JP2018150853A - Microwave irradiation device, exhaust emission control device, automobile and management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microwave irradiation device capable of measuring the quantity of fine particles such as PM deposited inside of a DPF or the like as accurately as possible.SOLUTION: A microwave irradiation device comprises: an annular microwave transmission line; a first microwave generation part that is connected to the annular microwave transmission line; a second microwave generation part that is connected to the annular microwave transmission line; a microwave transmission line; and a microwave measuring part that is connected with the first microwave generation part that is connected to the annular microwave transmission line and the annular microwave transmission line and between the annular microwave transmission line and the first microwave generation part or between the annular microwave transmission line and the second microwave generation part. A microwave that is generated in the first microwave generation part and a microwave that is generated in the second microwave generation part have the same frequency and different phases.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a microwave irradiation device, an exhaust purification device, an automobile, and a management system.

  Currently, an exhaust gas purification apparatus using a DPF (Diesel Particulate Filter) is put into practical use as a device for collecting particulates such as PM (Particulate matter) contained in exhaust gas. Such an exhaust purification device is required to regenerate the DPF because particulates such as PM accumulate on the DPF when used. As a method for regenerating the DPF, for example, a method using a high-frequency electromagnetic wave such as a microwave emitted from a microwave irradiation apparatus is disclosed. Specifically, in this method, the DPF is regenerated by irradiating the DPF with electromagnetic waves such as microwaves to heat and burn particulates such as PM deposited on the DPF.

Japanese Patent Laid-Open No. 10-220219 Japanese Patent No. 5628818

  In the exhaust purification apparatus described above, the regeneration of the DPF is performed by irradiating the DPF with electromagnetic waves such as microwaves, whereby the particulates such as PM are dielectrically heated, and the particulates such as PM are oxidatively decomposed. Therefore, it is efficient to regenerate the DPF when a predetermined amount of particulates such as PM deposited inside the DPF is deposited. However, particulates such as PM deposited inside the DPF cannot be seen from the outside of the DPF, and it is difficult to accurately know how much particulates such as PM are deposited.

  Therefore, there is a need for a microwave irradiation apparatus that can measure the amount of particulates such as PM deposited inside a DPF as accurately as possible.

  According to one aspect of the present embodiment, an annular microwave transmission path, a first microwave generation unit connected to the annular microwave transmission path, and the annular microwave transmission path A second microwave generator connected to the first microwave generator, a microwave transmission path, a first microwave generator connected to the annular microwave transmission path, and the annular microwave transmission path A microwave measuring unit connected between the annular microwave transmission path and the first microwave generating unit, or between the annular microwave transmission path and the second microwave generating unit. And the microwave generated in the first microwave generator and the microwave generated in the second microwave generator have the same frequency and different phases. Features.

  According to the disclosed microwave irradiation apparatus, the amount of particulates such as PM deposited in the DPF or the like can be measured as accurately as possible.

Explanatory drawing (1) of the structure of the exhaust gas purification device in 1st Embodiment Explanatory drawing of the standing wave generated in the annular waveguide in the first embodiment Structure diagram of exhaust emission control device with one microwave generator connected to an annular waveguide Intensity distribution diagram of microwave in the exhaust emission control device shown in FIG. Intensity distribution diagram of microwave in exhaust emission control device according to first embodiment Explanatory diagram of the characteristics of microwaves detected by the microwave measurement unit Flowchart for explaining control method 1 of the exhaust purification device Explanatory drawing (2) of the structure of the exhaust gas purification device in 1st Embodiment Explanatory drawing of the table used for the control method 2 of an exhaust gas purification device Flowchart for explaining control method 2 of the exhaust purification device Explanatory drawing (3) of the structure of the exhaust gas purification apparatus in 1st Embodiment Explanatory drawing of the automobile in the second embodiment Explanatory drawing of the management system in 2nd Embodiment The figure explaining the route management system in 3rd Embodiment The figure explaining the system configuration | structure of the route management system in 3rd Embodiment The figure which shows an example of the hardware apparatus of a route management server A figure showing an example of driving pattern database The figure which shows an example of the vehicle database Figure showing an example of the cargo database Figure showing an example of a traffic jam database Figure showing an example of the standard accumulation amount database The figure explaining the function of each apparatus which the route management system in 3rd Embodiment has The figure explaining the function of an estimated amount calculation part Flowchart explaining operation of navigation device Flow chart explaining operation of route management server Flowchart explaining processing of estimated amount calculation unit Diagram explaining examples of travel routes The first figure which shows an example of traffic jam information The second figure which shows an example of traffic jam information The figure explaining the determination of a forced regeneration determination part

  The form for implementing is demonstrated below. In addition, about the same member etc., the same code | symbol is attached | subjected and description is abbreviate | omitted. In addition, in this application, it may describe that the intensity distribution of a microwave arises that the strong part and weak part of a microwave intensity arise.

[First Embodiment]
Next, the microwave irradiation apparatus and the exhaust emission control apparatus in the first embodiment will be described with reference to FIG. FIG. 1 shows an exhaust emission control device 100 to which a microwave irradiation device according to the present embodiment is attached.

  FIG. 1A is a perspective view of a main part of an exhaust emission control device to which a microwave irradiation device according to the present embodiment is attached, and FIG. FIG. The exhaust purification device 100 includes a particulate collection unit 10, a casing unit 20, a first microwave generation unit 41, a second microwave generation unit 42, a control unit 60, a microwave measurement unit 70, and the like. Yes. An annular waveguide 30 that is an annular microwave transmission path is provided around the cylindrical casing 20, and on the casing 20 side that is the inner side of the annular waveguide 30. A hole or the like (not shown) is formed so that the microwave leaks into the housing part 20 and is irradiated to the particulate collection part 10. In the present embodiment, the frequency of the microwaves generated by the first microwave generator 41 and the second microwave generator 42 is in the vicinity of 2.45 GHz, and is 0.1 GHz or more and 3.0 GHz or less. It is. Moreover, in this application, it may describe as fine particles, such as PM.

  The particulate collection unit 10 is formed of DPF or the like. The DPF is formed of, for example, a honeycomb structure in which adjacent vents are alternately closed, and the exhaust is discharged from a vent different from the vent of the inlet.

  The casing 20 is made of a metal material such as stainless steel, and includes a casing main body 20a that covers the periphery of the particulate collection unit 10, and an inlet 20b and an outlet 20c that are connected to the casing main body 20a. Have. In the exhaust purification apparatus 100 according to the present embodiment, exhaust gas such as exhaust gas from the engine or the like enters the housing portion 20 from the suction port 20b in the direction indicated by the broken line arrow A, and enters the housing main body portion 20a. It is purified by passing through the particulate collection unit 10 installed in the. Thereafter, the exhaust gas purified in the particulate collection unit 10 is discharged in the direction indicated by the broken line arrow B from the discharge port 20c.

  A first microwave generator 41 is connected to the annular waveguide 30 by a first connection waveguide 51, and further, a second microwave generator 42 is connected to the second connection waveguide 51. 52 is connected. The microwave generated in the first microwave generation unit 41 propagates in the first connection waveguide 51 in the direction indicated by the broken line arrow C and is supplied into the annular waveguide 30. Further, the microwave generated in the second microwave generation unit 42 propagates in the second connection waveguide 52 in the direction indicated by the dashed arrow D and is supplied into the annular waveguide 30.

  The frequency of the microwave generated by the first microwave generator 41 and the frequency of the microwave generated by the second microwave generator 42 are the same frequency. The microwave irradiation apparatus according to the present embodiment includes an annular waveguide 30, a first microwave generator 41, a second microwave generator 42, a first connection waveguide 51, and a second connection conductor. A wave tube 52, a control unit 60, and a microwave measurement unit 70 are included.

  The distance L between the center 51a of the connection portion between the annular waveguide 30 and the first connection waveguide 51 and the center 52a of the connection portion between the annular waveguide 30 and the second connection waveguide 52. Is formed to be (2N−1) × λ / 4. Note that λ is the wavelength of the microwave supplied to the annular waveguide 30, and N is a positive integer. Since the distance L is preferably not too long, the distance L is preferably λ / 4, 3λ / 4, 5λ / 4, or 7λ / 4.

Further, the microwave supplied from the first microwave generation unit 41 to the annular waveguide 30 via the first connection waveguide 51 and the second connection waveguide from the second microwave generation unit 42. The phase of the microwave supplied to the annular waveguide 30 via the tube 52 is shifted by π / 2, that is, λ / 4. As a result, as shown in FIG. 2, in the annular waveguide 30, the microwave generated by the first microwave generator 41 and the microwave generated by the second microwave generator 42 are used. Standing waves W ₁ and W ₂ are generated. FIG. 2 is a cross-sectional view taken along the one-dot chain line 1A-1B in FIG.

In the present embodiment, the standing wave W ₁ generated by the microwave from the first microwave generator 41 and the standing wave W ₂ generated by the microwave from the second microwave generator 42 are Is out of phase by π / 2. Therefore, the antinodes of the standing wave W ₁ generated by the microwave from the first microwave generation unit 41 become nodes of the standing wave W ₂ generated by the microwave from the second microwave generation unit 42. . Similarly, the node of the standing wave W ₁ generated by the microwave from the first microwave generator 41 is the antinode of the standing wave W ₂ generated by the microwave from the second microwave generator 42. Become. As a result, the position of the node of one standing wave becomes the position of the antinode of the other standing wave and complements each other, so that the generation of the intensity distribution of the microwave is suppressed in the annular waveguide 30. Can do. That is, in the annular waveguide 30, it is possible to suppress the generation of a strong portion and a weak portion of the microwave. The microwave in the annular waveguide 30 leaks from a hole (not shown) provided on the inside of the annular waveguide 30 on the side of the particulate collection unit 10 and is irradiated to the particulate collection unit 10. Therefore, in the present embodiment, since the intensity of the microwave irradiated to the particle collecting unit 10 can be made substantially uniform, the particle collecting unit 10 can be heated uniformly.

Further, in the present embodiment, the center 51 a of the connection portion between the annular waveguide 30 and the first connection waveguide 51 is a standing wave generated by the microwave from the second microwave generator 42. the section of the wave _{W 2.} Therefore, the microwave from the second microwave generator 42 does not enter the first connection waveguide 51. Similarly, the center 52 a of the connection portion between the annular waveguide 30 and the second connection waveguide 52 is a node of the standing wave W ₁ generated by the microwave from the first microwave generator 41. Become. Therefore, the microwave from the first microwave generation unit 41 does not enter the first connection waveguide 51.

  In the microwave irradiation apparatus in the present embodiment, the first microwave generation unit 41 and the second microwave generation unit 42 may generate the microwaves simultaneously or alternately. . In the first microwave generation unit 41 and the second microwave generation unit 42, control when the microwaves are alternately generated is performed by the control unit 60.

  Next, the microwaves in the exhaust purification apparatus 100 in the present embodiment shown in FIG. 1 and the exhaust purification apparatus to which the microwave irradiation apparatus having one microwave generation unit shown in FIG. The intensity distribution will be described. The microwave irradiation apparatus having one microwave generation unit illustrated in FIG. 3 includes a particulate collection unit 10, a housing unit 20, a microwave generation unit 941, and the like. An annular waveguide 30 is provided around the cylindrical casing 20, and a microwave generator 941 is connected to the annular waveguide 30 by a connection waveguide 951. That is, the microwave irradiation apparatus shown in FIG. 3 has a structure in which one microwave generator 941 is connected to the annular waveguide 30 by the connection waveguide 951.

  The microwave generated in the microwave generation unit 941 propagates in the connection waveguide 951 in the direction indicated by the dashed arrow E, and is supplied into the annular waveguide 30. The microwave supplied into the annular waveguide 30 forms a standing wave in the annular waveguide 30 and is irradiated to the particulate collection unit 10.

  FIG. 4 shows the intensity distribution of the microwave irradiated by the microwave irradiation apparatus having one microwave generator shown in FIG. 4A shows the microwave intensity distribution of the particulate collection unit 10 in a direction perpendicular to the direction in which the exhaust flows, and FIG. The microwave intensity distribution of the collection part 10 is shown. FIG. 5 shows the intensity distribution of the microwave irradiated by the microwave irradiation apparatus in this embodiment. FIG. 5A shows the microwave intensity distribution of the particulate collection unit 10 in a direction perpendicular to the direction in which the exhaust flows, and FIG. The microwave intensity distribution of the collection part 10 is shown.

  In the microwave irradiation apparatus having one microwave generation unit shown in FIG. 3, as shown in FIG. 4, the difference between the strong part and the weak part of the microwave becomes large. As described above, when the difference between the strong and weak portions of the microwave is large, temperature unevenness occurs in the fine particle collecting unit 10, so that a region where the particulates such as PM are removed and a region where the particulates are not removed so much are generated. Therefore, the fine particle collecting unit 10 cannot be sufficiently regenerated.

  Thus, the difference between the strong part and the weak part of the microwave becomes large because the number of microwaves supplied to the annular waveguide 30 is one. This is because a microwave intensity distribution is generated corresponding to the antinodes and nodes of the generated standing wave.

  On the other hand, as shown in FIG. 5, in the microwave irradiation apparatus in the present embodiment, the difference between the strong and weak portions of the microwave becomes small. As described above, when the difference between the strong and weak portions of the microwave is small, the temperature of the fine particle collecting unit 10 is hardly uneven and is heated substantially uniformly. Thereby, removal of particulates, such as PM, in particulate collection part 10 can be performed uniformly, and reproduction of particulate collection part 10 can fully be performed.

  As described above, in the microwave heating apparatus according to the present embodiment, the difference between the strong part and the weak part of the microwave becomes small because the phase of the annular waveguide 30 is shifted by π / 2. This is because two microwaves are supplied. Thereby, in the annular waveguide 30, the node of the standing wave generated by one microwave becomes the antinode of the standing wave generated by the other microwave, and the standing wave generated by the other microwave is The node becomes the antinode of the standing wave produced by one microwave. In this way, in the present embodiment, the difference between the strong and weak portions of the microwave can be reduced, and the particulate collection unit 10 is heated substantially uniformly by the irradiated microwave. Can do.

(Measurement method of accumulated particulate matter such as PM)
Next, in the microwave irradiation apparatus according to the present embodiment, a method for measuring particulates such as PM deposited on the particulate collection unit 10 will be described. For this measurement, a microwave measurement unit 70 is used. In the present embodiment, the microwave measurement unit 70 is connected to the annular waveguide 30, and is generated by the first microwave generation unit 41 or the second microwave generation unit 42. The intensity of the microwave propagating through the tube 30 is measured. For the microwave measurement unit 70, for example, a Schottky diode formed of Si or the like is used.

  Specifically, when a microwave having a predetermined output is irradiated from the first microwave generation unit 41 or the second microwave generation unit 42, particulates such as PM are deposited on the particulate collection unit 10. If so, the microwave is absorbed by particulates such as PM in the particulate collection unit 10. The amount of microwaves absorbed depends on the amount of particulates such as PM deposited on the particulate collection unit 10.

  Therefore, if the amount of particulate matter such as PM deposited on the particulate collection unit 10 is large, the absorption of microwaves increases and the intensity of the microwaves in the annular waveguide 30 also decreases. The intensity of the microwave detected by the unit 70 is also reduced. Further, if the amount of particulate matter such as PM deposited on the particulate collection unit 10 is small, the absorption of microwaves is reduced, and the intensity of the microwaves in the annular waveguide 30 is not lowered so much. The intensity of the microwave detected by the measurement unit 70 is increased.

  Therefore, by measuring the intensity of the microwave in the microwave measurement unit 70, the amount of particulates such as PM deposited on the particulate collection unit 10 can be known. In this case, in order to measure the amount of particulate matter such as PM deposited in the particulate collection unit 10, the intensity of the microwave generated in the first microwave generation unit 41 or the second microwave generation unit 42 is measured. Is set lower than the case of removing particulates such as PM.

  In more detail, the case where particulates, such as PM, have accumulated in particulate collection part 10 is explained based on FIG. When the microwave generated by the first microwave generation unit 41 or the second microwave generation unit 42 is supplied to the annular waveguide 30, the microwave is transmitted through the annular waveguide 30 at a predetermined resonance frequency. Resonates at.

  In a state where nothing is deposited on the particulate collection unit 10, the microwave propagating in the annular waveguide 30 resonates at a predetermined resonance frequency, and the particulate collection unit 10 Is hardly absorbed because no particulates such as PM are present. Therefore, the microwave measurement unit 70 detects a microwave with a relatively high intensity at a predetermined resonance frequency.

  On the other hand, in the state where particulates such as PM, that is, soot are deposited on the particulate collection unit 10, the microwave propagating in the annular waveguide 30 is deposited on the particulate collection unit 10. The strength is reduced because it is absorbed by fine particles such as PM, and the resonance frequency is also shifted to the low frequency side. Accordingly, in this state, the microwave measurement unit 70 detects a microwave having a lower frequency and a lower intensity than the state in which nothing is deposited on the particulate collection unit 10.

  Therefore, when particulates such as PM are deposited on the particulate collection unit 10, microwaves are supplied from the first microwave generation unit 41 and the like, and the PM deposited on the particulate collection unit 10. It is removed by removing fine particles or supplying fuel and burning. At this time, ash after burning particulates such as PM may accumulate in the particulate collection unit 10.

  In the state where ash is deposited on the particulate collection unit 10, the microwave propagating in the annular waveguide 30 is deposited on the particulate collection unit 10 as compared to a state where no ash is deposited. As the ash is not absorbed, there is almost no decrease in strength, but the resonance frequency shifts to the low frequency side. Therefore, in this state, the microwave measuring unit 70 detects a microwave having a lower frequency than that in a state where nothing is deposited on the particulate collection unit 10 and having a relatively high intensity.

  In addition, when ash accumulates in the particulate collection part 10, it is necessary to remove ash from the particulate collection part 10, but since ash is the remainder after particulates, such as PM, burned, it is heated. Cannot be removed. Therefore, when ash accumulates on the particulate collection unit 10, it is necessary to remove the particulate collection unit 10 and perform maintenance such as water washing.

(Exhaust purification device control method 1)
Next, control of the exhaust emission control device based on information measured by the microwave measurement unit 70 in the present embodiment will be described with reference to FIG. This control is performed in the control unit 60 or the like.

  First, as shown in step 102 (S102), a microwave is generated from the first microwave generation unit 41 or the second microwave generation unit 42, and the microwave measurement unit 70 sets the intensity and frequency of the microwave. taking measurement.

  Next, as shown in step 104 (S104), it is determined whether or not the peak of the microwave intensity measured by the microwave measurement unit 70 in step 102 is equal to or lower than a predetermined intensity. More specifically, based on FIG. 6, it is determined whether or not the microwave intensity peak measured by the microwave measuring unit 70 is equal to or lower than a predetermined intensity indicated by a one-dot chain line Pa. When the peak of the intensity of the microwave measured by the microwave measuring unit 70 in step 102 is less than or equal to a predetermined intensity, a certain amount or more of particulates such as PM are deposited on the particulate collection unit 10 And the process proceeds to step 106. On the other hand, when the peak of the microwave intensity measured by the microwave measurement unit 70 in step 102 exceeds a predetermined intensity, the particulates such as PM deposited on the particulate collection unit 10 are constant. It is determined that the amount is less than the amount, and the process proceeds to step 108.

  In step 106 (S106), the forced regeneration which removes by irradiating microwaves to particulates, such as PM deposited on the particulate collection part 10, or injecting fuel is started. Thereafter, the process proceeds to step 102.

  In step 108 (S108), it is determined whether or not the frequency at which the intensity of the microwave measured by the microwave measuring unit 70 in step 102 is a predetermined frequency or higher. More specifically, based on FIG. 6, it is determined whether or not the frequency at which the intensity of the microwave measured by the microwave measurement unit 70 reaches a peak is equal to or higher than a predetermined frequency indicated by the alternate long and short dash line Fa. When the frequency at which the intensity of the microwave measured by the microwave measurement unit 70 in step 102 is a predetermined frequency or higher, the ash deposited on the particulate collection unit 10 is less than a certain amount. If it is determined that there is, the process proceeds to step 102. When the frequency at which the intensity of the microwave measured by the microwave measurement unit 70 in step 102 is less than a predetermined frequency, a certain amount or more of ash is deposited on the particulate collection unit 10 And the process proceeds to step 110.

  In step 110 (S110), since the particulate collection unit 10 needs to perform maintenance, a display for notifying that effect is displayed on a panel or display (not shown), and the process ends. Thereafter, the particulate collection unit 10 is maintained by a human hand.

  As described above, based on the information on the intensity and frequency of the microwave measured by the microwave measuring unit 70, the reproduction or the like in the fine particle collecting unit 10 can be performed.

(Control method 2 of exhaust gas purification device)
Next, another control of the exhaust emission control device based on information measured by the microwave measurement unit 70 in the present embodiment will be described with reference to FIGS. As shown in FIG. 8, this control is performed by measuring the temperature measured by the thermometer 80 installed in the front stage of the particulate collection unit 10 and the information on the intensity of the microwave measured by the microwave measurement unit 70. This is performed using the table shown in FIG. The thermometer 80 is a thermocouple.

  Such control is performed in the control unit 60. That is, the control unit 60 starts forced regeneration and finishes regeneration based on the table shown in FIG. 9 based on the temperature measured by the thermometer 80 and the microwave intensity information measured by the microwave measuring unit 70. Judging. This control will be described with reference to FIG. In this description, in the microwave measurement unit 70, when the detected microwave intensity is low, the output voltage output from the microwave measurement unit 70 is high, and when the microwave intensity is high, the microwave measurement unit 70 is high. It is assumed that the output voltage output from is low.

  First, as shown in step 202 (S202), a microwave is generated from the first microwave generating unit 41 or the second microwave generating unit 42, and the microwave measuring unit 70 measures the intensity of the microwave. At the same time, the temperature is measured by the thermometer 80.

  Next, as shown in step 204 (S204), the table shown in FIG. 9 is obtained from the microwave intensity (output voltage) measured by the microwave measurement unit 70 in step 202 and the temperature measured by the thermometer 80. It is judged whether it corresponds to forced regeneration of. If it corresponds to the forced regeneration of the table shown in FIG. 9, the process proceeds to step 206, and if it does not correspond to the forced regeneration, step 202 is performed again.

  In step 206 (S206), the forced regeneration which removes by irradiating microwaves to particulates, such as PM deposited on the particulate collection part 10, or injecting fuel is started.

  Next, as shown in step 208 (S208), a microwave is generated from the first microwave generation unit 41 or the second microwave generation unit 42, and the microwave measurement unit 70 measures the intensity of the microwave. At the same time, the temperature is measured by the thermometer 80.

  Next, as shown in step 210 (S210), the table shown in FIG. 9 is obtained based on the microwave intensity (output voltage) measured by the microwave measurement unit 70 in step 208 and the temperature measured by the thermometer 80. It is determined whether or not the playback ends. If it corresponds to the end of regeneration of the table shown in FIG. 9, it is determined that the regeneration of the DPF has ended, and the process proceeds to step 202. If it does not correspond to the end of regeneration, the regeneration of the DPF is continued. Step 208 is performed again.

  As described above, in the present embodiment, regeneration or the like in the particulate collection unit 10 can be performed based on the microwave information measured by the microwave measurement unit 70. The measurement of the intensity of the microwave in the microwave measurement unit 70 and the measurement of the temperature by the thermometer 80 may be constantly monitored.

  Further, as shown in FIG. 11, the exhaust emission control device in the present embodiment is provided with a first microwave measurement unit 71 in the first connection waveguide 51, and the second connection waveguide 52 in the first connection. Two microwave measuring units 72 may be provided.

[Second Embodiment]
Next, a second embodiment will be described.

  FIG. 12 shows an automobile 160 according to the second embodiment, to which the exhaust purification device 100 according to the first embodiment is attached. In automobile 160 in the present embodiment, exhaust gas generated in automobile 160 can be purified by exhaust purification device 100.

  FIG. 13 shows a management system in the present embodiment. The management system in the present embodiment includes a plurality of radio base stations 170 and a route management server 200 connected to the plurality of radio base stations 170. The automobile 160 is equipped with a radio 161 and can perform information communication with any of the radio base stations 170 by radio. In the present embodiment, the exhaust purification device 100 detects the amount of soot accumulated in the particulate collection unit 10 of the exhaust purification device 100 attached to the automobile 160. The amount of soot accumulated in the particulate collection unit 10 detected in the exhaust purification apparatus 100 is transmitted to the radio base station 170 via the radio 161 mounted on the automobile 160 and collected in the route management server 200. It is done. The route management server 200 predicts the amount of soot that will be deposited later based on the amount of accumulated soot and searches for the optimum route. The optimum route obtained in this way is transmitted from the radio base station 170 to the automobile 160.

  [Third Embodiment]

  The route management system according to the third embodiment will be described below with reference to the drawings. FIG. 14 is a diagram illustrating the route management system.

  The route management system 150 of the present embodiment includes a route management server 200 and a car navigation device (hereinafter referred to as navigation device) 300 mounted on a car 160 such as a delivery person. The route management server 200 and the navigation device 300 perform wireless communication via the wireless base station 170, for example. In the present embodiment, an automobile may be described as a vehicle. In addition, it is assumed that the device corresponding to the wireless device 161 in the second embodiment is included in the car navigation device 300.

  In addition, the automobile 160 according to the present embodiment is, for example, a truck on which a diesel engine is mounted. The automobile 160 includes a diesel particulate filter (DPF) for collecting particulate matter (PM) mainly composed of carbon that is discharged from a diesel engine. This DPF is the particulate collection unit 10 in the first embodiment or the like.

  The automobile 160 according to the present embodiment detects the amount of PM deposited on the DPF and notifies the navigation device 300 of the detected amount of PM.

  In addition, the automobile 160 includes an exhaust purification device 100 for cleaning PM accumulated in the DPF. The exhaust purification device 100 cleans and regenerates the DPF by burning and removing the PM trapped in the DPF.

  Cleaning means that PM collected by the DPF is burned and removed to regenerate the DPF collecting performance. Further, DPF regeneration includes continuous regeneration and forced regeneration. In the following embodiment, “cleaning” indicates forced regeneration, and a travel route is presented so as to reduce the number of forced regenerations.

The forced regeneration means that the PM collected in the DPF is forcibly regenerated using post injection, exhaust pipe injection, or the like. Continuous regeneration refers to, for example, continuously regenerating PM collected in the DPF using NO in exhaust gas as NO ₂ with an oxidation catalyst and using this as an oxidizing agent.

  In the route management system 150 of the present embodiment, the route management server 200 receives from the navigation device 300 a candidate for a travel route to the destination and the amount of detected PM. Next, the route management server 200 calculates an estimated amount of PM that is accumulated before reaching the destination for each travel route candidate.

  Then, the route management server 200 determines whether or not cleaning (forced regeneration) is performed in the automobile 160 before reaching the destination from the sum of the detected amount of PM and the estimated amount of PM.

  In other words, to what extent the route management server 200 of the present embodiment increases the amount of PM accumulated in the DPF of the current automobile 160 when the automobile 160 travels on the travel route listed as a candidate. Is estimated. Then, based on the estimation result, the route management server 200 determines whether or not cleaning (forced regeneration) is performed in the automobile 160 before reaching the destination.

  Then, when the DPF needs to be cleaned, the route management server 200 displays a travel route for reducing the number of times on the navigation device.

  In the following description, the amount of PM accumulated in the DPF is referred to as the PM accumulation amount, and the PM accumulation amount estimated by the route management server 200 and estimated to be accumulated by traveling on the travel route is indicated. This is called the estimated PM accumulation amount.

  As described above, in the present embodiment, the number of cleanings is based on the estimated PM accumulation amount that is the sum of the PM accumulation amount detected in the automobile 160 and the PM accumulation amount estimated to be accumulated by traveling on the travel route. A travel route with a small amount of travel is presented to the driver of the automobile 160.

  Hereinafter, the system configuration of the route management system 150 according to the present embodiment will be described with reference to FIG. FIG. 15 is a diagram illustrating the system configuration of the route management system.

  The route management system 150 of this embodiment includes a route management server 200 and a navigation device 300.

  The navigation device 300 may be fixed to the automobile 160 or may be a portable navigation device realized by a mobile terminal or the like. In addition, the navigation device 300 acquires the PM accumulation amount detected in the exhaust purification device 100 provided in the automobile 160.

  For example, when a navigation start request is input together with a driver ID for identifying a driver, an identifier for identifying a vehicle, a departure place, a destination, and the like, the navigation device 300 extracts a candidate for a travel route. Then, the navigation device 300 notifies the route management server 200 of the information input together with the start request, the travel route candidate, and the PM accumulation amount of the vehicle on which the navigation device 300 is mounted.

  The route management server 200 according to the present embodiment includes a driving pattern database 210, a vehicle database 220, a cargo database 230, a traffic jam database 240, a reference accumulation amount database 250, and a route management processing unit 260.

  The driving pattern database 210 of the present embodiment stores information indicating driving patterns for each driver. In other words, the driving pattern database 210 stores information indicating the ease of PM accumulation in the DPF for each driver.

  The vehicle database 220 of the present embodiment stores information indicating the ease of PM accumulation in the DPF for each vehicle. The load database 230 of the present embodiment stores information indicating the ease of PM accumulation in the DPF for each load. The traffic jam database 240 stores information indicating the ease of PM accumulation in the DPF for each traffic jam level.

  The reference accumulation amount database 250 stores information indicating the reference value of the PM accumulation amount for each road. Details of each database described above will be described later.

  The route management processing unit 260 calculates the estimated PM accumulation amount for each travel route based on the information for identifying the driver and the vehicle, the travel route candidate, the PM accumulation amount, and the like acquired from the navigation device 300. Then, the route management processing unit 260 determines whether or not forced regeneration is performed before the automobile 160 reaches the destination based on the estimated amount of accumulated PM, and when it is determined that forced regeneration is performed. The other travel route is displayed on the navigation device 300.

  Hereinafter, the route management server 200 of the present embodiment will be further described. FIG. 16 is a diagram illustrating an example of a hardware device of the route management server.

  The route management server 200 according to the present embodiment includes an input device 201, an output device 202, a drive device 203, an auxiliary storage device 204, a memory device 205, an arithmetic processing device 206, and an interface device 207, which are mutually connected by a bus B. including.

  The input device 201 is for inputting various types of information, and is realized by, for example, a keyboard or a mouse. The output device 202 is for outputting various types of information, and is realized by, for example, a display. The interface device 207 includes a modem, a LAN card, and the like, and is used for connecting to a network.

  The route management program is at least a part of various programs that control the route management server 200. The route management program is provided, for example, by distributing the storage medium 208 or downloading from the network. The storage medium 208 on which the route management program is recorded is a storage medium that records information optically, electrically, or magnetically, such as a CD-ROM, flexible disk, or magneto-optical disk, or information such as a ROM or flash memory. Various types of storage media, such as a semiconductor memory that electrically records data, can be used.

  The route management program is installed from the storage medium 208 to the auxiliary storage device 204 via the drive device 203 when the storage medium 208 storing the route management program is set in the drive device 203. The route management program downloaded from the network is installed in the auxiliary storage device 204 via the interface device 207.

  The auxiliary storage device 204 stores the installed route management program and also stores necessary files, data, and the like. The memory device 205 reads and stores the route management program from the auxiliary storage device 204 when the computer is activated. The arithmetic processing unit 206 implements various processes as described later according to the route management program stored in the memory device 205.

  The navigation device 300 according to the present embodiment is realized by a computer having the same hardware configuration as that of the route management server 200 shown in FIG.

  Next, each database included in the route management server 200 will be described with reference to FIGS. Each database described below may be provided in the auxiliary storage device 204 of the route management server 200, for example, or may be stored in a storage device outside the route management server 200.

  FIG. 17 is a diagram illustrating an example of an operation pattern database. The driving pattern database 210 according to the present embodiment includes a driver ID and a driving pattern as information items, which are associated with each other. In the following description, information including the value of the item “driver ID” and the value of the item “driving pattern” is referred to as driving pattern information.

  The value of the item “driver ID” is an identifier for identifying the driver who drives the vehicle, and is assigned to each driver.

  The value of the item “operation pattern” is further associated with three items. The item associated with the item “driving pattern” is an item indicating the shape of the road, and in the example of FIG. 17, “straight line”, “gradual curve”, and “steep curve”. Here, “gradual curve” and “steep curve” are, for example, a threshold value is set for the curve radius of a road, a curve having a curve radius less than or equal to the threshold value is defined as a steep curve, and a curve having a curve radius greater than the threshold value is defined as a gentle curve. It may be a curve.

  Moreover, in the example of FIG. 17, although the item which shows the shape of a road is set to three, it is not limited to this. Items other than the three items described above may be provided as items indicating the shape of the road.

  The values of the item “driving pattern” and the item “straight line” are index values indicating the ease of accumulation of PM in the DPF when the driver indicated by the driver ID drives the vehicle and travels on a straight road. is there. The values of the item “driving pattern” and the item “gradual curve” indicate the ease of PM accumulation in the DPF when the driver indicated by the driver ID drives the vehicle and travels on a gently curved road. It is an index value indicating The values of the item “driving pattern” and the item “steep curve” indicate the ease of accumulation of PM in the DPF when the driver indicated by the driver ID drives the vehicle and travels on a sharp curve road. It is an index value indicating

  Here, the ease of PM deposition in the DPF of the present embodiment will be described. The route management server 200 according to the present embodiment collects the travel history and the PM accumulation amount for each driver ID, and generates the operation pattern database 210 from the travel history and the PM accumulation amount history.

  Then, based on the travel history and the PM accumulation amount history, the reference PM accumulation amount is calculated in advance for the three items associated with the item “operation pattern”.

  The route management server 200 calculates, for example, the average value of the PM accumulation amount for each driver ID when the vehicle travels in a predetermined straight section on the road from the travel history for each driver ID and the PM accumulation amount. As a reference value for the amount of PM deposited. Further, the route management server 200 sets the average value of the PM accumulation amount for each driver ID when the vehicle travels in a predetermined gentle curve section on the road as a reference value for the PM accumulation amount of the gentle curve road. Further, the average value of the PM accumulation amount for each driver ID when traveling on a predetermined sharp curve section on the road is set as a reference value for the PM accumulation amount of the sharp curve.

  Next, the route management server 200 calculates the ratio of the PM accumulation amount on a predetermined straight road when the PM accumulation amount serving as the reference value is set to 1 from the travel history and the PM accumulation amount of each driver ID. This ratio becomes an index value indicating the ease of PM accumulation when the driver indicated by each driver ID drives the vehicle and travels on a straight road.

  The ease of PM accumulation when traveling on a gentle curve or a steep curve is also determined in the same manner.

  In FIG. 17, among the driving patterns corresponding to the driver ID “1”, the value corresponding to “straight line” is 0.9, the value of “slow curve” is 1.2, and “steep curve”. "Is 0.8.

  Therefore, when the driver indicated by the driver ID “1” drives the vehicle and travels on a straight road, the PM accumulation amount tends to be smaller than the reference value, and a gentle curve or a steep curve is displayed. It can be seen that when the vehicle travels, the amount of PM deposition tends to be larger than the reference value.

  The operation pattern database 210 of the present embodiment may be created in advance by, for example, an administrator of the route management system 150 and stored in the route management server 200.

  FIG. 18 is a diagram illustrating an example of a vehicle database. The vehicle database 220 of this embodiment has vehicle IDs and ease of PM accumulation as information items, and they are associated with each other. The value of the item “vehicle ID” indicates an identifier that identifies the vehicle. The value of the item “Ease of PM deposition” indicates the ease of PM deposition for each vehicle. In the following description, information including the value of the item “vehicle ID” and the value of the item “ease of PM deposition” is referred to as vehicle information.

  The value of the item “ease of PM accumulation” in the vehicle database 220 may be given in advance based on, for example, the weight of the vehicle or the total displacement. In the present embodiment, the item “Ease of PM deposition” has a reference value of 1.0.

  For example, if a vehicle of a specific vehicle type is a vehicle that is a reference for the item “ease of PM accumulation” based on the weight of the vehicle, the total displacement, etc., the item “PM accumulation of this vehicle” "Ease of ease" is 1.0.

  In FIG. 18, the value of the item “Ease of PM accumulation” is “1.5” for the vehicle with the vehicle ID “100”. Therefore, it can be seen that the vehicle with the vehicle ID “100” is a vehicle in which PM is more easily deposited than the reference vehicle.

  The vehicle database 220 of this embodiment may be created in advance by the administrator of the route management system of this embodiment and stored in the route management server 200.

  FIG. 19 is a diagram illustrating an example of a cargo database. The load database 230 of the present embodiment includes the load ID, weight, and ease of PM accumulation as information items. In the cargo database 230, the item “load ID” is associated with other items, and information including the value of the item “load ID” and the values of other items is referred to as load information.

  The value of the item “load ID” is an identifier for identifying the load, and is given for each load. The value of the item “weight” indicates the weight of the load indicated by the load ID. The value of the item “ease of PM deposition” indicates the ease of PM deposition for each load.

  The value of the item “ease of PM deposition” in the load database 230 may be determined based on the reference weight and the weight of the load.

  For example, if a load weighing 10 kg is mounted on a vehicle, the amount of PM deposited on the DPF is used as a reference value, and the value of the item “Ease of PM deposition” at this time is 1.0. To do. In this case, for example, the value indicating the ratio of the amount of PM accumulated on the DPF by mounting other loads on the vehicle with respect to the reference value is the value of the item “ease of PM deposition” of the other loads. It becomes.

  In the example of FIG. 19, the ease of depositing PM of a load having a load ID “10” and a weight of “50 kg” is “1.5”, and the vehicle is loaded with a reference load. It can be seen that PM tends to accumulate more easily than in the case of the above.

  The load database 230 may store a load ID and a weight, for example, when a load is loaded on a vehicle. In the present embodiment, for example, when the load ID and the weight are stored, the value of the item “ease of PM deposition” may be calculated from the relationship with the reference load weight. .

  FIG. 20 is a diagram illustrating an example of a traffic jam database. The traffic jam database 240 according to the present embodiment has sections and ease of PM accumulation as information items, and both are associated with each other. In the following description, information including the value of the item “section” and the value of the item “ease of PM accumulation” is referred to as traffic jam information.

  The value of the item “section” is a value that identifies a road section. In general, road information provided to a car navigation device or the like manages a road as a plurality of sections. The value of the item “section” indicates this section. Specifically, the value of the item “section” indicates the position information P of the start point and end point of the section. In FIG. 20, for example, the sections “P1, P2” indicate sections in which the start point is the point P1 and the end point is the point P2. Note that the position information may be indicated by latitude and longitude.

  The item “Ease of PM accumulation” is further associated with three items. The item associated with the item “Ease of PM accumulation” is an item indicating the state of traffic congestion on the road. In the example of FIG. 20, as “no traffic jam”, “light traffic jam”, and “large traffic jam” Yes. Here, “no traffic jam” indicates, for example, a state in which the vehicle can travel at a predetermined speed or higher. “Light traffic jam” indicates, for example, a state in which a vehicle train that continuously travels at a low speed or stops at a predetermined speed or lower continues for 1 minute or longer and 15 minutes or longer. “Large traffic jam” indicates, for example, a state in which a vehicle train that repeats low-speed traveling or stopping at a predetermined speed or less is 20 km or more.

  In this embodiment, for each section, the PM accumulation amount when the vehicle travels when there is no traffic jam is used as a reference value, and the value of the item “ease of PM accumulation” at this time is 1.0. . In the present embodiment, the value of the item “light traffic jam” indicates the ratio of the PM accumulation amount when the vehicle travels in the case of light traffic jam with respect to the reference value for each section. Further, in the present embodiment, the value of the item “large traffic jam” indicates the ratio of the PM accumulation amount when the vehicle travels in the heavy traffic jam with respect to the reference value for each section.

  In FIG. 20, in the section “P1, P2,” the value of the item “Ease of PM accumulation” is 1.1 in light traffic jams, and the item “Ease of PM deposition” in heavy traffic jams. It can be seen that the value of becomes 1.3.

  The traffic jam database 240 of this embodiment may be created in advance and stored in the route management server 200 by an administrator of the route management system 150 of this embodiment.

  FIG. 21 is a diagram illustrating an example of a reference accumulation amount database. The reference accumulation amount database 250 of the present embodiment has sections and reference accumulation amounts as information items, and they are associated with each other. In the following description, information including the value of the item “section” and the value of the item “reference deposition amount” is referred to as reference deposition information.

  The value of the item “reference accumulation amount” indicates a reference value of the PM accumulation amount when the vehicle travels in the corresponding section. At this time, the vehicle traveling in the corresponding section is preferably a vehicle that is used as a reference when the vehicle database 220 is generated. Moreover, it is preferable that the road which a section shows has no traffic jam.

  Note that the reference accumulation amount for each section may be an average value of the PM accumulation amount for each section in the travel history for all drivers collected by the route management server 200.

  The reference accumulation amount database 250 of the present embodiment may be stored in advance by, for example, an administrator of the route management system 150 of the present embodiment.

  Next, with reference to FIG. 22, the function of each device included in the route management system 150 of this embodiment will be described. FIG. 22 is a diagram for explaining the function of each device included in the route management system.

  First, the function of the route management server 200 of this embodiment will be described. The route management server 200 of this embodiment has a route management processing unit 260. The route management processing unit 260 is realized by the arithmetic processing device 206 of the route management server 200 reading and executing a route management program from the memory device 205 or the like.

  The route management processing unit 260 of the present embodiment includes an information acquisition unit 261, an estimated amount calculation unit 262, a forced regeneration determination unit 263, and a travel route output unit 264.

  The information acquisition unit 261 acquires various information transmitted from the navigation device 300, such as a driver ID, a vehicle ID, a travel route candidate, and a PM accumulation amount.

  The estimated amount calculation unit 262 calculates an estimated PM accumulation amount, which is an estimated amount of the PM accumulation amount when traveling on a travel route listed as a candidate, from various information acquired by the information acquisition unit 261. Details of the estimated amount calculation unit 262 of the present embodiment will be described later.

  The forced regeneration determination unit 263 is based on the estimated PM accumulation amount calculated by the estimated amount calculation unit 262, and is the forced regeneration performed when the vehicle travels on the travel route for which the estimated PM accumulation amount is calculated? Determine whether or not. In the present embodiment, for example, it may be determined that forced regeneration is performed when the estimated amount of accumulated PM becomes larger than a preset threshold value.

  The travel route output unit 264 outputs the travel route selected as the travel route to be presented to the navigation device 300 based on the determination result by the forced regeneration determination unit 263 to the navigation device 300.

  Next, the navigation apparatus 300 of this Embodiment is demonstrated. The navigation device 300 according to the present embodiment includes an input reception unit 310, a PM accumulation amount acquisition unit 320, a route candidate extraction unit 330, a display control unit 340, and a communication unit 350.

  The input receiving unit 310 inputs various information to the navigation device 300. Specifically, the input reception unit 310 receives input of a departure place, a destination, and a driver ID. In the present embodiment, for example, if the navigation device 300 is a portable device that is not provided in the vehicle, the input receiving unit 310 also receives an input of the vehicle ID of the vehicle on which the navigation device 300 is mounted.

  The PM accumulation amount acquisition unit 320 acquires the detected PM accumulation amount from the exhaust emission control device 100 provided in the vehicle.

  The route candidate extraction unit 330 receives input of a departure place and a destination, and extracts a candidate for a travel route from the departure place to the destination. The travel route candidates are extracted as a result of making a travel route candidate acquisition request to a server or the like in which road information existing outside the route management system 150 is stored.

  The display control unit 340 displays a travel route, map information, and the like on a display or the like that the navigation device 300 has. The communication unit 350 is responsible for communication between the navigation device 300 and the route management server 200.

  Next, the exhaust purification device 100 will be described. Exhaust gas purification apparatus 100 is provided in automobile 160 and cleans PM deposited on the DPF of automobile 160. Exhaust gas purification apparatus 100 of the present embodiment has a PM accumulation amount detection unit 110 in which a microwave measurement unit 70 is included. The PM accumulation amount detection unit 110 detects the PM accumulation amount accumulated on the DPF.

  In the example of FIG. 22, the PM accumulation amount detection unit 110 is provided inside the exhaust purification device 100, but is not limited thereto. The PM accumulation amount detection unit 110 may be provided independently outside the exhaust purification device 100.

  Next, with reference to FIG. 23, the estimated amount calculation unit 262 included in the route management processing unit 260 of the present embodiment will be described. FIG. 23 is a diagram illustrating the function of the estimated amount calculation unit.

  The estimated amount calculation unit 262 of the present embodiment includes a travel route selection unit 271, a road segmentation unit 272, an information reference unit 273, and a calculation unit 274.

  The travel route selection unit 271 selects a travel route for which the estimated PM accumulation amount is to be calculated from travel route candidates acquired from the navigation device 300.

  The road segmentation unit 272 classifies a road section included in the selected travel route into a straight line, a gentle curve, and a steep curve. In other words, the road classification unit 272 classifies the road section included in the selected travel route so as to correspond to the item indicating the shape of the road associated with the item “driving pattern” of the driving pattern database 210. To do.

  The information reference unit 273 refers to various types of information acquired by the information acquisition unit 261 from the navigation device 300 and each database of the route management server 200.

  The calculation unit 274 calculates the estimated PM accumulation amount for each section segmented by the road segmentation unit 272 in the selected travel route. Details of the calculation of the estimated PM deposition amount by the calculation unit 274 will be described later.

  The operation of each device included in the route management system 150 according to this embodiment will be described below with reference to FIGS. The processing illustrated in FIGS. 24 to 26 described below is performed before the driver starts driving the automobile 160, for example.

  FIG. 24 is a flowchart for explaining the operation of the navigation device.

  In the embodiment 300, the input receiving unit 310 receives various inputs (step S1101). Specifically, the input receiving unit 310 receives an input of a driver ID, a departure place, a destination, and the like input by a driver of the automobile 160 on which the navigation device 300 is mounted. For example, when receiving an input of a driver ID, the input receiving unit 310 may acquire the vehicle ID of the automobile 160 and may acquire the load ID associated with the vehicle ID in the load database 230.

  Subsequently, the navigation apparatus 300 acquires the PM accumulation amount detected by the PM accumulation amount detection unit 110 of the exhaust purification apparatus 100 by the PM accumulation amount acquisition unit 320 (step S1102).

  Subsequently, in the navigation device 300, the route candidate extraction unit 330 extracts travel route candidates from the departure point and the destination (step S1103). Note that the navigation device 300 may transmit the information of the departure place and the destination to an external server or the like through the communication unit 350 and receive the travel route candidate acquired by the external server.

  Next, the navigation device 300 transmits the acquired travel route candidate to the route management server 200 through the communication unit 350 (step S1104).

  Subsequently, the navigation device 300 determines whether or not the recommended travel route has been received from the route management server 200 through the communication unit 350 (step S1105).

  In step S1105, when the travel route presentation is not accepted, the navigation apparatus 300 stands by until the travel route presentation is accepted.

  In step S1105, when the presentation of the travel route is accepted (step S1106), the navigation apparatus 300 causes the display control unit 340 to display the travel route on the display (step S1107), and the process is terminated.

  Next, with reference to FIG. 25, the process of the route management server 200 of this embodiment will be described. FIG. 25 is a flowchart for explaining the operation of the route management server.

  The route management server 200 according to the present embodiment determines whether or not various information has been acquired from the navigation device 300 by the information acquisition unit 261 of the route management processing unit 260 (step S1201). Here, the various information acquired by the information acquisition unit 261 is information including a driver ID, a vehicle ID, a cargo ID, a PM accumulation amount, and a travel route candidate.

  If various types of information are not acquired in step S1201, the route management processing unit 260 waits until the above-described various types of information are acquired.

  When various types of information are acquired in step S1201, the route management processing unit 260 refers to the driving pattern database 210 by the information acquiring unit 261 and acquires driving pattern information corresponding to the acquired driver ID (step S1202). ).

  Next, the information acquisition unit 261 refers to the vehicle database 220 and acquires vehicle information corresponding to the acquired vehicle ID (step S1203). Subsequently, the information acquisition unit 261 refers to the load database 230 and acquires the load information corresponding to the acquired load ID (step S1204).

  Next, the information acquisition unit 261 refers to the traffic jam database 240 and acquires traffic jam information corresponding to the travel route from the travel route candidates (step S1205). Specifically, the information acquisition unit 261 may divide the road indicated by the acquired travel route candidate into sections and acquire the congestion information for each corresponding section in the congestion database 240.

  Subsequently, the route management processing unit 260 uses the estimated amount calculation unit 262 to select one travel route candidate from the acquired travel route candidates (step S1206).

  Subsequently, the route management processing unit 260 uses the driving pattern information, vehicle information, cargo information and traffic jam information acquired in steps S1202 to S1205 to estimate the estimated PM of the travel route selected by the estimated amount calculation unit 262. The amount of deposition is calculated (step S1207). Details of the processing in step S1207 will be described later.

  Subsequently, the route management processing unit 260 uses the forced regeneration determination unit 263 to determine whether or not cleaning (forced regeneration) is not performed before arrival at the destination when traveling according to the selected travel route candidate. (Step S1208). In other words, the forced regeneration determination unit 263 of the present embodiment determines whether or not the calculated estimated PM deposition amount is less than a preset threshold value. Note that the threshold value serving as a determination reference may be held in the forced regeneration determination unit 263. This threshold value may be predetermined for each vehicle, for example, may be acquired by the navigation device 300 together with the vehicle ID, and may be transmitted to the route management server 200.

  If forced regeneration is performed in step S1208, the estimated amount calculation unit 262 selects a candidate for the next travel route (step S1209), and the process returns to step S1207.

  If forced regeneration is not performed in step S1208, the route management processing unit 260 determines whether or not the processing from step S1207 has been performed on all the travel route candidates acquired from the navigation device 300 (step S1210).

  In step S1210, when all the travel route candidates are not processed, the route management processing unit 260 proceeds to step S1209.

  When all the travel route candidates are processed in step S1210, the route management processing unit 260 determines whether there is a travel route candidate that is not subjected to forced regeneration (step S1211).

  If there is a corresponding travel route candidate in step S1211, the travel route output unit 264 transmits the corresponding travel route candidate to the navigation device 300 as a travel route candidate that avoids forced regeneration (step S1212). ), The process is terminated.

  In step S1211, when there is no corresponding travel route candidate, the travel route output unit 264 transmits a notification indicating that there is no corresponding travel route candidate to the navigation device 300 (step S1213), and ends the process. To do.

  In the example of FIG. 25, the route management server 200 selects a travel route for which forced regeneration is not performed from the travel route candidates and presents it to the navigation device 300, but is not limited thereto. For example, when there is no travel route for which forced regeneration is not performed, the route management server 200 may present the travel route with the smallest number of times of forced regeneration to the navigation device 300.

  Next, with reference to FIG. 26, the process of the estimated amount calculation unit 262 of the present embodiment will be described. FIG. 26 is a flowchart for describing processing of the estimated amount calculation unit. FIG. 26 shows details of the process in step S1207 of FIG.

  The estimated amount calculation unit 262 of the present embodiment divides roads included in the selected travel route into sections (step S1301). Subsequently, the estimated amount calculation unit 262 classifies the roads in the section into straight lines, gentle curves, and steep curves for each section (step S1302). In other words, the estimated amount calculation unit 262 classifies the roads in the section for each section according to the shape of the road associated with the driving pattern.

  Subsequently, the estimated amount calculation unit 262 refers to the reference accumulation amount database 250 and acquires the reference value of the PM accumulation amount for each section (step S1303).

  Subsequently, the estimated amount calculation unit 262 calculates the estimated PM accumulation amount X by the following equation (1) (step S1304).

  In the equation shown in Equation 1, P1 is the position information of the departure place, and P2 is the position information of the destination. Further, f (section) indicates a reference value of the PM accumulation amount for each section, and a (driver ID) indicates driving pattern information including the driver ID. Specifically, it is associated with the driver ID. The driving pattern value corresponding to the road shape in the section is shown. Further, b (vehicle ID) is vehicle information including the vehicle ID, and specifically indicates a value of the ease of accumulation of PM associated with the vehicle ID.

  Further, c (load ID) indicates load information including the load ID, and specifically indicates a value of the ease of accumulation of PM associated with the load ID. Further, d (section) indicates traffic jam information for each section, and specifically indicates a value of PM accumulation ease associated with the type of traffic jam for each section.

  That is, the estimated amount calculation unit 262 according to the present embodiment facilitates PM deposition associated with various items that affect the manner of PM deposition for each section from the departure point to the destination. The product of the value serving as the index of the height and the reference value of the PM deposition amount for each section calculated from the past history is obtained.

  This product is a PM accumulation amount that is estimated to increase as the automobile 160 travels along the travel route. In the following description, the PM deposition amount estimated to increase is referred to as an estimated increase PM deposition amount. Then, the estimated amount calculation unit 262 calculates the sum of the estimated increased PM accumulation amount and the PM accumulation amount already accumulated in the automobile 160 as the estimated PM accumulation amount estimated to be accumulated when the vehicle arrives at the destination. It is said.

  In the present embodiment, a candidate for a travel route in which the estimated PM accumulation amount is less than the threshold value is a travel route that can reach the destination without performing forced regeneration.

  Hereinafter, the processing of the route management server 200 according to the present embodiment will be further described with reference to FIGS.

  FIG. 27 is a diagram illustrating an example of a travel route. FIG. 27 shows a travel route when the departure point is point A and the destination is point B. In the example of FIG. 27, it is assumed that the first travel route and the second travel route are cited as travel route candidates when the departure point is point A and the destination is point B.

  The road of the first travel route is section 1 from point A to curve 1, section 2 from the start point to the end point of curve 1, section 3 from the end point of curve 1 to the start point of curve 2, and from the start point to the end point of curve 2 The section 4 is included. In addition, the road of the first travel route includes a section 5 from the end point of curve 2 to the start point of curve 3, a section 6 from the start point of curve 3 to the end point, a section 7 from the end point of curve 3 to the start point of curve 4, and the curve A section 8 from the start point of 4 to the end point of the curve 4 and a section 9 from the end point of the curve 4 to the B point are included. That is, the first travel route includes nine sections.

  The road of the second travel route includes a section 11 from the point A to the start point of the curve 5, a section 12 from the start point to the end point of the curve 5, and a section 13 from the end point of the curve 5 to the point B. That is, the second travel route includes three sections.

  Here, the curves 1 and 2 of the first travel route are gentle curves, and the curves 3 and 4 are steep curves. The road in the section between the curves is a straight line. The curve 5 of the second travel route is a gentle curve, and the road in the section other than the curve is a straight line.

  The vehicle 160 traveling from the point A to the point B has a vehicle ID “101”, and the driver driving the vehicle 160 is a driver having a driver ID “1”. Further, it is assumed that a load having a load ID “10” is loaded on the automobile 160.

  Further, it is assumed that a light traffic jam occurs on the first travel route, and a large traffic jam occurs on the second travel route.

  In this case, since the road in the section 1 of the first travel route is a straight line, the estimated amount calculation unit 262 acquires a value “0.9” indicating the ease of PM accumulation as the driving pattern information in the section 1. (See FIG. 17). Moreover, the road of the section 2 is a gentle curve. Therefore, the estimated amount calculation unit 262 acquires the value “1.2” indicating the ease of PM accumulation as the operation pattern information of the section 2.

  In addition, the estimated amount calculation unit 262 acquires a value “0.7” indicating ease of PM accumulation as vehicle information in the sections 1 to 9 (see FIG. 18). The automobile 160 is loaded with a load ID “10”. Therefore, the estimated amount calculation unit 262 acquires a value “1.5” indicating the ease of PM accumulation as the load information in the sections 1 to 9 (see FIG. 19).

  Moreover, the estimated amount calculation part 262 acquires the value which shows the ease of accumulation of PM according to the state of the traffic congestion which has generate | occur | produced in each area as traffic congestion information of the areas 1-9 of a 1st driving | running route.

  With reference to FIG. 28, an example of the traffic jam information of the sections 1 to 9 will be described. FIG. 28 is a first diagram illustrating an example of traffic jam information.

  In FIG. 28, the PM accumulation amount corresponding to the three traffic congestion states of no traffic jam, light traffic jam, and heavy traffic jam is shown for each of the sections 1 to 9 of the first travel route. Each value shown in FIG. 28 is held in the traffic jam database 240 as a record when, for example, the driver with the driver ID “1” traveled on the first travel route in the car 160 with the vehicle ID “101” in the past. May be. 28 may be an average value of values acquired from a plurality of vehicles that have traveled on the first travel route in the past.

  The estimated amount calculation unit 262 of the present embodiment calculates a “value indicating the ease of PM deposition” for each section, which is calculated based on the PM deposition amount for each section and the reference value for the deposition amount for each section. Is obtained.

  Then, the estimated amount calculation unit 262 according to the present embodiment refers to the reference accumulation amount database 250, refers to the reference value of the PM accumulation amount for each section, and “ease of PM deposition for each section acquired as each piece of information. The estimated increase PM deposition amount, which is the product of “a value indicating“, ”is obtained. Then, the estimated amount calculation unit 262 calculates the sum of the estimated increased PM accumulation amount for each section and the PM accumulation amount detected by the navigation device 300 as the estimated PM accumulation amount when traveling on the first travel route. To do.

  Next, an example of the traffic jam information in the sections 1 to 3 will be described with reference to FIG. FIG. 29 is a second diagram illustrating an example of traffic jam information.

  In FIG. 29, the PM accumulation amount corresponding to three traffic congestion states of no traffic jam, light traffic jam, and heavy traffic jam is shown for each of the sections 1 to 3 of the second travel route. Each value shown in FIG. 29 is a traffic jam database as a record when the driver with the driver ID “1” traveled the second driving route in the past with the car 160 with the vehicle ID “101”, as in FIG. 240 may be held. Each value shown in FIG. 29 may be an average value of values acquired from a plurality of vehicles that have traveled on the second travel route in the past.

  The estimated amount calculation unit 262 obtains the estimated increased PM deposition amount in the sections 1 to 3 as in the case of the first travel route, and calculates the total estimated increased PM deposition amount and the PM deposition amount detected in the navigation device 300. Is the estimated PM accumulation amount when traveling on the second travel route.

  In the present embodiment, the estimated PM accumulation amount for each travel route is calculated as described above. Next, the determination by the forced regeneration determination unit 263 will be described with reference to FIG.

  FIG. 30 is a diagram illustrating the determination by the forced regeneration determination unit. In FIG. 30, the graph which shows estimated PM accumulation amount about each of the 1st driving | running route and the 2nd driving | running route is shown for every traffic congestion state.

  In FIG. 30, the threshold value TH for determining whether or not forced regeneration is performed is 1.5 [g / l]. In FIG. 30, the PM accumulation amount acquired from the navigation device 300 is 1.3 [g / l].

  In FIG. 30, in the first travel route, when there is no traffic jam, the estimated PM accumulation amount is less than the threshold value TH when arriving at the destination. In the first travel route, in the case of light traffic jam or heavy traffic jam, the estimated PM accumulation amount is equal to or greater than the threshold TH when the vehicle arrives at the destination.

  On the other hand, in the second traveling route, the estimated PM accumulation amount does not exceed the threshold value regardless of the traffic congestion state. However, the second travel route is longer than the first travel route, and the arrival time to the destination is expected to be later than the first travel route.

  Here, it is assumed that a light traffic jam has occurred on the first travel route and a large traffic jam has occurred on the second travel route.

  In this case, since the estimated PM accumulation amount is equal to or greater than the threshold TH in the first travel route, the forced regeneration determination unit 263 excludes the first travel route from the options as the travel route for which forced regeneration is performed. Further, since the estimated PM accumulation amount is less than the threshold value TH in the second travel route, the forced regeneration determination unit 263 sets the travel route to be presented to the navigation device 300 as a travel route in which forced regeneration is not performed.

  Therefore, the route management server 200 outputs the second travel route to the navigation device 300 as a travel route that improves fuel consumption by the travel route output unit 264. In response to this output, the navigation device 300 displays information indicating that the travel route improves fuel efficiency and the second travel route.

  Further, for example, a case where the first travel route is free of traffic will be described. In this case, the estimated PM accumulation amount is less than the threshold value TH when the vehicle arrives at the destination even in the first travel route.

  Therefore, the travel route output unit 264 outputs the first travel route and the second travel route to the navigation device 300 as travel routes that improve fuel efficiency.

  In this case, for example, the travel route output unit 264 improves the fuel efficiency of the second travel route more than the first travel route, and the travel distance of the first travel route is greater than that of the second travel route. Shortness etc. may be output to the navigation device 300 together with the travel route.

  The navigation device 300 receives these outputs and displays the first travel route and the second travel route as travel routes that improve fuel efficiency. At this time, the navigation device 300 may display each travel route in the order of the shortest travel distance of the travel route, or may display each travel route in the order of the smaller PM accumulation amount. In addition, the navigation device 300 may accept a sort operation for changing the display order of each travel route in this order.

  As described above, according to the present embodiment, when selecting a travel route, the estimated increase PM deposition amount accumulated by traveling on the travel route is calculated, and the PM deposition amount detected from the vehicle is calculated. By adding, the estimated PM accumulation amount until arrival at the destination is calculated. And in this Embodiment, based on this estimated PM deposition amount, the driving | running route which reduces the frequency | count of cleaning is selected and shown.

  Therefore, according to the present embodiment, the number of cleanings of the deposited particulate matter can be reduced.

  Furthermore, in the present embodiment, when calculating the increase estimated PM accumulation amount, for various parameters that affect the PM accumulation method, such as the driver, the vehicle, the load, the shape of the road, the traffic congestion state, A value indicating the ease of PM deposition is assigned, and the estimated increase PM deposition amount is calculated based on this value. In other words, in the present embodiment, various parameters that affect the manner of PM deposition are weighted, and from this weight and the reference value of the PM deposition amount calculated from the travel history collected in the past The estimated increase PM deposition amount is calculated.

  Therefore, according to the present embodiment, the accuracy of estimation of the PM accumulation amount that increases by traveling on the travel route is improved, so that the accuracy of determination as to whether or not cleaning is performed can also be improved. The travel route that reduces the number of times can be presented.

  In this embodiment, as an example of parameters affecting the PM deposition method, each database shown in FIGS. 17 to 20 has been described. However, the types of parameters are not limited to this. This parameter may include, for example, weather information, information indicating the road surface condition, and the like, and any parameter may be used as long as it is a parameter related to the PM deposition method.

  In the present embodiment, the navigation apparatus 300 transmits the departure place and the destination to an external server to obtain a travel route candidate. However, the present invention is not limited to this. The route management server 200 according to the present embodiment may have a navigation function that receives the input of the departure place and the destination and extracts and provides candidates for the travel route. In that case, the navigation apparatus 300 may transmit information on the departure place and the destination to the route management server 200.

  Moreover, although the diesel engine is mounted on the automobile 160 described above, the present invention is not limited to this. The automobile 160 may be a vehicle equipped with an engine other than a diesel engine.

  Although the embodiment has been described in detail above, it is not limited to the specific embodiment, and various modifications and changes can be made within the scope described in the claims.

In addition to the above description, the following additional notes are disclosed.
(Appendix 1)
An annular microwave transmission line;
A first microwave generator connected to the annular microwave transmission path;
A second microwave generator connected to the annular microwave transmission path;
A microwave transmission line;
A first microwave generator connected to the annular microwave transmission path;
Between the annular microwave transmission path, between the annular microwave transmission path and the first microwave generator, or between the annular microwave transmission path and the second microwave generator. A microwave measuring unit connected to
Have
The microwave irradiation characterized in that the microwave generated in the first microwave generator and the microwave generated in the second microwave generator have the same frequency and different phases apparatus.
(Appendix 2)
A first connection waveguide for connecting the annular microwave transmission path and the first microwave generator;
A second connecting waveguide connecting the annular microwave transmission path and the second microwave generating unit;
Have
A distance L between a connection portion between the annular microwave transmission path and the first connection waveguide and a connection portion between the annular microwave transmission path and the second connection waveguide is: , Λ is the wavelength of the microwave, and N is a positive integer,
L = (2N−1) × λ / 4
The microwave irradiation apparatus according to Supplementary Note 1, wherein the microwave irradiation apparatus is.
(Appendix 3)
A first connection waveguide for connecting the annular microwave transmission path and the first microwave generator;
A second connecting waveguide connecting the annular microwave transmission path and the second microwave generating unit;
Have
A distance L between a connection portion between the annular microwave transmission path and the first connection waveguide and a connection portion between the annular microwave transmission path and the second connection waveguide is: , Where λ is the microwave wavelength,
The microwave irradiation apparatus according to appendix 1, wherein the microwave irradiation apparatus is any one of λ / 4, 3λ / 4, 5λ / 4, and 7λ / 4.
(Appendix 4)
Additional notes 1 to 3, wherein a phase difference between the microwave generated in the first microwave generator and the microwave generated in the second microwave generator is π / 2. The microwave irradiation apparatus in any one.
(Appendix 5)
The microwave irradiation apparatus according to any one of appendices 1 to 4, wherein a frequency of the microwave is 0.1 GHz or more and 3.0 GHz or less.
(Appendix 6)
The microwave irradiation device according to any one of appendices 1 to 5,
A particulate collection unit for collecting particulates contained in the exhaust;
A housing unit that includes a housing main body that covers the particulate collection unit, and an exhaust inlet and an exhaust outlet connected to the housing main body;
A control unit;
Have
An exhaust emission control device, wherein the particulate collection unit is irradiated with microwaves from the microwave irradiation device.
(Appendix 7)
The supplementary note 6 is characterized in that the control unit determines whether or not a certain amount or more of soot has accumulated in the particulate collection unit based on the intensity of the microwave measured by the microwave measurement unit. The exhaust emission control device described.
(Appendix 8)
The control unit determines whether or not a certain amount or more of ash is accumulated in the particulate collection unit based on the frequency of the microwave measured by the microwave measurement unit. 8. An exhaust emission control device according to 7.
(Appendix 9)
The control unit determines whether or not soot accumulated in the particulate collection unit has been removed based on the intensity of the microwave measured by the microwave measurement unit. Exhaust gas purification device described in 1.
(Appendix 10)
The particulate collection unit is provided with a thermometer,
The control unit determines whether to regenerate the particulate collection unit based on the temperature measured by the thermometer and the microwave intensity measured by the microwave measurement unit, and the particulate collection unit. The exhaust emission control device according to appendix 6, wherein it is determined whether or not the regeneration is finished.
(Appendix 11)
The control unit is provided with a table indicating a relationship between the temperature measured by the thermometer used for determining the regeneration of the particulate collection unit and the intensity of the microwave measured by the microwave measurement unit. The exhaust emission control device according to appendix 10, wherein
(Appendix 12)
An automobile having the exhaust emission control device according to any one of appendices 6 to 11.
(Appendix 13)
The car described in Appendix 12,
A wireless base station for wirelessly communicating information with the vehicle;
A management system comprising:
(Appendix 14)
A management system for performing route management including a navigation device mounted on the automobile and a server connected to the radio base station,
The server
For each travel route candidate obtained from the navigation device, when the vehicle travels on the travel route and arrives at the destination, it is collected in the particulate collection unit disposed in the exhaust passage of the engine of the vehicle. An estimated amount calculating unit for calculating an estimated amount of exhaust particulates to be discharged;
Based on the estimated amount, a travel route output unit that causes the navigation device to display a travel route that minimizes the number of forced regenerations of the particulate collection unit,
14. The management system according to appendix 13.

DESCRIPTION OF SYMBOLS 10 Fine particle collection part 20 Housing | casing part 20a Housing | casing main-body part 20b Inlet 20c Outlet 30 The annular waveguide 41 The 1st microwave generation part 42 The 2nd microwave generation part 51 The 1st connection waveguide 52 Second connection waveguide 60 Control unit 70 Microwave measurement unit

Claims (13)

An annular microwave transmission line;
A first microwave generator connected to the annular microwave transmission path;
A second microwave generator connected to the annular microwave transmission path;
A microwave transmission line;
A first microwave generator connected to the annular microwave transmission path;
Between the annular microwave transmission path, between the annular microwave transmission path and the first microwave generator, or between the annular microwave transmission path and the second microwave generator. A microwave measuring unit connected to
Have
The microwave irradiation characterized in that the microwave generated in the first microwave generator and the microwave generated in the second microwave generator have the same frequency and different phases apparatus. A first connection waveguide for connecting the annular microwave transmission path and the first microwave generator;
A second connecting waveguide connecting the annular microwave transmission path and the second microwave generating unit;
Have
A distance L between a connection portion between the annular microwave transmission path and the first connection waveguide and a connection portion between the annular microwave transmission path and the second connection waveguide is: , Λ is the wavelength of the microwave, and N is a positive integer,
L = (2N−1) × λ / 4
The microwave irradiation apparatus according to claim 1, wherein:   The phase difference between the microwave generated in the first microwave generator and the microwave generated in the second microwave generator is π / 2. The microwave irradiation apparatus as described in.   The microwave irradiation apparatus according to any one of claims 1 to 3, wherein a frequency of the microwave is 0.1 GHz or more and 3.0 GHz or less. The microwave irradiation apparatus according to any one of claims 1 to 4,
A particulate collection unit for collecting particulates contained in the exhaust;
A housing unit that includes a housing main body that covers the particulate collection unit, and an exhaust inlet and an exhaust outlet connected to the housing main body;
A control unit;
Have
An exhaust emission control device, wherein the particulate collection unit is irradiated with microwaves from the microwave irradiation device.   The control unit determines whether or not a certain amount or more of soot has accumulated in the particulate collection unit based on the intensity of the microwave measured by the microwave measurement unit. Exhaust gas purification device described in 1.   The control unit determines whether or not a certain amount or more of ash is accumulated in the particulate collection unit based on a frequency of the microwave measured by the microwave measurement unit. Or the exhaust emission control device according to 6.   6. The control unit according to claim 5, wherein the control unit determines whether or not the soot accumulated in the particulate collection unit has been removed based on the intensity of the microwave measured by the microwave measurement unit. 6. An exhaust emission control device according to 6. The particulate collection unit is provided with a thermometer,
The control unit determines whether to regenerate the particulate collection unit based on the temperature measured by the thermometer and the microwave intensity measured by the microwave measurement unit, and the particulate collection unit. 6. The exhaust emission control device according to claim 5, wherein it is determined whether or not the regeneration of the engine has been completed.   The control unit is provided with a table indicating a relationship between the temperature measured by the thermometer used for determining the regeneration of the particulate collection unit and the intensity of the microwave measured by the microwave measurement unit. The exhaust emission control device according to claim 9.   An automobile having the exhaust emission control device according to any one of claims 5 to 10. An automobile according to claim 11;
A wireless base station for wirelessly communicating information with the vehicle;
A management system comprising: A management system for performing route management including a navigation device mounted on the automobile and a server connected to the radio base station,
The server
For each travel route candidate obtained from the navigation device, when the vehicle travels on the travel route and arrives at the destination, it is collected in the particulate collection unit disposed in the exhaust passage of the engine of the vehicle. An estimated amount calculating unit for calculating an estimated amount of exhaust particulates to be discharged;
Based on the estimated amount, a travel route output unit that causes the navigation device to display a travel route that minimizes the number of forced regenerations of the particulate collection unit,
The management system according to claim 12.