FUEL DELIVERY DISPLAY AND CONTROL SYSTEM

Abstract: Fuel delivery display and control system having a dot-matrix panel (11) on which normally a first message is indicated but when a nozzle (13) is taken up for fuel delivery said first message is replaced with a second message with scrolling for confirmation of no faults in the display system which is replaced with fuel delivery information consisting of a unit volume price, a delivered fuel volume and a total price to be paid. If necessary, in advance of taking up the nozzle (13), a related switch (MS₂) can be manually actuated so that the delivered fuel volume only is indicated on the panel (11).

Description: FIELD OF THE INVENTION AND RELATED ART This invention relates to a fuel delivery display and control system, and more particularly to such system having a dot-matrix display on which fuel delivery informations and messages are selectively indicated. On the conventional display panel of the seven-segments type for the fuel dispenser, generally a volume of the delivered fuel only has been indicated. Recently, however, it is desired to indicate a unit volume price and a total price to be paid by the customer, in addition thereto. Such dispenser as capable of doing so may be occasionally found. When using the so-called dot-matrix display panel having many small display units such as light bulbs, ligh emission diodes, liquid crystal segments and the like arranged for instance in 8 x 40 to be energized in reply to information stored in memory means, it is possible to indicate not only numerical figures for the fuel delivery informations but also letters or alphabets for advertisement or slogan e.g. "In Special Sale of Tires" different from the seven segments display usual in the gasoline station. SUMMARY OF THE INVENTION An object of the invention is to provide a fuel delivery display and control system whereby it is made possible to normally indicate a first message on a dot-matrix display pannel in scrolling way and automatically change such indication by taking up a hose nozzle from a hook therefor to display of all fuel informations, namely the unit volume price, the volume of the delivered fuel and the total price to be paid by the customer, which may be changed to a display of only said volume of the delivered fuel by manual actuation made in advance. Another object of the invention is to provide the system as referred to above, whereby it is made possible to confirm if there is no trouble in the display system by indicating a second message in scrolling way before said change of indication on the display panel. A further object of the invention is to provide the system as referred to above, whereby it is made possible to utilize a half of the dot-matrix display panel other than the other half where the trouble exists. Said objects can be attained according to the invention, by providing a fuel delivery display and control system which comprises a dot-matrix dispaly panel having many elements so arranged that the energized elements may represent not only numerical figures but also letters and alphabets, means for energizing said elements in accordance with supplied signals, memory means for storing a desired message, memory means for storing a unit volume price, means for generating pulse signal representing fuel volume, means for totalling a delivered fuel volume according to the supplied pulse signal and storing said total volume, means for calculating a total price of the fuel from said unit volume price and said delivered fuel volume and storing said total price, and switching means arranged between said memory means and said energizing means so as to switch over from normally supplied message signal to fuel informations in reply to a signal of commencing fuel delivery, and preferably said desired message storing means consists of memoery means for storing the first message and memory means for storing the second message both to be indicated on said display panel in scrolling way and preferably further comprises a switch adapted to be normally in "OFF" position but changed to be in "ON" position when a nozzle is taken up for commencing fuel delivery so as to erase stored informations on the delivered fuel volume and the total price of the last fuel delivery, and actuate said switching means to switch over from the normally supplied first message to said second message and then to fuel informations after termination of the second message display. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a fuel dispenser incorporating the fuel delivery display and control system according to the invetion, Fig. 2 is a block diagram illustrating functions processed by variuos means inclusive of microcomputers contained in said dispenser casing and mounted on the casing wall so as to carry out said fuel delivery display and control, Fig. 3 is a flow chart of operation of the above, Figs. 4A and 4B are front views of the display panel showing respectively all of the unit volume, the volume of the delivered fuel and the total price to be paid by the customer, and the delivered fuel volume only, Fig. 5 is a similar view showing a message, "In Special Sale Of Tires" in Japanese virsion, Figs. 6A and 6B are similar views showing a message, "Welcome" in Japanese virsion with laterally scrolling, Figs. 6C and 6D are similar views showing the same message with vertical scrolling, In Fig. 1, the fuel dispenser represented generally by 10 comprises display panel 11 of the dot-matrix type, which may selectively indicate fuel delivery informations and a desired message, mounted on the front wall of the upper casing. There is a designation such as "REGULAR" under said display panel. The left half shown by phantom lines may be a dispenser for the other sort of fuel, e.g. for the diesel engine vehicles. On the side wall, there is provided a receptacle 12 in which a nozzle 13 mounted at the free end of a flexible hose 14 may be hung so that a nozzle switch 15 arranged in said receptacle is normally kept in "OFF" position. When said nozzle 13 is taken up from said receptacle 12, said switch 15 is automatically actuated to be in "ON" position. According to the conventional dispenser, however, a motor is directly energized thereby to drive a pump for fuel delivery so that when actuating a trigger the fuel is discharged through said nozzle and the last fuel informations are reset to "zero" thereby. In the system of the invention, the first message normally appearing in scrolling way on the display panel, e.g. "In Special Sale Of Tires" as shown in Fig. 5 in the Japanese virsion is changed to the second message e.g. "Welcome" appearing in the scrolling way which may be utilized for confirming if all dots such as small light tubes, light emission diodes and liquid crystal segments are active to indicate correct delivery informations as explained later in more detail. On said side wall there is arranged further a key and switch board 16 for inputting numerical figures representing the unit volume price, e.g. ¥173 per litre set for the day and alphabets or letters of the desired messages to be stored in concerned memories, which may be confirmed by a small display panel illustrated above said board 16. In the casing there are installed a fuel flow meter, a flow pulse generator, memory means, control means and the like in addition to the motor and the pump. In the block diagram of Fig. 2 for showing mainly divided functions of the microcomputers, any desired messages are input from the key-board 16 shown at the left-top therein into message memory means M₁ and M₂. For instance the first message, "In Special Sale Of Tires" is stored in said memory M₁ so as to normally appear in the scrolling way in the display panel 11 (DP₁ + DP₂) of the dot-matrix type (Fig. 5) shown at the right-top in Fig. 2. Energizing means E (E₁ + E₂) energizes luminous elements of the display panel corresponding to signals given from said memory means M₁. The second message, e.g. "Welcome" stored in the second memory means M₂ appears on the panel 11 (DP₁ + DP₂) through said energizing means E (E₁ + E₂) in the transversely or longitudinally scrolling way (6A, 6B; 6C, 6D) when the hose nozzle 13 is taken up from the receptacle 12 in order to begin the fuel delivery, instead of said first message. Depending on letters or alphabets of this second message, it is not always possible to relevantly find out the fault of the luminons elements. Thus it is preferable to energize at least one vertical row (In Figs. 6A and 6B, two rows) of the elements to transversely scroll together with said letters or alphabets. When the message is indicated with vertically scrolling, at least one transverse row (In Figs. 6C and 6D, two rows) of the elements to vertically scroll together with the message. In the specification and the Claims, the second message includes at least one vertical or transverse line in said meaning. This switchover of the message is made in such a way that switching means SW which is arranged between said memory means M₁, M₂ and said energizing means E is actuated by a signal given when the nozzle switch 15 is changed to the "ON" position. When one or more luminous elements of the dot-matrix are down, the fuel delivery informations appearing on the panel can not be correctly read. It is thus preferable to confirm if all elements are energized before commencing the fuel delivery. For that purpose all elements can be energized, but this requires to design the concerned means to be of high electric capacity and consequently the concerned cost is considerably raised. According to the invention said second message is utilized therefor. In Figs. 6A and 6B, for instance luminous elements of vertical two rows and letters representing said message are successively energized so as to scroll from the right to the left whereby it is possible to find if there is any trouble. Figs. 6C and 6D show the vertically scrolling message. Electric capacity of the concerned means can be made low thereby, say at least about 30%. When any trouble which may adversely affect on the correct reading of the fuel delivery informations is found, a switch MS₁ is manually actuated so that an activating means AC arranged between said switching means SW and energizing means E₁, E₂, is adapted to activate either of said means E₁ and E₂ to display the delivered fuel volume only on either of the first half DP₁ and the second half DP₂ of the dot-matrix display panel 11, as an emergency measure. Said switching means SW is so designed as to energize a motor M for driving the fuel delivery pump and switch over the display from the second message to the fuel delivery informations after the termination of the second message. The unit volume price for the day is stored in advance in memory means F₁ from the key-board 16. A totalling means F₂ determines a total volume of the delivered fuel according to a pulse signal from a flow pulse generating means FPG. A calculating means F₃ calculates the total price to be paid by the customer from the numerical figures stored in memory means F₁ and the totalling means F₂. Generally all of said numerical figures stored in memory means F₁, totalling means F₂ and calculating means F₃ are indicated on the display panel 11 (DP₁ + DP₂) as shown in Fig. 4A through said switching means SW, activating means AC and energizing means E (E₁ + E₂). When it is necessary to indicate only the numerical figures stored in said means F₂, a second switch MS₂ on said key-board 16 is manually actuated before taking up the nozzle from the receptacle and consequently during the nozzle switch 15 is in "OFF" position so that in reply to a signal generating means SG the fuel informations stored in F₁ and F₃ are adapted not to be read out. When the hose nozzle is hung in the receptacle, the nozzle switch 15 is brought again in "OFF" position whereby a motor controlling means MC opens the circuit to stop the motor M and said switching means SW is activated so as to indicate the first message stored in the memory means M₁ after the lapse of a predetermined time which is set in a clocking means CL. When it is necessary to read out the fuel delivery informations again on the display panel, a third switch MS₃ is manually actuated in reply to which the switching means SW switches over the display from the message to the desired fuel informations still stored in memory means F₁, totalling means F₂ and calculating means F₃. Now in reference to the flow chart of Fig. 3, steps of the operation will be explained. When opening the gasoline station, the main switch (not shown) is closed so that the operation is started to indicate the first message, "In Special Sale Of Tires" on the display panel 11 in the scrolling way (Step 1). When the nozzle 13 is taken up in order to commence the fuel delivery, and consequently the nozzle switch 15 is changed to be in "ON" position (Step 2), the numerical figures of the last fuel delivery stored in memory means F₂ and F₃ are respectively reset to "zero" and the second message "Welcome" appears with scrolling on the display panel 11 (Step 3). When said scrolling second message is over (Step 4), numerical figures of fuel informations, e.g. 173 (Yens per liter) as the unit volume price, 0 as the volume of delivered fuel and 0 as the total price to be paid, appear on the display 11 according to the informations then stored in means F₁, F₂ and F₃ and the motor M of driving the pump is energized (Step 5). When the fuel delivery is commenced by actuating the trigger of the nozzle 13, the flow pulses generating means FPG supplys pulses to the totalling means F₂ which integrates said pulses to total the amount of the delivered fuel and the calculating means F₃ proceeds with multiplication of figures from means F₁ and F₂ to display the calculated figures on the display panel 11 (Step 7). When the requested volume of fuel has been delivered, the nozzle 13 is hung on the hook again whereby the nozzle switch 15 is changed to be in "OFF" position (Step 8). Thereby the pump motor M is deenergized (Step 9). After the lapse of a predeter­ mined time (Step 10), the clocking means CL actuates the switching means SW to switch over from the fuel informations display to the first message display (Step 11). During said delay, the fuel informations can be read, but if necessary the switch MS₃ is manually actuated for reappearance so that the switching means SW is actuated (Step 12) to display the fuel informations again (Step 13). When said switch MS₃ is manually actuated to be in "OFF" position (Step 14), the situation is returned to the Step 11 where the first message is displayed. When the nozzle 13 is taken up to deliver the fuel for a new customer, the situation is returned to the Step 2 for repeating said process.

Claims: 1. A fuel delivery display and control system comprising a dot-matrix dispaly panel having many elements so arranged that the energized elements may represent not only numerical figures but also letters and alphabets, means for energizing said elements in accordance with supplied signals, memory means for storing a desired message, memory means for storing a unit volume price, means for generating pulse signal representing fuel volume, means for totalling a delivered fuel volume according to the supplied pulse signal and storing said total volume, means for calculating a total price of the fuel from said unit volume price and said delivered fuel volume and storing said total price, and switching means arranged between said memory means and said energizing means so as to switch from normally supplied message signal to fuel informations in reply to a signal of commencing fuel delivery. 2. The system as set forth in Claim 1, in which the desired message storing means consists of memory means for storing the first message and memory means for storing a second message both to be indicated on said display panel in scrolling way and the system further comprises a switch adapted to be normally in "OFF" position but changed to be in "ON" position when a nozzle is taken up for commencing fuel delivery so as to erase stored informations on the delivered fuel volume and the total price of the last fuel delivery, and actuate said switching means to switch from normally supplied first message to said second message and then to fuel informations after termination of the second message display. 3. The system as set forth in Claim 2, wherein the second message includes at least one vertical or transverse line. 4. The system as set forth in Claims 2 and 3, which further comprises a key-board so as to input any desired first and second messages and the unit volume price in the respectively concerned memory means. 5. The system as set forth in any one of Claims 2 to 4, which further comprises motor control means to be actuated in reply to a signal given from said switching means after the switchover from the first message display mode to the second message display mode to energize a motor for driving a pump after termination of the second message display. 6. The system as set forth in any one of Claims 2 to 5, which further comprises means for controlling fuel informations which may be manually actuated so as to prohibit supplying informations of the unit volume price and the total price to said energizing means. 7. The system as set forth in any one of Claims 2 to 6, which further comprises means for controlling display, said dot-matrix display panel being divided into two halves to be energized by two energizing means, so that when any trouble is found by seeing the scrolling second message said display controlling means is manually actuated to use either one half of the display panel where there is found no trouble and concerned energizing means. 8. The system as set forth in any one of Claims 2 to 7, in which said switching means has clocking means and is adapted to change over from the fuel informations display to the first message display after the lapse of a predetermined time set in said clocking means in reply to hanging of the nozzle to make said concerned switch to be in "OFF" position. 9. The system as set forth in Claim 8, in which said switching means is adapted to be manually actuated so as to change over from the first message display to the fuel delivery informations display.

Inventors: ISHIBASHI, KAZUHIRO, OKANIWA, HIROYUKI, SHIMAMURA, NORIO, TAKABAYASHI, MASARU
Applicants: TOKYO TATSUNO COMPANY LIMITED
Application year: 1986
Main classification: B67D5
IPC codes: B67D7