JP2017204852A - Relay system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable common use of a mobile relay device or vehicle relay device for, e.g., different vehicle types.SOLUTION: A relay system comprises a vehicle relay device 2 capable of communicating with a vehicle controller 1, and a mobile relay device 3 capable of communicating with a mobile device 4. In parameter storage sections 2d, 3f of the mobile relay device and the vehicle relay device, a plurality of parameters on communication that are different dependent on vehicle types are stored in association with the vehicle types. The mobile relay device is provided with a configuration switch 3g. The configuration switch is operated to configure a parameter of communication corresponding to the vehicle type used, and communication between the mobile relay device and the vehicle relay device is performed according to the parameter.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a relay system, wherein one of the conditions is that the authentication information stored in the vehicle control device matches the authentication information stored in the portable device capable of wireless communication with the vehicle control device. The present invention relates to a device that relays wireless communication between a vehicle control device and a portable device in a control system.

  For example, in the immobilizer function, for example, a vehicle control device that starts an engine performs authentication with an authorized portable device before actually starting, and starts when authentication is obtained. The communicable distance between the portable device and the vehicle control device is as short as several tens of centimeters. Therefore, when starting an engine remotely from the exterior of a vehicle, as shown, for example in patent document 1, the system which relays the wireless communication between a vehicle control apparatus and a portable machine is needed. By using the technique disclosed in Patent Document 1, even a vehicle having an immobilizer function, the portable device can be taken out of the vehicle and the engine can be started remotely.

JP 2014-49770 A

  However, when the conventional system described above is used, there are the following problems. For example, the bit configuration of bit 1/0 constituting the signal transmitted and received between the vehicle control device and the portable device differs depending on the vehicle type and the like. Therefore, for example, the bit rate, which is one of the parameters relating to communication, is transmitted at a bit rate having a high frequency with a fine sampling period for all bit configurations corresponding to each vehicle type. The bit rate is related to the upper limit of the communicable distance, and if the bit rate frequency is increased, the upper limit of communicable is shortened, and when used in an environment where the communication distance is long in such a state, it is affected by disturbances, etc. The quality of wireless communication is degraded. As a result, there is a problem that an operation from a position sufficiently away from the vehicle cannot be performed.

  In order to solve the above-described problems, a relay system according to the present invention includes (1) authentication information stored in a vehicle control device and authentication information stored in a portable device capable of wireless communication with the vehicle control device. Is a system that relays wireless communication between the vehicle control device and the portable device in a system that controls a vehicle on the condition that the two match, the vehicle relay device that can communicate with the vehicle control device And a portable repeater capable of communicating with the portable device. At least one of the portable relay device and the vehicle relay device stores a plurality of setting information related to communication depending on the vehicle type in association with the vehicle type, and at least one of the portable relay device and the vehicle relay device is provided with a setting switch. In accordance with the operation of the setting switch, setting information related to communication corresponding to the vehicle type to be used is set, and communication between the portable repeater and the vehicle repeater is performed.

  Various setting information when performing wireless communication for confirming authentication information between the vehicle control device and the portable device differs depending on the vehicle type. Such setting information that differs depending on the vehicle type may affect the wireless transmission for relay between the vehicle relay device and the portable relay device. Therefore, in the present invention, different setting information for each vehicle type is stored in a portable relay device or a vehicle relay device in association with the vehicle type. When the vehicle type on which the relay system of the present invention is mounted is determined, the vehicle type is specified using the setting switch. Accordingly, setting information associated with the vehicle type and stored is acquired, and wireless communication is performed according to the acquired setting information. Regardless of the vehicle type, wireless communication can be performed under conditions suitable for it. Therefore, communication conditions are stable and long distance transmission can be easily performed. A portable relay machine and a vehicle relay machine can be used in common for different vehicle types. Further, since the vehicle type can be switched with the setting switch, it is possible to easily perform the operation according to the vehicle type to be used.

  The setting switch and the setting information may be stored and held in both the portable relay device and the vehicle relay device, or on the other hand. When both are performed, there is no need to send the setting information or the vehicle type information designated by the setting switch to the other party. When it is provided on one side, it is necessary to communicate and notify the other party, but since only one of the switches and storage means is installed, the configuration can be simplified.

  (2) The setting information is a parameter for determining a sampling interval of the data to be wirelessly communicated, and the sampling interval may be widened within a range where the data can be recognized. In the embodiment, the parameter corresponds to, for example, a bit rate or a carrier frequency. For example, if the sampling interval is narrowed and the data is taken in more finely, the data transmitted from the vehicle control device or the portable device can be accurately recognized and relayed. Further, when data is taken in more finely, for example, even when the bit configuration of one bit of setting information differs depending on the vehicle type which is the problem solved in the invention of (1), the data is acquired at a common sampling interval. Can be recognized. However, if the sampling interval is shortened, the wireless communication distance is shortened, and the problem of increasing the communication distance by relay cannot be solved and cannot be put to practical use. Therefore, in the present invention, the communication distance that can be relayed can be increased by setting a wide sampling interval within a range in which data for wireless communication can be recognized.

  (3) The parameter may be the same for wireless communication from the vehicle repeater to the portable repeater and for wireless transmission from the portable repeater to the vehicle repeater. In this way, for example, transmission processing and reception processing can be performed using the same setting information in each repeater, which is preferable because the processing is simplified.

  (4) The parameter may be determined based on a high pulse width of the bit structure and a greatest common divisor of the low pulse width. In this way, it is possible to optimize the conditions for increasing the communication distance while accurately recognizing data.

  (5) It is preferable to perform control for relaying based on the state of High / Low when a set time has elapsed from the switching of High / Low of the received data. If the bit configuration of the data to be communicated is known, whether the received data is 0/1 or not from the elapsed time since the switching of High / Low and the state of High / Low at that time, You can know the situation, such as whether there is any abnormality. If various controls are performed based on the situation, the communication distance can be increased and the quality of wireless communication can be improved, and stable relay can be performed.

  (6) The control for the relay is a determination of whether the data being received is 1 or 0. Based on the determination result, the Low state or the High state respectively assigned to 1 and 0 is continued for a set time. A function for creating a waveform may be provided. Since it is converted into a relay waveform of “one cycle is High / 1 cycle is Low” in accordance with 0/1, the bit rate is apparently low, and long-distance transmission is possible.

  (7) The control for the relay is a determination of whether the data being received is 1 or 0, and has a correction function for outputting normal waveform data based on the determination result even if an abnormal pulse occurs thereafter. Good. (8) It is preferable to provide a correction function for outputting normal waveform data even when an abnormal pulse that cannot be generated occurs from the elapsed time from the High / Low switching of the received data. For example, when wireless communication is actually performed in the vicinity of a communicable distance, a bit abnormality may occur due to a communication environment or the like, and an abnormal pulse may be generated. If an abnormal pulse occurs, the correct data cannot be sent and received, so authentication cannot be performed and the vehicle cannot be controlled. Therefore, in the present invention, since a normal waveform is forcibly generated and output, it is preferable that the communicable distance is extended.

  (9) When a plurality of the abnormal pulses occur between the High / Low switching of the received data and the next normal High / Low switching, the correction by the correction function is not performed. Good. The corrections (7) and (8) described above are strong corrections forcibly sending a normal waveform even if there is an abnormality. Therefore, if there are multiple times, the reliability of the original data will be lowered, so correction is not made.

  (10) There are a plurality of portable devices having different authentication information, the vehicle control device stores and holds each authentication information of the plurality of portable devices, and the vehicle control device stores the plurality of authentication information stored and held. A response request signal including one of the authentication information is transmitted, and the portable device transmits response data when the authentication information included in the received response request signal matches its own, and the vehicle control The apparatus is a relay system corresponding to a system that determines that the authentication information matches when the response data is received. Then, after completing the relay of the response request signal, the portable relay device switches to a communication state for relaying the response data, performs carrier sense at the timing when the response data comes, and if no carrier comes, It is good to switch to the communication state which relays a response request signal.

  In the present invention, since carrier sense is always performed when a response exists, if there is no carrier sense, there is no portable device having the authentication information specified in the response request signal transmitted earlier, and response data is transmitted. It becomes clear that it has not been done. If there is no response data within a certain time, the vehicle control device transmits a response request signal based on the next authentication information. Therefore, if the relay device continues in the response data reception mode and delays in switching to the response request signal reception mode, the next response request signal cannot be received and relayed to a legitimate portable device. May not be possible. If relaying is not possible in this way, the vehicle cannot be controlled despite the presence of a legitimate portable device.

  According to the present invention, since it is possible to recognize that there is no response data at an early stage and to switch the communication state, it is possible to reliably receive and relay the response request signal sent next.

  (11) After completing the relay of the response request signal, the vehicle repeater switches to a communication state in which the response data is relayed, performs carrier sense at the timing when the response data comes, and when no carrier comes, It is good to switch to the communication state which relays the said response request signal. As in (10) above, it is possible to quickly know the presence or absence of response data, switch the communication state, and reliably relay the response request signal sent next.

  (12) Carrier sense is performed at the timing when the response data comes. When a carrier comes, the communication state for relaying the response data may be continued. In this case, since the received carrier has a high possibility of response data, the response data can be relayed by continuing communication as it is.

  (13) The carrier sense may be performed a plurality of times. In order to speed up the processing, one time is preferable, but accuracy may be ensured by confirming multiple times. Compared to actually checking the data, the time margin can be secured even if carrier sense is performed multiple times, so accuracy is more important than the time disadvantage of performing carrier sense multiple times. The present invention is preferred.

  (14) The vehicle relay device or the mobile relay device may have a function of transmitting an ACK by itself during reception of WAKE transmitted from the vehicle control device. Since ACK is common to each portable device, it does not wait for it to actually be sent from the portable device and relays it, but instead causes the vehicle repeater or portable repeater to issue itself. It can be shortened. Furthermore, since ACK is returned during WAKE reception, the processing time can be further reduced, which is preferable.

  In particular, when the RFIC is prepared only for transmission and reception as in the invention of (15) described below, for example, a system in which a portable device transmits an ACK or a response while receiving a WAKE or response request signal When applied to the case, the repeater returns ACK without waiting for ACK from the portable device while relaying WAKE, so that the processing speed of the entire system may be increased.

  (15) The transmission / reception unit that performs relay in the vehicle relay device and the portable relay device may be configured by a transmission-only RFIC and a reception-only RFIC. The transmission-only RFIC and the reception-only RFIC do not necessarily need to be hardware-only for transmission or reception-only, and an RFIC that can be transmitted and received may be used for transmission-only or reception-only. . There is no need to switch between transmission and reception, processing time can be shortened, and communication control can be performed easily. Furthermore, by performing transmission and reception with a dedicated RFIC, the reception process and the transmission process can be performed at the same time, so that the time can be further reduced. As a result, even if the allowable time from when the response request signal is transmitted to when the response data is received becomes short, it is possible to cope with it. Since the RFIC is dedicated to reception and transmission, it can be designed without considering the switching time, so that it is possible to design at a frequency that increases the reliability of wireless communication.

  (16) The portable relay device includes a large-capacity battery, and the case of the portable relay device includes a storage unit that stores the portable device, and the portable device is stored in the storage unit when the portable device is stored in the storage unit. It is preferable to place the machine and the portable relay machine in a relative position where communication is possible. By providing two RFICs and making them dual, power consumption increases. Therefore, the internal battery uses a large-capacity battery to improve the battery life. A large-capacity battery means a larger capacity than a general-purpose dry battery, a button battery, or the like. For example, there is a battery mounted on a mobile terminal such as a smartphone. In order to make the portable repeater portable, even with a large capacity battery, the weight and dimensions are determined in consideration of portability. On the other hand, a large-capacity battery is larger in size and shape than a button battery, and the case for configuring a portable relay device is also increased. Therefore, when the portable relay device is enlarged and a space for storing the portable device is secured as a storage portion, and the portable device is stored in the storage portion, the portable device and the portable relay device can be arranged close to each other within a desired distance. Yes, because it can communicate reliably.

  (17) The case of the portable repeater includes a storage unit that stores the portable device, and in a state where the portable device is stored in the storage unit, the portable relay device is in a relative position where the portable device and the portable relay device can communicate with each other. Try to be placed in a relationship. According to the present invention, when a space for storing the portable device is secured and the storage portion is stored, and the portable device is stored in the storage portion, the portable device and the portable relay device can be disposed close to each other within a desired distance. Good because it can communicate.

  (18) The portable repeater stores and holds a response request signal including the authentication information transmitted by the vehicle control device as a normal response request signal, and the portable repeater outputs the normal response request signal, It is preferable to provide a separation determination function for performing notification based on a determination result of whether or not response data from the portable device is received. The notification of the determination result may be performed only when either communication is possible or when communication is not possible, but it is preferable to notify both of them because the notification result can be reliably recognized.

  According to the present invention, it is possible to know from the notification result whether the mobile relay device and the mobile device are within an appropriate range in which communication is possible. So, for example, if you cannot control the vehicle equipment remotely by operating the mobile repeater, if the actual control is not possible, communication between the mobile repeater and the mobile device is not possible in the first place, It is possible to easily understand whether the communication system is faulty. In the present invention, it can be confirmed without starting the engine.

  (19) When the portable relay device relays a response request signal including the authentication information transmitted by the vehicle control device and receives response data for the response request signal from the portable device, the relayed response request A signal may be stored and held as the normal response request signal. In this way, a proper response request signal can be easily obtained and stored.

  (20) When the mobile repeater relays a plurality of types of response request signals including the authentication information transmitted by the vehicle control device, the response request signal that has not received response data is also stored as the normal response request signal. It is good to hold. When there are multiple regular portable devices, the user does not necessarily have a portable device corresponding to the response request signal transmitted the first time, and response data is transmitted by the transmission of the response request signal for the first time. Sometimes. Even in such a case, the response request signal for which the response data has not been transmitted also includes the authentication information of the authorized portable device. Therefore, in the present invention, by storing and holding the authentication information of the legitimate portable device as a normal response request signal, even when the user carries another portable device at a later date, the separation determination can be performed. good.

  (21) When the mobile repeater relays a plurality of types of response request signals including the authentication information transmitted by the vehicle control device, the mobile relay device stores and holds all the relayed response request signals as the normal response request signals. It is good to do so. For example, even when there is no response data for all transmitted response request signals, all the response request signals are sent from the vehicle control device, and therefore there is a high possibility of response request signals corresponding to all legitimate portable devices. Therefore, by storing and holding all of them as normal response request signals, it is possible to perform the separation determination for any portable device carried thereafter.

  And, for example, if the portable relay device is operated without the portable device and the vehicle control device is made to send a response request signal, the response data is not sent, so all the data stored and held in the vehicle control device A response request signal for the portable device can be acquired.

  According to the present invention, a portable repeater or a vehicle repeater can be used in common for different vehicle types. Moreover, since the setting information is switched depending on the vehicle type, the setting information can be made appropriate for the vehicle control device and the portable device for each vehicle type, and the quality of wireless communication can be improved.

It is a figure which shows an example of the vehicle remote control system containing the relay system which concerns on this invention. It is a figure which shows the communication timing of each data and signal. It is a figure which shows an example of the bit structure of the data communicated by radio | wireless. It is a figure explaining 3rd embodiment. It is a figure which shows the example of communication in case a some portable device exists. It is a figure explaining 5th embodiment. It is a figure explaining 7th embodiment. It is a figure explaining 8th embodiment. It is a figure explaining 8th embodiment. It is a figure explaining a modification. It is a figure explaining a modification. It is a figure explaining a modification. It is a figure explaining a modification. It is a figure explaining a modification. It is a figure explaining 9th embodiment. It is a figure explaining 9th embodiment. It is a figure explaining a modification. It is a figure explaining 10th embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. These drawings are used to explain technical features that can be adopted by the present invention. The configuration, shape, and the like of the device described are merely illustrative examples, and the present invention is not construed as being limited thereto, and is based on the knowledge of those skilled in the art without departing from the scope of the present invention. Various changes, modifications, and improvements can be added.

[Basic configuration] (First embodiment: Sharing to different car models)
FIG. 1 shows an example of a vehicle remote control system using the relay system of the present invention. Based on FIG. 1, the basic configuration which is the premise of the present system will be described while explaining the operation of the communication processing. This system includes a vehicle control device 1 installed in a vehicle, a vehicle relay device 2, a mobile relay device 3, and a mobile device 4.

  The vehicle control device 1 is a device for controlling predetermined equipment of a vehicle. The control of the predetermined device is for starting the vehicle in a state where it can run in response to a user operation such as pressing a push start button. For example, the cell motor is turned on in an automobile using an internal combustion engine as a power source. (Engine start), and turning on the power to the motor in an electric vehicle using a motor (motor) as a power source. Hereinafter, a case where “engine start” is performed will be described as an example.

  The vehicle control device 1 of the present embodiment matches the authentication information stored in the portable device 4 with the authentication information stored in the vehicle control device 1 prior to performing control on the device of the vehicle to be controlled. As one of the conditions, control such as engine start is performed.

  In order to perform such processing, the vehicle control device 1 and the portable device 4 are configured to be capable of wireless communication with each other. In order to perform such processing, the vehicle control device 1 includes a control unit 1a, a transmission / reception unit 1b, and an authentication information storage unit 1c. Although not shown, the vehicle control device 1 is connected to a battery of the vehicle and receives power supply from the battery. The vehicle control device 1 is linked with, for example, wired communication with a vehicle device to be controlled, and controls a predetermined device. The authentication information storage unit 1 c is a non-volatile storage unit and stores authentication information of the authorized portable device 4. The authentication information includes, for example, an ID code. When there are a plurality of regular portable devices 4, the authentication information of each of the plurality of portable devices 4 is stored.

  The control part 1a is comprised by MPU etc., for example. The control unit 1a is a response for confirming the existence of the authorized portable device 4 based on the function of outputting a control signal for controlling the device of the vehicle to be controlled and the authentication information stored in the authentication information storage unit 1c. It has a function of outputting command data, etc. when communicating with other devices such as a request signal (LF data).

  The transmission / reception unit 1 b performs wireless communication with the transmission / reception unit mounted on the portable device 4 or the vehicle relay device 2. The transmission / reception unit 1b is configured by a vehicle-mounted transmission / reception RFIC, for example. This transmission / reception unit 1b has a function of wirelessly transmitting LF data such as various commands and data output from the control unit 1a at the first frequency, and a command and data transmitted wirelessly at the second frequency from other devices. It has a function of receiving RF data and passing it to the control unit 1a. The second frequency is higher than the first frequency, and the communicable distance of RF data using the second frequency is also long. As an example, the first frequency is 134 kHz and the second frequency is 314 MHz.

  The portable device 4 is called, for example, a smart key or a genuine key. The portable device 4 includes a control unit 4a, a transmission / reception unit 4b, and an authentication information storage unit 4c. The power source of the portable device 4 uses a built-in primary battery. As the primary battery, when a commercially available dry battery, a button battery, or the like is used, it can be easily obtained and mounted, and it is easy to handle. In particular, when a button battery is used, the portable device 4 can be downsized.

  The authentication information storage unit 4c stores a unique ID code as authentication information for the immobilizer function. The control unit 4a is configured by, for example, an MPU. Control part 1a outputs a response signal (RF data: response data), when the response request signal addressed to itself from vehicle control device 1 which constitutes a pair is received. The transmission / reception unit 4 b performs wireless communication with the transmission / reception unit mounted on the vehicle control device 1 or the portable relay device 3. For example, it is configured by a vehicle-mounted transmission / reception RFIC. The transmission / reception unit 4b receives LF data such as command / data wirelessly transmitted at the first frequency and passes it to the control unit 4a, various command / data such as a response signal output from the control unit 4a, etc. A function of wirelessly transmitting the RF data at the second frequency is provided.

  When the transmission timing such as reception of a predetermined signal is satisfied, the control unit 1a of the vehicle control device 1 accesses the authentication information storage unit 1c, acquires the ID code as the stored authentication information, and includes the ID code A response request signal (LF data) is output. The predetermined signal is, for example, a foot brake signal that is output when the foot brake pedal of the vehicle is depressed. When the portable device 4 exists within the communicable distance of the response request signal and receives the response request signal, the portable device 4 wirelessly transmits a response signal including its own authentication information. As described above, the vehicle control device 1 is configured such that the control unit 1a of the vehicle control device 1 receives the response signal including the normal authentication information within a predetermined time after outputting the response request signal. Perform engine start processing.

  The communication distance between the vehicle control device 1 and the portable device 4 is sufficient if communication is possible in a situation where the driver carrying the portable device 4 is sitting in the driver's seat and performing the engine starting operation, for example. Relatively short. This relatively short distance is about 1 to 2 m when the first frequency for transmitting LF data is 134 kHz. In the present embodiment, the vehicle repeater 2 and the portable repeater 3 are provided, and wireless communication performed between the vehicle control device 1 and the portable device 4 is relayed by these repeaters, thereby extending the communicable distance. By extending the communicable distance in this way, this system enables the mobile controller 3 and the portable device 4 to be carried with the vehicle control device 1 even when the user carrying the portable relay device 3 and the portable device 4 is relatively far from the vehicle. Authentication using the authentication information between the machines 4 can be performed, and the engine can be started from the remote location.

  The vehicle relay 2 is disposed at a predetermined position in the vehicle. The vehicle repeater 2 includes a control unit 2 a that controls the vehicle repeater 2, a first vehicle-side transmission / reception unit 2 b for performing wireless communication with the vehicle control device 1, and a wireless communication with the portable repeater 3. The 2nd vehicle side transmission / reception part 2c is provided. Although not shown, the vehicle relay machine 2 is connected to a battery of the vehicle and receives power supply from the battery. The control part 2a is comprised by MPU etc., for example. Moreover, the 1st vehicle side transmission / reception part 2b and the 2nd vehicle side transmission / reception part 2c are comprised by RFIC for vehicle transmission / reception, respectively.

  The first vehicle side transmission / reception unit 2b transmits / receives data to / from the transmission / reception unit 1b of the vehicle control device 1, receives radio waves wirelessly transmitted in the transmission frequency band (first frequency) of the transmission / reception unit 1b, Wireless transmission on two frequencies. And since the communication distance is short, the weak radio wave used by the weak radio station which is one of the radio stations is used. Moreover, the 2nd vehicle side transmission / reception part 2c uses the electromagnetic wave of the frequency band used for a specific power saving radio station. By using this specific power-saving wireless communication, the communication distance is, for example, about 1 to 2 km as an overlook distance, and even when there is an obstacle, it is about several hundred meters. Therefore, for example, even when the house is a detached house or a condominium and the vehicle is parked in a parking lot in the site, communication with the vehicle control device 1 is possible.

  Further, in the present embodiment, the vehicle relay machine 2 and the vehicle control device 1 are connected by a communication cable that performs wired communication. The control unit 2a of the vehicle relay machine 2 transmits a foot brake signal and an engine start request signal using this wired communication. The foot brake signal is a signal corresponding to a signal output when the foot brake pedal of the vehicle is depressed. The engine start request signal is, for example, a signal corresponding to a signal output when a push start button of the vehicle is pressed.

  The mobile relay device 3 includes a control unit 3 a that controls the mobile relay device 3, a first mobile-side transmission / reception unit 3 b that performs communication with the mobile device 4, and a second mobile phone that performs communication with the vehicle relay device 2. The side transmission / reception part 3c is provided. Furthermore, the portable relay device 3 includes an operation unit 3d and a notification unit 3e.

  The operation unit 3d is, for example, a push button switch corresponding to an operation instruction such as a start switch or a stop switch. A user at a position away from the vehicle operates the vehicle control device 1 mounted on the vehicle by pressing the operation unit 3d, and remotely operates the engine by starting or stopping the engine. In order to perform such processing, when detecting an operation on the operation unit 3d, the control unit 3a transmits an instruction command corresponding to the operation from the second portable side transmission / reception unit 3c. A built-in primary battery is used as the power source of the portable relay 3. As the primary battery, when a commercially available dry battery, a button battery, or the like is used, it can be easily obtained and mounted, and it is easy to handle. In particular, when a button battery is used, the mobile relay 3 can be downsized.

  The notification unit 3e notifies the operation status and the like, and for example, notifies an execution result such as an engine start success / error transmitted from the vehicle control device 1 or the vehicle relay unit 2. The alerting | reporting part 3e alert | reports using vision or hearing. In the case of using sight, the notification unit 3e uses, for example, a display panel to display the execution result as characters, figures, etc., or using a light emitting means such as an LED, and the lighting state (flashing / extinguishing / lighting) Or informing by the emission color. In the case of using hearing, the notification unit 3e uses a speaker, for example, to notify by voice or buzzer. These are realized by combining one or a plurality.

  The control unit 3a is configured by, for example, an MPU. Moreover, the 1st portable side transmission / reception part 3b and the 2nd portable side transmission / reception part 3c are comprised by RFIC for vehicle transmission / reception, respectively. And the 1st portable side transmission / reception part 3b transmits by radio | wireless by the receiving frequency band (1st frequency) of the transmission / reception part 4b of the portable device 4, and carries out radio reception by the transmission frequency (2nd frequency) of the transmission / reception part 4b. And since the communication distance is short, the weak radio wave used by the weak radio station which is one of the radio stations is used. Moreover, the 2nd portable side transmission / reception part 3c uses the electromagnetic wave of the frequency band used for a specific power saving radio station.

  In this embodiment, the engine can be remotely started using the relay function by communication transition as shown in FIGS. (1) The control unit 3a of the mobile relay device 3 outputs a start signal when the operation unit 3d is pressed. The 2nd portable side transmission / reception part 3c wirelessly transmits this starting signal toward the vehicle relay machine 2. FIG.

  (2) The second vehicle-side transmitting / receiving unit 2 c of the vehicle repeater 2 receives the start signal transmitted from the portable repeater 3. When receiving the start signal, the control unit 2a of the vehicle relay device 2 transmits a foot brake signal to the vehicle control device 1 using a wired communication function. As shown in FIG. 2, the vehicle relay device 2 maintains the state in which the foot brake signal is turned ON during the following data / signal relay / transmission processing.

  (3) Upon receiving the foot brake signal, the control unit 1a of the vehicle control device 1 accesses the authentication information storage unit 1c, acquires the ID code as the stored authentication information, and receives a response request including the ID code. A signal (LF data) is output. The transmission / reception unit 1b transmits the LF data using a wireless transmission function.

  (4) The first vehicle-side transmitting / receiving unit 2b of the vehicle relay device 2 receives the LF data. The vehicle relay device 2 wirelessly transmits the wireless LF data based on the received LF data to the portable relay device 3 using the transmission function of the second vehicle side transmission / reception unit 2c. The wireless LF data is data that is reversible with the LF data.

  (5) The second portable side transceiver 3c of the portable repeater 3 receives the wireless LF data. The portable repeater 3 generates original LF data from the received wireless LF data, and the generated LF data is transmitted to the portable device 4 using the transmission function of the first portable transmission / reception unit 3b at the first frequency. Send.

  (6) Since the LF data transmitted by the mobile relay device 3 is transmitted at the first frequency and is equivalent to the LF data transmitted by the transmission / reception unit 1b of the vehicle control device 1, the transmission / reception unit 4b of the mobile device 4 Receives the LF data. The control unit 4a determines whether or not the received LF data is addressed to itself. Specifically, it is determined whether or not the ID code included in the LF data matches the own ID code stored in the authentication information storage unit 4c. If the ID codes match, RF data (response data) as a response signal is transmitted using the transmission function of the transmission / reception unit 4b. The control unit 4a does not transmit anything when the ID codes do not match.

  (7) The 1st portable side transmission / reception part 3b of the portable relay machine 3 receives RF data. The portable repeater 3 transmits wireless RF data based on the received RF data by using the transmission function of the second portable side transceiver 3c. The wireless RF data is data that is reversible with the LF data.

  (8), (9) The second vehicle-side transmitting / receiving unit 2c of the vehicle repeater 2 receives the wireless RF data. The vehicle repeater 2 generates original RF data from the received wireless RF data, and transmits the generated RF data at the second frequency using the transmission function of the first vehicle-side transmitting / receiving unit 2b. Further, prior to the transmission of the RF data from the first vehicle side transmission / reception unit 2b, the control unit 2a of the vehicle relay device 2 transmits an engine start request signal to the vehicle control device 1 using a wired communication function. The vehicle relay device 2 wirelessly transmits the RF data while maintaining the state where the engine start request signal is turned on.

  The transmission / reception unit 1 b of the vehicle control device 1 receives the RF data transmitted from the vehicle relay device 2. The control unit 1a authenticates whether the received RF data is RF data (response data) from the legitimate portable device 4. Then, when the authentication result is RF data from the authorized portable device 4, and both the engine start request signal and the foot brake signal are ON, control for starting the engine is performed. Note that when a certain period of time has elapsed from the start of the engine, the control unit 1a performs control to stop the engine. By continuing the driving operation of the engine, warm-up operation is performed, or the temperature in the passenger compartment is adjusted to an appropriate temperature by an air conditioner mounted on the vehicle.

  In addition, when stopping the engine during the warm-up operation, the user operates the operation unit 3d of the mobile relay device 3. When the mobile relay device 3 receives an operation stop command associated with the operation of the operation unit 3d, the mobile relay device 3 transmits the operation stop command. The transmitted operation stop command reaches the vehicle control device 1 via the vehicle relay 2. The control part 1a will perform control which stops the engine in driving | operation operation | movement, if an operation stop command is received. Further, the control unit 1a relays / transmits the execution result for the received operation command in the same manner as the LF data, and notifies the result when it reaches the mobile relay device 3.

[Features of the first embodiment]
FIG. 3 shows an example of the bit structure of LF data and RF data. As shown in the figure, for example, when LF data is viewed, in “bit 0”, 200 μs is high and 150 μs is low (see FIG. 3A), and in “bit 1”, 500 μs is high and 200 μs is high. Low (see FIG. 3B). In this way, each bit configuration has a high start and falls low. On the other hand, the RF data is “800 μs is High and 800 μs is Low” (see FIG. 3C) and “800 μs is Low and 800 μs is High” (FIG. 3 (d)). ))). In “bit 1”, the same state (H / L) is maintained for 1600 μs for one cycle (see FIGS. 3E and 3F). Which bit configuration is adopted matches the state of the previous bit. That is, for example, when a certain “0” is represented in FIG. 3C, it ends with “High”, so the next data has a bit configuration starting with “High” (“0”: FIG. 3C, “1”). : The one shown in FIG. 3 (e) is used. Therefore, when “0” continues, the same bit configuration is used, and when “1” continues, FIG. 3 (e) and FIG. 3 (f) are used alternately.

  When such data is transmitted by wireless communication, it is transmitted at a predetermined bit rate. At this time, since the pulse widths of the LF data and the RF data are greatly different, a bit rate that does not impair the pulse width is set. The illustrated bit configuration is an example, and differs depending on the automobile manufacturer and the vehicle type. With such different bit configurations, the bit rates suitable for the different bit configurations are also different.

  Therefore, in the present embodiment, the portable repeater 3 stores a parameter storage unit 3f that stores communication-related parameters corresponding to different bit configurations depending on the automobile manufacturer and vehicle type, and one of the plurality of parameters stored in the parameter storage unit 3f. A setting switch 3g for setting one is provided. The parameter relating to communication is, for example, a bit rate at the time of sampling. Further, there are some vehicles having different carrier frequencies of LF data. Therefore, in this embodiment, a combination of the bit rate and the carrier frequency is stored as the parameter. Also, information about the bit configuration may be stored. The parameter storage unit 3f stores, for example, a communication parameter and a table associating information such as the vehicle type.

  The setting switch 3g may be, for example, a dial type or a dip switch. If a dip switch is used, the installation space can be reduced, the portable relay 3 can be miniaturized, and the possibility that the setting of the dip switch is accidentally switched during use can be suppressed as much as possible.

  Further, the vehicle relay device 2 includes a parameter storage unit 2d that stores parameters relating to communication corresponding to different bit configurations depending on automobile manufacturers and vehicle types. The information stored in the parameter storage unit 2d is the same as the information stored in the parameter storage unit 3f of the mobile relay device 3.

  The parameter setting associated with this vehicle type is performed as follows. First, for example, according to the setting of the setting switch 3g, the mobile relay device 3 accesses the parameter storage unit 3f by the control unit 3a, acquires parameters such as the bit rate associated with the set vehicle type, etc. Set in the transceiver 3c. Moreover, the control part 3a sends the acquired setting information of the setting switch 3g to the vehicle relay machine 2 by the packet communication which is not the relay shown in FIG. The control unit 2a of the vehicle repeater 2 accesses the parameter storage unit 2d based on the setting information received by the second vehicle-side transmitting / receiving unit 2c, acquires parameters associated with the set vehicle type, etc. It sets to the two vehicle side transmission / reception part 2c. In this way, communication from the portable repeater 3 to the vehicle repeater 2 can be performed simply by sending 1/0 information of the dip switch in the state of the setting switch 3g, for example, a display switch.

  At the time of actual relaying, sampling at the time of transmission / reception of wireless LF data or wireless RF data is performed according to parameters such as a set bit rate in the second portable side transmission / reception unit 3c or the second vehicle side transmission / reception unit 2c. .

  According to this embodiment, since the portable relay machine 3 and the vehicle relay machine 2 can be used in common with respect to different vehicle types etc., it is preferable. Since the vehicle type can be switched by the setting switch 3g, it is preferable because the operation according to the vehicle type to be used can be easily performed.

[Modification of First Embodiment]
In the present embodiment, information in which the vehicle type and the parameters related to communication are associated with each other is stored in both the vehicle relay device 2 and the mobile relay device 3, but the present invention is not limited to this. A parameter relating to communication corresponding to the vehicle type to be used, which is provided only on the machine 3 side and is uniquely specified by the setting of the setting switch 3g, may be sent to the vehicle relay machine 2. The vehicle relay device 2 may store and hold the transmitted parameters, and set parameters such as the bit rate of the second vehicle-side transmitting / receiving unit 2c based on the parameters. In this case, it is not necessary to provide both the vehicle relay device 2 and the portable relay device 3 with information relating the vehicle type and the parameters related to communication, so that the configuration can be simplified. Moreover, the portable relay machine 3 is preferable because it can be operated by a user and can be easily set.

  In addition, when information related to a vehicle type or the like and a parameter related to communication is stored only in one side, the information may be provided on the vehicle repeater 2 side, contrary to the above. In this case, a setting switch may be provided on the vehicle relay machine 2. Normally, the setting switch is operated only once at the beginning of installation in the vehicle. Therefore, the setting can be easily performed by operating the setting switch of the vehicle relay 2 in a free state before being installed at a predetermined position in the vehicle. After the setting switch is set, there is usually no switch switching operation. Therefore, if the vehicle repeater 2 is installed in the vehicle, the setting switch is arranged in a place where it is difficult to switch the setting switch. There is no problem.

  Moreover, when installing the setting switch 3g in the portable repeater 3, it is preferable that the setting switch 3g can be covered with a closing member such as a cover or a lid. By covering with a closing member such as a cover / lid, it is possible to prevent the setting switch 3g from being accidentally touched while the portable relay device 3 is being carried or while the operation unit 3d is being operated, and the setting being switched.

  In the above-described embodiment, the communication for transmitting LF data between the vehicle control device 1 and the vehicle relay device 2 uses wireless communication, but the present invention is not limited to this and is performed by wired communication. And especially good. The transmission / reception unit 1b of the vehicle control device 1 includes an antenna for LF data and wiring connected to the antenna. When performing by wire communication, for example, a communication cable is connected to the wiring, and the first vehicle side transmission / reception unit 2b of the vehicle relay machine 2 is linked. The connection to the wiring may be branched without cutting the wiring using, for example, an electrotap. Since the LF has a low frequency and the antenna is external, the work of connecting a communication cable for wired communication can be easily performed.

  Moreover, in embodiment mentioned above, although the communication which transmits RF data etc. between the vehicle control apparatus 1 and the vehicle relay machine 2 between the vehicle control apparatus 1 and the vehicle relay machine 2 utilized wireless communication, The present invention is not limited to this, and may be performed by wired communication. There is a high possibility that an RF antenna having a high frequency is provided as an internal antenna inside the unit. In the case of a built-in antenna, in order to perform wired communication, it is necessary to disassemble the unit or cut a wiring pattern in the unit and connect a wired cable, which makes the work complicated. If the wiring pattern is cut, it cannot be restored.For example, if there is a contact failure, the immobilizer function of the vehicle may not operate normally depending on the vehicle, and the engine starts due to the user's operation such as pressing the normal push start button. It may not be possible. Therefore, RF data communication is particularly preferably performed by wireless communication as in the embodiment.

  In the above-described embodiment, the engine start request signal and the foot brake signal are sent from the vehicle relay device 2 to the vehicle control device 1 using wired communication. However, the present invention is not limited to this, Wireless communication may be used. However, it is sufficient that the wired communication signal is used because the ON state can be easily maintained.

[Optimization] (second embodiment)
In this embodiment, the bit rate, which is one of the parameters related to communication in the first embodiment described above, is appropriately set. That is, as shown in FIG. 3, when the pulse widths of LF data and RF data are greatly different, the sampling period is made as fine as possible so that the normal pulse width is not lost, and transmission is performed at a bit rate with a high frequency. Thereby, reliable LF data can be transmitted. However, the bit rate is related to the upper limit of the communicable distance, and if the bit rate frequency is increased, the upper limit of communicable is shortened. As a result, the quality of wireless communication is degraded.

  Therefore, in this embodiment, paying attention to the pulse width of the LF data bit configuration and RF data bit configuration set for each vehicle type, etc., the bit rate is increased within the range where the wireless quality is within the allowable range, and communication is possible. The long distance was made longer. The long bit rate within the allowable range is set based on the greatest common divisor of the pulse width of each bit configuration.

  In the example shown in FIG. 3, the pulse width of LF data is 200 μs, 150 μs, and 500 μs, and the pulse width of RF data is 800 μs and 1600 μs. In this case, the greatest common divisor is 50 μs. Therefore, in the case of the vehicle model having the bit configuration shown in FIG. 3, if the sampling period is 50 μs, the sampling waveform data with the pulse width of 50 μs and each data are in phase, and either “0/1” of LF data or RF data Can be sampled at the rise / fall timing. Therefore, the balance between the bit rate and the radio quality can be optimized by sampling each data of the bit configuration shown in the figure at 20 kbbs.

  Normally, a common bit rate allowed for all vehicle types is set. However, if such a condition is satisfied, it becomes too fine. As a result, as described above, there is a problem that the upper limit of the communicable distance is shortened and radio waves do not fly. On the other hand, in the present embodiment, for example, the greatest common divisor is used, and the parameters related to the optimal communication are set for each vehicle type, so that the problem can be solved.

  In this embodiment, a common bit rate parameter is used for LF data and RF data. However, the present invention is not limited to this. For example, the bit rate is set for LF data communication and RF data communication. It is preferable to make it variable so as to further improve the radio quality.

[Modulation of Relay Waveform] Third Embodiment In this embodiment, 0/1 determination of LF data is performed. If “bit 0”, one cycle is Low, and if “bit 1”, one cycle is High. And then modulated with the data. In the second embodiment described above, the waveform is optimized to reduce the bit rate and increase the communicable distance. In the present embodiment, the Low state and the High state continue for a relatively long time, the bit rate can be apparently reduced, and the quality can be improved.

  Then, the 0/1 determination is performed by looking at the High / Low state of the LF data at the determination time, not the entire LF data. That is, as described above, the data structure of LF data at “bit 0” and “bit 1” is determined. In the example shown in FIGS. 3A and 3B, both “bit 0” and “bit 1” are High start, and if it is Bit 0, it becomes Low when 200 μs has elapsed. Therefore, 0/1 determination is performed from the state of the LF data at the time of 200 μs + α with a certain margin at 200 μs. Since the determination is made based on the state of the LF data at a certain time as described above, the determination can be made quickly and easily before the entire data constituting “bit 1” and “bit 0” is acquired, and the data is received every moment. This is applicable to a communication system that continuously transfers / relays data to be transmitted.

  Note that a certain point in time when the 0/1 determination is made is set based on the point at which the bit configuration of each bit switches to Low, but it is not viewed once at a pinpoint, but continuously or several times at appropriate times. You should look at it. By doing so, it is possible to make an accurate determination.

  As an example, as shown in FIG. 4, when the LF data is “0110”, the waveform data received by the vehicle relay 2 is as shown in FIG. Then, since 200 μs + α has elapsed since the start of reception of data of “bit 0”, the data being received is “bit 0”. Accordingly, the wireless LF data transmitted by the vehicle repeater 2 is set to the low state. This Low state continues for 350 μs for one cycle of “bit 0”.

  When 350 μs elapses after entering the Low state, 200 μs + α has elapsed since the start of the data of the bit next to “bit 0”, and the state of the LF data at this time is High, so the data being received is “Bit 1”. Accordingly, the wireless LF data transmitted by the vehicle repeater 2 is set to the high state. This High state continues for 700 μs for one cycle of “bit 1”.

  When 700 μs has passed since entering the High state, 200 μs + α has elapsed since the start of the data of the bit next to “bit 1”, and the state of the LF data at this point is High, so the data being received is “Bit 1”. Accordingly, the wireless LF data transmitted by the vehicle relay device 2 remains in the High state. In the same manner, wireless LF data as shown in FIG. 4B is generated, and modulated and transmitted based on the wireless LF data.

  When the portable repeater 3 receives and demodulates the wireless LF data by the second portable transmission / reception unit 3c, data as shown in FIG. 4C is obtained. If the demodulated data is Low, waveform data having a bit structure corresponding to “bit 0” is generated, and if it is High, waveform data having a bit structure corresponding to “bit 1” is generated. And since the pulse width corresponding to each bit is known, for example, as shown in FIG. 4 (c), the mobile relay 3 has “bit 1” from the first 700 μs portion even if the High state continues for a long time. The waveform data corresponding to “1” is generated, and the waveform data corresponding to “bit 1” is generated again from the next 700 μs. Therefore, the LF data shown in FIG. 4 (d) is reproduced. And the portable relay machine 3 transmits the reproduced | regenerated LF data toward the portable machine 4 in the 1st portable side transmission / reception part 3b.

  The control units 2a and 3a respectively perform the above-described determination processes and data generation / reproduction associated with the determination.

[Modification]
As described in the first embodiment and the second embodiment, the bit configuration of each bit differs depending on the vehicle type and the like. Therefore, since the High / Low pulse widths of the LF data are different, the timing for performing the 0/1 determination, the Low state after the determination, the time for which the High state is continued, and the like are also different. Therefore, it is preferable to store and hold these various conditions in association with the vehicle type or the like, and to set one of the conditions in use. Since conditions such as determination can be associated with communication parameters, it is preferable to set conditions together with communication parameters. The storage of the conditions associated with the vehicle type or the like may be stored separately from the communication parameters, but may be stored together with the parameters in the parameter storage unit 3f. In this way, conditions such as parameters and judgments can be added and changed in a lump, so management is easy, and lump can be performed as the setting switch 3g is operated. The consistency of parameters and conditions set in the machine etc. can be maintained.

[Transmission / Reception Switching Control of Transmitter / Receiver of Portable Repeater] Fourth Embodiment When there are a plurality of authorized portable devices 4, the authentication information storage unit 1c of the vehicle control device 1 stores the ID codes of the plurality of portable devices 4. To do. The vehicle control device 1 confirms the presence of the LF data, which is a response request signal, for each portable device 4 one by one in order in order to confirm the presence of the legitimate portable device 4. When the authentication with the regular portable device 4 is obtained, the actual engine starting process is performed.

  FIG. 5 shows the communication timing of LF data and RF data when two portable devices are registered. First, the vehicle control device 1 transmits a WAKE signal, and the portable device 4 that has received the WAKE signal returns an ACK signal. The control unit 1a of the vehicle control device 1 selects one of a plurality of ID codes stored in the authentication information storage unit 1c, and LF data that is a response request signal toward the portable device 4 having the selected ID code. Send. In FIG. 5, ID1 is selected, and LF data “response request signal = ID1 designation + challenge data” is transmitted.

  This portable device 4 (ID1) receives the LF data of “ID1 designation + challenge data”. The portable device 4 (ID1) recognizes that it is addressed to itself from the ID code in the LF data, and transmits response data. On the other hand, even if the portable device 4 (ID2) receives “ID1 + challenge data”, it does not transmit response data because it is different from its own ID code.

  If the vehicle control device 1 does not receive the response data from the portable device (ID1) even after a predetermined time t has elapsed after transmitting the LF data of “ID1 designation + challenge data”, the vehicle control device 1 has another ID code portable device ( Here, LF data of “ID2 designation + challenge data” is transmitted as a response request signal toward ID2). When the portable device 4 (ID2) receives the LF data of “ID2 designation + challenge data”, the portable device 4 (ID2) recognizes that it is addressed to itself from the ID code in the LF data and transmits response data.

  In the above example, an example in which two regular portable devices 4 are registered is shown, but in the case of three or more, LF data with ID designation is similarly transmitted one by one. And if response data is received, the vehicle control apparatus 1 will not transmit LF data of ID designation | designated after that.

  The transmission / reception unit is configured using one transmission / reception RFIC, and operates by appropriately switching between a reception state and a transmission state. For this reason, after receiving the above-mentioned ID determination LF data, it is switched to the transmission state and the response data is transmitted, but it takes several milliseconds as the transmission / reception switching time T.

  By the way, the vehicle relay machine 2 uses the RFIC for transmission / reception as the second vehicle side transmission / reception unit 2c. Therefore, the second vehicle-side transmitting / receiving unit 2c first transmits the relayed ID-designated wireless LF data in the transmission state, then switches to the reception state, and wirelessly transmits the response data transmitted from the portable repeater 3. Wait for reception of RF data. On the other hand, when there is no portable device corresponding to the relayed ID-designated wireless LF data, the next ID-designated wireless LF data is transmitted at an appropriate timing. Then, the second vehicle-side transmitting / receiving unit 2c is switched to the transmission state.

  The portable repeater 3 uses a transmission / reception RFIC as the second portable transmission / reception unit 3c. Therefore, the second portable side transmitting / receiving unit 3c switches to the transmission state after completing the reception of the wireless LF data from the vehicle relay device 2 in the reception state, and relays the RF data of the response data sent from the portable device 4 to the vehicle relay Relay towards Aircraft 2. That is, the portable repeater 3 confirms whether the portable device 4 is transmitting RF data, and if it is transmitted, the portable repeater 3 transmits to the vehicle relay device 2 as it is until the end of the RF data. When not transmitting, the 2nd portable side transmission / reception part 3c switches from the transmission state of RF data to the vehicle relay machine 2 to an LF data reception state immediately.

  In the present embodiment, the transmission / reception switching control is configured as follows in order to perform more quickly. For example, after the reception of the ID-designated wireless LF data is completed in the second portable side transmission / reception unit 3c in the reception state, the portable repeater 3 switches the second portable side transmission / reception unit 3c to the transmission state in preparation for a response. Then, when there is always response data, the reception carrier sense is performed once. When there is no carrier sense, transmission / reception is switched to the reception state, and when there is carrier sense, the transmission state is continued as it is.

  In accordance with this, the transmission / reception state of the first portable side transmission / reception unit 3b is also switched. In other words, the transmission state is initially set, and the LF data based on the wireless LF data received by the second portable side transmitting / receiving unit 3c is transmitted to the portable device 4 to perform relaying. After the transmission of the LF data is completed, the state is switched to the reception state, and the response data transmitted from the portable device 4 is waited for. When there is no carrier sense, transmission / reception switching is performed to set the transmission state, and when there is carrier sense, the reception state is continued as it is.

  When the response always exists, for example, as shown in FIG. 5, the response data is sent after at least the transmission / reception switching time T has elapsed after completion of the transmission of the ID-designated wireless LF data. Therefore, it is preferable to set the timing when a time T (for example, several msec) has elapsed from the completion of transmission or the timing with a predetermined margin added to T. In this way, the presence or absence of response data can be determined at a relatively early timing.

  In this embodiment, since carrier sense is always performed when there is a response, if there is no carrier sense, there is no portable device having the ID specified by the previously transmitted LF data, and response data is transmitted. It becomes clear that it does not come. Therefore, the second portable side transmitting / receiving unit 3c is switched to the reception state, so that the next ID-designated LF data sent from the vehicle control device 1 side can be reliably received. Since the presence or absence of response data can be determined at a relatively early timing after the reception of the ID-designated wireless LF data is completed, if no response data is sent, transmission / reception switching is performed with a margin, and the next ID is sent. It is possible to prepare for reception of designated wireless LF data.

  On the other hand, when there is a carrier sense, the response data transmitted from the portable device 4 is continuously received by the first portable side transmitting / receiving unit 3b and transmitted by the second portable side transmitting / receiving unit 3c. Even if the carrier sense reception determination is not performed at the beginning of the response data but at a slightly delayed timing, the first mobile-side transmitting / receiving unit 3b is in a receiving state, so that it can be received reliably. Since the second portable side transmitting / receiving unit 3c is in the transmission state, it can transmit and relay reliably.

  In the above-described embodiment, an example in which transmission / reception switching based on carrier sense reception determination is provided on the mobile relay 3 side has been described, but a similar function may be implemented on the vehicle relay 2 side.

  The problem to be solved in the present embodiment is as follows. For example, it is determined whether or not response data is received after the vehicle control device 1 transmits LF data and before a predetermined time t elapses. The conventional method of detecting the presence or absence of response data is to actually receive several bits of data and determine whether the data is the top data of the response data or the bit component of the response data. Yes. For example, if the bit configuration is as shown in FIG. 3, since 1 bit is 1.6 ms, for example, if 4 bits are viewed, it takes 6.4 ms. As described above, when the switching time T (for example, 2 to 3 ms) is taken into account, it takes 8.4 to 9.4 ms even if simply added. And since the fixed time t until the vehicle control apparatus 1 transmits the next LF data is about 10 ms, for example, when the portable repeater 3 detects the presence or absence of response data, and then performs transmission / reception switching, Considering that switching from the transmission state to the reception state takes several hundreds μm or more, there is a case where the switching is not completed within a certain time t. Even if 3 bits are viewed in order to provide time margin, for example, if it is difficult to determine due to disturbance or the like, it takes time until switching, and LF data retransmission has already started. In such a case, relaying cannot be performed properly, the portable device cannot recognize the LF data, the response data of the RF data is not transmitted, and the engine cannot be started. Furthermore, if the number of bits to be confirmed is small, it is impossible to accurately determine whether or not response data has been received. The bit configuration is not limited to that shown in FIG. 3, and the above problem becomes significant because the time of one cycle is also different. As described above, the conventional method for detecting the presence / absence of response data has a problem that, since the predetermined time t is short, it is not possible to see many bits in order to reliably detect the presence / absence.

  On the other hand, in the present embodiment, as described above, the presence or absence of response data is detected during a certain time t, and the time limit for switching the transmission / reception function is severe, but in this embodiment, the presence or absence of carrier sense Since it is determined in step 3, it can be determined in a short time.

[Modification]
In the above-described embodiment, when there is always response data, the presence / absence of reception carrier sense is determined once, but the present invention is not limited to this. For example, in order to increase the accuracy of the determination result, The carrier sense may be performed several times in succession, or may be performed a plurality of times at regular intervals. However, it is preferable to perform the operation once as in the embodiment because the determination can be made quickly.

[Correction of bit abnormality] (fifth embodiment)
In each of the embodiments and modifications described above, when LF data, wireless LF data, RF data, or wireless RF data relayed by the vehicle relay device 2 or the mobile relay device 3 is received by wireless communication, the received data is in a wireless communication state. This causes a problem that the bit configuration changes. Since both the LF data and the RF data are wireless communications, it is inevitable to receive disturbance. In particular, when the communication distance becomes long and the allowable range where communication is possible is reached, bit abnormality is likely to occur.

  Each repeater sets the received data and performs sampling at a sampling cycle, and sequentially transfers and transmits the acquired data. Therefore, when the bit configuration of the regular “bit 1” is such that, for example, as shown in FIG. 6A, High continues for 500 μs and then Low continues for 200 μs, for example, as shown in FIG. 6B. Let us consider a case where an abnormality occurs such that it once falls to Low before 500 μs has elapsed and then returns to High. Then, the relayed wireless RF data has a data structure that has a phenomenon of once going low as shown in FIG. Then, since the vehicle control apparatus 1 receives the received portion of data as response data, the vehicle control apparatus 1 cannot recognize “1” and cannot recognize a normal waveform in the first place. Therefore, the engine cannot be started. Although not shown in detail, if there is an error in transmission / relay of LF data, the portable device 4 cannot receive regular LF data, and as a result, cannot transmit in response, and the engine cannot be started. There are challenges.

  On the other hand, in the present invention, since the length and pattern of a normal waveform are known, even if there is a bit abnormality, if there is a pattern, a normal waveform is output. More specifically, the original state is maintained without switching even when there is a High / Low switching that cannot be made from the pattern configuration. For example, in the bit configuration shown in FIG. 3, in the case of High start data, High continues until 200 μ in both cases of 0/1. Therefore, control is performed so as to maintain High even if the signal falls to Low before 200 μs has elapsed. For example, as shown in FIG. 6B, in the case of LF data, if High continues even if it exceeds 200 μs, a waveform representing “bit 1” is obtained, so that it falls to Low before 500 μs elapses. Even high is maintained. The high state is maintained until the next low pulse is input.

  As a result, even if the wireless LF data received by the portable repeater 3 is, for example, as shown in FIG. 6B, a low pulse due to noise once occurs at the 300 μs point after the start of High, the portable repeater 3 The high state is maintained until a low pulse is input. In the example of FIG. 6B, since the next low pulse is at the time of 500 μs which is the normal inversion time, the LF data transmitted from the portable repeater 3 is normal as shown in FIG. It becomes a waveform. Therefore, the portable device 4 can recognize the LF data, and can return a response when addressed to itself.

  In the above description, the case where the low pulse is generated from the high state has been described. However, the low state is similarly maintained even when the high pulse is generated at a timing that is not originally generated in the low state. In the illustrated example, “bit 1” of the LF data has been described, but “bit 0” and RF data are similarly processed.

  Therefore, even if a pulse that reverses at an unexpected location once occurs due to noise or the like, the waveform that is relayed and transmitted is the same as the normal waveform. As a result, the portable device 4 and the vehicle control device 1 can be prevented from making an abnormality determination.

  The determination of whether the received data is “bit 0” or “bit 1” may be made at the timing of normal waveform H / L inversion, but with a predetermined margin (α). And good. For example, the determination of “bit 1” shown in FIG. 6 is not performed immediately when it exceeds 200 μs, but a predetermined margin (α) such as “200 μs + α” may be provided. In a communication environment or the like, the waveform of bit 0 may not go low at the time of 200 μs, and may go low with a little time lag. In such a case, the waveform of “bit 0” may be normally relayed by providing a predetermined margin (α).

  In the present embodiment, the above correction processing is performed by the side that received the long-distance transmission signal. Specifically, the portable relay device 3 that has received the wireless LF data sent from the vehicle relay device 2 and the vehicle relay device 2 that has received the wireless RF data sent from the portable relay device 3 perform the processing. This is because the communication between the vehicle repeater 2 and the portable repeater 3 is long-distance transmission, and the user carrying the portable repeater 3 may be away from the vehicle and have a long communication distance. The possibility of occurrence of is increased. Therefore, the engine can be started even when such an abnormality occurs.

  On the other hand, the vehicle control device 1 and the vehicle relay device 2 are both installed at predetermined positions of the vehicle, are relatively close to each other, and are usually arranged in consideration of a communicable distance at the time of installation. The event is difficult to occur. Moreover, since both the portable relay device 3 and the portable device 4 are relatively close because they are carried by the user, the above-described event is unlikely to occur. Further, if the distance is far enough to cause a tentative event, it can be dealt with by bringing them closer together.

  Since the correction according to the present embodiment is a relatively strong correction such that the High state and the Low state are forcibly continued after a certain time has elapsed, the vehicle relay is relatively likely to occur. The long distance communication between the machine 2 and the portable repeater 3 is performed.

  In the present embodiment, the original state is maintained without being inverted even if a pulse that is inverted once is input. Thus, for example, when a pulse that is inverted a plurality of times (for example, twice) in the same state (for example, the High state) (see FIG. 6C), the state is inverted at the time of the second inversion pulse ( In the example shown in the figure, High to Low). Therefore, in this case, waveform data that falls to Low before 500 μs has elapsed is transmitted. Thus, in the case of multiple occurrences, a normal waveform is not output. Since this is a relatively strong correction, the correction target is limited to one abnormal pulse, so that transmission of a non-normal signal originally as a normal waveform is suppressed.

  The above-described noise removal processing is preferably performed by the control unit 2a and the control unit 3a configured by the MPU because the processing can be performed appropriately.

[Modification]
In the embodiment described above, the correction is limited to the generation of abnormal pulses up to one time. However, the correction may be made a plurality of times. In this way, it is possible to start the engine at a location that is separated by a long distance. Even if forcible correction is performed and LF data or RF data different from the original data is relayed, it may be finally eliminated on the vehicle side.

  It is preferable that the number of times can be changed by user setting. In this way, correction can be made under appropriate conditions depending on the user's usage environment and situation.

  In the above-described embodiment, correction is performed on a waveform transmitted by long-distance communication. However, the present invention is not limited to this and may be applied to other communications. In that case, for example, it may be applied to communication between the portable device 4 and the portable relay device 3. The portable device 4 and the portable relay device 3 are both held by the user, and the distance between the two can be managed and adjusted appropriately by the user. However, for example, if the communicable distance is shortened due to, for example, exhaustion of the built-in battery, or both of them are kept in a pocket of clothes or a bag worn by the user, both of them move relative to each other, The distance may be longer than desired. Even in such a case, it is preferable that the engine can be started by performing the correction in the above-described embodiment.

  In the embodiment described above, the correction is performed by the control unit, but a dedicated circuit or the like may be provided. By providing a dedicated circuit, processing can be performed more quickly. As described in the fourth embodiment, transmission and reception of LF data and RF data are limited in time, and there is a problem that it is desired to shorten the time required for relaying as much as possible. Therefore, by providing a dedicated circuit, correction can be performed in a short time, and a response can be returned with a margin within a certain time t.

  As described in the first embodiment and the second embodiment, the bit configuration of each bit differs depending on the vehicle type and the like. Therefore, since the pulse widths of High / Low are different, the correction conditions (for example, maintaining from the start to 0.00 μs, maintaining from 0.00 μs to ΔΔ μs, etc.) are also different. Therefore, it is preferable to store a correction condition according to the vehicle type or the like in association with the vehicle type or the like, and set one of the conditions for use. Since the correction condition can be associated with the communication parameter, it is preferable to set the condition together with the communication parameter setting. Further, the correction condition associated with the vehicle type or the like may be stored separately from the communication parameter, but may be stored together with the parameter in the parameter storage unit 3f. In this way, addition and change of parameters and correction conditions can be performed in a lump, so management is easy, and lump can be performed as the setting switch 3g is operated. The consistency of the parameters and correction conditions set in the above can be maintained.

[Dualization of RFIC] (Sixth embodiment)
In each of the above-described embodiments and modifications, the transmission / reception unit is configured by one transmission / reception RFIC, and relaying is performed by appropriately switching the transmission / reception state. In this embodiment, each transmission / reception unit mounted on the vehicle relay unit 2 and the portable relay unit 3 is configured by a transmission-only RFIC and a reception-only RFIC, and each IC performs transmission / reception exclusively.

  For example, as described in the fourth embodiment, when transmitting / receiving LF data, wireless LF data, RF data, and wireless RF data, a transmission / reception switching operation occurs in each transmitting / receiving unit. The transmission / reception switching operation is required to be quick, since the vehicle control device 1 must transmit the LF data and receive the response data from the corresponding portable device 4 within a predetermined time t. Is done. And when the fixed time is further shortened, the demand becomes higher. Then, there is no RFIC that can be handled, or even if there are, there are few types, and the scope for selection becomes narrow. Furthermore, even if the switching operation time satisfies the requirement, it does not correspond to the radio frequency band to be used, and there is a possibility that a system configuration that satisfies the specifications cannot be made.

  Therefore, in this embodiment, by mounting dedicated RFICs for transmission and reception, switching between transmission and reception becomes unnecessary, and communication control can be performed easily. Further, by performing transmission and reception with a dedicated RFIC, reception processing and transmission processing can be performed simultaneously. Therefore, for example, as shown in FIG. 5, normally, after completing the WAKE from the vehicle control device 1, the first vehicle-side transmitting / receiving unit 2b is switched to the transmission state and returns ACK. In this embodiment, the WAKE reception is performed. ACK is returned on the way. As a result, the time from when the vehicle control device 1 transmits WAKE until the reception of ACK is completed is shortened. And the vehicle control apparatus 1 transmits LF data of predetermined ID designation | designated with reception of ACK, The transmission start which concerns is performed faster compared with each embodiment and modification which were mentioned above. Furthermore, since there is no waiting time for transmission / reception switching required for performing each relay, there is a time margin in this respect. Furthermore, the ACK is not relayed from the portable device 4 but is transmitted by the vehicle relay device 2 itself. Thereby, the time can be further shortened. Further, since the RFIC is dedicated to reception and transmission, it can be designed without considering the switching time, and therefore, it is possible to design at a frequency that increases the reliability of wireless communication.

  Each repeater transmits and receives at different frequencies. The transmission / reception channels are not adjacent to each other so that there is no mutual interference.

  In each of the embodiments and modifications described above, LF data communicates using a high frequency (short bit length), for example, 900 MHz, and RF data communicates using a low frequency, for example, 400 MHz. This is because when the frequency is high, the bit rate is high, so the switching from the transmission state to the reception state is quick, and the capture return is also quick. Therefore, in order to keep the time constraint, 900 MHz is used when the switching type is used. For example, LF data may be communicated at 400 MHz by using two RFICs and making them dual as in this embodiment. 400 MHz is preferable because the bandwidth is narrow and stable communication can be performed without interference with other signals.

  On the other hand, in this embodiment, since the RFIC is dualized, power consumption increases. For this reason, a battery with a large capacity is required in the portable repeater 3. For this reason, the case for accommodating the mobile relay device 3 is also increased.

  Therefore, it is preferable that the case be provided with a space in which the portable device 4 can be stored so that the portable relay device 3 and the portable device 4 can be carried together. The integration enables the mobile relay device 3 and the mobile device 4 to be arranged at a short distance, so that communication can be reliably performed.

  In addition, since the battery built in the portable relay device 3 has a large capacity, a connection portion with a mobile device may be provided so that it can be used as a mobile battery. The connection part includes, for example, a terminal part to which a cable can be connected. When applied to a mobile battery, the battery may be a secondary battery.

[Separation determination function] (Seventh embodiment)
As described in the above-described embodiments and modifications, the mobile relay device 3 relays and transmits LF data. After the mobile device 4 receives the LF data, the ID code included in the LF data is the self code. If it matches, the RF data (response data) is transmitted.

  Then, the RF data (response data) is relayed from the mobile relay device 3 to the vehicle relay device 2 and sent to the vehicle control device 1. When the vehicle control device 1 receives a response from the regular portable device 4, it starts the engine.

  By the way, LF data is transmitted at a first frequency, and RF data is transmitted at a second frequency different from the first frequency. The second frequency is higher than the first frequency, and the communicable distance of RF data using the second frequency is also long. As an example, the first frequency is 134 kHz and the second frequency is 314 MHz. Then, the communicable distance of the LF data is as short as 1 to 2 m. If the distance is too far, the portable device 4 may not be able to receive the LF data transmitted from the portable relay device 3.

  As one of the factors when the engine start fails, the portable relay device 3 and the portable device 4 are separated from each other, and the LF data transmitted from the portable relay device 3 cannot be received. However, the communicable distance of the LF data varies depending on, for example, the user's way of holding the portable relay device 3 and the surrounding environment. Therefore, when the user fails to start the engine, the portable device 4 and the portable relay device 3 There is a problem that it is difficult to understand whether the failure is caused by the fact that communication is not possible at a distance or if the failure is other than that.

  In addition, a method of increasing the radio wave intensity can be adopted in order to ensure communication even at a certain distance, but if the radio wave intensity is increased, it will fly too much and cause a malfunction. For example, in a situation where a spare portable device is placed in a room, if a person who does not have the portable device 4 operates the portable relay device 3 by mistake, the engine starts, which is not preferable. In addition, if the radio field intensity is increased, battery consumption increases, so there is also a demand for suppression. For this reason, the communicable distance is shortened, and the above-mentioned problem becomes remarkable.

  FIG. 7 shows a seventh embodiment of the present invention. The present embodiment is for solving such a problem, and includes an isolation determination mode in which the user determines whether or not the mobile relay device 3 and the mobile device 4 are separated. In this isolation determination mode, the mobile relay 3 is provided with a normal LF data information storage unit 3h. The control unit 3a stores the LF data when the engine has been successfully started as normal LF data in the normal LF data information storage unit 3h.

  When the separation determination mode is set, the control unit 3a transmits the normal LF data stored in the normal LF data information storage unit 3h by the first portable side transmission / reception unit 3b. When the portable device 4 receives the normal LF data, the portable device 4 transmits RF data (response data) because it is the same as the ID-designated LF data sent from the vehicle control device 1. The control unit 3a waits for reception of such RF data (response data). Then, when the reception of the RF data (response data) is completed, the control unit 3a notifies the notification unit 3e that it exists in a communicable range. On the other hand, when the control unit 3a fails to receive the RF data (response data), the control unit 3a notifies the notification unit 3e that communication is not possible.

  The user can know from the notification result of the notification unit 3e whether or not the portable relay device 3 and the portable device 4 are within an appropriate range in which communication is possible. Therefore, for example, if the engine is not started when the mobile relay device 3 is operated remotely to start the engine, communication between the mobile relay device 3 and the mobile device 4 is not possible in the first place, or other communication system Can be easily understood. In the present embodiment, it can be confirmed without starting the engine.

[Modification]
When there are a plurality of regular portable devices 4, the vehicle control device 1 sequentially transmits LF data designating each authentication information (ID code) of the plurality of registered portable devices 4. Accordingly, if the ID code included in the first transmitted LF data does not match the own one, the portable device 4 does not transmit the RF data (response data), so the portable relay device 3 includes a different ID code. Relay LF data. When RF data (response data) is finally sent from the portable device 4 and engine start is successful, the LF data at the time of success may be stored in the normal LF data information storage unit 3h. By storing the LF data for the ID code of the portable device 4 that is frequently used by the user, the separation determination can be performed immediately.

  In addition, when a plurality of LF data is relayed, all the LF data relayed so far is LF data including a regular ID code stored in the vehicle control device 1, so that all the LF data is converted into a normal LF. It may be stored in the data information storage unit 3h. In this case, when the portable device 4 used by the user is not fixed, the separation determination may be performed regardless of which portable device 4 is used.

  Further, the normal LF data stored in the normal LF data information storage unit 3h may be only the LF data when the response data is received, but it is preferable to store all the LF data sent so far. . In this way, even if the portable device carried by the user changes, the isolation determination can be performed.

  When all the LF data is stored, for example, the LF data for all the authentication information stored in the vehicle control device 1 by operating the operation unit 3d of the mobile relay device 3 without the mobile device. Can be acquired and stored. By doing so, it is only necessary that the separation determination can be performed for any portable device carried thereafter.

  Moreover, the mobile relay device 3 is good to be provided with the function which alert | reports the registration number of normal LF data stored in the normal LF data information storage part 3h. In this way, it is interesting to know how many legitimate portable devices are registered in the vehicle control device 1 by collecting LF data corresponding to all authentication information registered in the vehicle control device 1 described above. .

  When the mobile relay device 3 receives the response data when operating the operation unit 3d, the notification unit 3e may notify the fact. If it does in this way, it turns out that communication between the portable relay machine 3 and the portable machine 4 is ensured, and when the engine cannot be started in that state, it turns out that it is a failure. In this case, for example, it is preferable to make a sound such as “pipi” because the user can understand without watching the notification unit 3e.

   In the embodiment and the modification described above, the LF data when the engine is started is stored and the separation between the portable relay device 3 and the portable device 4 is determined, but the RF data (response) when the engine is started is determined. Data) is stored, and RF data check may be performed in the same manner. As the determination of the presence or absence of RF data, RF data carrier sense, determination of the first bit, or the like may be used.

[Integrated structure of portable device and portable repeater] (Eighth embodiment)
8 and 9 show an eighth embodiment of the present invention. In this embodiment, the portable device 4 and the portable relay device 3 are integrated. The mobile relay device 3 includes a display unit 11, an operation button 12, and a lid unit 13 on the upper surface 10 a of the case body 10. As shown in FIG. 9, the lid 13 closes the storage recess 10 b provided to open on the upper surface 10 a of the case body 10. In the present embodiment, the lid portion 13 is slid along the upper surface 10 a of the case main body 10 to be attached and detached. Although not shown, in the case body 10, for example, various circuits and devices such as the control unit 3a, the first portable side transmission / reception unit 3b, the second portable side transmission / reception unit 3c, and the parameter storage unit 3f are mounted. . The display part 11 comprises the alerting | reporting part 3e in each embodiment mentioned above, for example. The operation buttons 12 are an engine operation switch, a vehicle door operation switch, and the like, and constitute, for example, the setting switch 3g in each embodiment described above. Further, the lid 13 is provided with an auxiliary switch 13a. The auxiliary switch 13a is an operation part of a push button type switch.

  In the present embodiment, the portable device 4 is accommodated in the accommodating recess 10b of the portable relay device 3, but the entire portable device 4 is not mounted as it is, but the internal substrate assembly 21 of the portable device 4 is accommodated. The internal substrate assembly 21 includes a push button type switch 21a on the surface. When the internal substrate assembly 21 is stored in the storage recess 10b and the lid portion 13 is closed, as shown in FIG. 8B, the switch 21a of the internal substrate assembly 21 and the auxiliary switch 13a of the lid portion 13 are moved up and down. Arrange them so that they overlap. Thereby, when the auxiliary switch 13 a is pressed, the auxiliary switch 13 a presses the switch 21 a of the internal board assembly 21. Therefore, the user can perform a predetermined switch operation on the portable device 4 by operating the auxiliary switch 13a.

  Moreover, as shown in FIG.8 (c), there exist some which stored the mechanical key 22 of the vehicle in the portable device 4. For example, when the engine using the portable device 4 cannot be started due to a battery exhaustion or failure of the portable device 4, the mechanical key 22 is inserted into the key cylinder of the ignition and rotated to rotate the engine. Is used to start / stop, etc. Therefore, in the present embodiment, a hole portion for inserting the mechanical key 22 is provided in the case main body 10, and the mechanical key 22 can be set in the hole portion. Thereby, the user can carry the mechanical key 22 by carrying the portable repeater 3 together.

  When mounting the internal substrate assembly 21, for example, as shown in FIG. 9A, the user or the like disassembles the portable device 4 and removes the internal substrate assembly 21. On the other hand, a user etc. remove the cover part 13 of the portable relay machine 3, and open the accommodation recessed part 10b, as shown in FIG.9 (b). Next, the user or the like inserts the internal substrate assembly 21 into the storage recess 10b with the auxiliary switch 13a up as shown in FIG. 9C or the like. Thereafter, the user or the like attaches the lid portion 13 to the case body 10, thereby configuring the mobile relay device 3 in which the internal substrate assembly 21 shown in FIG. 8A is integrated.

  In this embodiment, since the portable device 4 and the portable relay device 3 are integrated, the portable device 4 becomes compact and does not become bulky when put in a pocket or the like. In particular, since the internal substrate assembly 21 is taken out from the portable device 4 and attached, the internal space of the storage recess 10b can be reduced, and the overall shape of the portable relay device 3 integrated with the portable device 4 can be increased. It is good because it can be suppressed. In addition, the portable device 4 and the portable relay device 3 are arranged at a short distance so that communication can be performed reliably. Regarding this point as well, since there is no case of the portable device 4, the distance between the portable relay device 3 and the portable device 4 can be made closer.

  In the present embodiment, the internal substrate assembly 21 includes the switch 21a and is applied to the switch 13a that can be pressed by the auxiliary switch 13a of the lid portion 13. However, for example, the switch 21a is structurally not exposed on the upper surface. In the case where the auxiliary switch 13a cannot be pressed or the switch 21a is slidable and cannot be pressed by the auxiliary switch 13a of the lid portion 13, for example, the switch 21a is exposed to the outside from the opening of the case body 10. The switch 21a may be directly operable.

[Variation 1 of relay waveform]
In the above-described embodiment, for example, the relay between the vehicle relay device 2 and the mobile relay device 3 is performed by transmitting the wireless LF data converted based on the LF data. Specifically, in the third embodiment, for example, if “bit 0”, one cycle is converted to low, and if “bit 1”, one cycle is converted to high and modulated with the data. . As described above, the method of converting the wireless LF data into a pulse waveform different from the pulse width of the LF data is not limited to the above-described method, and various correspondences are possible. An example is as follows.

  For example, edge signals are generated at the rise and fall of LF data. The wireless LF data is data in which the edge signal is generated at an appropriate timing from the Low state. The edge signal is, for example, a single pulse having a predetermined width. For example, when the LF data is “0110”, the waveform data received by the vehicle relay device 2 is as shown in FIG. Then, the rising edge of “bit 0” is detected, an edge signal having a predetermined width (for example, 50 μs) is inserted, and then the Low state is maintained. When this Low state continues for 350 μs, a fall from “High” of “Bit 0” to Low occurs, so that the Low state is maintained after the edge signal is inserted in response to the fall.

  When the Low state continues for 100 μs, the LF data is switched to the next “bit 1” High. With the rise at this time, an edge signal is inserted. Thereafter, by repeating, the wireless LF data as shown in FIG. 10B is generated, and modulated and transmitted based on the wireless LF data. According to this method, two edge signals are output per bit data, and wireless LF data having a long Low state is obtained.

  When the mobile relay device 3 receives the wireless LF data shown in FIG. 10 (b), the portable relay device 3 is set to High with the first edge signal, and is maintained High until the next edge signal comes. When the next edge signal is detected, the signal is set to Low, and is maintained until the next edge signal comes. Thus, every time the edge signal is detected, the original LF data can be reproduced as shown in FIG. 10C by alternately switching between High and Low.

[Variation 2 of relay waveform]
In the first modification described above, the edge signal is inserted at each of the rising and falling edges of the LF data. However, the edge signal may not be inserted at the falling edge. In the case of “bit 1” with a high pulse width, a single pulse is inserted while the high state is maintained. In “Bit 0”, High falls to Low after 200 μs has elapsed, and in “Bit 1”, High continues for 500 μs. Therefore, the timing of inserting a single pulse is, for example, 200 μs after the rise.

  Thereby, the wireless LF data in the case of “bit 0” has a pulse waveform that is low until 350 μs elapses after the rising edge of the LF data, with a single pulse having a predetermined width inserted. Further, in the case of “bit 1”, the wireless LF data is inserted with a single pulse having a predetermined width along with the rising edge of the LF data, and then the Low state is maintained. When 200 μs has elapsed from the rising edge, a pulse having a predetermined width is inserted. Thereafter, the pulse waveform is maintained in the low state.

  Therefore, the mobile relay device 3 that has received the wireless LF data can detect that the data is “bit 0” when the next pulse does not occur even after 200 μs has elapsed after detecting a single pulse, and 200 μs has elapsed. When the next pulse is generated at this time, since it is understood that the data is “bit 1”, the original LF data can be reproduced.

  The control unit 2a of the vehicle repeater 2 for performing the process of generating such wireless LF data has a function of executing a transmission data conversion flow shown in FIG. That is, the control unit 2a monitors the L / H state of the LF data and determines whether there is a rising edge (ST1). When the rising edge is detected (ST1 is Yes), the controller 2a outputs a 40 μs pulse (ST2).

  Next, the control unit 2a makes a logical determination as to whether or not the current data is “bit 0” (“bit 1”) (ST3). When the logical determination is “bit 0”, the control unit 2a returns to ST1 and detects the next rising edge. Thereby, when the LF data is “bit 0”, there is only a pulse output of 40 μs at the rising edge. On the other hand, when the logical determination is “bit 1”, the control unit 2a outputs a 40 μs pulse (ST4). Thereafter, the control unit 2a returns to ST1 and detects the next rising edge. As a result, when the LF data is “bit 1”, a 40 μs pulse is output twice between the rising edge and the middle. In the logic determination of ST3, when 350 μs has elapsed from the rising edge, it is determined whether it is High or Low.

  On the other hand, the control unit 3a of the mobile relay device 3 for performing the process of reproducing the LF data from the received wireless LF data has a function of executing a transmission data conversion flow shown in FIG. 11B, for example. That is, the control unit 3a monitors the L / H state of the wireless LF data and determines whether there is a rising edge (ST11). When the rising edge is detected (ST11 is Yes), the control unit 3a changes to High (ST12).

  Next, the control unit 3a determines whether the current data is “bit 1” (“bit 0”) from the presence or absence of a rising edge (ST13). When the determination result is “bit 0” (ST13 is No), the control unit 3a changes the output to Low (ST14), returns to ST1, and detects the next rising edge. On the other hand, when the determination is “bit 1” (ST13 is No), the control unit 3a maintains the High state for a certain time (ST15). After a predetermined time has elapsed, the control unit 3a changes the output to Low (ST16), returns to ST11, and detects the next rising edge. In ST13, it is determined whether or not there is a rising edge when 350 μs elapses from the rising edge of ST11. You may make it see whether it is High or Low instead of a rising edge.

  The processing functions described above will be described with specific examples. For example, when the LF data is “0110”, the waveform data received by the vehicle relay 2 is as shown in FIG. The control unit 2a detects the rising edge of “bit 0” of the LF data, inserts a pulse having a predetermined width (for example, 40 μs), and then maintains the low state. Since the LF data when 350 μs has elapsed from the detection of the rising edge is Low, the branch determination in ST3 is Yes, continues Low, and waits for the next rising edge.

  Then, with the rise of the next “bit 1” of the LF data, a 40 μs pulse is inserted, and then the Low state is maintained. Since the LF data when 350 μs elapses from the detection of the rising edge is High, the branch determination in ST3 is No, a 40 μs pulse is inserted, and then the Low state is maintained. This Low state continues until the next rise of “bit 1”. Thereafter, similarly, when LF data “0110” is received, wireless LF data as shown in FIG. 12B is generated. 12B, the wireless LF data of the system is transmitted from the vehicle repeater 2 and received by the portable repeater 3.

  The mobile relay device 3 reproduces the LF data shown in FIG. 12C by executing the processing flow of FIG. 11B on the received wireless LF data. That is, the control unit 3a detects the rising edge of the wireless LF data and sets it to High. This High state continues until the next branch determination process (ST13) is performed. Then, after 200 μs has elapsed from the rise, there is no rising edge and it remains Low, so the branch determination in ST13 is No and the output is Low. This Low state continues until there is a next rising edge. Thereby, the LF data of “bit 0” is reproduced.

  Further, along with the detection of the rising edge, the control unit 3a outputs High. Since the wireless LF data has a rising edge after 200 μs has elapsed from the rising edge, the branch determination in ST13 is Yes, and the output is set to Low after maintaining High for a certain time. This Low state continues until there is a next rising edge. Thereby, the LF data of “bit 1” is reproduced. By repeating thereafter, the LF data “0110” is reproduced as shown in FIG.

[Variation 3 of relay waveform]
In Modification 1 and Modification 2 described above, an edge signal is output at the rising edge of LF data or the like. However, in this modification, the wireless LF data of the relay waveform is based on the duration of the high state of the LF data. Is generated. As described above, as an example of the bit configuration of LF data, “bit 0” is 200 μs high and 150 μs low (see FIG. 3A), and “bit 1” is 500 μs high and 200 μs high. Low (see FIG. 3B). As described above, the bit configurations constituting “bit 0” and “bit 1” have high and low pulse widths, for example, the high state of the LF data sent from the vehicle control device 1 is 200 μs. If it continues longer than this, it is “bit 1”. In this modification, the vehicle repeater 2 generates wireless LF data having a bit configuration with a pulse width different from the high and low pulse widths of “bit 0” and “bit 1” of the received LF data, and Radio transmission is performed toward the repeater 3. The bit configuration of different pulse widths is, for example, that the high pulse width of “bit 1” of the wireless LF data is the same as the high pulse width of “bit 0” of the LF data, and the “bit 0” of wireless LF data is The high pulse width is set longer than the high pulse width of “bit 1” of the wireless LF data. Then, the Low pulse width of the wireless LF data is set to a value in which the length of one cycle including High and Low is the same for the LF data and the wireless LF data.

  By doing in this way, the mobile relay device 3 that has received the wireless LF data can discriminate between “bit 0” and “bit 1” from the length of High, and the rising edge of Low to High is not delayed in time. It may be the same as the LF data.

  As an example of the bit configuration of the wireless LF data, “bit 0” is set to High of 200 μs + α and Low of 150 μs−α. Here, α is set to a value smaller than (500−200) μs, for example, 100 μs. “Bit 1” has High of 200 μs and Low of ((500 + 200) −200) μs.

  Further, the wake signal and the STOP signal transmitted from the vehicle control device 1 also have pulse widths. For example, in the WAKE signal, Low continues for 180 μs after High continues for 2 ms. The STOP signal is a single pulse having a High of 180 μs. In order to distinguish these WAKE signal and STOP signal from “bit 0” and “bit 1” of the LF data, when the vehicle repeater 2 receives WAKE, it becomes a signal of High 200 μs + α + β and Low 2 ms + 180 μs− (200 μs + α + β). The data is converted and wirelessly transmitted to the portable repeater 3. Further, when the vehicle relay device 2 receives the STOP signal, High is converted into a 180 μs + γ signal and wirelessly transmitted to the mobile relay device 3. Here, γ is less than 20 μs.

The high level of each signal after the above conversion is WAKE signal (200 μs + α + β)> bit 0 (200 μs + α)> bit 1 (200 μs)> STOP signal (180 μs + γ: γ <20 μs). Thereby, the portable repeater 3 can identify the WAKE signal, bit 0, bit 1, and STOP signal from the length of High. The total value of each signal composed of a combination of High and Low is equal to the total value of the signal before conversion.
In order to perform the above processing, the control unit 2a of the vehicle relay device 2 executes the processing flow shown in FIG. 13, and the control unit 3a of the mobile relay device 3 executes the processing flow shown in FIG. As shown in FIG. 13, the control unit 2a waits for an input signal sent from the vehicle control device 1 to rise from Low to High (ST21).

  When rising to High (Y in ST21), the control unit 2a outputs a signal for continuing High for 200 μs + α + β and continuing Low for 2 ms + 180 μs− (200 μs + α + β) (ST22). The second vehicle side transmission / reception unit 2 c wirelessly transmits this signal to the mobile relay device 3. Similarly, the second vehicle-side transmitting / receiving unit 2c wirelessly transmits an output signal output from the control unit 2a shown below to the mobile relay device 3.

  Next, the control unit 2a waits for the input signal to rise from Low to High (ST23). When the signal rises to High (Y in ST23), the control unit 2a sets the output signal to High (ST24). The control unit 2a determines whether or not the High duration time of the input signal falls to Low in 180 μs (ST25). When the branch determination in ST25 is Y, the control unit 2a drops to Low after a set time less than γ μs has elapsed. As a result, the control unit 2a outputs a STOP signal that falls to Low after 180 μs + γ has elapsed since it was set High in ST24.

  When the branch determination in ST25 is Y, the control unit 2a determines whether or not the input signal High duration has exceeded 200 μs (ST27). When the duration exceeds 200 μs, it is a bit 1 signal, and when it falls low without exceeding 200 μs, it is a bit 0 signal. Therefore, when the branch determination in ST27 is Y, the control unit 2a sets the output signal to Low and maintains Low for (500 + 200) −200 μs (ST28). When the branch determination in ST27 is N, the control unit 2a maintains the High state by α, then sets the output signal to Low, and maintains Low for 150 μs−α (ST28).

  As shown in FIG. 14, the control unit 3a of the portable repeater 3 waits for the input signal sent from the vehicle repeater 2 to rise from Low to High (ST31). When rising to High (Y in ST31), the control unit 3a outputs a signal for continuing High for 2.0 ms and continuing Low for 180 μs (ST32). The first portable side transmitting / receiving unit 3 b wirelessly transmits this signal to the portable device 4. Similarly, the first portable transmission / reception unit 3b wirelessly transmits an output signal output from the control unit 2a shown below to the portable device 4.

  Next, the controller 3a waits for the input signal to rise from Low to High (ST33). When the signal rises to High (Y in ST33), the control unit 3a sets the output signal to High (ST34). The control unit 3a determines the high duration of the input signal (ST35). When the determination in ST35 exceeds 200 μs, the control unit 3a sets the output signal to Low (ST36). When the determination in ST35 is 200 μs, the control unit 3a maintains the output signal at High (500-200) μs, and then sets the output signal to Low and Low (ST37). When the determination in ST35 is 180 μs + γ, the control unit 3a sets to Low (ST38). When the processing of ST38 is executed, the high duration of the STOP signal is 180 μs + γ, which is longer by γ than the high duration of the STOP signal output from the original vehicle control device 1 before conversion. Since the STOP signal is a single high pulse and continues to be low thereafter, the accuracy required for the duration time is lower than that of, for example, a 1-bit or 0-bit signal. Is done. In addition, γ is a time to be recognized as a STOP signal.

  Also, in each processing step of FIG. 14 (excluding ST38), the timing for switching Low / High of the output signal is delayed by γ based on the signal received by the mobile relay device 3, and the processing of ST38 is set to Low without delaying γ. You may make it perform control to perform. In this case, γ is set within the time when the communication by relay is completed within the time allowed by the delay time from when the vehicle control device 1 transmits LF data until it receives RF data.

  Further, in the process of ST28 shown in FIG. 13, instead of continuing Low, the signal may be changed and data may be transmitted. In the above-described modification, the mobile repeater 3 generates an output signal based on the High duration of the received input signal, and the Low reception period is a fixed period Low regardless of the L / H status of the input signal. Is output. Therefore, in the process of ST28, instead of continuing Low, by transmitting appropriate data during the Low period, another data is transferred together with the transfer of LF data sent from the vehicle control device 1. Enabled to send. Since the Low period is 500 μs, for example, if the signal has a bit configuration of bit 1 (High 20 μs, Low 10 μs) and bit 0 (High 10 μs, Low 20 μs), for example, 8-bit data can be transmitted. Since LF data normally contains at least one bit 0 data, it is transmitted using the bit 0 interval. This 8-bit data has a meaning in one transmission and a meaning in multiple transmissions. That is, when the data is long, it is divided into a plurality of times for transmission.

  Further, when data is transmitted using the Low period in this way, the mobile relay device 3 performs the data reception process after performing the process of ST36 of FIG. The reception process is, for example, receiving the data and executing a predetermined process based on the received data.

  The vehicle relay machine 2 is connected to, for example, a sensor installed in the vehicle, various devices / equipment, and has a function of acquiring information related to the vehicle. Then, wireless transmission is performed toward the portable repeater 3. And the portable relay machine 3 performs the predetermined | prescribed process based on the received data. The predetermined processing is, for example, informing the user of information on the vehicle based on the received data using the notification unit 3e of the mobile relay device 3 or changing the setting of the mobile relay device 3. There is. Since the vehicle relay machine 2 is supplied with power from the vehicle battery, for example, the vehicle voltage / capacity of the vehicle before starting the engine may be detected, and the detected upper part may be transmitted as one of the information about the vehicle. . In this way, it is possible to know the state of the battery before starting the engine and to check the deterioration status and the like.

[Other variations of relay waveform]
The wireless LF data to be converted based on the LF data is not limited to the first and second modifications described above, and various conversions are possible. As a simple example, there is a waveform obtained by inverting High / Low.

  Furthermore, in the above-described modification, an example in which the relay waveform of LF data is changed has been described. However, the present invention is not limited to this, and WAKE and STOP are similarly changed and relayed, and reproduced on the receiving side. It is good to have the function to do.

  15 and 16 show a ninth embodiment. In the embodiment and the modification described above, in the LF data, High and Low as shown in FIGS. 3A and 3B constitute “bit 0” and “bit 1” with a combination of predetermined pulse widths, respectively. It explained on the assumption. The actual LF data output from the vehicle control device 1 is a set of pulses in which L / H switches at high speed at a predetermined frequency (for example, 134 kHz), as schematically depicted in FIG. The Low part is Low so that a pulse that switches at a high speed is not output. Although the explanation is mixed, the bit structure data shown in FIG. 3 is obtained by performing envelope detection for a pulse that switches at high speed, and generating a pulse waveform that maintains High in the section where the pulse that switches at high speed exists. It is. Therefore, in the above-described embodiment and modification, the envelope signal of the LF data is not transmitted as it is, but the vehicle repeater 2 converts and generates a signal for transmission based on the envelope signal, and transmits it. I have to. Then, the portable relay device 3 reproduces the envelope signal of the LF data based on the received transmission signal, and performs a relay process or the like toward the portable device 4.

  In this embodiment, data close to LF data is transmitted as wireless LF data, not an envelope signal. Specifically, a signal divided by 1/2 (LF frequency-divided signal) is generated and transmitted. For example, the LF data is “101...” As shown in FIG. As shown in the figure, 134 kHz pulses are continuously output in the High portion of each bit. When the vehicle repeater 2 receives the LH data, the vehicle repeater 2 generates an LF frequency-divided signal (wireless LF data) having a frequency of 67 kHz as shown in FIG. Send.

  In this embodiment, for example, a 2.4 kHz low-pass filter is mounted on the RFIC that constitutes the second mobile-side transceiver unit 3 c of the mobile relay device 3. Thereby, when the portable repeater 3 receives the LF frequency division signal (wireless LF data) shown in FIG. 15B, the LF data shown in FIG. 15C is reproduced. The LF data shown in FIG. 15C is the same as the LF data reproduced based on the wireless LF data received by the mobile relay device 3 in each of the above-described embodiments. In the present embodiment, when wireless LF data is received by the second mobile-side transmitting / receiving unit 3c, it is output without analyzing the L / H state of the signal and the like, which is preferable because it can be processed easily and at high speed.

  FIG. 16 shows the main parts of the vehicle repeater 2 and the portable repeater 3 for executing such processing. As shown in the figure, the vehicle repeater 2 gives the LF data (A) received by the first vehicle side transmission / reception unit 2b (not shown) to the second vehicle side transmission / reception unit 2c via the frequency dividing circuit 2e. Configure as follows. The frequency dividing circuit 2e is a circuit that divides the frequency of the input signal by half. Thereby, the frequency dividing circuit 2e outputs LF frequency-divided data (B) frequency-divided to 67 kHz. This LF frequency division data (B) is given to the second vehicle side transmission / reception unit 2c. And the 2nd vehicle side transmission / reception part 2c carries out the radio transmission of the said LF frequency division data (B).

  Further, in the present embodiment, an envelope detection unit 2f is provided, and the received LF data (A) shown in FIG. 15A is supplied to the envelope detection unit 2f together with the frequency dividing circuit 2e. Then, the envelope detection unit 2f generates an envelope signal that maintains High in a section in which a pulse that switches to a high speed (for example, 134 kHz) exists. The output of the envelope detector 2f is given to the controller 2a. In this embodiment, the envelope signal is not transmitted, but is used for controlling transmission of LF frequency-divided data. Specifically, for example, the end of LF data is detected, and transmission end control is performed.

  On the other hand, as described above, the portable repeater 3 mounts a 2.4 kHz low-pass filter on the RFIC that constitutes the second portable-side transmitting / receiving unit 3c. As a result, the LF data (C) is output from the second portable-side transmitting / receiving unit 3c that has received the LF frequency-divided data (B). Since other configurations and operational effects are the same as those of the above-described embodiments and modifications, detailed description thereof is omitted.

  FIG. 17 shows another circuit configuration for generating and transmitting the frequency-divided LF data (B) obtained by dividing the frequency of the 134 kHz LF data (A) received by the vehicle repeater 2 by 1/2. Show. In this example, the 134 kHz LF data (A) received by the first vehicle side transmitting / receiving unit 2b (not shown) is given to the envelope detection unit 2f, and the output of the envelope detection unit 2f is sent to the control unit 2a and the LF frequency division data generation unit 2g. To give. The LF divided data generation unit 2g includes a 67 kHz oscillation circuit and an AND circuit. Then, the output of the envelope detector 2f and the output of the oscillation circuit are given to the AND circuit. As a result, the LF frequency division data shown in FIG. 15B is output from the AND circuit. Other configurations and the like are the same as those of the circuit shown in FIG. 16, and thus detailed description thereof is omitted.

  FIG. 18 shows a tenth embodiment. In the present embodiment, 134 kHz LF data (see FIG. 18B) output from the vehicle control device 1 is transmitted as it is. That is, in the vehicle relay device 2, the second vehicle-side transmitting / receiving unit 2c transmits the 134 kHz LF data output from the vehicle control device 1 received by the first vehicle-side transmitting / receiving unit 2b (not shown).

  On the other hand, the RFIC that constitutes the first portable side transceiver 3b of the portable repeater 3 uses a bit rate filter set at a low frequency. The low frequency should just be what cannot receive 134 kHz. As a result, the first mobile-side transmitting / receiving unit 3b of the mobile repeater 3 cannot receive the 134 kHz LF data transferred from the vehicle repeater 2 as it is, and as shown in FIG. A waveform like a waveform is output. In this way, by setting the bit rate filter to a low frequency so as not to receive 134 kHz by the RFIC on the receiving side, it is possible to ensure a communication distance equivalent to that when transmitting the envelope without converting to the envelope.

  Furthermore, in the present embodiment, the 134 kHz LF data output from the vehicle control device 1 is transmitted to the portable relay device 3 as it is without being converted into an envelope, and thus occurs when an LF signal is converted into an envelope. Since there is no delay or misalignment, it can be effectively applied to systems with severe time constraints. Further, since the LF signal is transmitted as it is, the relayed signal may be faithfully reproduced.

  Further, in the present embodiment, RF data is transmitted and received in a bit asynchronous manner. As a result, the bit rate filter (demodulation circuit) on the receiving side can be lowered, which is effective against noise.

[Other variations]
As described in the ninth embodiment, the LF data output from the vehicle control device 1 is a 134 kHz signal, and the LF data illustrated in FIGS. 3A and 3B is the received 134 kHz LF. It is the envelope waveform which produced | generated the data with the envelope detection part. Thus, instead of generating an envelope by the envelope detection unit, for example, a detection circuit or the like may be provided, and a function of detecting a reception signal received by the first vehicle-side transmission / reception unit 2b may be provided. By detection, the 134 kHz LF data has the same waveform as the LF data shown in FIGS. 3A and 3B, for example.

  In the description of the basic configuration described above, when the control unit 2a of the vehicle repeater 2 receives the start signal transmitted from the portable repeater 3, it transmits a foot brake signal to the vehicle control device 1 using the wired communication function. The vehicle control device 1 that has received the foot brake signal outputs a response request signal (LF data), but the present invention is not limited to this. For example, instead of the foot brake signal, a push start signal Alternatively, it may be a door open signal. However, an embodiment that outputs a foot brake signal close to the output timing of a signal generated in association with an operation when the driver gets on and actually starts the engine is the best. For example, when a door open signal is output, there is a vehicle that sounds an auto alarm, and when it is a push start signal, there is a possibility of starting erroneously, but in the case of a foot brake signal, the signal is transmitted to various control devices. However, there is no safety problem.

  Furthermore, in the description of the basic configuration described above, the foot brake signal is continuously output and the ON state is output. However, the present invention is not limited to this, and may be turned OFF after the foot brake signal is output ON. . In that case, the vehicle relay device 2 that has received the wireless RF data that is a response from the mobile relay device 3 turns on the engine start request signal and the foot brake signal. However, it is better to continue the foot brake signal ON state as described in the basic configuration. When the driver gets on and actually starts the engine, press the push start button with the foot brake pedal depressed, and keep the foot brake pedal depressed until the engine starts. I can do it. Furthermore, since the sequence for starting the engine differs depending on the vehicle type or the like, it is preferable to output ON / OFF in accordance with the sequence.

  Further, as described above, in order to make signal transmission / reception the same as when the driver gets on and actually starts the engine, the vehicle relay that has received the start signal transmitted from the portable repeater 3 The function of outputting the foot brake signal from the machine 2 and the function of continuing to turn on the output foot brake signal are not limited to those applied to the above-described embodiments and modifications. You may apply to the vehicle remote control system which uses this relay system.

  The above-described embodiments and modifications may be combined as appropriate. Moreover, when combining, it is good to take a part of structure and combine with another form. Furthermore, you may comprise another invention which made the one part structure shown to each embodiment and a modification essential. For example, a plurality of communication-related parameters, which is one of the configurations of the first embodiment, are stored and switched by the setting switch 3g. However, a configuration without such a function may be employed.

  As described above, various aspects of the present invention have been described using the embodiments and the modifications. However, these embodiments and descriptions are not intended to limit the scope of the present invention, and are for understanding the present invention. It is added that it was provided to contribute. The scope of the present invention is not limited to the configurations and manufacturing methods explicitly described in the specification, and includes combinations of various aspects of the present invention disclosed in the present specification. Among the present inventions, the configuration for which a patent is sought is specified in the appended claims, but the present invention is disclosed in this specification even if the configuration is not specified in the claims. I would like to remind you that there is a possibility of claiming this configuration in the future.

DESCRIPTION OF SYMBOLS 1 Vehicle control apparatus 1a Control part 1b Transmission / reception part 1c Authentication information storage part 2 Vehicle relay machine 2a Control part 2b 1st vehicle side transmission / reception part 2c 2nd vehicle side transmission / reception part 2d Parameter storage part 2e Notification part 3 Portable relay machine 3a Control part 3b 1st portable side transmission / reception part 3c 2nd portable side transmission / reception part 3d Operation part 3e Notification part 3f Parameter storage part 3g Setting switch 3h Normal LF data information storage part 4 Portable machine 4a Control part 4b Transmission / reception part 4c Authentication information storage part

Claims (5)

The vehicle control device in a system for controlling a vehicle, wherein the vehicle control device outputs a response request signal and receives a response signal including legitimate authentication information transmitted from the portable device in response to the response signal. A relay system for relaying wireless communication between the portable devices,
A vehicle repeater capable of communicating with the vehicle control device;
A portable repeater capable of communicating with the portable device;
Before Symbol vehicle repeater, transceiver for relaying in said mobile repeater does not perform an appropriate switching and relaying transmission and reception state constitutes a single transceiver for RFIC, a receive-only RFIC transmission dedicated RFIC A relay system comprising a configuration that does not require transmission / reception switching during relay. 2. The relay system according to claim 1, wherein the ACK signal of the vehicle relay device with respect to the WAKE signal transmitted by the vehicle control device has a function of transmitting the vehicle relay device by itself instead of relaying. 3. . The relay between the vehicle repeater and the portable repeater is configured between the vehicle repeater and the portable repeater in a configuration in which the relay is configured by switching the transmission / reception state appropriately with the one transmission / reception RFIC. The relay system according to claim 1, wherein the relay system is performed at a frequency lower than a frequency necessary for relay. 4. The portable repeater is provided with a space in which the portable device can be stored, and the portable repeater and the portable device are integrated to be portable. Relay system. The relay system according to any one of claims 1 to 4, wherein the portable relay device is configured as a mobile battery provided with a connection portion with a mobile device .