JPS6357319B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to oil inventory management in oil storage tanks such as gasoline filling stations for automobiles.

At such gas stations, gasoline, etc. for sale is stored in underground tanks, and each tank is equipped with a level gauge.

Previously, when the amount of liquid in each oil storage tank became low, it was visually detected using a liquid level gauge, and orders were placed by telephone to the oil depot each time.

The purpose of the present invention is to automatically detect when it is necessary to order sales products such as gasoline, and to automatically perform the ordering process without human intervention, thereby streamlining inventory management. An object of the present invention is to provide a required inventory management device.

However, according to the present invention, the purpose of the lever is to provide a liquid amount measuring means for measuring the amount of liquid in each oil storage tank of a gas service station, and a first memory that stores the minimum amount of oil that needs to be refilled for each tank. means, a second storage means that stores a predetermined order amount to be refilled when the liquid amount in the tank reaches the minimum storage amount, and a first memory that stores the liquid amount in the tank measured by the liquid amount measuring means. Compare the amount of liquid stored in the tank with the minimum amount of oil stored in the tank, and if the amount of liquid in the tank is less than the minimum amount of oil stored in the tank, the amount of liquid ordered for the tank stored in the second storage device is compared with the amount of liquid stored in the tank. This is achieved by having a determining means that outputs the order signal from the storage means and transmits an order signal of the order quantity to an order reception center such as an oil depot from the transmission means.

Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is an explanatory diagram of a fueling station using the management device of the present invention, in which 1, 1', 1''... are the fueling pipes 3, 3',
Refueling machines 4, 4', 4''... which communicate with underground tanks 2, 2', 2''... at 3''... are connected to underground tanks 2, 2', 2''...
This is a liquid level measuring device installed at 2''...

The specific configurations of the liquid level measuring instruments 4, 4', 4''... There are various types of floats that are installed near the liquid level measuring device and detect changes in the oil level by detecting changes in the position of the float. The signal is converted into a digital signal by the AD conversion circuit 22.

In the figure, reference numeral 5 denotes a control device placed in the office of the gas station. Liquid level measuring instruments 4, 4', 4'', etc. are connected to the control device 5, and the control device 5 is connected to the oil tank via the means described later. Connect to the computer 7 at the location.

In the figure, 8, 8', 8''... are each underground tank 2, 2',
As an example, underground tanks 2, 2', 2'', etc. are filled with different types of oil: regular gasoline, high-octane gasoline, and diesel oil.

Fig. 2 is a block diagram showing an embodiment of the management device of the present invention, in which oil level position detection signals A, A', A'', etc. of each liquid level measuring device 4, 4', 4'', etc. are converted to an A-D converter circuit. At step 22, it is converted into a digital signal B and introduced into the liquid level/volume conversion circuit 10 via the fire prevention quantity barrier 23 and the switching circuit 9, and the liquid quantity signal C calculated by the circuit 10 is introduced into the judgment circuit 11.

In addition, the lower limit of inventory for each tank 2, 2', 2''...
For example, regular gasoline tank 2 is 2Kl.
The inventory lower limit signal D of the storage circuit 12, which is the first storage means, stores the minimum amount of oil that requires replenishment, such as 1 Kl for the high-octane gasoline tank 2' and 1 Kl for the diesel oil tank 2''. Introduced into the circuit 11.

On the other hand, an output signal E, which is sequentially outputted every second, for example, from a timing circuit 13 having an oscillation function, is introduced into the switching circuit 9 and the memory circuit 12.

The judgment circuit 11 is a circuit that compares the liquid level signal C and the inventory lower limit signal D and issues an output signal when the former is less than the latter.The output signal F of the judgment circuit 11 is sent to each tank 2, 2' ,2″…according to the shipping amount,
A memory circuit 14 is a first storage means that stores a predetermined order quantity for each tank to be refilled (for example, 8 Kl for tank 2, 4 Kl for 2', 6 Kl for 2''), and a line selection circuit 15. to be introduced.

This line selection circuit 15 is a circuit that stores telephone numbers of oil depots and other places.

The order signal G from the storage circuit 14 is converted by the modem 16 into an order signal G' which is carried over the telephone line and introduced into the line switching circuit 17.

Also, a telephone command signal H to the oil depot drawn from the selection circuit 15 is introduced into the line switching circuit 17, and an order signal G is introduced from the storage circuit 14 via the modem 16 and line switching circuit 17 to the computer 7 of the oil depot. .

Next, the usage and effect will be explained.

From the timing circuit 13, a short time (for example, 1
The output command signal E is introduced into the switching circuit 9 and the memory circuit 12 at intervals (seconds), and in the switching circuit 9, the oil level position detection signals A, A',
A''... is converted into a digital signal B by the A-D conversion circuits 22, 22', 22''... and is simultaneously inputted via the fire protection amount barrier 23, but this output command signal E causes the liquid level conversion circuit The signal to 10 is signal A
→A′→A″→A→, only one signal is outputted in sequence at 1-second intervals in a cyclical manner.The oil level position detection signal B, whose content is the oil level, is sent to the liquid level conversion circuit. At step 10, the signal is converted into an oil amount and enters the judgment circuit 11 as a liquid amount signal C.

On the other hand, the memory circuit 12 also receives the output command signal F and sends the inventory lower limit signal D of the tanks 2, 2', 2'', etc. to the judgment circuit 11 in cycles every second.
In the judgment circuit 11, 1 for each tank 2, 2', 2''...
The current liquid amount is compared with the lower limit of stock at every second.

For example, when the current amount of liquid in the regular gasoline tank 2 according to the liquid amount signal C falls below the inventory lower limit signal D of the tank 2 from the storage circuit 12, the determination circuit 11 issues an output signal F. The same applies to other tanks.

The output signal F of the judgment circuit 11 is sent to the line selection circuit 1.
5, the telephone number of the oil depot is retrieved, and this content is introduced from the line selection circuit 15 as a telephone command signal H to the line switching circuit 17, and connected to the computer 7 of the oil depot.

Also, the output signal F enters the memory circuit 14 and the tank 2
This content is converted into an order signal G' by the modem 16 as an order signal G, which enters the line switching circuit 17, and is further transmitted to the computer at the oil depot via a telephone line as an order signal G''. 7 issues an oil distribution slip 7a on which the order details are printed.

The oil depot will deliver 8Kl of regular gasoline to the relevant gas station based on this fuel distribution slip 7a.

In addition, if the function of the inventory management device of the present application is added to the sales data management device (hereinafter referred to as POS) installed at a gas station, the liquid level measuring device 4, 4',
It is also possible to introduce the output of 4"... into the POS and have the circuit inside the POS perform the function described above.

As described above, the present invention automatically detects when the inventory amount in each underground oil storage tank at a gas station reaches a level that requires replenishment, and orders a predetermined amount to the oil depot. Therefore, inventory management and ordering operations do not require any human labor and can be streamlined.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a gas station using the management device of the present invention, and FIG. 2 is a block diagram showing an embodiment of the management device of the present invention. 1, 1', 1''...Refueling machine, 2, 2', 2''...Underground tank, 3, 3', 3''...Refueling pipe, 4, 4', 4''...Liquid level measuring device, 5...Inventory management Device, 7... Oil depot computer, 8, 8', 8''... Supply pipe, 9... Switching circuit, 10... Liquid level conversion circuit, 11... Judgment circuit,
12, 14...memory circuit, 13...timing circuit,
15...Line selection circuit, 16...Modem, 17...Line switching circuit.

Claims (1)

[Claims] 1. A liquid amount measuring means for measuring the amount of liquid in each oil storage tank at a gas service station, a first storage means for storing the minimum amount of oil that needs to be refilled for each tank, and a first storage means that stores the minimum amount of oil that needs to be refilled for each tank; A second storage means that stores a predetermined order amount to be refilled when the oil storage amount is reached, and a liquid amount of the tank measured by the liquid amount measuring means and the minimum amount of the tank stored in the first storage means. If the liquid amount in the tank is less than the minimum oil storage amount by comparing the liquid amount with the minimum oil storage amount, the order amount for the corresponding tank stored in the second storage means is outputted from the second storage means, and the order amount is 1. An inventory management device for a fueling station, comprising a determining means for transmitting an order signal from a transmission means to an order receiving center such as an oil depot.