JP3676206B2 - Vehicle information management system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle information management system that performs data transmission / reception between a vehicle information management apparatus that centrally manages vehicle information by a vehicle dedicated network and a connected device connected thereto.
[0002]
[Prior art]
FIG. 6 is a block diagram of a vehicle information management system mounted on a train as disclosed in, for example, Japanese Patent Laid-Open No. 60-74902.
Each of the first car to the fourth car is provided with an emergency call device 2 of the same configuration manufactured by the same manufacturer (Company Q). Cars 1 and 4 have a driver's cab, and a vehicle information management device 1 having a display device 3 is installed on the driver's cab and communicates with each vehicle's emergency call device 2 via a vehicle-dedicated communication network. It is carried out.
In the conventional vehicle information management system configured as described above, the vehicle information management device and the emergency call device 2 installed in each vehicle always communicate with each other using predetermined communication information. Recognize the state. If any abnormality occurs in any of the vehicles and the emergency call device 2 of the vehicle operates, information about which car is the emergency call device 2 and what kind of emergency state has occurred. The information is transmitted to the vehicle information management device 1 and the content is displayed on the display device 3.
Although not shown, there is a configuration in which the vehicle information management device 1 is mounted on each vehicle, and communication is individually performed between each vehicle information management device and the emergency notification device 2 in the vehicle. . Also in this case, each vehicle information management device 1 holds in advance communication information suitable for the emergency communication device 2 as a transmission destination, and performs communication using the communication information.
[0003]
[Problems to be solved by the invention]
In the conventional vehicle information management system as described above, the vehicle information management device installed in each vehicle communicates with the connection device using predetermined communication information suitable for the manufacturer of the connection device. It was not easy to change the manufacturer and type of the connected device. If an emergency call device made by a manufacturer (P company) having a structure different from that of the manufacturer (Q company) is changed or additionally connected, the communication unit on the vehicle information management device side is made by an emergency company made by P company. It is necessary to change to be able to communicate with the reporting device, or to change the communication part of the emergency reporting device made by company P to be the same as that made by company Q. there were. Furthermore, it is necessary to have at least one product from the same manufacturer for each connected device as a spare part in the event of a failure of the connected device.
[0004]
The present invention has been made to solve the above-described problems, and its purpose is to transmit / receive data with dedicated information suitable for a connected device even if the connection is changed or added to a connected device having a different structure. It is possible to obtain a vehicle information management system capable of performing the above.
[0005]
[Means for Solving the Problems]
In the vehicle information management system according to the present invention, a storage means for storing in advance a type code of a connected device connectable to each vehicle information management device and dedicated information corresponding to the type code; The dedicated information corresponding to the type code is acquired from the storage means, and the calling information obtained by adding the type code to the dedicated information is transmitted from the vehicle information management device to the connected device. Means for recognizing whether or not the call information is addressed to itself, means for fetching dedicated information in the call information if it is addressed to the user as a result of the recognition, and response information to which the own type code is added from the connected device means for transmitting to said vehicle information management device, and the vehicle information management apparatus, recognizes the type code of the connection device from the added type code in the response information Are those comprising means for updating the type code of a connection device said vehicle information management device so as to coincide with said species such code is recognized in advance.
[0006]
Further, when the type code of the connected device added to the response information from the connected device is different from the type code of the connected device recognized in advance by the vehicle information management device, the response information is discarded.
[0007]
The means for updating the type code of the connected device on the vehicle information management device side is that the type code added to the response information from the connected device and the type code recognized by the vehicle information management device are a predetermined number of times. It is updated when it is different continuously.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a configuration diagram of a vehicle information management system according to an embodiment of the present invention. Reference numerals 1a to 1d denote vehicle information management devices mounted on the vehicles No. 1 to No. 4 and transmit and receive information to and from each other through an inter-vehicle transmission line. Since the first car and the fourth car, which are vehicles at both ends of the train, have a driver's cab, display devices 3a and 3b are connected to the vehicle information management devices 1a and 1d provided in the driver's cab, respectively. Reference numerals 4a to 4d denote brake devices, and the respective manufacturers are C, D, E, and F. Reference numerals 5a and 5b denote propulsion devices, and the respective manufacturers are A company and B company. The vehicle information management devices 1a to 1d of each vehicle are provided with a necessary number of communication ports for connection devices, and communicate with each connection device by connecting the communication lines 6a to 6g. For example, in the example of FIG. 1, the vehicle information management device 1c mounted on the third car has two communication ports for the propulsion device 5b manufactured by B company and the brake device 4c manufactured by E company. Data communication with the B company propulsion device 5b is performed via the line 6b, and data communication with the E company brake device 4c is performed via the communication line 6e.
The vehicle information management devices 1a to 1d generate information necessary for vehicle control based on information from the connected devices 4a to 4d and 5a to 5b connected to the vehicle information management devices 1a to 1d, and control the vehicle and Information is displayed on the display devices 3a to 3b.
[0009]
A communication procedure between the vehicle information management device and the connected device in the vehicle information management system configured as described above will be described with reference to FIG.
First, the vehicle information management devices 1a to 1d make a call to the connection target device connected in the host vehicle at a constant cycle (for example, 100 ms). The vehicle information management devices 1a to 1d pre-assign and store a device code and a manufacturer code as a type code for the device name and its manufacturer name as the types of connection devices that may be connected and replaced due to failure or inspection. Furthermore, dedicated information to be transmitted is also determined in advance for each type of connected device. For example, in the configuration as shown in FIG. 1, there are a brake device and a propulsion device as connection devices, and it is necessary to replace the connection when there is a failure. The device code of the brake device is 01 and the device code of the propulsion device is 02. And assign. Further, if there is a possibility that the manufacturer exchanges and connects to any of the six companies from Company A to Company F, the manufacturer codes are assigned as 01, 02,. When the above call is made, for example, as shown in FIG. 3 (a), by adding information of the code (01) of the connected device and the manufacturer code (03), the transmission destination (brake device 4a manufactured by C company) Is specified, and dedicated information (dedicated information for calling the brake device made by Company C) predetermined for the transmission destination is transmitted.
[0010]
On the connected device side, whether or not the call from the vehicle information management devices 1a to 1d is applied to itself, for example, in the brake device 4a manufactured by Company C of the first car in FIG. 1, the call from the vehicle information management device 1a It is determined whether the manufacturer code (03) manufactured by company C and the device code (01) of the brake device are added to the information according to the recognition procedure described later. As shown in (b), it responds by adding its own device code (01) and manufacturer code (03) to dedicated information for response (dedicated information for brake device response made by company C).
When receiving a response from the connected device, the vehicle information management device side determines whether the response is from the connected device that it called for. For example, in the previous example, the vehicle information management device 1a Whether the manufacturer code (03) manufactured by C company and the device code (01) of the brake device are added to the response information returned from the system is determined according to the recognition procedure described later, and the above-mentioned dedicated response responded according to the determination result Capture information. After that, the next call is made in the same manner as above.
The transmission baud rate is determined in advance. Here it is 38.4kbps.
[0011]
Next, the recognition procedure for the call information from the vehicle information management device on the connected device side and the recognition procedure for the response information from the connection device in the vehicle information management device will be described with reference to FIGS. 4 and 5.
First, when turning on the power, the vehicle information management device tentatively sets any connected device name and manufacturer name stored in advance, recognizes that the connected device is connected, waits for the transmission cycle, The device code and manufacturer code are designated and call information is transmitted (S1 in FIG. 4).
On the connected device side, if the call information from the vehicle information management device is received, the device code and the manufacturer code added to the call information are read. Call information is captured (T1 in FIG. 5). Then, as shown in FIG. 3 (b), the response information is transmitted with the dedicated information with its own code added. If the received call information is not addressed to itself, the received data is discarded, and in this case as well, response information is transmitted using dedicated information with its own code added (T2 in FIG. 5).
[0012]
On the other hand, when the response information from the connected device is received, the vehicle information management device reads the device code and manufacturer code added to the response information, and whether or not it matches the device code and manufacturer code of the connected device recognized by itself. If it matches, the received response information is fetched (S2 in FIG. 4). By storing the device code and the manufacturer code as recognition information in the nonvolatile area, the connected device can be recognized by the stored code and called when the power is next turned on.
Conversely, in the above determination, if the code of the connected device recognized by the device does not match the code of the connected device added to the response information, the number of times of reception not matching the code added to the response information is stored. If the mismatched code is received continuously N times (for example, 20 times) a predetermined number of times, it is determined that the code has been replaced with the connected device, and the recognition information stored in the nonvolatile memory is stored. The device code and the manufacturer code in the received response information are rewritten (S3 in FIG. 4). Thus, it is not necessary to rewrite the recognition information when the power is turned on next time unless the connected device is changed.
As long as the number of receptions in which the code of the connected device recognized by the user does not match the code of the connected device in the response information does not reach N consecutive times, the received number is stored and the received data is discarded (FIG. 4). S4). Note that the reason why the recognition information is not rewritten until a mismatched code is received a predetermined number of times is to prevent an error such as garbled data or the like from being recognized as a connected device code.
If a device name that may be connected and exchanged, a device code stored in advance as the manufacturer name, and a code that does not exist in the manufacturer code are received, the received data is discarded (S5 in FIG. 4).
[0013]
The above operation will be described using a specific example of the configuration of FIG.
For example, it is assumed that the brake device 4b manufactured by D company is connected from the vehicle information management device 1b via the communication line 6c, but is changed to the brake device manufactured by C company due to a failure of the brake device 4b manufactured by D company and the power is turned on. .
At that time, the vehicle information management device 1b tentatively sets and recognizes the brake device 4b manufactured by D as a connected device connected by the communication line 6c. In the example, the device code 01 and the manufacturer code 04) are designated and a call is made. On the other hand, the brake device manufactured by company C that is actually connected responds by adding its own code (device code 01, manufacturer code 03). At this time, since the code added to the call information does not match the own code, it is determined that the code is not addressed to itself, and the dedicated information in the transmitted call information is not captured.
Next, since the manufacturer code (03) added to the response information is different from the manufacturer code (04) recognized by the vehicle information management device 1b, the dedicated information in the received response information is discarded. Then, after receiving the manufacturer code 03 N times continuously, the recognition information is transferred from the brake device 4b (device code 01, manufacturer code 04) manufactured by company D to the brake device manufactured by company C (device code 01, manufacturer code 03). And exclusive information in the received response information is captured. As a result, communication is automatically established between the vehicle information management device and the brake device manufactured by Company C that is changed and connected.
[0014]
Thus, as shown in FIG. 1, when connecting a total of six different connecting devices of the propulsion devices of Company A and Company B and the braking devices of Company C to Company F, Although it was necessary to have spare parts, according to the present invention, one propulsion device made by A company or B company, one brake device made by C company, D company, E company or F company, and It is only necessary to have a total of two spare parts.
Even if the communication port of the vehicle information management device on a certain vehicle breaks down and data transmission cannot be performed to the connected device connected from the communication port, the communication port of the vehicle information management device of the other vehicle If there is a surplus, it is possible to automatically transmit and receive data of dedicated information according to the connected device by connecting the connected device with a communication line from the communication port. For example, as shown in FIG. 1, when the communication line 6a from the vehicle information management device 1a of the first car to the brake device 4a manufactured by Company C fails, the communication line 6d is used from the vehicle information management device 1b of the second car to 1 The dedicated information suitable for the brake device manufactured by company C can be transmitted to the brake device 4a manufactured by company C of the No. car.
As described above, the vehicle information management device stores the device name and manufacturer name of the connected device and dedicated information corresponding to the device, and automatically recognizes the changed connected device even when the connection is changed. When changing or adding a connected device, it is possible to cope with a connected device of another manufacturer without modifying the vehicle information management device and the communication unit of the connected device, and the cost can be minimized. In addition, the number of spare parts for the connection device can be minimized.
[0015]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0016]
The type code of the connectable device that can be connected and dedicated information corresponding to it are stored in advance in the storage means, and when the call information is transmitted from the vehicle information management device to the connected device, the type code of the connected device that is recognized in advance is added and connected. Since the device side adds its own type code and transmits response information to the call information to the vehicle information management device, the vehicle information management device can recognize the type code of the connected device. Also, means for recognizing the type code of the connected device from the type code added to the response information, and updating the type code of the connected device previously recognized by the vehicle information management device so as to match the type code. Therefore, even if the connection device is changed and connected to a different type of connection device due to a failure of the connection device or the like, the vehicle information management device can transmit dedicated information corresponding to the connected connection device.
[0017]
In addition, if the type code of the connected device added to the response information from the connected device is different from the type code of the connected device recognized by the vehicle information management device, the response information is discarded, Ingestion of information can be prevented.
[0018]
In addition, when the type code of the connected device added to the response information from the connected device and the type code of the connected device recognized by the vehicle information management device are continuously different a predetermined number of times, it is recognized. Since the type code of the connected device is changed to the type code added to the response information, even if the connected device is changed and connected to a different type of connected device due to a failure of the connected device, the changed connected device can be automatically recognized, The dedicated information corresponding to the connected device after the change can be transmitted.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a vehicle information management system according to an embodiment of the present invention.
FIG. 2 is a diagram showing a communication procedure between the vehicle information management device and its connected devices in Embodiment 1 of the present invention.
FIG. 3 is a diagram showing information transmitted and received between the vehicle information management device and its connected devices in Embodiment 1 of the present invention.
FIG. 4 is a diagram showing a recognition procedure on the vehicle information management device side in the first embodiment of the present invention.
FIG. 5 is a diagram showing a recognition procedure on the connected device side in the first embodiment of the present invention.
FIG. 6 is a diagram showing a configuration of a conventional vehicle information management system.
[Explanation of symbols]
1a to 1d vehicle information management device,
4a Company B brake device as connected equipment,
4b Company D brake device as connecting device,
4c brake device made by company E as connecting equipment,
4d F company brake device as connected equipment,
5a Company A propulsion device as connected equipment,
5b Company B propulsion device as connection device, 6a-6g communication line.

Claims (3)

In a vehicle information management system that transmits and receives data between a vehicle information management device mounted on each vehicle of a train to which a plurality of vehicles are connected and a connected device connected to each vehicle information management device,
Storage means for storing in advance a type code of a connected device connectable to each vehicle information management device and dedicated information corresponding to the type code, and storing the dedicated information corresponding to a type code of a connected device recognized in advance Means for acquiring call information obtained by adding the type code to the dedicated information from the vehicle information management device to the connected device, whether the call information is addressed to the connected device side Means for receiving dedicated information in the call information if it is addressed to itself, and means for transmitting response information with its own type code from the connected device to the vehicle information management device , and the the vehicle information management apparatus, recognizes the type code of the connection device from the added type code in the response information, said vehicle information to be consistent with the species such code Vehicle information management system characterized by comprising means for updating the type code of the connection device management apparatus is recognized in advance. The response information is discarded when the type code of the connected device added to the response information from the connected device is different from the type code of the connected device recognized in advance by the vehicle information management device. The vehicle information management system according to 1. The means for updating the type code of the connected device on the vehicle information management device side is such that the type code added to the response information from the connected device and the type code recognized in advance by the vehicle information management device are a predetermined number of times. The vehicle information management system according to claim 1, wherein the vehicle information management system is updated when different.

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