JPH0232637Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Application The present application relates to a refueling device used when refueling a car at a refueling station.

(b) Prior Art A device is used at a gas station that automatically stops refueling when the refueling value reaches the amount or price desired by the customer.

Such devices have various desired setting methods, and as shown in Japanese Patent Laid-Open No. 58-64997, each device has a key that represents a unique setting value (for example, 10, 15, 20, 25, ... liters, etc.). Lined up (A method),
As seen in Japanese Patent Application Laid-open No. 57-163697, a desired value is set by matching the numerical values using a so-called numeric keypad (method B), and as seen in Japanese Patent Application Laid-Open No. 59-195715, a desired value is set by matching the numerical values. One in which the set value is changed sequentially (C method), as seen in Japanese Patent Application No. 1988-288684, the oil flow rate is changed by manually opening and closing the built-in valve of the oil supply nozzle, and the set value is determined from the number of changes. (method D), etc., and are selected and adopted depending on the preferences and ideas of consumers.

(C) Problems Compared to methods A and B, method C has fewer keys and is therefore smaller, and method D has the advantage that no keys are required. A larger value is set each time the change operation is performed, and the setting values are arranged in a loop so that the maximum setting value is followed by zero or the minimum setting value, so once the desired value is exceeded, Once the settings have been set, it is necessary to go through this loop once in order to restore the settings, which is problematic.

(D) Structure and operation This application is proposed in connection with the above-mentioned methods C and D, and includes an oil flow path in which a pump, a flow meter, a hose, and a nozzle are connected in sequence, and different setting values are determined for each. a lubrication value setting means which has a plurality of steps, and changes to the setting value of the next step each time a set value change operation by changing the flow rate is performed; and a display that displays the set value as the scheduled lubrication value. means and
In a device equipped with comparison means for comparing a refueling value and a scheduled refueling value and outputting a refueling stop signal when the two values match, a set value return step is provided between the lowest step and the highest step. and determining means for monitoring the settings in the setting means and outputting a return-to-zero signal to the setting means when the contents of the return-to-zero step continue to be set for a predetermined time to the setting means. If the setting is changed beyond the desired value during the setting value change operation, if the setting is stopped for a predetermined time at the zero return step provided in the middle, the setting step will be stopped. Return to the original state (state before starting the setting) without completing the loop.

(e) Example An example in which the method D described above is adopted will be shown below.

In Fig. 1, there are two oil supply devices, and although not shown, a measuring unit 4 housing a pump and a flow meter, and a display unit 6 housing a display and other electric circuits to be described later are separated from each other by a safe distance a (for example, 60 cm).
are installed apart from each other.

10 is a nozzle case in which the nozzle 12 is stored when not in use, 14 is a hose whose one end is connected to the nozzle 12 and the other end is connected to a conduit (not shown) that connects to the flow meter in the metering unit 4, and 16 is a refueling hose. quantity indicator,
Reference numeral 18 indicates a set value display that displays the set desired amount; 20 indicates a printer that issues a slip 22 on which refueling information including the refueling amount is printed after refueling is completed;
4 is a step stool 26 which is pulled out so as to be stored in the weighing unit 4 and is used when cutting out the slip 22, etc.;
is a pipe-shaped support supporting the display unit 6, the upper and lower ends of which are sealed, and a signal line 28 between the display unit 6 and the weighing unit 4 is inserted.

In FIG. 2, 30 is a pulse transmitter that outputs one flow rate pulse signal p every time a flow meter (not shown) measures a unit oil amount (for example, 1/100 liter), and 32 is a pulse generator that counts the number of pulse signals p. a counting circuit 34 that outputs the counted value as a counted value signal l;
is arranged in relation to the nozzle case 10, and the nozzle 12
is housed in the case 10, its output signal, the nozzle detection signal n, is in the L (low) state,
36 is a control circuit for a motor 38 that rotates a pump (not shown) when the nozzle detection signal n is in the H state and stops it when it is in the L state; Steps and setting values corresponding to each step (for example, 1st step = 10 liters, 2nd step = 10 liters,
42 is a clock signal generation circuit that outputs a clock signal c every unit time (for example, every 1/1000 seconds), and 44 is a pulse signal. a determination circuit that monitors the output interval of p and outputs a determination signal b (one pulse) each time it determines and confirms that the built-in valve of the nozzle 12 is opened or closed and the flow velocity of the oil is changed according to predetermined conditions;
46 is a setting circuit for setting a setting value corresponding to the step according to the number of inputs of signal b and outputting the setting value as setting value signal k; 48 is for comparing setting value signal k and count value signal l; A comparison circuit 50 outputs a refueling stop signal s when the two match, and a comparison circuit 50 monitors a set value signal k, and the signal k is a signal that means the return to zero of the setting circuit 46, and this signal is maintained for a predetermined period of time (for example, A determination circuit 52 outputs a return zero signal j (one pulse) when it is determined that the output has continued for more than 1 second), and 52 is a determination circuit that outputs a return signal j (one pulse) when the nozzle detection signal n changes from the H state to the L state. This is a printer drive circuit that causes the printer 20 to print the contents.

In the above configuration, the nozzle 12 is connected to the case 10.
When removed from the nozzle, the nozzle detection signal n changes from the L state to the H state.
As a result, the control circuit 36 rotates the motor 38, and on the other hand, the count value of the counting circuit 32 (the amount of refueling at the time of previous refueling) is returned to zero, and the display 16 shows zero.

Next, when the built-in valve of the nozzle 12 is opened to start refueling, the pulse signal P of the number corresponding to the amount of oil measured by the flow meter is output from the pulse transmitter 30, counted by the counting circuit 32, and the counted value is the amount of oil supplied. It is displayed on the display 16.

After starting refueling, each time the nozzle's built-in valve is closed and then opened (setting value changing operation), the setting circuit 46 performs the following based on the judgment signal b output from the judgment circuit 44 as described above. . As mentioned above, the memory circuit 40 stores set values (amounts) corresponding to each step, such as 10, 15, etc.
20, 25, 30, then 0, then 35, 40, 45, 50 (little) (After 50, the setting returns to no setting, and then 10, so the setting values are looped)
is determined, and when no judgment signal b has been input yet, no set value for any step has been set in the setting circuit 46, and each time signal b is input one, then one, and so on. The values corresponding to the lower steps are set to 10, 15 (liters), etc. in order, and the set values are output to the comparison circuit 48, judgment circuit 50, and set value display 18, and are displayed as set values. .

If the desired amount is 25 liters, it is sufficient to repeat the setting value changing operation four times, and at this time, 25 liters will be displayed on the display 18.

After that, when the refueling progresses further and the count value of the counting circuit 32 matches the set value of the setting circuit 46, that is, when the refueling amount reaches 25 liters, the comparison circuit 46
8 outputs a refueling stop signal s and applies it to the control circuit 36, deenergizing the motor 38 and stopping the pump.

When the nozzle 12 is returned to the case 10 after refueling, the nozzle detection signal n from the switch 34 changes from the H state to the L state, and at this time, the setting value of the setting circuit 46 is returned to zero.
Print out refueling information including the amount of refueling.

The above is a series of operations.
If you accidentally set 30 liters over 25 liters when setting the liter (at this time, the display 18 is in the display state shown in Figure 3A), in the case of the conventional method, 35, 40, I had to cycle through 45, 50, no setting, 10, 15, 20, 25 liters.

However, in this embodiment, the set value is advanced to 0 liters, which is the next step after 30 liters (display 18
(returns to the state shown in FIG. 3C) When this state is maintained for the predetermined time (1 second), the determination circuit 50 outputs a return to zero signal j, and the set value of the setting circuit 46 returns to the unset state. . At this time, the display on the display 18 changes from zero display to no display (the state shown in FIG. 3B), indicating that the set value of the setting circuit 6 has become unset.

Then, you can repeat the setting operation to reach 25 liters.

If you want to set the amount to 35 liters or more, you can proceed to the next step by continuing the setting operation without maintaining the 0 liter display state for more than 1 second.

Note that a timing limit is set for setting this desired amount; for example, the setting circuit 46 receives the count value signal l.
By monitoring the value of , if the counted value of the counting circuit 32 exceeds 5 liters, the set value cannot be changed, and the built-in valve of the nozzle 12 opens and closes when the fuel tank of the car is almost full. I try not to confuse the operation and the setting value change operation.

Although the configuration is as described above, it can be applied not only to the method in which the set value is changed by changing the oil flow velocity, but also to the above-mentioned method C, and it is also easy to change the set value based on the amount rather than the amount. be.

(f) Effect As described above, in a device where the set value can only be changed in one direction, a step is provided in the middle to return the set value to zero, and only when this step is stopped for a certain period of time, the process is continued until the final step. Since it is possible to return to the initial state without reaching the final state, the set value can be quickly corrected if the set value is accidentally set beyond the desired value.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the external appearance of the oil supply device, FIG. 2 is a block diagram showing the electric circuit for controlling the oil supply device, and FIGS. 3A to 3C are diagrams each showing the display contents of the setting display. 4...Measuring unit, 6...Display unit, 8
...Common base, 16...Refueling amount indicator, 18...
...Set value display, 20...Printer, 22...
Slip, 24...step stool, 26...post.

Claims (1)

[Scope of utility model registration request] It has an oil flow path that sequentially connects a pump, a flow meter, a hose, and a nozzle, and multiple steps with different set values for each. A lubrication value setting means that changes to the set value of the next step, a display means that displays the set value as the scheduled lubrication value, and a comparison between the lubrication value and the scheduled lubrication value, and stops the lubrication when the two values match. In the apparatus, a step for returning to set value to zero is provided between the lowest step and the highest step, and the set value is monitored by the setting means and the set value is returned to zero by the setting means. A refueling device equipped with a determination means for outputting a return-to-zero signal when the content of a step continues to be set for a predetermined time period and giving it to a setting means.