JPH03315B2 - - 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 When performing refueling work, the value to be refueled (refueling amount or refueling amount) is set in advance as a set value, and when the refueling value reaches the set value, refueling is automatically performed. A fixed-quantity stop lubrication system is used, and setting values are set using a so-called numeric keypad method, a method with a number of keys arranged in a row each with a unique value, and other methods.
60−70594 with a single switch and one
Some types include a display that changes the set value each time the device is operated, and the method is selected depending on preference, operability, or price.

(c) Problems The last of the above methods is advantageous in order to reduce production costs, but in this case, the number of times the switch must be operated increases, resulting in a significantly shortened lifespan of the switch. It was happening.

(D) Configuration The present invention includes a flow rate pulse signal generating means, a means for counting the flow rate pulse signal, a switch for outputting a return signal for returning the counted value to zero, a means for outputting a setting signal, and a plurality of settings. When the value is stored and a zero signal is generated, switching output of set value display signals indicating each set value is started at fixed time intervals, and set value display signals having values smaller than the counted value are thinned out and outputted, and the set value display signals are thinned out and outputted. A set value control means that stops switching to the next set value display signal when the signal is input, and simultaneously outputs a set value corresponding to the set value display signal that is being output at that time as a set value signal, and a comparison means. is the main component.

(e) Operation With the above configuration, the set value display is switched at fixed time intervals at the same time as the zero return signal is generated, and the set value display smaller than the value (counted value) that has already been refueled is thinned out and the set value display is sequentially thinned out. By operating the setting switch to generate a setting signal while the desired value is displayed, the value displayed at that time is fixed as the set value.

Thereafter, when the difference between the counted value and the set value reaches a predetermined value, a refueling stop signal is output from the comparing means and refueling is terminated.

(F) Embodiment In FIG. 1, 2 is a lubricating device, which is composed of measuring units 6, 6', 6'' installed on a common base 4 and a display unit 8. ' and 6'' have the same structure, but differ only in the type of oil they handle, and the order in which they are lined up can be changed or additions or deletions can be made freely as necessary.
Note that there is only one display unit regardless of the number of measuring units, but when multiple measuring units share one display unit, there is a display to specify the type of oil in use, which is required when one display unit is shared by multiple measuring units, and a As many systems have already been introduced, the explanation will be omitted, and for the sake of convenience, only the relationship between the weighing unit 6 and the display unit 8 will be explained below.

The weighing unit 6 is driven by a motor 10,
A pump 12 that pumps up oil, a pulse transmitter 16 that outputs a number of flow rate pulse signals a corresponding to the amount of oil measured by a flow meter 14, and a nozzle 20 connected to the tip of a hose 18 that is housed when not refueling. The nozzle signal b, which is arranged in relation to the case 22 and is output when the nozzle 20 is stored, is L (low).
and a nozzle detection switch 24 which indicates the H (high) state when the nozzle is in the state and removed.

The display unit 8 includes an oil type indicator 26, an oil supply level indicator 28, a set value indicator 30 equipped with lamps _L1 to _L7 corresponding to the displayed numerical values, and a control section 31 housing various electric circuits to be described later. It consists of

Reference numeral 32 denotes a setting switch (setting signal generating means) which outputs a setting signal c (one pulse) when operated.

In FIG. 3, 40 is a counting circuit that counts the number of flow rate pulse signals a, outputs the counting result as a refueling value signal d, and displays the numerical value as the refueling amount on the refueling amount display 28; and 42, a nozzle signal b is H. a motor control circuit for energizing the motor 10 while 4;
4 is a clock signal generation circuit that outputs one clock signal e at regular intervals (for example, every 1/10 second);
46 measures time by counting the clock signal e, outputs a set value display signal f of a different value sequentially at fixed time intervals (for example, every second), and displays the value of the signal f on the set value display 30. A set value control circuit (which lights and displays lamps L ₁ to L ₇ corresponding to the corresponding numerical values and outputs the same value as the value of the signal f output at that time when the setting signal c is inputted as the set value signal h) set value control means), and the set value display 30 shows "none", "10", "20", and "30".
,
Lamps L ₁ to L ₇ provided corresponding to the display of "40", "50", and "60" (liters) are switched and displayed in sequence, and after lamp L7, it returns to the original state and L ₁ is switched and lit. Thereafter, the switching lighting is repeated in the same manner.

48 is a comparison circuit that compares the refueling value signal d and the set value signal h and outputs a refueling stop signal i when the difference between the two values reaches a predetermined value.
The reason for outputting the refueling stop signal i before the refueling value reaches the set value is because a small amount of oil is discharged between the moment the refueling stop signal i is output and the time when refueling is actually stopped, and this discharged amount is pre-determined. This is because when the difference between the two becomes small, the rotational speed of the motor 10 is reduced to extremely reduce the flow velocity, and the refueling is stopped at the same time as the refueling stop signal i is output. If so, this predetermined value may be set to zero, and the refueling stop signal i may be output when the two match.

In the above configuration, the following explanation is based on the assumption that a customer comes to the store and requests 40 liters.

When the nozzle 20 is removed from the case 22, the nozzle signal b changes from the L state to the H state, thereby energizing the motor 10 to rotate and returning the counting circuit 40 to zero.

Each lamp indicated by the set value display 30 is L ₁
→L ₂ →L ₃ →L ₅ →L ₆ →L ₇ →L ₁ →L ₂ → and switching lighting starts.

When a built-in valve (not shown) in the nozzle 20 is opened to supply oil, the pulse generator 16 outputs a number of flow pulse signals a corresponding to the amount of oil measured by the flow meter 14, and the counting circuit 40 counts the flow pulse signals a.

Regardless of where this refueling starts, if the switch 32 is operated to output the setting signal c while the lamp _L5 corresponding to the set value of 40 liters is lit, the control circuit 46 will control the subsequent Switching of the value of the set value display signal f is stopped and only the lamp _L5 is blinked to notify that the setting has been made, and a set value signal h representing the value of 40 liters is outputted and given to the comparator circuit 48. The comparator circuit 48 compares the value of the refueling value signal d and the value of the set value signal h, and when the difference between the two reaches the predetermined value, outputs the refueling stop signal i and sends the refueling stop signal i to the motor control circuit 42.
, the motor 10 is stopped with priority over the nozzle signal b, and refueling is completed at exactly 40 liters.

Note that if the refueling process is in progress before the setting, for example, the refueling amount may change.
When the volume exceeds 20 liters, the lighting of lamps L ₂ and L ₃ corresponding to "10" and "20" liters will be excluded and the lights will switch (skip) L ₁ → L ₄ → L ₅ , and the setting work will be completed. speed up.

On the other hand, if you set the 40 liters by mistake
If 30 liters or 50 liters has been set, if the switch 32 is operated again to output the setting signal c, the values of the setting value display signal f will be changed sequentially again, and the output of the setting value signal h will be stopped. This is the initial state. After that, while the lamp _L5 is on, all you have to do is operate the switch 32 to output the setting signal c to set 40 liters, and even when changing this setting, the display corresponds to the amount that has already been filled. As in the previous case, the display is performed by skipping the lamps.

Further, after the refueling is stopped due to the refueling stop signal i, the setting signal c is given to the set value control circuit 46, and the set value signal h disappears, so the refueling stop signal i also disappears, and at this time, the nozzle If the signal b is still in the H state, the motor 10 is energized again, making it possible to supply additional oil or set a larger set value.

When refueling is finished and the nozzle 20 is returned to the case 22, the nozzle signal b changes from the H state to the L state,
At this time, the set value control circuit 46 is reset and the set value signal h disappears.

Although the above description has been made based on the illustrated embodiment, the present application is not limited to this embodiment. In other words, the solenoid valve may be driven by the oil supply stop signal to close the oil passage. The set value display may also display numbers in a segmented manner. Further, the refueling device itself may be installed on the ground or may be suspended from above the refueling point.

(g) Effect By configuring as described above, the numerical values for setting are changed sequentially before performing the setting operation, and the setting switch is operated once while the desired value is displayed. Since only one setting switch is needed, the wear of the setting switch is slowed down, resulting in a long service life.As the refueling process progresses and the refueling value (count value) increases, the display of smaller set values will be thinned out. The setting value display cycle is faster, and even if the setting switch is pressed once too late, the display cycle immediately returns, resulting in an easy-to-operate device.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the external shape of the oil supply device of the present invention, FIG. 2 is a diagram showing the relationship between the display unit 8 and the metering unit 6 in detail, and FIG. 3 is a diagram showing the control section 32 in FIG. 2.
It is a block diagram showing the electric circuit inside. 6, 6', 6''...Measuring unit, 8...Display unit, 12...Pump, 14...Flowmeter, 20
... Nozzle, 22 ... Nozzle case.

Claims (1)

[Claims] 1. An oil supply path consisting of a pump, a flow meter, a hose, and a nozzle, a pulse signal generating means that outputs a number of flow pulse signals corresponding to the measured value of the flow meter, and a means for counting the flow rate pulse signals and supplying the counted value. A counting means for outputting a value signal, a means for displaying a counted value, a switch for outputting a return signal to return the counted value to zero, a setting signal generating means for outputting a setting signal, and a plurality of set values are stored. When the zero signal is generated, switching output of set value display signals indicating each set value is started at fixed time intervals, and set value display signals having values smaller than the counted value are thinned out and outputted, and the set value display signals are inputted. a set value control means that stops switching to the next set value display signal when the set value display signal is outputted at that time, and simultaneously outputs the set value corresponding to the set value display signal being outputted at that time as a set value signal; Comparison means for comparing the oil supply value signal and outputting a oil supply stop signal when the difference between the two reaches a predetermined value, and means for displaying the value corresponding to the generated set value display signal. Refueling device.