JP2017206038A - Transmitter diagnostic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmitter diagnostic device which enhances convenience for a user.SOLUTION: A transmitter diagnostic device comprises: a tank state acquisition part which acquires a state in a tank mounted on a vehicle which is driven by use of a fuel gas stored in the tank as a fuel; a transmission part which transmits a radio signal including the state in the tank acquired by the tank state acquisition part to a predetermined transmission destination; a transmission control part which causes the transmission part to transmit the radio signal; a condition determination part which determines whether predetermined disconnection diagnostic condition is established or not; a diagnosis part which diagnoses whether a signal line, which connects the transmission control part and the transmission part to each other, is disconnected or not when the disconnection diagnostic condition is established; and a ride intention determination part which determines whether a user of a vehicle has an intension of riding on the vehicle or not. The condition determination part determines that the disconnection diagnostic condition is established when the ride intension determination part determines that the user has an intension of riding on the vehicle.SELECTED DRAWING: Figure 1

Description

  The present invention is mounted on a vehicle that is driven by using a fuel gas such as hydrogen as a fuel, and transmits to diagnose whether or not a transmitter that transmits a state in a tank filled with fuel gas to a gas station operates normally. The present invention relates to a machine diagnostic apparatus.

  The fuel cell vehicle is provided with a tank filled with hydrogen, and when the hydrogen in the tank becomes low, hydrogen is replenished at the hydrogen station. In a fuel cell vehicle, an infrared transmitter is disposed at a hydrogen filling port, and when hydrogen is replenished, the temperature and pressure in the tank are transmitted to the hydrogen station by the infrared transmitter (see Patent Document 1). The hydrogen station controls hydrogen filling (hydrogen filling pressure or the like) based on the received temperature and pressure in the tank.

  Also, in the SAE (Society of Automotive Engineers) standard that defines the hydrogen filling protocol, the temperature and pressure in the tank are transmitted to the hydrogen station side by infrared communication, and the temperature and pressure are within the appropriate range on the hydrogen station side. After confirming this, it is stipulated that filling is performed at a high hydrogen filling pressure (SAE standard J2601 / J2799). On the other hand, when the temperature or pressure in the tank is not within the appropriate range, hydrogen filling is performed at a lower pressure of hydrogen filling (specifically, 35 MPa).

  In Patent Document 1, it is possible to confirm whether infrared communication is established on the hydrogen station side when hydrogen is charged, but whether or not infrared rays are normally transmitted except when hydrogen is charged, that is, the infrared transmitter is normally operating. It was not possible to confirm whether it would work.

  Therefore, a switch for instructing whether or not the transmitter operates normally is provided in the vehicle based on the user's operation, and when the user operates the switch, the infrared signal is transmitted to the infrared transmitter, and provided separately. A technique is disclosed that allows a receiver to receive a radio signal from an infrared transmitter to check whether the transmitter operates normally regardless of whether or not the gas is charged (Patent Document 2). reference).

JP 2010-236673 A Japanese Patent Laying-Open No. 2015-042525

  In the prior art, the presence or absence of disconnection of the infrared transmitter is determined after a predetermined time has elapsed since the start of infrared communication. Originally, the determination of disconnection requires a certain time so that it is determined that the disconnection occurs when there is no response within a predetermined time. The determination start condition is satisfied when the motor or other prime mover is allowed to start (IG = ON, READY) or when the lid for opening and closing the filling port of the hydrogen tank is closed. You have to wait until it takes longer.

  In Patent Document 2, the operation of the transmitter can be diagnosed regardless of whether or not the gas is filled based on the user's switch operation. However, since a switch for self-diagnosis is necessary, the cost increases accordingly. To do. In addition, since the user has to operate the switch, it can be considered that some users feel annoying.

  In view of the above problems, an object of the present invention is to provide a transmitter diagnostic apparatus that improves user convenience.

  A transmitter diagnostic apparatus for solving the above problems is obtained by a tank state acquisition unit that acquires a state in a tank, and is acquired by a tank state acquisition unit, which is mounted on a vehicle that is driven by using fuel gas stored in the tank as fuel. A transmission unit that transmits a wireless signal including the state inside the tank to a predetermined transmission destination, a transmission control unit that causes the transmission unit to transmit a wireless signal, and whether or not a predetermined disconnection diagnosis condition is satisfied A condition determination unit for determining whether or not a disconnection diagnosis condition is satisfied, a diagnosis unit for diagnosing whether or not a signal line connecting the transmission control unit and the transmission unit is disconnected, and a vehicle user to the vehicle A boarding intention determination unit that determines whether or not there is a boarding intention, and the condition determination unit determines that the disconnection diagnosis condition is satisfied when the boarding intention determination unit determines that the user has a boarding intention To do.

  With the above configuration, diagnosis can be started before the user gets on. Therefore, compared to the configuration in which the diagnosis is started after the user gets on as in the conventional technique, the time from when the user gets on until the diagnosis result is output can be shortened. And the user can grasp | ascertain sooner whether a communication line is normal. Therefore, user convenience is improved.

The figure which shows the structure of a transmitter diagnostic apparatus. The figure which shows the structure around a gas filling port. The figure which shows the example which network-connected the transmitter diagnostic apparatus and the smart entry system. The flowchart which shows a disconnection diagnostic process.

  FIG. 1 illustrates an example in which a transmitter diagnostic device is mounted on a fuel cell vehicle 1 (hereinafter abbreviated as “vehicle”) that is driven using hydrogen as fuel.

  The vehicle 1 includes a hydrogen tank (tank) 20 filled with hydrogen and a fuel cell (not shown) having a known configuration. In the vehicle 1, the hydrogen filled in the hydrogen tank 20 is supplied to the fuel cell, and driving force is obtained by the electric power generated by the fuel cell. Hydrogen is charged at the hydrogen station 40.

  The vehicle 1 is provided with a gas filling port 30 to which a nozzle 43 from the hydrogen station 40 is connected. The gas filling port 30 is provided in the rear part of the side surface of the vehicle 1, for example.

  As shown in FIG. 2, the gas filling port 30 is an opening having a space inside, and a donut-shaped valve (receptacle) 31 to which a nozzle 43 from the hydrogen station 40 is connected is provided in the internal space of the opening. It is done. Further, the lid 15, which is a lid for protecting the gas filling port 30, is hinged to the gas filling port 30.

  In addition, when filling the gas filling port 30 with hydrogen at the hydrogen station 40, an infrared transmitter 32, which is a transmission unit, transmits the state (temperature, pressure) in the hydrogen tank 20 to the hydrogen station 40. Is placed. The infrared transmitter 32 is disposed, for example, at a position adjacent to the bulb 31 and wirelessly transmits the state in the hydrogen tank 20 using infrared rays. The effective transmission range of the infrared transmitter 32 is, for example, about several centimeters to several tens of centimeters.

  Further, the gas filling port 30 is provided with a sensor 33 for detecting that the lid 15 is opened.

  Returning to FIG. 1, the hydrogen tank 20 and the valve 31 are connected by a hydrogen gas pipe 23, and the hydrogen supplied from the nozzle 43 is filled into the hydrogen tank 20 through the hydrogen gas pipe 23.

  The vehicle 1 is provided with a temperature sensor 21 that measures the temperature in the hydrogen tank 20 and a pressure sensor 22 that measures pressure. A plurality of these temperature sensors 21 and pressure sensors 22 are provided.

  Further, the vehicle 1 is provided with a hydrogen filling ECU 10. The hydrogen filling ECU 10 includes a transmission control unit, a condition determination unit, a diagnosis unit, a control unit 11 that is a boarding intention determination unit, a signal input / output circuit, a diagnosis unit, a tank state acquisition unit, and a lid state acquisition unit I / O 12; An interface circuit for communicating with other devices such as the verification ECU 110 or the door ECU 151 via the in-vehicle LAN 190, a verification result acquisition unit, a locked state acquisition unit, a door state acquisition unit, a communication IF 13 as a prime mover state acquisition unit, etc. including.

  The control unit 11 is configured as a computer including a CPU, a memory, peripheral circuits, and the like (all not shown). Various functions of the hydrogen filling ECU 10 are realized by the CPU executing the filling control program stored in the memory.

  The temperature sensor 21, the pressure sensor 22, and the infrared transmitter 32 described above are connected to the control unit 11 via the I / O 12. In particular, the I / O 12 and the infrared transmitter 32 are connected by a communication line 34, and the hydrogen filling ECU 10 determines whether or not the communication line 34 is disconnected as will be described later. The disconnection inside the infrared transmitter 32 may be determined.

  Further, the notification unit 50 is connected to the control unit 11 via the I / O 12. The notification unit 50 includes at least one of a well-known LCD, LED indicator, voice message sending unit, and buzzer. The structure which does not connect the alerting | reporting part 50 may be sufficient.

  In the above-described configuration, for example, when the lid 15 is opened by a user operation and an open signal of the lid 15 is output from the sensor 33, the control unit 11 determines that the hydrogen tank 20 is in a state of filling with hydrogen. To do. And the control part 11 acquires the measured value of the temperature and pressure in the hydrogen tank 20 from the temperature sensor 21 and the pressure sensor 22, and outputs (transmits) the infrared signal which reflected these measured values to the infrared transmitter 32. .

  At this time, if there are variations in the temperature measurement values of the plurality of temperature sensors 21, the control unit 11 causes the infrared transmitter 32 to transmit the temperature measurement value excluding the temperature measurement value that causes the variation. Similarly, for the plurality of pressure sensors 22, if there are variations in the pressure measurement values, the infrared transmitter 32 transmits the pressure measurement values excluding the pressure measurement values that cause the variation. Thereby, even if any of the plurality of temperature sensors 21 and pressure sensors 22 fails, the accurate state (temperature, pressure) in the hydrogen tank 20 can be transmitted to the hydrogen station 40.

  In addition, the control part 11 performs the process regarding hydrogen filling according to the protocol defined in J2601 / J2799 of SAE standard, for example.

  The hydrogen station 40 includes a hydrogen storage unit 41 that stores hydrogen, a filling control unit 42 that controls hydrogen filling, a nozzle 43 that is connected to the valve 31 of the vehicle 1 during hydrogen filling, a nozzle 43 and a hydrogen storage unit 41. A hydrogen gas pipe 44 is provided between the two. You may provide the display part 46 which shows filling amount.

  As shown in FIG. 2, the nozzle 43 includes an inner cylinder 431 and an outer cylinder 432 that are provided at the tip of the hydrogen gas pipe 44 and are coaxially arranged. The inner cylinder 431 has a hollow inside and is a hydrogen supply path. The inner cylinder 431 is provided so as to protrude toward the tip side from the outer cylinder 432, and the protruding portion is connected to the valve 31 of the vehicle 1. A space is formed between the inner cylinder 431 and the outer cylinder 432, and an infrared receiver 45 that receives an infrared signal is disposed therein. The infrared receiver 45 is connected to the filling control unit 42.

  For example, the infrared receiver 45 is arranged over the entire circumference of the inner cylinder 431 and the outer cylinder 432 so as to receive an infrared signal along the axial direction of the nozzle 43. Thereby, the infrared receiver 45 can receive the infrared signal from the infrared transmitter 32 irrespective of the connection direction (connection direction in the circumferential direction) of the nozzle 43 in the gas filling port 30.

  The filling control unit 42 controls hydrogen filling in accordance with, for example, a protocol defined in SAE standard J2601 / J2799. Specifically, the filling control unit 42 causes the infrared receiver 45 to receive an infrared signal from the vehicle 1 (infrared transmitter 32) when the nozzle 43 is connected to the valve 31 and is ready for hydrogen filling. The state (temperature, pressure) in the hydrogen tank 20 reflected in the infrared signal is acquired.

  Then, after confirming that the acquired temperature and pressure are included in the appropriate range, the filling control unit 42 sets the hydrogen filling pressure, which is the pressure sent from the hydrogen storage unit 41 to the nozzle 43, to 70 MPa, for example. Then, hydrogen is ejected from the nozzle 43 to perform hydrogen filling.

  In addition, the filling control unit 42 cancels from the hydrogen filling ECU 10 such as “Abort” when the temperature or pressure acquired from the infrared receiver 45 is not included in the appropriate range or the acquired communication content is, for example, “Abort”. When the request is included, for example, the hydrogen filling is stopped or the hydrogen filling pressure is set to a low pressure (for example, 35 MPa) and the hydrogen filling is continued. Further, the filling control unit 42 may be configured to receive, for example, a hydrogen filling pressure when the infrared receiver 45 cannot receive temperature or pressure due to a failure of the infrared transmitter 32 or the like even though the nozzle 43 is connected to the valve 31. Set to low pressure and perform hydrogen filling.

  The filling control unit 42, for example, when the SOC (State of Charge) calculated from the pressure and temperature received by the infrared receiver 45 indicates that the amount of hydrogen in the hydrogen tank 20 is fully filled, End hydrogen filling. Note that SOC is an index indicating the hydrogen filling state, and indicates that SOC 100% is fully filled.

  FIG. 3 shows an example in which the hydrogen filling ECU 10 (transmitter diagnostic device) and the smart entry system are connected to each other via an in-vehicle LAN 190. In FIG. 3, the components of the transmitter diagnostic device other than the hydrogen filling ECU 10 are not shown.

  The smart entry system includes a vehicle-side device 100 mounted on the vehicle 1 and a portable device 200 possessed by the user. The vehicle-side device 100 includes at least a verification ECU 110 and is connected to other devices such as the hydrogen filling ECU 10 or the door ECU 151 via the in-vehicle LAN 190 so as to be communicable.

  The verification ECU 110 is a control unit 111 including a well-known CPU and peripheral circuits (both not shown), a memory 112 using a nonvolatile storage medium such as a flash memory connected to the control unit 111, and a signal input / output circuit. A certain I / O 113, an LF transmitter 114, an RF receiver 115, and a communication IF 116 having the same configuration as the communication IF 13 in FIG. Various functions of the verification ECU 110 are realized by the control unit 111 executing the verification control program stored in the memory 112.

  The LF transmission unit 114 uses, for example, an LF (long wave) band (which may be a super long wave band), for example, an indoor antenna (not shown) attached to the lower portion of the center console, and the door 150. A radio signal such as a response request signal is transmitted through the included door antenna 156 or the like. A radio signal arrives only within a predetermined transmission area from each antenna.

  The RF receiving unit 115 includes an antenna, and receives a radio signal such as a response signal for responding to a response request signal transmitted from the portable device 200 using, for example, an RF (high frequency) band radio wave.

  A start switch 117 is connected to the verification ECU 110 via the I / O 113. The start switch 117 is a switch operated by the user when starting a prime mover such as a driving motor for the vehicle 1. When the start switch 117 detects that the user has operated the start switch 117, the verification ECU 110 displays the verification result. Based on this, it is determined whether or not the start of the prime mover can be permitted. When the start can be permitted, a start permission signal is output from the verification ECU 110 to the device of the prime mover control system.

  The door 150 includes a door ECU 151, a door handle 153, a door lock device 154 connected to the door ECU 151, a courtesy switch 155, and a door antenna 156 connected to the LF transmitter 114.

  The door 150 corresponds to, for example, a driver seat door. Regarding the other doors, the configuration is the same as that of the door 150, and the number of doors differs depending on the vehicle.

  Door ECU 151 includes a well-known CPU, memory, and peripheral circuits (all not shown). The CPU executes various functions of the door ECU 151 by executing the door control program stored in the memory. Further, the door ECU 151 is connected to the in-vehicle LAN 190 and can perform data communication with other devices such as the hydrogen filling ECU 10 or the verification ECU 110.

  The door handle 153 is attached to the outside of the vehicle and includes a sensor 153a and a switch 153b operated by the user. The sensor 153a unlocks the door, and the switch 153b is used to lock the door. These sensor 153a and switch 153b are connected to door ECU 151. The door may be locked / unlocked with a single sensor or switch.

  The door lock device 154 includes a known door lock mechanism and an actuator that drives the door lock mechanism. Based on a control command from the door ECU 151, the door lock mechanism is driven to switch to a locked state or an unlocked state.

  Courtesy switch 155 detects the open / closed state of the door. A configuration may be employed in which a courtesy switch 155 is connected to a body ECU that performs overall control of a body system device such as a lighting device and a power window, and the state of the courtesy switch 155 is acquired from the body ECU.

  The door ECU 151 determines the state of the courtesy switch 155 (door open / closed state) and the state of the door lock device 154 (locked state or unlocked state) via the in-vehicle LAN 190 at a predetermined timing. Output to the device.

  The portable device 200 includes at least a control unit 210, a memory 211, an LF reception unit 212, an RF transmission unit 213, and an operation unit 214 connected to the control unit 210.

  The control unit 210 is configured as a computer including a known CPU and peripheral circuits such as a signal input / output circuit (both not shown). Then, the control unit 210 executes the portable device control program stored in the memory 211, thereby realizing various functions of the portable device 200.

  The memory 211 is configured by a nonvolatile storage medium such as a flash memory, and stores data necessary for the operation of the portable device 200 such as a portable device control program and an ID code used for collation of the portable device 200.

  The LF receiving unit 212 receives a radio signal such as a response request signal transmitted from the verification ECU 110 using an LF band radio wave. The RF transmission unit 213 transmits a radio signal such as a response signal to the verification ECU 110 using radio waves in the RF band. The response signal includes an ID code for identifying portable device 200.

  The operation unit 214 is configured, for example, as a push switch group for using a remote keyless entry (hereinafter abbreviated as “RKE”) function. When the user operates the operation unit 214, for example, an RKE command for locking / unlocking or opening / closing a door (including a trunk) is transmitted from the RF transmission unit 213.

  With the above configuration, when the user touches the sensor 153a, the door ECU 151 outputs detection information of the sensor 153a to the verification ECU 110. The verification ECU 110 transmits a response request signal from the door antenna 156 provided on the door 150 including the sensor 153a via the LF transmission unit 114. The portable device 200 that has received the response request signal transmits a response signal including an ID code to the verification ECU 110.

  When the verification ECU 110 receives the response signal from the portable device 200 via the RF reception unit 115, the verification ECU 110 compares the received ID code with the master code stored in the memory 112 in advance, and the two match and collate. When normally performed, for example, a control signal including permission to unlock all doors is output to the door ECU 151 and the like.

  Similarly, when the user operates the switch 153b, collation is performed by the collation ECU 110. When the collation is normally performed, for example, a control signal including permission to lock all doors is output to the door ECU 151 and the like.

  The disconnection diagnosis process included in the above-described filling control program in FIG. 4 and executed by the control unit at a predetermined timing will be described. First, in S11, a collation state is acquired from the collation ECU 110. When the above-mentioned collation is performed, the collation ECU 110 transmits the collation result to the outside via the in-vehicle LAN 190 at a predetermined timing.

  Next, the process proceeds to S12, and when the acquired collation state reflects that the collation result is normal, the process proceeds from S12: Yes to S17. This "equipped with a verification result acquisition unit that acquires a result of verification of the portable device based on wireless communication between the portable device possessed by the user and the vehicle-side device mounted on the vehicle, If the smart entry system is mounted on the vehicle, it is possible to determine whether or not the user has a boarding intention if the vehicle is equipped with the smart entry system. Therefore, the existing system can be utilized and the cost increase of the transmitter diagnostic apparatus can be suppressed.

  In the smart entry system, wireless communication is performed at the time of collation. However, since the disconnection diagnosis is started after the collation is normally performed, wireless communication at the time of collation is not hindered. In addition, after the user gets on the vehicle, verification is performed inside the vehicle. However, since the transmission unit is configured to transmit a radio signal to the outside of the vehicle, even if the transmission unit transmits the radio signal for disconnection diagnosis. , It does not hinder verification in the vehicle interior.

  In the above-described configuration, the collation is exemplified as so-called “external vehicle collation” performed when the user exists outside the vehicle. However, the so-called “in-car collation” performed when the user exists in the vehicle interior. It may be determined that there is a willingness to get on when the operation is successfully performed. Even if “external vehicle verification” is performed normally, the user may not get on. On the other hand, “vehicle interior verification” is not executed unless the user is in the vehicle. Therefore, the disconnection diagnosis start timing is delayed as compared with “external vehicle verification”, but the intention to board can be determined more accurately. In addition, when determining a boarding intention by “vehicle interior verification”, the determination of the boarding intention based on the state of the door lock device 154 and the opening / closing state of the door 150, which will be described later, may not be performed.

  On the other hand, when the collation result reflects that it is not normal, the process proceeds from S12: No to S13, and the state of the door lock device 154 transmitted from the door ECU 151 is acquired via the in-vehicle LAN 190. You may acquire via collation ECU110.

  Next, the process proceeds to S14, and when the door lock device 154 changes from the locked state to the unlocked state, the process proceeds from S14: Yes to S17. According to this configuration, “including a locking state acquisition unit that acquires the locking state of the door of the vehicle, and the boarding intention determination unit determines that the user has a boarding intention when the vehicle door changes to the unlocked state”, In particular, if a remote keyless entry system is installed in the vehicle, it can be determined whether or not the user has an intention to board. The existing system can be used and the cost increase of the transmitter diagnostic device can be suppressed.

  When there are a plurality of doors, the states of all the door lock devices may be acquired, and when at least one door lock device changes from the locked state to the unlocked state, it may be determined that there is an intention to get on.

  On the other hand, when the locked state does not change to the unlocked state, the process proceeds from S14: No to S15, and the state of the courtesy switch 155, that is, the open / closed state of the door 150 is acquired from the door ECU 151.

  Next, the process proceeds to S16, and when the door 150 changes from the closed state to the open state, the process proceeds from S16: Yes to S17. With this configuration, “the vehicle is provided with a door state acquisition unit that acquires the open / closed state of the vehicle door, and the boarding intention determination unit determines that the user has a boarding intention when the vehicle door changes to an open state”. Even if the smart entry system and the remote keyless entry system are not installed, it can be determined whether or not the user has an intention to board. An existing device such as a door lock device can be used, and an increase in cost of the transmitter diagnostic device can be suppressed.

  When there are a plurality of doors, the open / closed states of all the doors may be acquired, and when at least one door changes from the closed state to the open state, it may be determined that there is an intention to get on.

  On the other hand, when the state does not change from the closed state to the open state, the process proceeds from S16: No to S20, and it is determined whether another disconnection diagnosis condition is satisfied. The determination in S20 is mainly for performing a disconnection diagnosis after the user gets on. S16: You may complete | finish this process from No.

As the disconnection diagnosis condition, at least one of the following is used.
-When the start switch 117 changes from the off state to the on state and the collation is normally performed, that is, when information indicating that the start permission state has been obtained is obtained from the collation ECU 110, the disconnection diagnosis condition is satisfied. Judged to have done.
-It is determined that the disconnection diagnosis condition is satisfied when information indicating that the vehicle 1 is in a travelable state (also referred to as a ready state or a ready-on state, for example, see JP 2013-119347 A) is obtained from the verification ECU 110. .

  As described above, the condition determination unit includes a prime mover state acquisition unit that acquires the state of the prime mover of the vehicle, and when the ride intention determination unit determines that the user does not have a ride intention, and the prime mover changes to the start permission state, With the configuration of “determining that the disconnection diagnosis condition is satisfied”, for example, it is possible to diagnose disconnection even when the user's intention to board is not confirmed. This situation corresponds to, for example, a case where a known remote engine starter is used to start the prime mover by remote operation or a case where the user turns on the start switch 117 after boarding (a situation where the intention of boarding cannot be determined). .

When the lid 15 changes from the closed state to the open state, it is determined that the start condition is satisfied. If the ride intention determination unit determines that the user has no intention to board, the lid state acquisition unit that acquires the open / close state of the lid that protects the gas filling port for filling the tank with fuel gas is provided. When the state changes to the open state, the condition determination unit determines that the disconnection diagnosis condition has been established, so that disconnection can be diagnosed even when the tank is filled with fuel gas. This situation occurs when the user opens the lid 15 from the outside of the vehicle by operating a key or a remote control (when the lid 15 is not opened and the lid 15 is simply opened for hydrogen filling), or after the user gets on the lid 15 This corresponds to the case where is opened.

  When the disconnection diagnosis condition is satisfied, the process proceeds from S20: Yes to S17. On the other hand, when the start condition is not satisfied, the present process is terminated from S20: No.

  At least one of the above-described determination based on the collation state, determination based on the locked state, and determination based on the door state may be used. That is, S12: No or S14: No, and the process may proceed to S20.

In S17, the disconnection diagnosis of the communication line 34 is started. Any of the following may be used as the method of disconnection diagnosis. Of course, other methods may be used.
The I / O 12 includes a voltage monitoring circuit that monitors the voltage applied to the communication line 34, and diagnoses whether or not the communication line 34 is disconnected based on the change in the voltage (for example, Japanese Patent Application Laid-Open No. 2005-2005). -1656-1621).
The I / O 12 causes a current that does not hinder the operation of the infrared transmitter 32 to flow through the communication line 34, and the communication line 34 is disconnected based on the voltage value output by the infrared transmitter 32 at that time. (For example, refer to JP2013-173415A for details).
A voltage is applied to the capacitor connected between the communication line 34 and the ground to accumulate charge in the capacitor, and the amount of charge accumulated within a predetermined time (that is, the voltage across the capacitor) is measured. If the voltage exceeds the threshold value, it is determined that the communication line 34 is not disconnected.

  Next, the process proceeds to S18, and when it is determined that the communication line 34 has not been disconnected as a result of executing the above-described disconnection diagnosis a predetermined number of times or for a predetermined time, this process is terminated from S18: No. On the other hand, when it is determined that the communication line 34 is disconnected, the process proceeds from S18: Yes to S19, and disconnection information is output. In the case of S18: No, information including that there is no disconnection may be output.

Any of the following may be used to output the disconnection information.
-Disconnection information is output to the alerting | reporting part 50 connected to hydrogen filling ECU10 via I / O12. The notification unit 50 notifies that the communication line 34 is disconnected by a message or indicator display, a voice message or a buzzer sound.
-Disconnection information is output to in-vehicle LAN 190 via communication IF13. Other devices that have acquired the disconnection information (for example, a meter device that displays the speed of the vehicle, a remaining amount of fuel, a navigation device that guides the route to the destination), and the communication line 34 are disconnected in the display unit that each includes Is displayed. A voice message may be output.

  Although the embodiments have been described above, these are merely examples, and are not limited to the above-described embodiments, and various modifications based on the knowledge of those skilled in the art are possible without departing from the scope of the claims. .

1 Fuel cell vehicle (vehicle)
10 Hydrogen filling ECU (transmitter diagnostic device)
11 Control unit (transmission control unit, condition determination unit, diagnosis unit, boarding intention determination unit)
12 I / O (diagnosis unit, tank state acquisition unit, lid state acquisition unit)
13 Communication IF (Verification result acquisition unit, lock state acquisition unit, door state acquisition unit, motor state acquisition unit)
15 Lid 20 Hydrogen tank (tank)
30 Gas filling port 32 Infrared transmitter (transmitter)
34 Communication line 110 Verification ECU (vehicle side device)
200 Mobile device

Claims (7)

Installed in a vehicle that drives fuel gas stored in the tank as fuel,
A tank state acquisition unit for acquiring a state in the tank;
A transmission unit that transmits a wireless signal including the state in the tank acquired by the tank state acquisition unit to a predetermined transmission destination;
A transmission control unit that causes the transmission unit to transmit the wireless signal;
A condition determination unit that determines whether or not a predetermined disconnection diagnosis condition is satisfied;
A diagnostic unit for diagnosing whether or not a signal line connecting the transmission control unit and the transmission unit is disconnected when the disconnection diagnostic condition is satisfied;
A boarding intention determination unit that determines whether or not the user of the vehicle has a boarding intention in the vehicle;
With
The condition determination unit is a transmitter diagnosis device that determines that the disconnection diagnosis condition is satisfied when the boarding intention determination unit determines that the user has a boarding intention. Based on wireless communication between the portable device possessed by the user and a vehicle-side device mounted on the vehicle, comprising a verification result acquisition unit that acquires a result of matching the portable device;
The transmitter diagnostic apparatus according to claim 1, wherein the boarding intention determination unit determines that the user has a boarding intention when the result of the collation is normal. A locking state acquisition unit for acquiring a locking state of the door of the vehicle;
The transmitter diagnostic apparatus according to claim 1 or 2, wherein the boarding intention determination unit determines that the user has a boarding intention when the door of the vehicle changes to an unlocked state. A door state acquisition unit for acquiring an opening / closing state of the vehicle door;
The transmitter diagnostic apparatus according to any one of claims 1 to 3, wherein the boarding intention determination unit determines that the user has a boarding intention when the door of the vehicle changes to an open state. A prime mover state obtaining unit for obtaining a state of the prime mover of the vehicle;
When the said boarding intention determination part determines that the said user does not have boarding intention, when the said motor | power_engine changes to a start permission state, the said condition determination part determines with the said disconnection diagnostic condition having been satisfied. Item 5. The transmitter diagnostic device according to any one of items 4 to 6. A lid state acquisition unit that acquires an open / closed state of a lid that protects a gas filling port for filling the tank with the fuel gas;
The said condition determination part determines that the said disconnection diagnosis condition is satisfied when the said boarding intention determination part determines that the said user does not have a boarding intention when the said lid changes to an open state. The transmitter diagnostic apparatus according to any one of 5.   The transmitter diagnostic apparatus according to any one of claims 1 to 6, wherein the fuel gas is hydrogen.

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