WO2017188025A1 - Système de surveillance de pression de pneu et dispositif de surveillance - Google Patents

Système de surveillance de pression de pneu et dispositif de surveillance Download PDF

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Publication number
WO2017188025A1
WO2017188025A1 PCT/JP2017/015265 JP2017015265W WO2017188025A1 WO 2017188025 A1 WO2017188025 A1 WO 2017188025A1 JP 2017015265 W JP2017015265 W JP 2017015265W WO 2017188025 A1 WO2017188025 A1 WO 2017188025A1
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WIPO (PCT)
Prior art keywords
antenna
request signal
detection device
tire
identifier
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PCT/JP2017/015265
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English (en)
Japanese (ja)
Inventor
誠 佐分利
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2017188025A1 publication Critical patent/WO2017188025A1/fr

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    • 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
    • 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

Definitions

  • the present invention relates to a tire pressure monitoring system and a monitoring device.
  • This application claims priority based on Japanese Patent Application No. 2016-091202 filed on April 28, 2016, and incorporates all the description content described in the above Japanese application.
  • the tire pressure monitoring system includes a detection device provided for each tire and a monitoring device disposed on the vehicle body.
  • the monitoring device individually sends request signals for requesting the transmission of air pressure signals from the four LF transmitting antennas arranged in the vicinity of each tire position to each tire position using radio waves in the LF (Low Frequency) band. Send. Since the communication range of each LF transmission antenna is limited to the range of the corresponding tire position, the monitoring device can individually perform bidirectional communication with the detection device at each tire position.
  • the detection device that has received the request signal detects the air pressure of the tire, and wirelessly transmits the air pressure signal including the air pressure obtained by the detection using radio waves in the UHF band.
  • the monitoring device receives the air pressure signal transmitted from each detection device, and monitors the air pressure of each tire based on the received air pressure signal. Specifically, when the tire air pressure falls below a threshold value, the monitoring device displays an abnormality in the tire air pressure on the indicator and issues a warning.
  • the tire pressure monitoring system is provided in tires before and after a vehicle, and performs wireless communication with the detection devices using a plurality of detection devices that detect the tire air pressure and the identifiers of the detection devices.
  • a monitoring device that monitors the air pressure of each tire, wherein the monitoring device is closer to one side of the vehicle, and a first antenna provided between the front and rear tires;
  • a second antenna provided at the front or rear of the vehicle and a request signal for requesting a response signal including an identifier of the detection device from the first antenna and the second antenna.
  • a request signal transmission unit for receiving the request signal transmitted from the first antenna or the second antenna.
  • a response signal receiving unit that receives the response signal, an identifier included in the response signal transmitted from the detection device provided in the front and rear tires according to the request signal transmitted from the first antenna, Based on the identifier included in the response signal transmitted from the detection device provided in the front or rear tire according to the request signal transmitted from the second antenna, the tire provided in the front and rear tires And a specifying unit that specifies an identifier of the detection device.
  • the monitoring device is provided in tires before and after the vehicle, and by performing wireless communication using a plurality of detection devices that detect the air pressure of the tires and an identifier of each detection device, A monitoring device for monitoring air pressure, the first antenna being provided on one side of the vehicle and provided between the front and rear tires, and the second antenna provided on the front or rear of the vehicle
  • a request signal transmission unit that causes the detection apparatus to transmit a request signal that requests a response signal including an identifier of the detection apparatus from the first antenna and the second antenna, and a transmission from the detection apparatus that has received the request signal
  • a specifying unit that specifies an identifier of the detection device provided on the tire.
  • the present application can be realized not only as a tire pressure monitoring system and a monitoring device including such a characteristic processing unit, but also as a tire pressure monitoring method using such characteristic processing as a step. It can be realized as a program for causing a computer to execute the steps. Moreover, it is realizable as a semiconductor integrated circuit which implement
  • an LF transmission antenna for the vehicle communication system is connected to a tire. It is conceivable to also serve as an LF transmission antenna for air pressure monitoring (for example, Patent Document 1). However, since the ideal arrangement of LF transmission antennas in each communication system is different, it is difficult to satisfy the specifications of each vehicle communication system.
  • the LF transmitting antenna when the LF transmitting antenna is installed near the tire position on the front, rear, left and right sides of the vehicle, the specifications of the tire air pressure monitoring system are satisfied, but the driver seat side and the passenger seat located just in the center in the front-rear direction of the vehicle The radio field strength near the request switch on the side may be reduced, and the function of the Smart Entry (registered trademark) system may be hindered.
  • the LF transmitting antenna is disposed on the right and left side portions of the vehicle substantially in the front-rear direction and on the rear portion near the back door (for example, Patent Document 2), the specifications of the Smart Entry (registered trademark) system are satisfied.
  • there is a problem of crosstalk in which signals transmitted from the right side LF transmitting antenna are received by detection devices provided on the right front and right rear tires.
  • the object of the present disclosure is to solve the problem of crosstalk and to be provided in each of the front and rear tires even when the LF transmitting antenna is provided in the front-rear direction substantially central part near the right side or the left side of the vehicle.
  • Another object of the present invention is to provide a tire pressure monitoring system and a monitoring device capable of monitoring the tire pressure detected by the detection device.
  • a tire air pressure monitoring system is provided in tires before and after a vehicle, and wirelessly uses the plurality of detection devices that detect the air pressure of the tires and an identifier of each detection device.
  • An air pressure monitoring system comprising a monitoring device that monitors the air pressure of each tire by performing communication, wherein the monitoring device is closer to one side surface of the vehicle and is provided between the front and rear tires.
  • a request signal transmission unit that transmits the request signals separately, and the detection devices provided on the front and rear tires receive the request signal transmitted from the first antenna or the second antenna.
  • a response signal receiving unit that receives the response signal, an identifier included in the response signal transmitted from the detection device provided in the front and rear tires according to the request signal transmitted from the first antenna, Based on the identifier included in the response signal transmitted from the detection device provided on the front or rear tire according to the request signal transmitted from the second antenna, provided on the front and rear tires
  • a specifying unit that specifies an identifier of the detection device.
  • the request signal transmitted from the first antenna is received by the detection devices provided on the tires before and after the vehicle.
  • the request signal transmitted from the second antenna is received by a detection device provided on the front or rear tire of the vehicle.
  • each detection device receives the request signal, it transmits a response signal including the identifier of the device itself, and the monitoring device is transmitted from the detection device in response to the request signal transmitted from the first antenna and the second antenna.
  • a response signal is received. Therefore, when a request signal is transmitted from the first antenna, the monitoring device includes a response signal including the identifier of the detection device provided on the front tire and the identifier of the detection device provided on the rear tire. A response signal is received.
  • the monitoring device When the request signal is transmitted from the second antenna, the monitoring device receives a response signal including the identifier of the detection device provided in either the front tire or the rear tire. For example, when the monitoring device receives a response signal including the identifier of the detection device provided on the front tire, the monitoring device does not receive the response signal including the identifier of the detection device provided on the rear tire. Similarly, when the monitoring device receives a response signal including the identifier of the detection device provided on the rear tire, the monitoring device does not receive the response signal including the identifier of the detection device provided on the front tire. Therefore, the monitoring device can specify the identifiers of the detection devices provided in the front and rear tires based on the identifiers included in the response signals.
  • the 1st antenna and 2nd antenna which comprise this aspect (1) are not necessarily combined with the antenna which comprises a smart entry (trademark) system or a smart start (trademark) system.
  • the first antenna includes the right front and right rear tires in the transmission range of the request signal that can be received by the detection device, and the left front and left rear tires are not included.
  • the right antenna provided near the right side of the vehicle and the transmission range of the request signal that can be received by the detection device include the left front and left rear tires, and does not include the right front and right rear tires.
  • the left antenna provided near the left side surface of the vehicle, and the second antenna includes the right rear and left rear tires in the transmission range of the request signal that can be received by the detection device.
  • a configuration provided at the rear of the vehicle is preferable so that the right front and left front tires are not included.
  • the identifiers of the detection devices provided on the four tires on the front, rear, left, and right sides of the vehicle are identified using the three LF transmission antennas provided on the right side, the left side, and the rear side of the vehicle. can do.
  • the identification unit includes the identifier included in the response signal to the request signal transmitted from the right antenna and not included in the response signal to the request signal transmitted from the second antenna.
  • the structure specified as the identifier of the said detection apparatus provided in the said tire of is preferable.
  • the identifier of the detection device provided on the right front tire can be specified.
  • the identification unit includes the identifier included in both the response signal to the request signal transmitted from the right antenna and the second antenna, and the identifier of the detection device provided in the right rear tire.
  • the identifier of the detection device provided in the right rear tire can be specified.
  • the specifying unit includes the identifier included in the response signal to the request signal transmitted from the left antenna and not included in the response signal to the request signal transmitted from the second antenna.
  • the structure specified as the identifier of the said detection apparatus provided in the said tire of is preferable.
  • the identification unit includes the identifier included in both the response signal to the request signal transmitted from the left antenna and the second antenna, and the identifier of the detection device provided in the left rear tire.
  • the monitoring device is provided in tires before and after the vehicle, and by performing wireless communication using a plurality of detection devices that detect the air pressure of the tires and the identifiers of the detection devices, A monitoring device that monitors the air pressure of each tire, the first antenna being provided on one side of the vehicle and between the front and rear tires, and a first antenna provided on the front or rear of the vehicle.
  • a request signal transmitter for requesting a response signal including an identifier of the detection device to the detection device separately from the first antenna and the second antenna, and the detection having received the request signal
  • the identifier included in the response signal transmitted from the detection device provided on the front or rear tire according to the request signal transmitted from the second antenna A specifying unit that specifies identifiers of the detection devices provided on the front and rear tires.
  • the monitoring device can specify the identifiers of the detection devices provided in the respective front and rear tires based on the identifiers included in the response signals.
  • FIG. 1 is a conceptual diagram showing a configuration example of a tire pressure monitoring system according to an embodiment of the present invention.
  • the tire pressure monitoring system according to the present embodiment includes a monitoring device 1 provided at an appropriate location of the vehicle body, a plurality of detection devices 2 provided on each of the wheels of a plurality of tires 3 provided on the vehicle C, and a notification device. 4.
  • the monitoring device 1 wirelessly communicates with each of the detection devices 2 using sensor identifiers unique to the plurality of detection devices 2, thereby acquiring the pressure information of each tire 3.
  • the notification device 4 performs notification according to the acquired air pressure information.
  • a plurality of LF transmission antennas 5 are connected to the monitoring device 1.
  • the plurality of LF transmitting antennas 5 are provided on the right side surface of the vehicle C, the right side antenna 51 (first antenna) provided in the front and rear direction substantially central portion, and on the left side surface of the vehicle C and the front and rear direction substantially central portion. It includes a left antenna 52 (first antenna) and a rear antenna 53 (second antenna) provided at the rear portion of the vehicle C and at a substantially central portion in the left-right direction.
  • the monitoring device 1 transmits a request signal for requesting a response signal including at least a sensor identifier from each LF transmission antenna 5 to the detection device 2 by radio waves in the LF band.
  • the monitoring device 1 transmits a request signal for requesting a response signal including the air pressure of the tire 3 and a sensor identifier from each LF transmission antenna 5 to the detection device 2 by radio waves in the LF band.
  • the detection device 2 receives the request signal, the detection device 2 transmits a response signal including at least the sensor identifier of the device itself to the monitoring device 1 using radio waves in the UHF (Ultra High Frequency) band.
  • UHF Ultra High Frequency
  • the detection device 2 detects the air pressure of the tire 3 and transmits a response signal including the air pressure obtained by the detection and the sensor identifier of the own device to the monitoring device 1.
  • the monitoring device 1 includes an RF reception antenna 13a, receives a response signal transmitted from each detection device 2 by the RF reception antenna 13a, and uses a sensor identifier of the detection device 2 provided in each tire 3 from the response signal, Get information such as air pressure.
  • 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.
  • the monitoring device 1 is connected to the notification device 4 via a communication line, and the monitoring device 1 transmits the acquired air pressure information to the notification device 4.
  • the notification device 4 receives the information on the air pressure transmitted from the monitoring device 1 and notifies the air pressure of each tire 3. Further, the notification device 4 issues a warning when the air pressure of the tire 3 is less than a predetermined threshold value.
  • FIG. 2 is a conceptual diagram showing the communication range of each LF transmission antenna 5.
  • reference numeral 51a denotes a transmission range of a request signal transmitted from the right antenna 51, and indicates a range in which the detection device 2 can receive the request signal.
  • the transmission range 51 a includes the detection device 2 provided in the right front and right rear tires 3, and does not include the detection device 2 provided in the left front and left rear tires 3.
  • reference numeral 52 a denotes a transmission range of a request signal transmitted from the left antenna 52, and indicates a range in which the detection device 2 can receive the request signal.
  • FIG. 51a denotes a transmission range of a request signal transmitted from the right antenna 51, and indicates a range in which the detection device 2 can receive the request signal.
  • the transmission range 52 a includes the detection device 2 provided in the left front and left rear tires 3, and does not include the detection device 2 provided in the right front and right rear tires 3.
  • reference numeral 53 a denotes a transmission range of a request signal transmitted from the rear antenna 53 and indicates a range in which the detection device 2 can receive the request signal.
  • the transmission range 53 a includes the detection device 2 provided in the right rear and left rear tires 3, and does not include the detection device 2 provided in the right front and left front tires 3.
  • FIG. 3 is a block diagram showing a configuration example of the monitoring device 1 according to the embodiment of the present invention.
  • the monitoring device 1 includes a monitoring control unit 11 that controls the operation of each component of the monitoring device 1.
  • a storage unit 12, a response signal receiving unit 13, a request signal transmitting unit 14 and an in-vehicle communication unit 15 are connected to the monitoring control unit 11.
  • the monitoring control unit 11 is a microcomputer having, for example, one or a plurality of CPUs (Central Processing Unit), a multi-core CPU, a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output interface, and the like.
  • the CPU of the monitoring control unit 11 is connected to the storage unit 12, the response signal receiving unit 13, the request signal transmitting unit 14, and the in-vehicle communication unit 15 via an input / output interface.
  • the monitoring control unit 11 executes the control program stored in the storage unit 12 to control the operation of each component unit, and executes the tire pressure monitoring process according to the present embodiment.
  • the storage unit 12 is a nonvolatile memory such as an EEPROM (ElectricallyrErasable Programmable ROM) or a flash memory.
  • the storage unit 12 stores a control program for executing the tire pressure monitoring process by the monitoring control unit 11 controlling the operation of each component of the monitoring device 1.
  • the storage unit 12 stores an identifier table.
  • the identifier table stores a plurality of tire positions in association with sensor identifiers of the detection device 2 provided on the tire 3 at the tire position.
  • a tire position is a tire house and its peripheral position.
  • the response signal receiving unit 13 is connected to an RF receiving antenna 13a.
  • the response signal receiving unit 13 receives a signal transmitted from the detection device 2 using an RF band radio wave by the RF receiving antenna 13a.
  • the response signal receiving unit 13 is a circuit that demodulates the received signal and outputs the demodulated signal to the monitoring control unit 11.
  • the carrier wave uses a UHF band of 300 MHz to 3 GHz, but is not limited to this frequency band.
  • the request signal transmission unit 14 is a circuit that modulates the signal output from the monitoring control unit 11 into an LF band signal and transmits the modulated signal to the detection device 2 from each of the plurality of LF transmission antennas 5.
  • the carrier wave uses the LF band of 30 kHz to 300 kHz, but is not limited to this frequency band.
  • the in-vehicle communication unit 15 is a communication circuit that performs communication in accordance with a communication protocol such as CAN (Controller Area Network) or LIN (Local Interconnect Network), and is connected to the notification device 4.
  • the in-vehicle communication unit 15 transmits information related to the air pressure of the tire 3 to the notification device 4 according to the control of the monitoring control unit 11.
  • the notification device 4 is, for example, a multi-information display, a head-up display, or the like that notifies information related to the air pressure of the tire 3 transmitted from the in-vehicle communication unit 15 by an image.
  • the notification device 4 displays air pressure information of each tire 3 provided in the vehicle C.
  • the notification device 4 may be an audio device or the like provided with a display unit or a speaker for notification by an image or sound.
  • the display unit is a liquid crystal display, an organic EL display, or the like.
  • FIG. 4 is a block diagram illustrating a configuration example of the detection device 2.
  • the detection device 2 includes a sensor control unit 21 that controls the operation of each component of the detection device 2.
  • a sensor storage unit 22, a response signal transmission unit 23, a request signal reception unit 24, an air pressure detection unit 25, and a temperature detection unit 26 are connected to the sensor control unit 21.
  • the sensor control unit 21 is a microcomputer having, for example, one or a plurality of CPUs, a multi-core CPU, a ROM, a RAM, an input / output interface, and the like.
  • the CPU of the sensor control unit 21 is connected to the sensor storage unit 22, the response signal transmission unit 23, the request signal reception unit 24, the air pressure detection unit 25, and the temperature detection unit 26 through an input / output interface.
  • the sensor control unit 21 reads a control program stored in the sensor storage unit 22 and controls each unit.
  • the detection device 2 includes a battery (not shown) and operates with electric power from the battery.
  • the sensor storage unit 22 is a nonvolatile memory.
  • the sensor storage unit 22 stores a control program for the CPU of the sensor control unit 21 to perform processing related to detection and transmission of the air pressure of the tire 3. Further, a unique sensor identifier for identifying the own device and the other detection device 2 is stored.
  • the air pressure detection unit 25 includes a diaphragm, for example, and detects the air pressure of the tire 3 based on the deformation amount of the diaphragm that changes depending on the magnitude of pressure.
  • the air pressure detection unit 25 outputs a signal indicating the detected air pressure of the tire 3 to the sensor control unit 21.
  • the temperature detection unit 26 includes, for example, an element whose electric resistance changes with temperature, and detects the temperature of the tire 3 based on the voltage between the elements that changes with temperature change.
  • the temperature detection unit 26 outputs a signal indicating the detected temperature of the tire 3 to the sensor control unit 21.
  • the response signal transmission unit 23 is connected to an RF transmission antenna 23a.
  • the response signal transmission unit 23 modulates the response signal generated by the sensor control unit 21 into a UHF band signal, and transmits the modulated response signal using the RF transmission antenna 23a.
  • the LF receiving antenna 24a is connected to the request signal receiving unit 24.
  • the request signal receiving unit 24 receives the request signal transmitted from the monitoring device 1 using radio waves in the LF band by the LF receiving antenna 24 a and outputs the received signal to the sensor control unit 21.
  • the sensor control unit 21 of the detection device 2 configured as described above generates a response signal corresponding to the content of the request signal by executing the control program, and transmits the response signal to the monitoring device 1 by the response signal transmission unit 23. .
  • the sensor control unit 21 transmits a response signal including the sensor identifier stored in the sensor storage unit 22 by the response signal transmitting unit 23.
  • the air pressure and temperature of the tire 3 are acquired from the air pressure detection unit 25 and the temperature detection unit 26, and a response signal including the air pressure, temperature and a sensor identifier unique to the detection device 2 is sent to the response signal transmission unit 23. To send.
  • the monitoring device 1 specifies the sensor identifier of the detection device 2 provided in each tire 3 and acquires air pressure information.
  • the monitoring device 1 may request only the sensor identifier information from each detection device 2 and execute only the process of specifying the sensor identifier of the detection device 2 provided in each tire 3.
  • FIG. 5 is a flowchart showing a processing procedure of the monitoring apparatus 1 related to air pressure monitoring
  • FIG. 6 is a table showing sensor identifiers included in the received response signal.
  • the monitoring controller 11 transmits a request signal for requesting air pressure information from the right antenna 51 (step S11).
  • the monitoring control unit 11 receives the response signal transmitted from the detection device 2 that has received the request signal (step S12), and stores the sensor identifier and air pressure included in the received response signal in association with the right antenna 51. (Step S13).
  • a response signal is transmitted from the detection device 2 provided in the right front and right rear tires 3, and therefore included in the two response signals, for example, as shown in the upper column of FIG.
  • the monitoring controller 11 transmits a request signal for requesting air pressure information from the left antenna 52 (step S14).
  • the monitoring controller 11 receives the response signal transmitted from the detection device 2 that has received the request signal (step S15), and stores the sensor identifier and air pressure included in the received response signal in association with the left antenna 52. (Step S16).
  • a request signal is transmitted from the left antenna 52
  • a response signal is transmitted from the detection device 2 provided in the front left and rear left tires 3, and therefore included in the two response signals, for example, as shown in the column of FIG. Stored sensor identifiers “0003” and “0004”.
  • the monitoring control unit 11 transmits a request signal for requesting air pressure information from the rear antenna 53 (step S17).
  • the monitoring controller 11 receives the response signal transmitted from the detection device 2 that has received the request signal (step S18), and stores the sensor identifier and air pressure included in the received response signal in association with the left antenna 52. (Step S19).
  • the request signal is transmitted from the rear antenna 53, since the response signal is transmitted from the detection device 2 provided in the right rear and left rear tires 3, for example, as shown in the lower column of FIG.
  • the included sensor identifiers “0002” and “0004” are stored.
  • the monitoring control part 11 performs the process which specifies the sensor identifier of the detection apparatus 2 provided in the four tires 3 front and rear, right and left based on each sensor identifier memorize
  • FIG. 7 is a chart showing a sensor identifier specifying method of the detection device 2 provided in each tire 3.
  • the monitoring control unit 11 selects one of the four stored sensor identifiers “0001”, “0002”, “0003”, and “0004” that has an unspecified correspondence with the front, rear, left, and right tire positions. select.
  • the sensor identifier selected here is referred to as one sensor identifier.
  • “present” indicates that one sensor identifier is included in the response signal to the request signal transmitted from each LF transmitting antenna 5, and “none” indicates one sensor in the response signal. Indicates that no identifier is included.
  • one sensor identifier is included in the response signal to the request signal transmitted from the right antenna 51, and is not included in the response signal to the request signal transmitted from the left antenna 52 and the rear antenna 53, respectively. Is determined, the one sensor identifier is stored as the sensor identifier of the right front tire position. Similarly, the monitoring controller 11 includes one sensor identifier included in the response signal for the request signal transmitted from the right antenna 51 and the rear antenna 53, and included in the response signal for the request signal transmitted from the left antenna 52. If it is determined that it is not, the one sensor identifier is stored as the sensor identifier of the right rear tire position.
  • one sensor identifier is not included in the response signal for the request signal transmitted from the right antenna 51 and the rear antenna 53, but is included in the response signal for the request signal transmitted from the left antenna 52. If it is determined that the vehicle is tired, one sensor identifier is stored as a sensor identifier of the front left tire position. In the monitoring control unit 11, one sensor identifier is not included in the response signal to the request signal transmitted from the right antenna 51, but is included in the response signal to the request signal transmitted from the left antenna 52 and the rear antenna 53, respectively. If it is determined that the vehicle is tired, one sensor identifier is stored as the sensor identifier of the tire position at the left rear.
  • FIG. 8 is a table showing the correspondence between the detection device 2 and sensor identifier of each tire 3.
  • sensor identifiers corresponding to front, rear, left and right tire positions are associated with each other as shown in the table of FIG.
  • the sensor identifier “0001” when the sensor identifier “0001” is selected as one sensor identifier, the sensor identifier “0001” is included in the response signal to the request signal transmitted from the right antenna 51, and is transmitted from the left antenna 52 and the rear antenna 53. Since it is not included in the response signal to the transmitted request signal, the sensor identifier is specified as the sensor identifier of the tire position at the front right as shown in the column “detection device for the front right tire” in FIG.
  • the sensor identifier “0002” when the sensor identifier “0002” is selected as one sensor identifier, the sensor identifier “0002” is included in both of the response signals to the request signals transmitted from the right antenna 51 and the rear antenna 53, and the left side Since the response signal to the request signal transmitted from the antenna 52 is not included, the sensor identifier is specified as the sensor identifier of the right rear tire position as shown in the column “Right Rear Tire Detection Device” in FIG. . Similarly, when the sensor identifier “0003” is selected as one sensor identifier, the sensor identifier “0003” is included in the response signal to the request signal transmitted from the left antenna 52, and the right antenna 51 and the rear antenna 53 are included.
  • the sensor identifier is specified as the sensor identifier of the front left tire position as shown in the column “Left Front Tire Detection Device” in FIG.
  • the sensor identifier “0004” is selected as one sensor identifier, the sensor identifier “0004” is not included in the response signal to the request signal transmitted from the right antenna 51, and the left antenna 52 And the response signal to the request signal transmitted from the rear antenna 53, the sensor identifier is specified as the sensor identifier of the left rear tire position as shown in the column “left rear tire detection device” in FIG. Is done.
  • the LF transmission antenna 5 is provided on the right side surface and the left side surface of the vehicle C in the front-rear direction substantially central portion.
  • the sensor identifiers and air pressures of the detection devices 2 provided on the front, rear, left and right tires 3 can be specified, and the air pressure of each tire 3 can be monitored.
  • the detection devices 2 provided on the four tires 3 on the front, rear, left, and right sides of the vehicle C using the three LF transmission antennas 5 provided on the right side portion, the left side portion, and the rear portion of the vehicle C.
  • Sensor identifiers can be specified.
  • the example in which the four tire positions and the sensor identifiers are associated with each other using the right antenna 51, the left antenna 52, and the rear antenna 53 has been described.
  • the right antenna 51, the left antenna 52, and the vehicle C You may comprise so that four tire positions and a sensor identifier may be matched using the front antenna provided in the front part.
  • the right antenna 51, the left antenna 52, and the rear antenna 53 are described as tire pressure monitoring antennas. However, as antennas constituting a smart entry (registered trademark) system or a smart start (registered trademark) system. You may also use it.

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  • Measuring Fluid Pressure (AREA)

Abstract

La présente invention concerne un système de surveillance de pression d'air qui comprend : un dispositif de détection qui est disposé sur les pneus d'un véhicule, détecte la pression d'air dans chaque pneu conformément à un signal de demande, et transmet un signal de réponse comprenant la pression d'air et un identifiant du dispositif de détection ; une première antenne qui est disposée à proximité de la face latérale droite ou de la face latérale gauche d'une partie approximativement centrale dans la direction longitudinale ; une deuxième antenne qui est disposée à proximité de l'arrière du véhicule ; et un dispositif de surveillance qui communique sans fil avec le dispositif de détection. Le dispositif de surveillance identifie la pression d'air dans les pneus droit/gauche avant/arrière sur la base de l'identifiant inclus dans le signal de demande transmis par la première antenne et de l'identifiant inclus dans le signal de demande transmis par la deuxième antenne.
PCT/JP2017/015265 2016-04-28 2017-04-14 Système de surveillance de pression de pneu et dispositif de surveillance WO2017188025A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-091202 2016-04-28
JP2016091202A JP2017197101A (ja) 2016-04-28 2016-04-28 タイヤ空気圧監視システム及び監視装置

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WO2017188025A1 true WO2017188025A1 (fr) 2017-11-02

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