physical communication with the port;

a local pressure transducer in the chamber for detecting a pressure of a fluid within the vehicle tire and providing an output signal representative of the detected pressure;

a wireless receiver in the housing for receiving a signal identifying a tire pressure sensor and providing a detected tire pressure and for providing an output signal;

a processor in the housing for receiving the output signal from the pressure transducer and the output signal from the wireless receiver, and for providing a processor output signal indicative of an identified tire and a value of the detected pressure, in a remote tire display mode, and for providing a processor output signal indicative of a detected tire pressure, in a tire pressure gauge mode;

a display on a face of the housing coupled to the processor for providing a visible indication of detected pressure value and identified tire in accordance with the processor output signal in the remote tire display mode, and for providing a visible indication of detected pressure value in the tire pressure gauge mode in a second orientation different from the first orientation; and

wherein the display provides the visible indication in the remote tire display mode in a first orientation, and provides the visible indication of detected pressure value in the tire pressure gauge mode in a second orientation different from the first orientation.

2. The combined tire pressure gauge and remote tire pressure display of claim 1, wherein the second orientation is opposite to the first orientation.

3. The combined tire pressure gauge and remote tire pressure display of claim 2, further comprising a power connector protruding from the housing at a location appearing to be above a top of the display when the display is operating in the first orientation.

4. The combined tire pressure gauge and remote tire pressure display of claim 3, wherein the power connector is a plug adapted to engage with a 12 volt cigar lighter power receptacle of an automobile.

5. The combined tire pressure gauge and remote tire pressure display of claim 3, wherein the port protrudes from the housing opposite to the display.

6. The combined tire pressure gauge and remote tire pressure display of claim 3, wherein the housing has a main body portion, the display being on the main body portion, and the power connector being rotatably connected to the main body portion.

7. The combined pressure gauge and remote tire pressure display of claim 6, wherein the port protrudes from the housing near an end of the housing opposite to the power connector.

8. The combined tire pressure gauge and remote tire pressure display of claim 7, wherein the power connector is a plug adapted to engage with a 12 volt cigar lighter power receptacle of an automobile.

9. The combined tire pressure gauge and remote tire pressure display of claim 6, wherein, if no current is detected from the power connector, the processor selects the tire pressure gauge mode.

10. The combined tire pressure gauge and remote tire pressure display of claim 6, wherein the main body portion is adapted to be supported in a fixed orientation relative to the power connector.

11. A method of providing tire pressure measurements by a combined tire pressure gauge and remote tire pressure display, comprising:

receiving by the combined tire pressure gauge and remote tire pressure display wireless signals in periodic transmissions from a plurality of tire pressure gauges measuring the tire pressure of a vehicle, the signals having data indicative of the tire pressure measurements and tire identity;

displaying on a display of the combined tire pressure gauge and remote tire pressure display in a first orientation the wirelessly received tire pressure measurements and tire identities successively for each of the tires of the vehicle;

changing an operating mode of the combined tire pressure gauge and remote tire pressure display;

measuring a tire pressure by a local pressure sensor of the combined tire pressure gauge and remote tire pressure display; and

displaying on the display of the combined tire pressure gauge and remote tire pressure display the tire pressure measured by a local pressure sensor in a second orientation different from the first orientation.

12. The method of claim 11, further comprising a step of displaying differences between target pressures and the wirelessly received tire pressure measurements.

13. The method of claim 11, wherein the step of changing display mode is performed in response to detection of zero voltage from a power connector.

14. The method of claim 11, further comprising, in response to receiving wireless signals in successive transmissions from one of the tire pressure gauges indicative of a drop in pressure greater than a threshold, causing an audible alarm to sound.

15. The method of claim 11, further comprising, in response to receiving a signal from one of the tire pressure gauges indicative of tire pressure below a lower threshold, causing an audible alarm to sound.

16. The method of claim 11, further comprising, in response to receiving a mode change signal from a user, changing to a manual scan mode in which a tire pressure of a selected tire is displayed until a user selection is received.

17. A system for detecting and displaying vehicle tire pressure, comprising:

a plurality of valve cap mounted tire pressure gauges for detecting tire pressure and providing wireless signals indicative of the detected tire pressure and tire pressure gauge identification; and

a combined tire pressure gauge and remote tire pressure display, comprising;

a housing having a display, including alphanumeric characters, on a side thereof;

a port in the housing adapted to couple to a vehicle tire valve stem and to open a valve in the valve stem;

a chamber in physical communication with the port;

a local pressure transducer in the chamber for detecting a pressure of a fluid within the vehicle tire and providing an output signal representative of the detected pressure;

a wireless receiver in the housing for receiving the wireless signals and for providing an output signal;

a processor in the housing for receiving the output signal from the pressure transducer and the output signal from the wireless receiver, and for providing a processor output signal indicative of an identified tire and a value of the detected pressure, in a remote tire display mode, and for providing a processor output signal indicative of a detected tire pressure, in a tire pressure gauge mode; and

a display on a face of the housing coupled to the processor for providing a visible indication of detected pressure value and identified tire in accordance with the processor output signal in the remote tire display mode, and for providing a visible indication of detected pressure value in the tire pressure gauge mode;

wherein the display of the combined tire pressure gauge and remote tire pressure display provides the visible indication in the remote tire display mode in a first orientation, and provides the visible indication of detected pressure value in the tire pressure gauge mode in a second orientation different from the first orientation.

18. The system of claim 17, wherein tire pressure gauge and remote tire pressure display further comprises a plug adapted to engage with a 12 volt cigar lighter power receptacle of an automobile power connector protruding from the housing at a location appearing to be above a top of the display when the display is operating in the first orientation.