JP2500396Y2 - Vehicle stop position detection device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle stop position detecting device using a transponder system which transfers information between a vehicle and the ground by digital transmission using radio.

[0002]

2. Description of the Related Art Conventionally, as a vehicle stop position detecting device of this type, for example, information is exchanged by light between the vehicle upper side and the ground side, and the vehicle position is judged to stop the vehicle. There are those that detect the position. on the other hand,
There are two types of transponder systems. One consists of a power-supplied ground element and an on-board device, and the power-supplied ground element is equipped with a transmitter / receiver coil, a power supply section, an on-vehicle information transmission section, and an on-ground information reception section. It is provided with a transmission / reception coil, a power transmission unit, an on-ground information transmission unit, and an on-vehicle information reception unit, which are upper layers, and the power wave transmitted from the power transmission unit via the transmission / reception coil is not used. In addition, the power wave is an unpowered ground element (power transmitted from the vehicle) that is generally used in a transponder system that transfers information between the vehicle and the ground by wireless digital transmission. It is a limited continuous wave that is transmitted from the vehicle to drive the ground element that receives the wave and uses the power source to transmit the fixed information inside and does not need to supply the power from the outside). is there. As shown in FIG. 7, the other one is composed of an unpowered grounding element and an on-board device 1. The unpowered grounding element is provided with a transmission / reception coil 2 which is a grounding element, and the power transmission unit 3 is a vehicle-mounted terminal. The power wave transmitted via the transmission / reception coil 4 is received and used as power.

[0003]

However, such a conventional vehicle stop position detecting device has a problem that a special device for transmitting light is required, resulting in an increase in cost. The present invention has been made by paying attention to such a conventional problem, and in a power-source type transponder system, a power wave is used to detect a stop position of a vehicle, thereby reducing costs. It is an object of the present invention to provide a vehicle stop position detection device that can be reduced in number and can be checked whether or not a detected part operates normally, and that can improve safety.

[0004]

SUMMARY OF THE INVENTION The gist of the present invention for attaining the above object is to provide: (1) information transmission between a vehicle and the ground by digital transmission using radio. A stop position detection device for a vehicle using a transponder system composed of an on-board device and a ground device, wherein the on-board device transmits from the vehicle to the ground and is fixed in the traveling direction of the vehicle. An on-vehicle information having a width, an electric power transmission section for transmitting an electric wave from the on-vehicle to the ground via the on-vehicle information, and receiving on-vehicle information via the on-vehicle information. An on-vehicle information receiving unit for controlling output based on the above, the ground device, the ground member for transmitting the on-vehicle information to the vehicle upper member,
Placed on the ground at an interval corresponding to the above-mentioned certain width,
When two antennas for receiving ground information and each antenna for receiving ground information receive the power waves transmitted from the car carrier, when the power wave is received by only one antenna for receiving ground information, the vehicle moves from a predetermined stop position. When it is determined that it is in front, and both antennas for receiving ground information receive power waves, it is determined that the vehicle is in a predetermined stop position region, and only the other antenna for receiving ground information is present. A vehicle stop position detection device, comprising: a reception level determination circuit unit that determines that the vehicle has exceeded a predetermined stop position when an electric power wave is received.

2. The vehicle according to claim 1, further comprising: a function checking unit that sends the same checking signal wave as the power wave on the ground and checks the function of the antenna for receiving ground information. It exists in the stop position detector.

[0006]

Operation: The train car is moving while transmitting the position information of the car. When one end of the car top approaches one of the antennas for receiving ground information, a power wave is received.

[0007] When the car top further advances and the other end of the car top approaches one of the antennas for receiving ground information,
Power waves are received. At this time, one end of the car top approaches the other of the antennas for receiving ground information, and the power wave is received.

[0008] Further, when the car top moves, the other end of the car top approaches the other of the antennas for receiving ground information, and the electric wave is received. That is, when only one of the antennas for receiving ground information receives a power wave, it can be determined that the vehicle is in front of the predetermined stop position, and both antennas for receiving ground information receive power. When each of the waves is received, it can be determined that the vehicle is in the area of the predetermined stop position. Further, when only the other antenna for receiving ground information receives the power wave, the vehicle is in the predetermined stop position. It can be judged that it is over. By using the transponder system, this determination information is received by the on-vehicle information receiving unit via the ground element to the vehicle element. Thereby, the vehicle can accurately grasp the stop position.

In the device provided with the function checking unit, the function checking unit transmits the same checking signal wave as the power wave to the antenna for receiving ground information. Thereby, it is possible to inspect whether or not the antenna for receiving information to ground operates normally.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 6 show an embodiment of the present invention.
As shown in FIGS. 1 and 2, the transponder stem on-vehicle device 10 is mounted on the vehicle side. On-board device 10
Has a power transmission unit 11, a ground information transmission unit 12, and an on-vehicle information reception unit 13. A power supply unit 14 is connected to the power transmission unit 11, the ground information transmission unit 12, and the on-vehicle information reception unit 13.

The power transmission section 11 comprises an oscillation section 11a, a power amplification section and a matching unit MT. Ground information transmitter 12
Is a transmission processing unit 12a, a modulation unit 12b, a power amplification unit 12
c and a matching device MT. Onboard information receiving unit 13
Includes a reception processing unit 13a, a demodulation unit 13b, and a reception input unit 13c. An on-board child 20 is connected to the on-board device 10. The train carrier 20 includes an f1 wave transmitting coil 21, an f2 wave transmitting coil 22, and an f3 wave receiving coil 23. The f1 wave transmission coil 21 transmits the f1 wave, which is an electric power wave, to the ground, has an 8-shape, and has a certain width in the traveling direction of the vehicle by winding n turns. As shown in FIG. 1 to FIG. 3, a storage case is buried in the ground, and two antennas 30 and 3 for receiving ground information are separated in the storage case by an interval corresponding to the width of the f1 wave transmission coil 21.
0a is arranged. Antenna 3 for receiving ground information
Reference numerals 0 and 30a respectively receive the f1 wave. The two antennas 30 and 30a for receiving ground information are connected to the f1 wave reception level determination circuit unit 40, which is a processing unit, via a matching unit MT. The f1 wave reception level determination circuit section 40 determines the position of the vehicle based on each f1 wave.

An f3 wave transmission coil 51, which is one of the ground elements, is provided on the ground. The on-vehicle information transmission unit 52 is connected to the f3 wave transmission coil 51. The on-vehicle information transmission unit 52 includes a transmission processing unit 52a, a modulation unit 52b, a power amplification unit 52c, and a matching unit MT. A power supply unit 58 is connected to the transmission processing unit 52a. f3
The wave transmission coil 51 includes the f1 wave reception level determination circuit unit 40.
F3 wave receiving coil 2 with the control information processed by
3 is to be transmitted.

Similarly, on the ground, f, which is one of the ground children,
A two-wave receiving coil 55 is provided. The ground information receiving unit 56 is connected to the f2 wave receiving coil 55. The ground information receiving unit 56 includes a reception input unit 56a and a demodulation unit 56.
b, a reception processing unit 56c, and a matching unit MT. A power supply unit 58 is connected to the reception input unit 56a. The f2 wave reception coil 55 receives the command signal transmitted from the vehicle to the ground as the f2 wave so that the f3 wave transmission coil 51 transmits the f3 wave to the f2 wave reception coil 23.

An antenna channel 61 is provided in the storage case on the ground below the antennas 30 and 30a for receiving ground information. The antenna channel 61 is
Like the f1 wave transmission coil 21, it has an 8-shape, and its width in the traveling direction corresponds to the distance between both antennas 30 and 30a for receiving ground information. The f1 wave reception antenna verification signal transmission circuit unit 62, which is a function verification for transmitting the same verification signal wave as the f1 wave to the antenna channel 61 and verifying the functions of the antennas 30 and 30a for receiving ground information, is provided with a matching device MT. Connected through.

Next, the operation will be described.

The on-board child 20 is advancing while transmitting the f1 wave from the f1 wave transmitting coil 21 and transmitting the f2 wave from the f2 wave transmitting coil 22. As shown in FIGS. 3 to 6, when one end of the f1 wave transmission coil 21 approaches the antenna 30 for receiving ground information, the f1 wave is received. Further, when the train carrier 20 advances and the other end of the f1 wave transmission coil 21 approaches the antenna 30 for receiving ground information, the f1 wave is received. At this time, one end of the f1 wave transmission coil 21 is connected to the antenna 3 for receiving ground information.
0a, the f1 wave is received.

Further, when the car core 20 advances, the other end of the f1 wave transmission coil 21 approaches the antenna 30a for receiving ground information, and the f1 wave is received. That is, when only the antenna 30 for receiving ground information receives the f1 wave, the f1 wave reception level determination circuit section 40:
It is determined that the vehicle is in the short position, which is before the predetermined stop position. Further, when both of the antennas 30 and 30a for receiving ground information receive the f1 wave, it is determined that the vehicle is in the just position, which is the region of the predetermined stop position. Further, when only the antenna 30a for receiving ground information receives the f1 wave, it is determined that the vehicle is in the over position, which is ahead of the predetermined stop position.

The command signal from the ground information transmitter 12 is f
When received by the f2 wave reception coil 55 via the two wave transmission coil 22, the f2 wave is sent to the f2 wave reception input unit 56c via the matching unit MT. The f2 wave sent to the f2 wave reception input unit 56c is demodulated by the demodulation unit 56b and output from the reception processing unit 56a as control condition information. The control condition information is input to the transmission processing unit 52a of the on-vehicle information transmission unit 52, becomes an f3 wave through the modulation unit 52b, the power amplification unit 52c, and the matching unit MT, and is transmitted from the f3 wave transmission coil 51 to the f3 wave.
It is transmitted to the wave receiving coil 23. The vehicle is drive-controlled based on the f3 wave.

F1 wave receiving antenna verification signal transmitting circuit section 6
2 receives the same verification signal wave as the f1 wave from the antenna channel 6
1 to the antennas 30 and 30a for receiving ground information. Thereby, the f1 wave reception level determination circuit unit 40 can inspect whether or not the antennas 30 and 30a for receiving ground information operate normally.

[0020]

According to the vehicle stop position detection device of the present invention, the position of the vehicle is accurately determined based on each power wave received by the two antennas for receiving ground information, and the determined information is displayed. Since the transponder system is used to communicate between the vehicle and the ground, accurate position information of the vehicle can be accurately delivered without using a special device, and the cost is reduced. be able to.

In the case where the function verifying unit is provided, if the function verifying unit transmits the same verifying signal wave as the power wave to the antenna for receiving ground information, the antenna for receiving ground information operates normally. Whether or not it can be inspected, and safety can be improved.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a vehicle stop position detection device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of a stop position detecting device according to an embodiment of the present invention.

FIG. 3 is an operation explanatory view showing an embodiment of the present invention.

FIG. 4 is an operation explanatory view showing an embodiment of the present invention.

FIG. 5 is an operation explanatory view showing an embodiment of the present invention.

FIG. 6 is an operation explanatory view showing an embodiment of the present invention.

FIG. 7 shows a conventional example and is a circuit diagram of a transponder system.

[Explanation of symbols]

 10 ... On-board device 20 ... On-board child 30, 30a ... Antenna for receiving ground information 40 ... f1 wave reception level determination circuit section (processing section) 51 ... f3 wave transmission coil 52 ... In-vehicle information transmission section 55 ... f2 wave receiving coil 56 ... ground information receiving section 61 ... channel antenna 62 ... f1 wave receiving antenna verification signal transmitting circuit section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Ueda 2-29-1 Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa 1 Kyosan Manufacturing Co., Ltd. (56) Reference JP-A-58-122475 (JP, A) Actual Kaihei 1-127008 (JP, U) Kyosan Circular, 1990, No3, VOL41 / Volume 176

Claims (2)

(57) [Scope of utility model registration request] 1. A vehicle stop position detection using a transponder system including an on-board device and a ground device, which is provided for exchanging information between a vehicle and the ground by digital transmission using radio. The on-board device is a device for transmitting from the on-board device to the ground and having a certain width in the traveling direction of the vehicle, and an electric wave from the on-board device via the on-board device. An on-vehicle information receiving unit that receives an on-vehicle information via the power transmission unit that transmits to the ground and the on-vehicle element, and controls and outputs based on the on-vehicle information, the ground device, A ground conductor that transmits the on-vehicle information to the car upper, and two pairs that are arranged on the ground at an interval corresponding to the certain width and that receive the power waves transmitted from the car upper, respectively. An antenna for receiving ground information and one for receiving ground information When only the antenna receives the power wave, it is determined that the vehicle is before the predetermined stop position, and when both antennas for receiving ground information receive the power wave, the vehicle is in the predetermined stop position area. And a reception level determination circuit unit that determines that the vehicle has passed a predetermined stop position when only the other antenna for receiving ground information receives a power wave. The vehicle stop position detection device. 2. The function verification unit for transmitting the same verification signal wave as the power wave on the ground to verify the function of the antenna for receiving the ground information, and further comprising a function verification unit. Vehicle stop position detection device.