Systems and programs, etc.

Abstract

We provide systems and other features that are superior to those of previous models. [Solution] The present invention provides a remote vehicle control system comprising a portable device 8 equipped with a function to transmit wireless signals for remotely operating a vehicle, and an on-board unit 9 retrofitted to the vehicle that receives wireless signals from the portable device 8 and controls the vehicle to start the engine. When the on-board unit 9 receives a wireless signal indicating an engine start command, it performs a first-stage control which includes a first control that causes the vehicle's original keyless entry control unit 300 to recognize that a person has touched the door handle of the driver's side door of the vehicle, and then performs a second-stage control which causes the vehicle to start the vehicle's engine.

Description

Technical Field

[0001] The present invention relates to, for example, systems and programs.

Background Art

[0002] For example, Patent Document 1 discloses an engine starting device that starts an engine by remote control, in which an in-vehicle device that receives a signal from a slave unit starts the engine by mimicking the movement of a key cylinder by an engine key.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the conventional systems had various problems. Therefore, an object of the present invention is to provide a system, a program, etc. having characteristics superior to those of the prior art.

[0005] The object of the present invention is not limited thereto, and the applicant intends to obtain rights through divisional applications, amendments, etc., for configurations that aim to obtain the effects derived from the components of the configuration disclosed in this specification and the drawings, etc. For example, problems that can be described in this specification as "~is possible" or "~is feasible" are disclosed in this specification. Each problem is described independently, and the applicant intends to obtain rights to each configuration for solving each problem independently through divisional applications, amendments, etc. Even if a problem is implicitly understood from the description in the specification, the applicant intends to include a part of the configuration described in this specification in the claims through amendment or divisional application. Furthermore, configurations that solve problems by combining these independent problems are also disclosed, and the applicant intends to obtain rights to them. [Means for solving the problem]

[0006] (1) A remote control system for a vehicle comprising a portable device equipped with a function for transmitting wireless signals for remotely operating a vehicle, and an aftermarket on-board device that is retrofitted to the vehicle and receives wireless signals from the portable device and controls the vehicle to perform predetermined controls, wherein the aftermarket on-board device, upon receiving the predetermined wireless signal, performs a first-stage control which is at least one of the following controls: a first control which is a control that causes the vehicle's control unit to recognize that a person has touched the door handle of a predetermined door of the vehicle; a second control which is a control that causes the vehicle's control unit to recognize that a predetermined door lock of the vehicle has been released; and a third control which is a control that causes the vehicle's control unit to recognize that a predetermined door of the vehicle has been opened, and then performs a second-stage control which is the predetermined control of the vehicle.

[0007] In a configuration that includes the part "control to cause the vehicle's control unit to recognize that a person has touched the door handle of a predetermined door of the vehicle," the vehicle's control unit has a function to not execute the predetermined control if it does not recognize that a person has touched the door handle of a predetermined door of the vehicle prior to the predetermined control, and the predetermined control can be made to the vehicle by wirelessly operating a user's portable device from a remote location away from the vehicle.

[0008] In a configuration that includes the part "control to cause the vehicle's control unit to recognize that a predetermined door lock of the vehicle has been released," a vehicle has a function that prevents the vehicle's control unit from executing the predetermined control if it does not recognize that a predetermined door lock of the vehicle has been released prior to the predetermined control. In such a vehicle, the predetermined control can be made to the vehicle by wirelessly operating a user's portable device from a remote location away from the vehicle.

[0009] According to the configuration that includes the part "control to cause the vehicle's control unit to recognize that a predetermined door of the vehicle has been opened," in a vehicle that has a function to not execute the predetermined control if the vehicle's control unit does not recognize that a predetermined door of the vehicle has been opened prior to the predetermined control, the predetermined control can be made to the vehicle by wirelessly operating a user's portable device from a remote location away from the vehicle.

[0010] The vehicle should ideally be equipped with an immobilizer function, such as a vehicle that uses wireless information to authenticate between the original key and the vehicle, performing predetermined controls if authentication is successful, and refraining from performing predetermined controls if authentication is unsuccessful. In such a vehicle, wireless information is transmitted and received between the original key and the vehicle, but the vehicle has predetermined controls (such as engine starting, as described later) that it wants to perform only after detecting that the driver with the original key is inside the vehicle. However, since wireless communication is used for communication between the original key and the vehicle's control unit, there is a problem in that it is difficult to determine by wireless communication whether the original key is outside or inside the vehicle. For example, if the output of the radio waves transmitted inside the vehicle is weakened, communication inside the vehicle may not be possible, and if it is strengthened, communication will occur even if the original key is outside the vehicle. Therefore, some vehicle control units are designed to detect more strictly than before whether the driver is inside the vehicle. In such a vehicle, it is desirable to detect the operations necessary when the driver gets into the vehicle from the time they are outside. Therefore, for example, "a remote control system for a vehicle comprising a portable device equipped with a function for transmitting wireless signals for remotely operating a vehicle, and an in-vehicle device retrofitted to the vehicle that receives wireless signals from the portable device and controls the vehicle to perform predetermined controls, wherein the retrofitted in-vehicle device, upon receiving the predetermined wireless signal, performs control to cause the vehicle to recognize that an operation necessary has been performed while the driver was outside the vehicle and getting in, and then performs the predetermined controls on the vehicle." In particular, in such a vehicle, "the in-vehicle device, upon receiving the predetermined wireless signal, performs control to cause the vehicle's control unit to recognize that a person has touched the door handle of a predetermined door of the vehicle, control to cause the vehicle's control unit to recognize that a predetermined door lock of the vehicle has been released, and then performs the predetermined controls on the vehicle."

[0011] "Remote" refers to a location outside the vehicle, beyond the communication range of the vehicle's original key, preferably several tens of meters to several kilometers. The portable device can be a mobile phone or smartphone, controlled via a 5G or LTE network. However, it is particularly desirable to be able to control a vehicle parked in your home's driveway from inside your home.

[0012] "Operation" may be detected by a predetermined change in sensors or other devices equipped with the portable device. In particular, it is preferable to have an input means for receiving user operations and to output a wireless signal when a predetermined operation is detected on the input means.

[0013] The "wireless signal" should be configured to transmit radio waves with characteristics such as frequency and power output that can reach particularly "remote" ranges. In particular, it is good to use a frequency band different from the frequency band used by vehicles. For example, it is good to use a radio equipment for telecontrol that is a specified low-power radio station conforming to the technical standards. In particular, the frequency band of 420MHz and the transmission output of 1mW or less is good. Also, the 920MHz band and the transmission output of 20mW or less is good, and in particular, the transmission output of 10mW or less is good.

[0014] The "portable device" should be different from the vehicle's original key. The "portable device" should be equipped with an input means for inputting the aforementioned operations. The input means may be a touch panel or the like, but a switch is preferable. Various types of switches can be used as the switch; for example, a capacitive switch may be used, but a tactile switch is particularly preferable. As a "portable device," it is desirable to have a means of transmitting on the portable device side that is capable of transmitting "wireless signals."

[0015] The "predetermined control" in "control to cause the vehicle to perform predetermined control" should, in particular, be the control required to create a state in which the driver can comfortably depart when they get into the vehicle, and in particular, the state in which the air conditioner can be turned on. In particular, in vehicles with an engine that is not driven by a motor, it should be the control to start the engine. In particular, in vehicles that are driven by a motor, it should be the state in which the so-called main power is turned on. For example, it should be the control to change the state in which the vehicle's tires are driven from a non-driveable state to a driveable state.

[0016] "Control to cause the vehicle to perform predetermined actions" could be, for example, a control that sends a signal to the vehicle's control unit that simulates the operation of pressing the push-start button while the vehicle's brake is pressed. For example, the control unit could be connected to the brake line and the signal line of the push-start switch, and the system could be configured to send signals to these signal lines indicating that the brake has been pressed and the push-start switch has been pressed.

[0017] For "added later," it would be best to define it as something that cannot be installed at the vehicle manufacturer's factory. For "added later," it would be best to define it as something that is added later as a dealer option at a vehicle dealership, or something that is added later at a car accessories store, etc. As an "aftermarket in-vehicle device," it is preferable to have a receiving means on the aftermarket in-vehicle device side that can receive wireless signals transmitted by a portable device. As an "aftermarket in-vehicle device," it may be implemented using a single housing, or it may be implemented using multiple housings or other components.

[0018] The "predetermined radio signal" may be a radio signal that causes the vehicle to perform a predetermined control, for example, a radio signal having a specific pattern for instructing the vehicle to perform a predetermined control. For example, a radio signal containing specific data for instructing the vehicle to perform a predetermined control. "When a predetermined radio signal is received" should ideally be defined as within a predetermined time after the predetermined radio signal is received. In particular, it is ideal to define it as immediately after the predetermined radio signal is received.

[0019] "Control to cause the vehicle's control unit to recognize that a person has touched the door handle of a designated door of the vehicle" may include, for example, a control that outputs a signal equivalent to that when a person touches the door handle to a connection line connected to a sensor unit or switch unit that detects when a person has touched the designated door handle of the vehicle's control unit, or a control means of an aftermarket in-vehicle device connected to the in-vehicle network that transmits information indicating that a person has touched the door handle of a designated door to the in-vehicle network, so that the vehicle's control unit receives information indicating that a person has touched the door handle of a designated door via the in-vehicle network. The designated door handle may be any door handle on the vehicle, but it is especially recommended to use the driver's side door handle.

[0020] "Control to cause the vehicle's control unit to recognize that a predetermined door lock of the vehicle has been released" may include, for example, a control that causes the vehicle's control unit to output a signal equivalent to that when a predetermined door lock is released to a connection line connected to a sensor unit or switch unit that detects when a predetermined door lock is released, or a control means of an aftermarket in-vehicle device connected to the in-vehicle network to transmit information indicating that a predetermined door lock has been released to the in-vehicle network so that the vehicle's control unit receives information indicating that a predetermined door lock has been released via the in-vehicle network. The designated door lock could be any door lock on the vehicle, but it is particularly preferable to use the driver's side door lock.

[0021] "Control for causing the control unit of the vehicle to recognize that a predetermined door of the vehicle has been opened" may include control for outputting a signal equivalent to when a predetermined door is opened to a connection line connected to a sensor unit or switch unit that detects that the control unit of the vehicle has opened a predetermined door, or control for causing a control means of a retrofitted in-vehicle device connected to an in-vehicle network to transmit information indicating that a predetermined door has been opened to the in-vehicle network so that the control unit of the vehicle can receive the information via the in-vehicle network. The predetermined door may be any door of the vehicle, but particularly preferably the driver's seat door.

[0022] The signal line connected to the control unit of the vehicle may be a signal line indirectly connected to the control unit of the vehicle, but is preferably a signal line directly connected to the control unit of the vehicle. Also, for example, the signal line connected to the control unit of the vehicle may simply be connected to the signal line between the control unit and the control target, but is connected to the signal line on the control unit side where the signal line between the control unit and the control target (such as a door knob, door lock, switch or sensor for detecting the state of the door, etc.) is cut. While the control unit of the vehicle is performing the control for causing the recognition, a signal to be recognized is output to the signal line on the control unit side (regardless of the state of the signal line on the control target side where the signal line between the control unit and the control target is cut), and while the control unit of the vehicle is not performing the control for causing the recognition, the state of the signal line on the control target side where the signal line between the control unit and the control target is cut may be output.

[0023] The in-vehicle network may be a signal line of an in-vehicle network indirectly connected via a predetermined circuit, such as a predetermined gateway ECU, etc., but it may be a signal line of an in-vehicle network connected without going through a predetermined gateway ECU, etc. The transmission of a signal recognized by the control unit that the control target is in a predetermined state may be executed repeatedly. When a status inquiry signal for a control target such as the control unit (e.g., engine ECU) is detected, the control unit (e.g., engine ECU) may transmit a signal recognizing that it is in a predetermined state before the control unit of the control target (e.g., body ECU) returns a response signal to the inquiry signal. (2) After the first-stage control, the aftermarket in-vehicle device may perform control to lock the door.

[0024] In this way, even in a vehicle where the door lock of the vehicle is released by the first-stage control from the aftermarket in-vehicle device, when there is an instruction for remote control of the vehicle from the mobile device, the door lock can be locked. Therefore, it is possible to prevent the vehicle from being entered and vandalized with the door lock released or stolen, and to perform predetermined control on the vehicle according to an instruction from the mobile device.

[0025] Note that after the first-stage control, the aftermarket in-vehicle device may check whether the door is unlocked, and if the door is locked, it may not perform control to lock the door, and if the door is unlocked, it may perform control to lock the door and then perform predetermined control on the vehicle. The control to lock the door may be to output a signal to drive the actuator (e.g., motor or solenoid) to lock the door to the signal line connected to the signal line for driving the actuator for locking the door, or to output a signal for locking the door to the in-vehicle network.

[0026] The first stage control may be followed by a second stage control, which is a predetermined control applied to the vehicle, but it is preferable to perform the first stage control before performing the second stage control, which is a predetermined control applied to the vehicle. Doing so can further reduce the possibility of theft or vandalism inside the vehicle. (3) The first stage control may be omitted when the vehicle doors are not locked.

[0027] The condition that the door lock is not locked may be defined as when the door lock is not detected or when the door is detected unlocked. The door lock status may be obtained by connecting to a signal line for the vehicle's control unit to detect the door lock, obtaining a signal regarding the vehicle's door lock status transmitted via the in-vehicle network, or installing a new sensor near the door lock to obtain the door lock status, at least one of these methods. (4) The program should be one that enables a computer to implement the functions of any of the systems described in (1) to (3).

[0028] The inventions described in (1) to (3) above can be combined in any way. For example, one may combine all or part of the configuration of the invention described in (1) with at least part of the configuration of at least one of the inventions described in (2) and onward. In particular, it is preferable to combine the invention described in (1) with at least part of the configuration of at least one of the inventions described in (2) and onward. Alternatively, one may extract any configuration from the inventions described in (1) to (3) and combine the extracted configurations. The applicant of this application intends to obtain rights to inventions that include these configurations. Furthermore, even if there are descriptions such as "in the case of..." or "when...", these are not meant to be descriptions that limit the configuration to that case or time. These are merely examples of better configurations, and the applicant intends to obtain rights to configurations that do not fall under these cases or times. Also, even if there is a sequence of descriptions, it is not limited to that order. Configurations with some parts deleted or the order rearranged are also disclosed, and the applicant intends to obtain rights to them as well. [Effects of the Invention]

[0029] According to the present invention, it is possible to provide a system that is superior to conventional systems.

[0030] Furthermore, the effects of the present invention are not limited to those described herein. Effects derived from the components disclosed in this specification and the drawings are also disclosed, and the applicant intends to obtain rights to such components through divisional applications, amendments, etc. For example, phrases such as "can do" or "is possible" in this specification are descriptions that clearly indicate the effects to be achieved, and there are components that demonstrate effects even without such descriptions. Moreover, there are effects that can be grasped by the component even without such descriptions. [Brief explanation of the drawing]

[0031] [Figure 1] This figure shows an example of a vehicle remote control system including a relay system according to the present invention (first embodiment, etc.). [Figure 2] This diagram shows the communication timing of each data signal in the first embodiment, etc. [Figure 3] This diagram shows the power supply means (dummy battery). [Figure 4] This figure shows an example of a vehicle remote control system including a relay system according to the present invention (second embodiment, etc.). [Figure 5] This diagram shows the communication timing of each data signal in the second embodiment, etc. [Modes for carrying out the invention]

[0032] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. Note that the embodiments described below are just one example of the present invention, and the content of the present invention should not be interpreted as being limited based on the following description.

[0033] Embodiments of the present invention will be described below with reference to the drawings. These drawings are used to illustrate the technical features that the present invention may adopt. The configuration and shape of the described apparatus are merely illustrative examples, and the present invention is not to be construed as being limited thereto. Various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art, without departing from the scope of the present invention. [First Embodiment]

[0034] A preferred first embodiment of the present invention will be described below with reference to the drawings. The remote engine starting system (engine starter system) of this embodiment is installed in a vehicle that employs a keyless system. The keyless system allows the engine to be started and stopped by operating the engine start switch 200 while carrying a genuine portable device 100 for the keyless key, without inserting the engine key (mechanical key) into the key cylinder. Products such as Intelligent Key (registered trademark: Nissan Motor Co., Ltd.) and Smart Key (registered trademark: Toyota Motor Corporation) have been commercialized. Specifically, the genuine portable device 100 stores identification information such as a predetermined code, and the genuine portable device 100 is equipped with a transceiver and wirelessly transmits the identification information when it receives an inquiry wireless signal from the vehicle side. The vehicle's original keyless entry control unit 300 (ECU) is equipped with a transceiver and wirelessly transmits an inquiry signal to the original portable device periodically, when a person is detected by a human sensor, or when a trigger (push switch, door handle switch, etc.) is turned ON. Upon receiving identification information sent from the original portable device 100 in response to this, the ECU determines whether or not it is from the genuine original portable device 100 corresponding to itself. Then, if the engine start switch 1 is turned ON while the ECU has received identification information from the original portable device 100, the original keyless entry control unit 300 rotates the starter motor 4 and performs the engine start process.

[0035] Furthermore, the genuine keyless entry control unit 300 of this embodiment also controls the locking and unlocking of the door locks. That is, when it receives a command signal to lock or unlock the door locks from the genuine portable device 100, it sends a control signal to the door lock unit 500 corresponding to the received command signal, and controls the locking and unlocking of the door locks. Here, the door lock unit 500 is, for example, a drive motor for the door lock, and locking and unlocking is performed by rotating the drive motor in forward and reverse directions. In addition, the genuine keyless entry control unit 300 also has a function to send a control signal to the door lock unit 500 to control locking / unlocking not only when it receives a command signal from the genuine portable device 100 as described above, but also based on the fact that a user carrying the genuine portable device 100 presses a switch provided on the vehicle door. Note that the genuine portable device 100 does not necessarily have this door locking / unlocking control function.

[0036] In this embodiment, a door handle sensor 600 is connected to the genuine keyless entry control unit 300. The door handle sensor 600 is a capacitive touch sensor installed inside the driver's side door handle on the outside of the vehicle. It detects from a change in capacitance when the driver places their hand on the outside door handle of the driver's side door to open the door from the outside of the vehicle, and is used in various vehicles. When the genuine keyless entry control unit 300 determines from the change in capacitance of the door handle sensor 600 that a hand has been placed on the driver's side door handle, it determines whether the authentication information received from the genuine portable device 100 is legitimate. If it is legitimate, it controls the door lock unit 500 to unlock the door lock. As a result, the driver's side door lock is released and the driver gets into the driver's seat. After the genuine keyless entry control unit 300 detects the change in capacitance of the door handle sensor 600 and determines that a hand has been placed on the driver's side door handle, it starts the engine if it detects that the engine start switch 200 has been pressed. The genuine keyless entry control unit 300, when it detects that the engine start switch 200 has been pressed but has not determined that a hand has been placed on the driver's side door handle because there is no change in the capacitance of the door handle sensor 600, will perform control to prevent the engine from starting.

[0037] The vehicle's engine start switch 200 can be an ignition knob operated by rotation or a button operated by pressing. Since the original functions are those of conventionally known features installed in the vehicle, detailed explanations of these known aspects will be omitted.

[0038] Next, I will explain the remote engine starting system. This remote engine starting system is not installed at the vehicle manufacturer's factory, but is added after the vehicle leaves the manufacturer's factory. For example, it could be added as a dealer option at a vehicle dealership, or added at an aftermarket auto parts store.

[0039] This remote engine starting system comprises a portable unit (slave unit) 8 kept by the user and an in-vehicle unit (main unit) 9 installed in the vehicle. The portable unit 8 has an engine start button 8a and an engine stop button 8b on its case surface. The portable unit 8 has a transceiver function that enables two-way communication with the in-vehicle unit 9, and therefore contains a transmitting / receiving circuit and a control unit, etc. Although not shown in the figures, output means such as an LED, LCD panel, speaker, etc. When the control unit in the portable unit 8 recognizes that the engine start button 8a or the engine stop button 8b has been pressed, it transmits a command signal indicating the content of the pressed button (engine start / stop) along with a predetermined code (authentication information) for self-identification, via the transmitting circuit.

[0040] Furthermore, when the receiving circuit of the portable device 8 receives a signal from the corresponding in-vehicle unit 9, the control unit within the portable device 8 processes the received signal accordingly. That is, as will be described later, when the in-vehicle unit 9 receives a command signal sent from the portable device 8, it executes the processing corresponding to that command signal and returns the result as an answer back, so the portable device 8 executes processing according to the content of the answer back. For example, if it has an output means, it will notify the content of the answer back (success / failure). Also, if an answer back is not received within a certain period of time, the control unit will send the command signal again along with authentication information.

[0041] The in-vehicle unit 9 comprises a remote control transceiver 10 and an MPU 15 as a control unit. The MPU 15 is a microcontroller equipped with a CPU, ROM, RAM, peripheral circuits, etc., and performs processing and realizes functions by executing a program stored in ROM with the CPU. The remote control transceiver 10 comprises an antenna 11, a receiving circuit 12, and a transmitting circuit 13. Signals received by the receiving circuit 12 via the antenna 11 are sent to the MPU 15. The MPU 15 determines from the authentication information contained in the received signal whether the received signal is from the corresponding portable device 8, and if it is a signal from the corresponding portable device 8, it executes processing based on the command signal contained in the received signal. After executing processing based on the command signal, the control unit 15 generates an answer-back signal and sends it back to the portable device 8 via the transmitting circuit 13. The specific processing performed by the control unit 15 will be described later.

[0042] The MPU15 is connected to the genuine keyless entry control unit 300. Specifically, the connection point is the same as the connection point from the genuine engine start switch 200 to the genuine keyless entry control unit 300. The MPU15 then provides a signal similar to the signal given from the engine start switch 200 to the genuine keyless entry control unit 300 when starting and stopping the engine. As a result, when the MPU15 receives an engine start command, it sends a signal to the genuine keyless entry control unit 300 that is the same as when the engine start switch is ON (engine started), causing the genuine keyless entry control unit 300 to execute the engine start process and rotate the starter motor 400 to start the engine. Similarly, when the MPU15 receives an engine stop command, it sends a signal to the genuine keyless entry control unit 300 that is the same as when the engine start switch 200 is OFF (engine stopped), causing the genuine keyless entry control unit 300 to execute the engine stop process and stop the running engine.

[0043] However, in this embodiment, the genuine keyless entry control unit 300 of the vehicle does not start the engine if it detects that the engine start switch 200 has been pressed when there is no change in the capacitance of the door handle sensor 600 and it has not determined that a hand has been placed on the driver's side door handle. Therefore, the MPU 15 is also connected to the door handle sensor 600. The specific connection point is the same as the genuine connection point from the door handle sensor 600 to the genuine keyless entry control unit 300. For example, the signal line connecting the door handle sensor 600 to the genuine keyless entry control unit 300 is branched and connected using an electrical tap or the like. Then, when starting the engine, the MPU 15 outputs a signal similar to the signal given from the door handle sensor 600 to the genuine keyless entry control unit 300, which corresponds to the change in capacitance due to a hand touching the door handle, before providing a signal similar to the signal given from the engine start switch 200 to the genuine keyless entry control unit 300. In this way, the engine can be started even when the driver is actually outside the vehicle and in a remote location beyond the communication range between the genuine portable device 100 and the vehicle.

[0044] Furthermore, the system includes safety sensors 16 that check whether it is safe to start the engine, such as whether the vehicle's shift position is in the parking position or whether the ignition key switch is in the OFF position. The MPU 15 executes the engine start process only if safety is confirmed by these safety sensors 16.

[0045] The system also includes a start-up confirmation sensor 19 that detects whether the engine is running. For example, after the MPU 15 issues an engine start command to the genuine keyless control unit 300, it determines whether the engine start process based on the start command was successful or unsuccessful based on whether the start-up confirmation sensor 19 turns ON within a certain period of time, and sends the result back via the transmission circuit 13. If the command fails, the MPU 15 may also issue another engine start command to the genuine keyless control unit 300.

[0046] Furthermore, the main unit is equipped with a keyboard-like operation unit 17 for providing various operation inputs. In addition, it is equipped with a temperature sensor 18 for detecting the temperature inside the vehicle. For example, if the room air conditioner is switched ON in advance, and the room air conditioner operates when the engine starts, and the temperature inside the vehicle detected by the temperature sensor 18 reaches a set value, the MPU 15 controls the engine to stop. Note that the sensors 16, 18, 19 and the operation unit 17 can be conventionally known, and are not necessarily required in this invention.

[0047] By the way, in order to start the engine (start the rotation of the starter motor 400) using the genuine keyless entry control unit 300, it is necessary to receive legitimate authentication information from the corresponding genuine portable device 100. Therefore, in this embodiment, the genuine portable device 100 is placed in a predetermined location inside the vehicle (a place where communication with the genuine keyless entry control unit 300 is possible), and when the MPU 15 outputs an engine start command to the genuine keyless entry control unit 300 (to the same state as turning on the engine start switch 200), it is made to output legitimate authentication information from the genuine portable device 100. As a result, the genuine keyless entry control unit 300 receives the legitimate authentication information output from the genuine portable device 100 and starts the starter motor 400 according to the engine start command given by the MPU 15.

[0048] Here, the control by which the MPU 15 outputs legitimate authentication information from the genuine portable device 100 at a desired timing involves stopping the operation of the genuine portable device 100 (at least the operation / function of outputting legitimate authentication information) in a steady state, and activating the operation / function of the genuine portable device 100 to output legitimate authentication information when necessary. Specifically, this involves controlling the power supply to the genuine portable device 100. That is, normally, since the genuine portable device 100 is battery-powered, the battery is removed from the battery holder (storage compartment) of the genuine portable device 100, and the power supply means 20 connected to the in-vehicle unit 9 (MPU 15) is attached to the battery holder. When the power is ON, the genuine portable device 100 outputs legitimate authentication information at a predetermined timing (for example, at regular intervals), so when outputting an engine start command, the MPU 15 starts supplying power to the genuine portable device 100 from the power supply means 20. Then, under normal circumstances, the power supply is stopped. As a result, when the MPU 15 of the in-vehicle unit 9 receives an engine start command from the portable device 8, it outputs a signal similar to the signal corresponding to the change in capacitance caused by a hand touching the door handle, which is sent from the door handle sensor 600 to the genuine keyless entry control unit 300. Then, the power supply means 20 supplies power to the genuine portable device 100, activating the genuine portable device 100 to authenticate the immobilizer to the genuine keyless entry control unit 300. At the same time, it generates a signal similar to the engine start signal output to the genuine keyless entry control unit 300 during the genuine engine start, causing the genuine keyless entry control unit 300 to start the engine. In this way, the engine can be started even when the driver is actually outside the vehicle and at a remote location beyond the communication range between the genuine portable device 100 and the vehicle.

[0049] The same procedure can be used to output an engine stop command. However, when the engine is stopped, the same signal output process as the one performed when the engine was started, which corresponds to the change in capacitance caused by a hand touching the door handle, is not performed.

[0050] When the engine is not being started or stopped (when authentication of the genuine portable device 100 by the genuine keyless entry control unit 300 is not required), power to the genuine portable device 100 is stopped to prevent the genuine portable device 100 from outputting legitimate authentication information. At this time, the same signal output process as the one performed when the engine is started, which corresponds to the change in capacitance caused by a hand touching the door handle, is not performed.

[0051] In this way, even if the genuine portable device 100 is left inside the vehicle, the genuine portable device 100 placed inside the vehicle does not output legitimate authentication information, so the genuine keyless control unit 300 cannot recognize the presence of the genuine portable device 100, and for example, the doors can be locked when the driver gets out of the vehicle. In other words, as described above, in vehicles employing a door lock system that controls the locking / unlocking of the door locks by command signals from the genuine portable device 100 or by pressing the door switch while the genuine portable device 100 is being carried, control is performed so that the door locks are not locked when the genuine portable device 100, which outputs legitimate authentication information, is placed inside the vehicle. However, as described above, in a normal state, the door locks can be locked / unlocked by stopping the power supply. Of course, normally multiple genuine portable devices are provided, so one of them can be placed in a designated location inside the vehicle as the genuine portable device 100 in this system, and another genuine portable device can be used to remotely control the locking / unlocking of the door locks using that genuine portable device, or to control the engine start / stop based on the operation of the engine start switch 200.

[0052] Figure 2 shows the engine start processing algorithm. First, the user presses the engine start button 8a on the portable device 8 with their finger. In response to this operation, the portable device 8 transmits a wireless signal indicating an engine start command. When the in-vehicle unit 9 (MPU 15) receives the engine start command from the corresponding portable device 8, it outputs a signal similar to the signal corresponding to the change in capacitance caused by a hand touching the door handle, which is sent from the door handle sensor 600 to the genuine keyless entry control unit 300, and waits for a predetermined time (10 seconds in this embodiment). This predetermined time should be longer than the time it takes for the driver to open the door from outside the vehicle and get into the driver's seat. Subsequently, power is supplied to the dummy battery, which is the power supply means 20 (S2). This power supply is sufficient if it enables the genuine portable device 100 to perform the operation of outputting legitimate authentication information.

[0053] The genuine portable device 100 begins outputting authentication information when power is supplied by the dummy battery (S3). Accordingly, the genuine keyless entry control unit 300 receives the legitimate authentication information from the genuine portable device 100 and recognizes that the genuine portable device 100 is present inside the vehicle.

[0054] Next, the MPU 15 outputs an engine start signal to the genuine keyless entry control unit 300 (S4). In response, the genuine keyless entry control unit 300 enters the same state as if the engine start switch 200 were turned ON, and having received the legitimate authentication information through the execution of processing step S3, it rotates the starter motor 400 and performs the normal engine start process. If the MPU 15 confirms that the engine has started based on the input from the start confirmation sensor 19 (S5), the MPU 15 stops supplying power to the power supply means (S6).

[0055] The MPU15 is also connected to the door lock unit 500. The specific connection point is the same as the original connection point from the door lock unit 500 to the original keyless entry control unit 300. For example, the signal wire connecting the door lock unit to the original keyless entry control unit 300 is branched and connected using an electrical tap or similar. The MPU15 then provides the same signal to the door lock unit as the signal given when the door is locked from the original keyless entry control unit 300. In this way, the doors of this vehicle can be locked (S7).

[0056] Furthermore, in this embodiment, the power supply means used is a power supply unit that fits into the battery holder of the original portable device and supplies power to a part corresponding to the power terminal inside the battery holder. For example, if the battery of the original portable device is a button battery, the power supply means will have the same shape as that button battery, as shown in Figure 3. That is, the power supply means 20 comprises a case body 21 having the same external shape as the button battery for the original portable device 100. The case body 21 is constructed by joining together an upper case 21a and a lower case 21b, which are divided into two parts vertically. A positive terminal plate 22 and a negative terminal plate 23 are arranged in the internal space of the case body 21, and a part of the positive terminal plate 22 and the negative terminal plate 23 is exposed to the outside of the case body 21. This exposed position is a position that contacts the power supply terminal inside the battery holder of the original portable device 100. The positive terminal plate 22 and the negative terminal plate 23 are each connected to lead wires 24, and the in-vehicle unit 9 is connected via these lead wires 24. Following instructions from the MPU15, the in-vehicle unit 9 applies a desired voltage between the terminals of the power supply means 20 (dummy battery) via the lead wire 24, enabling power supply to the genuine portable device 100.

[0057] In the embodiments described above, an example of application to an engine starting device that drives a starter motor to start the engine was shown. However, the present invention is not limited to this, and can be applied to starting devices for electric vehicles, air conditioning systems in electric vehicles, and other devices (on-board devices / vehicle devices) that are started by remote control operation.

[0058] In this embodiment, the vehicle remote control system comprises a portable device 8 equipped with a function to send wireless signals for remotely operating the vehicle, and an on-board unit 9 retrofitted to the vehicle that receives wireless signals from the portable device 8 and controls the vehicle to start the engine. When the on-board unit 9 receives a wireless signal indicating an engine start command, it performs a first-stage control (S1) which is a control to cause the vehicle's original keyless entry control unit 300 to recognize that a person has touched the door handle of the driver's side door of the vehicle, and then performs a second-stage control (S2 to S6) which is a control to cause the vehicle to start the vehicle's engine.

[0059] In this embodiment, the first stage of control involves a control that causes the vehicle's original keyless entry control unit 300 to recognize that a person has touched the door handle of the driver's side door. However, in vehicles where the vehicle's original keyless entry control unit 300 detects that a predetermined door lock has been released before the engine start operation, a second control may be similarly performed, either in place of or in conjunction with the first stage, to cause the vehicle's original keyless entry control unit 300 to recognize that a predetermined door lock has been released. Furthermore, in this embodiment, the first stage of control involves a control that causes the vehicle's original keyless entry control unit 300 to recognize that a person has touched the door handle of the driver's side door. However, in vehicles where the vehicle's original keyless entry control unit 300 detects that a predetermined door has been opened before the engine start operation, a third control may be similarly performed, either in place of or in conjunction with the first stage, to cause the vehicle's original keyless entry control unit 300 to recognize that a predetermined door has been opened. It is advisable to provide a switching function, such as a DIP switch, to set whether or not to execute control for each of the first, second, and third settings, and to configure the system to execute according to these settings.

[0060] In a configuration that includes a control section for causing the vehicle's original keyless entry control unit 300 to recognize that a person has touched the door handle of a designated door of the vehicle (in the above embodiment, the door handle on the outside of the driver's side), the vehicle has a function that prevents it from executing the predetermined control if the vehicle's original keyless entry control unit 300 does not recognize that a person has touched the door handle of the designated door of the vehicle prior to the predetermined control. In such a vehicle, the predetermined control can be made to the vehicle by wirelessly operating a user's portable device from a remote location away from the vehicle.

[0061] In a configuration that includes a control portion for causing the vehicle's original keyless entry control unit 300 to recognize that a predetermined door lock of the vehicle has been released, in a vehicle that has a function to not execute the predetermined control if the vehicle's original keyless entry control unit 300 does not recognize that a predetermined door lock of the vehicle has been released prior to the predetermined control, the predetermined control can be made to the vehicle by wirelessly operating a user's portable device from a remote location away from the vehicle.

[0062] In a configuration that includes a control portion for causing the vehicle's original keyless entry control unit 300 to recognize that a predetermined door of the vehicle has been opened, in a vehicle that has a function to not execute the predetermined control if the vehicle's original keyless entry control unit 300 does not recognize that a predetermined door of the vehicle has been opened prior to the predetermined control, the predetermined control can be made to the vehicle by wirelessly operating a user's portable device from a remote location away from the vehicle.

[0063] As for the vehicle, it is preferable to have a vehicle with a so-called immobilizer function, as in this embodiment. For example, it is preferable to have a vehicle that performs authentication using wireless information between the genuine portable device 100 and the vehicle, performs predetermined control if authentication is successful, and does not perform predetermined control if authentication is unsuccessful. In such a vehicle, wireless transmission and reception of information takes place between the genuine portable device 100 and the vehicle. However, the vehicle has predetermined controls (such as engine starting) that it wants to perform only after detecting that a driver with the genuine portable device 100 is inside the vehicle. However, since wireless communication is used for communication between the genuine portable device 100 and the vehicle's genuine keyless entry control unit 300, there is a problem that it is difficult to determine by wireless communication whether the genuine portable device 100 is outside or inside the vehicle. For example, if the output of the radio waves transmitted inside the vehicle is weakened, there are cases where communication inside the vehicle is not possible, and if it is strengthened, there is a problem that communication will occur even when the genuine portable device 100 is outside the vehicle. Therefore, some vehicles have a genuine keyless entry control unit 300 that detects more strictly than before whether a driver is inside the vehicle. In such vehicles, it is desirable to detect the operations required when the driver gets in from outside the vehicle. Therefore, for example, "a remote control system for a vehicle comprising a portable device 8 equipped with a function to send wireless signals for remotely operating a vehicle, and an on-board unit 9 retrofitted to the vehicle that receives wireless signals from the portable device 8 and performs a control to cause the vehicle to perform a predetermined control, wherein the on-board unit 9, upon receiving the predetermined wireless signal, performs a control to recognize that an operation required when the driver gets in from outside the vehicle has occurred, and then performs the predetermined control on the vehicle." In particular, in such vehicles, "the on-board unit, upon receiving the predetermined wireless signal, performs at least one of the following: a control to recognize that a person has touched the door handle of a predetermined door of the vehicle, a control to recognize that a predetermined door lock of the vehicle has been released, and a control to recognize that a predetermined door of the vehicle has been opened, and then performs the predetermined control on the vehicle."

[0064] "Remote" refers to a location outside the vehicle, beyond the communication range of the vehicle's original portable device 100, preferably several tens of meters to several kilometers. The portable device 8 may be a mobile phone or smartphone, and control may be performed via a 5G or LTE network. However, it is particularly desirable to use it as a remote control that allows control of a vehicle parked in the home's parking lot from inside the home.

[0065] In this embodiment, "operation" is defined as pressing a button, but it may also be detected by a predetermined change in a sensor or the like provided by the portable device 8. However, it is preferable to have an input means for receiving user operations, and to output a wireless signal when a predetermined operation is detected on the input means, although this is not limited to a button as in this embodiment.

[0066] The "wireless signal" should be configured to transmit radio waves with characteristics such as frequency and output that can reach particularly "remote" ranges. In particular, it is good to use a frequency band different from the frequency band used by vehicles. For example, it should be a specified low-power radio station telecontrol radio equipment that complies with the technical standards. In particular, the frequency band should be 420MHz and the transmission output should be 1mW or less. Alternatively, the 920MHz band should be 920mW or less and the transmission output should be 20mW or less, and in particular, the transmission output should be 10mW or less.

[0067] The "portable device 8" should be a different portable device from the vehicle's original portable device 100. The "portable device 8" should be equipped with an input means for inputting the aforementioned operations. The input means may be a touch panel or the like, but it is preferable to use a switch. Various types of switches can be used as switches, for example, a capacitive switch may be used, but a tact switch is particularly preferable. The "portable device 8" should be equipped with a portable device-side transmission means capable of transmitting "wireless signals".

[0068] The "predetermined control" in "control to cause the vehicle to perform predetermined control" is particularly useful as control necessary to create a state in which the driver can comfortably depart when they get into the vehicle, and in particular, it is useful to create a state in which the air conditioner can be operated. In particular, in vehicles that have an engine that is not driven by a motor, it is useful to have control to start the engine as in the embodiment described above. On the other hand, in vehicles that are driven by a motor, it is useful to have control to create a state in which the so-called main power is turned on. For example, it is useful to have control to change the state in which the vehicle's tires are driven from a non-driveable state to a driveable state.

[0069] As for "control to cause the vehicle to perform predetermined actions," for example, it would be a control that sends a signal to the vehicle's genuine keyless control unit 300 that simulates the operation of pressing the push-start button while the vehicle's brake is pressed. For example, the vehicle's genuine keyless control unit 300 would be connected to the brake line and the signal line of the push-start switch to which the vehicle's genuine keyless control unit 300 is connected, and the system would send signals to these signal lines indicating that the brake has been pressed and that the push-start switch has been pressed. The "in-vehicle unit 9" should be equipped with an in-vehicle unit receiving means capable of receiving wireless signals transmitted by the portable device. The "in-vehicle unit 9" may be implemented in a single enclosure, or it may be implemented using multiple enclosures or other components.

[0070] The "predetermined radio signal" may be a radio signal that causes the vehicle to perform a predetermined control, for example, a radio signal having a specific pattern for instructing the vehicle to perform a predetermined control. For example, a radio signal containing specific data for instructing the vehicle to perform a predetermined control. "When a predetermined radio signal is received" should ideally be defined as within a predetermined time after the predetermined radio signal is received. In particular, it is ideal to define it as immediately after the predetermined radio signal is received.

[0071] As "control to cause the vehicle's original keyless entry control unit 300 to recognize that a person has touched the door handle of a designated door of the vehicle," it is preferable to perform control such as outputting a signal equivalent to when a person touches the door handle to a connection line connected to a sensor unit or switch unit that detects when a person has touched the designated door handle of the vehicle's original keyless entry control unit 300, or to transmit information indicating that a person has touched the door handle of a designated door from the control means of the in-vehicle unit 9 connected to the in-vehicle network to the in-vehicle network, so that the vehicle's original keyless entry control unit 300 receives information indicating that a person has touched the door handle of a designated door via the in-vehicle network. The designated door handle may be any door handle of the vehicle, but it is particularly preferable to use the driver's side door handle as in the embodiment described above.

[0072] "Control to cause the vehicle's original keyless entry control unit 300 to recognize that a predetermined door lock of the vehicle has been released" may be a control that outputs a signal equivalent to that when a predetermined door lock is released to a connection line connected to a sensor unit or switch unit that detects when a predetermined door lock is released, or the control means of the in-vehicle device 9 connected to the in-vehicle network may transmit information indicating that a predetermined door lock has been released to the in-vehicle network so that the vehicle's original keyless entry control unit 300 receives information indicating that a predetermined door lock has been released via the in-vehicle network. The designated door lock could be any door lock on the vehicle, but it is particularly preferable to use the driver's side door lock.

[0073] The "control to cause the vehicle's original keyless entry control unit 300 to recognize that a predetermined door of the vehicle has been opened" may be a control that outputs a signal equivalent to that when a predetermined door is opened to a connection line connected to a sensor unit or switch unit that detects when a predetermined door has been opened by the vehicle's original keyless entry control unit 300, or a control means of the in-vehicle unit 9 connected to the in-vehicle network that transmits information indicating that a predetermined door has been opened to the in-vehicle network so that the vehicle's original keyless entry control unit 300 receives information indicating that a predetermined door has been opened via the in-vehicle network. The designated door may be any door on the vehicle, but it is especially preferable to use the driver's side door.

[0074] The signal line connected to the vehicle's original keyless entry control unit 300 may be a signal line indirectly connected to the vehicle's original keyless entry control unit 300, but it is preferable to use a signal line directly connected to the vehicle's original keyless entry control unit 300, as in the embodiment described above. Furthermore, in the embodiment described above, the signal line connected to the vehicle's original keyless entry control unit 300 was simply connected to the signal line between the original keyless entry control unit 300 and the controlled object. However, in the embodiment described above, the signal line connected to the original keyless entry control unit 300 may be connected to the signal line on the original keyless entry control unit 300 side that has been cut from the signal line between the original keyless entry control unit 300 and the controlled object (e.g., a door handle, door lock, switch or sensor that detects the state of the door). In this configuration, while the vehicle's original keyless entry control unit 300 is performing the control for recognition, the recognized signal is output to the signal line on the original keyless entry control unit 300 side (regardless of the state of the signal line on the controlled object side that has been cut from the signal line between the original keyless entry control unit 300 and the controlled object). On the other hand, while the vehicle's original keyless entry control unit 300 is not performing the control for recognition, the state of the signal line on the controlled object side that has been cut from the signal line between the original keyless entry control unit 300 and the controlled object may be output.

[0075] The in-vehicle network may be a signal line of an in-vehicle network indirectly connected via a predetermined circuit, such as a predetermined gateway ECU, but it is preferable to use a signal line of an in-vehicle network connected without going through a predetermined gateway ECU. The sending of a signal in which the original keyless control unit 300 recognizes that the controlled object is in a predetermined state should be performed repeatedly. When the original keyless control unit 300 (e.g., engine ECU) detects a status inquiry signal for the controlled object, it is preferable for the original keyless control unit 300 (e.g., engine ECU) to send a signal in recognition that it is in a predetermined state before the original keyless control unit 300 of the controlled object (e.g., body ECU) sends a response signal to the inquiry signal. The in-vehicle unit 9 may perform a door locking control after the first stage control, as in the embodiment described above.

[0076] In this way, even in vehicles where the vehicle's door locks are released by the first-stage control from the in-vehicle unit 9, the door locks can be locked when a predetermined control command is given remotely from the portable device. Therefore, it is possible to prevent unauthorized entry and vandalism or theft of the vehicle while the doors remain unlocked, and to allow the vehicle to perform predetermined controls based on instructions from the portable device.

[0077] Furthermore, after the first stage control, the in-vehicle unit 9 may check whether the door is unlocked and, if the door is locked, not perform a control to lock the door, but if the door is unlocked, perform a control to lock the door and then perform a predetermined control to the vehicle. The control to lock the door may be performed by outputting a signal to drive the actuator (e.g., a motor or solenoid) to a signal line connected to the signal line that drives the actuator to lock the door, or by outputting a signal to lock the door to the in-vehicle network.

[0078] After the first stage control (S1), the second stage control (S2 to S6), which is a predetermined control of the vehicle, may be performed, as in the embodiment described above. However, it may also be performed after the first stage control (S1) and before the second stage control (S2), which is a predetermined control of the vehicle, that is, for example, between S1 and S2. Doing so can further reduce the possibility of theft or vandalism inside the vehicle. The first stage of control may involve checking the vehicle's door lock status and refraining from performing the action if the doors are unlocked, while performing it only if the doors are locked.

[0079] The condition that the door lock is not locked may be defined as when the door lock is not detected or when the door is detected unlocked. The door lock status may be obtained by connecting to a signal line used by the vehicle's original keyless entry control unit 300 to detect the door lock, obtaining a signal regarding the vehicle's door lock status transmitted via the in-vehicle network, or obtaining the status by installing a new sensor near the door lock. [Second Embodiment]

[0080] Figure 4 shows a second embodiment of a vehicle remote control system using the relay system of the present invention. Based on Figure 4, the basic configuration that forms the basis of this system will be explained while describing the operation of the communication processing. This system comprises a vehicle control device 1 installed in the vehicle (corresponding to the vehicle-side genuine keyless control unit 300 (ECU) in the first embodiment), a vehicle relay device 2 (corresponding to the in-vehicle unit (device body) 9 in the first embodiment), a portable relay device 3 (corresponding to the portable device (slave unit) 8 in the first embodiment), and a portable device 4 (corresponding to the genuine portable device 100 in the first embodiment). The following will explain the differences in correspondence with the first embodiment, and the explanation of the same configuration will be omitted. In the first embodiment, the genuine portable device 100 was placed inside the vehicle, but in the second embodiment, the portable device 4, together with the portable relay device 3, is taken out of the vehicle and carried by the driver. The authentication information stored in the portable device 4 is relayed to the vehicle control device 1 connected to the vehicle relay device 2 via communication between the portable relay device 3 and the vehicle relay device 2.

[0081] The vehicle control device 1 is a device for controlling predetermined equipment of a vehicle. This control of predetermined equipment is for starting the vehicle into a drivable state in response to user operations such as pressing a push-start button. Examples include turning on the starter motor (engine start) in an automobile powered by an internal combustion engine, or turning on the power to the electric motor in an electric vehicle powered by an electric motor. The following explanation will use "engine start" as an example.

[0082] In this embodiment, the vehicle control device 1 performs control such as engine starting, prior to controlling the equipment of the vehicle to be controlled, on the condition that the authentication information stored in the portable device 4 matches the authentication information stored in the vehicle control device 1.

[0083] To perform the aforementioned processing, the vehicle control device 1 and the portable device 4 are configured to be able to communicate wirelessly with each other. To perform the aforementioned processing, the vehicle control device 1 comprises a control unit 1a, a transmitting / receiving unit 1b, and an authentication information storage unit 1c. Although not shown in the diagram, the vehicle control device 1 is connected to the vehicle's battery and receives power from the battery. The vehicle control device 1 communicates with the equipment of the vehicle to be controlled, for example, via wired communication, and controls the equipment. The authentication information storage unit 1c is a non-volatile storage means and stores the authentication information of a legitimate portable device 4. The authentication information may be, for example, an ID code. If there are multiple legitimate portable devices 4, the authentication information of each of those multiple portable devices 4 is stored.

[0084] The control unit 1a is configured, for example, by an MPU. The control unit 1a has functions such as outputting control signals to control the equipment of the vehicle to be controlled, and outputting command data, such as a response request signal (LF data) to confirm the presence of a legitimate portable device 4, when communicating with other devices based on the authentication information stored in the authentication information storage unit 1c.

[0085] The transceiver unit 1b communicates wirelessly with the transceiver unit implemented in the portable device 4 or the vehicle relay unit 2. The transceiver unit 1b is composed of, for example, an in-vehicle transceiver RFIC. This transceiver unit 1b has the function of wirelessly transmitting LF data such as various commands and data output from the control unit 1a at the first frequency, and the function of receiving RF data such as commands and data wirelessly transmitted from other devices at the second frequency and passing it to the control unit 1a. The second frequency is a higher frequency than the first frequency, and the communication range of RF data using the second frequency is also longer. For example, the first frequency is 134 kHz and the second frequency is 314 MHz.

[0086] The portable device 4 is what is called, for example, a smart key or an original key. The portable device 4 comprises a control unit 4a, a transmitting / receiving unit 4b, and an authentication information storage unit 4c. The portable device 4 is powered by a built-in primary battery. Using commercially available dry cell batteries or button batteries is preferable because they are easily available, easy to implement, and easy to handle. In particular, using button batteries is preferable because it allows for miniaturization of the portable device 4.

[0087] 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. When the control unit 1a receives a response request signal addressed to itself from the vehicle control device 1 which forms a pair, it outputs a response signal (RF data: response data). The transceiver unit 4b performs wireless communication with the transceiver unit implemented in the vehicle control device 1 and the portable relay unit 3. For example, it is configured by an in-vehicle transceiver RFIC. This transceiver unit 4b has the function of receiving LF data such as command data that has been wirelessly transmitted on the first frequency and passing it to the control unit 4a, and the function of wirelessly transmitting RF data such as various command data such as response signals output from the control unit 4a on the second frequency.

[0088] When the control unit 1a of the vehicle control device 1 meets the transmission timing requirements, such as receiving a predetermined signal, it accesses the authentication information storage unit 1c, retrieves the stored authentication information ID code, and outputs a response request signal (LF data) containing that ID code. The predetermined signal is, for example, the foot brake signal output when the vehicle's foot brake pedal is pressed. If the portable device 4 is within the communication range of the response request signal and receives the response request signal, the portable device 4 wirelessly transmits a response signal containing its own authentication information. As described above, the control unit 1a of the vehicle control device 1 performs the engine start process, with the condition that it receives a response signal containing legitimate authentication information within a certain time after outputting the response request signal.

[0089] The communication range between the vehicle control device 1 and the portable device 4 is relatively short, as it is sufficient if communication is possible, for example, when a driver carrying the portable device 4 is sitting in the driver's seat and operating the engine start function. This relatively short distance is about 1 to 2 meters, assuming the first frequency for transmitting LF data is 134 kHz. In this embodiment, a vehicle relay unit 2 and a portable relay unit 3 are provided, and the communication range is extended by relaying the wireless communication between the vehicle control device 1 and the portable device 4 using these relay units. By extending the communication range in this way, this system allows, for example, a user carrying the portable relay unit 3 and the portable device 4 to perform authentication using authentication information between the vehicle control device 1 and the portable device 4 even when they are relatively far from the vehicle, and to start the engine from that distant location.

[0090] The vehicle relay unit 2 is placed in a predetermined location within the vehicle. The vehicle relay unit 2 comprises a control unit 2a that controls the vehicle relay unit 2, a first vehicle-side transceiver 2b for wireless communication with the vehicle control device 1, and a second vehicle-side transceiver 2c for wireless communication with the portable relay unit 3. Although not shown in the diagram, the vehicle relay unit 2 is connected to the vehicle's battery and receives power from the battery. The control unit 2a is configured, for example, by an MPU and performs its function by executing a stored program. The first vehicle-side transceiver 2b and the second vehicle-side transceiver 2c are each configured by an in-vehicle transceiver RFIC.

[0091] The first vehicle-side transceiver unit 2b transmits and receives data with the transceiver unit 1b of the vehicle control device 1. It receives radio waves transmitted wirelessly on the transmission frequency band (first frequency) of the transceiver unit 1b and transmits them wirelessly on the second frequency. Because the communication distance is short, it uses weak radio waves used by low-power radio stations, which are a type of radio station. The second vehicle-side transceiver unit 2c uses radio waves in the frequency band used by specific low-power radio stations. By using this specific low-power wireless communication, the communication distance can be reduced to, for example, 1-2 km in a clear line of sight, and even with obstacles, it can be reduced to, for example, several hundred meters. Therefore, even if the home is a detached house or an apartment building and the vehicle is parked in a parking lot on the premises, communication with the vehicle control device 1 is possible.

[0092] Furthermore, in this embodiment, the vehicle relay unit 2 and the vehicle control device 1 are connected by a communication cable for wired communication. The control unit 2a of the vehicle relay unit 2 uses this wired communication to send a signal similar to the signal corresponding to the change in capacitance caused by touching the door handle on the outside of the driver's seat, and then transmits a foot brake signal and an engine start request signal. The foot brake signal is a signal that corresponds to the signal output when the vehicle's foot brake pedal is pressed. The engine start request signal is a signal that corresponds to the signal output when, for example, the vehicle's push start button is pressed.

[0093] The portable relay unit 3 comprises a control unit 3a that controls the portable relay unit 3, a first portable-side transmitting / receiving unit 3b for communicating with the portable device 4, and a second portable-side transmitting / receiving unit 3c for communicating with the vehicle relay unit 2. Furthermore, the portable relay unit 3 comprises an operation unit 3d and a notification unit 3e.

[0094] The control unit 3d is a push-button switch that corresponds to operation commands such as a start switch and a stop switch. A user located away from the vehicle can remotely control the vehicle by pressing the control unit 3d to operate the vehicle control device 1 mounted on the vehicle, thereby starting or stopping the engine. To perform this process, when the control unit 3a detects an operation on the control unit 3d, it transmits an instruction command corresponding to that operation from the second mobile phone side transceiver unit 3c. The power supply for the mobile repeater 3 is a built-in primary battery. Using commercially available dry cell batteries or button batteries is preferable because they are easily available, easy to install, and easy to handle. In particular, using button batteries is preferable because it allows for miniaturization of the mobile repeater 3.

[0095] The notification unit 3e notifies the operating status, etc., for example, of the execution results such as successful engine start or errors sent from the vehicle control device 1 and the vehicle relay unit 2. The notification unit 3e uses visual or auditory means to notify. In the case of using visual means, the notification unit 3e may use a display panel to show the execution results in characters, figures, etc., or use a light-emitting means such as an LED to notify by the lighting state (flashing / off / on) or the color of the light emitted. In the case of using auditory means, the notification unit 3e may use a speaker to notify with sound or a buzzer, for example. These can be implemented one or more of these methods in combination.

[0096] The control unit 3a is composed of, for example, an MPU. The first mobile phone-side transceiver unit 3b and the second mobile phone-side transceiver unit 3c are each composed of an in-vehicle transceiver RFIC. The first mobile phone-side transceiver unit 3b wirelessly transmits at the receiving frequency band (first frequency) of the transceiver unit 4b of the mobile device 4 and wirelessly receives at the transmitting frequency (second frequency) of the transceiver unit 4b. Since the communication distance is short, weak radio waves used in low-power radio stations, which are a type of radio station, are used. The second mobile phone-side transceiver unit 3c uses radio waves in the frequency band used for specific low-power radio stations.

[0097] In this embodiment, remote engine starting using the relay function is made possible through the communication transitions shown in Figures 4 and 5. (0) The control unit 3a of the portable relay unit 3 outputs a start signal when the operation unit 3d is pressed. The second portable side transceiver unit 3c wirelessly transmits this start signal to the vehicle relay unit 2.

[0098] (1) The second vehicle-side transmitting / receiving unit 2c of the vehicle relay unit 2 receives the start signal transmitted from the portable relay unit 3. When the control unit 2a of the vehicle relay unit 2 receives the start signal, it transmits a door handle contact signal to the vehicle control device 1 using the wired communication function. In this embodiment, it transmits a signal similar to the signal corresponding to the change in capacitance caused by touching the door handle on the outside of the driver's seat. After that, it waits for a predetermined time (although it is shown briefly in Figure 5, in reality it is good to set it to, for example, 10 seconds as in the first embodiment). After that, it transmits a foot brake signal as shown in Figure 5. As shown in Figure 5, the vehicle relay unit 2 maintains the foot brake signal ON state during the relay and transmission processing of each data signal shown below.

[0099] (3) When the control unit 1a of the vehicle control device 1 receives the foot brake signal, it accesses the authentication information storage unit 1c, obtains the stored authentication information ID code, and outputs a response request signal (LF data) containing the ID code. The transmitting / receiving unit 1b transmits the LF data using its wireless transmission function.

[0100] (4) The first vehicle-side transmitting / receiving unit 2b of the vehicle relay unit 2 receives the LF data. The vehicle relay unit 2 wirelessly transmits wireless LF data based on the received LF data to the portable relay unit 3 using the transmission function of the second vehicle-side transmitting / receiving unit 2c. Wireless LF data is data that is reversible with LF data.

[0101] (5) The second mobile phone side transceiver 3c of the mobile repeater 3 receives the wireless LF data. The mobile repeater 3 generates the original LF data from the received wireless LF data and transmits the generated LF data to the mobile device 4 at the first frequency using the transmission function of the first mobile phone side transceiver 3b.

[0102] (6) The LF data transmitted by the portable relay unit 3 is transmitted at the first frequency and is equivalent to the LF data transmitted by the transceiver unit 1b of the vehicle control device 1, so the transceiver unit 4b of the portable device 4 receives the LF data. The control unit 4a determines whether the received LF data is addressed to itself. Specifically, it determines whether the ID code included in the LF data matches its own ID code stored in the authentication information storage unit 4c. If the ID codes match, it transmits the RF data (response data), which is a response signal, using the transmission function of the transceiver unit 4b. If the ID codes do not match, the control unit 4a does not transmit anything.

[0103] (7) The first mobile phone side transceiver 3b of the mobile phone repeater 3 receives RF data. The mobile phone repeater 3 transmits wireless RF data based on the received RF data using the transmission function of the second mobile phone side transceiver 3c. Wireless RF data is data that is reversible with LF data.

[0104] (8), (9) The second vehicle-side transceiver 2c of the vehicle relay unit 2 receives wireless RF data. The vehicle relay unit 2 generates the 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 transceiver 2b. In addition, the control unit 2a of the vehicle relay unit 2 transmits an engine start request signal to the vehicle control device 1 using the wired communication function prior to the transmission of RF data from the first vehicle-side transceiver 2b. The vehicle relay unit 2 transmits the above RF data wirelessly while maintaining the state in which the engine start request signal is ON.

[0105] The transceiver unit 1b of the vehicle control device 1 receives RF data sent from the vehicle relay unit 2. The control unit 1a authenticates whether the received RF data is legitimate RF data (response data) from the portable device 4. If the authentication result is that the RF data is legitimate RF data from the portable device 4, and both the engine start request signal and the foot brake signal are ON, the control unit performs the engine start operation. Subsequently, as shown in Figure 5, the control unit 2a of the vehicle relay unit 2 transmits a door lock signal to the vehicle control device 1 using the wired communication function. The vehicle doors are locked in response.

[0106] Furthermore, after a certain period of time has elapsed since the engine started, the control unit 1a controls the engine to stop. Continuing this engine operation allows for warm-up and the vehicle's air conditioning system to adjust the cabin temperature to a suitable level.

[0107] Furthermore, if the engine is to be stopped during warm-up, the user operates the control unit 3d of the portable relay unit 3. When the portable relay unit 3 receives a stop command in response to the operation of the control unit 3d, it transmits the stop command. The transmitted stop command reaches the vehicle control device 1 via the vehicle relay unit 2. When the control unit 1a receives the stop command, it performs control to stop the engine that is currently running. In addition, the control unit 1a relays and transmits the execution result of the received operation command in the same way as LF data, and when it reaches the portable relay unit 3, it notifies the user of the result. Variations of this embodiment are the same as those of the first embodiment. [Other embodiments]

[0108] Furthermore, the scope of the present invention is not limited to the configurations explicitly described in the specification, but also includes combinations of various aspects of the present invention disclosed herein. While the configurations for which patent protection is sought are specified in the appended claims, we intend to include configurations disclosed herein that are not currently specified in the claims in the future.

[0109] The present invention is not limited to the configuration described in the embodiments above. The components of each embodiment and modification described above can be arbitrarily selected and combined. Furthermore, any component of each embodiment and modification can be arbitrarily combined with any component described in the means for solving the invention, or any component that embodies any component described in the means for solving the invention. The present application intends to obtain rights to these as well through amendments or divisional applications. Even if there is a description such as "in the case of..." or "when...", it is not meant to be a configuration that is limited to that case or time. Configurations that do not fall under these cases or times are also disclosed, and the present application intends to obtain rights to them. Also, even if there is a sequence of descriptions, it is not limited to that order. Configurations with some parts deleted or the order rearranged are also disclosed, and the present application intends to obtain rights to them.

[0110] Furthermore, by converting to a design registration application, we intend to acquire rights to the overall design or a partial design. The drawing depicts the entire device with solid lines, but it is a drawing that includes not only the overall design but also partial designs claimed for parts of the device. For example, it is a drawing that includes not only a partial design for a part of the device's components, but also a partial design for a part of the device regardless of its components. A part of the device may be a component of the device, or a part of a component. We intend to acquire rights not only to the overall design, but also to a partial design where any part of the solid lines in the drawing is represented by dashed lines. In addition, all modules, components, and parts inside the device's casing that are shown in the drawing are independently tradable, and similarly, we intend to acquire rights to them by converting to a design registration application. [Explanation of Symbols]

[0111] 100 Genuine portable devices 200 Engine start switch 300 Genuine Keyless Entry Control Unit 400 Starter Motor 500 Door lock section 600 Door knob sensor 800 handheld devices 900 Onboard equipment 1. Vehicle control system 1a Control Unit 1b Transceiver Unit 1c Authentication information storage unit 2 Vehicle relay station 2a Control section 2b First vehicle-side transceiver unit 2c Second vehicle-side transceiver unit 2D parameter storage unit 2e News Department 3. Portable repeater 3a Control Unit 3b First mobile phone side transceiver 3c Second mobile phone side transceiver 3d control unit 3e News Department 3f Parameter storage unit 3g setting switch 3h Normal LF data information storage unit 4. Handheld devices 4a Control Unit 4b Transceiver Unit 4c Authentication information storage unit

Claims

1. A remote control system for a vehicle comprising a portable device equipped with a function to transmit wireless signals for remotely operating a vehicle, and an aftermarket in-vehicle device that receives wireless signals from the portable device and controls the vehicle to perform predetermined operations, When the aftermarket in-vehicle unit receives the predetermined wireless signal, it performs a first-stage control which is at least one of the following controls: a first control which causes the vehicle's control unit to recognize that a person has touched the door handle of a predetermined door of the vehicle; a second control which causes the vehicle's control unit to recognize that a predetermined door lock of the vehicle has been released; and a third control which causes the vehicle's control unit to recognize that a predetermined door of the vehicle has been opened. Perform the second-stage control, which is the predetermined control for the vehicle. A remote control system characterized by the following.

2. The aftermarket in-vehicle unit is equipped with a function to perform control to lock the doors after the first stage of control. The remote control system according to claim 1, characterized by the following:

3. The aforementioned first-stage control includes a function to prevent it from being performed when the vehicle's doors are unlocked. A remote control system according to claim 1 or 2, characterized by the following:

4. A program for a computer to implement the functions of the remote control system described in any one of claims 1 to 3.

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