JPS5932301A - Transmitter for information in electric motor coach - Google Patents

Abstract

PURPOSE:To prevent a system-down of a transmission system by forming the systems of transmission line loops to terminal stations from a central station in two pairs while utilizing transmission lines among the terminal stations in a unit. CONSTITUTION:When a disconnection is generated in a transmission line 16b in the system 16, the loop constituted by transmission lines 16a, 16b, 16c is cut and the function of the loop stops, but the loop constituted by transmission lines 15a, 15b, 15c of the system 15 is normal. Accordingly, the terminal station 3 and the terminal station 5 are each given control commands received from the central station 1 through the terminal stations 2 and 4. With monitor informations which must be transmitted over the central station 1 from the terminal station 3 and the terminal station 5, informations being transmitted to the terminal stations 2 and 4 are connected to reception messages at the terminal stations 2 and 4, and transmitted to the central station 1 through the transmission lines 15b, 15c.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information transmission device for an electric vehicle.

An example of a conventional one is shown in FIG. In the figure, symbols ko,
3. Gu and! The terminal stations indicated by are each placed in each vehicle. The central station l transmits a message to the terminal station - via the transmission path 6, and the terminal station receives a control command for itself from this message, connects its own response message to this received message, and transmits the message to the terminal station through the transmission line. 7, the terminal station sy transmits.

Similarly, the terminal station 3 connects its own response message to the received message and transmits it to the terminal station Hiroshi via the transmission path t.

In the same way, the messages are transmitted sequentially through the transmission path? , 10, and the concatenated final message of each station's response message is transmitted to the central station/. (In this case, if a response message is not particularly required, each terminal station only receives and receives control commands for itself from the received message, and there is no need to connect the response messages.) This allows each terminal station to It is possible to efficiently transmit control commands to the control device (not shown) of each vehicle via the station and to collect monitor information from the control device of each vehicle.

By the way, in the case of electric vehicles, the control unit is often constructed as a set of co-vehicles. Therefore, in addition to the exchange of information between the driver's cab and each vehicle, there is also information exchange between one vehicle within the seven units. It is often necessary in The transmission lines /l and /2 in FIG. 1 are for this purpose, and are used to connect terminal stations within the same unit.

This is for exchanging information between the three.

Similarly, transmission line/3. /ψ connects the terminal stations V.

The conventional device has a drawback in that if a failure occurs at seven locations in the loop-configured transmission system, the entire transmission system will be affected. For example, if a disconnection occurs in the transmission line 7 in Figure 1,
The control command from the central station l reaches only the terminal station K, and the terminal stations J, f, and j become uncontrollable. Also, collection of response messages, that is, monitor information, becomes impossible for the entire military.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide an information transmission device for an electric vehicle that is equipped with means for making the loop configuration redundant and preventing system failure of the transmission system. With the goal.

An embodiment of the present invention will be explained with reference to FIG. In Figure 1, there is one transmission route for sending messages from the central station/3, where terminal stations λ and S belong to one system/3, and terminal stations 3 and S belong to the other system L. belongs to. Terminal stations K and G in one system 15 are connected to the central station via transmission lines /j a +isb and /Sc.
are connected in a loop to form a transmission path, and the terminal stations 3 and S in the other system /6 are connected to the transmission line /6a.
, /Ab and /4c are connected in a loop to the central office I to form a transmission path.

As shown in Figure 141, two terminal stations in the same unit are connected by transmission lines /l and /,2, and terminal stations ψ, S are connected by transmission lines 13 and /F. has been done.

In the above configuration, the control commands sent from the central station 1 to each system / 1゜l
Terminal stations within the same control unit (terminal stations KO and 3 or DATO!R) can use transmission #I/t and l or 13 and /lI within the unit. Control commands from the central station 1 and monitor information to be sent to the central station 1 are constantly exchanged.

Next, a case where a failure occurs in the transmission path will be explained. −
As an example, if a disconnection occurs in transmission line /&b in system /6, in this case transmission line /4a.

The loop formed by /Ab and /6c is cut and stops functioning, but the transmission lines /ja, /, and tb of system 15.

The loop formed by /jc is still intact. Therefore, given. In addition, the monitor information to be sent from terminal station 3 and terminal station S to the central station/station is connected to the messages received at terminal station ko and hiro, and the information sent to terminal station kb.

It will be sent to the central office via 15C.

According to the above-mentioned inventions 5 and 2, the transmission line loop system from the central station to the terminal stations is set up as a group, and the terminal stations within the control units are connected in order to exchange information between the control units. By using the transmission line between the two, we have realized a device that does not stop sending and receiving information even if a failure occurs.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an information transmission device in a conventional electric vehicle, and FIG. 1 is a block diagram showing an information transmission device in an electric vehicle according to an embodiment of the present invention. In the figure, l is the central office, λ, 3. G and S are terminal stations, //,
/2 and /3. /4I is an interconnected transmission line, 13
is the first transmission system, 16 is the first transmission system, /ja, /
&b, /jc and /6a, /6b, /4c are cascaded transmission lines. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] Control commands from the central station are transmitted to each vehicle through a terminal station placed in each electric vehicle, and monitor information from each vehicle is collected by the central station. Among them, two terminal stations arranged in adjacent vehicles are interconnected by transmission lines to form one control example unit.In an information transmission device for an electric vehicle, a transmission line connects the central station and the terminal station. is one cascade-connected transmission system, two terminal stations in each of the control units are separately arranged in the first and λ-th transmission systems, The two terminal stations K constantly exchange the control commands from the central station and the monitor information from each vehicle via the interconnected transmission line, and from this, the central station and each terminal station An information transmission device for an electric vehicle, characterized in that information can be exchanged between the two through any of the transmission systems.