JPH0118556Y2 - - Google Patents

Description

[Detailed explanation of the idea]

This invention is a double-type refueling device that has two refueling systems in a single housing, and both indicators corresponding to these refueling systems display the amount of refueling based on whether each refueling system is in the refueling state. The present invention relates to a refueling device that displays refueling amounts in an optimal combination. In recent years, there has been a demand from refueling staff or customers to visually confirm not only the amount of refueling but also the amount of refueling on a display provided in the refueling device. In order to meet these demands, in addition to the refueling amount display, we have developed a cash display type refueling device that has a separate dedicated display for displaying the amount of refueling, and is currently being used as a display for unused refueling systems. A display content changeover switch is provided to display the refueling amount corresponding to the refueling system, and by manually switching the switch, the refueling amount for the refueling system in use is displayed on the display of the unused refueling system. A refueling device (see Japanese Utility Model Application Publication No. 1983-72546) has been developed. However, in the case of the above-mentioned oil supply device,
A display dedicated to displaying the amount must be provided separately within the fuel supply device housing, which increases the size and cost of the device. Additionally, with the above-mentioned refueling system, there was a problem in that the refueling staff had to judge which refueling system was in use and change the display content changeover switch, which was cumbersome and prone to errors. . This idea was made in view of the above circumstances, and its purpose is to create a double-type refueling device that can display both the amount of refueling and the amount of refueling in the optimal combination depending on the refueling status. It is about providing. In other words, this idea is based on the tendency for the above-mentioned double-type oil supply device to also be equipped with a central processing unit (hereinafter referred to as CPU) such as a microprocessor, and to use this microprocessor to control oil supply, etc. In a double-type refueling device that has two refueling systems in a single housing, the system is installed in each refueling system and measures the amount of refueling supplied by the refueling system. a calculating means for calculating a refueling amount corresponding to the same amount of refueling; and a calculating means provided in each of the refueling systems to detect whether or not the refueling nozzle is in a predetermined storage position and to determine whether the refueling system is in a refueling state. a detection means for detecting whether or not the fuel supply system is present, and a detection means provided in each of the refueling systems, for selectively determining the refueling amount measured by the measuring means and the refueling amount calculated by the calculating means. a display capable of displaying a display, and when the detection means detects that only one of the two refueling systems is in a refueling state, an indicator of the one refueling system indicates that the refueling system is in the refueling state; At the same time, the amount of refueling for one of the refueling systems is displayed on the display of the other refueling system, and when the refueling of the refueling system is finished, this display state is maintained for a certain period of time, and both the refueling systems are displayed. If it is detected that both are in the refueling state, the display of each refueling system will display the refueling amount of the corresponding refueling system, and when refueling is completed, the display of the refueling system that has finished refueling will display the corresponding refueling amount. The present invention is characterized in that a display control means is provided for alternately displaying the amount of refueling in the refueling system and the amount of refueling for a certain period of time. According to such a configuration, it is detected whether or not the refueling nozzle is in a predetermined storage position, and only one of the two refueling systems is being refueled while the other refueling system is empty. If so, the amount of refueling will be displayed on the display of the refueling system that is being refueled, and the amount of refueling will be automatically displayed on the display of the vacant refueling system. Further, when both refueling systems are refueling, after refueling is completed, the refueling amount and refueling amount are automatically displayed on the display of each refueling system in a time-sharing manner. In other words, the display control means automatically switches the display contents based on the detection contents of the detection means, and in addition, for each refueling operation, the amount of refueling and the amount of refueling are displayed at any time during refueling or after the end of refueling. Both can be displayed. Hereinafter, one embodiment of this invention will be described in detail with reference to the drawings. In FIG. 1, this oil supply system includes a first oil supply system a and a second oil supply system b. The first oil supply system a in the main body 1 of this oil supply system includes a pump 3a connected to an oil storage tank (not shown) via a pipe 2a, a flowmeter 4a connected to the outlet side of this pump 3a, and a flowmeter 4a connected to the outlet side of this pump 3a. Piping 5a connected to the outlet side of 4a, a refueling nozzle 6 at the tip
A refueling hose 7a having a base end connected to the piping 5a is provided. The pump 3a is driven by a pump motor 8a, and the flow meter 4a is provided with a flow pulse generator 9a that generates a flow pulse Pa for each unit flow rate (for example, 0.01) of oil. ing. Moreover, in the nozzle case 10a of the refueling nozzle 6a,
When this refueling nozzle 6a is removed, it closes and the nozzle switch signal NSa (binary logic signal "1" signal)
A nozzle switch 11a is provided for outputting. In this main body 1, each part of the second oil supply system b is constructed in exactly the same manner as each part of the first oil supply system a, and each corresponding part is marked with a suffix b. A control/display unit 1 is provided on the upper part of the main body 1.
2 is provided. This control/display unit 1
2 is provided with a display 13a corresponding to the first oil supply system a and a display 13b corresponding to the second oil supply system b. Display device 13a, 1
3b, as shown in FIGS. 2 and 3, respectively,
5-digit 7-segment numerical display element 14a _-1 to 14
a _-5 , 14b _-1 to 14b _-5 and a decimal point display placed between the second and third digits of each of these number display elements 14a _-1 to 14a _-5 , 14b _-1 to 14b _-5 Element 15
a, 15b, and the numerical display element 14 of each most significant digit.
¥ display elements 16a, 16b for displaying the refueling amount arranged near the left of a -5, 14b _-5 , and refueling arranged near the right of each lowest digit numerical display element 14a _{-1 ,} 14b _-1 It is configured to include display elements 17a and 17b for displaying the amount. In addition, Figure 2 shows
An example is shown in which the amount of refueling is ``40.00 liters'' and the amount of refueling is ``6,600 yen'' in Figure 3. Next, FIG. 4 is a block diagram showing the circuit configuration in this embodiment. In this figure, the measurement/calculation circuit 18a corresponding to the refueling system a measures the amount of refueling in the refueling system a, calculates the amount of refueling, etc., and is connected to a CUP 19a.
It is configured to include a memory 21a connected to the signal bus 20a of this CUP 19a, and an input/output interface 22a connected to the signal bus 20a. The input/output interface 22a includes, for example, the control/display unit 12.
The unit price data UPDa output by the unit price setting device 23a (corresponding to the refueling system a) provided on the back of the
Flow rate pulse outputted by the flow rate pulse generator 9a
Pa, a nozzle switch signal NSa output from the nozzle switch 11a, and the like are input. The measurement/arithmetic circuit 18a receives a signal, for example.
While NSa is “1”, the pump motor 8a
The drive signal PMPa is supplied to the pump motor 8a.
is driven to perform refueling, and the amount of refueling is determined by measuring (counting) the flow rate pulse Pa input at this time.Furthermore, the amount of refueling is multiplied by the unit price data UPDa to calculate the amount of refueling. Then, refueling amount data ODa indicating the refueling amount obtained in this way,
The refueling amount data OPDa is output to the display control circuit 24. In this figure, each part corresponding to the oil supply system b is constructed in exactly the same manner as each part in the oil supply system a, and each corresponding part is marked with a suffix b. Next, the detailed configuration of the display control circuit 24 will be explained with reference to FIG. This display control circuit 24 is
Display data on display 13a corresponding to refueling system a
a data output circuit 25a for supplying DDa;
Display data on display 13b corresponding to oil supply system b
a data output circuit 25b for supplying DDb;
It is configured to include a logic circuit 26 that controls both data output circuits 25a and 25b based on nozzle switch signals NSa and NSb. In this case, the data output circuit 25a has its control input terminals X, Y
Depending on the state of the binary logic signal supplied to the controller, the refueling amount data ODa, refueling amount data OPDa, and refueling amount data OPDb are outputted as display data DDa in the combinations shown in Table 1.

[Table] Furthermore, the data output circuit 25b also outputs display data DDb according to Table 2 in the same manner as above.

[Table] Next, the operation of the display control circuit 24 will be explained with reference to the flowchart shown in FIG. First, when both oil supply systems a and b are in a non-lubrication state, both nozzle switch signals NSa and NSb are "0".
It's a signal. In this case, in the logic circuit 26,
The outputs of the inverters 27 and 28 are both "1" signals, but the outputs of the monostable multivibrators (hereinafter referred to as MM) 31 and 32 are "0" signals. Therefore, AND gates 40 and 43 both output "0" signals, and OR gates 34 and 35
Since both outputs are "0" signals, AND gates 41 and 42 also output "0" signals. Therefore, the signals at the control input terminals X and Y of the data output circuits 25a and 25b are all "0". By the way, in this case, since both systems a and b are not being refueled, the previous refueling amounts for systems a and b are displayed on the displays 13a and 13b, respectively. That is,
In this case, in FIG. 6, steps S ₁ →S ₂ →
A loop called _S1 is being performed. Next, when the nozzle switch 11a is closed and refueling of system a is started, the signal NSa becomes "1".
It becomes a signal. In this case, AND gate 40 still outputs a “0” signal, but OR gate 34
outputs a "1" signal, so the AND gate 41 outputs a "1" signal (note that at this time, the SR flip-flop (hereinafter referred to as FF) 44 is in a reset state). Therefore, in this case, the signals at the terminals X and Y of the data output circuit 25a are "0" and "0", and the signals at the terminals X and Y of the data output circuit 25b are "0" and "1", and the display In 13a and 13b,
The amount of refueling for system a and the amount of refueling for system a are displayed. That is, in this case, a loop of steps S ₃ →S ₄ →S ₅ →S ₃ is performed in FIG. Next, from the above state, if the nozzle switch 11a is opened and the refueling of system a is completed, the signal
NSa returns to “0” again. Then, the MM ₃₁ outputs a "1" signal for a time τ, and as a result, the OR gate 34 continues to output a "1" signal during this period. Therefore, the AND gate 41 continues to output a "1" signal during this time, and then outputs a "0" signal. In other words, in this case, the data output circuit 25b
The signals at terminals X and Y of
After time τ, it becomes “0”, “0”. Therefore, the display 13a continues to display the refueling amount of system a, but the display 13b continues to display the refueling amount of system a for the time τ, and then displays the refueling amount of system b (in this case, the previous refueling amount). ) will be displayed. That is, in this case, steps S ₆ , S ₇ and steps in FIG.
S ₈ will be executed. On the other hand, as mentioned above, if refueling of system b is started while refueling of system a is being performed, the signal NSb becomes a "1" signal, and as a result, the AND gate 36 opens and the FF ₄₄ is activated. is set.
Then, the AND gate 41 closes and outputs a "0" signal, so the data output circuits 25a,
All the signals at the terminals X and Y of 25b become "0" signals. Therefore, in this case, the respective oil supply amounts of the systems a and b are displayed on the indicators 13a and 13b, respectively. That is, in this case, the loop of steps _S3 to _S5 in FIG. 6 shifts to the loop of steps _S9 to _S11 . Next, in the above state, when refueling of system b is completed, the signal NSb shifts to "0", and the MM ₃₂ outputs a "1" signal for a time τ. Then, the AND gate 43 outputs a "1" signal during this time. Therefore, in this case, the signals at the terminals X and Y of the data output circuit 25b become "1" and "0" for the time τ, thereby causing the display 13b to
The refueling amount and refueling amount for system b are displayed in a flickering manner. That is, in this case, a loop of steps S ₁₂ →S ₁₃ →S ₁₄ →S ₁₂ is performed in FIG. Next, when this time τ has passed,
The output of MM ₃₂ returns to the “0” signal, which causes
MM ₃₃ outputs a very short "1" pulse signal. However, depending on this signal
FF ₄₄ is not reset. However, at this time, the output of the AND gate 43 returns to the "0" signal due to the output of the MM ₃₂ , so the display 13b again displays only the oil supply amount of the system b. That is, in this case, step _S13 in FIG.
→S ₁₄ →S ₁₅ →S ₁₆ →S ₁₃ loop is executed. Next, assume that the refueling of system a has also been completed in the above state. In this case, the MM ₃₁ outputs a "1" signal with a width of time τ, which opens the AND gate 40, so that the signals at the terminals X and Y of the data output circuit 25a are "1" and "0" only during this period. ” becomes.
Therefore, during this time, the display 13a shows the system a.
The amount of refueling and the amount of refueling are displayed flickering. That is, in this case, in FIG.
A loop of S ₁₃ →S ₁₇ →S ₁₄ →S ₁₅ →S ₁₆ →S ₁₃ is performed. Then, after this time τ has elapsed, MM ₃₁
When the output of the MM 33 changes from a "1" signal to a "0" signal, the MM ₃₃ outputs a "1" pulse signal, thereby resetting the FF ₄₄ . All states then return to their initial states. That is, in this case, step _S18 is executed in FIG.
The display units 13a and 13b each display the amount of oil supplied to systems a and b (current amount of oil supplied). As shown in FIG. 6, the display mode is configured to change in a completely symmetrical manner depending on the operating states of the oil supply systems a and b. Also, for reference, a time chart of signals of each part of the display control circuit 24 is shown in FIG. In FIG. 7, the output of each OR gate is represented by the signal name OR, and the output of each AND gate is represented by the signal name AND. In this way, according to this embodiment described above, the amount of refueling is displayed on the display of the refueling system during refueling, and the amount of refueling is displayed on the display of the same system if the other refueling system is not refueling at this time. It is possible to display the refueling amount for the refueling system that is being refueled. Furthermore, in this case, when the refueling of the refueling system that is being refueled is completed, the refueling amount of the refueling system for which refueling has been completed can be displayed for a time τ on the display of the other refueling system. According to this embodiment, when both refueling systems are refueling, each indicator displays the refueling amount of the corresponding refueling system, and when one of the refueling systems finishes refueling from this state, the display for that system The refueling amount and refueling amount for the same system are displayed flickering for the time τ. As is clear from the above explanation, the refueling system according to this invention is a double type refueling system, and when it is detected that only one of the refueling systems is being refueled, the indicator of the refueling system that is currently being refueled is displayed in the same manner. In addition to displaying the refueling amount of the refueling system, the display of the other refueling system displays the refueling amount of the refueling system that is being refueled, and when refueling is completed in this state, the display of the other refueling system displays the refueling amount. The refueling amount for the system that has finished refueling is displayed for a certain period of time, and when both refueling systems are in the refueling state, each display displays the refueling amount for the corresponding refueling system, and in this state, the refueling amount for either of the refueling systems is displayed. When refueling is completed, the refueling amount and refueling amount for each refueling system are flickered for a certain period of time on the display of the refueling system where refueling has been completed, so the refueling amount and refueling amount for each refueling system are It is possible to display effectively by using the system display devices in an optimal combination. Therefore, according to this invention, since only two indicators are required, the device can be provided at low cost.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an embodiment of a refueling device according to this invention, FIGS. 2 and 3 are plan views showing the configuration of indicators 13a and 13b in the same embodiment,
FIG. 4 is a block diagram showing the circuit configuration in the same embodiment, FIG. 5 is a circuit diagram showing the structure of the display control circuit in the same embodiment, and FIG. 6 is a flowchart for explaining the operation of the display control circuit. , FIG. 7 is an operation time chart of the display control circuit. 1...Main body, 11a, 11b...Nozzle switch (detection means), 13a, 13b...Display device, 1
8a, 18b...Measurement/calculation circuit (measurement means and calculation means), 24...Display control circuit (display control means), a...first oil supply system, b...second oil supply system.

Claims (1)

[Scope of Claim for Utility Model Registration] In a double-type oil supply device having two oil supply systems in a single housing, a measuring means provided in each of the oil supply systems to measure the amount of oil supplied by the oil supply system; , a calculation means for calculating a refueling amount corresponding to the same amount of refueling; and a calculation means provided in each of the refueling systems to detect whether or not the refueling nozzle is in a predetermined storage position to determine whether or not the refueling system is in a refueling state. and a detection means for detecting whether the refueling amount is calculated by the calculation means, and a detection means provided in each of the refueling systems and capable of alternatively displaying the refueling amount measured by the measuring means and the refueling amount calculated by the calculation means. a display, and when the detection means detects that only one of the two refueling systems is in the refueling state, the display of the one refueling system displays the refueling amount of the refueling system; At the same time, the amount of refueling for one of the refueling systems is displayed on the display of the other refueling system, and when refueling of the refueling system is completed, this display state is maintained for a certain period of time, and both refueling systems are refueled. If this condition is detected, the amount of refueling for the corresponding refueling system is displayed on the display of each refueling system, and when refueling is completed, the display of the refueling system that has finished refueling displays the amount of refueling of the corresponding refueling system. A refueling device characterized by being provided with display control means for alternately displaying the amount of refueling and the amount of refueling for a certain period of time.