JPH1067324A - On-vehicle device for transponder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set an external device in such a way as being driven only when receiving necessary information, by receiving information sent from the transponder ground device side on a train, identifying a sort of a prescribed information, and outputting a drive signal which drives the external device for supporting the drive of the train. SOLUTION: When an on-vehicle element a1 approaches to a ground element b1 by traveling of a train A, the on-vehicle device (a) receives information stored in the ground device (b). When the received information is spot information, the on-vehicle device (a) outputs a signal expressing that the spot information is received from the ground, to an external device (c). When a logic circuit 3 judges the spot information to be normal, the spot information is outputted to the external device (c) and the train A can obtain the accurate own train position from the ground side. This constitution can drive the external device, only when the sorting of a prescribed information is received, and simplify the constitution of the on-vehicle device and the external device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle device for a transponder device, and more particularly to an on-board device for a transponder device. Regarding what you can do.

[0002]

2. Description of the Related Art FIG. 3 shows a state in which a train A traveling on a rail r performs bidirectional communication between a car (train) and the ground, and performs train control based on information obtained by the communication. Is shown.

That is, an on-board device for a transponder device (hereinafter referred to as an "on-board device") a is mounted on the train A, and a transponder device ground A device (hereinafter, referred to as a “ground device”) b is provided. Then, when the train a approaches the ground device b and the vehicle child a1 of the vehicle device a approaches the ground child b1 of the ground device b, between the vehicle and the ground via the vehicle child a1 and the ground child b1. Information is exchanged.

FIG. 4 is a schematic configuration diagram of a conventional on-board device a 'mounted on a train A. First, the reception of a signal (information) on a vehicle will be described. For example, information D (48 bits in the illustrated example) consisting of predetermined bits as shown in FIG. Is transmitted from the ground side toward the upper side of the vehicle, and when the upper child a1 approaches the lower child b1, information D from the ground side is received by the upper child a1. And
The received signal is sent to a carrier detection circuit 1a composed of a modulation circuit 1 for extracting information D from the ground side and a filter circuit for detecting a carrier having a predetermined frequency for carrying the information D. You.

[0005] A signal output from the modulation circuit 1, that is, a received message transmitted from the ground side is processed by a reception circuit 2 formed of an amplification circuit and the like, and then processed by a logic circuit 3 mainly composed of a CPU. Is input to The logic circuit 3 determines whether the received information is true or false. This determination is made by, for example, the 4C2 method. That is, if there are two or more pieces of the same information among the information of the past four times repeatedly received, the same information is determined to be the information transmitted from the ground side. The information is sent to the external device c that supports the operation of the train A.

The external device c is driven by an output signal when the carrier detection circuit 1a detects a carrier, that is, information (hard CD in FIG. 4) indicating that a signal has been received from the ground side. Based on the information obtained from the circuit 3, for example, a brake pattern is generated to control the train A.

The transmission of information from the upper side of the vehicle to the ground side is performed by transmitting a signal of an on-vehicle telegram to be transmitted to the ground side generated by the logic circuit 3 of the train A to a transmitting circuit 4 comprising an amplifier circuit and a vehicle upper part. It is transmitted to the ground via a1.

Therefore, when the on-board message indicates, for example, the traveling position of the train A, the ground device b:
Based on the received signal, the front train position information can be generated and transmitted to the train following the train A.

In FIG. 4, a check message in the message sent from the transmission circuit 4 is used to check whether the on-board device a 'is functioning normally, and is created by the logic circuit 3. A check message using a carrier wave of a predetermined frequency similar to the information from the ground side is transmitted to the vehicle
When the check message is received correctly, the on-board device a 'is determined to be normal, and when the check message is not correctly received, it is determined to be abnormal.

[0010]

However, the above-mentioned conventional on-board device is configured such that the external device is driven every time the carrier wave detection circuit detects a carrier wave. It is driven not only when the vehicle approaches the ground, but also when a check message is transmitted, or when noise is generated by a train inverter or the like, and the processing in the external device becomes complicated.

In order to prevent such inconvenience, it is conceivable that the logic circuit drives the external device only when it is determined that the received signal is normal information from the ground side. As described above, since it is necessary to perform a process such as the 4C2 method to determine the authenticity of the information as described above, the processing time becomes long. In such a case, a new problem such as a delay in the correction timing occurs.

The present invention has been made in order to solve the above-mentioned drawbacks, and an object of the present invention is to use an arrangement of information contents transmitted from the ground side toward the vehicle, so that the on-vehicle information is arranged. It is an object of the present invention to provide an on-board device capable of driving an external device only when the device receives necessary information from the ground side.

[0013]

In order to achieve the above object, an on-vehicle apparatus according to the present invention comprises: a receiving means for receiving, on a train, information transmitted from a transponder ground apparatus side; An information type discriminating means for discriminating the type of the received information, and when the information type discriminating means discriminates a predetermined information type, outputs a drive signal for driving an external device that supports the operation of the train. And a driving signal output unit that performs the operation.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an on-board device a according to an embodiment of the present invention, and the same components as those of the conventional on-board device a ′ in FIG.

This on-board device a has the same structure as that of the conventional on-board device a 'shown in FIG. 4 except that the carrier wave detection circuit 1a is omitted.
The configuration is the same except that D) is output. Therefore, the description of each component in FIG. 1 is the same as that of the on-board device a ′ in FIG. 4 described above, and further description will be omitted.

Before describing the control operation according to the present embodiment, information D transmitted from the ground side to the vehicle upper side in FIG. 5 will be described. Initially, a frame indicating one information D (the left side in FIG. 5) ) Is provided with an information type storage section d1 for indicating the type of information D consisting of several bits (6 bits in FIG. 5).

The information D shown in FIG.
The information type storage unit d1 is followed by the operation information storage unit d2 indicating the up or down operation direction of the train, and the ground information indicating the identification data of the ground child b1. A number storage unit d3, an unused storage unit d4 in consideration of future use, and an equipment room number storage unit d5 indicating an identification number of an equipment room in which the ground equipment b relating to the ground b1 is installed.
, And an installation kilometer storage unit d6 indicating the installation distance of the ground child b1 from a predetermined position. in this way,
In each case, an information type storage unit d1 is provided at the beginning of the frame.

Next, a control operation when point information is received from the ground will be described with reference to the flowchart of FIG.

When the train a travels, the upper child a1 becomes the ground child b.
When approaching 1, the information stored in the ground device b is received by the on-board device a (Step 100: Yes (Y). Hereinafter, Step is referred to as S). The signal received by the upper child a1 is analyzed by the logic circuit 3, and it is first determined whether or not point information is included at the beginning of the frame (S).
102). In this determination, if the received signal is based on noise or is a check message, subsequent distance correction is not performed (No at S102 (N)). In addition,
Although omitted in the flowchart of FIG. 2, in the case of other information that is not point information, predetermined train control is performed based on the received information.

When the received information is point information (S
102, a signal indicating that the on-board device a has received the point information from the ground (see the software CD in FIG. 1) is output from the external device c.
When the logical circuit 3 determines that the point information is normal by the 4C2 method, the point information is output to the external device c. Thus, the train A can obtain an accurate own train position from the ground side (Yes at S104, S106). Therefore, the external device b can perform the distance correction in consideration of the processing time based on the received point information (S108).

As described above, the external device c is the on-board device a
Is driven only when the point information is received, the configuration can be simplified, and since the point information is located at the beginning of the frame of the information D from the ground side,
Output can be made to the external device c at an early stage.

In the above example, the information D from the ground side is used.
Was used as the point information, but it is needless to say that other information such as train guidance information for passengers may be used.

[0023]

The on-vehicle apparatus according to the present invention comprises a receiving means for receiving information transmitted from a transponder ground apparatus on a train, and an information type discrimination for discriminating a type of the information received by the receiving means. Means and a drive signal output means for outputting a drive signal for driving an external device that supports the operation of the train when the information type determination means determines the type of the predetermined information. Even if the carrier wave detection circuit is omitted from the device, the external device can be driven only when a predetermined type of information is received, and the configurations of the on-board device and the external device can be simplified.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an on-board device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a correction control operation of a moving distance of a train.

FIG. 3 is an explanatory diagram showing exchange of information between an on-board device and a ground device.

FIG. 4 is a schematic configuration diagram of a conventional on-board device.

FIG. 5 is an explanatory diagram of a frame indicating point information.

[Explanation of symbols]

 a On-board device for transponder device (on-board device) a1 On-board device b Ground device for transponder device (ground device) b1 Ground device c External device D information d1 Information type storage unit 1 Modulation circuit 2 Receiving circuit 3 Logic circuit 4 Transmission circuit

Claims (1)

[Claims] 1. A receiving means for receiving, on a train, information transmitted from a transponder ground device side, an information type determining means for determining a type of information received by the receiving means, and the information type determining means. A drive signal output unit that outputs a drive signal for driving an external device that supports the operation of the train when the type of the predetermined information is determined, and an on-vehicle device for a transponder device.