JP2002230601A - On-vehicle equipment for etc - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle equipment for ETC(electronic toll collection) enhanced in anti-theft properties by calling a driver's attention for not forgetting to draw out an IC card when the drives leaves a vehicle with the IC card left inserted. SOLUTION: The on-vehicle equipment for ETC includes a communication circuit 11 and an antenna 12, for communicating with road equipment for the sending and receiving of information, an IC card I/F 13 for inserting the IC card 2 therein, and a CPU 10A for reading and writing security information or the like from and to the IC card 2 via the IC card I/F 13. The CPU 10A includes an IC card detection means for detecting that the IC card 2 is inserted, a power off detection means for detecting that the power of the vehicle is off, and a warning means for generating a warning signal E if the IC card 2 left behind is detected at the same time that the off state of the vehicle power is detected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-board terminal for automatic toll collection (hereinafter referred to as "ETC on-board unit") for communicating with on-road units on a toll road, and more particularly to a driver when the driver gets off the vehicle. The present invention relates to an in-vehicle ETC device which automatically alerts the user to forget to remove an IC card and improves security.

[0002]

2. Description of the Related Art In recent years, an ETC system for avoiding vehicle congestion by a toll collection procedure at a toll road has been well known. In this case, a vehicle using a toll road is provided with an on-board ETC device. Is installed.

That is, in this type of ETC system, radio communication is performed between an ETC road machine on the tollgate side and an on-board ETC device on the vehicle side to automatically receive a toll road usage fee. Is configured.

FIG. 4 is a block diagram showing a conventional vehicle-mounted device for ETC (hereinafter simply referred to as a vehicle-mounted device). In FIG.
It is a C card.

The vehicle-mounted device 1 has a CPU 10 composed of a microcomputer. The CPU 10 includes a communication circuit 11 for transmitting and receiving information to and from a road device (not shown), an antenna 12, and a detachable IC. An IC card I / F 13 to which the card 2 is attached, and a SAM (Secure A
application module) 14.

[0006] The CPU 10 reads and writes security information and the like from the IC card 2 via the IC card I / F 13 and the SAM 14. Further, the vehicle-mounted device 1 is provided with a vehicle-mounted device internal power supply 15 (internal battery) for supplying power to the CPU 10 and each circuit.

The vehicle-mounted device internal power supply 15 can be replaced by a power supply circuit connected to a vehicle-side power supply (battery) or a vehicle-side accessory power supply (not shown). In this case, the power supply circuit converts, for example, a battery voltage to a desired voltage for operating each circuit in the vehicle-mounted device 1.

Next, the operation of the conventional ETC on-board unit shown in FIG. 4 will be described. First, the driver mounts the IC card 2 in which self-information is stored in the vehicle-mounted device 1 and drives the vehicle.

When the vehicle reaches the toll booth, the antenna 12
, A data signal from the on-street machine at the tollgate is input. The received data signal is converted into a digital signal by the communication circuit 11 and then converted to a digital signal by the CPU 10 and the SAM 14.
And the data to be stored in the received data is stored in the IC card 2.

On the other hand, the IC card 2 stores data to be transmitted to a roadside device. The transmission data to the roadside device is read from the IC card 2 via the IC card I / F 13 and the SAM 14 under the control of the CPU 10,
It is transmitted from U10 to the on-road unit via the communication circuit 11 and the antenna 12.

As is well known, some ETC IC cards 2 mounted on the vehicle-mounted device 1 have a credit function. Therefore, when the driver leaves the vehicle, the IC card 2
To the user that it is necessary to remove the vehicle from the vehicle-mounted device 1.

However, at present, it is impossible to prevent the driver from forgetting to remove the IC card 2 when getting off the vehicle, even if the driver is warned.

[0013]

As described above, the conventional vehicle-mounted device for ETC only calls the driver's attention so as not to forget to remove the IC card 2 and does not use any alarm means or the like. There was a problem that it was impossible to prevent the card 2 from being forgotten to be removed, and the security was poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. If an IC card is mounted on a vehicle-mounted device when the driver leaves the vehicle, the driver is warned that he / she has forgotten to remove the IC card. An object of the present invention is to obtain an ETC on-vehicle device with improved security by calling attention.

[0015]

An ETC on-vehicle device according to a first aspect of the present invention is an ETC on-vehicle device mounted on a vehicle using a toll road, and transmits and receives information to and from a road device. And an antenna for reading and writing security information and the like between the IC card I / F on which the detachable IC card is mounted and the IC card via the IC card I / F In the vehicle-mounted device for ETC, the CPU comprises: an IC card detecting means for detecting a mounted state of the IC card; a power-off detecting means for detecting a power-off state of the vehicle; Alarm means for generating an alarm signal when the OFF state is detected at the same time.

According to a second aspect of the present invention, in the vehicle-mounted device for ETC according to the first aspect, the power-off detecting means detects a power-off state of the vehicle based on an accessory power supply voltage including an ignition switch voltage. Things.

According to a third aspect of the present invention, the vehicle-mounted ETC device according to the second aspect further includes a power supply circuit for supplying power to the CPU, and the power supply circuit supplies the power to the CPU based on a battery voltage from the vehicle-side power supply. And an accessory detection signal is generated based on the accessory power supply voltage, and the power off detection means detects a power off state of the vehicle based on the accessory detection signal.

According to a fourth aspect of the present invention, in the vehicle-mounted device for ETC according to any one of the first to third aspects, the CPU detects a driver's door open state detecting means for detecting an open state of the driver's door. The alarm means generates an alarm signal when the mounted state of the IC card, the power-off state of the vehicle, and the open state of the driver's door are simultaneously detected.

An ETC on-vehicle device according to a fifth aspect of the present invention is an ETC mounted on a vehicle using a toll road.
A communication circuit and an antenna for transmitting / receiving information to / from a roadside device, an IC card I / F on which a detachable IC card is mounted, and an IC via the IC card I / F. In an on-board ETC device having a CPU for reading and writing security information and the like from and to a card, the CPU includes an IC for detecting a mounted state of the IC card.
Card detection means, driver's door open detection means for detecting the driver's door open state, and alarm means for generating an alarm signal when the IC card installation state and the driver's door open state are detected. It is a thing.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of the present invention. The same components as those described above (see FIG. 4) are denoted by the same reference numerals, or are denoted by "A" after the reference numerals. The description is omitted.

In FIG. 1, the vehicle-mounted device 1A includes a CPU 10
A and each of the elements 11 to 15 described above. Reference numeral 3 denotes an accessory power supply, which supplies the accessory power supply voltage A to the CPU 10A.
Is being entered. Reference numeral 4 denotes an alarm device such as a sound generator connected to the vehicle-mounted device 1A, which is driven by an alarm signal E from the CPU 10A.

In this case, the IC card I / F 13
When the card 2 is inserted, the IC card detection signal C
A is to be input.

The CPU 10A is responsive to the IC card detection signal C to detect the mounted state of the IC card 2, the power-off detecting means for detecting the power-off state of the vehicle, and the mounted state of the IC card 2. And an alarm means for generating an alarm signal E when the power-off state of the vehicle is detected at the same time.

As shown in FIG. 1, the power-off detecting means in the CPU 10A detects the power-off state of the vehicle based on the accessory power supply voltage A including the ignition switch voltage.

Next, the operation according to the first embodiment of the present invention shown in FIG. 1 will be described. Now, it is assumed that the driver turns off the vehicle-side power while the IC card 2 is mounted on the vehicle-mounted device 1A.

At this time, as the accessory power supply voltage A,
An on / off signal linked to the on / off of a vehicle ignition switch (not shown) is input to the CPU 10A. That is, the accessory power supply voltage A indicating the power-off state of the vehicle and the IC card detection signal C indicating the mounted state of the IC card 2 are simultaneously input to the CPU 10A.

Therefore, the alarm means in the CPU 10A recognizes that there is a possibility of forgetting to remove the IC card 2 because the power supply of the vehicle is turned off by the driver while the IC card 2 is mounted. , And outputs an alarm signal E.

As a result, the alarm device 4 such as a sound generator is driven for a certain period of time to give a warning to the driver. Thereafter, when the driver notices the warning and removes the IC card 2 from the vehicle-mounted device 1A, the CPU 10A
Recognizes that the IC card 2 has been removed based on the IC card detection signal C, and turns off the generation of the alarm signal E.

As described above, when the ignition switch is turned off while the IC card 2 is mounted on the vehicle-mounted device 1A, a warning is automatically given to the driver by the alarm means in the CPU 10A. Forgetting to pull out can be reliably prevented.

Embodiment 2 FIG. In the first embodiment, the on-board unit internal power supply 15
However, a power supply circuit that operates in association with the battery voltage may be used.

FIG. 2 is a block diagram showing Embodiment 2 of the present invention in which a power supply circuit is provided in the vehicle-mounted device.
The same reference numerals are given to the same components as those described in (1), or "B" is appended to the reference numeral, and the detailed description is omitted.

In FIG. 2, the vehicle-mounted device 1B includes a CPU 10
B and each of the elements 11 to 14 described above. Reference numeral 5 denotes a vehicle-side power supply (battery) connected to the vehicle-mounted device 1B, and 16 denotes a power supply circuit in the vehicle-mounted device 1B.

The power supply circuit 16 receives an accessory power supply voltage A and a battery voltage B from the vehicle-side power supply 5. The power supply circuit 16 includes a CPU 10 B based on the battery voltage B from the vehicle-side power supply 5. Power is supplied to each circuit.

The power supply circuit 16 generates an accessory detection signal a which turns on and off in conjunction with the turning on and off of the vehicle ignition switch based on the accessory power supply voltage A, and inputs the signal to the CPU 10B.

Therefore, the power-off detecting means in the CPU 10B detects the power-off state of the vehicle based on the accessory detection signal a.

The vehicle-side power supply 5 can supply power to the vehicle-mounted device 1B regardless of the operation of the ignition switch. Thus, even when the ignition switch is turned off, the power supply circuit 16 can supply power to each circuit in the vehicle-mounted device 1B with the battery voltage B.

Next, the operation according to the second embodiment of the present invention shown in FIG. 2 will be described. Now, it is assumed that the driver turns off the ignition switch on the vehicle side while the IC card 2 is mounted on the vehicle-mounted device 1B.

At this time, the alarm means in the CPU 10B
Based on the IC card detection signal C and the accessory detection signal a, it recognizes that the ignition switch has been turned off in the mounted state of the IC card 2, and drives the alarm device 4 to give a warning to the driver as described above.

At this time, the vehicle-mounted device 1B is operated by the battery voltage B from the vehicle-side power supply 5 via the power supply circuit 16. Hereinafter, when the driver notices the warning and removes the IC card 2 from the vehicle-mounted device 1B, the CPU 10B turns off the warning signal E and turns off the generation of a warning sound and the like.

As described above, when the ignition switch is turned off while the IC card 2 is mounted on the vehicle-mounted device 1B, a warning is automatically given to the driver by the alarm means in the CPU 10B. Forgetting to pull out can be reliably prevented.

Embodiment 3 In the first embodiment,
In No. 2, the warning is issued when the ignition switch is turned off while the IC card 2 is mounted. However, the open state of the driver's seat door may be added to the condition.

FIG. 3 is a block diagram showing a third embodiment of the present invention in which the open state of the driver's seat door is added to conditions, and the same components as those described above (see FIG. 2) are denoted by the same reference numerals. , Or “C” after the reference numeral, and a detailed description is omitted.

In FIG. 3, the vehicle-mounted device 1C includes a CPU 10
C and the elements 11 to 16 described above. Reference numeral 6 denotes a driver's door opening / closing detector, which generates a driver's door opening / closing signal D indicating the opening / closing state of the driver's door, and outputs this signal to C in the vehicle-mounted device 1C.
Input to PU10C.

In this case, the CPU 10C includes driver's door open detection means for detecting the driver's door open state.
The alarm means in the PU 10C is for the mounting state of the IC card 2,
An alarm signal E is generated when the power-off state of the vehicle and the open state of the driver's seat door are simultaneously detected.

Next, the operation according to the third embodiment of the present invention shown in FIG. 3 will be described. Now, suppose that the ignition switch on the vehicle side is turned off, the driver's seat door is opened, and the vehicle gets off the vehicle with the IC card 2 mounted on the vehicle-mounted device 1C.

At this time, the alarm means in the CPU 10C
Based on the IC card detection signal C, the accessory detection signal a and the driver's door opening / closing signal D, it is recognized that the ignition switch is turned off and the driver's door is opened with the IC card 2 mounted.

Accordingly, the CPU 10C outputs the alarm signal E and drives the alarm device 4 to warn the driver of forgetting to remove the IC card 2 as described above.
Hereinafter, when the driver removes the IC card 2, the CPU
10C turns off the alarm signal E.

As described above, when the ignition switch is turned off and the driver's seat door is opened while the IC card 2 is mounted on the vehicle-mounted device 1B, a warning is automatically given to the driver by the alarm means in the CPU 10C. Since it is provided, forgetting to remove the IC card 2 can be reliably prevented.

Embodiment 4 In the third embodiment, in addition to the mounted state of the IC card 2, both the power-off state of the vehicle and the open state of the driver's seat door are set as the warning conditions, but only the open state of the driver's door is set as the warning condition. It may be.

In this case, the alarm means in the CPU 10C (see FIG. 3) outputs an alarm signal E when the open state of the driver's seat door is detected in the mounted state of the IC card 2 irrespective of the on / off operation of the ignition switch. Generate

As described above, when the driver's seat door is opened with the IC card 2 mounted, a warning is given to the driver, so that even when the driver gets off the vehicle with the vehicle powered on, the IC card can be used. Forgetting to pull out can be reliably prevented. In the first to fourth embodiments, the alarm device 4 is provided outside the vehicle-mounted device, but may be provided inside the vehicle-mounted device. In addition, the alarm device 4 may display not only a buzzer or sound but also blinking.

[0052]

As described above, according to the first aspect of the present invention, there is provided an on-board ETC device mounted on a vehicle using a toll road, for transmitting and receiving information to and from a road device. A communication circuit and an antenna; an IC card I / F on which a detachable IC card is mounted; and a CPU for reading and writing security information and the like between the IC card and the IC card via the IC card I / F. In the vehicle-mounted device for ETC, the CPU includes: an IC card detecting means for detecting an IC card mounting state; a power off detecting means for detecting a vehicle power OFF state; and an IC card mounting state and a vehicle power OFF state. Alarm means for generating an alarm signal when detected at the same time, so that if an IC card is mounted in the vehicle-mounted device when the driver leaves the vehicle, the driver is alerted to forget to remove the IC card. By call attention Te, the effect of the vehicle-mounted device for ETC with improved security can be obtained.

According to a second aspect of the present invention, in the first aspect, the power-off detecting means detects the power-off state of the vehicle based on the accessory power supply voltage including the ignition switch voltage. If an IC card is mounted on the vehicle-mounted device when the driver leaves the vehicle, the warning that the IC card is forgotten to be removed is warned to warn the driver, so that the vehicle-mounted device for ETC with improved security can be obtained. is there.

According to a third aspect of the present invention, in the second aspect, a power supply circuit for supplying power to the CPU is provided, and the power supply circuit is configured to output a C based on a battery voltage from a vehicle-side power supply.
The power supply to the PU is performed, an accessory detection signal is generated based on the accessory power supply voltage, and the power-off detection unit detects the power-off state of the vehicle based on the accessory detection signal. If the IC card is mounted on the vehicle-mounted device when you leave from, you will be warned that you have forgotten to remove the IC card.
There is an effect that a vehicle-mounted device for ETC with improved security is obtained.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the CPU comprises:
A driver's door opening detecting means for detecting a driver's door opening state is included. The alarm means outputs an alarm signal when an IC card mounting state, a vehicle power-off state, and a driver's door opening state are simultaneously detected. If an IC card is mounted on the vehicle-mounted device when the driver leaves the vehicle, the driver is warned that he / she has forgotten to remove the IC card and is warned to alert the driver. There is an effect that a vehicle-mounted device can be obtained.

An ETC on-vehicle device according to a fifth aspect of the present invention is an ETC mounted on a vehicle using a toll road.
A communication circuit and an antenna for transmitting / receiving information to / from a roadside device, an IC card I / F on which a detachable IC card is mounted, and an IC via the IC card I / F. In an on-board ETC device having a CPU for reading and writing security information and the like from and to a card, the CPU includes an IC for detecting a mounted state of the IC card.
Card detection means, driver's door open detection means for detecting the driver's door open state, and alarm means for generating an alarm signal when the IC card installation state and the driver's door open state are detected Therefore, if an IC card is mounted on the vehicle-mounted device when the driver leaves the vehicle, the driver is alerted to forgetting to remove the IC card, and is warned to pay attention.
There is an effect that a vehicle-mounted device for ETC with improved security is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a third embodiment of the present invention.

FIG. 4 is a block diagram showing a conventional vehicle-mounted device for ETC.

[Explanation of symbols]

1A-1C On-board unit (on-board unit for ETC), 2 IC card, 3 accessory power supply, 4 alarm device, 5 vehicle side power supply, 6 driver's door open / close detector, 10A-10C CP
U, 11 communication circuit, 12 antenna, 13 IC card I / F, 15 in-vehicle device internal power supply, 16 power supply circuit, A
Accessory power supply voltage, a accessory detection signal, B battery voltage, C IC card detection signal, D driver door open / close signal, E alarm signal.

Claims (5)

[Claims] 1. An E mounted on a vehicle using a toll road
An in-vehicle device for TC, a communication circuit and an antenna for transmitting and receiving information to and from a road device, and an IC card I / F on which a detachable IC card is mounted.
And a CPU that reads and writes security information and the like between the IC card and the IC card via the IC card I / F. IC card detecting means for detecting; power-off detecting means for detecting a power-off state of the vehicle; and alarm means for generating an alarm signal when the mounted state of the IC card and the power-off state of the vehicle are detected simultaneously. And a vehicle-mounted device for ETC. 2. The power-off detecting means, based on an accessory power supply voltage including an ignition switch voltage,
The vehicle-mounted device for ETC according to claim 1, wherein a power-off state of the vehicle is detected. 3. A power supply circuit for supplying power to the CPU, the power supply circuit supplying power to the CPU based on a battery voltage from a vehicle-side power supply, and an accessory detection signal based on the accessory power supply voltage. The vehicle-mounted ETC device according to claim 2, wherein the power-off detection unit detects a power-off state of the vehicle based on the accessory detection signal. 4. The CPU includes driver's door open detecting means for detecting a driver's door open state, and the alarm means includes an IC card mounted state, a vehicle power OFF state, and a driver's seat door. The vehicle-mounted device for ETC according to any one of claims 1 to 3, wherein the alarm signal is generated when the open states of the ETC are simultaneously detected. 5. An E mounted on a vehicle using a toll road
An in-vehicle device for TC, a communication circuit and an antenna for transmitting and receiving information to and from a road device, and an IC card I / F on which a detachable IC card is mounted
And a CPU that reads and writes security information and the like between the IC card and the IC card via the IC card I / F. IC card detecting means for detecting, driver's door opening detecting means for detecting an opening state of a driver's door, and generating an alarm signal when the IC card mounting state and the driver's door opening state are detected. A vehicle-mounted device for ETC, comprising: an alarm unit.