Abstract:
In a parts management system for a mobile unit, a detection unit is provided at the mobile unit and adapted to detect information related to management of parts of the mobile unit such as a vehicle. A service center management unit is provided at a service center and permitted to communicate to the detection unit. The service center management unit is adapted to produce information for a user of the mobile unit according to the information related to the management of the parts of the mobile unit and detected by the detection unit. An information unit is permitted to communicate to the service center management unit and adapted to send to the user of the mobile unit the information for the user of the mobile unit and produced by the seance center management unit.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    The present invention relates to a parts management system and a parts management method for mobile units, which are capable of managing information related to parts for mobile units, such as information related to replacement time of vehicle&#39;s parts.  
           [0002]    Conventionally, to replace currently used consumable parts of vehicles with new ones, it is normally required that users themselves record or memorize when consumable parts of their own vehicles should be replaced. The users are also able to individually make contact with dealers dealing with vehicle parts, so that the users can order necessary parts and decide the date and time for actual replacement work  
           [0003]    However, when the replacement time of consumable parts is managed by users themselves, it may happen that some users are not able to decide appropriate replacement time of the parts. To appropriately decide the replacement time is considerably difficult in technical matters and complicated for ordinary uses. Further, it is frequent that work to actually replace an old parts with new one imposes a burden on vehicle users.  
         SUMMARY OF THE INVENTION  
         [0004]    The Present invention is directed to overcome the foregoing problems. Accordingly, it is an object of the present invention to provide a parts management system and a parts management method for mobile units, which are capable of suitably managing information related to parts of mobile units and reducing a burden of parts management imposed on users of the mobile unit,  
           [0005]    In order to realize such object, as one aspect of the present invention, a parts management system comprises a detection device provided at the mobile unit and adapted to detect information related to management of parts of the mobile unit; a service center management device provided at a service center and permitted to communicate to the detection device, the service center management device being adapted to produce information for a user of the mobile unit according to the information related to the management of the parts of the mobile unit and detected by the detection device; and a information device permitted to communicate to the service center management device and adapted to send to the user of the mobile unit the information for the user of the mobile unit and produced by the service center management device,  
           [0006]    Accordingly, the service center management device produces the information for the user of the mobile unit according to the information related to the management of the parts of the mobile unit and detected by the detection device, and the information device sends to the user of the mobile unit the information for the user of the mobile unit and produced by the service center management device. Thus it is possible to manage the parts of the mobile unit at the service center and to provide the user with suitable information, thereby suitably managing the parts and reducing a burden to the user. It is not always necessary to provide the information device at the mobile unit, but such information can be sent to a user&#39;s telephone, user&#39;s cellular-phone, or the like, as a voice massage; a facsimile; or an e-mail, In addition, detecting the information about management of the parts can be executed when the engine is started. Alternatively such detection may be conducted whenever a constant period of time elapses after the engine start. As the mobile unit, a vehicle, a small craft, and others can be adopted.  
           [0007]    In order to achieve the above object, according to another aspect of the present invention, a parts management system for a mobile unit comprises a detection device provided at the mobile unit and adapted to detect information related to management of parts of the mobile unit; a service center management device provided at a service center and permitted to communicate to the detection device, the service center management device being adapted to produce information for a parts supplier according to the information related to the management of the parts of the mobile unit and detected by the detection device; a parts supplier management device provided as a unit of the parts supplier and permitted to communicate to the service center management device; and a information device permitted to communicate to the service center management device, wherein the parts supplier management device is adapted to produce information related to part supply according to the information for the parts supplier, the service center management device is adapted to produce information for the user of the mobile unit according to the information related to the part supply and the information device is adapted to send to the user of the mobile unit the information for the user of the mobile unit.  
           [0008]    According to this configuration, the service center management device produces the information for the parts supplier according to the information related to the management of the parts of the mobile unit and detected by the detection device, the parts supplier management device produces the information related to the part supply according to the information for the parts supplier, the service center management device produces the information for the user of the mobile unit according to the information related to the part supply and the information device sends to the user of the mobile unit the information for the user of the mobile unit. It is therefore possible to manage the parts of the mobile unit at the service center, thus providing suitable information with the user. Managing the parts can be done in a suitable manner. Because the user collectively obtains the required information without contacting with each dealer who supplies each part, it is possible to reduce the burden to the user. It is not always necessary to provide the information device at the mobile unit, but such information can be sent to a user&#39;s telephone, user&#39;s cellular-phone, or the like, as a voice massage; a facsimile; or an e-mail.  
           [0009]    It is preferable that the information device is provided at the mobile unit. It is therefore possible to promptly provide the user of the mobile unit with the required information.  
           [0010]    It is also preferable that the mobile unit is provided with a phone conversation device for making phone conversations from the user to the service center in accordance with the information sent from the information device.  
           [0011]    This configuration makes it possible to orally transmit the order information to the operator in the service center, thus easily coping with the complicated order, and so on. In this case, a receivi 6 ng device for receiving the demand of phone conversations may be provided at the mobile unit, so that the receiving unit, according to the instruction, makes the phone conversations device automatically start the phone conversations.  
           [0012]    It is also preferable to provide a transmitting device at the mobile unit for transmitting a demand to the service center management device, the demand being determined by the user of the mobile unit with reference to the information sent from the information device, so that the demand the user of the mobile unit decides can be sent a service center.  
           [0013]    Preferably, the service center management device is adapted to receive the demand transmitted from the transmitting device and produce order information of at least one of the parts for the parts supplier according to the demand, thus transferring the order information to the parts supplier. The order information is therefore produced according to the demand the user of the mobile unit decides.  
           [0014]    Still preferably) the information for the user of the mobile unit ( 300 ) is information related to at least one of the parts required for replacement in the mobile unit, so that the date and time for replacing the parts can be managed in a certain manner.  
           [0015]    Still preferably, the information related to the management of the parts of the mobile unit and detected by the detection device is information indicating a replacement date and time of at least one of the parts of the mobile unit. By this configuration, when a constant period of time elapses from the date and time after old parts were replaced by new ones, the information device is able to send to the user of the mobile unit the information notifying when the parts must be replaced.  
           [0016]    It is also preferable that the information related to the management of the parts in the mobile unit and detected by the detection device is information indicating a mileage of the mobile unit In this structure, when the mobile unit runs up to a constant mileage after an old parts were replaced by new one, it is possible for the information device to send to the user of the mobile unit the information notifying that the parts must be replaced again.  
           [0017]    Preferably, the detection device includes device for detecting a position at which the mobile unit exists, and the service center management device produces the information for the user of the mobile unit according to the detected position of the mobile unit, In this configuration, it is possible to indicate to the user of the mobile unit a dealer whose shop is located close to the mobile unit.  
           [0018]    It is preferable that the mobile unit comprises an input device for inputting the demand into the transmitting device, the demand specifying one of the parts suppliers, and the transmitting device is adapted to transmit the demand inputted from the input device to the service center management device.  
           [0019]    In order to achieve such object, according to further aspect of the present invention, there is provided a parts management method for a mobile unit, comprising the steps of: detecting, in the mobile unit, information related to management of parts of the mobile unit; producing, in a service center, information for a user of the mobile unit according to the detected information related to the management of the parts of the mobile unit; and sending to the user of the mobile unit the produced information for the user of the mobile unit.  
           [0020]    Accordingly, the information for the user of the mobile unit is produced in the service center according to the information related to the management of the parts of the mobile unit, and the produced information for the user of the of the mobile unit is sent to the user of the mobile unit. It is therefore possible to manage the parts of the mobile unit at the service center and to provide the user with suitable information about parts replacement, thus suitably managing the parts and reducing a burden to the user. In addition, the detection of the information of the management of the parts is executed when the engine is started, or whenever a constant period of time elapses after the engine start.  
           [0021]    In order to achieve the foregoing object, according to still another aspect of the present invention, there is provided a parts management method for a mobile unit, comprising the steps of: detecting, at the mobile unit, information related to management of parts of the mobile unit; producing, at a service center, information for a parts supplier according to the detected information related to the management of the parts of the mobile unit; producing, at the parts supplier side, information related to part supply according to the information for the parts supplier; producing, at the service center, information for the user of the mobile unit according to the information related to the part supply, and sending to the user of the mobile unit the information for the user of the mobile unit.  
           [0022]    The information for the user of the mobile unit may be information related replacement parts of the mobile unit In this structure, it is possible to certainly manage the date and time for parts replacement.  
           [0023]    Incidentally, in order do easily understand the present invention, the reference characters in parentheses are added to the elements of the present invention, respectively, but the present invention is not limited to the structures shown in the figures described hereinafter.  
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0024]    Other objects and aspects of the present invention will become apparent from the following description of embodiments with reference to the accompanying drawings in which:  
         [0025]    [0025]FIG. 1 is a block diagram showing a schematic configuration of a parts management system of an embodiment according to the present invention;  
         [0026]    [0026]FIG. 2 is a block diagram showing units with which a vehicle is equipped;  
         [0027]    [0027]FIG. 3 is a view showing flows and contents of items of information in replacing parts of the vehicle,  
         [0028]    [0028]FIG. 4 is a flowchart partly showing the processing executed in the vehicle;  
         [0029]    [0029]FIG. 5 is a flowchart partly showing the processing executed in a service center;  
         [0030]    [0030]FIG. 6 is a flowchart partly showing the processing executed by a dealer or the like;  
         [0031]    [0031]FIG. 7 is a flowchart partly showing the processing executed in the service center;  
         [0032]    [0032]FIG. 8 is a flowchart partly showing the processing executed in the vehicle;  
         [0033]    [0033]FIG. 9 is a flowchart partly showing the processing executed in the service center;  
         [0034]    [0034]FIG. 10 is a flowchart partly showing the processing executed by the dealer or the like;  
         [0035]    [0035]FIG. 11 is an example of displayed information transferred from a vehicle center to the service center;  
         [0036]    [0036]FIG. 12 is an example of displayed information transferred from the service center to the dealer or the like;  
         [0037]    [0037]FIG. 13 is an example of displayed information transferred from the dealer or the like to the service center;  
         [0038]    [0038]FIG. 14 is an example of displayed information transferred from the service center to the vehicle; and  
         [0039]    [0039]FIG. 15 is an example of displayed detail information indicated to the dealer or the like, 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0040]    A preferred embodiment of a parts management system of the present invention will now be described hereinafter with reference to the accompanying FIGS.  1  to  15 . FIG. 1 is a block diagram showing a schematic configuration of a parts management system, and FIG. 2 is a block diagram showing units with which a vehicle is equipped.  
         [0041]    As shown in FIG. 1, a service center  100  comprises a management computer  101  with a storage device storing data related to the vehicle and an user therewith, a terminal  102  connected to the management computer  101  and a modem  103  connected to the terminal  102 . The service center  100  also comprises a dealer database server  104  storing data related to dealers and so on, who are registered, and a cellular-phone transceiver unit  105  connected to the management computer  101 .  
         [0042]    A shop of the registered dealer or registered vehicle part shop  200  is provided with a management computer  201 , a terminal  202  connected the management computer  201 , and a modem  203  connected to the terminal  202 . FIG. 1 discloses only one shop of the registered dealer or one registered vehicle part shop  200 , but there can be provided a plurality of shops of the registered vehicle part shops  200  each having the same structure described above.  
         [0043]    As shown in FIGS. 1 and 2, a vehicle  300  is equipped with a cellular-phone transceiving unit  301  for communicating the vehicle  300  with the dealer&#39;s shop  200 , a cellular-phone antenna  302  connected to the cellular-phone transceiving unit  301 , a GPS (Global Positioning Systems) receiving circuit  303  for receiving GPS satellite radio waves, and a receiving antenna  304  connected to the GPS receiving circuit  303 . The vehicle  300  is also provided with a mileage counter  306  for counting the mileage of the vehicle  300 , a brake pad checking unit  307  for checking a brake pad of the vehicle  300 , thus detecting wear of the brake pad, an oil replacement detecting unit  308  for detecting a period for which engine oil is used, an audio controlling unit  309  for controlling sound outputted from an audio unit in the vehicle, and an in-vehicle speaker  310  connected to the audio controlling unit  309  and operative to output sound. In addition, the vehicle  300  is provided with a light valve detecting unit  311  for detecting periods for which light valves are used in the vehicle  300 , a display unit  312  with a touch panel for displaying information related to part replacement, and a control unit  314   
         [0044]    The cellular-phone transceiving unit  301 , the GPS receiving circuit  303 , the mileage counter  306 , the brake pad detecting unit  307 , the oil replacement detecting unit  308 , the audio controlling unit  309 , the light valve detecting unit  311  and the display unit  312  are connected to the control unit  314 , respectively, A signal outputted when detecting that the vehicle key is rotated to the accessory position is supplied to the control unit  314 . Hereinafter, this signal is referred to as an accessory source sense signal.  
         [0045]    As the brake pad checking unit  307 , for example, a sensor for measuring the width of the brake pad may be used, The oil replacement detecting unit  308  can be realized by, by way of example, a sensor for detecting the timing at which the oil cap is closed may be used, thus being able to determine the date and time to replace the oil according to the detected result.  
         [0046]    Next, the procedures for parts management by using the parts management system of the embodiment is explained hereinafter with reference to FIGS.  3  to  15 . FIG. 3 is a view showing flows and contents of items of information in replacing parts of the vehicle  300 . FIG. 4 is a flowchart showing a part of processing executed in the vehicle  300 . FIG. 5 is a flowchart showing a part of processing executed in the service center  100 . FIG. 6 is a flowchart showing a part of processing executed by the dealer or the like. FIG. 7 is a flowchart showing a part of the processing executed in the service center  100 , FIG. 8 is a flowchart showing a part of the processing executed in the vehicle  300 . FIG. 9 is a flowchart showing a part of the processing executed in the service center  100 . Further, FIG. 10 is a flowchart showing a part of the processing executed by the dealer or the like.  
         [0047]    [0047]FIG. 11 is an example of displayed information transferred from the vehicle  300  to the service center  100 . FIG. 12 is an example of displayed information transferred from the service center  100  to the dealer side. FIG. 13 is an example of displayed information transferred from the dealer side to the service center  100 . FIG. 14 is an example of displayed information transferred from the service center  100  to the vehicle  300 . FIG. 15 is an example of displayed detail information indicated to the dealer side  
         [0048]    The control unit  314 , which is equipped with the vehicle  300 , executes the processing shown in FIG. 4. At Step SI, the control unit  314  detects the start of the engine in the vehicle  300 , before shifting its processing to Step S 2 ,  
         [0049]    When the engine has been started, at Step S 2 , the control unit  314  collects check items of information related to parts replacement in the vehicle  300  from the mileage counter  306 , the brake pad checking unit  307 , the oil replacement detecting unit  308 , and the light valve detecting unit  311  That is, the check items of information related to the parts replacement include an item of information indicating the mileage of the vehicle  300 , which is obtained by the mileage counter  306 , and an item of information indicating the remaining amount of the brake pad, which is obtained by the brake pad checking unit  307 . The check items of information related to the parts replacement also include an item of information indicating the date and time of the last replacement of the oil, which is obtained by the oil replacement detecting unit  308 , and an item of information indicating the date and time of the last replacement of the light valve, which is obtained by the light valve detecting unit  311 . The position information indicating the present position at which the vehicle  300  exists is obtained by the GPS receiving circuit  303  according to the GPS satellite radio waves received through the receiving antenna  304 .  
         [0050]    The control unit  314  also collects the position information of the vehicle  300  from the GPS receiving circuit  303  in response to the engine start.  
         [0051]    Next, at Step S 3 , the control unit  314  transfers, to the service center  100 , the check items of information related to the parts replacement and the position information. The management computer  101  of the service center  100  receives the transferred information through the cellular-phone antenna  302  and the cellular-phone transceiving unit  301 . In this embodiment, whenever the engine is started, the check items of information related to the parts replacement and the position information are collected, thus being transferred to the management computer  101 .  
         [0052]    The check items of information transferred to the management computer  101  in the service center  100  and the foregoing position information are processed in accordance with the steps shown in FIG. 5. The management computer  101  executes these steps.  
         [0053]    At Step S 11  shown in FIG. 5, the management computer  101  determines whether or not the check items of information related to the parts replacement and the position information are received. And in cases it is determined that the check items of information related to the parts replacement and the position information have been received, the management computer  101  updates the data stored on the storage device, before shifting its processing to Step S 12 . At Step S 12 , the management computer  101  determines whether or not to replace at least one of parts in the vehicle  300  is required according to the check items of information related to the part replacement. At this Step S 12 , for example, the management computer  101  determines whether or not each part in the vehicle  300  exceeds over each predetermined usable limit previously set thereto according to the mileage or the last date and time at which the parts were replaced before, such information being included in the check items of information related to the parts replacement.  
         [0054]    [0054]FIG. 11 shows an example of information displayed on the terminal  102  according to the determination at Step S 12  On the terminal  102 , the name of the vehicle  300 , the date and time of detecting (collecting) the check items of information related to the parts replacement, a vehicle position as the position information, a user of the vehicle  300 , the address of the user to be contacted, names of the check items of information related to the parts replacement, stored data on the storage devices, which correspond to the check items of information related to the parts replacement, and determination results with respect to the checked items of information are displayed in a table format. That is, the names of the check items, the stored and the determination results are made to correspond to each other with respect to each check item.  
         [0055]    When the management computer  101  determines that it is not required to replace any parts in the vehicle  300  at Step S 12 , the management computer  101  shifts its processing to Step S 13 , at which the information indicating that any part is not required to be replaced is transferred to the vehicle  300 , through the cellular-phone transceiving circuit  105 . This information is referred to as “parts non-replacement information,” hereinafter. The processing at Step S 13  at which the transferred information is received and processed in the vehicle  300  will be described later (refer to FIG. 8).  
         [0056]    At Step S 12 , when the management computer  101  determines that it is required to replace at least one of parts of the vehicle  300 , the management computer  101  shifts its processing to Step S 14 . At Step S 14 , the management computer  101  searches the data in the dealer database server  104  to detect, on the basis of the position information of the vehicle  300 , at least one dealer&#39;s shop not only located within a predetermined radius from the current vehicle position but also registered in the data stored in dealer database server  104 .  
         [0057]    At Step S  15 , when detecting a certain shop  200  of a dealer, which satisfies locating conditions required for the shop, the management computer  101  transfers, to the dealer&#39;s shop, via the terminal  102 , the modem  103  and Internet, the vehicle information identifying the vehicle  300  and the parts information indicating at least one part of the vehicle  300 , which is required for replacement. FIG. 12 shows an example of the transferred information at Step S 15  displayed on the terminal  202 . On the terminal  202 , the names of parts required for replacement, the model numbers of parts required for replacement, and the manufacturer&#39;s names of parts required for replacement are displayed in a table format. That is, the names of parts, the model numbers of the parts, and the manufacturer&#39;s names thereof are made to correspond to each other with respect to each part.  
         [0058]    The processing carried out in the dealer&#39;s shop  200  by receiving the transferred information will be now described in conjunction with FIG. 6. The management computer  201  in the dealer&#39;s shop  200  executes the processing.  
         [0059]    At Step S 21  in FIG. 6, the management computer  201  determines whether or not both of the vehicle information and the part information have been received. When it is determined that both of the vehicle information and the part information have been received, the management computer  201  transfers the received vehicle information and the part information through the modem  203  and the terminal  202  to the management computer  201 , then shifting its processing to Step S 22 .  
         [0060]    At Step S 22 , the management computer  201  produces, on the basis of the vehicle information, the parts information and a predetermined database build therein, data including stock statuses of parts required for replacement, statuses of working areas, prices of parts required for replacement, labor charges, and the total amount of necessary charges. In this embodiment, for example, parts to be replaced are plural in number. The stock statuses of parts indicate whether replacement parts are in stock in the dealer&#39;s shop  200  or out of stock. The working areas shows places in which the replacement work is executed in the manufacturers. The labor charges indicate charges required for replacement work of the parts. The produced data are transferred to the service center  100  via the terminal  202 , the modem  203 , and Internet. The above data related to the parts required for replacement is referred to “parts replacement information” hereinafter.  
         [0061]    [0061]FIG. 13 shows an example of information displayed on the terminal  202  by the processing of the management computer  201 . On the terminal  202 , in addition to dears&#39; names, parts names, model numbers, manufacturers&#39; names, stock statuses, the status of working areas, parts prices, labor charges, the total amount of the parts prices and the labor charges, and others are displayed in a table format, That is, the parts names, the model numbers, the manufacturers&#39; names, the stock statuses,the status of working area, the parts prices, the labor charges, the total amount of the parts prices and the labor charges are made to correspond to each other with respect to both of each part required for replacement and each manufacturer. In this embodiment, the management computer  201  produces, on the basis of the predetermined database, the data including the stock statuses, the status of working area, the prices of the parts, the labor charges, the total amount of the prices and the labor charges, and others. It is possible for an operator to input the data including the stock statuses, the status of working area, the prices of the parts, the labor charge, the total amount of the prices and the labor charge, and others, to the management computer  201 .  
         [0062]    The data transferred from the management computer  201  in the dealer&#39;s shop  200  to the management computer  101  in the service center  100  are processed in accordance with the steps shown in FIG. 7. The management computer  101  executes processing written at those steps. At Step S 31 , the management computer  101  determines whether or not the data from the management computer  201  in the dealer&#39;shop  200  are received. And if determined that the data have been received (the determination is Yes at Step S 31 ), the management computer  101  shifts its processing to Step S 32 . The data above-mentioned from the management computer  201  can be received through the modem  103  and the terminal  102 .  
         [0063]    At Step S 32 , the management computer  101  transmits at least one of the parts non-replacement information and the parts replacement information.  
         [0064]    [0064]FIG. 8 shows the steps executed by the control unit  314  in the individual vehicles  300  that have received the parts replacement information. At Step S 41  in FIG. 8, the control unit  314  determines whether or not the parts non-replacement information has received, which has been transferred in response to processing done at Step S 13  in FIG. 5, if necessary. In cases it is determined that the parts non-replacement information has been received, that is, the determination at Step S 41  is Yes, the control unit  314  proceeds to the processing at Step S 42 , at which information indicating it is not required to replace any part of the vehicle  300  is displaced, on the display unit  312 . Then the control unit  314  terminates the processing. This parts non-replacement information can be received through the cellular-phone antenna  302  and the cellular-phone transceiving unit  301  under the control of the control unit  314 .  
         [0065]    In contrast, when the determination at Step S 41  is negative (No), the control unit  314  proceeds to the processing at Step S 43 , at which whether or not the parts replacement information has been received is determined. This parts replacement information has been transferred responsively to the processing done at Step S 32  in FIG. 7, if necessary In cases the determination at Step S 43  is No, the control unit  314  ends its processing. By contrast, in cases the determination at Step S 43  is Yes, that is, the parts replacement information has been received by the control unit  314 , the control unit  314  shifts its processing to Step S 44  to display the received parts replacement information on the display unit  312 , before proceeding to the processing at Step  345 . The parts replacement information can be received through the cellular-phone antenna  302  and the cellular-phone transceiving unit  301  under the control of the control unit  314 .  
         [0066]    [0066]FIG. 14 shows an example of the received information displayed on the display unit  312  of the vehicle  300 . In this example, the information displayed at each vehicle is grouped into each part that requires to be replaced. For example, as the item of the parts replacement information, on the display unit  312 , the name of a part required for replacement, the name of a part currently used, and the names of dealers that deal with the part required for replacement are displayed in a table format. The displayed item of the parts replacement information in the table format also includes the model numbers of the parts handled by the respective dealers, the manufacturers&#39; names of such parts, and the stock statuses of such parts. In addition, the displayed item of the parts replacement information further includes the statuses of working areas in the respective manufacturers, the prices of such parts, the labor charges for replacing the parts, and the total amount of the prices and the labor charges. That is, the dealers&#39; names, the model numbers, the manufacturers&#39; names, the stock statuses, the statuses of working areas, the prices, the labor charges, and the total amount are made to correspond to each other with respect to both of each part required for replacement and each dealer.  
         [0067]    With the screen of the display unit  312  observing, the user on the vehicle can select a desired replacement part, and/or refers to the statuses of working areas and the total amounts of the respective dealers with respect to the selected part, so that the user is able to choose a desired dealer and obtain other necessary information.  
         [0068]    When the user on the vehicle touches a key  401  indicating “NOT REPLACE” displayed on the display unit  312 , the touch panel of the display unit  312  sends an instruction corresponding to the touch of the key  401  to the control unit  314  so that the control unit  314  once ends the above displaying operation, but in cases where the engine is re-started, the control unit  314  repeatedly executes the same displaying operations.  
         [0069]    When the user on the vehicle touches a key  402  indicating “NEXT PARTS INFORMATION” displayed on the display unit  312 , the touch panel of the display unit  312  sends another instruction corresponding to the touch of the key  402  to the control unit  314  so that the control unit  314  displays one of the items of parts replacement information, which is related to another part required for replacement in the same table format shown in FIG. 14. If the user has an intention to replace another part that has yet to be displayed, not the currently displayed part, the user is able to repeat the selection using the key  402  until an item of parts information related to a desired one comes up on the screen.  
         [0070]    When the user on the vehicle touches one of the keys  404  indicating dealers&#39; names displayed on the display unit  312  to select it, the touch panel of the display unit  312  sends an instruction corresponding to the touch to the control unit  314 , so that the control unit  314  selects one of the dealers corresponding to the touched key  404 . When the user specifies one of the dealers by touching a key  405  indicating “DEALER&#39;S DETAIL INFORMATION” displayed on the display unit  312 , the touch panel of the display unit  312  sends an instruction corresponding to the touch to the control unit  314 , so that the control unit  314  displays a dealer&#39;s detail image shown in FIG. 15 on the display unit  312 , In an example of the displayed image shown in FIG. 15, the name of a certain specified dealer and the address thereof are displayed in a table format. In addition, in such image, the names of the parts that the user can order, the model numbers of such parts, the manufacturers&#39; name of such parts, information indicating whether or not each listed part is identified with the part presently used, the stock statuses of such parts, the statuses of working areas, the prices, the labor charges, and the total amount are displayed correspondingly to each other with respect to both of each name of each part that the user can purchase.  
         [0071]    In the image shown in FIG. 15, keys  407  and  408  are displayed. The key  407  indicates “RETURN” for sending to the control unit  314  an instruction to return the displayed image to the image shown in FIG. 14, while the key  408  indicates “ORDER” for sending to the control unit  314  an instruction to order a desired part required for replacement to the selected dealer. When deciding to order a certain part of the presently selected dealer, the user on the vehicle touches the key  408  indicating “ORDERS” to select it. The order processing is partly included in the processing steps described hereinafter. As shown in FIG. 15, the dealer&#39;s detail image includes a field  409  in which displayed are incentive information given to the user who orders through a selected dealer and some advertisements.  
         [0072]    The present embodiment allows dealer&#39;s information including incentive information and advertisements to be offered to the user on the vehicle. The present embodiment also permits the dealer to have introductions of users who desire replacement parts, without particular sales activities, and to obtain users even from areas in which the dealer&#39;s shop is not located. For making the dealers utilize this system for sales, the service center  100  is entitled to have payment, for example, every month from the dealers and/or parts sale networks registered in the service center  100 . The fee to be paid to the service center  100  can be decided such that, by way of example, the fee is composed of a basic registration fee to be regularly paid, for example, every month and an irregular fee charged when advertisements and/or incentive information for sales are carried through the present system.  
         [0073]    After Step S 45  in FIG. 8, the control unit  314  determines whether or not the instruction that no parts replacement is necessary has been received, in other words, the user has selected the key  401 . In cases the determination is Yes at Step S 45 , the control unit  314  ends the processing, while in cases the determination is No, the processing is shifted to Step S 46 .  
         [0074]    At Step S 46 , the control unit  314  determines whether or not the instruction to order a part required for replacement has been received, in other words, the user has selected the key  408 . In cases the determination is No at Step S 46 , the control unit  314  ends the processing, while the determination is Yes, the processing is shifted to Step S 47 . At Step S 47 , the control unit  314  selects a specified dealer as the dealer to whom order information (order data) is transferred The user touches one of the keys  404  indicating the dealers&#39; names, so that one of the dealers corresponding to the touched key  404  is specified.  
         [0075]    Next, at Step S 48 , the control unit  314  transfers to the service center  100  the order data including the ordered part and the selected dealer&#39;s name parts by parts through the cellular-phone transceiver circuit  301  and the cellular-phone antenna  302 .  
         [0076]    [0076]FIG. 9 shows the steps executed in the service center  100  that receives the order data transferred from the control unit  314  at Step S 48 . At Step S 51  in FIG. 9, the management computer  101  determines whether the order data transferred from the control unit  314  at Step S 48  have been received or not. The order data can be received, if transferred, through the modem  103  and the terminal  102  into the management computer  101 . Next, at Step S 52 , the management computer  101  transfers, to the specified dealer and others, information including the vehicle information identifying a certain vehicle, replaced parts information identifying the part to be replaced, and the address to be contacted to the vehicle,  
         [0077]    As shown in FIG. 10, the dealer receives the information transferred from the management computer at Step S 52  shown in FIG. 9, thus being able to contact with the user of the vehicle by using, for example, the cellular-phone unit (the cellular-phone transceiver circuit and the cellular-phone antenna) or other telephones, according to the received information, so that the working date and time and some other agreements for replacing the current part by new one can be decided (Step S 61 ).  
         [0078]    In the present embodiment, whenever the engine is started, the check items of information related to the part replacement is collected so as to be transferred to the management computer  101 , in addition to the position information. The present invention, however, is not limited to such an operation. During the operation of the engine, these check items of information and the position information may be transferred to the management computer whenever a certain period of time (for example, two hours) elapses.  
         [0079]    In the foregoing embodiment, when determined that the user selects the key  408  at Step S 46 , the control unit  314  transfers the order data including the ordered part and the selected dealer&#39;s name through the cellular-phone transceiver circuit  301  and the cellular-phone antenna  302  to the service center  100  (Step S 48 ). The present invention, however, is not limited to this processing, At the time when the user indicates an intention to order parts, for example, at the time when the management computer  101  recognizes the select of the key  408  indicating “ORDER,” the management computer may control the communications between a person on the vehicle and an operator in the service center  100 , so that the person is able to converse with the operator through the cellular-phone unit (i.e., through the cellular-phone transceiver circuit  301  and the cellar-phone antenna  302 ). FIG. 3 shows flows and contents of items of information communicated between the person on the vehicle and the operator in the service center. When the user makes cellular-phone conversations to the operator, it is possible to cope with cases required for complicated work processes, for example, such a case of using different dealers according to the type of parts. After the order via the cellular-phone conversations, the operator confirms to the user the content of the parts order and the working date and time for replacing the parts. Therefore, even if complicated work processes are required, the parts can be ordered to the dealer and the work for the replacement can be reserved to the dealer in a steady manner. If necessary, it is further possible to guide the user to a dealer or a network by operator&#39;s voice massages.  
         [0080]    In the above embodiment, on the basis of the position information of the vehicle  300 , the management computer  101  selects at least one dealer whose shop is located within a predetermined radius to the vehicle position and registered in the dealer database server  104  (Step S  14 ). However, the user does not always want to replace parts soon, and in some cases, the user may want to replace parts required for replacement after the user returns home. The management computer, therefore, may select at least one dealer whose shop is close to the user&#39;s home, regardless of the vehicle position, so that it is possible to select at least one dealer on the basis of the database including personal information of the registered dealers in the dealer database server  104 .  
         [0081]    The parts management system stated above is able to use a specified program to execute the above processing.  
         [0082]    In addition, the system according to the present invention is not restricted to application to the vehicle employed as the mobile unit, but the system may be applied to other mobile units, such as a small craft.  
         [0083]    While there has been described what is at present considered to be the preferred embodiments and modifications of the present invention, it will be understood that various modifications which are not described yet may be made therein, and it is intended to cover in the appended claims all such modifications as fall within the true spirit and scope of the invention,  
         [0084]    The entire disclosure of Japanese Patent Application No.  2000-382136  filed on Dec. 15, 2000 including the specification, claims, drawings and summary is incorporated herein by reference in its entirety.