JP4718245B2 - Tire pressure sensor ID registration apparatus and method - Google Patents

Description

  The present invention relates to an ID registration apparatus and method for registering an ID of an air pressure sensor mounted on each tire of a vehicle.

  Each tire mounted on a vehicle may drop in air pressure during traveling, and in recent years, many vehicles are equipped with TPMS (Direct Tire Pressure Alarm System) to detect this in real time. .

  TPMS is installed inside each tire, detects the air pressure of the tire, transmits the detected air pressure signal, and is installed inside the vehicle and receives the air pressure signal transmitted from the air pressure transmitter and receives it And an air pressure detecting device that outputs an alarm signal by a lamp or a buzzer sound when it is determined that an abnormality has occurred in the air pressure of each tire based on the air pressure signal.

  In such a TPMS, it is necessary to specify the front and rear, left and right attachment positions of each tire and output an alarm signal. Therefore, an ID is set for a pneumatic transmitter attached to each tire, and this ID is added to the pneumatic pressure. Send a signal. Then, the air pressure detecting device identifies which position of the tire has an abnormal air pressure based on the received air pressure signal and ID and outputs an alarm signal.

  Here, since the mounting position of each tire may be changed by the rotation of the tire performed at the time of vehicle inspection, etc., in such a case, the ID of the air pressure sensor mounted on each tire must be re-registered. Don't be.

  As a conventional example of a method for performing such registration, for example, a method described in Japanese Patent Laid-Open No. 2002-368116 (Patent Document 1) is known.

FIG. 4 is an explanatory diagram schematically showing a configuration of an ID registration device for a pneumatic sensor disclosed in Patent Document 1. As shown in FIG. As shown in the figure, in the ID registration device of the pneumatic sensor described in Patent Document 1, a commander 105 is connected to a receiver 104 mounted in a vehicle 101 using a cable 106, and the commander 105 is It arrange | positions in the vicinity of the pneumatic transmitter 103 mounted in each tire 102, performs communication between the commander 105 and the pneumatic transmitter 103, and registers the ID of each pneumatic transmitter 103 in the receiver 104. The method is adopted.
JP 2003-276410 A

  However, in the ID registration method described in Patent Document 1 described above, it is necessary to prepare the commander 105 in order to register the ID, and it is also necessary to connect the receiver 104 and the commander 105 with the cable 106. Therefore, there is a disadvantage that the cost is increased and the commander 105 which is not normally used is used, so that the operation is troublesome.

  The present invention has been made to solve such a conventional problem, and its object is to register the ID of a pneumatic transmitter mounted on each tire in a receiver with a simple operation. An object of the present invention is to provide a tire pressure sensor ID registration apparatus and method.

In order to achieve the above object, according to the first aspect of the present invention, an ID for identifying each air pressure sensor mounted at a position excluding a valve cap inside two or more tires of the vehicle is mounted on the vehicle. In an ID registration device for a tire pressure sensor to be registered in the air pressure detection device, a wireless tag provided on a valve cap of a tire on which the air pressure sensor is mounted and in which the same ID data as the air pressure sensor is written, and mounted on the vehicle When the wireless tag is placed in close proximity, the ID receiving means for receiving the ID written in the wireless tag, the ID received by the ID receiving means, and the data indicating the mounting position are associated with each other. And registering means for registering in the air pressure detecting device.

The invention described in claim 2 is characterized in that the ID receiving means is an immobilizer mounted on a vehicle.

According to a third aspect of the present invention, there is provided a tire for registering an ID for identifying each air pressure sensor mounted at a position excluding a valve cap in two or more tires of a vehicle in an air pressure detecting device mounted on the vehicle. in the ID registration method of the air pressure sensor, the valve cap to be mounted on a tire, fitted with a wireless tag writing the same ID and the air pressure sensor mounted in the tire, said valve cap detached from the tire, the vehicle This ID is read when approaching the ID receiving means provided on the tire, and when the tire mounting position is designated, the tire pressure detecting device associates the tire mounting position with the ID. It is characterized by registering.

In the inventions of claims 1 and 3, the same ID as the ID of the air pressure sensor mounted on each tire is written on a wireless tag provided on a removable member that can be attached to and detached from the tire, and the ID of the air pressure sensor is written. At the time of registration, the removable member is read by an ID receiving means provided in the vehicle, and the read ID is registered in the air pressure detection device. Therefore, the operator can register the ID of the air pressure sensor mounted on each tire by a very simple operation of removing the detachable member from the tire and arranging it near the ID receiving means to perform the ID reading operation. As a result, the ID registration work can be simplified.

In the invention of claim 2 , since the immobilizer mounted on the vehicle is used as the ID receiving means, it is not necessary to provide a separate receiving device, and the configuration can be simplified.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an ID registration device for a tire pressure sensor according to an embodiment of the present invention. As shown in the figure, this ID registration device is mounted on each tire of a vehicle, detects the air pressure of the tire and transmits a detected air pressure signal, and is mounted on each tire. A TPMS receiver (air pressure detecting device) 2 for receiving an air pressure signal transmitted from the transmitter 1 and outputting an alarm signal by a buzzer, a lamp or the like when an abnormality in air pressure is detected, and the TPMS receiver 2 And an immobilizer unit (ID receiving means) 3 that can communicate with each other.

  FIG. 2 is an explanatory diagram schematically showing the arrangement of tires mounted on a vehicle. As shown in FIG. 2, the transmitter 1 is mounted on each of the four tires on the front, rear, and left and right.

  As shown in FIG. 1, the transmitter 1 has a tire valve 11 that is used when air is introduced into the tire, and a valve cap (detachable member) 12 that can be attached to and detached from the tire valve 11. It has. Each transmitter 1 mounted on each tire is set with a different ID, and a wireless tag 13 having the same ID as this ID is provided inside the valve cap 12.

  The immobilizer unit 3 is a device that is provided in the vicinity of the key cylinder of the vehicle, performs low-frequency communication with a transponder provided in the vehicle key, and permits the activation of the ignition when the identification ID is authenticated. , A loop antenna 31, a low frequency (LF) communication unit 32, a control unit 33, and an EEPROM 34. Further, when the valve cap 12 is disposed in the vicinity of the loop antenna 31, the ID of the wireless tag 13 provided in the valve cap 12 is read.

  The TPMS receiver 2 includes an antenna 21 and a radio reception unit 22 that receive a detection signal transmitted from the transmitter 1, a control unit 23, an EEPROM 24, and an ID registration switch 25, and the immobilizer unit 3 It is connected by a harness or the like, and data multiplex communication is possible.

  The control unit 23 associates the mounting position of each transmitter 1 with the ID based on an input operation using the ID registration switch 25 (described later) and data transmitted from the immobilizer unit 3 through multiplex communication. , Processing to be saved in the EEPROM 24 is performed.

  Next, an ID registration procedure of the tire pressure sensor ID registration apparatus according to the present embodiment configured as described above will be described with reference to a flowchart shown in FIG.

  First, the control unit 23 of the TPMS receiver 2 determines whether or not the ID registration switch 25 has been pressed for a long time (for example, 2 seconds or longer) (step ST1). YES), the ID registration waiting state of the transmitter 1 mounted on the right front tire is set (step ST2). In this state, the operator removes the valve cap 12 attached to the right front tire from the tire valve 11 and moves to the vicinity of the loop antenna 31 of the immobilizer unit 3.

  Then, the ID written in the wireless tag 13 provided in the valve cap 12 is read by the low frequency communication unit 32, and the read ID data is transmitted to the TPMS receiver 2 by multiplex communication. As a result, the control unit 23 of the TPMS receiver 2 can receive the ID of the transmitter 1 provided in the right front tire and stores the tire position and the ID in the EEPROM 24 in association with each other. At this time, the operator is notified by a buzzer sound that ID registration for the right front tire has been completed (step ST3).

  Next, when the operator presses the ID registration switch 25 for a short time (for example, 1 second or less) (YES in step ST4), the ID registration waiting state of the transmitter 1 mounted on the right rear tire is set. (Step ST5). In this state, the operator removes the valve cap 12 attached to the right rear tire from the tire valve 11 and moves to the vicinity of the loop antenna 31 of the immobilizer unit 3.

  Then, the ID written in the wireless tag 13 provided in the valve cap 12 is read by the low frequency communication unit 32, and the read ID data is transmitted to the TPMS receiver 2 by multiplex communication. As a result, the control unit 23 of the TPMS receiver 2 can receive the ID of the transmitter 1 provided in the right rear tire, and stores the tire position and the ID in the EEPROM 24 in association with each other. At this time, the operator is notified by a buzzer sound that ID registration for the right rear tire has been completed (step ST6).

  In step ST4, when the ID registration switch 25 is pressed for 1 second or longer and reaches 2 seconds (YES in step ST16), the subsequent ID registration is stopped.

  Further, when the operator depresses the ID registration switch 25 for a short time (YES in step ST7), the ID registration waiting state of the transmitter 1 mounted on the left rear tire is set (step ST8). In this state, the operator removes the valve cap 12 attached to the left rear tire from the tire valve 11 and moves to the vicinity of the loop antenna 31 of the immobilizer unit 3.

  Then, the ID written in the wireless tag 13 provided in the valve cap 12 is read by the low frequency communication unit 32, and the read ID data is transmitted to the TPMS receiver 2 by multiplex communication. As a result, the control unit 23 of the TPMS receiver 2 can receive the ID of the transmitter 1 provided in the left rear tire, and stores the tire position and the ID in the EEPROM 24 in association with each other. At this time, the operator is notified by a buzzer sound that ID registration for the left rear tire has been completed (step ST9).

  In step ST7, when the ID registration switch 25 is pressed for 1 second or longer and reaches 2 seconds (YES in step ST15), the subsequent ID registration is stopped.

  Thereafter, when the operator presses the ID registration switch 25 for a short time (YES in step ST10), the ID registration waiting state of the transmitter 1 mounted on the front left tire is set (step ST11). In this state, the operator removes the valve cap 12 attached to the front left tire from the tire valve 11 and moves to the vicinity of the loop antenna 31 of the immobilizer unit 3.

  Then, the ID written in the wireless tag 13 provided in the valve cap 12 is read by the low frequency communication unit 32, and the read ID data is transmitted to the TPMS receiver 2 by multiplex communication. As a result, the control unit 23 of the TPMS receiver 2 can receive the ID of the transmitter 1 provided in the front left tire, and stores the tire position and the ID in the EEPROM 24 in association with each other. At this time, the operator is notified of the ID registration for the left front tire by a buzzer sound or the like (step ST12).

  In step ST10, when the ID registration switch 25 is pressed for 1 second or longer and reaches 2 seconds (YES in step ST14), the subsequent ID registration is stopped.

  When the ID registration of all four transmitters 1 is completed and the ID registration switch 25 is long pressed by the operator (YES in step ST13), the ID of each transmitter 1 in the TPMS receiver 2 is determined. End registration.

  Thus, in the tire pressure sensor ID registration device according to the present embodiment, the wireless tag 13 in which the ID is written is provided on the tire valve cap 12, and the valve cap 12 is brought close to the loop antenna 31 of the immobilizer unit 3. Thus, the ID is read, and this ID is transmitted to the TPMS receiver 2 for registration. Therefore, ID registration can be performed with a simple operation without using a separate device such as a commander as in the prior art.

  Further, since the wireless tag 13 is arranged inside the valve cap 12 that is inevitably provided on the tire valve 11, there is no need to separately provide a detachable member that can be attached to and detached from the tire, and the configuration can be simplified. it can.

  Furthermore, since the immobilizer is used as the ID receiving means for reading the ID of the wireless tag 13 provided on the valve cap 12, it is not necessary to provide a separate receiving means, and the configuration can be simplified.

  The tire pressure sensor ID registration apparatus and method according to the present invention have been described based on the illustrated embodiment. However, the present invention is not limited to this, and the configuration of each part is an arbitrary function having the same function. It can be replaced with a configuration one.

  For example, in the above-described embodiment, an example in which the transmitter 1 for detecting air pressure is provided on all four tires mounted on the vehicle has been described, but the present invention is not limited to this. ID registration can be performed for at least two transmitters 1.

  In the above-described embodiment, the case where the valve cap 12 is used as the detachable member has been described as an example. However, the present invention is not limited to this, and the wireless tag 13 is provided on the other detachable member. A configuration is also possible.

  This is extremely useful for registering the ID of the transmitter mounted on each tire by a simple operation.

It is a block diagram which shows the structure of ID registration apparatus of the tire pressure sensor which concerns on one Embodiment of this invention. It is explanatory drawing which shows typically arrangement | positioning of the tire mounted in a vehicle. It is a flowchart which shows the ID registration procedure of the ID registration apparatus of the tire pressure sensor which concerns on one Embodiment of this invention. It is a block diagram which shows a prior art example.

Explanation of symbols

1 Transmitter (Pneumatic sensor)
2 TPMS receiver (pneumatic pressure detector)
3 Immobilizer unit (ID receiving means)
11 Tire valve 12 Valve cap (detachable member)
13 Radio tag 21 Antenna 22 Wireless receiver 23 Control unit (registration means)
24 EEPROM
25 ID registration switch 31 Loop antenna 32 Low frequency communication unit 33 Control unit 34 EEPROM
101 Vehicle 102 Tire 103 Pneumatic Transmitter 104 Receiver 105 Commander 106 Cable

Claims (3)

In an ID registration device for a tire air pressure sensor for registering an ID for identifying each air pressure sensor mounted at a position excluding a valve cap inside two or more tires of the vehicle in an air pressure detecting device mounted on the vehicle,
A wireless tag provided on a valve cap of a tire on which the air pressure sensor is mounted, in which the same ID data as the air pressure sensor is written,
An ID receiving means for receiving an ID written on the wireless tag when the wireless tag is mounted in the vehicle and disposed in proximity;
Registration means for registering the ID received by the ID receiving means and the data indicating the attachment position in the air pressure detection device in association with each other;
An ID registration device for a tire pressure sensor.   The tire pressure sensor ID registration device according to claim 1, wherein the ID receiving means is an immobilizer mounted on a vehicle. In an ID registration method for a tire air pressure sensor, an ID for identifying each air pressure sensor mounted at a position excluding a valve cap inside two or more tires of the vehicle is registered in an air pressure detecting device mounted on the vehicle.
Attach a wireless tag with the same ID as the air pressure sensor attached to the tire to the valve cap mounted on the tire,
When the valve cap removed from the tire comes close to an ID receiving means provided in the vehicle, the ID is read, and when the mounting position of the tire is designated, the air pressure detecting device And a tire pressure sensor ID registration method, wherein the tire attachment position and the ID are registered in association with each other.

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