WO2017188025A1 - Tire-pressure monitoring system and monitoring device - Google Patents

Tire-pressure monitoring system and monitoring device 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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WO
WIPO (PCT)
Prior art keywords
antenna
request signal
detection device
tire
identifier
Prior art date
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PCT/JP2017/015265
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French (fr)
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
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.)
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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/en

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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.

Abstract

This air-pressure monitoring system comprises: a detection device that is provided to the tires of a vehicle, detects the air pressure in each tire in accordance with a request signal, and transmits a response signal including the air pressure and an identifier of the detection device; a first antenna that is provided close to the right side face or the left side face of an approximately central part in the longitudinal direction; a second antenna that is provided close to the rear of the vehicle; and a monitoring device that wirelessly communicates with the detection device. The monitoring device identifies the air pressure in the front/rear right/left tires on the basis of the identifier included in the request signal transmitted by the first antenna and the identifier included in the request signal transmitted by the second antenna.

Description

タイヤ空気圧監視システム及び監視装置Tire pressure monitoring system and monitoring device
　本発明は、タイヤ空気圧監視システム及び監視装置に関する。
　本出願は、２０１６年４月２８日出願の日本出願第２０１６－０９１２０２号に基づく優先権を主張し、前記日本出願に記載された全ての記載内容を援用するものである。 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.
　車両に設けられたタイヤの空気圧を検出し、検出した空気圧が異常であった場合、使用者に警告等を発するタイヤ空気圧監視システム（TPMS：Tire Pressure Monitoring System）がある。タイヤ空気圧監視システムは、各タイヤに設けられた検出装置と、車体に配された監視装置とを備える。監視装置は、各タイヤ位置近傍にそれぞれ配された４本のＬＦ送信アンテナから、空気圧信号の送信を要求する要求信号を、ＬＦ（Low Frequency）帯の電波を用いて、各タイヤ位置へ個別に送信する。各ＬＦ送信アンテナの通信範囲は、対応するタイヤ位置の範囲に限定されているため、監視装置は、各タイヤ位置にある検出装置と個別に双方向通信を行うことができる。要求信号を受信した検出装置は、タイヤの空気圧を検出し、検出して得た空気圧を含む空気圧信号をＵＨＦ帯の電波を用いて無線送信する。監視装置は、各検出装置から送信される空気圧信号を受信し、受信した空気圧信号に基づいて各タイヤの空気圧を監視する。具体的には監視装置は、タイヤの空気圧が閾値未満になった場合、タイヤの空気圧異常をインジケータに表示して警告を発する。 There is a tire pressure monitoring system (TPMS: Tire Pressure Monitoring System) that detects the pressure of the tires installed in the vehicle and issues a warning to the user if the detected air pressure is abnormal. 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.
特開２００４－２６８６１２号公報JP 2004-268612 A 特開２００４－１６１２４５号公報JP 2004-161245 A
　本態様に係るタイヤ空気圧監視システムは、車両の前後のタイヤに設けられており、該タイヤの空気圧を検出する複数の検出装置と、各検出装置の識別子を用いて該検出装置と無線通信を行うことにより、各タイヤの空気圧を監視する監視装置とを備える空気圧監視システムであって、前記監視装置は、前記車両の一側面寄りであり、前記前後のタイヤの間に設けられた第１アンテナと、前記車両の前寄り又は後寄りに設けられた第２アンテナと、前記検出装置に、該検出装置の識別子を含む応答信号を要求する要求信号を前記第１アンテナ及び第２アンテナから各別に送信させる要求信号送信部とを備え、前記前後のタイヤに設けられた前記検出装置は、前記第１アンテナ又は前記第２アンテナから送信された前記要求信号を受信する要求信号受信部と、該要求信号受信部にて前記要求信号を受信した場合、自装置の識別子を含む応答信号を送信する応答信号送信部とを備え、前記監視装置は、前記検出装置から送信された応答信号を受信する応答信号受信部と、前記第１アンテナから送信された前記要求信号に応じて前記前後のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子と、前記第２アンテナから送信された前記要求信号に応じて前側又は後側のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子とに基づいて、前記前後のタイヤに設けられた前記検出装置の識別子を特定する特定部とを備える。 The tire pressure monitoring system according to the present aspect 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 signal receiving unit; and a response signal transmitting unit that transmits a response signal including an identifier of the device itself when the request signal is received by the request signal receiving unit, and the monitoring device is transmitted from the detection device. 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.
　本態様に係る監視装置は、車両の前後のタイヤに設けられており、該タイヤの空気圧を検出する複数の検出装置と、各検出装置の識別子を用いて無線通信を行うことにより、各タイヤの空気圧を監視する監視装置であって、前記車両の一側面寄りであり、前記前後のタイヤの間に設けられた第１アンテナと、前記車両の前寄り又は後寄りに設けられた第２アンテナと、前記検出装置に、該検出装置の識別子を含む応答信号を要求する要求信号を前記第１アンテナ及び第２アンテナから各別に送信させる要求信号送信部と前記要求信号を受信した前記検出装置から送信された前記応答信号を受信する応答信号受信部と前記第１アンテナから送信された前記要求信号に応じて前記前後のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子と、前記第２アンテナから送信された前記要求信号に応じて前側又は後側のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子とに基づいて、前記前後のタイヤに設けられた前記検出装置の識別子を特定する特定部とを備える。 The monitoring device according to this aspect 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 response signal transmitted from the detection device provided in the front and rear tires in response to the request signal transmitted from the first antenna and a response signal receiving unit that receives the response signal Based on the identifier included and 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, A specifying unit that specifies an identifier of the detection device provided on the tire.
　なお、本願は、このような特徴的な処理部を備えるタイヤ空気圧監視システム及び監視装置として実現することができるだけでなく、かかる特徴的な処理をステップとするタイヤ空気圧監視方法として実現したり、かかるステップをコンピュータに実行させるためのプログラムとして実現したりすることができる。また、タイヤ空気圧監視システム又はｋ監視装置の一部又は全部を実現する半導体集積回路として実現したり、タイヤ空気圧監視システム又は監視装置を含むその他のシステムとして実現したりすることができる。 Note that 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 | achieves a part or all of a tire pressure monitoring system or k monitoring apparatus, and can be implement | achieved as another system containing a tire pressure monitoring system or a monitoring apparatus.
本発明の実施形態に係るタイヤ空気圧監視システムの一構成例を示す概念図である。It is a conceptual diagram which shows the example of 1 structure of the tire pressure monitoring system which concerns on embodiment of this invention. 各ＬＦ送信アンテナの通信範囲を示す概念図である。It is a conceptual diagram which shows the communication range of each LF transmission antenna. 本発明の実施形態に係る監視装置の一構成例を示すブロック図である。It is a block diagram which shows the example of 1 structure of the monitoring apparatus which concerns on embodiment of this invention. 検出装置の一構成例を示すブロック図である。It is a block diagram which shows the example of 1 structure of a detection apparatus. 空気圧監視に係る監視装置の処理手順を示すフローチャートである。It is a flowchart which shows the process sequence of the monitoring apparatus which concerns on air pressure monitoring. 受信した応答信号に含まれる識別子を示すテーブルである。It is a table which shows the identifier contained in the received response signal. 各タイヤに設けられた検出装置のセンサ識別子特定方法を示す図表である。It is a graph which shows the sensor identifier specific method of the detection apparatus provided in each tire. 各タイヤの検出装置及びセンサ識別子の対応関係を示すテーブルである。It is a table which shows the correspondence of the detection apparatus and sensor identifier of each tire.
［本開示が解決しようとする課題］
　車両にはすでに多くの車載機器が搭載されており、監視装置及び検出装置の双方向通信にて空気圧の監視を行うタイヤ空気圧監視システムにおいては、ＬＦ送信アンテナの本数及び設置場所が問題となる。 [Problems to be solved by the present disclosure]
Many in-vehicle devices are already mounted on the vehicle, and in the tire pressure monitoring system that monitors the air pressure by bidirectional communication between the monitoring device and the detection device, the number of LF transmitting antennas and the installation location become a problem.
　一方、メカニカルキーを用いずに車両ドアの施錠及び解錠を行うスマートエントリー（登録商標）システム等の車両用通信システムが搭載されている場合、当該車両用通信システム用のＬＦ送信アンテナを、タイヤ空気圧監視用のＬＦ送信アンテナとして兼用することが考えられる（例えば、特許文献１）。しかしながら、各通信システムにおける理想的なＬＦ送信アンテナの配置が異なるため、各車両用通信システムの仕様を満足することは困難である。 On the other hand, when a vehicle communication system such as a Smart Entry (registered trademark) system that locks and unlocks a vehicle door without using a mechanical key is mounted, 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.
　具体的には、車両の前後左右のタイヤ位置近傍にＬＦ送信アンテナを設置した場合、タイヤ空気圧監視システムの仕様は満足されるが、ちょうど車両の前後方向中央部に位置する運転席側及び助手席側のリクエストスイッチ付近の電波強度小さくなり、スマートエントリー（登録商標）システムの機能に支障が生じる可能性がある。
　一方、ＬＦ送信アンテナを、車両の前後方向略中部の右側面部及び左側面部、並びにバックドア付近の後部に配置した場合（例えば、特許文献２）、スマートエントリー（登録商標）システムの仕様は満足されるが、右側面部のＬＦ送信アンテナから送信された信号を、右前及び右後のタイヤに設けられた検出装置が受信するクロストークの問題が生ずる。 Specifically, 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.
On the other hand, when 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. However, 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.
　本開示の目的は、ＬＦ送信アンテナが車両の右側面寄り又は左側面寄りの前後方向略中央部に設けられた場合であっても、クロストークの問題を解消し、前後の各タイヤに設けられた検出装置で検出されたタイヤの空気圧を監視することができるタイヤ空気圧監視システム及び監視装置を提供することにある。 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.
［本開示の効果］
　本開示によれば、ＬＦ送信アンテナが車両の右側面寄り又は左側面寄りの前後方向略中央部に設けられた場合であっても、クロストークの問題を解消し、前後の各タイヤに設けられた検出装置で検出されたタイヤの空気圧を監視することができるタイヤ空気圧監視システム及び監視装置を提供することが可能になる。 [Effects of the present disclosure]
According to the present disclosure, even when the LF transmission antenna is provided in the front-rear direction substantially central portion near the right side or the left side of the vehicle, the problem of crosstalk is solved, and the LF transmission antenna is provided in each of the front and rear tires. It is possible to provide a tire pressure monitoring system and a monitoring device that can monitor the tire pressure detected by the detection device.
［本願発明の実施形態の説明］
　最初に本発明の実施態様を列記して説明する。また、以下に記載する実施形態の少なくとも一部を任意に組み合わせてもよい。 [Description of Embodiment of Present Invention]
First, embodiments of the present invention will be listed and described. Moreover, you may combine arbitrarily at least one part of embodiment described below.
（１）本態様に係るタイヤ空気圧監視システムは、車両の前後のタイヤに設けられており、該タイヤの空気圧を検出する複数の検出装置と、各検出装置の識別子を用いて該検出装置と無線通信を行うことにより、各タイヤの空気圧を監視する監視装置とを備える空気圧監視システムであって、前記監視装置は、前記車両の一側面寄りであり、前記前後のタイヤの間に設けられた第１アンテナと、前記車両の前寄り又は後寄りに設けられた第２アンテナと、前記検出装置に、該検出装置の識別子を含む応答信号を要求する要求信号を前記第１アンテナ及び第２アンテナから各別に送信させる要求信号送信部とを備え、前記前後のタイヤに設けられた前記検出装置は、前記第１アンテナ又は前記第２アンテナから送信された前記要求信号を受信する要求信号受信部と、該要求信号受信部にて前記要求信号を受信した場合、自装置の識別子を含む応答信号を送信する応答信号送信部とを備え、前記監視装置は、前記検出装置から送信された応答信号を受信する応答信号受信部と、前記第１アンテナから送信された前記要求信号に応じて前記前後のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子と、前記第２アンテナから送信された前記要求信号に応じて前側又は後側のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子とに基づいて、前記前後のタイヤに設けられた前記検出装置の識別子を特定する特定部とを備える。 (1) A tire air pressure monitoring system according to this aspect 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. One antenna, a second antenna provided near 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 to the detection device 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 request signal receiving unit; and a response signal transmitting unit that transmits a response signal including an identifier of the own device when the request signal is received by the request signal receiving unit, and the monitoring device transmits from the detection device 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.
　本態様にあっては、第１アンテナから送信される要求信号は、車両の前後のタイヤに設けられた検出装置によって受信される。第２アンテナから送信される要求信号は、車両の前側又は後側のタイヤに設けられた検出装置によって受信される。各検出装置は、要求信号を受信した場合、自装置の識別子を含む応答信号を送信し、監視装置は、第１アンテナ及び第２アンテナから送信された要求信号に応じて検出装置から送信された応答信号を受信する。
　従って、第１アンテナから要求信号が送信された場合、監視装置は、前側のタイヤに設けられた検出装置の識別子が含まれる応答信号と、後側のタイヤに設けられた検出装置の識別子が含まれる応答信号とを受信する。
　また、第２アンテナから要求信号が送信された場合、監視装置は、前側又は後側のタイヤのいずれかに設けられた検出装置の識別子が含まれる応答信号を受信する。例えば、監視装置は、前側のタイヤに設けられた検出装置の識別子が含まれる応答信号を受信した場合、後側のタイヤに設けられた検出装置の識別子が含まれる応答信号は受信しない。同様に、監視装置は、後側のタイヤに設けられた検出装置の識別子が含まれる応答信号を受信した場合、前側のタイヤに設けられた検出装置の識別子が含まれる応答信号は受信しない。
　よって、監視装置は、各応答信号に含まれる識別子に基づいて、前後の各タイヤに設けられた検出装置の識別子をそれぞれ特定することができる。
　なお、本態様（１）を構成する第１アンテナ及び第２アンテナは、必ずしもスマートエントリ（登録商標）システム又はスマートスタート（登録商標）システムを構成するアンテナと兼用されるものでは無い。 In this aspect, 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. When 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.
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.
In addition, 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.
（２）前記第１アンテナは、前記検出装置によって受信が可能な前記要求信号の送信範囲に右前及び右後の前記タイヤが含まれ、左前及び左後の前記タイヤが含まれないように、前記車両の右側面寄りに設けられた右側アンテナと、前記検出装置によって受信が可能な前記要求信号の送信範囲に左前及び左後の前記タイヤが含まれ、右前及び右後の前記タイヤが含まれないように、前記車両の左側面寄りに設けられた左側アンテナとを含み、前記第２アンテナは、前記検出装置によって受信が可能な前記要求信号の送信範囲に右後及び左後の前記タイヤが含まれ、右前及び左前の前記タイヤが含まれないように、前記車両の後寄りに設けられている構成が好ましい。 (2) 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. Thus, 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. In addition, a configuration provided at the rear of the vehicle is preferable so that the right front and left front tires are not included.
　本態様によれば、車両の右側面寄り、左側面寄り及び後寄りに設けられた３つのＬＦ送信アンテナを用いて、車両の前後左右の４つのタイヤに設けられた検出装置の識別子をそれぞれ特定することができる。 According to this aspect, 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.
（３）前記特定部は、前記右側アンテナから送信された前記要求信号に対する前記応答信号に含まれ、前記第２アンテナから送信された前記要求信号に対する前記応答信号に含まれない前記識別子を、右前の前記タイヤに設けられた前記検出装置の識別子として特定する構成が好ましい。 (3) 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.
　本態様によれば、右前のタイヤに設けられた検出装置の識別子を特定することができる。 According to this aspect, the identifier of the detection device provided on the right front tire can be specified.
（４）前記特定部は、前記右側アンテナ及び前記第２アンテナから送信された前記要求信号に対する前記応答信号の双方に含まれる前記識別子を、右後の前記タイヤに設けられた前記検出装置の識別子として特定する構成が好ましい。 (4) 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 configuration specified as is preferable.
　本態様によれば、右後のタイヤに設けられた検出装置の識別子を特定することができる。 According to this aspect, the identifier of the detection device provided in the right rear tire can be specified.
（５）前記特定部は、前記左側アンテナから送信された前記要求信号に対する前記応答信号に含まれ、前記第２アンテナから送信された前記要求信号に対する前記応答信号に含まれない前記識別子を、左前の前記タイヤに設けられた前記検出装置の識別子として特定する構成が好ましい。 (5) 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.
　本態様によれば、左前のタイヤに設けられた検出装置の識別子を特定することができる。 According to this aspect, it is possible to specify the identifier of the detection device provided in the front left tire.
（６）前記特定部は、前記左側アンテナ及び前記第２アンテナから送信された前記要求信号に対する前記応答信号の双方に含まれる前記識別子を、左後の前記タイヤに設けられた前記検出装置の識別子として特定する構成が好ましい。 (6) 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 configuration specified as is preferable.
　本態様によれば、左後のタイヤに設けられた検出装置の識別子を特定することができる。 According to this aspect, it is possible to specify the identifier of the detection device provided on the left rear tire.
（７）本態様に係る監視装置は、車両の前後のタイヤに設けられており、該タイヤの空気圧を検出する複数の検出装置と、各検出装置の識別子を用いて無線通信を行うことにより、各タイヤの空気圧を監視する監視装置であって、前記車両の一側面寄りであり、前記前後のタイヤの間に設けられた第１アンテナと、前記車両の前寄り又は後寄りに設けられた第２アンテナと、前記検出装置に、該検出装置の識別子を含む応答信号を要求する要求信号を前記第１アンテナ及び第２アンテナから各別に送信させる要求信号送信部と前記要求信号を受信した前記検出装置から送信された前記応答信号を受信する応答信号受信部と前記第１アンテナから送信された前記要求信号に応じて前記前後のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子と、前記第２アンテナから送信された前記要求信号に応じて前側又は後側のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子とに基づいて、前記前後のタイヤに設けられた前記検出装置の識別子を特定する特定部とを備える。 (7) The monitoring device according to this aspect 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. Two antennas, 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 A response signal received from the detection device provided on the front and rear tires in response to the request signal transmitted from the first antenna and a response signal receiving unit that receives the response signal transmitted from the device And 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.
　本態様によれば、態様（１）と同様、監視装置は、各応答信号に含まれる識別子に基づいて、前後の各タイヤに設けられた検出装置の識別子をそれぞれ特定することができる。 According to this aspect, similarly to aspect (1), 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.
［本発明の実施形態の詳細］
　本発明の実施形態に係るタイヤ空気圧監視システムの具体例を、以下に図面を参照しつつ説明する。なお、本発明はこれらの例示に限定されるものではなく、請求の範囲によって示され、請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。 [Details of the embodiment of the present invention]
A specific example of a tire pressure monitoring system according to an embodiment of the present invention will be described below with reference to the drawings. In addition, this invention is not limited to these illustrations, is shown by the claim, and intends that all the changes within the meaning and range equivalent to a claim are included.
　図１は、本発明の実施形態に係るタイヤ空気圧監視システムの一構成例を示す概念図である。本実施形態に係るタイヤ空気圧監視システムは、車体の適宜箇所に設けられた監視装置１と、車両Ｃに設けられた複数のタイヤ３のホイールそれぞれに設けられた複数の検出装置２と、報知装置４とを備える。本実施形態のタイヤ空気圧監視システムでは、監視装置１が、複数の検出装置２に固有のセンサ識別子を用いて各検出装置２と無線通信を行うことにより、各タイヤ３の空気圧情報を取得し、報知装置４は取得した空気圧情報に応じた報知を行う。 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. In the tire pressure monitoring system of the present embodiment, 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.
　監視装置１には、複数のＬＦ送信アンテナ５が接続されている。例えば、複数のＬＦ送信アンテナ５は、車両Ｃの右側面部、前後方向略中央部に設けられた右側アンテナ５１（第１アンテナ）と、車両Ｃの左側面部、前後方向略中央部に設けられた左側アンテナ５２（第１アンテナ）と、車両Ｃの後部、左右方向略中央部に設けられた後部アンテナ５３（第２アンテナ）とを含む。 A plurality of LF transmission antennas 5 are connected to the monitoring device 1. For example, 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.
　監視装置１は、少なくともセンサ識別子を含む応答信号を要求する要求信号を、各ＬＦ送信アンテナ５からＬＦ帯の電波により検出装置２へ送信する。例えば、監視装置１は、タイヤ３の空気圧及びセンサ識別子を含む応答信号を要求する要求信号を、各ＬＦ送信アンテナ５からＬＦ帯の電波により検出装置２へ送信する。
　検出装置２は、要求信号を受信した場合、少なくとも自装置のセンサ識別子を含む応答信号をＵＨＦ（Ultra High Frequency）帯の電波により監視装置１へ送信する。例えば、空気圧の情報を要求された場合、検出装置２は、タイヤ３の空気圧を検出し、検出して得た空気圧及び自装置のセンサ識別子を含む応答信号を監視装置１へ送信する。
　監視装置１は、ＲＦ受信アンテナ１３ａを備え、各検出装置２から送信された応答信号をＲＦ受信アンテナ１３ａにて受信し、該応答信号から各タイヤ３に設けられた検出装置２のセンサ識別子、空気圧等の情報を取得する。
　なおＬＦ帯及びＵＨＦ帯は無線通信を行う際に用いる電波帯域の一例であり、必ずしもこれに限定されない。 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. For example, 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.
When 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. For example, when air pressure information is requested, 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.
Note that 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.
　監視装置１には通信線を介して報知装置４が接続されており、監視装置１は取得した空気圧の情報を報知装置４へ送信する。報知装置４は監視装置１から送信された空気圧の情報を受信し、各タイヤ３の空気圧を報知する。また、報知装置４はタイヤ３の空気圧が所定の閾値未満である場合、警告を発する。 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.
　図２は、各ＬＦ送信アンテナ５の通信範囲を示す概念図である。
　図中５１ａは、右側アンテナ５１から送信される要求信号の送信範囲であって、検出装置２によって当該要求信号を受信することができる範囲を示している。図２から分かるように、送信範囲５１ａには、右前及び右後のタイヤ３に設けられた検出装置２が含まれ、左前及び左後のタイヤ３に設けられた検出装置２は含まれない。
　図中５２ａは、左側アンテナ５２から送信される要求信号の送信範囲であって、検出装置２によって当該要求信号を受信することができる範囲を示している。図２から分かるように、送信範囲５２ａには、左前及び左後のタイヤ３に設けられた検出装置２が含まれ、右前及び右後のタイヤ３に設けられた検出装置２は含まれない。
　図中５３ａは、後部アンテナ５３から送信される要求信号の送信範囲であって、検出装置２によって当該要求信号を受信することができる範囲を示している。図２から分かるように、送信範囲５３ａには、右後及び左後のタイヤ３に設けられた検出装置２が含まれ、右前及び左前のタイヤ３に設けられた検出装置２は含まれない。 FIG. 2 is a conceptual diagram showing the communication range of each LF transmission antenna 5.
In the figure, 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. As can be seen from FIG. 2, 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.
In the figure, 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. As can be seen from FIG. 2, 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.
In the figure, 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. As can be seen from FIG. 2, 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.
　図３は、本発明の実施形態に係る監視装置１の一構成例を示すブロック図である。監視装置１は、該監視装置１の各構成部の動作を制御する監視制御部１１を備える。監視制御部１１には、記憶部１２、応答信号受信部１３、要求信号送信部１４及び車内通信部１５が接続されている。 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.
　監視制御部１１は、例えば一又は複数のＣＰＵ（Central Processing Unit）、マルチコアＣＰＵ、ＲＯＭ（Read Only Memory）、ＲＡＭ（Random Access Memory）、入出力インタフェース等を有するマイコンである。監視制御部１１のＣＰＵは入出力インタフェースを介して記憶部１２、応答信号受信部１３、要求信号送信部１４及び車内通信部１５に接続している。監視制御部１１は記憶部１２に記憶されている制御プログラムを実行することにより、各構成部の動作を制御し、本実施形態に係るタイヤ空気圧監視処理を実行する。 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.
　記憶部１２は、ＥＥＰＲＯＭ（Electrically Erasable Programmable ROM）、フラッシュメモリ等の不揮発性メモリである。記憶部１２は、監視制御部１１が監視装置１の各構成部の動作を制御することにより、タイヤ空気圧監視処理を実行するための制御プログラムを記憶している。また、記憶部１２は、識別子テーブルを記憶している。識別子テーブルは、複数のタイヤ位置と、当該タイヤ位置のタイヤ３に設けられた検出装置２のセンサ識別子とを対応付けて記憶している。なお、タイヤ位置は、タイヤハウス及びその周辺の位置である。 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. In addition, a tire position is a tire house and its peripheral position.
　応答信号受信部１３には、ＲＦ受信アンテナ１３ａが接続されている。応答信号受信部１３は、検出装置２からＲＦ帯の電波を用いて送信された信号を、ＲＦ受信アンテナ１３ａにて受信する。応答信号受信部１３は、受信した信号を復調し、復調された信号を監視制御部１１へ出力する回路である。搬送波としては３００ＭＨｚ～３ＧＨｚのＵＨＦ帯を使用するが、この周波数帯に限定するものでは無い。 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.
　要求信号送信部１４は、監視制御部１１から出力された信号をＬＦ帯の信号に変調し、変調された信号を複数のＬＦ送信アンテナ５からそれぞれ各別に検出装置２へ送信する回路である。搬送波としては３０ｋＨｚ～３００ｋＨｚのＬＦ帯を使用するが、この周波数帯に限定するものでは無い。 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.
　車内通信部１５は、ＣＡＮ（Controller Area Network）又はＬＩＮ（Local Interconnect Network）等の通信プロトコルに従って通信を行う通信回路であり、報知装置４に接続されている。車内通信部１５は、監視制御部１１の制御に従って、タイヤ３の空気圧に係る情報を報知装置４へ送信する。 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.
　報知装置４は、例えば、車内通信部１５から送信されたタイヤ３の空気圧に係る情報を画像によって報知するマルチインフォメーションディスプレイ、ヘッドアップディスプレイ等である。例えば、報知装置４は、車両Ｃに設けられた各タイヤ３の空気圧情報を表示する。また、報知装置４は、画像又は音声によって報知する表示部又はスピーカを備えたオーディオ機器等であっても良い。表示部は液晶ディスプレイ、有機ＥＬディスプレイ等である。 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. For example, the notification device 4 displays air pressure information of each tire 3 provided in the vehicle C. Further, 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.
　図４は、検出装置２の一構成例を示すブロック図である。検出装置２は、該検出装置２の各構成部の動作を制御するセンサ制御部２１を備える。センサ制御部２１には、センサ用記憶部２２、応答信号送信部２３、要求信号受信部２４、空気圧検出部２５及び温度検出部２６が接続されている。 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.
　センサ制御部２１は、例えば一又は複数のＣＰＵ、マルチコアＣＰＵ、ＲＯＭ、ＲＡＭ、入出力インタフェース等を有するマイコンである。センサ制御部２１のＣＰＵは入出力インタフェースを介してセンサ用記憶部２２、応答信号送信部２３、要求信号受信部２４、空気圧検出部２５及び温度検出部２６に接続している。センサ制御部２１はセンサ用記憶部２２に記憶されている制御プログラムを読み出し、各部を制御する。検出装置２は、図示しない電池を備え、当該電池からの電力により動作する。 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.
　センサ用記憶部２２は不揮発性メモリである。センサ用記憶部２２には、センサ制御部２１のＣＰＵがタイヤ３の空気圧の検出及び送信に係る処理を行うための制御プログラムが記憶されている。また、自装置と、他の検出装置２とを識別するための固有のセンサ識別子を記憶している。 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.
　空気圧検出部２５は、例えばダイヤフラムを備え、圧力の大きさによって変化するダイヤフラムの変形量に基づき、タイヤ３の空気圧を検出する。空気圧検出部２５は検出したタイヤ３の空気圧を示す信号をセンサ制御部２１へ出力する。 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.
　温度検出部２６は、例えば温度によって電気抵抗が変化する素子を備え、温度変化によって変化する素子間の電圧に基づき、タイヤ３の温度を検出する。温度検出部２６は検出したタイヤ３の温度を示す信号をセンサ制御部２１へ出力する。 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.
　応答信号送信部２３には、ＲＦ送信アンテナ２３ａが接続されている。応答信号送信部２３は、センサ制御部２１が生成した応答信号をＵＨＦ帯の信号に変調し、変調した応答信号を、ＲＦ送信アンテナ２３ａを用いて送信する。 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.
　要求信号受信部２４には、ＬＦ受信アンテナ２４ａが接続されている。要求信号受信部２４は、監視装置１からＬＦ帯の電波を用いて送信された要求信号を、ＬＦ受信アンテナ２４ａにて受信し、受信した信号をセンサ制御部２１へ出力する。 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.
　このように構成された検出装置２のセンサ制御部２１は、制御プログラムを実行することにより、要求信号の内容に応じた応答信号を生成し、応答信号送信部２３にて監視装置１へ送信する。例えば、要求信号受信部２４が空気圧の情報を要求する要求信号を受信した場合、センサ制御部２１は、センサ用記憶部２２が記憶するセンサ識別子を含む応答信号を応答信号送信部２３にて送信する。要求信号に応じて、空気圧検出部２５及び温度検出部２６からタイヤ３の空気圧及び温度を取得し、空気圧、温度及び検出装置２に固有のセンサ識別子等を含む応答信号を応答信号送信部２３にて送信する。 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. . For example, when the request signal receiving unit 24 receives a request signal for requesting air pressure information, 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. To do. In response to the request signal, 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.
　次に、タイヤ空気圧監視処理の手順を説明する。以下、監視装置１は、各タイヤ３に設けられた検出装置２のセンサ識別子を特定すると共に、空気圧の情報を取得する例を説明する。なお、監視装置１は、センサ識別子の情報のみを各検出装置２に要求し、各タイヤ３に設けられた検出装置２のセンサ識別子を特定する処理のみを実行しても良い。 Next, the procedure of the tire pressure monitoring process will be described. Hereinafter, an example will be described in which the monitoring device 1 specifies the sensor identifier of the detection device 2 provided in each tire 3 and acquires air pressure information. Note that 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.
　図５は、空気圧監視に係る監視装置１の処理手順を示すフローチャート、図６は、受信した応答信号に含まれるセンサ識別子を示すテーブルである。本実施形態に係る以下の処理を実行するタイミングは特に限定されるものでは無いが、例えば、車両Ｃのイグニッションスイッチがオフ状態からオン状態になるタイミングで実行すると良い。監視制御部１１は、空気圧情報を要求する要求信号を、右側アンテナ５１から送信させる（ステップＳ１１）。そして、監視制御部１１は、要求信号を受信した検出装置２から送信された応答信号を受信し（ステップＳ１２）、受信した応答信号に含まれるセンサ識別子及び空気圧を右側アンテナ５１と対応付けて記憶する（ステップＳ１３）。右側アンテナ５１から要求信号を送信した場合、右前及び右後のタイヤ３に設けられた検出装置２から応答信号が送信されるため、例えば図６上欄に示すように、２つの応答信号に含まれるセンサ識別子「０００１」及び「０００２」を記憶する。なお、この段階では、各センサ識別子が、右前及び左前のいずれの検出装置２のセンサ識別子であるかは特定できない。 FIG. 5 is a flowchart showing a processing procedure of the monitoring apparatus 1 related to air pressure monitoring, and FIG. 6 is a table showing sensor identifiers included in the received response signal. Although the timing which performs the following processes which concern on this embodiment is not specifically limited, For example, it is good to perform at the timing which the ignition switch of the vehicle C becomes an ON state from an OFF state. The monitoring controller 11 transmits a request signal for requesting air pressure information from the right antenna 51 (step S11). Then, 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). When a request signal is transmitted from the right antenna 51, 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. Stored sensor identifiers “0001” and “0002”. At this stage, it cannot be specified whether each sensor identifier is the sensor identifier of the right front or left front detection device 2.
　次いで、監視制御部１１は、空気圧情報を要求する要求信号を、左側アンテナ５２から送信させる（ステップＳ１４）。そして、監視制御部１１は、要求信号を受信した検出装置２から送信された応答信号を受信し（ステップＳ１５）、受信した応答信号に含まれるセンサ識別子及び空気圧を左側アンテナ５２と対応付けて記憶する（ステップＳ１６）。左側アンテナ５２から要求信号を送信した場合、左前及び左後のタイヤ３に設けられた検出装置２から応答信号が送信されるため、例えば図６中欄に示すように、２つの応答信号に含まれるセンサ識別子「０００３」及び「０００４」を記憶する。 Next, 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). When 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”.
　次いで、監視制御部１１は、空気圧情報を要求する要求信号を、後部アンテナ５３から送信させる（ステップＳ１７）。そして、監視制御部１１は、要求信号を受信した検出装置２から送信された応答信号を受信し（ステップＳ１８）、受信した応答信号に含まれるセンサ識別子及び空気圧を左側アンテナ５２と対応付けて記憶する（ステップＳ１９）。後部アンテナ５３から要求信号を送信した場合、右後及び左後のタイヤ３に設けられた検出装置２から応答信号が送信されるため、例えば図６下欄に示すように、２つの応答信号に含まれるセンサ識別子「０００２」及び「０００４」を記憶する。 Next, 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). When 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.
　そして、監視制御部１１は、ステップＳ１３、ステップＳ１６、及びステップＳ１９にて記憶した各センサ識別子に基づいて、前後左右の４つのタイヤ３に設けられた検出装置２のセンサ識別子を特定する処理を実行する（ステップＳ２０）。 And 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 | stored in step S13, step S16, and step S19. Execute (Step S20).
　以下、ステップＳ２０にて実行する処理の詳細を説明する。
　図７は、各タイヤ３に設けられた検出装置２のセンサ識別子特定方法を示す図表である。
　まず、監視制御部１１は、記憶した４つのセンサ識別子「０００１」、「０００２」、「０００３」及び「０００４」の内、前後左右のタイヤ位置との対応関係が未特定の一のセンサ識別子を選択する。ここで選択されたセンサ識別子を、一のセンサ識別子と呼ぶ。図７中、「有り」は、各ＬＦ送信アンテナ５から送信された要求信号に対する応答信号に、一のセンサ識別子が含まれていることを示し、「無し」は、当該応答信号に一のセンサ識別子が含まれていないことを示す。 Hereinafter, the details of the process executed in step S20 will be described.
FIG. 7 is a chart showing a sensor identifier specifying method of the detection device 2 provided in each tire 3.
First, 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. In FIG. 7, “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.
　監視制御部１１は、一のセンサ識別子が、右側アンテナ５１から送信された要求信号に対する応答信号に含まれ、左側アンテナ５２及び後部アンテナ５３からそれぞれ送信された要求信号に対する応答信号に含まれていないと判定した場合、一のセンサ識別子を、右前のタイヤ位置のセンサ識別子として記憶する。
　同様に、監視制御部１１は、一のセンサ識別子が、右側アンテナ５１及び後部アンテナ５３からそれぞれ送信された要求信号に対する応答信号に含まれ、左側アンテナ５２から送信された要求信号に対する応答信号に含まれていないと判定した場合、一のセンサ識別子を、右後のタイヤ位置のセンサ識別子として記憶する。
　監視制御部１１は、一のセンサ識別子が、右側アンテナ５１及び後部アンテナ５３からそれぞれ送信された要求信号に対する応答信号に含まれておらず、左側アンテナ５２から送信された要求信号に対する応答信号に含まれていると判定した場合、一のセンサ識別子を、左前のタイヤ位置のセンサ識別子として記憶する。
　監視制御部１１は、一のセンサ識別子が、右側アンテナ５１から送信された要求信号に対する応答信号に含まれておらず、左側アンテナ５２及び後部アンテナ５３からそれぞれ送信された要求信号に対する応答信号に含まれていると判定した場合、一のセンサ識別子を、左後のタイヤ位置のセンサ識別子として記憶する。 In the monitoring control unit 11, 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.
In the monitoring control unit 11, 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.
　図８は、各タイヤ３の検出装置２及びセンサ識別子の対応関係を示すテーブルである。図６に示すようなセンサ識別子を含む応答信号を受信していた場合、上記処理によって、前後左右のタイヤ位置に対応するセンサ識別子が、図８の表に示すように対応付けられる。 FIG. 8 is a table showing the correspondence between the detection device 2 and sensor identifier of each tire 3. When a response signal including a sensor identifier as shown in FIG. 6 is received, sensor identifiers corresponding to front, rear, left and right tire positions are associated with each other as shown in the table of FIG.
　例えば、一のセンサ識別子として、センサ識別子「０００１」が選択された場合、当該センサ識別子「０００１」は右側アンテナ５１から送信された要求信号に対する応答信号に含まれ、左側アンテナ５２及び後部アンテナ５３から送信された要求信号に対する応答信号に含まれないため、図７中「右前タイヤの検出装置」列の通り、当該センサ識別子は、右前のタイヤ位置のセンサ識別子として特定される。
　同様に、一のセンサ識別子として、センサ識別子「０００２」が選択された場合、当該センサ識別子「０００２」は右側アンテナ５１及び後部アンテナ５３から送信された要求信号に対する応答信号の双方に含まれ、左側アンテナ５２から送信された要求信号に対する応答信号が含まれていないため、当該センサ識別子は、図７中「右後タイヤの検出装置」列の通り、右後のタイヤ位置のセンサ識別子として特定される。
　同様に、一のセンサ識別子として、センサ識別子「０００３」が選択された場合、当該センサ識別子「０００３」は左側アンテナ５２から送信された要求信号に対する応答信号に含まれ、右側アンテナ５１及び後部アンテナ５３から送信された要求信号に対する応答信号に含まれないため、図７中「左前タイヤの検出装置」列の通り、当該センサ識別子は、左前のタイヤ位置のセンサ識別子として特定される。
　同様に、一のセンサ識別子として、センサ識別子「０００４」が選択された場合、当該センサ識別子「０００４」は、右側アンテナ５１から送信された要求信号に対する応答信号に含まれておらず、左側アンテナ５２及び後部アンテナ５３から送信された要求信号に対する応答信号の双方に含まれるため、当該センサ識別子は、図７中「左後タイヤの検出装置」列の通り、左後のタイヤ位置のセンサ識別子として特定される。 For example, 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.
Similarly, 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. Therefore, 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.
Similarly, when 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.
　このように構成されたタイヤ空気圧監視システム及び監視装置１によれば、ＬＦ送信アンテナ５が車両Ｃの前後方向略中央部の右側面部及び左側面部に設けられた場合であっても、クロストークの問題を解消し、前後左右の各タイヤ３に設けられた検出装置２のセンサ識別子及び空気圧を特定し、各タイヤ３の空気圧を監視することができる。 According to the tire pressure monitoring system and the monitoring apparatus 1 configured as described above, even if 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 problem can be solved, 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.
　また、本実施形態によれば、車両Ｃの右側面部、左側面部及び後部に設けられた３つのＬＦ送信アンテナ５を用いて、車両Ｃの前後左右の４つのタイヤ３に設けられた検出装置２のセンサ識別子をそれぞれ特定することができる。 Further, according to the present embodiment, 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.
　なお、本実施形態では、右側アンテナ５１及び左側アンテナ５２と、後部アンテナ５３とを用いて、４つのタイヤ位置及びセンサ識別子を対応付ける例を説明したが、右側アンテナ５１及び左側アンテナ５２と、車両Ｃの前部に設けた前部アンテナを用いて、４つのタイヤ位置及びセンサ識別子を対応付けるように構成しても良い。 In the present embodiment, 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. However, 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.
　また、本実施形態では、右側アンテナ５１、左側アンテナ５２及び後部アンテナ５３をタイヤ空気圧監視用のアンテナとして説明したが、スマートエントリ（登録商標）システム又はスマートスタート（登録商標）システムを構成するアンテナとして兼用しても良い。 In the present embodiment, 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.
　今回開示された実施形態はすべての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は、上記した意味ではなく、請求の範囲によって示され、請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。 It should be considered that the embodiment disclosed this time is illustrative in all respects and not restrictive. The scope of the present invention is defined not by the above-described meaning but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.
　１　監視装置
　２　検出装置
　３　タイヤ
　４　報知装置
　５　ＬＦ送信アンテナ
　１１　監視制御部
　１２　記憶部
　１３　応答信号受信部
　１３ａ　ＲＦ受信アンテナ
　１４　要求信号送信部
　１５　車内通信部
　２１　センサ制御部
　２２　センサ用記憶部
　２３　応答信号送信部
　２３ａ　ＲＦ送信アンテナ
　２４　要求信号受信部
　２４ａ　ＬＦ受信アンテナ
　２５　空気圧検出部
　２６　温度検出部
　５１　右側アンテナ
　５１ａ　送信範囲
　５２　左側アンテナ
　５２ａ　送信範囲
　５３　後部アンテナ
　５３ａ　送信範囲
　Ｃ　車両 DESCRIPTION OF SYMBOLS 1 Monitoring apparatus 2 Detection apparatus 3 Tire 4 Notification apparatus 5 LF transmission antenna 11 Monitoring control part 12 Storage part 13 Response signal receiving part 13a RF receiving antenna 14 Request signal transmission part 15 In-vehicle communication part 21 Sensor control part 22 Sensor storage part 23 Response signal transmission unit 23a RF transmission antenna 24 Request signal reception unit 24a LF reception antenna 25 Air pressure detection unit 26 Temperature detection unit 51 Right antenna 51a Transmission range 52 Left antenna 52a Transmission range 53 Rear antenna 53a Transmission range C Vehicle

Claims (7)

  1. 　車両の前後のタイヤに設けられており、該タイヤの空気圧を検出する複数の検出装置と、各検出装置の識別子を用いて該検出装置と無線通信を行うことにより、各タイヤの空気圧を監視する監視装置とを備える空気圧監視システムであって、
    　前記監視装置は、
    　前記車両の一側面寄りであり、前記前後のタイヤの間に設けられた第１アンテナと、
    　前記車両の前寄り又は後寄りに設けられた第２アンテナと、
    　前記検出装置に、該検出装置の識別子を含む応答信号を要求する要求信号を前記第１アンテナ及び第２アンテナから各別に送信させる要求信号送信部と
    　を備え、
    　前記前後のタイヤに設けられた前記検出装置は、
    　前記第１アンテナ又は前記第２アンテナから送信された前記要求信号を受信する要求信号受信部と、
    　該要求信号受信部にて前記要求信号を受信した場合、自装置の識別子を含む応答信号を送信する応答信号送信部と
    　を備え、
    　前記監視装置は、
    　前記検出装置から送信された応答信号を受信する応答信号受信部と、
    　前記第１アンテナから送信された前記要求信号に応じて前記前後のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子と、前記第２アンテナから送信された前記要求信号に応じて前側又は後側のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子とに基づいて、前記前後のタイヤに設けられた前記検出装置の識別子を特定する特定部と
    　を備えるタイヤ空気圧監視システム。     A plurality of detection devices that are provided on tires before and after the vehicle and that detect the air pressure of the tires, and wirelessly communicate with the detection devices using identifiers of the detection devices, thereby monitoring the air pressure of each tire. A pneumatic monitoring system comprising a monitoring device,
    The monitoring device
    A first antenna located near one side of the vehicle and provided between the front and rear tires;
    A second antenna provided near the front or rear of the vehicle;
    A request signal transmission unit that causes the detection device to transmit a request signal for requesting a response signal including an identifier of the detection device separately from the first antenna and the second antenna;
    The detection device provided in the front and rear tires,
    A request signal receiving unit that receives the request signal transmitted from the first antenna or the second antenna;
    When the request signal is received by the request signal receiving unit, a response signal transmitting unit that transmits a response signal including an identifier of the own device, and
    The monitoring device
    A response signal receiving unit for receiving a response signal transmitted from the detection device;
    In response to the request signal transmitted from the first antenna, the 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, and the request signal transmitted from the second antenna And a specifying unit that specifies an identifier of the detection device provided in the front and rear tires based on an identifier included in a response signal transmitted from the detection device provided in the front or rear tire. Tire pressure monitoring system.
  2. 　前記第１アンテナは、
    　前記検出装置によって受信が可能な前記要求信号の送信範囲に右前及び右後の前記タイヤが含まれ、左前及び左後の前記タイヤが含まれないように、前記車両の右側面寄りに設けられた右側アンテナと、
    　前記検出装置によって受信が可能な前記要求信号の送信範囲に左前及び左後の前記タイヤが含まれ、右前及び右後の前記タイヤが含まれないように、前記車両の左側面寄りに設けられた左側アンテナと
    　を含み、
    　前記第２アンテナは、
    　前記検出装置によって受信が可能な前記要求信号の送信範囲に右後及び左後の前記タイヤが含まれ、右前及び左前の前記タイヤが含まれないように、前記車両の後寄りに設けられている
    　請求項１に記載のタイヤ空気圧監視システム。     The first antenna is
    The transmission range of the request signal that can be received by the detection device is provided near the right side of the vehicle so that the right front and right rear tires are included, and the left front and left rear tires are not included. The right antenna,
    The transmission range of the request signal that can be received by the detection device is provided near the left side of the vehicle so that the front left and rear left tires are included, and the front right and rear right tires are not included. Including the left antenna and
    The second antenna is
    The transmission range of the request signal that can be received by the detection device includes the right rear and left rear tires, and is provided behind the vehicle so that the right front and left front tires are not included. The tire pressure monitoring system according to claim 1.
  3. 　前記特定部は、
    　前記右側アンテナから送信された前記要求信号に対する前記応答信号に含まれ、前記第２アンテナから送信された前記要求信号に対する前記応答信号に含まれない前記識別子を、右前の前記タイヤに設けられた前記検出装置の識別子として特定する
    　請求項２に記載のタイヤ空気圧監視システム。     The specific part is:
    The identifier included in the response signal with respect to the request signal transmitted from the right antenna and not included in the response signal with respect to the request signal transmitted from the second antenna is provided in the tire on the right front The tire pressure monitoring system according to claim 2, which is specified as an identifier of the detection device.
  4. 　前記特定部は、
    　前記右側アンテナ及び前記第２アンテナから送信された前記要求信号に対する前記応答信号の双方に含まれる前記識別子を、右後の前記タイヤに設けられた前記検出装置の識別子として特定する
    　請求項２又は請求項３に記載のタイヤ空気圧監視システム。     The specific part is:
    The identifier included in both of the response signals to the request signal transmitted from the right antenna and the second antenna is specified as an identifier of the detection device provided on the right rear tire. Item 4. The tire pressure monitoring system according to Item 3.
  5. 　前記特定部は、
    　前記左側アンテナから送信された前記要求信号に対する前記応答信号に含まれ、前記第２アンテナから送信された前記要求信号に対する前記応答信号に含まれない前記識別子を、左前の前記タイヤに設けられた前記検出装置の識別子として特定する
    　請求項２～請求項４までのいずれか一項に記載のタイヤ空気圧監視システム。     The specific part is:
    The identifier included in the response signal with respect to the request signal transmitted from the left antenna and not included in the response signal with respect to the request signal transmitted from the second antenna, the tire provided on the left front The tire pressure monitoring system according to any one of claims 2 to 4, which is specified as an identifier of a detection device.
  6. 　前記特定部は、
    　前記左側アンテナ及び前記第２アンテナから送信された前記要求信号に対する前記応答信号の双方に含まれる前記識別子を、左後の前記タイヤに設けられた前記検出装置の識別子として特定する
    　請求項２～請求項５までのいずれか一項に記載のタイヤ空気圧監視システム。     The specific part is:
    The identifier included in both of the response signals to the request signal transmitted from the left antenna and the second antenna is specified as an identifier of the detection device provided in the left rear tire. The tire pressure monitoring system according to any one of Items 5 to 5.
  7. 　車両の前後のタイヤに設けられており、該タイヤの空気圧を検出する複数の検出装置と、各検出装置の識別子を用いて無線通信を行うことにより、各タイヤの空気圧を監視する監視装置であって、
    　前記車両の一側面寄りであり、前記前後のタイヤの間に設けられた第１アンテナと、
    　前記車両の前寄り又は後寄りに設けられた第２アンテナと、
    　前記検出装置に、該検出装置の識別子を含む応答信号を要求する要求信号を前記第１アンテナ及び第２アンテナから各別に送信させる要求信号送信部と
    　前記要求信号を受信した前記検出装置から送信された前記応答信号を受信する応答信号受信部と
    　前記第１アンテナから送信された前記要求信号に応じて前記前後のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子と、前記第２アンテナから送信された前記要求信号に応じて前側又は後側のタイヤに設けられた前記検出装置から送信された応答信号に含まれる識別子とに基づいて、前記前後のタイヤに設けられた前記検出装置の識別子を特定する特定部と
    　を備える監視装置。     A monitoring device that is provided on tires before and after a vehicle and that monitors the air pressure of each tire by performing wireless communication using a plurality of detection devices that detect the air pressure of the tire and an identifier of each detection device. And
    A first antenna located near one side of the vehicle and provided between the front and rear tires;
    A second antenna provided near the front or rear of the vehicle;
    A request signal transmission unit for transmitting a request signal for requesting a response signal including an identifier of the detection device from the first antenna and the second antenna, and a detection signal transmitted from the detection device that has received the request signal. A response signal receiving unit that receives the response signal; an identifier included in a 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 A monitoring device comprising: a specifying unit that specifies an identifier of the detection device.
PCT/JP2017/015265 2016-04-28 2017-04-14 Tire-pressure monitoring system and monitoring device WO2017188025A1 (en)

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JP2007261455A (en) * 2006-03-29 2007-10-11 Aisin Seiki Co Ltd Tire information monitoring system
JP2012245931A (en) * 2011-05-30 2012-12-13 Alps Electric Co Ltd Wheel identification information determination system

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JP2007261455A (en) * 2006-03-29 2007-10-11 Aisin Seiki Co Ltd Tire information monitoring system
JP2012245931A (en) * 2011-05-30 2012-12-13 Alps Electric Co Ltd Wheel identification information determination system

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