WO2019028237A1 - Method to localize physical positions of bluetooth tire pressure monitoring sensors - Google Patents

Method to localize physical positions of bluetooth tire pressure monitoring sensors Download PDF

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Publication number
WO2019028237A1
WO2019028237A1 PCT/US2018/044981 US2018044981W WO2019028237A1 WO 2019028237 A1 WO2019028237 A1 WO 2019028237A1 US 2018044981 W US2018044981 W US 2018044981W WO 2019028237 A1 WO2019028237 A1 WO 2019028237A1
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WO
WIPO (PCT)
Prior art keywords
tpms
vehicle
wheel
bluetooth
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2018/044981
Other languages
French (fr)
Inventor
Brian J. Marlett
Michael Eric PIERFELICE
Troy Allen BARTZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aumovio Systems Inc
Original Assignee
Continental Automotive Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Systems Inc filed Critical Continental Automotive Systems Inc
Publication of WO2019028237A1 publication Critical patent/WO2019028237A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0415—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels
    • B60C23/0416—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B60C23/0435—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender
    • B60C23/0437—Means for detecting electromagnetic field changes not being part of the signal transmission per se, e.g. strength, direction, propagation or masking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G07C2009/00317—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks keyless data carrier having only one limited data transmission range
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • Bluetooth Low Energy or "'BLfcT is a wireless, personal-area network technology designed and marketed by the Bluetooth special interest group. It is used in many industries. Bluetooth Low Energy uses considerably less power and is less costly than classic Bluetooth but has a similar communication range.
  • Bluetooth Low Energy transceivers inside a tire transmit Bluetooth
  • Tire pressure monitoring sensors in a tire sometimes need to be replaced- Since tire pressure monitoring sensors communicate wireiessly with a controller, the controller needs to know where each sensor is located on the vehicle. Stated another way, when a tire pressure monitoring sensor is replaced, a method of automatically determining where each sensor is located on the vehicle would be an improvement over the prior art.
  • FIG. I is a depiction of a motor vehicle and the locations of Bluetooth low energy antenna modules attached to the vehicle at different locations;
  • FIG. 2 depicts tables of received signal strength indicators (R.SSl) received by a controller depicted in FIG. 1 :
  • PIG. 4 is a depiction of an apparatus that can perform the method steps shown in
  • FIG. 1 is a top or plan view of a motor vehicle 100.
  • the vehicle 100 has a front hood 102. a windshield 104 and a rear windshield 106.
  • a Bluetooth low energy tire pressure monitoring sensor or 'BLE -TPMS" 108, 1 10, U2 and ⁇ 4 is located inside each vehicle tire 109, I N . 1 13 and 1 ) 5.
  • BLEAMi Bluetooth Low Energy antenna modules 1 16, 1 18. 120, 122, 126. 128, 130, 132. 134, 136. 1 38 and 140 are located at pre-deier mined locations on the vehicle. (That there were 13 BLEAMS was a design choice due to vehicle characteristics. Other numbers of BLEAMS can be used too.)
  • Bluetooth low energy antenna modules 1 16, 1 18» 120 and 122 are located on the left or driver's side portion of the vehicle 100 between the two leftside tires 109, 1 15.
  • four Bluetooth low energy antenna modules 130, 132, 134 and 136 are located on the right or passenger side of the vehicle between the two tires. 1 i J . I i 3 on the right side.
  • a Bluetooth low energy antenna module 126 is located at the from of a passenger compartment and another Bluetooth low energy antenna module 128 is located at the rear portion of the passenger compartment.
  • Two other Bluetooth low energy antenna modules 138 and 140 are located at the rear of the vehicle behind the rear windshield 106.
  • the strength of a signal transmitted from one of the Bluetooth low energy tire pressure monitoring sensors 108. 1 10, 1 i2 ⁇ 1 14 at a BLEAM will vary with its distance to that BLEAM.
  • the received signal strength indicators (R.SS1) from each Bluetooth low energy antenna module (BLEAM) is obtained during the vehicle's manufacturing process for a typical or standard tire pressure monitoring sensor located in each tire. That; time-of-manufacture RSSI data shows how signals from the tire pressure monitoring sensors in the different tires are blocked or attenuated due to vehicle characteristics.
  • Each vehicle style therefore preferably has its own record of the received signal strength indicator from each tire pressure monitoring sensor for multiple different angles of rotation of each wheel.
  • FIG. 2 depicts four tables 202, 204, 206 and 208 of received signal strength indicator values.
  • the indicator values are obtained or received from each of the Bluetooth Low Energy Antenna Modules ibr tire rotation angles that vary between 5 degrees and 360 degrees of rotation at the time of the vehicle's manufacture or assembly.
  • a group or collection of reference tire pressure monitoring sensor signals is thus obtained for each vehicle wheel/tire assembly by transmitting a signal from each fire pressure, and monitoring the RSSI provided by each of the thirteen Bluetooth low energy transceivers 1 16- 140 in response to the signals transmitted from each tire.
  • each received signal strength indicator value obtained at each five-degree increment of wheel rotation is recorded in a table.
  • the tables are stored in or accessible to a processor (See element 402 in FIG. 4.) on the vehicle. Stated another way, tables of recorded RSSI values for the fire pressure monitoring sensor in each wheel is recorded Ibr a particular vehicle, when the vehicle is assembled.
  • FIG. 3 depicts steps of a method 300 for determining where a replacement
  • Bluetooth Low Energy (BLR) Tire Pressure Monitoring System (TPMS) sensor is located on a particular wheel of a particular vehicle.
  • BLR Bluetooth Low Energy
  • TPMS Tire Pressure Monitoring System
  • a replacement Bluetooth TPMS sensor must of course he capable of transmitting a Bluetooth-compliant signal. As is known, such a signal will be received by ail of the Bluetooth transceivers w ithin the signal's propagation range.
  • TPMS sensor signals are received at the different Blue Tooth
  • BLEAMs Low Energy Antenna Modules
  • the left front wheel TPMS sensor will have associated with it, a table of received signal strength indicators for each of the Bluetooth Low Energy Antenna Modules (BLEAMs).
  • BLEAMs Bluetooth Low Energy Antenna Modules
  • Each BLEA.M will thus' generate a corresponding table of received signal strength indicator values for each tire pressure monitoring sensor in each wheel.
  • each BLEAM a signal from the replacement TPMS is received by each BLEAM and preferably for multiple different rotation angles of the wheel where the replacement T PMS was installed.
  • each BI..EAM will have its own received signal strength indicator (RSSI) tor each of the second signals traasmitied from the replacement TP.MS with a corresponding RSSI value.
  • RSSI received signal strength indicator
  • the different RSSI values from each Bluetooth transceiver for the second signal that is transmitted by the replacement TPMS is compared to the table values.
  • the location of the replacement TPMS is thus determined by comparing the recorded RSSI values for the replacement TPMS to the table values recorded at the time of manufacture that most closely resemble the RSSI table values for the replacement ITMS.
  • the method of claim 1 is performed with 13 Bluetooth low energy transceivers.
  • PIG. 4 depicts a motor vehicle 400 configured to determine where a replacement Bluetooth tire pressure monitoring system (TPMS) sensor is located.
  • the apparatus includes a reference TPMS signal strength information determiner 402, preferably embodied as a processor that executes program instructions. Those instructions are selected to cause the processor to receive information-bearing signals from several BLE Antenna Modules (BLEA.MV) 406 located through-out the vehicle.
  • BLEA.MV BLE Antenna Modules
  • the information-bearing signals from the BLKAMs represent signals that are received by each BLEAM from each of the tire pressure monitoring sensors 408 inside each tire.
  • the RSSb from each BLEAM for each TPMS sensor 408 in each tire are recorded for several different wheel rotation angles and stored in tables by the determiner 402.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'invention concerne la détermination de l'emplacement d'un capteur de pression de pneu de rechange pour un système de surveillance de pression de pneu par comparaison des valeurs d'un indicateur d'intensité de signal reçu (RSSI) pour le capteur de remplacement telles qu'elles sont reçues par plusieurs récepteurs différents avec un réseau de valeurs RSSI stockées fournies par chaque capteur au niveau de chaque roue par les mêmes récepteurs lorsque le véhicule est fabriqué.The invention relates to determining the location of a spare tire pressure sensor for a tire pressure monitoring system by comparing the values of a received signal strength indicator (RSSI) for the tire pressure sensor. replacement as received by a plurality of different receivers with a network of stored RSSI values provided by each sensor at each wheel by the same receivers when the vehicle is manufactured.

Description

Method to Localise Physical Positions of Bluetooth Tire Pressure Monitoring Sensors
Background
[0001] Bluetooth Low Energy or "'BLfcT is a wireless, personal-area network technology designed and marketed by the Bluetooth special interest group. It is used in many industries. Bluetooth Low Energy uses considerably less power and is less costly than classic Bluetooth but has a similar communication range.
[0002] Bluetooth Low Energy technology is becoming more prevalent in vehicle system*. It is also now being used with tire pressure monitoring systems (TPMS),
[0003] In a TPMS, Bluetooth Low Energy transceivers inside a tire transmit Bluetooth
Low Energy signals that carry tire pressure information. Those BLE signals are received by a controller on the vehicle. When a controller on a vehicle receives multiple different TPMS sensor signals from multiple different TPMS sensors in different tires, the controller needs to be able to ^know" or identify a particular TPMS sensor from which a BLE signal came from so that the controller and the Bluetooth low energy TPMS systems can provide real-time information about actual tire pressure w ith respect to their physical location on the vehicle.
[0004] Tire pressure monitoring sensors in a tire sometimes need to be replaced- Since tire pressure monitoring sensors communicate wireiessly with a controller, the controller needs to know where each sensor is located on the vehicle. Stated another way, when a tire pressure monitoring sensor is replaced, a method of automatically determining where each sensor is located on the vehicle would be an improvement over the prior art.
Brief Description of the Figures
[0005] FIG. I is a depiction of a motor vehicle and the locations of Bluetooth low energy antenna modules attached to the vehicle at different locations;
[0006] FIG. 2 depicts tables of received signal strength indicators (R.SSl) received by a controller depicted in FIG. 1 :
[0007] PIG. 3 Ί& a flow chart depicting steps of a method of determining a particular wheel where a replacement Bluetooth tire pressure monitoring sensor is located on a particular type of vehicle; and
[0008] PIG. 4 is a depiction of an apparatus that can perform the method steps shown in
FIG, .3.
Detailed Description
[0009] FIG. 1 is a top or plan view ofa motor vehicle 100. The vehicle 100 has a front hood 102. a windshield 104 and a rear windshield 106. A Bluetooth low energy tire pressure monitoring sensor or 'BLE -TPMS" 108, 1 10, U2 and Π 4 is located inside each vehicle tire 109, I N . 1 13 and 1 ) 5.
[0010] In the preferred embodiment, thirteen (13) Bluetooth Low Energy antenna modules (BLEAMi) 1 16, 1 18. 120, 122, 126. 128, 130, 132. 134, 136. 1 38 and 140 are located at pre-deier mined locations on the vehicle. (That there were 13 BLEAMS was a design choice due to vehicle characteristics. Other numbers of BLEAMS can be used too.)
[0011] As shown in FIG. I, four Bluetooth low energy antenna modules 1 16, 1 18» 120 and 122 are located on the left or driver's side portion of the vehicle 100 between the two leftside tires 109, 1 15. Similarly, four Bluetooth low energy antenna modules 130, 132, 134 and 136 are located on the right or passenger side of the vehicle between the two tires. 1 i J . I i 3 on the right side. A Bluetooth low energy antenna module 126 is located at the from of a passenger compartment and another Bluetooth low energy antenna module 128 is located at the rear portion of the passenger compartment. Two other Bluetooth low energy antenna modules 138 and 140 are located at the rear of the vehicle behind the rear windshield 106.
[0012] As is well known, the strength of a signal transmitted from one of the Bluetooth low energy tire pressure monitoring sensors 108. 1 10, 1 i2< 1 14 at a BLEAM will vary with its distance to that BLEAM. In a preferred embodiment of the invention, the received signal strength indicators (R.SS1) from each Bluetooth low energy antenna module (BLEAM) is obtained during the vehicle's manufacturing process for a typical or standard tire pressure monitoring sensor located in each tire. That; time-of-manufacture RSSI data shows how signals from the tire pressure monitoring sensors in the different tires are blocked or attenuated due to vehicle characteristics. Each vehicle style therefore preferably has its own record of the received signal strength indicator from each tire pressure monitoring sensor for multiple different angles of rotation of each wheel. T he time-of-manufacture RSSI data thus provides a model of how the RSSis should be when a TPMS sensor is replaced. [0013] FIG. 2 depicts four tables 202, 204, 206 and 208 of received signal strength indicator values. The indicator values are obtained or received from each of the Bluetooth Low Energy Antenna Modules ibr tire rotation angles that vary between 5 degrees and 360 degrees of rotation at the time of the vehicle's manufacture or assembly. A group or collection of reference tire pressure monitoring sensor signals is thus obtained for each vehicle wheel/tire assembly by transmitting a signal from each lire pressure, and monitoring the RSSI provided by each of the thirteen Bluetooth low energy transceivers 1 16- 140 in response to the signals transmitted from each tire.
[0014] As can be seen in FIG. 2. each received signal strength indicator value obtained at each five-degree increment of wheel rotation is recorded in a table. The tables are stored in or accessible to a processor (See element 402 in FIG. 4.) on the vehicle. Stated another way, tables of recorded RSSI values for the lire pressure monitoring sensor in each wheel is recorded Ibr a particular vehicle, when the vehicle is assembled.
[0015] FIG. 3 depicts steps of a method 300 for determining where a replacement
Bluetooth Low Energy (BLR) Tire Pressure Monitoring System (TPMS) sensor is located on a particular wheel of a particular vehicle. A replacement Bluetooth TPMS sensor must of course he capable of transmitting a Bluetooth-compliant signal. As is known, such a signal will be received by ail of the Bluetooth transceivers w ithin the signal's propagation range.
[0016] At a first step 302. TPMS sensor signals are received at the different Blue Tooth
Low Energy Antenna Modules (BLEAMs) from each wheel/tire. At the next step 304, the signal strength of each signal transmitted by each TPMS sensor in each wheel/tire at each of several different wheel rotation angles is recorded and .stored in a table for each wheel.
[0017] For example, the left front wheel TPMS sensor will have associated with it, a table of received signal strength indicators for each of the Bluetooth Low Energy Antenna Modules (BLEAMs). Each BLEA.M will thus' generate a corresponding table of received signal strength indicator values for each tire pressure monitoring sensor in each wheel.
[0018] At step. 306, which is performed after a TPMS sensor is replaced, a signal from the replacement TPMS is received by each BLEAM and preferably for multiple different rotation angles of the wheel where the replacement T PMS was installed. As should be known, each BI..EAM will have its own received signal strength indicator (RSSI) tor each of the second signals traasmitied from the replacement TP.MS with a corresponding RSSI value.
[0019] At step 308, the different RSSI values from each Bluetooth transceiver for the second signal that is transmitted by the replacement TPMS is compared to the table values. The location of the replacement TPMS is thus determined by comparing the recorded RSSI values for the replacement TPMS to the table values recorded at the time of manufacture that most closely resemble the RSSI table values for the replacement ITMS.
[0020] In a preferred embodiment, the method of claim 1 is performed with 13 Bluetooth low energy transceivers.
[002] j Finally, PIG. 4 depicts a motor vehicle 400 configured to determine where a replacement Bluetooth tire pressure monitoring system (TPMS) sensor is located. The apparatus includes a reference TPMS signal strength information determiner 402, preferably embodied as a processor that executes program instructions. Those instructions are selected to cause the processor to receive information-bearing signals from several BLE Antenna Modules (BLEA.MV) 406 located through-out the vehicle. The information-bearing signals from the BLKAMs represent signals that are received by each BLEAM from each of the tire pressure monitoring sensors 408 inside each tire. The RSSb from each BLEAM for each TPMS sensor 408 in each tire are recorded for several different wheel rotation angles and stored in tables by the determiner 402.
[0022] Those of ordinary skill in the art should recognize the advantages of being able to replace a lire pressure monitoring sensor and have the vehicle automatically determine the particular wheel where the replacement TPMS is located. The foregoing description is for purposes of illustration only. The true scope of the invention is set. forth in the following claims.

Claims

What is claimed is:
1. A method of determining a particular wheel where a replacement Bluetooth tire pressure monitoring system (TPMS) sensor is located on a particular type of vehicle, the replacement Bluetooth TPMS sensor being capable of transmitting a Bluetooth-compliant radio frequency•signal to a plurality of Bluetooth Low Energy Antenna Modules (BLEAMs) mounted at predetermined locations on the particular type of vehicle the method comprising:
obtaining reference T PMS sensor signal strength information for each vehicle wheel TPMS sensor by :
receiving at each B1..EAM, a first signal from each TPMS sensor in each tire;
determining a received signal strength indicator (RSSl) for each BLKAM for each TPMS sensor in each tire;
for each RSSl value obtained tor the first signal transmitted from each TPMS attached to each wheel, recording the RSSl values for each wheel's TPMS into a table of RSSl values for each wheel's TPMS;
storing the tables of recorded RSSl values for the wheels in a processor on the vehicle;
when a TPMS on the vehicle wheel is replaced:
receiving a second signal from the replacement TPMS at each BI..EAM: obtaining a received signal strength indicator (RSSl) from each ΒΓ.ΕΛΜ mounted on the vehicle for the second signal;
comparing the RSSl values from each BI..EAM to RSSJ values recorded in each table for the first signal; and identifying the particular wheel where the replacement TPMS is located as corresponding to the recorded RSSI values that are closest to the recorded RSSI values for the first signal
2. The method of claim I, wherein the method uses thirteen transceivers.
3. The method of claim 1 , wherein the vehicle has two w heels on each side of the vehicle and wherein two Bluetooth transceivers are located between the wheels on each side of the vehicle.
4. The method of claim 3, wherein the vehicle has a rear windshield ami wherein two Bluetooth transceivers are located behind the rear windshield.
5. The method claim 4, wherein the vehicle has a passenger compartment and wherein a first Bluetooth transceiver is located at a front portion of the passenger compartment and wherein a second Bluetooth transceiver is located at a rear portion of the passenger compartment.
6. A motor vehicle configured to determine a particular wheel where a replacement Bluetooth tire pressure monitoring sensor (TPMS) is located, the replacement Bluetooth TPMS being capable of transmitting a Bluetooth-compliant radio frequency signal to a plurality of Bluetooth transceivers mounted at predetermined locations on the particular type of vehicle the vehicle comprising:
a reference TPMS signal strength information determiner configured to:
receive information from the TPMS sensor attached to each wheel of the vehicle at each of several Bluetooth transceivers on the vehicle;
obtain a received signal strength indicator (RSSI) from each of the plurality of Bluetooth transceivers mounted on the vehicle, for a first signal transmitted from the TPMS attached to each wheel of the vehicle and for each RSSI value obtained for the first signal transmitted from each TPMS attached to each wheel* record the RSSI values for each wheel's TPMS into a table of RSSI values tor each wheel's TPMS: and store the tables of recorded RSSl values for the wheels in a processor on the vehicle;
when a TPMS on the vehicle wheel is replaced:
the .determiner being configured to receive a second signal from the replacement: TPMS;
obtain a received signal strength indicator (RSSl) from each of the plurality of Bluetooth transceivers mounted on the vehicle for the second signal; compare the RSSl from each Bluetooth transceiver for the second signal transmitted by the replacement TPMS, to the values recorded in each table for the first signal; and
identify the particular wheel where the replacement TPMS is located as corresponding to the recorded RSSl values that are closest to the recorded RSSl values for the first signal
PCT/US2018/044981 2017-08-03 2018-08-02 Method to localize physical positions of bluetooth tire pressure monitoring sensors Ceased WO2019028237A1 (en)

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US15/667,852 2017-08-03
US15/667,852 US9950577B1 (en) 2017-08-03 2017-08-03 Method to localize physical positions of Bluetooth tire pressure monitoring sensors

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