JP2009046127A - Fuel supplying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent fuel from overflowing a fuel supplying opening by detecting a distance between a liquid supplying nozzle and the fuel supplying opening. <P>SOLUTION: A wireless tag is fixed above the liquid supplying opening 102. When the liquid supplying nozzle 30 is inserted into the liquid supplying opening 102, an information reading unit 90 provided on the liquid supplying nozzle 30 reads data transmitted from the wireless tag, and transmits the read data to a metering machine side, and in addition, receives displaying data including the rate of flow measured on the metering machine side. When a wireless tag reader of the information reading unit 90 can not read the information from the wireless tag, the controlling circuit of the metering machine 24 judges that the liquid supplying nozzle 30 is pulled out of the liquid supplying opening 102, and inhibits to supply the fuel. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fuel supply machine, and more particularly to a fuel supply machine configured to supply fuel by inserting a nozzle into a fuel supply port of a vehicle.

For example, as a fuel supply machine for supplying fuel such as gasoline and light oil, there is a fuel supply machine as shown in Patent Document 1 previously proposed by the present applicant. In this fuel supply machine, a fuel is discharged from the nozzle when fuel is supplied to the fuel tank of the vehicle by mounting a reader on the nozzle that reads information transmitted from a transponder provided in the vicinity of the fuel supply port. When the type of the fuel and the type of fuel stored in the fuel tank match, fuel supply by the nozzle is started.
Japanese Patent No. 2903003

  In a conventional fuel supply machine, when fuel is supplied until the nozzle is fully inserted by inserting the nozzle into the fuel supply port, it is supplied at a large flow rate until the automatic valve closing mechanism based on the liquid level detection of the nozzle is activated, and then automatically closed. When performing additional refueling after the valve, the nozzle lever should be operated at a small flow rate with the nozzle shifted in the direction of pulling out from the fuel supply port so that the nozzle tip is raised above the liquid level detection position. Become.

  However, when fuel is supplied at a small flow rate, even if the liquid level is detected, the negative pressure generation in the automatic valve closing mechanism is weakened. When fuel was supplied, there was a problem that fuel overflowed from the fuel supply port.

  In particular, in a self-service fuel supply machine, a driver who is not familiar with the operation may operate, so when performing additional refueling operation after automatic valve closing by the first liquid level detection, pull the nozzle from the fuel supply port. There were cases where the fuel flow was overflowed from the fuel supply port when the numerical value displayed on the flow rate indicator was seen while the fuel was supplied at a small flow rate while shifting in the direction of removal.

  Therefore, in view of the above circumstances, an object of the present invention is to provide a fuel supply machine that solves the above-described problems.

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

  The present invention provides a fuel supply machine having a fuel supply path for supplying fuel, and a nozzle for supplying fuel to a fuel supply port of a fuel supply body through the fuel supply path. Distance detecting means for detecting whether or not the distance between the fuel supply port of the supply body is within a predetermined distance, and the fuel supply path when the distance detected by the distance detecting means exceeds a predetermined distance By providing the fuel supply prohibiting means for prohibiting the fuel supply according to the above, the above problem is solved.

  The present invention is the fuel supply machine according to claim 1, wherein the distance detection means is provided in the vicinity of a fuel supply port of the fuel supply body, and stores information on the fuel supply body as supply body information. The above-mentioned problem is achieved by including a supply body information storage section that is provided, and an information reader that is provided in the nozzle and reads the content stored in the supply body information storage section from the supply body information storage section in a non-contact manner. It is a solution.

  The present invention is the fuel supply machine according to claim 2, wherein the receivable maximum distance of the information reader is the information reader and the tip of the nozzle when the nozzle contacts the fuel supply port. The above-mentioned problem is solved by setting the distance below the distance.

  The present invention is the fuel supply machine according to claim 2 or 3, wherein the supplier information storage unit is a transponder, and the information reader reads vehicle information transmitted from the transponder, The present invention solves the above problems.

  The present invention is the fuel supply apparatus according to any one of claims 2 to 4, wherein the supply body information stored in the supply body information storage unit includes at least a type of fuel to be supplied to the supply body. The fuel supply unit supplies fuel through the fuel supply path when the type of fuel to be supplied to the supply body read by the information reader matches the type of fuel supplied from the nozzle. By solving this problem, the above-mentioned problems are solved.

  The present invention is the fuel supply device according to any one of claims 2 to 5, wherein the receivable maximum when the information reader cannot read the supply information stored in the supply information storage unit. By providing a receivable distance changing means for changing the distance to the distance from the information reader to the tip of the nozzle, the above problem is solved.

  The present invention is the fuel supply apparatus according to any one of claims 2 to 6, wherein the information reader cannot read the supply body information stored in the supply body information storage unit, and then, again, When the information reader can read the supply information stored in the supply information storage unit, the supply information read at the start of fuel supply does not match the supply information read again The present invention solves the above problem by stopping the fuel supply through the fuel supply path.

  According to the present invention, when the distance between the nozzle and the fuel supply port of the fuel supply body exceeds a predetermined distance, fuel supply through the fuel supply path is prohibited. It is possible to prevent the fuel from being overflowed from the fuel supply port by preventing the additional refueling operation.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing an embodiment of a fuel supply apparatus according to the present invention. As shown in FIG. 1, the fuel supply system 10 includes a fuel supply device 16 installed in the liquid supply area 12 and a management computer 20 installed in the office 18. The management computer 20 manages each device installed in the liquid supply station, and when the liquid supply request signal is output from the fuel supply device 16, the person in charge does not have an abnormal state around the fuel supply device 16. The permission signal is transmitted to the fuel supply apparatus 16 by operating a permission button for outputting the liquid supply permission after confirming the above.

  The management computer 20 and the control circuit mounted on the fuel supply device 16 are connected via the SS-LAN 22 so as to be capable of bidirectional communication.

  The fuel supply device 16 includes a self-service liquid supply type measuring machine 24, a setting device 26 mounted on the measuring machine 24, and a display device 27 that displays an oil type unit price and a liquid supply amount. The weighing machine 24 is provided with a setting device 26 on the front and back of the weighing machine main body 28, and each oil type (in this embodiment, for example, three types of oils such as light oil, high-octane gasoline, and regular gasoline). ) A nozzle hook 32 for holding each liquid supply nozzle 30 is provided.

  As will be described later, the liquid supply nozzle 30 is provided with an information reading unit 90 that reads data (vehicle information including oil type information) transmitted from a wireless tag (see FIG. 3) provided on the vehicle side. The information reading unit 90 can receive the transmission data in a non-contact manner, but can read the transmission data when the distance from the wireless tag serving as the transmission source falls below a predetermined distance (maximum receivable distance). . Therefore, in this embodiment, the information reading unit 90 is used as a distance detecting unit, and the distance between the liquid supply nozzle 30 and the vehicle-side wireless tag is detected using the receivable distance of the information reading unit 90.

  In addition, the weighing machine main body 28 transmits information related to liquid supply such as flow rate and oil type to the information reading unit 90, or wireless transmission / reception received when wireless tag information read by the information reading unit 90 is transmitted wirelessly. A machine 92 is provided. The wireless transmitter / receiver 92 performs wireless communication using a communication method called narrow-range communication, DSRC (Dedicated Short Range Communication), or weak wireless, and prevents interference with other measuring devices.

  In addition, a liquid supply hose 34 to which fuel is supplied is connected to each liquid supply nozzle 30, and the liquid supply hose 34 is suspended from a hose support portion 35 provided at the upper part of the weighing machine main body 28. .

  Each liquid supply hose 34 communicates with a liquid supply line (fuel supply path) arranged inside the measuring machine main body 28, and each liquid supply line includes a device such as a flow meter, a solenoid valve, and a liquid supply pump. Is provided.

  FIG. 2 is a diagram showing a state in which liquid is supplied to the vehicle. As shown in FIG. 2, a liquid supply port (fuel supply port) 102 is provided on the side surface of the vehicle 100, and the liquid supply port 102 is exposed by opening the lid 104. The liquid supply port 102 can be supplied with liquid by removing the cap that closes the liquid supply port 102 from the liquid supply port 102.

  FIG. 3 is an enlarged view showing the liquid supply port 102. As shown in FIG. 3, a wireless tag (transponder) 110 as a supplier information storage unit is fixed above the liquid supply port 102. The wireless tag 110 includes an antenna that performs wireless communication and a semiconductor chip, and has a very small size. Therefore, the wireless tag 110 can be attached to any location. The wireless tag 110 according to the present embodiment includes data that includes an ID set for each vehicle or customer, and information on the type of fuel (for example, regular gasoline or light oil) used in an engine mounted on the vehicle. When the data request signal from the information reading unit 90 is received, the stored data is transmitted wirelessly.

  The supply body information stored in the wireless tag 110 has at least the type of fuel to be supplied to the fuel tank (supply body) of the vehicle, and the fuel supply device 16 reads the vehicle read by the information reading unit 90. When the type of fuel to be supplied to the fuel tank matches the type of fuel supplied from the liquid supply nozzle 30, fuel can be supplied through the fuel supply path of the fuel supply device 16.

  The attachment position of the wireless tag 110 is not limited to this position, and may be another place (for example, the side of the liquid supply port 102 or the back surface of the lid 104) as long as it is in the vicinity of the liquid supply port 102.

FIG. 4 is a side view of the liquid supply nozzle 30. As shown in FIG. 4, the liquid supply nozzle 30 includes a discharge pipe 30 a inserted into a liquid supply port on the vehicle side, a nozzle body 30 b having an automatic valve closing mechanism that automatically closes by liquid level detection, and a nozzle And an information reading unit 90 mounted on the upper portion of the main body 30b. The nozzle body 30b includes a grip portion 30c gripped by the operator on the front side of the information reading unit 90, and a nozzle lever 30d that is rotated below the grip portion 30c.
The information reading unit 90 reads the data transmitted from the wireless tag 110, transmits the read data to the weighing machine side, and receives display data including the flow rate measured on the weighing machine side. For this purpose, a planar antenna 142 (shown in FIGS. 5A and 5B) is connected to the information reading unit 90.

  When performing the liquid supply operation for discharging the fuel from the discharge pipe 30a, the operator holds the grip portion 30c and operates the nozzle lever 30d in the valve opening direction. At that time, the operator can view the information reading unit 90 arranged in front of the grip portion 30c and the liquid supply port into which the discharge pipe 30a is inserted while operating the nozzle lever 30d.

  5A and 5B are diagrams showing the information reading unit 90, where FIG. 5A is a plan view and FIG. 5B is a side view. As shown in FIGS. 5A and 5B, the information reading unit 90 includes a solar cell panel 94 and a display 96 made of a liquid crystal panel (LCD) on the upper surface of a resin case 91 formed in a box shape. A planar antenna 142 for receiving display data transmitted from the wireless transmitter 92 on the weighing machine side is provided. Further, the upper opening 91 a of the resin case 91 has a waterproof structure in which a protective glass 98 covering the upper surfaces of the solar cell panel 94 and the display 96 is fitted. Since the planar antenna 142 has a small and thin shape in which a conductive metal pattern as an antenna is formed on a substrate, the planar antenna 142 can be disposed inside the resin case 91. Of course, other types of antennas may be provided inside or outside the resin case 91 in place of the planar antenna 142.

  FIG. 6 is a block diagram schematically showing a schematic configuration of the information reading unit 90 and the weighing machine main body 28. As shown in FIG. 6, the control circuit 36 mounted on the weighing machine main body 28 manages each device of the weighing machine 24, and the liquid supply nozzle 30 is removed from the nozzle hook 32 and the nozzle hooking switch 50 is set. When turned off, the liquid supply pump 40 is activated and the electromagnetic valve 38 is opened. The operator inserts the liquid supply nozzle 30 removed from the nozzle hook 32 into the liquid supply port 102 of the vehicle 100 and then opens the nozzle lever of the liquid supply nozzle 30 to start the liquid supply by the liquid supply nozzle 30. . As a result, the control circuit 36 starts supplying liquid, integrates the flow rate pulses output from the flow meter 42, displays the integrated flow rate value on the display device 27, and supplies it via the wireless transmitter 92. The flow rate display data is transmitted so that the same integrated flow rate value is also displayed on the information reading unit 90 mounted on the liquid nozzle 30.

  The information reading unit 90 includes a small display 96, a control unit 130 including a microcomputer, a wireless receiver 140 that receives a wireless signal transmitted from the weighing machine 24, and a wireless that reads data transmitted from the wireless tag. It has a tag reader (information reader) 150 and a solar cell unit 160 as a power source. The solar cell unit 160 includes a solar cell panel 94 and a rechargeable battery 154 that stores a current generated from the solar cell panel 94. The display 96, the control unit 130, the wireless transceiver 140, and the wireless tag reader 150 of the information reading unit 90 operate using the rechargeable battery 164 as a power source. The maximum receivable distance of the wireless tag reader 150 is set to be equal to or less than the distance between the wireless tag reader 150 and the tip of the liquid supply nozzle 30 when the liquid supply nozzle 30 contacts the liquid supply port 102.

  FIG. 7A is a diagram illustrating a waveform of a reception voltage according to the distance between the wireless tag 110 and the wireless tag reader 150. FIG. 7B is a diagram showing the relationship between the reception sensitivity of the wireless tag reader 150 and the set value of the reception voltage threshold.

  As shown in FIG. 7B, since the reception sensitivity changes according to the distance between the wireless tag 110 and the wireless tag reader 150, the reception voltage threshold value corresponding to the distance is set to transmit the wireless tag 110. Data can be read by the wireless tag reader 150.

  As shown in FIG. 7A, according to waveform I, the received voltage when the distance between the wireless tag 110 and the wireless tag reader 150 is a short distance (for example, about 0 cm to 5 cm) is shown. Even if the reception voltage threshold value of the receiver 150 is set to the low level C, the data transmitted from the wireless tag 110 by the wireless tag reader 150 can be read. In this case, for example, the root of the discharge pipe 30 a of the liquid supply nozzle 30 is inserted into the liquid supply port 102 of the vehicle 100, and the information reading unit 90 is close to the wireless tag 110 fixed above the liquid supply port 102. State.

  7A shows the received voltage when the distance between the wireless tag 110 and the wireless tag reader 150 is a medium distance (for example, about 5 cm to 15 cm), and the received voltage of the wireless tag reader 150 is shown. Even if the threshold is set to the medium level B, the data transmitted from the wireless tag 110 can be read by the wireless tag reader 150. In this case, for example, the wireless tag 110 is inserted into the liquid supply port 102 of the vehicle 100 up to half the entire length of the discharge pipe 30a of the liquid supply nozzle 30 and the information reading unit 90 is fixed above the liquid supply port 102. Somewhat separated.

  7A shows the received voltage when the distance between the wireless tag 110 and the wireless tag reader 150 is a long distance (for example, about 15 cm to 20 cm), and the received voltage of the wireless tag reader 150 is shown. Even if the threshold is set to the medium level A, the data transmitted from the wireless tag 110 can be read by the wireless tag reader 150. In this case, for example, only the tip of the discharge pipe 30a of the liquid supply nozzle 30 is inserted into the liquid supply port 102 of the vehicle 100, and the information reading unit 90 is attached from the wireless tag 110 fixed above the liquid supply port 102. It is in a state of being farthest away within the receivable range. As described above, the wireless tag reader 150 can be used as a distance detection unit because the reception sensitivity has a correlation with the detectable distance.

  Here, the control process executed by the control circuit 36 will be described.

  FIG. 8 is a flowchart for explaining the control process 1 executed by the control circuit 36. As shown in FIG. 8, the control circuit 36 checks whether or not the liquid supply nozzle 30 has been removed from the nozzle hook 32 and the wireless tag 110 has been recognized in S11. When the nozzle hooking switch 50 is turned off in S11, it is determined that the liquid supply nozzle 30 has been removed from the nozzle hook 32, and when the wireless tag reader 150 reads the data transmitted from the wireless tag 110, the liquid supply nozzle It is determined that 30 is inserted into the liquid supply port 102 of the vehicle 100 and the wireless tag 110 can be recognized, and the process proceeds to S12.

  In S12, the management computer 20 is requested to permit liquid supply. When a liquid supply permission signal is input from the management computer 20 in the next S13, the process proceeds to S14, where the liquid supply pump 40 of the weighing machine 24 is started, the electromagnetic valve 38 is opened, and fuel (oil oil) is supplied to the liquid supply nozzle 30. Liquid).

  In next S15, it is checked again whether or not the wireless tag can be recognized (distance detection means). In step S15, when the wireless tag reader 150 reads the data transmitted from the wireless tag 110, the wireless tag 110 can be recognized. Therefore, the wireless tag reader 150 determines that the data can be read from the wireless tag 110. Proceed to S16. In S16, the liquid supply ready state in which the electromagnetic valve 38 is opened is maintained.

  In the next S17, it is checked whether or not the liquid supply nozzle 30 has been returned to the nozzle hook 32. When the nozzle hook switch 50 is off, it is determined that liquid supply is being performed, and the process proceeds to S15. Return. In S17, when the nozzle hooking switch 50 is turned on, it is determined that the liquid supply is completed and the liquid supply nozzle 30 is returned to the nozzle hook 32, and the process proceeds to S18, where the electromagnetic valve 38 is closed. Then, it progresses to S21 mentioned later.

  In S15, when the wireless tag reader 150 cannot read the data transmitted from the wireless tag 110, it is determined that the wireless tag reader 150 is at a distance where data cannot be read from the wireless tag 110, and is added. In order to supply liquid, it is determined that the liquid supply nozzle 30 is separated from the liquid supply port 102 and the wireless tag 110 cannot be recognized, and the process proceeds to S19. Accordingly, when the wireless tag reader 150 is moved out of the data readable range from the wireless tag 110 while the liquid supply nozzle 30 is supplying liquid, the discharge pipe 30a of the liquid supply nozzle 30 is pulled out from the liquid supply port 102. It can be determined that additional liquid supply is performed.

  In S19, the additional liquid supply can be prohibited by closing the solenoid valve 38 and stopping the fuel supply to the liquid supply nozzle 30 (fuel supply prohibiting means). For this reason, the liquid supply nozzle 30 cannot be supplied with the liquid drawn out from the liquid supply port 102, so that the fuel overflows from the liquid supply port 102 due to the additional liquid supply or the fuel is sprinkled on the ground or the like. Can be prevented.

  In the next S20, it is checked whether or not the liquid supply nozzle 30 has been returned to the nozzle hook 32. When the nozzle hook switch 50 is off, it is determined that liquid supply is being performed, and the process proceeds to S15. Return. If the nozzle hooking switch 50 is turned on in S18, it is determined that the liquid supply is finished and the liquid supply nozzle 30 is returned to the nozzle hook 32, and the process proceeds to S21. In S21, the liquid supply pump 40 is stopped to end the current liquid supply process.

  9A and 9B are flowcharts for explaining the control process 2 executed by the control circuit 36. FIG. As shown in FIG. 9A, the control circuit 36 checks whether or not the liquid supply nozzle 30 has been removed from the nozzle hook 32 in S31. If the nozzle hooking switch 50 is turned off in S31, it is determined that the liquid supply nozzle 30 has been removed from the nozzle hooking 32, and the process proceeds to S32.

  In S32, the reception sensitivity (reception voltage threshold) of the RFID tag reader 150 is set to a medium level (see FIGS. 7A and 7B). Then, it progresses to S33 and it is checked whether the wireless tag 110 was recognized. In S33, when the wireless tag reader 150 reads the data transmitted from the wireless tag 110, it is determined that the liquid supply nozzle 30 has been inserted into the liquid supply port 102 of the vehicle 100 and the wireless tag 110 has been recognized. Proceed to In S34, the management computer 20 is requested to permit liquid supply.

  In S33, when the wireless tag reader 150 cannot read the data transmitted from the wireless tag 110, it is determined that the distance between the wireless tag 110 and the wireless tag reader 150 is long, and S35. Proceed to In S35, it is checked whether or not a predetermined time (for example, about 5 seconds) has elapsed. If the predetermined time has not elapsed, the process returns to S33 and the wireless tag reader 150 transmits from the wireless tag 110. It is confirmed whether or not the read data can be read. Therefore, if the liquid supply nozzle 30 is reinserted into the liquid supply port 102 within a predetermined time, the data transmitted from the wireless tag 110 can be read in S33, and the process proceeds to S34 to supply the management computer 20 with the data. Request liquid permission.

  However, if the predetermined time has elapsed in S35, the process proceeds to S36, and the reception sensitivity (reception voltage threshold) of the RFID tag reader 150 is set to a high level (see FIGS. 7A and 7B) (receivable distance changing means). ). Thus, in S36, when the wireless tag reader 150 cannot read the data transmitted from the wireless tag 110, the maximum receivable distance of the wireless tag reader 150 is determined from the wireless tag reader 150 to the liquid supply nozzle 39. Change the distance to the tip near (high reception sensitivity level).

  In particular, since the pipe shape of the liquid supply port 102 varies depending on the manufacturer and type of the vehicle 100, the insertion position of the liquid supply nozzle 30 is not uniform. When the customer inserts the liquid supply nozzle 30 into the liquid supply port 102 of the vehicle 100, the discharge pipe 30a may not be sufficiently inserted.

  The wireless tag 110 is recognized according to the insertion length of the discharge pipe 30a by switching the reception sensitivity (reception voltage threshold) of the wireless tag reader 150 to a high level (see FIGS. 7A and 7B) as in this embodiment. It becomes possible to do. That is, regardless of the manufacturer and type of the vehicle 100, when the additional liquid is supplied, the wireless tag 110 can be recognized to supply the liquid.

  Then, it progresses to S37 and it is checked whether the wireless tag 110 was recognized. When the wireless tag reader 150 can read the data transmitted from the wireless tag 110 in S37, the process proceeds to S34, and the management computer 20 is requested to permit liquid supply.

  In the next S38, it is checked whether or not a liquid supply permission signal is input from the management computer 20. In S38, when a liquid supply permission signal is input from the management computer 20, the process proceeds to S39, where the liquid supply pump 40 of the weighing machine 24 is activated, the electromagnetic valve 38 is opened, and fuel (oil liquid) is supplied to the liquid supply nozzle 30. ).

  The subsequent processing of S40 to S46 shown in FIG. 9B is the same as S15 to S21 (see FIG. 8) described above, and therefore the description thereof is omitted here.

  When the liquid supply is performed in the state where the reception sensitivity (reception voltage threshold value) of the wireless tag reader 150 is set to the medium level (see FIGS. 7A and 7B) in S32, the liquid supply port is less than half of the discharge pipe 30a. If the liquid supply nozzle 30 is pulled out to the position where it is inserted into 102, the wireless tag 110 cannot be recognized. Therefore, in S44, the electromagnetic valve 38 is closed and additional liquid supply is prohibited.

  In addition, when supplying liquid in a state where the reception sensitivity (reception voltage threshold) of the RFID tag reader 150 is set to a high level (see FIGS. 7A and 7B) in S36, the tip of the discharge pipe 30a is supplied with liquid. If the liquid supply nozzle 30 is pulled out to a position away from the port 102, the wireless tag 110 cannot be recognized, and the electromagnetic valve 38 is closed in S44 to prohibit additional liquid supply.

  Therefore, by switching the reception sensitivity (reception voltage threshold value) of the RFID tag reader 150, it is possible to eliminate the prohibition of liquid supply due to erroneous detection caused by the displacement of the nozzle insertion position of each operator.

  10A and 10B are flowcharts for explaining the control process 3 executed by the control circuit 36. Since the processing of S51 to S63 shown in FIG. 10A is the same as S31 to S43 (see FIGS. 9A and 9B) described above, the description thereof is omitted here.

  In S60 shown in FIG. 10B, when the wireless tag reader 150 cannot read the data transmitted from the wireless tag 110, it is determined that the liquid supply nozzle 30 is separated from the liquid supply port 102 and the wireless tag 110 cannot be recognized. Then, the process proceeds to S64.

  In S64, it is checked whether or not the additional liquid supply amount is 2 liters or more (or whether or not the additional liquid supply time is 20 seconds or more). In this S65, when the additional liquid supply amount is less than 2 liters (or the additional liquid supply time is less than 20 seconds), the process proceeds to S65 and the measurement of the additional liquid supply amount is started (or the measurement of the additional liquid supply time is started). To do. In S65, the measurement of the additional liquid supply amount is started only in the first time (or the measurement of the additional liquid supply time is started), and the measurement of the additional liquid supply amount is continued (or the additional liquid supply time in the second time and thereafter). Continue measurement).

  In the next S66, it is checked whether or not the liquid supply nozzle 30 has been returned to the nozzle hook 32. When the nozzle hook switch 50 is off, it is determined that liquid supply is being performed and the process proceeds to S60. Return. In S64, when the additional liquid supply is started, if the additional liquid supply amount is less than 2 liters (or the additional liquid supply time is less than 20 seconds), the process proceeds to S65 and the measurement of the additional liquid supply amount is continued. (Or continue measuring the additional liquid supply time).

  In S64, when the amount of liquid supplied by the additional liquid supply is 2 liters or more (or the additional liquid supply time is 20 seconds or more), the process proceeds to S67 and the electromagnetic valve 38 is closed to stop the additional liquid supply. (Fuel supply prohibition means). As a result, even when additional liquid supply is performed at a minute flow rate such that the automatic valve closing does not operate at the liquid supply nozzle 30, it is possible to prevent the fuel from overflowing from the liquid supply port 102 by limiting the additional liquid supply amount.

The reason why the additional liquid supply amount that can be supplied is 2 liters is that the liquid supply nozzle 30 is inserted into the liquid supply port 102 after the liquid supply nozzle 30 is automatically closed and then the discharge pipe 30a is inserted into the liquid supply port 102. This is because the general liquid supply amount when the is shifted in the drawing direction is 2 liters. The reason why the additional liquid supply possible time is set to 20 seconds is that when additional liquid supply is performed at a minute flow rate, 2 liters can be supplied in about 20 seconds. Moreover, since the supply amount of additional liquid supply amount or the additional liquid supply possible time can be arbitrarily set, it is needless to say that numerical values other than the above may be set as appropriate.
In S66, when the nozzle hooking switch 50 is on, it is determined that the liquid supply nozzle 30 has been returned to the nozzle hooking 32, and the process proceeds to S68. In S68, the liquid supply pump 40 is stopped and the current liquid supply process is terminated.

  11A and 11B are flowcharts for explaining the control process 4 executed by the control circuit 36. FIG. Since the processes of S71 to S73 and S75 to S84 shown in FIG. 11A are the same as S31 to S43 (see FIGS. 9A and 9B) described above, description thereof is omitted here.

  In S74 shown in FIG. 11A, unique information (for example, an ID set for each vehicle or customer) included in the data read from the wireless tag 110 is stored.

  Then, it is checked whether or not the wireless tag can be recognized in S81 shown in FIG. 11B and the unique information is the same (matched) with the unique information stored at the start of the liquid supply (the process of S74) (distance detecting means). . In S81, when the wireless tag reader 150 reads the data transmitted from the wireless tag 110, it is determined that the wireless tag 110 has been recognized, and the current (second time) unique information is stored at the start of liquid supply ( If it is the same (matched) with the unique information that was processed in S74, it is determined that the liquid supply nozzle 30 is inserted into the liquid supply port 102 of the same vehicle 100, and the process proceeds to S82. In S82, the liquid supply ready state in which the solenoid valve 38 is opened is maintained.

  In the next S83, it is checked whether or not the liquid supply nozzle 30 has been returned to the nozzle hook 32. If the nozzle hook switch 50 is off, it is determined that liquid supply is being performed, and the process goes to S81. Return. In S83, when the nozzle hooking switch 50 is turned on, it is determined that the liquid supply is finished and the liquid supply nozzle 30 is returned to the nozzle hook 32, and the process proceeds to S84, where the electromagnetic valve 38 is closed. Then, it progresses to S88 mentioned later.

  In S81, when the wireless tag reader 150 cannot read the data transmitted from the wireless tag 110, or the current (second time) unique information is stored at the start of liquid supply (processing in S74). If the information is different (mismatch), the process proceeds to S85 to notify the customer that the data transmitted from the wireless tag 110 cannot be read or the unique information does not match.

  Subsequently, the process proceeds to S86, where the electromagnetic valve 38 is closed to stop the fuel supply to the liquid supply nozzle 30 (fuel supply prohibiting means). As described above, after the wireless tag reader 150 cannot read the data transmitted from the wireless tag 110, the wireless tag reader 150 can read the data transmitted from the wireless tag 110 again. If the data of the wireless tag 110 read at the start of fuel supply (first supply information) and the data read again (second supply information) do not match, the fuel of the fuel supply device 16 By stopping the fuel supply through the supply path, it is possible to prevent liquid supply to another vehicle using the same liquid supply nozzle 30.

  In S81, when the data transmitted from the wireless tag 110 cannot be read, it is determined that the liquid supply nozzle 30 is separated from the liquid supply port 102 and the wireless tag 110 cannot be recognized. As a result, while the liquid supply nozzle 30 is supplying liquid, the discharge pipe 30a of the liquid supply nozzle 30 is pulled out from the liquid supply port 102, and the wireless tag reader 150 is moved out of the data readable range from the wireless tag 110. The liquid supply can be prohibited, and the fuel can be prevented from overflowing from the liquid supply port 102.

  In the next S87, it is checked whether or not the liquid supply nozzle 30 has been returned to the nozzle hook 32. If the nozzle hook switch 50 is off, it is determined that liquid supply is being performed, and the process proceeds to S81. Return. If the nozzle hooking switch 50 is turned on in S87, it is determined that the liquid supply is finished and the liquid supply nozzle 30 is returned to the nozzle hook 32, and the process proceeds to S88. In S88, the liquid supply pump 40 is stopped to end the current liquid supply process.

  In the above embodiment, the case where the distance from the wireless tag 110 is detected using the wireless tag reader 150 has been described as an example. However, the present invention is not limited to this, and the liquid supply nozzle 30 is provided with an infrared sensor or an ultrasonic sensor. It is also possible to detect the distance from the wireless tag 110 in a non-contact manner.

It is a perspective view which shows one Example of the fuel supply apparatus by this invention. It is a figure which shows the state which supplies liquid to a vehicle. It is a figure which expands and shows the liquid supply port. 3 is a side view of a liquid supply nozzle 30. FIG. It is a figure which shows the information reading unit 90, (A) is a top view, (B) is a side view. 3 is a block diagram schematically showing a schematic configuration of an information reading unit 90 and a weighing machine main body 28. FIG. 6 is a diagram illustrating a waveform of a reception voltage corresponding to a distance between the wireless tag 110 and the wireless tag reader 150. FIG. 6 is a diagram illustrating a relationship between a reception sensitivity of a wireless tag reader 150 and a set value of a reception voltage threshold value. FIG. 3 is a flowchart for explaining a control process 1 executed by a control circuit 36. 4 is a flowchart for explaining a control process 2 executed by a control circuit 36. It is a flowchart for demonstrating the control process 2 performed following the process of FIG. 9A. 4 is a flowchart for explaining a control process 3 executed by a control circuit 36; It is a flowchart for demonstrating the control process 3 performed following the process of FIG. 10A. 4 is a flowchart for explaining a control process 4 executed by a control circuit 36. It is a flowchart for demonstrating the control process 4 performed following the process of FIG. 11A.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fuel supply system 16 Fuel supply apparatus 20 Management computer 24 Metering machine 26 Setting device 27 Indicator 28 Metering machine main body 30 Liquid supply nozzle 32 Nozzle hook 36 Control circuit 38 Solenoid valve 40 Liquid feed pump 42 Flowmeter 50 Nozzle hook switch 90 Information Reading unit 92 Wireless transceiver 100 Vehicle 102 Liquid supply port 110 Wireless tag 150 Wireless tag reader 140 Wireless transceiver

Claims (7)

A fuel supply path for supplying fuel;
A fuel supply machine having a nozzle for supplying fuel to the fuel supply port of the fuel supply body via the fuel supply path;
Distance detecting means for detecting whether or not the distance between the nozzle and the fuel supply port of the fuel-supplied supply body is within a predetermined distance;
Fuel supply prohibiting means for prohibiting fuel supply by the fuel supply path when the distance detected by the distance detection means exceeds a predetermined distance;
A fuel supply machine comprising: The fuel supply machine according to claim 1,
The distance detecting means includes
A supply body information storage unit provided near the fuel supply port of the fuel supply body and storing information of the fuel supply body as supply body information;
An information reader that is provided in the nozzle and reads the content stored in the supplier information storage unit in a non-contact manner from the supplier information storage unit;
A fuel supply machine comprising: The fuel supply machine according to claim 2,
The maximum distance that can be received by the information reader is set to be equal to or less than the distance between the information reader and the tip of the nozzle when the nozzle contacts the fuel supply port. The fuel supply machine according to claim 2 or 3,
The supplier information storage unit is a transponder,
The fuel reader according to claim 1, wherein the information reader reads vehicle information transmitted from the transponder. The fuel supply machine according to any one of claims 2 to 4,
The supplier information stored in the supplier information storage unit includes at least the type of fuel to be supplied to the supplier,
The fuel supply unit can supply fuel through the fuel supply path when the type of fuel to be supplied to the supply body read by the information reader matches the type of fuel supplied from the nozzle. A fuel supply machine characterized by: A fuel supply machine according to any one of claims 2 to 5,
When the information reader cannot read the supplier information stored in the supplier information storage unit, the maximum receivable distance is changed to the distance from the information reader to the tip of the nozzle. A fuel supply machine comprising a distance changing means. The fuel supply machine according to any one of claims 2 to 6,
After the information reader cannot read the supply information stored in the supply information storage unit, the information reader reads the supply information stored in the supply information storage again. If the supply information read at the start of fuel supply does not match the supply information read again, the fuel supply apparatus stops the fuel supply through the fuel supply path. .

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