JP2000194893A - Etc onboard device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ETC onboard device capable of monitoring data inside the onboard device and performing optional control even during communication with on-road machine. SOLUTION: This ETC onboard device 1A loaded on a vehicle for transmitting and receiving ETC data with the on-road device 2 is provided with an antenna part 18 and a transmission/reception part 17 for performing the communication with the on-road machine, a control processing part 11A for controlling the transmission/reception part and processing communication data with the on-road machine and an external interface part 19 for connecting arbitrarily operable external equipment 5 and the control processing part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle terminal device (hereinafter, simply referred to as "in-vehicle device") used in an ETC (automatic toll collection system for toll road tollgates), and in particular, it can be connected to any external device. The present invention relates to an on-board ETC device capable of monitoring data in the on-vehicle device and performing arbitrary control even during communication with a roadside device by providing an interface unit.

[0002]

2. Description of the Related Art Conventionally, an ETC system for avoiding vehicle congestion is well known, and transmits and receives data such as balance information and charging information (hereinafter referred to as “ETC data”) to and from a roadside machine. Various on-board ETC devices have been proposed.

FIG. 6 is a block diagram showing a schematic configuration of a conventional vehicle-mounted ETC device (hereinafter simply referred to as a vehicle-mounted device). In FIG. 6, reference numeral 1 denotes a vehicle-mounted device mounted on a vehicle; It is a road device that communicates with the Internet. Reference numeral 3 denotes an IC card storing ETC data, which is mounted on the vehicle-mounted device 1 when using ETC.

The vehicle-mounted device 1 is composed of the following elements 10-19. Reference numeral 10 denotes a power supply unit that supplies power to the entire vehicle-mounted device 1. Reference numeral 11 denotes a control processing unit including a microcomputer, which controls communication processing and performs ETC data processing and the like.

[0005] Reference numeral 12 denotes a security module unit (hereinafter, referred to as "SAM (Secure Applicat)" which performs security management processing for ETC in cooperation with the control processing unit 11.
ion Module))). The control processing unit 11 and the SAM 12 are configured by a CPU (not shown) in the vehicle-mounted device 1.

Reference numeral 13 denotes a human-machine interface unit (hereinafter, referred to as “HMI / F”) connected to the control processing unit 11, and 14 denotes an operation switch and a display connected to the HMI / F 13. The operation switches are arbitrarily operated by the user, and the display displays data and the like as needed. An alarm (not shown) or the like may be connected to the HMI / F 13.

Reference numeral 15 denotes an IC card interface unit connected to the control processing unit 11, to which the IC card 3 uniquely carried by the user is selectively connected when using the ETC.

Reference numeral 16 denotes a modulation / demodulation unit connected to the control processing unit 11, which performs modulation of transmission data and demodulation of reception data. Reference numeral 17 denotes a transmission / reception unit including an RF circuit connected to the modulation / demodulation unit 16. Reference numeral 18 denotes an antenna connected to the transmission / reception unit 17, and includes a transmission antenna for transmitting and receiving radio waves W to and from the roadside device 2, and a transmission antenna.

In the normal operation, the vehicle-mounted device 1 shown in FIG. 6 performs radio communication with the roadside device 2 on the tollgate side to enable automatic collection of toll road usage fees. Further, the IC card 3 is inserted in the IC card interface unit 15 in advance, and the unique ETC data is read from the IC card 3 into the control processing unit 11, and the user of the vehicle and the vehicle-mounted device 1 is specified. .

Therefore, the vehicle-mounted device 1 functions without being illegally used, and the antenna unit 18 communicates with the on-road unit 2 installed at the tollgate on the toll road. Thereby, the road usage fee of the vehicle is automatically collected and settled by wireless communication with the on-road unit 2.

At this time, the data signal transmitted from the road unit 2 is input from the reception antenna of the antenna unit 18, converted into a digital signal in the transmission / reception unit 17, and demodulated in the modulation / demodulation unit 16.

The received data converted and demodulated into a digital signal is subjected to retransmission processing and data error detection in a protocol processing section of the control processing section 11 to be converted into normal data, and then subjected to necessary processing. Is done.

[0013] Of these received data, data to be stored is transmitted through an IC card interface unit 15 to an IC.
It is stored in the card 3. Further, of the data stored in the IC card 3, data to be transmitted to the roadside device 2 is read from the IC card 3 by the control processing unit 11.

The data read from the IC card 3 is
The signal is modulated via the protocol processing unit in the control processing unit 11 and further modulated via the modulation / demodulation unit 16 and transmitted / received by the transmission / reception unit 17.
The signal is converted to an analog signal through the transmission antenna of the antenna unit 18 and transmitted to the on-road unit 2.

When the user operates the operation switch 14 while the vehicle is running, arbitrary data or commands can be input to the control processing unit 11 and necessary data can be displayed on the display unit 14. .

As shown in FIG. 6, the conventional vehicle-mounted device 1 has an IC card interface for data communication with the IC card 3 as an interface capable of communicating with the outside together with an operation switch and a display 14 installed in advance. Antenna unit 18 for wireless communication between the unit 15 and the road unit 2
And

Therefore, when monitoring the data in the control processing unit 11, it is necessary to display the data on the display unit 14 mounted on the vehicle-mounted device 1 by using a specific command based on, for example, a wireless communication protocol for ETC. There is,
During normal wireless communication, since the antenna unit 18 is in use, it is difficult to monitor data.

Further, even if the IC card interface unit 15 is used,
Is managed by the SAM 12, so it is difficult to control it from outside. in this way,
It is very difficult to connect an external device to the conventional vehicle-mounted device 1, and it is possible only under specific conditions even when wireless is used.

[0019]

As described above, the conventional ETC on-vehicle device does not include an interface unit that can be connected to an arbitrary external device. There has been a problem that data cannot be arbitrarily monitored and a command cannot be arbitrarily input to the vehicle-mounted device 1.

The present invention has been made in order to solve the above-described problems. By providing an interface unit that can be connected to an external device, the data in the on-vehicle device can be obtained even during communication with a road device. It is an object of the present invention to obtain an ETC vehicle-mounted device capable of monitoring the vehicle and performing arbitrary control.

[0021]

An ETC on-vehicle device according to a first aspect of the present invention is mounted on a vehicle and communicates with a road-side device by means of an electronic control unit.
An ETC on-vehicle device for transmitting and receiving TC data, comprising: an antenna unit and a transmission / reception unit for communicating with a roadside device; and a control process for controlling the transmission / reception unit and processing communication data with the roadside device. And an external interface unit for connecting an external device arbitrarily operable and the control processing unit.

According to a second aspect of the present invention, there is provided the on-board ETC device according to the first aspect, wherein:
It has a plurality of pins for bidirectional communication.

According to a third aspect of the present invention, in the vehicle-mounted ETC device according to the second aspect, the external interface unit includes:
It is composed of 10-pin RS-232C terminals.

According to a fourth aspect of the present invention, in the vehicle-mounted ETC device according to any one of the first to third aspects, the external device connected to the control processing unit is the same as the predetermined processing unit. It has a communication processing unit based on a communication protocol.

According to a fifth aspect of the present invention, in the on-vehicle ETC device according to the fourth aspect, the external device is constituted by an audio output device for notifying data in the control processing unit and transmitted from the control processing unit. The data sound processing is performed according to the command.

According to a sixth aspect of the present invention, in the on-vehicle ETC device according to the fourth aspect, the external device is constituted by a printer for printing data in the control processing unit, and responds to a command transmitted from the control processing unit. To print data.

According to a seventh aspect of the present invention, in the on-board ETC device according to the fourth aspect, the external device is constituted by a remote control device for controlling the control processing unit, and transmits a command for controlling the control processing unit. What to send.

[0028] Further, in the ETC on-vehicle device according to claim 8 of the present invention, in claim 4, the external device is constituted by a data monitoring monitor device for displaying data in the control processing unit. And transmits the command address, and displays data transmitted from the control processing unit in response to the command address.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing Embodiment 1 of the present invention.
1A and 11A correspond to the vehicle-mounted device 1 and the control processing unit 11 described above (see FIG. 6), and the same components as those described above are denoted by the same reference numerals and will not be described in detail.

Reference numeral 5 denotes an external device connected to the vehicle-mounted device 1A.
It can be constituted by a printer, a remote control device, a monitor device, and the like.

Reference numeral 19 denotes an external interface unit provided in the vehicle-mounted device 1A and connected to the control processing unit 11A. When the external device 5 is connected, the external interface unit 5 controls the external device 5 to operate.
Connect to 1A. The external interface unit 19 has a plurality of pins for bidirectional communication, and is configured by, for example, a 10-pin RS-232C terminal.

FIG. 2 is a block diagram showing the vehicle-mounted device 1A and the external device 5 in FIG. In FIG. 2, reference numeral 19A denotes an RS-2 constituting an external interface unit in the vehicle-mounted device 1A.
32C terminal. Reference numeral 100 denotes a CPU in the vehicle-mounted device 1A, which constitutes the control processing unit 11A and the SAM 12.

A CPU 50 in the external device 5 includes a communication processing unit for communicating with the control processing unit 11A in the vehicle-mounted device 1A. The communication processing unit in the CPU 50 has the same predetermined communication protocol as the control processing unit 11A.

Reference numeral 51 denotes an RS-232C terminal which constitutes an interface unit in the external device 5;
Connected to S-232C terminal (external interface unit) 19A. 52 is an RS-232C terminal 19A and 51
The external device 5 is a common power supply terminal 5
Power is supplied from the on-vehicle device 1A via the communication line 2.

Next, referring to the explanatory diagram of FIG.
A communication operation with an external device according to the first embodiment of the present invention shown in FIG. 2 will be described. Fig. 3 shows the on-board unit 1A
4 shows a communication process between the two when an audio output device (external device) 5A is connected.

In this case, the external device 5 is an audio output device 5 for notifying data in the control processing unit 11A in the vehicle-mounted device 1A.
A, and the audio output device 5A is connected via the RS-232C terminals 19A and 51 (see FIG. 2).

In FIG. 3, C5A is an audio output device 5A.
Is a device code transmitted to the vehicle-mounted device 1A, and S1 is a connected device confirmation step executed by the vehicle-mounted device 1A in response to the device code C5A.

CL is a device initialization code transmitted from the vehicle-mounted device 1A to the voice output device 5A, S2 is an initialization step executed by the voice output device 5A in response to the device initialization code CL, and M1 is a vehicle-mounted device. Device 1A to audio output device 5A
Is a command processing step executed by the audio output device 5A in response to the command M1.

R5 is a reception confirmation signal transmitted from the audio output device 5A to the vehicle-mounted device 1A, and indicates whether or not the operation of receiving the command M1 is good. The vehicle-mounted device 1A transmits the command M1 again when the reception confirmation signal R5 indicates the reception failure.

First, the RS-232C terminal 1 of the vehicle-mounted device 1A
When the RS-232C terminal 51 of the audio output device 5A is connected to 9A and the vehicle-mounted device 1A is connected to the audio output device 5A,
The audio output device 5A is supplied with power from the vehicle-mounted device 1A via the common power supply terminal 52. Thereby, the audio output device 5A
Detects that it is connected to the vehicle-mounted device 1A.

Subsequently, the audio output device 5A has its own predetermined ID code, that is, the device code C5A.
Is transmitted to the vehicle-mounted device 1A. The vehicle-mounted device 1A that has received the device code C5A confirms that the connected device is the audio output device 5A (step S1), and transmits the device initialization code CL to the audio output device 5A.

Thus, the audio output device 5A performs an initialization process according to the device initialization code CL (step S2). The vehicle-mounted device 1A and the audio output device 5A recognize that they are connected to each other by transmitting and receiving the device code C5A and the device initialization code CL.

The master-slave relationship between the two communications after connection recognition is determined by the model of the external device 5 connected to the vehicle-mounted device 1A. Here, the audio output device 5A is connected to the vehicle-mounted device 1A, and the vehicle-mounted device 1A operates as a master.

That is, after transmitting the device initialization code CL to the voice output device 5A, the vehicle-mounted device 1A transmits a predetermined command M1 to the voice output device 5A at a predetermined timing that requires voice output.

On the other hand, the audio data to be output by the audio output device 5A is stored in the ROM in the audio output device 5A, and the command M1 for audio output and the audio data are one-to-one.
Yes, it is.

When the command M1 is normally received from the vehicle-mounted device 1A, the voice output device 5A transmits a reception confirmation signal R5 indicating reception OK to the vehicle-mounted device 1A.
If No. 1 cannot be received normally, a reception confirmation signal R5 indicating reception NG is transmitted. Also, the audio output device 5A
Executes the command processing after receiving the command M1 normally (step S3), and output the voice corresponding to the command M1.

As described above, by providing the external interface section 19 in the vehicle-mounted device 1A, the vehicle-mounted device 1A and the
Even in the state where communication is being performed with the device, the data in the vehicle-mounted device 1A can be monitored as audio output.

Further, by using a general-purpose external interface unit 19 such as an RS-232C terminal 19A,
In addition to the audio output device 5A, other external devices 5
A can be connected.

Therefore, by connecting an optional external device 5, the wireless performance of the vehicle-mounted device 1A can be measured and the vehicle-mounted device 1A can be measured.
Operation monitor and the external device 5 from the vehicle-mounted device 1A
Can be controlled.

Embodiment 2 In the first embodiment, a 10-pin RS
Although the −232C terminal 19A is used, other interfaces may be used as long as bidirectional communication is possible and a general-purpose interface is used.

Embodiment 3 FIG. In the first embodiment, the audio output device 5A is connected to the external interface unit 19 of the vehicle-mounted device 1A, but a printer (not shown) is connected to print data in the control processing unit 11A of the vehicle-mounted device 1A. May be.

Embodiment 4 FIG. In the first embodiment, the audio output device 5A is connected to the external interface unit 19 of the vehicle-mounted device 1A.
A remote control device for controlling A may be connected.

Hereinafter, a fourth embodiment of the present invention in which a remote control device is connected to the vehicle-mounted device 1A will be described with reference to the drawings. FIG.
Is an explanatory diagram showing a communication operation with an external device according to Embodiment 4 of the present invention, and shows a communication process between the remote control device 5B when the remote control device 5B is connected to the vehicle-mounted device 1A.

In FIG. 4, 1A, CL, S1 and S
2 is the same as that described above (see FIG. 3), and will not be described in detail here. The overall configuration of the vehicle-mounted device 1A and its surroundings is as shown in FIG.

In this case, the remote control device 5B is connected to the vehicle-mounted device 1
A is configured to control the control processing unit 11A in A,
It operates as a master for the vehicle-mounted device 1A. C5B is a device code transmitted from the remote control device 5B to the vehicle-mounted device 1A, M5 is a command transmitted from the remote control device 5B to the vehicle-mounted device 1A, and S4 is a response to the command M5.
R1 is the command processing step executed by the vehicle-mounted device 1A
Is a reception acknowledgment signal transmitted from the remote controller 5B to the remote controller 5B.

First, when the remote control device 5B is connected to the on-vehicle device 1A, the remote control device 5B receives a predetermined device code C5.
B to the vehicle-mounted device 1A, and the vehicle-mounted device 1A
5B confirms the remote control device 5B (step S5).
1) Transmit the device initialization code CL. This allows
The vehicle-mounted device 1A and the remote control device 5B recognize that they are connected to each other.

The remote control device 5B has a device initialization code C
Subsequent to the initialization processing according to L (step S2), a desired command M5 is transmitted to the vehicle-mounted device 1A. In response to this, the vehicle-mounted device 1A executes a desired command process (step S4), and transmits a reception confirmation signal R1 to the remote operation device 5B.

At this time, when the communication operation test and monitoring of the vehicle-mounted device 1A after manufacture are performed by the command M5 from the remote control device 5B, for example, based on the wireless examination standards of the Telecom Engineering Center (TELEC). An examination can be conducted promptly.

In general, in the examination of the wireless communication function of the vehicle-mounted device 1A based on the TELEC, a test of the radio wave transmitted by the vehicle-mounted device 1A is performed such as a frequency deviation, an occupied frequency bandwidth, and an antenna power deviation.

Therefore, as shown in FIG. 4, a remote control device 5B is connected to the external interface unit 5 of the vehicle-mounted device 1A, and a specific command M5 is transmitted to the vehicle-mounted device 1A, whereby a desired radio wave is transmitted from the vehicle-mounted device 1A. By transmitting, wireless examination can be performed smoothly.

Embodiment 5 In the fourth embodiment, the remote controller 5B is connected to the external interface unit 19 of the vehicle-mounted device 1A.
A monitoring device for data monitoring that displays data in the data may be connected.

Hereinafter, a fifth embodiment of the present invention in which a monitoring device is connected to the on-vehicle device 1A will be described with reference to the drawings. FIG. 5 is an explanatory diagram showing a communication operation with an external device according to a fifth embodiment of the present invention, and shows a communication process between the two when the monitor device 5C is connected to the vehicle-mounted device 1A.

In FIG. 5, 1A, CL, S1 and S
2 is the same as that described above (see FIG. 4), and will not be described in detail here. In this case, the monitor device 5C includes a display unit (not shown) for monitoring and displaying the data in the control processing unit 11A, and operates as a master for the vehicle-mounted device 1A.

C5C is a device code transmitted from the monitor device 5C to the vehicle-mounted device 1A, MA is a command address transmitted from the monitor device 5C to the vehicle-mounted device 1A, and S5 is executed by the vehicle-mounted device 1A in response to the command address MA. This is a command processing step.

D is data transmitted from the vehicle-mounted device 1A to the monitor device 5C by command processing in response to the command address MA, and S6 is a display step of the data D executed by the monitor device 5C.

First, the device code C5C is transmitted from the monitor device 5C to the vehicle-mounted device 1A, and after confirming the connected device (step S1), the device initialization code CL is transmitted from the vehicle-mounted device 1A. The monitor devices 5C recognize that they are connected to each other.

Following the initialization process (step S2), the monitor 5C transmits the desired command address MA to the vehicle-mounted device 1A. At this time, the command address MA is
It indicates an address in the control processing unit 11A which is arbitrarily set by the operation of the operator and in which the data D to be monitored exists.

The vehicle-mounted device 1 that has received the command address MA
The control processing unit 11A in A executes command processing (step S5) and transmits data D specified by the command address MA.

As a result, the monitor device 5C causes the display means to display the desired data D in the control processing section 11A (step S6). As described above, by connecting the monitor device 5C to the vehicle-mounted device 1A, data can be easily monitored.

[0070]

As described above, according to the first aspect of the present invention, there is provided an ETC on-vehicle device which is mounted on a vehicle and transmits and receives ETC data to and from a road device, and communicates with the road device. An antenna unit for transmitting and receiving, a control processing unit for controlling the transmitting and receiving unit and processing communication data between the roadside device, and an arbitrarily operable external device for connecting the control processing unit to the control processing unit. Since an external interface unit is provided, an ETC on-vehicle device capable of monitoring data in the on-vehicle device and performing arbitrary control even during communication with a roadside device is obtained.

According to a second aspect of the present invention, in the first aspect, the external interface unit has a plurality of pins for bidirectional communication, so that the external interface unit has a plurality of pins even when communicating with a road machine. There is an effect that an ETC on-vehicle device capable of monitoring data and performing arbitrary control can be obtained.

According to a third aspect of the present invention, in the second aspect, the external interface unit has a 10-pin R
Since it is configured with the S-232C terminal, there is an effect that an ETC on-vehicle device capable of monitoring data in the on-vehicle device and performing arbitrary control even during communication with the on-road device is obtained.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the external device connected to the control processing unit is configured to use the same predetermined communication protocol as that of the control processing unit. Since the communication unit has a communication processing unit based thereon, there is an effect that an ETC on-vehicle device capable of monitoring data in the on-vehicle device and performing arbitrary control even during communication with the on-road device is obtained.

According to a fifth aspect of the present invention, in the fourth aspect, the external device is constituted by an audio output device for notifying data in the control processing unit, and responds to a command transmitted from the control processing unit. In this case, the data sound processing is performed, so that an ETC on-vehicle device capable of monitoring data in the on-vehicle device even during communication with the on-road device is obtained.

According to a sixth aspect of the present invention, in the fourth aspect, the external device is constituted by a printer that prints data in the control processing unit, and the external device transmits the data in response to a command transmitted from the control processing unit. Since the printing process is performed, an ETC on-vehicle device capable of monitoring data in the on-vehicle device even during communication with a roadside device is obtained.

According to a seventh aspect of the present invention, in the fourth aspect, the external device is constituted by a remote control device for controlling the control processing unit, and transmits a command for controlling the control processing unit. Therefore, there is an effect that an ETC vehicle-mounted device capable of monitoring data in the vehicle-mounted device and performing arbitrary control even during communication with a roadside device is obtained.

According to an eighth aspect of the present invention, in the fourth aspect, the external device is constituted by a data monitoring device for displaying data in the control processing unit, and the command processing unit issues a command address to the control processing unit. , And
Since the data transmitted from the control processing unit is displayed in response to the command address, the ETC on-board unit can monitor the data in the on-board unit and perform any control even during communication with the on-road unit. The effect 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 specifically showing an external interface unit according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a communication operation according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a communication operation according to a fourth embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a communication operation according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a conventional on-board ETC device.

[Explanation of symbols]

1A On-board device, 2 roadside device, 3 IC card, 5 external device, 5A audio output device, 5B remote control device, 5C
Monitor device, 11A control processing unit, 15 IC card interface unit, 17 transmitting / receiving unit, 18 antenna unit,
19 external interface unit, 19A, 51 RS-23
2C terminal, 50, 100 CPU, D data, M1, M
5 command, MA command address, S3 to S5
Command processing step, W radio wave.

Claims (8)

[Claims] 1. ETC between a vehicle and a road machine
An ETC on-vehicle device for transmitting and receiving data, comprising: an antenna unit and a transmitting / receiving unit for communicating with the roadside device; and controlling the transmitting / receiving unit and processing communication data between the roadside device. An on-board ETC device comprising: a control processing unit; and an external interface unit for connecting an external device arbitrarily operable and the control processing unit. 2. The on-board ETC device according to claim 1, wherein the external interface unit has a plurality of pins for bidirectional communication. 3. The on-board ETC device according to claim 2, wherein the external interface unit is configured by a 10-pin RS-232C terminal. 4. The apparatus according to claim 1, wherein the external device connected to the control processing unit has a communication processing unit based on the same predetermined communication protocol as the control processing unit. The onboard ETC device described in Crab. 5. The external device is configured by a sound output device that sounds data in the control processing unit, and performs a sound processing of the data in response to a command transmitted from the control processing unit. The ETC according to claim 4, wherein
Onboard equipment. 6. The apparatus according to claim 1, wherein the external device includes a printer that prints data in the control processing unit, and performs the data printing process in response to a command transmitted from the control processing unit. 4. The ETC vehicle-mounted device according to 4. 7. The ETC vehicle according to claim 4, wherein the external device includes a remote control device that controls the control processing unit, and transmits a command for controlling the control processing unit. vessel. 8. The external device includes a monitor device for monitoring data in the control processing unit for displaying data in the control processing unit. The external device transmits a command address to the control processing unit and responds to the command address. The vehicle-mounted ETC device according to claim 4, wherein data transmitted from the control processing unit is displayed.