WO2016088865A1 - 車載報知装置及び報知システム - Google Patents

車載報知装置及び報知システム Download PDF

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Publication number
WO2016088865A1
WO2016088865A1 PCT/JP2015/084102 JP2015084102W WO2016088865A1 WO 2016088865 A1 WO2016088865 A1 WO 2016088865A1 JP 2015084102 W JP2015084102 W JP 2015084102W WO 2016088865 A1 WO2016088865 A1 WO 2016088865A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
air pressure
tire
height
notification
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/JP2015/084102
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English (en)
French (fr)
Japanese (ja)
Inventor
則親 大見
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.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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 Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to CN201580062166.9A priority Critical patent/CN107107686B/zh
Priority to US15/532,933 priority patent/US9956833B2/en
Publication of WO2016088865A1 publication Critical patent/WO2016088865A1/ja
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
    • B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
    • 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
    • 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
    • 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
    • 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
    • B60C23/0438—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender comprising signal transmission means, e.g. for a bidirectional communication with a corresponding wheel mounted receiver
    • B60C23/044—Near field triggers, e.g. magnets or triggers with 125 KHz
    • 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
    • B60C23/0447—Wheel or tyre mounted circuits
    • B60C23/0455—Transmission control of wireless signals
    • B60C23/0461—Transmission control of wireless signals externally triggered, e.g. by wireless request signal, magnet or manual switch

Definitions

  • the present application relates to an in-vehicle notification device that performs notification according to air pressure information related to air pressure in a plurality of tires provided in a vehicle, and a notification system including the notification device.
  • the TPMS includes a transmitting device that detects the tire air pressure, wirelessly transmits the detected air pressure, and an in-vehicle notification device that receives the air pressure wirelessly transmitted from the transmitting device and performs notification according to the received air pressure.
  • the transmission device is disposed on a tire wheel provided in the vehicle, and detects the air pressure of the tire mounted on the tire wheel.
  • the in-vehicle notification device notifies the user that the received air pressure is the air pressure of the tire from which the air pressure is detected.
  • a TPMS (tire pressure monitoring device) described in Patent Literature 1 has means for registering in a memory a tire identification code for identifying each of a plurality of tires provided in a vehicle, and means for judging that a tire has been replaced. Is provided.
  • the TPMS updates the tire identification code registered in the memory. Therefore, the TPMS described in Patent Document 1 updates the tire identification code to update the correspondence between the received air pressure and the tire even when the position of the tire relative to the vehicle changes due to, for example, tire rotation. Can be prevented. Therefore, the TPMS described in Patent Document 1 can notify the air pressure without erroneously detecting the tire from which the air pressure is detected.
  • the means for determining that the tire has been replaced is a contact switch or infrared switch provided on the axle in order to determine whether or not the tire wheel is attached to the vehicle. Etc. need to be used. Therefore, the TPMS of Patent Document 1 has a problem that the cost for configuring the system increases due to the necessity of providing a special configuration.
  • the air pressure monitoring device it is necessary for the air pressure monitoring device to receive the signal transmitted according to the operating state of the centrifugal force sensor provided in the transmission device (tire pressure sensor). Therefore, in the TPMS of Patent Document 1, if the air pressure monitoring device cannot receive the signal, it cannot be determined that the tire has been replaced, and there is a correspondence between the received air pressure and the tire from which the air pressure is detected. There is a risk of erroneous notification due to mistakes.
  • the purpose of the present application is to prevent an error in notification according to the acquired air pressure information when the air pressure information related to the air pressure of each of a plurality of tires provided in the vehicle is acquired, and to increase the cost of the configuration It is providing the vehicle-mounted alerting
  • the in-vehicle notification device includes an identification information for identifying each of a plurality of tires provided in a vehicle, and an air pressure information acquisition unit that acquires air pressure information related to the air pressure of each of the plurality of tires, An in-vehicle notification device that performs notification according to identification information and air pressure information acquired by the air pressure information acquisition unit, and stores a plurality of tire mounting positions in association with identification information for identifying each tire
  • a vehicle height acquisition unit that acquires the vehicle height of the vehicle, a vehicle height determination unit that determines whether the vehicle height acquired by the vehicle height acquisition unit is equal to or higher than a predetermined height, and the vehicle height determination When it is determined that the portion is not higher than a predetermined height, the tire mounting position stored in the storage unit in association with the identification information acquired by the air pressure information acquisition unit, and the tire acquired by the air pressure information acquisition unit According to the air pressure information To notify the distribution, when the vehicle height determination unit is equal to or more than the predetermined height, and a notification unit that does not
  • a notification system includes the above-described vehicle-mounted notification device, and a plurality of tire wheels provided in the vehicle, each of which detects air pressure of a corresponding tire, and includes air pressure information including the detected air pressure, and A plurality of transmission devices that transmit identification information for identifying the tire, and the air pressure information acquisition unit acquires the air pressure information and the identification information transmitted from the plurality of transmission devices.
  • this application is not only realizable as a vehicle-mounted alerting
  • An in-vehicle notification device includes an air pressure information acquisition unit that acquires identification information for identifying each of a plurality of tires provided in a vehicle and air pressure information relating to the air pressure of each of the plurality of tires.
  • An in-vehicle notification device that performs notification according to identification information and air pressure information acquired by the air pressure information acquisition unit, and stores the mounting positions of the plurality of tires in association with identification information for identifying each tire.
  • a vehicle height acquisition unit that acquires the vehicle height of the vehicle, a vehicle height determination unit that determines whether the vehicle height acquired by the vehicle height acquisition unit is equal to or higher than a predetermined height, When the vehicle height determination unit determines that the vehicle height is not equal to or higher than a predetermined height, the tire mounting position stored in the storage unit in association with the identification information acquired by the air pressure information acquisition unit, and the air pressure information acquisition unit Depending on the tire pressure information And notifying information, when the vehicle height determination unit is equal to or more than the predetermined height, and a notification unit that does not report the information corresponding to the mounting position of at least the tire.
  • the storage unit stores the mounting positions of a plurality of tires in association with identification information for identifying each tire.
  • the vehicle height acquisition unit acquires the height of the vehicle height.
  • the vehicle height determination unit determines whether the vehicle height acquired by the vehicle height acquisition unit is equal to or higher than a predetermined height.
  • the notification unit includes the tire mounting position stored in the storage unit in association with the acquired identification information and the acquired tire pressure information. The corresponding information is notified. Therefore, the in-vehicle notification device can determine whether or not the tire has been replaced based on the acquired vehicle height, and changes the notification mode depending on whether or not any of the plurality of tires provided in the vehicle has been replaced.
  • the in-vehicle notification device When any tire is not replaced, the in-vehicle notification device notifies the tire mounting position and information according to the air pressure of the tire, and when any tire is replaced, for example, An error in notification can be prevented by not performing notification for each mounting position.
  • the in-vehicle notification device uses a configuration capable of detecting a vehicle height mounted on a general vehicle such as a vehicle height sensor used for control related to optical axis adjustment of a headlight, pressure control of an air suspension, etc. It is possible to suppress an increase in cost during configuration.
  • the notification unit is configured to notify information according to tire pressure information acquired by the air pressure information acquisition unit when the vehicle height determination unit determines that the vehicle height determination unit is greater than or equal to a predetermined height. Is preferred.
  • the notification unit when the vehicle height determination unit determines that the vehicle height determination unit is equal to or higher than the predetermined height, the notification unit notifies information corresponding to the tire air pressure information acquired by the air pressure information acquisition unit. Therefore, even if any of the tires is replaced, the in-vehicle notification device can notify the information according to the acquired air pressure without performing notification for each mounting position. improves.
  • An air pressure threshold determination unit that determines whether or not the air pressure represented by the acquired air pressure information is equal to or less than a predetermined threshold is provided, and the notification unit includes the vehicle height determination unit that is equal to or higher than a predetermined height. If it is determined, the configuration in which the determination result of the air pressure threshold determination unit is notified is preferable.
  • the air pressure threshold determination unit determines whether or not the air pressure represented by the acquired air pressure information is equal to or less than a predetermined threshold.
  • reports the determination result of an air-pressure threshold value determination part, when it determines with a vehicle height determination part being more than predetermined height. Therefore, for example, when any of a plurality of tires is replaced, the in-vehicle notification device can prevent a notification error by not reporting information corresponding to the tire pressure for each tire mounting position. . Further, even when the vehicle tire is replaced, the user can know that the air pressure of at least one of the tires has decreased. Therefore, convenience for the user can be improved.
  • the vehicle height acquisition unit repeatedly acquires the vehicle height of the vehicle, and the vehicle height determination unit determines whether the vehicle height acquired repeatedly by the vehicle height acquisition unit is a predetermined time or A configuration in which it is determined whether or not it is equal to or higher than the predetermined height continuously for a predetermined number of times.
  • the vehicle height acquisition unit repeatedly acquires the vehicle height of the vehicle.
  • the vehicle height determination unit determines whether or not the vehicle height repeatedly acquired by the vehicle height acquisition unit is a predetermined height or more continuously for a predetermined time or a predetermined number of times. Accordingly, the in-vehicle notification device determines whether or not the tire has been replaced more accurately by determining that the tire has been replaced when the height of the vehicle is continuously higher than a predetermined height. Can be determined.
  • a notification system is arranged on each of the above-described vehicle-mounted notification device and a plurality of tire wheels provided in the vehicle, detects the air pressure of the corresponding tire, and includes air pressure information including the detected air pressure. And a plurality of transmission devices that transmit identification information for identifying the tire, and the air pressure information acquisition unit acquires the air pressure information and the identification information transmitted from the plurality of transmission devices.
  • the plurality of transmission devices are respectively provided in a plurality of tires provided in the vehicle, and detect the air pressure of the provided tires.
  • the plurality of transmission devices transmit air pressure information including the detected air pressure and identification information for identifying the tire.
  • the above-mentioned in-vehicle notification device acquires air pressure information and identification information transmitted from a plurality of transmission devices. Therefore, the in-vehicle notification device can change the notification mode depending on whether any of the plurality of tires provided in the vehicle has been replaced.
  • the in-vehicle notification device notifies the tire mounting position and information according to the air pressure of the tire, and when any tire is replaced, for example, An error in notification can be prevented by not performing notification for each mounting position.
  • the in-vehicle notification device uses a configuration capable of detecting a vehicle height mounted on a general vehicle such as a vehicle height sensor used for control related to optical axis adjustment of a headlight, pressure control of an air suspension, etc. It is possible to suppress an increase in cost during configuration.
  • FIG. 1 is a schematic diagram showing a configuration example of a notification system in the present embodiment.
  • the notification system includes an in-vehicle notification device 1 provided in the vehicle C and a transmission device 2 attached to each tire wheel to which a tire 3 provided in the vehicle C is attached.
  • the vehicle-mounted notification device 1 acquires the air pressure of each tire 3 by performing wireless communication with each transmission device 2, and performs notification according to the acquired air pressure.
  • the in-vehicle informing device 1 is an in-vehicle device such as an ECU (Electronic Control Unit) disposed in the lower part of the driver's seat of the vehicle C, for example. 2 to send.
  • ECU Electronic Control Unit
  • the transmission device 2 detects the air pressure of the tire 3 attached to the attached tire wheel in response to a request signal from the in-vehicle notification device 1, and uses the detected air pressure and a device ID described later as a UHF band (Ultra (High Frequency) band. Is transmitted to the in-vehicle notification device 1 by radio waves.
  • a UHF band Ultra (High Frequency) band.
  • the LF band and the UHF band are examples of a radio wave band used when performing wireless communication, and are not necessarily limited thereto.
  • FIG. 2 is a block diagram illustrating a configuration of the transmission device 2.
  • the transmission device 2 includes a control unit 21.
  • the control unit 21 includes a CPU 21a that controls the operation of each component.
  • the CPU 21a includes, for example, one or a plurality of CPUs (Central / Processing / Units), a multi-core CPU, and the like.
  • the CPU 21a is connected to a storage unit 21b, a temporary storage unit 21c, an input / output I / F 21d, and a communication I / F 21e via a bus.
  • the CPU 21a reads a later-described control program stored in the storage unit 21b and controls each unit.
  • the transmission device 2 includes a battery (not shown), and operates with electric power from the battery.
  • the storage unit 21b is a nonvolatile memory such as an EEPROM (ElectricallyrErasable Programmable ROM) or a flash memory.
  • the storage unit 21b stores a control program for the CPU 21a to perform processing.
  • the control program is a computer program in which the processing content when the transmission device 2 communicates with the in-vehicle notification device 1 and the processing content when each unit is controlled are described.
  • the storage unit 21b stores a device ID for identifying the transmission device 2.
  • the transmission device 2 in the present embodiment is uniquely provided for each tire 3, and the device ID is also information for identifying the tire 3.
  • the temporary storage unit 21c is a memory such as SRAM (Static RAM) or DRAM (Dynamic RAM).
  • SRAM Static RAM
  • DRAM Dynamic RAM
  • a pressure sensor 22 is connected to the input / output I / F 21d.
  • the pressure sensor 22 includes, for example, a diaphragm, and detects the absolute pressure (air pressure) of the tire 3 based on the deformation amount of the diaphragm that changes depending on the magnitude of the pressure.
  • Absolute pressure is the magnitude of pressure relative to absolute vacuum.
  • the air pressure detected by the pressure sensor 22 is an absolute pressure, but it may be configured to detect a differential pressure indicating the magnitude of the pressure relative to a gauge pressure or a predetermined reference pressure.
  • the predetermined reference pressure is, for example, a median value, a lower limit value, an upper limit value, or the like of the range of air pressure when the tire 3 does not require inspection.
  • the pressure sensor 22 outputs the air pressure of the tire 3 detected via the input / output I / F 21d to the CPU 21a.
  • the CPU 21a generates a signal including the air pressure of the tire 3 and the device ID stored in the storage unit 21b by executing the control program.
  • the communication I / F 21e is connected to a transmission unit 23 to which an RF transmission antenna 25 is connected and a reception unit 24 to which an LF reception antenna 26 is connected.
  • the transmission unit 23 modulates the signal generated by the CPU 21 a into a signal in the UHF band frequency band, and transmits the modulated signal from the RF transmission antenna 25.
  • the receiving unit 24 receives a request signal transmitted from the in-vehicle notification device 1 using radio waves in the LF band via the LF receiving antenna 26, and outputs the received signal to the CPU 21a.
  • FIG. 3 is a block diagram showing the configuration of the in-vehicle notification device 1.
  • the in-vehicle notification device 1 includes a control unit 11, and the control unit 11 includes a CPU 11a that controls the operation of each component.
  • the CPU 11a is composed of, for example, one or a plurality of CPUs, a multi-core CPU, and the like.
  • the CPU 11a is connected to a storage unit 11b, a temporary storage unit 11c, a communication I / F 11d, a timing unit 11e, and an input / output I / F 11f via a bus.
  • CPU11a reads the below-mentioned control program memorize
  • the storage unit 11b is a non-volatile memory capable of rewriting information, such as an EEPROM or a flash memory.
  • the storage unit 11b stores a control program for the CPU 11a to perform processing.
  • the control program is a computer program in which processing contents when communicating with a plurality of transmission devices 2 such as generation of request signals and processing contents when controlling each unit are stored.
  • the correspondence table 12 is stored in the storage unit 11b.
  • the correspondence table 12 is a table in which the correspondence relationship between the mounting positions of the plurality of tires 3 and the device IDs of the transmission devices 2 arranged in the respective tires 3 is stored, which will be described later.
  • the temporary storage unit 11c is a memory such as SRAM or DRAM.
  • the temporary storage unit 11c temporarily stores various data generated by the CPU 11a performing processing based on the control program.
  • the communication I / F 11d is connected to a transmission unit 13 connected to the LF transmission antenna 18 and a reception unit 14 connected to the RF reception antenna 19.
  • the transmission unit 13 modulates the request signal generated by the CPU 11 a to a signal having a frequency other than the LF band, and transmits the modulated signal from the LF transmission antenna 18.
  • the receiving unit 14 receives a signal transmitted from each of the plurality of transmitting devices 2 using radio waves in the UHF band via the RF receiving antenna 19, and outputs the received signal to the CPU 11a.
  • One LF transmission antenna 18 may be provided in the in-vehicle notification device 1, or a plurality of LF transmission antennas 18 may be provided at positions close to each tire 3.
  • the timer unit 11e is constituted by, for example, a timer, a real-time clock, etc., starts timing according to the control of the CPU 11a, and gives the timing result to the CPU 11a.
  • the input / output I / F 11f is connected with a notification unit 15, a vehicle height sensor 16, and a vehicle speed sensor 17.
  • the notification unit 15 is, for example, a warning light provided on an instrument panel in front of the driver's seat, a car navigation display screen, a vehicle-mounted speaker, and the like, and notifies information related to the air pressure of the plurality of tires 3.
  • CPU11a switches the alerting
  • the vehicle height sensor 16 is provided, for example, in the suspension of each tire wheel of the vehicle C, and outputs a voltage corresponding to the amount of expansion / contraction of the suspension to the CPU 11a.
  • the vehicle height sensor 16 is used for control related to the optical axis adjustment of a headlight provided in the vehicle C, and is used for pressure control when the suspension is an air suspension.
  • the CPU 11a detects the height of the vehicle C based on the voltage. At this time, the CPU 11a functions as a vehicle height acquisition unit by executing a control program.
  • the vehicle height sensor 16 may be configured to output information related to the vehicle height of the vehicle C to the CPU 11a.
  • the vehicle height sensor 16 directly detects the vehicle height of the vehicle C and outputs the detected vehicle height information to the CPU 11a. Alternatively, information related to the vehicle height other than the amount of expansion and contraction of the suspension may be output to the CPU 11a.
  • the vehicle speed sensor 17 is provided on the axle of the vehicle C, for example, and outputs a pulse signal corresponding to the rotation of the axle to the CPU 11a.
  • the CPU 11a detects the height of the vehicle C based on the pulse signal. Any vehicle speed sensor 17 may be used as long as it can output information related to the vehicle speed such as the vehicle speed or wheel speed of the vehicle C to the CPU 11a.
  • FIG. 4 is an explanatory diagram showing a specific example of the correspondence table 12.
  • the correspondence table 12 stores the mounting position of the tire 3 identified by each device ID for each device ID.
  • the tire 3 identified by the device ID 1 is provided in front of the vehicle C.
  • the tire 3 identified by the device ID2 is provided at the right rear of the vehicle C
  • the tire 3 identified by the device ID3 is provided at the left front of the vehicle C
  • the tire 3 identified by the device ID4 is the vehicle C. Located on the left rear.
  • the correspondence table 12 may have any data structure as long as the device ID and the mounting position of the tire 3 identified by the device ID can be associated with each other and stored in the storage unit 11b.
  • the in-vehicle notification device 1 updates the correspondence table 12 when, for example, the vehicle C starts traveling after determining that any of the tires 3 has been replaced.
  • the in-vehicle notification device 1 updates the correspondence table 12 based on, for example, the phase difference of the tire wheel in the vehicle C at a predetermined time interval, the received signal strength of the UHF band radio wave transmitted from the transmission device 2, and the like.
  • the correspondence table 12 is updated based on the phase difference of the tire wheel is shown below.
  • the update of the correspondence table 12 may be other than the example shown below.
  • the in-vehicle notification device 1 detects information related to the rotation angle of each tire wheel of the vehicle C by a sensor or the like used for ABS (Antilock Brake System), and based on the detected information, the position of each tire wheel at a predetermined time interval is detected. Calculate the phase difference. Further, the transmission device 2 detects information related to the rotation angle of the tire wheel on which it is arranged by a rotation sensor, an acceleration sensor, or the like, and based on the detected information, calculates a phase difference of the tire wheel at a predetermined time interval. The phase difference is calculated and transmitted to the in-vehicle notification device 1.
  • ABS Antilock Brake System
  • the in-vehicle notification device 1 compares the phase difference transmitted from the transmission device 2 with the phase difference calculated by itself, and determines the tire wheel mounting position corresponding to the most correlated phase difference and the device ID of the transmission device 2.
  • the data is stored in the correspondence table 12 in association with each other.
  • the in-vehicle notification device 1 compares the phase difference for each transmission device 2 and updates the correspondence table 12 by storing the corresponding mounting position and device ID in the correspondence table 12.
  • the in-vehicle notification device 1 determines whether or not any of the tires 3 has been replaced based on the vehicle height acquired using the vehicle height sensor 16, and determines the determination result. Accordingly, the notification mode by the notification unit 15 for information relating to the air pressure of the tire 3 is switched.
  • a specific example of a notification mode by the notification unit 15 when the in-vehicle notification device 1 determines that none of the tires 3 has been replaced, and a notification unit when the in-vehicle notification device 1 determines that any of the tires 3 has been replaced The specific example of the alerting
  • FIG. 5A and FIG. 5B are explanatory diagrams illustrating a specific example of a notification mode by the notification unit 15.
  • 5A and 5B are enlarged views of the notification unit 15 provided in the instrument panel.
  • the notification unit 15 is provided with a display unit that is shaped like the vehicle C, and the air pressure is generated around the display unit. Such information is visually displayed.
  • FIG. 5A shows an example of a notification mode of the notification unit 15 when the in-vehicle notification device 1 determines that none of the tires 3 has been replaced.
  • the value of the air pressure of each tire 3 is displayed around the display unit, and the display position of each value corresponds to the mounting position of each tire 3. Specifically, “32” in FIG.
  • 5A represents the value of the air pressure of the tire 3 provided in front of the vehicle C
  • “28” represents the tire 3 provided in front of the vehicle C. Represents the value of air pressure
  • “24” in FIG. 5A indicates the air pressure value of the tire 3 provided at the right rear of the vehicle C
  • “26” indicates the tire 3 provided at the left rear of the vehicle C. Represents the air pressure.
  • FIG. 5B shows an example of a notification mode of the notification unit 15 when the in-vehicle notification device 1 determines that any of the tires 3 has been replaced.
  • the in-vehicle notification device 1 displays a warning message such as “The Pressure Low” when any one of the air pressures transmitted from each transmission device 2 has a low air pressure that requires inspection, replacement, etc. of the tire 3. Displayed to notify that any air pressure of the tire 3 has decreased. At this time, the vehicle-mounted notification device 1 notifies the notification unit 15 without identifying the tire 3 whose air pressure has decreased.
  • FIG. 5A when the air pressure of one or a plurality of tires 3 is lowered, the value of the air pressure of the target tire 3 is highlighted and a warning message as shown in FIG. You may make it alert
  • the in-vehicle notification device 1 switches the notification mode of the information relating to the air pressure, so that even if the correspondence table 12 is not updated after any of the tires 3 is replaced, the notification error is reported. Can be prevented.
  • FIG. 6 is a flowchart showing a processing procedure of the in-vehicle notification device 1 when determining whether or not the tire 3 has been replaced based on the height of the vehicle C.
  • reporting apparatus 1 determines whether it is in the sampling timing which should acquire the vehicle height of the vehicle C (step S11). For example, the CPU 11a determines that the vehicle height is at a sampling timing at which the vehicle height is to be acquired every time a predetermined time elapses while the vehicle C is stopped, for example. For example, the CPU 11a uses the vehicle speed sensor 17 to determine whether or not the vehicle C is stopped.
  • the predetermined time is, for example, 5 seconds.
  • the CPU 11a waits for processing until the sampling timing is reached. On the other hand, when it is determined that the vehicle height of the vehicle C is at the sampling timing to be acquired (S11: YES), the CPU 11a acquires the vehicle height of the vehicle C from the voltage or the like input from the vehicle height sensor 16 (step S12). ).
  • the CPU11a which acquired vehicle height determines whether the acquired vehicle height is more than predetermined height (step S13).
  • the predetermined height is set to be lower than the vehicle height when the vehicle C is lifted when replacing any of the tires 3 and higher than the vehicle height when the vehicle C jumps up during traveling or the like. Yes.
  • the CPU 11a resets the time count of the time measuring unit 11e (step S14). For example, the CPU 11a outputs a reset signal related to a time reset to the time measuring unit 11e. Thereafter, the CPU 11a returns the process to step S11.
  • the CPU 11a determines whether or not the time measuring unit 11e is measuring time (step S15). When it is determined that the time measuring unit 11e is not measuring time (S15: NO), the CPU 11a causes the time measuring unit 11e to start measuring (step S16), and then returns the process to step S11.
  • step S17 it is determined whether or not a predetermined time has elapsed since the time measuring unit 11e started measuring time.
  • the predetermined time is, for example, a time required to replace at least one tire 3, and is 5 minutes as an example.
  • the CPU 11a functions as a vehicle height determination unit by executing a control program.
  • step S17 If it is determined that the predetermined time has not elapsed (S17: NO), the CPU 11a returns the process to step S11. On the other hand, when it is determined that the predetermined time has elapsed (S17: YES), the CPU 11a resets the correspondence table 12 (step S18). Specifically, the CPU 11a deletes the contents of the correspondence table 12. The process in step S18 represents that the CPU 11a has determined that any of the tires 3 has been replaced. Thereafter, the CPU 11a finishes the process.
  • FIG. 7 is a flowchart showing a processing procedure of the in-vehicle notification device 1 when notifying information related to the air pressure of the tire 3.
  • reporting apparatus 1 determines whether it is in the transmission timing of a request signal (step S21). For example, the CPU 11a determines that it is at the transmission timing of the request signal every time a predetermined time elapses while the drive source of the vehicle C is started.
  • the predetermined time is, for example, 1 second.
  • step S21: NO If it is determined that the transmission timing is not reached (S21: NO), the CPU 11a waits until the transmission timing is reached. On the other hand, when it determines with it being in a transmission timing (S21: YES), CPU11a transmits a request signal to each transmitter 2 sequentially (step S22).
  • the transmission device 2 that has received the request signal detects the air pressure of the tire 3 attached to the tire wheel on which the request signal is arranged as described above, and transmits the detected air pressure and its own device ID to the in-vehicle notification device 1. .
  • the CPU 11a determines whether or not the air pressure and the device ID transmitted from the transmission device 2 are received according to the transmitted request signal (step S23). When it determines with not receiving air pressure and apparatus ID (S23: NO), CPU11a waits until it receives. In step S23, the reception unit 14 that receives the air pressure and the device ID corresponds to an air pressure information acquisition unit.
  • the CPU 11a determines whether any of the tires 3 of the vehicle C has been replaced (step S24). Specifically, the CPU 11a determines whether or not any of the tires 3 has been replaced depending on whether or not the contents are stored in the correspondence table 12.
  • the CPU 11a determines whether or not the received air pressure is equal to or lower than a predetermined threshold (step S25).
  • the predetermined threshold is a value that requires replacement, inspection, etc. of the tire 3 in order to prevent a problem from occurring due to a decrease in the air pressure of the tire 3 when the vehicle C is traveling.
  • the CPU 11a functions as an air pressure threshold value determination unit by executing a control program in step S25.
  • the CPU 11a When it is determined that the received air pressure is equal to or lower than the predetermined threshold (S25: YES), the CPU 11a notifies the notification unit 15 of a warning (step S26).
  • step S24 when it is determined in step S24 that none of the tires 3 has been replaced (S24: NO), the CPU 11a specifies the mounting position of the tire 3 identified by the received device ID (step S27). Specifically, the CPU 11a specifies the mounting position corresponding to the received device ID based on the correspondence table 12 stored in the storage unit 11b.
  • the CPU 11a determines whether or not the received air pressure is equal to or less than a predetermined threshold (step S28).
  • the predetermined threshold value is the same as the threshold value determined in step S25.
  • a warning that the value of the received air pressure and the air pressure of the tire 3 have decreased so that the identified tire 3 can be identified. Is notified to the notification unit 15 (step S29). Thereafter, the CPU 11a finishes the process.
  • the CPU 11a when it is determined that the received air pressure is higher than the predetermined threshold (S28: NO), the CPU 11a notifies the notification unit 15 of the received air pressure so that the identified tire 3 can be identified (step S30). .
  • processing procedure from step S24 to step S30 in FIG. 7 is a processing procedure performed by the in-vehicle notification device 1 based on the air pressure and the device ID transmitted from the one transmission device 2.
  • the in-vehicle notification device 1 performs the processing procedure every time it receives air pressure and device ID from the transmission device 2.
  • the in-vehicle notification device 1 can determine whether or not the tire 3 has been replaced based on the acquired vehicle height of the vehicle C, and any of the plurality of tires 3 provided in the vehicle C can be determined.
  • the notification mode can be changed depending on whether or not the message has been exchanged.
  • the vehicle-mounted notification device 1 reports information according to the mounting position of the tire 3 and the air pressure of the tire 3, so that any tire 3 can be replaced.
  • notification for each mounting position is not performed. Therefore, during the period until the correspondence table 12 is updated, the notification of the correspondence between the mounting position of the tire 3 and the transmission device 2 based on the correspondence table 12 is not performed, and an error in notification can be prevented.
  • the in-vehicle notification device 1 has a configuration capable of detecting a vehicle height mounted on a general vehicle such as a vehicle height sensor 16 used for control related to optical axis adjustment of a headlight, pressure control of an air suspension, and the like. It can be used, and an increase in cost during configuration can be suppressed.
  • the in-vehicle notification device 1 prevents a notification error by not reporting information corresponding to the air pressure of the tire 3 for each mounting position of the tire 3 when any of the plurality of tires 3 is replaced, for example. can do.
  • the user can know that the air pressure of at least one of the tires 3 has decreased. Therefore, convenience for the user can be improved.
  • reporting apparatus 1 determined that replacement
  • reporting part 15 demonstrated notifying the information according to the air pressure received from the transmitter 2 by the alerting
  • the transmission apparatus 2 demonstrated transmitting the air pressure of the tire 3 according to the request
  • the predetermined timing is, for example, every time when a predetermined time such as 1 second elapses from a predetermined time point such as engine start when the tire rotates, and can be set as appropriate.
  • the configurations of the transmission unit 13 and the LF transmission antenna 18 of the in-vehicle notification device 1 and the reception unit 24 and the LF reception antenna 26 of the transmission device 2 are not essential.
  • reporting apparatus 1 demonstrated the example which acquires the said air pressure by receiving the air pressure which the transmission apparatus 2 detected and transmitted, it is made to acquire the information regarding another air pressure. Also good.
  • the transmitting device 2 transmits the degree of air pressure such as “high”, “normal”, “low”, etc. according to the air pressure detected by itself, and the in-vehicle notification device 1 receives and notifies the air pressure level. It may be.
  • step S18 in FIG. 6 the CPU 11a has shown that the correspondence table 12 is reset. However, it may indicate that any of the tires 3 has been replaced by a process other than resetting the correspondence table 12. .
  • the CPU 11a performs a process of temporarily storing in the temporary storage unit 11c information indicating that any of the tires 3 has been replaced in step S18, and the temporary storage unit 11c in step S24 in FIG. It may be determined whether information is temporarily stored. That is, any process may be performed in step S18 as long as the notification mode of the notification unit 15 can be switched based on the vehicle height of the vehicle C being equal to or higher than a predetermined height.
  • the in-vehicle notification device 1 determines whether or not the air pressure transmitted from the transmission device 2 is equal to or less than a predetermined threshold value in steps S25 and S28 in FIG. Although the decrease is determined, other abnormalities in air pressure may be determined. For example, after determining that the air pressure is not less than or equal to a predetermined threshold value in steps S25 and S28, the in-vehicle notification device 1 may determine whether or not the air pressure is greater than or equal to a second threshold value that is greater than the threshold value. In this case, the in-vehicle notification device 1 determines whether or not there is a high air pressure that requires the inspection, replacement, etc. of the tire 3. If it is determined that the value is equal to or greater than the second threshold, the in-vehicle notification device 1 may display a warning message such as “Tire Pressure High” on the notification unit 15, for example.
  • a warning message such as “Tire Pressure High”

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
PCT/JP2015/084102 2014-12-05 2015-12-04 車載報知装置及び報知システム Ceased WO2016088865A1 (ja)

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CN201580062166.9A CN107107686B (zh) 2014-12-05 2015-12-04 车载通知装置及通知系统
US15/532,933 US9956833B2 (en) 2014-12-05 2015-12-04 In-vehicle reporting apparatus and reporting system

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JP6409648B2 (ja) * 2015-03-27 2018-10-24 株式会社オートネットワーク技術研究所 通信器装着位置判定システム及び判定装置
US10857844B2 (en) * 2016-01-15 2020-12-08 Infineon Technologies Ag Tire parameter monitoring system
JP2018062203A (ja) * 2016-10-11 2018-04-19 トヨタ自動車株式会社 タイヤ空気圧監視システム
CN111052159B (zh) * 2017-08-22 2024-02-27 株式会社普利司通 航空器用轮胎管理系统、航空器用轮胎管理装置以及航空器用轮胎管理程序
JP6449401B1 (ja) * 2017-09-27 2019-01-09 ヤマトオートワークス株式会社 点呼・点検支援装置、点呼・点検支援システム及び点呼・点検支援プログラム
JP6888731B1 (ja) * 2020-12-11 2021-06-16 住友ゴム工業株式会社 タイヤ空気圧管理システム、タイヤ空気圧管理方法

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JP6380061B2 (ja) 2018-08-29
CN107107686A (zh) 2017-08-29
US9956833B2 (en) 2018-05-01

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