JPH0962987A - Beacon data receiving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently receive beacon data, to miniaturize a device and to reduce current consumption in the whole device. SOLUTION: As against both beacon data transmitting devices transmitting optical beacon and radio wave beacon, a single data processing part 4 judges whether beacon data can be received or not by recognizing the kind of a road where the vehicle is traveling at present based on present position information from a position detecting device 5, selects one of an optical beacon receiver 1 and a radio wave beacon receiver 2 by detecting a reception level from the radio wave beacon receiver 2 by a level detecting part 3 and efficiently receives beacon data. When it is judged that the road where the vehicle is traveling at present is not the one where the beacon data transmitting device is arranged and also it is judged that data reception is impossible, the power source of the receiver is turned off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beacon data receiving device, and more particularly to a beacon data transmitting device which receives beacon data transmitted from a beacon data transmitting device for transmitting an optical beacon and a radio wave beacon. Depending on the type of road installed, determine the type of road on which the vehicle is currently located, detect the reception level of the radio beacon, and select the optical beacon receiver or radio beacon receiver to efficiently beacon. The present invention relates to a beacon data receiving device that receives data.

[0002]

2. Description of the Related Art Conventionally, as a beacon data receiving device of this type, a data processing unit for processing the received data is provided for each of the optical beacon receiver and the radio beacon receiver. The beacon receiver is always kept in the data receiving state.

[0003]

However, since the conventional beacon data receiving apparatus as described above requires a data processing unit corresponding to each receiver, the interface between each receiver and the data processing unit is required. In addition to two systems, the device becomes relatively large, and each receiver must be able to receive beacon data at all times,
There is a problem that the current consumption of the device is large and the efficiency of the entire device is poor.

The present invention solves the above-mentioned conventional problems, and reduces the current consumption of the entire device, can efficiently receive beacon data, and can reduce the size of the device. The purpose is to provide.

[0005]

In order to achieve the above object, a beacon data receiving apparatus of the present invention comprises an optical beacon receiver for receiving optical beacon data, a radio beacon receiver for receiving radio beacon data, and A level detection unit that detects the reception level of the radio wave beacon receiver, a position detection device that detects current position information of the vehicle, and a road on which the vehicle is currently traveling based on the current position information detected by the position detection device. Recognizes the type of, and determines whether the data beacon transmission device is installed on the identified road,
When it is determined that the data beacon device is installed, one of the optical beacon receiver and the radio beacon receiver that can be efficiently received based on the reception level detection signal output from the level detection unit is selected, and And a data processing unit that receives and processes the received beacon data.

Further, according to the present invention, the data processing unit determines that the type of road on which the vehicle is currently traveling is not the road on which the data beacon transmission device is installed, and it is determined that beacon data cannot be received. In this case, a processing function for turning off the power source of the optical beacon receiver or the radio beacon receiver corresponding thereto is further provided.

[0007]

Therefore, according to the present invention, for both beacon data transmitting devices for transmitting optical beacons and radio wave beacons, a single data processing unit is used for the road on which the vehicle is currently traveling based on the current position information. By deciding whether the beacon data can be received by recognizing the type of, the level detection unit detects the reception level from the radio beacon receiver to detect either the optical beacon receiver or the radio beacon receiver. Beacon data can be selected and received efficiently, and the interfaces between both receivers and the data processing unit can be integrated into one system, and the overall size of the device can be reduced.

According to the present invention, when it is determined that the road on which the vehicle is currently traveling is not the road on which the beacon data transmission device is installed and it is determined that data cannot be received, the receiver The power consumption can be reduced by turning off the power supply.

[0009]

1 is a block diagram showing the configuration of a beacon data receiving apparatus according to an embodiment of the present invention.

In FIG. 1, 1 is an optical beacon receiver for receiving beacon data sent from an optical beacon transmitter (not shown), and 2 is a radio beacon for receiving beacon data sent from a radio beacon transmitter (not shown). The receiver 3 is a level detection unit that detects the reception level of the beacon data of the radio beacon receiver 2, and the level detection signal is the optical beacon receiver 1 and the radio beacon receiver 2
Is output to the data processing unit 4.

The data processing unit 4 selects one of the optical beacon receiver 1 and the radio beacon receiver 2 which can be efficiently received based on the reception level detection signal output from the level detection unit, and receives the reception beacon data. Has a function of processing the information, and recognizes the type of road on which the vehicle is currently traveling based on the current position information detected by the position detection device 5, and transmits a data beacon for an optical beacon and a radio wave beacon to the identified road. The processing function to determine whether the device is installed, and the type of the road on which the vehicle is currently traveling are determined not to be the road where the data beacon transmission device is installed, and when it is determined that the beacon data cannot be received, It has a processing function of turning off the power of the beacon receiver 1 or the radio beacon receiver 2.

The position detecting device 5 detects the current position information of the vehicle obtained by a navigation system or the like.

Next, the operation of the embodiment constructed as described above will be described. The optical beacon receiver 1 and the radio beacon receiver 2 receive the beacon data sent from the respective beacon data transmitters, decode the beacon data, and output the decoded data to the data processing unit 4. The data processing unit 4 receives data from the optical beacon receiver 1 or the radio beacon receiver 2 and performs a predetermined process.

The data processing unit 4 also recognizes the type of road on which the vehicle is currently traveling based on the current position information detected by the position detection device 5, and uses the identified road for optical beacons and radio wave beacons. It is determined whether the data beacon transmission device of is installed. Further, in the data processing unit 4, when it is determined that one or both of the data beacon devices for the optical beacon and the radio beacon are installed, the data processing unit 4 can efficiently use the received level detection signal output from the level detection unit 3. One of the receivable optical beacon receiver and the radio beacon receiver is selected, and the reception data of the selected beacon receiver is output to the data processing unit 4 to perform a predetermined process. As a result, either the optical beacon receiver or the radio beacon receiver can be selected to efficiently receive the beacon data, and the interfaces between both receivers and the data processing unit can be integrated into one system. This makes it possible to downsize the entire device.

Further, when the data processing unit 4 determines that the type of road on which the vehicle is currently traveling is not the road on which the data beacon transmitting device is installed and it is determined that the beacon data cannot be received, the corresponding optical beacon is received. The power of the receiver 1 or the radio wave beacon receiver 2 is turned off. As a result, the current consumption of the entire device can be reduced.

[0016]

As described above, according to the present invention, with respect to both beacon data transmitting devices for transmitting optical beacons and radio wave beacons, a single data processing unit causes the vehicle to move to the current position based on the current position information. The beacon data can be received by recognizing the type of road on which the vehicle is traveling, and the level detection unit detects the reception level from the radio beacon receiver to detect an optical beacon receiver and a radio beacon receiver. One of the two can be selected to efficiently receive the beacon data, and the interfaces between both receivers and the data processing unit can be integrated into one system, and the overall size of the device can be reduced.

Further, according to the present invention, when it is determined that the road on which the vehicle is currently traveling is not the road on which the beacon data transmission device is installed and it is determined that data cannot be received, the receiver The power consumption can be reduced by turning off the power supply.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a beacon data receiving device according to the present invention.

[Explanation of symbols]

 1 Optical beacon receiver 2 Radio beacon receiver 3 Level detection unit 4 Data processing unit 5 Position detection device

Claims (2)

[Claims] 1. An optical beacon receiver for receiving optical beacon data, a radio beacon receiver for receiving radio beacon data, a level detection unit for detecting a reception level of the radio beacon receiver, and current vehicle position information. And a position detection device that detects the type of road on which the vehicle is currently traveling based on the current position information detected by the position detection device, and whether the data beacon transmission device is installed on the identified road. When it is determined that the data beacon device is installed, one of the optical beacon receiver and the radio beacon receiver that can efficiently receive based on the reception level detection signal output from the level detection unit is selected. A beacon data receiving device including a data processing unit that receives and processes the received beacon data. 2. The data processing unit determines that the type of road on which the vehicle is currently traveling is not the road on which the data beacon transmission device is installed, and when it is determined that beacon data cannot be received, the data is transmitted. The beacon data receiving apparatus according to claim 1, further comprising a processing function of turning off the power source of the optical beacon receiver or the radio beacon receiver corresponding to the above.