JP2009179998A - On-vehicle device control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle device control system capable of properly controlling a lighting mode according to the distance between a mobile device holder and a vehicle and capable of serving by rendering by light. <P>SOLUTION: This on-vehicle device control system includes a vehicle side unit and a mobile device 1 for performing mutual communication. The mobile device 1 includes: a receiver 1a for receiving radio from the vehicle side unit, a distance sensor 1d for detecting the distance between the vehicle 10 and the mobile device 1., and a transmitter 1b for returning the radio including an ID load and a distance signal. The vehicle side unit includes illuminations 92a-92d, 92e1, 92e2, out-of-cabin transmitters 2a-2e for transmitting radio to the mobile device 1 around the doors 11-15 of the vehicle 10, a receiver 3 for receiving radio from the mobile device 1, and illumination ECU 91 for controlling the illuminating angles of the illuminations 92a-92d, 92e1, 92e2 according to the distance signal included in the received radio when receiving the radio including a normal ID code from the mobile device 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an in-vehicle device control system in which a vehicle-side unit collates an ID code acquired by mutual communication with a portable device, and controls the operation of the in-vehicle device based on the collation result.

Conventionally, as an in-vehicle device control system, for example, as described in Patent Document 1, when a collation result of an ID code by mutual communication between a portable electronic key (mobile device) and a vehicle side unit is OK, a door mirror What turns on the illumination provided in the lower part of is known. Thereby, even at night or the like, it becomes easy to check the situation around the door mirror when the vehicle gets on, and the convenience of the portable device holder can be improved.
JP 2004-225471 A

  However, the system described in Patent Document 1 described above merely turns on the illumination of the door mirrors on both sides when the ID code verification is OK.

  The present invention has been made in view of the above problems, and it is possible to appropriately control the lighting mode according to the distance between the portable device holder and the vehicle, and to control the in-vehicle device that can provide hospitality with light effects. The purpose is to provide a system.

  In order to achieve the above object, an in-vehicle device control system according to claim 1 performs mutual communication in which a portable device returns a radio wave including an ID code in response to a radio wave transmitted from a vehicle-side unit provided in the vehicle. By doing so, the vehicle-side unit receives radio waves from the portable device, collates the ID code included in the received radio waves with a pre-registered registration code, and controls the in-vehicle device according to the collation result. The portable device includes a portable device-side receiver that receives radio waves transmitted from the vehicle-side unit, and a distance detection unit that detects a distance between the vehicle and the portable device and outputs a distance signal indicating the distance. A vehicle-side transmitter that returns radio waves including an ID code and a distance signal, and the vehicle-side unit has a communication area that can transmit radio waves to the portable device around each door of the vehicle. Vehicle-side transmitter, vehicle-side receiver that receives radio waves from a portable device, illumination means provided in the vehicle, and vehicle-side receiver that receives radio waves including an ID code whose collation result is OK from the portable device In this case, the apparatus includes a lighting control unit that controls a lighting mode of the lighting unit in accordance with a distance signal included in the received radio wave.

  With the configuration described above, when the portable device holder approaches the vehicle and enters a communication area formed around each door of the vehicle, mutual communication is performed between the portable device and the vehicle-side unit. At this time, the portable device detects a distance from the vehicle and transmits a radio wave including a distance signal indicating the distance and an ID code. On the other hand, when the vehicle-side unit receives a radio wave including an ID code whose collation result is OK from the portable device, the vehicle-side unit controls the lighting mode of the illumination unit according to the distance signal included in the received radio wave. By doing in this way, the lighting mode of the illumination means can be appropriately controlled according to the distance between the portable device holder and the vehicle. Therefore, when the portable device holder gets on the vehicle, when getting off the vehicle, hospitality can be provided by the effect of light.

  According to a second aspect of the present invention, the distance detecting means includes a radio wave intensity sensor that detects the radio wave intensity of the radio wave from the vehicle unit received by the portable device side receiver, and indicates the radio wave intensity as a distance signal. An intensity signal may be output.

  Usually, the radio wave transmitted from the vehicle-side unit has a higher radio wave intensity as it is closer to the vehicle and weaker as it is farther from the vehicle. Therefore, according to the second aspect, the distance between the vehicle and the portable device can be easily detected.

  According to a third aspect of the present invention, the distance detecting means includes a radio wave intensity sensor that detects the radio wave intensity of the radio wave received from the vehicle unit received by the portable device side receiver, and a map that associates the radio wave intensity and the distance. And calculating means for calculating the distance based on the radio wave intensity and the map.

  Usually, the radio wave transmitted from the vehicle-side unit has a higher radio wave intensity as it is closer to the vehicle and weaker as it is farther from the vehicle. Therefore, the distance can be easily detected from the detected radio wave intensity and the map in which the radio wave intensity is associated with the distance.

  Further, as shown in claim 4, when the vehicle is parked with the doors locked, the lighting control means provides an ID code for which the collation result is OK from the portable device at the vehicle-side receiver. When a radio wave including the signal is received, control may be performed so that the illumination unit is turned on to illuminate the ground direction.

  This is preferable because the feet of the portable device holder can always be illuminated according to the distance between the portable device holder and the vehicle. Moreover, since the step of the portable device holder can always be illuminated in this manner, it is possible to make the vehicle more strongly aware that the portable device holder is greeted.

  Further, as shown in claim 5, when the vehicle-side receiver receives a radio wave including an ID code whose collation result is OK from the portable device, the received radio wave is a radio wave from any vehicle-side transmitter. The lighting control means controls the illumination means provided corresponding to the door corresponding to the vehicle-side transmitter determined by the determination means. Good.

  In this way, from the determination result of the determination means, it is possible to infer which door of the vehicle the portable device holder is near. And a lighting control means lights the illumination means corresponding to the door in which a portable machine holder is considered to be in the vicinity. Accordingly, if the door position toward the portable device holder is different, different illumination means are lit to correspond to the different door positions. That is, when the portable device holder is approaching the door, the position of the lighting means that is turned on changes following the position of the door that the portable device holder is approaching. Therefore, the portable device holder can be more strongly aware that the vehicle is greeting the portable device holder. Furthermore, it is possible to suppress wasteful power consumption by lighting only the illumination means corresponding to the door in the vicinity of the portable device holder.

  Further, the lighting mode controlled according to the distance between the vehicle and the portable device includes a lighting position as shown in claim 6, a lighting color as shown in claim 7, and a lighting brightness as shown in claim 8. Can be adopted. Thus, by controlling the position to illuminate, the color of the illumination, and the brightness of the illumination, it is possible to entertain with a fine effect.

  According to another aspect of the present invention, when the determining unit determines that the received radio wave is a response to radio waves from a plurality of vehicle-side transmitters, the lighting control unit is configured to transmit the plurality of vehicle-side transmitters. You may make it light the some illumination means provided corresponding to the some door corresponding to.

  By doing in this way, even if a portable device holder opens to which door, the hospitality by light can be appropriately performed.

  Moreover, as shown in claim 10, when the lighting control means turns on the plurality of lighting means, the area where the communication areas of the plurality of vehicle-side transmitters corresponding to the door provided with the plurality of lighting means are common. The illumination means may be controlled so as to illuminate the vicinity in a spot manner.

  By doing so, it is possible to make the portable device holder more strongly aware that the vehicle is greeting the portable device holder.

  In addition, as shown in claim 11, the lighting control means controls the illumination means that illuminates the interior of the vehicle as the distance increases when the illumination means illuminates the interior of the vehicle. You may do it. By doing in this way, when the portable device holder gets off the vehicle and moves away from the vehicle, an effect by light can be performed.

  Hereinafter, an in-vehicle device control system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing the overall configuration of the in-vehicle device control system according to the present embodiment.

  The in-vehicle device control system in the present embodiment controls the locked / unlocked state of each door 11 to 15 based on the collation result of the ID code by mutual communication between the portable device (electronic key) 1 and the vehicle side unit. Further, the vehicle-side unit performs smart illumination control that turns on the illumination corresponding to the door in accordance with the door position that the portable device holder is considered to be approaching.

  As shown in FIG. 1, the portable device 1 includes a receiver (portable device-side receiver) 1a that receives request signals (radio waves) from the vehicle interior transmitters 2a to 2e or the vehicle interior transmitter 2f. In response to receiving this request signal, a transmitter (portable device side transmitter) 1b for transmitting a response signal (radio wave) including an ID code or the like is provided. The portable device ECU 1c is connected to the receiver 1a and the transmitter 1b described above, and executes various control processes. Specifically, the portable device ECU 1c determines whether or not the request signal is received based on the reception signal of the receiver 1a, or responds to the request signal by including a ID signal, a distance signal described later, and the like. A signal is generated and transmitted from the transmitter 1b.

Furthermore, the portable device ECU 1c includes a distance sensor (distance detection means) 1d that detects the distance between the vehicle 10 and the portable device 1 and outputs a distance signal indicating the distance. Usually, the radio wave intensity (hereinafter also referred to as LF level _VL ) of the LF radio wave (request signal) received by the receiver 1a becomes stronger as the distance between the vehicle 10 and the portable device 1 becomes narrower. Therefore, a radio wave intensity sensor that detects the radio wave intensity of the radio wave received by the receiver 1a can be employed as the distance sensor 1d. In this case, the distance sensor 1d outputs a radio wave intensity signal indicating the radio wave intensity as a distance signal. Thus, it is preferable to employ the radio wave intensity sensor because the vehicle-side unit can easily provide information for detecting the distance from the portable device 1. Further, as the distance sensor 1d, a radio wave intensity sensor and calculation means for calculating a distance using a map in which the radio wave intensity and the distance (the distance between the vehicle 10 and the portable device 1) are stored in association with each other are employed. You may make it do.

  The vehicle-side unit includes vehicle interior transmitters 2a to 2e provided in the doors 11 to 15 of the vehicle 10 and a vehicle interior transmitter 2f provided in the vehicle interior. The vehicle interior transmitters 2a to 2e and the vehicle interior transmitter 2f transmit a request signal based on a transmission instruction signal from the verification ECU 4 of the vehicle side unit. The door 11 is a driver seat door, the door 12 is a right rear seat door, the door 13 is a passenger seat door, the door 14 is a left rear seat door, and the door 15 is a trunk door. In the present embodiment, a four-door vehicle will be described. However, the present invention is not limited to this and can be applied to other types of vehicles such as a two-door vehicle.

  The arrival distance of the request signals of the vehicle interior transmitters 2a to 2e is set to about 0.7 to 1.0 m, for example. When the vehicle 10 is parked with the doors 11 to 15 being locked, communication areas 21a to 21e corresponding to the reach distance of the request signal are formed around the doors 11 to 15 of the vehicle 10. (See FIG. 2), it is possible to detect that the holder of the portable device 1 has approached the vehicle 10. The communication area by the vehicle interior transmitter 2f is set so as to cover the vehicle interior, and detects whether the portable device 1 is in the vehicle interior. It should be noted that a plurality of vehicle interior transmitters 2f may be provided, and their combined communication area may cover the vehicle interior.

  The vehicle-side unit is provided in the vehicle interior of the vehicle 10 and is in a state in which a response signal can be received in synchronization with the output of transmission instruction signals to the transmitters 2a to 2f. It has the receiver 3 which receives. The response signal received by the receiver 3 is output to the verification ECU 4. The collation ECU 4 collates whether or not the ID code included in the received response signal satisfies a predetermined relationship such as coincidence with a registered code registered in advance. Then, the body ECU 7 and the lighting control device 9 execute control such as door lock / unlock state and smart illumination control based on the collation result.

  In many cases, radio waves transmitted from the vehicle 10 toward the portable device 1 use LF (long wave), and radio waves transmitted from the portable device 1 toward the vehicle use RF (high frequency). This is to adjust the radio wave power from the vehicle in order to prevent the in-vehicle radio waves from leaking out and misidentifying that the mobile device 1 is outside the car, but it can be finely adjusted. This is because LF radio waves.

  The body ECU 7 controls the supply and stop of power to the equipment mounted on the vehicle according to the operation of the engine switch, and locks / unlocks the vehicle doors 11 to 15 according to the collation result in the collation ECU 4. A drive signal for controlling the lock state is output to the lock control units 5a to 5Ee provided in the doors 11 to 15, respectively. When the body ECU 7 supplies power to the vehicle-mounted device, the body ECU 7 drives the relay circuit 8 and supplies power from the battery (not shown) to the vehicle-mounted device via the relay circuit 8. The body ECU 7 receives signals from various sensors such as an engine switch, a brake pedal sensor, and a shift position sensor.

  The lock control parts 5a-5e are provided in each door 11-15 of the vehicle 10, and lock and unlock each door 11-15. Specifically, the lock control units 5a to 5e have a door lock motor that rotates forward / reversely according to a lock signal / unlock signal that is a drive signal transmitted from the body ECU 7, and the rotation of the door lock motor The vehicle doors 11 to 15 are locked or unlocked.

  Touch handles 6a1 to 6e1 are provided on the door handles 6a to 6e of the doors 11 to 15 of the vehicle 10, respectively, and the holder of the portable device 1 touches the door handles 6a to 6e so that the door handles 6a to 6e are touched. It is possible to detect that an operation has been performed on. When an operation on the door handles 6a to 6e is detected, the doors 11 to 15 are unlocked. The door handles 6a to 6d are also provided with door lock switches 6a2 to 6e2 configured as push switches. When the door lock switches 6a2 to 6e2 are operated, the doors 11 to 15 can be locked. Further, the door handles 6a to 6e also serve as antennas for the above-described vehicle interior transmitters 2a to 2e.

  Here, the vehicle interior transmitters 2a to 2e have communication areas 21a to 21e with the portable device 1 around the corresponding doors 11 to 15 as shown in FIG. And in this embodiment, based on the transmission instruction | indication signal from collation ECU4, each exterior vehicle transmitter 2a-2e transmits the request signal containing a specific identification code for every exterior vehicle transmitter 2a-2e, and carries it. The machine 1 is configured to return a response signal including an ID code corresponding to the identification code. Alternatively, the verification ECU 4 may be configured to instruct each of the outside-vehicle transmitters 2a to 2e to sequentially transmit the request signal at a timing shifted in time. In this way, the verification ECU 4 can identify whether the portable device 1 has returned the response signal in response to the request signal from any of the outside transmitters 2a to 2e.

  When the verification ECU 4 receives a response signal indicating that the ID code verification result is OK, the verification ECU 4 outputs information related to the outdoor transmitters 2a to 2e that transmitted the request signal that generated the response signal to the illumination control device 9. The illumination control device 9 executes smart illumination control for turning on the illumination based on information related to the outdoor transmitters 2a to 2e (for example, doors 11 to 15 that are considered to be approaching by the holder of the portable device 1). Turn on the light corresponding to

  As shown in FIG. 2, the illumination control device 9 is based on information on illuminations 92 a to 92 d, 92 e 1, 92 e 2, 93 provided in each part of the vehicle and the outdoor transmitters 2 a to 2 e received from the verification ECU 4. The lighting devices 92a to 92d, 92e1 and 92e2 corresponding to the doors considered to be near the holder of the portable device 1 and the lighting ECU 91 that outputs a drive signal for turning on the room lamp 93 are configured.

  As lighting, the D seat door mirror lower lamp 92a and the P seat door mirror lower lamp 92c provided at the lower part of the driver's seat (D seat) and passenger seat (P seat) door mirrors, and rear vehicles provided at both left and right ends of the rear of the vehicle In addition to using existing lights such as the width lamps 92e1 and 92e2 and the room lamp 93 provided in the passenger compartment, the left and right rear doors may be provided with lamps 92b and 92d.

  However, the existing illuminations are not limited to these, and blinkers, cornering lamps, fog lamps, brake lamps, reverse lights, front width lights, and the like may be used. In this way, by using existing lighting to perform smart illumination control, it is not necessary to newly add a dedicated lamp or the like to the vehicle, so that the product cost can be reduced.

  Next, based on the ID code collation result by the mutual communication between the vehicle-side unit and the portable device 1 described above, the collation ECU 4 and the body ECU 7 unlock the doors 11 to 15 or perform smart illumination control. The process for doing so will be described in detail with reference to FIGS.

  First, the process of the portable device 1 will be described with reference to FIG. The process shown in the flowchart of FIG. 3 is started and executed every predetermined time.

  In step S10, it is determined whether there is an LF trigger. This is to determine whether a request signal (LF radio wave) from the vehicle unit has been received. The portable device ECU 1c determines whether or not the request signal is received by the receiver 1a. When it is determined that the request signal is received, the process proceeds to step S11. When it is determined that the request signal is not received, the portable device ECU 1c Repeat the determination.

  In step S11, the LF radio wave intensity is detected. The portable device ECU 1c detects the radio wave intensity of the LF radio wave (request signal) received by the receiver 1a by the distance sensor 1d. This is for detecting the distance between the portable device 1 and the vehicle 10. The radio wave intensity of the LF radio wave transmitted from the vehicle unit is proportional to the distance between the vehicle 10 and the portable device 1. That is, when the distance between the portable device 1 and the vehicle 10 is short, the radio wave intensity of the LF radio wave transmitted from the vehicle unit is strong, and when the distance between the portable device 1 and the vehicle 10 is long, the radio wave of the LF radio wave transmitted from the vehicle unit. The strength is weak. Therefore, the distance between the portable device 1 and the vehicle 10 can be detected by detecting the radio field intensity of the received LF radio wave. Therefore, the radio wave intensity signal indicating the radio wave intensity detected by the distance sensor 1 c can be a distance signal indicating the distance between the portable device 1 and the vehicle 10.

  Next, in step S12, RF transmission is performed. The portable device ECU 1c causes the transmitter 1b to transmit a response signal (RF radio wave) including the ID code and the radio wave intensity signal (distance signal) detected in step S11.

  Next, the processing of the vehicle unit will be described based on FIGS. The process shown in the flowchart of FIG. 4 is started and executed every predetermined time when the engine of the vehicle 10 is stopped and the doors 11 to 15 are parked. Etc.) That is, the verification ECU 4 instructs the outside transmitters 2a to 2e to transmit request signals every predetermined time when the vehicle is parked, and confirms whether the holder of the portable device 1 has approached the vehicle 10 or not. To do.

  First, in step S20, the verification ECU 4 outputs a transmission instruction signal to the vehicle interior transmitters 2a to 2e and makes a response to the request signals (LF radio waves) transmitted from the vehicle interior transmitters 2a to 2e. It is determined whether or not there is a response signal (RF radio wave). If it is determined that there is a response, the portable device 1 is regarded as being in the communication area of the outside-vehicle transmitters 2a to 2e, and the process proceeds to step S21. If it is determined that there is no response, the portable device 1 transmits outside the vehicle. The determination in step S20 is repeated assuming that the devices 2a to 2e do not exist within the communication area. If there is no response for a predetermined time, the process is stopped.

  More specifically, in step S20, it is determined whether or not the ID code included in the received response signal satisfies a predetermined relationship, for example, whether the ID code matches a previously registered ID code (ID code verification). Result OK / NG judgment). In this determination process, if it is determined that the ID code collation result is OK, it is determined that there is a response, and the process proceeds to step S21. If it is determined that the ID code collation result is NG, it is determined that there is no response, and step S20 is performed. The determination in is repeated.

  In step S20, it is also determined in which communication areas 21a to 21e the mutual communication with the portable device 1 is performed. That is, it is determined whether the portable device 1 has returned the response signal in response to the request signal from any of the outside-vehicle transmitters 2a to 2e (determination means). This is for controlling the lighting devices 92a to 92d, 92e1 and 92e2 provided in correspondence with the doors 11 to 15 corresponding to the discriminated outdoor transmitters 2a to 2e. In other words, the lighting devices 92a to 92d, 92e1 and 92e2 corresponding to the doors 11 to 15 corresponding to the position of the portable device holder are turned on. As a result, the portable device holder can be more strongly aware that the vehicle 10 is greeting the portable device holder. Furthermore, it is preferable because wasteful power consumption can be suppressed.

In step S21, the verification ECU 4 extracts the LF level V _L (radio wave intensity) from the received RF radio wave (response signal). This is to obtain the distance between the vehicle 10 and the portable device 1. In step S22, the verification ECU 4 illuminates the moving portable device holder's feet (in the direction of the ground) with a predetermined function (Y = F (V _L )) with the illuminations 92a to 92d, 92e1, and 92e2. The irradiation angle is determined. As shown in FIG. 5, the predetermined function is to change the irradiation angle Y from 0 ° (when illuminating the distance of the vehicle) to 90 ° (when illuminating the vicinity of the vehicle) as the LF level V _L increases. It is. In the present embodiment, an example in which the verification ECU 4 calculates the irradiation angle is employed, but the illumination ECU 91 may perform the calculation.

  In step S23, the verification ECU 4 turns on the illumination (the illumination 92a in FIGS. 6 to 8) according to the irradiation angle Y. That is, when the verification ECU 4 receives a response signal indicating that the verification result of the ID code is OK together with a signal indicating the irradiation angle, the verification ECU 4 illuminates information on the outdoor transmitters 2a to 2e that transmitted the request signal that generated the response signal. Output to the control device 9. And the lighting control apparatus 9 (lighting ECU91) steps the illumination corresponding to the doors 11-15 considered that the holder | retainer of the portable device 1 is approaching based on the information regarding the transmitters 2a-2e outside the vehicle interior. It is lit at the irradiation angle Y determined in S22. That is, the illumination ECU 91 outputs a drive signal to the illuminations 92a to 92d, 92e1, and 92e2 in accordance with a signal from the verification ECU 4.

  And in step S24, collation ECU4 determines whether the doors 11-15 (door 11 in FIGS. 6-8) opened, and when it determines with the door 11 not opening, it returns to step S20. On the other hand, when it determines with the door 11 having opened, it progresses to step S25 and turns off illumination. Note that whether or not the door is open can be determined by a door courtesy switch (not shown) or the like.

  That is, in the in-vehicle device control system according to the present embodiment, when the portable device 1 enters one of the detection areas 21a to 21e, the doors 11 to 15 corresponding to the detection area are provided after the portable device 1 enters the detection area. Until the door is opened, the lightings 92a to 92d, 92e1, and 92e2 corresponding to the detection areas (doors) are turned on while changing the lighting mode (irradiation angle) according to the distance between the vehicle 10 and the portable device 1. is there.

  Here, an example of the lighting mode will be described with reference to FIGS. 6 to 8 show an example when the portable device holder enters the communication area 21a. That is, an example is shown in which mutual communication with the portable device 1 is performed in the communication area 21a, collation is OK (affirmation determination), and the illumination 92a is turned on. Note that the case where the portable device holder enters the other communication areas 21b to 21e is the same as the case where the portable device holder enters the communication area 21a (explanation using FIGS. 6 to 8). Is omitted.

  When there is a portable device holder at the position A in the communication area 21a, the irradiation area l1 is irradiated with the illumination 92a from the distance between the vehicle 10 and the portable device 1 (mobile device holder) (see FIG. 7). When there is a portable device holder at a position B (a position farther from the vehicle 10 than the position A) in the communication area 21a, an illumination area is illuminated with an illumination 92a from the distance between the vehicle 10 and the portable device 1 (mobile device holder) Irradiate 12 (see FIG. 8). That is, the irradiation angle of the illumination 92a is changed according to the distance between the vehicle 10 and the portable device 1. In other words, the position corresponding to the distance between the vehicle 10 and the portable device 1 is illuminated by the illumination 92a.

  For example, when the portable device holder gets on the vehicle 10, the distance between the vehicle 10 and the portable device 1 gradually decreases, so that the irradiation angle of the illumination 92a gradually increases and the irradiation region ranges from l1 to l2. Will move in the direction. Further, when the portable device holder moves away from the vehicle 10, the distance between the vehicle 10 and the portable device 1 gradually increases, so that the irradiation angle of the illumination 92a gradually decreases and the irradiation region starts from l2. It moves in the l1 direction. By doing so, it is preferable because the feet of the portable device holder can always be illuminated according to the distance between the portable device holder and the vehicle 10. Moreover, since the step of the portable device holder can always be illuminated in this way, the vehicle 10 can be more strongly conscious that the portable device holder is greeted.

  In the above-described example, the illumination angles of the illuminations 92a to 92d, 92e1, and 92e2 are changed according to the distance (distance signal) between the vehicle 10 and the portable device 1 (the position corresponding to the distance is illuminated). ) An example has been described, but the present invention is not limited to this.

  As another example, the colors (illumination colors) of the illuminations 92a to 92d, 92e1, and 92e2 are changed according to the distance (distance signal) between the vehicle 10 and the portable device 1 (for example, the portable device 1 approaches the vehicle 10). (Change from red to blue).

  As yet another example, the brightness (illuminance) of the illuminations 92a to 92d, 92e1, and 92e2 may be changed according to the distance (distance signal) between the vehicle 10 and the portable device 1.

  In addition, the example which changes the above-mentioned irradiation angle, the example which changes a color, and the example which changes a brightness may be implemented independently, and may be implemented in combination as appropriate. Thus, by controlling the position to illuminate, the color of the illumination, and the brightness of the illumination, it is possible to entertain with a fine effect.

  In addition, as shown in FIG. 2, communication areas of adjacent transmitters may be formed so as to partially overlap (communication areas 21a and 21b or communication areas 21c and 21d). When a portable device holder enters the overlapping communication area, the portable device holder may go to any of a plurality of doors (doors 11 and 12 or doors 13 and 14) corresponding to the transmitters. is there. Whether or not there is a portable device holder in the overlapping communication area can be determined by whether the portable device 1 has returned a response signal in response to a request signal from any of the outside transmitters 2a to 2e (discrimination) means).

  Therefore, any illuminations (illuminations 92a and 92b or 92c and 92d) corresponding to a plurality of vehicle doors may be turned on so that the portable device holder may go to any door. By doing in this way, even if a portable device holder opens to which door, the hospitality by light can be appropriately performed.

  In addition, when there are portable device holders in overlapping communication areas, the position of the portable device holder can be specified to some extent, so that it may be illuminated in a spot manner. That is, as shown in FIG. 9, when the portable device holder is in an area where the communication areas 21 a and 21 b overlap, the lighting devices 92 a and 92 b are turned on and the vicinity of the overlapping communication area (the step of the portable device holder) ) Spot light. Although illustration is omitted, when the portable device holder is in an area where the communication areas 21c and 21d overlap, the lighting devices 92c and 92d are turned on to spot the vicinity of the overlapping communication area (the feet of the portable device holder). Illuminate. By doing so, it is possible to make the portable device holder more strongly aware that the vehicle 10 is greeting the portable device holder.

  Note that this example of illuminating the vicinity of the overlapping communication area may be performed alone, or in combination with the above-described example of changing the irradiation angle, the example of changing the color, or the example of changing the brightness as appropriate. Also good.

  Next, processing when the portable device holder gets off the vehicle 10 will be described. The process shown in the flowchart of FIG. 10 is performed when the vehicle 10 is turned off or off and the doors 11 to 15 are opened. Note that the room lamp 93 is turned on when the vehicle 10 is turned off or off and the doors 11 to 15 are opened. Therefore, when the flowchart of FIG. 10 starts, the room lamp 93 is lit.

  In step S30, the verification ECU 4 outputs a transmission instruction signal to the outdoor transmitters 2a to 2e, and whether or not there is a response to the request signals (LF radio waves) transmitted from the outdoor transmitters 2a to 2e. (Whether or not a response signal (RF radio wave) has been received).

  If it is determined that there is a response, the portable device 1 is considered to exist in the communication area of the outside-vehicle transmitters 2a to 2e, and the process proceeds to step S31. If it is determined that there is no response, the portable device 1 transmits outside the vehicle. The determination in step S30 is repeated assuming that the devices 2a to 2e do not exist within the communication area. If there is no response for a predetermined time, the process is stopped.

In step S31, the verification ECU 4 extracts the LF level V _L (radio wave intensity) from the received RF radio wave (response signal). This is to obtain the distance between the vehicle 10 and the portable device 1. In step S32, the verification ECU 4 determines the output W of the room lamp 93 with a predetermined function (W = F (V _L )) to illuminate the vehicle interior. The predetermined function, as shown in FIG. 11, the room lamp output W increases As the LF level V _L becomes strong, like LF level V _L brought in to weaken room lamp output W is reduced It is. That is, the room lamp output W is reduced as the portable device holder moves away from the vehicle. Accordingly, the verification ECU 4 turns on the room lamp 93 according to the determined room lamp output W. In the present embodiment, an example in which the verification ECU 4 calculates the room lamp output W is adopted, but the lighting ECU 91 may perform the calculation.

  In step S33, it is determined whether LF communication is not established. This is for determining whether or not the portable device holder has left the communication areas 21a to 21e. Then, if there is a response signal (RF radio wave) from the portable device 1, the verification ECU 4 determines that LF communication has been established and returns to step S30. On the other hand, if there is no response signal (RF radio wave) from the portable device 1, the verification ECU 4 determines that LF communication is not established and proceeds to step S34. In step S34, the verification ECU 4 turns off the room light 93.

  That is, in the in-vehicle device control system according to the present embodiment, when the portable device holder gets off the vehicle 10, the portable device holder is in accordance with the distance between the vehicle 10 and the portable device 1 until the portable device holder leaves the detection area. The room lamp 93 is turned on while changing the lighting mode (room lamp output). That is, as the distance between the vehicle 10 and the portable device 1 increases, the output of the room lamp 93 is gradually reduced and turned off. By doing in this way, when the portable device holder gets off the vehicle 10 and moves away from the vehicle 10, it is possible to produce an effect by light.

  As described above, by executing the smart illumination control of the present embodiment, it is possible to appropriately control the lighting mode of the illumination unit according to the distance between the portable device holder and the vehicle. Therefore, when the portable device holder gets on the vehicle, when getting off the vehicle, hospitality can be provided by the effect of light.

It is a block diagram which shows the whole structure of the vehicle equipment control system in embodiment of this invention. It is a block diagram which shows the whole structure of the illumination control apparatus in embodiment of this invention. It is a flowchart which shows the process of the portable device in embodiment of this invention. It is a flowchart which shows the process of the vehicle unit in embodiment of this invention. It is a graph which shows the relationship between the irradiation angle of the vehicle equipment control system in embodiment of this invention, and radio field intensity. It is a top view explaining an example of the lighting aspect of the vehicle equipment control system in embodiment of this invention. It is explanatory drawing at the time of seeing the vehicle explaining an example of the lighting aspect of the vehicle equipment control system in embodiment of this invention from back. It is explanatory drawing at the time of seeing the vehicle explaining an example of the lighting aspect of the vehicle equipment control system in embodiment of this invention from back. It is explanatory drawing explaining the other example of the lighting aspect of the vehicle equipment control system in embodiment of this invention. It is a flowchart which shows the process of the vehicle unit in embodiment of this invention. It is a graph which shows the relationship between the room light output of the vehicle equipment control system in an embodiment of the invention, and field intensity.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable machine, 1a receiver, 1b Transmitter, 1c Portable machine ECU, 1d Distance sensor, 2a-2e Out-of-vehicle transmitter, 2f In-vehicle transmitter, 3 Receiver, 4 Collation ECU, 5a-5e Lock control part, 6a to 6e door handle, 6a1 to 6e1 touch sensor, 6a2 to 6e2 lock switch, 7 body ECU, 9 illumination control device, 10 vehicle, 91 illumination ECU, 92a to 92d, 92e1, 92e2, 93 illuminations

Claims (11)

In response to radio waves transmitted from the vehicle-side unit provided in the vehicle, the portable unit receives radio waves from the portable device by performing mutual communication in which the portable device returns radio waves including an ID code. The ID code included in the received radio wave is collated with a registered code registered in advance, and the in-vehicle device is controlled according to the collation result,
The portable device is
A portable device-side receiver that receives radio waves transmitted from the vehicle-side unit;
Distance detecting means for detecting a distance between the vehicle and the portable device and outputting a distance signal indicating the distance;
A portable device-side transmitter that returns radio waves including the ID code and the distance signal;
The vehicle side unit is:
Around each door of the vehicle, a plurality of vehicle-side transmitters having a communication area capable of transmitting the radio wave to the portable device;
A vehicle-side receiver that receives radio waves from the portable device;
Lighting means provided in the vehicle;
When the vehicle-side receiver receives a radio wave including an ID code whose collation result is OK from the portable device, the lighting mode of the illumination unit is controlled according to the distance signal included in the received radio wave. Lighting control means;
An in-vehicle device control system comprising:   The distance detecting means includes a radio wave intensity sensor that detects a radio wave intensity of the radio wave received from the vehicle unit received by the portable device side receiver, and outputs a radio wave intensity signal indicating the radio wave intensity as the distance signal. The in-vehicle device control system according to claim 1.   The distance detecting means includes a radio wave intensity sensor that detects a radio wave intensity of the radio wave from the vehicle-side unit received by the portable device side receiver, a map that associates the radio wave intensity and the distance, and the radio wave intensity. The vehicle-mounted device control system according to claim 1, further comprising: calculating means for calculating the distance based on the map and the map.   When the vehicle is parked with each door locked, the lighting control means receives a radio wave including an ID code whose collation result is OK from the portable device at the vehicle-side receiver. In such a case, the vehicle-mounted device control system according to any one of claims 1 to 3, wherein control is performed so that the illumination unit is lit to illuminate a ground direction.   When the vehicle-side receiver receives from the portable device a radio wave including an ID code whose collation result is OK, the received radio wave is a response to the radio wave from the vehicle-side transmitter. The lighting control means controls the illumination means provided corresponding to the door corresponding to the vehicle-side transmitter determined by the determining means. The in-vehicle device control system according to any one of claims 1 to 4.   6. The in-vehicle device control system according to claim 4 or 5, wherein the lighting control unit controls the illumination unit to illuminate a position corresponding to the distance in accordance with the distance signal.   The in-vehicle device control according to any one of claims 4 to 6, wherein the lighting control unit controls the illumination unit so as to change a color of illumination according to the distance signal. system.   The in-vehicle device according to any one of claims 4 to 7, wherein the lighting control unit controls the lighting unit so as to change the brightness of the lighting in accordance with the distance signal. Control system.   When the determining means determines that the received radio wave is a response to radio waves from the plurality of vehicle-side transmitters, the lighting control means is provided on a plurality of doors corresponding to the plurality of vehicle-side transmitters. The in-vehicle device control system according to any one of claims 4 to 8, wherein a plurality of the illumination units provided correspondingly are turned on.   When the plurality of lighting means are turned on, the lighting control means spot-lights the vicinity of an area where the communication areas of the plurality of vehicle-side transmitters corresponding to the door provided with the plurality of lighting means are common. The in-vehicle device control system according to claim 9, wherein the lighting unit is controlled as described above.   The lighting control unit controls the lighting unit that illuminates the vehicle interior to be extinguished according to the distance as the distance increases when the lighting unit illuminates the vehicle interior. The in-vehicle device control system according to any one of claims 1 to 10, wherein:

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