JP5120831B2 - In-vehicle information collection system - Google Patents

Description

  The present invention relates to an in-vehicle information collection system which is mounted on a business vehicle such as a taxi and used for collecting and managing information generated on the business vehicle.

  Conventionally, in business vehicles such as taxis, business information generated for each business by taxi meter during business, such as boarding time, boarding location information, getting-off time, boarding location information, boarding distance The information composed of the fare is stored in a memory device (for example, a memory card) provided on the vehicle, and the information stored in the memory device is read out at the time when one day of work is completed. It is often transferred to a management device (personal computer or the like) provided in the office so that the person in charge at the office can manage the business situation for each driver using the management device.

  However, when business information is transferred from a device on a vehicle to a management device on the office side using a recording medium such as a memory card, there is a problem that work efficiency is not good and work mistakes are likely to occur. is there.

  Therefore, for example, as disclosed in Patent Document 1, a dedicated short range communication (DSRC) vehicle-mounted device that is a dedicated communication device capable of short-range wireless communication is mounted on each business vehicle. A roadside machine capable of DSRC wireless communication is installed at a predetermined location (entrance location) on the office side, and when the business vehicle enters the warehouse after completing the day's work, the DSRC on-board unit on the vehicle It is proposed that wireless communication is performed between the vehicle and the roadside machine installed at the warehousing place, and the business information is automatically transferred from the device on the vehicle to the management device on the office side.

  Patent Document 1 proposes to transfer business information from a taximeter to a DSRC on-board device for each business and store the business information in a memory on the DSRC on-board device.

JP 2006-92232 A

  By the way, in recent years, it has become necessary to manage operation information other than the above-described business information in a business vehicle such as a taxi. Specifically, in order to promote safe driving and economical driving with reduced fuel consumption, operation information such as driving speed and engine speed (rpm) is recorded sequentially or periodically. It is desired to store and manage operation information indicating the operation status during business.

  However, when the acquired operation information is to be transmitted to the roadside machine and the management device on the office side by wireless communication using the DSRC on-vehicle device, the operation information cannot be handled in the same manner as the business information described above. That is, in the case of sales information, it is possible to clearly separate the business contents every time passengers get on / off, and to extract information for each business. On the other hand, since it is necessary to acquire and record operation information such as vehicle speed and engine speed sequentially or periodically, the information cannot be separated by divisions such as for each business.

  Therefore, if the information is transferred from the operation recording device to the DSRC on-board unit at the timing of each business segment as in Patent Document 1, various problems may occur. For example, the frequency of occurrence of operation information to be recorded is not constant, and the information amount of operation information generated for each business is not constant, so the information amount of divided operation information varies greatly. As a result, there is a possibility of exceeding the memory capacity that can be stored at the transfer source before the operation information is transferred, and it becomes difficult to manage the divided operation information. In addition, after the operation information is transferred from the operation recording device to the DSRC on-board unit, the next new operation information may be generated on the operation recording device side. The operation information may remain on the operation recording device side without being transferred to the DSRC on-board unit.

  In addition, when performing wireless communication using the DSRC on-vehicle device, wireless communication can be performed only within a very limited time while the vehicle entering the predetermined location of the sales office passes through the vicinity of the roadside device. Therefore, the operation information accumulated on the vehicle must be efficiently transmitted to the roadside machine.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an in-vehicle information collection system capable of efficiently and efficiently transmitting operation information generated on a vehicle to a management device outside the vehicle. It is to provide.

In order to achieve the above-described object, the in-vehicle information collection system according to the present invention is characterized by the following (1) to ( 3 ).
(1) An in-vehicle information collection system that is mounted on a business vehicle such as a taxi and used to collect and manage information generated on the business vehicle,
DSRC in-vehicle communication that enables wireless communication between an in-vehicle information collection unit that collects operation information that occurs sequentially with the operation of the own vehicle and a communication device outside the vehicle that is within a limited distance from the own vehicle And consists of
The in-vehicle information collection unit holds a first storage unit that temporarily stores the operation information, and is stored in the first storage unit every time it detects that at least a predetermined time has elapsed. A transmission control unit that automatically transmits operation information to the DSRC in-vehicle communication unit,
The DSRC in-vehicle communication unit is provided with a second storage unit that receives operation information transmitted from the in-vehicle information collection unit and temporarily accumulates it as data for wireless communication ,
When the DSRC in-vehicle communication unit transmits the operation information stored in the second storage unit to a communication device outside the vehicle, the DSRC in-vehicle communication unit transmits the transmission information to the DSRC in-vehicle communication unit. Inquiry as to whether or not operation information that is not present exists in the first storage unit, and when the corresponding operation information exists, the transmission control unit transmits the operation information to the DSRC in-vehicle communication unit, and The DSRC in-vehicle communication unit transmits the received operation information to a communication device outside the vehicle .
(2) In the in-vehicle information collection system configured as described in (1) above,
When the transmission control unit of the in-vehicle information collection unit detects that the accumulation amount of the operation information held in the first storage unit exceeds a predetermined amount, before the predetermined time elapses. Even if it exists, the operation information stored in the first storage unit is automatically transmitted to the DSRC in-vehicle communication unit.
(3) In the in-vehicle information collection system configured as described in (1) above,
The transmission control unit of the in-vehicle information collecting unit manages an information accumulation flag indicating whether or not operation information that has not been transmitted to the DSRC in-vehicle communication unit exists in the first storage unit, In response to an inquiry from the communication unit, a response corresponding to the state of the information accumulation flag is sent.

According to the in-vehicle information collection system having the configuration (1), the operation information is received every time a predetermined time elapses from the in-vehicle information collection unit to the DSRC in-vehicle communication unit under the control of the transmission control unit. Since it is transmitted, it can prevent that the information content of the operation information transmitted by one transmission process fluctuates greatly. Therefore, it becomes easy to manage the operation information divided into a plurality of parts by a plurality of transmissions. In addition, before the amount of collected operation information exceeds the storage capacity of the first storage unit on the in-vehicle information collection unit, the operation information accumulated in the first storage unit is transferred to the DSRC in-vehicle communication unit side. Can be transferred. In addition, when the DSRC in-vehicle communication unit wirelessly communicates with a communication device outside the vehicle (corresponding to the roadside device described above), most of the operation information to be transmitted is the second provided on the DSRC in-vehicle communication unit. Therefore, the operation information can be efficiently transmitted, and the transmission of the operation information can be completed without omission even when the communicable time is short. Further, new operation information generated after the operation information is transmitted from the in-vehicle information collection unit to the DSRC in-vehicle communication unit can be transmitted to the DSRC in-vehicle communication unit side as remaining operation information.
According to the in-vehicle information collection system having the configuration (2), when the amount of operation information stored in the first storage unit exceeds a predetermined amount, transmission of operation information can be started immediately. Therefore, even if the frequency of occurrence of operation information changes greatly, it is possible to prevent the amount of information of operation information transmitted in one transmission process from fluctuating greatly. Therefore, it becomes easy to manage the operation information divided into a plurality of parts by a plurality of transmissions. In addition, before the amount of collected operation information exceeds the storage capacity of the first storage unit on the in-vehicle information collection unit, the operation information accumulated in the first storage unit is transferred to the DSRC in-vehicle communication unit side. Can be transferred.
According to the in-vehicle information collection system having the configuration of (3) above, the transmission control unit of the in-vehicle information collection unit uses the information accumulation flag to indicate that the operation information that has not been transmitted to the DSRC in-vehicle communication unit is the first Since it manages whether it exists in 1 memory | storage part, about the new operation information which generate | occur | produced after transmitting operation information with respect to the said DSRC vehicle-mounted communication part from the said vehicle-mounted information collection part, without said omission It becomes possible to transmit to the DSRC in-vehicle communication unit side .

  According to the present invention, the transmission control unit controls the information to be transmitted from the in-vehicle information collection unit to the DSRC in-vehicle communication unit every time a predetermined time elapses. It is possible to prevent the information amount of the information transmitted by the fluctuating greatly. Therefore, management of information divided into a plurality of pieces by a plurality of transmissions is facilitated. In addition, before the amount of collected information exceeds the storage capacity of the first storage unit on the in-vehicle information collection unit, the information stored in the first storage unit can be transferred to the DSRC in-vehicle communication unit side . In addition, when the DSRC in-vehicle communication unit wirelessly communicates with a communication device outside the vehicle (corresponding to the above-mentioned roadside device), most of the information to be transmitted is provided on the DSRC in-vehicle communication unit. Since it is stored in the storage unit, information can be transmitted efficiently, and transmission of information can be completed without omission even when communication is possible.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  One embodiment relating to the in-vehicle information collection system of the present invention will be described below with reference to FIGS.

  FIG. 1 is a block diagram showing a configuration example of an in-vehicle information collecting system in the embodiment, FIG. 2 is a sequence diagram showing an outline of the operation of the in-vehicle information collecting system shown in FIG. 1, and FIG. 3 is an in-vehicle information shown in FIG. It is a flowchart which shows the detailed operation | movement of the operation recording apparatus of an information collection system.

  The in-vehicle information collection system shown in FIG. 1 is roughly composed of an operation recording device 10 and a DSRC in-vehicle device 20. In addition, this in-vehicle information collection system is assumed to be mounted on a business vehicle such as a taxi.

  The operation recording apparatus 10 includes a microprocessor (CPU) 11, a memory 12, a clock circuit 13, and an interface 14. In addition, a speed sensor 15, a rotation sensor 16, and a GPS receiver 17 are connected to the operation recording device 10 in order to collect various information related to the operation status of a vehicle equipped with this in-vehicle information collection system. The speed sensor 15 outputs a signal generated according to the rotation of the wheel of the vehicle and is used to detect the vehicle speed. The rotation sensor 16 outputs a signal generated according to the rotation of the output shaft of the engine of the vehicle, and is used to detect the engine speed (rpm). The GPS receiver 17 outputs information on the current position of the vehicle by receiving radio waves from a plurality of GPS (Global Positioning System) satellites.

  In addition, about the various sensors connected to the operation recording apparatus 10, you may change or add suitably according to the kind of operation information which should be acquired. The GPS receiver 17 may be omitted.

  The clock circuit 13 provided on the operation recording device 10 outputs information on the current time and is used to detect the time when the operation information is acquired. The memory 12 is a storage device used for temporarily storing operation information acquired by the speed sensor 15, the rotation sensor 16, and the GPS receiver 17 on the operation recording device 10.

  The DSRC in-vehicle device 20 includes a DSRC radio device 21, a microprocessor (CPU) 22, a memory 23, and an interface 24. Further, a display unit 25 and a switch 26 are connected to the microprocessor 22 of the DSRC in-vehicle device 20, and an in-vehicle antenna 27 is connected to the DSRC radio device 21.

  The interface 14 of the operation recording device 10 and the interface 24 of the DSRC in-vehicle device 20 are connected to each other via a predetermined electric cable for communication. Therefore, the microprocessor 11 of the operation recording device 10 and the microprocessor 22 of the DSRC on-vehicle device 20 can communicate with each other via the electric cable which is a wired transmission path. However, serial communication is performed between the interface 14 and the interface 24 in order to facilitate connection. Therefore, when a large amount of information is transmitted at a time, it is inevitable that the time required for communication becomes relatively long.

  As will be described later, in the operation recording apparatus 10, operation information sequentially collected by the speed sensor 15, the rotation sensor 16, and the like is accumulated on the memory 12 and then controlled by the microprocessor 11 when a predetermined condition is satisfied. It is transferred to the DSRC in-vehicle device 20 via the interface 14. When this in-vehicle information collection system is mounted on a taxi vehicle, a taxi meter (not shown) is also connected to the interface 24 of the DSRC in-vehicle device 20. The business information generated by the taximeter is also transferred from the taximeter to the DSRC in-vehicle device 20 via a wired transmission path.

  The DSRC wireless device 21 is a device for performing wireless communication using radio waves with a partner station existing within a very narrow range (for example, a distance of about 10 m). As for the partner station, a roadside machine installed at a storage location or a delivery location of a predetermined sales office is assumed. That is, wireless communication is performed between the in-vehicle antenna 27 mounted on the vehicle and the roadside unit antenna 33 installed at a predetermined location outside the vehicle.

  The office side system 30 installed in the office of the business office for managing the operation information and the sales information is provided with a DSRC radio 31 and a personal computer (PC) 32. The DSRC radio 31 is It is connected to the roadside device antenna 33. Therefore, in a state in which wireless communication is possible between the DSRC wireless device 21 and the DSRC wireless device 31, communication can be performed between the microprocessor 22 of the DSRC vehicle-mounted device 20 and the personal computer 32 of the office side system 30. it can.

  Actually, the operation information transmitted by the microprocessor 11 of the operation recording device 10 is received by the microprocessor 22 of the DSRC on-vehicle device 20 and temporarily stored in the memory 23. When the vehicle enters the vehicle, when the wireless communication between the DSRC wireless device 21 and the DSRC wireless device 31 is possible, the operation information stored in the memory 23 under the control of the microprocessor 22 is stored in the office side system 30. Sent to.

  Next, an outline of the operation of the entire system shown in FIG. 1 will be described below with reference to FIG.

  In the operation recording device 10, operation information such as the vehicle speed detected by the speed sensor 15 and the engine speed detected by the rotation sensor 16 is stored in the memory 12 together with the current time information output from the clock circuit 13. Accumulated. While the vehicle is moving, new operation information is periodically generated, and each operation information is sequentially stored in the memory 12 in the order of generation.

  The microprocessor 11 of the operation recording apparatus 10 checks whether or not a predetermined condition is satisfied in step S11 of FIG. 2, and proceeds to the next step S12 when the condition is satisfied. Specifically, the process proceeds to step S12 when a predetermined time has elapsed or when the amount of operation information stored in the memory 12 exceeds a predetermined threshold.

  In step S <b> 12, the microprocessor 11 reads all the operation information stored on the memory 12 so far from the memory 12, and transmits the operation information to the DSRC in-vehicle device 20 via the interface 14 by wired communication.

  When the microprocessor 22 on the DSRC vehicle-mounted device 20 communicates with the operation recording device 10 via the interface 24 and receives operation information from the operation recording device 10, the microprocessor 22 proceeds to the process of step S21 and stores the received operation information in the memory 23. To accumulate. The process of step S21 is repeatedly performed every time operation information is transmitted from the operation recording device 10.

  In the next step S22, the microprocessor 22 monitors the state of the DSRC radio device 21, and whether the DSRC radio device 21 detects radio waves from the DSRC radio device 31 and the roadside device antenna 33 which are counterpart stations, that is, wireless. Check if communication is possible. When wireless communication becomes possible, the process proceeds to the next process, and DSRC wireless communication is performed between the DSRC onboard unit 20 and the office system 30.

  In addition, when the personal computer 32 of the office side system 30 detects a state in which DSRC wireless communication is possible with the DSRC on-board unit 20 and the DSRC wireless device 31, the personal computer 32 proceeds to the process of step S31 and requests operation information. (Operation information request) is transmitted to the DSRC in-vehicle device 20 via the DSRC radio 31.

  When the microprocessor 22 of the on-board DSRC device 20 receives the operation information request from the office-side system 30 by DSRC wireless communication, the microprocessor 22 proceeds to the process of step S23. And all the operation information accumulate | stored in the memory 23 is read, and it transmits to the office side system 30 by DSRC radio | wireless communication.

  The personal computer 32 of the office side system 30 receives the operation information transmitted from the DSRC in-vehicle device 20 via the DSRC radio 31 and stores it in its own storage device. Moreover, it is confirmed in step S32 whether reception of all the operation information which DSRC onboard equipment 20 sends is completed.

  If reception of all the operation information which DSRC onboard equipment 20 sends is completed, processing of personal computer 32 will progress from Step S32 to Step S33. Then, in order to confirm whether there is untransmitted operation information to be continuously received, the personal computer 32 transmits a confirmation request command to the DSRC in-vehicle device 20 via the DSRC radio 31.

  When the microprocessor 22 of the on-board DSRC device 20 receives the confirmation request from the office-side system 30 through DSRC wireless communication, the microprocessor 22 proceeds to step S24, and sends a confirmation request command to the operation recording apparatus 10 through wired communication via the interface 24. Send.

  When the microprocessor 11 of the operation recording apparatus 10 receives the confirmation request from the DSRC in-vehicle device 20 by wired communication, the microprocessor 11 proceeds to the process of step S13. And it is confirmed whether there exists continuation information, ie, the remaining (untransmitted) operation information which should be transmitted continuously. The confirmation method will be described later.

  If continuation information exists, the processing of the microprocessor 11 proceeds to step S14. Then, the information indicating “there is continuation information” is notified to the DSRC in-vehicle device 20 via the interface 14.

  When the microprocessor 22 of the on-board DSRC device 20 receives a notification “continuation information exists” from the operation recording device 10 in response to the sent confirmation request, the microprocessor 22 proceeds to the process of step S25. Then, the notification of “with continuation information” is transmitted to the office side system 30 by DSRC wireless communication via the DSRC wireless device 21.

  Further, the microprocessor 22 of the DSRC on-vehicle device 20 proceeds to the process of step S26 in order to request the transfer of continuation information, and transmits a command of “operation information request” to the operation recording device 10 via the interface 24.

  When the microprocessor 11 of the operation recording apparatus 10 receives “operation information request” from the DSRC on-vehicle device 20 after notifying “there is continuation information”, the microprocessor 11 proceeds to the process of step S15. Then, the remaining (untransmitted) operation information held on the memory 12 is read and transmitted to the DSRC on-board unit 20 via the interface 14.

  When the microprocessor 22 of the on-board DSRC device 20 receives the operation information from the operation recording device 10 after transmitting the “operation information request” command, the microprocessor 22 proceeds to the process of step S27. Then, the microprocessor 22 transmits the remaining operation information received from the operation recording device 10 to the office side system 30 by DSRC wireless communication via the DSRC wireless device 21.

  The personal computer 32 of the office side system 30 does not receive “with continuation information” or receives “with continuation information” in response to the confirmation request after detecting the completion of reception of operation information in step S32. When the remaining operation information is received, the process proceeds to step S34. Then, information indicating normal end (normal end notification) is notified to the DSRC in-vehicle device 20 via the DSRC radio 31.

  When the microprocessor 22 of the DSRC in-vehicle device 20 receives a normal end notification from the office system 30 via the DSRC radio 21 via the DSRC radio communication, the microprocessor 22 proceeds to the process of step S28. Then, a normal end notification is transmitted to the operation recording apparatus 10 via the interface 24. Thereafter, in step S <b> 29, the microprocessor 22 displays information “completion of warehousing process” on the display unit 25.

  When the microprocessor 11 of the operation recording apparatus 10 receives the normal end notification from the DSRC on-vehicle device 20, the microprocessor 11 proceeds to step S16 and completes the warehousing process.

  Next, details of the operation in the operation recording apparatus 10 will be described below with reference to FIG.

  In step S41, the microprocessor 11 of the operation recording apparatus 10 identifies whether or not operation information to be acquired has occurred. For example, when a signal indicating the current vehicle speed is output from the speed sensor 15 or a signal indicating the current engine speed is output from the rotation sensor 16, it is considered that the operation information has been generated, and the process proceeds to the next step S42. If generation of operation information is not detected, the process proceeds to step S48.

  In step S <b> 42, the microprocessor 11 acquires a set of the latest operation information including the detected vehicle speed, the engine speed, and the current time, and stores the operation information on the memory 12. A large number of pieces of operation information generated sequentially with the passage of time are arranged in order at different address positions on the memory 12 under the control of the microprocessor 11.

  In step S43, an information accumulation flag F1 prepared in advance on the memory 12 or on the internal memory of the microprocessor 11 in order to indicate a situation in which one or more unprocessed (not transferred) operation information exists on the memory 12. The state of is turned on. The information accumulation flag F1 is in an off state in an initial state, and is turned on when unprocessed operation information is held on the memory 12.

  In step S44, the microprocessor 11 uses an internal timer to identify whether or not a predetermined time has elapsed. When the predetermined time has elapsed, the process proceeds from step S44 to step S46. If the elapsed time has not reached the predetermined time, the process proceeds from step S44 to step S45. When a certain time has elapsed, the time counted by the internal timer is initialized and the elapsed time counting is restarted.

  In step S45, the microprocessor 11 compares the amount of operation information stored on the memory 12 with a predetermined threshold value to identify whether or not a certain amount of operation information has been stored. When the information amount of the operation information stored on the memory 12 reaches a certain amount, the process proceeds from step S45 to step S46. When the information amount of the operation information stored on the memory 12 has not reached a certain amount, the process returns from step S45 to step S41.

  In step S46, the microprocessor 11 on the operation recording device 10 reads all the operation information stored on the memory 12 from the memory 12, outputs them from the interface 14, and transfers them to the DSRC on-vehicle device 20 by wired communication. . After the transfer of all the operation information is completed, the process proceeds to the next step S47.

  In step S47, the microprocessor 11 switches the information accumulation flag F1 to an OFF state in order to indicate that unprocessed operation information does not exist on the memory 12.

  In step S48, the microprocessor 11 identifies whether or not the continuation information confirmation request (the command sent by the DSRC onboard device 20 in S24 of FIG. 2) has been received from the DSRC onboard device 20. If the reception of the confirmation request is detected, the process proceeds from step S48 to step S49, and if not detected, the process returns to step S41.

  In step S49, the microprocessor 11 checks whether the operation information that has not yet been transferred exists in the memory 12 by checking the state of the information accumulation flag F1. In other words, even after the operation information on the memory 12 is transferred to the DSRC on-vehicle device 20 in step S46 and the information accumulation flag F1 is switched off in step S47, new operation information is generated and new information is generated. When the operation information (unprocessed operation information) is stored in the memory 12, the information storage flag F1 is turned on again. If the information accumulation flag F1 is on (ON), the process proceeds from step S49 to step S50. If the information accumulation flag F1 is off (OFF), the process proceeds to step S53.

  In step S50, the microprocessor 11 of the operation recording apparatus 10 outputs information indicating “there is continuation information” from the interface 14 and notifies the DSRC on-vehicle device 20 (corresponding to S14 in FIG. 2).

  In step S51, the microprocessor 11 of the operation recording apparatus 10 identifies whether or not an operation information request from the DSRC in-vehicle device 20 has been received. That is, when the microprocessor 11 receives the “operation information request” sent from the DSRC on-vehicle device 20 in step S26 shown in FIG. 2, the process proceeds to the next step S52.

  In step S <b> 52, the microprocessor 11 reads the remaining (untransmitted) operation information existing on the memory 12 from the memory 12, outputs it from the interface 14, and transfers it to the DSRC in-vehicle device 20.

  In step S <b> 53, the microprocessor 11 of the operation recording apparatus 10 identifies whether or not a predetermined “normal end notification” has been received from the DSRC in-vehicle device 20. That is, when the microprocessor 11 receives the “normal end notification” sent from the DSRC on-vehicle device 20 in step S28 of FIG. 2, the process proceeds from step S53 to step S54, and the warehousing process is completed. This enables the next shipment.

  That is, by performing the operation shown in FIG. 3, every time a predetermined time elapses, the process proceeds from step S44 to step S46, and the operation information stored in the memory 12 of the operation recording device 10 is transferred to the DSRC in-vehicle device 20. Even if the predetermined time has not elapsed, if the amount of operation information stored in the memory 12 exceeds the threshold value, the process proceeds from step S45 to step S46, and is stored in the memory 12 of the operation recording device 10. The operated operation information is transferred to the DSRC in-vehicle device 20. Further, when a confirmation request for continuation information is received from the DSRC on-vehicle device 20, it is determined whether or not there is remaining operation information on the memory 12 by checking the state of the information accumulation flag F1 in step S49. Since the appropriate processing is executed, it is possible to prevent the transmission leakage of the operation information.

  Wireless communication between the DSRC on-board unit 20 and the office-side system 30 is possible only during a short time at the time of warehousing, but most of the operation information to be transmitted from the DSRC on-board unit 20 to the office-side system 30 Is present on the memory 23 of the DSRC in-vehicle device 20, the microprocessor 22 can read the operation information from the memory 23 at high speed and efficiently transmit it to the office side system 30.

  In addition, the latest operation information that has not yet been transferred from the operation recording device 10 to the DSRC in-vehicle device 20 may remain in the memory 12 of the operation recording device 10. In response to (S33 in FIG. 2), the DSRC vehicle-mounted device 20 makes a confirmation request to the operation recording device 10 (S24 in FIG. 2), so that the latest (last generated) operation remaining in the memory 12 is performed. Information can also be transmitted from the operation recording device 10 to the office side system 30 via the DSRC in-vehicle device 20. In this case, since serial communication is performed between the operation recording device 10 and the DSRC in-vehicle device 20, it is impossible to efficiently transmit data at high speed, but the amount of operation information remaining on the memory 12 is Since there are relatively few, the transmission to the office side system 30 can be completed in a short time. In addition, since most of the operation information is transferred from the operation recording device 10 to the DSRC on-board unit 20 and stored in the memory 23 before the wireless communication between the DSRC on-board unit 20 and the office system 30 is started. Therefore, it is not necessary to perform high-speed communication between the operation recording device 10 and the DSRC in-vehicle device 20, and it is necessary to provide a high-speed and expensive communication circuit in the interface 14 of the operation recording device 10 and the interface 24 of the DSRC in-vehicle device 20. Absent.

  As described above, the in-vehicle information collection system of the present invention is mounted on a business vehicle such as a taxi, operation information such as vehicle speed and engine speed is collected on the vehicle, and wireless communication is performed over a short distance to communication devices outside the vehicle. When the operation information is transferred by communication, the operation information can be transferred efficiently, so that the transfer of the operation information can be completed within a short time during which wireless communication is possible. In addition, the latest operation information generated last can be transferred without omission. The in-vehicle information collection system of the present invention is not limited to a taxi, and may be mounted on a transportation business vehicle such as a truck.

It is a block diagram which shows the structural example of the vehicle-mounted information collection system in embodiment. It is a sequence diagram which shows the outline | summary of operation | movement of the vehicle-mounted information collection system shown in FIG. It is a flowchart which shows the detailed operation | movement of the operation recording apparatus of the vehicle-mounted information collection system shown in FIG.

Explanation of symbols

10: Operation recording device 11: Microprocessor 12: Memory 13: Clock circuit 14: Interface 15: Speed sensor 16: Rotation sensor 17: GPS receiver 20: DSRC vehicle-mounted device 21: DSRC radio device 22: Microprocessor 23: Memory 24 : Interface 25: Display unit 26: Switch 27: On-board antenna 30: Office side system 31: DSRC radio 32: Personal computer 33: Roadside unit antenna

Claims (3)

An in-vehicle information collection system mounted on a business vehicle and used to collect and manage information generated on the business vehicle,
DSRC in-vehicle communication that enables wireless communication between an in-vehicle information collection unit that collects operation information that occurs sequentially with the operation of the own vehicle and a communication device outside the vehicle that is within a limited distance from the own vehicle And consists of
The in-vehicle information collection unit holds a first storage unit that temporarily stores the operation information, and is stored in the first storage unit every time it detects that at least a predetermined time has elapsed. A transmission control unit that automatically transmits operation information to the DSRC in-vehicle communication unit,
The DSRC in-vehicle communication unit is provided with a second storage unit that receives operation information transmitted from the in-vehicle information collection unit and temporarily accumulates it as data for wireless communication ,
When the DSRC in-vehicle communication unit transmits the operation information stored in the second storage unit to a communication device outside the vehicle, the DSRC in-vehicle communication unit transmits the transmission information to the DSRC in-vehicle communication unit. Inquiry as to whether or not operation information that is not present exists in the first storage unit, and when the corresponding operation information exists, the transmission control unit transmits the operation information to the DSRC in-vehicle communication unit, and The DSRC in-vehicle communication unit transmits the received operation information to a communication device outside the vehicle. When the transmission control unit of the in-vehicle information collection unit detects that the accumulation amount of the operation information held in the first storage unit exceeds a predetermined amount, before the predetermined time elapses. 2. The in-vehicle information collecting system according to claim 1, wherein the operation information held in the first storage unit is automatically transmitted to the DSRC in-vehicle communication unit. The transmission control unit of the in-vehicle information collecting unit manages an information accumulation flag indicating whether or not operation information that has not been transmitted to the DSRC in-vehicle communication unit exists in the first storage unit, The in-vehicle information collection system according to claim 1, wherein a response corresponding to a state of the information accumulation flag is transmitted in response to an inquiry from a communication unit.

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