JP5457059B2 - Fuel supply device - Google Patents

Description

  The present invention relates to a fuel supply device, and more particularly to a fuel supply device provided with a display for displaying a fuel supply amount in addition to a main body.

  For example, in a fuel supply apparatus that supplies fuel such as gasoline to a fuel tank (supplied body) of a vehicle, a nozzle is inserted into a fuel supply port of the vehicle to supply the fuel to the fuel tank. The control device of the fuel supply device controls the start or stop of the pump of the fuel supply path by turning on / off the nozzle switch provided on the nozzle hook of the measuring machine main body.

  The operator who operates the nozzle operates the lever of the nozzle in the valve opening direction to start supplying fuel to the fuel tank of the vehicle. When the liquid level in the fuel tank rises and the liquid level detection mechanism of the nozzle detects the liquid level, the automatic valve closing mechanism of the nozzle closes and the fuel supply is stopped. Confirm that the numerical value display has stopped, and then operate the nozzle lever while watching the fuel supply amount displayed on the display unit so that the end of the fuel supply amount displayed on the display unit becomes zero. In many cases, the adjustment operation is performed to match the numerical values.

  By the way, in recent years, with the spread of self-service fuel supply devices, there are an increasing number of cases in which people who are not familiar with the operation operate, and the numerical values displayed on the indicator of the main body of the weighing machine are observed. In some cases, however, the operation is performed little by little after the nozzle lever is operated and the nozzle level detection mechanism is activated to automatically close the valve.

  When performing this alignment operation, the operator moves the nozzle lever so that the decimal point of the displayed numerical value is zero while looking at the indicator on the main body of the weighing machine in a direction different from the nozzle that is supplying fuel. It will be operated intermittently. That is, the operator who performs the adjustment operation pays attention to the change in the numerical value displayed on the indicator of the weighing machine body, and does not look at the fuel supply port in which the nozzle is inserted. There was a risk of operating the nozzle lever without noticing that it would overflow.

  As a means to prevent fuel from overflowing from the fuel supply port when such nozzle operation is performed, the nozzle is provided with a display that displays the flow rate, so that the value of the fuel supply amount displayed on the display can be viewed. However, a nozzle that can confirm the rise in the liquid level of the fuel supply port has been developed (see, for example, Patent Document 1). This type of nozzle is provided with a display and a rechargeable battery. When the nozzle is hooked on the nozzle, the nozzle switch is turned on and the battery is charged.

JP-A-61-190498

  However, in the above fuel supply device, for example, when the driver cleans the window or cleans the vehicle with the nozzle inserted into the fuel supply port even when the nozzle is closed by the liquid level detection mechanism. Since the fuel supply amount is displayed on the nozzle indicator for a long time, the power consumption of the nozzle battery is large, or the next vehicle arrives and the fuel supply starts immediately after the vehicle leaves. In this case, since the charging time for the nozzle is short, the next fuel supply is performed without being sufficiently charged, and the battery voltage drops during the fuel supply, and the display on the nozzle cannot be displayed. There was a fear.

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

In order to solve the above problems, the present invention has the following means.
(1) The present invention provides a fuel supply path communicated with a nozzle for supplying fuel to a supply target;
A supply amount calculation means for calculating a fuel supply amount by integrating flow rate measurement values measured by a flow meter provided in the fuel supply path;
A wireless transmission unit for wirelessly transmitting the fuel supply amount calculated by the supply amount calculating means;
A wireless receiving unit arranged at a position where the nozzle is visually recognized in a state where the nozzle is inserted into the nozzle insertion port of the supply target, and receiving wireless data of the fuel supply amount transmitted from the wireless transmitting unit; An indicator for displaying the supply amount;
A battery provided in the indicator;
A fuel, comprising: a display control unit that is provided in the display unit, intermittently activates the wireless reception unit, and displays the fuel supply amount on the display unit based on the fuel supply amount received by the wireless reception unit; In the supply device,
It is characterized by comprising reception period control means for changing the reception period by the wireless reception unit in inverse proportion to the fuel flow velocity measured by the flow meter.
( 2 ) The present invention has storage means for storing changes in the fuel supply amount transmitted from the wireless transmission unit,
The display control means includes fuel supply amount estimation means for estimating a current fuel supply amount based on a change in the past fuel supply amount from the storage means when the wireless reception unit does not receive the fuel supply amount. Features.
( 3 ) The present invention provides the wireless transmission unit from the intermittent reception mode for intermittent reception when the amplitude value of the pulsation of the flow velocity based on the flow rate measurement value measured by the flow meter exceeds a preset threshold value. It further comprises switching means for switching to a continuous reception mode for continuously receiving the flow rate supply amount transmitted.
( 4 ) The present invention is characterized in that the switching means switches from the intermittent reception mode to the continuous reception mode at the time when a time obtained by adding a preset time constant to the reception period has elapsed.
( 5 ) The present invention provides a fuel supply path that communicates with a nozzle that supplies fuel to a supply target;
A supply amount calculation means for calculating a fuel supply amount by integrating flow rate measurement values measured by a flow meter provided in the fuel supply path;
A wireless transmission unit for wirelessly transmitting the fuel supply amount calculated by the supply amount calculating means;
A wireless receiving unit arranged at a position where the nozzle is visually recognized in a state where the nozzle is inserted into the nozzle insertion port of the supply target, and receiving wireless data of the fuel supply amount transmitted from the wireless transmitting unit; An indicator for displaying the supply amount;
A battery provided in the indicator;
A fuel, comprising: a display control unit that is provided in the display unit, intermittently activates the wireless reception unit, and displays the fuel supply amount on the display unit based on the fuel supply amount received by the wireless reception unit; In the supply device,
Storage means for storing the fuel supply amount transmitted from the wireless transmission unit;
When the wireless receiving unit does not receive the fuel supply amount, the display control unit calculates a fuel flow rate based on a past fuel supply amount from the storage unit, and estimates a timing at which a constant flow rate is supplied by the flow rate. And receiving period control means for activating the wireless receiving unit at the timing.

According to the present invention, since the reception cycle by the wireless reception unit is changed in inverse proportion to the fuel flow velocity measured by the flow meter, the number of times of reception is higher than when the fuel supply amount transmitted from the wireless transmission unit is constantly received. The display time of the display can be shortened by reducing the power consumption of the battery.

It is a perspective view which shows one Example of the fuel supply apparatus by this invention. It is a side view of a nozzle. It is a figure of the indicator provided in the nozzle. 2 is a block diagram schematically showing a schematic configuration of a nozzle display unit 90 and a weighing machine main body 28. FIG. It is a timing chart which shows the transmission cycle of the flow rate display data transmitted from the wireless transmitter 92 on the weighing machine side and the reception cycle of the wireless receiver 140 on the nozzle side. FIG. 3 is a block diagram showing the configuration of each device of the fuel supply device 16. It is a flowchart of the main control process which the control circuit 36 of a weighing machine performs. 6 is a flowchart of nozzle control processing 1 executed by the control unit 130 of the nozzle display unit 90. 4 is a timing chart of each signal by nozzle control processing 1; It is a figure which shows typically the database which stored the relationship between a flow rate and an intermittent operation period. It is a flowchart of the nozzle control process 2 which the control part 130 of the nozzle display unit 90 performs. 10 is a flowchart of nozzle control processing 3 executed by the control unit 130 of the nozzle display unit 90. It is a flowchart of the interruption process A in the nozzle control process 3. FIG. It is a flowchart of the nozzle control process 4 which the control part 130 of the nozzle display unit 90 performs. It is a flowchart of the interruption process B in the nozzle control process 4. FIG. It is a flowchart of the nozzle control process 5 which the control part 130 of the nozzle display unit 90 performs. It is a flowchart of the nozzle control process 6 which the control part 130 of the nozzle display unit 90 performs.

  Hereinafter, embodiments for carrying out the present invention will be described 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 self-service fuel supply system fuel supply device 16 installed in a fuel supply area 12 and a management computer 20 installed in an office 18. The management computer 20 manages each device installed in the fuel supply station, and when the fuel supply request signal is output from the fuel supply device 16, the staff member is in a normal state around the fuel supply device 16. The fuel supply permission signal is transmitted to the fuel supply device 16 by confirming the above and operating the permission button.

  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 measuring device 24 having a pump, a flow meter, and the like, a setting device 26 mounted on the measuring device 24, and a display device 27 that displays an oil type unit price and a fuel 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 nozzle 30 is provided.

  The nozzle 30 is provided with a nozzle display unit 90 as will be described later. The nozzle display unit 90 displays information related to fuel supply such as the flow rate and type of fuel supplied, so that an operator operating the nozzle 30 can check the fuel supply amount while looking at the fuel supply port. Is provided.

  Further, the measuring machine main body 28 is provided with a wireless transmitter 92 that wirelessly transmits information related to fuel supply such as the flow rate and oil type displayed on the display 27 on the nozzle display unit 90. Note that the wireless transmitter 92 performs wireless communication using a communication method called narrow-area communication or DSRC (Dedicated Short Range Communication), and does not interfere with other weighing machines.

  In addition, a hose 34 to which fuel is supplied is connected to each nozzle 30, and the hose 34 is suspended from a hose support portion 35 provided at the upper part of the weighing machine main body 28. Each hose 34 communicates with a fuel supply path (not shown) disposed inside the measuring machine main body 28, and each fuel supply path is provided with devices such as a flow meter, an electromagnetic valve, and a pump.

  FIG. 2 is a side view of the nozzle 30. As shown in FIG. 2, the nozzle 30 includes a discharge pipe 30a inserted into a fuel supply port on the vehicle side, a nozzle body 30b having an automatic valve closing mechanism that automatically closes by detecting the liquid level, and a nozzle body 30b. And a nozzle display unit 90 mounted on the top of the head. Further, the nozzle body 30b includes a grip portion 30c gripped by the operator on the front side of the nozzle display unit 90, and a nozzle lever 30d that is rotated below the grip portion 30c.

In addition, the nozzle display unit 90 is attached in a state of being in close contact with the back side of the nozzle 30 while holding a display unit and a control unit, which will be described later, with a resin mold. Therefore, when the operator grips the grip portion 30c and inserts the discharge pipe 30a into the fuel supply port on the vehicle side,
The back side of the nozzle 30 faces upward. That is, the nozzle display unit 90 faces the operator, and the operator can view information such as the flow rate displayed on the nozzle display unit 90 during fuel supply.

  When performing the fuel supply operation for discharging 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 simultaneously see the nozzle display unit 90 disposed in front of the grip portion 30c and the fuel supply port into which the discharge pipe 30a is inserted while operating the nozzle lever 30d. Accordingly, at the time of fuel supply operation, it is possible to check whether or not there is an overflow from the fuel supply port while checking the integrated fuel supply amount displayed on the nozzle display unit 90, and perform the adjustment operation.

  3A and 3B are diagrams showing the nozzle display unit 90, where FIG. 3A is a plan view and FIG. 3B is a side view. As shown in FIGS. 3A and 3B, the nozzle display unit 90 has a hand display 96 comprising a solar cell panel 94 and a liquid crystal panel (LCD) on the upper surface of a resin case 91 formed in a box shape. And a planar antenna 142 for receiving the flow rate display data transmitted from the wireless transmitter 92 on the weighing machine side. Further, the upper opening 91a 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 hand 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. 4 is a block diagram schematically showing a schematic configuration of the nozzle display unit 90 and the weighing machine main body 28. As shown in FIG. 4, when the fuel supply by the nozzle 30 is started, the control circuit 36 integrates the flow rate pulses output from the flow meter 42, and calculates the value of the integrated fuel supply amount. 28, the same flow rate display data is transmitted to the nozzle display unit 90 mounted on the nozzle 30 via the wireless transmitter (wireless transmitter) 92.

  The nozzle display unit 90 includes a small hand display 96, a control unit 130 including a microcomputer, a wireless receiver (wireless receiving unit) 140 that receives a wireless signal transmitted from the weighing machine 24, and a wireless receiver 140. And a solar cell unit 150 connected to the flat antenna 142. The solar cell unit 150 includes a solar cell panel 94 and a rechargeable battery 154 that stores a current generated from the solar cell panel 94. The hand display 96, the controller 130, and the wireless receiver 140 of the nozzle display unit 90 operate using the rechargeable battery 154 as a power source.

  The control unit 130 of the nozzle 30 includes a reception cycle control unit (reception cycle control means) 132 that changes the reception cycle of the wireless receiver 140 in accordance with the fuel flow velocity measured by the flow meter 42. The reception cycle control unit 132 normally displays the flow rate display data received every 50 msec on the hand display 96 every 200 msec, but intermittent reception from the continuous reception mode when the fuel flow velocity becomes higher than a predetermined value. The mode is switched, and the reception cycle is changed to intermittent reception of 50 msec or more (for example, 200 msec) to suppress the voltage drop of the rechargeable battery 154 by the hand display 96.

  FIG. 5A to FIG. 5C are timing charts showing the transmission cycle of the flow rate display data transmitted from the wireless transmitter 92 on the weighing machine side and the reception cycle of the wireless receiver 140 on the nozzle side. As shown in FIG. 5A, when the fuel supply by the nozzle 30 is started, the control circuit 36 integrates the flow rate pulses output from the flow meter 42, and the flow rate display data via the wireless transmitter 92. Is transmitted every 10 msec.

  As shown in FIG. 5B, the control unit 130 of the nozzle display unit 90 receives the flow rate display data transmitted via the wireless transmitter 92 by activating the wireless receiver 140 every 50 msec. Therefore, the control unit 130 does not receive all the flow rate display data transmitted from the weighing machine side, but receives the data transmitted every 10 msec every time interval (50 msec) extended by 5 times. It saves power.

  As shown in FIG. 5C, the control unit 130 activates the radio receiver 140 every time interval (200 msec) obtained by extending the flow rate display data received by the reception cycle control unit 132 every 50 msec by four times. Display on the hand display 96. Furthermore, when the fuel flow velocity becomes higher than a predetermined value, the continuous reception mode (reception cycle 200 msec) is switched to the intermittent reception mode (reception cycle 400 msec) in inverse proportion to the flow velocity, and power consumption in the hand display 96 is saved. Can do.

  FIG. 6 is a block diagram showing the configuration of each device of the fuel supply device 16. As shown in FIG. 6, the control circuit 36 of the fuel supply device 16 is constituted by a microcomputer, and a two-stage closing provided in a setting device 26, a display device 27, a power supply circuit 37, and each fuel supply line. Valve type solenoid valve 38, pump 40, flow meter 42, memory 44, human detection sensor 46, intercom 48, nozzle hooking switch 50 provided on nozzle hook 32, static electricity removal detecting switch 54, slip issuing machine 58 for issuing slips The speaker 60 for performing voice guidance and the wireless transmitter 92 are connected.

  Further, the control circuit 36 includes various display lamps such as a static electricity removing lamp 52, a slip issuing lamp 56, fuel selection buttons 64 to 66, a full button 68, supply amount setting buttons 70 to 73, and amount setting buttons 76 to 79. It is connected.

  The memory 44 stores various control programs. The control circuit 36 reads various control programs stored in the memory 44 and executes each control process.

  The power supply circuit 37 is connected via a power supply cable (not shown) so as to supply not only the control circuit 36 but also all other devices constituting the fuel supply device 16.

  Then, the control circuit 36 lights or blinks a lamp corresponding to an operation to be performed next in accordance with an input operation by the operator, and causes the speaker 60 to utter voice guidance.

  FIG. 7 is a flowchart for explaining the main control process executed by the control circuit 36 of the weighing machine 24. In FIG. 7, the control circuit 36 checks whether or not the nozzle hooking switch 50 is off in S11. When the operator lifts the liquid supply nozzle 30 from the nozzle hook 23 to perform the liquid supply operation, the nozzle hook switch 50 is switched off. Accordingly, when the nozzle hooking switch 50 is turned off in S11 (in the case of YES), the process proceeds to S12 and the pump 40 is activated. At the same time, the display on the indicators 27 and 96 is reset to zero in S13.

  In the next S14, it is checked whether or not a flow rate pulse is output from the flow meter 42. When the operator operates the nozzle lever 30d of the nozzle 30 in the valve opening direction to start fuel supply, the flow meter 42 outputs a flow rate pulse having a period proportional to the flow rate. Therefore, if a flow rate pulse is output in S14 (in the case of YES), the process proceeds to S15, and the flow rate pulse is integrated to calculate the fuel supply amount (supply amount calculation means).

  Subsequently, the process proceeds to S <b> 16, and the current fuel supply amount (integrated flow rate) is displayed on the display device 27 of the weighing machine 24. At the same time, in S <b> 17, the flow rate display data is transmitted from the wireless transmitter 92 to the control unit 130 of the nozzle 30. As a result, the control unit 130 of the nozzle 30 receives the transmitted flow rate display data by the wireless receiver 140 and displays the fuel supply amount on the hand display 96 as shown in FIG. Therefore, the operator can view the hand display 96 of the nozzle display unit 90 and the fuel supply port on the vehicle side into which the discharge pipe 30a is inserted simultaneously while performing the nozzle operation.

  In next S18, it is checked whether or not the fuel flow velocity is zero based on the presence or absence of a flow rate pulse. When it is determined in S18 that the flow velocity has become zero (in the case of YES), it is determined in S19 that the automatic valve closing mechanism of the nozzle 30 has been closed by liquid level detection.

  In the next S20, it is checked whether or not the nozzle switch 50 of the nozzle hook 32 has been turned on. In S20, when the nozzle switch 50 of the nozzle hook 32 is OFF (in the case of NO), the fuel is being supplied, and thus the process of S20 is repeated. When the fuel supply is completed and the operator returns the nozzle 30 to the nozzle hook 32, the nozzle switch 50 is turned on. Therefore, in S20, when the nozzle switch 50 of the nozzle hook 32 is turned on (in the case of YES), it is determined that the fuel supply by the nozzle 30 has been completed, the process proceeds to S21, and the pump 40 is stopped. This completes a series of control processes.

  Next, the nozzle control process 1 executed by the control unit 130 of the nozzle display unit 90 will be described with reference to FIG. As shown in FIG. 8, the control unit 130 checks in S31 whether or not the display cycle (for example, 200 msec) of the nozzle-side hand display 96 has elapsed. In S31, when the display period of the hand display 96 has passed (in the case of YES), the process proceeds to S32, and the current fuel supply is made by comparing the period of the flow rate pulse output from the flow meter 42 with a preset threshold value. Is determined as to whether the current flow rate is the high flow rate mode (determined in S43) or the low flow rate mode (determined in S44).

  If it is determined in S32 that the mode is the high flow rate mode, the process proceeds to S33, and it is checked whether or not the wireless receiver 140 has been activated in the previous control process. In S33, when the wireless receiver 140 is activated in the previous control process (in the case of YES), since it is not necessary to activate in the current control process, the intermittent reception mode is set and the process proceeds to S34, and the flow rate pulse is changed. An estimated value of the fuel supply amount is calculated from the flow velocity obtained from the period (fuel supply amount estimation means). Then, it progresses to S35 and displays the estimated value of fuel supply amount on the hand indicator 96 (display control means). In S35, the estimated value of the fuel supply amount is calculated from the flow velocity obtained from the flow rate pulse period and displayed on the hand display 96 (see FIGS. 9C and 9D). The fuel supply amount is displayed.

  If it is determined that the high flow rate mode is determined in S32 and the wireless receiver 140 is not activated in the previous control process in S33 (in the case of NO), the process is activated in the current control process. Then, the wireless receiver 140 is activated. As described above, in this control process, when the high flow rate mode is set (when the threshold value is equal to or higher than the threshold value in FIG. 9A), the radio receiver 140 is activated at a rate of once every two times by the processes of S33 and S36. (Refer to FIG. 9B), the number of activations of the wireless receiver 140 can be reduced to 50%, and the power consumption of the rechargeable battery 154 can be suppressed.

  If it is determined in S32 that the low flow rate mode is selected, the continuous reception mode is set and the process proceeds to S36, where the wireless receiver 140 is activated. Therefore, in the low flow rate mode (less than the threshold value in FIG. 9A), the wireless receiver 140 is activated each time by the processing of S32 and S36, and the flow rate display data transmitted from the wireless transmitter 92 is read each time. Then, the read flow display data is displayed on the hand display 96.

  Therefore, the numerical value displayed on the hand display 96 is precise even when performing an adjustment operation at a low flow rate after the nozzle 30 automatically closes by detecting the liquid level (an operation for adjusting the end of the fuel supply amount to zero). Is displayed. Therefore, the operator can visually recognize the fuel supply amount displayed on the hand display 96 of the nozzle 30 while inserting the nozzle 30 into the fuel supply port of the vehicle and supplying the fuel. It is possible to supply the fuel up to the perfect value, and no fuel spills from the fuel supply port.

  In next step S37, it is checked whether or not the fuel supply data transmitted from the wireless transmitter 92 of the weighing machine main body 28 has been received. In S37, when the fuel supply data transmitted from the wireless transmitter 92 of the weighing machine main body 28 cannot be received (in the case of NO), the process proceeds to S38, and whether the transmission data time interval (for example, 10 msec) has elapsed Check whether or not. In S38, when the transmission data time interval (for example, 10 msec) has not elapsed, the process returns to S37.

  In S38, when a time interval (for example, 10 msec) has passed while the fuel supply data transmitted from the wireless transmitter 92 cannot be received (in the case of YES), the process proceeds to S38a and the wireless receiver 140 is set in a standby state. Set to. Then, the process proceeds to S45.

  In S37, when the fuel supply data transmitted from the wireless transmitter 92 of the weighing machine main body 28 can be received (in the case of YES), the process proceeds to S39 and the received fuel supply amount is displayed on the hand display 96. Display (display control means). In the next S40, the wireless receiver 140 is set in a standby state.

  Subsequently, in S41, the flow velocity is calculated from the received fuel supply data. Then, in S42, it is checked whether or not the calculated flow velocity value is equal to or greater than a preset threshold value (for example, 5 liters / minute).

  In S42, when the calculated flow velocity value is equal to or greater than a preset threshold value (for example, 5 liters / minute) (in the case of YES), the flow proceeds to S43, where it is determined that the high flow velocity mode is set, and the high flow velocity mode is established. Remember.

  The threshold value may be a numerical value set in advance, or may be a method of having a database 100 (see FIG. 10) storing intermittent operation cycles and reading the intermittent operation cycles according to the flow velocity.

  In S42, when the calculated flow velocity value is less than a preset threshold value (for example, 5 liters / minute) (in the case of NO), the process proceeds to S44, where it is determined that the low flow velocity mode is set. Memorize the flow rate mode. In the present embodiment, the switching means is configured by S42 to S44.

  In next S45, it is checked whether or not the rechargeable battery 154 is off. In S45, when the rechargeable battery 154 is on, the process returns to S31, and the control processing after S31 is repeated. In S45, when the rechargeable battery 154 is off, the nozzle control process 1 ends.

Here, a modified example of the nozzle control process will be described.
(Modification 1)
FIG. 11 is a flowchart of nozzle control processing 2 executed by the control unit 130 of the nozzle display unit 90. In FIG. 11, the control process of S51 to S61 is the same as the control process of S31 to S41 described above, and thus the description thereof is omitted.

  In S62, the amplitude of pulsation is calculated from the flow velocity. If the valve opening degree of the nozzle 30 is constant, the flow rate discharged from the nozzle 30 is also substantially constant. However, depending on the operator, the nozzle lever 30d may be moved during fuel supply, and the flow rate also pulsates as the valve opening of the nozzle 30 varies. When the pulsation of the flow velocity is small, it is possible to estimate the flow velocity, but when the pulsation is large, it is difficult to estimate the flow velocity.

  Therefore, in S63, it is checked whether or not the calculated flow velocity value is greater than or equal to a preset threshold value (for example, 5 liters / minute), and whether or not the pulsation amplitude is less than the threshold value (for example, 3 liters / minute). Check.

  In S63, when the calculated flow velocity value is equal to or greater than a preset threshold value (for example, 5 liters / minute) and the pulsation amplitude is less than the threshold value (for example, 3 liters / minute) (in the case of YES) The process proceeds to S64, where it is determined that the high flow rate mode is set, and the high flow rate mode is stored.

  Note that the threshold value may be a numerical value set in advance, or may be a method having a database (see FIG. 17) storing intermittent operation cycles and reading the intermittent operation cycles according to the flow velocity.

  In S63, when the calculated flow velocity value is less than a preset threshold value (for example, 5 liters / minute) and the pulsation amplitude is not less than the threshold value (for example, 3 liters / minute) (in the case of NO) ), Proceed to S65, determine that the low flow rate mode is selected, and store the low flow rate mode.

  In S66, it is checked whether or not the rechargeable battery 154 is off. In S66, when the rechargeable battery 154 is on, the process returns to S51, and the control processing after S51 is repeated. In S66, when the rechargeable battery 154 is off, the nozzle control process 2 ends.

Thus, in this first modification, when the flow velocity is less than a threshold value (for example, 5 liters / minute) and the pulsation amplitude is greater than or equal to the threshold value (for example, 3 liters / minute), it is determined that the low flow velocity mode is set. By doing so, the flow velocity (flow velocity) is not estimated when the flow velocity (flow velocity) is unstable, and the numerical value displayed on the hand display 96 is used as flow rate display data based on the received measurement value. The reliability of the hand display 96 can be ensured.
(Modification 2)
FIG. 12 is a flowchart of nozzle control processing 3 executed by the control unit 130 of the nozzle display unit 90. In FIG. 12, the control processing of S71 to S80 and S82 is the same as the control processing of S31 to S40 and S45 described above, and thus the description thereof is omitted.

  In S81 of FIG. 12, interrupt processing A is performed. In this interrupt process A, as shown in FIG. 13, the flow velocity is calculated from the period of the flow rate pulse in S91. Subsequently, the process proceeds to S92, and the pulsation amplitude is calculated from the flow velocity.

  Subsequently, in S93, it is determined whether the current flow rate of the fuel supply is the high flow rate mode or the low flow rate mode based on a comparison between the cycle of the flow rate pulse output from the flow meter 42 and a preset threshold value. When it is determined in S93 that the high flow rate mode is selected, the process proceeds to S94, where it is checked whether or not the calculated flow velocity value is equal to or less than a preset threshold value (for example, 5 liters / minute) and the pulsation amplitude is the threshold value. Check whether or not (for example, 3 liters / minute) or more.

  In S94, when the calculated flow velocity value is not more than a threshold value (for example, 5 liters / minute) or the pulsation amplitude is not less than the threshold value (for example, 3 liters / minute) (in the case of YES), the process proceeds to S95 and the flow rate is low. It is determined that the flow rate mode is selected, and the low flow rate mode is stored. In S94, when the calculated flow velocity value is not more than a preset threshold value (for example, 5 liters / minute) or the pulsation amplitude is not more than the threshold value (for example, 3 liters / minute) (in the case of NO). The current interrupt process A is terminated without storing the low flow rate mode.

  If the low flow rate mode is determined in S93, the process proceeds to S96 to check whether the calculated flow velocity value is equal to or higher than a preset threshold value (for example, 5 liters / minute) and pulsation. It is checked whether or not the amplitude is less than a threshold value (for example, 3 liters / minute), and whether or not the state where the flow rate is equal to or greater than the threshold value and the pulsation amplitude is less than the threshold value continues for 3 seconds.

  In S96, the value of the flow velocity is not less than a preset threshold value (for example, 5 liters / minute), the pulsation amplitude is less than the threshold value (for example, 3 liters / minute), the flow rate is not less than the threshold value, and the pulsation amplitude is When the state below the threshold value continues for 3 seconds (in the case of YES), the process proceeds to S97, where it is determined that the mode is the high flow rate mode, and the high flow rate mode is stored.

  In S96, the value of the flow velocity is less than a threshold value (for example, 5 liters / minute), the pulsation amplitude is not less than the threshold value (for example, 3 liters / minute), the flow velocity is not less than the threshold value, and the pulsation amplitude is less than the threshold value. When the state does not continue for 3 seconds (in the case of NO), the current interrupt process A is terminated without storing the high flow rate mode. In the second modification, the switching means is configured by S93 to S97.

  As described above, in the second modification, even when it is determined in S72 that the flow rate alone is the low flow rate mode, in S96, the flow rate is equal to or higher than the threshold value (for example, 5 liters / minute) and the pulsation amplitude is the threshold value (for example, 3 liters / minute), and when the flow rate is greater than or equal to the threshold value and the pulsation amplitude is less than the threshold value for 3 seconds, the mode is switched to the high flow rate mode. Thus, the reliability of the hand display 96 can be further increased.

Even if it is determined in S72 that the flow rate alone is the high flow rate mode, in S94, the value of the flow rate is equal to or less than a threshold value (for example, 5 liters / minute), or the pulsation amplitude is a threshold value (for example, 3 liters / minute). Since the low flow rate mode is switched to the low flow rate mode in the above case, the measurement value is prioritized over the estimated value by further relaxing the determination conditions of the low flow rate mode, and the reliability of the hand display 96 is further improved. Is possible.
(Modification 3)
FIG. 14 is a flowchart of nozzle control processing 4 executed by the control unit 130 of the nozzle display unit 90. In FIG. 13, the control processing of S102 to S110 and S112 is the same as the control processing of S32 to S40 and S45 described above, and thus the description thereof is omitted.

  In S101 of FIG. 14, whether or not a time obtained by adding an intermittent cycle c (time constant) corresponding to the voltage value of the rechargeable battery 154 to a preset display cycle of the hand display 96 (for example, 200 msec) has elapsed. Check.

  In S111 of FIG. 14, interrupt processing B is performed. As shown in FIG. 15, the interrupt process B measures the voltage of the rechargeable battery 154 in S <b> 121 and stores the measured voltage value. In next S122, an intermittent period c corresponding to the measured voltage value of the rechargeable battery 154 is obtained. The intermittent period c may be obtained by an arithmetic expression, or may be obtained by a method of extracting a numerical value stored in a database according to a voltage value.

  Since the control processing of S123 to S129 is the same as the control processing of S91 to S97 of FIG. 13 described above, description thereof is omitted. In the third modification, the switching means is configured by S125 to S129.

Thus, in the third modification, a time is set by adding the intermittent period c corresponding to the voltage value of the rechargeable battery 154 to the display period (for example, 200 msec) of the hand display 96 preset in S101. Therefore, for example, by increasing the intermittent period c in inverse proportion to the voltage value of the rechargeable battery 154, the start-up interval of the wireless receiver 140 is lengthened as the voltage value decreases, thereby reducing the voltage of the rechargeable battery 154. It becomes possible to suppress.
(Modification 4)
FIG. 16 is a flowchart of nozzle control processing 5 executed by the control unit 130 of the nozzle display unit 90. In FIG. 16, the control processing of S133 to S142 is the same as the control processing of S32 to S41 described above, and thus the description thereof is omitted.

  In S131 of FIG. 16, the timer counter is set to 0.2 seconds. In the next S132, it is checked whether or not the intermittent time t set in the timer counter (t = 0.2 seconds immediately after power-on) has elapsed.

  In S143 of FIG. 16, the time required to supply 1 liter is measured based on the flow rate. In the next S144, the measurement time is set as the intermittent time t. Therefore, when the process of S132 is performed next, the control process after S145 is performed after the intermittent time t set in S144 has elapsed.

As described above, in the fourth modification, in order to measure the time during which the predetermined flow rate is supplied and set the measurement time in the timer counter, for example, according to the past flow velocity when the predetermined flow rate is supplied. The intermittent time t can be updated, and the activation interval of the wireless receiver 140 can be adjusted for each intermittent time according to the flow rate. For example, when the flow rate is high, the intermittent time is lengthened and the rechargeable battery 154 It is possible to suppress the voltage drop.
(Modification 5)
FIG. 17 is a flowchart of the nozzle control process 6 executed by the control unit 130 of the nozzle display unit 90. In FIG. 16, the control processing of S151 and S153 to S161 is the same as the control processing of S31 and S33 to S41 described above, and a description thereof will be omitted.

  In S152 of FIG. 17, it is determined whether the flow rate stable mode is set or the flow rate unstable mode is set. In S152, when the flow velocity stabilization mode is set, the processing after S153 (calculation of the estimated value based on the flow velocity in S154) is performed. In S152, when the flow velocity unstable mode is set, processing after S156 (reception processing of the flow rate display data by the receiver 140) is performed.

  In S162 of FIG. 17, it is checked whether the flow velocity is stable from the period of the flow rate pulse. In S162, when the cycle of the flow rate pulse is a constant value that is the same for a predetermined time (in the case of YES), the process proceeds to S163, where it is determined that the flow rate is stable and stored. In S162, when the cycle of the flow rate pulse fluctuates within a predetermined time (in the case of NO), the flow proceeds to S164, where it is determined that the flow rate is unstable mode and is stored.

  Accordingly, in the present modification 5, either the flow rate stable mode or the flow rate unstable mode is set according to the flow rate fluctuation rate, so in the next process of S152, the flow rate change (flow rate stable) obtained in the previous process is set. It is possible to select either the flow rate measurement value or the estimated value according to the property) and display it on the hand display 96.

  In the above embodiment, the fuel supply device that supplies liquid fuel such as gasoline or light oil has been described as an example. However, the present invention is not limited to this, and other fuels (for example, CNG, LNG, LPG, hydrogen, etc.) Of course, the present invention can also be applied to a fuel supply apparatus for supplying the fuel.

  Further, in the above embodiment, the self-service fuel supply device has been described as an example. However, the present invention is not limited to this, and the present invention can be applied to a so-called full-service method operated by an operator at the fuel supply station. It is.

  Moreover, in the said Example, although the structure which provided the hand indicator in the nozzle was mentioned as an example, it demonstrated not only this but the position (face side) which an operator can visually recognize in the state which inserted the nozzle in the fuel supply port ( For example, a portable display device may be provided on the hose or the vehicle body side). In this case, at least two portable indicators may be arranged for one fuel supply device, handed to the driver at the entrance, and collected at the exit.

  In the above-described embodiment, a configuration in which a plurality of fuel supply paths are provided in one fuel supply apparatus has been described as an example. However, it is sufficient that at least one fuel supply path is provided in one fuel supply apparatus. .

DESCRIPTION OF SYMBOLS 10 Fuel supply system 12 Fuel supply area 16 Fuel supply apparatus 18 Office 20 Management computer 24 Weighing machine 26 Setting device 27 Indicator 28 Weighing machine main body 30 Nozzle 32 Nozzle hook 36 Control circuit 37 Power supply circuit 38 Two-stage valve 40 Pump 42 Flow meter 44 Memory 46 Human detection sensor 50 Nozzle hook switch 54 Static electricity removal detection switch 58 Slip issuing machine 64-66 Fuel selection button 70-73 Supply amount setting button 76-79 Amount setting button 90 Nozzle display unit 92 Wireless transmission 94 Solar panel 96 Hand display 130 Control unit 132 Reception cycle control unit 140 Wireless receiver 142 Planar antenna 150 Solar cell unit 154 Rechargeable battery

Claims (5)

A fuel supply path in communication with a nozzle for supplying fuel to the supply target;
A supply amount calculation means for calculating a fuel supply amount by integrating flow rate measurement values measured by a flow meter provided in the fuel supply path;
A wireless transmission unit for wirelessly transmitting the fuel supply amount calculated by the supply amount calculating means;
A wireless receiving unit arranged at a position where the nozzle is visually recognized in a state where the nozzle is inserted into the nozzle insertion port of the supply target, and receiving wireless data of the fuel supply amount transmitted from the wireless transmitting unit; An indicator for displaying the supply amount;
A battery provided in the indicator;
A fuel, comprising: a display control unit that is provided in the display unit, intermittently activates the wireless reception unit, and displays the fuel supply amount on the display unit based on the fuel supply amount received by the wireless reception unit; In the supply device,
A fuel supply apparatus, comprising: a reception cycle control means for changing a reception cycle by the wireless reception unit in inverse proportion to a fuel flow velocity measured by the flow meter. Storage means for storing changes in the fuel supply amount transmitted from the wireless transmission unit;
The display control means includes fuel supply amount estimation means for estimating a current fuel supply amount based on a change in the past fuel supply amount from the storage means when the wireless reception unit does not receive the fuel supply amount. The fuel supply device according to claim 1, wherein When the amplitude value of the pulsation of the flow velocity based on the flow rate measurement value measured by the flow meter exceeds a preset threshold value, the flow rate supply amount transmitted from the wireless transmission unit from the intermittent reception mode for intermittent reception the fuel supply device according to claim 1 or 2, characterized in that a switching means for switching to the continuous reception mode for continuously receiving. The fuel supply device according to claim 3 , wherein the switching unit switches from the intermittent reception mode to the continuous reception mode when a time obtained by adding a preset time constant to the reception cycle has elapsed. A fuel supply path in communication with a nozzle for supplying fuel to the supply target;
A supply amount calculation means for calculating a fuel supply amount by integrating flow rate measurement values measured by a flow meter provided in the fuel supply path;
A wireless transmission unit for wirelessly transmitting the fuel supply amount calculated by the supply amount calculating means;
A wireless receiving unit arranged at a position where the nozzle is visually recognized in a state where the nozzle is inserted into the nozzle insertion port of the supply target, and receiving wireless data of the fuel supply amount transmitted from the wireless transmitting unit; An indicator for displaying the supply amount;
A battery provided in the indicator;
A fuel, comprising: a display control unit that is provided in the display unit, intermittently activates the wireless reception unit, and displays the fuel supply amount on the display unit based on the fuel supply amount received by the wireless reception unit; In the supply device,
Storage means for storing the fuel supply amount transmitted from the wireless transmission unit;
When the wireless receiving unit does not receive the fuel supply amount, the display control unit calculates a fuel flow rate based on a past fuel supply amount from the storage unit, and estimates a timing at which a constant flow rate is supplied by the flow rate. And a fuel supply device comprising a reception cycle control means for activating the wireless receiver at the timing.

Images