JPS6318633Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present application relates to a refueling device that has a function of displaying the amount of refueling, the amount of refueling, and a unit price, and a function of changing the unit price display.

In order to improve work efficiency, gas stations use refueling devices that display the amount of refueling as well as the amount and unit price of refueling.

The unit price for calculating the refueling amount is set using a unit price setting device installed at an appropriate location on the refueling device, but the set value varies depending on the day (for example, weekdays and holidays), time of day, or Changed by customer.

On the other hand, the display of the amount of refueling and amount of refueling on the refueling device is maintained until the next customer is refueled, and if the device does not have a multiplication circuit that calculates the unit price x amount of refueling, the unit price is displayed. If only the unit price was changed, the value obtained by multiplying the unit price display value by the refueling amount display value did not match the refueling amount display value, causing an inconvenience.

In order to solve the above-mentioned inconvenience, the present invention is designed so that the unit price display is not changed even if the unit price change operation is performed when the display of the amount of refueling or the display of the amount of refueling is not zero. A detection switch that detects movement from the refueling position and outputs a movement signal, a flowmeter, a pulse transmitter that outputs a refueling pulse signal every time a unit amount of oil is measured by the flowmeter, and this refueling pulse signal. a first counting circuit that cumulatively counts and outputs the counted value as a refueling amount and returns the counted value to zero upon input of the movement signal; a unit price setting circuit that outputs an amount signal corresponding to the input pulse signal based on a stored value; a second counting circuit that returns a counted value to zero upon input of a movement signal; and a second counting circuit that monitors at least one of the refueling amount and the refueling amount;
and a monitoring circuit that outputs a signal a when the value is zero, and the unit price setting circuit is characterized in that the stored value is allowed to be changed only while the signal a is being input.

The illustrated embodiment will be described below.

Reference numeral 1 designates the housing of the oil supply device, and inside the housing there is a pump 2 that pumps out oil, a motor 3 that rotates the pump 2, a flowmeter 4 that measures the oil, and a flowmeter that measures a unit amount of oil. a pulse transmitter 5 that outputs a refueling pulse (hereinafter simply referred to as "pulse P");
A nozzle case 7 stores the nozzle 6 when not refueling, a nozzle detection switch 8 detects storage or removal of the nozzle 6 in the nozzle case 7 and outputs a corresponding signal n, and detects the amount of refueling, the amount of refueling, and the unit price, respectively. Indicators 9, 10, and 11 for display and a control section 12 including an electric circuit described later are housed, respectively.

13 is a unit price setting device that sets the unit price from the outside; 1
4 is an oil supply hose, 15 is an oil storage tank (not shown),
This is piping that connects the pump 2, flow meter 4, and hose 14, respectively.

Next, referring to FIG. 2, the pulses P output from the oscillator 5 are counted by a first counting circuit (hereinafter simply referred to as "counting circuit 16"), and the counted value is transmitted via the display drive circuit 17. A numerical value is displayed on the oil supply amount display 10.

The unit price setting circuit 18 stores the unit price set by the unit price setting device 13, and each time a pulse P is input, the counting circuit 19 generates an amount signal corresponding to one pulse P based on the stored unit price. Output to. A second counting circuit (hereinafter simply referred to as "counting circuit 19") integrates this amount signal and displays the integrated value numerically on the refueling amount display 9 via the display drive circuit 20.

The unit price set and stored in the unit price setting circuit 18 is numerically displayed on the unit price display 11 via the display drive circuit 21.

A monitoring circuit 22 outputs a signal a when the measured value of either or both of the counting circuit 16 and the counting circuit 19 is zero, and supplies the signal a to the unit price setting circuit 18. The unit price setting circuit 18 accepts the unit price signal output from the unit price setting device 13 only when this signal a is input, and also stores the newly set unit price in place of the currently stored unit price. The output signal n of the nozzle detection switch 8 is at an L (low) level when the nozzle 6 is housed in the nozzle case 7, and becomes an H (high) level when it is removed from the nozzle case 7.

The motor control circuit 23 energizes the motor 3 when the signal n is H, and de-energizes the motor 3 when the signal n is L.

Note that the counting circuits 16 and 19 are activated when the signal n changes from L to H (signal n at this time is called a movement signal), that is, when the nozzle 6 is removed from the nozzle case 7 and moved from the non-refueling position. It will be returned to zero.

Since the configuration is as described above, unless at least one of the indicators 10 and 9, that is, the counting circuits 16 and 19, is zero, the signal a will not be output from the monitoring circuit 22, and the unit price setter 13 will be operated to set a new unit price. Even if input, the unit price already stored in the unit price setting circuit 18 is not rewritten, so the unit price display on the display 11 is not changed and the unit price is not changed.

Therefore, when changing the unit price, first remove the nozzle 6 from the nozzle case 7 and then close the counting circuit 1.
Do this after zeroing 6 and 19. Note that once the nozzle 6 returns to zero, the unit price may be changed after returning the nozzle 6 to the nozzle case 7.

Furthermore, the present invention is not limited to this embodiment, but can also be applied to a refueling device in which a hose or a nozzle is suspended from a ceiling or the like above a refueling point.

Since the configuration is as detailed above, even if the device has only an inexpensive integration type counting circuit as a means of calculating the refueling amount, the value displayed on the unit price display can be multiplied by the value displayed on the refueling amount display. This prevents the inconvenience of the value being different from the value displayed on the refueling amount display.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the structure of the oil supply system, and FIG. 2 is a block diagram showing an electric circuit including a control section. 1...Housing, 2...Pump, 4...Flowmeter, 6...Nozzle, 9, 10, 11...Indicator,
13... Unit price setting device, 16, 19... Counting circuit.

Claims (1)

[Scope of utility model registration request] A detection switch that detects movement of the nozzle from its non-lubricating position and outputs a movement signal, a flow meter and a pulse transmitter that outputs a lubricating pulse signal every time a unit oil amount is measured by the flowmeter, and this lubricating a first counting circuit that cumulatively counts the pulse signal, outputs the counted value as a refueling amount, and returns the counted value to zero upon input of the movement signal, and stores a set unit price;
a unit price setting circuit that outputs an amount signal corresponding to the input pulse signal based on a stored value each time the pulse signal is input; and a unit price setting circuit that cumulatively counts the input value each time the amount signal is input, and the counted value. a second counting circuit which outputs the amount of refueling as the amount of refueling and returns the counted value to zero upon input of the movement signal; and a second counting circuit which monitors at least one of the amount of refueling and the amount of refueling, and when the value is zero, outputs a signal a. and a monitoring circuit that outputs the unit price setting circuit, wherein the unit price setting circuit is allowed to change the stored value only while the signal a is being inputted.