The present invention relates to methods, systems and devices for integration of a tire pressure monitoring sensor with a tire pressure monitoring system of a vehicle.
Commercial and non-commercial vehicles now have tire pressure monitoring systems (TPMS) which include a central module, integrated or in communication with an electronic control unit of the vehicle, and tire pressure monitoring sensors (TPM sensors) for each vehicle wheel unit. In general, the TPM sensors monitor tire pressure within a respective tire and transmit a wireless signal to the central module which at a minimum includes tire pressure data. Should the sensed pressure be outside of an acceptable range or a substantial change in tire pressure occur, an alarm is generated and transmitted to the user of the vehicle.
Over time, TPM sensors require replacement by service technicians due to damage, depleted battery or otherwise. This requires installation and integration of new TPM sensors with a TPMS of a vehicle. During this process, in one configuration, the technician places the TPMS receiver of the vehicle in a learning mode and triggers each TPM sensor for identification purposes. The technician then sequentially triggers each TPM sensor utilizing a TPMS configuration tool, causing each sensor, new or existing, to transmit a wireless signal including an identifier to a control module of the TPMS. These tools communicate with a sensor through low frequency signals which in turn communicate with the TPMS through a higher frequency radio signal. The control module records the identifier, which may comprise numbers, letters, a combination of numbers and letters or any other identifying indicator, of each signal so as to interpret the location of TPM sensor data during operation thereof.
In a learning process of a typical TPMS, a technician places the TPMS receiver of the vehicle in learning mode by performing one or more steps, such as cycling an ignition key, pressing remote buttons, depressing a brake pedal, utilizing door lock switches, utilizing headlight switches, combinations thereof, or otherwise. As should be appreciated, this can be a laborious task. Once the learning processes is initiated, the TPMS tool indicates which tire pressure monitoring sensor installed on the vehicle should be triggered. The service technician moves to the specified wheel unit and utilizes the TPMS configuration tool to cause a corresponding TPM sensor to transmit a signal including an identifier. Once the signal is received by the control module, the control module confirms the learning of the TPM senor by either an audible signal or visual signal. The TPMS tool also receives the sensor data and indicates which TPM sensor is to be triggered next. This continues until all of the TPM sensors have been sequentially triggered, which requires the technician to walk to each wheel unit and place the tool next to a corresponding TPM sensor so as to trigger the sensor.
The present approaches provide methods, systems and devices for integration of a tire pressure monitoring sensor with a tire pressure monitoring system of a vehicle. The features of the present invention are predicated, in part, on use of a configuration tool configured for transmitting an existing tire pressure monitoring sensor identifier to a new tire pressure monitoring sensor, the new tire pressure monitoring sensor being configured to receive, store and retransmit the existing tire pressure monitoring sensor identifier.
Using the present approaches, it is no longer necessary to undergo timely, and at times, complicated learning processes for newly installed tire pressure monitoring sensors because the newly installed sensor will have and transmit the identifier of the previously installed tire pressure monitoring sensor, for a particular wheel unit of a vehicle.
In view of the foregoing, in a first aspect, a method of integrating one or more tire pressure monitoring sensors with a tire pressure monitoring system of a vehicle is provided. The method includes transmitting an identifier from a configuration tool to a first tire pressure monitoring sensor, wherein the first tire pressure monitoring sensor records the identifier on a memory device.
In another aspect, a configuration tool for communication with a tire pressure monitoring system is provided. The configuration tool includes a transmitter and receiver for communicating with tire pressure monitoring sensors. The configuration tool also includes a memory device for storing an identifier for a tire pressure monitoring sensor. The configuration tool further includes software instructions configured to transmit an identifier stored on the memory device to a tire pressure monitoring sensor through the transmitter.
In another aspect, a computer-readable memory device storing computer program instructions is provided. Which, when executed by a computer comprising at least one processor, the result is: i) the transmission of a signal suitable for causing a first tire pressure monitoring sensor to transmit a response signal; ii) the storing of an identifier included with the response signal into a memory device; and iii) the transmitting the stored identifier to a second tire pressure monitoring sensor.
In another aspect, a tire pressure monitoring sensor is provided. The tire pressure monitoring sensor includes a pressure sensor configured for monitoring air pressure and generating signals indicative thereof. The tire pressure monitoring sensor further includes a receiver configured for receiving wireless signals from a configuration tool. The tire pressure monitoring sensor further includes a processing unit and memory device including suitable software for: i) evaluating a signal received by the receiver to determine if an identifier is include within the signal, and ii) storing an identifier transmitted with the signal in a memory device of the tire pressure monitoring sensor. The tire pressure monitoring sensor further includes a wireless transmitter configured to transmit the stored identifier to a tire pressure monitoring system of a vehicle.
In another aspect, a method of monitoring and recording air pressure within a tire and transmitting the recorded air pressure and an identifier to a tire pressure monitoring system of a vehicle is provided. The method includes providing a tire pressure monitoring sensor including a pressure sensor, a processor, a memory device, a wireless receiver and a transmitter. The method further includes recording on the memory device an identifier received by the wireless receiver. The method further includes transmitting a wireless signal, including the recorded identifier and pressure data from the pressure sensor, through the wireless transmitter.
These and other features can be best understood from the following specification and drawings, the following of which is a brief description.
Referring to
In one exemplary mode of operation, a user utilizes the user interface 22 of the configuration tool 18 to cause a triggering signal to be transmitted to a first TPM sensor 12′, via transmitter 20. In response, the first TPM sensor 12′ generates a response signal, including an identifier of the first TPM sensor, that is received by the configuration tool 18, via receiver 21. The identifier received by the configuration tool 18 is displayed on a display screen 26 of the user interface 22 and stored on a computer-readable memory device 24 of the configuration tool. The user then utilizes the user interface 22 of the configuration tool 18 to transmit the stored identifier to a second TPM sensor 12″, via transmitter 20. The identifier is stored on the second TPM sensor 12″ and transmitted with each subsequent transmission.
As should be appreciated, with the copying and transfer of an existing TPM sensor identifier, the learning process which TPMS utilize to learn identifiers of TPM sensors can be avoided. The removal of this step allows a user to forego a learning process, which includes placement of a vehicle in a learning mode, which includes one or more steps, such as cycling an ignition key, pressing remote buttons, depressing a brake pedal, utilizing door lock switches, utilizing headlight switches, combinations thereof, or otherwise. It also eliminates steps necessary during a learning mode. For example, in a learning mode the TPMS 14 is configured to receive and interpret wireless data having a particular data format, e.g. frequency, rate of data transmission, order of data transmission, or otherwise, as prescribed by original equipment manufacturers of the TPMS or vehicle 16. The TPMS 14 is configured to receive a particular number of responses based upon the number of TPM sensors being utilized by the vehicle 16, e.g. 4. The TPMS is further configured to receive the responses in a particular order. As an example, once in the learning mode the TPMS 14 anticipates the receipt of a first wireless signal from a front passenger wheel unit, a second wireless signal from a rear passenger wheel unit, a third wireless signal from a rear driver wheel unit and the fourth wireless signal from a front driver wheel unit. Once received, the TPMS assigns a wheel position to an identifier transmitted with each wireless signal so as to identify the origination of each wireless signal received thereafter.
In greater detail, with reference to
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In one example, the configuration tool 18 includes or is in communication with a database of vehicle and TPM sensor program software 32 for configuring and/or programming of a TPM sensor 12. In this embodiment, the central processing unit 30 is adapted to configure or program a TPM sensor 12 with suitable program software for interacting with a particular TPMS of a particular vehicle. Such programming can include communication protocols, operation instructions, or otherwise, for the TPM sensor.
Referring to
In one example, the user interface 22 further includes a keypad for manually entering an identifier of the previously installed TPM sensor 12. This is particularly advantageous when the TPM sensor 12 is non-functional or has a dead battery. The keypad 42 is in communication with the processing unit 30 of the programming tool 18. In this particular configuration, the keypad 42 is integrated with the programming tool 18. However, in an alternate configuration, the keypad 42 comprises a separate component that is in communication with the programming tool 18 through a wired or wireless connection.
In another example, as shown in
In one example, referring to
Screenshots 54 though 62 depict screens during a copy process of an identifier from a TPM sensor and screenshots 64 through 74 depict screens during a manually input process of an identifier.
With respect to copying process of an identifier from a TPM sensor, in a sixth screenshot 54, the user is directed to place a TPM sensor proximate the configuration tool 18 and press a suitable button for triggering the TPM sensor to generate a signal. In a seventh screen shot 56, the configuration tool generates the identifier received from the TPM sensor and request confirmation of the identifier. In an eighth screen shot 58, the configuration tool instructs the user to place a replacement TPM sensor proximate the configuration tool and press a suitable button when ready. In a ninth screen shot 60, the display screen 26 indicates whether to write the identifier to the replacement TPM sensor and request confirmation. In a tenth screen shot 62, the display screen confirms that the identifier has been written to the TPM sensor and offers the ability to trigger the replacement TPM sensor.
With respect to manually inputting process of an identifier for a TPM sensor, in a eleventh screen shot 64, the display screen provides the ability to select different series of characters for selection and input for a first character of an identifier. In a twelfth screen shot 66, the display screen 26 provides the ability to select a particular character from a particular series of characters for entry as a first character of the identifier. In a thirteenth screen shot 68, the display screen 26 provides the ability to repeat the process for a second character of the identifier. In a fourteenth screen shot 70, the configuration tool instructs the user to place a replacement TPM sensor proximate the configuration tool and press a suitable button when ready. In a fifteenth screen shot 72, the display screen 26 indicates weather to write the identifier to the replacement TPM sensor and request confirmation. In a sixteenth screen shot 74, the display screen confirms that the identifier has been written to the TPM sensor and offers the ability to trigger the replacement TPM sensor.
Referring again to
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The wireless transmitter 98 transmits low frequency signals such as low frequency signals in the range of about 30 to 300 kHz. In one example, transmitter 98 transmits high frequency signals such as signals commonly transmitted by TPM sensors 12 such as signals greater than about 300 MHz or in the range of about 300 MHz to 3 GHz, such as between about 315 to 433 MHz and in certain particular configurations around 315 MHz, around 433 MHz or higher.
The receiver 96 is configured for receiving wireless signals from the configuration tool 18 including an identifier. The signals received by the receiver 96 are transmitted to the processing unit 90 where it is evaluated in part through suitable software stored on the computer-readable memory device 92. Should the signal be interpreted to include an identifier then the processing unit 90 stores the identifier on the computer-readable memory device 92 or other memory device of the TPM sensor 12. Evaluation and selection of an identifier can be performed in different manners. In one example, the processing unit 90 and software stored on the computer-readable memory device 92 monitors for a particular code or other indicator that indicates that some or all of the information within the signal comprises an identifier to be utilized by the TPM sensor 12. For example, should a portion of the signal include a certain code, e.g. binary or otherwise, representative of an identifier, then the TPM sensor knows, through suitable software stored on the computer-readable memory device 92, to store the identifier included with the signal. The signal can be stored on the computer-readable memory device 92 or other memory device and subsequently transmitted with signals intended for receipt by a TPMS of a vehicle. Such signal would also include tire pressure data and/or other data commonly transmitted by a TPM sensor. In one example, the signal received by the TPM sensor 12 includes the identifier along with a configuration instructions for configuring operation of the TPM sensor 12 including transmission and data configuration protocols, program software including operating instruction for the TPM sensor, or both configuration instructions and program software.
In one example, the configuration tool 18 includes or is in communication with a database of program software and/or configuration data for programming and/or configuring of a TPM sensor 12. In this example, a central processing unit of the configuration tool 18 is adapted to program and/or configure a TPM sensor with suitable program software for interacting with a particular TPMS of a particular vehicle. The program software may include a single piece of code or multiple pieces of code. Such software or pieces of code can include communication protocols such as transmission frequency, data format or otherwise. Such software or pieces of code can alternatively include operation instructions for function of the TPM sensor. Still further, the software or pieces of code can include a combination of communication protocols and operation instruction, or otherwise.
In one example, the operating instructions includes a single software program (or routine) or multiple software programs (or routines or subroutines) for causing the sensor to operate, which may be according to original manufacturers specification for a TPM sensor or a tire pressure monitoring system. For example, it is contemplated that the one or more software programs causes: i) tire pressure to be measured, ii) temperature of air within a tire to be measured, iii) tire pressure data to be calibrated based upon temperature, iv) a signal to be generated and transmitted according to original manufacturers specification, v) analysis of signals received by a receiver of the TPM sensor, vi) generation of a response signal to a signal received by a receiver of the TPM sensor, vii) formation of communication protocols (such as data structure, computer instructions or otherwise., viii) combinations thereof, or ix) otherwise. In one example, once the TPM sensor is programmed with the program software the program software becomes permanently, or semi-permanently, embedded within a memory device of the TPM sensor to prevent change or substantial change of the program software.
In one example, the protocol comprises data structure of signals being generated and analyzed by the TPM sensor. The protocol can be implemented by program software received by or existing within a memory device the TPM sensor. The protocol may be automatically implemented when received by the TPM sensor, the protocol may include instruction for implementation, or otherwise. By example, the protocol may include one or more of: i) data structure, ii) computer instructions, iii) transmission frequency, iv) data frames per transmission, v) time periods between transmission, or vi) otherwise. In one particular example, the transmission received by the TPM sensor includes an indication that the signal comprises a protocol signal and includes communication protocol for the TPM sensor to operate, includes the data structure of signals to be generated including placement of wakeup signals, pressure data, temperature data, and/or otherwise. The signal also indicates frequency of transmission and number of frames to be transmitted per transmission, wherein each frame includes wakeup signal, pressure data, temperature data and/or otherwise. The protocol signal also indicates time periods between transmission. It should be appreciated that other communication protocols and configurations can be included.
The program software can vary based upon the vehicle make, model and/or year of manufacture. Alternatively, the program software can be configured for multiple applications, e.g. multiple vehicle makes, models and/or years of manufacture. As such, programming of the TPM sensor can include transfer of multiple communication protocols and/or operation instructions for multiple tire pressure monitoring systems. Also, programming or configuration of the TPM sensor can include selection of communication protocols and/or operation instruction from a database located with the TPM sensor.
Referring to
The method further includes the step 104 of recording an identifier transmitted by the existing TPM sensor in response to the triggering signal. In one example, the response signal is received by the receiver 21 and stored in the computer-readable memory device 24 by the central processing unit 30.
The method further includes the step 106 of utilizing the configuration tool 18 to generate a communication link with a second TPM sensor 12″. In one example, this is achieved by pressing the Program TPM Sensor with ID button 38 which interacts with the central processing unit 30 to transmit the recorded identifier to the new TPM sensor through the transmitter 20. In one example, the identifier is transmitted with program software for the TPM Sensor. Once the identifiers are transferred to the replacement TPM sensor, the sensor is triggered causing the sensor to transmit a signal that is received by a control module 78 of the TPMS 14 and electronic control unit 80 of the vehicle 16. This process is repeated for each wheel unit 76 of the vehicle 16 having the TPM sensor 12 replaced. It should be appreciated that more or less steps may be included in the methods of the present invention, as shown and described herein.
While the invention has been described with reference to a preferred embodiment it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.
The present application is related to commonly owned U.S. Non-provisional patent application titled: METHODS, SYSTEMS AND DEVICES FOR RECORDING AND TRANSMITTING IDENTIFICATION INFORMATION OF TIRE PRESSURE MONITORING SENSORS TO A VEHICLE, filed simultaneously to the present application, Docket No. 2012P01420US, and U.S. Non-provisional patent application titled: METHODS, SYSTEMS AND DEVICES FOR RECORDING AND TRANSMITTING IDENTIFICATION INFORMATION OF TIRE PRESSURE MONITORING SENSORS TO A VEHICLE, filed simultaneously to the present application, Docket No. 2012P01422US, the contents of both are hereby incorporated by reference in their entirety for all purposes.