JP2005153586A - On-vehicle information transmitting device, fuel replenishing stand and fuel replenishing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably replenish fuel without arranging a means for detecting a residual quantity of a fuel tank of a vehicle in a fuel replenishing stand. <P>SOLUTION: A residual quantity detecting part 14 informs a processing part 16 of a detecting result as residual quantity information by detecting the residual quantity of a hydrogen tank 11 at a predetermined time interval. The processing part 16 transmits the received residual quantity information to the fuel replenishing stand 2 via a communication part 18. A control part 22 in the fuel replenishing stand 2 controls fuel replenishment on the basis of the residual quantity information by controlling a hydrogen replenishing device 23 on the basis of this residual quantity information when receiving the residual quantity information. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fuel supply system for supplying fuel to a vehicle.

With the recent increase in awareness of environmental problems, hydrogen fueled vehicles using hydrogen, which is clean energy, are being developed in place of fossil fuels that generate harmful combustion gases. In such a hydrogen fuel vehicle, hydrogen as fuel is stored in a fuel tank in a liquid state and used. Since this liquid hydrogen is a cryogenic fluid of about −253 ° C., an apparatus having a heat insulating structure or other special structure is used for storage.
In particular, when refueling, in addition to the heat insulating structure, it is necessary to prevent intrusion of moisture in the atmosphere.
For example, Japanese Patent Application Laid-Open No. 2003-113973 (Patent Document 1) includes a connection between the supply ports of the vehicle and the fuel supply stand at the time of fuel supply. There has been disclosed a technique for preventing intrusion of moisture and foreign matters in the atmosphere at the time of refueling by adopting a mating structure and further providing a ball valve at this connecting portion.
JP 2003-113973 A (paragraphs [0017] to [0022] and FIG. 1)

By the way, when refueling a fuel tank provided in a vehicle, it is common to monitor the remaining amount of fuel in the tank at a fuel replenishment stand and control the replenishment amount so that excessive fuel replenishment does not occur. .
For example, when replenishing gasoline, the refueling stand's refueling nozzle is inserted into the fuel tank, and when the refueling nozzle touches the liquid level of the gasoline, replenishment is stopped to prevent oversupply. doing.
However, in the hydrogen fuel vehicle, as disclosed in the above-mentioned Patent Document 1, the connecting portion between the vehicle and the fuel supply stand at the time of fuel supply has a special structure. It cannot be applied.
Therefore, realization of a fuel replenishment system for refueling according to the remaining amount is expected by a new method.

  The present invention has been made to solve the above-described problem, and it is possible to reliably perform fuel supply according to the remaining amount without providing a means for detecting the remaining amount of the fuel tank of the vehicle in the fuel supply stand. It is an object to provide an in-vehicle information transmission device, a fuel supply stand, and a fuel supply system.

  In order to solve the above problems, the present invention employs the following means.

  The in-vehicle information transmission device according to the present invention acquires remaining amount information from a communication unit that communicates with a fuel supply station that supplies fuel, and a remaining amount detection unit that detects a remaining amount of fuel in a fuel tank provided in the vehicle, And processing means for transmission from the means.

According to the present invention, the remaining amount of fuel in the fuel tank is transmitted as remaining amount information to the refueling stand, so that the refueling stand can obtain accurate remaining amount information of fuel very easily.
In addition, it is preferable that the timing at which the communication unit transmits information to the fuel supply station is always performed (in practice, every time detection is performed by the remaining amount detection unit). This is because more detailed fuel supply control can be realized by transmitting information on the remaining amount in the fuel tank to the fuel supply station in real time.
In addition to the above timing, for example, a stepwise threshold (for example, the maximum capacity that the fuel tank can secure, or 60%, 70%, 80%, 90%, 95%, etc. of the capacity considered to be full) is set. It may be set in advance and the remaining amount information may be transmitted when the remaining amount reaches a threshold value.

  Further, the processing means acquires pressure information from a pressure detection means for detecting the pressure of the fuel tank, acquires temperature information from a temperature detection means for detecting the temperature of the fuel tank, the pressure information and the temperature Information is transmitted from the communication means.

The fuel tank pressure information and temperature information are information required when the remaining amount detecting means calculates the remaining amount of fuel. In the present invention, the remaining amount information detected by the remaining amount detecting means is transmitted to the fuel supply stand. However, when the remaining amount detecting means itself has a problem (for example, pressure information, temperature information, a predetermined arithmetic expression, In the case where the remaining amount is calculated based on the above, if there is a problem that the calculation is not performed accurately), the remaining amount information to be transmitted is incorrect information. In this case, since it is not possible to determine whether or not the remaining amount information is correct at the fuel supply station, fuel supply based on the incorrect remaining amount information is performed, which is not preferable.
In order to avoid refueling based on such erroneous remaining amount information, the processing means transmits pressure information and temperature information to the refueling stand as materials for determining the reliability of the remaining amount information.

  Further, the processing means acquires defect information from a defect detection means for detecting a defect of the vehicle, and transmits the defect information from the communication means.

  If the vehicle has a problem, it is necessary to prohibit refueling or stop it quickly. In order to prohibit or promptly stop fuel supply in such an abnormality, the processing means transmits failure information to the fuel supply station.

  The communication unit and the processing unit are mounted on an IC tag.

The IC tag is a well-known technology that realizes contactless communication with a very small size. Further, since the IC tag is weak electricity, the communication range can be limited.
Therefore, by mounting the communication unit and the processing unit on the IC tag, it is possible to transmit information only to the fuel supply station that receives the fuel supply by a simple configuration and method.
The IC tag is preferably provided around the fuel supply port of the fuel tank, for example. Information can be reliably transmitted by providing an IC tag in a place where the distance from the fuel supply stand is close when replenishing.

The in-vehicle information transmission device of the present invention is preferably applied to a vehicle that drives a cryogenic liquid or the like that requires careful handling as a fuel, for example, a hydrogen fuel vehicle.
That is, in a vehicle using a cryogenic liquid as a fuel, such as a hydrogen fuel vehicle, the fuel tank itself and the structure of a replenishing port for receiving fuel replenishment have complicated structures. The amount cannot be detected. By applying the present invention to such a vehicle, stable fuel supply can be realized very easily.

  The refueling station of the present invention is a refueling station for refueling a fuel tank provided in a vehicle, the communication means for communicating with the in-vehicle information transmission device, and the fuel received from the in-vehicle information transmission device. Fuel supply control means for controlling fuel supply based on the remaining amount information.

  According to the present invention, since the communication means for receiving the remaining amount information transmitted from the in-vehicle information transmission device is provided, accurate remaining amount information can be acquired. The fuel supply control means realizes fuel supply based on the accurate remaining amount information received from the vehicle side.

  Further, the fuel replenishment control means adjusts the flow rate of the supplemental fuel according to the remaining amount information.

For example, when the remaining amount information received from the in-vehicle information transmission device is larger than the desired remaining amount, the fuel replenishment control unit performs fine adjustment by reducing the flow rate so as not to oversupply, and the remaining amount information Is less than the desired remaining amount, the flow rate is increased and the remaining amount is increased as soon as possible.
According to the present invention, since the flow rate of the supplementary fuel is adjusted according to the remaining amount information, efficient and highly accurate fuel supply can be realized.

  The fuel supply control means determines the reliability of the remaining amount information based on the temperature information and the pressure information received from the in-vehicle information transmission device, and prohibits or stops fuel supply according to the determination result. It is characterized by.

In the present invention, the remaining amount of the fuel tank is received from the in-vehicle information transmission device. However, if a failure or the like occurs in the remaining amount detecting means provided in the vehicle, the received remaining amount information becomes incorrect information. In this case, if there is no way to determine the reliability of the remaining amount information, fuel supply based on incorrect remaining amount information is performed, which is not preferable. Therefore, the temperature information and pressure information, which are elements necessary for detecting the remaining amount of fuel, are received from the in-vehicle information transmission device, and the reliability of the remaining amount information is judged based on both of these information. Avoid refueling based on remaining capacity information.
The determination of reliability is performed by, for example, calculating the remaining amount using pressure information, temperature information, and a pre-stored arithmetic expression, comparing the calculation result with the received remaining amount information, and receiving the remaining amount. For example, the method may be performed depending on whether the information is within a predetermined error range.

  The fuel supply control means prohibits or stops fuel supply when the communication means receives failure information.

  If the vehicle has a problem, it is necessary to prohibit refueling or stop it quickly. In the present invention, since the vehicle malfunction information is received from the in-vehicle information transmission device, the vehicle malfunction can be easily and quickly confirmed, and fuel replenishment at the time of abnormality can be prohibited or promptly stopped.

  A fuel supply system may be realized by the vehicle including the on-vehicle information transmission device according to claim 1 and the fuel supply stand according to claim 5.

The present invention has the following effects.
According to the present invention, the in-vehicle information transmission device transmits the remaining fuel amount in the fuel tank as remaining amount information to the refueling station, so that the refueling station can obtain accurate remaining fuel amount information very easily. Can do. Thereby, it is possible to easily realize fuel supply based on accurate remaining amount information received from the vehicle without providing a mechanism for detecting the remaining amount of fuel in the fuel supply stand.

Further, since the vehicle information transmission device transmits pressure information and temperature information, which are information necessary for detecting the remaining amount, to the refueling stand, the refueling stand stores the remaining amount information based on the received pressure information and temperature information. Reliability can be judged. Thereby, fuel supply based on an erroneous remaining amount can be avoided, and accurate fuel supply can be realized.
Further, when it is determined that the remaining amount information is incorrect, that is, when the remaining amount information cannot be obtained from the temperature information and pressure information, the fuel supply is prohibited or stopped. Malfunctions based on erroneous remaining amount information can be avoided.

  In addition, since the in-vehicle information transmission device transmits defect information to the refueling station, the in-vehicle information transmission device can easily and quickly confirm vehicle defects, and prohibit or quickly stop fuel supply in the event of an abnormality. it can.

  Further, in the in-vehicle information transmission apparatus, by mounting the communication unit and the processing unit on the IC tag, information can be transmitted only to the fuel supply station that receives the fuel supply by a simple configuration and method. As a result, information leakage to other devices can be prevented, and smooth information transmission can be realized without disturbing information transmission / reception between other vehicles in close proximity and other fuel supply stations. . Further, by using the IC tag, space saving and cost reduction can be achieved.

  In addition, the fuel supply station adjusts the flow rate of the supplementary fuel based on the remaining amount information received from the in-vehicle information transmission device, so that highly efficient and highly accurate fuel supply can be realized.

An embodiment of a fuel supply system according to the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a fuel supply system according to the present invention.
As shown in FIG. 1, the fuel supply system according to the present embodiment includes an IC tag (vehicle information transmission device) 100 provided in the hydrogen fuel vehicle 1, and a fuel supply stand 2 that supplies hydrogen to the hydrogen fuel vehicle 1. Consists of.

In the hydrogen fuel automobile 1, reference numeral 11 denotes a hydrogen tank (fuel tank) in which hydrogen serving as fuel is stored. Reference numeral 12 denotes a pressure sensor (pressure detection means) for detecting the pressure of the hydrogen tank, and reference numeral 13 denotes a temperature sensor (temperature detection means) for detecting the temperature of the hydrogen tank. The pressure sensor 12 and the temperature sensor 13 always detect the pressure and temperature in the hydrogen tank, and output the detection results to the remaining amount detection unit 14 and the processing unit 16.
The remaining amount detecting unit (remaining amount detecting means) 14 receives the detection result of the pressure sensor 12 and the detection result of the temperature sensor 13, and is secured in the hydrogen tank 11 based on these information and a predetermined arithmetic expression. The amount of hydrogen (hereinafter referred to as “remaining amount”) is detected, and the detection result is output to the processing unit 16. In this remaining amount detection method, there is a method of detecting based on map information held in advance, in addition to a method using an arithmetic expression, but these detection methods are not particularly limited.
Reference numeral 15 denotes an element constituting the hydrogen-fueled automobile 1, for example, a vehicle control unit (problem detection means) that controls the engine, suspension, and the like. Detect and output defect information to the processing unit 16.
The processing unit (processing means) 16 includes a CPU (Central Processing Unit), a ROM (Read Only Memory) in which a program executed by the CPU is stored, a RAM (Random Access Memory) in which information is temporarily stored. ing. When the CPU receives information from the pressure sensor 12, the temperature sensor 13, the remaining amount detection unit 14, and the vehicle control unit 15, the CPU writes this information in the RAM, or when the previously received information has already been written. , Rewrite the information with the latest information. Moreover, the latest pressure information, temperature information, remaining amount information, and failure information are transmitted to the fuel supply stand 2 by reading out information from the RAM and outputting the information to the communication unit 18.
The communication unit (communication means) 18 transmits and receives information to and from the communication unit 21 included in the fuel supply stand 2. Specifically, the information received from the processing unit 16 is transmitted to the communication unit 21 of the refueling stand 2 by performing a predetermined modulation process or the like. Demodulate and output to the processing unit 16.
The processing unit 16 and the communication unit 18 constitute an IC tag 100. The IC tag 100 is very small and realizes non-contact communication. Since the IC tag 100 is a well-known technique, detailed description thereof is omitted.

In the refueling stand 2, when the communication unit (communication unit) 21 receives information from the communication unit 18 of the hydrogen fuel vehicle 1, the communication unit (communication unit) 21 performs predetermined processing such as demodulation, and the received information is transmitted to the control unit (fuel supply control unit). 22 to output.
The control unit 22 controls the amount of hydrogen to be supplied to the hydrogen fuel vehicle 1 by controlling the hydrogen supply device 23 based on the received various information. A specific operation will be described later.
The hydrogen replenishing device 23 is for supplying liquid hydrogen stored in the hydrogen storage tank 24 to the hydrogen tank 11 through the hydrogen replenishing port 25. Specifically, in order to distribute liquid hydrogen reliably. In addition, it is composed of piping having a special structure, an accumulator, a motor valve for adjusting the flow rate, a shut-off valve or other protective device that operates when an abnormality occurs, and a shut-off material.
The hydrogen replenishing port 25 is for fitting with the replenishing port 19 of the hydrogen tank 11 of the hydrogen-fueled vehicle 1 when hydrogen is replenished, so that hydrogen is reliably charged into the hydrogen tank. The hydrogen supply port 25 has a special structure that prevents dust and moisture in the atmosphere from entering the hydrogen tank 11 when supplying hydrogen.
Similarly, the replenishing port 19 provided in the hydrogen tank 11 has a special structure in order to prevent entry of dust and the like.
Reference numeral 26 denotes a display unit, which functions as information notifying means to the driver or the like by displaying prohibition or stop of fuel supply, or termination.

FIG. 2 is a diagram showing the installation location of the IC tag 100. In this figure, the same components as those in FIG. 1 are denoted by the same reference numerals.
As shown in FIG. 2, the IC tag 100 is installed on the wall surface of the hydrogen tank 11 around the supply port 19, while the communication unit 21 of the fuel supply stand 2 is also installed around the hydrogen supply port 25. Thus, by providing the IC tag 100 at a location where the distance from the hydrogen supply port 25 is close when refueling, information can be reliably transmitted even with low power.

Next, the operation of the above-described fuel supply system will be described.
First, not only at the time of refueling, the pressure sensor 12, the temperature sensor 13, and the remaining amount detecting unit 14 detect the pressure, temperature, and remaining amount at all times (actually, at a predetermined time interval), respectively. The detection result is output to the unit 16. The processing unit 16 updates information in the built-in RAM every time new information is acquired.
On the other hand, the vehicle control unit 15 outputs a signal indicating that a failure has occurred to the processing unit 16 when a failure is detected in the vehicle. For example, when a failure signal is received, the processing unit 16 holds information indicating that a failure has occurred by performing processing such as setting a flag to “1”.

Subsequently, when refueling, when the replenishing port 19 of the hydrogen tank 11 and the hydrogen replenishing port 25 of the fuel replenishment stand 2 are securely fitted, a fitting signal is output from the replenishing port 19 to the processing unit 16. The
When receiving the fitting signal, the CPU of the processing unit 16 receives various information stored in the RAM, that is, pressure information, temperature information, and remaining amount information, and if a failure occurs, the failure information. Is output to the communication unit 18. Accordingly, these pieces of information are transmitted to the fuel supply station 2 via the communication unit 18.
In the fuel supply stand 2, when the communication unit 21 receives these pieces of information, the information is output to the control unit 22. Thereby, the control part 22 performs the process shown in FIG. In the following description, the case of refueling up to the maximum hydrogen capacity that the hydrogen tank 11 can secure, that is, full tank will be described.

First, it is determined whether or not a failure has occurred in the hydrogen fuel vehicle 1 by confirming whether or not the received information includes failure information (step S1 in FIG. 3). As a result, if a malfunction has occurred, replenishment is prohibited (step S2), and information indicating that replenishment is prohibited and the reason thereof are displayed on the display unit 26 (step S3). As a result, it is possible to notify the driver of the hydrogen fuel vehicle 1 that fuel supply is prohibited due to a vehicle malfunction.
On the other hand, if no malfunction has occurred, the reliability of the received remaining amount information is confirmed based on the received pressure information and temperature information (step S4).
Specifically, the remaining amount is calculated by pressure information, temperature information, and a previously stored arithmetic expression. This calculation formula is the same as that provided in the remaining amount detection unit 14 of the hydrogen fuel vehicle 2. Then, the calculated remaining amount is compared with the received remaining amount information to determine whether the received remaining amount information indicates an appropriate value, and the reliability is confirmed. For example, the reliability of the remaining amount information is confirmed based on whether or not the received remaining amount information is within a predetermined error range.
As a result, if the received remaining amount information is outside the predetermined error range of the calculation result, it is determined that the remaining information is incorrect, fuel supply is prohibited (step S2), and replenishment to the display unit 26 (not shown) is performed. The information indicating that the user is prohibited and the reason are displayed (step S3). Thereby, refueling based on incorrect remaining amount information can be avoided.

On the other hand, if it is determined that the received remaining amount information falls within a predetermined error range of the calculated remaining amount and is reliable information, the fuel supply is performed based on the received remaining amount information.
Specifically, it is determined whether the received remaining amount information is less than a threshold value (for example, 90% of the capacity when it is considered full) (step S5). As a result, when the remaining amount information is less than the threshold value, the hydrogen replenishing device 23 is controlled so that the flow rate of hydrogen becomes maximum, and hydrogen is replenished (step S6).
On the other hand, if the received remaining amount information is greater than or equal to the threshold value, it is determined whether or not the remaining amount matches the maximum capacity (step S7). As a result, if the maximum capacity has not been reached, fuel supply with a reduced flow rate is performed so as not to oversupply (step S8). The flow rate can be adjusted, for example, by adjusting the opening of a solenoid valve or the like provided in the pipe.
In this way, by performing fuel supply based on the remaining amount information, when it is determined that the remaining amount gradually increases and the remaining amount information matches the maximum capacity ("YES" in step S7), refueling is performed. By controlling the hydrogen supply device 23 so as to stop the fuel supply, the fuel supply is finished (step S9), and further, the display unit 26 displays that the fuel supply is finished (step S10).

Upon confirming this display, the driver or the like removes the hydrogen supply port 25 from the supply port 19. As a result, the supply port 19 notifies the processing unit 16 of a signal indicating that it has been removed. When receiving the signal, the processing unit 16 stops outputting information to the communication unit 18. Thereby, communication with a vehicle-mounted information transmission apparatus and the fuel supply stand 2 can be complete | finished.
Even when a failure is detected by the vehicle control unit 15 during refueling, the processing unit 16 transmits failure information to the refueling stand 2 via the communication unit 18. As a result, when the failure information is received via the communication unit 21, the control unit 22 controls the hydrogen supply device 23 to stop the fuel supply, and displays the fact of the stop and the reason on the display unit 26.
As a result, it is possible to quickly cope with the occurrence of problems during refueling.

As mentioned above, according to this embodiment, there exist the following effects.
Since the remaining amount of fuel in the hydrogen tank 11 is transmitted to the refueling stand 2 as remaining amount information, the refueling stand 2 can acquire accurate remaining amount information of the fuel very easily.
Accordingly, it is possible to easily realize fuel supply based on the accurate remaining amount information received from the IC tag 100 without providing a mechanism for detecting the remaining amount of fuel in the fuel supply stand 2.

In addition, since the information is transmitted to the fuel supply stand 2 by the IC tag 100, the information can be reliably transmitted with low power, and space saving and cost reduction can be achieved. In addition, by adopting the IC tag 100 as a means for transmitting information, it is possible to prevent information leakage to other devices and to prevent information from being sent and received between other vehicles in close proximity and other fuel supply stations. Smooth information transmission can be realized without fear. Further, by using the IC tag, space saving and cost reduction can be achieved.
Furthermore, by providing the IC tag 100 around the replenishment port 19 of the hydrogen tank 11, information can be transmitted reliably.

  Further, the control unit 22 of the refueling stand 2 compares the remaining amount information received from the IC tag 100 with a threshold value, and if the remaining amount information is equal to or greater than the threshold value, the flow rate is reduced to prevent oversupply. If the remaining amount information is less than the threshold value, the flow rate is maximized and the remaining amount is increased as soon as possible. can do.

  In addition, since the control unit 22 receives pressure information and temperature information, which are information necessary for detecting the remaining amount, and determines the reliability of the remaining amount information based on this information, refueling based on an erroneous remaining amount is avoided. It is possible to refuel accurately. Also, if it is determined that the remaining amount information is incorrect, that is, if the remaining amount information cannot be obtained from the temperature information and pressure information, the fuel supply is prohibited or stopped, and malfunction occurs. Can be avoided.

  Moreover, the control part 22 can prohibit or stop fuel replenishment, when malfunction information is received.

Although the case of performing non-contact communication by adopting the IC tag 100 has been described, the present invention is not limited to this example, and communication may be performed by contact, or may be performed by wire or wireless. good.
In the above embodiment, the case where the processing unit 16 controls the start and end of communication of the communication unit 18 has been described. However, the present invention is not limited to this, and the communication unit 18 always transmits radio waves. A configuration may be adopted in which communication is established when the communication unit 21 of the fuel supply station 2 receives this radio wave.
In addition, the communication unit 18 has described the case of transmitting information to the fuel supply stand 2 at all times (actually, every time detection is performed by the remaining amount detecting means). 60%, 70%, 80%, 90%, 95%, etc.) may be set in advance, and the remaining amount information may be transmitted when the remaining amount reaches a threshold value. Note that the threshold value at this time may coincide with the threshold value that is referred to for flow rate adjustment performed by the control unit 22.
In the above-described embodiment, the reliability determination of the remaining amount information based on the pressure information and the temperature information is performed only once. However, the IC tag 100 always transmits the pressure information and the temperature information together with the remaining amount information. In this case, the control unit 22 may check the reliability of the remaining amount information every time it is received.
The fuel supply station 2 detects the remaining amount based on the pressure information and temperature information received from the IC tag 100 and a predetermined function formula. The detection method itself may be different. In this case, by transmitting information necessary for detecting the remaining amount together with the remaining amount information from the vehicle side to the refueling stand, the remaining amount detection based on pressure information, temperature information, etc. also at the refueling stand 2 Be able to.

In the above-described embodiment, the case where fuel supply is performed up to the maximum capacity that the hydrogen tank 11 can hold has been described. However, in the present invention, the fuel supply stand 2 can know the remaining amount of the hydrogen tank 11 in real time. Therefore, for example, the remaining amount information of the hydrogen tank 11 can be obtained by transmitting to the fuel supply stand 2 information indicating the desired remaining amount from the IC tag 100 at the start of replenishment. When the fuel reaches the desired remaining amount, it is possible to perform control to end the fuel supply. In addition, as a threshold value used for controlling the flow rate adjustment at this time, a predetermined ratio with respect to the desired remaining amount may be used.
In the flow rate control performed by the control unit 22, one threshold is provided and the flow rate is adjusted depending on whether or not the threshold is exceeded. However, the present invention is not limited to this, and the threshold is set finely for each threshold. The flow rate may be determined in advance. By setting a plurality of threshold values in this way, fine adjustment of the flow rate becomes possible, and fuel replenishment with higher accuracy can be realized. Further, the threshold value may be set at a ratio according to a desired remaining amount.
Also, one threshold value is set as in the above embodiment, and when this threshold value is exceeded, the flow rate adjusting valve is closed at a certain rate, thereby finely adjusting the flow rate according to the remaining amount information. You may make it do.

It is the block diagram which showed the structure at the time of applying the fuel supply system of this invention to the hydrogen fuel supply system which handles hydrogen as a fuel. It is the figure shown about the installation place of the IC tag. It is the flowchart shown about the process which the control part with which the fuel supply stand 2 is provided performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hydrogen fuel vehicle 2 Fuel supply stand 11 Hydrogen tank 12 Pressure sensor 13 Temperature sensor 14 Remaining amount detection part 15 Vehicle control part 16 Processing part 18 Communication part 19 Supply port 21 Communication part 22 Control part 23 Hydrogen supply apparatus 24 Hydrogen storage tank 25 Hydrogen supply port 26 Display unit 100 IC tag

Claims (10)

Communication means for communicating with a refueling station for refueling;
An in-vehicle information transmission device comprising: processing means for acquiring remaining amount information from a remaining amount detecting means for detecting a remaining amount of fuel in a fuel tank provided in the vehicle, and transmitting the remaining amount information from the communication means. .   The processing means acquires pressure information from a pressure detection means for detecting the pressure of the fuel tank, acquires temperature information from a temperature detection means for detecting the temperature of the fuel tank, and obtains the pressure information and the temperature information. The in-vehicle information transmission apparatus according to claim 1, wherein transmission is performed from the communication unit.   The in-vehicle information transmission apparatus according to claim 1, wherein the processing unit acquires defect information from a defect detection unit that detects a vehicle defect, and causes the communication unit to transmit the defect information. .   The in-vehicle information transmission apparatus according to any one of claims 1 to 3, wherein the communication unit and the processing unit are mounted on an IC tag.   A vehicle comprising the on-vehicle information transmission device according to any one of claims 1 to 4. A refueling stand for refueling a fuel tank provided in a vehicle,
A communication means for communicating with the in-vehicle information transmission device;
A fuel replenishment stand comprising: a fuel replenishment control unit that controls fuel replenishment based on fuel remaining amount information received from the in-vehicle information transmission device.   7. The fuel supply stand according to claim 6, wherein the fuel supply control means adjusts the flow rate of the supplied fuel according to the remaining amount information.   The fuel supply control means determines the reliability of the remaining amount information based on the pressure information and temperature information of the fuel tank received from the in-vehicle information transmission device, and prohibits fuel supply according to the determination result. The fuel supply stand according to claim 6 or 7, wherein the fuel supply stand is stopped.   The fuel according to any one of claims 6 to 8, wherein the fuel replenishment control means prohibits or stops fuel replenishment when failure information is received from the in-vehicle information transmission device. Supply stand. A refueling system comprising: the in-vehicle information transmission device according to claim 1; and the refueling stand according to claim 5.

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