JPH0333679Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a refueling system equipped with a sales management machine, and in particular, the present invention relates to the display value of a mechanical totalizer attached to a flowmeter and the sales aggregation of the sales management machine. The present invention relates to a refueling device that always matches the values.

[Prior Art] In general, this type of oil supply device is equipped with a pump, a totalizer that measures the flow rate delivered from the pump and integrates the measured flow rate, and a flow rate pulse generator that emits flow rate pulses. a meter and a refueling nozzle provided at the tip of a hose for refueling the oil measured by the flow meter, and is connected to the meter through a signal line, The structure includes a sales management machine that performs the necessary management for selling oil fluids. Here, the totalizer is called a totalizer or daily counter, and is required to be attached to the flowmeter in order to manage the total amount accumulated each day or for each predetermined period, and to ensure fair transactions. , a mechanical totalizer is used.

Therefore, when this type of refueling system is particularly a suspended type refueling system, the refueling nozzle has two positions: a storage position at a high place in the refueling station, a standby position approximately 1.8 m from the ground, and a refueling position where the vehicle is refueled. Therefore, as the hose moves up and down, the hanging length of the hose changes, and the expansion rate of the hose changes accordingly. As a result, for example, if the pump motor is started with the refueling nozzle lowered from the standby position to the refueling position, even though the refueling nozzle is closed immediately after the pump is driven by the pump motor, the hose A small amount of oil flows from the pump toward the hose by the amount of expansion, and the flow rate at this time is measured by a flow meter.

However, the flow rate due to the expansion of the hose is usually
This is an extremely small amount of about 0.01 to 0.05, and is totaled by a mechanical totalizer, but in order to avoid distrust among customers, the flow rate corresponding to the expansion of the hose is not output to the sales management machine as a POS pulse. It's summery. On the other hand, on the sales management machine side, when issuing a slip, a POS pulse with a refueling amount of 0.1 or less is not counted as a measurement error range and has a defense function that does not issue a slip.

[Problem that the invention attempts to solve]

However, in the case of a refueling device with such a configuration,
The cumulative value of the mechanical totalizer does not match the total value calculated by the sales management machine to total the total sales for one day. In other words, on the sales management machine side, the total flow rate is reduced by the amount of hose expansion that is repeated many times a day.
There is a problem in that the reliability as a refueling device decreases.

The present invention was developed in view of the problems of the conventional technology, and is a refueling system that increases user reliability by always matching the displayed value of the totalizer with the total value of the vending machine. The goal is to provide equipment.

[Means for solving problems]

In order to solve the above problems, the present invention is equipped with a pump, a totalizer that measures the flow rate of oil sent from the pump, integrates the measured flow rate, and a flow rate pulse transmitter that emits flow rate pulses. It has a metering device equipped with a flow meter and a refueling nozzle installed at the end of a hose for refueling the oil measured by the flow meter. In a refueling device that is connected to a sales management machine that performs necessary management for sales of oil liquid, the metering machine includes a refueling device that detects the start and end of refueling work based on a movement operation of the refueling nozzle from a predetermined position. zero by inputting the refueling work start signal from the work start/end detection circuit, the actual refueling detection circuit that detects that oil liquid is actually discharged from the refueling nozzle, and the refueling work start/end detection circuit. A refueling amount calculation circuit that calculates the refueling amount by counting the flow rate pulses that are reset and output from the flow pulse transmitter, and a POS pulse output circuit that outputs POS pulses corresponding to the refueling amount to the vending machine. and a correction amount calculation storage control circuit that corrects the total value calculated by the sales management machine based on the POS pulse output from the POS pulse output circuit so that it matches the cumulative value of the totalizer. The correction amount calculation storage control circuit receives the refueling amount data from the refueling amount calculation circuit, the refueling work end signal from the refueling start/end detection circuit, and the actual refueling start signal from the actual refueling detecting circuit. are input, and if the refueling end signal is input before the actual refueling start signal is input, the refueling amount data at this time is stored as correction amount data, whereas when the actual refueling start signal is input, this storage is performed. The POS pulse output circuit is configured to output the correction amount data that has been set, and to clear the stored correction amount data to zero by inputting a subsequent refueling operation end signal, and the POS pulse output circuit detects the start of actual refueling from the actual refueling detection circuit. The signal, the refueling amount data from the refueling amount calculation circuit, and the correction amount data from the correction amount calculation storage control circuit are respectively input, and by inputting the actual refueling start signal, the refueling amount data is inputted regardless of the progress of the refueling amount data. Outputs POS pulse and
The number of output pulses is compared with the value obtained by adding the correction amount data to the incremented oil supply amount data, and when the two match, a POS pulse is output in accordance with the increment of the oil supply amount data. It is characterized by

[Effect]

The flow rate pulse including the hose expansion is input to the refueling amount calculation circuit and is calculated as the refueling amount.Also, if the current refueling operation is completed without actually refueling by operating the refueling nozzle, Since the amount of hose expansion is stored as a correction amount for the next refueling by the correction amount calculation storage control circuit, when the actual refueling start signal is input from the actual refueling detection circuit in the next refueling operation,
POS pulses including the previous hose expansion can be output to the sales management machine at high speed. POS pulses can be output to a sales management machine at high speed.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 3.

Figure 1 shows the overall configuration of the suspended refueling system used in this example.
A building 2 is provided with a machine room 2B, and an elevated area 3 consisting of a beam, a canopy, etc. is formed above the building 2. A pipe 4 is provided along the building 2, one end of which opens into an underground tank 5, and the other end connected to a hose elevator 11, which will be described later. A pump 7 located in the machine room 2B and driven by a pump motor 6, and a flow meter 8 for measuring the amount of oil supplied are provided in the middle of the piping 4.
The flowmeter 8 includes a direct-reading mechanical totalizer 9, usually called a totalizer, daily counter, etc.
As shown in characteristic D in the figure, a flow rate pulse generator 10 is attached which transmits a flow rate pulse proportional to the measured flow rate.

Further, a hose elevator 11 is provided at the high place 3, and the hose elevator 11 includes a rotatably supported hose reel 12 and a hose elevator motor 13 that rotates the hose reel 12 in forward and reverse directions. The other end of the pipe 4 is connected to the hose reel 12, and the base end of a hose 14 is wound around the hose reel 12, and a refueling nozzle 15 is provided at the tip of the hose 14.
is installed. On the other hand, a switch box 16 for detecting the nozzle position is provided in the hose elevator 11, and the refueling nozzle 15 is moved to the uppermost storage position A in the switch box 16 according to the rotation of the motor 13 or the hose reel 12. Built-in are a storage position detection switch 16A, a standby position detection switch 16B, and a refueling position detection switch 16C, which detect when the vehicle is at the standby position B, which is about 1.8 m from the ground, and the refueling position C, where the vehicle is refueled.

Further, a hand switch box 17 is provided at the refueling nozzle 15 or near the refueling nozzle 15 in the middle of the hose 14.
7 is provided with a lowering switch 18 for lowering the refueling nozzle 15 from the standby position B to the refueling position C, and a raising switch 19 for raising the refueling nozzle 15 from the refueling position C to the standby position B.

Reference numeral 20 indicates a refueling amount display installed at a location that is easy for customers to see, such as on the side wall of the building 2. Reference numeral 21 indicates a control panel installed in, for example, the office 2A, and the control panel 21 includes a control device shown in FIG. etc., and are electrically connected to a pump motor 6, a flow rate pulse transmitter 10, a hose lifting/lowering motor 13, switch boxes 16, 17, an oil supply amount display 20, a sales management machine 22, which will be described later, and the like.

Furthermore, 22 is a sales management machine usually called "POS" installed in the office 2A or an outdoor office machine box, etc. The sales management machine 22 has a card reader for reading cards, and a preset for refueling. Numeric keypad for value setting, product sales key,
Equipped with a printer, display, etc. for issuing slips,
These functions have come to fulfill the functions necessary for sales management at gas stations. In addition, sales management machine 2
The configuration, functions, etc. of 2 are conventionally known. The sales management machine 22 is connected to a control device 24, which will be described later, via a signal line 23, and the control device 24 sends a POS pulse, which is a signal corresponding to the flow rate pulse, and a message indicating that the weighing machine enters the refueling system. Therefore, the sales management machine 22 is also ordered to enter the management system.
On the other hand, the vending control machine 22 outputs a pump lock signal (hereinafter referred to as a PLK signal) which keeps the pump motor 6 in a locked state except when entering the control system. Here, the PLK signal releases the pump lock when the card is read in the vending machine 22 as shown in FIG.
This signal is used to lock the pump again when it is determined that the standby position detection switch 16B is turned on based on the POSBUSY signal.

Next, FIG. 3 shows the control device 24 used in this embodiment.
The control device 24 includes a refueling work start detection circuit 25, a refueling work end detection circuit 26, a POSBUSY output circuit 27, a pump motor drive control circuit 28, a refueling amount calculation circuit 29, and an actual refueling start detection circuit. circuit 30, correction amount storage circuit 31, correction amount calculation storage control circuit 32, clock circuit 33,
POS pulse output circuit 34, display control circuit 35,
and a POS transmission circuit 36, etc., which are connected as shown in the figure. The pump motor drive control circuit 28 is connected to the pump motor 6 via the pump motor drive circuit 37, the display control circuit 35 is connected to the refueling amount indicator 20 via the display drive circuit 38, and the POS pulse transmission circuit 36 is connected to the sales management machine 22 via the signal line 23.

Here, the refueling work start detection circuit 25 receives signals from the refueling position detection switch 16C and the lowering switch 18.
Upon receiving the ON signal, the refueling work completion detection circuit 26 receives the ON signal from the standby position detection switch 16B and the lift switch 19 and outputs the corresponding signal. It is something.

POSBSUY output circuit 27 is lower switch 18
Standby position detection switch 1 rises when turned ON.
The POSBUSY signal that falls when 6B turns on,
It outputs to the sales management machine 22 via the POS transmission circuit 36 (see characteristic C in Figure 3).
The POSBUSY signal is ON while the weighing machine is in the refueling system.
The state is maintained. The pump motor drive control circuit 28 is in a state where the input of the PLK signal is stopped,
A motor signal that rises when the refueling position detection switch 16C is turned on and falls when the rise switch 19 is turned on is output to the pump motor drive circuit 37, during which time the pump motor 6 is driven (see characteristic c in FIG. 3).

The refueling amount calculation circuit 29 is reset to zero by inputting a refueling work start signal (for example, turning on the down switch 18), performs a binary coded decimal calculation on the flow rate pulse from the flow rate pulse transmitter 10 as the refueling amount, and calculates the refueling amount. Output as data.

The actual refueling start detection circuit 30 compares the refueling amount data inputted from the refueling amount calculation circuit 29 at the start of the current refueling operation with a predetermined amount (for example, 0.1 to 0.2) that can be regarded as actual refueling rather than the expansion of the hose 14. However, when the refueling amount data reaches a predetermined value, it is reset by a rise and refueling operation end signal (for example, turning on the rise switch 19), and during this period, an actual refueling start signal is output (Fig. 3). ).

The correction amount storage circuit 31 and the correction amount calculation storage control circuit 32 lower the refueling nozzle 15 to the refueling position C as shown by the reference numeral 39 in the middle of the nozzle position characteristic A in FIG. If the pump is raised to the standby position B again without performing any work, the oil supply amount data corresponding to the expansion of the hose 14 that occurs when the pump 7 is started is calculated and stored as a correction amount. That is, the correction amount calculation storage control circuit 32 calculates the refueling amount when the refueling work end signal is input from the refueling work end detecting circuit 25 even though the actual refueling start signal is not input from the actual refueling start detecting circuit 30. A first function of storing the refueling amount data from the circuit 29 in the correction amount storage circuit 31, and when this is repeated many times, adding it each time as a carryover correction amount and storing it;
When the actual refueling start signal is input for the next refueling, the correction amount data stored in the correction amount storage circuit 31 (the correction amount from the previous actual refueling) is output to the POS pulse output circuit 34. It has a second function and a third function of storing zero as a correction amount in the correction amount storage circuit 31 when an actual refueling start signal is input and then a refueling end signal is input. There is.

On the other hand, the clock circuit 33 oscillates clock pulses (for example, 200 Hz) that are denser than normal flow pulses and can be counted.
It outputs to the POS pulse output circuit 34 and display control circuit 35.

Further, the POS pulse output circuit 34 receives the oil supply amount data from the oil supply amount calculation circuit 29, the correction amount data from the correction amount calculation storage control circuit 32 (when actual refueling was not performed in the previous refueling operation), An actual refueling start signal from the actual refueling start detection circuit 30 is input, and upon input of the actual refueling start signal, a clock pulse from the clock circuit 33 is output as a POS pulse regardless of the progress of the refueling amount data. The function compares the output number of the POS pulse and the value obtained by adding the correction amount data input from the correction amount calculation storage control circuit 32 to the ever-increasing refueling amount data, and when the two match, the internal The second function detects the coincidence by generating a coincidence signal (refer to the characteristics in Figure 3), and the third function outputs the POS pulse in accordance with the progress of the refueling amount data by outputting the coincidence signal. It has both. Therefore, the POS pulse output circuit 27 outputs a POS pulse having the characteristics shown in FIG. 3 to the sales management machine 22.

Furthermore, the display control circuit 35 has substantially the same functions as the first to third functions of the POS pulse output circuit 34 described above, and also outputs two internally output weighing pulses (the same pulses as the POS pulses). Performs evolutionary decimal counting and sends this counting signal to display drive circuit 3
It has a function to output to 8. That is, the display control circuit 35 has a first function of internally outputting the clock pulse from the clock circuit 33 as a measuring pulse, regardless of the advance of the refueling amount data, upon input of the actual refueling start signal, and a first function of internally outputting the clock pulse from the clock circuit 33 as a measuring pulse, regardless of the increment of the refueling amount data, and A second function compares the amount data and detects that the two match, a third function internally outputs a measuring pulse in accordance with the progress of the refueling amount data when the two match, and a third function that outputs a measuring pulse internally according to the progress of the refueling amount data. It also has a fourth function of converting into binary coded decimal and outputting a count signal.

The present embodiment is configured as described above, and its operation will be described next.

When a card is inserted into the vending machine 22 and the card is read in order to start refueling the vehicle, output of the PLK signal from the vending machine 22 is stopped and the pump lock is released.

Next, when the lowering switch 18 is turned on to lower the refueling nozzle 15, the hose lifting motor 13 rotates downward, and the refueling nozzle 15 descends from the standby position B to the refueling position C. At this time, lower switch 1
8, a POSBUSY signal is output to the sales management machine 22.

When the refueling nozzle 15 reaches the refueling position C, the refueling position detection switch 16C is turned on, the refueling amount calculation circuit 29 is reset, and a motor signal is output from the pump motor drive circuit 28 to start the pump motor 6. However, when the refueling nozzle 15 reaches the refueling position C, the hanging length of the hose 14 becomes longer, and as the pump 7 is started, the hose 14 expands, and the oil liquid corresponding to the expansion of the hose 14 reaches the flow meter 8.
and is measured by the flow meter 8. As a result, the flow rate at this time is integrated in the totalizer 9, and a flow pulse proportional to this flow rate is transmitted from the flow pulse transmitter 10 (see the mark (*) in characteristic C in Fig. 3). ). This flow rate pulse is then calculated by the oil supply amount calculation circuit 29 as oil supply amount data.

Next, insert the refueling nozzle 15 into the fuel tank,
When the valve is opened, oil is discharged from the oil supply nozzle 15, and the flow rate at this time is measured by the flow meter 8, and a flow pulse is transmitted from the flow pulse generator 10, which is calculated by the oil supply amount calculation circuit 29.

However, the actual refueling start detection circuit 25 takes in the refueling amount data from the refueling amount calculation circuit 29, and outputs an actual refueling start signal when the data reaches a predetermined amount.
As a result, upon input of the actual refueling start signal, the POS pulse output circuit 34 outputs the clock pulse from the clock circuit 33 as a POS pulse to the sales management machine 2.
Start outputting at 2. That is, the POS pulse output circuit 34 first responds to the expansion of the hose 14.
POS pulses (refer to the part marked with an asterisk (*) under characteristics in Figure 3) are output until the number of POS pulses output matches the oil supply amount data (in Figure 3). In response to the flow rate pulse marked (**) with the characteristic D, output the POS pulse marked (**) with the characteristic in Figure 3. moreover,
When the output number of POS pulses matches the incremented oil supply amount data, the POS pulse output circuit 34 outputs POS pulses in accordance with the increment of the oil supply amount data.

On the other hand, similarly to the POS pulse output circuit 34, the display control circuit 35 internally generates the same weighing pulse as the POS pulse, counts this weighing pulse, and outputs a count signal to the display drive circuit 38. Then, this value is displayed on the oil supply amount display 20.

Furthermore, when the desired amount of refueling is reached, refueling nozzle 1
Close the valve 5 and turn on the lift switch 19. As a result, the hose lifting motor 13 rotates upward.
The refueling nozzle 15 rises from the refueling position C to the standby position B. On the other hand, as the rise switch 19 turns ON, the output of the motor signal stops, and the pump motor 6
The drive stops. At the same time, actual refueling start detection circuit 3
The output of the actual refueling start signal from 0 stops. When the refueling nozzle 15 reaches the standby position B, the standby position detection switch 16B turns on.
The output of the POSBUSY signal stops and the sales control machine 2
The PLK signal is input from 2 and is pump-locked. With the above, refueling of the first vehicle is completed, and preparations are made for the next refueling.

On the other hand, as described above, if the refueling nozzle 15 is lowered to the refueling position C, but is raised again to the standby position B without actually refueling, the hose The oil supply amount data for the expansion is stored as a correction amount in the correction amount storage circuit under the control of the correction amount calculation storage control circuit 32, and when actual oiling is performed next time or thereafter, it is sent to the POS pulse output circuit. 34, is output to the display control circuit 35.

Thus, according to the present embodiment, the refueling amount data corresponding to the expansion of the hose as the hose 14 moves up and down is outputted from the POS pulse output circuit 34 to the sales management machine 22 as a POS pulse upon input of the actual refueling start signal. Therefore, the totalizer 9 attached to the flowmeter 10
It is possible to always match the displayed value with the total value of the sales management machine 22.

Further, since the POS pulse output circuit 34 and the display control circuit 35 have the same function, the issued slip issued by the sales management machine 22 and the value displayed on the fuel supply amount display 20 can always be made to match.

Furthermore, without actually refueling, the refueling nozzle 1
5, the oil supply amount data for the hose expansion is stored in the correction amount storage circuit 31 and can be output as a POS pulse during actual refueling thereafter, so it is possible to match the data with even higher accuracy. .

In the embodiment, a suspended weighing machine is used as an example of a weighing machine, but a fixed weighing machine may also be used. In addition, the actual refueling start detection circuit 30 is connected to the refueling amount calculation circuit 2.
Although the refueling amount data from 9 is compared with a predetermined value, a valve opening detection sensor may be provided in the refueling nozzle 15 to directly detect the opening of the valve by the lever. Further, the control device 24 of the present invention may be configured by a microcomputer or the like, and is not limited to the circuit configuration of the embodiment.

[Effect of idea]

The refueling device according to the present invention, as described in detail above, has a configuration that can output POS pulses corresponding to the expansion of the hose to a sales management machine. It is possible to match the displayed value of the totalizer attached to the flowmeter with the total value of the sales management machine 22 without making any changes to the flowmeter, eliminating distrust among the users of the measuring machine, and facilitating smooth refueling. Able to manage facilities.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of the suspension type refueling system used in this embodiment, FIG. 2 is a specific circuit configuration diagram of the control device, and FIG. 3 is an operation explanatory diagram illustrating the operation of the control device. 4...Piping, 7...Pump, 8...Flowmeter, 9
... Totalizer, 10 ... Flow rate pulse transmitter, 11 ...
...Hose elevator, 14...Hose, 15...Refueling nozzle, 22...Sales management machine, 24...Control device, 29...Refueling amount calculation circuit, 30...Actual refueling start detection circuit, 34...POS pulse Output circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] A pump, a flow meter equipped with a totalizer that measures the flow rate of oil delivered from the pump and integrates the measured flow rate, and a flow pulse transmitter that transmits flow rate pulses. In order to supply the oil measured by the flow meter, it has a measuring machine equipped with a refueling nozzle installed at the tip of a hose, and is connected to the measuring machine via a signal line, and is connected to the measuring machine through a signal line, In a refueling device having a sales management machine that performs necessary management for sales, the measuring machine includes a refueling work start/end detection device that detects the start/end of refueling work based on a movement operation of the refueling nozzle from a predetermined position. reset to zero by inputting a refueling work start signal from the circuit, an actual refueling detection circuit that detects that oil liquid is actually discharged from the refueling nozzle, and the refueling work start/end detection circuit, a refueling amount calculation circuit that calculates the refueling amount by counting the flow rate pulses output from the flow rate pulse transmitter; a POS pulse output circuit that outputs a POS pulse corresponding to the refueling amount to the vending machine; and the POS pulse. a correction amount calculation storage control circuit that corrects the total value calculated by the sales management machine based on the POS pulse output from the output circuit so that it matches the cumulative value of the totalizer; The correction amount calculation and storage control circuit receives the refueling amount data from the refueling amount calculation circuit, the refueling work end signal from the refueling start/end detection circuit, and the actual refueling start signal from the actual refueling detecting circuit, When the refueling end signal is input before the actual refueling start signal is input, the refueling amount data at this time is stored as correction amount data, while when the actual refueling start signal is input, the stored correction amount is In addition to outputting the data, the stored correction amount data is cleared to zero by inputting a subsequent refueling end signal, and the POS pulse output circuit receives an actual refueling start signal from the actual refueling detection circuit, and also clears the stored correction amount data to zero. The refueling amount data is input from the refueling amount calculation circuit, and the correction amount data is input from the correction amount calculation storage control circuit, and upon input of the actual refueling start signal, a POS pulse is output regardless of the progress of the refueling amount data. , the POS
The number of output pulses is compared with the value obtained by adding the correction amount data to the incremented oil supply amount data, and when the two match, a POS pulse is output in accordance with the increment of the oil supply amount data. A refueling device characterized by: