JPS6346398Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a refueling system in which multiple indicators are installed at different positions so that the viewing directions are different for a single refueling system in which a refueling nozzle is connected to the tip of a refueling hose. Regarding improvements.

Conventionally, an example of this type of refueling system is a stationary refueling system installed on an island at a gas station, which allows refueling to be performed and the amount of refueling to be confirmed no matter which side of the island the vehicle is stopped on. To,
Some oil supply systems, in which a fuel nozzle is connected to the tip of a fuel hose, are provided with indicators on the front and rear surfaces of the fuel supply device housing.

On the other hand, conventionally, a display related to one refueling system has been configured to display the refueling amount, refueling amount, and refueling unit price related to the refueling system on the one display according to the customer's request, for example, by switching the changeover switch. There is a system that allows the user to check the amount of refueling, the amount of refueling, and the unit price of refueling without having to provide dedicated displays for the amount of refueling, amount of refueling, and unit price of refueling.

However, in the above-mentioned conventional refueling system, when the changeover switch is operated for the display related to one refueling system, the display related to the first refueling system changes the display content that was previously displayed, e.g. Instead of the amount of refueling, the display content newly displayed by switching the changeover switch, for example, the amount of refueling, will be replaced. Therefore, for example, when refueling is performed by displaying the refueling amount based on the customer's instructions, even if the worker attempts to check the refueling amount during refueling, the operator must operate the changeover switch to obtain the refueling amount that the customer desires. There was a problem in that it could not be confirmed unless the display was turned off and the display changed to the amount of refueling, and the customer's instructions could not be consistently met.

Also, if the previously displayed refueling amount is changed to the refueling amount specified by switching the changeover switch, the previously displayed display content will be erased and the newly specified display content will be displayed as described above. There was a problem in that because they were displayed suddenly, it was easy to doubt whether they were related to each other.

The present invention was developed in view of the shortcomings of the prior art, and is designed so that when a desired display content is selected on one of the multiple displays, the amount of refueling is always displayed on the other display. The purpose of the present invention is to provide a refueling device that achieves the following.

In order to achieve this purpose, the configuration adopted by the present invention is such that a pump and a flow meter are installed in a pipe connected to a tank at one end, and a hose having a refueling nozzle at the tip is connected to the other end of the pipe. In the device, a flow rate transmitter that is installed in the flowmeter and transmits a flow rate signal proportional to the measured flow rate, and a unit price setting device that sets the unit price for refueling, are provided in multiple positions so that the viewing direction is different, and the unit price setter is installed in a plurality of units at different positions so that the amount of refueling is determined. , a display capable of displaying either the refueling unit price or the refueling amount, and the flow rate signal from the flow rate transmitter and the unit price signal from the unit price setting device being inputted to calculate the refueling amount and refueling amount; An arithmetic circuit for displaying information on each display, a switch for selecting a display mode consisting of fuel amount, fuel unit price, and fuel amount for each display, and a switch for selecting one display mode depending on the selection of each switch. It is characterized by comprising a control circuit that displays either the amount of fuel to be supplied, the unit price of fuel, or the amount of fuel to be supplied, and at that time, the other display always displays the amount of fuel to be supplied.

With this configuration, different display modes can be selected for each of the plurality of displays by simply operating a switch, and in this case, the other display that is not selected can always display the amount of refueling.

The present invention will be described below along with embodiments shown in the drawings.

In FIGS. 1 to 3, 1 indicates a housing installed on an island on the premises of a gas station, and the housing 1
As is well known, it is composed of a support frame member having a frame structure, and decorative plates attached to the front, rear, left and right surfaces, and top surface of the support frame member. A fixed pipe 2 having one end connected to a tank is provided in the housing 1, and a pump 4 driven by a motor 3, a flow meter 5 rotating in proportion to the measured flow rate, etc. are installed in the middle of the fixed pipe 2. The flowmeter 5 is equipped with a flow rate transmitter 6 that transmits a flow rate signal proportional to its rotation. A hose 7 is connected to the other end of the fixed pipe 2, and a refueling nozzle 8 is provided at the tip of the hose 7. Reference numeral 9 denotes a nozzle storage section provided on the side surface of the housing 1 for storing the refueling nozzle 8. The nozzle storage section 9 has a nozzle switch 10 that opens when the refueling nozzle 8 is applied and closes when the refueling nozzle 8 is removed. It is provided. Further, two changeover switches 11 and 12 are provided on the side surface of the housing 1 and above the nozzle housing part 9 to switch the display mode by an operation described later. A unit price setting device 13 for setting a unit price is provided, and the unit price can be changed by operating a unit price setting knob. Since there is no need to change the unit price unless the price of gasoline or the like changes, the setting device 13 is normally covered with a decorative board.

On the other hand, cases 14 and 15 having a flameproof and explosion-proof structure are provided at the front and rear positions in the case 1, and each case 14 and 15 has a liquid crystal display, a light emitting diode display, etc. facing the front and rear surfaces of the case 1. indicators 16, 17
(Hereinafter, the display 16 will be referred to as the A display 16, the display 17
In addition to a built-in arithmetic control circuit, display drive circuit, etc., which will be described later, it is connected to a flow rate transmitter 6, a nozzle switch 10, changeover switches 11 and 12, a unit price setting device 13, etc. has been done.

Next, FIG. 4 is an arithmetic control circuit diagram of the present invention, which includes an arithmetic circuit 18, a display mode selection circuit 19, a display signal selection circuit 20, and a display drive circuit 2.
It consists of 1, 22, etc. The arithmetic circuit 18 is connected to the flow rate transmitter 6 and the unit price setting device 13, and counts the flow rate signal inputted from the flow rate transmitter 6 as the amount of oil to be supplied, and also multiplies the unit price of oil inputted from the unit price setting device 13 by the amount of oil to be supplied. and signal lines 23, 24, 25
The refueling amount signal, unit price signal, and amount signal are time-divided and outputted to the display signal selection circuit 20 at the next stage via the 4-digit (2 ⁰ to 2 ³ ) binary signal for each decimal digit. Has a function. In addition, the display mode selection circuit 19
are nozzle switch 10, changeover switches 11, 12
are connected to a, b, c, as shown in FIG.
It has a function of outputting a signal for selecting five types of display modes consisting of d and e to the display signal selection circuit 20 via the signal line 26. Further, the display signal selection circuit 20 selects signal lines 23 and 2 according to each selection signal inputted from the display mode selection circuit 19.
It has a function of selecting each signal input from 4 and 25 as shown in FIG. 7, and outputting it as a display signal to the next stage display drive circuits 21 and 22 via signal lines 27 and 28. Based on the display value scanning signal input from the arithmetic circuit 18, the display drive circuits 21 and 22 apply the display signal selected by the display selection circuit 20 to the display elements (for example, 7 elements) for each digit of the displays 16 and 17. (For characters, seven display elements) are dynamically or statically driven.

Next, FIG. 5 shows a specific configuration of the display mode selection circuit 19, which includes four D-type flip-flop circuits 29, 30, 31, 32 (hereinafter referred to as FF circuits 29, 30, 31, 32). ), OR circuits 33, 34, AND circuits 35, 36, 3
7, 38, knot circuits 39, 40,
Each of the FF circuits 29 to 32 has a reset input R, a clock input CK, a data input D, a set output Q, and a reset output. The nozzle switch 10 is connected to the input sides of the OR circuits 33 and 34, and the switch 11 for selecting the display mode of the A display 16 is connected to the input side of the OR circuit 33 and selects the display mode of the B display 17. The selection switch 12 is connected to the input side of the OR circuit 34. On the other hand, the output side of the OR circuit 33 is the FF circuit 2
Connected to clock input CK of 9 and 30 and
Connected to reset input R of FF circuits 31 and 32,
The output side of the OR circuit 34 is connected to the reset input R of the FF circuits 29 and 30, and the FF circuit 31,
32 clock input CK. Also,
Each set output Q of each FF circuit 29 to 30 is connected to output terminals 41, 42, 43, and 44, the terminal 41 being an output terminal for the unit price signal selection signal of the A display 16, and the output terminal 42 being the output terminal for the A display 16. 16, the output terminal for the amount signal selection signal, and the output terminal 43 is the B display 1.
The unit price signal selection signal output terminal 7 and the output terminal 44 serve as output terminals for the amount signal selection of the B display 17. Furthermore, AND circuits 35 to 3
8. The knot circuits 39 and 40 are connected to each data input D and reset output as shown.

Furthermore, FIG. 6 shows a specific configuration of the display signal selection circuit 20, which includes four input/output control circuits (multiplexers) 45, 46, 47, 4.
Consists of 8. Here, the 1st to 4th digits of the refueling amount signal terminal for time-divisionally outputting the refueling amount signal as a 4-digit binary signal from the arithmetic circuit 18 are X ₀ , Y ₀ ,
Expressed as X ₀ ′, Y ₀ ′, the 1st to 4th digits of the unit price signal terminal are
Expressed as X ₁ , Y ₁ ′, X ₁ ′, Y ₁ ′, 1 of the amount signal terminal
When the ~4 digits are expressed as X ₂ , Y ₂ , X ₂ ′, Y ₂ ′, the input/output control circuits 45 and 47 input the first digit X ₀ ,
It is connected to the signal terminals of X ₁ , X ₂ and the second digit Y ₀ , Y ₁ , Y ₂ , and the input/output control circuits 46 and 48 are connected to the signal terminals of the third digit X ₀ ', X ₁ ', X ₂ ' and the fourth digit. It is connected to the signal terminals of eyes Y ₀ ′, Y ₁ ′, and Y ₂ ′. On the other hand, input/output control circuits 45 and 46 are connected to output terminals 41 and 42 of display mode selection circuit 19, respectively, and input/output control circuits 47 and 48 are connected to output terminals 43 and 44, respectively. Furthermore, the first and second digit output terminals of the input/output control circuits 45 and 47 are connected to X _A , Y _A , X _B ,
Represented as Y _B , input/output control circuit 46, 48, 3
Connect the output terminals of the digit and 4th digit to X _A ′, Y _A ′,
Expressed as X _B ′, Y _B ′, the display drive circuit 21 that drives the A display 16 is connected to each output terminal X _A , Y _A , X _A ′, Y _A ′ via a signal line 27 , The display drive circuit 22 that drives the B display 17 is connected to the signal line 28.
It is connected to each output terminal X _B , Y _B , X _B ′, and Y _B ′ via.

The operation of the stationary oil supply system configured as described above will be explained with reference to explanatory diagrams shown in FIGS. 7 to 9.

When the refueling nozzle 8 is removed from the nozzle housing 9 to perform refueling work, the nozzle switch 10 is closed. As a result, the nozzle signal is input to the reset input R and clock input CK of each FF circuit 29 to 32 in FIG. 5 via the OR circuits 33 and 34, and the reset output only changes from "0" to "1". The set output Q is in the state of "0", and the output terminals 41 to 44
No signal is output from the input/output control circuits 45 to 48 to each of the input/output control circuits 45 to 48. At this time, only the data input D of the FF circuits 29, 31 changes from "0" to "1" because of the NOT circuits 39, 40. Therefore, as shown in FIG.
When the outputs of the output terminals 41 to 44 are "0", the display mode is "e", and as shown in FIG.
Each of the input/output control circuits 45 to 48 of the display signal selection circuit 20 operates so that both the display 16 and the B display 17 display the amount of refueling. That is, as shown in FIG. 9, when the refueling nozzle 8 is removed from the nozzle storage section 10, both the indicators 16 and 17 unconditionally display the amount of refueling.

Here, when the refueling nozzle 8 is inserted into the fuel tank of the vehicle and the valve is opened, the oil in the tank is refueled via the fixed pipe 2, the pump 4, the flow meter 5, and the hose 7, and the oil is supplied from the flow transmitter 6. A flow rate signal proportional to the measured flow rate is output, and the arithmetic circuit 18 counts it as a refueling amount and calculates a monetary amount. The calculation results of the calculation circuit 18 are inputted to the display signal selection circuit 20 as a refueling amount signal, a unit price signal, and an amount signal via the signal lines 23, 24, and 25. Since it is set to operate as "e", only the refueling amount signal is selected. That is, the refueling amount signal terminals X ₀ , Y ₀ , X ₀ ', Y ₀ ' of each digit of the arithmetic circuit 18 are selected by the input/output control circuits 45 to 48, respectively, and are used as indicators for driving the A display 16. For the drive circuit 21, the first digit from the output terminals X _A and Y _A of the input/output control circuit 45,
The second digit oil supply amount signal is output, and the third and fourth digit oil supply amount signals are output from the output terminals X _A ′, Y _A ′ of the input/output control circuit 46 . Similarly, oil supply amount signals for each digit are output to the display drive circuit 22 for driving the B display 17, and each display 16,1
Drive 7. When the desired amount of refueling is reached, the refueling nozzle 8 is closed to complete refueling.

Next, when the changeover switch 11 is pressed once to change the display mode of the A display 16, the nozzle signal is input to the clock input CK of the FF circuits 29 and 30 of the display mode selection circuit 19, and the data input D is input. The FF circuit 29 which is in the state of "1" changes its set output Q from "0" to "1" and outputs the unit price signal selection signal from the output terminal 41 to the input/output control circuits 45 and 46. At this time, the data input D of the FF circuit 29 changes from "1" to "0", and the data input D of the FF circuit 30 changes from "0" to "1".
The FF circuits 31 and 32 do not change because the OR circuit 33 is connected to the reset input R. In this way, when the output terminal 41 of the display mode selection circuit 19 changes from "0" to "1", the display signal selection circuit 20 operates so that the display mode becomes "c" as shown in FIG. As shown in the figure, the A display 16 is operated to display the unit price, and the B display 17 is operated to display the amount of refueling. As a result, the input/output control circuits 45 and 46 of the display signal selection circuit 20 select the unit price signal terminals, X ₁ , Y ₁ , X ₁ ', and Y ₁ ' of the arithmetic circuit 18, and output the output terminals X _A , Y _A , X _A ', Y _A ' are outputted to the display drive circuit 21 to cause the A display 16 to display the unit price. In addition, the input/output control circuits 47 and 48 select the oil supply amount signal terminals X ₀ , Y ₀ , X ₀ ', and Y ₀ ' of the arithmetic circuit 18, and the B
The amount of refueling is displayed on the display 17.

Also, when the changeover switch 11 is pressed for the second time, the display mode selection circuit 19 causes the FF circuit 30 whose data input D is in the state of "1" to change its set output Q from "0" to "1" and output it. The amount signal selection signal is output from the terminal 42 to the input/output control circuits 45 and 46. At this time, the data input D of the FF circuit 29 remains at "0", and the data input D of the FF circuit 30 changes from "1" to "0". In this way, when the output terminal 42 of the display mode selection circuit 19 changes from "0" to "1", the display mode changes to "d" as shown in FIGS. 7 and 8, and the display signal selection circuit 20 changes to A. It operates so that the display 16 displays the amount of money and the B display 17 displays the amount of refueling. As a result, the input/output control circuits 45 and 46 are controlled by the arithmetic circuit 18.
amount signal terminals X ₂ , Y ₂ , X ₂ ′, Y ₂ ′ are selected, and input/output control circuits 47 and 48 select oil supply amount signal terminals X ₀ ,
Select Y ₀ , X ₀ ′, Y ₀ ′.

Furthermore, when the changeover switch 11 is pressed for the third time, the data inputs D of the FF circuits 29 and 30 are both "0", so the set outputs Q are also both "0" and no signals are output from the output terminals 41 and 42. No output,
Display signal selection circuit 20 operates to select display mode "e". Furthermore, when the changeover switch 11 is pressed for the fourth and fifth time, the display mode changes from "c" to "d" to "e" as shown in FIG.
→ “c” → “d” and so on.

On the other hand, when the changeover switch 12 is pressed for the first time to change the display mode of the B display 17, the set output Q of the FF circuit 31 of the display mode selection circuit 19 becomes "1", and the As shown in FIGS. 7 and 8, the display mode becomes "a", and the display signal selection circuit 20 displays the amount of oil on the A display 16,
The unit price is displayed on the display 17. Also, when the changeover switch is pressed for the second time, the set output Q of the FF circuit 32 becomes "1" and the display mode becomes "b", and the A display 16 displays the amount of refueling and the B display 17 displays the amount of money. let In this way, the changeover switch 12
Even when you press , the display mode changes from "a" to "b"
→ “e” → “a” → “b” → and so on.

Furthermore, if the changeover switches 11 and 12 are operated at the same time, or if one of the changeover switches is operated to select a display mode and then the other changeover switch is operated, the FF circuit that outputs the signal from the set output Q by operating one of the changeover switches. By operating another changeover switch, a signal is input to the reset input, the reset output is reset, and the display is switched to the oil supply amount display, so there is no risk of erroneous display.

Further, in the embodiment of the present invention, the display 16,
It is also possible to switch the display itself of the 17 display modes "yen", "l", and "." (decimal point); for example, in the case of the A display 16, the output terminal 41 of the display mode selection circuit 19 ,42
When the output status of either of the output terminals 41 and 42 is "1", the mode display is "circle", and when the output status of both the output terminals 41 and 42 is "0", the mode display is "l" and ".". You can easily deal with it by doing the following.

In the embodiment of the present invention, the arithmetic control circuit includes an arithmetic circuit 18, a display mode selection circuit 19,
Display signal selection circuit 20, display drive circuit 21, 2
Although it has been described as being composed of two components, the present invention is not limited to this, and can be performed by program control using a microcomputer or the like. Further, although it has been described that the display is switched in the order of unit price and amount depending on the number of times the changeover switches 11 and 12 are pressed, this order may be reversed.

The refueling device according to the present invention is as described in detail above, and when the refueling nozzle is used as the refueling device, the amount of refueling is displayed unconditionally on either display, and the amount of refueling is displayed on any display, and the amount of refueling is displayed on either display, depending on the selection operation of the changeover switch. One display displays the refueling amount, refueling unit price, and refueling amount, while the other display always displays the refueling amount, so the refueling amount and refueling amount are displayed based on the customer's instructions. Even when refueling is performed with the unit price displayed, the amount of refueling is always displayed on the other display, so even if the operator tries to check the amount of refueling while refueling, the customer's display will always display the amount of refueling. Since the displayed content can be checked on the other display without having to erase and switch, the customer's instructions can be consistently met, improving work efficiency and customer service. In addition, even if the display on one display is changed from the amount of refueling to the amount of refueling or the unit price of refueling, the amount of refueling continues to be displayed on the other display, making it difficult to understand the relationship between the two displays. reliability is improved.

[Brief explanation of the drawing]

Figure 1 is a front view of a stationary oil supply device according to an embodiment of the present invention, Figure 2 is a right side view of Figure 1, and Figure 3 is similar to Figure 1 with the decorative panel removed. A front view, FIG. 4 is an arithmetic control circuit diagram used in the present invention, FIG. 5 is a display mode selection circuit diagram in FIG. 4, FIG. 6 is a display signal selection circuit diagram in FIG. 5, and FIGS. FIG. 9 shows operation explanatory diagrams. 1... Housing, 2... Fixed piping, 4... Pump,
5... Flow meter, 6... Flow rate transmitter, 7... Hose, 8... Refueling nozzle, 10... Nozzle switch, 11, 12... Changeover switch, 13... Unit price setting device, 16, 17... Display device, 18... Arithmetic circuit, 19... Display mode selection circuit, 20... Display signal selection circuit, 21, 22... Display drive circuit.

Claims (1)

[Scope of utility model registration request] In a refueling device in which a pump and a flow meter are installed in a pipe connected to a tank at one end, and a hose having a refueling nozzle at the tip is connected to the other end of the pipe, the flow meter is provided with a pump and a flow meter connected to a hose having a refueling nozzle at its tip. A flow rate transmitter that transmits a flow rate signal and a unit price setting device that sets a refueling unit price are installed in multiple locations so that they can be viewed in different directions, and can display either the refueling amount, refueling unit price, or refueling amount. a display device, a calculation circuit that calculates a refueling amount and a refueling amount by inputting a flow rate signal from the flow rate transmitter and a unit price signal from the unit price setting device, and displays the results on each of the display devices; and each of the display devices. There is a switch that selects the display mode consisting of the refueling amount, refueling unit price, and refueling amount. Depending on the selection of each switch, either the refueling amount, refueling unit price, or refueling amount is displayed on one display. ,
A refueling device comprising a control circuit that always displays the amount of refueling on the other display.