Urea solution distribution system and distribution program

Abstract

To provide an urea water delivery system for supplying urea water, which delivers the urea water to a delivery destination, has a detection device installed in the delivery destination, and detects a residual amount of the urea water.SOLUTION: A urea water delivery system 10 includes: a server 200 communicable with terminals 300, 500; and a detection device 100. The server 200 includes: a communication unit 210 which is communicable with the terminals 300, 500 and the detection device 100; a mapping unit 220 which displays residual amount information of urea water received from the detection device 100 on a map displayed on the terminals; a calendar unit 230 which displays the residual amount information of the urea water received from the detection device 100 on calendars each displayed on the terminals 300, 500; a memory unit which stores the residual amount information of the urea water, map information, and customer information; and a control unit 270 which predicts how the urea water decreases from change of a residual amount of the urea water detected by the detection device 100.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a urea aqueous solution delivery system, a delivery program and a delivery method.

Background Art

[0002] Nitrogen oxides are substances that cause air pollution, and automobile exhaust gas regulations are enforced for automobiles.

[0003] Urea aqueous solution is used to reduce nitrogen oxides in automobile exhaust gas.

[0004] Specifically, a chemical reaction between nitrogen oxides and urea aqueous solution decomposes the nitrogen oxides, and nitrogen and water are discharged into the atmosphere.

[0005] Therefore, urea aqueous solution is particularly necessary for automobiles equipped with diesel engines.

[0006] Patent Document 1 discloses a urea water level detector that measures a urea water level in a urea water storage tank that stores urea water used in a selective catalytic reduction device, a low-pass filter that reduces the influence of fluctuations in the urea water level measured by the urea water level detector, a urea water remaining amount indicator that displays the remaining amount of urea water based on the urea water level whose fluctuation influence has been reduced by the low-pass filter, and further includes a time constant changing unit that changes the time constant of the low-pass filter for a predetermined time after the urea water is thawed. The urea water remaining amount display device is disclosed.

Prior Art Literature

Patent Literature

[0007]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0008] Normally, when the amount of urea solution is low, the user contacts the delivery company for replenishment, but there was a problem in that users had to regularly check the remaining amount of urea solution.

[0009] Furthermore, traditionally, urea water delivery companies delivered and supplied urea water based on requests from users. This sometimes resulted in deliveries being made in the same direction for two consecutive days, and repeated deliveries to the same direction or area presented a problem of inefficient delivery.

[0010] In particular, with the recent surge in gasoline prices, when urea solution had to be repeatedly delivered at the same time to destinations in the same direction or region, even if they were far from the delivery company, there was a problem not only with delivery efficiency but also with the waste of energy such as gasoline.

[0011] The objective of this invention is to improve the delivery efficiency of urea solution to its destinations.

[0012] Another objective of this invention is to conserve energy used in delivery. [Means for solving the problem]

[0013] A urea water transport system according to the first aspect of the present invention is a urea water transport system for supplying urea water, which transports urea water to a destination and has a detection device installed at the destination for detecting the remaining amount of urea water, The urea solution delivery system includes a terminal and a server capable of communicating with the detection device. The aforementioned server, A communication unit capable of communicating with the terminal and the detection device, A mapping unit that displays the remaining amount information of urea solution received from the detection device on a map displayed on the terminal, A calendar unit that displays the remaining amount information of urea solution received from the detection device on a calendar displayed on the terminal, A storage unit that stores information on the remaining amount of urea solution, map information, and customer information, The urea solution delivery system includes a control unit that predicts the rate at which the urea solution will decrease based on the change in the remaining amount of urea solution detected by the aforementioned detection device.

[0014] The control unit predicts the rate at which the urea solution will decrease based on the change in the remaining amount of urea solution in the storage tank, and calculates the estimated date on which the urea solution will be depleted from the storage tank.

[0015] Furthermore, the control unit predicts the rate at which the urea solution will decrease based on the change in the remaining amount of urea solution in the storage tank, and calculates an estimated value (estimated amount) of urea solution in the future.

[0016] In other words, this invention makes it possible to estimate when the urea solution will run out in the storage tank.

[0017] Therefore, delivery groups can be set up for delivery destinations in the same direction or region with similar estimated delivery dates, allowing for the delivery of urea solution. This improves delivery efficiency and reduces energy consumption during delivery.

[0018] A urea solution delivery system according to the second aspect of the present invention is a urea solution delivery system according to the first aspect, The control unit calculates the average daily amount of urea solution based on the remaining amount information of urea solution detected by the detection device stored in the memory unit, by dividing the sum of the previously detected remaining amounts of urea solution by the corresponding number of days. The average daily usage is calculated as the difference between the total capacity of the storage tank and the aforementioned average value. This urea water delivery system calculates the remaining number of days by dividing the remaining amount of urea water in the storage tank by the average usage amount.

[0019] For example, the sum of the remaining urea solution volumes detected over 90 days is divided by the number of days (90) to find the average daily volume of urea solution remaining. If the average volume is 1800L and the total capacity of the storage tank is 2000L, then the difference between 2000L and 1800L, which is 200L, is the average daily usage of urea solution. Then, if the remaining volume of urea solution in the storage tank is 1600L, the quotient obtained by dividing 1600L by 200L, which is 8, is the number of days remaining.

[0020] Knowing the number of remaining days makes it possible to calculate the estimated date on which the urea water will be exhausted from the storage tank.

[0021] Furthermore, it is possible to know by when urea water must be delivered and replenished to each delivery destination, and delivery can be prioritized to delivery destinations with imminent deadlines.

[0022] Additionally, knowing the estimated date for each delivery destination allows delivery groups to be set up, improving delivery efficiency.

[0023] That is, urea water can be delivered by setting delivery groups for delivery destinations in the same direction or same region whose estimated exhaustion dates are near, which improves delivery efficiency and saves energy used for delivery.

[0024] A urea water delivery system according to a third aspect of the present invention is the urea water delivery system according to the second aspect, wherein the calendar unit includes a remaining amount prediction calendar that causes the terminal to display the remaining amount of urea water, and the urea water delivery system is configured to display the estimated date on which urea water will be exhausted from the storage tank on the remaining amount prediction calendar.

[0025] Urea water can be delivered by setting delivery groups for delivery destinations in the same direction or same region whose estimated exhaustion dates are near, which improves delivery efficiency and saves energy used for delivery.

[0026] A urea water delivery system according to a fourth aspect of the present invention is the urea water delivery system according to the third aspect, wherein the calendar unit sets a threshold for the remaining amount of urea water detected by the detection device, and changes the color of customer information displayed as the estimated date of urea water exhaustion from the storage tank on the remaining amount prediction calendar when the remaining amount falls below the threshold.

[0027] In this embodiment, a two-stage threshold is provided, and the color of the customer information tag, which is displayed as blue to yellow, and then from yellow to red, is changed.

[0028] The color of customer information displayed on the remaining quantity forecast calendar changes, making it easy to see at a glance which delivery destinations require priority.

[0029] A fifth aspect of the present invention relates to a program for a urea water delivery system that delivers urea water to a delivery destination and has a detection device installed at the delivery destination for detecting the remaining amount of urea water, The program for the urea solution delivery system is: A communication process that can communicate with the terminal and the detection device, A mapping process that displays the remaining amount information of urea solution received from the detection device on a map displayed on the terminal, The remaining amount information of the urea solution received from the detection device is displayed on a calendar shown in the terminal; A memory processing system that stores information on the remaining amount of urea solution, map information, and customer information, This is a program for a urea solution delivery system that includes a control process that predicts how quickly the urea solution will decrease based on the change in the remaining amount of urea solution detected by the aforementioned detection device.

[0030] Such a program would produce the same effect as the urea solution delivery system described in the first phase.

[0031] The program for the urea solution delivery system according to the sixth aspect of the present invention is a program for the urea solution delivery system according to the fifth aspect, The control process calculates the average hourly change in the remaining amount of urea solution based on the remaining amount information of urea solution detected by the detection device, which has been stored by the memory process. This is a program for a urea solution delivery system that calculates an estimated amount of urea solution by subtracting the average change in remaining amount calculated from the most recent remaining amount of urea solution detected by the aforementioned detection device, and predicts how quickly the urea solution will decrease.

[0032] Such a program would produce the same effect as the urea solution delivery system in the second phase.

[0033] The program for the urea solution delivery system according to the seventh aspect of the present invention is a program for the urea solution delivery system according to the sixth aspect, The calendar processing includes a remaining amount prediction calendar processing that displays the remaining amount of urea solution on the terminal. This is a program for a urea water distribution system that displays the estimated date on which the urea water will run out in the storage tank, based on the aforementioned remaining amount prediction calendar processing.

[0034] Such a program would produce the same effect as the urea solution delivery system in the third phase.

[0035] The program for the urea solution delivery system according to the eighth aspect of the present invention is a program for the urea solution delivery system according to the seventh aspect, The calendar processing described above is a program for a urea water delivery system that sets a threshold for the remaining amount of urea water detected by the detection device, and changes the color of customer information displayed as the estimated date on which the urea water will run out in the storage tank by the remaining amount prediction calendar processing when the threshold is not met.

[0036] Such a program would have the same effect as the urea solution delivery system in the fourth phase. [Brief explanation of the drawing]

[0037] [Figure 1] Conceptual diagram of a urea solution delivery system according to one embodiment of the present invention. [Figure 2] A screen displayed on the terminal of the urea solution delivery system according to the same embodiment. [Figure 3] A map displayed on the terminal of the urea water delivery system according to the same embodiment. [Figure 4] A screen displayed on the terminal of the urea solution delivery system according to the same embodiment. [Figure 5]A screen displayed on the terminal of the urea solution delivery system according to the same embodiment. [Figure 6] A screen displayed on the terminal of the urea solution delivery system according to the same embodiment. [Modes for carrying out the invention]

[0038] Embodiments of the present invention will be described below with reference to the drawings.

[0039] As shown in Figure 1, the urea water transport system 10 according to the present invention is A detection device 100 is installed on multiple user sides to detect the remaining amount of urea solution, A server 200 receives information on the remaining amount of urea solution from a detection device 100, Terminal 300, which is a terminal that can access server 200, The detection device 100 transmits information about the remaining amount of urea solution to the user-side terminal, the second terminal 400, This includes a third terminal 500, which is a terminal that can access server 200 for delivery personnel to check during delivery of urea solution.

[0040] Furthermore, there may be multiple instances of the first terminal 300, the second terminal 400, and the third terminal 500, and their number is not limited.

[0041] The detection device 100 includes a storage tank 110 for storing urea solution, A liquid level sensor 120 detects the remaining amount of urea solution in the storage tank 110, A storage unit 130 stores information on the remaining amount of urea solution detected by the liquid level sensor 120, The system includes a transmitting unit 140 that transmits information on the remaining amount of urea solution detected by a liquid level sensor 120 to a server 200.

[0042] The storage tank 110 is a tank for storing urea solution, and in this embodiment, it is a tank that can store 1000L.

[0043] The liquid level sensor 120 is a sensor that detects the remaining amount of urea solution. In this embodiment, an ultrasonic sensor is used to measure the distance to the liquid surface, and the remaining amount of urea solution is determined from the height of the liquid surface.

[0044] Specifically, the liquid level sensor 120 emits high-frequency ultrasonic waves toward the liquid surface of the urea solution in the storage tank 110, and the ultrasonic transmitting / receiving unit 121 measures the time from the emission to the reception of the high-frequency ultrasonic waves by receiving the high-frequency ultrasonic waves reflected from the liquid surface.

[0045] The liquid level sensor 120 converts the time from the transmission to the reception of high-frequency ultrasonic waves into distance and calculates the remaining amount of urea solution based on the capacity of the storage tank 110.

[0046] The memory unit 130 stores information on the remaining amount of urea solution in the storage tank 110, as detected by the liquid level sensor 120.

[0047] The transmitting unit 140 transmits information about the remaining amount of urea solution detected by the liquid level sensor 120.

[0048] Specifically, the transmitting unit 140 transmits information about the remaining amount of urea solution stored in the storage unit 130.

[0049] The remaining amount of urea solution detected by the liquid level sensor 120 is transmitted by the transmission unit 140 to the server 200 and the second terminal 400, which is the user's terminal.

[0050] The remaining amount of urea solution detected by the liquid level sensor 120 is transmitted at predetermined intervals to the server 200 and the second terminal 400, which is the user's terminal.

[0051] In this embodiment, the liquid level sensor 120 detects the remaining amount of urea solution in the storage tank 110 once every hour, and the result is stored in the memory unit 130.

[0052] In this embodiment, the information on the remaining amount of urea solution stored in the storage unit 130 is transmitted once every 13 hours by the transmission unit 140 to the server 200 and the second terminal 400, which is the user's terminal.

[0053] Furthermore, the information regarding the remaining amount of urea solution transmitted to the second terminal 400 may not be transmitted directly from the detection device 100 to the second terminal 400, but only to the server 200.

[0054] Furthermore, the transmission of the remaining amount information of the urea solution to the second terminal 400 may be sent from the server 200.

[0055] Furthermore, a relay may be provided between the transmitting unit 140 and the server 200 or the second terminal 400.

[0056] The method of transmission from the transmitting unit 140 to the server 200 or the second terminal 400 may be either wired or wireless.

[0057] In addition to Wi-Fi, other short-range wireless communication technologies such as Bluetooth (registered trademark) may also be used.

[0058] In this embodiment, a liquid level sensor 120 is used as the sensor for the detection device 100, but other types of sensors such as a liquid level displacement sensor or a liquid volume sensor may also be used.

[0059] Server 200 includes a communication unit 210 capable of communicating with detection device 100, first terminal 300, second terminal 400, and third terminal 500, A mapping unit 220 displays information on the remaining amount of urea solution received from the detection device 100 on a map displayed on the first terminal 300 and the third terminal, A calendar unit 230 displays information on the remaining amount of urea solution received from the detection device 100 on calendars displayed on the first terminal 300 and the third terminal, An alert unit 240 that notifies of changes in the remaining amount of urea solution, Customer Information Management Department 250, which manages customer information, A server storage unit 260 is a storage unit that stores information on the remaining amount of urea solution, map information, list information, alert information, and customer information. The system includes a control unit 270 that predicts how the urea solution will decrease based on the history of the remaining amount of urea solution.

[0060] Server 200 may consist of multiple servers, or it may be a cloud server.

[0061] The communication unit 210 can communicate with the detection device 100 located on the user side, the first terminal 300 for editing and displaying information in the server 200, the second terminal 400 for displaying the remaining amount of urea solution from the detection device 100, and the third terminal 500 held by the delivery person for displaying information in the server 200.

[0062] The communication by the communication unit 210 may be either wireless or wired.

[0063] The mapping unit 220 places the remaining amount information of urea solution received from multiple detection devices 100 onto the map 221.

[0064] The remaining amount information of urea solution received from the detection device 100 is stored in the server storage unit 260.

[0065] Furthermore, the map information of the map 221 displayed on the first terminal 300 and the third terminal 500 by the mapping unit 220 is stored in the server storage unit 260.

[0066] Figure 2 shows the display screens displayed on the first display unit 310 and the third display unit 510 of the first terminal 300 and the third terminal 500.

[0067] In the display screen shown in Figure 2, the mapping unit 220 displays the remaining amount of urea solution on the map 221.

[0068] In this embodiment, the remaining amount of urea solution is expressed as a percentage or in liters corresponding to that percentage, and the placement of each detection device 100 is shown on the map 221.

[0069] Map 221 can be zoomed in and out, and can also be changed to an aerial photograph, as shown in Figure 3.

[0070] The location of the detection device 100, that is, the location of the urea water storage tank 110, is shown on map 221, and the remaining amount of urea water in the storage tank 110 is also shown, so that the users of the first terminal 300 and the users of the third terminal 500 (delivery personnel) can intuitively determine which locations should be prioritized for urea water delivery.

[0071] The calendar unit 230 displays the remaining amount of urea solution received from the detection device 100 on the calendars displayed on the first terminal 300 and the third terminal 500.

[0072] The calendar unit 230 includes a remaining amount prediction calendar 231 that displays the remaining amount of urea solution on the calendars displayed on the first terminal 300 and the third terminal 500, It includes a delivery schedule 232 for checking the delivery schedule of urea solution.

[0073] The display screen shown in Figure 2 shows the remaining quantity forecast calendar 231 and the delivery schedule 232.

[0074] Figure 4 shows the display screen when the remaining battery level forecast calendar 231 is selected, and it is the "Month" screen. It is also possible to switch to the "Week" screen.

[0075] In the remaining quantity forecast calendar 231, customer information 231a, 231b, and 231c are displayed as follows: customer information 231a, which is the most urgent, is displayed in red; customer information 231b, which is the next most urgent, is displayed in yellow; and customer information 231c, which is the normal, is displayed in blue.

[0076] Based on the past usage of urea solution at the delivery destination (changes in the remaining amount of urea solution in the past) and the capacity of the storage tank 110, the control unit 270 calculates (predicts) the estimated date on which the urea solution will run out in the storage tank 110.

[0077] Specifically, the control unit 270 predicts the number of days remaining until the urea solution in the storage tank 110 is depleted, and determines the estimated date on which the urea solution will be depleted based on the remaining days.

[0078] More specifically, the control unit 270 calculates the average daily amount of urea solution remaining by dividing the sum of the previously detected amounts of urea solution remaining by the corresponding number of days, calculates the average daily usage which is the difference between the total capacity of the storage tank and the average daily usage, and calculates the number of days remaining of urea solution by dividing the remaining amount of urea solution in the storage tank by the average usage.

[0079] For example, the sum of the remaining amounts of urea solution detected over 90 days is divided by 90 to obtain the average daily amount of remaining urea solution. If the average is 1800L and the total capacity of the storage tank 110 is 2000L, then the difference between 2000L and 1800L, which is 200L, is the average daily usage of urea solution. If the remaining amount of urea solution in the storage tank 110 is 1600L, then the quotient of 8 obtained by dividing 1600L by 200L is the number of remaining days. The control unit 270 can then determine the estimated number of days from the number of remaining days.

[0080] The calendar unit 230 displays customer information 231a, 231b, and 231c on the remaining amount prediction calendar 231 on the days when the control unit 270 predicts that the urea solution will run out in the storage tank 110.

[0081] The calendar unit 230 sets two thresholds according to the remaining amount of urea solution at each delivery destination, and displays customer information on the remaining amount prediction calendar 231 in blue (231c), yellow (231b), and red (231a) according to these thresholds.

[0082] Specifically, customer information is normally displayed in blue (231c) on the remaining amount prediction calendar 231, but when the remaining amount of urea solution detected by the detection device 100 becomes low (falls below the first threshold), it is displayed in yellow (231b), and when the remaining amount of urea solution detected by the detection device 100 is about to run out (falls below the second threshold), it is displayed in red (231a).

[0083] The threshold can be set for each group. In this embodiment, the color changes from blue to yellow when the remaining amount of urea solution falls below the first threshold, and from yellow to red when it falls below the second threshold. However, any color is acceptable as long as it is distinguishable. The threshold can also be set arbitrarily according to each delivery destination.

[0084] The remaining quantity forecast calendar 231 displays customer information 231a, 231b, and 231c, which include "delivery address," "type of urea solution," and "remaining amount of urea solution."

[0085] The remaining quantity forecast calendar 231 displays customer information 231a, 231b, and 231c on the day before the urea solution is expected to run out in the storage tank 110.

[0086] For example, the remaining amount of urea solution will be displayed as "7% 19.04 / 272L," showing both the percentage of urea solution remaining and the remaining amount divided by the total tank capacity (L).

[0087] The customer information 231a (231b, 231c) shown in Figures 5 and 6 is the screen displayed when customer information 231a (231b, 231c) shown in the remaining quantity forecast calendar 231 shown in Figure 4 is selected.

[0088] Customer information 231a (231b, 231c) is stored in the server storage unit 260. For example, as shown in Figures 4 and 5, customer information 231a (231b, 231c) includes customer name, address, location of storage tank 110, type of urea solution, type of storage tank 110, remaining capacity, tank capacity, status, signal level, remaining days, final delivery date, serial number, temperature, remaining amount of urea solution (remaining capacity), and estimated value.

[0089] As shown in Figures 5 and 6, the remaining amount (remaining volume) and estimated value of the urea solution are displayed in the graph.

[0090] For example, customer information 231a (231b, 231c) shown in Figure 5 displays a remaining number of days as 1 day (October 11, 2021), and this customer information 231a (231b, 231c) is displayed on October 11th in the remaining amount forecast calendar 231.

[0091] For example, customer information 231a (231b, 231c) shown in Figure 6 displays a remaining number of days as 7 days (October 20, 2021), and this customer information 231a (231b, 231c) is displayed on October 20th in the remaining amount forecast calendar 231.

[0092] The graph showing the remaining amount of urea solution can be changed to display periods such as 1 week, 1 month, 3 months, 6 months, 12 months, etc.

[0093] Additionally, the graph showing the remaining amount of urea solution displays an estimated value, which is a prediction of the remaining amount of urea solution based on changes in past graphs.

[0094] In this embodiment, the estimated value is the quotient obtained by dividing the sum of past remaining amounts by the number of days (converted to hours) up to that point, and represents the average value per day.

[0095] The control unit 270 predicts the remaining amount of urea solution based on past changes in the remaining amount of urea solution (how it decreased) and the capacity of the storage tank 110. Specific details will be described later.

[0096] Selecting the scheduled list 231d displayed on the remaining quantity prediction calendar 231 will display a list of the delivery destination, type of urea solution, and remaining amount of urea solution shown on the calendar.

[0097] Delivery schedule 232 allows you to check the delivery schedule for urea solution. It is used by delivery personnel to check their own delivery schedules and by managers to check the delivery status, and the delivery destinations are displayed on a calendar.

[0098] The alert unit 240 displays the number of storage tanks 110 on the map 221 in which the amount of urea solution has decreased, and the number of storage tanks 110 in which the amount of urea solution has run out.

[0099] The alert unit 240 also provides warnings regarding the remaining amount of urea solution and malfunctions of the detection device 100 (for example, mechanical malfunctions of the sensor, misalignment of the sensor, etc.).

[0100] The alert unit 240 includes an alert display unit 241 that warns of the status of the urea solution, It includes alert 242, which displays the specific details of the alert.

[0101] In the display screen shown in Figure 2, the alert unit 240 displays the alert display unit 241 and alert 242.

[0102] The alert display unit 241 allows you to check the number of storage tanks 110 where the urea solution has decreased, and the number of storage tanks 110 where the urea solution has run out.

[0103] When you open the alert 242 page, "Level Warning," "Sensor Alert," and "Past Warnings" are displayed on the screen, along with the company name, the "Installation Location" of storage tank 110, the "Type" indicating the remaining amount of urea solution, and a list of "Warnings" such as "The filling level of XX is currently 21, and it has been below the set threshold of 30% since 2021 / 10 / 4 0:32:44."

[0104] The customer information management unit 250 displays customer information for customer 251, It has a representative 252 that displays the customer's representative.

[0105] The customer information management unit 250 manages customer information. Specifically, customer names, postal codes, addresses, telephone numbers, contact persons, contact person email addresses, and mobile phone numbers are stored in the server storage unit 260, and the customer information management unit 250 manages this information.

[0106] For customer 251, customer information is displayed, including customer name, postal code, address, telephone number, and contact person.

[0107] In contact person 252, the customer's contact person and their email address are displayed. Contact person 252 may also display the customer's contact person's mobile phone number.

[0108] The server storage unit 260 stores information on the remaining amount of urea solution from each detection device 100.

[0109] Furthermore, the server storage unit 260 stores customer information, map information, list information, and alert information.

[0110] The server memory unit 260 stores, for example, a reference amount (numerical value) for determining the remaining amount, the capacity of the storage tank 110 installed at each delivery destination, the type of urea solution used at each delivery destination, the standard consumption amount of urea solution at each delivery destination, the date and time of the last urea solution replenishment at each delivery destination and the amount replenished, and the address of each delivery destination.

[0111] Customer information is the same as customer information 231a. Map information is the map information of map 221 displayed on the first terminal 300 and the third terminal 500.

[0112] List information refers to the information displayed in the remaining battery level forecast calendar 231.

[0113] Alert information refers to information displayed on the alert unit 240, such as information displayed when the urea solution level falls below a threshold, or information displayed when there is an abnormality in the detection device 100.

[0114] For example, if a mechanical malfunction occurs in the liquid level sensor 120, or if its placement becomes skewed for some reason, these will be displayed and stored as alert information.

[0115] The control unit 270 predicts how quickly the urea solution in the storage tank 110 will decrease based on the changes in the remaining amount information of the urea solution stored in the server storage unit 260.

[0116] Specifically, the control unit 270 calculates the average of the changes in the amount of urea solution remaining in the storage tank 110 per hour, which is stored in the server storage unit 260.

[0117] More specifically, the control unit 270 predicts the number of days remaining until the urea solution in the storage tank 110 is depleted, and determines the estimated date on which the urea solution will be depleted based on the remaining days.

[0118] The remaining number of days until the urea solution runs out is calculated and determined by the control unit 270 as described above.

[0119] Alternatively, the estimated value (estimated amount) of future urea solution may be calculated by subtracting the calculated average change in remaining amount from the most recent remaining amount of urea solution detected by the detection device 100.

[0120] Furthermore, the control unit 270 may calculate the average hourly change in the remaining amount of urea water in the storage tank 110 stored in the server storage unit 260, and calculate the estimated date on which the urea water in the storage tank 110 will be depleted.

[0121] The estimated date on which the urea solution will run out is displayed on the remaining quantity forecast calendar 231.

[0122] The server 200 may store information such as remaining capacity and the current location of delivery vehicles via telecommunication circuits.

[0123] In the urea solution delivery system 10 of this embodiment, urea solution can be supplied in units of, for example, 1 liter.

[0124] In other words, in this embodiment, it is possible to supply urea solution in an amount that will fill the storage tank 110 to capacity or an amount that will not fill it to capacity.

[0125] For example, the control unit 270 can set up delivery groups as follows, based on the delivery destination information (customer information 231a, 231b, 231c) stored in the server storage unit 260.

[0126] Delivery destination information refers to customer information 231a, 231b, and 231c, and includes, for example, the delivery address, the remaining amount of urea solution for each delivery destination, the tank capacity of the storage tank 110 for each delivery destination, and the history of the remaining amount of urea solution for each delivery destination.

[0127] The urea solution remaining amount history, as shown in Figures 5 and 6, stores the past remaining amount of urea solution and is stored in the server storage unit 260.

[0128] Delivery groups can be configured, for example, to include nearby delivery destinations based on the delivery address, or delivery destinations in the same direction from the origin.

[0129] For example, if the delivery source (the user of the urea water delivery system 10 according to this embodiment) is located in Kyoto Prefecture, the delivery destinations in Shiga Prefecture and Fukui Prefecture can be set as the same delivery group, and the re-delivery destinations in Osaka Prefecture and Hyogo Prefecture can be set as the same delivery group.

[0130] Furthermore, if the delivery source (the user of the urea water delivery system 10 according to this embodiment) is located in Kyoto City, the delivery destinations in Uji City, Kyoto Prefecture and Joyo City, Kyoto Prefecture (both located south of the delivery source in Kyoto City) can be set as the same delivery group, and the delivery destinations in Maizuru City, Kyoto Prefecture and Fukuchiyama City, Kyoto Prefecture (both located north of the delivery source in Kyoto City) can be set as the same delivery group.

[0131] The delivery group is configured to prioritize the inclusion of high-priority customer information 231a displayed on the remaining stock forecast calendar 231.

[0132] The delivery group may be set by the person in charge at the delivery source, or the control unit 270 may set the delivery group.

[0133] The present invention can also be implemented in various improved, modified, or altered forms without departing from its spirit. [Explanation of Symbols]

[0134] 10. Urea solution delivery system 100 detection devices 120 Liquid level sensor 200 servers 210 Communications Department 220 Mapping section 230 Calendar Section 231 Battery Level Prediction Calendar 240 Alert Section 250 Customer Information Management Department 260 Server Storage Units 270 Control Unit 300 Terminal 1 400 Second Terminal 500 Third Terminal

Claims

1. A urea water distribution system for supplying urea water, which includes a detection device for delivering urea water to a delivery destination and detecting the remaining amount of urea water installed at the delivery destination, The urea solution delivery system includes a terminal and a server capable of communicating with the detection device. The aforementioned server, A communication unit capable of communicating with the terminal and the detection device, A mapping unit that displays the remaining amount information of urea solution received from the detection device on a map displayed on the terminal, A calendar unit that displays the remaining amount information of urea solution received from the detection device on a calendar displayed on the terminal, A storage unit that stores information on the remaining amount of urea solution, map information, and customer information, The system includes a control unit that predicts the rate at which the urea solution will decrease based on the change in the remaining amount of urea solution detected by the detection device, The control unit predicts the number of days remaining until the urea solution in the storage tank is depleted, and determines the estimated date on which the urea solution will be depleted based on the remaining days. The calendar unit has a remaining amount prediction calendar that displays the remaining amount of urea solution on the terminal, The remaining amount prediction calendar displays the estimated date on which the urea solution will run out in the storage tank. The aforementioned remaining amount information is a urea solution distribution system in which the remaining amount of urea solution is expressed as a percentage or in liters corresponding to that percentage.

2. The control unit calculates the average daily amount of urea solution based on the remaining amount information of urea solution detected by the detection device stored in the memory unit, by dividing the sum of the previously detected remaining amounts of urea solution by the corresponding number of days. The average daily usage is calculated as the difference between the total capacity of the storage tank and the aforementioned average value. The urea water delivery system according to claim 1, wherein the remaining number of days is calculated by dividing the remaining amount of urea water in the storage tank by the average usage amount.

3. The urea water delivery system according to claim 2, wherein the calendar unit sets a threshold for the remaining amount of urea water detected by the detection device, and changes the color of customer information displayed on the remaining amount prediction calendar as the estimated date on which the urea water will be depleted from the storage tank when the threshold is not met.

4. A program for a urea water distribution system that delivers urea water to a delivery destination and has a detection device installed at the delivery destination to detect the remaining amount of urea water, The urea solution delivery system includes a terminal and a server capable of communicating with the detection device. The program for the urea solution delivery system is: A communication process that can communicate with the terminal and the detection device, A mapping process that displays the remaining amount information of urea solution received from the detection device on a map displayed on the terminal, The remaining amount information of the urea solution received from the detection device is displayed on a calendar shown in the terminal; A memory processing system that stores information on the remaining amount of urea solution, map information, and customer information, The control process is performed to predict how the urea solution will decrease based on the change in the remaining amount of urea solution detected by the detection device. The control process predicts the number of days remaining until the urea solution is depleted from the storage tank, and determines the estimated date on which the urea solution will be depleted based on the remaining days. The calendar processing includes a remaining amount prediction calendar processing that displays the remaining amount of urea solution on the terminal. The aforementioned remaining amount prediction calendar displays the estimated date on which the urea solution will run out in the storage tank. The remaining amount information is a program for a urea solution delivery system in which the remaining amount of urea solution is expressed as a percentage or in liters corresponding to that percentage.

5. The control process calculates the average daily amount of urea solution based on the remaining amount information of urea solution detected by the detection device stored in the memory process, by dividing the sum of the remaining amounts of urea solution detected in the past by the corresponding number of days. The average daily usage is calculated as the difference between the total capacity of the storage tank and the aforementioned average value. A program for a urea water delivery system according to claim 4, which calculates the remaining number of days by dividing the remaining amount of urea water in the storage tank by the average usage amount.

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