JPS6058394A - Transmitter for information of quantity of lubrication - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Field of Application) The present invention relates to a refueling machine information transmission device, and in particular, a system for recording refueling data from a plurality of refueling machines installed at a refueling station. The present invention relates to a refueling star information transmission device for transmitting information to a V'7 (hereinafter abbreviated as PoS).

(Prior Art) FIG. 1 is a block diagram showing a schematic configuration of a conventional refueling information transmission device that is connected to a refueling station.

Usually, there are multiple refueling 8M1-i,1 units at a refueling station.
-2... is installed. As shown in the figure, each refueling cell 1, 1, 2, etc. sends a number of pulses corresponding to the amount of refueling m to a flow meter 10 that measures the amount of refueled gasoline m. The output pulse of the oscillator 11 and the output pulse of the oscillator 11 are iit rI! -! 1, a pulse counter 12, and an output circuit 13 that sends out the output pulses of the D device 11 to a signal line 19.

The output of the pulse counter 12 is displayed on a display 14. Further, the signal line 19 is a POS 20
connected to.

At such conventional refueling stations, as is well known, when the refueling nozzle is removed from the nozzle hook () at the J3 stationary refueling machine, the A3 refueling machine at the suspended refueling machine
When the nozzle drops to the refueling amount N, a refueling signal is issued.

This drives the pump. Then, after the nozzle is inserted into the car's fuel filler port, when the nozzle valve is pressed, refueling will begin. Then, when refueling is finished, the nozzle is hung on the nozzle latching button, but when the nozzle is moved upward from the refueling position, a refueling completion signal lights up.

Since the mechanism for this is well known, illustration thereof is omitted.

The flow rate of the refueled gasoline is 1it10;33
and is converted by the oscillator 11 into a corresponding number of pulse signals. This pulse signal is counted by a pulse counter 12 and supplied to a display 14 to display the amount of oil supplied.

At the same time, the pulse signal is sent out onto the signal line 19 via the output circuit 13 and supplied to the PO 320.

The PO 320 receives the pulse signal, calculates the J1 number, and calculates the refueling M and its charge, as well as processes other sales data and various administrative processes.

In such a conventional refueling information transmission device, a dedicated signal line 19 is used to transmit data between the refueling machines 1-1, 1-2, etc. and the POS 20. Therefore, special wiring work is required for that purpose.

Therefore, there is a drawback that the cost of additionally installing such a refueling information transmission device at an existing refueling station is high.

In order to improve the above-mentioned shortcomings, it is possible to use a dedicated signal line 19 and to send and receive information using the existing in-house distribution line - in other words, it is possible to apply distribution line carrier communication technology. Proposed.

According to this, it is not necessary to newly cover the signal line 19 with wiring, so that the initial equipment cost can be reduced. However, since power distribution lines are exposed in the air, noise such as static electricity and dielectric interference is often superimposed on them, and they also have the disadvantage that 1[1 loss fluctuations due to weather are large.

Furthermore, since the pulse signal is transmitted during the entire period of refueling by refueling 11-1. The disadvantage is that there is a high possibility of errors in the numerical results.

(Objective) The present invention has been made in order to eliminate the above-mentioned drawbacks, and its purpose is to apply power distribution line carrier communication technology,
An object of the present invention is to provide a refueling information transmission device that can transmit highly reliable refueling amount information between a refueling machine and a refueling machine.

(Summary) In order to achieve the above purpose, at the end of this book, the pulse signal was calculated by the refueling machine side, and the result was transferred via the distribution line. / There is a characteristic at point J.

(Example) The present invention will be explained in detail below with reference to the drawings.

FIG. 2 is a block diagram of an embodiment of the present invention, FIG. 3 is a diagram for explaining its operation, and FIG. 4 is a schematic diagram of the structure of the present invention. There are 11 JI function blocks.

In FIG. 2, the micro combi coater 21 may be a general-purpose one, and mainly includes a CPU 23, a mesh 22 (R
OM and 'RAM), 24 seats
and a common bus 25 which is an information transmission path between them.

The input/output interface 24 is connected to the oil supply 131-1 and the serial controller 26.

Serial controller 1 Herola 26 is Microphone 1” Nikon Bico.

- Converts parallel data output from the input/output interface 24 of the input/output interface 21 into serial data, and conversely converts external serial data supplied from the demodulator 28 into parallel data.

The modulator 27 modulates the serial data output from the serial controller 1-roller 26 and supplies the modulated signal to the coupling circuit 29. The coupling circuit 29 sends the modulated signal to the distribution line 30.

The modulated signal transmitted on the distribution line 30 is transmitted to the coupling circuit 3
1 to the PO 320, demodulated by the lever,
It is used for various performances and office processing as described in connection with the conventional example.

On the other hand, the demodulator 28 receives the modulated signal transmitted on the power distribution line 30 via the coupling circuit 29 and demodulates it. -La 2
The data is converted into parallel data at 6 33, and taken into the microphone 21 pinota 21 via the human output interface 5 chair 24. CI) jJ 23 processes this according to the scheduled procedure, and then the flow shown in FIG. 3!・The operation of the C1 embodiment will be explained with reference to -1-.

Step S1: Determine whether or not the refueling request signal is present.

If there is a refueling request signal, the process advances to step s2.

Step S2...CI) tJ 23 is a refueling request (ij
'; encode r.

Step S3...what) Interval 1 from O820! (i'
: 'I' indicating whether l'j (ENQ) signal was received
Perform the ll determination.

The timing signal ENQ is transmitted from I) O820,
It is incorporated into the microconverter 21 via the coupling circuit 31, the power distribution line 30, the coupling circuit 21), the demodulator 28, d3, and the serial controller L-roller 26. This interval U signal ENQ is transmitted from the POS 20 to each of the refueling machines 1-1.1-2. . . C1 is normally sent one after another.

Until the intermission signal [NQ is received, the micro=1-MBYU 21 is in a standby state and has received this intermission U signal.

Step S4...In the previous step S3, P O
When the make-shift signal from S20 is received, the CPU
23 encodes the refueling request signal encoded in step S2,
The signal is sent to the modulator 27 via the input/output interface 24J3 and the serial controller 26. Then, the modulator 27 modulates this refueling request signal at 13,
It is sent out onto the distribution line 30 via two coupling circuits.

Step S5: The modulated refueling request signal is sent from the distribution line 30 to the POS 20 via the coupling circuit 31. P OS 201;j, when the refueling request signal is correctly received, a reception confirmation signal (ACK
signal) to the relevant refueling aircraft.

On the fueling machine side, it is determined in step S5 whether or not the signal has been received at 80.

Then, it was received within the scheduled time (ilf i, 1st month ΔCK
If t! is not received, the process returns to step S3 again and the interval t! from the next POS 20 is received. In response to the request (the refueling request signal is sent out onto the distribution line again--that is, steps S3 and S/l are repeated.

In step S5, if the reception confirmation signal ACK from the PO 320 is received, the process proceeds to slap S6.

Step S6...Subsequently, the microphone [1-] monitor 21 on the refueling machine side determines whether or not the refueling correction signal from PO320 has been received. , the refueling machine is on standby.

Step S7...J3 c1PO to previous step S6
When the refueling permission signal of 820, IIJ is received, refueling: '[Encodes the signal available and sends the encoded signal to the 7111 aircraft 1-1. To this, J: So, the pump [
-1 is released and the oil supply pump starts operating.

As described above, refueling is actually carried out.
As mentioned above, is the pulse counter 12 fed? The 61 number of refueling pulses that are photogenerated in accordance with III■ begins.

Step S8: Regardless of whether refueling has been completed, it is determined whether the refueling end signal is valid or not.

Undershirt? III! 11 If there is a completion signal, the next step s9
Proceed to.

Step S9: Apply bomb block to stop the operation of the oil supply pump, and prevent it from starting its operation. At the same time, the output of the pulse counter 72 is taken into the CPU via the turntable interface chair 24, and the count value of the pulse counter 12 is encoded.

Step S10...Similar to the previous step S3, PO
320 is received, and waits in this state until it is received. If the timing signal is received, the next step S11
Proceed to.

Step 811...yI of encoded pulse counter
The numerical value is converted into serial data in a serial controller 26 and sent out onto a power distribution line 30 via a modulator 27 and a coupling circuit 29.

Step S12: Determine whether a reception confirmation signal (ACK signal) has been returned from the POS 20. If the reception (ffi confirmation signal ACK) is not transmitted within the scheduled time, step 811
Repeat the process of -0 at this step 312,
l) If the reception confirmation signal ΔCK is received from the OS 20, the refueling open information transmission operation from the refueling machine to the PO 320 ends.

In the above, data is transmitted from the refueling machine 1-1 to the POS 20 only once, and the same data is retransmitted only when the PO 320 side cannot receive it normally. It is also possible to transmit data two or more times and avoid retransmission when they do not match, or to adopt data determined to be correct according to majority logic.

In addition, when necessary on the refueling machine side, 1) send a transmission request to O8 at any time, and send the necessary data only after receiving and confirming permission No. 48 from Po8 side. Very nice, of course there is -C.

(Effects) As is clear from the above description, according to the present invention, the following effects are achieved.

(1) Instead of sending multiple refueling pulses over the entire refueling period, only one data indicating refueling fii is sent to PO3 after refueling, so the information transmission time is very short. y, ti <, and therefore the power line transport is less susceptible to noise. As a result, S,/NIL is improved, and errors in the old results and malfunctions can be prevented.

(Since it is easy to add an appropriate error check code (=J) to the 2-encoded refueling amount data, reliability can be further improved.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the general configuration of a conventional refueling information transmitting device installed at a refueling station, Fig. 2 is a block diagram of an embodiment of the present invention, and Fig. 3 shows the operation of A. It is a flow chart for explanation. 10... Current M meter, 11... Transmitter, 12... Pulse counter, 20... Po8.21... Microphone +-
1 memory, 22... memory, 23... CPU
, 24... Input/output internoace, 25... Common bus, 29. 31... Combined circuit, 30... Patent attorney for power distribution line Michito Hiraki and 1 other person

Claims (2)

[Claims] (1) A refueling information transmission device for transmitting refueling information in a refueling machine to a PoS connected via a power distribution line, such as a transmitter that outputs a pulse for each unit refueling car.
It is equipped with pulse counter means for counting the pulses of the oscillator C1, means for encoding the pulse counter 81 numerical signal, and means for modulating the encoded pulse counter count value signal and transmitting it to the distribution line. Refueling carrier information transmission equipment characterized by: (2) The transmission of encoded signals from the refueling machine onto the distribution line is as follows:
]] 1 distance from O8! (ENQ) A patent purchase characterized in that it is executed in response to receiving a signal.