JPH0440279B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refueling station having a plurality of refueling areas for one refueling device.

If the engine of the vehicle being refueled is running during refueling, there is a risk of ignition, so the engine must be stopped. To do this, conventionally, the engine key is turned off and the engine key is pulled out.
The engine key was inserted into the lid provided at the opening of the fuel tank to open the lid. However, depending on the car model, the fuel tank opening lid can be opened by operating the driver's cab, and some lids do not have locks, and there is also a risk that the driver may forget to stop the engine due to a mistake. There is.

To this end, the present applicant proposed a fueling station in which an engine stop detector is installed in the refueling area and refueling is possible in response to a stop signal from the engine stop detector (Japanese Patent Application No. 58-66955). This engine stop detector detects electromagnetic waves from the engine's spark plug.

Now, normally, at a gas station, a fueling device is provided with a plurality of refueling areas, and vehicles entering any of the refueling areas can be refueled. For this reason, when there are multiple refueling areas, an engine stop detector must be provided in each of the refueling areas. Then, even if a vehicle that entered one refueling area stops its engine, another vehicle enters the other refueling area.
The engine stop detector in the other refueling area will detect the rotation of the engine of the other vehicle, and the vehicle refueling in one refueling area will stop refueling.

Therefore, an object of the present invention is to detect engine stoppage of a vehicle in a refueling area where refueling is to be performed in a refueling station that has a plurality of refueling areas for one refueling device, and to detect engine stoppage of a vehicle in a refueling area where refueling is to be performed, To provide a refueling station that can refuel regardless of whether the motor is rotating or stopping.

According to the present invention, a refueling request signal is output in response to a refueling request operation such as an action of removing a refueling nozzle from a nozzle hook or an operation of lowering a hanging refueling nozzle, and an operation of hanging a refueling nozzle on a nozzle hook or lowering the suspended refueling nozzle. A refueling device includes a refueling request detector that outputs a refueling end signal in response to an operation of raising a refueling nozzle, and enables refueling in response to the refueling request signal and disables refueling in response to the refueling end signal.
At a refueling station that has multiple refueling areas, each refueling area is equipped with an engine stop detector that detects when the engine has stopped, and the direction of movement of the refueling hose is detected to determine which refueling area to refuel. Refueling is possible using both the engine stop detection signal and refueling request signal of the engine stop detector of the refueling area determined by the refueling area discriminator, and the refueling area is detected during refueling. and a control device that controls the fuel supply to be stopped when an engine drive signal is issued from the engine stop detector.

Therefore, a vehicle approaches a refueling station, stops at a certain refueling area, and begins refueling.
At that time, the worker pulls the refueling hose toward the parked vehicle. In a fixed type refueling device, the refueling nozzle is removed from the nozzle hook, and in a hanging type refueling device, the refueling nozzle is lowered to the refueling position, but in either case, the signal output means responds to the above operation and requests refueling. Output a signal. Furthermore, by pulling the refueling hose, the refueling area discriminator determines in which refueling area the vehicle has stopped. Therefore, the engine stop detector in the refueling area where the vehicle is parked detects whether or not the engine of the vehicle is stopped. Therefore, when the driver stops the engine, the control device enables refueling based on the refueling request signal and the signal from the engine stop detector, so refueling is not performed while the engine is running. . Therefore, it is extremely preferable in terms of safety.

Further, in the event that the engine is accidentally driven during refueling work, refueling is stopped by the engine drive signal, which is equally safe.

As described above, according to the present invention, refueling is not performed unless the engine of the vehicle to be refueled is stopped, so it is safe. And since an engine stop detector is installed in each refueling area,
It is completely unaffected by vehicles entering other refueling areas.

In carrying out the present invention, it is preferable to use a switch that detects the direction in which the refueling hose is pulled as the refueling area discriminator. When such a discriminator is used, it can be determined that the vehicle to be refueled is stopped in the refueling area in the direction of the switch that is turned on by being pulled.

Further, as the engine stop detector, it is preferable to use an antenna or a coil that detects electromagnetic waves generated from a spark plug of the engine. Using such a detector, it is possible to detect and display the rotational state of an automobile engine, and to indicate whether the engine is normal or abnormal. That is, a vehicle entering the refueling area normally idles for several seconds and then stops its engine. Therefore, this idling state can be detected.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an installed fuel station in which the present invention is implemented in a fixed fuel supply device will be described below with reference to the drawings.

In FIGS. 1 and 2, a fixed stand S is installed on an island L between refueling areas A and B of a refueling station. The stand S is provided with a pump 2 driven by a motor 1, and this pump 2 sucks up oil from a tank (not shown), sends it to a hose 4 via a flow meter 3, and causes it to flow out from an oil supply nozzle 5. ing. Further, the flow rate pulse transmitter 6 provided in the flow meter 3 sends the pulse signal to the oil supply amount display meter 7, and displays the oil supply amount on the display section. On the island L near the stand S, there is a display device that includes a built-in control device 15 and includes a display device 8a on the refueling area A side and a display device 8b on the refueling area B side back to back to display the idling state of the engine. 25 are provided.
The indicators 8a and 8b include a rotation speed indicator 10 for displaying the engine rotation speed, and an indicator lamp 11 for indicating whether the engine is idling. On the floor of refueling areas A and B, there are vehicle detectors 12a and 12b consisting of coils that detect iron, etc., and engine stop detectors 13a and 13b consisting of antennas or coils that detect electromagnetic waves generated from engine spark plugs. is provided.

On the other hand, the stand S is provided with a refueling area discriminator 26 that determines which of the refueling areas A and B is to be refueled.

FIG. 3 shows a preferred embodiment of the refueling area discriminator 26 implemented in the present invention.

The refueling hose 4 is connected to the refueling station P via a swivel joint 27 at the stand S.
This swivel joint 27 has an elbow 27a. A cam 28 is provided on this elbow 27a. During refueling work, when refueling a vehicle parked in refueling area A, hose 4 is pulled in the direction of arrow A in Figure 3, so elbow 2
7a rotates clockwise and the cam 28 turns on the micro switch 29a. Also, refueling area B
When refueling a parked vehicle, the elbow 29a rotates in the opposite direction, so the micro switch 2
9b is turned on.

Therefore, if the micro switch 29a is turned on, it is detected that refueling is being performed in the refueling area A, and if the micro switch 29b is turned on, it is detected that refueling is being refueled in the refueling area B. Therefore, the refueling area can be determined.

In FIG. 1, a nozzle switch SW for determining whether or not the refueling nozzle 5 is hung on the nozzle hook of the stand S is provided on the nozzle hook. This nozzle switch SW constitutes a refueling request detector.

Various devices such as the pump motor 1 provided on the stand S and the detectors 12a and 12b, 13a and 13b provided on the floor of the refueling areas A and B are installed in the display device 25 via lines not shown. It is connected to a control device 15. Note that the control device 15 can also utilize the functions of a conventionally used refueling data input/output device.

In FIG. 4, a control device 15 is provided with a central processing section 16, which is connected to various devices such as the pump motor 1 via an input/output device 17. Therefore, signals from the respective devices are input to the central processing unit 16 via the input/output device 17, and signals from the central processing unit 16 are transmitted to the respective devices via the input/output device 17. ing. In addition to the central processing section 16, the control device 15 includes a ROM 20 having a program storage section 18 and a formula storage section 19, a RAM 23 having a temporary storage section 22, and a timer 24. There is.

Next, the operation of the present invention will be explained mainly with reference to the flowchart shown in FIG.

When a car (not shown) enters, for example, a fueling area A of a gas station, the engine of the car is rotating, and therefore the engine stop detector 13a detects electromagnetic waves caused by the rotation of the engine. When a pulse signal of electromagnetic waves from the engine's spark plug is input from the detector 13a to the central processing unit 16 via the input/output device 17, the central processing unit 16
calculates the engine rotation speed using the clock signal from the timer 24 and the calculation formula stored in the calculation formula storage unit 19, determines whether the engine is in good condition, and stores the result in the temporary storage unit 22. However, when a pulse signal is input, the temporary storage section 22
to store the signal while the engine is running. If the pulse signal is not input for a period of, for example, 200 msec or more, the engine is assumed to have stopped, and the engine driving signal is deleted. Then, when the operator removes the refueling nozzle 5 from the nozzle hook and pulls it toward the refueling area A, the nozzle switch SW turns on, and when the signal is transmitted to the central processing section 16, the central processing section 16
is determined to be a refueling request (step _S1 ). Next, when the hose is pulled toward the refueling area A, the micro switch 29a is turned on, and upon receiving this signal, the central processing section 16 determines that refueling is to be performed in the refueling area A (step S ₂ ).

Next, the central processing unit 16 checks whether or not the engine running signal is stored in the temporary storage unit 22, and if it is not stored, determines that the engine is stopped (step _S3 ), and makes these determinations. Finally, it is determined that refueling is possible, the previous refueling amount is returned to zero on the display meter 7, and the pump drive motor 1 is driven (step
_S4 ).

Then, normal refueling work is performed. During this refueling operation, the flow rate pulse signal from the pulse transmitter 6 of the flow meter 3 is transmitted to the display meter 7, and the refueling amount display meter 7 displays the amount of refueling. During refueling work, it is constantly determined whether the engine is stopped. That is, during refueling work, the nozzle switch SW is always on, so step _S5 is always YES.
Next, a pulse signal from the engine stop detector 13a is input, and it is constantly checked whether the signal is stored in the temporary storage section 22 (step
_S6 ). If the engine is started due to an erroneous operation, it is determined in step _S6 that the engine is running, the pump motor 1 is stopped, and refueling is stopped (step _S7 ). In addition, when the refueling work is finished, operate the nozzle lever to close the valve of the refueling nozzle 5, and hang the refueling nozzle 5 on the nozzle hook, the nozzle switch
The SW turns off and it is determined that refueling has ended (step
S ₅ ), and the pump motor 1 is stopped (step S ₇ ).

When the vehicle leaves the refueling area A, the detection signal from the vehicle detector 12a disappears, it is determined that the vehicle has left the vehicle, and the display on the display 8a disappears. In addition, when refueling on the refueling area B side, when the hose 4 is pulled toward the B side, the micro switch 29b is turned on, step _S2 is NO, step _S8 is determined to be refueling on the refueling area B, and from then on, the refueling area is The process proceeds to step _S7 via steps _S9 , _S10 , _S11 , and _S12 in the same manner as explained in the refueling at step A. In this way, refueling work is done using nozzle switch SW and micro switch 2.
Since refueling is performed only when 9a or 29b is turned on and there is no pulse signal from the engine stop detector 13a or 13b, refueling is not performed during engine startup, completely preventing the risk of ignition. can.

FIG. 6 shows an example in which the present invention is applied to a hanging fuel station. Therefore, parts corresponding to those in FIG. 1 are designated with the same reference numerals. In Figure 6,
For example, on the outer wall of the office O, there is provided an indicator 7 for the amount of refueling, as well as an indicator 8 for displaying the number of revolutions of the engine and the quality of the idling state of the engine. On the other hand, a hanging type refueling machine Sa is fixed to the canopy K.
A hose 4 having a refueling nozzle 5 at its tip is suspended from the hose. In this embodiment as well, the area below the refueling machine Sa is divided into refueling areas A and B.
Each refueling area A and B has a car detector 1
2a, 12b and engine stop detector 13a,
13b is provided. The refueling machine Sa is provided with switches 29a and 29b for determining whether refueling area A or B is to be refueled. The operation and effect of this embodiment are substantially the same as those of the previous embodiment.

As described above, the present invention provides the following excellent effects.

(1) The engine stop detector in the refueling area where the vehicle to be refueled is used to determine whether or not the engine of the vehicle is stopped, so there is no influence from vehicles in other refueling areas. .

(2) Since refueling cannot be performed unless the engine of the vehicle to be refueled is stopped, the risk of fire caused by engine sparks can be reliably prevented.

(3) Refueling efficiency is improved because there is no influence from other vehicles entering multiple refueling areas.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a refueling station in which the present invention is implemented, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a top view showing details of the refueling area discriminator, and FIG. FIG. 5 is a block diagram showing an example of a control device implemented, FIG. 5 is a flowchart showing a program of the control device implementing the present invention, and FIG. 6 is a perspective view of a gas station showing another embodiment. A, B... Refueling area, L... Island, S... Stand, SW... Nozzle switch, 5... Refueling nozzle, 13a, 13b... Engine stop detector, 15
...Control device, 26...Refueling area discriminator, 29a,
29b...Micro switch.

Claims (1)

[Claims] 1 A refueling request signal is output in response to a refueling request operation, which is an action of removing the refueling nozzle from the nozzle hook or an operation of lowering the suspended refueling nozzle, and then an operation of hanging the refueling nozzle on the nozzle hook or raising the suspended refueling nozzle. A single refueling device has a plurality of refueling areas, and includes a refueling display detector that outputs a refueling end signal in response to the operation, and enables refueling in response to the refueling request signal and disables refueling in response to the refueling end signal. At a refueling station, each refueling area is equipped with an engine stop detector that detects engine stoppage, and a refueling area discriminator that detects the moving direction of a refueling hose and determines the refueling area to be refueled, and the refueling area discriminator. Refueling is possible based on both the engine stop detection signal and the refueling request signal of the engine stop detector in the refueling area determined by the refueling device, and when an engine drive signal is issued from the engine stop detector in the refueling area during refueling. A refueling station characterized by comprising: a control device that controls to stop refueling.