JPH032757B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present application relates to a device that is used at a gas station and is designed to automatically stop refueling when a desired amount or amount of refueling is completed. be.

(b) Prior art In order to save labor in refueling work and to stop refueling exactly at the refueling value (refueling amount or refueling amount) desired by the customer, the desired refueling value is determined in advance as seen in JP-A-55-1989-9299. A device that starts refueling by setting the value and stops refueling when the refueling value matches the set value has been manufactured and is already in use at many gas stations.

(c) Problems to be Solved by the Invention However, in the conventional method described above, an operation to set the oil supply value must be performed before starting oil supply (before discharging oil); Settings cannot be made after refueling has started. In other words, refueling cannot be started until it is confirmed that the customer has fully refueled, or that the desired amount or price has been specified, especially during morning and evening refueling, when prompt work is required. In addition, it had the disadvantage that the customer's rotation was delayed, and it required a switch for setting.

(d) Configuration and creation to solve the problem The present application eliminates the need for the switch for setting the desired lubrication value, and also enables setting during lubrication. means for outputting, a pulse signal counting means, a limit value setting means, a means for outputting a judgment signal corresponding to the number of interruptions or restarts of refueling, and a means for converting the number of judgment signals into a desired value and storing it. , the main components are a means for displaying a desired value and a means for comparing the desired value and the oil supply value, and the system is configured to check that the oil supply value does not reach the upper limit value set as the limit value when refueling is started. ,
A desired value based on the number of intermittent changes in refueling is stored on condition that a certain period of time has not elapsed after refueling is once interrupted or restarted.

When the difference between the desired value and the refueling value matches a predetermined value, the refueling is stopped and the refueling at the desired value is completed.

(E) Embodiment In FIG. 1, reference numeral 2 denotes a main unit installed along the wall 6 of a gas station building 4, and inside it is driven to rotate by a motor 8 and connected to an oil storage (not shown) through a suction pipe 10. A pump 12 that pumps up oil from a tank, a flowmeter 16 that measures the amount of oil sent through an oil pipe 14, and a flow meter 16 that measures a unit amount of oil (for example, 1/100 liter) Pulse transmitter 1 that outputs flow rate pulse signal a
8. Control unit 20 in which each electric circuit described below is housed
A display section 22 for displaying refueling information such as refueling amount, unit price, and refueling amount, a keyboard 24, and a display shelf 26 and an advertisement installation frame 28 are also provided.

30 is a hose unit suspended from the lower surface of the canopy 32, and includes a hose reel 38 around which the other end of a hose 36 with a nozzle 34 connected to its tip is wound.
A reversible motor 40 for rotationally driving the oil reel 38 and the oil reel 38 is installed therein, and oil is supplied through an oil feed pipe 42.

In Figures 2A and B, 44 indicates the refueling machine number,
46 is a display that displays the oil type, 48 is a unit price display, 50 is a fuel supply amount display, and 52 is a display that normally displays the fuel amount and temporarily switches to display a set value, which will be described later, in place of the fuel amount. Fuel amount display. 54
is a switching content display that displays the display content on the refueling amount display 52.

In FIG. 3, 56 is a counting circuit that counts the number of pulse signals a and outputs the counting result as an oil supply amount signal b, and 58 is a unit price setting device, and the unit price input from here is a unit price signal stored in the setting circuit 60. c is output.

62 integrates the value of 1/100 of the unit price signal c (here, the unit price is 150 yen/liter, so 1.5 yen) every time signal a (1/100 liter pulse) is input, and uses the result for refueling. An arithmetic circuit that outputs the amount signal d, 64 is a judgment circuit, and a limit value setter 66
In addition to the limit value (upper limit value) set to, for example, 9 liters, the upper limit value signal e, the pulse signal a, the oil supply amount signal b, and the clock signal f output from the clock pulse generation circuit 68 are input, and the later-described determination is made. Outputs signal (one pulse) g.

70 is a storage circuit that converts the number of judgment signals g into a desired value and stores it, and also outputs a constant time switching signal i that outputs a value corresponding to the contents of the stored value as a set value signal h; Compare the set value signal h and the refueling amount signal b, and when they match, the motor control signal (refueling limit signal) (one pulse) j is
Alternatively, when the difference between the two matches the set value set in the control value setting circuit 74, this motor control signal j
Comparing circuits 76 and 78 are switching circuits that switch the display content of each display 52 and 54 when the switching signal i is input.

Reference numeral 80 denotes a signal generation circuit, and a lift switch 82 consisting of a single switch is operated to input a lift signal (one pulse) k. This signal k is input twice. The return zero signal (one pulse) l is output once every time, and the motor control circuit 8 is output simultaneously with the output of the signal l.
4, a motor energizing signal m is output, and at the same time a motor forward rotation signal (one pulse) n is output to the motor control circuit 86, and when the next lifting signal k is input, the motor energizing signal m disappears and the motor reverse rotation signal (one pulse) n ' is output.

In the above configuration, when starting the refueling operation, the switch 82 is first operated to output the lift signal k, and then the signal generating circuit 80 outputs the signals l, m, n.
is output. The arithmetic circuit 6 is activated by the return zero signal l.
2. The values held in the counting circuit 56 and the memory circuit 70 are returned to zero, and zero is displayed on the display spots 52 and 50. The motor 8 is energized by the motor energizing signal m, and the pump 12 is activated. is driven to rotate.
Furthermore, the motor 40 is
is energized to rotate in the normal direction, the hose 36 is let out, and the nozzle 34 descends from the two-dot chain line position (refueling standby position) to the solid line position (refueling position) in FIG. 1 and automatically stops.

Next, when the valve opening/closing lever 38 of the nozzle 34 is operated to start refueling, as described above, a number of pulse signals a corresponding to the amount of oil to be supplied are inputted to the counting circuit 56 and counted as the amount of oil to be supplied. At the same time, the calculation circuit 6
In step 2, the refueling amount is accumulated and the accumulated value is output as the refueling amount signal d, but since the switching signal i does not exist at this time, the switching circuit 76 passes this signal d and displays it on the refueling amount display 52 as the refueling amount. , "YEN" indicating the display content on the display 52 is displayed on the switching content display 54.

Once the customer's desired amount (for example, 30 liters) is determined, the lever 38 of the nozzle 34 is operated to change the flow rate the number of times corresponding to the predetermined 30 liters. When this change in flow velocity occurs (in this case, the interruption of generation of the flow rate pulse signal a may be regarded as a change, or the restart of generation may be regarded as a change), the determination circuit 64 determines that when this first change occurs, On the condition that the count value of the counting circuit 56 in , does not exceed the value (9 liters) preset in the limit value setting circuit 66, one judgment signal g is output for each change and stored in the memory circuit. give.

In this case, since the desired amount is 30 liters, the oil flow rate may be changed three times.

The storage circuit 70 adds and stores 10 liters each time the judgment signal g is inputted, and outputs the switching signal i for a certain period of time (for example, 2 seconds) every time the signal g is inputted to the switching circuit 76, Give to 78.

In the switching circuit 76, while the switching signal i is being input, instead of the refueling amount signal d, a set value signal h (initially 10 liters) indicating the value stored in the storage circuit 70 is given to the display 52 for display. At the same time, the switching circuit 78 changes the display on the display 54 to "YEN".
``PSLITTERS'' is displayed instead of ``PSLITTERS'' to clarify the content of the numerical value currently displayed on the display 52.

Subsequently, when the oil flow rate is changed once, one more judgment signal g is output, and the memory circuit 70 changes this into a set value and stores it, displays it on the display 52, and repeats this process once more. At this time, the display state on the display section 22 is as shown in FIG. 2B.

Then, when a certain period of time (2 seconds) elapses after the last judgment signal g is input, the switching signal i disappears, and the display 52 displays the refueling amount based on the refueling amount signal d, and further displays Vessel 54 is “YEN”
The display returns to the state shown in FIG. 2A. Therefore, the operator only has to operate the lever 88 while looking at the display 52.

Note that the determination circuit 64 does not output the determination signal g, that is, does not accept it, if the value of the oil supply amount signal b exceeds the value of the upper limit signal e when the oil flow rate changes.
Further, if there is no change within a predetermined period of time, for example 1.5 seconds, after a change in flow velocity, the determination circuit 64 will not accept any subsequent change and will not output the determination signal g. do not have.

This misconfiguration occurs, for example, when the upper limit is set to 9 liters and the amount of refueling is about 5 liters.
If 10 liters is set as the desired value, the nozzle may close automatically when the amount of oil supplied is less than 9 liters due to the effects of oil droplets, or the oil tank may fill up sooner than expected and the lever 38 may close. This is to prevent the inconvenience that the judgment signal g is output when it becomes necessary to perform a flow rate adjustment operation. Time is measured by counting the number of signals f.

As refueling progresses and the value of the refueling amount signal b matches the value of the set value signal h, the comparator circuit 72 outputs a motor control signal j and supplies it to the motor control circuit 84 to de-energize the motor 8, thereby deactivating the pump. 12 and finished refueling 30 liters. In addition, if the control value setting circuit 74 is provided, the motor control is performed when the difference between the value of the oil supply amount signal b and the value of the set value signal h matches the value set in the control value setting circuit 74. A signal j is output to cut off the energization of the motor 8, and thereafter oil is supplied by the inertia of the motor 8 and the pump 12, and the oil supply is stopped at exactly 30 liters.

When refueling is completed and the rear switch 82 is operated, the signal generating circuit 80 stops outputting the motor energizing signal m (if refueling is completed without setting the desired amount, that is, during so-called full refueling, the motor 8 is still activated). (In this case, the motor is deenergized because the motor is energized.) At the same time, the motor reverse signal n' is output and the
0 is reversely biased and the hose 36 is wound up,
The nozzle 34 stops at the position indicated by the two-dot chain line in FIG. 1 and waits for the next refueling.

Although the details have been explained above, instead of controlling the rotation of the motor 8 for the pump 12 by the motor control signal j, the solenoid valve inserted into the oil feed pipe 42 may be controlled to close, and the comparison circuit 72 outputs a motor deceleration signal a little before the oil supply amount signal b and the set value signal h match,
Thereafter, the motor may be stopped by outputting the motor control signal j. Further, the setting of the customer's desired value is not limited to the amount of refueling, but may also be the amount of refueling.Furthermore, it is possible to freely select the amount of refueling and the amount of refueling by providing a changeover switch.

(F) Effect As described above, since the configuration is configured such that the desired lubrication value can be set after starting lubrication, lubrication can be started before the desired value is heard from the customer, and thus, prompt lubrication work is possible. The customer's rotation speed becomes faster during morning and evening lashings.Also, since the limit of the already refueled value at the time of starting the setting is set, the inconvenience that occurs when refueling is started before the desired value is set can be eliminated, and the setting switch can be easily adjusted. Since the setting cannot be changed after a certain period of time has elapsed after setting, a useful oil supply system that does not cause malfunction can be obtained.

[Brief explanation of the drawing]

Figure 1 shows the arrangement of each device at a gas station, Figures 2A and B show the state of the display section when the display contents are changed, and Figure 3 shows the electrical circuit built into the control section. This is shown in the figure. 2... Main unit, 8, 40... Motor,
12...Pump, 16...Flowmeter, 20...Control unit, 34...Nozzle, 38...Hose reel.

Claims (1)

[Claims] 1. An oil supply path in which a pump, a flow meter, a hose, and a nozzle are sequentially connected, and a pulse signal generating means that outputs a number of pulse signals according to the amount of oil measured by the flow meter;
a refueling speed control means for manually controlling the refueling speed; a pulse signal counting means for counting the number of outputs of the pulse signals; and a limit in which an upper limit value of the count value of the pulse signals at which starting of setting of a desired value is permitted is set. The value setting means determines the number of times that the generation of the pulse signal is interrupted or restarted, and the count value at the time of the first interruption or restart does not exceed the upper limit value, and further, the number of times the generation of the pulse signal is interrupted or restarted. a determining means for outputting a number of determination signals corresponding to the number of times, provided that a certain period of time has not elapsed between the time the execution is performed and the next interruption or restart; A storage means for converting into a value and temporarily storing it, a means for displaying the desired value, and a comparison device for comparing the desired value and the lubrication value and outputting a lubrication limit signal when the difference between the two matches a separately determined value. A refueling device comprising: means.