JP2009173184A - Control device and control method of onboard equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device and a control method capable of optimizing a condition for automatically controlling an onboard equipment, by a comparatively little operation. <P>SOLUTION: The control device for the onboard equipment includes a recommended operation deciding portion (23) recommending first operation to any one of setting items of the onboard equipment on the basis of the state information about a vehicle, and a second operation to another one of the setting items of the onboard equipment; a controlling portion (24) having a first control level and a second control level different from each other as a control level regulating a control method about the operation recommended by the recommended operation deciding portion (23), executing first operation according to the control level corresponding to the first operation when the first operation is recommended, and executing second operation according to the control level corresponding to the second operation when the second operation is recommended; a memory portion (21) memorizing the control level corresponding to the first and second operation; and a control level changing portion (25) changing the control level of the first operation so as to match with the control level of the second operation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a control device and a control method for on-vehicle equipment, and more particularly to a control device and a control method for recommending operation of on-vehicle equipment according to a predetermined condition.

  In recent years, in order to reduce the load on a driver for operating a vehicle-mounted device, various devices that automatically control the vehicle-mounted device based on information about the vehicle or information around the vehicle, such as an autolight and an inter-vehicle distance maintenance system. Control devices have been developed. Such an automatic control device automatically corrects a setting that seems appropriate for a specific on-vehicle device without any operation of the driver. However, the automatically modified settings may not always match the settings that the driver considers appropriate. If the corrected setting does not match the setting that the driver considers appropriate, the driver manually recorrects the setting of the vehicle-mounted device. For this reason, even if such an automatic control device is employed, the operation load on the driver may not be reduced.

  On the other hand, before changing the settings of the on-board equipment, an automatic control system has been developed to notify the driver of the changed settings and execute the setting change when the driver performs an operation to approve the setting change. Has been. Such an automatic control system can prevent the on-vehicle equipment from being controlled to a setting contrary to the will of the driver. However, even for an operation that the driver wants to be automatically executed, if the driver's approval is requested to execute the operation, the operation load on the driver cannot be reduced, and the driver may feel uncomfortable. become. Therefore, an automatic control device has been developed that asks the driver for approval for an operation to be automatically executed, but eliminates the question to the driver while the driver continues to approve the operation (Patent Document 1). See).

JP 2007-38932 A

  The automatic control system described in Patent Document 1 has an automatic execution condition for automatically executing an operation for each vehicle-mounted device or a function of the vehicle-mounted device, and an inquiry condition for performing an operation after obtaining approval from the driver. is doing. These conditions are learned based on the driver's approval operation or rejection operation for each vehicle-mounted device or for each function of the vehicle-mounted device. Therefore, when a driver desires to automatically control a plurality of vehicle-mounted devices under a specific situation, the driver must make sure that the specific situation is included in the automatic execution condition corresponding to each vehicle-mounted device. I had to learn for each vehicle-mounted device. Further, if the situation is different, even if the automatic control to be performed on the on-vehicle equipment is the same, the automatic execution condition has to be learned for each situation. Therefore, many operations may have to be performed to optimize the automatic execution conditions.

  Accordingly, an object of the present invention is to provide a control device and a control method capable of optimizing conditions for automatically controlling a vehicle-mounted device with relatively few operations.

According to the first aspect of the present invention, as one aspect of the present invention, a control device for controlling a vehicle-mounted device is provided. The control device includes a first operation for any setting item of at least one vehicle-mounted device based on state information about the vehicle, or a second operation for any other setting item of at least one vehicle-mounted device. A recommended operation determining unit (23) that recommends the control and a control level that defines a control method related to the operation recommended by the recommended operation determining unit (23) have a first control level and a second control level that are different from each other. When the first operation is recommended, the first operation is executed according to the control level corresponding to the first operation, and when the second operation is recommended, the second operation is supported. A control unit (24) that executes a second operation according to the control level, a storage unit (21) that stores a control level corresponding to the first operation and the second operation, and a control level of the second operation To match A control level changing unit for changing the control level of the first operation and (25).
By having such a configuration, the control device according to the present invention sets the control level of the operation of interest with reference to the control level of other operations, so only the response of the driver when the operation of interest is recommended. The control level can be set without depending on it. Therefore, the conditions for automatically controlling the on-vehicle equipment can be optimized with relatively few operations.

  According to a second aspect of the present invention, the first control level is an automatic control level for automatically executing a recommended operation, and the second control level is an occupant before executing the recommended operation. It is preferable that the approval control level be set to require approval.

  Further, according to the third aspect of the present invention, when the first operation is recommended by the recommended operation determining unit (23) and the control level of the first operation is the approval required control level, the control unit (24) When an operation for approving the first operation is input via the user interface unit (15, 16), or when the control level of the first operation is an automatic control level, the first operation is executed. Is preferred.

According to a fourth aspect of the present invention, the control level changing unit (25) sets the control level of the first operation to the second level when the similarity between the first operation and the second operation is equal to or greater than a predetermined threshold. It is preferable to match the control level of the operation.
By having such a configuration, the control device according to the present invention can adjust the control level between similar operations. Therefore, it is possible to eliminate the driver's uncomfortable feeling caused by the difference in control level between similar operations.

Further, according to the fifth aspect, the degree of similarity recommends the first state information used for recommending the first operation among the state information and the second operation among the state information. It is preferable that the second state information is used for the similarity.
By having such a configuration, the control device according to the present invention can match the control levels between operations recommended in the same situation.

Alternatively, according to the sixth aspect, the storage unit (21) performs the number of direct operations in which the vehicle-mounted device is directly operated by the occupant, and the first operation and the second operation are simultaneously performed on the vehicle-mounted device. It is preferable that the number of co-occurrence is stored and the similarity is a ratio of the number of co-occurrence and the number of direct operations.
By having such a configuration, the control device according to the present invention can match the control levels between operations that are likely to be performed simultaneously.

According to the seventh aspect of the present invention, as another embodiment of the present invention, a control method for controlling at least one vehicle-mounted device is provided. The control method includes a first operation for any setting item of at least one vehicle-mounted device based on state information about the vehicle, or a second operation for any other setting item of at least one vehicle-mounted device. A recommended operation determining step that recommends the control method, and a control level that defines a control method relating to the first operation and the second operation, the first control level and the second control level are different from each other. A control level determination step for determining whether the control level corresponding to the second operation is the first control level or the second control level, and the first operation when the first operation is recommended A control execution step of executing the first operation according to the control level to be executed and executing the second operation according to the control level corresponding to the second operation when the second operation is recommended; To match the second operation of the control level, and a control level changing step of changing the control level of the first operation.
By having such a configuration, the control method according to the present invention sets the control level of the operation of interest with reference to the control level of other operations, so only the response of the driver when the operation of interest is recommended. The control level can be set without depending on it. Therefore, the conditions for automatically controlling the on-vehicle equipment can be optimized with relatively few operations.

  According to the eighth aspect of the present invention, the first control level is an automatic control level that automatically executes a recommended operation, and the second control level is an occupant before executing the recommended operation. It is preferable that the approval control level be set to require approval.

  According to a ninth aspect of the present invention, in the control execution step, the first operation is recommended by the recommended operation determination step, the control level of the first operation is the approval required control level, and the first operation is approved. It is preferable to execute the first operation when the control is performed or when the control level of the first operation is the automatic control level.

According to the tenth aspect of the present invention, the control level changing step sets the control level of the first operation to the second operation when the similarity between the first operation and the second operation is equal to or greater than a predetermined threshold. It is preferable to match the control level.
By having such a configuration, the control method according to the present invention can adjust the control level between similar operations. Therefore, it is possible to eliminate the driver's uncomfortable feeling caused by the difference in control level between similar operations.

Further, according to the eleventh aspect, the degree of similarity recommends the first state information used for recommending the first operation in the state information and the second operation among the state information. It is preferable that the second state information is used for the similarity.
By having such a configuration, the control method according to the present invention can match the control levels between operations recommended in the same situation.

Alternatively, according to the twelfth aspect, the number of direct operations in which the vehicle-mounted device is directly operated by an occupant and the number of co-occurrence in which the first operation and the second operation are simultaneously performed on the vehicle-mounted device are calculated. The method further includes a step of storing, and the similarity is preferably a ratio between the number of co-occurrence and the number of direct operations.
By having such a configuration, the control method according to the present invention can match the control levels between operations that are likely to be performed simultaneously.

In the above, the state information about the vehicle includes not only information about the vehicle itself, for example, vehicle speed, vehicle position, but also information about the situation around the vehicle, for example, air-conditioning information such as inside temperature and outside temperature, current time , Presence / absence of rain, etc., and setting information of each on-vehicle device, for example, power on / off of the audio device, volume, set temperature of the air conditioner, and the like.
Moreover, the code | symbol in the parenthesis attached | subjected to each said part is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

Hereinafter, a control apparatus for a vehicle-mounted device according to an embodiment of the present invention will be described.
The control device for on-vehicle equipment according to the embodiment of the present invention automatically determines the setting of on-vehicle equipment that is considered appropriate based on information on the vehicle itself or information on the situation around the vehicle. Then, the control device determines whether an operation for setting the vehicle-mounted device is automatically executed according to the control level or presented to the driver for approval. When the driver approves the operation or the control level corresponding to the operation is the automatic execution level, the control device controls the on-vehicle equipment so that the setting is achieved. This control device automatically controls each vehicle-mounted device by changing the control level of the presented or automatically executed operation based on the control level related to the similar operation as well as the driver's response to the presented operation. The conditions to be optimized are optimized.

  FIG. 1 shows an overall configuration of a vehicle control system 1 including a control device 2 according to an embodiment of the present invention. As shown in FIG. 1, the vehicle control system 1 includes an audio device 3, an air conditioner 4, a driving support device 5 such as an auto cruise control (hereinafter referred to as ACC), a body control device 6 for each part of the vehicle body such as a wiper and a power window. Etc., and a plurality of on-vehicle equipment and a control device 2 for controlling them. Each vehicle-mounted device and the control device 2 are connected to each other by a control area network (hereinafter referred to as CAN) 10. And the control apparatus 2 controls each vehicle mounting apparatus by transmitting a control signal to each vehicle mounting apparatus through CAN10. On the other hand, the control device 2 acquires various types of information from each vehicle-mounted device through the CAN 10. The information includes, for example, current state information indicating the current setting of each on-vehicle device, and operation information indicating the operation when an operation by the driver is performed.

  In addition, a plurality of sensor devices such as a raindrop sensor 11, an inside air temperature sensor 12, and a vehicle speed sensor 13 are connected to the CAN 10. The navigation device 14 is also connected to the CAN 10 and functions as a sensor device that acquires vehicle position information. The control device 2 can acquire information on the vehicle or information on the situation around the vehicle from these sensor devices via the CAN 10.

  Furthermore, the vehicle control system 1 also has a display 15 and a simple input interface 16, which are also connected to the control device 2 through the CAN 10. The display 15 and the simple input interface 16 constitute a user interface unit for the driver. The display 15 is composed of, for example, a liquid crystal display or an organic EL display, and is arranged in the instrument panel. The display 15 may be arranged independently of the instrument panel, or may be used as a display of another device such as the navigation device 14. The simple input interface 16 includes a YES button switch 161 for performing an approval operation for the operation presented from the control device 2, and a NO button switch 162 for performing a rejection operation for the presented operation. Have The simple input interface 16 is attached to, for example, a handle, and the driver can operate the simple input interface 16 without removing the hand from the handle. The simple interface 16 is not limited to the YES button switch 161 or the NO button switch 162 as long as it is a means that enables operations such as approval and rejection of the contents presented from the control device 2. For example, a lever, slide switch, dial switch, encoder, or the like may be configured as an input device. These input devices can be arranged on the steering, on the instrument panel, on the center console or the like. Further, the simple input interface 16 may be implemented as a soft switch composed of a display and a touch panel. Such an input device can be disposed on an air conditioner panel, a display of a navigation device, or the like.

  The control device 2 includes one or a plurality of microcomputers (not shown) including a CPU, ROM, RAM, and peripheral circuits, a storage unit 21 including an electrically rewritable nonvolatile memory, and a communication interface. The communication unit 22 is made up of.

  Further, the control device 2 includes a recommended operation determining unit 23, a control unit 24, and a control level changing unit 25 as functional modules realized by the microcomputer and a computer program executed on the microcomputer. Hereinafter, each part of the control apparatus 2 will be described in detail.

The storage unit 21 stores various programs and parameters for controlling the control device 2. The storage unit 21 also stores an operation identification number indicating the type of operation, a vehicle-mounted device to be operated, a setting item, a reference table indicating a correspondence relationship between a target setting value, and a control level. Here, the control level represents an automatic execution level of the on-vehicle equipment controlled by the control device 2 with respect to an operation recommended by a recommended operation determining unit 23 described later. In the present embodiment, the control level is divided into the following three stages.
・ Control level A (required input required level)
At this control level, driver approval is required to perform the target operation. Therefore, for the operation to be executed, a message asking whether or not to execute the driver or an icon corresponding to such a message is displayed on the display 15 (for example, the operation to be executed is the volume of the audio device 3). In the case of an operation for increasing the volume, the display 15 displays “Do you want to increase the volume of the audio?”). Then, after the presentation, when the driver performs an approval operation through the simple input interface 16 within a certain period, the presented operation is executed by the control device 2. On the other hand, when the driver performs a refusal operation via the simple input interface 16, the presented operation is not executed. The rejection operation was also performed when the driver directly operated the setting item of the on-vehicle device that was the target of the operation, and when a certain period of time had elapsed without the operation via the simple input interface 16 being performed. Shall. However, if it is considered that the driver's driving load is high during the fixed period and there is no room for approval operation, even if the fixed period elapses without the operation through the simple input interface 16, it is rejected. Do not assume that the operation was performed. For example, when the steering angle of the steering wheel is equal to or greater than a certain angle (for example, 30 degrees), or when acceleration or deceleration exceeding a certain value is detected, the rejection operation is not performed. The certain period can be set to 30 seconds or 1 minute, for example.
・ Control level B (approval input omission level)
At this control level, it is assumed that the operation to be executed is automatically executed by the control device 2. However, before the operation is executed, the operation is presented to the driver through the display 15, and it is confirmed that the driver performs the operation. Therefore, a message on the assumption that the operation is executed or an icon corresponding to the message is displayed on the display 15 (for example, an operation to be executed is an operation for increasing the volume of the audio device 3). If there is, the display 15 displays “Increase audio volume”). Then, after the presentation, when the driver performs an approval operation through the simple input interface 16 within a certain period, the presented operation is executed by the control device 2. Further, even when the refusal operation is not performed through the simple input interface 16 within the certain period, the operation is executed by the control device 2. However, when the driver performs a refusal operation via the simple input interface 16 and when the driver directly operates the setting item of the on-vehicle device that is the target of the operation, the presented operation is not executed. The certain period is set shorter than the corresponding period of the control level A, and is set to 10 seconds, for example. This is because the operation corresponding to the control level B is more likely to be performed automatically by the driver than the operation corresponding to the control level A, and therefore the operation is executed earlier.
・ Control level C (automatic execution level)
At this control level, the control device 2 automatically executes the corresponding operation. After the operation is executed, a message indicating the operation content or an icon corresponding to the message is displayed on the display 15 (for example, the operation to be executed is an operation for increasing the volume of the audio device 3). If there is, the display 15 will display "Audio volume increased").

  Further, as will be described later, in order to use the storage unit 21 for determining whether or not to change the control level of each operation, an operation corresponding to the operation identification number is recommended in association with each operation identification number. The driver's response operation history is stored. Similarly, the memory | storage part 21 memorize | stores the log | history of the operation content when a driver directly operates the setting item of the object vehicle mounting apparatus linked | related with an operation identification number. Furthermore, the storage unit 21 also stores sensor information used by the recommended operation determination unit 23 to recommend an operation corresponding to each operation identification number.

  The communication unit 22 communicates with various sensor devices, various vehicle-mounted devices, and the like through the CAN 10, and acquires various sensor information, current state information of each vehicle-mounted device, and the like. Moreover, the communication part 22 transmits the control signal from the control part 25 to a predetermined vehicle mounting apparatus through CAN10.

The recommended operation determination unit 23 estimates a setting appropriate for the driver for each setting item (for example, the volume of the audio device 3 and selection of a device to be used (CD, radio, or tape)) for each on-vehicle device. Then, the recommended operation determining unit 23 presents, to the driver, an operation for correcting the estimated setting to an appropriate setting for a setting item different from the current setting as the recommended operation.
For this purpose, the recommended operation determination unit 23 acquires sensor information from each sensor device. When the sensor information satisfies any predetermined condition, the recommended operation determination unit 23 recommends an operation corresponding to the predetermined condition. For example, when receiving a signal indicating that a raindrop has been detected from the raindrop sensor 11, the recommendation operation determining unit 23 recommends an operation for operating the wiper. Further, the recommended operation determining unit 23 acquires the in-vehicle temperature from the inside air temperature sensor 12, and when the in-vehicle temperature is 26 ° C., the recommended operation determining unit 23 performs the operation for setting the set temperature of the air conditioner 4 to 24 ° C. and the air volume. Two operations are recommended to make the medium level.

  Note that the recommended operation determination unit 23 may determine the recommended operation for each setting item of each vehicle-mounted device using a probability model that outputs the probability of performing a predetermined operation. A Bayesian network can be used as such a probability model. A Bayesian network models the probabilistic causal relationship of multiple events. A Bayesian network is a network represented by an acyclic directed graph in which propagation between nodes is obtained with a conditional probability. For details on the Bayesian network, see Yoichi Motomura, Hirotoshi Iwasaki, “Bayesian Network Technology”, first edition, Denki University Press, July 2006, Kazuo Shigeru et al. July 2006, or supervised by Morio Onoe, “Pattern Identification”, first edition, New Technology Communications, July 2001, etc.

  FIG. 2 shows an example of such a probability model. The probability model 200 is a two-layer Bayesian network having one sensor node 201 and five actuator nodes 202 to 206. The sensor node 201 receives a raindrop detection result from the raindrop sensor 11 as an observation event. The sensor node 201 outputs a probability that a value that can be observed in the observation event occurs (in this embodiment, a probability that a raindrop is detected (True) and a probability that a raindrop is not detected (False)). On the other hand, each of the actuator nodes 202 to 206 receives the probability output from the sensor node 201 as an input, and the probability of executing a predetermined operation on a predetermined vehicle-mounted device (in this embodiment, the wiper is turned on, respectively) , The probability of closing the power window, the probability of turning on the air conditioner 4, the probability of opening the power window, the probability of increasing the volume of the audio device 3).

  The sensor node 201 is associated with a prior probability table 211 regarding the detection result of raindrops. In the example of FIG. 2, the prior probability that a raindrop is detected (True) and the prior probability that no raindrop is detected (False) are both 50%. For example, when the raindrop detection result is unknown due to a failure of the raindrop sensor 11 or the like, the sensor node 201 refers to the prior probability table 211 and outputs values of True = 0.5 and False = 0.5. On the other hand, when a raindrop detection result is obtained from the raindrop sensor 11, the sensor node 201 outputs a probability value corresponding to the detection result (for example, when a raindrop is detected, the sensor node 201 has True = 1, False. Conversely, when no raindrop is detected, the sensor node 201 outputs True = 0 and False = 1).

Each actuator node 202 to 206 is associated with a conditional probability table (hereinafter referred to as CPT) 212 to 216 that defines a conditional probability of executing a predetermined operation with respect to the input probability. Then, each actuator node 202 to 206 refers to the CPT 212 to 216, respectively, and obtains a conditional probability that a predetermined operation is executed in each case where a raindrop is detected and where no raindrop is detected. To output the probability that a predetermined operation will be executed.
Each CPT corresponds to the fact that raindrops are detected (True) and not detected (False) in order from the left side in the horizontal direction. In the vertical direction, in order from the top, the probability that the operation corresponding to the actuator node is executed (True) and the probability that the operation is not executed (False) are shown. For example, it can be seen that the conditional probability that the operation of turning on the wiper is performed in the actuator node 202 when the raindrop is detected is 90% from the CPT 212.

  As an example, calculation of the probability of operating the wiper for the actuator node 202 will be described. Referring to the CPT 212, the conditional probability of operating the wiper (True) and the conditional probability of not operating the wiper (False) corresponding to the case where a raindrop is detected (True) are 90% and 10%, respectively. On the other hand, the conditional probability of operating the wiper (True) and the conditional probability of not operating the wiper (False) corresponding to a case where no raindrop is detected (False) are 50% and 50%, respectively. Therefore, when the actuator node 202 receives the probability value (True = 1, False = 0) corresponding to the detection of the raindrop from the sensor node 201, the actuator node 202 outputs 0.9 as the probability of operating the wiper. To do. On the other hand, when a probability value (True = 0, False = 1) corresponding to the fact that no raindrop is detected from the sensor node 201, the actuator node 202 outputs 0.5 as the probability of operating the wiper. Further, when a probability value (True = 0.5, False = 0.5) corresponding to the case where the raindrop detection result is unknown is received from the sensor node 201, the actuator node 202 sets 0.7 (= 0.9 · 0.9 ·) as the probability of operating the wiper. 0.5 + 0.5 ・ 0.5) is output.

  The recommended operation determination unit 23 uses these probability models to determine the probability of performing a predetermined operation on the vehicle-mounted device related to the acquired information. When the obtained probability is equal to or higher than a predetermined threshold (for example, 0.8), the recommended operation determining unit 23 recommends an operation corresponding to the probability.

  When the recommended operation determining unit 23 determines the recommended operation, the recommended operation determining unit 23 passes an operation identification number corresponding to the operation to the control unit 24.

When acquiring the operation identification number corresponding to the recommended operation from the recommended operation determining unit 23, the control unit 24 refers to the reference table stored in the storage unit 21 and acquires the control level corresponding to the operation identification number. Then, the control unit 24 determines whether the recommended operation is automatically executed or displayed on the display 15 according to the acquired control level.
When the control level of the recommended operation is the control level C (automatic execution level), the control unit 24 refers to the reference table, the vehicle-mounted device to be operated based on the operation identification number, the setting item, and the target Specify the setting value. The control unit 24 is specified by transmitting a control signal via the communication unit 22 and the CAN 10 so that the value of the specified setting item becomes the target setting value for the specified on-vehicle equipment. Automatic control of on-vehicle equipment.

  On the other hand, when the control level of the recommended operation is the control level A (approval input mandatory level) or the control level B (approval input omission level), a message corresponding to the control level is displayed on the display 15. The message is as described above together with the description of the control level. When the condition for executing the recommended operation is satisfied (that is, when the approval operation is performed via the simple input interface 16 or the rejection operation is not performed within a certain period at the control level B), the control unit Similarly to the above, 24 specifies the vehicle-mounted device to be operated and performs control corresponding to the recommended operation.

  The control unit 24 stores the recommended number of times in the storage unit 21 for each operation recommended by the recommended operation determination unit 23. In addition, each time the recommended operation is presented to the driver via the display 15, the control unit 24 identifies whether the recommended operation has been approved or rejected by identifying the recommended operation. The number is stored in the storage unit 21 in association with the number. Further, the control unit 24 automatically performs the operation recommended by the recommended operation determination unit 23, and then returns the operation to the original state within a predetermined period (for example, 1 minute) (hereinafter referred to as a restoration operation). Is performed, the fact that the restoration operation has been performed is stored in the storage unit 21 in association with the operation identification number of the automatically executed recommended operation. The control unit 24 performs the restoration operation when the distance between the vehicle position when the recommendation operation is automatically executed and the vehicle position when the restoration operation is performed is within a predetermined distance (for example, 1 km). The information may be stored in the storage unit 21.

ここで、S_IJは、着目する推薦操作の組Iと、他の推薦操作の組Ｊとの類似度である。操作の組Ｉ、操作の組Ｊは、それぞれ、推薦操作決定部２３により、同時に推薦される一連の操作を含む。例えば、上記のように、内気温センサ１２から取得した車内温度に基づいて、空調装置４の設定温度を２４℃にする操作と、風量を中レベルにする二つの操作が推薦される場合、推薦操作の組には、その二つの操作が含まれる。また、N_I、N_Jは、それぞれ、操作の組I及び操作の組Jに含まれる操作の数である。さらに、Sim_ijは、操作の組Iに含まれる操作iと操作の組Jに含まれる操作jの類似度を示し、例えば、以下の式により算出される。

ここでx_ijは、操作iを推薦するために使用されるセンサ情報と操作jを推薦するために使用されるセンサ情報との類似度（以下、状況の類似度という）を表し、y_ijは、操作iと操作jの関連度を表す。状況の類似度x_ijは、例えば、以下の式により算出される。

ここで，value_ikは、操作iを推薦するために使用されたセンサ情報kの値を表す。同様にvalue_jkは、操作jを推薦するために使用されたセンサ情報kの値を表す。N_kは、操作i及び操作jを推薦するために使用されたセンサ情報の総数を表す。また、value_ik及びvalue_jkの何れか一方が、操作iまたは操作jの推薦に使用されていない場合（例えば、操作iを推薦するために、雨滴センサによる雨滴の検知結果が使用されるものの、操作jを推薦するためには、雨滴センサによる雨滴の検知結果が使用されない場合）、そのセンサ値に関する、（３）式の右辺の指数関数の出力値を0とする。また、σ_kは、センサ情報kに対する正規化係数である。そしてσ_kは、value_ikとvalue_jkが、推薦操作の決定において実質的に同一と考えられる程度であれば、（３）式の右辺の指数関数の出力値が1に近い値となるように設定される。例えば、σ_kは、センサ情報kの分散値などに設定される。（３）式から明らかなように、状況の類似度x_ijは、操作iの推薦に使用されるセンサ情報と操作jの推薦に使用されるセンサ情報の差が小さいほど、すなわち、各操作決定時の状況が似ているほど大きな値となる。
以下，操作iは、雨天時のワイパーの操作であり、操作jは、涼しいときのパワーウィンドウの操作であると仮定して、状況の類似度x_ijの算出について説明する。操作iの推薦には車速と雨滴量が，操作jの推薦には車速と外気温度がセンサ情報として使用されているとする。そして、操作iの推薦時は車速60km/h、外気温度16度、雨滴量2mmであり、操作jの推薦時には車速55km/h、外気温度20度、雨滴量0mmであったとする。この場合、操作iと操作jの推薦に共通して使用されるのは、車速のみであるため、車速に対するσ_kの値が10であれば、x_ijはおおよそ(0.78+0+0)/3≒0.26となる。 The control level changing unit 25 is based on the driver's response to the presented recommended operation, other conditions under which similar operations are executed, and control levels related to other operations executed under similar conditions. 23, the control level corresponding to the recommended operation is changed. Note that when there are a plurality of operations that are recommended at the same time by satisfying a predetermined condition, the control level changing unit 25 sets the control level for all of these operations to the same control level.
Therefore, the control level changing unit 25 obtains a similarity indicating the degree of similarity between the operation of interest and another operation. The similarity is calculated by the following formula, for example.

Here, S _IJ is the degree of similarity between the set of recommended operations I of interest and the set J of other recommended operations. The operation set I and the operation set J each include a series of operations recommended simultaneously by the recommended operation determining unit 23. For example, as described above, when the operation for setting the set temperature of the air conditioner 4 to 24 ° C. and the two operations for setting the air volume to a medium level are recommended based on the in-vehicle temperature acquired from the inside air temperature sensor 12, The set of operations includes the two operations. N _I and N _J are the numbers of operations included in the operation set I and the operation set J, respectively. Furthermore, Sim _ij indicates the similarity between the operation i included in the operation set I and the operation j included in the operation set J, and is calculated by the following equation, for example.

Here, x _ij represents the degree of similarity between the sensor information used to recommend operation i and the sensor information used to recommend operation j (hereinafter referred to as situation similarity), and y _ij represents , Represents the degree of association between operation i and operation j. The situation similarity x _ij is calculated by the following equation, for example.

Here, value _ik represents the value of the sensor information k used for recommending the operation i. Similarly, value _jk represents the value of sensor information k used for recommending operation j. N _k represents the total number of sensor information used for recommending operation i and operation j. In addition, when either one of value _ik and value _jk is not used for recommendation of operation i or operation j (for example, in order to recommend operation i, the detection result of the raindrop by the raindrop sensor is used, In order to recommend the operation j, when the raindrop detection result by the raindrop sensor is not used), the output value of the exponential function on the right side of the equation (3) regarding the sensor value is set to 0. Σ _k is a normalization coefficient for the sensor information k. Σ _k is such that the output value of the exponential function on the right side of equation (3) is close to 1 if value _ik and value _jk are considered to be substantially the same in determining the recommended operation. Is set. For example, σ _k is set to a variance value of the sensor information k. As apparent from the equation (3), the similarity x _{ij of the} situation is determined as the difference between the sensor information used for recommending the operation i and the sensor information used for recommending the operation j is smaller, that is, each operation is determined. The more similar the situation of the time, the larger the value.
Hereinafter, the calculation of the situation similarity x _ij will be described on the assumption that the operation i is a wiper operation in rainy weather, and the operation j is a power window operation when cool. It is assumed that the vehicle speed and the amount of raindrop are used as the sensor information for the recommendation of the operation i, and the vehicle speed and the outside air temperature are used as the sensor information for the recommendation of the operation j. When the operation i is recommended, the vehicle speed is 60 km / h, the outside air temperature is 16 degrees, and the raindrop amount is 2 mm. When the operation j is recommended, the vehicle speed is 55 km / h, the outside air temperature is 20 degrees, and the raindrop amount is 0 mm. In this case, since only the vehicle speed is used in common for the recommendation of the operation i and the operation j, if the value of σ _k with respect to the vehicle speed is 10, x _ij is approximately (0.78 + 0 + 0) / 3 ≒ 0.26.

The sensor information values used to determine the recommended operation are classified into predetermined categories, and the difference between the categories is used as an input value instead of (value _ik -value _jk ) in equation (3). May be. For example, when the value of the sensor information k used for recommendation of the operation i and the value of the sensor information k used for recommendation of the operation j belong to the same category, the input value is 0. Similarly, when those values belong to mutually adjacent sections, the input value is 1. In this case, the value of σ _k is also optimized according to the category, and for example, σ _k = 1 is set. Such classification is also applied when the sensor information is a discrete value. For example, when the current wiper speed is input as the sensor information, one section is assigned for each speed stage. In addition, when information other than a numerical value is used as sensor information, such as ON / OFF of a headlight, for example, a value corresponding to each state is assigned, such as 1 for ON and 0 for OFF.

ここで，C_ijは、推薦操作iと推薦操作jを、同時に実行した共起回数を表す。またN_iは、推薦操作iの実行回数を示す。なお、その実行には、ドライバが推薦操作iまたはjと同様の操作を車両搭載機器を直接操作することにより実行したこと、及び簡易入力インターフェース１６を介して間接的にその推薦操作を実行したことを含む。同時生起確率が高いということは、同じ目的のために使用することが多いことを意味する。そのため、ドライバは同時生起確率が高い操作をまとめて自動実行してほしいと考える可能性が高い。なお、共起したと考える基準として、例えば、時間、距離またはPOIを用いることができる。具体的には、最初の操作が実行されてから1分以内に別の操作が行われると、それらの操作は同時に実行されたと判断される。あるいは、最初の操作が実行された地点から500ｍ以内で別の操作が実行されたり、同じランドマーク近辺で複数の操作が実行された場合、それらの操作は同時に実行されたと判断される。
また、車両搭載機器をカテゴリ分けし、そのカテゴリが同じか異なるかによって関連度を算出してもよい。この場合、例えば、エアコン関連やオーディオ関連、走行系関連といったカテゴリを作成し、推薦操作iと推薦操作jが同カテゴリに属する操作であれば、y_ij=0.8とし、それ以外ではy_ij＝0.1としてもよい。 Further, the degree of association y _ij between the operation i and the operation j is represented by, for example, the simultaneous occurrence probability of the operation i and the operation j, and is calculated by the following equation.

Here, C _ij represents the number of co-occurrence in which the recommendation operation i and the recommendation operation j are executed simultaneously. N _i indicates the number of executions of the recommended operation i. For the execution, the driver performed the same operation as the recommended operation i or j by directly operating the on-vehicle equipment, and the recommended operation was indirectly performed through the simple input interface 16. including. A high co-occurrence probability means that it is often used for the same purpose. Therefore, it is highly likely that the driver wants to automatically execute operations with a high probability of simultaneous occurrence. Note that, for example, time, distance, or POI can be used as a criterion for considering co-occurrence. Specifically, if another operation is performed within one minute after the first operation is performed, it is determined that these operations are performed simultaneously. Alternatively, when another operation is executed within 500 m from the point where the first operation is executed, or when a plurality of operations are executed in the vicinity of the same landmark, it is determined that these operations are executed simultaneously.
Further, the vehicle-mounted equipment may be classified into categories, and the degree of association may be calculated depending on whether the categories are the same or different. In this case, for example, categories such as air conditioner-related, audio-related, and traveling system-related are created, and if recommended operation i and recommended operation j belong to the same category, y _ij = 0.8, otherwise y _ij = 0.1 It is good.

The control level changing unit 25 changes the control level of each operation included in the recommended operation set I based on the similarity S _IJ calculated according to each of the above equations and the driver's response to the presented recommended operation. Judge whether to do. There are the following six types of control level changes.
(i) Change from control level A (required input required level) to B (approved input omitted level)
(ii) Change from control level B (approval input omission level) to C (automatic execution level)
(iii) Change from control level A to C
(iv) Change from control level C to B
(v) Change from control level B to A
(vi) Change from control level C to A

ただし上式において、L_J ^Bは、推薦操作の組Jに含まれる各操作の制御レベルが制御レベルBであれば1、そうでなければ0となる係数を表す。Nは、同時に推薦され得る操作の組の総数を表す。またAns_lは、推薦操作の組Ｉについて，現在から数えてl回前の提示に対するドライバの応答を示し、承認操作が行われていれば1、拒否操作が行われていれば-1、承認操作も拒否操作も行われていなければ0の値を有する。さらに、N_Ansは、推薦操作の組Ｉについて、過去何回までの承認・拒否操作の履歴を参照するかを示す値である。さらに、α₁、β₁は係数であり、Th₁は閾値である。α₁、β₁及びTh₁は、実験結果などに基づいて適切な値に定められる。 First, a case where the control level of the recommended operation set I is changed from A to B will be described. When it is considered that each recommended operation included in the recommended operation set I is recommended to the driver at an appropriate timing, the control level changing unit 25 determines the control level of the recommended operation set I as the driver's approval. Change to control level B where the operation can be omitted. Therefore, the control level changing unit 25 changes the control level of the recommended operation set I to the control level B if the following inequality is satisfied (that is, controls the control level of each operation included in the recommended operation set I). Change to level B).

In the above equation, L _J ^B represents a coefficient that is 1 if the control level of each operation included in the recommended operation set J is control level B, and 0 otherwise. N represents the total number of operation sets that can be recommended simultaneously. In addition, Ans _l indicates the driver's response to the presentation of the recommended operation set I for the first time counted from the present, 1 if the approval operation is performed, -1 if the rejection operation is performed, approval It has a value of 0 if neither an operation nor a reject operation has been performed. Furthermore, N _Ans is a value indicating how many past approval / rejection operation histories are referred to for the recommended operation set I. Further, α ₁ and β ₁ are coefficients, and Th ₁ is a threshold value. α ₁ , β _1, and Th ₁ are set to appropriate values based on experimental results and the like.

For example, α ₁ = 1, β ₁ = 1, Th ₁ = 0.7, and NAns = 5. In this case, if the recommended operation set I is not similar to the other recommended operation sets, the sum of the first term and the second term on the right side of the equation (5) is 0, so the third term ( That is, whether or not to change the control level is determined based only on the response of the driver performed for the recommended operation set I). For example, if the approval operation is performed four times for the latest five presentations and the rejection operation is not performed, the control level of the recommended operation set I is changed from A to B. In addition to the recommended operation set I, there are five recommended operation sets, and among the three recommended operation sets, the control level is B and the similarity degree S to the recommended operation set I is S. _{Let IJ} = 0.8. In this case, with respect to the set I of the recommended operations, the approval operation is performed three times for the latest five presentations and the rejection operation is not performed, or four approval operations and one rejection operation are performed. Is performed, the control level of the recommended operation set I is changed from A to B. Furthermore, it is assumed that all five recommended operation sets other than the recommended operation set I are at the control level B and the similarity S _IJ to the recommended operation set I is 0.8. In this case, with respect to the recommended operation set I, if the number of approval operations exceeds the number of rejection operations even once with respect to the latest five presentations, the control level of the recommended operation set I changes from A to B. And changed. As described above, when the control level of another recommended operation set having a high degree of similarity is B, the control device 2 according to the present embodiment also sets the control level of the recommended operation set I to another recommended operation set. It can be seen that the control level can be changed with a smaller number of approval operations than when the control level is not referred to. Further, in changing the control level, in order to increase the specific gravity of the control level of another recommended operation set similar to the recommended operation set I, the Th ₁ and β ₁ values may be made smaller than the above values. Good.

ただし上式において、L_J ^Cは、推薦操作の組Jに含まれる各操作の制御レベルが制御レベルCであれば1、そうでなければ0となる係数を表す。N、Ans_l及びN_Ansは、（５）式と同様に、それぞれ、推薦操作の組の総数、現在から数えてl回前の提示に対するドライバの応答、及び推薦操作の組Ｉについて、過去何回までの承認・拒否操作の履歴を参照するかを示す値である。さらに、α₂、β₂は係数であり、Th₂は閾値である。α₂、β₂及びTh₂は、実験結果などに基づいて適切な値に定められる。 Next, a case where the control level of the recommended operation set I is changed from B to C will be described. When it is considered that there is no driver dissatisfaction with the recommended operation set I that is automatically executed without the driver's approval operation, the control level changing unit 25 does not confirm the control level of the recommended operation set I with the driver. Change to control level C, which is automatically executed. Therefore, if the following inequality is satisfied, the control level changing unit 25 changes the control level of the recommended operation set I to the control level C (that is, controls the control level of each operation included in the recommended operation set I). Change to level C).

In the above formula, L _J ^C represents a coefficient that is 1 if the control level of each operation included in the recommended operation set J is control level C, and 0 otherwise. N, Ans _l, and N _Ans are the same as in formula (5), respectively, regarding the total number of recommended operation sets, the driver's response to the presentation l times before counting from the present, and the recommended operation set I. This value indicates whether to refer to the history of approval / rejection operations up to the first time. Further, α ₂ and β ₂ are coefficients, and Th ₂ is a threshold value. α ₂ , β ₂ and Th ₂ are set to appropriate values based on experimental results and the like.

As is clear from the equation (6), like the change from the control level A to B, if there is no operation similar to the recommended operation set I, the control level changing unit 25 presents the recommended operation set I. It is determined whether or not to change the control level based on the response operation of the driver. If there is another recommended operation set similar to the recommended operation set I, the control level changing unit 25 also refers to the control level of the other recommended operation set and controls the recommended operation set I. Determine whether to change the level. At the control level C, the corresponding recommended operation is automatically executed regardless of the approval operation and the rejection operation by the driver. Therefore, it is preferable that the value of the threshold Th ₂ is larger than the threshold Th ₁ so that the change to the control level C is performed more carefully than the change to the control level B.

例えば、閾値Th₂が0.8のとき、閾値Th₃を0.9とすることができる。 Further, when the control level of the recommended operation set I is changed directly from A to C, the control level changing unit 25 may request that a stricter condition is satisfied than when the control level is changed from B to C. preferable. When the control level of the recommended operation set I is directly changed from A to C, each recommended operation included in the recommended operation set I is automatically executed without a driver's approval. This is because the driver may be confused. For example, the control level changing unit 25 in the above (6), instead of the threshold Th _2, according to the threshold Th ₃ and the following formula having a value higher than the threshold Th _2, the recommendation operations of the set I It is determined whether or not to change the control level.

For example, when the threshold Th ₂ is 0.8, the threshold Th ₃ can be set to 0.9.

ただし上式において、RS_J ^Cは、推薦操作の組Jに対して制御レベルをＣからＢに移行する提案が受理されていれば1、そうでなければ0となる係数を表す。なお、RS_J ^Cの値は、推薦操作の組Jの制御レベルがＣからＢへ移行された後、再度他の制御レベルへ移行した時点で0となる。Nは、推薦操作の組の総数を表す。またUndo_lは、推薦操作の組Iについて、現在から数えてl回前の自動実行に対してドライバが復元操作を行ったか否かを示し、推薦操作の組Iに含まれる何れかの推薦操作に対して復元操作が行われていれば1、復元操作が行われていなければ-1の値を有する。さらに、N_cは、推薦操作の組Ｉについて、過去何回までの自動実行に対する復元操作の履歴を参照するかを示す値である。さらに、α₃、β₃は係数であり、Th₄は閾値である。α₃、β₃及びTh₄は、実験結果などに基づいて適切な値に定められる。例えば、α₃=β₃=1、Th₄=0.7とすることができる。
（８）式から明らかなように、制御レベルＡからＢ、ＢからＣへの変更と同様に、推薦操作の組Iと類似する操作がなければ、制御レベル変更部２５は、当該推薦操作の組Iの自動実行に対するドライバの復元操作の頻度に基づいて、制御レベルを変更するか否かを判定する。また、当該推薦操作の組Iと類似する他の推薦操作の組があれば、制御レベル変更部２５は、他の推薦操作の組に対してなされた制御レベル変更の情報も参照して、当該推薦操作の組Iの制御レベルを変更するか否かを判定する。また、制御レベルの変更において、当該推薦操作の組Iと類似する他の推薦操作の組の制御レベルの比重を高くするために、Th₄及びβ₃の値を上記の値より小さくしてもよい。 Next, a case where the control level is changed from C to B will be described. The control level changing unit 25, when the recommended operation automatically executed is considered inappropriate for the driver, the control level of the recommended operation is executed after a certain period of time without requiring the driver's approval operation. To control level B. In this case, if the following inequality is satisfied, the control level changing unit 25 changes the control level of the recommended operation set I to the control level B (that is, controls the control level of each operation included in the recommended operation set I). Change to level B).

However, in the above equation, RS _J ^C represents a coefficient that is 1 if a proposal to shift the control level from C to B is accepted for the set J of recommended operations, and 0 otherwise. The value of RS _J ^C becomes 0 when the control level of the recommended operation set J is shifted from C to B and then shifted to another control level. N represents the total number of recommended operation pairs. In addition, Undo _l indicates whether or not the driver has performed a restoration operation for the automatic execution of the previous operation I for the recommended operation set I, and any recommended operation included in the recommended operation set I. The value is 1 if a restoration operation has been performed for, and -1 if no restoration operation has been performed. Further, N _c is a value indicating the number of past automatic executions of the restoration operation history for the recommended operation set I. Further, α ₃ and β ₃ are coefficients, and Th ₄ is a threshold value. α ₃ , β _3, and Th ₄ are set to appropriate values based on experimental results and the like. For example, α ₃ = β ₃ = 1 and Th ₄ = 0.7.
As is apparent from the equation (8), like the change from the control level A to B and from B to C, if there is no operation similar to the recommended operation set I, the control level changing unit 25 Whether or not to change the control level is determined based on the frequency of the driver restoration operation for the automatic execution of the set I. If there is another recommended operation set similar to the recommended operation set I, the control level changing unit 25 also refers to the information on the control level change made for the other recommended operation set, and It is determined whether or not to change the control level of the set I of recommended operations. In addition, when changing the control level, the Th ₄ and β ₃ values may be made smaller than the above values in order to increase the specific gravity of the control level of another recommended operation set similar to the recommended operation set I. Good.

ただし上式において、RS_J ^Bは、推薦操作の組Jに対して制御レベルをＣまたはＢからＡに移行する提案が受理されていれば1、そうでなければ0となる係数を表す。N、Ans_l及びN_Ansは、（５）式と同様に、それぞれ、推薦操作の組の総数、現在から数えてl回前の提示に対するドライバの応答、及び推薦操作の組Ｉについて、過去何回までの承認・拒否操作の履歴を参照するかを示す値である。さらに、α₄、β₄は係数であり、Th₅は閾値である。α₄、β₄及びTh₅は、実験結果などに基づいて適切な値に定められる。例えば、α₄=β₄=1、Th₅=0.7とすることができる。 Next, a case where the control level of the recommended operation set I is changed from B to A will be described. When it is considered that the recommended operation set I that is automatically executed without the driver's approval operation is not appropriate for the driver, the control level changing unit 25 automatically sets the control level of the recommended operation set I unless the driver approves it. Change to control level A that is not executed. Therefore, the control level changing unit 25 changes the control level of the recommended operation set I to the control level A if the following inequality is satisfied (that is, controls the control level of each operation included in the recommended operation set I). Change to level A).

However, in the above equation, RS _J ^B represents a coefficient that is 1 if a proposal to shift the control level from C or B to A is accepted for the set J of recommended operations, and 0 otherwise. N, Ans _l, and N _Ans are the same as in formula (5), respectively, regarding the total number of recommended operation sets, the driver's response to the presentation l times before counting from the present, and the recommended operation set I. This value indicates whether to refer to the history of approval / rejection operations up to the first time. Further, α ₄ and β ₄ are coefficients, and Th ₅ is a threshold value. α ₄ , β ₄ and Th ₅ are set to appropriate values based on experimental results and the like. For example, α ₄ = β ₄ = 1 and Th ₅ = 0.7.

ただし上式において、RS_J ^Bは、上記と同様に、推薦操作の組Jに対して制御レベルをＢからＡに移行する提案が受理されていれば1、そうでなければ0となる係数を表す。Nは、推薦操作の組の総数を表す。またUndo_lは、推薦操作の組Iについて、現在から数えてl回前の自動実行に対してドライバが復元操作を行ったか否かを示し、推薦操作の組Iに含まれる何れかの推薦操作に対して復元操作が行われていれば1、復元操作が行われていなければ-1の値を有する。さらに、N_cは、推薦操作の組Ｉについて、過去何回までの自動実行に対する復元操作の履歴を参照するかを示す値である。さらに、α₅、β₅は係数であり、Th₆は閾値である。α₅、β₅及びTh₆は、実験結果などに基づいて適切な値に定められる。例えば、α₅=β₅=1、Th₆=0.8とすることができる。 Finally, a case where the control level of the recommended operation set I is directly returned from C to A will be described. In this case, if the following inequality is satisfied, the control level changing unit 25 changes the control level of the recommended operation set I from the control level C to A (that is, the control level of each operation included in the recommended operation set I). To control level C).

However, in the above equation, RS _J ^B is a coefficient that is 1 if the proposal to shift the control level from B to A is accepted for the recommended operation set J, and 0 otherwise. To express. N represents the total number of recommended operation pairs. In addition, Undo _l indicates whether or not the driver has performed a restoration operation for the automatic execution of the previous operation I for the recommended operation set I, and any recommended operation included in the recommended operation set I. The value is 1 if a restoration operation has been performed for, and -1 if no restoration operation has been performed. Further, N _c is a value indicating the number of past automatic executions of the restoration operation history for the recommended operation set I. Further, α ₅ and β ₅ are coefficients, and Th ₆ is a threshold value. α ₅ , β _5, and Th ₆ are set to appropriate values based on experimental results and the like. For example, α ₅ = β ₅ = 1 and Th ₆ = 0.8.

The control level changing unit 25 confirms whether or not to change the control level to the driver when any of the above-described changing conditions is satisfied for the control level of the recommended recommendation set I. For this purpose, the control level changing unit 25 displays, for example, the following message on the display 15.
・ When moving to control level A:
“Do you want to enter approval input mandatory mode?” Or “Do you want to enter rejection input omission mode?”
・ When moving to control level B:
“Do you want to enter approval input omission mode?” Or “Do you want to enter rejection input mandatory mode?”
・ When moving to control level C:
"Do you want to auto run mode?"
Further, when the control level is shifted from C to B or A (that is, when automatic execution is canceled), the control level changing unit 25 may display the following message.
• Shift control level from C to B: “Do you want to cancel automatic execution mode and enter approval input mandatory mode? / Cancel automatic execution mode and enter rejection input omission mode?”
• Shift control level from C to A: “Do you want to cancel automatic execution mode and enter approval input mandatory mode? / Cancel automatic execution mode and enter approval input omission mode?”

Furthermore, as a timing for confirming the control level change, it should be easy to understand for which operation the driver is confirmed. Therefore, the control level changing unit 25 performs the confirmation at the following timing, for example.
(A) When the recommended operation group does not include an operation for turning off the ignition key. When the control level is shifted from A to B or C:
In this case, a confirmation message about the change of the control level is displayed after the driver performs the approval operation for the presentation of the recommended operation set I and the control of the on-vehicle equipment to be controlled is completed. .
• When shifting the control level from B to C:
In this case, a confirmation message about the change of the control level is displayed after the driver does not perform the refusal operation for the presentation of the recommended operation set I and the control of the on-vehicle devices to be controlled is completed. Is done.
-When shifting the control level from C to B or A:
In this case, a confirmation message about the change of the control level is displayed immediately after the driver automatically restores the automatically executed operation.
• When shifting the control level from B to A:
In this case, immediately after the driver performs a refusal operation for the presentation of the recommended operation set I, or when the condition for recommending the recommended operation set I is satisfied, the control corresponding to the recommended operation is performed. Without confirmation, a confirmation message about the change of the control level is displayed.
(B) When the recommended operation group includes an operation for turning off the ignition key. When the control level is shifted from A to B or C:
In this case, when the driver performs an approval operation for the presentation of the set I of recommended operations, the control of all the vehicle-mounted devices to be controlled is completed, and an operation to turn on the ignition key next time is detected. A confirmation message about the control level change is displayed.
• When shifting the control level from B to C:
In this case, in response to the presentation of the set I of recommended operations, the driver does not perform the refusal operation, the control of all the on-vehicle devices to be controlled is finished, and the operation to turn on the next ignition key is detected. A confirmation message about the control level change is displayed.
-When shifting the control level from C to B or A:
In this case, a confirmation message about the change of the control level is displayed immediately after the driver automatically restores the automatically executed operation.
• When shifting the control level from B to A:
In this case, immediately after the driver performs a refusal operation for the presentation of the recommended operation set I, or when the condition for recommending the recommended operation set I is satisfied, the control corresponding to the recommended operation is performed. Without confirmation, a confirmation message about the change of the control level is displayed.

The control level changing unit 25 represents a set of recommended operations to change the control level together with the above message so that the driver can easily understand which recommended operation the control level is to be changed. A message or icon may be displayed.
The control level changing unit 25 changes the control level of the corresponding recommended operation set I when the approval operation is performed via the simple input interface 16 within a predetermined period after the above message is displayed. Then, the control level changing unit 25 stores the approval of the change in the control level in the storage unit 21 in association with the corresponding operation identification number.

Next, the operation procedure of the control device 2 according to the present invention will be described using the flowchart shown in FIG. The following processing procedure is controlled by the control unit 24 of the control device 2.
First, the control device 2 acquires sensor information about the vehicle, such as the current position of the vehicle, the vehicle speed, and the like, the presence / absence of raindrops, and the inside air temperature from each sensor device through the CAN 10 (step S101). Then, the recommended operation determining unit 23 of the control device 2 determines a recommended operation based on the sensor information (step S102). When the recommended operation is determined, the control unit 24 determines the control level of the recommended operation with reference to the reference table stored in the storage unit 21 (step S103). When there are a plurality of operations recommended in step S102 (that is, when recommended operations are recommended), a control level is determined for each recommended operation. However, as described above, the same control level is assigned to a series of operations recommended at the same time. Then, the control unit 24 determines whether or not the control level of the recommended operation is the control level A that requires the driver's approval (step S104). If the control level of the recommended operation is A, the control unit 24 displays the recommended operation on the display 15 and presents it to the driver (step S105). Then, it is determined whether or not the driver has approved the recommended operation via the simple input interface 16 (step S106). Further, an index indicating whether or not an approval operation has been performed for the recommended operation is stored in the storage unit 21 in association with the recommended operation. Thereafter, when the driver performs an approval operation for the recommended operation through the simple input interface 16, the control unit 24 executes the recommended operation (step S107). That is, the control unit 24 acquires an operation identification number corresponding to the recommended operation selected and approved through the simple input interface 16 from the recommended operation determining unit 23. And the control part 24 specifies the vehicle mounting apparatus which should be operated based on the operation identification number, its setting item, and a target setting value with reference to the reference table memorize | stored in the memory | storage part 21. FIG. The control unit 24 is specified by transmitting a control signal via the communication unit 22 and the CAN 10 so that the value of the specified setting item becomes the target setting value for the specified on-vehicle equipment. Control onboard equipment.

  If it is determined in step S104 that the control level of the recommended operation is not A, the control unit 24 automatically controls the control level of the recommended operation after a predetermined time has elapsed unless the driver performs a reject operation. It is determined whether or not B (step S108). If the control level of the recommended operation is B, the control unit 24 displays the recommended operation on the display 15 and presents it to the driver (step S109). Thereafter, it is determined whether or not the driver has rejected the recommended operation via the simple input interface 16 (step S110). Then, an index indicating whether or not a rejection operation has been performed for the recommended operation is stored in the storage unit 21 in association with the recommended operation. Thereafter, unless the driver performs a refusal operation for the recommended operation, the control unit 24 executes the recommended operation (step S107). If it is determined in step S108 that the control level of the recommended operation is not B, that is, if the control level of the recommended operation is C, which is the automatic execution level, the control unit 24 executes the recommended operation ( Step S107).

After step S107, when the driver directly operates the vehicle-mounted device, the control unit 24 acquires the operation content from the vehicle-mounted device through the CAN 10 (step S111). Then, the storage unit 21 stores whether or not the restoration operation has been performed in association with the recommended operation executed. Further, when a plurality of operations are performed at the same time, the operation identification numbers corresponding to the performed operations are stored in association with each other in order to calculate the relevance y _ij between the operations in the similarity between the operations described above. Store in the unit 21.

After step S111, when the recommended operation is not approved in step S106, or when the recommended operation is rejected in step S110, the control level changing unit 25 of the control device 2 changes the control level for the recommended operation. It is determined whether or not the condition is satisfied (step S112). Therefore, as described above, the control level changing unit 25 determines whether or not the condition is satisfied based on the response of the driver to the presented recommended operation or the control level of a similar operation. When the condition for changing the control level is satisfied, the control level changing unit 25 displays a message indicating the changed control level on the display 15 (step S113). Then, the control level changing unit 25 determines whether or not the driver has performed an operation for approving the change via the simple input interface 16 (step S114). When the driver performs an operation for approving the change of the control level, the control level changing unit 25 changes the control level of the recommended operation (step S115). Then, the control level changing unit 25 updates the corresponding item in the reference table. Then, the control unit 24 ends the process.
On the other hand, if the control level change condition is not satisfied in step S112, or if the driver does not approve within a certain period of time to change the control level in step S114, the control level of the recommended operation is changed. The process ends without
The control unit 24 repeatedly executes the above processing at a predetermined time interval (for example, every 30 seconds or 1 minute).

As described above, the control device for a vehicle-mounted device according to the present invention automatically determines the setting of the vehicle-mounted device considered to be appropriate based on information on the vehicle itself or information on the situation around the vehicle. To do. The control device determines whether an operation for setting the vehicle-mounted device is automatically executed according to the control level or presented to the driver for approval. When the driver approves the operation or the control level corresponding to the operation is the automatic execution level, the control device controls the on-vehicle equipment so that the setting is achieved. And this control apparatus is comparatively few by changing the control level corresponding to the control shown or automatically performed based on the control level regarding similar operation as well as the response of the driver to the presented operation. The conditions for automatically controlling the on-vehicle equipment can be optimized by the operation.
Further, this control device divides the control level into three levels. In principle, the driver rejects the operation recommended by the recommended operation determination unit 23 from the control level executed after the driver approves. Unless the control is performed, the control level is automatically executed after a lapse of a predetermined time, and then the control level is automatically executed. Therefore, it is possible to prevent the driver from being confused because the control level has been changed so that the recommended operation performed after the approval operation is suddenly automatically performed.

In addition, this invention is not limited to said embodiment. For example, when the recommended operation determining unit 23 determines a recommended operation using a probability model, the control device 2 preferably further includes a learning unit for correcting the probability model according to the preference of the driver.
In this case, the learning unit is implemented as a functional module realized by a program that operates on the microcomputer of the control device 2 in the same manner as the recommended operation determination unit. When the driver performs an approval operation for the recommended operation of interest, the learning unit corrects the CPT of the actuator node corresponding to the operation so that the operation is easily recommended (for example, as illustrated in FIG. 2). In the probabilistic model, the value of the True term in the CPT of the actuator node corresponding to the operation being performed is increased and the value of the False term is decreased). On the other hand, if the driver performs a rejection operation for the recommended operation of interest, the learning unit corrects the CPT of the actuator node corresponding to the operation so that the operation is difficult to be recommended (for example, as shown in FIG. 2). In the stochastic model, the value of the True term in the CPT of the actuator node corresponding to the operation to be performed is decreased and the value of the False term is increased).

（１１）式における各変数及び各係数の意味は、（５）式と同様である。そして、B_I1、B_I2の何れか一方でも条件を満たせば、制御レベル変更部２５は、推薦操作の組Iの制御レベルを変更する。
また、上記の（５）〜（１１）式において、推薦操作の組の総数Nの代わりに、着目する推薦操作の組Iとその他の推薦操作の組との類似度の合計ΣS_IJを使用してもよい。この場合、推薦操作の組Iとの類似度に応じて他の推薦操作の組の制御レベルが考慮される。したがって、推薦され得る操作の組が多数存在する場合でも、着目する推薦操作の組の制御レベルに、類似度の高い他の推薦操作の組の制御レベルを適切に反映させることができる。なお、この場合、類似度の合計ΣS_IJが0となり得る。そこで、ΣS_IJが0の場合には、類似度の合計を指数項に含む指数関数の出力値を1とする。
さらに、制御レベル変更部２５は、上記の（５）式のうち、第１項（すなわち、'1'）と第２項（指数関数の項）を、以下のように置き換えてもよい。

（６）式〜（１１）式についても、同様に置換することができる。
さらにまた、操作の組Iに含まれる操作iと操作の組Jに含まれる操作jの類似度Sim_ijを、単にセンサ情報間の類似度x_ijとしてもよい（すなわち、Sim_ij=x_ij）。あるいは、類似度Sim_ijを、単に操作iとjの関連度y_ijとしてもよい（すなわち、Sim_ij=y_ij）。 Further, the control level changing unit 25 may separately perform the control level change determination based on the driver's response operation with respect to the presentation of the recommended operation and the control level change determination based on another similar recommended operation. For example, in the determination for shifting the control level of the recommended operation set I of interest from A to B, the following equation can be used instead of the above equation (5).

The meaning of each variable and each coefficient in equation (11) is the same as in equation (5). If either one of B _I1 and B _I2 satisfies the condition, the control level changing unit 25 changes the control level of the set I of recommended operations.
Further, in the above formulas (5) to (11), instead of the total number N of recommended operation sets, the total ΣS _IJ of the similarity between the recommended operation set I and other recommended operation sets is used. May be. In this case, the control levels of other recommended operation groups are considered according to the similarity to the recommended operation group I. Therefore, even when there are a large number of recommended operation sets, the control level of another recommended operation set having a high degree of similarity can be appropriately reflected in the control level of the recommended recommended operation set. In this case, the sum ΣS _{IJ of} similarities can be zero. Therefore, when ΣS _IJ is 0, the output value of the exponential function including the total similarity in the exponent term is set to 1.
Further, the control level changing unit 25 may replace the first term (that is, '1') and the second term (exponential function term) in the above equation (5) as follows.

The formulas (6) to (11) can be similarly substituted.
Furthermore, the similarity Sim _ij between the operation i included in the operation set I and the operation j included in the operation set J may be simply used as the similarity x _ij between the sensor information (that is, Sim _ij = x _ij ). . Alternatively, the similarity Sim _ij may be simply set as the relevance y _ij between the operations i and j (that is, Sim _ij = y _ij ).

Furthermore, the control level changing unit 25 may change the control level of the recommended operation of interest based on another concept. An example is shown below. The driver wants to change the control level of the recommended operation to a level that is executed more automatically when the driver confirms the content of the recommended operation and decides that there is no need to reject it. It is thought that. They can be judged from the easy understanding of the recommended operation and the response operation to the recommended operation of the driver. Therefore, instead of the similarity between recommended operations, a value obtained by quantifying the ease of understanding the content of the recommended operation is used. This easy-to-understand index is calculated by the following parameters.
-Number of on-board equipment that is the target of operation in the set of recommended operations at the same time-Frequency of operation by the driver of the on-board equipment that is the target of operation in the set of simultaneously recommended operations

ここで、N_Iは推薦された操作の組Iで操作対象となる車両搭載機器の数を表し、Z_iは推薦された操作の組Iで操作対象となる車両搭載機器のドライバによる操作頻度を表す。操作頻度については、１回の走行当たり１回以上操作すれば１とし、それ以下であれば、操作回数/走行回数として求められる。また、暗い時にヘッドライトをONにする操作など、状況によっては必ず行う操作を１としてもよい。また、σは正規化係数であり、例えば、同時に推薦される操作の組で操作対象となる車両搭載機器の最大数とすることができる。 Ease U _I understand contents of control is defined by the following equation.

Here, N _I is the number of vehicles equipped device a set I of recommended operation as the operation target, Z _i is the operation frequency by the vehicle mounted equipment drivers in the set I of recommended operation be operated To express. The operation frequency is 1 when operated once or more per one travel, and is obtained as the number of operations / the number of travels when it is less than that. Further, depending on the situation, for example, an operation to turn on the headlight when it is dark may be set to 1. Further, σ is a normalization coefficient, and can be, for example, the maximum number of vehicle-mounted devices that are operation targets in a group of operations recommended at the same time.

N=1のとき

ここで、U_I、U_Jは、それぞれ、着目する推薦操作の組I及びその他の同時に推薦され得る操作の組Jの分かり易さの指標であり、上記の（１３）式に基づいて算出される。また、L_J ^Bは、操作の組Jの制御レベルを表し、その制御レベルがＢであれば１、そうでなければ０の値を有する。またAns_lは、推薦操作の組Ｉについて，現在から数えてl回前の提示に対するドライバの応答を示し、承認操作が行われていれば1、拒否操作が行われていれば-1、承認操作も拒否操作も行われていなければ0の値を有する。さらに、N_Ansは、推薦操作の組Ｉについて、過去何回までの承認・拒否操作の履歴を参照するかを示す値である。さらに、α₁、β₁は係数であり、Th₁は閾値である。α₁、β₁及びTh₁は、実験結果などに基づいて適切な値に定められる。例えば、α₁=0.5, β₁=0.5, Th₁=0.5, N_Ans=5とする。この場合において、現在制御レベルＢとなっている操作についての分かり易さの平均と、着目する操作の組Ｉの分かり易さが同じであれば、過去５回の推薦操作の組Iの提示に対して３回承認され、拒否なしであれば、その操作の組Iの制御レベルがＢへ移行される。これに対し、着目する操作の組Iの分かり易さが、現在制御レベルＢとなっている操作についての分かり易さの平均よりも複雑であれば、その操作の組Iの制御レベルが変更されるために、より多数の承認操作が必要となる。また、どの操作も制御レベルＢになっていない場合でも、ドライバの応答に関する項（不等式の左辺の第２項）に、分かり易さに関する項（不等式の左辺の第１項）を加えたものが0.5を超えれば、制御レベルはＢに移行される。そのため、最初は分かり易くドライバの好みに合った操作から制御レベルの移行が開始され、制御レベルがＢの操作が増えるにつれて、複雑な操作の制御レベルもＢへ移行され易くなる。さらに、すでに制御レベルがＢとなった操作と比べて分かり易い操作ほど、その制御レベルがＢへ移行され易くなる。 The control level changing unit 25 changes the control level of the operation included in the recommended operation set I of interest, and the current control level of the operations included in the other recommended operation sets and the ease of understanding, and Reference is made to the current control level of the operations included in the operation set I and the intelligibility.
First, when changing the control level in a direction that increases the degree of automation, first automate from the easy-to-understand operation, and if the operation to focus on is easier to understand than the operation that is currently automated, The control level is changed based on the idea that it may be automated.
First, when shifting the control level of the recommended operation group to be focused from A to B, the control level changing unit 25 sets the control level of the operation included in the recommended operation group I to be focused to A if the following conditions are satisfied. Change from B to B. N is the total number of operation sets that can be recommended simultaneously.
When N ≧ 2

When N = 1

Here, U _I and U _J are indicators of the ease of understanding the recommended operation set I of interest and other operation sets J that can be recommended at the same time, and are calculated based on the above equation (13). The L _J ^B represents the control level of the operation set J, and has a value of 1 if the control level is B, and 0 otherwise. In addition, Ans _l indicates the driver's response to the presentation of the recommended operation set I for the first time counted from the present, 1 if the approval operation is performed, -1 if the rejection operation is performed, approval It has a value of 0 if neither an operation nor a reject operation has been performed. Furthermore, N _Ans is a value indicating how many past approval / rejection operation histories are referred to for the recommended operation set I. Further, α ₁ and β ₁ are coefficients, and Th ₁ is a threshold value. α ₁ , β _1, and Th ₁ are set to appropriate values based on experimental results and the like. For example, α ₁ = 0.5, β ₁ = 0.5, Th ₁ = 0.5, and N _Ans = 5. In this case, if the average of the comprehension of the operation at the current control level B is the same as the comprehension of the set I of attention operations, the set I of the recommended operations for the past five times is presented. On the other hand, if it is approved three times and there is no rejection, the control level of the operation set I is shifted to B. On the other hand, if the intelligibility of the operation set I of interest is more complex than the average of the intelligibility of the operation that is currently at the control level B, the control level of the operation set I is changed. Therefore, a larger number of approval operations are required. Further, even when no operation is at control level B, a term relating to the driver's response (second term on the left side of the inequality) and a term relating to easy understanding (the first term on the left side of the inequality) are added. If it exceeds 0.5, the control level is shifted to B. Therefore, at first, the control level shift starts from an operation that is easy to understand and meets the preference of the driver. As the operation of the control level B increases, the control level of the complicated operation also easily shifts to B. Furthermore, an operation that is easier to understand as compared to an operation whose control level has already become B becomes easier to shift to B.

N=1のとき

（１６）式、（１７）式において、U_I、U_Jは、それぞれ、上記と同様に、着目する推薦操作の組I及びその他の同時に推薦され得る操作の組Jの分かり易さの指標である。また、L_J ^Cは、操作の組Jの制御レベルを表し、その制御レベルがＣであれば１、そうでなければ０の値を有する。またAns_lは、推薦操作の組Iについて、現在から数えてl回前の提示に対するドライバの応答を示し、承認操作が行われていれば1、拒否操作が行われていれば-1、承認操作も拒否操作も行われていなければ0の値を有する。N_Ansは、推薦操作の組Ｉについて、過去何回までの承認・拒否操作の履歴を参照するかを示す値である。α₂、β₂は係数であり、Th₂は閾値である。α₂、β₂及びTh₂は、実験結果などに基づいて適切な値に定められる。 Next, when the control level of the focused recommended operation set is shifted from B to C, the control level changing unit 25 sets the control level of the operation included in the focused recommended operation set I if the following condition is satisfied. Change from B to C. N is the total number of operation sets that can be recommended simultaneously.
When N ≧ 2

When N = 1

In the expressions (16) and (17), U _I and U _J are indicators of the ease of understanding of the recommended operation set I of interest and other operation sets J that can be recommended at the same time, as described above. is there. L _J ^C represents the control level of the operation set J, and has a value of 1 if the control level is C, and 0 otherwise. In addition, Ans _l indicates the driver's response to the presentation of the recommended operation set I, counting 1 times before, 1 if the approval operation is performed, -1 if the rejection operation is performed, approval It has a value of 0 if neither an operation nor a reject operation has been performed. N _Ans is a value indicating the number of past approval / rejection operation histories for the recommended operation set I. α ₂ and β ₂ are coefficients, and Th ₂ is a threshold value. α ₂ , β ₂ and Th ₂ are set to appropriate values based on experimental results and the like.

例えば、閾値Th₂が0.8のとき、閾値Th₃を0.9とすることができる。 Further, when the control level of the set I of recommended operations is directly changed from A to C, the control level changing unit 25 uses the threshold value Th ₂ instead of the threshold value Th _{2 in the} above equation (16) or (17). It is determined whether or not to change the control level of the recommended operation set I according to the following equation with the threshold value Th ₃ having a higher value.

For example, when the threshold Th ₂ is 0.8, the threshold Th ₃ can be set to 0.9.

  Next, a case will be described in which the control level of the set of recommended operations of interest is changed in a direction that reduces the degree of automation. For example, if the driver experiences automatic execution of the recommended operation and does not like the automatic execution, or if the driver's preference for the degree of automation changes, Or the case where a driver's favorite operation changes can be considered.

ただし上式において、RS_J ^Cは、推薦操作の組Jに対して制御レベルをＣからＢに移行する提案が受理されていれば1、そうでなければ0となる係数を表す。Nは、推薦操作の組の総数を表す。またUndo_lは、推薦操作の組Iについて、現在から数えてl回前の自動実行に対してドライバが復元操作を行ったか否かを示し、推薦操作の組Iに含まれる何れかの推薦操作に対して復元操作が行われていれば1、復元操作が行われていなければ-1の値を有する。さらに、N_cは、推薦操作の組Ｉについて、過去何回までの自動実行に対する復元操作の履歴を参照するかを示す値である。α₃、β₃は係数であり、Th₄は閾値である。α₃、β₃及びTh₄は、実験結果などに基づいて適切な値に定められる。例えば、α₃=β₃=1、Th₄=0.7とすることができる。
例えば、着目する操作の組以外に同時に推薦され得る操作の組が５個あり、そのうち３個の操作の組について、制御レベルＢへ下げる提案が受理されているとする。この場合において、着目する操作の組の自動実行に対して２回の復元操作が行われると、その制御レベルがＣからＢへ移行される。このように、他の操作の組に関する制御レベル変更履歴を参照することで、着目する操作の組そのものに関するドライバの応答操作のみに基づくよりも、早期かつ適切に制御レベルを変更することができる。 When shifting the control level of the recommended operation group of interest from C to B, the control level changing unit 25 changes the control level of the operation included in the focused recommended operation group I from C to B if the following conditions are satisfied. Change to

However, in the above equation, RS _J ^C represents a coefficient that is 1 if a proposal to shift the control level from C to B is accepted for the set J of recommended operations, and 0 otherwise. N represents the total number of recommended operation pairs. In addition, Undo _l indicates whether or not the driver has performed a restoration operation for the automatic execution of the previous operation I for the recommended operation set I, and any recommended operation included in the recommended operation set I. The value is 1 if a restoration operation has been performed for, and -1 if no restoration operation has been performed. Further, N _c is a value indicating the number of past automatic executions of the restoration operation history for the recommended operation set I. α ₃ and β ₃ are coefficients, and Th ₄ is a threshold value. α ₃ , β _3, and Th ₄ are set to appropriate values based on experimental results and the like. For example, α ₃ = β ₃ = 1 and Th ₄ = 0.7.
For example, it is assumed that there are five operation groups that can be recommended at the same time other than the target operation group, and that a proposal to lower the control level B is accepted for three operation groups. In this case, when two restoration operations are performed for the automatic execution of the set of operations of interest, the control level is shifted from C to B. In this way, by referring to the control level change history relating to another set of operations, the control level can be changed earlier and more appropriately than based on only the response operation of the driver relating to the set of operations of interest.

ただし上式において、RS_J ^Bは、推薦操作の組Jに対して制御レベルをＣまたはＢからＡに移行する提案が受理されていれば1、そうでなければ0となる係数を表す。N、Ans_l及びN_Ansは、それぞれ、推薦操作の組の総数、現在から数えてl回前の提示に対するドライバの応答、及び推薦操作の組Ｉについて、過去何回までの承認・拒否操作の履歴を参照するかを示す値である。さらに、α₄、β₄は係数であり、Th₅は閾値である。α₄、β₄及びTh₅は、実験結果などに基づいて適切な値に定められる。例えば、α₄=β₄=1、Th₅=0.7とすることができる。 Next, a case where the control level of the recommended operation set I is changed from B to A will be described. When it is considered that the recommended operation set I that is automatically executed without the driver's approval operation is not appropriate for the driver, the control level changing unit 25 automatically sets the control level of the recommended operation set I unless the driver approves it. Change to control level A that is not executed. Therefore, the control level changing unit 25 changes the control level of the recommended operation set I to the control level A if the following inequality is satisfied (that is, controls the control level of each operation included in the recommended operation set I). Change to level A).

However, in the above equation, RS _J ^B represents a coefficient that is 1 if a proposal to shift the control level from C or B to A is accepted for the set J of recommended operations, and 0 otherwise. N, Ans _l, and N _Ans are the total number of recommended operation sets, the driver's response to the presentation 1 times before the current count, and the recommended operation set I for the past number of approval / rejection operations. This value indicates whether to refer to the history. Further, α ₄ and β ₄ are coefficients, and Th ₅ is a threshold value. α ₄ , β ₄ and Th ₅ are set to appropriate values based on experimental results and the like. For example, α ₄ = β ₄ = 1 and Th ₅ = 0.7.

ただし上式において、RS_J ^Bは、上記と同様に、推薦操作の組Jに対して制御レベルをＢからＡに移行する提案が受理されていれば1、そうでなければ0となる係数を表す。Nは、推薦操作の組の総数を表す。またUndo_lは、推薦操作の組Iについて、現在から数えてl回前の自動実行に対してドライバが復元操作を行ったか否かを示し、推薦操作の組Iに含まれる何れかの推薦操作に対して復元操作が行われていれば1、復元操作が行われていなければ-1の値を有する。さらに、N_cは、推薦操作の組Ｉについて、過去何回までの自動実行に対する復元操作の履歴を参照するかを示す値である。α₅、β₅は係数であり、Th₆は閾値である。α₅、β₅及びTh₆は、実験結果などに基づいて適切な値に定められる。例えば、α₅=β₅=1、Th₆=0.8とすることができる。 Finally, a case will be described in which the control level of the set of recommended operations of interest is shifted directly from C to A. In this case, the control level changing unit 25 changes the control level of the operation included in the set of recommended operations I of interest from C to A.

However, in the above equation, RS _J ^B is a coefficient that is 1 if the proposal to shift the control level from B to A is accepted for the recommended operation set J, and 0 otherwise. To express. N represents the total number of recommended operation pairs. In addition, Undo _l indicates whether or not the driver has performed a restoration operation for the automatic execution of the previous operation I for the recommended operation set I, and any recommended operation included in the recommended operation set I. The value is 1 if a restoration operation has been performed for, and -1 if no restoration operation has been performed. Further, N _c is a value indicating the number of past automatic executions of the restoration operation history for the recommended operation set I. α ₅ and β ₅ are coefficients, and Th ₆ is a threshold value. α ₅ , β _5, and Th ₆ are set to appropriate values based on experimental results and the like. For example, α ₅ = β ₅ = 1 and Th ₆ = 0.8.

  In addition, if the set of recommended operations includes operations that may be dangerous, such as opening a power window, the operations that may be dangerous are automatically executed without the driver's knowledge. In order to prevent this, it is preferable to limit the control level to only A or A or B for the set of recommended operations.

Furthermore, in the above embodiment, the control level is divided into three stages. However, the number of control levels may be two or more than three. For example, only the control levels A (approval input mandatory level) and B (approval input omission level), the control levels A and C (automatic execution level), or the control levels B and C may be used as control levels. it can. On the other hand, the control levels A to C can be further finely divided. For example, each control level may be further classified according to whether or not the message is notified by voice when a message regarding the recommended operation is displayed on the display 15. Similarly, each control level may be further classified according to whether or not a notification sound is sounded when a message regarding a recommended operation is displayed on the display 15. Further, each control level may be further classified by the content of a message regarding a recommended operation. For example, as described above, when two operations of setting the set temperature of the air conditioner 4 to 24 ° C. and setting the air volume to a medium level are recommended based on the vehicle interior temperature, these individual operations are displayed on the display 15. A control level to be displayed and a name collectively indicating a set of operations recommended at the same time are displayed (for example, when these two operations are collectively referred to as “summer mode”, the display 15 executes “summer mode execution”. It may be divided into control levels). Furthermore, the control level may be divided by combining such presence / absence of voice notification, presence / absence of notification sound, change of display message, and the like. Even when such a large number of control levels are used, the control device according to the present invention is based not only on the response of the driver to the presented operation but also on the control level related to a similar operation, as in the above embodiment. By changing the control level corresponding to the presented or automatically executed control, it is possible to optimize the conditions for automatically controlling the on-vehicle equipment with relatively few operations.
As described above, various modifications can be made within the scope of the present invention.

1 is an overall configuration diagram of a vehicle control system including a control device according to an embodiment of the present invention. It is a figure which shows an example of the probability model used in order to determine recommendation operation. It is a flowchart which shows the operation | movement procedure of the control apparatus which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle control system 2 Control apparatus 3 Audio apparatus 4 Air conditioner 5 Driving support apparatus 6 Body control apparatus 10 Control area network (CAN)
DESCRIPTION OF SYMBOLS 11 Raindrop sensor 12 Internal temperature sensor 13 Vehicle speed sensor 14 Navigation apparatus 15 Display 16 Simple input interface 21 Memory | storage part 22 Communication part 23 Recommended operation determination part 24 Control part 25 Control level change part

Claims (12)

A control device for controlling at least one vehicle-mounted device,
Recommending a first operation for any setting item of the at least one vehicle-mounted device or a second operation for any other setting item of the at least one vehicle-mounted device based on state information about the vehicle A recommended operation determining unit (23);
When the first operation is recommended as the control level for defining the control method related to the operation recommended by the recommended operation determination unit (23), which has a first control level and a second control level different from each other. In addition, when the first operation is executed according to the control level corresponding to the first operation and the second operation is recommended, the first operation is performed according to the control level corresponding to the second operation. A control unit (24) for executing the second operation;
A storage unit (21) for storing control levels corresponding to the first operation and the second operation;
A control level changing unit (25) for changing the control level of the first operation so as to coincide with the control level of the second operation;
A control device comprising:   The first control level is an automatic control level that automatically executes a recommended operation, and the second control level is an approval control level that requires occupant approval before executing the recommended operation. The control device according to claim 1, wherein   When the first operation is recommended by the recommended operation determining unit (23) and the control level of the first operation is the approval-required control level, the control unit (24) has a user interface unit (15, 16. The first operation is executed when an operation for approving the first operation is input via 16) or when the control level of the first operation is the automatic control level. 2. The control device according to 2.   The control level changing unit (25) sets the control level corresponding to the first operation to the second operation when the similarity between the first operation and the second operation is equal to or greater than a predetermined threshold. The control device according to claim 1, wherein the control device matches a corresponding control level.   The similarity is used to recommend the first state information used for recommending the first operation in the state information and the second operation among the state information. The control device according to claim 4, wherein the control device is a degree of similarity of the second state information. The storage unit (21) includes the number of direct operations in which the vehicle-mounted device is directly operated by an occupant, and the number of co-occurrence times in which the first operation and the second operation are simultaneously performed on the vehicle-mounted device. And remember
The control device according to claim 4, wherein the similarity is a ratio between the number of co-occurrence and the number of direct operations. A control method for controlling at least one on-vehicle device,
Recommending a first operation for any setting item of the at least one vehicle-mounted device or a second operation for any other setting item of the at least one vehicle-mounted device based on state information about the vehicle A recommended operation determining step;
The control level for defining the control method related to the first operation and the second operation has a first control level and a second control level which are different from each other, and the first operation and the second operation A control level determining step for determining whether the corresponding control level is the first control level or the second control level;
When the first operation is recommended, the first operation is executed according to a control level corresponding to the first operation, and when the second operation is recommended, the second operation is performed. A control execution step of executing the second operation according to a control level corresponding to the operation;
A control level changing step for changing the control level of the first operation so as to coincide with the control level of the second operation;
A control method comprising:   The first control level is an automatic control level that automatically executes the recommended operation, and the second control level is approved to require occupant approval before performing the recommended operation. The control method according to claim 7, wherein the control level is a control level.   In the control execution step, when the first operation is recommended by the recommended operation determination step, the control level of the first operation is the approval required control level, and the first operation is approved, Alternatively, the control method according to claim 8, wherein the first operation is executed when the control level of the first operation is the automatic control level.   The control level changing step matches the control level of the first operation with the control level of the second operation when the similarity between the first operation and the second operation is equal to or greater than a predetermined threshold. The control method according to any one of claims 7 to 9.   The similarity is used to recommend the first state information used for recommending the first operation in the state information and the second operation among the state information. The control method according to claim 10, wherein the control method is similarity of the second state information. A step of storing the number of direct operations in which the vehicle-mounted device is directly operated by an occupant and the number of co-occurrence times in which the first operation and the second operation are simultaneously performed on the vehicle-mounted device; And
The control method according to claim 10, wherein the similarity is a ratio between the number of co-occurrence and the number of direct operations.

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