JP2008297721A - Electronic key control system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a vehicle key operation to be performed only when a vehicle key registrant himself/herself performs the vehicle key operation in a state with no influence of alcohol, unsuitable for driving, by performing the processing of authentication and the determination of the presence or absence of the influence of alcohol in a closed manner inside a portable terminal as a transmitter for an electric key. <P>SOLUTION: This control system enables user authentication using the retina and the determination of the presence or absence of the influence of alcohol in the user's exhaled air to be performed inside a cellular phone terminal, generates a key command by determining that the user can drive his/her vehicle, in the case of the sequential establishment of the result of the authentication and that of the determination of the presence or absence of the influence of alcohol, and transmits the generated key command to a vehicle side so as to control the start/stop of the power mechanism of the vehicle and locking/unlocking by a door key. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle electronic key control system that performs key control of a vehicle using, for example, a portable terminal.

  2. Description of the Related Art In recent years, in passenger cars, control using an electronic key for opening / closing a door, starting an engine, and the like by using short-range wireless communication instead of a mechanic key has become widespread for convenience of operation. On the other hand, theft of vehicles, drunk driving for safe driving and poor physical condition (overworked) driving have become major problems. When the electronic key transmitter is stolen in the same manner as a mechanic key, there is a problem in that it is treated as a vehicle theft by impersonation using the key. Therefore, it is necessary to provide the electronic key transmitter with an authentication function for identifying the user. In addition, drinking is caused by the preference and personality of the vehicle user, and poor physical condition is caused by the living (working) environment and the health condition unique to the individual, so it is difficult for the user himself to regulate driving. Therefore, if the transmitter of the electronic key is equipped with a function for discriminating the drinking and physical condition in addition to the authentication function, the electronic key control can be performed only when it passes and the vehicle can be prevented from being stolen. It is possible to reduce the occurrence of traffic accidents.

  As a conventional technology, mounted on a camera-equipped mobile phone, for example, biometric information such as face images and retina information is acquired from the camera and collated with data stored in advance, and personal authentication is performed only within the same device. A technique has been proposed (see, for example, Patent Document 1). On the other hand, an alcohol sensor is connected to the mobile phone, the alcohol amount detected by the sensor is automatically written in the e-mail function of the mobile phone and sent to the management center, where the management center determines alcohol and returns the determination result to the mobile phone. And the technique which performs a drunk driving suppression warning is proposed (for example, refer patent document 2).

JP 2005-63077 A JP 2005-122673 A

The personal authentication method described in Patent Document 1 is superior in that authentication processing can be performed without taking out personal authentication information outside the mobile phone, but how to use it for electronic key control of a vehicle, It does not solve the problem of giving the electronic key a composite function of accident prevention means such as an authentication function of being an owner of an electronic key and drunk driving or poor health driving.
On the other hand, the drunk driving deterrence warning technology described in Patent Document 2 solves the problem of making drunk driving impossible regardless of the driver's consciousness, only to warn the driver to refrain from drunk driving. Absent. Moreover, since the process uses communication with the management center, the system is large.

  The present invention was made to solve the above-mentioned problems, and is a registrant of a vehicle key by performing processing of authentication and alcohol determination in a portable terminal serving as an electronic key transmitter, It is another object of the present invention to provide a vehicle electronic key control system that enables key operation of a vehicle only when it is not in an inappropriate driving state.

  The vehicle electronic key control system according to the present invention is a vehicle electronic key control system that performs vehicle key control by short-range wireless communication from a portable terminal, and the portable terminal registers in advance a retinal image captured by a mounted camera. User authentication means that performs personal authentication by collating with retina information of a specific user, and measuring the alcohol concentration of the user's breath taken by the exhaled breath collector, whether the measured concentration is below a predetermined value Determined by a driver suitability determining unit, a driver suitability determining unit that determines that the driver is suitable when the authentication result of the user authentication unit and the determination result of the alcoholic state determining unit are sequentially established. A key generation means for generating a key command of control content set in advance based on the information suitable for driving and a transmission means for transmitting the generated key command to the vehicle. Receiving means for receiving the key command transmitted from the vehicle, key control means for outputting a control command based on the content of the received key command, and starting and stopping of the power mechanism of the vehicle based on the control command Power mechanism control means is provided.

  According to the present invention, only when the vehicle key registrant is confirmed and the vehicle is not in a drinking state, the vehicle engine or door can be operated by the key. There is an effect that electronic key control corresponding to both can be realized.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a functional configuration of a vehicle electronic key control system according to Embodiment 1 of the present invention. The vehicle electronic key control system according to the present invention includes the following equipment on the mobile phone terminal (mobile terminal) 100 and the vehicle 200 side. Since mobile phone terminals and electronic key transmitters are generally carried at all times, the functions of the camera and the display unit can also be used, and it is convenient to carry by integrating them. In Embodiments 1 and 2, An example in which a mobile phone terminal is provided with an electronic key transmitter function will be described.
In the mobile phone terminal 100, as a user authentication means for confirming whether or not the user is a registrant of the terminal (or electronic key), a camera 101 for photographing the retina, and a user information storage for registering and storing retina information of a specific user in advance A retina authentication processing unit 102 that performs personal authentication by comparing a retina image acquired by the camera 111 with the retina information of a specific user. Further, as a drunk state determination means for examining whether or not the owner of the terminal is in a drunk state inappropriate for driving the vehicle, the breath collector 103 that captures the breath of the user, the alcohol concentration of the collected breath is measured and measured An alcohol concentration detection / determination unit 104 that determines whether or not the concentration is below a predetermined value is provided.

  The cellular phone terminal 100 further includes the following means. The driver suitability determination unit 105 is a unit that determines that the driver is suitable when the authentication result of the retina authentication processing unit 102 and the determination result of the alcohol concentration detection determination unit 104 are sequentially established. The key generation unit 106 is a unit that generates a key command of control contents set in advance based on the driving suitability information determined by the driver suitability determination unit 105. The transmission unit 107 is means for transmitting the generated key command to the vehicle from the transmission antenna. The display unit 108 has a display panel such as a liquid crystal, and is a means for appropriately displaying processing results and the like by the driver suitability determination unit 105 and the key generation unit 106.

  On the other hand, in the vehicle 200, the receiving unit 201 is a unit that receives a key command transmitted wirelessly from the mobile phone terminal 100. The key control unit 202 is a unit that outputs a control command based on the content of the key command received by the receiving unit 201. The engine control unit (power mechanism control unit) 203 is a unit that controls start and stop of the engine based on a control command from the key control unit 202. The door key control unit 204 is means for controlling the unlocking and locking of the door key based on a control command from the key control unit 202.

Next, processing of the vehicle electronic key control system will be described with reference to the flowchart of FIG.
First, the authentication function and the alcohol detection function are activated by the menu button or activation button of the mobile phone. The user directs his / her eyes to the lens of the camera 101 to take a picture of the retina, and the camera 101 sends the acquired retina image data to the retina authentication processing unit 102 (step ST1). In the retinal authentication processing unit 102, the retinal image acquired by the camera 101 is checked against the retinal information of the registrant stored in the user information storage unit 111, and the confirmation result, for example, matches the registered retinal information. If there is a corresponding registrant's identification symbol, or if there is no matching retinal information (including judgment impossible), the driver's suitability determining unit 105 is notified of the identification symbol indicating that there is no relevant person (step ST2). . On the other hand, the user blows the breath collector 103 at the same time or immediately after photographing the retina. The exhalation collector 103 collects the exhalation and sends it to the alcohol concentration detection determination unit 104 (step ST3). The alcohol concentration detection / determination unit 104 measures the alcohol concentration of the collected breath and determines whether or not the measured concentration is at a predetermined value. If the determination result, that is, the concentration is equal to or higher than the predetermined value, for example, output When “0” is equal to or less than the predetermined value (including the case where it is not detected), for example, the output “1” is notified to the driver suitability determination unit 105 (step ST4).

  In the driver suitability determination unit 105, in the confirmation result from the authentication processing unit 102 (step ST5), in the case of an identification symbol with no corresponding person, the display unit 108 displays, for example, “authentication impossible”. The process ends (step ST6). In the case of the registrant's identification symbol, the determination result from the alcohol concentration detection determination unit 104 is awaited (step ST7). This waiting time is set by using a timer (not shown) in the mobile phone terminal 100, and if it is too long, it is considered that the person who blows the breath may be replaced with the authenticated person. And Therefore, if the output from the concentration detection determination unit 104 does not come within the predetermined time set by the timer, the display unit 108 displays, for example, “unsuitable driving” or “unlockable” and the process ends. (Step ST8). On the other hand, if the determination result from the alcohol concentration detection determination unit 104 arrives within a predetermined time set by the timer (step ST9), if the output is “0”, the same display as in step ST8 is performed. finish. When the output is “1”, since the output from the authentication processing unit 102 is the registrant's identification symbol, the driver suitability determination unit 105 determines that the authentication is successful and the vehicle is suitable for driving, and the driving suitability is determined. Is provided to the key generation unit 106 and a display such as “successful authentication” is performed on the display unit 108 (step ST10).

When the key generation unit 106 receives the driving suitability information from the driver suitability determination unit 105, the key generation unit 106 generates a key command for the vehicle 200 and transmits it wirelessly via the transmission unit 107 (step ST11). Here, as shown in the key command management table of FIG. 3, the key command specifies the operation by the key command number, and the key control unit 202 on the vehicle 200 side also includes a corresponding table. Items can be added to or deleted from this table. When generating the key command, the key generation unit 106 generates the key command according to the contents of the user authority management table shown in FIG. For example, since the registrant (corresponding to the identification symbol) “A” has the door key control right and the engine control right, the key instruction number is “1” for unlocking the door key and starting the engine. This user authority management table also has a configuration in which users and authority items can be added / deleted.
The key command transmission method is short-range wireless communication, but any method such as infrared rays, Bluetooth (registered trademark), ZigBee (registered trademark), or RFID (Radio Frequency IDentification) may be used. Further, by using a secure protocol such as SSL for communication, it is possible to prevent external attacks.

  The key command transmitted from the mobile phone terminal 100 is received by the receiving unit 201 of the vehicle 200 and given to the key control unit 202. Based on the key number of the received key command, the key control unit 202 refers to the same key command management table as shown in FIG. 3 and outputs the corresponding control command. In this example, since the key command number is “1”, the door key control is “open” and the engine control is “start”, and a control command corresponding to each is output. When receiving the control command, the door key control unit 204 controls the door key to the unlocked state. Moreover, the engine control part 203 will control an engine in a startable state, if a control command is received (step ST12).

As described above, according to the first embodiment, it is possible to perform user authentication using the retina and determination of the alcohol state of the user's breath in the mobile phone terminal, and when the authentication result and the alcohol determination result are sequentially established. It is determined that driving is appropriate and a key command is generated, and the generated key command is transmitted to the vehicle side to control engine start start / stop, door key unlocking, and locking control. Therefore, only when the vehicle key registrant is confirmed and the vehicle is not in a drunk state, the vehicle key can be operated, so electronic key control corresponding to both theft prevention and drunk driving prevention is provided. Can be realized.
The present invention can also be applied to a case where the power mechanism of the vehicle is not an engine but a motor. Therefore, the invention can also be applied to judgment management of driving aptitude such as a drunk state of a train driver.

Embodiment 2. FIG.
FIG. 5 is a block diagram showing a functional configuration of the vehicle electronic key control system according to the second embodiment of the present invention. In the figure, portions corresponding to those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted in principle. In the second embodiment, the cellular phone terminal 100 newly measures a body temperature sensor 112 that measures the body temperature of the user scheduled to drive, a pulse sensor 113 that measures the pulse of the user, and a physical condition database 115 that stores the measurement history of the body temperature and the pulse. And a physical condition management unit 114 that determines a physical condition using the measurement history of body temperature and pulse. Further, the driver suitability determination unit 105 performs processing in consideration of this additional configuration, as will be described later. The physical condition database 115 may use an empty area of the user information storage unit 111.

Next, the operation of the function added in the second embodiment will be described according to the flowchart of FIG.
The pulse sensor 113 and the body temperature sensor 112 measure the pulse and body temperature of the user scheduled to drive, and transmit the measurement results to the physical condition management unit 114 (steps ST31 and ST32). The physical condition management unit 114 stores the received pulse data and body temperature data in the physical condition database 115, and obtains a standard deviation with respect to the past measurement history (step ST33). Next, it is checked whether or not the calculation result deviates from a set range (for example, a deviation value of 40 or more and 60 or less) (step ST34), and if it is within the set range, it is determined that the physical condition is normal, The physical condition flag in the physical condition database 115 is set to normal “OK” (step ST35). On the other hand, when it is outside the set range, it is determined that the physical condition is abnormal, and the physical condition flag is set to abnormal “NG” (step ST36). This process is performed at regular time intervals or when a trigger such as a user's voluntary measurement is applied (step ST30).

Next, differences from the first embodiment in the processing of the driver suitability determination unit 105 will be described with reference to the flowchart of FIG. FIG. 7 shows the processing of steps ST13 to ST15 shown in the broken line frame in place of step ST10 in the processing of FIG. 2, and therefore only these processing will be described below.
When it is authenticated as a registrant by retina authentication and the alcohol concentration is lower than or equal to the set concentration (normal), the physical condition determined by the physical condition management unit 114, that is, the physical condition flag in the physical condition database 115 is checked (step ST13). ). When the physical condition flag is normal “OK” (step ST14), the driver suitability determining unit 105 determines that the driver is suitable for driving, and gives the key generating unit 106 the driving suitability information and issues a key command generation command. The display unit 108 displays, for example, “authentication success” or “key acquisition” (step ST15). On the other hand, if the physical condition flag is abnormal “NG” in step ST14, it is determined that the physical condition of the corresponding user is abnormal, and a confirmation message is displayed on the display unit 108 indicating whether the physical condition is abnormal and whether the vehicle is to be driven. Display and wait for the user's judgment (step ST16). If it is selected in the answer from the user (step ST17) that the user does not drive, it is determined that the physical condition is abnormal and the process is terminated. On the other hand, if it is selected to drive, the process of step ST15 is performed.
In step ST14, when the physical condition flag is abnormal “NG”, and the deviation value is, for example, a value that is far away from the set range, or that the heat is 40 ° C. or more, etc., It may be automatically determined that the vehicle is not ready for driving, and the process may be terminated without making a driving inquiry to the corresponding user.

  As described above, according to the second embodiment, in addition to the function of user authentication using the retina of the first embodiment and the determination of the breathing state of the user's breath, the physical condition is determined using the measurement results of body temperature and pulse. A function for determining is provided in the mobile phone terminal, and when both the authentication result and the determination result of the alcohol state are established, the propriety of driving the vehicle is further determined based on the physical condition. Therefore, it is possible to perform highly secure electronic key management in consideration of the user's health condition.

It is a block diagram which shows the function structure of the vehicle electronic key control system by Embodiment 1 of this invention. It is a flowchart which shows the process sequence of the vehicle electronic key control system which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the structure of the key command management table which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the structure of the user authority management table which concerns on Embodiment 1 of this invention. It is a block diagram which shows the function structure of the vehicle electronic key control system by Embodiment 2 of this invention. It is a flowchart which shows the process of the additional function of the vehicle electronic key control system which concerns on Embodiment 2 of this invention. It is a flowchart which shows the process sequence of the vehicle electronic key control system which concerns on Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 Mobile phone terminal, 101 Camera, 102 Retina authentication processing part, 103 Breath collector, 104 Alcohol concentration detection determination part, 105 Driver suitability determination part, 106 Key generation part, 107 Transmission part, 108 Display part, 111 User information storage Part, 112 body temperature sensor, 113 pulse sensor, 114 physical condition management part, 115 physical condition database, 200 vehicle, 201 receiving part, 202 key control part, 203 engine control part, 204 door key control part.

Claims (6)

A vehicle electronic key control system that performs vehicle key control from a portable terminal by short-range wireless communication,
The portable terminal is
User authentication means for performing personal authentication by collating a retina image captured by a mounted camera with retina information of a specific user registered in advance;
Measuring the alcohol concentration of the user's breath taken in by the exhaled breath collector, and determining whether or not the measured concentration is below a predetermined value;
A driver suitability determination unit that determines that the driver is suitable when the authentication result of the user authentication unit and the determination result of the alcohol state determination unit are sequentially established;
A key generating means for generating a key command of preset control content based on the driving suitability information determined by the driver suitability determining means;
A transmission means for transmitting the generated key command to the vehicle;
The vehicle is
Receiving means for receiving a key command transmitted from the portable terminal;
Key control means for outputting a control command based on the content of the received key command;
A vehicle electronic key control system comprising power mechanism control means for controlling start and stop of a power mechanism of the vehicle based on a control command.   2. The vehicle electronic key control system according to claim 1, wherein the vehicle includes door key control means for controlling unlocking and locking of the door key based on a control command output by the key control means.   The driver suitability determining means is determined to be unsuitable for driving if the determination result of the alcohol state determining means is not obtained within a predetermined time after obtaining the authentication result of the user authenticating means. The vehicle electronic key control system according to claim 1 or 2. Mobile devices
A body temperature sensor that measures the body temperature of the user scheduled to drive;
A pulse sensor for measuring the pulse of the user;
A physical condition database for storing body temperature and pulse measurement history;
When measured by the body temperature sensor and the pulse sensor, each measurement result is stored in the physical condition database, and a standard deviation with respect to the measurement history is calculated, and the physical condition depends on whether the calculated standard deviation falls within a preset range. Equipped with physical condition management means to judge the state
The driver suitability determining means determines whether or not the vehicle is suitable for driving based on the physical condition determined by the physical condition managing means when both the authentication result of the user authenticating means and the determination result of the alcohol state determining means are established. The vehicle electronic key control system according to any one of claims 1 to 3, wherein the vehicle electronic key control system is determined.   The driver suitability determining means makes an inquiry to the user using the display unit when the physical condition determined by the physical condition managing means is abnormal, and determines whether the vehicle is suitable for driving according to the user's answer. The vehicle electronic key control system according to claim 4, wherein:   6. The vehicle electronic key control system according to claim 1, wherein the mobile terminal is a mobile phone terminal.

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