JP6940346B2 - On-board unit - Google Patents

Description

The present invention relates to an in-vehicle device, and more particularly to a technique for transferring recorded operation data to a device outside the vehicle.

For example, in a company that manages the operation of trucks, buses, taxi vehicles, etc., it is necessary to manage the operation status of each vehicle, and to perform labor management and safe driving management for each crew member who drives each vehicle.

Therefore, in order to make it possible to grasp the actual operation status of the vehicle, an in-vehicle device such as a digital tachograph, which is an operation recorder, is mounted on each vehicle. Such an on-board unit automatically collects various operation data, and records and stores the operation data on a recording medium such as a memory card.

For example, when each company creates a daily report on the operation of each vehicle as a daily work, it is generally the case that the memory card on which the operation data is recorded is manually removed from the on-board unit by the crew and taken back to the office. , Attach it to the management PC in the office to transfer data. The management PC can, for example, extract important data by performing predetermined data processing on the operation data read from the memory card, and create a daily report based on the result. Therefore, each crew member has no choice but to perform the work of attaching / detaching and carrying the memory card on a daily basis.

On the other hand, Patent Document 1 shows a technique for an on-board unit to acquire information from a server on the Internet via a repeater and a radio base station. It also shows a technique for surely updating the provided information without bothering the user. Specifically, in the on-board unit, when the ignition SW of the vehicle is turned off, the vehicle is located at a predetermined place, the time is within the predetermined time zone, and the voltage of the RSSI signal is higher than the voltage threshold. If it is large, the information profile is sent to the information management server. Then, the vehicle-mounted device updates the stored contents of the provided information storage unit based on the data received from the information management server, and then turns off the standby power supply to stop the vehicle-mounted device.

Further, Patent Document 2 shows a technique for easily constructing a mobile body management system capable of monitoring the state of a mobile body by a wireless transmission / reception device having a wireless LAN function at low cost. Specifically, the wireless transmission / reception device arranged on a vehicle or the like includes a sensor for acquiring information on a moving body, a position information acquisition unit for the moving body, a time acquisition unit, a clock function unit, and a storage unit for storing data. It is equipped with a wireless LAN transmitter / receiver and a central computing device. Then, the state, position information, and time information of the object to be measured provided in the moving body are wirelessly transmitted.

Further, the vehicle-mounted device of Patent Document 3 shows a technique for easily transferring the traveling data recorded on the recording medium without removing the recording medium. Specifically, the on-board unit records the running data including the image data taken at the time of the occurrence of a hilarious hat or the like while the vehicle is running on the memory card together with the time. Further, when the vehicle arrives in the garage, the on-board unit connects to the PC on the office side by wireless LAN and transmits the traveling data and the like recorded on the memory card to the PC. When the PC finishes receiving the traveling data and the like, it gives an instruction to initialize the memory card to the in-vehicle device. The PC creates a daily report using the driving data and the like, registers it in the storage memory, and deletes unnecessary data in the driving data. Upon receiving the initialization instruction, the on-board unit initializes the memory card.

Japanese Unexamined Patent Publication No. 2008-261867 Japanese Unexamined Patent Publication No. 2011-109290 Japanese Unexamined Patent Publication No. 2013-117778

For example, when the technology of Patent Document 3 is adopted, the data recorded on the memory card can be transferred from the on-board unit to the PC on the office side by using the wireless LAN communication, so that the crew can use the memory card. There is no need to remove or carry it from the in-vehicle device, and the troublesome work in daily operation can be reduced.

However, since a system such as Patent Document 3 is independently configured for each company, wireless communication is performed between the on-board unit and the access point in a place other than the vicinity of a specific access point of the wireless LAN. The line cannot be secured. Therefore, when the daily operation of each vehicle is completed and the vehicle is received, the vehicle is stopped after the vehicle moves within the range of a specific area specified in advance in which the radio wave reception environment of the access point is good. The crew is then required to operate a specific button to initiate the data transfer. Therefore, it is not necessary to remove or carry the memory card, but the crew has to do the troublesome work to start the data transfer of the on-board unit.

Note that, for example, as in Patent Document 1, the ignition SW of the vehicle is OFF, the vehicle is located at a predetermined location, the time is within a predetermined time zone, the voltage of the RSSI signal is larger than the voltage threshold value, and the like. It is also conceivable to start the process automatically based on the above. However, since Patent Document 1 is a technique for the vehicle-mounted device to acquire information from an external device, there is a problem in applying it to control for transmitting operation data of the vehicle-mounted device to the external device.

For example, it is assumed that the engine is turned on immediately after the vehicle is received after the operation is finished and the engine is once turned off (ignition off), and the vehicle starts to move again. Further, since the operation data stored in a recording medium such as a memory card has a very large amount of information, the time required for data transfer tends to be long. Therefore, if the transfer of the operation data is automatically started according to the conditions as in Patent Document 1, the vehicle may start moving and go out of the communication area before the transfer of the operation data is completed. Therefore, there is a possibility that the transfer of operation data will fail. In addition, if the transfer of operation data fails, the crew has no choice but to perform troublesome tasks such as removing and carrying the memory card.

The present invention has been made in view of the above circumstances, and an object of the present invention is to eliminate troublesome work such as button operation of a crew member for data transfer at the time of warehousing of a vehicle, and to enable failure of data transfer work. The purpose is to provide an in-vehicle device capable of significantly reducing the characteristics.

In order to achieve the above-mentioned object, the vehicle-mounted device according to the present invention is characterized by the following (1) to (3).
(1) An operation data acquisition unit that automatically collects operation data related to the operation of the vehicle on the vehicle, records it on a predetermined recording medium, and holds it.
A communication unit having a wireless communication function for the device on the vehicle to communicate with the wireless access point outside the vehicle,
A communication control unit that starts transmitting operation data held by the operation data acquisition unit to a predetermined destination by using the wireless communication of the communication unit when a predetermined transmission start condition is satisfied.
With
It said communication control unit, as the transmission start condition, before Symbol ignition off der Rukoto vehicle, said the ignition a certain period of time has elapsed since turned off, to said operation data acquisition unit is the recording medium From the user regarding the start of transmission of the operation data as the transmission start condition, including detecting that the operation data is being recorded and that the communication unit is connected to a predetermined wireless access point. Does not include detecting the operation of
An in-vehicle device characterized by that.

(2) The communication control unit, as the transmission start condition includes sensing the received signal strength is greater than or equal to the predetermined value,
The on-board unit according to (1) above.

( 3 ) The communication control unit allows acceptance of user input regarding switching or change of the transmission start condition.
The on-board unit according to (1) or (2) above.

According to the in-vehicle device having the configuration of (1) above, the transmission of operation data can be started after a certain period of time has elapsed after the ignition of the in-vehicle device is turned off. Therefore, for example, if the engine is stopped for a short time after the vehicle is stored and the engine is started again, the transmission of operation data will not be started, and it is possible to avoid interruption of communication during data transmission. .. If the ignition remains off even after a certain period of time has passed since the ignition of the in-vehicle device was turned off, it is unlikely that the vehicle will start moving in a short time. However, the transmission can be completed while maintaining a stable communication state.

Further, according to the in-vehicle device having the above configuration (1 ), the transmission of the operation data can be started during the recording of the operation data. Therefore, the transmission of operation data can be started without any special operation as a part of the work of the crew member who is on the vehicle on the day before the work is completed. Further, since the operation data can be started to be transmitted when the communication unit is connected to the predetermined wireless access point, it is possible to prevent the occurrence of unnecessary operation outside the communication area.

According to the vehicle-mounted device of the above configuration (2), since the received signal strength can begin transmission of the traveling data when the predetermined or more, it is possible to suppress the occurrence of a communication error.

According to the in-vehicle device having the configuration of ( 3 ) above, the transmission start condition is optimized according to the actual work environment of the user such as the company that manages the vehicle and the crew, or according to the behavior pattern of each crew member. can do.

According to the on-board unit of the present invention, it is possible to eliminate troublesome work such as button operation of a crew member for data transfer at the time of warehousing of a vehicle, and to significantly reduce the possibility of failure of the data transfer work.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

FIG. 1 is a block diagram showing a configuration example of a system used for vehicle operation management. FIG. 2 is a block diagram showing a specific example of the usage environment of the system shown in FIG. FIG. 3 is a flowchart showing a state of the vehicle-mounted device and a characteristic operation example according to the embodiment of the present invention. FIG. 4 is a flowchart showing the processing of the condition adjustment mode of the vehicle-mounted device according to the embodiment of the present invention.

Specific embodiments of the present invention will be described below with reference to the respective figures.

<System configuration example>
FIG. 1 shows a configuration example of a system used for vehicle operation management. The operation management system 5 of the present embodiment is introduced as equipment of a business operator such as a trucking company or a bus company, for example. The operation management system 5 manages the operation status of vehicles such as trucks and buses, and is an operation recording device (hereinafter referred to as a digital tachograph) 10 and an office PC 30 used in a state of being mounted on each vehicle as an on-board unit. And include.

The office PC 30 is composed of a general-purpose computer device installed in the office and manages the operation status of the vehicle. The network 70 is a local network (LAN) capable of packet communication, and includes a wireless LAN access point 8. The office PC 30 is connected to the access point 8 via the network 70.

The digital tachograph 10 is mounted on a vehicle and records operation data such as entry / exit time, mileage, traveling time, traveling speed, speed over, engine speed over, sudden start, sudden acceleration, and sudden deceleration. The digital tachograph 10 includes a CPU 11, a non-volatile memory 26A, a volatile memory 26B, a recording unit 17, a card I / F18, an audio I / F19, an RTC (clock IC) 21, a SW input unit 22, and a display unit 27.

The CPU 11 comprehensively controls each part of the digital tachograph 10. The non-volatile memory 26A stores an operation program or the like executed by the CPU 11.

The recording unit 17 records data such as operation data and video. A memory card 65 owned by the crew is freely inserted and removed from the card I / F18. The CPU 11 writes data such as operation data and video to the memory card 65 connected to the card I / F18. A built-in speaker 20 is connected to the voice I / F19. The speaker 20 emits a sound such as an alarm.

The RTC21 (timekeeping unit) measures the current time. ON / OFF signals of various buttons such as a warehousing button and a warehousing button are input to the SW input unit 22. The display unit 27 is composed of an LCD (liquid crystal display) and displays not only communication and operation status but also alarms and the like.

Further, the digital tachograph 10 includes speed I / F12A, engine rotation I / F12B, external input I / F13, sensor input I / F14, analog input I / F29, GPS receiving unit 15, camera I / F16, communication unit 24, and the like. It has a power supply unit 25.

A vehicle speed sensor 51 that detects the speed of the vehicle is connected to the speed I / F 12A, and a speed pulse from the vehicle speed sensor 51 is input. The vehicle speed sensor 51 may be provided as an option in the digital tachograph 10, or may be provided as a device separate from the digital tachograph 10. A rotation pulse from an engine rotation speed sensor (not shown) is input to the engine rotation I / F12B. An external device (not shown) is connected to the external input I / F13.

An acceleration sensor (G sensor) 28 that detects acceleration (G value) (sensing an impact) is connected to the sensor input I / F 14, and a signal from the G sensor 28 is input. Examples of the G sensor include those having a method of reading mechanical displacement due to acceleration as vibration and a method of reading optically, but the G sensor is not particularly limited. Further, the G sensor may detect an impact from the front of the vehicle (detecting deceleration G), may also detect an impact from the left-right direction (detect a lateral G), or may detect an impact from the rear of the vehicle. May be detected (acceleration G may be detected). The G sensor is composed of one or a plurality of sensors so as to be able to detect these accelerations.

Signals such as a temperature sensor (not shown) for detecting the engine temperature (cooling water temperature) and a fuel amount sensor (not shown) for detecting the amount of fuel are input to the analog input I / F29. The CPU 11 detects various operating states based on the information input via these I / Fs.

The GPS receiving unit 15 is connected to the GPS antenna 15a, receives a signal transmitted from a GPS satellite, and acquires a current position (GPS position information).

An in-vehicle camera 23 installed in the vehicle and capturing an image of the periphery (for example, the front) of the vehicle to acquire image data is connected to the camera I / F16. The in-vehicle camera 23 has, for example, an image sensor in which 300,000 pixels, 1 million pixels, and 2 million pixels are arranged on an imaging surface imaged through a fisheye lens. The image sensor is composed of known sensors such as a CMOS (complementary metal oxide semiconductor) sensor and a CCD (charge-coupled device) sensor. The video (image data) captured by the vehicle-mounted camera 23 is recorded in the recording unit 17 in chronological order, but is repeatedly overwritten so as to be recorded for a predetermined time. This predetermined time is, for example, a time corresponding to several seconds (for example, 2 seconds, 4 seconds, 10 seconds, etc.) before and after the accident so that the situation of the accident can be understood at the time of the accident. The image captured by the camera 23 may be a still image or a moving image. The images before and after the accident are displayed on the display unit 33 of the office PC 30, as will be described later.

Further, the in-vehicle camera 23 may be provided in plurality so as to be able to image not only the front of the vehicle but also the rear, left side, and right side of the vehicle, or a plurality of image sensors for capturing each direction may be provided. It may be housed in a housing. Therefore, the in-vehicle camera 23 can simultaneously capture the image in the left-right direction and the image in the rear in addition to the image in front of the vehicle.

The vehicle-mounted camera 23 may be capable of capturing images in any angle direction (for example, 45 ° direction), not limited to imaging in the front, left-right direction, and rear of the vehicle. In addition to capturing visible light, the vehicle-mounted camera 23 may be provided with an infrared camera so that it can capture images even at night.

The communication unit 24 is a wireless communication module corresponding to the communication standard of the wireless LAN, and can secure a line for wireless communication with a predetermined access point. In the present embodiment, when the digital tachograph 10 exists within a predetermined range (for example, a range of about 100 m in radius) from the access point 8 installed near the office, the communication unit 24 can connect to the access point 8. become.

The power supply unit 25 supplies power to each unit of the digital tachograph 10 by turning on the ignition switch or the like. Further, a binary signal indicating an on / off state of the ignition switch is output to the CPU 11.

In the present embodiment, after the vehicle has arrived, the operation data held by the memory card 65 or the like regarding the operation of the day is transferred to the office PC 30 via the communication unit 24, the access point 8, and the network 70. The CPU 11 is provided with a function of the communication control unit 11a for the purpose of performing the communication control unit 11a. In addition, the communication control unit 11a can automatically start transmission of operation data. Data representing a condition for automatically starting transmission of operation data is held in the transmission condition table TB1.

The transmission condition table TB1 may be allocated to the storage area on the non-volatile memory 26A, or may be allocated to the storage area on the memory card 65, for example. However, it is desirable to arrange the transmission condition table TB1 in a storage area such as a flash memory in which data can be rewritten so that the transmission condition can be changed by the user as needed.

The transmission condition table TB1 holds, for example, the following data DC1 to DC5.
DC1: Data showing the validity / invalidity of one condition that the ignition is switched from on to off.
DC2: Data showing the validity / invalidity of one condition that the ignition-off state continues for a certain period of time (T seconds). It also includes data for a certain period of time (T seconds).
DC3: Data indicating the validity / invalidity of one condition that the operation data is being recorded.
DC4: Data indicating the validity / invalidity of having a connection with the access point as one condition.
DC5: Data representing the validity / invalidity of one condition that the received signal strength (RSSI) is equal to or higher than the threshold value. It also includes RSSI threshold data.

Further, the transmission condition table TB1 also holds data of the entire logical expression indicating that the five conditions of the data DC1 to DC5 are combined by a logical product (AND) or a logical sum (OR).

The CPU 11 has a condition adjustment mode function for updating the contents of the transmission condition table TB1 according to a user's instruction.

On the other hand, the office PC 30 is composed of PCs operating on a general-purpose operating system. The office PC 30 functions as an operation management device and has a CPU 31, a communication unit 32, a display unit 33, a storage unit 34, a card I / F35, an operation unit 36, an output unit 37, a voice I / F38, and an external I / F48. ..

The CPU 31 comprehensively controls each part of the office PC 30. The communication unit 32 can communicate with the digital tachograph 10 via the network 70. Further, the communication unit 32 can also connect to various databases (not shown) connected to the network 70, and can acquire necessary data.

The display unit 33 displays an accident image, a hazard map, and the like in addition to the operation management screen. The storage unit 34 stores various programs such as system analysis software for displaying the image received from the digital tachograph 10 and displaying the position information of the vehicle on the map.

A memory card 65 is freely inserted and removed from the card I / F35. The card I / F35 inputs the operation data measured by the digital tachograph 10 and stored in the memory card 65. The operation unit 36 has a keyboard, a mouse, and the like, and accepts operations by an office manager. The output unit 37 outputs various data. A microphone 41 and a speaker 42 are connected to the voice I / F 38. The office manager can also make a voice call using the microphone 41 and the speaker 42, and when a vehicle accident occurs, he / she contacts the emergency department or the police.

In the present embodiment, the operation data held in the memory card 65 can be transferred to the office PC 30 by using the communication function of the wireless LAN, so that it is not necessary to remove the memory card 65 from the digital tachograph 10. Further, the card I / F35 of the office PC30 can be omitted.

An external storage device (storage memory) 54 is connected to the external I / F 48. The external storage device 54 holds the accident point database (DB) 55, the operation data DB 56, and the hazard map DB 57. The GPS position information (latitude, longitude) of the vehicle at the time of the accident, which is transmitted from the digital tachograph 10, is registered in the accident point database (DB) 55. In the operation data DB 56, in addition to the entry / exit time, speed, mileage, etc., sudden acceleration / deceleration, sudden steering wheel, speed over, engine speed over, etc. are recorded as operation data. In the hazard map DB 57, map data in which a mark indicating a point (accident point) where an accident occurred in the past is superimposed on the map is registered. In this hazard map, areas where disasters such as natural disasters are expected, evacuation sites, etc. may be described.

<Specific examples of system usage environment>
A specific example of the system usage environment shown in FIG. 1 is shown in FIG.
The digital tachograph 10 is mounted on the vehicle 81 and is arranged at a position where the driver can operate it. The front panel of the digital tachograph 10 is provided with a plurality of buttons 22a and a display unit 33 that can be operated by the driver.

As shown in FIG. 2, for example, the vehicle 81 that has completed the operation of the day and enters the premises of the company passes through the entrance gate 82, moves to a predetermined parking lot, and parks. In the example of FIG. 2, the office PC 30 is installed inside the office building 83, and the access point 8 is installed near the office building 83.

When the parking lot exists in the vicinity of the access point 8, the digital tachograph 10 can connect a line to the access point 8 while the vehicle 81 is parked in the parking lot. However, since the warehousing vehicle 81 may temporarily move for some work, the radio wave of the access point 8 does not always reach the warehousing digital tachograph 10.

If the warehousing vehicle 81 stays in the same place where the radio waves of the access point 8 reach for a long time, the access point 8 is used to use the large amount of operation data or the like recorded by the digital tachograph 10 on the memory card 65 or the like. And can be transferred to the office PC30. However, for example, if the vehicle 81 starts moving before the transfer of operation data is completed, the wireless communication line between the digital tachograph 10 and the access point 8 may be cut off, and the transfer of operation data may fail. be.

By starting the transfer of operation data in an appropriate state by the communication control unit 11a of the digital tachograph 10, it is possible to avoid the failure of the data transfer. Further, when the communication control unit 11a automatically starts the transfer of operation data, the driver's button operation or the like becomes unnecessary.

<Operation example of in-vehicle device>
FIG. 3 shows a state and a characteristic operation example of the digital tachograph 10 according to the embodiment of the present invention.

When the operation of the vehicle 81 on the day is completed and the vehicle 81 is stored as shown in FIG. 2, for example, the operation data of the day recorded on the memory card 65 of the digital tachograph 10 is sent to the office PC30 side. Need to transfer. By acquiring the operation data from the digital tachograph 10 of each vehicle, the office PC 30 can create a daily report on the operation work of the corresponding crew member or vehicle on the day.

In the present embodiment, since the digital tachograph 10 of each vehicle includes a communication unit 24 having a wireless LAN function, the digital tachograph 10 can be used as an office by wirelessly connecting the communication unit 24 and the access point 8. Data can be transferred to the PC 30.

Therefore, the driver of each warehousing vehicle drives his / her own vehicle and moves to a predetermined communication area where the radio wave of the access point 8 reaches (S11). For example, the vehicle is stopped at a predetermined parking lot on the premises of a specific company. Then, the driver turns off the ignition switch of the own vehicle and stops the engine of the vehicle (S12).

In the case of a general digital tachograph, after step S12, the driver needs to make a judgment and a button operation for instructing the start of data transfer. However, in the digital tachograph 10 of the present embodiment, since the communication control unit 11a has a function for automatically starting data transfer, the driver does not need to operate a button. That is, the communication control unit 11a of the CPU 11 can automatically instruct the start of data transfer by executing the process PR1 shown in FIG.

Further, the content of the processing PR1 shown in FIG. 3 is determined according to the content of the data held in the transmission condition table TB1. That is, the content of the processing PR1 shown in FIG. 3 is an example, and the actual determination conditions may change depending on the content of the above-mentioned data DC1 to DC5 and the like. The processing PR1 shown in FIG. 3 will be described below.

As the first condition, the communication control unit 11a identifies in S13 whether or not the engine state has been switched from on to off. In reality, the state of the engine is identified by turning the ignition switch on and off. This condition corresponds to the content of the data DC1 on the transmission condition table TB1.

As the second condition, the communication control unit 11a identifies in S15 whether or not the engine has been turned off continuously (S14) and the elapsed time since it was turned off has reached a certain time (T seconds). .. This condition corresponds to the content of the data DC2 on the transmission condition table TB1.

The communication control unit 11a identifies whether or not the recording unit 17 is recording data as the third condition (S16), and the communication unit 24 connects the wireless line to the access point 8 as the fourth condition. Identify whether it is medium or not (S16). Here, the third condition and the fourth condition correspond to the contents of the data DC3 and DC4 on the transmission condition table TB1, respectively.

Further, as the fifth condition, the communication control unit 11a identifies in S17 whether or not the reception signal strength (RSSI) of the wireless LAN in the communication unit 24 is good or not by comparing with the threshold value. The fifth condition corresponds to the content of the data DC5 on the transmission condition table TB1.

In the process PR1 shown in FIG. 3, the process proceeds to S18 only when all of the first to fifth conditions are satisfied. In step S18, the communication control unit 11a performs data communication processing for transferring the operation data of the day recorded on the memory card 65 or the like to the office PC 30 via the communication unit 24, the access point 8, and the network 70. Instruct the start of.

Further, when the data communication is started in S18, the communication control unit 11a stops the recording operation by the recording unit 17. That is, when the data communication is started, it automatically recognizes that the operation work of the day is completed, and even if the driver does not input a special button operation, the recording unit 17 forcibly records the data. finish. Therefore, it is possible to realize a non-operation mode by eliminating the need for a button operation by the driver at the end of the operation work.

When the data communication started in S18 is completed in a normal state, the communication control unit 11a proceeds from S19 to S20. In step S20, the communication control unit 11a displays a message indicating that the transmission of operation data is completed on the screen of the display unit 33 of the digital tachograph 10, and outputs a similar message by voice to notify the driver. ..

<Significance of each transmission condition>
Adopting each of the first to fifth conditions in the processing PR1 shown in FIG. 3 has the following meanings.

First condition (DC1): Unintended communication that may occur when the operation recorder is activated can be avoided.
Second condition (DC2): It is possible to exclude the situation where the engine of the vehicle is stopped for a short time and the engine is restarted immediately and the vehicle starts moving. That is, when there is a possibility that the vehicle moves to an area where communication is not possible after starting the data transfer, the communication is not started in order to avoid the data transfer failing in the middle.
Third condition (DC3): Transfer of operation data can be performed as part of the operation of the vehicle. Further, since the end of the operation work can be automatically identified, it can be used to eliminate the need for the driver's button operation for instructing the end of the operation work.
Fourth condition (DC4): When the vehicle is located outside the communication area of the access point 8, it is possible to prevent the communication unit 24 from unnecessarily repeating the connection attempt of the wireless line.
Fifth condition (DC5): Occurrence of communication error can be suppressed.

<Condition adjustment mode>
FIG. 4 shows the processing of the condition adjustment mode of the vehicle-mounted device according to the embodiment of the present invention.
The digital tachograph 10 shown in FIG. 1 can accept an input for the user to change the contents of the transmission condition table TB1 as needed. That is, the contents of the transmission condition table TB1 can be updated by the CPU 11 executing the processing of the condition adjustment mode shown in FIG. This makes it possible to optimize the system in consideration of, for example, the difference in the actual operating environment of each company and the difference in the behavior pattern of each crew member. The contents of the process of FIG. 4 will be described below.

For example, when the user performs a special operation such as pressing and holding the specific button 22a for 5 seconds, the CPU 11 detects this in S31 and S32, regards it as an adjustment mode start instruction, and proceeds to S33.

The CPU 11 further monitors the button operation of the user to identify in S33 whether or not there is a combination change instruction of the transmission start condition. If there is an instruction to change the combination of transmission start conditions, the process proceeds to S34, and the CPU 11 changes the content of the combination of transmission start conditions on the transmission condition table TB1 according to the input operation of the user, and changes the changed data to the transmission condition table TB1. Save to.

As a result, the user changes the valid / invalid switching of each condition of the data DC1 to DC5 on the transmission condition table TB1 and the combination of the logical product (AND) or the logical sum (OR) of the five conditions of the data DC1 to DC5. can do.

Further, the CPU 11 further monitors the button operation of the user to identify in S35 whether or not there is an adjustment instruction for the engine off time length (T seconds). If there is an instruction to adjust the engine off time length, the process proceeds to S36, and the CPU 11 changes the engine off time length related to the condition of the data DC2 on the transmission condition table TB1 according to the input operation of the user, and transmits the changed data. Save in the condition table TB1.

Further, the CPU 11 further monitors the button operation of the user to identify in S37 whether or not there is an instruction to change the RSSI threshold value. If there is an instruction to change the RSSI threshold value, the process proceeds to S38, and the CPU 11 changes the content of the RSSI threshold value related to the condition of the data DC5 on the transmission condition table TB1 according to the input operation of the user, and transmits the changed data. Save in the condition table TB1.

Further, the CPU 11 further monitors the button operation of the user to identify in S39 whether or not it is an instruction to end the adjustment mode, and if it is an instruction to end, ends the process of FIG. 4 and returns to the normal operation mode.

<Advantages of Digital Tachograph 10>
In the above-mentioned digital tachograph 10, when the operation work on the day is completed and the vehicle arrives in the warehouse, the operation data recorded on the memory card 65 or the like is transmitted to the wireless LAN without the driver performing a special button operation or the like. It can be transferred to the office PC 30 using the access point 8. Moreover, since the communication control unit 11a starts the transmission at an appropriate transmission start timing according to the contents of the transmission condition table TB1, it is possible to reduce transmission failures. For example, even if the ignition of the vehicle is off, the transmission is not started in the situation where the vehicle is likely to start moving again, so that it is possible to avoid the data transfer from stopping in the middle.

Further, since the CPU 11 accepts the user's input operation for changing the contents of the transmission condition table TB1 and executes the operation shown in FIG. 4, the transmission start condition can be changed for each user as needed. .. That is, for example, it is possible to optimize the system in consideration of the difference in the actual operating environment of each company and the difference in the behavior pattern of each crew member.

In the above-described embodiment, it is assumed that the on-board unit is a digital tachograph 10, but the present invention can be applied to an on-board unit other than the digital tachograph 10, for example, a drive recorder. Further, the present invention may be applied to an on-board unit in which a digital tachograph and a drive recorder are integrated.

Here, the features of the vehicle-mounted device according to the above-described embodiment of the present invention are briefly summarized and listed below in [1] to [4], respectively.
[1] An operation data acquisition unit (recording unit 17) that automatically collects operation data related to the operation of the vehicle on the vehicle, records it on a predetermined recording medium, and holds it.
A communication unit (24) having a wireless communication function for the device on the vehicle to communicate with the wireless access point outside the vehicle.
A communication control unit (11a) that starts transmitting operation data held by the operation data acquisition unit to a predetermined destination by using the wireless communication of the communication unit when a predetermined transmission start condition is satisfied.
With
As the transmission start condition, the communication control unit detects that at least the ignition of the vehicle is off and a certain time has elapsed since the ignition was turned off (S13 to S15).
An on-board unit (digital tachograph 10).

[2] The communication control unit detects that at least the operation data acquisition unit is recording operation data on the recording medium as the transmission start condition (S16).
The on-board unit according to the above [1].

[3] The communication control unit has at least the communication unit being connected to a predetermined wireless access point (S16) and / or the received signal strength of the predetermined or higher (S17) as the transmission start condition. Detect,
The vehicle-mounted device according to the above [1] or [2].

[4] The communication control unit allows acceptance of user input regarding switching or change of the transmission start condition (S34, S36, S38).
The vehicle-mounted device according to any one of the above [1] to [3].

5 Operation management system 8 Access points 10 Digital tachographs 11, 31 CPU
11a Communication control unit 12A Speed I / F
12B engine rotation I / F
13 External input I / F
14 Sensor input I / F
15 GPS receiver 15a GPS antenna 16 camera I / F
17 Recording unit 18 Card I / F
19 Voice I / F
20, 42 speakers 21 RTC
22 SW input unit 22a button 23 In-vehicle camera 24, 32 Communication unit 25 Power supply unit 26A Non-volatile memory 26B Volatile memory 27 Display unit 28 G sensor 29 Analog input I / F
30 office PC
33 Display unit 34 Storage unit 35 Card I / F
36 Operation unit 37 Output unit 38 Voice I / F
41 Microphone 48 External I / F
51 Vehicle speed sensor 54 External storage device 55 Accident point DB
56 Operation data DB
57 Hazard map DB
65 Memory card 70 Network 81 Vehicle 82 Entrance gate 83 Office building PR1 processing TB1 Transmission condition table

Claims (3)

An operation data acquisition unit that automatically collects operation data related to the operation of the vehicle on the vehicle, records it on a predetermined recording medium, and holds it.
A communication unit having a wireless communication function for the device on the vehicle to communicate with the wireless access point outside the vehicle,
A communication control unit that starts transmitting operation data held by the operation data acquisition unit to a predetermined destination by using the wireless communication of the communication unit when a predetermined transmission start condition is satisfied.
With
It said communication control unit, as the transmission start condition, before Symbol ignition off der Rukoto vehicle, said the ignition a certain period of time has elapsed since turned off, to said operation data acquisition unit is the recording medium From the user regarding the start of transmission of the operation data as the transmission start condition, including detecting that the operation data is being recorded and that the communication unit is connected to a predetermined wireless access point. Does not include detecting the operation of
An in-vehicle device characterized by that. Said communication control unit, as the transmission start condition includes sensing the received signal strength is greater than or equal to the predetermined value,
The vehicle-mounted device according to claim 1, characterized in that. The communication control unit allows acceptance of user input regarding switching or change of the transmission start condition.
The vehicle-mounted device according to claim 1 or 2 , wherein the vehicle-mounted device is characterized by the above.

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