KR19980081327A - Automotive communication device - Google Patents

Abstract

Ensure safety against theft of on-vehicle communication devices.

The card reader 25 which reads the dark data stored in the card key 20, the communication unit 29 which communicates with a terrestrial communication apparatus, and the dark card read by the card reader 25. In the on-vehicle communication device including the engine control unit 40 which determines whether or not the data is appropriate and enables the engine to start when the data is appropriate, the dark data read by the card reader 25 is appropriate. Only when 40 judges, the communication unit 29 is configured to be operable.

Description

Automotive communication device

TECHNICAL FIELD This invention relates to the onboard communication apparatus provided with the communication unit which communicates with a terrestrial communication apparatus.

In recent years, there has been a need for mounting a communication device in a vehicle, such as a system for automatically charging a toll on a highway by using data communication between the ground and a vehicle. The system roughly transmits and stores entrance point data from the terrestrial communication device disposed at the entrance of the expressway to the on-vehicle communication device. When the vehicle reaches the exit of the highway, the entry point data is transmitted from the on-vehicle communication device of the vehicle. In this case, the toll is calculated and charged on the ground side (see Japanese Patent Application Laid-Open No. 8-7131).

By the way, the communication unit of the on-vehicle communication device is configured to be operable by the input of the main power of the vehicle. When the main power of the vehicle is turned on by any means, even if the vehicle is used by another vehicle, the on-vehicle communication device is similarly applied. It becomes usable. By the way, in recent years, the card key system which enables starting of an engine by a card key is developed (refer Unexamined-Japanese-Patent No. 7-180602). The card key system includes a card reader that reads the dark data stored in the card key, and an engine control unit that determines whether the dark data read by the card reader is appropriate and enables the engine to start when appropriate. In addition, the safety against theft of the vehicle is significantly improved as compared with the conventional key method.

The present invention has been made in view of this point, and an object of the present invention is to provide an on-vehicle communication apparatus which improves the safety against theft using a card key system.

1 is an external view of a front portion of a motorcycle equipped with the on-vehicle communication device of the present invention;

2 is a front view of a meter of a motorcycle;

3 is a side view of a meter of a motorcycle;

4 is a front view showing a card key;

5 is a perspective view showing the configuration of a card key and a card reader;

6 is a block diagram showing the configuration of the on-vehicle communication apparatus of the present invention;

7 is a conceptual diagram showing a positional relationship between a communication antenna and a hearth antenna;

8 is a flowchart showing the operation of the engine control unit;

9 is a flow chart showing a handle unlocking routine;

10 is a flowchart showing transmission and reception routines;

11 is a flowchart showing separate operations of the engine control unit.

<Description of the code | symbol about the principal part of drawing>

10: meter case 10a: insertion hole

20: card key 23: IC memory

25 card reader 29 communication unit

30: communication antenna 40: engine control unit

70: hearth antenna

In order to achieve the above object, the present invention provides a communication unit that communicates with a terrestrial communication device, a card reader that reads the dark data stored in the card key, and whether the dark data read by the card reader is appropriate. An on-vehicle communication device comprising an engine control unit for discriminating and enabling the engine to start when appropriate, wherein the communication unit is operable only when the engine control unit determines that the dark data read by the card reader is appropriate. have.

In such a configuration, the communication unit is not enabled when the dark data read by the card reader is not appropriate, and the on-vehicle communication device is not operated, thereby improving the safety against theft of the device.

By the way, a card having encryption data for enabling the communication unit to be stored is prepared separately from the card key, and if the encryption data read out from this card is appropriate, the communication unit is enabled to operate and theft of the on-board communication device In this case, a card reader dedicated to a communication device and a dark data verification means are required, which increases the size of the device and increases the cost. In addition to the card key, a card for the communication device is added. You must use it, and writing becomes worse. On the other hand, in the present invention, since the card to be used is good only with the card key, the card is easy to use, and the card for the communication device can be used as the card reader of the card key system, and the encryption data checking means can be used as the engine control unit. As a result, the size of the apparatus can be reduced and the cost can be reduced.

If a plurality of cancer data are stored in the card key, and one of the plurality of cancer data matches the cancer data stored in the engine control unit, the card data is judged to be appropriate. A plurality of vehicles and an on-vehicle communication apparatus mounted thereon can be operated with keys, and the convenience in the case of using a plurality of vehicles is improved.

Referring to Fig. 1, 1 is a frame of a motorcycle, which is a vehicle, and a steering head 1a is provided at the front end of the frame 1. The steering head la includes a pair of left and right front forks 3a and 3b supporting the front wheels 2, an upper bridge 4 connecting the upper ends of both front forks 3a and 3b, and an upper bridge 4 thereof. The steering wheel 6 which consists of the handle 5 etc. which are provided in the both ends of () is hold | maintained so that steering is possible, and between the steering head 1a and the screen 7a in front of it, the steering head 1a The meter case 10 supported by the support member 8 is provided. In addition, the screen 7a is formed integrally with the upper cowl 7 fixed to the frame 1.

2 and 3, the meter case 10 includes a speed meter 11 on the left side facing each other and a technometer 12 on the right side facing each other. The meter case 10 is provided so that the display surfaces of the two meters 11 and 12 face the passenger's line of sight, and water metering, heat resistance, and vibration resistance are required in order for a meter such as the speed meter 11 to ensure accurate operation. It has a structure excellent in so-called environmental resistance. Further, below the meter case 10, a pair of direction indicating indicators 13a and 13b disposed at both ends in the vehicle width direction, the neutral position indicator 13c and the headlight high beam indicator 13d therebetween. ) Is installed.

Then, a card insertion hole (hereinafter simply referred to as an insertion hole) for inserting the card key 20 to be described later into the space between the speed meter 11 and the tachometer 12 of the meter case 10 ( 10a) was established.

The insertion hole 100a is opened toward the occupant in the motorcycle, so that the card key 20 can be easily inserted and the inserted card key 20 can be easily observed, and the card key 20 can be forgotten. It is effective to prevent. If the color of the card key 20 is different from that of the meter case 10, the effect of preventing forgetting is further improved. In the rear end of the insertion hole l0a, a hole 10b for extracting thin water by the height direction dimension of the insertion hole l0a is formed along the bottom wall surface of the insertion hole l0a over the entire width. In this case, water such as rainwater penetrating into the insertion hole 110a is discharged out of the hole. In addition, the step 10c formed with respect to the upper wall surface of the insertion hole l0a at the same time as the formation of the hole 10b for taking out water is prevented from being omitted from the insertion hole l0a of the card key 20.

In the insertion hole l0a, the main switch 41 of the engine control unit 40 shown in FIG. 6 is provided. When the card key 20 is inserted into the insertion hole l0a, the card key 20 is inserted. The main switch 41 is pressed by this, and the power supply of the engine control unit 40 enters. In addition, when the engine control unit 40 which turned on the power judges that the inserted card key 20 is appropriate, it operates as follows, and the handle lock by the handle lock mechanism l4 (refer FIG. 6) is released. At the same time, power is supplied to various devices of the engine control system such as the ignition coil 43 (see FIG. 6) connected to the engine control unit 40, so that the engine can be started. In addition, although the engine control unit 40 is provided in the predetermined position of the motorcycle, such as the lower part of the meter case 10, you may enlarge the meter case 10 and may incorporate it in the meter case 10. As shown in FIG.

4 and 5, the card key 20 is provided with a card case 20a constituting its outline. A cutout (notch) 20b is formed in one side of the rear end of the card case 20a in the insertion direction, and a conventional key 21 used for opening and closing of a helmet holder can be inserted freely. Can be. And in the card box 20a, the member 22a, 22b which supports the insertion part 21a is provided so that the inserted key 21 may not fall out. Notches 20c and 20d are formed near the rear end of each long side of the card case 20a. When the card key 20 is inserted into the insertion hole 100a, both notches 20c and 20d are inserted holes. The card key 20 is positioned in accordance with positioning means (not shown) in (10a). The positioning means includes a release mechanism (not shown), and the card key 20 can be attached and detached.

The card key 20 is an IC memory 23 for storing data such as memorization data, and a communication coil used for reading data from the IC memory 23 and writing data to the IC memory 23 ( 24) is a so-called IC card. The card reader 25 which reads the data of the IC memory 23 of this card key 20 and sends it to the CPU (refer FIG. 6) of the engine control unit 40 is lower than the bottom wall surface of the insertion hole l0a. Installed in Therefore, when the card key 20 is inserted into the insertion hole 110a, the card key 20 and the card reader 25 face each other in a state of approaching through the bottom wall surface of the insertion hole 110a.

The card reader 25 is provided with the communication coil 26 which exchanges data by the transmission and reception of the electromagnetic wave between the communication coil 23 with which the card key 20 is equipped, and is a non-contact state from a CPU. Is written into the IC memory 23 and the data of the IC memory 23 is read.

In addition, the card key 20 and the card reader 25 are provided with power generation coils 27 and 28 which are positioned to face each other in a non-contact manner when the card key 20 is inserted into the insertion hole 110a. The card key 20 is made to operate with the electric current which generate | occur | produced in the electric power generation coil 27 which received the electromagnetic wave from the electric power generation coil 28 of (25). With such a configuration, the card reader 25 can be built in the meter case 10 so as not to fade to the outside air, and the reliability of data reading and writing operations is maintained for a long time.

Referring to Fig. 6, the engine control unit 40 includes a RAM in which data such as encryption data that the card reader 25 reads from the IC memory 23 of the card key 20, and the read encryption data are stored. A ROM (for example, EEPROM) is stored in which cancer data used for the determination of properness is stored. In addition to the cancer data, the ROM stores characteristic data such as an odometer and a tripmeter. In addition to the card reader 25, the CPU of the engine control unit 40 includes an ignition coil 43, an oil pump solenoid 44, a pair of carburetor solenoids 45, an exhaust motor servo motor 46, Throttle sensor 47, Crank angle pulser 49, Oil level switch 50, Neutral switch 51, Side stand provided outside the diameter of AC generator 48 installed in the crankshaft end (not shown) Automatic detection of the on detection switch 53, the kill switch 54, the vehicle speed detection sensor 55, the summer sensor 56, etc., which emits an on signal when the switch 52 and the handle lock mechanism 14 are released. It is provided in the predetermined position of a motorcycle, and the thing used for engine control is connected. In addition, each load other than the engine control system and the communication unit 29 is connected to a switch relay 57 which is closed when the main switch 41 is turned on, and power is supplied to the engine control unit 40 at the same time. The power is supplied to the load.

In order to correspond to the motorcycle of such a structure to the automatic charging system of a highway toll, the object identification data etc. which identify an object, such as a vehicle or its owner, by communication with the ground communication apparatus of the automatic charging system, etc. The on-board communication device for transmitting data to the terrestrial communication device and receiving necessary data from the terrestrial communication device was mounted. In this embodiment, the dark data stored in the IC memory 23 of the card key 20 is used as the object identification data. However, the identification data is set separately from this and stored in the IC memory 23. It may be used and used.

The on-vehicle communication device is connected to the communication unit 29 and the communication unit 29 that receive data to be transmitted to the terrestrial communication device from the CPU of the engine control unit 40 and send data from the terrestrial communication device to the CPU. And a plate-shaped communication antenna 30 which transmits a signal from the communication unit 29 as a radio wave and transmits a signal obtained by receiving the radio wave to the communication unit 29, and the meter case 10 is provided. Installed inside to secure environmental resistance. As shown in Fig. 3, the meter case 10 is provided such that its upper surface 10d faces the front inclination 45 degrees upward, and a communication antenna 30 is provided along its upper surface 10d. Since the below-mentioned on-air antenna (refer FIG. 7) 70 of the terrestrial communication device which communicates with the communication antenna 30 is installed in the position higher than a vehicle generally by the support | pillar 71 etc., it is a communication antenna as mentioned above. If 30 is installed along the upper surface 10d of the meter case 10, when the vehicle is traveling toward the hearth antenna 70, the hearth antenna 70 is located in the normal direction of the reception surface of the communication antenna 30. This makes it possible to communicate with a strong transmission / reception strength, making it less likely to be affected by jamming radio waves, thereby improving communication reliability.

In addition, the on-vehicle communication apparatus is used in an automatic billing system, and there is a fear that the highway toll caused by theft is automatically charged to the stolen person. Therefore, attention has been paid to the card key system having high safety against theft of the vehicle, and the system is used to secure the safety of the on-vehicle communication apparatus. That is, the power supply of the communication unit 29 is turned on and operable only when the dark data read out from the IC memory 23 by the card reader 25 matches the dark data stored in the ROM, so that the on-vehicle communication device can be operated. To do so. In this way, since the on-board communication device cannot be operated without the card key 20, theft of the on-board communication device can be prevented in advance.

In addition, since the card key system is used to ensure the safety of not only the vehicle but also the on-vehicle communication device, the engine can be started and the on-vehicle communication device can be operated using only one card key. At the same time, the complexity of key management is prevented, and the effect of preventing key forgetting is improved. In addition, since it is not necessary to separately install a card reader or a dark data verification means exclusively for the on-vehicle communication device, the device can be miniaturized and the cost can be reduced. In addition, in the case of a system for paying the expressway toll by drawing money from a bank account or the like as in the present embodiment, if the individual identification data for which the bank account or the like is specifically used is stored in the IC memory 23, the Even if the on-board communication device is in a state of being enabled, the individual identification data is not stored. Therefore, the individual identification data cannot be sent to the terrestrial communication device, and the toll fee cannot be settled. End without any monetary damage.

Here, the ground communication apparatus of the automatic charging system provided at the exit of the highway will be described.

Referring to Fig. 7, 70 is a roadside antenna of a terrestrial communication device which receives radio waves from the communication antenna 30 of the on-board communication device and transmits the radio wave toward the communication antenna 30. This is provided at a predetermined position higher than that of the vehicle. In addition, the on-air antenna 70 may be provided using a gate over a road. The hearth antenna 70 is connected to a communication unit (not shown) for terrestrial communication devices, and transmits and receives a transmission signal and a reception signal therebetween. In addition, at the exit of the highway, an entrance detector 72 for detecting that the vehicle has entered a range obtained by transmitting and receiving with a high reception strength by the terrestrial communication device and the on-vehicle communication device, and an evacuation detector 73 for detecting the exit from the range Is installed. On the downstream side of the vehicle flow direction of the eviction detector 73, an indicator 74 is provided for indicating that the toll is received as a result of the communication between the communication devices, the amount thereof, and the like. The display of the information by the indicator 74 ends when the vehicle passing sensor 75 provided adjacent to the indicator 74 detects the passage of the motorcycle. Further, cameras 76 and 77 are provided at the vehicle entry and exit ends at the highway exit to recognize the vehicle numbers from the rear and the front. In addition, 78 is a toll booth for paying a toll by cash conventionally.

Hereinafter, the operation of the engine control unit will be described with reference to FIG. 8, mainly with the control of the on-vehicle communication device.

When the card key 20 is inserted into the insertion hole l0a, the card key 20 is preserved so as not to be missed by a member (not shown), and the main switch 41 in the insertion hole l0a is turned on. The power supply of the engine control unit 40 is turned on (S). In addition, the engine control unit 40 includes a power supply circuit therein, and even if the main switch 4l is turned off due to the card key 20 being pulled out for some reason, the power supply is not cut off by itself. It is not supposed to.

When the power supply of the engine control unit 40 is turned on, the power supply of each load such as the card reader 25 excluding the engine control l system and the communication unit 29 is turned on at the same time. When the power of the card reader 25 is turned on, electromagnetic waves are generated in the power generation coil 28, and current is generated in the power generation coil 27 of the card key 20 that receives the electromagnetic waves, and current is generated by the current. 20 becomes operable, and the card reader 25 can read the data stored in the IC memory 23 through the communication coils 23 and 26.

Thereafter, the data read signal is transmitted to the card reader 25 (S2). The card reader 25 having received the signal reads data such as dark data stored in the IC memory 23 and transmits it to the engine control unit 40. The transmitted data is stored in the RAM 1. Of these, the cancer data is matched against the cancer data stored in the ROM (S3). If there is a match, the handle lock release routine (S4) is executed to release the handle lock, and then the engine control system such as the ignition coil 43 is executed. The power of the device is turned on (S5) to enable the engine to be started, and the power of the communication unit 29 is turned on (S6) to enable the on-vehicle communication device. When the on-vehicle communication device becomes operable, the signal from the terrestrial communication device enters the signal standby state S7. When the on-board communication device receives the signal from the terrestrial communication device, the transmission and reception routine S8 is executed. On the other hand, the signal to the on-vehicle communication device is transmitted from the roadside antenna 70 after the entrance detector 72 of the highway exit detects the entry of the motorcycle, and before the eviction detector 73 detects the eviction of the motorcycle. It is supposed to be. This timing is the same at the highway entrance.

Also, by detecting the on / off of the main switch 41, it is detected whether the card key 20 is inserted (S9). If the main switch 41 is on, the card key 20 is inserted. If it is determined that the alarm sound indicating that the omission is stopped (S10). At this time, if the alarm sound is not generated, the state where the alarm sound is not generated is maintained. On the other hand, when the main switch 41 is off, in the case where the vehicle speed is 1 km / h or more (S11), an alarm is issued to notify that the card key 20 is missing (S12). On the other hand, when the vehicle speed is 1 km / h or less (S11), it is determined that the card key 20 may be missing due to the end of driving of the vehicle, and the integrated distance and the like in the EEPROM in the engine control unit 40 are determined. After the operation (S13) of writing the predetermined data, the power supply circuit is cut out by the engine control unit 40 itself (S14), and the engine control is terminated. Thereby, the power supply of various apparatuses connected to the engine control unit 40 is cut off. On the other hand, when the dark data does not coincide in the step indicated by "S3", an error is displayed (S15), and when it is detected that the main switch 41 is off (S16), the card key It is determined that 20 is missing, and the power supply circuit is cut by the engine control unit itself (S14).

However, in the handle unlocking routine S4, as shown in Fig. 9, first, the on / off of the on detection switch 53 is detected (S21). If the switch 53 is off, the handle is locked. The solenoid (not shown), which is the driving unit of the handle lock mechanism 14, is unlocked at the same time as the notification (S22), for example, by emitting an alarm sound (S23). On the other hand, if the switch 53 is on, the alarm is stopped (the alarm stop state is maintained) (S24) and the operation of the handle lock mechanism 14 is stopped at the same time (the operation is kept in the stopped state) (S25). ).

In the transmission / reception routine S8, as shown in Fig. 10, first, the type of the signal from the received terrestrial communication apparatus is determined (S31). Of the transmitted signals, the entry point data of the expressway is stored in the RAM (S32), and if it is a signal received at the exit of the highway, the entry point data of the return highway and the darkening data, which is the individual identification data, are transmitted from the communication unit 29 to the communication antenna ( 30) and transmits to the terrestrial communication device (S33).

When the terrestrial communication device receives the entrance point data and the cancer data of the expressway, it calculates the toll at the moment based on the population identification data and confirms that a bank account is designated in response to the cancer data. And it displays on the display 74 that the charge was received. If a fee cannot be collected due to a failure in communication or the absence of a designated account, the toll, the inability to collect the fee, and the intention to seek payment at the toll booth 78 are displayed. These display ends when the vehicle passing sensor 75 detects the passage of the vehicle. In addition, when it is impossible to collect the toll fee even by any of the officers of the automatic billing system and the toll booth 78, the vehicle number is specified by the cameras 76 and 77 installed at the entrance and exit stages of the exit. The toll is charged to the vehicle owner or user. On the other hand, in the present embodiment, when the eviction detector 73 detects the eviction of the vehicle, the cameras 76 and 77 recognize the numbers from before and after the vehicle.

By the way, in the said embodiment, although the number of dark data which can be stored in the card key 20 is one, in order to be able to store several dark data in the IC memory 23 of the card key 20, for example, There are installed l00 dark data memory boxes (hereinafter, simply referred to as boxes) with numbers from 1 to 100 in sequence, and any one of the memorized data stored therein is stored in the ROM of the engine control unit 40. In accordance with the cancer data, the card key 20 is judged to be appropriate, and the engine can be started and the on-vehicle communication device can be operated. Hereinafter, the operation of the engine control unit in this case will be described with reference to FIG. 11 with respect to the difference from the operation shown in FIG.

In this embodiment, when the card key 20 is inserted into the insertion hole 10a and the power supply of the engine control unit 40 turns on (S41), before sending a data readout signal to the card reader 25 after that, Initializing the variable N to count the number of reads of the cancer data (S42) and adding 1 to the variable N at the same time, the variable N calculates a new value (S43), and then the card reader 25 In step S44, a data readout signal including a command to read the dark data stored in the number N boxes is read.

The card reader 25 having received the signal reads the memorized data stored in the N number of boxes from the IC memory 23 and transmits it to the engine control unit 40. The dark data among the transmitted data is matched with the dark data stored in the ROM (S45), and if it matches, the steps following "S4" in Fig. 8 are executed. On the other hand, if it does not match, it is determined whether or not the value of the variable N has reached 100 (S46), and if not, the step after "S43" is executed again. If the variable N is equal to 100, the cancer data stored in all the boxes does not match the cancer data stored in the ROM, and the steps following &quot; S15 &quot;

In this way, a plurality of vehicles and the on-vehicle communication apparatus mounted thereon can be operated with one card key, and the convenience when using a plurality of vehicles is improved. In contrast, when a plurality of people share one vehicle, it is possible to cope by preparing only the required number of card keys in which the same encryption data is stored.

In the present embodiment, the on-vehicle communication apparatus mounted on the motorcycle has been described, but it is of course possible to apply the on-vehicle communication apparatus of the present invention to a four-wheeled vehicle.

As described above, according to the present invention, if the dark data read by the card reader is not appropriate, the communication unit is not enabled and the on-vehicle communication device is not operated. Thus, the safety against theft of the on-vehicle communication device is improved.

In addition, since the card to be used is only good with a card key, writing is good, and since the card reader for the communication device can be used as the card reader of the card key system and the memorization data check means can be used as the engine control unit, respectively, Miniaturization and cost reduction can be achieved.

On the other hand, when any of the plurality of dark data stored in the card key coincides with the dark data stored in the engine control unit, and judges that the data is appropriate, a plurality of vehicles and on-vehicle communication mounted on the one card key are determined. Since the device can be operated, the convenience is improved.

Claims (2)

The communication unit that communicates with the terrestrial communication device, the card reader that reads the dark data stored in the card reader, and the dark data read by the card reader are judged to be appropriate, and the engine can be started when appropriate. An on-vehicle communication device having an engine control unit, wherein the on-vehicle communication device is configured to be operable only when the engine control unit determines that the dark data read by the card reader is appropriate. The method of claim 1, A plurality of cancer data is stored in the card key, and the engine control unit is configured to determine that the cancer data is appropriate when any one of the plurality of memory data matches the cancer data stored in the engine control unit. On-vehicle communication device characterized in that.