WO2014049929A1 - 車両用通信装置 - Google Patents
車両用通信装置 Download PDFInfo
- Publication number
- WO2014049929A1 WO2014049929A1 PCT/JP2013/004671 JP2013004671W WO2014049929A1 WO 2014049929 A1 WO2014049929 A1 WO 2014049929A1 JP 2013004671 W JP2013004671 W JP 2013004671W WO 2014049929 A1 WO2014049929 A1 WO 2014049929A1
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- WIPO (PCT)
- Prior art keywords
- communication terminal
- vehicle
- mobile communication
- operation state
- output timing
- Prior art date
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/005—Moving wireless networks
Definitions
- This disclosure relates to a vehicle communication device.
- Patent Document 1 when an actual state such as a window opening / closing state, a lighting state, and a door locking state of a parked vehicle does not match a predetermined reference state, information indicating that fact is displayed in the data relay station.
- the technique of transmitting to a user's portable terminal via is disclosed. According to this prior art, it is possible to notify a user who has a mobile terminal away from the vehicle of forgetting to operate the vehicle window or door.
- the user since the distance between the vehicle communication device and the mobile communication terminal is significantly shorter than that of the conventional technology, the user is present in the vehicle cabin or in the vicinity of the vehicle. Even when the mobile communication terminal is in communication, there may be a problem that information is transmitted to the mobile communication terminal or a state in which communication is not possible due to fluctuations in the radio wave radio area depending on the surrounding environment. That is, for example, when the user is washing a car, it is assumed that the user does not intentionally lock the door of the vehicle while being in the vicinity of the vehicle. In such a case, the operation of the door locking operation is assumed. If you are notified of forgetting, it will be inconvenient. On the other hand, if the user forgets the operation but does not notify the user that the operation is forgotten, the user-friendliness is deteriorated.
- JP 2006-33777 A (corresponding to US Publication No. 2005/0283286)
- An object of the present invention is to provide a vehicular communication device that can notify a user of forgetting to operate an equipment or an operation state from a mobile communication terminal at an appropriate timing.
- the vehicular communication device includes: a communication line establishment device that establishes a wireless communication line with a mobile communication terminal; and the portable device in which the communication line is established by the communication line establishment device.
- the mobile communication terminal transmits the operation state information indicating the operation state of the equipment of the vehicle to the communication terminal.
- An output timing designation information generating device for generating output timing designation information for designating when the user is away from, and an output timing designation information transmitting device for transmitting the output timing designation information generated by the output timing designation information generating device to the mobile communication terminal With.
- the vehicle communication device transmits the output timing designation information to the mobile communication terminal while the communication line is established, and the mobile communication terminal designates the timing designated by the output timing designation information, that is, “mobile communication terminal”
- the operation state of the equipment is output when “has left the vehicle”. Therefore, the timing when the mobile communication terminal outputs the operation state of the vehicle equipment based on the operation state information, that is, the timing when the mobile communication terminal notifies the user of forgetting to operate the vehicle equipment (operation state), It can be set when the mobile communication terminal is away from the vehicle, that is, when the user who owns the mobile communication terminal is appropriately separated from the vehicle. Accordingly, the operation state of the equipment can be notified to the user at an appropriate timing, and the user can recognize that the operation of the equipment has been forgotten based on the notified operation state.
- FIG. 1 is a functional block diagram schematically showing a configuration of a vehicle communication device and a configuration of a mobile communication terminal according to an embodiment
- FIG. 2 is a diagram illustrating an example of correlation data.
- FIG. 3 is a diagram visually showing an example of a radio wave intensity distribution line, an optimal notification area, an allowable notification area, and a limit area around the vehicle
- FIG. 4 is a front view of a mobile communication terminal that outputs an example of the operation state of the equipment
- FIG. 5 is a flowchart showing an example of control when the correlation data is not corrected
- FIG. 1 is a functional block diagram schematically showing a configuration of a vehicle communication device and a configuration of a mobile communication terminal according to an embodiment
- FIG. 2 is a diagram illustrating an example of correlation data.
- FIG. 3 is a diagram visually showing an example of a radio wave intensity distribution line, an optimal notification area, an allowable notification area, and a limit area around the vehicle
- FIG. 4 is a front view of a mobile communication
- FIG. 6 is a time chart showing an example of the relationship between the operation state of the ACC switch and the door lock actuator and the timing of notifying the operation state of the equipment
- FIG. 7 is a graph for explaining the case of correcting the threshold value of the correlation data.
- FIG. 8A is a graph showing the state before correction when correcting the time axis of the correlation data
- FIG. 8B is a graph showing the state after correction
- FIG. 9 is a flowchart illustrating an example of control when the correlation data is corrected.
- FIG. 10 is a flowchart illustrating an example of control when correcting a new output timing.
- FIG. 11 is a graph showing an example of a state in which the radio wave intensity becomes unstable.
- FIG. 12 is a graph showing an example of the relationship between the threshold when the communication line is forcibly disconnected and the threshold when the communication line is automatically disconnected.
- the vehicle communication device 10 (hereinafter referred to as “communication device 10”) includes, for example, a navigation device mounted on a vehicle and a single dedicated control device.
- the communication device 10 automatically establishes a wireless communication line with a mobile communication terminal existing in the vicinity of the communication device 10 such as the mobile communication terminal 30 brought into the vehicle cabin, or manually by a user. Established by operation. Thereby, the communication apparatus 10 and the portable communication terminal 30 are connected so as to be able to communicate with each other.
- the communication device 10 includes a control unit 11, a wireless communication module 12, a storage unit 13, a position detection unit 14, a time measurement unit 15, and the like.
- the control unit 11 includes a well-known microcomputer having a CPU, a RAM, a ROM, an I / O bus, and the like (not shown).
- the control unit 11 controls the overall operation of the communication device 10 according to a computer program stored in the ROM or the storage unit 13.
- control unit 11 executes a computer program to thereby establish a communication line establishment processing unit 21, an operation state information generation processing unit 22, an operation state information transmission processing unit 23, and an output timing designation information generation processing unit 24 (hereinafter, “ Designated information generation processing unit 24 ”, output timing designation information transmission processing unit 25 (hereinafter referred to as“ designated information transmission processing unit 25 ”), portable communication terminal separation detection processing unit 26 (hereinafter referred to as“ separation detection processing unit ”).
- the correlation data correction processing unit 27 is virtually realized by software.
- the unit 27 may be realized as hardware integrated with the control unit 11.
- the storage unit 13 is configured by a storage medium such as a hard disk drive, a memory card, or a flash memory, and has a storage area for storing various types of information.
- the storage unit 13 includes at least a storage area for storing operation state information described later in detail. Further, the storage unit 13 stores, for example, correlation data RD shown in FIG.
- the correlation data RD is data indicating the correlation between the distance between the communication device 10 and the portable communication terminal 30 and the radio wave intensity of the wireless communication performed between the communication device 10 and the portable communication terminal 30. That is, the radio wave intensity decreases as the distance increases.
- the distance between the communication device 10 and the mobile communication terminal 30 is determined when the user carrying the mobile communication terminal 30 moves away from the vehicle and moves at an average moving speed V in the direction in which the user leaves the vehicle. , The time (elapsed time) that has elapsed since the mobile communication terminal 30 has left the vehicle can be converted.
- the position detection unit 14 includes various sensors such as a well-known geomagnetic sensor, a gyroscope, a vehicle speed sensor, and a GPS receiver (not shown).
- the position detection unit 14 acquires vehicle position information by complementing detection signals input from these sensors.
- the position detection unit 14 outputs the acquired vehicle position information to the control unit 11.
- the control unit 11 executes a so-called navigation process based on the vehicle position information acquired by the position detection unit 14 and a guide route searched by a route search unit (not shown).
- the timer unit 15 includes a timer circuit (not shown) and the like, and executes a timer process based on a timer command signal input from the controller 11.
- the timer unit 15 is set to measure the elapsed time after the control unit 11 detects that “the mobile communication terminal 30 has left the vehicle”.
- the timekeeping unit 15 is set so as to time the time elapsed since at least one of the respective accessories is turned off.
- the timing unit 15 may be configured such that “the ACC switch 221 transits from“ ON ”to“ OFF ”, and the door lock actuator 222 changes from“ the door unlocked ”to“ the door locked ”.
- the timer unit 15 can time a plurality of elapsed times in parallel.
- the communication line establishment processing unit 21 corresponds to a communication line establishment device, and executes a communication line establishment process for establishing a communication line with the mobile communication terminal 30 via the wireless communication module 12.
- the communication line establishment processing unit 21 repeatedly executes this communication line establishment process with a short cycle of, for example, several seconds, and when the mobile communication terminal 30 exists in the vicinity of the communication device 10, the mobile communication terminal 30.
- a communication line is automatically established between the two.
- the communication line establishment processing unit 21 can establish a communication line with the mobile communication terminal 30 when the mobile communication terminal 30 exists inside the radio wave intensity distribution line indicated by the symbol a in FIG. It is.
- the radio wave intensity distribution line a represents the distribution of the radio wave intensity S of wireless communication performed between the communication device 10 and the mobile communication terminal 30.
- the operation state information generation processing unit 22 generates operation state information indicating operation states of various equipment (vehicle equipment) mounted on the vehicle.
- the communication device 10 including the operation state information generation processing unit 22 includes an ACC switch 221 (accessory switch) that controls on / off of a power supply circuit (not shown) via the operation state information generation processing unit 22.
- a door lock actuator 222 that controls locking / unlocking of the door
- a power window actuator 223 that controls opening / closing of the power window of the vehicle
- a hazard lamp actuator 224 that controls on / off of the hazard lamp of the vehicle
- the interior of the vehicle interior Interior light actuator 225 for controlling on / off of the light
- key detection switch 226 that is turned on when the key is inserted into the key insertion port of the engine starter, for example, when the vehicle door is open, and when the vehicle door is open
- Various drive devices such as the door open / close switch 227 and the switch S is, like in-vehicle LAN or the vehicle harness are connected by a so-called deer line.
- the operation state information generation processing unit 22 specifies operation states of various equipments provided in the vehicle based on the operation states of these driving devices and switches, and generates operation state information indicating the specified operation states. For example, if the operation state of the door lock actuator 222 is “the state where the door is unlocked”, operation state information indicating “unlocked state” is generated as the operation state of the door which is the equipment of the vehicle. If it is “locked state”, operation state information indicating “locked state” is generated as the door operation state. Further, for example, when the operation state of the key detection switch 226 is “ON”, the operation state indicating the “key holding state” in which the key is inserted into the insertion slot as the operation state of the engine starter which is the vehicle equipment.
- the operation state information generation processing unit 22 performs various equipment based on the operation state of each actuator and the operation state of the switches. Operation status information of is generated.
- the operation state information generation processing unit 22 repeatedly executes a process of generating operation state information of various equipment at a short cycle of, for example, about several seconds. Then, the operation state information generation processing unit 22 stores the generated operation state information in the storage unit 13. Thereby, the latest operation state information is always stored in the storage unit 13.
- the operation state information transmission processing unit 23 corresponds to an operation state information transmission device, and the operation state information is transmitted to the mobile communication terminal 30 with the communication line established by the communication line establishment processing unit 21 via the wireless communication module 12. Send. In this case, as long as the communication line is established, the operation state information transmission processing unit 23 has a short cycle of, for example, several seconds, or every time the operation state information stored in the storage unit 13 is updated. The operation state information stored in the storage unit 13 at the time, that is, the latest operation state information is transmitted to the mobile communication terminal 30.
- the operation state information transmission processing unit 23 is not the operation state information stored in the storage unit 13 but the operation state information temporarily stored in the ROM or RAM of the control unit 11, that is, in the storage unit 13. The operation state information before being stored may be transmitted to the mobile communication terminal 30.
- the designation information generation processing unit 24 corresponds to an output timing designation information generation device, and is an output timing at which the mobile communication terminal 30 outputs the operation state information received from the communication device 10, in other words, from the mobile communication terminal 30. Output timing designation information for designating notification timing for notifying the user of the operation state of the equipment is generated. In this case, the designation information generation processing unit 24 generates output timing designation information that designates “when the mobile communication terminal 30 leaves the vehicle” as the output timing. Note that “the mobile communication terminal 30 has left the vehicle” is detected by the separation detection processing unit 26 described later in detail.
- the designation information transmission processing unit 25 corresponds to an output timing designation information transmission device. As long as a communication line is established, the designation information transmission processing unit 25 outputs the output timing designation information generated by the designation information generation processing unit 24 at an appropriate transmission timing. The data is transmitted to the mobile communication terminal 30 via the wireless communication module 12.
- the separation detection processing unit 26 corresponds to a detection device, and is realized as a processing unit for detecting “the mobile communication terminal 30 has left the vehicle”.
- the separation detection processing unit 26 basically detects that “the mobile communication terminal 30 has left the vehicle” when the communication line established with the mobile communication terminal 30 is disconnected.
- the control unit 11 is set to forcibly disconnect the communication line based on the correlation data RD. That is, as illustrated in FIG. 2, the control unit 11 performs wireless communication performed between the communication device 10 and the mobile communication terminal 30 as the mobile communication terminal 30 possessed by the user gradually moves away from the vehicle.
- the communication line is set to be forcibly disconnected when the radio wave intensity S of the wireless communication performed between the wireless communication module 12 and the wireless communication module 32 becomes lower than a predetermined threshold K. Yes.
- the threshold value K is an analysis result obtained by analyzing evaluation test data obtained in the past, data indicating a change in radio field intensity of wireless communication performed by the communication device 10 with the mobile communication terminal 30 in the past, or the like. It is good to set based on the analyzed result.
- the output timing designation information generated by the designation information generation processing unit 24 designates “when the mobile communication terminal 30 leaves the vehicle” as the output timing, but “the mobile communication terminal 30 has left the vehicle”. Is detected by the communication device 10, the mobile communication terminal 30 cannot directly grasp “the mobile communication terminal 30 has left the vehicle”. Therefore, the designation information generation processing unit 24 designates additional information indicating that “when the mobile communication terminal 30 leaves the vehicle” is basically “when the communication line is forcibly disconnected”. Attach to information. The designation information generation processing unit 24 attaches additional information indicating that “when the mobile communication terminal 30 is separated from the vehicle” is “when the communication line is automatically disconnected” to the output timing designation information. It is also possible.
- “forcibly” disconnection of the communication line means that sufficient radio wave intensity is secured to maintain the state where the communication line is established in the wireless communication between the communication device 10 and the mobile communication terminal 30. In spite of this, it indicates that the communication device 10 or the mobile communication terminal 30 actively disconnects the communication line. The communication device 10 and the mobile communication terminal 30 determine that the communication line is “forcedly” disconnected when the communication line is disconnected despite sufficient radio wave intensity being secured. On the other hand, if the communication line is “automatically disconnected”, sufficient radio wave intensity cannot be secured to maintain the state in which the communication line is established in the wireless communication between the communication device 10 and the mobile communication terminal 30. This indicates that the communication line between the communication device 10 and the portable communication terminal 30 cannot be established. The communication device 10 and the portable communication terminal 30 determine that the communication line is disconnected “automatically” when the radio wave intensity gradually decreases and the communication line is disconnected.
- the separation detection processing unit 26 determines the radio field intensity of the wireless communication performed between the communication device 10 and the portable communication terminal 30, the position of the vehicle, in other words, the position of the communication device 10 and the position of the portable communication terminal 30. Detecting that “mobile communication terminal 30 has left the vehicle” based on at least one of the actual distance between and the time elapsed since at least one of the vehicle equipment was turned off It is also possible to do.
- the correlation data correction processing unit 27 corrects the correlation data RD stored in the storage unit 13 as will be described in detail later.
- the mobile communication terminal 30 includes a control unit 31, a wireless communication module 32, a storage unit 33, a display output unit 34, a position detection unit 35, and the like.
- the control unit 31 includes a well-known microcomputer having a CPU, a RAM, a ROM, an I / O bus, and the like (not shown).
- the control unit 31 controls the overall operation of the mobile communication terminal 30 according to a computer program stored in the ROM or the storage unit 33.
- the storage unit 33 is configured by a storage medium such as a hard disk drive or a memory card, and has a storage area for storing various types of information.
- the storage unit 33 includes at least a storage area for storing operation state information received from the communication device 10 and a storage area for storing output timing designation information.
- the control unit 31 rewrites the operation state information stored in the storage unit 33 every time the operation state information is received via the wireless communication module 32.
- the storage unit 33 always stores the latest operation state information.
- the communication device 10 corrects the output timing designation information that designates “when the mobile communication terminal 30 leaves the vehicle” as the output timing, and the output timing designation information. If it is, the corrected output timing designation information is transmitted.
- the control unit 31 rewrites the output timing designation information stored in the storage unit 33 every time the output timing designation information is received via the wireless communication module 32.
- the latest output timing designation information is always stored in the storage unit 33.
- the display output unit 34 is composed of, for example, a liquid crystal display or an organic EL display, and displays various information based on a display command signal input from the control unit 31.
- the screen of the display output unit 34 is provided with a touch panel switch configured by a known pressure-sensitive method, electromagnetic induction method, capacitance method, or a combination thereof.
- the display output unit 34 displays the operation state of the equipment of the vehicle based on the operation state information stored in the storage unit 33.
- the timing at which the operation state of the equipment is displayed on the display output unit 34 is designated based on the output timing designation information stored in the storage unit 33.
- the output timing designation information basically designates “when the mobile communication terminal 30 is away from the vehicle” as the output timing, and this “when the mobile communication terminal 30 is away from the vehicle” Based on the additional information, it is indicated that “when the communication line is forcibly disconnected”. Therefore, the display output unit 34 basically displays the operation state of the equipment when the communication line with the communication device 10 is forcibly disconnected.
- the position detection unit 35 includes a well-known GPS receiver (not shown).
- the position detection unit 35 acquires position information of the mobile communication terminal 30 based on the detection signals input from these GPS receivers and outputs the position information to the control unit 31.
- step A1 when a communication line is established with the mobile communication terminal 30 (step A1), the communication device 10 starts operation state information transmission processing (step A2).
- step A2 When the communication device 10 starts the operation state information transmission process, the communication device 10 repeats the transmission of the latest operation state information.
- the mobile communication terminal 30 each time the mobile communication terminal 30 receives the operation state information from the communication device 10, the mobile communication terminal 30 stores the received operation state information in the storage unit 33 and sends a response signal indicating that the operation state information has been received to the communication device 10. Send to.
- step A3 when a communication line is established with the mobile communication terminal 30 (step A1), the communication device 10 executes output timing designation information transmission processing (step A3).
- output timing designation information that designates “when the communication line is forcibly disconnected” is transmitted to the portable communication terminal 30 as “when the portable communication terminal 30 leaves the vehicle”, which is the output timing.
- the transmission process of the output timing designation information may be executed after the communication line is established until the communication line is disconnected, but it is difficult to specify in advance when the communication line is disconnected. Therefore, it is preferable to execute at the earliest possible timing after establishment of the communication line.
- the communication device 10 repeatedly transmits the latest operation state information to the mobile communication terminal 30 until the communication line with the mobile communication terminal 30 is disconnected.
- the mobile communication terminal 30 determines the output timing designated by the output timing designation information stored in the storage unit 33, that is, the communication line in this example.
- the operation state of the equipment is output based on the latest operation state information stored in the storage unit 33 at the forced disconnection timing (step A5).
- the mobile communication terminal 30 basically outputs the operation state of the equipment via the display output unit 34, but the operation of the equipment is performed by voice through a speaker (not shown) included in the mobile communication terminal 30.
- the status may be output.
- the mobile communication terminal 30 may drive a vibrator (not shown) included in the mobile communication terminal 30 to notify the user that the operation state of the equipment has been output by vibration.
- the mobile communication terminal 30 may drive a lamp or LED (not shown) included in the mobile communication terminal 30 to notify the user that the operation state of the equipment has been output by light such as lighting or flashing. .
- the communication device 10 forcibly disconnects the communication line when the radio wave intensity S of wireless communication performed between the communication device 10 and the mobile communication terminal 30 becomes lower than a predetermined threshold value K. Therefore, in this case, as shown in FIG. 2, when the radio wave intensity S becomes lower than the threshold value K, that is, when the distance between the communication device 10 and the portable communication terminal 30 becomes D1, the portable communication terminal. From 30, the operation state of the equipment is notified. Note that it is preferable to appropriately adjust and set the threshold value K so that the communication line is forcibly disconnected while the mobile communication terminal 30 exists in the optimum notification area R1 shown in FIG.
- the distribution of the radio wave intensity S of the wireless communication performed between the communication device 10 and the mobile communication terminal 30 around the vehicle is the optimum notification of the operation state of the equipment. Therefore, the communication line is not necessarily stored in the area R1. Therefore, for example, the communication line may be disconnected at a position outside the area R1 indicated by P1 and P2. Therefore, as described above, the setting for outputting the operation state of the equipment simply at the timing when the communication line is disconnected may cause the communication line to be disconnected at a position outside the optimum notification area R1, so the optimum notification area There is a case where the user cannot be notified of the operation state of the equipment in R1.
- the mobile communication terminal 30 has left the vehicle. It is preferable to adopt a configuration that can detect “the mobile communication terminal 30 has left the vehicle” with higher accuracy instead of detecting “
- the area inside the radio wave intensity distribution line a indicating the distribution of the radio wave intensity S is an area where the establishment of the communication line is maintained, and the area outside the radio wave intensity distribution line a is the communication line. This is a region that is forcibly disconnected. Note that this radio wave distribution line can be set as a boundary line at which the communication line is automatically disconnected. In addition, it is preferable to notify the operation state of the equipment after the user holding the mobile communication terminal 30 leaves the vehicle and moves to some extent in the direction in which the user leaves the vehicle. Therefore, as shown in FIG.
- the ACC switch 221 transitions from the “on state” to the “off state”, and the door opening / closing switch 227 is in the “on state”, that is, the door is in the “open state”. It is assumed that there is a user who possesses the mobile communication terminal 30 after the predetermined time t1 has elapsed and the predetermined time t2 has elapsed after the transition from "OFF" to "CLOSED". It is good to set the area to be used. In this case, the communication device 10 indicates that “the mobile communication terminal 30 has left the vehicle” because the ACC switch 221 is turned off and the door is once opened and then closed (the door is opened and closed). ”Is detected.
- the predetermined time t1 shown in FIG. 6 indicates that when the user carrying the mobile communication terminal 30 moves away from the vehicle and moves at an average moving speed V in the direction in which the user leaves the vehicle, 3 shows an estimated time required to reach the optimum notification area R1 shown in FIG. 3, and this predetermined time t1 is hereinafter referred to as “optimum minimum time t1”.
- the predetermined time t2 is the optimum time shown in FIG. 3 when the user carrying the mobile communication terminal 30 moves away from the vehicle and moves at an average moving speed V in the direction in which the user leaves the vehicle. This indicates an estimated time required to go out from the notification area R1 and reach the outside allowable notification area R2, and hereinafter, the predetermined time t2 is referred to as “optimal maximum time t2.”
- the predetermined time t3 is set when the user holding the mobile communication terminal 30 leaves the vehicle and moves at an average moving speed V in the direction in which the user leaves the vehicle. This indicates the estimated time required to go out from the notification area R2 and reach the outer limit area R3.
- the predetermined time t3 is referred to as “limit time t3”.
- the boundary line b between the permissible notification area R2 and the limit area R3 indicates a limit line in which it is considered effective to add the correction time to the output timing in the output timing correction process described in detail later. That is, if the mobile communication terminal 30 exists inside the boundary line b, it is effective to add the correction time to the output timing, and the mobile communication terminal 30 exists outside the boundary line b. For example, adding the correction time to the output timing is hardly or not effective.
- the control unit 11 corrects the threshold value K to the threshold value k1 so that the distance at which the radio wave intensity s1 is lower than the threshold value matches or approximates the distance D1.
- the communication line is forcibly disconnected when the distance between the communication device 10 and the mobile communication terminal 30 matches or approximates D1.
- the operation state of the equipment can be notified from the mobile communication terminal 30 in the optimum notification area R1.
- the control unit 11 corrects the threshold value K to the threshold value k2 so that the distance at which the radio wave intensity s2 is lower than the threshold value matches or approximates the distance D1.
- the communication line is forcibly disconnected when the distance between the communication device 10 and the mobile communication terminal 30 matches or approximates D1.
- the operation state of the equipment can be notified from the mobile communication terminal 30 in the optimum notification area R1.
- the correction process shown in FIGS. 8A and 8B is a correction process paying attention to the fact that the distance axis shown in FIG. 7 can be converted into a time axis. That is, the distance axis of the correlation data RD shown in FIG. 7 can be converted into a time axis based on the average moving speed V of the user who possesses the mobile communication terminal 30 as shown in FIG. . In this case, the converted time axis indicates an elapsed time after the mobile communication terminal 30 leaves the vehicle.
- the communication device 10 is set to forcibly disconnect the communication line when the elapsed time after the mobile communication terminal 30 starts to leave the vehicle reaches T1.
- the control unit 11 corrects the time axis to extend so that the time T2 coincides with or approximates the time T1.
- the communication line is forced when the elapsed time after the mobile communication terminal 30 leaves the vehicle coincides with or approximates the time T1 that is normally expected.
- the operation state of the equipment can be notified from the mobile communication terminal 30 in the optimum notification area R1.
- the control unit 11 corrects the time-axis scale to be compressed so that the time that is longer than the normal time T1 matches or approximates the time T1.
- the communication line is forced when the elapsed time from the time when the mobile communication terminal 30 leaves the vehicle matches or approximates the time T1 that is normally expected.
- the operation state of the equipment can be notified from the mobile communication terminal 30 in the optimum notification area R1.
- FIG. 9 shows an example of control when the correlation data RD is corrected as described above. That is, the communication device 10 establishes a communication line with the mobile communication terminal 30 (step B1), starts operation state information transmission processing (step B2), and executes output timing designation information transmission processing (step B2). Step B3), monitoring whether the correlation data RD has been corrected.
- the communication device 10 detects that the radio wave intensity is equal to or lower than the threshold value in the corrected correlation data RD when the correlation data RD is corrected (step B4)
- the communication device 10 designates that time as the output timing.
- Output timing designation information is newly generated and transmitted to the mobile communication terminal 30 (step B5). Thereby, the output timing designation information already stored in the mobile communication terminal 30 is corrected to new output timing designation information.
- the mobile communication terminal 30 that has received this output timing designation information immediately operates the equipment operation state based on the newly received corrected output timing designation information, not the output timing designation information already stored in the storage unit 33. Is output (step B6).
- the communication device 10 can correct the new output timing specified by the newly generated output timing specification information based on the elapsed time after the mobile communication terminal 30 leaves the vehicle.
- FIG. 10 shows an example of control when correcting a new output timing.
- step C2 when the ACC switch 221 is turned off and the door is opened / closed (step C1: YES), the communication device 10 starts the timing process by the timing unit 15 (step C2). That is, the time measuring unit 15 measures an elapsed time T after the ACC switch 221 is turned off and the door is opened and closed. In this case, the communication device 10 estimates that the mobile communication terminal 30 has started to move away from the vehicle when the ACC switch 221 is turned off and the door is once opened and then closed. Yes.
- step C3 When the communication device 10 detects that the radio wave intensity is equal to or less than the threshold value in the corrected correlation data RD (step C3), the elapsed time T and the optimum minimum time t1 that are counted by the time measuring unit 15 up to that point are determined. Are compared (step C4).
- This step C3 corresponds to step B4 described above.
- step C4 When the elapsed time T is smaller than the optimum minimum time t1 (step C4: YES), the communication device 10 gives the correction time information Ia indicating the correction time Ha for addition together with the new output timing designation information to the mobile communication terminal. 30 (step C5), and this control is terminated.
- the mobile communication terminal 30 that has received the new output timing designation information and the correction time information Ia changes the operation state of the equipment at a timing obtained by adding the correction time Ha to the corrected output timing designated by the new output timing designation information. Output.
- step C4 If the elapsed time T is equal to or greater than the optimum minimum time t1 (step C4: NO), the communication device 10 compares the elapsed time T with the optimum maximum time t2 (step C6). When the elapsed time T is smaller than the optimum maximum time t2, that is, when the elapsed time T is equal to or greater than t1 and less than the optimum maximum time t2 (step C6: YES), the communication device 10 displays the correction time information. This process ends without transmitting to the mobile communication terminal 30.
- step C6 When the elapsed time T is equal to or greater than the optimum maximum time t2 (step C6: NO), the communication device 10 compares the elapsed time T with the limit time t3 (step C7). When the elapsed time T is smaller than the limit time t3, that is, when the elapsed time T is equal to or greater than the optimum maximum time t2 and less than the limit time t3 (step C7: YES), the communication device 10 performs a new output.
- the correction time information Ib indicating the correction time Hb for subtraction is transmitted to the mobile communication terminal 30 together with the timing designation information (step C8), and this process is terminated.
- the mobile communication terminal 30 that has received the new output timing designation information and the correction time information Ib outputs the operation state at a timing obtained by further subtracting the correction time Ha from the corrected output timing designated by the new output timing designation information. If the elapsed time T is equal to or greater than the limit time t3 (step C7: NO), the communication device 10 ends this process without transmitting the correction time information to the mobile communication terminal 30.
- the vehicle communication device 10 transmits the output timing designation information to the mobile communication terminal 30 while the communication line is established, and the mobile communication terminal 30
- the operation state of the equipment is output at the timing designated by the timing designation information, that is, “when the mobile communication terminal 30 leaves the vehicle”. Therefore, the timing when the mobile communication terminal 30 outputs the operation state of the vehicle equipment based on the operation state information, that is, the timing when the mobile communication terminal 30 notifies the user of forgetting to operate the vehicle equipment (operation state). "When the mobile communication terminal 30 is away from the vehicle", that is, when the user holding the mobile communication terminal 30 is appropriately separated from the vehicle.
- the mobile communication terminal 30 possessed by the user can notify the user of the operation state of the equipment at an appropriate timing in the optimal notification area R1, and the user can perform the operation based on the notified operation state. It is possible to grasp whether forgetting to operate the equipment has occurred.
- the communication device 10 basically detects “when the communication line is disconnected” with the mobile communication terminal 30 as “when the mobile communication terminal 30 leaves the vehicle”. As a result, when the user carrying the mobile communication terminal 30 is gradually separated from the vehicle and the communication line is disconnected, the operation state of the equipment is notified. It is possible to notify the user that the user has forgotten the operation at an appropriate timing.
- the communication apparatus 10 further includes at least one of the radio field intensity of wireless communication performed with the mobile communication terminal, the distance between the vehicle and the mobile communication terminal, and the vehicle equipment after being turned off. It is also possible to detect that the mobile communication terminal has left the vehicle based on at least one of the elapsed times. Thereby, “the mobile communication terminal 30 has left the vehicle” can be detected with higher accuracy, and the user can be notified of forgotten operation at a more appropriate timing.
- the communication device 10 transmits the latest operation state information to the portable communication terminal 30 until the communication line is disconnected.
- the latest operation state information is always held in the mobile communication terminal 30, and the mobile communication terminal 30 is disconnected from the latest operation state, that is, the communication line is disconnected, whenever the communication line is disconnected. The user can be notified of the operating state of the equipment at the time.
- this indication is not limited only to one embodiment mentioned above, and can be applied to various embodiments in the range which does not deviate from the gist. It is also possible to combine the various detection processes and correction processes described above.
- the communication device 10 can also detect “the mobile communication terminal 30 has left the vehicle” based on the actual distance between the vehicle (communication device 10) and the mobile communication terminal 30.
- the mobile communication terminal 30 periodically transmits the actual position information of the mobile communication terminal 30 detected by the position detection unit 35 to the communication device 10.
- the communication device 10 determines the distance between the actual position of the communication device 10 detected by the position detection unit 14 and the actual position of the mobile communication terminal 30 based on the position information received from the mobile communication terminal 30. It is good also as a structure which detects that "the mobile communication terminal 30 left
- the radio wave intensity changes more than the amount of change normally assumed according to the distance between the communication device 10 and the mobile communication terminal 30, for example, the user connects the mobile communication terminal 30 to the wireless communication module.
- the communication device 10 may have correlation data RD, a threshold value K, or the like so as to cancel out a change larger than a normally assumed change amount. It is good to set to correct.
- the communication device 10 can also calculate the average value of the radio field intensity and set the correction amount of the threshold value K based on the average value.
- the radio wave intensity s4 may become unstable as shown in FIG. 11, for example.
- the communication apparatus 10 detects the radio wave intensity a plurality of times over a certain long time, and appropriately changes the correction values such as the correlation data RD and the threshold value K. It may be configured.
- the communication device 10 indicates that “the mobile communication terminal 30 has left the vehicle”, for example, that it has received a locking command signal from an electronic key (not shown) that remotely unlocks and locks the door, It is configured to detect based on the fact that the sensor has transitioned from the “on state” to the “off state” and that an intrusion detection sensor (not shown) or an infrared sensor for detecting intrusion into the vehicle is turned on. Also good. That is, “the mobile communication terminal 30 has left the vehicle” can be detected by various configurations using various equipment and sensors mounted on the vehicle.
- the threshold value K set by the communication device 10 may be set to a value larger than the radio wave intensity at which wireless communication is automatically disconnected (the limit intensity that can maintain the communication line).
- the communication device 10 can forcibly disconnect the communication line before the wireless communication line is automatically disconnected, and the mobile communication terminal 30 can be disconnected before the communication line is automatically disconnected.
- the output timing designation information can be reliably transmitted. That is, as shown in FIG. 12, the threshold value K may be set in a range that is larger than the threshold value Z that indicates the radio wave intensity when wireless communication is automatically disconnected.
- the communication device 10 can also be set to detect when the communication line is automatically disconnected as “when the mobile communication terminal 30 leaves the vehicle”.
- the door opening / closing switch 227 may be a switch that is turned off when the vehicle door is open and turned on when the vehicle door is closed. In this case, the waveform of the door opening / closing switch 227 shown in FIG.
- the communication device 10 may be configured to determine “when the communication line is disconnected”, that is, “when the mobile communication terminal 30 is away from the vehicle” based on the reception sensitivity of the radio wave instead of the radio wave intensity. .
- the communication device 10 does not operate until the ACC switch 221 transits from the “on state” to the “off state” and the door opening / closing switch 227 transits from the “on state” to the “off state”. Even if the intensity changes, the change may be ignored and various correction processes may not be executed. That is, even if the ACC switch 221 transitions from the “on state” to the “off state”, the door is not opened or closed until the door opening / closing switch 227 transitions from the “on state” to the “off state”. Therefore, it is estimated that the user who has the mobile communication terminal 30 exists in the vehicle interior.
- the mobile communication terminal 30 is notified of a more appropriate output timing by ignoring the change in the radio field intensity that occurs when the user is uncertain whether or not to leave the vehicle and not performing the correction process. be able to.
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Abstract
Description
この場合、図5に示すように、通信装置10は、携帯通信端末30との間に通信回線が確立されると(ステップA1)、操作状態情報の送信処理を開始する(ステップA2)。通信装置10は、操作状態情報の送信処理を開始すると、最新の操作状態情報の送信を繰り返す。一方、携帯通信端末30は、通信装置10から操作状態情報を受信するごとに、受信した操作状態情報を記憶部33に格納するとともに、操作状態情報を受信したことを示す応答信号を通信装置10に送信する。
図3において電波強度分布線aが示すように、車両の周辺において、通信装置10と携帯通信端末30との間で行われる無線通信の電波強度Sの分布は、装備品の操作状態の最適通知エリアR1内に必ずしも納まるものではなく、従って、例えばP1,P2で示すエリアR1から外れた位置において通信回線が切断される場合も生じ得る。よって、上記のように、単に通信回線が切断されたタイミングで装備品の操作状態を出力する設定では、最適通知エリアR1から外れた位置において通信回線が切断される場合もあるから、最適通知エリアR1内においてユーザに装備品の操作状態を通知できない場合が生じてしまう。そのため、通信回線が切断されたことをもって「携帯通信端末30が車両から離れたこと」を検知することに加えて、あるいは、通信回線が切断されたことをもって「携帯通信端末30が車両から離れたこと」を検知することに代えて、さらに精度良く「携帯通信端末30が車両から離れたこと」を検知できる構成を採用することが好ましい。
Claims (4)
- 携帯通信端末との間に無線の通信回線を確立する通信回線確立装置(21)と、
前記通信回線確立装置によって前記通信回線が確立された前記携帯通信端末に、車両の装備品の操作状態を示す操作状態情報を送信する操作状態情報送信装置(23)と、
前記携帯通信端末が前記操作状態情報を出力する出力タイミングとして、前記携帯通信端末が前記車両から離れたときを指定する出力タイミング指定情報を生成する出力タイミング指定情報生成装置(24)と、
前記出力タイミング指定情報生成装置が生成した前記出力タイミング指定情報を前記携帯通信端末に送信する出力タイミング指定情報送信装置(25)と、
を備える車両用通信装置。 - 前記通信回線が切断されたときを、前記携帯通信端末が前記車両から離れたときとして検知する検知装置(26)を備える請求項1に記載の車両用通信装置。
- 前記検知装置は、
前記携帯通信端末との間で行われる無線通信の電波強度、
前記車両と前記携帯通信端末との間の距離、
前記車両の装備品のうち少なくとも何れか1つがオフされてからの経過時間、
のうち少なくとも何れか1つに基づいて、前記携帯通信端末が前記車両から離れたことを検知する請求項2に記載の車両用通信装置。 - 前記操作状態情報送信装置は、前記通信回線確立装置によって前記携帯通信端末との前記通信回線が確立されると、当該通信回線が切断されるまで、前記携帯通信端末に最新の前記操作状態情報を送信する請求項1から3の何れか1項に記載の車両用通信装置。
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US14/431,330 US9401081B2 (en) | 2012-09-28 | 2013-08-01 | Vehicle communication device |
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