Troubleshooting Method and Troubleshooting System for Fuel Dispenser System Display Faults

Abstract

Troubleshooting device for display faults in a fuel dispenser system, including a display fault detection module 22, a counting module 23, and a storage module 24. Information about all channels and addresses of the display 3 is stored in the storage module 24. During troubleshooting, the display fault detection module 22 generates authentication information, which is sent to the bus in combinations of different channels and addresses. The channels and addresses for sending the authentication information are combinations of all channels and addresses stored in the storage module 24, covering all combinations of channels and addresses set through jumpers in the display 3. Therefore, even if a jumper error occurs, resulting in different channels or addresses of the display 3 from the information stored in the storage module 24, the display can receive the authentication information and perform a display. Staff can determine whether a jumper error has occurred and the location of the jumper error based on the displayed numbers or text instructions, in combination with the expected channels and addresses of the display.

Description

Technical Field

[0001] The present invention relates to a method and a system for troubleshooting display faults in a fuel dispenser system, and particularly to the automatic detection of display faults in a fuel dispenser system. Background Art

[0002] The fuel dispenser system consists of a controller, multiple fuel nozzles, and multiple displays for displaying refueling information. When a fuel nozzle is lifted for refueling, the refueling volume information of the fuel nozzle is sent to the controller. After being calculated by the controller, refueling information such as refueling volume, unit price, total price, etc. is obtained. The refueling information is sent to the display corresponding to the fuel nozzle for display. That is, each display has different channels and addresses, and the channel and address information of each display is stored in the controller. When the controller receives the refueling information sent by the fuel nozzle, it reads the corresponding channel and address information of the fuel nozzle, and sends the refueling information to the corresponding display for display according to the read channel and address.

[0003] The displays usually set channels and addresses by means of jumpers. That is, multiple channels and addresses are pre-stored in the memory of the display, and different combinations are selected as the channels and addresses of each display by means of jumpers.

[0004] However, in this setting method, once the jumper position is incorrect and the display cannot receive the refueling information sent by the controller, the display screen will not light up. In addition to the incorrect jumper position, faults in the display itself can also cause the display screen not to light up.

[0005] Therefore, maintenance personnel cannot determine the location of the fault where the display screen does not light up. The usual treatment method is to replace the display. If the display screen still does not light up after excluding the display fault, further troubleshooting is carried out, such as checking whether the jumper terminals of the display are incorrect. Since the number of jumper terminals of the display is large, troubleshooting step by step not only requires a large amount of work and cost. And the entire fuel dispenser system needs to stop working, seriously affecting the normal operation of the gas station and causing unnecessary economic losses.

[0006] The present invention provides a method and a system for troubleshooting display faults in a fuel dispenser system, which can automatically detect display faults in the fuel dispenser system. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides a method for detecting display faults in a fuel dispenser system. The fuel dispenser system includes a controller 2, multiple fuel nozzles 1 connected to the controller 2 through connecting wires, and multiple displays 3 connected to the controller 2 through a bus. The controller 2 receives pulse information sent by each fuel nozzle 1, generates refueling information, and sends the refueling information to each display 3 corresponding to each fuel nozzle 1 through the bus for display.

[0008] The display fault detection method includes the following steps: In the first step, the controller 2 generates m authentication messages and sends one of the authentication messages to the display 3. Each authentication message contains information about a channel and information about an address, and the combinations of the channel information and the address information included in any two authentication messages are different. In the second step, the display 3 receives the authentication message, performs authentication, and obtains an authentication result. If the authentication result is yes, it displays the channel information and the address information in the authentication message, generates a response message, and returns the response message to the controller 2. Otherwise, it does not display the channel information and the address information in the authentication message and does not generate a response message. In the third step, if the controller 2 receives the response message or does not receive the response message within a preset time, it sends another authentication message to the display 3.

[0009] In the fourth step, the display 3 receives the authentication message, performs authentication, and obtains an authentication result. If the authentication result is yes, it displays the channel information and the address information in the authentication message, generates a response message, and returns the response message to the controller 2. Otherwise, it does not display the channel information and the address information in the authentication message and does not generate an authentication message. In the fifth step, repeat the third step until all m authentication messages are sent in sequence. Among them, if the display 3 performs display, it is determined that the display 3 has no fault. Otherwise, it is determined that the display 3 has a fault. The display 3 has x channels and y addresses, where x = y ≥ 2 and m = xy.

[0010] In the present invention, the controller sequentially sends authentication messages to the display. The display receives the authentication messages and performs display after successful authentication. When the display performs display, it indicates that the display has no fault. When the display does not perform display, it indicates that the display has a fault.

[0011] By displaying the channel information and the address information in the authentication message on the display that receives the authentication message, the staff can view the channel information and the address information of the channels connected to the display through the display, which is convenient for the staff to reconfigure the misconfigured display.

[0012] Preferably, in the third step, if the controller 2 does not receive the response message within 1 s, it sends another authentication message to the display 3.

[0013] By setting that if the controller does not receive the response message within 1 s, it sends another authentication message to the display, the influence on the detection result caused by information reception delay due to signal problems can be prevented.

[0014] Preferably, in the third step, if the controller 2 does not receive the response message within 1 s, it repeatedly sends the same authentication message to the display 3 twice, and then sends another authentication message to the display 3.

[0015] Repeatedly sending the authentication information through the controller can increase fault tolerance, prevent inaccurate detection caused by packet loss of the authentication information, and improve the accuracy of the detection result.

[0016] Preferably, in the second step and the fourth step, when the display 3 receives the authentication information, authentication is performed. The authentication process is to identify the information of the channel and the information of the address in the authentication information. By comparing the information of the channel and the information of the address configured in the display 3 with the information of the channel and the information of the address in the authentication information, an authentication result is obtained; the information of the channel and the information of the address configured in the display 3 are pre-stored in the display 3.

[0017] The present invention can detect the cause of the display failure of the fuel dispenser display, quickly locate whether the display failure of the fuel dispenser display is a display failure or a wiring error, facilitate the staff to quickly perform repairs, and reduce the losses of fuel dispenser manufacturers and gas stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 . Overall explanatory diagram of the fuel dispenser system;

[0019] Figure 2 . Schematic diagram of the main modules of the controller and the display in the fuel dispenser system;

[0020] Figure 3 . Flowchart of sending the first authentication information in the process of troubleshooting the display failure of the fuel dispenser system;

[0021] Figure 4 . Flowchart of sending the second authentication information in the process of troubleshooting the display failure of the fuel dispenser system;

[0022] Figure 5 . Flowchart of sending the third authentication information in the process of troubleshooting the display failure of the fuel dispenser system;

[0023] Figure 6 . Flowchart of sending the fourth authentication information in the process of troubleshooting the display failure of the fuel dispenser system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following elaborates on the preferred embodiments of the present invention in conjunction with the accompanying drawings. The reference numerals refer to the components and technologies in the present invention, so that the advantages and features of the present invention can be more easily understood in a suitable environment. The following description is a concretization of the claims of the present invention.

[0025] As Figure 1As shown in the figure, the fuel dispenser system consists of a controller 2, four fuel nozzles 1, and four displays 3. The four fuel nozzles, namely the first fuel nozzle 1a, the second fuel nozzle 1b, the third fuel nozzle 1c, and the fourth fuel nozzle 1d, have the same structure. When the nozzle is lifted, fueling starts, and an encoder inside generates pulse data corresponding to the fuel volume during fueling. The controller 2 generates fueling data based on the pulse data sent by each fuel nozzle 1. The controller 2 is connected to the four displays 3, namely the first display 3a, the second display 3b, the third display 3c, and the fourth display 3d, through a bus (not shown). The channel and address information of each display 3 is stored in the memory of the controller 2, and the controller 2 sends the fueling data to the corresponding display 3 for display according to the preset channel and address information.

[0026] In this embodiment, information on 8 channels and 8 addresses is pre-stored in the memory of each display 3, and the channels and addresses of each display 3 are set by means of jumpers. That is, there are a total of 16 terminals on the control board corresponding to 8 channels and 8 addresses respectively, and the channels and addresses of each display 3 are set by jumpering different terminals. That is, a total of 64 combinations are set through different jumper methods for displaying the fueling data of 64 fuel nozzles. In this embodiment, the number of fuel nozzles 1 is four. For any two of them, the channels are set by jumpering terminals on the channels, and the addresses are set by jumpering terminals on any two addresses. When selecting, as long as one of the channels or addresses of each display 3 is different. That is, in this embodiment, the memory of the display 3 stores not only the information on the two used channels and two addresses but also the information on the 6 unused channels and addresses.

[0027] Hereinafter, the channel and address set for the first display 3a are referred to as the first channel and the first address, which are used to display the fueling data of the first fuel nozzle 1a. The channel and address set for the second display 3b are referred to as the second channel and the second address, which are used for the fueling data of the second fuel nozzle 1b. The channel and address set for the third display 3c are referred to as the third channel and the third address, which are used to display the fueling data of the third fuel nozzle 1c. The channel and address set for the fourth display 3d are referred to as the fourth channel and the fourth address, which are used to display the fueling data of the fourth fuel nozzle 1d.

[0028] The controller 2 stores the information on 8 channels and 8 addresses of the display 3. The controller 2 selects the corresponding channel and address according to the information of the fuel nozzle 1 that sends the pulse data and sends the fueling data to the corresponding display 3 for display. Regarding the technology of the controller 2 calculating the fueling data based on the pulse data sent by the fuel nozzle 1 and sending it to the corresponding display 3 for display through the set channels and addresses, it is prior art and will not be elaborated here.

[0029] The troubleshooting methods and systems for the display faults of the fuel dispenser system are described below. For simplicity of description, the third fuel nozzle 1c, the fourth fuel nozzle 1d, the third display 3c, and the fourth display 3d are omitted below, and a fuel dispenser system composed of two fuel nozzles and two displays is taken as an example.

[0030] Figure 2 It is a schematic diagram of the main modules of the controller and the display in the fuel dispenser system. As Figure 2 shown, the controller 2 is mainly composed of a fueling information calculation module 21, a storage module 24, a display fault detection module 22, and a counting module 23. The storage module 24 stores information of all 8 channels and 8 addresses including the channels and addresses of the first display 3a and the second display 3b. Among them, the first channel and the first address are associated with the first fuel nozzle 1a as the channel and address of the first display 3a respectively, and the second channel and the second address are associated with the first fuel nozzle 1a as the channel and address of the second display 3b respectively.

[0031] The fueling information calculation module 21 receives the pulse data sent by the first fuel nozzle 1a or the second fuel nozzle 1b, calculates and generates fueling data (information such as oil products, amount, fueling volume, taxes, etc.). After the fueling data is monitored by a monitoring processor (not shown), the storage module 24 obtains the corresponding channels and addresses, and sends the fueling data to the corresponding display 3 for display.

[0032] The first display 3a includes a display module 34a and a control module 33a. When receiving the fueling data sent by the controller 2, the control module 33a determines whether the address sending the fueling data is consistent with the set address. When they are consistent, it means that the channels and addresses sending the fueling data are consistent with the channels and addresses set by the display, and instructs the display module 34a to display the received fueling data, and at the same time sends a response message to the controller 2. When they are inconsistent, the first display 3a does not display (goes black). Therefore, the first display 3a only displays when receiving the fueling data of the first fuel nozzle 1a sent through the first channel and the first address. When either the channel or the address is different, the first display 3a goes black.

[0033] Except that the channels and addresses of the second display 3b are the second channel and the second address, which are different from those of the first display 3a, the rest are the same as those of the first display 3a. That is, after receiving the fueling data, when the control module 33b determines that the address sending the fueling data is the second address, it instructs the display module 34b to display the fueling data. Therefore, the second display 3b only displays when receiving the fueling data of the second fuel nozzle 1b sent through the second channel and the second address. When either the channel or the address is different, the second display 3b goes black.

[0034] The display fault detection module 22, the counting module 23, and the storage module 24 are used to troubleshoot the display faults of the display 3.

[0035] The storage module 24 stores information about all channels and addresses of the display 3, that is, information about 8 channels and 8 addresses. The information of the first channel, the first address, the second channel, and the second address stored in the storage module 24 is used simultaneously when sending refueling data.

[0036] During troubleshooting, the display fault detection module 22 generates authentication information, and the authentication information is sent to the bus in combinations of different channels and addresses. That is, different from sending refueling data, the channels and addresses for sending the authentication information are combinations of all channels and addresses stored in the storage module 24, covering all combinations of channels and addresses set by jumpers in the display 3.

[0037] Therefore, under normal circumstances, for the authentication information sent with the first channel and the first address, the first display 3a displays the authentication information, and for the authentication information sent with the second channel and the second address, the second display 3b displays the authentication information. When the authentication information sent through other channels and addresses is displayed by the first display 3a or the second display 3b, it indicates that the jumpers setting the channels and addresses in the first display 3a or the second display 3b are misconnected.

[0038] In this embodiment, the channels and addresses sent are used as the content of the authentication information. For example, the sent channels and addresses are represented by numbers or described in words. Therefore, the staff can judge whether there is a jumper error and the location of the jumper error based on the displayed numbers or word descriptions in combination with the channels and addresses that the display should have.

[0039] When the first display 3a or the second display 3b receives the authentication information, it judges whether the address is consistent with the address set by itself. When they are consistent, while the control module 33a (33b) instructs the display module 34a (34b) to display the authentication information, a response message is sent to the controller 2 through the bus. Different from displaying refueling data, when the display fault detection module 22 receives the response message, it changes the channel or address and sends the next authentication information until the authentication information is sent through all combinations of channels and addresses.

[0040] Therefore, even if the jumper position is incorrect and the channels and addresses set in the display 3 are inconsistent with those of the display stored in the controller 2, when the display 3 does not light up, by continuously changing the channels and addresses to send the authentication information, as long as the display 3 itself has no faults, it will receive the authentication information and display it. Since the authentication information is in the form of the numbers of the sent channels and addresses, such as the first channel, the first address or a text description, the staff can judge whether there is a jumper error and the position of the jumper misalignment based on the displayed numbers or text description in combination with the channels and addresses that the display 3 should have.

[0041] In this embodiment, when the display fault detection module 22 does not receive a response message within a preset time, it repeats sending the authentication information twice to ensure correctness. The counting module 23 is used to count the number of times of sending the authentication information with the same content. The display fault detection module 22 reads the count value of the counting module 23, and when the count value reaches 3 times, it changes the channel or address and then sends the next authentication information.

[0042] The following uses a flowchart to Figure 2 illustrate the troubleshooting of the display fault in the

[0043] Figures 3 to 6 This is a schematic diagram of the troubleshooting process for the display fault of the fuel dispenser system.

[0044] Figure 3 This is a flowchart of sending the first authentication information in the troubleshooting process of the display fault of the fuel dispenser system. As Figure 3 shown, in the first step S1, after the fuel dispenser system is powered on, the display fault detection module 22 reads the information of the first channel and the information of the first address from the storage module 24 to generate the first authentication information, and the content of the first authentication information is a number or text description representing the channel and the address.

[0045] In the second step S2, the controller 2 sends the first authentication information to the bus through the information of the first channel and the first address, and the display 3 with the same channel receives the first authentication information.

[0046] In the third step S3, the display 3 that receives the first authentication information judges whether the address it sets is the same as the address sending the first authentication information. If it is the same, it enters step S4 and displays the authentication information representing the first channel and the first address on the display screen. Otherwise, it enters the sixth step S6 and the display 3 does not display (goes black).

[0047] Since the channel of the jumper of the first display 3a is the first channel and the address is the first address, if there is no jumper error, the first display 3a receives the first authentication information and displays the information of the first channel and the first address on the display screen, and it can be judged that the jumper of the first display 3a is normal.

[0048] If there is an error in the channel and address of the jumper, the information of other channels or addresses will not be displayed or will be displayed instead. Therefore, based on the information of the channel and address displayed on the display screen and in combination with the channel and address of the first display 3a, the staff can determine the jumper error of the first display 3a and the location of the error.

[0049] On the contrary, since the channel of the jumper of the second display 3b is the second channel and the address is the second address, under normal circumstances, the second display 3b does not display. If the second display 3b displays the information of the first channel and the first address, it means that there is a jumper error in the second display 3b. Based on the information of the channel and address displayed on the display screen and in combination with the channel and address set for the second display 3b (the second channel and the second address), the staff can determine that there is a jumper error in the second display 3b and determine the location of the jumper error.

[0050] In the fifth step S5, after the display 3 that displays the information of the first channel and the information of the first address generates a response message after the display, the response message is returned to the controller 2 through the bus.

[0051] In the seventh step S7, the controller 2 determines whether it has received the response message. When the response message is received, it means that there is already a display on the display 3, and it enters the tenth step S10. When the controller 2 does not receive the response message within a preset time, for example, within 1 s, to avoid misjudgment caused by the loss of authentication information, it enters the eighth step S8. The controller 2 reads the count value of the counter to determine whether the number of repeated transmissions of the first authentication information is less than two. When the number of repeated transmissions is less than two, it enters step S9. After the count value of the counter is incremented by one, it returns to the second step S2 to repeatedly transmit the first authentication information until it is determined in the eighth step S8 that the number of repeated transmissions of the first authentication information is greater than or equal to two, and then it enters step S10 to change the address information and send the second authentication information.

[0052] Figure 4 It is a flowchart for sending the second authentication information in the fault troubleshooting process of the fuel dispenser system. As Figure 4 shown,

[0053] In the tenth step S10, the display fault detection module 22 reads the information of the first channel and the information of the second address from the storage module 24 to generate the second authentication information. The content of the second authentication information is a digital or text description representing the channel and the address.

[0054] In the eleventh step S11, the controller 2 uses the information of the first channel and the second address to send the second authentication information to each display 3 through the bus.

[0055] In the twelfth step S12, the display 3 that receives the second authentication information determines whether the set address is the same as the address that sends the second authentication information. If they are the same, it proceeds to the thirteenth step S13. The display 3 that receives the second authentication information displays the information of the first channel and the numerical or textual description of the second address on the display screen. Otherwise, it proceeds to the fifteenth step S15, and the display 3 does not display.

[0056] Since the normal jumper channel of the first display 3a is the first channel and the address is the first address, when there is no jumper error, the first display 3a will not display. When it displays, it indicates that a jumper error has occurred. Based on the information of the channel and address displayed on the display screen and combined with the channel and address set by the first display 3a, the staff can determine that a jumper error has occurred in the first display 3a and identify the location of the jumper error. Similarly, the jumper channel of the second display 3b is the second channel and the address is the second address. When there is no jumper error, the second display 3b will not display. When it displays, it indicates that a jumper error has occurred. Based on the information of the channel and address displayed on the display screen and combined with the channel and address of the second display 3b, the staff can not only determine that a jumper error has occurred in the second display 3b but also identify the location of the jumper error.

[0057] After that, the fourteenth step S14 to the eighteenth step S18 are the same as the fifth step to the ninth step in Figure 3 , refer to the Figure 3 description and will not be elaborated here.

[0058] Figure 5 is the flowchart for sending the third authentication information in the display fault troubleshooting process of the fuel dispenser system; as Figure 5 shown,

[0059] In the nineteenth step S19, the display fault detection module 22 reads the information of the second channel and the information of the first address from the storage module 24 to generate the third authentication information. The content of the third authentication information is the numerical or textual description representing the channel and the address.

[0060] In the twentieth step S20, the controller 2 sends the third authentication information to each display 3 through the bus using the information of the second channel and the first address.

[0061] In the twenty-first step S21, the display 3 that receives the third authentication information determines whether the set address is the same as the address that sends the third authentication information. If they are the same, it proceeds to the twenty-second step S22. The display 3 that receives the third authentication information displays the information of the second channel and the numerical or textual description of the first address on the display screen. Otherwise, it proceeds to the twenty-fourth step S24, and the display 3 does not display.

[0062] Since the channel of the jumper of the first display 3a is the first channel and the address is the first address, when there is no error in the jumper, the first display 3a will not display. When it displays, it means that there is an error in the jumper. Based on the channel and address information displayed on the display screen and combined with the channel and address of the first display 3a, the staff can determine that there is a jumper error in the first display 3a and locate the position of the jumper error. Similarly, the channel of the jumper of the second display 3b is the second channel and the address is the second address. When there is no error in the jumper, the second display 3b will not display. When it displays, it means that there is an error in the jumper. Based on the channel and address information displayed on the display screen and combined with the channel and address of the second display 3b, the staff can not only determine that there is a jumper error in the second display 3b but also locate the position of the jumper error.

[0063] After that, the twenty-third step S23 to the twenty-seventh step S27 are the same as Figure 3 the fifth step to the ninth step in Figure 3 and are not elaborated here with reference to the

[0064] Figure 6 It is a flowchart for sending the fourth authentication information in the troubleshooting process of the display fault of the fuel dispenser system. As Figure 6 shown,

[0065] In the twenty-eighth step S28, the display fault detection module 22 reads the information of the second channel and the information of the second address from the storage module 24 to generate the fourth authentication information. The content of the fourth authentication information is a digital or text description representing the channel and the address.

[0066] In the twenty-ninth step S29, the controller 2 sends the fourth authentication information to the bus through the information of the second channel and the second address, and the display 3 with the same channel receives the fourth authentication information.

[0067] In the thirtieth step S30, the display 3 that receives the fourth authentication information determines whether the set address is the same as the address for sending the fourth authentication information. If they are the same, it enters the thirty-first step S31, and the authentication information representing the second channel and the second address is displayed on the display screen. Otherwise, it enters the thirty-third step S33, and the display 3 does not display (goes black).

[0068] Since the channel of the jumper of the second display 3b is the second channel and the address is the second address, when there is no error in the jumper, the second display 3b receives the fourth authentication information and displays the information of the second channel and the second address on the display screen. If there is an error in either the channel or the address of the jumper, it does not display. Therefore, if the information of the channel and the address displayed on the second display 3b is consistent with the set channel and address of the second display 3b, it can be determined that the jumper of the second display 3b is normal.

[0069] On the contrary, since the channel of the jumper of the first display 3a is the first channel and the address is the first address, under normal circumstances, the first display 3a does not display. If the first display 3a displays the information of the second channel and the second address, it means that there is an error in the jumper of the first display 3a. Based on the information of the channel and the address displayed on the display screen and combined with the channel and the address (the first channel and the first address) set for the first display 3a, the staff can not only determine that there is a jumper error in the first display 3a, but also determine the location of the jumper error.

[0070] After that, the thirty-second step S32 to the thirty-sixth step S36 are the same as Figure 3 the fifth step to the ninth step in Figure 3 the description, and will not be repeated here.

[0071] After that, as Figures 3 to 6 described, continuously change the channel and the address to generate different authentication information, and send the authentication information to the display 3. Determine whether there is a jumper error and the location of the error according to the display on the display.

[0072] Since the channels and addresses for sending the authentication information include all combinations of 8 channels and 8 addresses in the display 3, that is, a total of 64 pieces of authentication information with different channel and address information are generated and sent to the bus. Therefore, no matter which terminal the jumper in the display 3 is jumpered to, as long as the display 3 itself has no fault, the authentication information will be displayed on the display screen. Based on the content of the authentication information and the channels and addresses that the display 3 should be set, the staff can judge the current jumper position of the display 3 and detect the location of the jumper error.

[0073] Moreover, by repeatedly sending the authentication information multiple times through the controller, the fault tolerance is increased, the problem of inaccurate detection caused by the loss of authentication information packets is prevented, and the accuracy of the detection result is improved.

[0074] The present invention can detect the cause of the display fault of the fuel dispenser display, quickly locate whether the display fault of the fuel dispenser display is a display fault or a wiring error, facilitate the staff to quickly carry out maintenance, and reduce the losses of the fuel dispenser manufacturer and the gas station.

[0075] It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims

1. Troubleshooting system for display faults of a fuel dispenser system, the fuel dispenser system comprising a controller (2), a plurality of fuel nozzles (1), and a plurality of displays (3). Each of the displays (3) corresponds one-to-one with each of the fuel nozzles (1) and is used to display the refueling data of the fuel nozzle (1). When the fuel nozzle (1) is refueling, the controller (2) receives the pulse information sent by the fuel nozzle (1) to generate refueling data, and the refueling data is sent to the corresponding display (3) through a bus for display. It is characterized in that Information of a plurality of different channels and a plurality of different addresses is pre-stored in the memories of each of the displays (3). By selecting and setting the channels and addresses of each of the displays (3), at least one channel or address is different between each of the displays (3). The controller (2) comprises a storage module (24), a display fault detection module (22), and a counting module (23). The storage module (24) stores at least the channels and addresses set for each of the displays (3). When troubleshooting a display fault, the display fault detection module (22) generates authentication information and sends it to the bus through combinations of different channels and addresses. The display (3) with consistent channels and addresses displays the authentication information.

2. The troubleshooting system for the fuel dispenser system display fault according to claim 1, wherein The number of combinations of channels and addresses stored in the memory of each of the displays (3) is greater than the number of actually used displays (3). The display fault detection module (22) sends the authentication information through all combinations of channels and addresses.

3. The troubleshooting system for the fuel dispenser system display fault according to claim 2, characterized in that, The authentication information is a number or a text description representing the sent channels and addresses.

4. The troubleshooting system for displaying faults in the fuel dispenser system according to any one of claims 1 to 3, characterized in that, It further comprises a refueling information calculation module (21). The refueling information calculation module (21) generates refueling data including information such as oil product, amount, refueling volume, and tax based on the pulse data received from the fuel nozzle (1).

5. Method for troubleshooting display faults of a fuel dispenser system, the fuel dispenser system comprising a controller (2), a plurality of fuel nozzles (1), and a plurality of displays (3). Each of the displays (3) corresponds one-to-one with each of the fuel nozzles (1) and is used to display the refueling data of the fuel nozzle (1). When refueling with the fuel gun (1), the controller (2) receives the pulse information sent by the fuel gun (1) to generate refueling data, and the refueling data is sent to the corresponding display (3) through a bus for display. It is characterized in that, It comprises the following steps Channel and address storage step: Information of a plurality of different channels and a plurality of different addresses is pre-stored in the memories of each of the displays (3). Channel and address setting step: From the pre-stored channels and addresses, select channels and addresses as the channels and addresses of each of the displays (3). At least one channel or address is different between each of the displays (3). At least the channels and addresses set for each of the displays (3) are stored in the controller (2). Troubleshooting display fault step: The controller (2) generates authentication information and sends it to the bus through combinations of different channels and addresses. The display (3) with consistent channels and addresses displays the authentication information.

6. The troubleshooting method for the fuel dispenser system display fault according to claim 5, wherein, The number of combinations of channels and addresses stored in the memory of each of the displays (3) is greater than the number of actually used displays (3). In the step of troubleshooting and displaying faults, the controller (2) sends the authentication information in combinations of all channels and addresses.

7. The troubleshooting method for the fuel dispenser system display fault according to claim 6, wherein The authentication information is a number or a literal description indicating the channel and address being sent.

8. The troubleshooting method for the fuel dispenser system display failure according to any one of claims 5 to 7, characterized in that, The step of troubleshooting and displaying faults is executed after the fuel dispenser system is powered on.

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