JPS62251394A - Lubricating device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refueling device that is equipped with one or more weighing machines and a vending machine, and is capable of preset refueling where preset control is performed on the vending machine side.

[Prior art]

In general, this type of oil supply device has one end installed in the middle of piping, and includes a pump that starts and stops feeding liquid using a pump motor, a flow meter that measures the amount of oil fed by the pump, and a flow meter that measures the amount of oil fed by the pump. A display device that displays the amount of refueling measured by a meter, a refueling nozzle that is connected to the other end of the pipe via a hose and discharges oil into the fuel tank of the vehicle, and the start and end of refueling work using the refueling nozzle. Nozzle switch to detect (for fixed weighing machines), lift switch or cam switch for detecting lift (for suspended weighing machines)
It has a measuring machine equipped with a refueling work detecting means such as the above, and is connected to the measuring machine via a signal line, and has a function of calculating a measuring signal based on the measurement result of the flowmeter as a refueling amount, and a function of calculating a measuring signal as the refueling amount at the time of preset refueling. It has a sales control machine that has a function of setting a desired preset value and outputting a refueling stop signal when the amount of refueling reaches a predetermined value. It is configured to stop the operation of a pump motor attached to the pump or a liquid feeding means such as a solenoid valve provided in the middle of the piping as necessary.

The timing of stopping the drive of the pump motor, closing the solenoid valve, etc. during preset lubrication takes into consideration the overflow amount, and in order to do so at a predetermined value slightly before the preset value, the lubrication stop signal is set at the preset value. It is designed to be output.

At this time, even if the same weighing machine is used, the actual amount of overflow may vary by a minute amount within the range of measurement tolerance (instrumental error) due to changes in the refueling environment based on temperature, viscosity, etc.
On the sales management machine side, when the actual amount of oil supplied and the preset value are within the measurement tolerance range, the actual amount of oil supplied is assumed to be equal to the preset value and a refueling slip is issued.

[Problem that the invention seeks to solve]

However, in the conventional technology described above, the measuring machine displays the actual amount of refueling measured by the flowmeter on the display, and the sales management machine calculates and displays the amount of refueling based on the measurement signal from the weighing machine. At the same time, if the actual amount of oil supplied is within the measurement allowable error with respect to the preset value, the preset value is printed on the oil supply slip as the amount of oil supplied.

As a result, the value displayed on the weighing machine and the refueling amount value on the refueling slip may differ, giving rise to a problem of giving the customer a sense of distrust.

The present invention was made to improve such problems.
When the current refueling operation is determined to be preset refueling,
To provide a fueling device which eliminates distrust towards customers by displaying the same value as a preset value on a display on a weighing machine side.

[Means for solving problems]

In order to solve the above problems, the feature of the configuration adopted by the present invention is that the weighing machine side monitors the input of the refueling work end signal from the refueling work detection means and the refueling stop signal from the sales management machine. , a preset lubrication determining means that determines that the current refueling is preset lubrication when the refueling stop signal is input first; and a preset value is predicted based on the amount of lubrication measured by the measuring means when the determining means determines that the current lubrication is preset lubrication. A preset value predicting means is provided between the measuring means and the display means, and when the preset refueling discriminating means determines that preset refueling has been performed, the display value of the display means is incremented to the preset value predicted by the predicting means. , and display control means for maintaining the preset value.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a case in which the oil supply system of the present invention is applied to a fixed type oil supply system will be described in detail based on an embodiment shown in the drawings.

Fig. 1 shows an overall configuration diagram of the fuel supply system used in this embodiment. A pump 4 driven by a pump motor 3 and a flow meter 5 are installed in the middle of the piping 2.
is equipped with a flow rate pulse transmitter 6 that transmits a flow rate pulse proportional to the flow rate. Further, on the front side of the meter 1, there is provided a refueling amount display 7 that displays the cumulative amount of refueling.

8 is a hose whose base end is connected to the piping 2, and 9 is a refueling nozzle provided at the distal end of the hose 8, so that when the refueling nozzle 9 is opened, oil can be discharged into the fuel tank. It has become. Reference numeral 10 denotes a nozzle storage section provided on the side surface of the weighing machine 1, and the refueling nozzle 9 is placed in the nozzle storage section 10.
The nozzle switch 11 is provided in the nozzle storage portion 10 to open and close in conjunction with the unlatching of the refueling nozzle 9. When the nozzle switch 11 is closed, it indicates that refueling work is in progress. Output a signal.

Reference numeral 12 denotes a vending machine, usually called "PO5", which is installed in a gas station office or an outdoor office box. Set,
Or a numeric keypad 14 for entering the price when selling a product, a product key 15 for specifying the product name when supplying oil other than gasoline, air supply, tire replacement, etc., a weighing machine selection key for specifying it when there are multiple ff1al units in total. 16. Printer 1 that issues a receipt after refueling or after selling a product
7, a display 18, etc., the weighing machine 1
and is connected via a signal line 19. Here, the sales management machine 12 has a numeric keypad 14 at the time of preset refueling.
A function to preset the amount of refueling by operating the card reader 13, or by operating the weighing machine selection key 16, sends a refueling start permission signal to the weighing machine 1 when the refueling permission signal rises from "L" to the rHJ state. The function is to output the refueling permission signal in the "H" state until the refueling stop signal is output, and the function is to output the refueling permission signal in the "H" state until the refueling stop signal is output. In consideration of overflow, there is a function that outputs a refueling stop signal when the refueling permission signal falls to the "L" state when it reaches a predetermined value slightly before the preset value, and a function that outputs a refueling stop signal when the refueling permission signal falls to the "L" state, and a function that outputs a refueling stop signal when the refueling permission signal falls to the "L" state during normal refueling. In addition to the function of stopping the output of the refueling permission signal based on the refueling work completion signal obtained by descending, and outputting the refueling stop signal when the signal falls, and the function of calculating the measuring signal from the weighing machine l as the refueling amount. , sales aggregation function, printer function, etc. The configuration, functions, etc. of the sales management machine 12 are conventionally known.

Furthermore, FIG. 2 shows a specific configuration of the control circuit 20 used in this embodiment, and the control circuit 20 is built in the meter 4111. The control circuit 20 includes an input/output circuit 21, a refueling amount counting circuit 22. It is comprised of a preset refueling discrimination circuit 23, a preset value prediction circuit 24, a display control circuit 25, a pump motor control circuit 26, and the like.

Here, the input/output circuit 21 includes a nozzle switch signal output circuit 21A that outputs a nozzle switch signal from the nozzle switch 11 to the sales management machine 12, and a metering signal output circuit 21A that outputs a measurement signal from the refueling amount counting circuit 22 to the sales management machine 12. It is comprised of a signal output circuit 21B and a refueling permission signal input circuit 21C into which a refueling permission signal from the vending machine 12 is input.

The refueling amount counting circuit 22 counts the flow N pulses from the flow rate pulse transmitter 6 as the refueling amount to determine the preset refueling determination circuit 2.
3. Output to the preset value prediction circuit 24 and display control circuit 25, and output the measurement signal to the measurement signal output circuit 21B.

The preset refueling discrimination circuit 23 receives the nozzle switch signal from the nozzle switch 11 and the refueling permission signal from the sales management machine 12, and the refueling stop signal obtained by the fall of the refueling permission signal is input first. At this time, the current refueling is determined to be preset refueling, and a display control instruction signal is output to the preset value prediction circuit 24 and the display control circuit 25. Note that the discrimination circuit 23 discriminates whether or not the preset oil supply has been performed by the processing operation shown in FIG.

When the display control instruction signal is input from the preset refueling discrimination circuit 23, the preset value prediction circuit 24 reads the refueling amount counted by the refueling amount counting circuit 22, and predicts the preset value set in the sales management machine 12. Then, the predicted preset value is output to the display control circuit 25. Note that the prediction circuit 24 sets the prediction preset value by the processing operation shown in FIG.

Furthermore, the display control circuit 25 has a function of resetting the previous display value to zero when the nozzle switch signal rises to the rHJ state at the time of next refueling.

During normal refueling or preset refueling, the refueling amount signal from the refueling amount counting circuit 22 is sent to the refueling amount display 7 via the display drive circuit 27 until the display control instruction signal is input from the preset refueling discrimination circuit 23. When the display control instruction signal is input, the display value of the refueling amount display 7 is advanced to the predicted preset value input from the preset value prediction circuit 24, or the display value is maintained at the preset value. It also has the function of encouraging.

Note that the display control circuit 25 executes each of the above functions by the processing operations shown in FIG.

Further, the pump motor control circuit 26 controls the start and stop of the pump motor 3 via the pump motor drive circuit 28 , that is, the input of the refueling permission signal from the vending machine 12 and the nozzle switch signal from the nozzle switch 11 . The pump motor 3 is operated under the AND condition. Therefore, during preset lubrication, the pump motor 3 stops when the sales management 4112 outputs the lubrication stop signal.

The present embodiment is constructed as described above, and its operation will now be described with reference to FIGS. 3 to 5.

First, the operation during normal refueling will be described.

In this case, insert the card of the customer who needs to refuel (in the case of a general customer, the gas station card) into the card reader 13 of the vending machine 12, and if there are multiple weighing machines, press the weighing machine selection key 16. Press down. As a result, sales management@1
2 outputs a refueling permission signal, and the pump motor control circuit 26 is placed in a startable state.

Next, when the refueling nozzle 9 is removed from the nozzle housing 10 in order to refuel the fuel tank of the vehicle, the nozzle switch 11 closes and outputs a nozzle switch signal. As a result, the nozzle switch signal is input to the pump motor control circuit 26, and a motor drive signal is output from the pump motor drive circuit 28 to the pump motor 3 via the control circuit 26 to start it. In addition, the oil supply amount indicator 7 is displayed by the nozzle switch signal.
The previous displayed value will be reset.

Then, when one worker opens the oil supply nozzle 9, the oil in the underground tank is discharged from the oil supply nozzle 9 via the pipe 2, pump 4, flow meter 5, and hose 8. The flow rate at this time is measured by the flowmeter 5, and a flow rate pulse is transmitted from the flow rate pulse transmitter 6 and inputted to the refueling amount counting circuit 22. As a result, the oil supply amount counting circuit 22 counts the flow rate pulses, and the display control circuit 25 and the display drive circuit 2
A count signal is sent to the oil supply amount display 7 via the oil supply IQ.
is displayed as a display value, and the flow rate pulse is converted into a measurement signal, and this measurement signal is output to the sales management machine 12, which calculates the measurement signal as the amount of oil to be supplied.

During this time, the preset refueling determination circuit 23
2, the preset refueling determination circuit 23 waits to see if a refueling stop signal is input from step 2, but in normal refueling, this refueling stop signal is not input during refueling, so the preset refueling discrimination circuit 23 performs the step shown in FIG. Furthermore, since the preset value prediction circuit 24 does not receive the display control instruction signal from the preset refueling determination circuit 23, the wait loop of step S20 in FIG. 4 is executed. I'm just doing it. Furthermore, display control circuit 2
5, the display control instruction signal is not input, so steps S30 to S35 in FIG. 5 are executed, and the oil supply amount display 7 simply displays the oil supply amount Q as a display value.

In this state, when the refueling progresses and reaches the desired refueling amount Q, the refueling nozzle 9 is closed, and the refueling nozzle 9 is hung in the nozzle storage portion 10. For this reason, the nozzle switch 11 is opened and the output of the nozzle switch signal is stopped, and this falling state is used as a refueling work end signal to the pump motor control circuit 26.
, is input into the sales management machine 12. Thus, sales management f
From i12, the output of the refueling permission signal is stopped, and the output of the motor drive signal from the pump motor control circuit 26 is also stopped.
A series of refueling operations is completed. Finally, the operator only needs to hand over the refueling slip issued by the printer 17 of the sales management machine 12 to the customer.

Next, the operation during preset oil supply will be described.

In this case, before or after inserting the card into the card reader 13 of the sales management Ja 12, operate the numeric keypad 14 to preset the desired refueling amount or price desired by the customer, and set the preset value. make me remember.

Next, as in the case of normal refueling, the refueling nozzle 9 is removed from the nozzle housing 10, inserted into the fuel tank, and opened. At this time, the lever of the refueling nozzle 9 is hooked to the hook to maintain the valve open state.

When the refueling progresses and the refueling IkQ reaches a predetermined value slightly before the desired preset value, the output of the refueling permission signal from the vending machine 12 is stopped. The falling state of this refueling permission signal becomes a refueling stop signal, and the refueling stop signal is input to the pump motor control circuit 26 and the preset refueling determination circuit 23. Then, by inputting the oil supply stop signal to the pump motor control circuit 26, the output of the motor drive signal is stopped +LL, and the pump motor 3 is stopped after a slight inertial rotation. Therefore, even if the oil supply nozzle 9 is in an open state, the discharge of oil stops, and preset oil supply is performed at the desired preset value.

Furthermore, when the operator visually confirms that the display on the refueling amount indicator 7 has stopped, the operator closes the refueling nozzle 9 and hangs it on the nozzle housing IO, thereby completing the series of preset refueling. Finally, the worker
What is necessary is to hand over the refueling slip issued from the printer 17 to the customer.

However, as described above, when the value printed on the refueling slip issued by the sales management machine 12 and the value displayed on the refueling amount display 7 do not match, the customer feels distrustful.

Therefore, below is the operation to match these two values.
That is, when the preset value and the actual oil supply amount are within the measurement tolerance range, the operation for displaying and controlling the display value of the oil supply amount display 7 as the preset value will be described.

First, the preset refueling determination circuit 23 performs an operation of determining whether or not preset refueling is performed by the processing operation shown in FIG. The process proceeds to Sll, and it is compared whether the nozzle switch 11 is closed and a nozzle switch signal is input. If the nozzle switch signal is not input, the refueling stop signal is sent to move the refueling nozzle 9 to the nozzle housing 10. It is determined that this is the refueling work end signal when normal refueling is completed, and the process ends. On the other hand, if the nozzle switch signal is input in step Sll, the refueling stop signal is determined to be a fixed amount stop signal due to preset refueling, and in the next step 312, the preset value prediction circuit 24 and the display control circuit 25 respectively display the refueling stop signal. Outputs a control instruction signal. Then, this display control instruction signal is canceled when the output of the nozzle switch signal is stopped, and preparation is made for the next refueling operation (see step Sll-S13, 516).

In addition, steps 313 to S16 in FIG. 3 are performed by repeating starting and stopping of the pump motor several times in the middle when supplying the preset value, as shown in, for example, Japanese Unexamined Patent Publication No. 56-142197. method (hereinafter, such a preset lubrication method is referred to as the "intermediate stop method")
This is an escape loop in the case of ). That is, after the refueling stop signal is input and the display control instruction signal is output, when the refueling permission signal is input again after a certain period of time with the nozzle switch signal still being input (step 314), the preset refueling is performed. The 1-display control finger no-signal is canceled as if it has been restarted (step 315).
).

Next, when the display control instruction signal is input from the preset refueling determination circuit 23 to the preset value prediction circuit 24, the prediction circuit 24 predicts the predicted preset value P by the process shown in the fourth VIJ. That is, when the display control instruction signal is input in step S20, the oil supply amount Q is read out from the oil supply amount counting circuit 22 (step 521), and the true preset value set in the sales management a12 is predictively set (step 522).
, and outputs this value to the display control circuit 25. in particular,
If the refueling amount Q is 29.971, the predicted preset value P is 30M, and if the refueling amount Q is 25.02, the predicted preset value P is 25! Prediction is made using a value such as L that excludes minute amounts within the measurement tolerance range. Then, when the input of the display control instruction signal from the preset refueling determination circuit 23 is canceled (see steps 816 and 515 in FIG. 3), the setting of the predicted preset value P is canceled (step S
23°, 524).

Furthermore, when a display control instruction signal is input from the preset refueling determination circuit 23 to the display control circuit 25, the display control circuit 25 performs the process shown in FIG. In other words, when the display control instruction signal is input in step S32, the display control circuit 25 reads out the predicted preset value P from the preset value prediction circuit 24 (step 536).
). Then, in the next step S37, the oil supply amount display 7
If the displayed value is less than the predicted preset value P,
Stepwise control is performed so that the two match, and conversely, if the count signal (flow rate pulse) is still being input from the refueling amount counting circuit 22, the step of the displayed value due to the count signal is prevented. The display value is held and controlled to match the predicted preset value P. In this way, the input of the display control instruction signal is not canceled while the coincidence control is being executed (step 53).
8), and when the input of the nozzle switch signal stops (step 539), it means that the current preset oiling operation has been completed, and the display control ends.

Note that when the input of the display control instruction signal is canceled while the nozzle switch signal is input and the process moves to step S40, it is determined that preset lubrication is performed using the intermediate stop method, and the pump motor 3 is repeatedly stopped in the middle. In order to prevent a cumulative discrepancy between the actual oil supply amount Q and the displayed value within the measurement tolerance range, steps 540 to S43 are performed each time refueling is restarted, and the relevant oil supply amount Q is
When the value and the displayed value match, the process moves to step S34.
Restarts display of refueling amount Q.

As described above, according to this embodiment, display control can be performed to match the display value of the refueling amount display 7 with the preset value in accordance with the slip issuing process performed on the sales management machine 12 side. It can increase customer trust.

In the embodiment of the present invention, the liquid feeding means for starting and stopping the liquid feeding is described as being composed of the pump motor 3 and the pump 4, but it may also be constituted by a solenoid valve installed in the middle of the piping 2. Although a fixed weighing machine is taken as an example of the measuring machine, it may be a suspended measuring machine in which the fuel nozzle is suspended from a high place in a gas station via a hose so that it can be raised and lowered. In this case, the refueling operation detection means is the nozzle switch 1.
1, a nozzle lift switch, a lift detection cam switch, etc. may be used to detect between the refueling position and the standby position. Further, the set value at the time of preset refueling is not limited to the amount of refueling, but may also be the amount of refueling.

〔Effect of the invention〕

The refueling device according to the present invention is as described in detail above, and even if the refueling device is of the type in which a preset value is set on the sales management machine side, the preset value is predicted and displayed on the display device at the time of preset refueling. Since the displayed value can be made to match the preset value, it is possible to eliminate discrepancies between the actual amount of refueling and the refueling slip, thereby increasing the relationship of trust with the customer.

[Brief explanation of drawings]

Figure 1 is an overall configuration diagram of the refueling device, Figure 2 is a circuit diagram of the control circuit, Figure 3 is a flowchart showing the processing operation of the preset refueling discrimination circuit, and Figure 4 is the processing operation of the preset value prediction circuit. Flowchart FIG. 5 is a flowchart showing the processing operation of the display control circuit. DESCRIPTION OF SYMBOLS 1...Measuring device, 2...Piping, 3...Pump motor, 4...Pump, 5...Flow meter, 7...Oil supply amount indicator, 8...Hose, 9... ...Refueling nozzle, 11...
・Nozzle switch, 12... Sales management machine, 19...
Signal line, 20... Control circuit, 22... Refueling amount counting circuit, 23... Preset refueling determination circuit, 24... Preset value prediction circuit. 25...Display control circuit.

Claims (1)

[Claims] A liquid feeding means for starting and stopping liquid feeding, a measuring means for measuring the amount of oil supplied by the liquid feeding means, a display means for displaying the amount of oil supplied measured by the measuring means, and the liquid feeding means. The measuring machine includes a discharging means for discharging the oil liquid sent by the discharging means, and a refueling operation detecting means for detecting the start and end of refueling operation by the discharging means, and a measuring machine that is connected to the measuring machine via a signal line. and a function of calculating a measurement signal based on the measurement result of the measuring means as the amount of oil to be supplied, and a function of setting a desired preset value during preset lubrication and outputting a lubrication stop signal when the amount of oil to be supplied reaches a predetermined value. In the refueling device, the liquid supply device is provided with a vending machine equipped with a refueling device, and the liquid feeding means is stopped by a refueling stop signal from the vending machine during preset refueling. a preset refueling determination means that monitors the input of the refueling work end signal and the refueling stop signal from the sales management machine, and determines that the current refueling is preset refueling when the refueling stop signal is input earlier; A preset value prediction means for predicting a preset value based on the amount of oil supplied by the measuring means when determining preset lubrication, and a preset value prediction means provided between the measuring means and the display means, the preset value prediction means predicting a preset value when the preset lubrication discriminating means determines that preset lubrication has occurred. A refueling device characterized by further comprising a display control means that sometimes advances the display value of the display means to a preset value predicted by the prediction means and maintains the display value at the preset value.