JP2007041857A - Vehicle information management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein a salesperson cannot assure the customer of a vehicle delivery date because of inaccessible status until the delivery of a produced vehicle to the customer, and especially, inaccessible current status in a coachbuilding maker as for the delivery of a commercial vehicle to the customer through a coachbuilding process in the coachbuilding maker. <P>SOLUTION: A radio tag for spontaneously transmitting ID information is mounted on each vehicle shipped from an own company. Master units installed in a coachbuilding maker receive the ID information transmitted from the radio tag and send it and also ID information about the units and information on the reception time to a data server. The data server identifies which vehicle is in which position and in which status by the radio tag ID information, master unit ID information and reception time information sent from the master units. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle information management system that collects state information of each vehicle until the produced vehicle is delivered to a customer. In particular, we collect vehicle status information from commercial vehicles such as trucks and buses shipped from chassis manufacturers until they are delivered to the customer after mounting, and in what position, what process, and what process The present invention relates to an information system that grasps status information about a certain item and provides it to a necessary person.

  In the case of a normal passenger car, it is generally a completed vehicle that can be delivered to the customer when assembly is completed at the company's own factory. Therefore, which vehicle is in which state and how much to the customer about the vehicles at the company and the dealer (sales company). A vehicle status information management system that grasps information on whether delivery can be made in a period is constructed as an information system connecting the company and its affiliated dealers, and is used by each company.

  However, when large commercial vehicles such as trucks and buses are assembled in principle by chassis manufacturers, they are sent to the bodybuilders to carry out bodywork based on specifications from customers, and then complete as trucks and buses. Follow the process of being delivered to customers through. In the state shipped from the chassis manufacturer, it is still in a semi-finished state, and various bodywork processes are necessary. These bodywork must be carried out by the bodybuilder in charge of each necessary bodywork process.

  Chassis manufacturers know the status of vehicles in their factories, especially for products that flow on the line in real time. In addition, even if the vehicle has been completed, even if it is parked in its own temporary parking lot (motor pool), it is understood that it is temporarily placed in that temporary parking lot using an in-house management system. Yes.

  Patent Document 1 proposes a technique for collecting the position information of a vehicle transferred from a manufacturer, a transporter, and a sales company to grasp the status of the passenger car.

In the technique described in Patent Document 1, a wireless tag to which identification information is given is attached to each vehicle, and the identification information from the wireless tag is read by a reader device provided at a necessary location to establish a communication network. To the center device that manages the status information of the vehicle. The center device accumulates information notified from each reader device in a database, and makes it possible to grasp which vehicle is in which position based on the accumulated information.
JP 2004-322199 A

  In commercial vehicles such as trucks and buses, there is usually no capital relationship between the chassis manufacturer and the bodybuilder, and the bodybuilder orders the bodywork they are good at for any chassis manufacturer's vehicle. The bodywork process is executed according to

  For this reason, the chassis maker can grasp that the assembled vehicle has been shipped from the company, but the present situation is that the chassis maker cannot grasp when it is received by the bodybuilder and in what state in the bodybuilder. Moreover, the mounting process may be a short time, but it may take half a year. During this period, the chassis manufacturer cannot grasp the state of the truck produced by the company. Of course, if information is provided by the bodybuilder, it is possible to incorporate that information into the company's management system. However, each bodybuilder, which is not a capital relationship and is independent of the chassis manufacturer, has its own management. Since the system is constructed, it cannot be expected that the same system as the information system of the chassis manufacturer is adopted and provided as information corresponding to the chassis manufacturer. Further, in the current situation where vehicle information management systems are different for each chassis maker, it is substantially difficult to provide information corresponding to each chassis maker from the bodybuilder in real time. Also, even if the chassis maker provides information on the bodywork status in document form from the bodybuilder, it cannot be used effectively even if it is entered into the company's own management system. However, there is a problem that both the chassis maker and the body builder are burdened with the labor of conversion work for mutual provision of the information and input to the management system.

  The present invention solves such a problem. A vehicle information management system that collects only the status information of the vehicle of the company and grasps the status of the vehicle without burdening the bodybuilder. The purpose is to provide. Moreover, it aims at providing the vehicle information management system which can construct | assemble a system at low cost. Another object of the present invention is to provide a vehicle information management system that facilitates the collection of vehicle status information and system construction by using a wireless tag that can withstand long-term use within the limits of the Radio Law. To do.

  When shipped (shipped) from a chassis manufacturer, a wireless tag that intermittently transmits individual ID information as a wireless signal is mounted on the vehicle as an in-vehicle device, and the ID information and vehicle identification information are managed for vehicle status information The data server is associated with the database. In addition, a base unit that can receive ID information from an in-vehicle wireless tag even if it is a little away from the vehicle is installed at least at a position where the state of entering and leaving the bodybuilder can be grasped, and the wireless tag ID received by the base unit , Information on the parent device ID and the reception time is transmitted to the data server. The master unit includes a wireless terminal, and directly transmits information to be transmitted to the data server via the public mobile wireless network without going through the bodybuilder. In the data server, based on the information on the position where the master unit is installed, what is the status for each vehicle based on the wireless tag ID, master unit ID, and reception time information transmitted from the master unit And provide status information in response to a situation inquiry request from a person who needs the status information. When the same RFID tag ID is received multiple times from the master unit, unnecessary data is deleted based on the location of the master unit, the flow of the vehicle in the bodybuilder, etc. Only data indicating the status of the vehicle is retained.

  That is, the present invention includes a wireless tag that is mounted on a vehicle and intermittently transmits ID information as a wireless signal, a receiving device that receives ID information of the wireless tag, and ID information of the wireless tag received by the receiving device. Based on a plurality of master units including a transmission device that transmits ID information of the host device and reception time information, and ID information of the wireless tag transmitted from the master unit, ID information of the master unit, and reception time information And a center device that manages status information for each vehicle, wherein the center device associates the vehicle with the ID information of the wireless tag, and provides information on the installation position of the master unit. The database stores the status information for each vehicle based on the RFID tag ID information, the master unit ID information, and the reception time information from the master unit. Wherein the said base unit, characterized in that provided on at least entry and leaving the gate of the bodywork plant other than its own.

  With this configuration, the chassis manufacturer can grasp the status of the vehicle shipped from the company.

  The wireless tag includes a battery in its own device, and has a transmission function capable of transmitting an electric field intensity that can be identified by receiving radio waves from the wireless tag at a distance of at least several meters. Can do.

  Further, the master unit includes a PHS terminal as means for connecting to a public wireless communication network as the transmission device, and the PHS terminal receives ID information received from the radio tag, ID information of the master unit, and reception time information. The data can be transmitted to the data server via a public wireless communication network.

  The database deletes unnecessary duplicated data when the same wireless tag ID information is transmitted a plurality of times from the same base unit, ID information of one wireless tag, ID information of the base unit, time information It is preferable to include means for storing only the vehicle status information based on the combination.

  Since the status and position information of each vehicle shipped by the company can be collected, the status of the vehicle shipped by the company cannot be grasped, and it is possible to reduce the situation where the customer's request cannot be met. In particular, it is possible to obtain information only about the company's vehicles without imposing any systematic burden on the bodybuilder. It is possible to grasp the status of inventory that was shipped from the company but before delivery. Since a wireless tag that actively transmits ID information intermittently is used, it can be applied to a vehicle that goes through a long-term disguise process, can be used for a long period of time, and can obtain vehicle status information at a low cost. Can be built.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the concept of a vehicle information management system according to an embodiment of the present invention. In this embodiment, the trucks are shipped from the chassis manufacturer and transported, followed by the bodyworking process at the bodybuilder, further transported and delivered to the chassis manufacturer sales company, and delivered to the customer. It will pass.

  The vehicle information management system according to the present embodiment includes a wireless tag 1 that is mounted on a vehicle and intermittently transmits ID information as a wireless signal, a receiving device that receives ID information of the wireless tag 1, and a wireless tag received by the receiving device. A plurality of master units 2 each having a transmission device that transmits ID information of the host device, ID information of the host device, and reception time information, ID information of a wireless tag transmitted from the master unit 2, ID information of the master unit, And a data server 3 that manages status information for each vehicle based on the reception time information. The data server 3 associates each vehicle with the ID information of the wireless tag 1, and information on the installation position of the parent device 2. The database stores the status information for each vehicle based on the ID information of the wireless tag from the master unit, the ID information of the master unit, and the reception time information from the master unit. The Can provide Tasu information to the terminal 4 for status inquiry.

  Persons authorized to access the vehicle status information in the vehicle information management system of the present embodiment can access the vehicle status information from the terminal 4, respectively.

  The base unit 2 is provided at the entrance gate of the truck chassis manufacturer, the entrance gate of the bodybuilder, the entrance and exit of the bodywork process, the exit gate of the bodybuilder, and the entrance gate of the sales company. With this master unit arrangement, when each master unit receives the ID information from the wireless tag, the status of chassis manufacturer entry, bodybuilder importer, bodybuilder, bodywork completion, bodybuilder starter, distributor import In this state, the chassis manufacturer goes out and is transported to the bodybuilder, and the bodybuilder goes out and is transported to the sales company.

  In addition, if the layout of the main body of the bodybuilder is at least at a position where the bodybuilder can carry in and ship, status information that the bodywork has started, status that the bodywork has been completed Information can be collected, and the minimum status information that the chassis manufacturer wants to grasp can be collected, so at least the main machine will be installed at the entrance gate and exit gate of the bodybuilder. As the number of locations of the master unit increases, the status information that can be collected can be increased, and the vehicle status can be grasped more accurately.

  FIG. 2 shows the configuration of the wireless tag 1.

  The wireless tag includes a battery, a storage device 11 that stores a terminal ID, a transmission device 12, an antenna 13, and a battery 14. For example, the output of the transmission device 12 can obtain an electric field strength of 500 μV at a distance of 3 m from the antenna, and line-of-sight communication of tens of meters is possible. The wireless tag has a built-in battery and can be used for about one year. Further, the entire wireless tag is housed in a heat-resistant case in order to improve heat resistance, and can be used even at an external temperature of about 85 ° C.

  FIG. 3 shows the configuration of base unit 2.

  The base unit 2 includes an antenna 21 that receives a wireless signal from the wireless tag 1, a receiving device 22, a storage device 23 that stores ID information of the own device, a clock 24 that outputs time information of the reception time, and a received wireless tag A transmission information creation device 25 that generates transmission information including ID information, ID information of the parent device, and reception time information, and a transmission device 26 that transmits the created transmission information to a data server via a public wireless line are provided. .

  By using a PHS network as a public wireless line to which the transmission device 26 is connected, the transmission device 26 can use a PHS terminal, and the storage device 23, the clock 24, and the transmission information creation device 25 are also provided in the PHS terminal. A terminal ID storage function, a clock function, and a data processing function can be used. The receiving device 22 includes a wireless circuit that receives the frequency transmitted by the wireless tag 1 because the wireless frequency from the wireless tag 1 is a frequency of a separate standard. The transmission interval of the reception information from the parent device 2 to the data server 3 is set to one hour interval, and data transmission to the data server is intermittently performed. For the same signal received from the wireless tag 1 during this one hour, the same signal received continuously is collected, and the signal at the time of the last reception is made valid and sent together every hour. .

  This base unit is installed in a body builder that is not in a capital relationship with the chassis manufacturer that operates this vehicle information management system. However, the power source of the body manufacturer can also be used, and a PHS terminal can be used. Since the power consumption is small so that it can be used as a transmission device, it can be driven by a battery.

  In addition, a plurality of master units are installed in one predetermined area, one master unit is a master master unit connected to the data server, another master unit is a slave master unit, and the master master unit is a slave master unit. The information can be transmitted to the data server including the information from. This is because, for example, the signal reach distance of the wireless tag is tens of meters, so that, for example, when the width of one gate through which a vehicle passes due to the bodywork exceeds ten meters, There may be cases where the signal from the wireless tag of the vehicle passing by the master unit cannot be received. If multiple master units are arranged in the same area, the reception area can be expanded and the vehicle equipped with the wireless tag is passed. This is because it is possible to eliminate the possibility of the occurrence of being unable to catch. Also, depending on the bodybuilder, it is possible to grasp the difference in the status of the vehicle depending on which parent device has received the same part, because the position passing through the process differs.

  In this case, as the transmission function of the slave base unit, the received ID information of the wireless tag, the ID information of the own slave base unit, and the reception time information are transmitted to the master base unit, and the master base unit receives the received slave base unit. In addition to the above information, information including the own ID information is generated and sent to the data server. The frequency of the wireless tag can be used as the transmission frequency of the slave base unit. In this case, the transmission device is the same as the wireless tag transmission device in the configuration of the parent device. Also, using another frequency, for example, using the transmission / reception function of the PHS terminal of the master base unit, the RFID tag ID information, the slave base unit ID information, and the reception time information separately received from the slave base unit are sent to the master base unit. It can also be sent.

  FIG. 4 shows a configuration example of the data server 3.

  The data server 3 includes a parent device information master 31 for storing parent device information, a vehicle information master 32 for storing vehicle information and wireless tag information, a wireless tag ID transmitted from the PHS public communication network, and a parent device ID. , A data reception processing unit 33 that performs reception processing of data of reception time information, a positioning information data storage unit 34 that stores data received by the data reception processing unit 33, a parent device information master 31, a vehicle information master 32, and positioning information Analyzing and examining information in the data storage means 34, deleting unnecessary information, generating and updating vehicle status information, and status information analyzed and updated by the analysis and examination means 35 Status information storage means 36 for storing in a form that can be provided by an inquiry request, and analysis / scrutiny means 35 store log information of analysis / scrutiny between the main unit and the reception time It includes scrutiny log report possible means 37 that.

  The master unit information master 31 stores information such as the body builder in which the master unit is installed, its installation location, and the correspondence between the installation location and the body installation process. In the vehicle information master 32, data associated with the vehicle type, vehicle number information, and ID information of the wireless tag, and data released from the association by the collected wireless tag are registered. The ID information of the wireless tag managed by this system is unique in this system and is collectively managed. If the ID of the wireless tag is created with 24 bits, the number that can be used is 16777216, and if reuse is considered, there is no possibility that the same ID is used at the same time.

  The data in the status information storage means 36 and the scrutinization log report storage means 37 are provided in a form in which such information can be provided for each vehicle by accessing from the terminal 4 requesting the inquiry of the vehicle status information and providing the log report. Stores information.

  As a pre-setting process before collecting status information in the vehicle information master 32 of the data server 3, the vehicle is associated (associated) with the RFID tag ID information to be mounted. Further, the base unit information master 31 performs processing for associating the ID information of the base unit 2 with the installation location of the base unit and the status of the vehicle, and defining the acquisition order of the status information. For example, the association between the vehicle and the RFID tag ID information is to register the correspondence between the vehicle model, the vehicle number, and the RFID tag ID information in the vehicle information master 32 when the RFID tag is mounted on the vehicle. This process is performed when the vehicle is completed at the chassis factory and the wireless tag is mounted on the vehicle. In addition, the association between the parent machine ID information in the parent machine information master 31 and the installation location of the parent machine and the vehicle status is set before the operation of the vehicle information management system is started, and is installed at the entrance gate of the factory. The ID information of the main machine installed at each location of the main machine, bodywork manufacturer, and the main machine installed at the introductory gate of the sales company is registered. It is set to any of the following states: loading into the vehicle, starting the bodywork process, completion of the bodywork process, shipping from the bodybuilder, shipping to the sales company, and delivery to the sales company. It should be noted that such a process is performed every time a new master unit is added after the vehicle information management system starts operating. The association is also canceled when the wireless tag is collected.

  The status acquisition order definition process defines in advance which of the data sent by the master unit indicates the actual status from the relationship between the location of the master unit and the order of vehicle movement. For example, for the data transmitted from the main unit installed in the bodybuilder, the data of the post-process that has been transmitted first in the case where the data of the pre-process is transmitted after the data of the post-process is transmitted It is intended to be invalidated. This process is set according to the process layout in the bodybuilder. This process will be described in detail separately.

  Next, the process of collecting vehicle status information in the present embodiment will be described with reference to the flowchart of FIG.

  It should be noted that the ID information of the master unit, its installation location, the correspondence between the processes, the status acquisition order for each location of the master unit are defined, and the ID information of the in-vehicle wireless tag managed by this system Is registered in the database.

  The relationship between the RFID tag ID information mounted on the vehicle, the vehicle model, and the vehicle number is associated (linked) and registered in the database (step S1). The association between the vehicle and the wireless tag ID information is based on the acquisition of the transportation number from the land transportation office, the bar code in which the vehicle type vehicle number identified by the number is recorded on the transportation slip, and the wireless tag sticker sticker The wireless tag ID information recorded in the barcode is detected and registered in the database. Thereby, the radio tag ID information managed in the database is associated with each vehicle.

  Next, a wireless tag is mounted on a vehicle that has been assembled and can run (step 2). This wireless tag will be mounted in the truck cabin. In the bodywork process at the bodybuilder, painting and other processes are expected, and even if it is attached to the chassis outer plate, it will interfere with the work, and there is a risk of damage or damage due to heating. Attach it to a windshield or seat belt where it will not interfere with driving operations during transportation. In such a place, there are few obstacles for radio signal reception, and the degree of decrease in electric field strength with respect to the master unit is also small.

The truck to which the wireless tag is attached is transported to a bodybuilder, for example, through a doorway gate of a chassis manufacturer's factory. At this time, the base unit 2 ₁ provided going out gate receives the ID information from the RFID tag, to confirm the received contents, after deleting the duplicated data, a radio tag ID information, the parent machine ID information, The reception time is transmitted to the data server 3 via the public communication network 5 (step 3). In this step, deletion of duplicate data means that when the transmission interval is 1 hour, the signal received by the wireless tag intermittently within that time is the first time information received. Alternatively, it means sending the information of the time of the last reception, and deleting the other information. Thereby, since data from the same wireless tag is continuously sent to the data server as one data, the amount of data exchanged between the parent device and the data server can be reduced.

Upon receiving the information from the base unit 2 ₁ plant going out the gate in this Shashimeka, database vehicle (vehicle type, vehicle number) corresponding to the radio tag ID information status factories going out of, and in the bodywork factory transport (Step 4 ).

When the vehicle is transported and the base unit 2 ₂ provided at the entrance gate of the bodybuilder receives a wireless signal from the wireless tag 1, the ID information of the wireless tag 1, the ID information of the base unit 2 ₂ and the reception time Data is generated and transmitted to the data server 3 (step 5). Data server 3 receives the data from the base unit 2 _2, the status of the vehicle and carried to the bodywork factory (step 6).

Then the vehicle is moving at a bodywork in manufacturer, base unit 2 ₃ receives the radio signals of the radio tag 1 in the main terminal 2 ₃ provided at the entrance of the bodywork step, the radio tag ID information, the base unit 2 ₃ ID information and reception time information are transmitted to the data server 3 (step 7). Data server 3 receives the data from the base unit 2 _3, the status of the vehicle and the bodywork process starts started (step 8).

When the parent machine 2 ₄ installed at the exit of the bodywork process receives the radio signal of the wireless tag 1 base unit 2 _4, the radio tag ID information, the base unit 2 ₄ ID information, the data server 3 information reception time (Step 9). Data server 3 receives the data from the base unit 2 _4, the status of the vehicle and the bodywork process completed (step 10).

When the base unit ₂₅ provided at the entrance gate of the bodybuilder receives the radio signal of the wireless tag 1, the base unit ₂₅ receives the ID information of the wireless tag, the ID information of the base unit ₂₅ , and the reception time. Information is transmitted to the data server 3 (step 11). When the data server 3 receives the data from the base unit ₂₅ , the data server 3 sets the status of the vehicle as being shipped or transported by the bodybuilder (step 12).

  Note that the actual status may not correspond even if data from the master unit arrives depending on the vehicle movement line in the bodybuilder and the location of the master unit. Even if data from the parent device arrives, adjustment is performed and the data is ignored as it does not indicate the actual status. This process will be described in detail later.

Further, when the base unit ₂₆ provided at the introductory gate of the sales company receives the wireless signal of the wireless tag 1, the base unit ₂₆ stores the ID information of the wireless tag, the ID information of the base unit ₂₆ , and the reception time data in the data server. 3 (step 13). When the data server 3 receives the data from the base unit ₂₆ , the data server 3 sets the vehicle status to the sales company (step 14).

  The sales company delivers the delivered truck to the customer, removes the wireless tag, collects it, and sends it to the department handling the wireless tag of the chassis manufacturer (step 15). The management department reads the barcode of the wireless tag sent from each sales company, releases the association with the vehicle (vehicle type, vehicle number) and registers it in the database. (Step 16). As a result, the wireless tag can be reused. The wireless tag is used again after changing the battery according to the usage time of the battery.

  Note that the process of releasing the association between the wireless tag ID and the vehicle may be performed by using a terminal when the terminal is collected from the vehicle by a terminal of a sales company.

  The sales representative of the sales company can grasp the current location and status of the vehicle by accessing the database of the data server from the terminal and entering the model and number of the vehicle. Can answer inquiries from customers.

  Next, with reference to FIG. 6 to FIG. 9, a description will be given of a process for determining the state of the vehicle based on the location of the master unit performed in the data server and the signal of the wireless tag received there. To do.

  FIG. 6 shows a correspondence relationship between the master unit arranged in the bodybuilder and the flow line of the truck movement path. FIG. 7 shows an example of a table showing process order definitions set in the data server corresponding to the parent machine shown in FIG. FIG. 8 is a diagram showing the relationship between the flow line shown in FIG. 6, the signal from the parent machine, and the processing of the data server. FIG. 9 shows the analysis and analysis in the case of the factory arrangement and the parent machine arrangement of FIG. It is a flowchart which shows the example of the determination procedure of the status of the vehicle which a close examination means performs.

  FIG. 6 shows an example of factory arrangement and parent machine arrangement in a bodybuilder, and A to C show the parent machine. A, B, and C are master master units, A ′, B ′, C ′, and C ″ indicate slave master units. A is provided at a loading position of the bodybuilder, and B is a body process. It is provided at the start position, and C is provided in the inspection process.

  FIG. 7 shows the process order definition set in the data server. The base unit A has the order “1”, the status name “import”, and the priority order “destination”. Master units B and B ′ have the order “2”, status name “start”, master units C, C ′ and C ″ have the order “3”, status name “inspection”, the priority is “first”, and the master unit A. 'Is defined as the order "2", the status name "completed", and the priority is "after".

  Next, an example of what the data server performs with respect to the flow of the vehicle shown in FIG. 6 and the signal from the parent device will be described with reference to FIG.

  The flow line shown by (1) of FIG. 6 has shown the vehicle carrying-in process, and shows the state which the vehicle was carried in from the outside of the bodybuilder and stopped in the factory. In the example of the movement flow line of the vehicle (1), a state is shown in which the vehicle first stops near the master base unit A after passing through the vicinity of the slave base unit A ′. At this time, information from the slave base unit A ′ first arrives at the data server (in this case, via the master base unit A), and then information from the master base unit A arrives at the data server. In this case, as shown in FIG. 8, according to the process order definition, the data server invalidates the data from the parent machine A ′, validates the data from the parent machine A, and sets the vehicle state to “import”. .

  The flow line shown in (2) of FIG. 6 is a case where a vehicle in the vicinity of the parent device A has moved to the in-house pool 1, and in this case, processing for data from the parent device is particularly necessary. Absent. The flow line shown in FIG. 6 (3) passes from the in-house pool 1 through the vicinity of the master unit A, passes through the vicinity of the master unit C ″, passes through the vicinity of the master unit B ′, and enters the bodywork process. At this time, the data server invalidates the data from the master units A and C ″, validates the data from the master unit B ′, and sets the vehicle state to “start”. The flow line in FIG. 6 (4) shows an example in which the bodywork process is completed and another bodywork process is performed at another location outside the company. Since the data passes through the vicinity of ′, the data from the parent devices A and A ′ arrive at the data server, but from the order definition, the data from the parent devices A and A ′ are invalidated. In this case, the construction process is still underway. The flow line in FIG. 6 (5) shows a state when the vehicle that has once gone outside the company in (4) returns and moves to the in-house pool 2. In the case of this flow line (5), since it passes through the vicinity of the parent device A ′, the data from the parent device A ′ arrives at the data server. However, since it is the data after (3) and (4), the data server simply carries it in after going out of the office after the installation work, and invalidates the data of the parent machine A ′.

  Next, the flow line in FIG. 6 (6) shows the time when the inspection process is started from the in-house pool 2, and the data from the master unit C ″ arrives at the data server. Based on the data from C ″, the status is set to “inspection” from the process sequence definition. The flow line of (7) in FIG. 6 is an example of moving from the inspection process to the in-house pool 3, and at this time, data arrives in the order from the master units C ″, C ′, C. Since the status is “inspection”, the data from the parent devices C ″, C ′, C are invalidated and the status remains “inspection”. The flow line of (8) in FIG. 6 is the case of moving from the in-house pool 3 to the outside pool. At this time, it passes near the main machines C ″, C ′, C in the inspection process, and further near the entrance gate. It passes near the master A ′ and moves to the outside pool. Radio tag data arrives from the masters C ″, C ′, C, and A ′. Since the latest data is given priority, the data from the parent device A ′ is made valid, the data from the parent devices C ″, C ′, C are made invalid, and the status is set to “completed”.

  The flow line in (9) of FIG. 6 is an example of entering the factory, passing through the vicinity of the parent device A ′, and leaving the gate as it is. In this case, the parent device A ′ has the “rear” priority. Therefore, when data comes twice from the base unit A ′, it indicates that the later data is valid. However, from the definition of the process order definition table, since “carrying in”, “starting”, and “inspection” have not passed, the status of “completed” is not determined based on the data from the main unit A ′.

  FIG. 9 is a flowchart for determining the status based on the process sequence definition table of FIG. 7 in the arrangement of the master unit of FIG. That is, as described with reference to FIGS. 6 to 8, the data is valid in the order of the parent devices A, A ′, the parent devices B, B ′, the parent devices C, C ′, C ″, and the parent device A ′. The vehicle status is determined.

  The present invention can construct a system that can grasp the status of a vehicle outside the company without spending a great deal of money, and the work in process before delivery after leaving the company that could not be grasped so far It can be easily grasped.

1 is an overall configuration diagram of a vehicle information management system of the present invention. The figure which shows the structure of a wireless tag. The figure which shows the structure of a main | base station. The figure which shows the structure of a data server. The flowchart which shows the whole operation | movement. The figure which shows arrangement | positioning of the main | base station in a bodybuilder, and a motion of a vehicle. The figure which shows the example of a process order definition table. The figure which shows the example of the flow in the vehicle of FIG. 6, and the determination in a data server. The flowchart which shows the example of a status determination operation | movement using the process sequence definition table in a data server.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wireless tag 2 Base machine 3 Data server 4 Client terminal 5 Public communication network 11 ID storage device 12 Transmission device 13 Antenna 14 Battery 21 Antenna 22 Reception device 23 ID storage device 24 Clock 25 Transmission information creation device 26 Transmission device 31 Base device information Master 32 Vehicle information master 33 Data reception processing unit 34 Positioning information data storage means 35 Analysis / scrutiny means 36 Status information storage means 37 Scrutiny log report enable means A, B, C Master unit (master master unit)
A ', B', C ', C "Master unit (slave master unit)

Claims (4)

A wireless tag that is mounted on a vehicle and intermittently transmits ID information as a wireless signal;
A plurality of master units each including a receiving device that receives ID information of the wireless tag, and a transmission device that transmits the ID information of the wireless tag received by the receiving device, the ID information of the own device, and the information of the reception time; ,
A vehicle information management system comprising: a center device that manages status information for each vehicle based on ID information of the wireless tag transmitted from the master unit, ID information of the master unit, and reception time information;
The center device includes a database in which vehicle and ID information of the wireless tag are associated with each other, and information on an installation position of the parent device is recorded.
The database includes means for storing status information for each vehicle based on ID information of the wireless tag from the master unit, ID information of the master unit, and information on the reception time,
The vehicle information management system, wherein the master unit is provided at least at a loading / unloading gate of a bodywork factory other than its own. 2. The wireless tag includes a battery in its own device, and has a transmission function capable of transmitting an electric field intensity that can be identified by receiving radio waves from the wireless tag at a distance of at least several meters by the base unit. The vehicle information management system described. The master unit includes a PHS terminal as means for connecting to a public wireless communication network as the transmission device,
3. The vehicle information management system according to claim 1, wherein the PHS terminal transmits the ID information received from the wireless tag, the ID information of the parent device, and the reception time information to the data server via a public wireless communication network.   The database deletes unnecessary duplicated data when the same wireless tag ID information is transmitted a plurality of times from the same base unit, ID information of one wireless tag, ID information of the base unit, time information The vehicle information management system according to any one of claims 1 to 3, further comprising means for storing only vehicle status information based on the combination.

Images